CN101621843B - Uplink synchronization method, network side equipment, user equipment (UE) and mobile communication system - Google Patents
Uplink synchronization method, network side equipment, user equipment (UE) and mobile communication system Download PDFInfo
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- CN101621843B CN101621843B CN2009101616861A CN200910161686A CN101621843B CN 101621843 B CN101621843 B CN 101621843B CN 2009101616861 A CN2009101616861 A CN 2009101616861A CN 200910161686 A CN200910161686 A CN 200910161686A CN 101621843 B CN101621843 B CN 101621843B
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Abstract
The invention provides an uplink synchronization method which comprises the following steps: a network side sets the UpPTS number needing configuring in a subframe, configures UpPTS in the subframe according to the set number and informs the position of the UpPTS to user equipment (UE); each UE selects one of the configured UpPTS positions to carry out the uplink synchronization process, calculates the transmitting time of an uplink synchronization code according to the position of the selected UpPTS and transmits the uplink synchronization code to the network side in the calculated transmitting time; the network side generates a synchronous adjusting command according to the detected uplink synchronization code and transmits the command to the UE; and the UE adjusts the self uplink transmitting time according to the synchronous adjusting command. The invention also provides network side equipment, the UE and a mobile communication system. The uplink synchronization method, the network side equipment, the UE and the mobile communication system reduce the uplink synchronization conflict caused by character code selection through configuring a plurality of UpPTSs to reuse the uplink synchronization code.
Description
Technical field
The present invention relates to mobile communication technology, particularly a kind of uplink synchronisation method, network equipment, subscriber equipment and mobile communication system.
Background technology
In time division duplex (TDD) mobile communication system, require the upward signal that each subscriber equipment (UE) in the same time slot sends in the sub-district to arrive network side, i.e. uplink synchronous at synchronization.The frame structure of TDD synchronous mobile communication system as shown in Figure 1 in the present standard; each subframe comprises three special time slots: protect time slot (GP), a descending pilot frequency time slot (DwPTS), a uplink pilot time slot (UpPTS), also comprise a plurality of business time-slots such as TS1, TS2 for one.Adopt DwPTS as downlink pilot frequency channel (DwPCH), user equipment (UE) is finished down-going synchronous according to the descending synchronous code among the DwPTS; Adopt UpPTS as ascending pilot channel (UpPCH), the optional uplink synchronous code of UpPTS has 8 code words in the existing standard, each UE selects 1 uplink synchronous code as self from these 8 code words, UE sends uplink synchronous code to finish uplink synchronous at UpPTS after finishing down-going synchronous.Δ t represents half of Timing Advance of relative UpPTS time started of UE among Fig. 1.
With the TD-SCDMA system is example, and the process of uplink synchronous is as follows in the present mobile communication standard:
Step 1: UE finishes down-going synchronous by the descending synchronous code that detects among the DwPTS, calculates the Timing Advance 2 Δ t of the relative UpPTS of UE time started simultaneously according to power meter.
Step 2: UE selects one from 8 uplink synchronous codes, and calculates the transmitting time of this uplink synchronous code, in the transmitting time that calculates uplink synchronous code is sent to network side.
The computing formula of uplink synchronous code transmitting time is:
T
TX-UpPCH＝T
RX-DwPCH-2Δt+12×16Tc
Aforementioned calculation result is expressed as the integral multiple of 1/8 chip, wherein:
T
TX-UpPCHBe the UpPCH emission time started of relative UE time,
T
RX-DwPCHThe DwPCH that is the relative UE time receives the time started,
2 Δ t are Timing Advance (UpPCH of relative UpPTS time started of UE
ADV), default value is 48Tc, Tc represents chip period.
In existing TD-SCDMA system, for fear of the DwPTS of some base stations owing to the reason of propagation delay causes interference to the UpPTS of neighbor base station, ascending pilot channel skew (UpPCHShifting) technology has been proposed, radio network controller (RNC) is according to the interferometry of base station to UpPTS, adjust the position that UE sends UpPTS, for example, UpPTS is adjusted to business time-slot TS1 or TS2.When adopting UpPCH Shifting technology, need revise, introduce parameter n the computing formula of above-mentioned uplink synchronous code transmitting time
UpPCHShift, n
UpPCHShiftBy the upper-layer protocol assignment, and its value is:
n
UpPCHShift＝0，1，...，127，
The computing formula of revised uplink synchronous code transmitting time is:
T
TX-UpPCH＝T
RX-DwPCH-2Δt+12×16?Tc+n
UpPCHShift×16Tc
Step 3: after network side detects uplink synchronous code, compare, produce according to comparative result and adjust instruction synchronously, in physical access channel (FPACH), will adjust instruction synchronously and send to UE according to the target location among its position and the UpPTS.
Step 4: UE adjusts self up transmitting time according to adjusting instruction synchronously, and the ascending time slot starting point of UE is alignd with the ascending time slot starting point of network side frame structure.
Also propose high speed uplink packet access (HSUPA) and high speed uplink packet in the present TD-SCDMA system and inserted enhancing (HSUPA+) technology.Network side is dispatched UE in HSUPA and HSUPA+ technology, in a sub-district, the part code word in 8 code words of UpPTS divided out is used for scheduling process and uses, and remaining code word is divided into be used for inserting at random use.When adopting HSUPA and HSUPA+ technology, the uplink synchronous process still adopts above-mentioned steps one to step 4, in step 2, the uplink synchronous code of UE is not to select arbitrarily from 8 code words of UpPTS, select but be divided into the code word that is used for inserting at random use from 8 code words, all the other adopt the uplink synchronous step of HSUPA and HSUPA+ technology all identical with above-mentioned steps.
No matter be traditional uplink synchronous process, still adopt the uplink synchronous process after the UpPCH Shifting technology, in a subframe, all has only a UpPTS, promptly have only a UpPCH, UE can only select a code word to carry out the uplink synchronous process on this channel from the uplink synchronous code of limited quantity.Because UE can only send uplink synchronous code at same UpPTS, and it is limited optionally to be used for the code word of uplink synchronous code, and optionally code word has 8 as mentioned above, and then the UE that carries out uplink synchronous at synchronization and Node B can only have 8 at most.Present TD-SCDMA system, introduced 1880 to 1900MHz the A resource of frequency range on the basis of B frequency range original 2010 to 2025MHz, the frequency number that the sub-district comprises increases, the also corresponding increase of supporting of UE quantity, then there is the UE of greater number to need access network and Node B to carry out uplink synchronous at synchronization, adopt above-mentioned uplink synchronisation method, the code word that UE produces when inserting is at random selected also corresponding the increasing of conflict, the delay or the call loss that cause UE to insert.After introducing HSUPA and HSUPA+ technology, also to mark off a part in the limited code word and be used for the scheduling use, uplink synchronous code resource is nervous more in the frame structure of the single UpPTS of feasible employing.And after introducing HSUPA and HSUPA+ technology, the cell update quantity that is in states such as URA_PCH, CELL-PCH, CELL-FACH increases, and feasible demand to number of up going synchronization code increases greatly.
In a word, in the present uplink synchronous process, the code word that optionally is used for uplink synchronous code is limited, and UE can only send uplink synchronous code at same UpPTS, so the uplink synchronous conflict that UE produces when inserting at random increases the delay or the call loss that cause UE to insert.
Summary of the invention
The embodiment of the invention provides a kind of uplink synchronisation method, adopts this method can reduce the uplink synchronous conflict.
The embodiment of the invention provides a kind of network equipment, adopts this network side can reduce the uplink synchronous conflict.
The embodiment of the invention provides a kind of subscriber equipment, adopts this subscriber equipment can reduce the uplink synchronous conflict.
The embodiment of the invention provides a kind of mobile communication system, adopts this mobile communication system can reduce the uplink synchronous conflict.
The technical scheme of the embodiment of the invention specifically is achieved in that
A kind of uplink synchronisation method may further comprise the steps:
Network side is set needs the uplink pilot time slot UpPTS number that disposes in the subframe, dispose UpPTS according to the number of setting in subframe;
Network side is with the position informing user equipment (UE) of configuration UpPTS in the subframe;
UE selects one according to the selection strategy of setting and carries out the uplink synchronous process from the UpPTS position of configuration;
UE sends selected uplink synchronous code at the UpPTS that selects, and the transmitting time according to the position calculation uplink synchronous code of selected UpPTS sends to network side in the transmitting time that calculates with uplink synchronous code;
Network side produces according to detected uplink synchronous code and adjusts instruction synchronously, sends to UE;
UE adjusts self up transmitting time according to adjusting instruction synchronously.
Described number according to setting disposes UpPTS and comprises in subframe:
A UpPTS is configured in special time slot;
All the other UpPTS are configured in ascending time slot in the business time-slot.
Need the uplink pilot time slot UpPTS number that disposes in the described setting subframe, in subframe, dispose UpPTS according to the number of setting and be:
By Operation and Maintenance 0﹠amp; Need the uplink pilot time slot UpPTS number that disposes in the M function setting subframe, pass through 0﹠amp; The M function disposes UpPTS according to the number of setting in subframe;
Or,
By RRM RRM Function detection UE number, set the uplink pilot time slot UpPTS number that needs dispose in the subframe according to testing result, in subframe, dispose UpPTS by the RRM function according to the number of setting.
Described network side with the position informing user equipment (UE) of configuration UpPTS in the subframe is:
Network side is by the position informing user equipment (UE) of system information broadcast with configuration UpPTS in the subframe;
Or,
Network side is by the position informing user equipment (UE) of dedicated control signaling with configuration UpPTS in the subframe.
The selection strategy of described setting is:
UE for there not being ability at business time-slot transmission uplink synchronous code directly carries out uplink synchronous in former UpPTS position;
UE for the uplink synchronous code of having the ability to send at business time-slot selects a UpPTS position to carry out uplink synchronous from the UpPTS position of configuration at random.
The method of the transmitting time of described calculating uplink synchronous code is:
TTX-UpPCH＝TRX-DwPCH-2Δt+12×16?Tc+nUpPCHTDM×16Tc；
Wherein, TTX-UpPCH is the ascending pilot channel UpPCH emission time started of relative UE time, TRX-DwPCH is that the downlink pilot frequency channel DwPCH of relative UE time receives the time started, 2 Δ t are UE Timing Advances of relative UpPTS time started, default value is 48Tc, Tc is a chip period, and nUpPCHTDM is the selected UpPCH of UE position.
The system of selection of described uplink synchronous code is:
UE selects the uplink synchronous code of a code word as self from all code words of UpPTS;
Or,
UE is divided into from all code words of UpPTS and is used for inserting at random the uplink synchronous code of code word of code word selection of use as self.
Described UE also comprises after adjusting the up transmitting time of instruction adjustment self synchronously:
UE sends dispatch request to network side.
A kind of network equipment comprises:
Detecting unit is used for the uplink synchronous code that UE uploads is detected, and testing result is offered command unit;
Administrative unit is used for setting subframe and needs the uplink pilot time slot UpPTS number that disposes, disposes UpPTS according to the number of setting in subframe, will comprise the number of UpPTS in the subframe and the configuration information of position and offer transmitting element;
Command unit is used for producing adjustment instruction synchronously according to the testing result of detecting unit, will adjust instruction synchronously and offer transmitting element;
Transmitting element is used for the number of subframe UpPTS that administrative unit is provided and the configuration information of position and sends to UE, and the synchronous adjustment instruction that command unit is provided sends to UE.
Described detecting unit is further used for user equipment (UE) number in the sub-district is detected, and testing result is offered administrative unit;
Described administrative unit is set the uplink pilot time slot UpPTS number of needs configuration in the described subframe to the testing result of UE number according to detecting unit.
A kind of user equipment (UE) comprises:
Receiving element is used for receiving the configuration information of the number of the subframe uplink pilot time slot UpPTS that network side issues and position and adjusts instruction synchronously, with configuration information with adjust instruction synchronously and offer control unit;
Control unit, be used for selecting one from the UpPTS position of configuration and carry out the uplink synchronous process according to configuration information, select a uplink synchronous code, according to the transmitting time of the position calculation uplink synchronous code of selected UpPTS, the control transmitting element sends to network side in the transmitting time that calculates with this uplink synchronous code;
Transmitting element is used in the transmitting time that calculates uplink synchronous code being sent to network side under the control of control unit.
A kind of mobile communication system comprises:
Network equipment, be used for setting subframe and need the uplink pilot time slot UpPTS number that disposes, in subframe, dispose UpPTS according to the number of setting, position informing user equipment (UE) with configuration UpPTS in the subframe, and, send to UE according to the uplink synchronous code generation adjustment instruction synchronously that detected UE sends;
User equipment (UE), be used for selecting one from the UpPTS position of configuration and carry out the uplink synchronous process according to the selection strategy of setting, select a uplink synchronous code, transmitting time according to the position calculation uplink synchronous code of selected UpPTS, in the transmitting time that calculates uplink synchronous code is sent to network equipment, and adjust self up transmitting time according to the synchronous adjustment instruction that network equipment sends.
As seen from the above technical solutions, the uplink synchronisation method that adopts the embodiment of the invention to propose, network side is at first set needs the UpPTS number that disposes in the subframe, in a subframe, dispose one or more UpPTS according to the number of setting, each UE selects one and sends uplink synchronous code from the UpPTS of configuration then, therefore make uplink synchronous code be reused, reduced because the uplink synchronous conflict that the code word selection causes.
Description of drawings
Fig. 1 is the frame assumption diagram of prior art TDD synchronous mobile communication system;
Fig. 2 is the frame assumption diagram of a preferred embodiment of the present invention TDD synchronous mobile communication system;
Fig. 3 is a preferred embodiment of the present invention uplink synchronisation method flow chart;
Fig. 4 is the composition structure chart of network equipment embodiment illustrated in fig. 3;
Fig. 5 is the composition structure chart of subscriber equipment embodiment illustrated in fig. 3.
Fig. 6 is the composition structure chart of mobile communication system embodiment illustrated in fig. 3.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
The uplink synchronisation method that the embodiment of the invention proposes, a plurality of UpPTS of configuration in a subframe, each UE selects one to send uplink synchronous code from a plurality of UpPTS, therefore makes uplink synchronous code reuse, and has reduced the character code selection conflict of UE in the uplink synchronous.
Fig. 2 is the frame assumption diagram of a preferred embodiment of the present invention TDD synchronous mobile communication system.As shown in Figure 2, in each subframe of base station configuration, GP and DwPTS are same as the prior art.Keep the invariant position of UpPTS in the prior art, in order to express easily, the UpPTS with position same as the prior art is labeled as UpPTS0 in embodiments of the present invention; And, in the frame structure that the embodiment of the invention proposes,, UpPTS can also be configured in the ascending time slot in the business time-slots such as TS1, TS2 simultaneously except on the prior art same position, disposing UpPTS0, constitute a plurality of UpPCH.For example, a subframe comprises following 6 business time-slot: TS1, TS2, TS3, TS4, TS5, TS6, with system up and descending time slot being configured to 2:4 is example, then TS1 and TS2 are ascending time slot, and TS3 to TS6 is a descending time slot, and the frame structure that the embodiment of the invention proposes is in configuration UpPTS0, TS1 or TS2 are configured to UpPTS, be example only in the embodiment shown in Figure 2, in order to express easily, it be labeled as UpPTS1 to be configured in TS1.As shown in Figure 2, the subframe in the present embodiment is configured to UpPTS1 with TS1 simultaneously at prior art same position configuration UpPTS0.Even, if the ascending time slot number is more, the ascending time slot more than 2 or 2 can be configured to UpPTS.Adopt frame structure shown in Figure 2, a plurality of UE can select UpPTS0 or UpPTS1 to send uplink synchronous code, as shown in Figure 2, UE1 adopts UpPTS0 to send uplink synchronous code, UE2 adopts UpPTS1 to send uplink synchronous code, because limited uplink synchronous code is reused, therefore reduced the uplink synchronous conflict on different time slots.
Correspondingly, the embodiment of the invention is improved the uplink synchronisation method of prior art.Fig. 3 is the flow chart of a preferred embodiment of the present invention uplink synchronisation method, in the present embodiment, is example with the TD-SCDMA system still, and as shown in Figure 3, this uplink synchronisation method may further comprise the steps.
Step 301: network side is set needs the UpPTS number that disposes in the subframe, dispose UpPTS according to the number of setting in subframe.
In this step, the UpPTS number that needs in the subframe to dispose can be one or more.There are two kinds of methods to set to need in the subframes UpPTS number that disposes.First method is to detect by the number of RRM (RRM) function to UE in the sub-district, sets the UpPTS number according to testing result.But in actual applications, often the number of UE is a lot of in the sub-district, and is longer by detecting the required time of UE number setting UpPTS number, cause the delay of uplink synchronous process easily, so network side can be according to estimating by Operation and Maintenance (O﹠amp; M) function is directly set the UpPTS number.
When the UpPTS of configuration in the subframe, a UpPTS is configured in special time slot UpPTS0, all the other UpPTS are configured in the position of ascending time slot.With frame structure shown in Figure 2 is example, and network side is set in the subframe needs to dispose 2 UpPTS, then disposes UpPTS0 in special time slot, and in ascending time slot TS1 is configured to UpPTS1.
Step 302: network side is with the position informing UE of configuration UpPTS in the subframe.
Network side can adopt the method for system information broadcast or the dedicated control signaling by UE will be in the subframe position informing UE of configuration UpPTS.
Step 303:UE selects one and carries out the uplink synchronous process from the UpPTS position of configuration.
UE selects the position of UpPTS according to predefined selection strategy in this step, can adopt several different methods to set selection strategy, is example with following method only herein, and selection strategy is set at:
UE for there not being ability at business time-slot transmission uplink synchronous code directly carries out uplink synchronous in former UpPTS position, is example with frame structure shown in Figure 2 still, directly carries out uplink synchronous in the UpPTS0 position;
UE for the uplink synchronous code of having the ability to send at business time-slot, from the UpPTS position of configuration, select a UpPTS position to carry out uplink synchronous at random, be example still, in UpPTS0 and UpPTS1, select a position to carry out uplink synchronous at random with frame structure shown in Figure 2.
Step 304:UE selects a uplink synchronous code, and the transmitting time according to this uplink synchronous code of position calculation of selected UpPTS sends to network side in the transmitting time that calculates with uplink synchronous code.
The computing formula of the transmitting time of uplink synchronous code is as follows in this step:
T
TX-UpPCH＝T
RX-DwPCH-2Δt+12×16Tc+n
UpPCHTDM×16Tc
Wherein, T
TX-UpPCHBe the UpPCH emission time started of relative UE time,
T
RX-DwPCHThe DwPCH that is the relative UE time receives the time started,
2 Δ t are Timing Advance (UpPCH of relative UpPTS time started of UE
ADV), default value is 48Tc, Tc represents chip period,
n
UpPCHTDMBe the selected UpPCH of UE position.
In this step, for the TD-SCDMA system that does not adopt HSUPA and HSUPA+ technology, UE selects the uplink synchronous code of a code word as self from 8 code words of UpPTS.When adopting HSUPA and HSUPA+ technology, in 8 code words of UpPTS, part code word is divided out and is used for scheduling process and uses, remaining code word is divided into the code word that is used for inserting at random use, and then the uplink synchronous code of UE is divided into the code word that is used for inserting at random use and selects from 8 code words in step 304.
Step 305: after network side detects uplink synchronous code, compare, produce according to comparative result and adjust instruction synchronously, send to UE according to the target location among its position and the UpPTS.
Step 306:UE adjusts self up transmitting time according to adjusting instruction synchronously, and the ascending time slot starting point of UE is alignd with the ascending time slot starting point of network side frame structure.
When employing HSUPA and HSUPA+ technology, UE sends dispatch request according to after the up transmitting time of the adjustment self of adjustment instruction synchronously to network side.
Adopt method shown in Figure 3 to carry out the uplink synchronous of UE and network side, wherein the composition structure of network equipment as shown in Figure 4, the composition structure of UE as shown in Figure 5, the composition structure of mobile communication system is as shown in Figure 6.
Referring to Fig. 4, network equipment comprises detecting unit 401, administrative unit 402, command unit 403 and transmitting element 404 at least.
UE number in 401 pairs of sub-districts of detecting unit detects, and testing result is offered administrative unit 402, and the uplink synchronous code that UE is uploaded detects, and testing result is offered command unit 403.
The number of UpPTS and the configuration information of position send to UE in the subframe that transmitting element 404 provides administrative unit 402, and the synchronous adjustment instruction that command unit 403 is provided sends to UE.
Perhaps, detecting unit 401 only detects the uplink synchronous code that UE uploads, and the UE number is not detected, and administrative unit 402 adopts the O﹠amp described in the above-mentioned steps 301; The M function needs the UpPTS number that disposes in the setting subframe.
Referring to Fig. 5, UE comprises receiving element 501, transmitting element 502 and control unit 503 at least.
Receiving element 501 receives the number of UpPTS in the subframe that network sides issue and the configuration information of position, and adjusts instruction synchronously, and with this configuration information with adjust instruction synchronously and offer control unit 503.
Transmitting element 502 sends to network side in the transmitting time that calculates with uplink synchronous code under the control of control unit 503.
Referring to Fig. 6, Fig. 6 is the composition structure of the mobile communication system of method embodiment shown in Figure 3, comprises network equipment 601 and UE602 in this mobile communication system at least.
UE602 selects one according to the selection strategy of setting and carries out the uplink synchronous process from the UpPTS position of configuration, select a uplink synchronous code, transmitting time according to the position calculation uplink synchronous code of selected UpPTS sends to network equipment 601 in the transmitting time that calculates with uplink synchronous code; And adjust self up transmitting time according to the synchronous adjustment instruction that network equipment 601 sends.
In mobile communication system shown in Figure 6, network equipment 601 can adopt the network equipment embodiment illustrated in fig. 4, and UE602 can adopt UE embodiment illustrated in fig. 5, and it is specifically formed structure and can not repeat them here respectively as above-mentioned Fig. 4 and shown in Figure 5.
As seen from the above-described embodiment, in the uplink synchronisation method that the embodiment of the invention proposes at first network side set and need the UpPTS number that disposes in the subframe, in a subframe, dispose one or more UpPTS according to the number of setting, each UE selects one and sends uplink synchronous code from the UpPTS of configuration then, therefore make uplink synchronous code be reused, reduced because the uplink synchronous conflict that the character code selection causes.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a uplink synchronisation method is characterized in that, may further comprise the steps:
Network side is set needs the uplink pilot time slot UpPTS number that disposes in the subframe, dispose UpPTS according to the number of setting in subframe;
Network side is with the position informing user equipment (UE) of configuration UpPTS in the subframe;
UE selects one according to the selection strategy of setting and carries out the uplink synchronous process from the UpPTS position of configuration;
UE sends selected uplink synchronous code at the UpPTS that selects, and the transmitting time according to the position calculation uplink synchronous code of selected UpPTS sends to network side in the transmitting time that calculates with uplink synchronous code;
Network side produces according to detected uplink synchronous code and adjusts instruction synchronously, sends to UE;
UE adjusts self up transmitting time according to adjusting instruction synchronously.
2. uplink synchronisation method as claimed in claim 1 is characterized in that, described number according to setting disposes UpPTS and comprises in subframe:
A UpPTS is configured in special time slot;
All the other UpPTS are configured in ascending time slot in the business time-slot.
3. uplink synchronisation method as claimed in claim 1 or 2 is characterized in that, needs the uplink pilot time slot UpPTS number that disposes in the described setting subframe, disposes UpPTS according to the number of setting in subframe and is:
By Operation and Maintenance O ﹠amp; Need the uplink pilot time slot UpPTS number that disposes in the M function setting subframe, by O ﹠amp; The M function disposes UpPTS according to the number of setting in subframe;
Or,
By RRM RRM Function detection UE number, set the uplink pilot time slot UpPTS number that needs dispose in the subframe according to testing result, in subframe, dispose UpPTS by the RRM function according to the number of setting.
4. uplink synchronisation method as claimed in claim 1 is characterized in that, described network side with the position informing user equipment (UE) of configuration UpPTS in the subframe is:
Network side is by the position informing user equipment (UE) of system information broadcast with configuration UpPTS in the subframe;
Or,
Network side is by the position informing user equipment (UE) of dedicated control signaling with configuration UpPTS in the subframe.
5. uplink synchronisation method as claimed in claim 1 is characterized in that, the selection strategy of described setting is:
For there not being ability to send the UE of uplink synchronous code, directly carry out uplink synchronous being configured in the locational UpPTS of former UpPTS position at business time-slot;
UE for the uplink synchronous code of having the ability to send at business time-slot selects a UpPTS position to carry out uplink synchronous from the UpPTS position of configuration at random.
6. uplink synchronisation method as claimed in claim 1 is characterized in that, the method for the transmitting time of described calculating uplink synchronous code is:
TTX-UpPCH＝TRX-DwPCH-2Δt+12×16Tc+nUpPCHTDM×16Tc；
Wherein, TTX-UpPCH is the ascending pilot channel UpPCH emission time started of relative UE time, TRX-DwPCH is that the downlink pilot frequency channel DwPCH of relative UE time receives the time started, 2 Δ t are UE Timing Advances of relative UpPTS time started, default value is 48Tc, Tc is a chip period, and nUpPCHTDM is the selected UpPCH of UE position.
7. uplink synchronisation method as claimed in claim 1 is characterized in that, the system of selection of described uplink synchronous code is:
UE selects the uplink synchronous code of a code word as self from all code words of UpPTS;
Or,
UE is divided into from all code words of UpPTS and is used for inserting at random the uplink synchronous code of code word of code word selection of use as self.
8. uplink synchronisation method as claimed in claim 1 is characterized in that, described UE also comprises after adjusting the up transmitting time of instruction adjustment self synchronously:
UE sends dispatch request to network side.
9. a network equipment is characterized in that, comprising:
Detecting unit is used for the uplink synchronous code that user equipment (UE) is uploaded is detected, and testing result is offered command unit;
Administrative unit is used for setting subframe and needs the uplink pilot time slot UpPTS number that disposes, disposes UpPTS according to the number of setting in subframe, will comprise the number of UpPTS in the subframe and the configuration information of position and offer transmitting element;
Command unit is used for producing adjustment instruction synchronously according to the testing result of detecting unit, will adjust instruction synchronously and offer transmitting element;
Transmitting element is used for the number of subframe UpPTS that administrative unit is provided and the configuration information of position and sends to UE, and the synchronous adjustment instruction that command unit is provided sends to UE.
10. network equipment as claimed in claim 9 is characterized in that,
Described detecting unit is further used for user equipment (UE) number in the sub-district is detected, and testing result is offered administrative unit;
Described administrative unit is set the uplink pilot time slot UpPTS number of needs configuration in the described subframe to the testing result of UE number according to detecting unit.
11. a user equipment (UE) is characterized in that, comprising:
Receiving element is used for receiving the configuration information of the number of the subframe uplink pilot time slot UpPTS that network side issues and position and adjusts instruction synchronously, with configuration information with adjust instruction synchronously and offer control unit;
Control unit, be used for selecting one from the UpPTS position of configuration and carry out the uplink synchronous process according to configuration information, select a uplink synchronous code, according to the transmitting time of the position calculation uplink synchronous code of selected UpPTS, the control transmitting element sends to network side in the transmitting time that calculates with this uplink synchronous code;
Transmitting element is used in the transmitting time that calculates uplink synchronous code being sent to network side under the control of control unit.
12. a mobile communication system is characterized in that, comprising:
Network equipment, be used for setting subframe and need the uplink pilot time slot UpPTS number that disposes, in subframe, dispose UpPTS according to the number of setting, position informing user equipment (UE) with configuration UpPTS in the subframe, and, send to UE according to the uplink synchronous code generation adjustment instruction synchronously that detected UE sends;
UE, be used for selecting one from the UpPTS position of configuration and carry out the uplink synchronous process according to the selection strategy of setting, select a uplink synchronous code, transmitting time according to the position calculation uplink synchronous code of selected UpPTS, in the transmitting time that calculates uplink synchronous code is sent to network equipment, and adjust self up transmitting time according to the synchronous adjustment instruction that network equipment sends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101616861A CN101621843B (en) | 2009-07-28 | 2009-07-28 | Uplink synchronization method, network side equipment, user equipment (UE) and mobile communication system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101616861A CN101621843B (en) | 2009-07-28 | 2009-07-28 | Uplink synchronization method, network side equipment, user equipment (UE) and mobile communication system |
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| Publication Number | Publication Date |
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| CN101621843A CN101621843A (en) | 2010-01-06 |
| CN101621843B true CN101621843B (en) | 2011-11-09 |
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| CN103795434B (en) * | 2010-10-21 | 2017-04-26 | 高通股份有限公司 | Facilitating uplink synchronization in TD-SCDMA multi-carrier systems |
| US9820244B2 (en) | 2011-02-11 | 2017-11-14 | Blackberry Limited | Time-advanced random access channel transmission |
| CN103249136B (en) * | 2012-02-14 | 2016-08-10 | 中国移动通信集团广东有限公司 | A kind of accidental access method, base station, subscriber equipment and system |
| WO2018112760A1 (en) * | 2016-12-20 | 2018-06-28 | 武汉拓宝科技股份有限公司 | Pilot structure, pilot sending method, and user channel estimation method |
| CN106685625B (en) * | 2016-12-20 | 2020-05-01 | 上海道生物联技术有限公司 | User channel estimation method |
| WO2018176479A1 (en) * | 2017-04-01 | 2018-10-04 | 华为技术有限公司 | Uplink synchronization method and apparatus |
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| WO2006110774A2 (en) * | 2005-04-12 | 2006-10-19 | Motorola Inc. | Method and system for performing uplink synchronization |
| CN1855765A (en) * | 2005-04-19 | 2006-11-01 | 大唐移动通信设备有限公司 | Primary upload synchronizing method in TDMA system |
| CN101174880A (en) * | 2006-11-01 | 2008-05-07 | 中兴通讯股份有限公司 | Ascending pilot frequency emitting set |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2006110774A2 (en) * | 2005-04-12 | 2006-10-19 | Motorola Inc. | Method and system for performing uplink synchronization |
| CN1855765A (en) * | 2005-04-19 | 2006-11-01 | 大唐移动通信设备有限公司 | Primary upload synchronizing method in TDMA system |
| CN101174880A (en) * | 2006-11-01 | 2008-05-07 | 中兴通讯股份有限公司 | Ascending pilot frequency emitting set |
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