CN102780998A

CN102780998A - Method and device for maintaining cell synchronization

Info

Publication number: CN102780998A
Application number: CN2011101223605A
Authority: CN
Inventors: 常俊仁; 曾清海; 李亚娟
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2011-05-12
Filing date: 2011-05-12
Publication date: 2012-11-14
Anticipated expiration: 2031-05-12
Also published as: CN102780998B

Abstract

An embodiment of the invention relates to a method and a device for maintaining cell synchronization. The method for maintaining the cell synchronization comprises the steps of determining a deactivated secondary cell first secondary cell (Scell) of which the synchronization is required to be maintained; obtaining sounding reference signal (SRS) resources required when the first Scell sends an SRS; sending the SRS on the first Scell according to SRS resources; and receiving a response message corresponding to the SRS, wherein the response message brings a timing advance (TA) value which is used for synchronization adjustment of the first Scell. According to the method and the device, under the multiple-TA condition, synchronization maintenance of the deactivated Scell can be conducted as required, and the synchronization can be achieved as the same time when the deactivated Scell is activated quickly.

Description

The maintaining method of cell synchronizing and equipment

Technical field

The present invention relates to the communications field, more particularly, relate to the maintaining method and the equipment of cell synchronizing.

Background technology

In order to satisfy senior international mobile communication (International Mobile Telecommunications-Advanced; Abbreviation " IMT-A ") demand; Support is up to the peak data rate of 1Gbits/s; The further enhanced system of 3G (Third Generation) Moblie gpp long evolving system (Third Generation Partnership Project Long Term Evolution Advanced, be called for short " 3GPP LTE-ADVANCED ") system has agreed carrier wave converged (CA) technology method as its expanding system bandwidth at present.The main thought that carrier wave converges is exactly that a plurality of composition carrier waves (Component Carrier is called for short " CC ") are pooled a carrier wave that is higher than 20M, to support the defeated rate of high-speed data.

When UE uses a plurality of composition carrier wave, under several kinds of situation, can not use identical Timing Advance (Timing Advance is called for short " TA ") value on a plurality of composition carrier waves that UE uses.For example, the base station has disposed different composition carrier waves on different repeater (Repeater), and perhaps the composition carrier wave of different frequency has passed through different scattering paths.Under this situation, the different TA that form carrier wave are different.For example, UE uses two different composition carrier waves to communicate by letter with the access point of two non-cooperations, and two websites have been arranged two far-end aerial heads or distributed wireless head respectively, and UE uses two different composition carrier waves and this two websites to communicate.

In present LTE system; At subscriber equipment (User Equipment; Abbreviation " UE ") in the process of transfer of data; Can accurately adjust up Timing Advance through send visiting logical reference signal (Sounding Reference Signal is called for short " SRS "), to keep higher uplink synchronous precision and higher throughput.SRS comprises two kinds at present, i.e. periodicity SRS and aperiodicity SRS.The characteristics of aperiodic SRS are can be by a plurality of UE shared resources, and periodic SRS then is that UE is specific.

In the current long evolving system R10 version of (Long Term Evolution is called for short " LTE "), because only consider the situation of single TA; And whenever; Main plot (Primary Cell is called for short " PCell ") is always activated, and other are (Secondary Cell from the sub-district; Abbreviation " SCell ") synchronous regime and PCell are consistent, and therefore do not safeguard the synchronous regime of SCell.Under many TA situation, the synchronous regime that some SCell can't be always be consistent with PCell can cause like this when quick active deexcitation SCell because SCell possibly lose synchronously, and can't normally use SCell.

Summary of the invention

Embodiment of the invention technical problem to be solved is to exist under the situation of a plurality of TA, safeguards the synchronous regime of deexcitation SCell, so that can keep synchronous during quick active deexcitation SCell.

The embodiment of the invention has proposed a kind of cell synchronizing method of safeguarding, comprising: deexcitation first that need to confirm maintain synchronization is SCell from the sub-district; Obtain at a SCell and send the logical required SRS resource of reference signal SRS of spy; According to the SRS resource, on a SCell, send SRS; Receive and SRS corresponding response message, wherein response message carries the timing advance TA value of the synchronous adjustment that is used for a SCell.

The embodiment of the invention proposes a kind of cell synchronizing method of safeguarding, comprising: need to confirm maintain synchronization deexcitation first from the sub-district SCell; Before the time alignment timer TAT timer expiry relevant or when overtime with a SCell; The first descending timing difference and first specified threshold between a more said SCell and the main plot PCell; A perhaps said SCell is in the difference second descending timing difference and second specified threshold constantly; At said first timing difference smaller or equal to said first specified threshold or said second timing difference during smaller or equal to said second specified threshold, the said TAT timer of resetting.

The embodiment of the invention has proposed a kind of cell synchronizing method of safeguarding, comprising: need to confirm maintain synchronization deexcitation first from the sub-district SCell; Be sent in a SCell and send the logical required SRS resource of reference signal SRS of spy; Be received in a SCell and go up the SRS that sends; Send and SRS corresponding response message, wherein response message carries the timing advance TA value of the synchronous adjustment that is used for a SCell.

The embodiment of the invention has proposed a kind of subscriber equipment of safeguarding cell synchronizing, and subscriber equipment comprises: determination module, be used to confirm to need maintain synchronization deexcitation first from the sub-district SCell; The resource distribution module is used to obtain at a SCell and sends the logical required SRS resource of reference signal SRS of spy; The SRS module is used for the resource according to SRS, on a SCell, sends SRS; Receiver module is used for receiving and SRS corresponding response message, and wherein response message carries the timing advance TA value of the synchronous adjustment that is used for a SCell.

The embodiment of the invention has proposed a kind of base station equipment of safeguarding cell synchronizing, and base station equipment comprises:

The SCell configuration module, be used to confirm to need maintain synchronization deexcitation first from the sub-district SCell be used to be sent in a SCell and send and visit the logical required SRS resource of reference signal SRS; Receiver module is used to be received in a SCell and goes up the SRS that sends; Sending module is used for sending and SRS corresponding response message, and wherein response message carries the timing advance TA value of the synchronous adjustment that is used for a SCell.

According to the embodiment of the invention, can be implemented under the situation of many TA, the SCell to deexcitation carries out synchronous maintenance as required, when having guaranteed quick active by the SCell of deexcitation, can realize synchronously.

Description of drawings

In order to be illustrated more clearly in the technical scheme of the embodiment of the invention; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.In the accompanying drawings:

Fig. 1 is the flow chart of the method for the embodiment of the invention;

Fig. 2 is the flow chart of first embodiment of the invention;

Fig. 3 is the flow chart of second embodiment of the invention;

Fig. 4 is the flow chart of third embodiment of the invention;

Fig. 5 is the flow chart of fourth embodiment of the invention;

Fig. 6 is the flow chart of fifth embodiment of the invention;

Fig. 7 is the flow chart of sixth embodiment of the invention;

Fig. 8 is the structured flowchart of the subscriber equipment of the embodiment of the invention;

Fig. 9 is the structured flowchart of the base station equipment of the embodiment of the invention.

Embodiment

To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.

In order to safeguard the synchronous of deexcitation SCell, the embodiment of the invention has proposed a kind of cell synchronizing method of safeguarding, and is as shown in Figure 1, and this method comprises following process:

110: deexcitation that need to confirm maintain synchronization is the one SCell from the sub-district;

120: obtain at a said SCell and send the logical required SRS resource of reference signal SRS of spy;

130:, on a said SCell, send SRS according to said SRS resource;

140: receive and said SRS corresponding response message, wherein said response message carries the timing advance TA value of the synchronous adjustment that is used for a said SCell.

Further, after receiving the timing advance TA value that needs adjustment, the TAT timer relevant of resetting with a SCell, this TAT timer is used for the timing of a SCell.Safeguarding the TAT timer relevant with a SCell, can be the TAT timer of directly safeguarding the uplink synchronous of a SCell, also can be the TAT timer of the uplink synchronous of the Cell Group under maintenance the one SCell.

Below in conjunction with the several concrete application example of the embodiment of the invention that only provides as an example, describe the design of the embodiment of the invention in detail.

Fig. 2 shows the flow chart of first embodiment of the invention.In first embodiment of the invention, pre-configured UE needs the deexcitation SCell of maintain synchronization by evolved base station (evolved NodeB is called for short " eNB "), utilizes the SRS signaling to obtain then and regulates the synchronous TA value of said deexcitation SCell.

Specifically,

210, the pre-configured UE of eNB needs the deexcitation SCell of maintaining uplink and/or down-going synchronous.This process 210 is corresponding with process 100 shown in Figure 1.ENB can be in RRC reconfiguration message or SCell activation message needs the information of the deexcitation SCell of maintain synchronization for the UE appointment, perhaps indicate the SCell of deexcitation whether to need maintain synchronization.Below succinct for describing, " the deexcitation SCell that needs maintain synchronization " is called " SCell ".UE receives the SCell specify message of appointment the one SCell of eNB transmission, and wherein said SCell specify message is carried the SCell index information that is designated as a said Scell.

Specifically, eNB can be respectively deexcitation SCell who needs maintain synchronization of UE configuration in each cell set (Cell Group).Said Cell Group is meant the set of the Cell formation that can share same up timing advance TA value.ENB notifies UE through the information of the deexcitation SCell that needs maintain synchronization that dedicated signaling will be confirmed.Alternatively, eNB can be in this SCell specify message be configured in for UE and sends SRS or the resource of SRS periodically aperiodic on the SCell.

As replacement scheme; ENB can perhaps when last SCell among the Cell of the deexcitation UE Group, confirm that UE needs the deexcitation SCell of maintaining uplink and/or down-going synchronous when Cell Group of deexcitation UE; Promptly a SCell notifies UE then.

220, UE receives SRS is sent in indication on a SCell SRS transmission Indication message.Specifically; ENB aims at timer (Time Alignment Timer in a SCell time corresponding; Be called for short " TAT timer ") termination forward direction UE transmission PDCCH or media access control MAC CE (Medium Access Control Control Element; Be called for short " MAC CE ") signaling, on a SCell, send the SRS of (periodicity or aperiodicity) with indication UE.

This SRS sends SCell index information (index) or the Cell Group index of Cell Group that Indication message can comprise the SCell of needs transmission SRS.Alternatively, this SRS sends Indication message also can not comprise above-mentioned index information, and this moment, all deexcitation SCell sent SRS.

230, UE responds said SRS and sends Indication message, according to said SRS resource, on a SCell, sends SRS then.

Then, at S240, UE receives and this SRS corresponding response message, and this response message carries the timing advance TA value of the synchronous adjustment that is used for a SCell.Further, after receiving the timing advance TA value that needs adjustment, the TAT timer relevant of resetting with a SCell.The said TAT timer relevant with a SCell can be the TAT timer of directly safeguarding the uplink synchronous of a SCell, also can be the TAT timer of the uplink synchronous of the Cell Group under maintenance the one SCell.

Alternatively, in order to save the power consumption of UE, UE can receive the TA value that is used for a SCell from PCell or other SCell that keeps activation that current maintenance activates.

In addition, if 230, after UE sends SRS, in the preset time (for example in the time greater than the TAT timer) or before TAT is overtime, do not receive the TA value that needs adjustment, then UE is to eNB transmission synchronous maintenance failure status message.

Perhaps; If 230, behind the inferior SRS of UE emission N (N＞=1), for example launch after 2 SRS; Still do not receive the TA value that needs adjustment; Perhaps after emission N time, in the preset time, perhaps before TAT is overtime, still do not receive the TA value that needs adjustment, then UE sends the synchronous maintenance failure status message to eNB.

According to first embodiment of the invention, after a SCell was removed, eNB need to resend SCell specify message (, being called " the 2nd SCell specify message " in order distinguishing) and to indicate UE to confirm a new SCell; Perhaps eNB sends the 2nd SCell specify message and indicates the new SCell of UE when removing a current SCell.

After shown in Figure 2 240; If the said deexcitation SCell that needs maintain synchronization; Promptly a SCell is activated, and at least one the deexcitation SCell among the Cell Group under the perhaps said deexcitation SCell that needs maintain synchronization is activated, and then eNB is that the SRS resource of the pre-configured transmission SRS of a SCell can be discharged by UE automatically in 210; Perhaps eNB transmits control message to UE, and indication UE discharges pre-configured SRS resource under above-mentioned situation.Specifically; For example, UE discharges pre-configured SRS resource according to the indication information of eNB if desired, and then eNB can increase control information in the SCell specify message that UE sends in 210; UE discharges pre-configured SRS resource under above-mentioned situation with indication; Perhaps under activating a SCell or a SCell, in other deexcitations SCell among the Cell Group, send Indication message to UE and indicate whether to discharge, perhaps can indicate whether to discharge through other special-purpose signalings.

Fig. 3 is the flow chart of second embodiment of the invention.In second embodiment of the invention; ENB is in the process of normally carrying out the TAT maintenance; In needs; For example when CellGroup of deexcitation UE, perhaps when SCell that the last maintenance among the Cell of the deexcitation UE Group activates, confirm that UE needs the deexcitation SCell of maintaining uplink and/or down-going synchronous.Specifically, as shown in Figure 3,

310, eNB carries out normal TAT to be safeguarded;

320, when the one or more deexcitation SCell that confirm UE needed maintaining uplink and/or down-going synchronous, the SCell that said circumstances for example, eNB need to confirm one or more deexcitations of maintaining uplink and/or down-going synchronous promptly confirmed a SCell.According to the embodiment of the invention; ENB can send the SCell specify message to UE at current PC ell or on the SCell that keeps activating; Said SCell specify message indication UE sends SRS on the SCell that eNB confirms, dispose needed aperiodicity SRS resource or periodicity SRS resource for UE simultaneously.According to the embodiment of the invention, the SCell specify message can be carried the index information of the SCell that is designated as a SCell, carries said SRS is sent in SRS resource information and indication on a SCell SRS transmission indication information.UE will make response after receiving this SCell specify message.

In second embodiment of the invention, 330, UE responds said SCell specify message, sends indication information according to said SRS resource information and said SRS, on a SCell, sends SRS.

ENB will send corresponding response message with it to UE after receiving this SRS.In second embodiment of the invention, 340, UE receives and this SRS corresponding response message, and this response message carries the timing advance TA value of the synchronous adjustment that is used for a SCell.Further, after receiving the timing advance TA value that needs adjustment, the TAT timer relevant of resetting with a SCell.The said TAT timer relevant with a SCell can be the TAT timer of directly safeguarding the uplink synchronous of a SCell, also can be the TAT timer of the uplink synchronous of the Cell Group under maintenance the one SCell.

Preferably, in order to save the power consumption of UE, UE can keep the SCell that activates to receive the TA value that is used for a SCell from current PC ell or other.

As improvement to second embodiment of the invention; Can be in needs; During Cell Group of for example above-mentioned deexcitation UE, perhaps when SCell that the last maintenance among the Cell of the deexcitation UE Group activates, the resource of configuration transmission SRS; And acquiescence just discharges after having sent SRS, promptly can disposablely use.Specifically, in 320, the SCell specify message of appointment the one SCell that eNB sends can be carried and sent the resource release indication information that said SRS discharges said SRS resource afterwards.In this case, UE 340 receive with said SRS corresponding response message after, discharge indication information according to resource, discharge said SRS resource.

In addition, if 330, after UE sends SRS, in the preset time (for example in the time greater than the TAT timer) or before TAT is overtime, do not receive the TA value that needs adjustment, then UE is to eNB transmission synchronous maintenance failure status message.

Perhaps; If 330, behind the inferior SRS of UE emission N (N＞=1), for example launch after 2 SRS; Still do not receive the TA value that needs adjustment; Perhaps after emission N time, in the preset time, perhaps before TAT is overtime, still do not receive the TA value that needs adjustment, then UE sends the synchronous maintenance failure status message to eNB.

Fig. 4 is the flow chart of third embodiment of the invention.In third embodiment of the invention, by UE as the case may be, when for example receiving the message of the deexcitation SCell that eNB sends, need to confirm the deexcitation SCell of maintain synchronization, promptly confirm a SCell.Followingly specifically describe with reference to Fig. 4.

410, UE receives the deexcitation message with the 2nd SCell deexcitation.The 2nd SCell described here only is used for distinguishing with an aforementioned SCell, and purpose is to be convenient to describe, and SCell is not had special restriction.UE is after receiving this deexcitation message; Judge whether the 2nd SCell is last SCell that keeps activation in its affiliated subdistrict group; At said the 2nd SCell is when last keeps the SCell of activation in its affiliated subdistrict group; Selecting the 2nd SCell is the aforementioned SCell that needs maintain synchronization; An i.e. SCell, perhaps selecting a deexcitation SCell in said the 2nd SCell affiliated subdistrict group at random is a said SCell, the deexcitation SCell that perhaps selects cell index maximum/minimum is a said SCell.Perhaps; UE receives the deexcitation message with cell set Cell Group deexcitation; And to select a deexcitation SCell among the said Cell Group at random be a said SCell, and the deexcitation SCell that perhaps selects cell index maximum/minimum among the said Cell group is a said SCell.

Because a SCell is confirmed that by UE self therefore, in order to send SRS, UE need send the required SRS resource of SRS to eNB request configuration.

In third embodiment of the invention; 420; The UE SCell that PCell (keep activate) or other keep activating in the main plot goes up and sends SRS and send a request message; Wherein said SRS sends a request message and carries the SCell index information that is chosen as a said SCell, on a said SCell, sends SRS with request.

As preferred version; Before each TAT is overtime; UE can at first calculate the first descending timing difference (the perhaps path-loss difference between a SCell and the PCell) between a SCell and the PCell greater than after the specified threshold; Perhaps at a SCell after difference descending timing difference (or path loss) constantly surpasses another certain threshold, just trigger UE and on a SCell, send periodically or aperiodic SRS signal, UE ability sends a request message to eNB transmission SRS then; Otherwise UE replacement TAT timer sends a request message and do not send SRS to eNB.

For example, before the TAT timer expiry, UE calculates respectively when moment T (1) and T (2), the descending timing difference between a SCell and the PCell: T_DL-difference (i)=T_DL-SCell (i)-T_DL-PCell (i), i=1,2;

When (T_DL-difference (1)-T_DL-difference (2))/(T (2)-T (1))＞T_threshold, trigger UE and on a SCell, send periodically or aperiodic SRS signal.

The difference of the descending timing when wherein, T_DL-difference (i) is illustrated in moment T (i) between a SCell and the PCell.The descending timing value of SCell when T_DL-SCell (i) is illustrated in moment T (i), the descending timing value of PCell when T_DL-PCell (i) is illustrated in moment T (i), T_threshold representes to trigger thresholding.

Utilize path loss values to carry out Calculation Method and descending timing is similar,

For example, before the TAT timer expiry, UE calculates respectively when moment T (1) and T (2), the descending timing difference between a SCell and the PCell: PL_difference (i)=PL_SCell (i)-PL_PCell (i), i=1,2;

When (PL_difference (1)-PL_difference (2))/(T (2)-T (1))＞PL_threshold, trigger UE and on a SCell, send periodically or aperiodic SRS signal.

The difference of the downlink path loss difference when wherein, PL_difference (i) is illustrated in moment T (i) between a SCell and the PCell.The downlink path loss of SCell when PL_SCell (i) is illustrated in moment T (i), the downlink path loss of PCell when PL_PCell (i) is illustrated in moment T (i), T_threshold representes to trigger thresholding.

It is following to utilize the descending timing of SCell self and the descending timing in a certain moment before to carry out Calculation Method:

For example, before the TAT timer expiry, UE calculates respectively when moment T (1) and T (2), the descending timing difference of a SCell: T_DL-difference=T_DL-SCell (2)-T_DL-SCell (1),

When T_DL-difference＞T_threshold, trigger UE and on a SCell, send periodicity or aperiodic SRS signal.

Wherein, T_DL-difference representes the descending timing difference of a SCell between moment T (1) and T (2).The descending timing value of SCell when T_DL-SCell (i) is illustrated in moment T (i), T_threshold representes to trigger thresholding.

It is following to utilize the downlink path loss of SCell self and the downlink path loss in a certain moment before to carry out Calculation Method:

For example, before the TAT timer expiry, UE calculates respectively when moment T (1) and T (2), the downlink path loss of a SCell: PL-difference=PL_SCell (2)-PL_SCell (1),

When PL_difference＞T_threshold, trigger UE and on a SCell, send periodicity or aperiodic SRS signal.

Wherein, PL_difference representes the poor of the downlink path loss of a SCell between moment T (1) and T (2).The downlink path loss value of SCell when PL-SCell (i) is illustrated in moment T (i), T_threshold representes to trigger thresholding.

In third embodiment of the invention, 430, UE receives the SRS that sends a request message corresponding with said SRS and sends response message, and wherein said SRS sends SCell index information and the said SRS resource information that response message carries a said SCell.As possibility, eNB also can be in another dedicated signaling, for UE sends the SRS resource allocation.

Then, 440, UE sends said SRS on a said SCell.Then, 450, UE receives and this SRS corresponding response message, and this response message carries the timing advance TA value of the synchronous adjustment that is used for a SCell.Further, after receiving the timing advance TA value that needs adjustment, the TAT timer relevant of resetting with a SCell.The said TAT timer relevant with a SCell can be the TAT timer of directly safeguarding the uplink synchronous of a SCell, also can be the TAT timer of the uplink synchronous of the Cell Group under maintenance the one SCell.

In addition, if 440, after UE sends SRS, in the preset time (for example in the time greater than the TAT timer) or before TAT is overtime, do not receive the TA value that needs adjustment, then UE is to eNB transmission synchronous maintenance failure status message.

Perhaps; If 440, behind the inferior SRS of UE emission N (N＞=1), for example launch after 2 SRS; Still do not receive the TA value that needs adjustment; Perhaps after emission N time, in the preset time, perhaps before TAT is overtime, still do not receive the TA value that needs adjustment, then UE sends the synchronous maintenance failure status message to eNB.

According to first embodiment of the invention, after a SCell is removed, UE will reselect the SCell that needs maintain synchronization through the mode described in 410, promptly confirm a SCell.

Fig. 5 is the flow chart of fourth embodiment of the invention.In fourth embodiment of the invention; The Cell Group synchronous maintenance Indication message that UE sends according to the eNB that receives; Confirm that to eNB this CellGroup needs maintain synchronization; But the also uncertain concrete SCell that needs maintain synchronization, a promptly uncertain SCell, but confirm a SCell by eNB.

In conjunction with Fig. 5 specifically, 510, UE receives cell set Cell Group synchronous maintenance Indication message, and whether said CellGroup needed maintain synchronization when this message was used in reference to all SCell of being shown among this Cell Group all by deexcitation; Perhaps whether whether this Indication message be used for indicating the TAT timer relevant with this Cell Group to need to safeguard during all by deexcitation at the SCell of said Cell group.

When said Cell Group needed maintain synchronization, 520, UE sent SRS and sends a request message on the SCell of current PC ell or other activation, and this message is carried the index that needs the cell set Cell of maintain synchronization Group.UE can with the relevant TAT timer expiry of this Cell Group before, send this SRS to eNB and send a request message.

Then, 530, UE receives the SRS that sends a request message corresponding with said SRS and sends response message, and wherein said SRS sends the index information that response message carries the SCell that needs maintain synchronization, the SCell index information of a promptly said SCell.Alternatively, said SRS sends response message and can carry the required resource of transmission SRS simultaneously.As replacement scheme, eNB can be that UE sends the SRS resource allocation through another dedicated signaling also.

Next, be similar to the embodiment of the invention three, 540, UE sends said SRS on a said SCell.Then, 550, UE receives and this SRS corresponding response message, and this response message carries the timing advance TA value of the synchronous adjustment that is used for a SCell.Further, after receiving the timing advance TA value that needs adjustment, the TAT timer relevant of resetting with a SCell.The said TAT timer relevant with a SCell can be the TAT timer of directly safeguarding the uplink synchronous of a SCell, also can be the TAT timer of the uplink synchronous of the Cell Group under maintenance the one SCell.

In addition, if 540, after UE sends SRS, in the preset time (for example in the time greater than the TAT timer) or before TAT is overtime, do not receive the TA value that needs adjustment, then UE is to eNB transmission synchronous maintenance failure status message.

Perhaps; If 540, behind the inferior SRS of UE emission N (N＞=1), for example launch after 2 SRS; Still do not receive the TA value that needs adjustment; Perhaps after emission N time, in the preset time, perhaps before TAT is overtime, still do not receive the TA value that needs adjustment, then UE sends the synchronous maintenance failure status message to eNB.

Fig. 6 is the flow chart of fifth embodiment of the invention.In fifth embodiment of the invention; Need to confirm the deexcitation SCell of maintain synchronization by UE, i.e. a SCell, and for reduction procedure; ENB is when deexcitation SCell; Just for UE configures the resource that is used for sending at this SCell SRS, so, UE need not send the required resource of SRS to eNB request configuration separately.

Specifically describe below in conjunction with Fig. 6,610, UE receives the deexcitation message with the 2nd SCell deexcitation.UE is after receiving this deexcitation message; Judge whether the 2nd SCell is last SCell that keeps activation in its affiliated subdistrict group; At said the 2nd SCell is when last keeps the SCell of activation in its affiliated subdistrict group; Selecting the 2nd SCell is the aforementioned SCell that needs maintain synchronization; An i.e. SCell, perhaps selecting a deexcitation SCell in said the 2nd SCell affiliated subdistrict group at random is a said SCell, the deexcitation SCell that perhaps selects cell index maximum/minimum is a said SCell.Perhaps; UE receives the deexcitation message with cell set Cell Group deexcitation; And to select a deexcitation SCell among the said Cell Group at random be a said SCell, and the deexcitation SCell that perhaps selects cell index maximum/minimum among the said Cell group is a said SCell.As a kind of possibility, said deexcitation message is carried at said the 2nd SCell and goes up the required resource information of transmission SRS.And as alternative dispensing means, eNB can be that UE is configured in the upward required resource information of transmission SRS of said the 2nd SCell through the signaling of special use.

According to fifth embodiment of the invention, 620, UE sends SRS on a SCell.As a kind of possibility; Before each TAT is overtime; UE can at first calculate the first descending timing difference (perhaps path-loss difference) between a SCell and the PCell greater than after the specified threshold, and perhaps a SCell just triggers UE and on a SCell, sends periodicity or aperiodic SRS signal after the difference second descending timing difference (or path loss) constantly surpasses another certain threshold; Otherwise UE replacement TAT timer, and do not send SRS to eNB.

Then, 630, UE receives and this SRS corresponding response message, and this response message carries the timing advance TA value of the synchronous adjustment that is used for a SCell.Further, after receiving the timing advance TA value that needs adjustment, the TAT timer relevant of resetting with a SCell.The said TAT timer relevant with a SCell can be the TAT timer of directly safeguarding the uplink synchronous of a SCell, also can be the TAT timer of the uplink synchronous of the Cell Group under maintenance the one SCell.

In addition, if 620, after UE sends SRS, in the preset time (for example in the time greater than the TAT timer) or before TAT is overtime, do not receive the TA value that needs adjustment, then UE is to eNB transmission synchronous maintenance failure status message.

Perhaps; If 620, behind the inferior SRS of UE emission N (N＞=1), for example launch after 2 SRS; Still do not receive the TA value that needs adjustment; Perhaps after emission N time, in the preset time, perhaps before TAT is overtime, still do not receive the TA value that needs adjustment, then UE sends the synchronous maintenance failure status message to eNB.

Fig. 7 is the flow chart of sixth embodiment of the invention.In sixth embodiment of the invention; Be with the difference of aforementioned first to the 5th embodiment; UE confirms that according to certain condition the TAT timer needs of the cell set Cell Group under this SCell are safeguarded when receiving that eNB sends to SCell deexcitation message, when the TAT timer expiry that needs are safeguarded; Then UE removes the SCell of this deexcitation, perhaps asks eNB to allow to remove the SCell of this deexcitation.ENB receives after the request of UE, can indicate UE to remove the SCell of this deexcitation, also can indicate UE on the SCell of this deexcitation, to carry out the uplink synchronous process, for example adopts the method for second embodiment of the invention to carry out synchronous maintenance.

Below in conjunction with Fig. 7 specifically, 710, UE receives the 2nd SCell deexcitation message that eNB sends, and 720, UE determines whether to need to safeguard the TAT timer of the 2nd SCell correspondence.Specifically; If UE confirms to exist the SCell that belongs to the maintenance activation of same Cell Group with the 2nd SCell; Then UE does not safeguard the timer that the 2nd SCell is corresponding, otherwise UE need safeguard TAT timer or the corresponding TAT timer of the Cell Group under the 2nd SCell that the 2nd SCell is corresponding.The TAT timer that so-called the 2nd SCell is corresponding represent relevantly with the 2nd SCell, determines whether the timer of the 2nd SCell maintenance uplink synchronous, and here, each SCell can have the TAT timer of a correspondence respectively.The corresponding TAT timer of Cell Group under so-called the 2nd SCell; The affiliated Cell Group of expression and the 2nd SCell is relevant; Confirm whether SCell among this Cell group keeps the timer of uplink synchronous; Here, TAT timer of the common maintenance of all SCell among the Cell Group.

As a kind of possibility; Can determine whether TAT timer that needs safeguard that the 2nd SCell is corresponding according to the indication of eNB or determine whether that according to the indication of eNB needs safeguard the corresponding TAT timer of Cell Group under the 2nd SCell; Therefore need to indicate whether UE to safeguard the TAT timer or the corresponding TAT timer of the Cell Group under the 2nd SCell of the 2nd SCell correspondence in the SCell deexcitation message that eNB can send in 710, perhaps indicate separately through other other special-purpose signalings.

As a kind of possibility; When UE is can be before the corresponding TAT timer of the corresponding TAT of the 2nd SCell or the Cell Group under the 2nd SCell is each overtime perhaps overtime; When confirming that the first descending timing difference between the 2nd SCell and the PCell is less than a specified threshold; Perhaps UE confirms the 2nd SCell when the difference second descending timing difference (or path loss) constantly is no more than another certain threshold, UE replacement TAT timer, and do not safeguard.

According to sixth embodiment of the invention; 730; When needs are safeguarded TAT timer or the corresponding TAT timer of the Cell Group under the 2nd SCell that said the 2nd SCell is corresponding; And during said TAT timer expiry, UE sends the indication information of the corresponding TAT timer expiry of said the 2nd SCell to eNB.As a kind of possibility, UE can remove said the 2nd SCell automatically.

Then; 740; The SCell that UE reception eNB sends removes Indication message, and indication UE removes said the 2nd SCell, and perhaps UE receives the SCell synchronous maintenance Indication message that eNB sends; Indication UE carries out synchronous maintenance on the 2nd SCell, for example adopt the method for second embodiment of the invention to carry out synchronous maintenance.

According to the embodiment of the invention, can be implemented under the situation of many TA, the synchronous maintenance of as required SCell of deexcitation being carried out when having guaranteed quick active by the SCell of deexcitation, can realize synchronously.

As shown in Figure 8, the embodiment of the invention has also proposed a kind of subscriber equipment 800 of safeguarding cell synchronizing.Fig. 8 is the structured flowchart of subscriber equipment 800.Specifically, subscriber equipment 800 comprises: determination module 810, be used to confirm to need maintain synchronization deexcitation first from the sub-district SCell, it can be a processor; Resource distribution module 820 is used to obtain at a said SCell and sends the logical required SRS resource of reference signal SRS of spy, and it can be realized by another processor; SRS module 830 is used on a said SCell, sending SRS according to said SRS resource, and it can be a controlling equipment; Receiver module 840 is used for receiving and said SRS corresponding response message, and wherein said response message carries the timing advance TA value of the synchronous adjustment that is used for a said SCell, and it can be an interface.

According to the embodiment of the invention, determination module 810 is used to receive said SRS is sent in indication on a SCell SRS transmission Indication message; The said SRS of SRS module 830 responses sends Indication message, according to said SRS resource, on a said SCell, sends SRS.

According to the embodiment of the invention, determination module 810 is used to receive the SCell specify message of specifying a SCell, and wherein the SCell specify message is carried the SCell index information of a Scell, and the SCell specify message is carried the SRS resource information; Resource distribution module 820 is obtained the SRS resource from the SCell specify message that determination module 810 obtains.SRS is sent in the 830 reception indications of SRS module on a SCell SRS sends Indication message, and response SRS transmission Indication message, according to the SRS resource, on a SCell, sends SRS.

According to the embodiment of the invention; When the SCell specify message of appointment the one SCell that determination module 810 receives is also carried indication at least one SCell is activated when a SCell is activated or among the Cell Group under the SCell; Discharge the control information of SRS resource; When a SCell is activated; Resource distribution module 820 discharges the SRS resource according to the control information that discharges the SRS resource, and wherein Cell Group refers to share the Cell set that the Cell of same timing advance TA value forms.

According to the embodiment of the invention; Determination module 810 is used to receive the SCell specify message of specifying a SCell; Wherein the SCell specify message is carried the SCell index information of a Scell, and the SCell specify message is carried SRS resource information, indication send SRS on a SCell SRS and sent indication information and send the resource release indication information that discharges the SRS resource after the SRS; SRS module 830 is used to respond the SCell specify message, sends indication information according to SRS resource information and SRS, on a SCell, sends SRS; Receiver module 840 is used for receiving and SRS corresponding response message, and wherein response message carries the timing advance TA value of the synchronous adjustment that is used for a SCell; Resource distribution module 820 discharges indication information according to resource, discharges the SRS resource.

According to the embodiment of the invention; Determination module 810 is used to receive the deexcitation message with the 2nd SCell deexcitation; And judge whether the 2nd SCell is last SCell that keeps activation in its affiliated subdistrict group; At the 2nd SCell is when last keeps the SCell of activation in its affiliated subdistrict group; It is a SCell that determination module 810 is selected said the 2nd SCell, and perhaps selecting a deexcitation SCell in the 2nd SCell affiliated subdistrict group at random is a SCell, and perhaps selecting cell index maximum or minimum deexcitation SCell is a SCell; Perhaps determination module 810 receptions are with the deexcitation message of cell set Cell Group deexcitation; Selecting a deexcitation SCell among the Cell Group at random is a SCell, and the deexcitation SCell that perhaps selects cell index maximum/minimum among the Cell group is a SCell; 820 resource distribution modules are used on main plot PCell or other SCell that keeps activating, sending SRS and send a request message; Wherein SRS sends a request message and carries the SCell index information that is chosen as a SCell; On a SCell, send SRS with request; And resource distribution module 820 is used to receive the SRS that sends a request message corresponding with SRS and sends response message, and wherein SRS sends SCell index information and the SRS resource information that response message carries a SCell.

According to the embodiment of the invention, resource distribution module 820 is used for the first descending timing difference and first specified threshold between comparison the one SCell and the PCell, perhaps compares a SCell in the difference second descending timing difference and second specified threshold constantly.Greater than first specified threshold or second timing difference during greater than second specified threshold, resource distribution module 820 is sent SRS and is sent a request message on main plot PCell or other SCell that keep activating at first timing difference.

According to the embodiment of the invention; Determination module 810 is used to receive the deexcitation message with the 2nd SCell deexcitation; Deexcitation message is carried at the 2nd SCell and goes up the required resource information of transmission SRS; Determination module 810 is used for judging whether the 2nd SCell is the SCell that last maintenance of its affiliated subdistrict group activates, and is that it was a SCell that determination module is selected the 2nd SCell when last kept the SCell of activation in its affiliated subdistrict group at the 2nd SCell; Perhaps selecting a deexcitation SCell in the 2nd SCell affiliated subdistrict group at random is a SCell, and the deexcitation SCell that perhaps selects cell index maximum/minimum is a SCell; Resource distribution module 820 is used for obtaining the SRS resource from the deexcitation message that determination module 810 receives.

According to the embodiment of the invention, receiver module 840 is used for keeping activating the said response message of reception on the SCell at main plot PCell or other.

As shown in Figure 9, the embodiment of the invention has also proposed a kind of base station equipment 900 of safeguarding cell synchronizing.Fig. 9 is the structured flowchart of base station equipment 900; Specifically; Base station equipment 900 comprises: SCell configuration module 910; The deexcitation that is used to confirm to need maintain synchronization from the sub-district the one SCell be used to be sent in a said SCell and send and visit the logical required SRS resource of reference signal SRS, it can be a processor; Receiver module 920 is used for receiving according to said SRS resource, the SRS that on a said SCell, sends, and it can be a controlling equipment; Sending module 930 is used for sending and said SRS corresponding response message, and wherein said response message carries the timing advance TA value of the synchronous adjustment that is used for a said SCell, and it can be an interface.

According to the embodiment of the invention, SCell configuration module 910 is used to send said SRS is sent in indication on a SCell SRS transmission Indication message; Said receiver module 920 is used for receiving according to said SRS resource, the SRS that on a said SCell, sends.

According to the embodiment of the invention, SCell configuration module 910 is used to send the SCell specify message of specifying a SCell, and wherein the SCell specify message is carried the SCell index information that is designated as a Scell, and the SCell specify message is carried the SRS resource information.SCell configuration module 910 also is used to send SRS is sent in indication on a SCell SRS transmission Indication message, and receiver module 920 is used to respond SRS and sends Indication message, receives according to the SRS resource SRS that on a SCell, sends.

According to the embodiment of the invention; The SCell specify message of appointment the one SCell that SCell configuration module 910 sends is also carried indication when a SCell is activated or at least one SCell among the Cell Group under the SCell when being activated, and discharges the control information of SRS resource.

According to the embodiment of the invention; SCell configuration module 910 sends the SCell specify message of specifying a SCell; Wherein the SCell specify message is carried the SCell index information of a Scell, and the SCell specify message is carried SRS resource information, indication send SRS on a SCell SRS and sent indication information and send the resource release indication information that discharges the SRS resource after the SRS; Receiver module 920 receives response SCell specify message, sends indication information, the SRS that on a SCell, sends according to SRS resource information and SRS; Sending module 930 sends and SRS corresponding response message, and wherein corresponding message is carried the timing advance TA value of the synchronous adjustment that is used for a SCell.

According to the embodiment of the invention; SCell configuration module 910 also is used to send the deexcitation message with the 2nd SCell deexcitation; And reception and deexcitation message corresponding response message; Wherein response message carries the SCell index information of a SCell; SCell configuration module 910 also is used on main plot PCell or other SCell that keeps activating, receiving SRS and sends a request message; Wherein SRS sends a request message and carries the SCell index information that is designated as a SCell, and 910 transmissions of SCell configuration module are sent response message with the SRS that SRS sends a request message corresponding then, and wherein SRS sends SCell index information and the SRS resource information that response message carries a SCell.

According to the embodiment of the invention; SCell configuration module 910 is used to send the deexcitation message with the 2nd SCell deexcitation; Wherein deexcitation message is carried at the 2nd SCell and goes up the required resource information of transmission SRS; And SCell configuration module 910 also is used for receiving and deexcitation message corresponding response message, and wherein response message carries the SCell index information that is designated as a SCell.

Base station equipment and subscriber equipment according to the embodiment of the invention can be realized the described method of the embodiment of the invention smoothly, guarantee under the situation of many TA, safeguard as required deexcitation SCell synchronously, to guarantee the quick active of SCell.

The function that the each several part functional unit is carried out in said base station equipment of present embodiment and the subscriber equipment in detail can be referring to method embodiment before.This base station equipment can be the evolution base station eNodeB in the LTE system; Said subscriber equipment includes but not limited to each Terminal Type, like mobile phone, panel computer or kneetop computer etc.

Those of ordinary skills can recognize; The unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein; Can realize with electronic hardware, computer software or the combination of the two; For the interchangeability of hardware and software clearly is described, the composition and the step of each example described prevailingly according to function in above-mentioned explanation.These functions still are that software mode is carried out with hardware actually, depend on the application-specific and the design constraint of technical scheme.The professional and technical personnel can use distinct methods to realize described function to each certain applications, but this realization should not thought and exceeds scope of the present invention.

The software module that the method for describing in conjunction with embodiment disclosed herein or the step of algorithm can use hardware, processor to carry out, perhaps the combination of the two is implemented.Software module can place the storage medium of any other form known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or the technical field.

Although illustrated and described some embodiments of the present invention, it will be understood by those skilled in the art that under the situation that does not break away from principle of the present invention and spirit can carry out various modifications to these embodiment, such modification should fall in the scope of the present invention.

Claims

1. safeguard and it is characterized in that cell synchronizing method for one kind, comprising:

Need to confirm maintain synchronization deexcitation first from the sub-district SCell;

Obtain at a said SCell and send the logical required SRS resource of reference signal SRS of spy;

According to said SRS resource, on a said SCell, send SRS;

Receive and said SRS corresponding response message, wherein said response message carries the timing advance TA value of the synchronous adjustment that is used for a said SCell.

2. the method for claim 1 is characterized in that, also comprises:

Receive indication and on a said SCell, send the SRS transmission Indication message of said SRS;

Said according to said SRS resource, on a said SCell, send SRS, comprising:

Respond said SRS and send Indication message,, on a said SCell, send SRS according to said SRS resource.

3. method as claimed in claim 2 is characterized in that,

Said SRS is sent in said reception indication on a said SCell SRS sends Indication message, comprising:

Perhaps the sub-district of other activation receives said SRS and sends Indication message from the main plot, and said SRS sends Indication message and comprises the index information of a SCell or the index information of the Cell Group under the SCell.

4. the method for claim 1 is characterized in that,

Said deexcitation that need to confirm maintain synchronization first from the sub-district SCell, comprising:

Receive the SCell specify message of specifying a said SCell, wherein said SCell specify message is carried the SCell index information of a said Scell;

Said obtaining at a said SCell sent the logical required SRS resource of reference signal SRS of spy, comprising:

From said SCell specify message, obtain said SRS resource information.

5. method as claimed in claim 4; It is characterized in that; Said SCell specify message also carry indication when a said SCell is activated or among the Cell Group under the said SCell at least one SCell discharge the control information of said SRS resource when being activated;

Said method further comprises:

When a said SCell is activated, discharge said SRS resource;

Wherein Cell Group refers to share the Cell set that the Cell of same timing advance TA value forms.

6. method as claimed in claim 4 is characterized in that, said SCell specify message is also carried said SRS is sent in indication on a said SCell SRS transmission indication information.

7. method as claimed in claim 6 is characterized in that, said SCell specify message is also carried and sent the resource release indication information that said SRS discharges said SRS resource afterwards;

Said method further comprises:

Discharge indication information according to said resource, discharge said SRS resource.

8. the method for claim 1 is characterized in that,

A said SCell who need to confirm the deexcitation of maintain synchronization comprises:

Reception is with the deexcitation message of the 2nd SCell deexcitation; Selecting said the 2nd SCell is a said SCell; Perhaps selecting a deexcitation SCell in said the 2nd SCell affiliated subdistrict group at random is a said SCell, and perhaps selecting the SCell of the maximum or minimum deexcitation of cell index in the said cell set is a said SCell;

Perhaps; Receive deexcitation message with said the 2nd SCell deexcitation; Judge whether said the 2nd SCell is last SCell that keeps activation in its affiliated subdistrict group; At said the 2nd SCell is when last keeps the SCell of activation in its affiliated subdistrict group; Selecting said the 2nd SCell is a said SCell, and perhaps selecting the SCell of a deexcitation in said the 2nd SCell affiliated subdistrict group at random is a said SCell, and perhaps selecting in the said cell set the maximum or minimum deexcitation SCell of cell index is a said SCell;

Perhaps; After the deexcitation message of reception with said cell set Cell Group deexcitation; Selecting a deexcitation SCell among the said deexcitation Cell Group at random is a said SCell, and perhaps selecting among the said deexcitation Cell group the maximum or minimum deexcitation SCell of cell index is a said SCell;

Perhaps; Receive cell set synchronous maintenance Indication message; When this cell set synchronous maintenance Indication message was used in reference to whole SCell of being shown in the said cell set all by deexcitation, whether said cell set needed maintain synchronization, comprises a said SCell in the said cell set.

9. the method for claim 1 is characterized in that,

On main plot PCell or other SCell that keeps activating, send SRS and send a request message, wherein said SRS sends a request message and carries the SCell index information that is chosen as a said SCell, on a said SCell, sends SRS with request;

Receive the SRS that sends a request message corresponding with said SRS and send response message, wherein said SRS sends response message and carries said SRS resource information.

10. method as claimed in claim 9 is characterized in that,

Send SRS on said SCell that keep activating at main plot PCell or other and send a request message, comprising:

The first descending timing difference and first specified threshold between a more said SCell and the said PCell, a perhaps more said SCell is in the difference second descending timing difference and second specified threshold constantly,

During greater than said second specified threshold, on said main plot PCell or the said SCell that other keep activating, send SRS and send a request message greater than said first specified threshold or the said second descending timing difference at the said first descending timing difference.

11. the method for claim 1 is characterized in that,

Said according to said SRS resource, on a said SCell, send SRS, comprising:

During greater than said second specified threshold,, on a said SCell, send SRS greater than said first specified threshold or the said second descending timing difference at the said first descending timing difference according to said SRS resource.

12. like each described method of claim 1 to 11, it is characterized in that,

Said reception and said SRS corresponding response message comprise:

Keep activating the said response message of reception on the SCell at main plot PCell or other.

13., it is characterized in that said method further comprises like each described method of claim 1 to 11:

If on a said SCell, send after the SRS, in the preset time, perhaps before time alignment timer TAT is overtime, do not receive and said SRS corresponding response message, then send the synchronous maintenance failure status message; Perhaps

If do not receive and said SRS corresponding response message after on a said SCell, sending the preset number of times of SRS; Perhaps after having sent the preset number of times of SRS and in the time of presetting, do not receive and said SRS corresponding response message; Perhaps after having sent the preset number of times of SRS and before the TAT timer expiry, do not receive and said SRS corresponding response message, then send the synchronous maintenance failure status message.

14. safeguard for one kind to it is characterized in that cell synchronizing method, comprising:

Before the time alignment timer TAT timer expiry relevant or when overtime with a SCell; The first descending timing difference and first specified threshold between a more said SCell and the main plot PCell; A perhaps said SCell is in the difference second descending timing difference and second specified threshold constantly

At the said first descending timing difference greater than said first specified threshold or the said second descending timing difference during greater than said second specified threshold, the said TAT timer of resetting.

15. safeguard for one kind to it is characterized in that cell synchronizing method, comprising:

Be sent in a said SCell and send the logical required SRS resource of reference signal SRS of spy;

Be received in a said SCell and go up the SRS that sends;

Send and said SRS corresponding response message, wherein said response message carries the timing advance TA value of the synchronous adjustment that is used for a said SCell.

16. method as claimed in claim 15 is characterized in that, also comprises

Perhaps the sub-district of other activation is sent indication and is sent Indication message at the SRS that a said SCell sends said SRS from the main plot, and said SRS transmission Indication message comprises the index information of a SCell or the index information of the Cell Group under the SCell.

17. method as claimed in claim 15 is characterized in that, also comprises:

Send the SCell specify message of specifying a said SCell, wherein said SCell specify message is carried SCell index information and the said SRS resource information of a said SCell.

18. method as claimed in claim 17; It is characterized in that; Said SCell specify message is also carried indication when a said SCell is activated or at least one SCell among the Cell Group under the said SCell when being activated, and discharges the control information of said SRS resource.

19. method as claimed in claim 17 is characterized in that,

Said SCell specify message is also carried said SRS is sent in indication on a said SCell SRS transmission indication information.

20. method as claimed in claim 17 is characterized in that,

Said SCell specify message is also carried and is sent the resource release indication information that said SRS discharges said SRS resource afterwards.

21. method as claimed in claim 16 is characterized in that,

Selection will deexcitation the 2nd SCell be a said SCell; Perhaps selecting the SCell of a deexcitation in said the 2nd SCell affiliated subdistrict group at random is a said SCell, and perhaps selecting in the said cell set the maximum or minimum deexcitation SCell of cell index is a said SCell.

22. method as claimed in claim 16 is characterized in that, said method also comprises:

Send cell set synchronous maintenance Indication message, when this cell set synchronous maintenance Indication message was used in reference to whole SCell of being shown in the said cell set all by deexcitation, whether said cell set needed maintain synchronization, comprises a said SCell in the said cell set.

23. method as claimed in claim 16 is characterized in that,

The said required SRS resource of said SCell transmission SRS that is sent in comprises:

On main plot PCell or other SCell that keeps activating, receive SRS and send a request message, wherein said SRS sends a request message and carries the SCell index information that is chosen as a said SCell;

Send the SRS that sends a request message corresponding with said SRS and send response message, wherein said SRS sends response message and carries said SRS resource information.

24. like each described method of claim 16 to 23, it is characterized in that,

Said transmission and said SRS corresponding response message comprise:

Keep activating the said response message of transmission on the SCell at main plot PCell or other.

25. a user equipment (UE) of safeguarding cell synchronizing is characterized in that, said subscriber equipment comprises:

Determination module, be used to confirm to need maintain synchronization deexcitation first from the sub-district SCell;

The resource distribution module is used to obtain at a said SCell and sends the logical required SRS resource of reference signal SRS message SRS of spy;

The SRS module is used on a said SCell, sending SRS according to said SRS resource;

Receiver module is used for receiving and said SRS corresponding response message, and wherein said response message carries the timing advance TA value of the synchronous adjustment that is used for a said SCell.

26. subscriber equipment as claimed in claim 25 is characterized in that,

Said determination module also is used to receive the SCell specify message of specifying a said SCell, and wherein said SCell specify message is carried the SCell index information of a said Scell, and said SCell specify message carries said SRS resource information,

Said resource distribution module is obtained said SRS resource from the said SCell specify message that said determination module obtains.

27. subscriber equipment as claimed in claim 26; It is characterized in that; When the SCell specify message of the said SCell of appointment that said determination module receives is also carried indication at least one SCell is activated when a said SCell is activated or among the Cell Group under the said SCell; Discharge the control information of said SRS resource; When a said SCell was activated, said resource distribution module discharged said SRS resource according to the said control information that discharges said SRS resource, and wherein Cell Group refers to share the Cell set that the Cell of same timing advance TA value forms.

28. subscriber equipment as claimed in claim 25 is characterized in that,

Said determination module is used to receive the SCell specify message of specifying a said SCell; Wherein said SCell specify message is carried the SCell index information of a said Scell; And the resource that discharges said SRS resource after said SCell specify message is carried the SRS transmission indication information of said SRS resource information, the indication said SRS of transmission on a said SCell and sent said SRS discharges indication information

Said SRS module is used to respond said SCell specify message, sends indication information according to said SRS resource information and said SRS, on a said SCell, sends SRS;

Said receiver module is used for receiving and said SRS corresponding response message, and wherein said response message carries the timing advance TA value of the synchronous adjustment that is used for a said SCell;

Said resource distribution module discharges indication information according to said resource, discharges said SRS resource.

29. like each described subscriber equipment in the claim 25 to 28, it is characterized in that,

Said determination module also is used to receive the deexcitation message with the 2nd SCell deexcitation; And judge whether said the 2nd SCell is last SCell that keeps activation in its affiliated subdistrict group; At said the 2nd SCell is when last keeps the SCell of activation in its affiliated subdistrict group; It is a said SCell that said determination module is selected said the 2nd SCell; Perhaps selecting a deexcitation SCell in said the 2nd SCell affiliated subdistrict group at random is a said SCell, and perhaps selecting cell index maximum or minimum deexcitation SCell is a said SCell;

Perhaps receive deexcitation message with cell set Cell Group deexcitation; Selecting a deexcitation SCell among the said Cell Group at random is a said SCell, and perhaps selecting among the said Cell group the maximum or minimum deexcitation SCell of cell index is a said SCell;

Said resource distribution module is used on main plot PCell or other SCell that keeps activating, sending SRS and sends a request message; Wherein said SRS sends a request message and carries the SCell index information that is chosen as a said SCell; On a said SCell, send SRS with request; And said resource distribution module is used to receive the SRS that sends a request message corresponding with said SRS and sends response message, and wherein said SRS sends SCell index information and the said SRS resource information that response message carries a said SCell.

30. like each described subscriber equipment in the claim 25 to 28, it is characterized in that,

Said determination module also is used to receive the deexcitation message with the 2nd SCell deexcitation; Said deexcitation message is carried at said the 2nd SCell and goes up the required resource information of transmission SRS; Said determination module is used for judging whether said the 2nd SCell is the SCell that last maintenance of its affiliated subdistrict group activates; At said the 2nd SCell is when last keeps the SCell of activation in its affiliated subdistrict group; It is a said SCell that said determination module is selected said the 2nd SCell; Perhaps selecting a deexcitation SCell in said the 2nd SCell affiliated subdistrict group at random is a said SCell, and perhaps selecting cell index maximum or minimum deexcitation SCell is a said SCell;

Said resource distribution module is used for obtaining said SRS resource from the said deexcitation message that said determination module receives.

31. a base station equipment of safeguarding cell synchronizing is characterized in that, said base station equipment comprises:

The SCell configuration module, be used to confirm to need maintain synchronization deexcitation first from the sub-district SCell be used to be sent in a said SCell and send and visit the logical required SRS resource of reference signal SRS;

Receiver module is used to be received in a said SCell and goes up the SRS that sends;

Sending module is used for sending and said SRS corresponding response message, and wherein said response message carries the timing advance TA value of the synchronous adjustment that is used for a said SCell.

32. base station equipment as claimed in claim 31 is characterized in that,

Said SCell configuration module also is used to send the SCell specify message of specifying a said SCell, and wherein said SCell specify message is carried SCell index information and the said SRS resource information of a said Scell.

33. like claim 31 or 32 described base station equipments; It is characterized in that; The SCell specify message of the said SCell of appointment that said SCell configuration module sends is also carried indication when a said SCell is activated or at least one SCell among the Cell Group under the said SCell when being activated, and discharges the control information of said SRS resource.