CN102932901A - Method and device for synchronous cell maintenance of multi-carrier communication system - Google Patents
Method and device for synchronous cell maintenance of multi-carrier communication system Download PDFInfo
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- CN102932901A CN102932901A CN2011102260809A CN201110226080A CN102932901A CN 102932901 A CN102932901 A CN 102932901A CN 2011102260809 A CN2011102260809 A CN 2011102260809A CN 201110226080 A CN201110226080 A CN 201110226080A CN 102932901 A CN102932901 A CN 102932901A
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Abstract
The invention discloses a method and a device for synchronous cell maintenance of a multi-carrier communication system. The method comprises the steps: under the condition that a plurality of cell subgroups exist, when user equipment maintains a time alignment timer (TAT) only in a subgroup containing a main cell, the user equipment determines whether an auxiliary cell in a subgroups containing the auxiliary cell only in a synchronization state according to a predetermined rule or an indication of a base station. The method and the device disclosed by the invention have the advantage of solving the problems that because the user equipment maintains the TAT only in the subgroup of the main cell, the UE cannot acquire the synchronization condition of a cell in the subgroup only containing the auxiliary cell and thus is likely to carry out uplink signal transmission when the cell in the auxiliary cell subgroup is in a step-out state and a base station side cannot receive uplink signals transmitted by the cells correctly.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of cell synchronous maintaining method and device of multi-carrier communications systems.
Background technology
Advanced long-term evolution system (Long Term Evolution Advance, referred to as LTE-Advanced) in introduced a lot of new technologies and satisfied senior international wireless communication system (International Mobile Telecommunication Advance, referred to as IMT-Advance) primary demand, wherein a most important technology is exactly carrier aggregation.
Because the property in short supply of radio spectrum resources, the index of IMT-Advanced requirement peak rate is higher (supports 100Mbps under the high mobility, support 1Gbps under the Hypomobility), can't satisfy the IMT-Advanced requirement with the bandwidth of the maximum 20MHz of present LTE standard.Therefore need to extend to more high bandwidth, such as 40MHz, 60MHz, in addition higher.One of method that improves bandwidth and peak rate is that frequency domain is expanded, and for example, several LTE frequency bands based on 20MHz is carried out bandwidth by the mode of " carrier aggregation " enlarge the essence of carrier aggregation technology that Here it is.Therefore, the LTE-Advanced system also belongs to multicarrier system.
In the LTE-Advanced system, the carrier wave that participates in polymerization is called as component carrier (Component Carrier), subscriber equipment (User Equipment is referred to as UE) can be simultaneously on a plurality of component carriers and base station (eNB) receive and dispatch transmission.Component carrier can use the defined frequency range of LTE, also can use the frequency range that increases newly specially as LTE-Advanced.Nervous based on present frequency spectrum resource, can not always there be component carrier continuous on the frequency domain can distribute to operator and uses, therefore, component carrier can be continuous on frequency band, also can be discontinuous.Introduced the concept of main plot and auxiliary residential quarter in the carrier aggregation, the main plot refers to that UE initiates the residential quarter that Radio Resource control (Radio Resource Control is referred to as RRC) connects foundation or RRC connection reconstruction or be designated as the main plot in handoff procedure; Auxiliary residential quarter refers to be different from the frequency of main plot, and configures after UE enters the RRC connection status, is used for providing extra Radio Resource.In carrier aggregation system, Serving cell comprises main Serving cell and auxiliary serving cell.
After introducing carrier aggregation technology, UE can receive and dispatch transmission at a plurality of Serving cells simultaneously at RRC connected state (RRC_CONNECTED), but the UE for Idle state (RRC_IDLE), identical with the LTE system, only can reside on the residential quarter, UE is after successfully accessing on this residential quarter, be that UE is after the RRC connection is set up in this residential quarter, according to service needed, the base station can be that UE distributes newly-increased residential quarter by the special RRC signaling, distribute base station and the not immediately enterprising row data transmitting-receiving in this newly-increased residential quarter of UE behind these newly-increased residential quarters, be that the base station does not send business datum to UE on this newly-increased residential quarter, UE preserves the configuration information on this residential quarter, does not also send business datum to the base station on this residential quarter, waits for the further action of base station.Subsequent base stations can activate this residential quarter according to service needed, and after this residential quarter was activated, base station and UE be enterprising row data transmitting-receiving in this residential quarter.UE is at deexcitation timer of each auxiliary cell maintenance, and the duration of timer is configured by the base station.Duration according to timer is different, the deexcitation of auxiliary residential quarter both can be controlled by UE, be timer duration then, also can be controlled by the base station, be that timer duration is configured to infinity, the base station sends auxiliary residential quarter deexcitation media access control layer (Media Access Control is referred to as MAC) the auxiliary residential quarter of control element deexcitation.
In the LTE system, in order to realize and to keep uplink synchronous between subscriber equipment and the base station, the base station is according to propagation delay time transmitting time lead (the Timing Advance between base station and each subscriber equipment, referred to as TA) to each subscriber equipment, the opportunity that the Timing Advance that subscriber equipment sends according to the base station shifts to an earlier date or postpones separately uplink, thereby remedy subscriber equipment to the propagation delay time of base station, so that the upward signal of different user devices all arrives the base station within the receive window of base station.If for the propagation delay time of each minizone in the residential quarter of certain subscriber equipment (UE) configuration differs larger, can't use identical TA, then in carrier aggregation system, need to introduce the concept of many TA.According to the situation of using TA, can with using the UE of identical TA to be placed in same group, namely the TA according to each UE be divided into groups to each UE.
In present carrier aggregation system, all carrier waves use identical TA, and the residential quarter of timer (being TAT) is also adjusted simultaneously as the residential quarter that receives the TA control element in the main plot as preventive maintenance time.According to present principle, UE starts TAT in initial random access procedure, safeguards TAT at main Serving cell, under the TAT running status, restarts TAT when the TA control element of base station transmission is received in the main plot.After introducing the concept of grouping and many TA, if still in main Serving cell startup and safeguard and then can't safeguard the cell synchronous state in the grouping that only comprises auxiliary serving cell by TAT.In addition, although use a TAT maintain synchronization state can make the UE complexity lower, and assurance backward compatibility, but at present in the situation that there are a plurality of cell group in the carrier aggregation system, do not provide UE and how only to use a TAT to carry out the solution that all residential quarters comprise that the synchronous regime of the residential quarter in the grouping that only comprises auxiliary residential quarter is safeguarded.
Summary of the invention
Main purpose of the present invention is to provide a kind of cell synchronous method and device of multi-carrier communications systems, to address the above problem at least.
According to an aspect of the present invention, a kind of cell synchronous maintaining method of multi-carrier communications systems is provided, comprise: subscriber equipment is according to the rule of making an appointment or according to the indication of base station, and whether the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter is in synchronous regime.
Preferably, subscriber equipment is according to the indication of base station, whether the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter is in synchronous regime, comprise: described subscriber equipment receives activation or the deexcitation MAC control element that only comprises the auxiliary residential quarter in the grouping of auxiliary residential quarter from described base station described, wherein, carry the current whether synchronous indication information in auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter of indication in described activation or the deexcitation MAC control element; Described subscriber equipment determines according to described indication information whether the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter is in synchronous regime.
Preferably, described subscriber equipment is determined according to described indication information whether auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter enters or leave synchronous regime and comprised: the auxiliary residential quarter that described indication information indication is described only to be comprised in the grouping of auxiliary residential quarter is in desynchronizing state, after auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter was activated, described subscriber equipment initiatively initiated uplink synchronous or receive auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter of the indication of described base station transmission in described Preset Time to carry out initiating uplink synchronous in the situation of order of uplink synchronous in Preset Time; Described subscriber equipment determines that described auxiliary residential quarter enters synchronous regime.
Preferably, subscriber equipment is according to the rule of making an appointment, the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter enters or leaves synchronous regime, comprise: described subscriber equipment according to activate or the described grouping that only comprises auxiliary residential quarter of deexcitation in auxiliary residential quarter, the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter enters or leaves synchronous regime.
Preferably, described subscriber equipment is according to the auxiliary residential quarter of activating in the described grouping that only comprises auxiliary residential quarter, the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter enters or leave synchronous regime, comprising: described subscriber equipment receives the activation MAC control element that only comprises the auxiliary residential quarter in the grouping of auxiliary residential quarter from described base station described; Described subscriber equipment determines that the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter enters synchronous regime; Perhaps, at the appointed time after, described subscriber equipment determines that the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter enters synchronous regime; Perhaps, do not receive the order of the execution uplink synchronous that described base station sends within the described fixed time, described subscriber equipment determines that the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter enters synchronous regime; Perhaps, described subscriber equipment finishes to determine to enter synchronous regime in the execution uplink synchronous.
Preferably, described subscriber equipment is according to the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter of deexcitation, the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter enters or leaves synchronous regime, comprise: described subscriber equipment deexcitation is described only to comprise auxiliary residential quarter in the grouping of auxiliary residential quarter, determines that synchronous regime is left in the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter.
Preferably, described method also comprises: described subscriber equipment initiating random access procedure on the main plot, when receiving time adjustment (TA) value that comprises in the accidental access response message (RAR), start or restart the time adjustment timer (TAT) of main plot.
Preferably, described method also comprises: described subscriber equipment receives the time adjustment MAC control element that comprises described main plot, restarts described TAT; Described subscriber equipment is forbidden described TAT is carried out arbitrarily operation in described main plot or the described grouping that only comprises auxiliary residential quarter when receiving the MAC control element of adjusting for the grouping of the described auxiliary residential quarter time of carrying out.
Preferably, described method also comprises: the described TAT at described subscriber equipment is soon overtime, auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter is activated and when being in synchronous regime, described base station sends auxiliary residential quarter deexcitation MAC control element, all auxiliary residential quarters in the described grouping that only comprises auxiliary residential quarter of indication deexcitation, wherein, carry the sign of the described auxiliary residential quarter of indication step-out in the described auxiliary residential quarter deexcitation MAC control element, described subscriber equipment is according to described auxiliary residential quarter deexcitation MAC control element, deexcitation is described only to comprise all auxiliary residential quarters in the grouping of auxiliary residential quarter and periodicity interception reference signal (SRS) resource of the described auxiliary residential quarter of deletion deexcitation; Perhaps the described TAT of described main plot is overtime, and described subscriber equipment is determined the deexcitation of auxiliary residential quarter and the step-out in the described grouping that only comprises auxiliary residential quarter, deletes the periodicity SRS resource of each the auxiliary residential quarter in this auxiliary cell group.
Preferably, described method also comprises: the auxiliary residential quarter step-out in the described grouping that only comprises auxiliary residential quarter, and the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter is in state of activation, and described base station sends auxiliary residential quarter deexcitation MAC control element to described subscriber equipment; Described subscriber equipment receives described auxiliary residential quarter deexcitation MAC control element, the described auxiliary residential quarter of deexcitation.
Preferably, after the described auxiliary residential quarter of described subscriber equipment deexcitation, described method also comprises: described base station sends Radio Resource control (RRC) to described subscriber equipment and connects reallocation message, deletes the periodicity interception reference signal resource of all auxiliary residential quarters in the described grouping that only comprises auxiliary residential quarter; Perhaps described base station sends RRC and connects reallocation message, deletes all auxiliary residential quarters in the described grouping that only comprises auxiliary residential quarter.
Preferably, described method also comprises: when described only comprise auxiliary residential quarters all in the grouping of auxiliary residential quarter and all be deactivated after, described subscriber equipment determines that the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter leaves synchronous regime; Described subscriber equipment discharges the periodicity SRS resource of the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter.
Preferably, described method also comprises: when described when only comprising all in the grouping of auxiliary residential quarter auxiliary residential quarters step-out, described base station sends auxiliary residential quarter deexcitation MAC control element to described subscriber equipment, carries the step-out indication of described auxiliary residential quarter in this auxiliary residential quarter deexcitation MAC control element; Described subscriber equipment receives described auxiliary residential quarter deexcitation MAC control element, according to described step-out indication, and the described auxiliary residential quarter of deexcitation, and the periodicity SRS resource of the described auxiliary residential quarter of release step-out.
According to a further aspect in the invention, provide a kind of cell synchronous attending device of multi-carrier communications systems, be positioned at user equipment side, having comprised: acquisition module is used for obtaining the rule of making an appointment or the indication of base station; Maintenance module is used for according to described rule of making an appointment or according to the indication of described base station, and whether the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter is in synchronous regime.
By the present invention, in the situation that there are a plurality of cell group, when subscriber equipment is only comprising in the grouping of main plot the time unifying timer, subscriber equipment is according to the rule of making an appointment or according to the indication of base station, whether the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter is in synchronous regime, and do not need by the grouping that only comprises auxiliary residential quarter is safeguarded TAT realize only comprising residential quarter in the grouping of auxiliary residential quarter synchronously, thereby solved when subscriber equipment and only in the grouping that comprises the main plot, safeguarded TAT, subscriber equipment can't be learnt the sync status of the residential quarter in the grouping that only comprises auxiliary residential quarter, thereby carry out the transmission of upward signal when might the residential quarter in auxiliary cell group being in desynchronizing state, base station side can't correctly receive the problem of the upward signal that sends on these residential quarters, and then reduced the complexity of UE, and guaranteed to comprise the backwards compatibility that the grouping of main plot is safeguarded.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation according to the cell synchronous device of the multi-carrier communications systems of the embodiment of the invention;
Fig. 2 is the flow chart according to the cell synchronous method of the multi-carrier communications systems of the embodiment of the invention;
Fig. 3 is the schematic diagram according to the covering of the carrier aggregation of the embodiment of the invention;
Fig. 4 is the signaling process figure according to the embodiment of the invention two;
Fig. 5 is the signaling process figure according to the embodiment of the invention three;
Fig. 6 is the signaling process figure according to the embodiment of the invention four
Fig. 7 is the signaling process figure according to the embodiment of the invention five;
Fig. 8 is the signaling process figure according to the embodiment of the invention six;
Fig. 9 is the signaling process figure according to the embodiment of the invention seven.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.
For in the correlation technique after introducing grouping and many TA, only use a TAT can't carry out the problem that all residential quarters comprise that the synchronous regime of the auxiliary residential quarter in the grouping that only comprises auxiliary residential quarter is safeguarded, the embodiment of the invention is improved subscriber equipment, in the situation that there are a plurality of cell group, when subscriber equipment is only comprising in the grouping of main plot preventive maintenance time alignment timer (TAT), subscriber equipment is according to the rule of making an appointment or according to the indication of base station, and whether the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter is in synchronous regime.Thereby solved when subscriber equipment and only in the grouping that comprises the main plot, safeguarded TAT, subscriber equipment can't be learnt the sync status of the residential quarter in the grouping that only comprises auxiliary residential quarter, thereby carry out the transmission of upward signal when might the residential quarter in auxiliary cell group being in desynchronizing state, base station side can't correctly receive the problem of the upward signal that sends on these residential quarters.
Fig. 1 is the structural representation according to the cell synchronous device of the multi-carrier communications systems of the embodiment of the invention, this device can be positioned at user equipment side, as shown in Figure 1, this device mainly comprises: acquisition module 10 is used for obtaining the rule of making an appointment or the indication of base station; Maintenance module 20 is connected with acquisition module 10, is used for according to described rule of making an appointment or according to the indication of described base station, and whether the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter is in synchronous regime.
The said apparatus that provides by the embodiment of the invention, can be according to the rule of making an appointment or according to the indication of base station, whether the auxiliary residential quarter that determines whether only to comprise in the grouping of auxiliary residential quarter is in synchronous regime, and do not need to rely on TAT safeguard auxiliary residential quarter in the auxiliary cell group synchronously, thereby so that can realize that the synchronous regime of all residential quarters safeguards with a TAT.
In the preferred implementation of the embodiment of the invention, this device can be safeguarded cell synchronous according to the implementation that following embodiment describes.
Fig. 2 is according to the flow chart of the cell synchronous maintaining method of the multi-carrier communications systems of the embodiment of the invention, and as shown in Figure 2, the method mainly may further comprise the steps:
Step S202, UE determine to exist a plurality of cell group, and UE only safeguards TAT in the grouping that comprises the main plot;
Step S204, UE be according to the rule of making an appointment or according to the indication of base station, and whether the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter is in synchronous regime.
The said method that provides by the embodiment of the invention, for the grouping that only comprises auxiliary residential quarter, subscriber equipment can be according to the rule of making an appointment or according to the indication of base station, whether the auxiliary residential quarter that determines whether only to comprise in the grouping of auxiliary residential quarter is in synchronous regime, and do not need to rely on TAT safeguard auxiliary residential quarter in the auxiliary cell group synchronously, thereby so that can realize that the synchronous regime of all residential quarters safeguards with a TAT.
For example, the base station can be in the grouping that only comprises auxiliary residential quarter that sends to UE the activation of auxiliary residential quarter or deexcitation MAC control element in carry the current whether synchronous indication information in auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter of indication, whether the auxiliary residential quarter that UE can determine only to comprise according to this indication information in the grouping of auxiliary residential quarter enters or leaves synchronous regime.
Wherein, if the auxiliary residential quarter that indication information indication is described only to be comprised in the grouping of auxiliary residential quarter is in desynchronizing state, after auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter was activated, described subscriber equipment initiatively initiated uplink synchronous or receive auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter of the indication of described base station transmission in described Preset Time to carry out initiating uplink synchronous in the situation of order of uplink synchronous in Preset Time; Then, described subscriber equipment determines that described auxiliary residential quarter enters synchronous regime.If the auxiliary residential quarter that the indication of this indication information is described only to be comprised in the grouping of auxiliary residential quarter is in synchronous regime, then UE determines that the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter is in synchronous regime.
Perhaps, subscriber equipment also can be according to the rule of making an appointment, and the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter enters or leave synchronous regime.For example, UE can according to current be activate or the described grouping that only comprises auxiliary residential quarter of deexcitation in auxiliary residential quarter, the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter enters or leaves synchronous regime.For example, the activation MAC control element of the auxiliary residential quarter of UE in receiving the grouping that only comprises auxiliary residential quarter from base station described, UE activates the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter, determines that the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter enters synchronous regime; Perhaps, at the appointed time after, described subscriber equipment determines that the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter enters synchronous regime; Perhaps, do not receive the order of the execution uplink synchronous that described base station sends within the described fixed time, described subscriber equipment determines that the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter enters synchronous regime; Perhaps, described subscriber equipment finishes to determine to enter synchronous regime in the execution uplink synchronous.
Perhaps, UE is according to being auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter of deexcitation, determine only to comprise the auxiliary cell synchronous state in the grouping of auxiliary residential quarter, for example, after the operation of the auxiliary residential quarter of UE in carrying out the described grouping that only comprises auxiliary residential quarter of deexcitation, determine that synchronous regime is left in the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter.
In a preferred implementation of the embodiment of the invention, the method also comprises: UE is initiating random access procedure on the main plot, receive accidental access response message (Random Access Response, referred to as RAR) in time of comprising when adjusting (TA) value, start or restart the time adjustment timer (TAT) of main plot.
Wherein, UE is receiving the time adjustment MAC control element that comprises described main plot, restart described TAT, then UE forbids described TAT is carried out arbitrarily operation in described main plot or the described grouping that only comprises auxiliary residential quarter when receiving the MAC control element of adjusting for the described auxiliary cell group time of carrying out.
Wherein, above-mentioned TAT at UE is soon overtime, if only comprise that auxiliary residential quarter in the grouping of auxiliary residential quarter is activated and when being in synchronous regime, then the base station sends auxiliary residential quarter deexcitation MAC control element, the indication deexcitation only comprises all the auxiliary residential quarters in the grouping of auxiliary residential quarter, wherein, carry the sign of the described auxiliary residential quarter of indication step-out in the described auxiliary residential quarter deexcitation MAC control element, UE is according to this auxiliary residential quarter deexcitation MAC control element, deexcitation is described only to comprise all auxiliary residential quarters in the grouping of auxiliary residential quarter, and periodicity interception reference signal SRS (Sounding reference signal, SRS) the money resource of the described auxiliary residential quarter of deletion deexcitation; Perhaps the TAT of main plot is overtime, and UE determines the deexcitation of auxiliary residential quarter and the step-out in the described grouping that only comprises auxiliary residential quarter, deletes the periodicity SRS resource of each the auxiliary residential quarter in this auxiliary cell group.
In a preferred implementation of the embodiment of the invention, auxiliary residential quarter step-out in the described grouping that only comprises auxiliary residential quarter, and the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter is in state of activation, and described base station sends auxiliary residential quarter deexcitation MAC control element to UE; UE receives described auxiliary residential quarter deexcitation MAC control element, the described auxiliary residential quarter of deexcitation.Preferably, after the described auxiliary residential quarter of UE deexcitation, the base station sends Radio Resource control (RRC) to UE and connects reallocation message, deletes periodicity interception reference signal (Sounding reference signal, the SRS) resource of all auxiliary residential quarters in the described grouping that only comprises auxiliary residential quarter; Perhaps the base station sends RRC and connects reallocation message, deletes all auxiliary residential quarters in the described grouping that only comprises auxiliary residential quarter.
In another preferred implementation of the embodiment of the invention, when described only comprise auxiliary residential quarters all in the grouping of auxiliary residential quarter and all be deactivated after, UE determines that the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter leaves synchronous regime, discharges the periodicity SRS resource of the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter.
In another preferred implementation of the embodiment of the invention, when described when only comprising all in the grouping of auxiliary residential quarter auxiliary residential quarters step-out, the base station sends auxiliary residential quarter deexcitation MAC control element to UE, carries the step-out indication of described auxiliary residential quarter in this auxiliary residential quarter deexcitation MAC control element; UE receives this auxiliary residential quarter deexcitation MAC control element, according to described step-out indication, and the described auxiliary residential quarter of deexcitation, and the periodicity SRS resource of the described auxiliary residential quarter of release step-out.By the above-mentioned preferred implementation of the embodiment of the invention, can save the SRS resource.
Embodiment one
In the present embodiment, respectively to the technical scheme that adopts the embodiment of the invention to provide carry out the TAT maintenance process, only comprise auxiliary residential quarter in the grouping of auxiliary residential quarter synchronously/step-out is safeguarded and the TAT timeout treatment describes.
One, the maintenance process of TAT
In the present embodiment, start TAT when UE receives RAR in the process that the main plot is accessed at random, when UE received the MAC control element (being TAC) of the time adjustment that comprises the main plot, TAT was restarted.And the interpolation of auxiliary residential quarter, activation, deexcitation, uplink synchronous and deletion do not produce any impact to this TAT.
When UE receives the TAC that adjusts for the grouping that only the comprises auxiliary residential quarter time of carrying out, above-mentioned TAT is not produced any impact.The TAC that only comprises the grouping use of auxiliary residential quarter can receive by the main plot, also can receive by auxiliary residential quarter.When UE receives the TAC of auxiliary cell group adjustment use in the main plot, judge that according to the sign among the TAC this TAC is not used in the time adjustment of main plot, does not then adjust TAT; UE also can receive in auxiliary cell group and be used for the TAC that this grouping is adjusted, and do not produce any impact to TAT this moment.
Two, only comprise auxiliary residential quarter in the grouping of auxiliary residential quarter synchronous step-out safeguard
Owing to the TAC in the grouping that only comprises auxiliary residential quarter does not produce any impact to TAT, therefore, the residential quarter that only comprises in the grouping of auxiliary residential quarter in the TAT operation phase may be in desynchronizing state, in addition, the synchronous regime of all residential quarters in this grouping is consistent with desynchronizing state, namely do not exist a residential quarter to be in synchronous regime, the another one residential quarter is in the situation of desynchronizing state.In the present embodiment, the foundation of the synchronous regime of the auxiliary residential quarter in this grouping, synchronously the maintenance of desynchronizing state be described below:
Only comprise the foundation of auxiliary cell synchronous state in the grouping of auxiliary residential quarter:
After auxiliary residential quarter activation MAC control element and activation were received in residential quarter in the auxiliary cell group, at the appointed time the interior base station transmission message of waiting for indicated this residential quarter to carry out the uplink synchronous process; If the base station does not send the uplink synchronous indication after the fixed time to this residential quarter, then UE thinks that this residential quarter does not need to carry out uplink synchronous; If receive the uplink synchronous indication that the base station sends to this residential quarter in the fixed time, then select this residential quarter to carry out the uplink synchronous process.
Wherein, the above-mentioned fixed time can be 0, and namely UE thinks, auxiliary residential quarter enters synchronous regime after activating automatically.
Perhaps, in the present embodiment, can be for the auxiliary residential quarter that only comprises in the auxiliary cell group, introduce a kind of new auxiliary residential quarter and activate the MAC control element, this auxiliary residential quarter is activated and is carried the current whether synchronous indicating bit in the auxiliary residential quarter of indication in MAC control element, after UE receives that the MAC control element is activated in auxiliary residential quarter, judge according to this indicating bit whether needs carried out uplink synchronous after auxiliary residential quarter was activated:
(1) if auxiliary residential quarter is in desynchronizing state, after then auxiliary residential quarter is activated, wait for that the base station sends the order that the auxiliary residential quarter of indication is activated at the appointed time, receive this order after, the uplink synchronous process of this initiation base station, auxiliary residential quarter enters synchronous regime after uplink synchronous is finished; Do not receive that yet the base station indicates this residential quarter to initiate the order of uplink synchronous, the then automatic deexcitation in this residential quarter if wait for overtime rear UE of fixed time.
In a period of time, UE selected auxiliary residential quarter to initiate the uplink synchronous process voluntarily after perhaps this auxiliary residential quarter was activated.
(2) if the MAC control element indicates auxiliary residential quarter to be in synchronous regime, then UE thinks and is in synchronous regime after auxiliary residential quarter is activated;
The step-out that only comprises the auxiliary residential quarter in the grouping of auxiliary residential quarter is processed:
When the residential quarter step-out in the grouping that only comprises auxiliary residential quarter, if the auxiliary residential quarter in the auxiliary cell group is in state of activation, then the base station sends the auxiliary residential quarter of auxiliary residential quarter deexcitation MAC control element deexcitation step-out; After the deexcitation of auxiliary residential quarter, the base station sends RRC and connects SRS (the Sounding Reference Signal interception reference signal) resource that reallocation message is deleted all auxiliary residential quarters in this auxiliary cell set; Perhaps the base station sends all auxiliary residential quarters in this auxiliary cell set of RRC connection reallocation message deletion.
Perhaps, after residential quarters all in the grouping that only comprises auxiliary residential quarter all is deactivated, UE determines that the residential quarter in this grouping this moment enters desynchronizing state, then UE discharges the SRS resource of auxiliary residential quarter in this grouping, for example, can notify the high level (for example RRC) of UE to discharge the SRS resource of the auxiliary residential quarter in this grouping.
Perhaps, when the residential quarter step-out in the grouping that only comprises auxiliary residential quarter, in the present embodiment, also can introduce a kind of new auxiliary residential quarter deexcitation MAC control element, the base station sends the auxiliary residential quarter of this control element deexcitation step-out, and carries this auxiliary residential quarter step-out indication in this deexcitation MAC control element.After UE receives auxiliary residential quarter deexcitation MAC control element, find this auxiliary residential quarter step-out of flag bit indication in this auxiliary residential quarter deexcitation MAC control element, this auxiliary residential quarter of UE deexcitation then, and the periodicity SRS resource in the release out-of-sync cells, for example, can notify periodicity SRS resource in the auxiliary residential quarter that the high level (for example RRC) of UE discharges step-out.
At the present embodiment, the auxiliary residential quarter activation/deactivation MAC control element of introducing can adopt the structure shown in the table 1.
Table 1.
In table 1, Ci: auxiliary residential quarter activation/deactivation sign; I: cell ID (span of i is 1～7); Ci represented that deexcitation was numbered the auxiliary residential quarter of i at 0 o'clock, and Ci is that 1 expression activates the auxiliary residential quarter that is numbered i;
Ii: the residing state of indication current area, synchronous or step-out.I: cell ID (span of i is 1～7);
Ii is 0 o'clock, and the expression cell ID is that the auxiliary residential quarter activation of i (span of i is 1～7) is in synchronous regime;
Ii is 1 o'clock, and the expression cell ID is to be in desynchronizing state after the auxiliary residential quarter of i is activated;
Ri: keep the position, the span of i is 1～2, is set to 0.
Three, the processing of TAT after overtime:
Soon overtime as the TAT of the main plot of subscriber equipment, auxiliary residential quarter in the grouping of auxiliary residential quarter is activated and when being in synchronous regime, the base station sends all the auxiliary residential quarters in the new auxiliary cell group of auxiliary residential quarter deexcitation MAC control element deexcitation but only comprise.Identify auxiliary residential quarter step-out in the auxiliary residential quarter deexcitation MAC control element this moment, the periodicity SRS resource of UE (for example, the high level (for example RRC) of notice UE) the auxiliary residential quarter of deletion deexcitation.For example, the base station can judge whether the main plot TAT of subscriber equipment is soon overtime by TAT corresponding to TAT maintenance and main plot subscriber equipment of oneself.
Perhaps, overtime as the TAT of main plot, UE determines only to comprise the deexcitation of auxiliary residential quarter and the step-out in the grouping of auxiliary residential quarter, and UE notifies its high-rise periodicity SRS resource of deleting these residential quarters such as RRC.
The below is described for example with mode of frequency division duplexing (Frequency Division Duplex is referred to as FDD).
Fig. 3 is the schematic diagram according to the covering of the carrier aggregation of the embodiment of the invention, and as shown in Figure 3, Serving cell 1 (descending frequency f1, up frequency f1 ') is referred to as CC1 (DL f1, UL f1 '); Serving cell 2 (descending frequency f2, up frequency f2 ') is referred to as CC2 (DL f2, UL f2 '); Serving cell 3 (descending frequency f3, up frequency f3 ') can carry out carrier aggregation.User equipment (UE) resides in CC1 and upward and at CC1 initiates the RRC connection procedure, and CC1 thinks the main Serving cell of UE, and CC1 is in group 1.Serving cell CC2 and CC3 are auxiliary residential quarter, in group 2.CC1 is respectively 1～3 to the residential quarter sign of CC3.
The embodiment of the invention is to be solved to be synchronous problem how to safeguard auxiliary residential quarter when only using a TAT in the carrier aggregation system of many TA in the clear and definite grouping that only comprises auxiliary residential quarter.In embodiments of the present invention, the MAC agreement of UE produced changes, introduces new auxiliary residential quarter MAC control element structure, indicate auxiliary residential quarter in the grouping that only comprises auxiliary residential quarter synchronous/desynchronizing state; How to indicate auxiliary residential quarter to carry out the initial uplink synchronizing process in the clear and definite grouping that only comprises auxiliary residential quarter; When needing the clear and definite TAT that comprises in the main plot overtime, the base station is to the processing of auxiliary residential quarter; In the grouping that only comprises auxiliary residential quarter, if this group residential quarter is in the processing behind the asynchronous regime, and to the description of the problems such as processing of the cycle SRS signal resource of these cell configuration.
Embodiment two
Fig. 4 is the signaling process figure of the embodiment of the invention two, as shown in Figure 4, carries out the synchronous regime maintenance in the present embodiment and mainly may further comprise the steps:
Step 401:UE initiates RRC at CC1 and connects, receive the TA in the accidental access response message in the random access procedure on CC1 after TAT start; The base station connects information and the grouping information that configures CC2 and CC3 in the reallocation message to UE at RRC.CC1 is main Serving cell, composition group 1, and CC2 and CC3 are auxiliary serving cell, composition group 2; Configuring the TAT duration at CC1 is 1280ms; The auxiliary residential quarter deexcitation timer of base station configuration CC2 and CC3 is infinitely great; After activating, auxiliary residential quarter do not receive in certain period that the uplink synchronous command of base station thinks that then need not initiate uplink synchronous directly enters synchronous regime;
Wherein, this section period can be (being appointed as 10ms in the present embodiment) of agreement appointment, also can connect reallocation message by RRC and be configured to UE by the base station.
Step 402: the base station sends auxiliary residential quarter and activates the MAC control element, activates CC2 and CC3;
Step 403: the base station indicates UE to initiate up initial synchronization at CC2 after CC2 activates in the 10ms;
If UE does not receive the base station indication in the message of the up initial synchronization of CC3 initiation in 10ms, then CC3 need not to initiate the uplink synchronous process after activating.
The uplink synchronous of step 404:UE initiating random access procedure foundation group 2 on CC2, after uplink synchronous was finished, CC2 entered synchronous regime, and the CC3 in the same grouping also enters synchronous regime.UE begins to send SRS at CC2 and CC3;
Step 405: the base station sends the TA control element and organizes 2 time adjustment in the auxiliary residential quarter of group 2, do not produce any impact to TAT this moment;
Step 406: after a period of time, CC2 and CC3 are in state of activation and step-out, and the base station sends auxiliary residential quarter deexcitation MAC control element deexcitation CC2 and CC3;
Step 407:UE uses the auxiliary residential quarter deexcitation MAC control element of deexcitation CC2 and CC3, deexcitation CC2 and CC3;
Step 408: the base station sends RRC and connects the periodicity SRS resource that reallocation message notice UE discharges CC2 and CC3 configuration;
Step 409:UE uses RRC and connects reallocation message, the periodicity SRS resource of deletion CC2 and CC3.
Embodiment three
Fig. 5 is the signaling process figure of the cell synchronous state-maintenance in the multi-carrier communications systems in the embodiment of the invention three, and as shown in Figure 5, what the present embodiment small area synchronous regime was safeguarded mainly may further comprise the steps:
Step 501:UE initiates RRC at CC1 and connects, receive the TA in the accidental access response message in the random access procedure on CC1 after TAT start; The base station connects information and the grouping information that configures CC2 and CC3 in the reallocation message to UE at RRC.CC1 is main Serving cell, composition group 1, and CC2 and CC3 are auxiliary serving cell, composition group 2; Configuring the TAT duration at CC1 is 1280ms; The auxiliary residential quarter deexcitation timer of base station configuration CC2 and CC3 is infinitely great; After activating, auxiliary residential quarter do not receive in certain period that the uplink synchronous command of base station thinks that then need not initiate uplink synchronous directly enters synchronous regime;
Wherein, this section period can be (being appointed as 10ms in the present embodiment) of agreement appointment, also can connect reallocation message by RRC and be configured to UE by the base station.
Step 502: the base station sends auxiliary residential quarter and activates the MAC control element, activates CC2 and CC3;
Step 503: base station indication UE in CC2 activates 10ms initiates up initial synchronization at CC2;
If UE does not receive the base station indication in the message of the up initial synchronization of CC3 initiation in 10ms, then CC3 need not to initiate the uplink synchronous process after activating
The uplink synchronous of step 504:UE initiating random access procedure foundation group 2 on CC2, after uplink synchronous was finished, CC2 entered synchronous regime, and the CC3 in the same grouping also enters synchronous regime.UE begins to send SRS at CC2 and CC3;
Step 505: the base station sends the TA control element and organizes 2 time adjustment in the auxiliary residential quarter of group 2, do not produce any impact to TAT this moment;
Step 506: after a period of time, CC2 and CC3 are in state of activation and step-out, and the base station sends auxiliary residential quarter deexcitation MAC control element deexcitation CC2 and CC3;
Step 507:UE uses the auxiliary residential quarter deexcitation MAC control element of deexcitation CC2 and CC3, deexcitation CC2 and CC3, and organize all deexcitations of auxiliary residential quarter in 2 this moment, and UE thinks that CC2 and CC3 enter desynchronizing state; UE notifies its high-rise periodicity SRS resource that discharges UE such as rrc layer.
Embodiment four
Fig. 6 is the signaling process figure of the cell synchronous state-maintenance in the multi-carrier communications systems in the embodiment of the invention four, and as shown in Figure 6, what the present embodiment small area synchronous regime was safeguarded mainly may further comprise the steps:
Step 601:UE initiates RRC at CC1 and connects, in the random access procedure of CC1, receive the TA in the accidental access response message after TAT start; The base station connects information and the grouping information that configures CC2 and CC3 in the reallocation message to UE at RRC.CC1 is main Serving cell, composition group 1, and CC2 and CC3 are auxiliary serving cell, composition group 2; Group 1 TAT safeguards by CC1, and duration is 1280ms; If be in desynchronizing state after auxiliary residential quarter is activated, the base station indicates UE to initiate the uplink synchronous process in certain auxiliary residential quarter within certain period;
Wherein, this section period can be (being appointed as 10ms in the present embodiment) of agreement appointment, also can connect reallocation message by RRC and be configured to UE by the base station.
Step 602: the base station sends auxiliary residential quarter and activates the MAC control element, activates CC2 and CC3; Indicate simultaneously CC2 and CC3 to be in desynchronizing state in this control element;
Step 603: the up initial synchronization of UE initiation group 2 on CC2 is indicated in the base station in the 10ms after CC2 activates;
If UE does not receive the base station indication in the message of the up initial synchronization of CC3 initiation in 10ms, then CC3 need not to initiate the uplink synchronous process after activating.
The uplink synchronous of step 604:UE initiating random access procedure foundation group 2 on CC2, after uplink synchronous was finished, CC2 entered synchronous regime, and the CC3 in the same grouping also enters synchronous regime; UE sends SRS at CC2 and CC3;
Step 605: after a period of time, the deexcitation timer expiry of CC2, CC2 deexcitation; After CC2 deexcitation a period of time, the deexcitation timer expiry of CC3, CC3 deexcitation;
Step 606: after a period of time, the base station sends auxiliary residential quarter active control element and activates CC2 and CC3, and I2 and I3 territory all are set to 0 in this control element, and base station indication CC2 or CC3 need not to initiate uplink synchronous, and CC2 and CC3 directly enter synchronous regime after activating.
Step 607:UE receives and activates CC2 and CC3 behind the active control element of auxiliary residential quarter, according to the value of Ii in the MAC control element be 0, UE think this moment CC2 and CC3 be synchronous regime after activating.After CC2 and CC3 activation, UE sends SRS at CC2 and CC3.
Embodiment five
Fig. 7 is the signaling process figure of the cell synchronous state-maintenance in the multi-carrier communications systems in the embodiment of the invention five, and as shown in Figure 7, what the present embodiment small area synchronous regime was safeguarded mainly may further comprise the steps:
Step 701:UE initiates RRC at CC1 and connects, receive the TA in the accidental access response message in the random access procedure on CC1 after TAT start; The base station connects information and the grouping information that configures CC2 and CC3 in the reallocation message to UE at RRC.CC1 is main Serving cell, composition group 1, and CC2 and CC3 are auxiliary serving cell, composition group 2; Group 1 TAT safeguards by CC1, and duration is 1280ms; The auxiliary residential quarter deexcitation timer of base station configuration CC2 and CC3 is infinitely great.After activating, auxiliary residential quarter do not receive in certain period that the uplink synchronous command of base station thinks that then need not initiate uplink synchronous directly enters synchronous regime;
Wherein, this section period can be (being appointed as 10ms in the present embodiment) of agreement appointment, also can connect reallocation message by RRC and be configured to UE by the base station.
Step 702: the base station sends auxiliary residential quarter and activates the MAC control element, activates CC2 and CC3; This control element indicating CC2 and CC3 are in desynchronizing state, need to carry out uplink synchronous;
Step 703:UE activates CC2 and CC3 after receiving auxiliary residential quarter active control element, is 1 indication according to Ii in the control element, and UE selects the uplink synchronous of a residential quarter initiation group 2 in the CC2 in group 2 and the rear 10ms of CC3 activation in CC2 and CC3.UE is chosen in the uplink synchronous of the upper initiation group 2 of CC2 in the present embodiment; After uplink synchronous was finished, CC2 entered synchronous regime, and the CC3 in the same grouping also enters synchronous regime.UE sends SRS at CC2 and CC3;
Step 704: the base station sends the TAC of CC1 at CC1;
The TAC that the step 705:UE application CC1 time is adjusted is also restarted TAT;
Step 706: the TAC of base station transmission group 2 on CC1;
Step 707:UE receives the TAC of group 2 at CC1, use this TAC according to the identified group 2 among the TAC, and do not produce any impact to TAT this moment;
Step 708: after a period of time, CC2 and CC3 still are in state of activation, and this moment, the base station sent auxiliary residential quarter deexcitation control element deexcitation CC2 and CC3, and wherein the value of I2 and I3 is 1 in the control element, indication CC2 and CC3 step-out;
Step 709:UE uses auxiliary residential quarter deexcitation MAC control element, deexcitation CC2 and CC3; Because it is 1 that the value of I2 and I3 is set in the control element, this moment, UE thought that CC2 and CC3 are in desynchronizing state, the high-rise periodicity SRS resource such as RRC deletion CC2 and CC3 of notice behind UE deexcitation CC2 and the CC3.
Embodiment six
Fig. 8 is the signaling process figure of the cell synchronous state-maintenance in the multi-carrier communications systems in the embodiment of the invention six, and as shown in Figure 8, what the present embodiment small area synchronous regime was safeguarded mainly may further comprise the steps:
Step 801:UE initiates RRC at CC1 and connects, receive the TA in the accidental access response message in the random access procedure on CC1 after TAT start; The base station connects information and the grouping information that configures CC2 and CC3 in the reallocation message to UE at RRC.CC1 is main Serving cell, composition group 1, and CC2 and CC3 are auxiliary serving cell, composition group 2; Group 1 TAT safeguards by CC1, and duration is 1280ms; The auxiliary residential quarter deexcitation timer of base station configuration CC2 and CC3 is infinitely great; If be in desynchronizing state after auxiliary residential quarter is activated, the base station indicates UE to initiate the uplink synchronous process in certain auxiliary residential quarter within certain period;
This section period can be agreement appointment (being appointed as 10ms in the present embodiment), also can connect reallocation message by RRC and be configured to UE by the base station.
Step 802: the base station sends auxiliary residential quarter and activates the MAC control element, activates CC2 and CC3;
Step 803: the base station indicates UE to initiate up initial synchronization at CC2 after CC2 activates in the 10ms;
If UE does not receive the base station indication in the message of the up initial synchronization of CC3 initiation in 10ms, then CC3 need not to initiate the uplink synchronous process after activating.
The uplink synchronous of step 804:UE initiating random access procedure foundation group 2 on CC2, after uplink synchronous was finished, CC2 entered synchronous regime, and the CC3 in the same grouping also enters synchronous regime.UE sends SRS at CC2 and CC3;
Step 805: after a period of time, the TAT that group 1 is safeguarded is soon overtime, and this moment, CC2 and CC3 still were in state of activation; The base station sends auxiliary residential quarter deexcitation MAC control element deexcitation CC2 and CC3; Change step 806 over to.
Perhaps UE is organizing the 1 overtime rear deexcitation CC2 of TAT and the CC3 that safeguards, and the high-rise periodicity SRS resource such as rrc layer deletion CC2 and CC3 of notice, end.
Perhaps the base station sends the residential quarter deletion of RRC connection reprovision and organizes 2 information; Change step 809 over to;
Step 806:UE uses auxiliary residential quarter deexcitation control element deexcitation CC2 and CC3;
Step 807: the base station sends RRC and connects reallocation message, wherein carries the information of the periodicity SRS resource of deletion CC2 and CC3;
Step 808:UE uses RRC and connects reallocation message, the periodicity SRS resource of deletion CC2 and CC3, and UE thought and finished group 2 step-outs this moment.
Step 809:UE uses RRC and connects reallocation message, and 2 information are organized in deletion, finishes.
Embodiment seven
Fig. 9 is the signaling process figure of the cell synchronous state-maintenance in the multi-carrier communications systems in the embodiment of the invention seven, and as shown in Figure 9, what the present embodiment small area synchronous regime was safeguarded mainly may further comprise the steps:
Step 901:UE initiates RRC at CC1 and connects, in the random access procedure of CC1, receiving the TA in the accidental access response message after TAT start; The base station connects information and the grouping information that configures CC2 and CC3 in the reallocation message to UE at RRC.CC1 is main Serving cell, composition group 1, and CC2 and CC3 are auxiliary serving cell, composition group 2; Group 1 TAT safeguards by CC1, and duration is 1280ms; The auxiliary residential quarter deexcitation timer of base station configuration CC2 and CC3 is infinitely great; If be in desynchronizing state after auxiliary residential quarter is activated, the base station indicates UE to initiate the uplink synchronous process in certain auxiliary residential quarter within certain period;
Wherein, this section period can be (being appointed as 10ms in the present embodiment) of agreement appointment, also can connect reallocation message by RRC and be configured to UE by the base station.
Step 902: the base station sends auxiliary residential quarter and activates the MAC control element, activates CC2 and CC3; Indicate simultaneously CC2 and CC3 after activation, to be in desynchronizing state in this control element;
Step 903:UE activates CC2 and CC3 after receiving auxiliary residential quarter active control element, and indicate according to the Ii territory in the control element, UE can select the uplink synchronous of a residential quarter initiation group 2 among CC2 and the CC3 voluntarily in rear 10ms is activated in auxiliary residential quarter, and UE selects the uplink synchronous process of CC2 initiation group 2 in the present embodiment; After uplink synchronous was finished, CC2 entered synchronous regime, and the CC3 in the same grouping also enters synchronous regime.UE sends SRS at CC2 and CC3;
Step 904: after a period of time, the TAT that CC1 safeguards will step-out, and this moment, CC2 and CC3 still were in state of activation.The base station sends auxiliary residential quarter deexcitation control element deexcitation CC2 and CC3, and the flag bit I2 that carries in the control element and I3 are 1, indication CC2 and CC3 step-out;
Step 905:UE uses deexcitation CC2 and CC3 behind this auxiliary residential quarter deexcitation control element, and judges that CC2 and CC3 are in desynchronizing state at this moment, the high-rise periodicity SRS resource of deleting CC2 and CC3 such as rrc layer of UE notice according to I2 and I3 indicating bit.
From above description, can find out, the present invention has realized following technique effect: subscriber equipment is according to the indication of base station, carry out the uplink synchronous of the auxiliary residential quarter in the grouping that only comprises auxiliary residential quarter, and do not need by TAT safeguard to realize only to comprise residential quarter in the grouping of auxiliary residential quarter synchronously, solved and only used a TAT can't realize that all residential quarters comprise the problem that the synchronous regime of the residential quarter in the grouping that only comprises auxiliary residential quarter is safeguarded in the correlation technique, and then reached the complexity that can reduce UE, and guarantee backward compatibility.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. the cell synchronous maintaining method of a multi-carrier communications systems is characterized in that, comprising:
Subscriber equipment is according to the rule of making an appointment or according to the indication of base station, and whether the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter is in synchronous regime.
2. method according to claim 1 is characterized in that, subscriber equipment is according to the indication of base station, and whether the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter is in synchronous regime, comprising:
Described subscriber equipment receives activation or the deexcitation MAC control element that only comprises the auxiliary residential quarter in the grouping of auxiliary residential quarter from described base station described, wherein, carry the current whether synchronous indication information in auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter of indication in described activation or the deexcitation MAC control element;
Described subscriber equipment determines according to described indication information whether the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter is in synchronous regime.
3. method according to claim 2 is characterized in that, described subscriber equipment is determined according to described indication information whether auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter enters or leave synchronous regime and comprised:
The auxiliary residential quarter that the indication of described indication information is described only to be comprised in the grouping of auxiliary residential quarter is in desynchronizing state, after auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter was activated, described subscriber equipment initiatively initiated uplink synchronous or receive auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter of the indication of described base station transmission in described Preset Time to carry out initiating uplink synchronous in the situation of order of uplink synchronous in Preset Time;
Described subscriber equipment determines that described auxiliary residential quarter enters synchronous regime.
4. method according to claim 1 is characterized in that, subscriber equipment is according to the rule of making an appointment, and the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter enters or leave synchronous regime, comprising:
Described subscriber equipment according to activate or the described grouping that only comprises auxiliary residential quarter of deexcitation in auxiliary residential quarter, the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter enters or leaves synchronous regime.
5. method according to claim 4 is characterized in that, described subscriber equipment is according to the auxiliary residential quarter of activating in the described grouping that only comprises auxiliary residential quarter, and the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter enters or leave synchronous regime, comprising:
Described subscriber equipment receives the activation MAC control element that only comprises the auxiliary residential quarter in the grouping of auxiliary residential quarter from described base station described;
Described subscriber equipment determines that the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter enters synchronous regime; Perhaps, at the appointed time after, described subscriber equipment determines that the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter enters synchronous regime; Perhaps, do not receive the order of the execution uplink synchronous that described base station sends within the described fixed time, described subscriber equipment determines that the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter enters synchronous regime; Perhaps, described subscriber equipment finishes to determine to enter synchronous regime in the execution uplink synchronous.
6. method according to claim 4, it is characterized in that, described subscriber equipment is according to the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter of deexcitation, the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter enters or leaves synchronous regime, comprise: described subscriber equipment deexcitation is described only to comprise auxiliary residential quarter in the grouping of auxiliary residential quarter, determines that synchronous regime is left in the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter.
7. each described method in 6 according to claim 1, it is characterized in that, described method also comprises: described subscriber equipment initiating random access procedure on the main plot, when receiving the time adjustment TA value that comprises among the accidental access response message RAR, start or restart the time adjustment timer TAT of main plot.
8. method according to claim 7 is characterized in that, described method also comprises:
Described subscriber equipment receives the time adjustment MAC control element that comprises described main plot, restarts described TAT;
Described subscriber equipment is forbidden described TAT is carried out arbitrarily operation in described main plot or the described grouping that only comprises auxiliary residential quarter when receiving the MAC control element of adjusting for the grouping of the described auxiliary residential quarter time of carrying out.
9. method according to claim 7 is characterized in that, described method also comprises:
Described TAT at described subscriber equipment is soon overtime, auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter is activated and when being in synchronous regime, described base station sends auxiliary residential quarter deexcitation MAC control element, all auxiliary residential quarters in the described grouping that only comprises auxiliary residential quarter of indication deexcitation, wherein, carry the sign of the described auxiliary residential quarter of indication step-out in the described auxiliary residential quarter deexcitation MAC control element, described subscriber equipment is according to described auxiliary residential quarter deexcitation MAC control element, deexcitation is described only to comprise all auxiliary residential quarters in the grouping of auxiliary residential quarter and the periodicity interception reference signal SRS resource of the described auxiliary residential quarter of deletion deexcitation; Perhaps
The described TAT of described main plot is overtime, and described subscriber equipment is determined the deexcitation of auxiliary residential quarter and the step-out in the described grouping that only comprises auxiliary residential quarter, deletes the periodicity SRS resource of each the auxiliary residential quarter in this auxiliary cell group.
10. each described method in 6 according to claim 1 is characterized in that, described method also comprises:
Auxiliary residential quarter step-out in the described grouping that only comprises auxiliary residential quarter, and the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter is in state of activation, and described base station sends auxiliary residential quarter deexcitation MAC control element to described subscriber equipment;
Described subscriber equipment receives described auxiliary residential quarter deexcitation MAC control element, the described auxiliary residential quarter of deexcitation.
11. method according to claim 10 is characterized in that, after the described auxiliary residential quarter of described subscriber equipment deexcitation, described method also comprises:
Described base station sends radio resource control RRC to described subscriber equipment and connects reallocation message, deletes the periodicity interception reference signal resource of all auxiliary residential quarters in the described grouping that only comprises auxiliary residential quarter; Perhaps
Described base station sends RRC and connects reallocation message, deletes all auxiliary residential quarters in the described grouping that only comprises auxiliary residential quarter.
12. each described method in 6 is characterized in that according to claim 1, described method also comprises:
When described only comprise auxiliary residential quarters all in the grouping of auxiliary residential quarter and all be deactivated after, described subscriber equipment determines that the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter leaves synchronous regime;
Described subscriber equipment discharges the periodicity SRS resource of the auxiliary residential quarter in the described grouping that only comprises auxiliary residential quarter.
13. each described method in 6 is characterized in that according to claim 1, described method also comprises:
When only comprising all in the grouping of auxiliary residential quarter auxiliary residential quarters step-out, described base station sends auxiliary residential quarter deexcitation MAC control element to described subscriber equipment, carries the step-out indication of described auxiliary residential quarter in this auxiliary residential quarter deexcitation MAC control element when described;
Described subscriber equipment receives described auxiliary residential quarter deexcitation MAC control element, according to described step-out indication, and the described auxiliary residential quarter of deexcitation, and the periodicity SRS resource of the described auxiliary residential quarter of release step-out.
14. the cell synchronous attending device of a multi-carrier communications systems is positioned at user equipment side, it is characterized in that, comprising:
Acquisition module is used for obtaining the rule of making an appointment or the indication of base station;
Maintenance module is used for according to described rule of making an appointment or according to the indication of described base station, and whether the auxiliary residential quarter of determining only to comprise in the grouping of auxiliary residential quarter is in synchronous regime.
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| CN2011102260809A CN102932901A (en) | 2011-08-08 | 2011-08-08 | Method and device for synchronous cell maintenance of multi-carrier communication system |
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| CN106160973A (en) * | 2015-04-07 | 2016-11-23 | 上海贝尔股份有限公司 | For controlling the method and device that the data of assisted cell are transmitted |
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| CN107637116A (en) * | 2015-04-18 | 2018-01-26 | Lg 电子株式会社 | The method and its equipment of the cell index for WLAN networks are distributed for LTE WLAN paradigmatic systems |
| CN106301721A (en) * | 2015-05-15 | 2017-01-04 | 电信科学技术研究院 | LTE carrier aggregation technology is polymerized carrier activation/anti-activating method and equipment |
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