CN101282144B - Method and device for controlling transmission power and synchronization in TD-SCDMA system - Google Patents
Method and device for controlling transmission power and synchronization in TD-SCDMA system Download PDFInfo
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- CN101282144B CN101282144B CN2007100652202A CN200710065220A CN101282144B CN 101282144 B CN101282144 B CN 101282144B CN 2007100652202 A CN2007100652202 A CN 2007100652202A CN 200710065220 A CN200710065220 A CN 200710065220A CN 101282144 B CN101282144 B CN 101282144B
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Abstract
The invention provides a method for controlling downlink transmission power in a TD-SCDMA system, which comprises the following steps: NodeB receives a downlink power control command aiming at a downlink time slot; inquiring whether the NodeB sends information in corresponding downlink time slots of D1 sub-frames before the current sub-frame; if yes, enabling the NodeB to respond to the downlink power control command; where D1 is a processing delay required for the UE to generate the downlink power control command. The invention also provides a method for controlling the uplink transmission power and the synchronization in the TD-SCDMA system, and a corresponding device for controlling the downlink transmission power in the TD-SCDMA system and a device for controlling the uplink transmission power and the synchronization in the TD-SCDMA system. The method and the device can solve the problem of error adjustment caused by the response of NodeB or UE to the relevant control commands of all downlink or uplink time slots distributed by RNC.
Description
Technical field
The present invention relates to the technical field that TD SDMA inserts message transmission control in (TD-SCDMA) system, relate in particular to the method and the device that carry out through-put power control and Synchronization Control in a kind of TD-SCDMA system.
Background technology
In the TD-SCDMA system, when subscriber equipment (UE) and network side connected, base station controller (RNC) can be that UE distributes the required resource of up-downgoing transmission.In each subframe, base station (NodeB) will send uplink power control (ULTPC) order and uplink synchronous (SS) order to UE then.UE will adjust its uplink transmission power according to the uplink power control order that NodeB sends, and according to the uplink synchronous order that NodeB sends the Timing Advance of information transmission adjusted.In each subframe, UE also can send descending power control command (DL TPC) to NodeB, and NodeB will adjust its downlink transmission power according to the descending power control command that UE sends.
According to the size of traffic carrying capacity, RNC possible configuration UE sends at a plurality of ascending time slots (time slot TS1, TS2 as shown in fig. 1), or configuration NodeB sends to this UE at a plurality of descending time slots (time slot TS4, TS5, TS6 as shown in fig. 1).At this moment; NodeB can send uplink power control order and uplink synchronous order; UE is carried out independent adjustment at the transmitted power and the Timing Advance of each ascending time slot, and same UE can send the descending power control command, and NodeB is carried out independent adjustment in the transmitted power of each descending time slot.
If the data volume that UE sends in a period of time seldom, UE will preferentially use time slot forward in a plurality of ascending time slots that distributed to send information, and not send information at subsequent timeslot.For example, distributed ascending time slot TS1, TS2, but only sent information at time slot TS1.For time slot TS2, NodeB can think the information that UE sends with noise by mistake like this, thus order of the uplink power control of generation error and uplink synchronous order.UE receives uplink power control order and the uplink synchronous order that NodeB sends, although this UE does not send information at time slot TS2, this UE still responds pairing uplink power control order of time slot TS2 and uplink synchronous order, and correspondingly adjusts.Like this, will cause UE to carry out wrong adjustment at next time slot TS2.
In like manner, the data volume of sending as NodeB is seldom the time, and NodeB can preferentially use time slot forward in a plurality of descending time slots that distributed to send information, and does not send information at subsequent timeslot.For example, distributed descending time slot TS4, TS5, TS6, but only sent information at time slot TS4 and TS5.Like this, for time slot TS6, UE can think the information that NodeB sends with noise by mistake, thus the descending power control command of generation error.NoedB receives the descending power control command that UE sends, although this NodeB does not send information at time slot TS6, NodeB still responds the pairing descending power control command of time slot TS6, and correspondingly adjusts.Like this, will cause NodeB downlink transmission power to be adjusted by error at next time slot TS6.
Can find out through above-mentioned analysis, in the prior art, because the relevant control command of all downlink or uplink time slots that NodeB or UE response RNC distribute, therefore, the adjustment that possibly lead to errors sometimes.At present, also there is not a kind of clear and definite way to address this problem.
Summary of the invention
In view of this; The technical problem that the present invention solves provides method and the device that carries out through-put power control and Synchronization Control in a kind of TD-SCDMA system, to solve because the problem that the relevant control command of all downlink or uplink time slots of NodeB or UE response RNC distribution leads to errors and adjusts.
For this reason, the technical scheme of the present invention's proposition is following:
Carry out the method for downlink transmission power control in a kind of TD-SCDMA system, comprising:
A, NodeB receive the descending power control command to descending time slot;
Whether B, inquiry NodeB sent information at the corresponding descending time slot of the preceding D1 sub-frame of current subframe; If, then
C1, make NodeB respond said descending power control command;
Wherein, D1 is that user equipment (UE) generates the needed processing delay of descending power control command.
Wherein, further comprise:
If NodeB did not send information at the corresponding descending time slot of the preceding D1 sub-frame of current subframe, then
C2, make NodeB not respond said descending power control command.
Wherein, further comprise:
Between steps A, B, judge that whether the corresponding downstream time slot is first descending time slot that RNC distributes in the current subframe, if, execution in step C1 then; Otherwise, execution in step B.
Wherein, further comprise:
If NodeB did not send information at the corresponding descending time slot of the preceding D1 sub-frame of current subframe, then
C3, the pairing descending power control command of first descending time slot of distributing with RNC in the current subframe make NodeB respond said descending power control command as the descending power control command of said corresponding descending time slot.
Carry out the method for uplink transmit power control and Synchronization Control in a kind of TD-SCDMA system, comprising:
A, user equipment (UE) are received to the uplink power control order of ascending time slot and uplink synchronous order;
Whether B, inquiry UE sent information at the corresponding ascending time slot of the preceding D2 sub-frame of current subframe; If, then
C1, make UE respond order of said uplink power control and uplink synchronous order;
Wherein, D2 is that base station NodeB generates the uplink power control order and uplink synchronous is ordered needed processing delay.
Wherein, further comprise:
If UE did not send information at the corresponding ascending time slot of the preceding D2 sub-frame of current subframe, then
C2, make UE not respond order of said uplink power control and uplink synchronous order.
Wherein, further comprise:
Between steps A, B, judge that whether corresponding ascending time slot is first ascending time slot that RNC distributes in the current subframe, if, execution in step C1 then; Otherwise, execution in step B.
Wherein, further comprise:
If UE did not send information at the corresponding ascending time slot of the preceding D2 sub-frame of current subframe, then
C3, the pairing uplink power control order of first ascending time slot that distributes with RNC in the current subframe and uplink synchronous order make UE respond said uplink power control order and order with uplink synchronous as the uplink power control order and the uplink synchronous order of said corresponding ascending time slot.
The device that carries out downlink transmission power control in a kind of TD-SCDMA system that the present invention proposes comprises:
Query unit is used for receiving at NodeB to after the descending power control command of descending time slot, whether inquiry NodeB sent information at the corresponding descending time slot of the preceding D1 sub-frame of current subframe;
First response unit, be used for when NodeB when the corresponding descending time slot of the preceding D1 sub-frame of current subframe sent information, the notice NodeB respond said descending power control command;
Wherein, D1 is that user equipment (UE) generates the needed processing delay of descending power control command.
Wherein, further comprise:
Second response unit, be used for when NodeB when the corresponding descending time slot of the preceding D1 sub-frame of current subframe did not send information, the notice NodeB do not respond said descending power control command.
Wherein, further comprise:
Judging unit; Be used for when NodeB receives the descending power control command that is directed against descending time slot, judge whether the corresponding downstream time slot is first descending time slot that RNC distributes in the current subframe, if; Then start first response unit, notice NodeB responds said descending power control command; Otherwise, start query unit.
Wherein, further comprise:
The 3rd response unit; Be used for when NodeB when the corresponding descending time slot of the preceding D1 sub-frame of current subframe did not send information; The pairing descending power control command of first descending time slot of distributing with RNC in the current subframe is as the descending power control command of said corresponding descending time slot, and notice NodeB responds said descending power control command.
Carry out the device of uplink transmit power control and Synchronization Control in a kind of TD-SCDMA system, comprising:
Query unit is used for after user equipment (UE) is received the uplink power control order and uplink synchronous order to ascending time slot, and whether inquiry UE sent information at the corresponding ascending time slot of the preceding D2 sub-frame of current subframe;
First response unit, be used for when UE when the corresponding ascending time slot of the preceding D2 sub-frame of current subframe sent information, notice UE responds the order of said uplink power control and orders with uplink synchronous;
Wherein, D2 is that base station NodeB generates the uplink power control order and uplink synchronous is ordered needed processing delay.
Wherein, further comprise:
Second response unit, be used for when UE when the corresponding ascending time slot of the preceding D2 sub-frame of current subframe did not send information, notice UE does not respond the order of said uplink power control and orders with uplink synchronous.
Wherein, further comprise:
Judging unit; Be used for receiving when ordering with uplink synchronous to the order of the uplink power control of ascending time slot at UE; Judge whether corresponding ascending time slot is first ascending time slot that RNC distributes in the current subframe; If, then starting first response unit, notice NodeB responds said descending power control command; Otherwise, start query unit.
Wherein, further comprise:
The 3rd response unit; Be used for when UE when the corresponding ascending time slot of the preceding D2 sub-frame of current subframe did not send information; Pairing uplink power control order of first ascending time slot and uplink synchronous order so that RNC in the current subframe distributes are ordered as the uplink power control order and the uplink synchronous of said corresponding ascending time slot, and notice UE responds said uplink power control order and uplink synchronous order.
Can find out; Adopt method provided by the invention and device; NodeB need not the pairing descending power control command of each descending time slot that RNC distributes is all responded, but through inquiry, confirms that it sent the time slot of information; And only its pairing descending power control command of time slot of sending information is responded, thereby the power control command that has solved owing to all descending time slots of NodeB response RNC configuration causes NodeB its transmitted power to be carried out the problem of wrong adjustment.In like manner; Pairing uplink power control order of each ascending time slot and uplink synchronous order that UE also no longer distributes RNC all respond; But through inquiry; Confirm that it sent the time slot of information, and only its pairing uplink power control order of time slot and uplink synchronous order of sending information is responded, thereby the power control command and the synch command that have solved owing to all ascending time slots of UE response RNC configuration cause UE its transmitted power to be carried out the problem of wrong adjustment.
Description of drawings
Fig. 1 is the structural representation of wireless sub-frame in the TD-SCDMA system;
Fig. 2 is the flow chart of the inventive method embodiment 1;
Fig. 3 is the sketch map of embodiment of the present invention method;
Fig. 4 is the flow chart of the inventive method embodiment 2;
Fig. 5 is the flow chart of the inventive method embodiment 3;
Fig. 6 is the flow chart of the inventive method embodiment 4;
Fig. 7 is first schematic representation of apparatus of the present invention;
Fig. 8 is second schematic representation of apparatus of the present invention;
Fig. 9 is the 3rd schematic representation of apparatus of the present invention;
Figure 10 is the 4th schematic representation of apparatus of the present invention.
Embodiment
At first need to prove, when upstream or downstream have no data volume in a period of time, can start the discontinuous transmission of corresponding upstream or downstream (DTX) process, this 3GPP agreement has been stipulated corresponding power control and synchronisation control means.And the present invention describes is that upstream or downstream have data volume, but when being not enough to occupy the upstream or downstream time slot of all distribution, for the power control and the synchronisation control means that do not have section data upstream or downstream time slot to be carried out.Both belong to different processes.
Below, the method that proposes in conjunction with the 1 couple of the present invention of embodiment is done further and is specified, and Fig. 2 is the flow chart of this method.Carry out the method for downlink transmission power control in a kind of TD-SCDMA system, comprising:
In step 201, NodeB receives the descending power control command to certain descending time slot that UE sends in current subframe.
In step 202, whether its this descending time slot in the preceding D1 sub-frame of current subframe of NodeB inquiry sent information to this UE, if then execution in step 203, otherwise, execution in step 204.
D1 is that UE generates the needed processing delay of descending power control command here, is that unit calculates with the subframe.UE just can send the corresponding downstream power control commands at subframe n after subframe (n-D1) is received the downlink information that NodeB sends.Therefore, when NodeB subframe n receive that UE sends to the descending power control command of certain descending time slot the time, will inquire about its this descending time slot and whether send information to this UE in subframe (n-D1).According to estimation to the UE disposal ability, general D1=2, i.e. the loop time delay of downlink transmission power control is two sub-frame.
If NodeB sent information at this descending time slot of preceding D1 sub-frame to this UE, then in step 203, NodeB responds said descending power control command;
If NodeB did not send information to this UE at this descending time slot of preceding D1 sub-frame, then in step 204, NodeB does not respond said descending power control command.
Below in conjunction with Fig. 3; In particular; Suppose that NodeB receives the descending power control command to time slot TS5 that UEUE sends at subframe n+1, and the processing delay D1=2 of UE, then whether its time slot TS5 at subframe n-1 of NodeB inquiry sent information to UEUE.If NodeB sent information at the time slot TS5 of subframe n-1 to UEUE, then NodeB responds its descending power control command to time slot TS5 of receiving at subframe n+1; If NodeB did not send information to UE at the time slot TS5 of subframe n-1, then NodeB does not respond this descending power control command.
Can find out through embodiment 1 described method; Adopt this method, NodeB need not the pairing descending power control command of each descending time slot is all responded, but through inquiry; Confirm that it sent the time slot of information; Then, only its pairing descending power control command of time slot of sending information is responded, and other descending power control commands are used as the engineering noise order; Will not respond, thereby the power control command that has solved owing to all descending time slots of NodeB response RNC configuration causes NodeB its transmitted power to be carried out the problem of wrong adjustment.
In embodiment 1 described method, NodeB does not respond it when receiving engineering noise descending power control command, does not promptly adjust the downlink transmission power of corresponding time slot.The scene that another kind of solution moves with better adaptation UE is proposed below.
Because NodeB can preferentially use the descending time slot of front to send downlink information when data volume was few; That is to say; First descending time slot that is assigned with can be used to transmission information all the time, and NodeB also can respond the pairing descending power control command of this descending time slot all the time.NodeB is when receiving the pairing descending power control command of follow-up descending time slot; If do not inquire in the corresponding time slot of preceding D1 sub-frame and sent information, the descending power control command that then NodeB can first descending time slot that is assigned with is as the descending power control command of this time slot.Below, doing further to specify in conjunction with 2 pairs of these methods of embodiment, Fig. 4 is the flow chart of this method.
In step 401, NodeB receives the descending power control command to certain descending time slot that UE sends in current subframe.
In step 402, NodeB judges whether said descending time slot is first descending time slot that RNC distributes in the current subframe.If then execution in step 404, otherwise execution in step 403.
In step 403, whether its said descending time slot in preceding D1 sub-frame of NodeB inquiry sent information to this UE, if then execution in step 404, otherwise, execution in step 405.
In step 404, NodeB responds said descending power control command.
In step 405, the descending power control command of first descending time slot that NodeB distributes with RNC in the current subframe is as the descending power control command of said time slot, and responds this descending power control command.
Below in conjunction with Fig. 3, in particular, suppose that NodeB receives the descending power control command to time slot TS5 that UE sends at subframe n+1, and the response delay D1=2 of UE, then NodeB judges at first whether time slot TS5 is first descending time slot that RNC distributes.If time slot TS5 is RNC is first descending time slot that UE distributes, and NodeB will no longer inquire about its time slot TS5 at subframe n-1 and whether send information, and directly respond said descending power control command.If time slot TS5 is not RNC is first descending time slot that UE distributes, and supposes that TS4 is first descending time slot, and then NodeB also need inquire about its time slot TS5 at subframe n-1 and whether send information to UE.If NodeB sent information at the time slot TS5 of subframe n-1 to UE, then NodeB responds its descending power control command to time slot TS5 of receiving at subframe n+1; If NodeB did not send information to UE at the time slot TS5 of subframe n-1; Then NodeB with its subframe n+1 receive to the descending power control command of time slot TS4 descending power control command as time slot TS5; And respond this descending power control command, promptly NodeB can do identical adjustment to the power of TS4 and TS5.
Can find out through embodiment 2 described methods, when NodeB inquired it when certain descending time slot sent information to certain UE, will be in the pairing descending power control command of D1 subframe this descending time slot of response thereafter; When NodeB inquires it at certain descending time slot (except first descending time slot) when not sending information, will use the pairing descending power control command of first descending time slot that this UE distributes descending power control command in D1 subframe thereafter as this descending time slot.Like this, when data were recovered to send on this time slot afterwards, total energy was used proper downlink transmission power.
Embodiment 1 is the method for in the TD-SCDMA system, carrying out downlink transmission power control with embodiment 2 described methods; Below in conjunction with embodiment 3; The method of in the TD-SCDMA system, carrying out uplink transmit power control and Synchronization Control done further specifying, Fig. 5 is the flow chart of this method.
In step 501, UE receives uplink power control order and the uplink synchronous order to certain ascending time slot that NodeB sends in current subframe.
In step 502, whether its this ascending time slot in the preceding D2 sub-frame of current subframe of UE inquiry sent information to NodeB, if then execution in step 503, otherwise, execution in step 504.
D2 is that NodeB generates the uplink power control order and uplink synchronous is ordered needed processing delay here, is that unit calculates with the subframe.NodeB just can send corresponding uplink power control order and synch command at subframe n after subframe (n-D2) is received the uplink information that UE sends.Therefore, when UE when subframe n receives that the uplink power control order to certain ascending time slot that NodeB sends is ordered with uplink synchronous, will inquire about its this ascending time slot and whether send information to NodeB in subframe (n-D2).According to estimation to the NodeB disposal ability, general D2=1, promptly the loop time delay of upload control is a sub-frame.
If UE sent information at this ascending time slot of preceding D2 sub-frame to NodeB, then in step 503, UE responds said uplink power control order and uplink synchronous order;
If UE did not send information to NodeB at this ascending time slot of preceding D2 sub-frame, then in step 504, UE does not respond said uplink power control order and uplink synchronous order.
Below in conjunction with Fig. 3; In particular; Suppose that UE receives uplink power control order and the uplink synchronous order to time slot TS2 that NodeB sends at subframe n+1, and the processing delay D2=1 of NodeB, then whether its time slot TS2 at subframe n of UE inquiry sent information to NodeB.If UE sent information at the time slot TS2 of subframe n to NodeB, then its uplink power control order and uplink synchronous order to time slot TS2 of receiving of UE response at subframe n+1; If UE did not send information to NodeB at the time slot TS2 of subframe n, then UE does not respond this uplink power control order and uplink synchronous order.
Can find out through embodiment 3 described methods; Adopt this method, UE need not pairing uplink power control order of each ascending time slot and uplink synchronous order are all responded, but through inquiry; Confirm that it sent the time slot of information; Then, only its pairing uplink power control order of time slot and uplink synchronous order of sending information is responded, and the engineering noise order is used as in other orders; Will not respond, thereby the power control command and the synch command that have solved owing to all ascending time slots of UE response RNC configuration cause UE its transmitted power and Timing Advance to be carried out the problem of wrong adjustment.
In embodiment 3 described methods, UE does not respond it when receiving order of engineering noise uplink power control and synchronous control command, does not promptly adjust the uplink transmission power and the Timing Advance of corresponding time slot.The scene that another kind of solution moves with better adaptation UE has been proposed below.
Because UE can preferentially use the ascending time slot of front to send uplink information when data volume was few; That is to say; First ascending time slot that is assigned with can be used to transmission information all the time, and UE also can respond pairing uplink power control order of this ascending time slot and uplink synchronous order all the time.UE is when receiving pairing uplink power control order of follow-up ascending time slot and uplink synchronous order; If inquire in the corresponding time slot of preceding D2 sub-frame and do not send information, the uplink power control order that then UE can first ascending time slot that is assigned with is ordered as the uplink power control order and the uplink synchronous of this corresponding time slot with the uplink synchronous order.Below, doing further to specify in conjunction with 4 pairs of these methods of embodiment, Fig. 6 is the flow chart of this method.
In step 601, UE receives uplink power control order and the uplink synchronous order to certain ascending time slot that NodeB sends in current subframe.
In step 602, UE judges whether said ascending time slot is first ascending time slot that RNC distributes in the current subframe.If then execution in step 604, otherwise execution in step 603.
In step 603, whether its said ascending time slot in preceding D2 sub-frame of UE inquiry sent information to NodeB, if then execution in step 604, otherwise, execution in step 605.
In step 604, UE responds said uplink power control order and uplink synchronous order.
In step 605; UE orders as the uplink power control order and the uplink synchronous of said time slot with the uplink power control order and the uplink synchronous order of first ascending time slot that RNC in the current subframe distributes, and responds this uplink power control order and uplink synchronous order.
Below in conjunction with Fig. 3; In particular; Suppose that UE receives uplink power control order and the uplink synchronous order to time slot TS2 that NodeB sends at subframe n+1, and the response delay D2=1 of NodeB, then UE judges at first whether time slot TS2 is first ascending time slot that RNC distributes.If time slot TS2 is RNC is first ascending time slot that UE distributes, and UE will no longer inquire about its time slot TS2 at subframe n and whether send information, and directly responds said uplink power control order and uplink synchronous order.If time slot TS2 is not RNC is first ascending time slot that UE distributes, and supposes that TS1 is first ascending time slot, and then UE also need inquire about its time slot TS2 at subframe n and whether send information to NodeB.If UE sent information at the time slot TS2 of subframe n to NodeB, then its uplink power control order and uplink synchronous order to time slot TS2 of receiving of UE response at subframe n+1; If UE did not send information to NodeB at the time slot TS2 of subframe n; Then UE orders as uplink power control order and the uplink synchronous of time slot TS2 in uplink power control order and uplink synchronous order to time slot TS1 that subframe n+1 receives with it; And respond this uplink power control order and uplink synchronous order, promptly UE can do identical adjustment to the power of TS1 and TS2.
Can find out through embodiment 4 described methods,, will order in pairing uplink power control order of this ascending time slot of D2 subframe response thereafter and uplink synchronous when UE inquired it when certain ascending time slot sent information; When inquiring it, UE when not sending information, will order as the uplink power control order and the uplink synchronous of this ascending time slot in pairing uplink power control order of first ascending time slot that this UE of D2 subframe use thereafter distributes and uplink synchronous order at certain ascending time slot (except first ascending time slot).Like this, when data were recovered to send on this time slot afterwards, total energy was used proper uplink transmission power and Timing Advance.
Based on said method, the present invention also proposes in the TD-SCDMA system, to carry out accordingly the device of downlink transmission power control, and the device that in the TD-SCDMA system, carries out uplink transmit power control and Synchronization Control.Below in conjunction with specific embodiment each device is specified respectively.
Fig. 7 is the schematic representation of apparatus of carrying out downlink transmission power control in a kind of TD-SCDMA system, and this device comprises the query unit 71 and first response unit 72, also comprises second response unit 73.
NodeB receives to after the descending power control command of certain descending time slot, utilizes query unit 71 can inquire about NodeB and whether sent information at this descending time slot of the preceding D1 sub-frame of current subframe.
If NodeB sent information at the said descending time slot of the preceding D1 sub-frame of current subframe, then first response unit 72 will notify NodeB to respond said descending power control command; Otherwise second response unit 73 will notify NodeB not respond said descending power control command.
Wherein, D1 is that UE generates the needed processing delay of descending power control command, and D1 is that unit calculates with the subframe.
In device shown in Figure 7, when NodeB receives engineering noise descending power control command, it is not responded, promptly do not adjust the downlink transmission power of corresponding time slot.The scene that provides another kind of solution to move below with better adaptation UE.
Because NodeB can preferentially use the descending time slot of front to send downlink information when data volume was few; That is to say; First descending time slot that is assigned with can be used to transmission information all the time, and NodeB also can respond the pairing descending power control command of this descending time slot all the time.NodeB is when receiving the pairing descending power control command of follow-up descending time slot; If do not inquire in the corresponding time slot of preceding D1 sub-frame and sent information, the descending power control command that then NodeB can first descending time slot that is assigned with is as the descending power control command of this time slot.Below, in conjunction with Fig. 8 the device of realizing this method is done further to specify.
Compare with device shown in Figure 7, in device shown in Figure 8, increased judging unit 81, and replaced second response unit 73 with the 3rd response unit 82.
When NodeB receives the descending power control command that is directed against certain descending time slot, at first utilize judging unit 81 to judge whether this descending time slot is first descending time slot that RNC distributes in the current subframe, if then start first response unit 72; Otherwise, start query unit 71.
If said descending time slot is not first descending time slot that RNC distributes in the current subframe; And NodeB did not send information at the said descending time slot of the preceding D1 sub-frame of current subframe; Then the pairing descending power control command of first descending time slot that will distribute with RNC in the current subframe of the 3rd response unit 82 is as the descending power control command of said descending time slot, and notice NodeB responds said descending power control command.
Can find out through device shown in Figure 8, when inquiring NodeB when certain descending time slot sent information to certain UE, will be in the pairing descending power control command of D1 subframe this descending time slot of response thereafter; When inquiring NodeB at certain descending time slot (except first descending time slot) when not sending information, will use the pairing descending power control command of first descending time slot that this UE distributes descending power control command in D1 subframe thereafter as this descending time slot.Like this, when data were recovered to send on this time slot afterwards, total energy was used proper downlink transmission power.
Fig. 7 and device shown in Figure 8 all are the devices that in the TD-SCDMA system, carries out downlink transmission power control, below in conjunction with Fig. 9, the device that in the TD-SCDMA system, carries out uplink transmit power control and Synchronization Control are done further specifying.
Device shown in Figure 9 comprises the query unit 91 and first response unit 92, also comprises second response unit 93.
After UE receives the uplink power control order and uplink synchronous order to certain ascending time slot, utilize query unit 91 can inquire about UE and whether sent information at this ascending time slot of the preceding D2 sub-frame of current subframe;
If UE sent information at the said ascending time slot of the preceding D2 sub-frame of current subframe, then first response unit 92 will notify UE to respond said uplink power control order and uplink synchronous order;
If UE did not send information at the said ascending time slot of the preceding D2 sub-frame of current subframe, then second response unit 93 will notify UE not respond said uplink power control order and uplink synchronous order.
Wherein, D2 is that base station NodeB generates the uplink power control order and uplink synchronous is ordered needed processing delay, and D2 is that unit calculates with the subframe.
In device shown in Figure 9, UE does not respond it when receiving order of engineering noise uplink power control and synchronous control command, does not promptly adjust the uplink transmission power and the Timing Advance of corresponding time slot.The scene that another kind of solution moves with better adaptation UE has been proposed below.
Because UE can preferentially use the ascending time slot of front to send uplink information when data volume was few; That is to say; First ascending time slot that is assigned with can be used to transmission information all the time, and UE also can respond pairing uplink power control order of this ascending time slot and uplink synchronous order all the time.UE is when receiving pairing uplink power control order of follow-up ascending time slot and uplink synchronous order; If inquire in the corresponding time slot of preceding D2 sub-frame and do not send information, the uplink power control order that then UE can first ascending time slot that is assigned with is ordered as the uplink power control order and the uplink synchronous of this corresponding time slot with the uplink synchronous order.Below, in conjunction with Figure 10 the device of realizing this method is done further to specify.
Compare with device shown in Figure 9, in device shown in Figure 10, increased judging unit 101, and replaced second response unit 93 with the 3rd response unit 102.
Receive when ordering with uplink synchronous at UE to the order of the uplink power control of certain ascending time slot; At first utilize judging unit 101 to judge whether this ascending time slot is first ascending time slot that RNC distributes in the current subframe; If then start first response unit 92; Otherwise, start query unit 91.
If said ascending time slot is not first ascending time slot that RNC distributes in the current subframe; And UE did not send information at the said ascending time slot of the preceding D2 sub-frame of current subframe; Then the 3rd response unit will be ordered as the uplink power control order and the uplink synchronous of said ascending time slot with pairing uplink power control order of first ascending time slot that RNC in the current subframe distributes and uplink synchronous order, and notice UE responds said uplink power control order and uplink synchronous order.
Can find out through device shown in Figure 10, when inquiring UE when certain ascending time slot sent information, will be in pairing uplink power control order of this ascending time slot of D2 subframe response thereafter and uplink synchronous order; When not sending information, will order as the uplink power control order and the uplink synchronous of this ascending time slot at certain ascending time slot (except first ascending time slot) when inquiring UE in pairing uplink power control order of first ascending time slot that this UE of D2 subframe use thereafter distributes and uplink synchronous order.Like this, when data were recovered to send on this time slot afterwards, total energy was used proper uplink transmission power and Timing Advance.
Can find out; Adopt method provided by the invention and device; NodeB need not the pairing descending power control command of each descending time slot that RNC distributes is all responded, but through inquiry, confirms that it sent the time slot of information; And only its pairing descending power control command of time slot of sending information is responded, thereby the power control command that has solved owing to all descending time slots of NodeB response RNC configuration causes NodeB its transmitted power to be carried out the problem of wrong adjustment.In like manner; Pairing uplink power control order of each ascending time slot and uplink synchronous order that UE also no longer distributes RNC all respond; But through inquiry; Confirm that it sent the time slot of information, and only its pairing uplink power control order of time slot and uplink synchronous order of sending information is responded, thereby the power control command and the synch command that have solved owing to all ascending time slots of UE response RNC configuration cause UE its transmitted power to be carried out the problem of wrong adjustment.
Above-described embodiment is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1. carry out the method that downlink transmission power is controlled in a TD-SCDMA system, it is characterized in that, comprising:
A, NodeB receive the descending power control command to descending time slot;
Whether B, inquiry NodeB sent information at the corresponding descending time slot of the preceding D1 sub-frame of current subframe; If, then
C1, make NodeB respond said descending power control command;
Wherein, D1 is that user equipment (UE) generates the needed processing delay of descending power control command.
2. downlink transmission power control method as claimed in claim 1 is characterized in that, further comprises:
If NodeB did not send information at the corresponding descending time slot of the preceding D1 sub-frame of current subframe, then
C2, make NodeB not respond said descending power control command.
3. downlink transmission power control method as claimed in claim 1 is characterized in that, further comprises:
Between steps A, B, judge that whether the corresponding downstream time slot is first descending time slot that RNC distributes in the current subframe, if, execution in step C1 then; Otherwise, execution in step B.
4. downlink transmission power control method as claimed in claim 3 is characterized in that, further comprises:
If NodeB did not send information at the corresponding descending time slot of the preceding D1 sub-frame of current subframe, then
C3, the pairing descending power control command of first descending time slot of distributing with RNC in the current subframe make NodeB respond said descending power control command as the descending power control command of said corresponding descending time slot.
5. carry out the method for uplink transmit power control and Synchronization Control in the TD-SCDMA system, it is characterized in that, comprising:
A, user equipment (UE) are received to the uplink power control order of ascending time slot and uplink synchronous order;
Whether B, inquiry UE sent information at the corresponding ascending time slot of the preceding D2 sub-frame of current subframe; If, then
C1, make UE respond order of said uplink power control and uplink synchronous order;
Wherein, D2 is that base station NodeB generates the uplink power control order and uplink synchronous is ordered needed processing delay.
6. uplink transmit power control as claimed in claim 5 and synchronisation control means is characterized in that, further comprise:
If UE did not send information at the corresponding ascending time slot of the preceding D2 sub-frame of current subframe, then
C2, make UE not respond order of said uplink power control and uplink synchronous order.
7. uplink transmit power control as claimed in claim 5 and synchronisation control means is characterized in that, further comprise:
Between steps A, B, judge that whether corresponding ascending time slot is first ascending time slot that RNC distributes in the current subframe, if, execution in step C1 then; Otherwise, execution in step B.
8. uplink transmit power control as claimed in claim 7 and synchronisation control means is characterized in that, further comprise:
If UE did not send information at the corresponding ascending time slot of the preceding D2 sub-frame of current subframe, then
C3, the pairing uplink power control order of first ascending time slot that distributes with RNC in the current subframe and uplink synchronous order make UE respond said uplink power control order and order with uplink synchronous as the uplink power control order and the uplink synchronous order of said corresponding ascending time slot.
9. carry out the device that downlink transmission power is controlled in a TD-SCDMA system, it is characterized in that, comprising:
Query unit is used for receiving at NodeB to after the descending power control command of descending time slot, whether inquiry NodeB sent information at the corresponding descending time slot of the preceding D1 sub-frame of current subframe;
First response unit, be used for when NodeB when the corresponding descending time slot of the preceding D1 sub-frame of current subframe sent information, the notice NodeB respond said descending power control command;
Wherein, D1 is that user equipment (UE) generates the needed processing delay of descending power control command.
10. downlink transmission power control device as claimed in claim 9 is characterized in that, further comprises:
Second response unit, be used for when NodeB when the corresponding descending time slot of the preceding D1 sub-frame of current subframe did not send information, the notice NodeB do not respond said descending power control command.
11. downlink transmission power control device as claimed in claim 9 is characterized in that, further comprises:
Judging unit; Be used for when NodeB receives the descending power control command that is directed against descending time slot, judge whether the corresponding downstream time slot is first descending time slot that RNC distributes in the current subframe, if; Then start first response unit, notice NodeB responds said descending power control command; Otherwise, start query unit.
12. downlink transmission power control device as claimed in claim 11 is characterized in that, further comprises:
The 3rd response unit; Be used for when NodeB when the corresponding descending time slot of the preceding D1 sub-frame of current subframe did not send information; The pairing descending power control command of first descending time slot of distributing with RNC in the current subframe is as the descending power control command of said corresponding descending time slot, and notice NodeB responds said descending power control command.
13. carry out the device of uplink transmit power control and Synchronization Control in the TD-SCDMA system, it is characterized in that, comprising:
Query unit is used for after user equipment (UE) is received the uplink power control order and uplink synchronous order to ascending time slot, and whether inquiry UE sent information at the corresponding ascending time slot of the preceding D2 sub-frame of current subframe;
First response unit, be used for when UE when the corresponding ascending time slot of the preceding D2 sub-frame of current subframe sent information, notice UE responds the order of said uplink power control and orders with uplink synchronous;
Wherein, D2 is that base station NodeB generates the uplink power control order and uplink synchronous is ordered needed processing delay.
14. uplink transmit power control as claimed in claim 13 and sync control device is characterized in that, further comprise:
Second response unit, be used for when UE when the corresponding ascending time slot of the preceding D2 sub-frame of current subframe did not send information, notice UE does not respond the order of said uplink power control and orders with uplink synchronous.
15. uplink transmit power control as claimed in claim 13 and sync control device is characterized in that, further comprise:
Judging unit; Be used for receiving when ordering with uplink synchronous to the order of the uplink power control of ascending time slot at UE; Judge whether corresponding ascending time slot is first ascending time slot that RNC distributes in the current subframe; If, then starting first response unit, notice UE responds said uplink power control order and uplink synchronous order; Otherwise, start query unit.
16. uplink transmit power control as claimed in claim 15 and sync control device is characterized in that, further comprise:
The 3rd response unit; Be used for when UE when the corresponding ascending time slot of the preceding D2 sub-frame of current subframe did not send information; Pairing uplink power control order of first ascending time slot and uplink synchronous order so that RNC in the current subframe distributes are ordered as the uplink power control order and the uplink synchronous of said corresponding ascending time slot, and notice UE responds said uplink power control order and uplink synchronous order.
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| CN2007100652202A CN101282144B (en) | 2007-04-06 | 2007-04-06 | Method and device for controlling transmission power and synchronization in TD-SCDMA system |
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| CN2007100652202A CN101282144B (en) | 2007-04-06 | 2007-04-06 | Method and device for controlling transmission power and synchronization in TD-SCDMA system |
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| CN101282144B true CN101282144B (en) | 2012-04-25 |
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| CN102149181B (en) * | 2010-02-08 | 2013-11-06 | 鼎桥通信技术有限公司 | Method and NodeB equipment for generating uplink invalid power control command word |
| CN103428839B (en) * | 2013-08-08 | 2017-03-01 | 大唐移动通信设备有限公司 | A kind of processing method and processing device of TPC command word |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000048336A1 (en) * | 1999-02-13 | 2000-08-17 | Samsung Electronics Co., Ltd. | Device and method of continuous outer-loop power control in dtx mode for cdma mobile communication system |
| CN1767410A (en) * | 2005-11-25 | 2006-05-03 | 凯明信息科技股份有限公司 | Discontinuous transmitting state power control method in TD-SCDMA system |
| CN1829116A (en) * | 2006-04-11 | 2006-09-06 | 中兴通讯股份有限公司 | Downlink transmitting and diversity method for supporting uplink discontinuous transmitting wireless system |
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2007
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000048336A1 (en) * | 1999-02-13 | 2000-08-17 | Samsung Electronics Co., Ltd. | Device and method of continuous outer-loop power control in dtx mode for cdma mobile communication system |
| CN1767410A (en) * | 2005-11-25 | 2006-05-03 | 凯明信息科技股份有限公司 | Discontinuous transmitting state power control method in TD-SCDMA system |
| CN1829116A (en) * | 2006-04-11 | 2006-09-06 | 中兴通讯股份有限公司 | Downlink transmitting and diversity method for supporting uplink discontinuous transmitting wireless system |
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