CN101404528A - Ascending power control method - Google Patents
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Abstract
The embodiment of the invention discloses an uplink power control method which comprises: a network side redistributes code resources for a user device UE when the service type of the UE is changed. The method also comprises; when the uplink code resources before and after redistribution belong to the same carrier frequency and the same timeslot and when the UE before and after redistribution is arranged in the same area, the network side estimates the power excursion value caused by redistributing the uplink code resources and the changing of the service types and transmits the estimated power excursion value to the UE; the UE adds the power excursion value on the current emission power value and takes the obtained result as an initial power value for carrying out uplink closed loop power control. The method can be applied to leading the UE not to enter uplink open loop power control when the service changes, thereby improving the precision of the uplink power control.
Description
Technical field
The power control techniques field that the present invention relates to communicate by letter relates in particular to a kind of ascending power control method.
Background technology
Power control is one of key technology of communication system realization resource allocation and interference management, is divided into the control of uplink power control and descending power.Wherein, effectively ascending power control method can reduce the transmitting power of user terminal (UE) under the prerequisite that satisfies the user communication quality requirement, thereby reduces the interference between each UE, the stand-by time that prolongs UE, increase capability of communication system.
At present, in the TD-SCDMA communication system, ascending power control method comprises open-loop power control method, close-loop power controlling method and outer-loop power controlling method.
Between NodeB and UE, do not set up when connecting, for example set up initial wireless resource control (Radio Resource Control at UE and communication network, RRC) in the process of Lian Jieing, at professional radio bearer (the Radio bearer of NodeB foundation, release or reprovision, RB) in the process, in the mobile various handoff procedures that cause owing to UE, NodeB and UE all adopt open-loop power control method to carry out uplink power control.After setting up good the connection between NodeB and the UE, NodeB and UE adopt close-loop power controlling method and outer-loop power controlling method to carry out uplink power control.
Particularly, in the open Loop Power control process, UE is with the expectation received power value PRX of NodeB
DPCHdesAnd the power loss value that signal transmits between UE and NodeB (abbreviation circuit loss value) L
PCCPCHAddition is with gained P as a result
DPCHAs the transmission power level of self, promptly UE is according to formula P
DPCH=PRX
DPCHdes+ L
PCCPCHCalculate the transmitting power of self.
Do not have feedback loop in the open-loop power control method, UE can't adjust the transmitting power of UE self according to the situation of NodeB received signal, and therefore, its deviation of carrying out power control is bigger.
In view of this, after setting up good the connection between NodeB and the UE, UE is on the basis of the current transmit power value that obtains after the process switch power control procedure, adopt close-loop power controlling method and outer-loop power controlling method to carry out uplink power control, adjust the transmitting power of UE self according to the situation of NodeB received signal.Wherein, this current transmission power level is the initial gain value that UE carries out closed power control and exterior ring power control.Exterior ring power control procedure and inner loop power control procedure are parallel carries out.
In the outer shroud power control process, NodeB receives the signal from UE, calculates the average Block Error Rate (BLER of this signal
Means), NodeB is according to this BLER
MeansTarget Block Error Rate (BLER with this NodeB self received signal
Target), adjust the signal interference ratio SIR that is used for closed power control
Target
Particularly: if BLER
Means〉=BLER
Target, i.e. BLER
MeansMore than or equal to BLER
Target, then with SIR
TargetValue increase, otherwise, with SIR
TargetValue reduce.
In the closed power control procedure, NodeB measures the average signal interference ratio (SIR from the signal of UE
Means), according to SIR
MeansWith the SIR that obtains in the exterior ring power control procedure
Target, determine power control word (TPC), send this TPC word by feedback loop to UE, UE puts in order the transmission power level of self according to the TPC tone of Chinese characters that receives.Particularly:
If SIR
Means≤ SIR
Target, NodeB sends the TPC word that transmission power level is increased a step-length (step) value to UE, after UE receives this TPC word, with the step value of transmission power level increase of self.Otherwise NodeB sends the TPC word that transmission power level is reduced a step value to UE, after UE receives this TPC word, self transmission power level is reduced a step value.Wherein, the initial transmission power level of UE self is determined by the open Loop Power control process.
The exterior ring power control procedure is a process more slowly.(Radio Network Controller RNC) finishes by radio network controller in ascending exterior ring power control.
In closed power control and exterior ring power control, NodeB sends the TPC word according to the situation of self received signal to UE, therefore, through closed power control and exterior ring power control procedure, the influence of signal power is adjusted the transmission power level of UE according to environmental factor, that is, the transmission power level of the UE of process closed power control procedure and open Loop Power control process has taken into account Effect of Environmental.
Although close-loop power controlling method is compared with open-loop power control method, its power departure is less, can make UE under the prerequisite that satisfies the communication quality requirement, adopt littler transmission power level, but, because different types of service requires different to the Initial Trans value that UE carries out closed power control, therefore, under the scene that the type of service of UE changes, UE need reenter up open Loop Power control from up closed power and ascending exterior ring power control, thereby redefines the Initial Trans value of self carrying out closed power control.
Wherein, the scene that changes of described type of service comprises: UE from single voice (CS) business or forms data (PS) business be changed to CS and PS voice and packet data concurrent service, UE from CS and PS voice and packet data concurrent service be changed to the professional or single PS business of single CS, UE discharges professional RB and gets back to the RRC connection status.Described single CS business is meant, only carries out the CS business between this UE and the NodeB; Single PS business is meant, only carries out the PS business between this UE and the NodeB; CS and PS voice and packet data concurrent service are meant, carry out the professional and PS business of CS between this UE and the NodeB simultaneously.
In above-mentioned scene, NodeB controls (RRC) signaling message with PRX by Radio Resource
DPCHdesBe notified to UE, UE receives this PRX
DPCHdes, reply to set up when finishing message, Release complete or reprovision and finishing message to NodeB at UE, when promptly arriving activationary time (activation time), UE is according to formula P
DPCH=PRX
DPCHdes+ L
PCCPCHCalculate the performance number of up open Loop Power control.
Wherein, NodeB notifies PRX to UE
DPCHdesThe signaling message that is utilized can be: RRC connects foundation (RRC CONNECTION SETUP) message, radio bearer is set up (RADIO BEARERSETUP) message, radio bearer release (RADIO BEARER RELEASE) message, physical channel reprovision (PHYSICAL CHANNEL RECONFIGURATION) message, transmission channel reprovision (TRANSPORT CHANNEL RECONFIGURATION) message or radio bearer reprovision (RADIO BEARER RECONFIGURATION) message.
In up open Loop Power control process, the PRX that UE need send according to NodeB
DPCHdesAdjust the up open loop transmit power value of UE self.Wherein, UE obtains PRX
DPCHdesMethod have two kinds: the first, the Operation and Maintenance table (Operation﹠amp of RNC; Maintenance OM) according to the difference of type of service, is the different PRX of NodeB configuration
DPCHdes, RNC is the PRX of NodeB configuration again with OM
DPCHdesBe handed down to UE.It two is, OM is the different up target signal interference ratio (UL_SIR_Target) of NodeB configuration according to the difference of type of service, and in addition, RNC receives the public measured value that NodeB sends, and then, RNC is according to PRX
DPCHdes=UL_SIR_Target * TimeslotISCP calculates PRX
DPCHdes, RNC is with the PRX that calculates
DPCHdesBe handed down to UE.Wherein, (TimeslotInterference Signal Code Powe TimeslotISCP) is public measured value to slot interfering signal of time sign indicating number power, has reflected the interference variations situation of wireless environment.In addition, public measured value also can be always receive broadband power (ReceivedTotal Wide-band Power, RTWP), about calculating PRX according to RTWP in the prior art
DPCHdesMethod no longer describe in detail herein.
In preceding a kind of method, OM is UE configuration PRX according to type of service just
DPCHdes, still, because environmental factor is also influential to the signal transmission, therefore, a kind of method is determined PRX before adopting
DPCHdesAccuracy relatively poor.In a kind of method in back, UE is according to PRX
DPCHdes=UL_SIR_Target * TimeslotISCP obtains PRX
DPCHdes
Fig. 1 is the PRX that the UE acquisition obtains according to TimeslotISCP in the prior art
DPCHdesFlow chart, as shown in Figure 1, this flow process specifically comprises:
In this step, NodeB also issues RNC with the UL_SIR_Target of this NodeB self.
In this step, RNC averages to the TimeslotISCP summation that all NodeB report afterwards.
Step 105, UE is according to P
DPCH=PRX
DPCHdes+ L
PCCPCHDetermine the transmitting power of self.
By such scheme as seen, UE obtains PRX according to public measured value
DPCHdesThe time, because UE shown in Figure 1 obtains PRX according to public measured value
DPCHdesProcess longer, need hundreds of millisecond consuming time by several seconds usually, and that environmental factor changes is very fast, the PRX that UE receives
DPCHdesCan not reflect the environmental factor of this moment, this makes that the precision of uplink power control is lower.And, adopt method shown in Figure 1 to carry out uplink power control, because each UE need send message between NodeB and the RNC and between RNC and the UE, therefore, also wasted the processing resource of NodeB and RNC.
Summary of the invention
In view of this, the purpose of the embodiment of the invention is to provide a kind of Poewr control method, to improve the precision of uplink power control.
For achieving the above object, the technical scheme of the embodiment of the invention specifically is achieved in that
A kind of Poewr control method comprises: when network side changes in the type of service of user equipment (UE), for this UE redistributes a yard resource, it is characterized in that this method also comprises:
The up yard resource of network side before judging the up sign indicating number resource redistributed and redistributing yard resource belongs to same carrier and identical time slot, and redistribute before yard resource and redistribute yard resource after UE when being in same sub-district, according to the up sign indicating number resource of redistributing and the up sign indicating number resource before redistributing yard resource to the requirement of the transmission power level of UE, and the type of service before type of service after changing and the variation is to the requirement of the transmission power level of UE, estimate to change the power offset values that causes, the power offset values that estimates is issued UE owing to redistributing up sign indicating number resource and type of service;
UE adds the above power offset values, the gained result is carried out uplink closed loop as initial gain value on the basis of current transmit power value.
As seen from the above technical solution, among the present invention, network side is after the type of service of UE changes and redistributes yard resource for UE, not directly to enter up open Loop Power control, but the up sign indicating number resource before and after redistributing belongs to same carrier and identical time slot, and when UE is in same sub-district before and after redistributing, estimate owing to redistributing the power offset values that up sign indicating number resource and type of service change the power offset values that causes, the power offset values that estimates is issued UE, and UE adds the above power offset values on the basis of current transmit power value, the gained result is carried out uplink closed loop as initial gain value.The UE that is in same sub-district is when using same carrier with identical time slot, environmental factor is identical to the influence of the initial value of uplink closed loop, the present invention has utilized these characteristics just, by estimating to change the power offset values that causes owing to redistributing up sign indicating number resource and type of service, the power offset values that estimates is issued UE, UE adds the above power offset values on the basis of current transmit power value, the gained result is carried out uplink closed loop as initial gain value, thereby to owing to redistribute yard resource and type of service and change caused performance number and change and compensate.
Thisly can avoid making UE to enter up open Loop Power control once more by type of service and code check being changed the method that caused transmission power level compensates, when changing, type of service directly enters open Loop Power control with UE in the prior art, be that UE directly selects for use with the type of service initial gain value corresponding with code check and compares, because the current transmit power value of UE has been adjusted through permanent closed power control and has been obtained, it has embodied the influence of surrounding environment factor, therefore, on the basis of this current transmission power level, add because professional variation and code check change the power excursion that causes, can utilize the influence of the environmental factor adjusted, improve the precision of uplink power control transmission power level.
In addition, when adopting Poewr control method of the present invention, only need NodeB that power offset values is issued UE and get final product, need not again repeatedly to send between NodeB and the RNC and between RNC and the UE message, therefore, can save the processing resource of NodeB and RNC.
Description of drawings
Fig. 1 is that UE obtains PRX according to TimeslotISCP in the prior art
DPCHdesFlow chart;
Fig. 2 is the Poewr control method flow chart of the present invention when type of service changes.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
In tdd CDMA mobile communication (TD-SCDMA) system, weigh the public measured value difference of different time-gap uplink interference level, the public measured value of the interference level of measurement different districts is also different, but it is identical weighing in the same sub-district, adopt the public measured value of interference level of the UE of same carrier and identical time slot.The present invention utilizes these characteristics just, after the type of service of UE changes, whether the up sign indicating number resource (up yard resource before and after promptly redistributing) after being judged as the up sign indicating number resource that UE redistributes and redistributing yard resource belongs to same carrier and identical time slot, and redistribute before yard resource and redistribute yard resource after (before and after promptly redistributing) UE whether be in same sub-district, if, then according to the up sign indicating number resource of redistributing and the up sign indicating number resource before redistributing yard resource to the requirement of the transmission power level of UE, and the type of service before type of service after changing and the variation is to the requirement of the transmission power level of UE, estimate to change the power offset values that causes, the power offset values that estimates is issued UE owing to redistributing up sign indicating number resource and type of service; UE adds the above power offset values, the gained result is carried out uplink closed loop as initial gain value on the basis of current transmit power value.The method of should add the above power offset values on the basis of current transmit power value, the gained result being carried out uplink closed loop as initial gain value can be called improved close-loop power controlling method.
Fig. 2 is the Poewr control method flow chart of the present invention when type of service changes, and as shown in Figure 2, this method comprises:
When step 201, network side change in the type of service of UE, for UE redistributes a yard resource.
In this step, the situation that the type of service of UE changes comprises: UE from single voice CS business or forms data PS business be changed to CS and PS voice and packet data concurrent service, UE from CS and PS voice and packet data concurrent service be changed to the professional or single PS business of single CS, UE discharges professional RB and gets back to the RRC connection status.
The code resource management module of network side is followed the principle of old sign indicating number priority allocation when redistributing yard resource for UE.For example, suppose current 8 group codes that have, every group code has two basic resources units (BRU), primary key and distribute from sign indicating number binding, and when sign indicating number resource occupation during smaller or equal to two BRU, the code resource management module can not changed the code character that UE takies.When this sign indicating number resource requirement smaller or equal to the sign indicating number of last time during resource requirement, the sign indicating number resource after selection subsets is redistributed as this BRU set that took from last time.When this sign indicating number resource requirement greater than the sign indicating number of last time during resource requirement, to comprise the mode priority allocation sign indicating number resource of old sign indicating number, that is, the set that the sign indicating number resource that guarantees to redistribute constitutes comprises the set of the sign indicating number resource formation of last time.Because the code resource management module is followed the principle of old sign indicating number priority allocation, on the one hand, can reduce and take the probability of sign indicating number under the transient state situation temporarily greater than the actual allocated sign indicating number, on the other hand, because carrier frequency and time slot that the same code resource is corresponding identical, therefore, when the sign indicating number resource before and after UE redistributes was identical, UE took identical carrier frequency and time slot before and after redistributing.Because the code resource management module is to carry out yard resource allocation according to the principle of old sign indicating number priority allocation, therefore, when the code resource management module is after UE redistributes yard resource, as a rule, the up sign indicating number resource before and after redistributing belongs to same carrier and identical time slot.
Up sign indicating number resource before and after step 202, network side judge whether to redistribute belong to same carrier with identical time slot and before and after redistributing UE be in same sub-district, if, execution in step 203, otherwise, execution in step 207.
Because the sign indicating number resource is distributed by the code resource management module, therefore, the code resource management module is known which yard resource occupation same carrier and identical time slot.In order to adopt improved close-loop power controlling method as far as possible, should make the up sign indicating number resource before and after redistributing belong to same carrier and identical time slot as far as possible.
In addition, well-known, network side is known each UE and is in which sub-district, therefore, network side know redistribute yard resource before and after a UE whether be in same sub-district.
The code resource management module is issued the described network side which sub-district each UE is in of knowing with the result whether its up sign indicating number resource of redistributing front and back of judging belongs to same carrier and identical time slot, therefore, this network side can judge up sign indicating number resource before and after whether redistributing belong to same carrier with identical time slot and before and after redistributing UE be in same sub-district.
See hereinafter narration for details about estimating to redistribute the specific implementation method that up sign indicating number resource and type of service change the power offset values that causes.
Can between network side and UE, reappoint the implication of the cell in the existing signaling message in advance, then in this step, network side utilizes existing signaling message indication UE to adopt improved Poewr control method, and with UE estimate owing to redistribute up sign indicating number resource and type of service and change in the cell that the power offset values that causes is carried at described existing signaling message and issue UE.Can also define new signaling message and indicate UE to adopt open-loop power control method or adopt close-loop power controlling method to carry out uplink power control, and the performance number of the performance number of open Loop Power control and/or closed power control is carried in this new signaling message issues UE.
In this step, the existing signaling message indication UE that the network side utilization redefines adopts improved Poewr control method, and with UE estimate owing to redistribute up sign indicating number resource and professional the variation in the cell that the power offset values that causes is carried at this existing signaling message that redefines issued UE, its concrete grammar sees hereinafter narration for details.
In this step, UE adds the power offset values that network side estimates on the basis of current transmission power level, and the gained result is carried out uplink closed loop as the initial value of uplink closed loop.
Particularly, improved close-loop power controlling method can be formulated as P among the present invention
DPCH=P
Now+ γ+β+Δ
Modify(dBm), wherein, P
DPCHBe the output power value of improved close-loop power controlling method, P
NowIt is the transmission power level of UE before this UE type of service changes, it promptly is the transmission power level of redistributing the preceding UE of yard resource, γ is the power adjustment that the spreading factor SF by the sign indicating number resource is determined, β is that UE is according to transformat combination (Transport Format Combination, TFC) power adjustment that calculates of signaling message sees also 3GPP25.223 agreement and 3GPP25.224 agreement about the concrete computational methods of β.P
NowThe result of+γ+β gained is that the UE described in this step is at current transmission power level.
Wherein, P
Now=P
DPCH_Pre+ step * ∑ TPC
i(dBm), P
DPCH_PreUplink transmission power value during for last traffic RB foundation, release or reprovision, step * ∑ TPC
iUp closed power control value adjusted value between expression last traffic RB foundation, release or reprovision and this professional RB foundation, release or the reprovision, it has embodied the influence of environmental factor to the transmitting power of UE.
Corresponding with step 204, in this step, network side also can utilize the cell or the new signaling message that redefine in the existing signaling message to indicate UE to enter up open Loop Power control.
In step 204 and step 207, how to redefine the implication of the cell in the existing signaling message and how to utilize the cell indication UE that redefines in the existing message to enter improved uplink closed loop or up open Loop Power control, see hereinafter narration for details.
In this step, UE enters up open Loop Power control according to method shown in Figure 1.
Network side described in Fig. 2 can be RNC.
Below the specific implementation method that up sign indicating number resource and type of service change the power offset values that causes is redistributed in the estimation that relates in the step 203 of Fig. 2 and be introduced, specifically lift two kinds of execution modes it is illustrated.
First execution mode:
In the present embodiment, estimate respectively owing to redistribute the first power offset values Δ that up sign indicating number resource causes
λWith the second power offset values Δ that causes owing to the type of service variation
Priority, UE adds Δ on the basis of current transmit power value
λAnd Δ
Priority, the gained result is carried out uplink closed loop as initial gain value.Because Δ
λEmbodied sign indicating number resource after redistributing to the requirement of performance number and the sign indicating number resource before redistributing to the difference between the requirement of performance number, Δ
PriorityEmbodied type of service after changing to the requirement of performance number and the type of service before changing to the difference between the requirement of performance number, therefore, can be with Δ
λWith Δ
PriorityAdd and value as owing to redistribute up sign indicating number resource and type of service changes the power offset values that causes.
Estimate Δ
λMethod can be: in advance by the pairing performance number of code rate under every kind of coded system of Computer Simulation, utilize 2 differential techniques or 3 differential techniques to obtain the corresponding relation of code rate and performance number under every kind of coded system, then this corresponding relation is stored in network side.Network side is estimated Δ at needs
λThe time, coded system and code rate according to the up sign indicating number resource before and after redistributing, the code rate under the up sign indicating number resource code mode before inquiry is redistributed and the corresponding relation of performance number, first performance number of the code rate correspondence of up sign indicating number resource before obtaining redistributing, the code rate under the up sign indicating number resource code mode after inquiry is redistributed and the corresponding relation of performance number, second performance number of the code rate correspondence of up sign indicating number resource after obtaining redistributing, second performance number is deducted first performance number, and the difference of gained promptly is a Δ
λ
Estimate Δ
PriorityMethod can be: characterize type of service priority and the characteristic value Y of user class priority and the corresponding relation of performance number in network side storing in advance.Network side is estimated Δ at needs
PriorityThe time, according to type of service priority before the type of service acquisition sign variation before changing and the first characteristic value Y of user class priority
1, according to type of service priority after the type of service acquisition sign variation after changing and the second characteristic value Y of user class priority
2, with Y
2Corresponding performance number deducts Y
1Corresponding performance number, the difference of gained promptly is a Δ
Priority
Characteristic value Y is the functional value of the pairing network quality of type of service (Qos) parameter, this Qos parameter can comprise type of service (Traffic Class) parameter, Business Processing priority (TrafficHandling Priority, THP) parameter and distribution keep priority (Allocation Retain Priority, ARP) parameter, Traffic Class parameter characterization wherein type of service priority, THP parameter characterization user class priority.According to the type of service before and after redistributing, the method for inquiry Y and the corresponding relation of performance number specifically: according to redistributing the preceding corresponding Qos calculation of parameter characteristic value Y of type of service
1, from the corresponding relation of Y and performance number, inquire Y
1Corresponding performance number is according to the corresponding Qos calculation of parameter of the type of service after redistributing characteristic value Y
2, from the corresponding relation of Y and performance number, inquire Y
2Corresponding performance number.Concrete functional relation Y=f (Traffic Class between Y and the Qos parameter, THP, ARP......) not within discussion scope of the present invention, the corresponding relation between Y and the performance number can (Operation Maintenance OM) disposes by the Operation and Maintenance table.
Second execution mode:
Present embodiment proposes a kind of estimation and redistributes up sign indicating number resource and the professional engineering alternative method that changes the power offset values that causes, particularly: the difference that the current goal signal interference ratio Current_UL_Target_SIR of exterior ring power control output before network side obtains the initial target signal interference ratio Initial_UL_Target_SIR that redistributes exterior ring power control output after yard resource and redistributes yard resource, Initial_UL_Target_SIR deduct the Current_UL_Target_SIR gained is to redistribute up sign indicating number resource and the professional power offset values that causes that changes.
Wherein, Initial_UL_Target_SIR has embodied the requirement to the signal interference ratio of UE of the new type of service of redistributing UE after yard resource and User Priority, thereby has reflected the requirement to the transmitting power of UE; Current_UL_Target_SIR has embodied the requirement to the signal interference ratio of UE of the old type of service of redistributing UE before yard resource and User Priority, thereby has reflected the requirement to the transmitting power of UE.Thereby, can deduct the difference of Current_UL_Target_SIR gained as redistributing up sign indicating number resource and the professional power offset values that causes that changes with Initial_UL_Target_SIR.
Below implication that redefines the cell in the existing signaling message that relates in the step 207 and the method for utilizing the cell indication UE that redefines in the existing message to enter improved uplink closed loop or up open Loop Power control are introduced.
Stipulate that in 3-G (Generation Three mobile communication system) 3GPP25.331 agreement Uplink DPCH info information and UplinkDPCH power control info information in the signaling messages such as RRC CONNECTIONSETUP message, RADIO BEARER SETUP message, RADIO BEARER RELEASE message, PHYSICAL CHANNEL RECONFIGURATION message, TRANSPORTCHANNEL RECONFIGURATION message and RADIO BEARERRECONFIGURATION message all can be carried PRX
DPCHdes, particularly, in Uplink DPCHinfo information and Uplink DPCH power control info information, containing UL target SIR cell, the value of this cell is exactly PRX
DPCHde
Uplink DPCH info information is identical with the implication of ULtarget SIR cell in the Uplink DPCH power control info information, specifically as table one:
| Cell | Demand | Type and reference value | Semantic interpretation | Version |
| UL target SIR | MP | Type is a real number, and reference range is that step-length is 0.5dB from-11dB to 20dB | For the TDD system of 1.28Mcps, this parameter is represented PRX DPCHdes, this parameter range is-and 120dB is to-58dB, and step-length is 1dB | REL-4 |
Table one
Among the present invention, implication to UL target SIR cell in Uplink DPCH info information and the Uplink DPCH power controlinfo information defines again in advance, UL target SIR in the Uplink DPCH info information is represented with UL target SIR_1 (MP), UL target SIR in the Uplink DPCH powercontrol info information is represented with UL target SIR_2 (OP), redefine the implication of UL target SIR_1 and UL target SIR_2, specifically as shown in Table 2:
| UL target SIR_1 | UL target SIR_2 | Implication |
| Fill in and its implication is PRX DPCHdes | Do not fill in | When UE finishes message at answer RB foundation, release or reprovision (activationary time arrival), adopt uplink open-loop power control |
| Fill in and its implication is PRX DPCHdes | Fill in and its implication is a Δ modify | 1., when UE finishes message at answer RB foundation, release or reprovision (activationary time arrival), adopt improved uplink closed-loop power control if UE supports this function; 2., when UE finishes message at answer RB foundation, release or reprovision (activationary time arrival), adopt uplink open-loop power control if UE does not support this function |
Table two
Network side is filled in UL target SIR_1 and UL target SIR_2 according to table two, that is, if network side indication UE adopts up open-loop power control method, then with PRX
DPCHdesValue fill in into ULtarget SIR_1, and do not fill in UL target SIR_2; Select improved close-loop power controlling method to carry out power control if network side indication UE is preferential, then with PRX
DPCHdesValue fill in into ULtarget SIR_1, and with Δ
ModifyValue fill in into UL target SIR_2.
UE receives the Uplink DPCH info information and the Uplink DPCH powercontrol info information of network side transmitted, identify UL target SIR_1 and UL target SIR_2 current fill in situation after, select ascending power control method according to the implication that reappoints in the table two.Particularly, UL target SIR_2 is not filled in if UL target SIR_1 is filled in, then UE sets up (activationary time of UE arrives) when finishing message, RB Release complete or RB reprovision and finishing message replying RB, UE with the value of UL target SIR_1 as PRX
DPCHdesValue carry out up open Loop Power control; If UL target SIR_2 is filled in, then if UE supports improved close-loop power controlling method, UE with the value of UL target SIR_2 as Δ
ModifyCarry out uplink closed loop, otherwise, UE with the value of UL target SIR_1 as PRX
DPCHdesValue carry out up open Loop Power control.
Certainly, also can between network side and UE, define new cell, network side utilizes this new cell indication UE to carry out up open Loop Power control or carry out uplink closed loop, and relevant parameters issued UE by this new cell, after UE receives this new cell, relevant parameter according to carrying in the indication of this new cell and this new cell carries out up open Loop Power control or uplink closed loop.
As seen from the above technical solution, because the present invention can avoid making UE to enter up open Loop Power control once more by the method that type of service and code check is changed caused transmission power level and compensate, when changing, type of service directly enters open Loop Power control with UE in the prior art, be that UE directly selects for use with the type of service initial gain value corresponding with code check and compares, because the current transmit power value of UE has been adjusted through permanent closed power control and has been obtained, it has embodied the influence of surrounding environment factor, therefore, on the basis of this current transmission power level, add because professional variation and code check change the power excursion that causes, can utilize the influence of the environmental factor adjusted, improve the precision of uplink power control transmission power level.
In addition, when adopting Poewr control method of the present invention, only need NodeB that power offset values is issued UE and get final product, need not again repeatedly to send between NodeB and the RNC and between RNC and the UE message, therefore, can save the processing resource of NodeB and RNC.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1, a kind of ascending power control method comprises: when network side changes in the type of service of user equipment (UE), for this UE redistributes a yard resource, it is characterized in that this method also comprises:
The up yard resource of network side before judging the up sign indicating number resource redistributed and redistributing yard resource belongs to same carrier and identical time slot, and redistribute before yard resource and redistribute yard resource after UE when being in same sub-district, according to the up sign indicating number resource of redistributing and the up sign indicating number resource before redistributing yard resource to the requirement of the transmission power level of UE, and the type of service before type of service after changing and the variation is to the requirement of the transmission power level of UE, estimate to change the power offset values that causes, the power offset values that estimates is issued UE owing to redistributing up sign indicating number resource and type of service;
UE adds the above power offset values, the gained result is carried out uplink closed loop as initial gain value on the basis of current transmit power value.
2, the method for claim 1 is characterized in that, described estimation is owing to redistribute up sign indicating number resource and type of service changes the power offset values that causes and comprises:
Estimate respectively owing to redistribute first power offset values that up sign indicating number resource causes and because type of service changes second power offset values that causes;
Described UE adds the above power offset values on the basis of current transmit power value:
UE adds first power offset values and second power offset values on the basis of current transmit power value.
3, method as claimed in claim 2 is characterized in that,
This method further comprises: the corresponding relation of storing code rate and performance number under every kind of coded system in advance; Described corresponding relation obtains by emulation in advance;
Described estimation is owing to redistribute first power offset values that up sign indicating number resource causes and be: according to the coded system and the code rate of the up sign indicating number resource of redistributing and the coded system and the code rate of the up sign indicating number resource before redistributing yard resource, the code rate under the corresponding encoded mode of inquiry storage in advance and the corresponding relation of performance number, performance number with the code rate correspondence of the up sign indicating number resource redistributed, deduct the performance number of the code rate correspondence of redistributing the up sign indicating number resource before yard resource, with the difference of gained as first power offset values.
4, method as claimed in claim 2 is characterized in that,
This method further comprises: storage in advance characterizes type of service priority and the characteristic value of user class priority and the corresponding relation of performance number;
Described estimation comprises owing to type of service changes second power offset values that causes: type of service priority before changing according to the type of service acquisition sign before changing and first characteristic value of user class priority, according to type of service priority after the type of service acquisition sign variation after changing and second characteristic value of user class priority, the corresponding relation of query characteristics value and performance number, the performance number of the second characteristic value correspondence is deducted the performance number of the first characteristic value correspondence, with the difference of gained as second power offset values.
5, the method for claim 1 is characterized in that, described estimation is owing to redistribute up sign indicating number resource and type of service changes the power offset values that causes and comprises:
Exterior ring power was controlled the initial target signal interference ratio Initial_UL_Target_SIR of output and is redistributed the current goal signal interference ratio Current_UL_Target_SIR that the preceding exterior ring power control of yard resource is exported after network side obtained and redistributes yard resource, and the difference that Initial_UL_Target_SIR is deducted the Current_UL_Target_SIR gained is as described power offset values.
6, the method for claim 1 is characterized in that, the type of service of described UE changes and comprises:
UE is changed to CS and PS voice and packet data concurrent service from single voice CS business or forms data PS business;
Perhaps, UE is changed to the professional or single PS business of single CS from CS and PS voice and packet data concurrent service;
Perhaps, UE discharges professional radio bearer RB and gets back to the radio resource control RRC connection status.
7, the method for claim 1 is characterized in that, this method further comprises:
When UE is in different districts before the up sign indicating number resource of network side before judging the up sign indicating number resource redistributed and redistributing yard resource belongs to different carrier frequency and/or different time-gap and/or redistribute yard resource and after redistributing yard resource, indicate UE to enter up open Loop Power control.
8, method as claimed in claim 7 is characterized in that, describedly the power offset values that estimates is issued UE comprises:
Network side is carried at the power offset values that estimates in the up target signal interference ratio UL target SIR cell in the uplink special physical channel power control UplinkDPCH power control info information.
9, method as claimed in claim 8 is characterized in that,
Described indication UE enters up open Loop Power control and comprises:
Network side is not filled in the UL target SIR cell in the Uplink DPCH power control info information, and with the expectation received power value PRX of NodeB in the up open Loop Power control
DPCHdesWrite in the UL target SIR cell in the uplink special physical channel control Uplink DPCH controlinfo information;
This method further comprises:
UE receives Uplink DPCH power control info information and Uplink DPCH powercontrol info information, if the ULtarget SIR cell that identifies in the Uplink DPCH power control info information of UE is not filled in, then UE with the value of UL targetSIR cell in the Uplink DPCH control info information as PRX
DPCHdesEnter up open Loop Power control, if the UL target SIR cell that UE identifies in the UplinkDPCH power controlinfo information is filled in, judge then whether UE self supports described the above power offset values that adds on the basis of current transmit power value, the gained result is carried out uplink closed loop as initial gain value, if, with the value of the UL target SIR cell in the Uplink DPCH power controlinfo information as described power offset values, if not, then with the value of the UL target SIR cell in the UplinkDPCH control info information as PRX
DPCHdesEnter up open Loop Power control.
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| CN 200810225752 CN101404528B (en) | 2008-11-11 | 2008-11-11 | Ascending power control method |
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| CN 200810225752 CN101404528B (en) | 2008-11-11 | 2008-11-11 | Ascending power control method |
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| CN109104761A (en) * | 2017-06-21 | 2018-12-28 | 维沃移动通信有限公司 | A kind of information configuring methods, power regulating method, base station and mobile terminal |
| CN109104761B (en) * | 2017-06-21 | 2020-08-18 | 维沃移动通信有限公司 | Information configuration method, power adjustment method, base station and mobile terminal |
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