CN103813430A - Power report method and device in carrier aggregation system - Google Patents
Power report method and device in carrier aggregation system Download PDFInfo
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- CN103813430A CN103813430A CN201210436178.1A CN201210436178A CN103813430A CN 103813430 A CN103813430 A CN 103813430A CN 201210436178 A CN201210436178 A CN 201210436178A CN 103813430 A CN103813430 A CN 103813430A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/365—Power headroom reporting
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Abstract
This invention discloses a power report method and a device in a carrier aggregation system, which guarantees the transmission of data and signaling in a serving cell. The power report method comprises: UE supports respectively transmitting SRS and uplink data in different serving cells at the same time, or, the UE adopts one of the following formulas to calculate and transmit PH information of the SRS while supporting transmitting SRS and uplink control information respectively in different serving cells at the same time. The formulas are as follow: PH information =the biggest transmission of the serving cell when the UE is transmitting the SRS -the data transmission channel transmission power which is evaluated by the UE in the serving cell; and PH information =the biggest transmission power of the serving cell when UE is transmitting the SRS-the uplink data transmission channel transmission power which is evaluated by the UE in the serving cell-SRS transmission power. UE reports PHR information which carries the PH information. The power report device is positioned in the UE, comprising a PH information calculation module and a PHR information report module.
Description
Technical field
The present invention relates to mobile communication technology field, be specifically related to power report method and device in a kind of carrier aggregation system.
Background technology
At present, wireless communication system uses electromagnetic wave and that fix or mobile wireless telecommunications user equipment (radio telephone or notebook and apparatus such as computer with wireless communication card all can be called as subscriber equipment) to communicate.In general,, in the time carrying out radio communication, within subscriber equipment (User Equipment is called for short UE) is positioned at the wireless coverage of system, and communicate by the carrier wave in radio communication channel and system.
The control network element of wireless communication system can be according to communication protocol or other equipment of technology control of system agreement.Control network element comprises control station and network.Control station includes but not limited to base station (Node B, or eNode B, comprise macro base station, micro-base station, Home eNodeB etc.), relay station (Relay Station, be called for short RS) and subscriber equipment, in the time that subscriber equipment is used as control station, this subscriber equipment can be the interim control station of conduct of selecting in subscriber equipment according to pre-defined rule.Communication protocol or technology include but not limited to GSM(Global System for Mobile Communications, global system for mobile communications), CDMA(Code Division Multiple Access, code division multiple access), EDGE(Enhanced Data Rate for GSM Evolution, enhanced data rates for gsm evolution technology), CDMA2000, TD-SCDMA(Time Division-Synchronous Code Division Multiple Access, TD SDMA), HSPA(High Speed Packet Access, high-speed packet access), WCDMA(Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)), EVDO(Evolution Data Only, only evolution data), HSOPA(High Speed OFDM Packet Access, high speed orthogonal frequency division multiplexed packet access), WiMAX(World Interoperability for Microwave Access, micro-wave access global inter communication), LTE(Long Term Evolution, Long Term Evolution) and LTE-A(LTE-Advanced, Long Term Evolution-senior).
The main process of the uplink power control of LTE is:
(1) UE receives TPC(transmitting power control, power control command);
(2) UE carries out the measurement of downlink wireless channel pilot reception power, calculating path loss (Pathloss), and UE is with calculation of parameter transmitting power P such as Pathloss, Uplink Shared Channel bandwidth, transport block format and TPC; If subscriber equipment has triggered PHR(power headroom report, power headroom reporting (PHR)), and satisfied transmission condition, UE also need to send PHR on Uplink Shared Channel so.
(3) eNodeB(evolved base station) receive after Physical Uplink Shared Channel and/or PHR, send TPC by the Physical Downlink Control Channel of DCI Format 0/3/3A to UE; Return to execution step (1).
In system, UE adopts dynamic resource distribution mode, and adopt adaptive chnnel coding modulation system (adaptive modulation and coding, AMC), in LTE, the uplink transmission power of UE distributes to resource, code modulation mode is relevant, therefore independent power control mode has also been not enough to the power control task of UE in LTE, by UE to eNodeB send PHR as PUSCH(Physical Uplink Shared Channel) resource budget information, provide foundation for eNodeB carries out uplink resource allocation.Have larger power headroom if PHR reflects UE, eNodeB can distribute more wireless resource block to UE so; There is no power headroom if PHR reflects UE, or there is no more power headroom, eNodeB can only distribute less wireless resource block or low-order-modulated order to UE so.
In LTE system UE to the transmission frequency of the PHR of eNodeB lower than eNodeB the transmission frequency to the TPC of UE.The transmission of PHR need to have two steps: be first to trigger, then report.UE is in the time that cycle PHR timer expires or path loss changes greatly or PHR configuration or trigger PHR while reshuffling and report, and after UE has obtained enough the PUSCH resource for PHR, UE reports PHR to eNodeB.
PHR is calculated as PH (i)=P
cMAX-P
ue, tx, PH is power headroom value (Power headroom), P
cMAXfor UE configuration maximum transmission power (configured maximum output power), P
cMAX_L≤ P
cMAX≤ P
cMAX_H, P
cMAX_Lfor maximum transmission power minimum, P
cMAX_Hfor maximum transmission power peak, P
cMAXspan mainly contain two kinds of limited resource:
1) be limited to the control of eNodeB, such as the little covering scene in micro-base station, eNodeB can control the maximum transmission power of UE, to reduce the interference of UE to adjacent area;
2) the useless out-of-band radiation of UE (Out of band emission), as in order to meet SEM(Spectrum emission mask, spectrum emission mask (SEM)) and ACLR(Adjacent Channel Leakage Ratio, adjacent band reveal than) etc. requirement, UE can design complicated filter, is used for reducing out-of-band radiation, or UE reduces maximum transmission power, the former can increase the cost of UE, and the latter has reduced the uplink capacity of UE.Because the method for reduction transmitting power (also referred to as back-off, power reduce, PR) is simply effective, a large amount of UE can adopt the method to reach the requirement of out-of-band radiation in the time realizing.But in order to guarantee the up transmitting capacity of UE, do not allow the unconfined reduction power of UE, to such an extent as to can not carry out basic uplink service, the MPR(Maximum Power Reduction that in agreement, definition allows, maximum power rollback value), because the size of out-of-band radiation configures with the modulation /demodulation that sends data, and the bandwidth taking has relation, if LTE is in agreement 36.101, be provided with different MPR by different transmission bandwidth and modulation /demodulation pattern, each UE can arrange actual PR value by the realization of self, as long as meet PR≤MPR.
So consider after back-off, UE is at specified transmitting power P
powerclassbasis on deduct actual back-off value, and need to consider that after maximum transmission power that above-mentioned network allows, the minimum value of getting in both is actual P
cMAX.
P
ue, txfor the up theoretical transmitting power of UE.In LTE, in PHR, only consider the transmitting power of PUSCH, so P
ue, tx=P
ue, pusch, P
ue, puschin LTE, be the transmitting power of PUSCH, be defined as P
ue, pusch=10log
10(M
pUSCH(i))+P
o_PUSCH(t)+α (t) PL+ Δ
tF(i)+f (i), M wherein
pUSCH(i) for the transmission bandwidth of PUSCH is by the MCS(Modulation and Coding Scheme dispatching, modulating-coding form) configuration determines, P
o_PUSCH(t) be open loop power control adjusted value, α (t) is part path loss offset, and t is semi-static variable, and PL is path loss, Δ
tF(i) be transformat offset, f (i) is closed-loop power control adjusted value, and the transmitting power of PUSCH is with the bandwidth that takies resource of PUSCH, and the path loss between UE and base station and the configuration of open loop power control and closed-loop power control are relevant.If do not consider that PHR computing formula is PH (i)=P due to the back-off (being the restriction of P-MPR) that power management (power management) brings
cMAX-{ 10log
10(M
pUSCH(i))+P
o_PUSCH(t)+a (t) PL+ Δ
tF(i)+f (i) }, wherein PHR is take dB as unit, and in formula, power is take dBm as unit.
In LTE, if do not consider that the triggering (trigger) that PHR reports mainly contains following three kinds of situations due to the back-off (being the restriction of P-MPR) that power management (power management) brings:
1) PHR forbids that timer (prohibitPHR-Timer) is overtime, and the variable quantity that reports with respect to last PHR of path loss to be greater than predetermined threshold dl-PathlossChange(unit be a decibel dB) time;
2) PHR cycle timer (periodicPHR-Timer) is overtime;
3) configuration of PHR functional entity or reshuffle;
After PHR is triggered, in the time that UE has uplink scheduling resource to hold PHR, PHR is sent to eNB by UE.
Along with the development of communication system and technology, for improving systematic function, carrier aggregation communication system starts to occur.Carrier aggregation technology comprises various ways, and one of them is exactly carrier aggregation (Carrier Aggregation, CA).For example, in LTE-A system, so-called carrier aggregation, is exactly that multiple component carriers (Component Carrier, CC) can condense together and are used to provide larger bandwidth.
In carrier aggregation system, for some users, can there be a first carrier and one or more the second carrier wave.First carrier is generally main carrier wave, can carrier signaling and data, and the second carrier wave is mainly used in carrying data, also can bearing part signaling.Carrier wave can be divided into up-link carrier (arriving control station communication for subscriber equipment) and descending carrier (arriving communications of user equipment for control station).The wireless service areas of corresponding first carrier is first service district, and the wireless service areas of corresponding the second carrier wave is second service district.In different systems, first carrier, first service district and the second carrier wave, the concept in second service district and title all can have corresponding details definition.
For example, in LTE-A system, the subscriber equipment that has configured carrier aggregation only has a RRM (Radio Resource Control, RRC) to connect in net.RRM connects to be set up or re-establishes or switches while generation, NAI(Network Access Identifier is provided, Network Access Identifier symbol) service area (Serving Cell) of mobile message and safety input is called as primary service area (Primary Cell, PCell), it is first service district, and configuration can configure one or more auxiliary service area (Secondary Cell, SCell), i.e. second service district according to UE capability.Further, carrier wave corresponding to primary service area is exactly first carrier, it is main carrier, comprising descending principal component carrier wave (the Downlink Primary Component Carrier to customer equipment data transmission for control station, DL PCC) with the up principal component carrier wave of communicating by letter to control station number for subscriber equipment (Uplink Primary Component Carrier, UL PCC).Similarly, the carrier wave that auxiliary service area is corresponding is exactly the second carrier wave, it is auxiliary carrier wave, wherein, comprise descending auxiliary component carrier (the Downlink Secondary Component Carrier to customer equipment data transmission for control station, DL SCC) and arrive the up auxiliary component carrier (Uplink Secondary Component Carrier, UL SCC) of control station data communication for subscriber equipment.
In carrier aggregation system, the condition that PHR is triggered has also comprised the activation of SCell.
In LTE system, in order to realize and to keep the uplink synchronous between subscriber equipment and base station, base station is according to propagation delay time transmitting time lead (the Timing Advance between base station and each subscriber equipment, referred to as TA) to each subscriber equipment, the opportunity that the Timing Advance that subscriber equipment sends according to base station shifts to an earlier date or postpones uplink separately, thereby make up the propagation delay time of user terminal to base station, make the upward signal of different user devices all within the receive window of base station, arrive base station.
Introduce after carrier aggregation technology, subscriber equipment may be simultaneously operated on multiple component carriers, and these component carriers can be continuous on frequency band, can be also discontinuous; Can be in identical frequency band, can also be to come from different frequency bands.For the discontinuous situation of component carrier, or component carrier comes from the situation of different frequency bands, and because each component carrier has different transmission characteristics, the Timing Advance on each component carrier may be different; Even each component carrier belongs to identical frequency band and on frequency band continuously, if each component carrier is derived from different Remote Radio Unit (remote radio units, referred to as RRU), or cover in order to increase community, each component carrier is processed via different repeater (repeater) respectively, and the Timing Advance on each component carrier also may be different.In LTE system, it (is a carrier wave for TDD mode that UE is only operated on a carrier wave, comprise up, descending a pair of carrier wave for mode of frequency division duplexing, for convenience of description, be called for short a carrier wave here), only need to be at the up transmission SRS(interception reference signal of a carrier wave, sounding reference signal), and in carrier aggregation, UE may be simultaneously operated on multiple component carriers, and can on these component carriers, send SRS.
In Rel-10 carrier aggregation system, do not support SRS on the different service cells of UE and upstream data (at PUSCH(physical layer Uplink Shared Channel, Physical uplink share channel) the upper data of transmitting) parallel transmission, do not support SRS on the different service cells of UE and ascending control information (at PUCCH(physical layer ascending control channel yet, Physical uplink control channel) the upper data of transmitting) parallel transmission, in Rel-11, UE has supported on different service cells SRS and ascending control information parallel transmission on SRS and upstream data parallel transmission and different service cells, thereby now due to SRS and upstream data or the limited quality that cannot guarantee UE transmitting uplink data and signalling of the concurrent UE uplink transmission power that may cause of ascending control information.So far, not yet propose effective solution for this problem, just need to consider that a kind of suitable power report method is to address the above problem here.
Summary of the invention
The technical problem to be solved in the present invention is to provide power report method and the device in a kind of carrier aggregation system, can solve when UE supports the while and on different service cells, send respectively SRS and upstream data, or UE is while supporting simultaneously to send respectively SRS and ascending control information on different service cells, guarantee the transmission of data and signaling on Serving cell.
For solving the problems of the technologies described above, the invention provides the power report method in a kind of carrier aggregation system, comprising:
Subscriber equipment (UE) supports on different service cells, to send respectively interception reference signal (SRS) and upstream data simultaneously, or UE is while supporting simultaneously to send respectively SRS and ascending control information on different service cells, described UE adopts one of following formula to calculate power headroom (PH) information of the Serving cell that sends SRS:
The transmitting uplink data channel transmission power that described PH information=UE estimates on described Serving cell at the maximum transmit power-UE of the Serving cell of described transmission SRS;
The transmitted power of transmitting uplink data channel transmission power-SRS that described PH information=UE estimates on described Serving cell at the maximum transmit power-UE of the Serving cell of described transmission SRS;
UE reporting power margin report (PHR) information is carried described PH information in described PHR information.
Further, in the time that UE supports to send respectively SRS and upstream data on different service cells simultaneously, described UE reports PHR information, comprising:
When described UE sends respectively SRS and upstream data simultaneously on different service cells, report the PHR information of this UE to control station; Or, before described UE sends respectively SRS and upstream data simultaneously on different service cells, report the PHR information of this UE to control station.
Further, in the time that UE supports to send respectively SRS and ascending control information on different service cells simultaneously, described UE reports PHR information, comprising:
When described UE sends respectively SRS and ascending control information simultaneously on different service cells, report the PHR information of this UE to control station; Or, before described UE sends respectively SRS and ascending control information simultaneously on different service cells, report the PHR information of this UE to control station.
Further, described different service cells, comprises main Serving cell and the auxiliary serving cell having activated, or any two Serving cells of having activated.
Further, described different Serving cell belongs to same carrier wave set or belongs to different carrier group.
Further, described method also comprises, in described PHR information, carry the sign of the described Serving cell corresponding with described PH information, in the time only having SRS to send in described transmission SRS community, the sign of described Serving cell is used for identifying on current service cell without upstream data or ascending control information transmission.
For solving the problems of the technologies described above, the present invention also provides the reporting device of the power in a kind of carrier aggregation system, is positioned at subscriber equipment (UE), comprises power headroom (PH) information computing module and power headroom reporting (PHR) (PHR) information reporting module, wherein:
Described PH information computing module, for send respectively interception reference signal (SRS) and upstream data in current UE support on different service cells simultaneously, or current UE support while simultaneously sending respectively SRS and ascending control information on different service cells, adopts one of following formula to calculate the PH information of the Serving cell that sends SRS:
The transmitting uplink data channel transmission power that described PH information=UE estimates on described Serving cell at the maximum transmit power-UE of the Serving cell of described transmission SRS;
The transmitted power of transmitting uplink data channel transmission power-SRS that described PH information=UE estimates on described Serving cell at the maximum transmit power-UE of the Serving cell of described transmission SRS;
Described PHR information reporting module for reporting PHR information, is carried the PH information that described PH information computing module calculates in described PHR information.
Further, in the time that current UE support sends respectively SRS and upstream data simultaneously on different service cells, described PHR information reporting module reports PHR information, comprising:
Described PHR information reporting module, in the time that current UE sends respectively SRS and upstream data simultaneously on different service cells, reports the PHR information of this UE to control station; Or, before current UE sends respectively SRS and upstream data simultaneously on different service cells, report the PHR information of this UE to control station.
Further, in the time that current UE support sends respectively SRS and ascending control information simultaneously on different service cells, described PHR information reporting module reports PHR information, comprising:
Described PHR information reporting module, in the time that current UE sends respectively SRS and ascending control information simultaneously on different service cells, reports the PHR information of this UE to control station; Or, before current UE sends respectively SRS and ascending control information simultaneously on different service cells, report the PHR information of this UE to control station.
Further, described different service cells, comprises main Serving cell and the auxiliary serving cell having activated, or any two Serving cells of having activated.
Further, described different Serving cell belongs to same carrier wave set or belongs to different carrier group.
Further, described PHR information reporting module is also for carrying the sign of the described Serving cell corresponding with described PH information in described PHR information, in the time only having SRS to send in described transmission SRS community, the sign of described Serving cell is used for identifying on current service cell without upstream data or ascending control information transmission.
The application initiatively sends the real-time power information of UE in Shang Xiang base station, Serving cell by UE, solve and can on different districts, send respectively SRS and upstream data as UE simultaneously, or while simultaneously sending respectively SRS and ascending control information on different districts, the problem of the transmission of data and signaling on assurance Serving cell, make base station side can adjust the power of subscriber equipment in Serving cell transmitting data and/or signaling, and correct demodulation related data and/or signaling, and then reach the effect that improves efficiency of transmission.
Accompanying drawing explanation
Fig. 1 is the flow chart of the embodiment of the present invention 1;
Fig. 2 is reporting device structural representation of the present invention;
Fig. 3 is the flow chart of application example 1 of the present invention;
Fig. 4 is the flow chart of application example 2 of the present invention;
Fig. 5 is the flow chart of application example 3 of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing, embodiments of the invention are elaborated.It should be noted that, in the situation that not conflicting, the combination in any mutually of the feature in embodiment and embodiment in the application.
Embodiment 1
The present embodiment is introduced the power report method in carrier aggregation system, as shown in Figure 1, comprising:
Step 10, UE supports simultaneously on different service cells, to send respectively SRS and upstream data, or UE is while supporting to send respectively SRS and ascending control information on different service cells simultaneously, and this UE adopts one of following formula to calculate the PH information of the Serving cell that sends SRS:
The transmitting uplink data channel transmission power that PH information=UE estimates on this Serving cell at the maximum transmit power-UE of the Serving cell of transmission SRS; Formula (1)
The transmitted power of transmitting uplink data channel transmission power-SRS that PH information=UE estimates on this Serving cell at the maximum transmit power-UE of the Serving cell of transmission SRS; Formula (2)
Above-mentioned UE supports on different service cells, to send respectively SRS and upstream data simultaneously, refers to: UE is supported in a Serving cell and sends SRS, sends upstream data (sending upstream data on PUSCH) in another Serving cell simultaneously; UE supports on different service cells, to send respectively SRS and ascending control information simultaneously, refers to: UE is supported in a Serving cell and sends SRS, sends ascending control information (sending ascending control information on PUCCH) in another Serving cell simultaneously.
The PH that UE adopts formula (1) to calculate, do not consider the power of SRS, UE does not consider that in the time reporting the PH of the Serving cell that sends SRS the power of SRS can reduce the complexity that UE realizes, the power taking while transmission due to SRS is less, therefore in the time of rated output surplus for the power of realizing simple consideration and can not calculate SRS.
The PH that UE adopts formula (2) to calculate, consider the power of SRS, UE considers that in the time reporting the pH value of Serving cell the power of SRS can make the calculating of this Serving cell pH value more accurate, UE reports after PHR to base station, base station is carried out power adjustment according to the PH information of this Serving cell in PHR to UE, and UE can realize uplink power control more accurately.
Step 11, UE reports PHR information, carries the PH information of calculating in this PHR information.
In the time that UE supports to send respectively SRS and upstream data on different service cells simultaneously, UE reports the trigger condition of PHR information to comprise: when UE simultaneously sends respectively SRS and upstream data on different service cells, or before UE sends respectively SRS and upstream data simultaneously on different service cells.Be while the UE while sending respectively SRS and upstream data on different service cells, report the PHR information of this UE to control station; Or, before UE sends respectively SRS and upstream data simultaneously on different service cells, report the PHR information of this UE to control station.
In the time that UE supports to send respectively SRS and ascending control information on different service cells simultaneously, UE reports the trigger condition of PHR information to comprise: when UE simultaneously sends respectively SRS and ascending control information on different service cells, or before UE sends respectively SRS and ascending control information simultaneously on different service cells.Be while the UE while sending respectively SRS and ascending control information on different service cells, report the PHR information of this UE to control station; Or, before UE sends respectively SRS and ascending control information simultaneously on different service cells, report the PHR information of this UE to control station.
UE is after reporting PHR, according to the power control information adjustment of control station feedback or do not adjust transmitting uplink data power and/or the up signalling power on Serving cell.Control station described herein comprises: macro base station, micro-base station, femto base station or relay station.
Above-mentioned different service cells, comprises main Serving cell and the auxiliary serving cell having activated, or any two Serving cells of having activated.Different service cells can belong to same carrier wave set or also can belong to different carrier group.
In a preferred embodiment, can also in this PHR information, carry the sign of this Serving cell, this sign is corresponding with PH information, the corresponding sign of PH information of each Serving cell, support to send under the scene of SRS and upstream data (or ascending control information) in different districts at UE simultaneously, in the time only having SRS to send in transmission SRS community, the sign of this Serving cell is used for identifying on current service cell without upstream data or ascending control information transmission.For example: if only there is SRS to send in certain Serving cell, sign is set to effectively (for example V=1), have again upstream data or ascending control information to send if the existing SRS in this Serving cell sends, sign is set to invalid (for example V=0).In the time that the existing SRS transmission in this Serving cell has again upstream data or ascending control information to send, the transmitting uplink data channel transmission power of calculating this pH value will be actual transmission power, but not estimated value.
Embodiment 2
The power reporting device of realizing above-described embodiment 1 method is positioned at UE, as shown in Figure 2, comprises PH information computing module 21 and PHR information reporting module 22, wherein:
This PH information computing module 21, for send respectively SRS and upstream data in current UE support on different service cells simultaneously, or current UE support while simultaneously sending respectively SRS and ascending control information on different service cells, adopts one of following formula to calculate the PH information of the Serving cell that sends SRS:
The transmitting uplink data channel transmission power that PH information=UE estimates on this Serving cell at the maximum transmit power-UE of the Serving cell of this transmission SRS;
The transmitted power of transmitting uplink data channel transmission power-SRS that PH information=UE estimates on this Serving cell at the maximum transmit power-UE of the Serving cell of this transmission SRS;
This PHR information reporting module 22 for reporting PHR information, is carried the PH information that this PH information computing module 21 calculates in described PHR information.
This PHR information reporting module 22 can, in the time that current UE sends respectively SRS and upstream data simultaneously on different service cells, report the PHR information of this UE to control station; Or, before current UE sends respectively SRS and upstream data simultaneously on different service cells, report the PHR information of this UE to control station; Or, in the time that current UE sends respectively SRS and ascending control information simultaneously on different service cells, report the PHR information of this UE to control station; Or, before current UE sends respectively SRS and ascending control information simultaneously on different service cells, report the PHR information of this UE to control station.
This PHR information reporting module 22 is also for carrying the sign of the Serving cell of this transmission SRS corresponding with PH information in described PHR information, in the time only having SRS to send in described transmission SRS community, the sign of this Serving cell is used for identifying on current service cell without upstream data or ascending control information transmission.
Below by application example, above-described embodiment method is illustrated, in the situation that not conflicting, the feature in this application example can combine mutually.
In following example take control station as base station the Poewr control method after example explanation adopts above-mentioned power report method.
Application example 1
This example is described UE in SCell1(auxiliary serving cell 1) the upper SRS that sends, in SCell2(auxiliary serving cell 2) the upper scene that sends PUSCH, as shown in Figure 3, comprise the following steps:
Step 101: in the time that UE judges that meeting PHR reports trigger condition, UE carries PHR information simultaneously in the upstream data of SCell2;
In this example, the trigger condition of PHR comprise following one of arbitrarily:
1) PHR forbids that timer (prohibitPHR-Timer) is overtime, and the variable quantity that reports with respect to last PHR of path loss to be greater than predetermined threshold dl-PathlossChange(unit be a decibel dB) time;
2) PHR cycle timer (periodicPHR-Timer) is overtime;
3) configuration of PHR functional entity or reshuffle;
4) some SCell are activated.
UE has triggered after PHR, can by the time have ascending resource to divide timing to send PHR again, i.e. the triggering of PHR not necessarily with the unit at the same time that is sent in of PHR because the priority ratio general data of PHR is high, can preferentially take ascending resource.
The PHR information of UE comprises PH information that SCell1 is corresponding and PH information corresponding to SCell2 and the sign of community in this example.Send the Warning Mark position V=1 that therefore pH value of SCell1 is corresponding without PUSCH because SCell1 is upper; Send PUSCH, the Warning Mark position V=0 that pH value of SCell2 is corresponding because SCell2 is upper.
In this example, the pH value that in the PHR that UE reports, SCell1 is corresponding can adopt above-mentioned formula (1) to calculate, and also can adopt above-mentioned formula (2) to calculate.
Step 102: base station receives the upstream data information that UE sends, obtains the power information that PHR carries;
Step 103:UE receives the power control information of base station feedback, adjusts or do not adjust transmitting uplink data power and/or the up signalling power on Serving cell.
If power control information equipment for indicating user is adjusted transmitting uplink data power and/or up signalling power on Serving cell, subscriber equipment is adjusted transmitting uplink data power and/or the up signalling power on Serving cell; If power control information equipment for indicating user is without adjusting transmitting uplink data power and/or the up signalling power on Serving cell or not comprising related power adjustment information, subscriber equipment is without adjusting existing transmitting uplink data power and/or up signalling power on Serving cell.
Application example 2
In this example, UE has a main Serving cell PCell1, and two auxiliary serving cell SCell1 and SCell2, as shown in Figure 4, comprises the following steps:
Step 201: in the time that UE judges that meeting PHR reports trigger condition, UE carries PHR information in the upstream data of PCell1;
In this example, the condition that triggers PHR is:
SCell1 and SCell2 send respectively SRS and upstream data (on PUSCH channel, sending data) before in same subframe to base station, or SCell1 and SCell2 send respectively SRS and ascending control information (transmission information on PUCCH) before to base station in same subframe.
UE judges in a frame subsequently or some frames the while is sent respectively to SRS and ascending control information (or upstream data) at two SCell, therefore in the upstream data of UE on PCell, carries PHR information.For example, UE will send SRS and upstream data to base station side respectively at SCell1 and SCell1 at subframe N, and at subframe N-2, in the upstream data that UE sends to base station at PCell1, just carry PHR information.
In the PHR information of UE, carry the PH information of SCell1 and SCell2; Send the Warning Mark position V=1 that pH value of SCell1 is corresponding without upstream data or ascending control information because current SCell1 is upper; Send the Warning Mark position V=1 that pH value of SCell2 is corresponding without upstream data or ascending control information because current SCell2 is upper.
In this example, in the PHR that UE reports, can adopt above-mentioned formula (1) to calculate by sending pH value corresponding to SCell1 of transmission SRS separately, also can adopt above-mentioned formula (2) to calculate.If adopt formula (2) to calculate, SRS transmitted power is wherein estimated value.
Step 202, step 203 are identical with example 1.
Application example 3
This example is described UE and on SCell1, is sent SRS, sends the scene of upstream data on SCell2, as shown in Figure 5, comprises the following steps:
Step 301: in the time that UE judges that meeting PHR reports trigger condition, UE carries PHR information simultaneously in upstream data;
In this example, the trigger condition of PHR is:
SCell1 and SCell2 send respectively SRS and upstream data simultaneously to base station, or while simultaneously sending respectively SRS and ascending control information to base station;
The PHR information of UE has comprised SCell1 and PH information corresponding to SCell2 and the sign of respective cell, sends the Warning Mark position V=1 that pH value of SCell1 is corresponding because SCell1 is upper without upstream data; Send upstream data, the flag bit V=0 that pH value of SCell2 is corresponding because SCell2 is upper.
In this example, the pH value that in the PHR that UE reports, SCell1 is corresponding can adopt above-mentioned formula (1) to calculate, and also can adopt above-mentioned formula (2) to calculate.
Step 302, step 303 are identical with example 1.
One of ordinary skill in the art will appreciate that all or part of step in said method can carry out instruction related hardware by program and complete, described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, the each module/unit in above-described embodiment can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (12)
1. the power report method in carrier aggregation system, comprising:
Subscriber equipment (UE) supports on different service cells, to send respectively interception reference signal (SRS) and upstream data simultaneously, or UE is while supporting simultaneously to send respectively SRS and ascending control information on different service cells, described UE adopts one of following formula to calculate power headroom (PH) information of the Serving cell that sends SRS:
The transmitting uplink data channel transmission power that described PH information=UE estimates on described Serving cell at the maximum transmit power-UE of the Serving cell of described transmission SRS;
The transmitted power of transmitting uplink data channel transmission power-SRS that described PH information=UE estimates on described Serving cell at the maximum transmit power-UE of the Serving cell of described transmission SRS;
UE reporting power margin report (PHR) information is carried described PH information in described PHR information.
2. the method for claim 1, is characterized in that:
In the time that UE supports to send respectively SRS and upstream data on different service cells simultaneously, described UE reports PHR information, comprising:
When described UE sends respectively SRS and upstream data simultaneously on different service cells, report the PHR information of this UE to control station; Or, before described UE sends respectively SRS and upstream data simultaneously on different service cells, report the PHR information of this UE to control station.
3. the method for claim 1, is characterized in that:
In the time that UE supports to send respectively SRS and ascending control information on different service cells simultaneously, described UE reports PHR information, comprising:
When described UE sends respectively SRS and ascending control information simultaneously on different service cells, report the PHR information of this UE to control station; Or, before described UE sends respectively SRS and ascending control information simultaneously on different service cells, report the PHR information of this UE to control station.
4. the method as described in claim 1 or 2 or 3, is characterized in that:
Described different service cells, comprises main Serving cell and the auxiliary serving cell having activated, or any two Serving cells of having activated.
5. method as claimed in claim 4, is characterized in that:
Described different Serving cell belongs to same carrier wave set or belongs to different carrier group.
6. the method for claim 1, is characterized in that:
Described method also comprises, in described PHR information, carry the sign of the described Serving cell corresponding with described PH information, in the time only having SRS to send in described transmission SRS community, the sign of described Serving cell is used for identifying on current service cell without upstream data or ascending control information transmission.
7. the power reporting device in carrier aggregation system, is positioned at subscriber equipment (UE), comprises power headroom (PH) information computing module and power headroom reporting (PHR) (PHR) information reporting module, wherein:
Described PH information computing module, for send respectively interception reference signal (SRS) and upstream data in current UE support on different service cells simultaneously, or current UE support while simultaneously sending respectively SRS and ascending control information on different service cells, adopts one of following formula to calculate the PH information of the Serving cell that sends SRS:
The transmitting uplink data channel transmission power that described PH information=UE estimates on described Serving cell at the maximum transmit power-UE of the Serving cell of described transmission SRS;
The transmitted power of transmitting uplink data channel transmission power-SRS that described PH information=UE estimates on described Serving cell at the maximum transmit power-UE of the Serving cell of described transmission SRS;
Described PHR information reporting module for reporting PHR information, is carried the PH information that described PH information computing module calculates in described PHR information.
8. device as claimed in claim 7, is characterized in that:
In the time that current UE support sends respectively SRS and upstream data simultaneously on different service cells, described PHR information reporting module reports PHR information, comprising:
Described PHR information reporting module, in the time that current UE sends respectively SRS and upstream data simultaneously on different service cells, reports the PHR information of this UE to control station; Or, before current UE sends respectively SRS and upstream data simultaneously on different service cells, report the PHR information of this UE to control station.
9. device as claimed in claim 7, is characterized in that:
In the time that current UE support sends respectively SRS and ascending control information simultaneously on different service cells, described PHR information reporting module reports PHR information, comprising:
Described PHR information reporting module, in the time that current UE sends respectively SRS and ascending control information simultaneously on different service cells, reports the PHR information of this UE to control station; Or, before current UE sends respectively SRS and ascending control information simultaneously on different service cells, report the PHR information of this UE to control station.
10. the device as described in claim 7 or 8 or 9, is characterized in that:
Described different service cells, comprises main Serving cell and the auxiliary serving cell having activated, or any two Serving cells of having activated.
11. devices as claimed in claim 10, is characterized in that:
Described different Serving cell belongs to same carrier wave set or belongs to different carrier group.
12. devices as claimed in claim 7, is characterized in that:
Described PHR information reporting module is also for carrying the sign of the described Serving cell corresponding with described PH information in described PHR information, in the time only having SRS to send in described transmission SRS community, the sign of described Serving cell is used for identifying on current service cell without upstream data or ascending control information transmission.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210436178.1A CN103813430A (en) | 2012-11-05 | 2012-11-05 | Power report method and device in carrier aggregation system |
| PCT/CN2013/083723 WO2014067359A1 (en) | 2012-11-05 | 2013-09-18 | Method and apparatus for reporting power in carrier aggregation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210436178.1A CN103813430A (en) | 2012-11-05 | 2012-11-05 | Power report method and device in carrier aggregation system |
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| CN103813430A true CN103813430A (en) | 2014-05-21 |
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| CN201210436178.1A Pending CN103813430A (en) | 2012-11-05 | 2012-11-05 | Power report method and device in carrier aggregation system |
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| CN (1) | CN103813430A (en) |
| WO (1) | WO2014067359A1 (en) |
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