CN101931992A - Method and terminal for realizing power headroom reporting - Google Patents
Method and terminal for realizing power headroom reporting Download PDFInfo
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Abstract
The invention discloses a method and a terminal for realizing power headroom reporting (PHR). In the method, user equipment (UE) which supports carrier aggregation technology determines one or more power headrooms (PH) for distributed component carriers and selects at least one component carrier in an uplink for PHR transmission. According to the scheme provided by the invention, clear description for specific implementation of PHR under a multi-carrier condition is provided, the development of the carrier aggregation technology can be promoted by combining the PHR in the carrier aggregation technology, and the broad application of multi-carrier technology can be promoted. Due to the PHR supporting the multi-carrier condition, the UE can perform PHR transmission for each component carrier, so that an evolved node base (eNB) can know more information on each component carrier on the side of the UE, the eNB or even a core network can conveniently control the UE, and the system performance can be improved. In addition, flexible various implementation modes are provided in the scheme of the invention, and a proper choice can be made according to the actual application condition, so that the adaptability of the overall scheme is enhanced.
Description
Technical field
The present invention relates to the communications field, be meant a kind of method and terminal that realizes power headroom reporting especially.
Background technology
3G (Third Generation) Moblie Long Term Evolution (LTE, Long Term Evolution) universal land radio access web (E-UTRAN of the evolution of system, Evolved Universal Terrestrial Radio Access Network) forms by base station (eNB), its wave point medium access control (MAC, MediaAccess Control) there is the functional entity of power headroom reporting (PHR, Power Headroom Reporting) in protocol layer.
PHR is meant user terminal (UE, User Equipment) with (the MAC CE of medium access control unit, MAC Control Element) mode reports the difference between Uplink Shared Channel (UL-SCH, the UpLink Share Channel) transmitting power of UE nominal maximum transmission power and estimation to eNB.
Mainly contain following several situation and trigger PHR:
1, PHR forbids that timer (prohibitPHR-Timer) is overtime, and the variable quantity of path loss is greater than setting numerical value (from last PHR);
2, PHR cycle timer (periodicPHR-Timer) is overtime;
3, the configuration of PHR functional entity or reshuffle;
After triggering PHR, UE carries out PHR and sends when the uplink transmission resource of supporting PHR is arranged.
The MAC CE form of PHR as shown in Figure 1, power headroom (PH, Power Headroom) bit field has been indicated the power headroom among the PHR, the length of PH bit field is 6 bits, in addition, also have the reservation position of two R bits, the acquiescence value of this reservation position is 0 in the prior art.
In order to satisfy the demand that growing big bandwidth high-speed mobile inserts, third generation partnership project (3GPP, Third Generation Partnership Projects) releases senior Long Term Evolution (LTE-Advanced, Long-Term Evolution Advanced) standard.LTE-Advanced adopts series of new techniques that frequency domain, spatial domain are expanded on the LTE basis, to reach purposes such as improving the availability of frequency spectrum, increase power system capacity.Wherein, carrier aggregation (CC, Component Carrier) technology can the two or more component carriers of polymerization, supporting wideer frequency band, as reach the spectrum aggregating of 100MHz.UE can receive on one or more component carriers simultaneously or send data, can be configured in descending/different numbers of up gathering and have the component carrier of different bandwidth.
Under the multicarrier situation, how to dispatch the uplink transmission resource of supporting PHR in a plurality of component carriers, and the PH that how to send each component carrier when triggering PHR on the component carrier, this is not provided clear and definite specific implementation in the prior art.Therefore, press for to provide how the dispatching uplink transfer resource carries out the implementation that PHR sends under the multicarrier situation at present.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and terminal that realizes power headroom reporting, realizes the PHR under the multicarrier situation.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that realizes power headroom reporting, user terminal UE supports carrier aggregation technology, this method comprises: UE determines one or more power headroom PH at the component carrier that is distributed, and is chosen in and carries out power headroom reporting PHR at least one component carrier of up link and send.
Described UE determines one or more PH at the component carrier that is distributed, and is specially: for the component carrier of distributing to UE, UE determines a PH at the one-component carrier wave; Perhaps, UE determines a PH at a plurality of component carriers; Perhaps, UE both determined a PH at the one-component carrier wave, also determined a PH at a plurality of component carriers.
Described for the component carrier of distributing to UE, UE determines a PH at the one-component carrier wave, is specially: each determines a PH to UE at each component carrier that is distributed respectively; Perhaps, described for the component carrier of distributing to UE, UE determines a PH at a plurality of component carriers, is specially: UE determines a PH at the whole component carriers that distributed; Perhaps, described a plurality of component carriers of determining a PH be distribute to UE, on frequency domain continuous a plurality of component carriers; Perhaps, a plurality of component carriers of a described definite PH are a plurality of component carriers of distributing in same emission filter bandwidth UE, that belong to UE.
The only corresponding one-component carrier wave of described PH, determined PH is: the average nominal maximum transmission power of each component carrier of UE and the UE difference between the Uplink Shared Channel UL-SCH transmitting power of estimating on this component carrier;
Perhaps, the only corresponding one-component carrier wave of described PH, determined PH is: the nominal maximum transmission power of UE and the UE difference between the Uplink Shared Channel UL-SCH transmitting power of estimating on this component carrier;
Perhaps, the corresponding a plurality of component carriers of PH, determined PH is:
The nominal maximum transmission power of UE and the UE difference between the UL-SCH transmitting power sum of estimating on each component carrier corresponding to PH; Or,
The nominal maximum transmission power of UE and the UE difference between the arithmetic mean of the UL-SCH transmitting power sum of estimating on each component carrier corresponding to PH; Or,
The nominal maximum transmission power of UE and the UE difference between the UL-SCH transmitting power of estimating on wherein any one component carrier corresponding to PH; Or,
The mean value of the nominal maximum transmission power of UE and the UE difference between the UL-SCH transmitting power sum of estimating on each component carrier corresponding to PH.
Carry out PHR on described at least one component carrier that is chosen in up link and send, be specially: be chosen at least one component carrier of the uplink transmission resource of supporting PHR and send PH, the PHR of the described PH correspondence of transmission comprises the PHR of triggering at least.
The component carrier of described transmission PH is: any component carrier that UE supports; Or the PHR component carrier that base station eNB disposed, described PHR component carrier is to be used for UE to carry out the component carrier that PHR sends; Further, the configuration of described PHR component carrier realizes to UE transmission dedicated signaling by eNB.
Carry out PHR on described at least one component carrier that is chosen in the uplink transmission resource of supporting PHR and send, comprising: when on the component carrier that triggers PHR, the uplink transmission resource of supporting PHR being arranged, select wherein at least one component carrier to carry out PHR and send; Perhaps, have when the uplink transmission resource of supporting PHR is arranged at least one component carrier, selecting wherein, at least one component carrier carries out the PHR transmission.
Select component carrier to carry out PHR when the uplink transmission resource of supporting PHR is arranged on the described important carrier wave and send, the described PHR that carries out sends and comprises: the component carrier index of the PH correspondence of transmission is set, sends described component carrier index and described PH on component carrier; And/or,
Select component carrier to carry out PHR when the uplink transmission resource of supporting PHR is arranged on the described important carrier wave and send, described selection component carrier carries out the PHR transmission and comprises: send a PH on the one-component carrier wave; Perhaps, sending on the one-component carrier wave a plurality of PH according to setting the combination PH that obtains after rule is organized; Perhaps, both sent a PH respectively by at least one component carrier, the combination PH that obtains after also a plurality of PH being organized according to the setting rule by at least one component carrier transmission, the described component carrier that sends a PH is different from the described component carrier that PH is made up in transmission; And/or,
Described selection component carrier carries out PHR and is sent as when selecting the one-component carrier wave to send a plurality of PH, and described transmission PH comprises: described each PH is organized resultant combination PH according to setting rule, the described combination PH of transmission on described component carrier.
Described setting rule: by the pre-configured UE that gives of eNB; Or send dedicated signaling by eNB to UE and offer UE; And/or described setting rule is: the queueing discipline of each PH of setting, or the queueing discipline of the PH of component carrier index and respective components carrier wave, or the queueing discipline of the PH of component carrier PHR sign and respective components carrier wave.
The value that is used to identify the Logic Channel Identifier LCID of the PHR under the described multicarrier situation is: the newly-installed not value in existing LCID span; Perhaps, keep the value of choosing the interval from existing LCID; Perhaps, the existing LCID value that is used for identifying PHR.
When using the existing LCID value that is used for identifying PHR to identify PHR under the described multicarrier situation, the described PHR that carries out further comprises before sending: eNB notice UE is current to be the PHR under the multicarrier situation; Perhaps, UE determines that according to the ability information of self PHR that carries out is the PHR under the multicarrier situation, and eNB determines that by the ability information of UE PHR that described UE carries out is the PHR under the multicarrier situation.
A kind of terminal that realizes power headroom reporting, described terminal is supported carrier aggregation technology, this terminal comprises: determining unit and report the unit, wherein, described determining unit is used for determining one or more PH at the component carrier of distributing to UE; Carrying out PHR on described at least one component carrier that reports the unit to be used to be chosen in up link sends.
The described unit that reports specifically is used for: be chosen at least one component carrier of the uplink transmission resource of supporting PHR and send PH, the PHR of the described PH correspondence of transmission comprises the PHR of triggering at least.
According to scheme provided by the invention, the specific implementation of the PHR under the multicarrier situation provided clearly described, in carrier aggregation technology, combine PHR, can promote the development of carrier aggregation technology, promote the extensive use of multi-transceiver technology.Owing to support the PHR under the multicarrier situation, UE can carry out PHR at each component carrier and send, and makes eNB can understand the more information of each component carrier of UE side, makes things convenient for eNB even core net that UE is controlled, and helps improving systematic function.
In addition, provide flexile implementation among the present invention program, can suitably select, strengthened the adaptability of overall plan according to practical situations.
Description of drawings
Fig. 1 is the MAC CE form schematic diagram of existing PHR;
Fig. 2 is the MAC CE form schematic diagram of PHR in the instantiation two of the present invention;
Fig. 3 is the MAC CE form schematic diagram of PHR in the instantiation three of the present invention;
Fig. 4 is the MAC CE form schematic diagram of PHR in the instantiation four of the present invention;
Fig. 5 is the MAC CE form schematic diagram of PHR in the instantiation five of the present invention;
Fig. 6 is the MAC CE form schematic diagram of PHR in the instantiation six of the present invention;
Fig. 7 is the MAC CE form schematic diagram of PHR in the instantiation seven of the present invention;
Fig. 8 is the MAC CE form schematic diagram of PHR in the instantiation eight of the present invention;
Fig. 9 is for realizing the structural representation of the terminal of PHR among the present invention.
Embodiment
Among the present invention, UE determines one or more PH at the component carrier that is distributed, and is chosen in and carries out PHR at least one component carrier of up link and send.
The above UE determines that at the component carrier that is distributed one or more PH can be that UE determines one or more PH at least one component carrier that is distributed, and specific implementation is:
When only distributing to UE one-component carrier wave, UE determines a PH at this component carrier;
When distributing to many component carriers of UE, for a plurality of component carriers of distributing to UE, UE determines a PH at one of them component carrier, at this moment, the only corresponding one-component carrier wave of this PH, UE can determine the PH of one or more corresponding one-component carrier waves; Perhaps, determine a PH at a plurality of component carriers wherein, at this moment, the corresponding a plurality of component carriers of this PH, any one component carrier in these a plurality of component carriers is also corresponding with this PH, UE can determine the PH of a plurality of component carriers of one or more correspondences, and a plurality of component carriers of each PH correspondence are can part identical or inequality entirely; Perhaps, both determined a PH, also determined a PH at a plurality of component carriers at the one-component carrier wave, UE can determine the PH of one or more corresponding one-component carrier waves and the PH of a plurality of component carriers of one or more correspondences, and a plurality of component carriers of each PH correspondence are can part identical or inequality entirely.UE can determine a PH respectively at each component carrier that is distributed, and promptly each determines a PH to UE at each component carrier that is distributed respectively; Also can determine a PH at the whole component carriers that distributed.
Preferably, if it is continuous on frequency domain to distribute to a plurality of component carriers of UE, then UE can determine a PH at the continuous a plurality of component carriers on frequency domain that distributed; Perhaps, UE can determine a PH at a plurality of component carriers of distributing in same emission filter bandwidth UE, that belong to UE.
When determining PH, specifically can comprise by physical layer read to determine PH.The quantity difference of the component carrier of PH correspondence, its specific implementation also can be different, will be described respectively below.
During the only corresponding one-component carrier wave of PH, determined PH can be: the average nominal maximum transmission power of each component carrier of UE and the UE difference between the UL-SCH transmitting power of estimating on this component carrier, wherein, the average nominal maximum transmission power of each component carrier of UE can be the quantity of the nominal maximum transmission power of UE divided by the component carrier of distributing to UE; Perhaps, the nominal maximum transmission power of UE and the UE difference between the Uplink Shared Channel UL-SCH transmitting power of estimating on this component carrier.
During the corresponding a plurality of component carrier of PH, determined PH can be: the nominal maximum transmission power of UE and the UE difference between the UL-SCH transmitting power sum of estimating on each component carrier corresponding to PH; Perhaps, the nominal maximum transmission power of UE and the UE difference between the arithmetic mean of the UL-SCH transmitting power sum of estimating on each component carrier corresponding to PH; Perhaps, the nominal maximum transmission power of UE and the UE difference between the UL-SCH transmitting power of estimating on wherein any one component carrier corresponding to PH; Perhaps, the mean value of the nominal maximum transmission power of UE and the UE difference between the UL-SCH transmitting power sum of estimating on each component carrier corresponding to PH.
A plurality of component carriers of PH correspondence are that determined PH can be: the nominal maximum transmission power of UE and the UE difference between the UL-SCH transmitting power sum of estimating on each component carrier when distributing to the whole component carrier of UE; Perhaps, the nominal maximum transmission power of UE and the UE difference between the arithmetic mean of the UL-SCH transmitting power sum of estimating on each component carrier; Perhaps, the nominal maximum transmission power of UE and the UE difference between the UL-SCH transmitting power of estimating on any one-component carrier wave; Perhaps, the mean value of the nominal maximum transmission power of UE and the UE difference between the UL-SCH transmitting power sum of estimating on each component carrier, soon the nominal maximum transmission power of UE and the difference of UE between the UL-SCH transmitting power sum of estimating on each component carrier are divided by the quantity of the component carrier of distributing to UE.
The above is chosen in carries out PHR and send and be meant at least one component carrier of up link: be chosen at least one component carrier of the uplink transmission resource of supporting PHR and send PH, the PHR of the PH correspondence of transmission comprises the PHR of triggering at least.Owing to triggered PHR on the component carrier, just can make UE on the component carrier that the uplink transmission resource of supporting PHR is arranged, send PH, and the PH that sends corresponding one or more component carriers, like this, the PH correspondence that sends the PHR of the component carrier of this PH correspondence, therefore, in the implementation of the present invention, the PHR of the PH correspondence of transmission comprises the PHR of triggering at least.If triggered PHR on the one-component carrier wave, then this component carrier may also be referred to as the component carrier that triggers PHR.
The component carrier that sends PH can be any component carrier that UE supports, promptly distributes to any component carrier of UE; Also can be the PHR component carrier that eNB disposes, the UE that is used for that promptly eNB disposes in distributing to the component carrier of UE carries out the component carrier that PHR sends, and the configuration of PHR component carrier can send dedicated signaling to UE by eNB and realize.
Be chosen in and carry out PHR at least one component carrier of the uplink transmission resource of supporting PHR and send, specific implementation comprises:
Can be when only on the component carrier that triggers PHR, the uplink transmission resource of supporting PHR being arranged, just selecting wherein, at least one component carrier carries out the PHR transmission, the PH that sends on the component carrier can corresponding one-component carrier wave, and at this moment, the PHR of the PH correspondence of transmission is the PHR of triggering; The PH that sends on the component carrier also can corresponding a plurality of component carriers, at this moment, the PHR of the PH correspondence that sends comprises the PHR of triggering at least, the PHR of the PH correspondence that sends may be the PHR of triggering, the PHR of the PH correspondence that sends also may not only comprise the PHR of triggering, also comprises PHR the component carrier that removes triggering PHR in each component carrier of PH correspondence, other component carriers.
Have the uplink transmission resource of supporting PHR is arranged at least one component carrier as long as also can be, at least one component carrier carries out the PHR transmission with regard to selecting wherein, even can be to select to have whole component carriers of the uplink transmission resource of supporting PHR to carry out the PHR transmission, at this moment, no matter UE determines a PH at the one-component carrier wave, still determine a PH at a plurality of component carriers, the component carrier that carries out the PHR transmission all both may be the component carrier of PH correspondence, also may be the component carrier different component carrier corresponding, as long as the uplink transmission resource of supporting PHR is arranged on the respective component carrier wave with PH.At this moment, the PHR of the PH correspondence of transmission comprises the PHR of triggering at least.
According to above description as seen, when only on the component carrier that triggers PHR, the uplink transmission resource of supporting PHR being arranged, just selecting wherein, at least one component carrier carries out the PHR transmission, in this case, only need to send an independent PH on the one-component carrier wave, because PH can be the PH of corresponding a plurality of component carriers, therefore, this PH may send on a plurality of component carriers.As long as have the uplink transmission resource of supporting PHR arranged at least one component carrier, at least one component carrier carries out the PHR transmission with regard to selecting wherein, in this case, owing to and do not require between the component carrier that the sends PH component carrier corresponding to have certain relation with this PH, carry out the PHR transmission as long as make full use of each component carrier of the uplink transmission resource of supporting PHR, therefore, the PH that sends on the one-component carrier wave no longer only limits to an independent PH, and can be a plurality of PH.
As long as the component carrier of the uplink transmission resource of supporting PHR is arranged, just carrying out PHR sends, owing to send this moment between the component carrier of the PH component carrier corresponding and do not have fixing corresponding relation with this PH, therefore, even send an independent PH on the one-component carrier wave, also need to provide the component carrier of this PH correspondence, can identify by the component carrier index is set, how the component carrier index is set is to determine that UE and eNB both sides all know.If UE determines a PH at the one-component carrier wave, when sending this PH, the index of component carrier that can this PH correspondence is set to corresponding component carrier index, sends index and this PH of the component carrier of this PH correspondence on component carrier; If UE determines a PH at a plurality of component carriers, when sending this PH, the component carrier index of this PH correspondence also need be set, on component carrier, send component carrier index and this PH that is provided with then, at this moment, this component carrier index can be the index of one of them component carrier of PH correspondence, also can be the irrelevant numerical value of index of each component carrier corresponding with PH.
When on the one-component carrier wave, sending a plurality of PH, each PH can be organized according to setting rule, obtain making up PH, on this component carrier, send this combination PH then.The described rule of setting is mainly used to determine organizational form when a plurality of PH send on the one-component carrier wave, promptly how to organize a plurality of PH to obtain making up PH, can be the queueing discipline of each PH of setting, or the queueing discipline of the PH of component carrier index and respective components carrier wave, or the queueing discipline of the PH of component carrier PHR sign and respective components carrier wave, or the like.Setting rule can also can be sent dedicated signaling to UE by eNB and be offered UE by the pre-configured UE of giving of eNB.Organize resulting combination PH on the one-component carrier wave, to send according to setting rule each PH, can save the control expense of MAC data.
As long as have the uplink transmission resource of supporting PHR arranged at least one component carrier, at least one component carrier carries out the PHR transmission with regard to selecting wherein, in this case, when need sending a plurality of PH, can one or more independent PH be scattered on the part component carrier and send, each component carrier in this part component carrier only sends an independent PH; Perhaps, send a plurality of PH according to setting the combination PH that obtains after rule is organized, be about to a plurality of PH and concentrate and send according to setting the combination PH that obtains after rule is organized by at least one component carrier; Perhaps, both sent a PH respectively by at least one component carrier, also send a plurality of PH according to setting the combination PH that obtains after rule is organized by at least one component carrier, the component carrier that sends a PH is inequality with the component carrier that sends combination PH, that is to say, only send an independent PH on each component carrier in the part component carrier, send on each component carrier in another part component carrier a plurality of PH according to setting the combination PH that obtains after rule is organized.The transmission form of PH on component carrier can be selected flexibly, as long as guarantee to finish whole PHR of triggering.
In the prior art, comprise Logic Channel Identifier (LCID in the MAC head, Logical Channel ID) field, the LCID field is used to identify MAC service data unit (SDU, Service Data Unit) type or the filling bit of pairing logic channel or MAC CE, filling bit is used for the filling of Medium Access Control (MAC) Protocol Data Unit (PDU, Protocol Data Unit).LCID length is 5 bits, binary span from 0 to 11111.Wherein, the reservation interval of LCID is shown [01011-11001] with binary form.Especially, when the LCID value was binary number 11010, identifying this MAC CE was PHR.
Like this, in the present invention program's the specific implementation, in MAC PDU, can to identify MAC CE be PHR under the multicarrier situation by introduce new value for LCID, this value can keep the interval from existing LCID be chosen; Also can be newly-installed, promptly be set to not other numerical value in existing LCID span.In addition, also can still use the existing LCID value of MAC CE that be used for identifying as PHR, but the MAC CE of this value sign is the PHR under the multicarrier situation, in this case, it is PHR under the multicarrier situation that eNB need pass through radio network controller (RNC, Radio Network Controller) message informing UE current; Perhaps, UE determines that according to the ability information of self PHR that carries out is the PHR under the multicarrier situation, eNB then determines that by the ability information of UE PHR that corresponding UE is carried out is the PHR under the multicarrier situation, and the ability information of UE can offer eNB when UE and eNB connect.
For the specific implementation that makes the present invention program is more clear, be described further below by several instantiations.Below in each instantiation, UE and eNB all support carrier aggregation technology, adopt Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplex) pattern, the maximum uplink bandwidth of supporting is 100MHz, is 5 times of the maximum uplink bandwidth supported of the system of LTERelease 8 standards.
Instantiation one
UE is operated on 4 component carriers, and promptly UE is assigned to 4 component carriers, is respectively component carrier 0, component carrier 1, component carrier 2 and component carrier 3.All triggered PHR on component carrier 0, component carrier 1, component carrier 2 and the component carrier 3, and the uplink transmission resource of supporting PHR has all been arranged on each component carrier.
If UE determines a PH respectively at each component carrier that is distributed, i.e. the only corresponding one-component carrier wave of PH, then determined each PH is: PH
i=P
Max/ 4-P
i, wherein, the i value is 0,1,2,3; PH
iFor at the determined PH of component carrier i; P
MaxBe the maximum transmission power of UE nominal, be distributed in 4 component carriers equably, accordingly, P
Max/ 4 is the average nominal maximum transmission power of UE on each component carrier; P
iThe UL-SCH transmitting power of on component carrier i, estimating for UE.In addition, determined each PH also can be PH
i=P
Max-P
i
When UE carried out the PHR transmission, each PH can send by the component carrier of PH correspondence, promptly select component carrier 0 to send PH
0, component carrier 1 sends PH
1, component carrier 2 sends PH
2, component carrier 3 sends PH
3Also can select the one-component carrier wave, send each PH according to setting the combination PH that obtains after rule is organized as component carrier 3; Also can select component carrier 3 to send with PH
1And PH
2According to setting the combination PH that obtains after rule is organized, select component carrier 0 to send PH
0, component carrier 1 sends PH
3Can also select component carrier 0 to send with PH
1, PH
2And PH
3According to setting the combination PH that obtains after rule is organized, or the like, exemplify no longer one by one at this.
If the PHR of UE determines a PH at 4 component carriers that distributed, i.e. only corresponding 4 component carriers of this PH, then determined this PH is: PH=P
Max-(P
0+ P
1+ P
2+ P
3)=P
Max-P
0-P
1-P
2-P
3Perhaps, PH=P
Max-(P
0+ P
1+ P
2+ P
3)/4; Perhaps, PH=P
Max-rand (P
0, P
1, P
2, P
3); Perhaps, pH=(P
Max-(P
0+ P
1+ P
2+ P
3))/4=(P
Max-P
0-P
1-P
2-P
3)/4.Wherein, P
MaxMaximum transmission power for the UE nominal; P
0, P
1, P
2, P
3Be respectively the UL-SCH transmitting power that UE estimates on component carrier 0, component carrier 1, component carrier 2, component carrier 3; Rand (P
0, P
1, P
2, P
3) represent arbitrarily at P
0, P
1, P
2, P
3One of middle selection.
When UE carries out the PHR transmission, can select the one-component carrier wave, send PH as component carrier 1; Also select a plurality of component carriers, send PH as component carrier 0 and component carrier 2, or the like.
Instantiation two
UE is operated on 4 component carriers, and promptly UE is assigned to 4 component carriers, is respectively component carrier 0, component carrier 1, component carrier 2 and component carrier 3.Trigger PHR on the component carrier 1, do not triggered PHR on other component carriers.
Moment t1, the uplink transmission resource of supporting PHR is arranged on component carrier 2 and the component carrier 3, because when UE only has the uplink transmission resource of supporting PHR on the component carrier of PH correspondence, just selecting wherein, at least one component carrier carries out the PHR transmission, therefore, can't select this moment component carrier to send the PH of component carrier 1 correspondence.
Moment t
2, t
2＞t
1, the ascending resource of supporting PHR is arranged on the component carrier 1, at this moment, UE determines PH, is PH at component carrier 1
1, select component carrier 1 send component carrier 1 correspondence PH, be PH
1, the form of MAC CE as shown in Figure 2 in this example.Because UE only determines PH at component carrier 1
1, and require to send PH
1Component carrier be component carrier 1, like this, the PH that sends on the component carrier 1 must be corresponding with component carrier 1, therefore, need not other information and identify the PH that sends on the component carrier 1 this moment
1Pairing component carrier.Current PHR is the PHR on the component carrier 1, and is identical with the PHR that triggers.
Instantiation three
UE is operated on 8 component carriers, and promptly UE is assigned to 8 component carriers, is respectively component carrier 0 to component carrier 7.Trigger PHR on the component carrier 0, do not triggered PHR on other component carriers.
Current time has only the uplink transmission resource of supporting PHR is arranged on the component carrier 0, as long as because UE has the uplink transmission resource of supporting PHR is arranged at least one component carrier, at least one component carrier carries out the PHR transmission with regard to selecting wherein, therefore, at this moment, UE determines PH, is PH at component carrier 0
0, select component carrier 0 send component carrier 0 correspondence PH, be PH
0, the form of MAC CE as shown in Figure 3 in this example.Owing to send between the component carrier of the PH component carrier corresponding and do not have fixing corresponding relation with this PH, therefore, need identify the pairing component carrier of PH of transmission by supplementary, as the component carrier index, to show the component carrier of current PHR correspondence, component carrier index in this example is 3 bits, and Binary Zero 00 as shown in Figure 3 is used for representing component carrier index 0.Current PHR is the PHR on the component carrier 0, and is identical with the PHR that triggers.
In this example, in MAC PDU, to identify MAC CE be PHR under the multicarrier situation by introduce new value for LCID, and this value keeps the interval from existing LCID to be chosen.
Instantiation four
UE is operated on 5 component carriers, and promptly UE is assigned to 5 component carriers, is respectively component carrier 0 to component carrier 4, and wherein, component carrier 1 is adjacent on frequency domain with component carrier 4.
In view of component carrier adjacent on the frequency domain 1 and component carrier 4, UE will determine a PH at component carrier 1 and component carrier 4 in this example, and this PH has only the component carrier index of a correspondence, can be 1, also can be 4, can also be other and 0 to 4 incoherent natural number, is 1 in this example.
Component carrier 0 and component carrier 3 are PHR component carriers that eNB disposes, and allow to send on component carrier 0 and/or the component carrier 3 PH of corresponding other component carriers.The configuration of PHR component carrier can send dedicated signaling to UE by eNB and realize.
Trigger PHR on the component carrier 1, also triggered PHR on the component carrier 2, do not triggered PHR on other component carriers.Current time, the uplink transmission resource of supporting PHR is arranged on component carrier 0, the component carrier 3, owing to allow to send on component carrier 0 and/or the component carrier 3 PH of corresponding other component carriers, therefore, at this moment, UE determines PH, is PH at component carrier 1 and component carrier 4
1, select component carrier 0 send respective components carrier wave 1 PH, be PH
1, UE determines PH, is PH at component carrier 2
2, select component carrier 3 send respective components carrier waves 2 PH, be PH
2, in this example the form of MAC CE as shown in Figure 4, wherein, two binary component carrier index 1 expression PH
1Corresponding to component carrier 1 and component carrier 4, component carrier index 2 expression PH
2Only corresponding to component carrier 2, current PHR correspondence be PHR on component carrier 1, component carrier 4 and the component carrier 2, different with the PHR that triggers, the PHR of the PH correspondence of transmission comprises the PHR of triggering.
In this example, in MAC PDU, still use the existing LCID value of MAC CE as PHR that be used for identifying, the MAC CE of this value sign is the PHR under the multicarrier situation.UE determines that according to the ability information of self or by the RNC message of eNB the PHR that carries out is the PHR under the multicarrier situation.
Instantiation five
UE is operated on 4 component carriers, and promptly UE is assigned to 4 component carriers, is respectively component carrier 0, component carrier 1, component carrier 2 and component carrier 3, and these 4 component carriers also are the component carriers that UE supports.Trigger PHR respectively on component carrier 1, the component carrier 2, do not triggered PHR on other component carriers.
Current time has the uplink transmission resource of supporting PHR on component carrier 0, the component carrier 3.As long as because UE has the uplink transmission resource of supporting PHR is arranged at least one component carrier, at least one component carrier carries out the PHR transmission with regard to selecting wherein, and therefore, at this moment, UE determines a PH, is PH at component carrier 1
1, determine a PH, be PH at component carrier 2
2, with PH
1And PH
2After organizing, rule obtains making up PH according to setting, select component carrier 0 or component carrier 3 to send the PH of component carrier 1 correspondence and the PH of component carrier 2 correspondences, promptly on component carrier 0 or component carrier 3, send combination PH, in this example the form of MAC CE as shown in Figure 5, the setting rule in this example is with PH
1And PH
2Sequence arrangement.Current PHR correspondence be PHR on component carrier 1 and the component carrier 2, identical with the PHR that triggers.
Owing to send between the component carrier of the PH component carrier corresponding and do not have fixing corresponding relation with this PH, therefore, need be by setting the pairing component carrier of PH that comprises supplementary in the rule, sends as component carrier PHR mark for marking, to show the component carrier of current PHR correspondence, component carrier PHR in this example is designated 4 bits, the pairing component carrier of PH of representing current transmission successively by 0,1 value of each bit can be saved the control expense of MAC data like this.Use the current PH that does not send the respective components carrier wave of 0 expression in this example, using the PH of the current transmission of 1 expression is the PH of respective components carrier wave, and opposite value is represented also to be fine.Set rule and comprise that also each bit is corresponding from low paramount order with each component carrier from front to back successively, and by the corresponding PH of the sequence arrangement of each component carrier.
In addition, also can select component carrier 0 and component carrier 3 to send the PH of component carrier 1 correspondence and the PH of component carrier 2 correspondences simultaneously, the form of corresponding MAC CE still as shown in Figure 5 on each component carrier.
Instantiation six
UE is operated on 8 component carriers, and promptly UE is assigned to 8 component carriers, is respectively component carrier 0 to component carrier 7.Trigger PHR on the component carrier 4, do not triggered PHR on other component carriers.
Current time, have only the uplink transmission resource of supporting PHR is arranged on the component carrier 0, as long as the uplink transmission resource of supporting PHR is arranged at least one component carrier because UE has, at least one component carrier carries out the PHR transmission with regard to selecting wherein, therefore, at this moment, UE selects to report whole PH, determine a PH respectively at each component carrier that is distributed, promptly determine a PH, be PH at component carrier 0
0, determine a PH, be PH at component carrier 1
1... determine a PH, be PH at component carrier 7
7UE sends the PH of each component carrier correspondence by component carrier 0, in this example determined a plurality of PH are organized and obtain making up PH according to setting rule, on component carrier 0, send this combination PH then, this sets rule for pressing fixing each PH of sequential organization, as the sequence arrangement correspondence PH by each component carrier, the form of MAC CE as shown in Figure 6.Current PHR correspondence be PHR on each component carrier, different with the PHR that triggers, the PHR of the PH correspondence of transmission comprises the PHR of triggering.
Setting rule can be that eNB is pre-configured.Set rule and also can just arrange corresponding PH, as pressing the corresponding PH of each component carrier frequency domain sequence arrangement from low to high by frequency band by each component carrier.
In this example, in MAC PDU, to identify MAC CE be PHR under the multicarrier situation by introduce new value for LCID, and this value is newly-installed, promptly is set to not other numerical value in existing LCID span.
Instantiation seven
UE is operated on 8 component carriers, and promptly UE is assigned to 8 component carriers, is respectively component carrier 0 to component carrier 7.Trigger PHR respectively on component carrier 1, the component carrier 2, do not triggered PHR on other component carriers.
Current time has the uplink transmission resource of supporting PHR on component carrier 0, the component carrier 7.As long as because UE has the uplink transmission resource of supporting PHR is arranged at least one component carrier, at least one component carrier carries out the PHR transmission with regard to selecting wherein, and therefore, UE determined a PH, was PH at component carrier 1 this moment
1, determine a PH, be PH at component carrier 2
2, select component carrier 0 or component carrier 7 to carry out PHR and send, in this example with PH
1And PH
2After organizing, rule obtains making up PH according to setting, set the PH pairing component carrier of rule for sending by supplementary, as component carrier PHR mark for marking, to show the component carrier of current PHR correspondence, and by the corresponding PH of the sequence arrangement of each component carrier, send this combination PH then on component carrier 0 or component carrier 7, the form of MAC CE as shown in Figure 7.Current PHR correspondence be PHR on component carrier 1 and the component carrier 2, identical with the PHR that triggers.
Do not have fixing corresponding relation owing to send between the component carrier of the PH component carrier corresponding, therefore, need comprise the pairing component carrier of PH that supplementary identifies transmission in the rule by setting with this PH.Component carrier PHR in this example is designated 8 bits, each bit is corresponding from low paramount order with each component carrier from front to back successively, the pairing component carrier of PH of representing current transmission successively by 0,1 value of each bit can be saved the control expense of MAC data like this.Use the current PH that does not send the respective components carrier wave of 0 expression in this example, using the PH of the current transmission of 1 expression is the PH of respective components carrier wave, and opposite value is represented also to be fine.
In this example, in MAC PDU, to identify MAC CE be PHR under the multicarrier situation by introduce new value for LCID, and this value keeps the interval from existing LCID to be chosen.
Instantiation eight
UE is operated on 4 component carriers, and promptly UE is assigned to 4 component carriers, is respectively component carrier 0, component carrier 1, component carrier 2 and component carrier 3, is 4 the interior component carriers of same emission filter bandwidth that belong to UE.Trigger PHR on the component carrier 1, do not triggered PHR on other component carriers.
As long as the uplink transmission resource of supporting PHR is arranged at least one component carrier because UE has, at least one component carrier carries out the PHR transmission with regard to selecting wherein, therefore, when on any carrier wave of UE work the uplink transmission resource of supporting PHR being arranged, as the uplink transmission resource of supporting PHR is arranged on the component carrier 2, then UE determines a PH at the whole component carriers that distributed, and is specific as follows: PH=P
Max-P
0-P
1-P
2-P
3, wherein, P
MaxMaximum transmission power for the UE nominal; P
0, P
1, P
2, P
3Be respectively the UL-SCH transmitting power that UE estimates on component carrier 0, component carrier 1, component carrier 2, component carrier 3.UE selects component carrier 2 to send PH, and the form of MAC CE as shown in Figure 8 in this example.
Because UE determines a PH at the whole component carriers that distributed, like this, the PH that sends on the component carrier must be corresponding with whole component carriers, and therefore, need not other information and identify the pairing component carrier of PH that sends on the component carrier 2 this moment.Current PHR correspondence be PHR on each component carrier, different with the PHR that triggers, the PHR of the PH correspondence of transmission comprises the PHR of triggering.
Fig. 9 is for realizing the structural representation of the terminal of PHR among the present invention, and as shown in Figure 9, this terminal is supported carrier aggregation technology, comprises at least: determining unit and report the unit, and wherein, determining unit is used for determining one or more PH at the component carrier of distributing to UE; Report the unit to be used to be chosen in to carry out PHR at least one component carrier of up link and send.
Report the unit specifically to be used to be chosen at least one component carrier of the uplink transmission resource of supporting PHR and send PH, the PHR of the described PH correspondence of transmission comprises the PHR of triggering at least.
The specific implementation of each inside, unit and the description of front are identical, do not repeat them here.
The triggering of above-described PHR can be to trigger PHR according to the PHR trigger event of setting at present, as three kinds of situations mentioning in the background technology; Also can be that PHR trigger event according to new settings triggers PHR, the PHR trigger event of new settings can be pre-configured by eNB.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (13)
1. method that realizes power headroom reporting, user terminal UE supports carrier aggregation technology, it is characterized in that, this method comprises:
UE determines one or more power headroom PH at the component carrier that is distributed, and is chosen in and carries out power headroom reporting PHR at least one component carrier of up link and send.
2. method according to claim 1 is characterized in that, described UE determines one or more PH at the component carrier that is distributed, and is specially: for the component carrier of distributing to UE,
UE determines a PH at the one-component carrier wave; Perhaps,
UE determines a PH at a plurality of component carriers; Perhaps,
UE both determined a PH at the one-component carrier wave, also determined a PH at a plurality of component carriers.
3. method according to claim 2 is characterized in that,
Described for the component carrier of distributing to UE, UE determines a PH at the one-component carrier wave, is specially: each determines a PH to UE at each component carrier that is distributed respectively; Perhaps,
Described for the component carrier of distributing to UE, UE determines a PH at a plurality of component carriers, is specially: UE determines a PH at the whole component carriers that distributed; Perhaps,
Described a plurality of component carriers of determining a PH be distribute to UE, on frequency domain continuous a plurality of component carriers; Perhaps,
A plurality of component carriers of a described definite PH are a plurality of component carriers of distributing in same emission filter bandwidth UE, that belong to UE.
4. method according to claim 2 is characterized in that,
The only corresponding one-component carrier wave of described PH, determined PH is: the average nominal maximum transmission power of each component carrier of UE and the UE difference between the Uplink Shared Channel UL-SCH transmitting power of estimating on this component carrier;
Perhaps, the only corresponding one-component carrier wave of described PH, determined PH is: the nominal maximum transmission power of UE and the UE difference between the Uplink Shared Channel UL-SCH transmitting power of estimating on this component carrier;
Perhaps, the corresponding a plurality of component carriers of PH, determined PH is:
The nominal maximum transmission power of UE and the UE difference between the UL-SCH transmitting power sum of estimating on each component carrier corresponding to PH; Or,
The nominal maximum transmission power of UE and the UE difference between the arithmetic mean of the UL-SCH transmitting power sum of estimating on each component carrier corresponding to PH; Or,
The nominal maximum transmission power of UE and the UE difference between the UL-SCH transmitting power of estimating on wherein any one component carrier corresponding to PH; Or,
The mean value of the nominal maximum transmission power of UE and the UE difference between the UL-SCH transmitting power sum of estimating on each component carrier corresponding to PH.
5. method according to claim 1, it is characterized in that, carrying out PHR on described at least one component carrier that is chosen in up link sends, be specially: be chosen at least one component carrier of the uplink transmission resource of supporting PHR and send PH, the PHR of the described PH correspondence of transmission comprises the PHR of triggering at least.
6. method according to claim 5 is characterized in that,
The component carrier of described transmission PH is: any component carrier that UE supports; Or the PHR component carrier that base station eNB disposed, described PHR component carrier is to be used for UE to carry out the component carrier that PHR sends;
Further, the configuration of described PHR component carrier realizes to UE transmission dedicated signaling by eNB.
7. method according to claim 5 is characterized in that, carries out PHR on described at least one component carrier that is chosen in the uplink transmission resource of supporting PHR and sends, and comprising:
When on the component carrier that triggers PHR the uplink transmission resource of supporting PHR being arranged, selecting wherein, at least one component carrier carries out the PHR transmission; Perhaps,
Have when the uplink transmission resource of supporting PHR is arranged at least one component carrier, selecting wherein, at least one component carrier carries out the PHR transmission.
8. method according to claim 7 is characterized in that,
Select component carrier to carry out PHR when the uplink transmission resource of supporting PHR is arranged on the described important carrier wave and send, the described PHR that carries out sends and comprises: the component carrier index of the PH correspondence of transmission is set, sends described component carrier index and described PH on component carrier; And/or,
Select component carrier to carry out PHR when the uplink transmission resource of supporting PHR is arranged on the described important carrier wave and send, described selection component carrier carries out the PHR transmission and comprises: send a PH on the one-component carrier wave; Perhaps, sending on the one-component carrier wave a plurality of PH according to setting the combination PH that obtains after rule is organized; Perhaps, both sent a PH respectively by at least one component carrier, the combination PH that obtains after also a plurality of PH being organized according to the setting rule by at least one component carrier transmission, the described component carrier that sends a PH is different from the described component carrier that PH is made up in transmission; And/or,
Described selection component carrier carries out PHR and is sent as when selecting the one-component carrier wave to send a plurality of PH, and described transmission PH comprises: described each PH is organized resultant combination PH according to setting rule, the described combination PH of transmission on described component carrier.
9. method according to claim 8 is characterized in that,
Described setting rule: by the pre-configured UE that gives of eNB; Or send dedicated signaling by eNB to UE and offer UE; And/or,
Described setting rule is: the queueing discipline of each PH of setting, or the queueing discipline of the PH of component carrier index and respective components carrier wave, or the queueing discipline of the PH of component carrier PHR sign and respective components carrier wave.
10. according to the arbitrary described method of claim 1 to 9, it is characterized in that the value that is used to identify the Logic Channel Identifier LCID of the PHR under the described multicarrier situation is:
The newly-installed not value in existing LCID span; Perhaps,
Keep the value of choosing the interval from existing LCID; Perhaps,
The existing LCID value that is used for identifying PHR.
11. method according to claim 10 is characterized in that, when using the existing LCID value that is used for identifying PHR to identify PHR under the described multicarrier situation, the described PHR that carries out further comprises before sending:
ENB notice UE is current to be PHR under the multicarrier situation; Perhaps,
UE determines that according to the ability information of self PHR that carries out is the PHR under the multicarrier situation, and eNB determines that by the ability information of UE PHR that described UE carries out is the PHR under the multicarrier situation.
12. a terminal that realizes power headroom reporting, described terminal is supported carrier aggregation technology, it is characterized in that this terminal comprises: determining unit and report the unit, wherein,
Described determining unit is used for determining one or more PH at the component carrier of distributing to UE;
Carrying out PHR on described at least one component carrier that reports the unit to be used to be chosen in up link sends.
13. terminal according to claim 12 is characterized in that, the described unit that reports specifically is used for: be chosen at least one component carrier of the uplink transmission resource of supporting PHR and send PH, the PHR of the described PH correspondence of transmission comprises the PHR of triggering at least.
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