CN102573032B - Method, system and equipment for power headroom report - Google Patents
Method, system and equipment for power headroom report Download PDFInfo
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- CN102573032B CN102573032B CN201210035412.XA CN201210035412A CN102573032B CN 102573032 B CN102573032 B CN 102573032B CN 201210035412 A CN201210035412 A CN 201210035412A CN 102573032 B CN102573032 B CN 102573032B
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- H—ELECTRICITY
- 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
The embodiment of the invention relates to the technical field of wireless communication, in particular to a method, a system and equipment for power headroom report. The method, the system and the equipment are used for realizing the power headroom report at the concurrent moment of a physical random access channel (PRACH) and a physical uplink shared channel (PUSCH) and/or a physical uplink control channel (PUCCH). The method in the embodiment of the invention comprises the following steps that: after determining that a preamble exists at a power headroom report moment and that the concurrent transmission of a physical uplink channel is required, user equipment determines a power headroom value corresponding to a cell of each transmission physical uplink channel; and the user equipment reports the determined power headroom values. The power headroom report can be realized at the concurrent moment of the PRACH and the PUSCH and/or the PUCCH, so that the power allocation conditions of the user equipment at the concurrent moment can be indicated to a network side, basic guarantee can be provided for the uplink power allocation of the network side, and system performance is improved.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of method of power headroom reporting, system and equipment.
Background technology
Current LTE (Long Term Evolution, Long Term Evolution) system, can only have a carrier wave, and maximum bandwidth is 20Mhz in Yi Ge community.For LTE-A (LTE-Advanced strengthens Long Term Evolution) system, the peak rate of LTE-A system is greatly improved than LTE system, and LTE-A system requirements reaches descending 1Gbps, up 500Mbps.Obviously, the bandwidth of 20Mhz cannot meet this demand.For LTE-A system can be met the requirements, introduce CA (Carrier Aggregation, carrier aggregation) technology.
Carrier aggregation technology is that terminal can be worked on multiple communities simultaneously, and these communities can be continuous or discrete on frequency domain, and the bandwidth of each community can be identical or different.For keeping and LTE system compatible, the maximum bandwidth limit of each community is 20MHz.Community form that it is generally acknowledged at present a user terminal polymerization is 5 to the maximum.In addition, may support difference in functionality based on different districts, LTE-A system is also classified to the community of user terminal polymerization, is divided into:
PCell (Primary Cell, main plot): in the multiple communities of terminal polymerization, only have Yi Ge community to be defined as Pcell, Pcell is by base station selected, and by RRC (Radio Resource Control, Radio Resource control) signal deployment to terminal.Only have and on Pcell, dispose PUCCH (Physical Uplink Control Channel, physical layer ascending control channel);
SCell (auxiliary community, Secondary Cell): the community in all communities of terminal polymerization except Pcell is all SCell.
LTE-A R10 only supports single TA scene, i.e. the TA of all communities of UE polymerization is identical.LTE-AR11 has introduced many TA scene, i.e. all community TA of UE polymerization may be different.
PHR (the Power Headroom Report of definition in LTE-AR10 (version 10), power headroom reporting) need to report the PH information on the community configuring and activate, once have PHR to trigger, the PH information on the community of all configurations and activation is packed and is reported together.
The process of the non-competing random access in LTE system is mainly divided into three steps:
Msg1, special ra-PreambleIndex (the Random Acelless Preamble that is used in non-competing random access is divided in base station to UE, random access lead code) and random PRACH (the Physical Random Access Channel using that accesses, Physical Random Access Channel) resource ra-PRACH-MaskIndex (PRACH Mask Index, PRACH Mask numbering), arrive for downlink data the non-competing random access causing and use PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) carry these information, the non-competing random access causing for switching is by RRC (Radio Resource Control, Radio Resource control) signaling carries these information.
Msg2, UE, according to ra-PreambleIndex and the ra-PRACH-MaskIndex of Msg1 instruction, send the dedicated preamble (lead code) of specifying in the PRACH resource of specifying to base station.Uplink timing advance TA is calculated according to Msg2 after receiving Msg2 in base station.
Msg3, base station send accidental access response to UE, comprise Timing Advance information and follow-up uplink transmission resource and distribute UL grant (uplink authorization) in accidental access response, and Timing Advance is for the timing relationship of the follow-up uplink of UE.(the Random Access-Radio Network Temporary Identifier of RA-RNTI for PDCCH of carrying Msg3 scheduling message, random access-radio network temporary identifier) scrambling, RA-RNTI is unique corresponding with the running time-frequency resource that sends Msg2 in 10ms window; In Msg3, also carry in addition preamble ID, UE determines that by RA-RNTI and preamble ID this Msg3 is corresponding with the Msg2 of its transmission.
In LTE-A Rel-11 system, in order to support the carrier aggregation of up different frequency range, and macro base station (Macro eNB) and RRH (Remote Radio Head, far end radio frequency) mix carrier aggregation deployment scheme, to occur PCell cause propagation time different situations different from SCell signal path, SCell needs the uplink synchronous of independent foundation maintenance and base station.The uplink synchronous of SCell is by RA (Random Access, random access) process implementation, in SCell random access procedure, on other Serving cell, may have PUSCH (Physical Uplink Shared Channel, physical uplink link sharing channel) and/or PUCCH (Physical Uplink Control Channel, physical layer ascending control channel) transmission, there is random access procedure and the upper PUCCH of other cell and/or the concurrent situation of PUSCH on SCell.In current PHR process, only consider the situation of PUSCH/PUCCH parallel transmission, do not considered situation when PUCCH and/or PUSCH and PRACH are concurrent.
In sum, also there is no at present a kind of scheme of carrying out power headroom reporting in PRACH and PUSCH and/or concurrent moment of PUCCH.
Summary of the invention
Method, system and the equipment of a kind of power headroom reporting that the embodiment of the present invention provides, carry out power headroom reporting in order to realize at PRACH and PUSCH and/or concurrent moment of PUCCH.
The method of a kind of power headroom reporting that the embodiment of the present invention provides, comprising:
Subscriber equipment exists preamble and physical uplink channel to need after concurrent transmission in definite power headroom reporting moment, determines the power headroom value corresponding to community of each transmitting physical up channel;
The power headroom value that described user equipment to report is definite.
The method that a kind of power that the embodiment of the present invention provides is adjusted, comprising:
Network equipment receives the power headroom value of user equipment to report, and wherein said power headroom value is that described subscriber equipment is determined after definite power headroom reporting moment exists preamble and physical uplink channel to need concurrent transmission;
Described network equipment, according to described power headroom value, is adjusted ascending power.
The subscriber equipment of a kind of power headroom reporting that the embodiment of the present invention provides, comprising:
Margin value determination module, for existing preamble and physical uplink channel to need after concurrent transmission in definite power headroom reporting moment, determines the power headroom value corresponding to community of each transmitting physical up channel;
Reporting module, for reporting definite power headroom value.
The network equipment that a kind of power that the embodiment of the present invention provides is adjusted, comprising:
Receiver module, for receiving the power headroom value of user equipment to report, wherein said power headroom value is that described subscriber equipment is determined after definite power headroom reporting moment exists preamble and physical uplink channel to need concurrent transmission;
Adjusting module, for according to described power headroom value, adjusts ascending power.
Owing to can carrying out power headroom reporting at PRACH and PUSCH and/or concurrent moment of PUCCH, thereby can indicate the power division situation at concurrent moment subscriber equipment to network side, provide basic guarantee for network side distributes ascending power, improve systematic function.
Brief description of the drawings
Fig. 1 is the system configuration schematic diagram of embodiment of the present invention power headroom reporting;
Fig. 2 is the structural representation of subscriber equipment in the system of embodiment of the present invention power headroom reporting;
Fig. 3 is the structural representation of network equipment in the system of embodiment of the present invention power headroom reporting;
Fig. 4 is the method flow schematic diagram that embodiment of the present invention subscriber equipment carries out power headroom reporting;
Fig. 5 is the method flow schematic diagram of embodiment of the present invention network equipment received power surplus;
Fig. 6 is the form schematic diagram of embodiment of the present invention the first PHR MAC CE;
Fig. 7 is the form schematic diagram of embodiment of the present invention the second PHR MAC CE;
Fig. 8 is the form schematic diagram of the third PHR MAC CE of the embodiment of the present invention;
Fig. 9 is the form schematic diagram of the 4th kind of PHR MAC CE of the embodiment of the present invention.
Embodiment
Embodiment of the present invention subscriber equipment exists preamble and physical uplink channel to need after concurrent transmission in definite power headroom reporting moment, determines and report the power headroom value corresponding to community of each transmitting physical up channel.Owing to can carrying out power headroom reporting at PRACH and PUSCH and/or concurrent moment of PUCCH, thereby can indicate the power division situation at concurrent moment subscriber equipment to network side, provide basic guarantee for network side distributes ascending power, improve systematic function.
In LTE-A system, PH calculates and reports based on serving cell (Serving cell).Once there be PHR to trigger on certain servingcell, need so to report the PH information on the cell of all configurations and activation, and on the cell activating, might not have true PUSCH and/or PUCCH transmission, therefore LTE-A has introduced virtual (virtual) PUCCH form and virtual PUSCH form.In the time there is not the PUCCH of true transmission and/or PUSCH on the cell of certain activation, can calculate the pH value on this cell with virtual PUCCH and/or virtualPUSCH form, specifically can be referring to 3GPP 36.213 agreements.
Wherein, the transmitting physical up channel of the embodiment of the present invention comprise in following channel partly or entirely:
PUSCH and PUCCH.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
In declarative procedure below, first implement to describe from the cooperation of network side and user equipment side, finally describe from the enforcement of network side and user equipment side respectively, but this does not also mean that the two must coordinate enforcement, in fact, separate while implementing when network side and user equipment side, also solved respectively in network side, the existing problem of user equipment side, when just the two is combined with, can obtain better technique effect.
As shown in Figure 1, the system of embodiment of the present invention power headroom reporting comprises: subscriber equipment 10 and network equipment 20.
Subscriber equipment 10, for existing preamble and physical uplink channel to need after concurrent transmission in definite power headroom reporting moment, determines the power headroom value corresponding to community of each transmitting physical up channel, and reports definite power headroom value;
Network equipment 20, for receiving the power headroom value of user equipment to report, and according to power headroom value, adjusts ascending power.
In force, subscriber equipment 10 reports outside power headroom value corresponding to the community of each transmitting physical up channel, can also select to report power headroom value corresponding to the community of transmission preamble or not report power headroom value corresponding to community of transmission preamble, lower mask body introduction.
Report mode one, report power headroom value corresponding to community of transmitting preamble.
Concrete, subscriber equipment 10, before reporting definite power headroom value, is determined power headroom value corresponding to community of transmission preamble, then reports definite all power headroom values in the power headroom reporting moment.
Wherein, reporting the power headroom reporting moment in mode one is that preamble and physical uplink channel need the concurrent transmission moment.
In force, can be according to power headroom value corresponding to community of a kind of definite transmission preamble in following manner.
Determine that mode one, subscriber equipment 10 determine power headroom value corresponding to community of transmission preamble according to formula one:
Power headroom value=P corresponding to community of transmission preamble
cMAX, c(i) _ [Preamble_received_target_power+PLc+ (Npreamble-1) × dP_rampup] ... formula one;
Wherein, P
cMAX, c(i) be the available maximum uplink transmission power that this subscriber equipment configures on this Serving cell, Preamble_received_target_power is the up preamble expectation received power of configure user equipment, the descending path loss of subscriber equipment in PLcShi Gai community, Npreamble is the number of times that carries out transmitting in random access procedure preamble, and dP_reampup is that preamble retransmits the performance number that needs increase at every turn.
Preferably, determine P
cMAX, c(i) maximum power rollback value is to determine according to the transmission situation in concurrent moment.
Wherein, determine P according to maximum power rollback value
cMAX, c(i) mode can, referring to 3GPP 36.101 agreements, not repeat them here.
Preferably, the maximum power rollback value using when described each Serving cell reports actual power surplus is determined according to all physical uplink channel transmission situations.
Preferably, subscriber equipment 10 adopts definite mode for the moment, if desired determines maximum power rollback value according to Preamble transmission situation, can also be in the time reporting definite power headroom value, and the power headroom value corresponding to preamble identifies.Know during the maximum power rollback value of this transmission is calculated and comprised the information that Premable transmits when network equipment 20 like this,, in follow-up Preamble and physical uplink channel transmission, will carry out follow-up power division with reference to the information of the MPR in this moment.
For definite mode one, network equipment 20 is in the time that preamble and physical uplink channel transmit simultaneously, maximum power rollback value during according to Preamble transmission and physical uplink channel transmission, be not less than power headroom value corresponding to community of the transmission preamble receiving for preamble transmission distributes, and be that physical uplink channel distributes according to dump power.That is to say, network equipment 20 is in the time that follow-up preamble and physical uplink channel may transmit simultaneously, and after ensureing the power of preamble transmission, other power are used further to the power division of physical uplink channel.
Determine that mode two, subscriber equipment 10 are according to physical vlan up channel, determine power headroom value corresponding to community of transmission preamble.Determine the through-put power of not considering preamble in mode two.
For definite mode two, if the maximum power rollback value information of considering in physical uplink channel transmission has been considered the situation of Preamble transmission,, in the moment of follow-up Preamble and physical uplink channel parallel transmission, network equipment 20 carries out when ascending power distributes carrying out power dispatching according to the information reflecting in this power headroom at uplink scheduling; If otherwise maximum power rollback value is not when comprising the situation of Preamble transmission, subsequent network side apparatus 20, in the time carrying out physical uplink channel transmission, carries out follow-up uplink scheduling and power division according to the situation of this transmission reflection.
Preferably, for definite mode two, subscriber equipment 10 can also be by for notifying the information that the power headroom reporting moment exists preamble to report together with all power headroom values of determining.
Wherein, can be bitmap (bit map) for notifying the information that the power headroom reporting moment exists preamble.Such as " 1 " represents to exist preamble; There is not preamble in " 0 ".
Accordingly, if the power headroom value receiving comprises power headroom value corresponding to community of transmitting preamble, and power headroom value corresponding to the community of transmission preamble determined according to physical vlan up channel, when calculating the maximum power rollback value adopting, power headroom do not consider Preamble transmission, when network equipment 20 carries out physical uplink channel transmission on follow-up each Serving cell, carry out power division according to this virtual power surplus; In the time that power headroom calculates the maximum power rollback value consideration Preamble transmission adopting, described network equipment, in the time that preamble and physical uplink channel transmit simultaneously, is adjusted ascending power according to the maximum power rollback information MPR in the power headroom value of described user equipment to report.
Transmit the back-off information that the concurrent moment causes because MPR situation has reflected when preamble and physical uplink channel, therefore when again occurring that preamble and physical uplink channel transmit, adopt MPR information for subsequent power distribution when follow-up simultaneously.
Report mode two, do not report power headroom value corresponding to community of transmitting preamble.
Concrete, subscriber equipment 10 does not exist at the next one on the sub-frame of uplink of preamble, power headroom value corresponding to community of determining each transmitting physical up channel, there is not the sub-frame of uplink of preamble in subscriber equipment 10 then by the next one, report definite all power headroom values.That is to say, put off until next available sub-frame of uplink (not having the sub-frame of uplink of preamble) reporting power margin value again.
In force, specifically adopt which kind of mode (comprise and determine mode and report mode) in agreement, to specify, also can, by network side notifying user equipment side, can also be consulted to determine by network side and user equipment side.
Wherein, the network equipment of the embodiment of the present invention can be base station (such as macro base station, Home eNodeB etc.), can be also RN (relaying) equipment, can also be other network equipment.
As shown in Figure 2, the subscriber equipment in the system of embodiment of the present invention power headroom reporting comprises: margin value determination module 200 and reporting module 210
Margin value determination module 200, for existing preamble and physical uplink channel to need after concurrent transmission in definite power headroom reporting moment, determines the power headroom value corresponding to community of each transmitting physical up channel;
Reporting module 210, for reporting definite power headroom value.
Preferably, margin value determination module 200 also for: determine transmission preamble power headroom value corresponding to community.
Preferably, margin value determination module 200 is determined power headroom value corresponding to community of transmission preamble according to formula one.
Preferably, margin value determination module 200, according to physical vlan up channel, is determined power headroom value corresponding to community of transmission preamble.
Preferably, if desired determine maximum power rollback value according to Preamble transmission situation, margin value determination module 200 also for: by for notifying the information that the power headroom reporting moment exists preamble to report together with all power headroom values of determining.
Preferably, reporting module 210 reports definite all power headroom values in the power headroom reporting moment.
Preferably, margin value determination module 200 does not exist on the sub-frame of uplink of preamble at the next one, determines the power headroom value corresponding to community of each transmitting physical up channel;
Accordingly, there is not the sub-frame of uplink of preamble in reporting module 210 by the next one, report definite all power headroom values.
As shown in Figure 3, the network equipment in the system of embodiment of the present invention power headroom reporting comprises: receiver module 300 and adjusting module 310.
Receiver module 300, for receiving the power headroom value of user equipment to report, wherein power headroom value is that subscriber equipment is determined after definite power headroom reporting moment exists preamble and physical uplink channel to need concurrent transmission;
Adjusting module 310, for according to power headroom value, adjusts ascending power.
Preferably, if the power headroom value receiving comprises power headroom value corresponding to community of transmitting preamble, and power headroom value corresponding to community of transmission preamble is to determine according to formula one, adjusting module 310 is in the time that preamble and physical uplink channel transmit simultaneously, maximum power rollback value during according to Preamble transmission and physical uplink channel transmission, be not less than power headroom value corresponding to community of the transmission preamble receiving for preamble transmission distributes, and be that physical uplink channel distributes according to dump power.
Preferably, if the power headroom value receiving comprises power headroom value corresponding to community of transmitting preamble, and power headroom value corresponding to the community of transmission preamble determined according to physical vlan up channel, adjusting module 310 is not considered Preamble transmission when power headroom calculates the maximum power rollback value adopting, carry out physical uplink channel transmission on follow-up each Serving cell time, carry out power division according to this virtual power surplus; Consider Preamble when transmission when power headroom calculates the maximum power rollback value adopting, in the time that preamble and physical uplink channel transmit, according to the maximum power rollback information MPR in the power headroom value of user equipment to report, ascending power is adjusted simultaneously.
Based on same inventive concept, in the embodiment of the present invention, also provide a kind of subscriber equipment to carry out the method for power headroom reporting, the principle of dealing with problems due to the method is similar to the subscriber equipment in the system of embodiment of the present invention power headroom reporting, therefore the enforcement of the method can be referring to the enforcement of method, repeats part and repeat no more.
As shown in Figure 4, the method that embodiment of the present invention subscriber equipment carries out power headroom reporting comprises the following steps:
Step 401, subscriber equipment exist preamble and physical uplink channel to need after concurrent transmission in definite power headroom reporting moment, determine the power headroom value corresponding to community of each transmitting physical up channel;
Step 402, the definite power headroom value of user equipment to report.
In force, subscriber equipment 10 reports outside power headroom value corresponding to the community of each transmitting physical up channel, can also select to report power headroom value corresponding to the community of transmission preamble or not report power headroom value corresponding to community of transmission preamble, lower mask body introduction.
Report mode one, report power headroom value corresponding to community of transmitting preamble.
Concrete, in step 401, subscriber equipment is determined power headroom value corresponding to community of transmission preamble; In step 402, report definite all power headroom values in the power headroom reporting moment.
In force, can be according to power headroom value corresponding to community of a kind of definite transmission preamble in following manner.
Determine that mode one, subscriber equipment are according to power headroom value corresponding to community of the definite transmission preamble of formula one.
Preferably, determine P
cMAX, c(i) maximum power rollback value is to determine according to the transmission situation in concurrent moment.
Preferably, the maximum power rollback value using when described each Serving cell reports actual power surplus is determined according to all physical uplink channel transmission situations.
Preferably, subscriber equipment adopts definite mode for the moment, if desired determines maximum power rollback value according to Preamble transmission situation, can also be in the time reporting definite power headroom value, and the power headroom value corresponding to preamble identifies.Know during the maximum power rollback value of this transmission is calculated and comprised the information that Premable transmits when network equipment like this,, in follow-up Preamble and physical uplink channel transmission, will carry out follow-up power division with reference to the information of the MPR in this moment.
Determine that mode two, subscriber equipment are according to physical vlan up channel, determine power headroom value corresponding to community of transmission preamble.
Preferably, for definite mode two, subscriber equipment can also be by for notifying the information that the power headroom reporting moment exists preamble to report together with all power headroom values of determining.
Report mode two, do not report power headroom value corresponding to community of transmitting preamble.
Concrete, subscriber equipment does not exist at the next one on the sub-frame of uplink of preamble, determine the power headroom value corresponding to community of each transmitting physical up channel, then do not have the sub-frame of uplink of preamble by the next one, report definite all power headroom values.That is to say, put off until next available sub-frame of uplink (not having the sub-frame of uplink of preamble) reporting power margin value again.
In force, specifically adopt which kind of mode (comprise and determine mode and report mode) in agreement, to specify, also can, by network side notifying user equipment side, can also be consulted to determine by network side and user equipment side.
Based on same inventive concept, a kind of method that also provides network equipment received power surplus to report in the embodiment of the present invention, the principle of dealing with problems due to the method is similar to the network equipment in the system of embodiment of the present invention power headroom reporting, therefore the enforcement of the method can be referring to the enforcement of method, repeats part and repeat no more.
As shown in Figure 5, the method for embodiment of the present invention network equipment received power surplus comprises the following steps:
Step 501, network equipment receive the power headroom value of user equipment to report, and wherein power headroom value is that subscriber equipment is determined after definite power headroom reporting moment exists preamble and physical uplink channel to need concurrent transmission;
Step 502, network equipment, according to power headroom value, are adjusted ascending power.
Preferably, if the power headroom value receiving comprises power headroom value corresponding to community of transmitting preamble, and power headroom value corresponding to community of transmission preamble is to determine according to formula one, in step 502, network equipment is in the time that preamble and physical uplink channel transmit simultaneously, maximum power rollback value during according to Preamble transmission and PUSCH/PUCCH transmission, be not less than power headroom value corresponding to community of the transmission preamble receiving for preamble transmission distributes, and be that physical uplink channel distributes according to dump power.
Preferably, if the power headroom value receiving comprises power headroom value corresponding to community of transmitting preamble, and power headroom value corresponding to the community of transmission preamble determined according to physical vlan up channel, in step 502, when calculating the maximum power rollback value adopting, power headroom do not consider Preamble transmission, when the described network equipment carries out physical uplink channel transmission on follow-up each Serving cell, carry out power division according to this virtual power surplus; In the time that power headroom calculates the maximum power rollback value consideration Preamble transmission adopting, described network equipment, in the time that preamble and physical uplink channel transmit simultaneously, is adjusted ascending power according to the maximum power rollback information MPR in the power headroom value of described user equipment to report.
Enumerating five examples below describes the solution of the present invention.
Example one, suppose: for UE has configured 1 PCell and 1 SCell, the upper triggering of PCell PH reports the moment on SCell, have preamble transmission to carry out simultaneously.
1, at moment t, on PCell, there is PUSCH newly to transmit and meet PH report condition, on synchronization SCell, there is Preamble transmission;
2, UE adopts formula one to determine power headroom value corresponding to SCell, and in extended PHR MACCE, increase the power headroom value that SCell is corresponding, wherein corresponding PHR MAC CE form as shown in Figure 6, wherein in the PHR MAC CE of Fig. 6, newly-increased part is referring to boldface letter, and the physical meaning of all the other various pieces can be referring to 3GPP 36.321 agreements;
3, eNB receives after this Extended PHR MAC CE, obtain the power headroom on this SCell, in the time that follow-up preamble and PUSCH and/or PUCCH transmit simultaneously, first ensure under the prerequisite of preamble through-put power, PUSCH and/or PUCCH are distributed by dump power.
Example two, suppose: for UE has configured 1 PCell and 1 SCell, the upper triggering of PCell PH reports the moment on SCell, have preamble transmission to carry out simultaneously.
1, at moment t, on PCell, there is PUSCH newly to transmit and meet PH report condition, on synchronization SCell, there is Preamble transmission;
2, UE is according to physical vlan up channel, determine the power headroom value that SCell is corresponding, and in extendedPHR MAC CE, increase the power headroom value that SCell is corresponding, wherein corresponding PHR MAC CE form as shown in Figure 7, wherein in the PHR MAC CE of Fig. 7, newly-increased part is referring to boldface letter, and the physical meaning of all the other various pieces can be referring to 3GPP 36.321 agreements;
3, eNB receives after this Extended PHR MAC CE, obtain the power headroom on this SCell, in the time that follow-up preamble and PUSCH and/or PUCCH transmit simultaneously, if the maximum power rollback value information of considering in physical uplink channel transmission has been considered the situation of Preamble transmission, carry out when ascending power distributes carrying out power dispatching according to the information reflecting in this power headroom at uplink scheduling.If maximum power rollback value is not when comprising the situation of Preamble transmission, in the uplink scheduling in concurrent moment of up preamble, carry out power dispatching according to the information reflecting in this power headroom for not having.
Example three, suppose: for UE has configured 1 PCell and 1 SCell, the upper triggering of PCell PH reports the moment on SCell, have preamble transmission to carry out simultaneously.
1, at moment t, on PCell, there is PUSCH newly to transmit and meet PH report condition, on synchronization SCell, there is Preamble transmission;
2, UE is according to physical vlan up channel, determine the power headroom value that SCell is corresponding, and in extendedPHR MAC CE, increase power headroom value that SCell is corresponding and for notifying the power headroom reporting moment to have the information of preamble, wherein corresponding PHR MAC CE form is as shown in Fig. 8 or Fig. 9, wherein in the PHR MAC CE of Fig. 8 and Fig. 9, newly-increased part is referring to boldface letter, and the physical meaning of all the other various pieces can be referring to 3GPP 36.321 agreements;
3, eNB receives after this Extended PHR MAC CE, obtain the power headroom on this SCell, in the time that follow-up preamble and PUSCH and/or PUCCH transmit simultaneously, by having preamble transmission for notifying information that the power headroom reporting moment exists preamble to identify this power division situation corresponding to PHR, and retain according to the MPR calculating during this time transmitted, in the time that follow-up preamble and PUSCH and/or PUCCH transmit simultaneously, adopt this MPR for power division.
Example four, periodicPHR-Timer are overtime, have up PUSCH newly to transmit generation at subframe t, but subframe t has preamble transmission to occur simultaneously, the current PHR that do not trigger reports, when the new transmission time of next PUSCH does not have preamble when transmission, then carry out PHR and report.
Example five, prohibitPHR-Timer are overtime or overtime, change UE when exceeding dl-PathlossChange dB and have up new data transmission when activating path loss on Serving cell; Send if be now carved with preamble, this moment does not trigger PHR and reports, until the follow-up moment, UE has up new data transmission and path loss to change still to exceed thresholding, and current subframe do not have preamble to send, and triggers PHR and reports.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (15)
1. the method for a power headroom reporting, it is characterized in that, the method comprises: subscriber equipment exists lead code preamble and physical uplink channel to need after concurrent transmission in definite power headroom reporting moment, determines the power headroom value corresponding to community of each transmitting physical up channel;
The power headroom value that described user equipment to report is definite;
The definite power headroom value of described user equipment to report also comprises before:
Described subscriber equipment is determined power headroom value corresponding to community of transmission preamble;
Described user equipment to report power headroom value also comprises:
If desired determine maximum power rollback value according to Preamble transmission situation, described subscriber equipment is by for notifying the information that the power headroom reporting moment exists preamble to report together with all power headroom values of determining.
2. the method for claim 1, is characterized in that, described subscriber equipment is determined power headroom value corresponding to community of transmission preamble according to following formula:
Power headroom value=P corresponding to community of transmission preamble
cMAX, c(i) – [Preamble_received_target_power+PLc+ (Npreamble-1) × dP_rampup];
Wherein, P
cMAX, c(i) be the available maximum uplink transmission power that this subscriber equipment configures on the community of transmission preamble, Preamble_received_target_power is the up preamble expectation received power of configure user equipment, the descending path loss of subscriber equipment in PLcShi Gai community, Npreamble is the number of times that carries out transmitting in random access procedure preamble, and dP_reampup is that preamble retransmits the performance number that needs increase at every turn.
3. the method for claim 1, is characterized in that, described subscriber equipment determines that power headroom value corresponding to community of transmission preamble comprises:
Described subscriber equipment, according to physical vlan up channel, is determined power headroom value corresponding to community of transmission preamble.
4. method as claimed in claim 1, is characterized in that, determines P
cMAX, c(i) maximum power rollback value is to determine according to the transmission situation in concurrent moment.
5. method as claimed in claim 1, is characterized in that, the maximum power rollback value that each Serving cell is used while reporting actual power surplus is to determine according to all physical uplink channel transmission situations.
6. the method as described in as arbitrary in claim 1～5, is characterized in that, the definite power headroom value of described user equipment to report comprises:
Described subscriber equipment reports definite all power headroom values in the power headroom reporting moment.
7. the method that power is adjusted, is characterized in that, the method comprises:
Network equipment receives the power headroom value of user equipment to report, and wherein said power headroom value is that described subscriber equipment is determined after definite power headroom reporting moment exists preamble and physical uplink channel to need concurrent transmission;
Described network equipment, according to described power headroom value, is adjusted ascending power;
Described network equipment comprises ascending power adjustment:
If the power headroom value receiving comprises power headroom value corresponding to community of transmitting preamble, and power headroom value corresponding to the community of transmission preamble determined according to physical vlan up channel, when calculating the maximum power rollback value adopting, power headroom do not consider Preamble transmission, when the described network equipment carries out physical uplink channel transmission on follow-up each Serving cell, carry out power division according to this virtual power surplus; In the time that power headroom calculates the maximum power rollback value consideration Preamble transmission adopting, described network equipment, in the time that preamble and physical uplink channel transmit simultaneously, is adjusted ascending power according to the maximum power rollback information MPR in the power headroom value of described user equipment to report.
8. method as claimed in claim 7, is characterized in that, described network equipment comprises ascending power adjustment:
If the power headroom value receiving comprises power headroom value corresponding to community of transmitting preamble, and power headroom value corresponding to community of transmission preamble is to determine according to following formula, described network equipment is in the time that preamble and physical uplink channel transmit simultaneously, maximum power rollback value during according to Preamble transmission and physical uplink channel transmission, be not less than power headroom value corresponding to community of the transmission preamble receiving for preamble transmission distributes, and be that physical uplink channel distributes according to dump power;
Wherein, power headroom value=P corresponding to community of transmission preamble
cMAX, c(i) – [Preamble_received_target_power+PLc+ (Npreamble-1) × dP_rampup];
P
cMAX, c(i) be the available maximum uplink transmission power that this subscriber equipment configures on this Serving cell, Preamble_received_target_power is the up preamble expectation received power of configure user equipment, the descending path loss of subscriber equipment in PLcShi Gai community, Npreamble is the number of times that carries out transmitting in random access procedure preamble, and dP_reampup is that preamble retransmits the performance number that needs increase at every turn.
9. method as claimed in claim 8, is characterized in that, determines P
cMAX, c(i) maximum power rollback value is to determine according to the transmission situation in concurrent moment.
10. a subscriber equipment for power headroom reporting, is characterized in that, this subscriber equipment comprises:
Margin value determination module, for existing preamble and physical uplink channel to need after concurrent transmission in definite power headroom reporting moment, determines the power headroom value corresponding to community of each transmitting physical up channel;
Reporting module, for reporting definite power headroom value;
Described margin value determination module also for: determine transmission preamble power headroom value corresponding to community;
Described margin value determination module also for:
If desired determine maximum power rollback value according to Preamble transmission situation, by for notifying the information that the power headroom reporting moment exists preamble to report together with all power headroom values of determining.
11. subscriber equipmenies as claimed in claim 10, is characterized in that, described margin value determination module is determined power headroom value corresponding to community of transmission preamble according to following formula:
Power headroom value=P corresponding to community of transmission preamble
cMAX, c(i) – [Preamble_received_target_power+PLc+ (Npreamble-1) × dP_rampup];
Wherein, P
cMAX, c(i) be the available maximum uplink transmission power that this subscriber equipment configures on the community of transmission preamble, Preamble_received_target_power is the up preamble expectation received power of configure user equipment, the descending path loss of subscriber equipment in PLcShi Gai community, Npreamble is the number of times that carries out transmitting in random access procedure preamble, and dP_reampup is that preamble retransmits the performance number that needs increase at every turn.
12. subscriber equipmenies as claimed in claim 10, is characterized in that, described margin value determination module specifically for: according to physical vlan up channel, determine transmission preamble power headroom value corresponding to community.
13. subscriber equipmenies as described in as arbitrary in claim 10～12, is characterized in that, described reporting module specifically for: report definite all power headroom values in the power headroom reporting moment.
14. 1 kinds of network equipments that power is adjusted, is characterized in that, this equipment comprises:
Receiver module, for receiving the power headroom value of user equipment to report, wherein said power headroom value is that described subscriber equipment is determined after definite power headroom reporting moment exists preamble and physical uplink channel to need concurrent transmission;
Adjusting module, for according to described power headroom value, adjusts ascending power;
Described adjusting module specifically for:
If the power headroom value receiving comprises power headroom value corresponding to community of transmitting preamble, and power headroom value corresponding to the community of transmission preamble determined according to physical vlan up channel, when calculating the maximum power rollback value adopting, power headroom do not consider Preamble transmission, carry out physical uplink channel transmission on follow-up each Serving cell time, carry out power division according to this virtual power surplus; In the time that power headroom calculates the maximum power rollback value consideration Preamble transmission adopting, in the time that preamble and physical uplink channel transmit simultaneously, according to the maximum power rollback information MPR in the power headroom value of described user equipment to report, ascending power is adjusted.
15. network equipments as claimed in claim 14, is characterized in that, described adjusting module specifically for:
If the power headroom value receiving comprises power headroom value corresponding to community of transmitting preamble, and power headroom value corresponding to community of transmission preamble is to determine according to following formula, in the time that preamble and physical uplink channel transmit simultaneously, maximum power rollback value during according to Preamble transmission and physical uplink channel transmission, be not less than power headroom value corresponding to community of the transmission preamble receiving for preamble transmission distributes, and be that physical uplink channel distributes according to dump power;
Wherein, power headroom value=P corresponding to community of transmission preamble
cMAX, c(i) – [Preamble_received_target_power+PLc+ (Npreamble-1) × dP_rampup];
P
cMAX, c(i) be the available maximum uplink transmission power that this subscriber equipment configures on this Serving cell, Preamble_received_target_power is the up preamble expectation received power of configure user equipment, the descending path loss of subscriber equipment in PLcShi Gai community, Npreamble is the number of times that carries out transmitting in random access procedure preamble, and dP_reampup is that preamble retransmits the performance number that needs increase at every turn.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210035412.XA CN102573032B (en) | 2012-02-16 | 2012-02-16 | Method, system and equipment for power headroom report |
| PCT/CN2013/071533 WO2013120442A1 (en) | 2012-02-16 | 2013-02-07 | Method and device for reporting power headroom |
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| CN201210035412.XA CN102573032B (en) | 2012-02-16 | 2012-02-16 | Method, system and equipment for power headroom report |
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| CN102573032B (en) * | 2012-02-16 | 2014-09-24 | 电信科学技术研究院 | Method, system and equipment for power headroom report |
| EP2854460B1 (en) * | 2013-09-27 | 2017-04-05 | Sun Patent Trust | Power control and power headroom reporting for dual connectivity |
| EP3085169A4 (en) | 2013-12-20 | 2017-07-19 | LG Electronics Inc. | Method for power headroom reporting and device therefor |
| CN105282783B (en) | 2014-07-22 | 2020-03-27 | 中兴通讯股份有限公司 | Method, device and system for reporting power headroom report in dual connectivity |
| CN105873213B (en) * | 2015-01-20 | 2019-11-19 | 电信科学技术研究院 | A kind of method and apparatus carrying out uplink scheduling |
| CN106413052B (en) * | 2015-08-03 | 2019-05-31 | 电信科学技术研究院 | A kind of method, apparatus and system for distributing uplink power |
| CN106470058B (en) * | 2015-08-20 | 2019-06-21 | 北京大学 | The switching method and apparatus of transmission mode in a kind of long term evolution LTE |
| CN110213834B (en) | 2017-01-06 | 2020-09-29 | 华为技术有限公司 | Random access method, user equipment and network equipment |
| CN109151979B (en) * | 2017-06-16 | 2020-12-15 | 华为技术有限公司 | Power headroom determination method and network equipment |
| CN109429321B (en) * | 2017-08-31 | 2020-09-25 | 展讯通信（上海）有限公司 | Reporting method of power headroom information, user terminal and readable storage medium |
| WO2020030147A1 (en) * | 2018-08-10 | 2020-02-13 | 华为技术有限公司 | Communication method and apparatus |
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| KR101435858B1 (en) * | 2010-04-01 | 2014-09-01 | 엘지전자 주식회사 | Method and apparatus for controlling uplink power in a wireless access system |
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