CN104823489A - Method and apparatus for controlling channel state information feedback - Google Patents

Method and apparatus for controlling channel state information feedback Download PDF

Info

Publication number
CN104823489A
CN104823489A CN201280077388.4A CN201280077388A CN104823489A CN 104823489 A CN104823489 A CN 104823489A CN 201280077388 A CN201280077388 A CN 201280077388A CN 104823489 A CN104823489 A CN 104823489A
Authority
CN
China
Prior art keywords
state information
channel state
energy efficiency
information feedback
down link
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201280077388.4A
Other languages
Chinese (zh)
Inventor
朱大琳
雷鸣
宋令阳
李慧
许晨
吴建军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC China Co Ltd
Original Assignee
NEC China Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC China Co Ltd filed Critical NEC China Co Ltd
Publication of CN104823489A publication Critical patent/CN104823489A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • 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
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0645—Variable feedback
    • H04B7/0647—Variable feedback rate
    • 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
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • 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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/267—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the information rate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

A method and an apparatus for controlling channel state information feedback are provided. The method of controlling channel state information feedback comprises: determining, based on a system bandwidth, a plurality of channel state information feedback rates to maximize downlink energy efficiency, each of the plurality of channel state information feedback rates being used by a respective user equipment to feed channel state information back to a base station. Considering the effect of system bandwidth consumption of uplink feedback on energy efficiency optimization, the embodiments of the present invention can improve downlink energy efficiency by adjusting uplink feedback rates of user equipments in a wireless system.

Description

For the method and apparatus of control channel status information feedback
Technical field
Embodiments of the invention relate generally to wireless communication technology field, and relate more specifically to a kind of method and apparatus of user's control channel status information feedback.
Background technology
Along with the quick increase of wireless communication infrastructure number and the demand for data-intensive applications, become more and more important by the green communications improving energy efficiency (EE).Correspondingly, the communication technology for minimum power consumption is very important when designing wireless network.
The existing mode of majority for increasing EE performance usually under consideration line link (DL) characteristic when implement.Such as, EE performance can utilize DL modulation scheme, the internodal cooperation for DL data communication, the precoding of DL physical layer, MAC layer Resourse Distribute and user scheduling etc. to improve.
Some are also had to use the EE design mechanism of up link (UL) technology.Such as, the physical layer precoding mechanism based on channel condition information (CSI) in UL can be utilized to improve EE performance.Although this mechanism employs UL technology, such as UE feedback technique, what it was paid close attention to is use UL technology to improve DL performance to improve EE performance.In other words, this mechanism is still paid close attention to and how to be improved EE performance when considering DL characteristic.
Summary of the invention
Embodiments of the invention provide a kind of solution improving down link energy work rate in radio systems for the uplink feedback speed by adjusting subscriber equipment, and this solution considers the system bandwidth consumption of uplink feedback to the impact of optimized for energy efficiency.
In first aspect, The embodiment provides a kind of method of control channel status information feedback.The method can comprise: determine multiple channel state information feedback rate based on system bandwidth, to maximize down link energy efficiency, each channel state information feedback rate in multiple channel state information feedback rate is used for base station feedback letter in reply channel state information by corresponding subscriber equipment.
In one embodiment, the method can also comprise the channel state information feedback rate determining a subscriber equipment based on the channel state information feedback rate for other subscriber equipmenies.
In one embodiment, based on system bandwidth, the method can also comprise determines that multiple downlink transmitted power is to maximize down link energy efficiency, each downlink transmitted power in multiple downlink transmitted power is used for corresponding user device transmissions down link data by base station.
In one embodiment, the method can comprise the multiple cost factors obtained for information feedback; Determine that multiple channel state information feedback rate and multiple downlink transmitted power are to maximize down link energy efficiency based on system bandwidth and multiple cost factor.
In one embodiment, based on a cost factor in system bandwidth and multiple cost factor, the method can also comprise determines that one group of channel state information feedback rate and one group of downlink transmitted power are to maximize down link energy efficiency, each channel state information feedback rate in this group channel state information feedback rate is used for base station feedback letter in reply channel state information by corresponding subscriber equipment, and each downlink transmitted power in this group downlink transmitted power is used for corresponding user device transmissions down link data by base station; Determine multiple peak value down link energy efficiency values based on multiple cost factor, each peak value down link energy efficiency values in multiple peak value down link energy efficiency values corresponds to a cost factor and corresponds to one group of channel state information feedback rate and one group of downlink transmitted power; And be defined as the plurality of channel state information feedback rate and the plurality of downlink transmitted power by with from the corresponding one group of channel state information feedback rate of the maximum downlink energy efficiency values in multiple peak value down link energy efficiency values and one group of downlink transmitted power.
In one embodiment, multiple cost factor obtains according to system configuration.
In second aspect, The embodiment provides a kind of device for control channel status information feedback.This device can comprise: channel status determination module, be configured to determine that multiple channel state information feedback rate is to maximize down link energy efficiency based on system bandwidth, each channel state information feedback rate in multiple channel state information feedback rate is used for base station feedback letter in reply channel state information by corresponding subscriber equipment.
In one embodiment, channel status determination module can also be configured to the information feedback determining a subscriber equipment based on the channel state information feedback rate for other subscriber equipmenies.
In one embodiment, this device can comprise through-put power determination module, be configured to determine that multiple downlink transmitted power is to maximize down link energy efficiency based on system bandwidth, each downlink transmitted power in multiple downlink transmitted power is used for corresponding user device transmissions down link data by base station.
In one embodiment, this device can comprise cost and obtain module, is configured to obtain the multiple cost factors for information feedback.
In one embodiment, channel status determination module can also be configured to determine that multiple channel state information feedback rate is to maximize down link energy efficiency based on system bandwidth and multiple cost factor.
In one embodiment, through-put power determination module can also be configured to determine that multiple downlink transmitted power is to maximize down link energy efficiency based on system bandwidth and multiple cost factor.
In one embodiment, this device can comprise peak energy efficiency determination module, be configured to determine multiple peak value down link energy efficiency values based on multiple cost factor, each peak value down link energy efficiency values in multiple peak value down link energy efficiency values corresponds to a cost factor and corresponds to one group of channel state information feedback rate and one group of downlink transmitted power.
In one embodiment, channel status determination module can also be configured to determine that one group of channel state information feedback rate is to maximize down link energy efficiency based on a cost factor in system bandwidth and multiple cost factor, each channel state information feedback rate in this group channel state information feedback rate is used for base station feedback letter in reply channel state information by corresponding subscriber equipment, and the one group channel state information feedback rate corresponding with from the maximum downlink energy efficiency values in multiple peak value down link energy efficiency values is defined as the plurality of channel state information feedback rate.
In one embodiment, through-put power determination module can also be configured to determine that one group of downlink transmitted power is to maximize down link energy efficiency based on a cost factor in system bandwidth and multiple cost factor, each downlink transmitted power in this group downlink transmitted power is used for corresponding user device transmissions down link data by base station, and corresponding with maximum downlink energy efficiency values one group of downlink transmitted power is defined as the plurality of downlink transmitted power.
Also will understand other feature and advantage of embodiments of the invention according to the following description for specific embodiment of reading by reference to the accompanying drawings, wherein accompanying drawing shows principle of the present invention by way of example.
Accompanying drawing explanation
Such as by following the detailed description and the accompanying drawings, the above and other aspect of various embodiments of the present invention, characteristic sum benefit will become more obvious, in the accompanying drawings:
Fig. 1 shows the example of cordless communication network 100 according to an embodiment of the invention;
Fig. 2 shows the exemplary process diagram of the method 200 of control channel status information feedback according to an embodiment of the invention;
Fig. 3 shows the exemplary process diagram of the method 300 of control channel status information feedback according to another embodiment of the present invention;
Fig. 4 shows the exemplary process diagram of the method 400 of control channel status information feedback according to still another embodiment of the invention; And
Fig. 5 shows the schematic block diagram of the device 500 for control channel status information feedback according to an embodiment of the invention.
Identical Reference numeral mod sum label indicates similar elements in the drawings and in which.
Embodiment
The accompanying drawings and the description below describe concrete exemplary embodiment of the present invention.Only schematically depict each method and apparatus for purposes of illustration, will understand to make those skilled in the art better and implement the present invention further.The step of flow chart described herein is not limit, but can comprise other unshowned steps.And these steps can also replace order to perform.Unless term used herein and phrase otherwise indicate, otherwise be to be understood that and be interpreted as the implication consistent with the understanding of those skilled in the relevant art.
Fig. 1 shows the example of cordless communication network 100 according to an embodiment of the invention.Network 100 comprises multiple subscriber equipment (UE), is marked as 101,102,103 and 104, and base station (BS) 105, and wherein UE and BS communicates.
In the network 100, BS 105 transmits data to UE 101-104 with corresponding through-put power in DL.Meanwhile, UE 101-104 transmits CSI to BS 105 with corresponding feedback velocity at UE.Solid line in Fig. 1 and dotted line represent DL transmission and UL transmission respectively.
Although use CSI feedback can improve DL EE, for the UL bandwidth B of CSI feedback as mentioned above uLlimited total system bandwidth B will be consumed conversely.Such as, in LTE (Long Term Evolution) system, the PUCCH (physical uplink control channel) for CSI transmission occupies a large amount of bandwidth.
Typically, for the preferred large bandwidth of UL CSI feedback.Reason is that the quantity of the CSI information fed back is larger, and the channel information of acquisition is more accurate; And be further advanced by the more accurate channel information of use and can improve DL EE.
But, UL bandwidth B uLthe DL bandwidth B that can be used for DL transfer of data can be reduced dL.The UL bandwidth used is larger, remaining DL bandwidth B dLless, this can damage DLEE then.In other words, when considering the rule that DL EE optimizes, the B for transfer of data in network 100 may be caused to the restriction of total system bandwidth B dLwith the B transmitted for CSI uLbetween competition.It should be noted that to exist between UL bandwidth and DL EE and weigh.Similarly, due to UL bandwidth B uLrestriction, between the CSI feedback bandwidth of different UEs exist competition.
Consider based on this, propose the EE optimal solution of embodiments of the invention.
Fig. 2 shows the indicative flowchart of the method 200 of control channel status information feedback according to an embodiment of the invention.
As shown in Figure 2, after method 200 starts, in step S201, determine multiple CSI feedback speed based on system bandwidth, to maximize DL EE, each CSI feedback speed wherein in multiple CSI feedback speed is used for feeding back to CSI to BS by corresponding UE.
In an embodiment of the present invention, the CSI feedback speed for a UE determines based on the CSI feedback speed for other UE, because as mentioned above due to UL bandwidth B uLrestriction and between the CSI feedback bandwidth of different UEs exist competition.Describe the example that is embodied as with wireless network as shown in Figure 1 in detail embodiments of the invention below.But, it will be appreciated by those skilled in the art that enforcement of the present invention is not limited to ad hoc wireless networks, but any wireless network can be applied to.
As shown in fig. 1, wireless network 100 comprises multiple UE (such as M UE) and BS, and has system bandwidth B.In the network 100, BS transmits data to UE in DL, and UE feeds back CSI to BS simultaneously, can obtain the CSI performed needed for the process of such as precoding, to improve DL EE to make BS.DL bandwidth B is shared in DL transmission for all UE dL, and UL bandwidth B is shared in the transmission of the CSI feedback of UE uL=B-B dL.According to the Optimality Criteria of DL EE, the problem optimizing DL EE can be formulated as minor function (1):
max p k B DL Σ k = 1 M R k B Σ k = 1 M ( p k + p 0 ) - - - ( 1 )
Wherein R krepresent the data rate of every Hz from BS to UE, P krepresent the transmitted power of the every Hz for UE k that BS uses, and P 0it is the firm power that hardware consumes.
As mentioned above, CSI feedback can consume part system bandwidth B, sends and can improve DL EE.In economics, well-known Stark Burger (Stackelberg) theory of games is often applied to communication technical field, to solve the problem how balancing supply and demand.According to Stackelberg theory of games, certain cost should be paid to CSI feedback.Therefore, in UE level, function (1) can be modified to minor function (2):
u k = ( B - α Σ k = 1 M b k ) R k B ( p k + p 0 ) - cα Σ k = 1 M b k - - - ( 2 )
Wherein u krepresent the expense of UE k, α represents in order to by the zoom factor of UL CSI feedback rate transition to frequency band, b kbe the feedback velocity for UE k, and c is cost factor, it represents the cost of the every Hz being used for CSI feedback.
In UE level, the solution optimizing DL EE can be formulated as minor function (3):
max b k ( max p k ( u k ) ) , ∀ k - - - ( 3 )
Wherein k is the integer from 1 to M.
And in BS level, function (1) can be modified to minor function (4):
u l = ( B - α Σ k = 1 m b k ) Σ k = 1 M R k B Σ k = 1 M ( p k + p 0 ) - - - ( 4 )
Wherein u lrepresent the expense of BS.
Correspondingly, the solution optimizing DL EE can be formulated as minor function (5):
max c ( u l ) - - - ( 5 )
In an embodiment of the present invention, given P kwhen with c, the CSI feedback speed for UE is determined by this UE.Such as, each UE determines its oneself b based on function (5) k.As mentioned above, when UE determines its oneself feedback velocity, it needs the feedback velocity knowing other UE.Correspondingly, alternative manner can be adopted to determine to implement this.After many iterations, the feedback velocity determined by corresponding UE can converge to stationary value.
Alternatively, the feedback velocity for a UE also can be determined based on function (5) by another different UEs.Alternatively, the CSI feedback speed for corresponding UE can be determined based on function (5) by BS.Those skilled in the art also can understand this and determine to be performed by the entity in UE or BS.
Example described above is based on given P kprovide with c.According to embodiments of the invention, parameter P kvariable with c, and can Optimal Parameters P kwith c to improve DL EE further.Fig. 3 shows the method 300 of control channel status information feedback according to another embodiment of the present invention, wherein determines P kto maximize DL EE further.Fig. 4 shows the method 400 of control channel status information feedback according to still another embodiment of the invention, wherein determines that c is to maximize DL EE further.
As shown in Figure 3, after method 300 starts, in step S301, determine that multiple CSI feedback speed is to maximize DL EE based on system bandwidth, each CSI feedback speed wherein in multiple CSI feedback speed is used for feeding back to CSI to BS by corresponding UE.Then, in step S302, determine multiple DL through-put power based on system bandwidth, to maximize DL EE, each DL through-put power wherein in multiple DL through-put power is used for transmitting DL data to corresponding UE by BS.In this example, such as b kand P ktwo parameters be variable.Below by description example implementations.
First, based on system bandwidth and given one group of DL through-put power, determine that one group of CSI feedback speed is to maximize DL EE, each CSI feedback speed wherein in this group CSI feedback speed is used for feeding back to CSI to BS by corresponding UE, and each DL through-put power in this group DL through-put power is used for transmitting DL data to corresponding UE by BS.Meanwhile, the peak value down link energy efficiency values corresponding with this group DL through-put power is determined.Determine that the specific implementation of CSI feedback speed is similar with the process described with reference to figure 2 based on given one group of downlink transmitted power, will no longer describe in detail it.
Next, the DL through-put power for corresponding subscriber equipment can be changed.It will be appreciated by those skilled in the art that can according to system configuration predefine DL through-put power in the wireless network.Then, based on given second group of DL through-put power, second group of CSI feedback speed and corresponding peak value down link energy efficiency values can be determined.In this way, multiple peak value down link energy efficiency values can be determined, and the descending energy efficiency values of each peak value corresponds to one group of CSI feedback speed and one group of DL through-put power.According to the DL EE principle of optimality, the one group channel state information feedback rate corresponding with maximum downlink energy efficiency values and one group of downlink transmitted power should be confirmed as final CSI feedback speed and final DL through-put power.
Equally, can be determined by this UE or another different UE for the CSI feedback speed of a UE and DL through-put power.Alternatively, can be determined by BS for the CSI feedback speed of corresponding UE and DL through-put power.Those skilled in the art can also understand this and determine to be performed by the entity in UE or BS.
In addition, owing to there being such as b kand P ktwo Variables, increases for this operation complexity exponentially determined.In order to simplify the operation of UE or BS, can be performed this by UE and BS with distribution pattern and determining.Such as, for any given P k, UE determines the b of its correspondence based on function (3) k, BS determines final b based on function (5) based on the determined result of UE then kand P k.
Now, describe based on such as b with reference to Fig. 4 k, P kwith the method for three variable element control channel status information feedbacks of c.
With reference to figure 4, show the exemplary process diagram of the method 400 of control channel status information feedback according to still another embodiment of the invention.
As shown in Figure 4, after method 400 starts, in step S401, obtain the multiple cost factors being used for information feedback.At this, cost factor is represented by c, and it represents the cost of the every Hz being used for CSI feedback as mentioned above.In an embodiment of the present invention, cost factor c obtains according to system configuration.
Then, in step S402, multiple CSI feedback speed and multiple DL through-put power is determined based on system bandwidth and multiple cost factor, to maximize DL EE, each CSI feedback speed wherein in multiple CSI feedback speed is used for feeding back to CSI to BS by corresponding UE, and each DL through-put power in multiple DL through-put power is used for transmitting DL data to corresponding UE by BS.Below example implementations will be described.
First, based on a cost factor in system bandwidth and multiple cost factor, determine one group of CSI feedback speed and one group of DL through-put power, to maximize DL EE, each CSI feedback speed wherein in this group CSI feedback speed is used for feeding back to CSI to BS by corresponding UE, and each DL through-put power in this group DL through-put power is used for transmitting DL data to corresponding UE by BS.And, based on multiple cost factor, determine multiple peak value down link energy efficiency values, each peak value down link energy efficiency values wherein in multiple peak value down link energy efficiency values corresponds to a cost factor, and corresponds to one group of CSI feedback speed and one group of DL through-put power.Specifically, when given c, one group of CSI feedback speed and one group of DL through-put power can be determined.Meanwhile, corresponding peak value down link energy efficiency values can be determined.Therefore, based on multiple c, many group CSI feedback speed, many group DL through-put powers and multiple peak value down link energy efficiency values can be determined.The CSI feedback speed determined based on given cost factor c and the specific implementation mode of DL through-put power are similar to the process described with reference to figure 3, will be not described in detail.
Next, by the final CSI feedback speed be defined as from the corresponding one group of CSI feedback speed of the maximum downlink energy efficiency values in determined multiple peak value down link energy efficiency values and one group of DL through-put power for corresponding subscriber equipment and final DL through-put power.Specifically, as mentioned above, can determine multiple peak value down link energy efficiency values, each peak value down link energy efficiency values wherein corresponds to a cost factor.Then, at this, corresponding with maximum downlink energy efficiency values one group of CSI feedback speed and one group of DL through-put power are defined as final CSI feedback speed and final DL through-put power.
Equally, can be determined by UE or BS for the CSI feedback speed of a UE and DL through-put power.Alternatively, this determines to be performed with distribution pattern by UE and BS, to simplify the operation complexity of UE or BS.Such as, given c, UE are determined to the b of its correspondence based on function (3) kand P k, and BS determines final b based on function (5) based on the determined result of UE then kand P k.Those skilled in the art can also understand this and determine to be performed by the entity in UE or BS.
Fig. 5 shows according to an embodiment of the invention for the schematic block diagram of the device 500 of control channel status information feedback.
As shown in Figure 5, device 500 can comprise channel status determination module 501, through-put power determination module 502, cost acquisition module 503 and peak energy efficiency determination module 504.Equally, device 500 can be the entity of UE or BS or UE or BS.
In one embodiment of the invention, channel status determination module 501 is configured to determine that multiple CSI feedback speed is to maximize DL EE based on system bandwidth, and each CSI feedback speed wherein in multiple CSI feedback speed is used for feeding back to CSI to BS by corresponding UE.
In one embodiment of the invention, channel status determination module is also configured to the CSI feedback speed determining a UE based on the CSI feedback speed for other UE.
In one embodiment of the invention, through-put power determination module 502 is configured to determine that multiple DL through-put power is to maximize DL EE based on system bandwidth, and each DL through-put power wherein in multiple DL through-put power is used for corresponding UE communicating downlink data by BS.
In one embodiment of the invention, cost obtains module 503 and is configured to the multiple cost factors of acquisition for CSI feedback; And channel status determination module 501 is also configured to determine that multiple CSI feedback speed is to maximize DL EE based on system bandwidth and multiple cost factor; And through-put power determination module 502 is also configured to determine that multiple DL through-put power is to maximize DL EE based on system bandwidth and multiple cost factor.
In one embodiment of the invention, peak energy efficiency determination module 504 is configured to determine multiple peak value down link energy efficiency values based on multiple cost factor, and each peak value down link energy efficiency values wherein in multiple peak value down link energy efficiency values corresponds to a cost factor and corresponds to one group of CSI feedback speed and one group of DL through-put power; And channel status determination module 201 is also configured to determine that one group of CSI feedback speed is to maximize DL EE based on a cost factor in system bandwidth and multiple cost factor, and be defined as corresponding UE final CSI feedback speed by one group of CSI feedback speed corresponding from the maximum downlink energy efficiency values in multiple peak value down link energy efficiency values; And through-put power determination module 502 is also configured to determine that one group of DL through-put power is to maximize DL EE based on a cost factor in system bandwidth and multiple cost factor, and the one group of DL through-put power corresponding to maximum downlink energy efficiency values is defined as the final DL through-put power for corresponding UE.
In one embodiment of the invention, multiple cost factor obtains according to system configuration.
It should be noted that can be the corresponding function implementing to describe with reference to figs. 2 to Fig. 4 by the block configuration of device 500.Therefore, the feature that reference method 200 to 400 is discussed can be applied to the corresponding module of device 500, will be not described in detail.Be also noted that, the module of device 500 can be embodied as hardware, software, firmware or its combination.
Any element in each element shown in the drawings or described here may be embodied as hardware, software, firmware or its combination.Such as, some element can be implemented in specialized hardware, and implement other elements, although the present invention is not limited thereto in software, program code and the firmware that can be performed by controller, processor, microprocessor or other equipment.Specialized hardware element should be interpreted as exclusively referring to can the hardware of executive software, and can imply and comprise but not restricting data signal processor (DSP) hardware, application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA), read-only memory (ROM), random access memory (RAM), non-volatile memories or other physical hardware components or module.The element implemented in software, program code and firmware can be exercisable instruction, makes the function of processor executive component when being executed by a processor.Instruction can be stored on the readable memory device of processor.Some examples of memory device are digital or the magnetic storage medium of solid-state memory, such as Disk and tape, hard disk driver or the readable digital data storage medium of light.
In the description, some feature described in the context of independently embodiment can also be implemented in single embodiment in combination.Further, each feature described in the context of single embodiment can also be implemented in multiple embodiment independently or be implemented in any suitably sub-portfolio.And; although feature may be described to above operate with the form of certain combination; and it is so initially claimed; but in some cases from combination required for protection one or more features can with this composition independency implement, and combination required for protection can for the modification of sub-portfolio or sub-portfolio.Similarly, although operation is drawn with certain order in the accompanying drawings, this is not appreciated that these operate with shown certain order or sequentially perform, or performs all operations illustrated, to obtain the result expected.This operation can also perform with the order replaced.In some cases, multitask and parallel processing may be useful.
Various amendment and the adjustment of embodiments of the invention can be clearly to those skilled in the art.Although there is described herein specific embodiment, scope of the present invention is not limited to those specific embodiments.Scope of the present invention is limited by claim hereinafter and equivalents thereof.Verb " comprises " and paradigmatic use is not got rid of and be there is element outside the element described in claim or step or step.Indefinite article "a" or "an" before element or step is not got rid of and be there is multiple such element or step.Although be employed herein specific term, they are only using on general significance and describing significance, and have no intention to limit.

Claims (12)

1. a method for control channel status information feedback, comprising:
Determine that multiple channel state information feedback rate is to maximize down link energy efficiency based on system bandwidth, each channel state information feedback rate in described multiple channel state information feedback rate is used for base station feedback letter in reply channel state information by corresponding subscriber equipment.
2. method according to claim 1, also comprises:
Determine that multiple downlink transmitted power is to maximize down link energy efficiency based on described system bandwidth, each downlink transmitted power in described multiple downlink transmitted power is used for corresponding user device transmissions down link data by described base station.
3. method according to claim 2, comprising:
Obtain the multiple cost factors being used for information feedback;
Determine that described multiple channel state information feedback rate and described multiple downlink transmitted power are to maximize down link energy efficiency based on described system bandwidth and described multiple cost factor.
4. method according to claim 3, also comprises:
Determine that one group of channel state information feedback rate and one group of downlink transmitted power are to maximize down link energy efficiency based on a cost factor in described system bandwidth and described multiple cost factor, each channel state information feedback rate in described one group of channel state information feedback rate is used for described base station feedback letter in reply channel state information by corresponding subscriber equipment, and each downlink transmitted power in described one group of downlink transmitted power is used for corresponding user device transmissions down link data by described base station;
Determine multiple peak value down link energy efficiency values based on described multiple cost factor, each peak value down link energy efficiency values in described multiple peak value down link energy efficiency values corresponds to a cost factor and corresponds to one group of channel state information feedback rate and one group of downlink transmitted power; And
Described multiple channel state information feedback rate and described multiple downlink transmitted power is defined as by with from the corresponding described one group of channel state information feedback rate of the maximum downlink energy efficiency values in described multiple peak value down link energy efficiency values and described one group of downlink transmitted power.
5. the method according to claim 3 or 4, wherein said multiple cost factor obtains according to system configuration.
6. method according to claim 1, also comprises:
The channel state information feedback rate of a subscriber equipment is determined based on the channel state information feedback rate for other subscriber equipmenies.
7., for a device for control channel status information feedback, comprising:
Channel status determination module, be configured to determine that multiple channel state information feedback rate is to maximize down link energy efficiency based on system bandwidth, each channel state information feedback rate in described multiple channel state information feedback rate is used for base station feedback letter in reply channel state information by corresponding subscriber equipment.
8. device according to claim 7, comprising:
Through-put power determination module, be configured to determine that multiple downlink transmitted power is to maximize down link energy efficiency based on described system bandwidth, each downlink transmitted power in described multiple downlink transmitted power is used for corresponding user device transmissions down link data by described base station.
9. device according to claim 8, comprising:
Cost obtains module, is configured to obtain the multiple cost factors for information feedback; And wherein
Described channel status determination module is also configured to determine that described multiple channel state information feedback rate is to maximize down link energy efficiency based on described system bandwidth and described multiple cost factor; And
Described through-put power determination module is also configured to determine that described multiple downlink transmitted power is to maximize down link energy efficiency based on described system bandwidth and described multiple cost factor.
10. device according to claim 9, comprising:
Peak energy efficiency determination module, be configured to determine multiple peak value down link energy efficiency values based on described multiple cost factor, each peak value down link energy efficiency values in described multiple peak value down link energy efficiency values corresponds to a cost factor and corresponds to one group of channel state information feedback rate and one group of downlink transmitted power; And wherein
Described channel status determination module is also configured to determine that one group of channel state information feedback rate is to maximize down link energy efficiency based on a cost factor in described multiple cost factor of described system bandwidth and acquisition, and the described one group channel state information feedback rate corresponding with from the maximum downlink energy efficiency values in described multiple peak value down link energy efficiency values is defined as described multiple channel state information feedback rate; And
Described through-put power determination module is also configured to determine that one group of downlink transmitted power is to maximize down link energy efficiency based on a cost factor in described system bandwidth and described multiple cost factor, and the described one group downlink transmitted power corresponding with described maximum downlink energy efficiency values is defined as described multiple downlink transmitted power.
11. devices according to claim 9 or 10, wherein said multiple cost factor obtains according to system configuration.
12. devices according to claim 7, wherein said channel status determination module is also configured to the channel state information feedback rate determining a subscriber equipment based on the channel state information feedback rate for other subscriber equipmenies.
CN201280077388.4A 2012-11-29 2012-11-29 Method and apparatus for controlling channel state information feedback Pending CN104823489A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2012/085577 WO2014082265A1 (en) 2012-11-29 2012-11-29 Method and apparatus for controlling channel state information feedback

Publications (1)

Publication Number Publication Date
CN104823489A true CN104823489A (en) 2015-08-05

Family

ID=50827056

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201280077388.4A Pending CN104823489A (en) 2012-11-29 2012-11-29 Method and apparatus for controlling channel state information feedback

Country Status (2)

Country Link
CN (1) CN104823489A (en)
WO (1) WO2014082265A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111800177A (en) * 2019-08-16 2020-10-20 维沃移动通信有限公司 Channel State Information (CSI) feedback method, device, equipment and medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109618351B (en) * 2019-01-09 2022-01-07 南京邮电大学 Resource allocation method in heterogeneous network based on stackelberg game

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102255685A (en) * 2010-05-17 2011-11-23 华为技术有限公司 CSI (Channel State Information) feeding back and acquiring method, UE (User Equipment) and base station
WO2012112455A1 (en) * 2011-02-14 2012-08-23 Qualcomm Incorporated Selecting antenna ports for reference signal based on mobility and csi feedback in wireless networks with distributed remote radio heads
CN102802241A (en) * 2012-08-15 2012-11-28 西南交通大学 High-energy-efficiency wireless relay selection method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102255685A (en) * 2010-05-17 2011-11-23 华为技术有限公司 CSI (Channel State Information) feeding back and acquiring method, UE (User Equipment) and base station
WO2012112455A1 (en) * 2011-02-14 2012-08-23 Qualcomm Incorporated Selecting antenna ports for reference signal based on mobility and csi feedback in wireless networks with distributed remote radio heads
CN102802241A (en) * 2012-08-15 2012-11-28 西南交通大学 High-energy-efficiency wireless relay selection method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111800177A (en) * 2019-08-16 2020-10-20 维沃移动通信有限公司 Channel State Information (CSI) feedback method, device, equipment and medium
CN111800177B (en) * 2019-08-16 2023-07-25 维沃移动通信有限公司 Channel State Information (CSI) feedback method, device, equipment and medium

Also Published As

Publication number Publication date
WO2014082265A1 (en) 2014-06-05

Similar Documents

Publication Publication Date Title
KR102449151B1 (en) Apparatus and method for power control, reporting and uplink transmission
Ho et al. Energy-saving massive access control and resource allocation schemes for M2M communications in OFDMA cellular networks
JP7308858B2 (en) Transmission mode decision method and equipment
CN101512991B (en) A method and apparatus for fast other sector interference (OSI) adjustment
EP2491750B1 (en) Methods and arrangements in a communication network system
CN101711054B (en) Method and system for controlling long term evolution (LTE) uplink power
CN102687568B (en) Adaptive scheduling data transmission based on the transmission power and the number of physical resource blocks
CN103124428B (en) Method and device for controlling uplink power
US20150327187A1 (en) Method and apparatus for reporting power headroom
CN104661316A (en) Sending method and device for scheduling request under carrier aggregation, and terminal
CN109088663B (en) Method and device for power adjustment in UE and base station
CN102439895A (en) Uplink scheduling support in multi-carrier wireless communication systems
CN102378341A (en) Uplink power control method and device
CN105075137A (en) Communication system
EP3272042B1 (en) Access node and method for adapting a reporting period for a user equipment
CN102869080B (en) Method and device for controlling uplink power
CN107734622A (en) Ascending power control method and device
CN113348711B (en) Channel state assessment and reporting scheme in wireless communication
US10986630B2 (en) Method for scheduling transmission in wireless communications system, and device
CN108024280B (en) Method and device for feeding back channel state information
JP5089754B2 (en) Mobile communication system, base station, and transmission power control method
CN105228234A (en) Interference control method and equipment, base station
Hadzi-Velkov et al. Multiple-access fading channel with wireless power transfer and energy harvesting
WO2011013781A1 (en) Wireless base station and communication control method
EP2904857B1 (en) Uplink power control for machine type communication devices

Legal Events

Date Code Title Description
PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150805

WD01 Invention patent application deemed withdrawn after publication