CN102695261B - Control method, apparatus and system of uplink power - Google Patents
Control method, apparatus and system of uplink power Download PDFInfo
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- CN102695261B CN102695261B CN201110069073.2A CN201110069073A CN102695261B CN 102695261 B CN102695261 B CN 102695261B CN 201110069073 A CN201110069073 A CN 201110069073A CN 102695261 B CN102695261 B CN 102695261B
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Abstract
The invention discloses a control method, an apparatus and a system of uplink power, wherein the method comprises that: a terminal-side receives downlink reference signals of all coordinated base stations and obtains corresponding path loss information of all the coordinated base stations; the terminal side performs weighted processing of the corresponding path loss information of all the coordinated base stations; and the terminal side calculates uplink transmitted power by taking the results after being weighted processed as a path loss factor controlled by the uplink power. The control method, the apparatus and the system of uplink power in the invention can guarantee the terminal data to be better received by the coordinated base station clusters and realize satisfying the requirement of the uplink power of a coordinated multiple point system, because the path loss weighted values from the terminal side to each coordinated base station are synthetically considered.
Description
Technical field
The present invention relates to wireless communication technology in the communications field, particularly, relate to a kind of ascending power control method, Apparatus and system.
Background technology
Fig. 1 is traditional non-cooperating system schematic, and as shown in Figure 1, the serving BS of user 1 is base station 1, and the serving BS of user 2 is base stations 2, and the serving BS of user 3 is base stations 3.The uplink signal that user 1, user 2 and user 3 launch, base station 1, base station 2 and base station 3 can receive simultaneously.
Current uplink power control formula is:
P (i)=min{P
cMAX, 10log
10(M (i))+P
0+ α PL+ Δ
tF(i)+f (i) } formula 1
Wherein in formula 1, i represents subframe numbers; P
cMAXit is end side maximum transmit power; M (i) is the number of the Resource Block (Resource Block is called for short RB) that this terminal is assigned with at present sub-frame; P
0it is the nominal power of the semi-static configuration of system; α is the path loss weighted factor of high-rise configuration, value between 0 ~ 1; PL is the path loss that terminal arrives main serving BS; Δ
tFi () is the power adjusting factor based on modulation coding mode (Modulation and Coding Scheme is called for short MCS); F (i) is closed power correction factor.
Shown in Fig. 1, the uplink closed loop process of traditional non-cooperating system as shown in Figure 2, comprising:
(1) terminal obtains the power control factor P that base station issues
cMAX, P
0, α.
(2) terminal measures downlink reference signal, obtains main serving BS, as the path loss information PL of base station in Fig. 21;
(3) Radio Resource, the MCS grade of use, the Closed-cycle correction factor of main serving BS notification terminal distribution; Mainly comprise the following steps:
The uplink reference signals that the main serving BS measuring terminals of A sends, determines the MCS of this terminal uplink data channel;
The main serving BS of B, according to the MCS grade of terminal, carries out ascending wireless resource distribution;
The main serving BS of C is according to the terminal feedback information determination Closed-cycle correction factor;
(4) information that notifies according to main serving BS of terminal, utilizes power control formula 1 to determine uplink transmission power;
(5) terminal sends data in the respective resources of distributing;
(6) data channel is detected in base station, completes the reception of upstream data.
Along with collaboration type multiple spot (Coordinated Multiple Point, be called for short CoMP) development of transmission technology, as shown in Figure 3, multiple base station (or multiple radio-frequency nodes zoomed out) forms cooperative base station bunch, composition cooperation cell, the Serving cell set of all base stations in group, carry out terminal pairing and Resourse Distribute to each terminal be in cooperation cell is unified, each cooperative base station matches result according to terminal, and the upward signal of pairing terminal is carried out associating reception.Such as, base station 1 in Fig. 3, base station 2 and base station 3, or base station 4, base station 5 and base station 6 form cooperative base station bunch respectively, the device being responsible for combined signal process in each cooperative base station bunch can be arranged on one of them base station, also can be arranged in the independent net-work entities that is connected with each base station and core net.
Realizing in process of the present invention, inventor finds that the uplink power control mode of non-cooperating system in prior art cannot meet the demand of CoMP system to uplink transmission power, if other base stations such as still adopting existing power control mode may cause cooperating cannot the correct problem such as receiving terminal data.
Summary of the invention
The first object of the present invention proposes a kind of ascending power control method, to realize meeting the requirement of Synergistic multi-point system ascending power.
The second object of the present invention proposes a kind of terminal, to realize the requirement of Synergistic multi-point system ascending power.
The third object of the present invention proposes a kind of network side apparatus, to realize the requirement of Synergistic multi-point system ascending power.
The fourth object of the present invention proposes a kind of upstream power control system, to realize the requirement of Synergistic multi-point system ascending power.
For realizing above-mentioned first object, according to an aspect of the present invention, providing a kind of ascending power control method, comprising: end side receives the downlink reference signal of all cooperative base station, obtaining the information on path loss that all cooperative base station are corresponding; The end side information on path loss corresponding to all cooperative base station is weighted process; End side is using the path loss factor calculating uplink transmission power of the result after described weighting process as uplink power control.
Can also comprise: end side obtains the modulating-coding MCS of the end side uplink data channels that network side cooperative base station is determined according to the uplink channel information and resource allocation information with other base station intercommunications in cooperative base station bunch
data.
For realizing above-mentioned first object, according to an aspect of the present invention, providing a kind of ascending power control method, comprising: network side cooperative base station receives uplink channel information and the resource allocation information of other base station intercommunications in cooperative base station bunch; Described cooperative base station, according to the described uplink channel information of intercommunication and resource allocation information, determines the modulating-coding MCS of end side uplink data channels
data.
Determine the modulating-coding MCS of end side uplink data channels
datacan also comprise: end side receives the downlink reference signal of all cooperative base station before, obtain the information on path loss that all cooperative base station are corresponding; The end side information on path loss corresponding to all cooperative base station is weighted process; End side is using the path loss factor of the result after described weighting process as uplink power control.
For realizing above-mentioned second object, according to another aspect of the present invention, providing a kind of terminal, comprising: communication unit, for receiving the downlink reference signal of all cooperative base station, obtaining the information on path loss that all cooperative base station are corresponding; Processing unit, is weighted process for the information on path loss corresponding to all cooperative base station; Determining unit, for using the result after described weighting process as uplink power control path loss factor calculate uplink transmission power.
For realizing above-mentioned 3rd object, according to another aspect of the present invention, providing a kind of network side apparatus, comprising: communication unit, for receiving uplink channel information and the resource allocation information of other base station intercommunications in cooperative base station bunch; Determining unit, for according to the described uplink channel information of intercommunication and resource allocation information, determines the modulating-coding MCS of end side uplink data channels
data, and by described communication unit transmitting terminal side.
Described communication unit can also receive the uplink reference signals that side sends; Described network side apparatus can also comprise: processing unit, for the described uplink reference signals sent according to end side, determines the modulating-coding MCS of end side ascending pilot channel
pilot; According to described MCS
pilotgrade, carries out allocation of radio resources.
For realizing above-mentioned 4th object, according to another aspect of the present invention, providing a kind of upstream power control system, comprising the terminal of the second object and the network side apparatus of the 3rd object.
The ascending power control method of various embodiments of the present invention, device and system, owing to having considered the path loss weighted value of end side to each cooperative base station, instead of the path loss information of main serving BS is only considered as prior art, it is hereby ensured the base station bunch better receiving terminal data of cooperation.The present invention's some embodiment another to obtain uplink channel information and the resource allocation information of other cooperative base station due to cooperative base station by intercommunication, can know the interfere information in cooperative base station bunch, thus obtain uplink data channels information more accurately.Therefore, the present invention can solve existing transmitted power only for compensating the path loss (less) of main serving BS, and terminal sends signal and jointly received by the multiple base stations cooperated in CoMP system, if other base stations (path loss is larger) still adopting existing power control scheme may cause cooperating cannot the technical problem of correct receiving terminal data.Cannot the information such as shared channel and Resourse Distribute between the base station that other embodiments of the present invention can also solve existing non-cooperating system, the interference that end side is subject to obtains by means of only long-time statistical, the technical problem causing the MCS grade determined to be inaccurate, meets the demand of CoMP system to uplink transmission power.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is traditional non-cooperating system schematic;
Fig. 2 is the uplink closed loop process schematic of non-cooperating system traditional shown in Fig. 1;
Fig. 3 is the cooperative multicast system schematic diagram of three base station collaborations;
Fig. 4 is according to ascending power control method embodiment one flow chart of the present invention;
Fig. 5 is according to ascending power control method embodiment two flow chart of the present invention;
Fig. 6 is according to ascending power control method embodiment three flow chart of the present invention;
Fig. 7 is according to ascending power control method embodiment four signaling process figure of the present invention;
Fig. 8 is Radio Resource, the MCS grade of use, the schematic diagram of the Closed-cycle correction factor that cooperative base station notification terminal of the present invention distributes;
Fig. 9 is according to terminal installation embodiment one schematic diagram of the present invention;
Figure 10 is the schematic diagram according to terminal installation embodiment two of the present invention;
Figure 11 is according to network side apparatus embodiment one schematic diagram of the present invention;
Figure 12 is according to network side apparatus embodiment two schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment of the method
Fig. 4 is according to ascending power control method embodiment one flow chart of the present invention.As shown in Figure 4, the present embodiment comprises:
Step S102: end side receives the downlink reference signal of all cooperative base station, obtains the information on path loss that all cooperative base station are corresponding; The path loss information group { PL that such as all cooperative base station are corresponding
1... PL
k..PL
n, N represents the number of all cooperative base station, PL
krepresent the path loss of end side to a kth base station;
Step S104: the end side information on path loss corresponding to all cooperative base station is weighted process, such as, the path loss of N number of cooperative base station of step 102 is weighted process
wherein β
kfor PL
kconfigurable weighted factor, such as can configure representative value 1//N;
Step S106: end side is using the path loss factor calculating uplink transmission power of the result after described weighting process as uplink power control.
Particularly, in step 106, all cooperative base station weighting results are substituted into uplink power control formula, then uplink transmission power becomes:
P (i)=min{P
cMAX, 10log
10(M (i))+P
0+ α f (P
lk)+Δ
tF(i)+f (i) } formula 2
Wherein, i represents subframe numbers; P
cMAXit is end side maximum transmit power; The number of M (i) RB that to be this end side be assigned with at present sub-frame; P
0it is the nominal power of the semi-static configuration of network side; α is the path loss weighted factor of network side configuration, value between 0 ~ 1; Δ
tFi () is the power adjusting factor based on modulating-coding MCS grade, Δ
tF(i)=g (MCS
data); F (i) is closed power correction factor.
In prior art, such as be applicable to Long Term Evolution (Long Term Evolution, being called for short LTE) uplink transmission power of system is only for compensating the path loss (less) of main serving BS, and terminal transmission signal is received jointly by the multiple base stations cooperated in CoMP system, if adopt the uplink power control mode of prior art, may cause other base stations cooperated, base station, edge as larger in path loss cannot correct receiving terminal data.The present embodiment, owing to considering the path loss information of all cooperative base station, can make the base station bunch better receiving terminal data cooperated, meet the ascending power requirement of CoMP system.
Fig. 5 is according to ascending power control method embodiment two flow chart of the present invention.Fig. 5 embodiment can composition graphs 4 embodiment, and the further improvement namely on Fig. 4 basis also can be improvement arranged side by side with Fig. 4 individually.As shown in Figure 5, the present embodiment comprises:
Step S202: the cooperative base station of network side receives uplink channel information and the resource allocation information of other base station intercommunications in cooperative base station bunch;
Step S204: cooperative base station, according to the uplink channel information of intercommunication and resource allocation information, determines the modulating-coding MCS of end side uplink data channels
data.
Due in prior art, such as, between the base station of LTE system cannot the information such as shared channel and Resourse Distribute, base station obtains by means of only long-time statistical the interference that end side is subject to, and causes the MCS grade determined to be inaccurate.The information such as the uplink channel information of communication mutually and Resourse Distribute are utilized between cooperative base station in the present embodiment, the uplink interference information in cooperative base station more accurately bunch can be obtained, thus MCS grade more accurately can be obtained, be applicable to ascending power demand in CoMP system.
Fig. 6 is according to ascending power control method embodiment three flow chart of the present invention.As shown in Figure 6, comprising:
Step S302: end side receives the downlink reference signal of all cooperative base station, obtains the information on path loss that all cooperative base station are corresponding; The path loss information group { PL that such as all cooperative base station are corresponding
1... PL
k..PL
n, N represents the number of all cooperative base station, PL
krepresent the path loss of end side to a kth base station;
Step S304: the end side information on path loss corresponding to all cooperative base station is weighted process, such as, the path loss of N number of cooperative base station of step 302 is weighted process
wherein β
kfor PL
kconfigurable weighted factor;
Step S306: the result after weighting process is calculated uplink transmission power as the path loss factor in uplink power control formula by end side;
Step S308: end side sends uplink reference signals to cooperative base station, as detection reference signal (Sounding Reference Signal is called for short SRS);
Step S310: cooperative base station, according to the uplink reference signals received, tentatively determines MCS and allocation of radio resources; Cooperative base station receives uplink channel information and the resource allocation information of other base station intercommunications in cooperative base station bunch;
Step S312: after the uplink channel information that cooperative base station receives other base stations and resource allocation information, can obtain disturbed condition in cooperative base station bunch, redefine the modulating-coding MCS of end side uplink data channels
data, and send to end side;
Step S314: terminal is according to step S306 path loss factor and MCS
data, utilize following formulae discovery ascending power:
P (i)=min{P
cMAX, 10log
10(M (i))+P
0+ α f (PL
k)+Δ
tF(i)+f (i) } formula 3
Wherein, i represents subframe numbers; P
cMAXit is end side maximum transmit power; The number of M (i) the Resource Block RB that to be this end side be assigned with at present sub-frame; P
0it is the nominal power of the semi-static configuration of network side; α is the path loss weighted factor of network side configuration, value between 0 ~ 1; F (i) is closed power correction factor;
for the weighted results value of all cooperative base station respective path loss, N represents the number of all cooperative base station, PL
krepresent the path loss of end side to a kth base station, β
kfor PL
kconfigurable weighted factor.
Δ
tF(i)=g (MCS
data) be power adjusting factor based on modulating-coding MCS.
Fig. 7 is according to ascending power control method embodiment four signaling process figure of the present invention, as shown in Figure 7, comprising:
(1) end side terminal obtains by power control instruction the power control factor P that cooperative base station (main serving BS) issues
cMAX, P
0, α;
(2) end side measures the downlink reference signal of all cooperative base station, obtains path loss (i.e. path loss) information { PL of each cooperative base station
1... PL
k..PL
n, end side considers the weighting result that multiple path loss information obtains multiple path loss
wherein β
kfor PL
kconfigurable weighted factor;
(3) Radio Resource, the MCS grade of use, the Closed-cycle correction factor of the distribution of cooperative base station notification terminal;
Specifically comprise:
The uplink reference signals that A cooperative base station measuring terminals sends, according to the Signal to Interference plus Noise Ratio (SINR of the channel quality calculating pilot channel that uplink reference signals is measured
pilot), map the MCS obtaining this terminal uplink pilot channel
pilot;
Mapping mode can have a variety of, such as: SINR (-10 ,-7] within the scope of dB, the index of MCS gets 3; (-7 ,-4] within the scope of dB, the index of MCS gets 4; Or a fixed Block Error Rate, select the highest MCS meeting thresholding;
B cooperative base station is according to the MCS tentatively determined
pilotgrade, carries out ascending wireless resource distribution;
C cooperative base station receives the information such as up channel, Resourse Distribute that in cooperative base station bunch, other cooperative base station communicate mutually, thus obtain disturbed condition in cooperative base station bunch more accurately, according to up channel and the resource allocation conditions of all cooperative base station (comprising this base station) in cooperative base station bunch, recalculate the Signal to Interference plus Noise Ratio SINR of a data channel
data, map and obtain uplink data channels information MCS
data;
Mutual communication between cooperative base station can be as shown in Figure 3, and information is sent to a center processing unit by 3 base stations; Also can be that information is sent to base station 3 by base station 1 and base station 2, information be sent to base station 2 by base station 1 and base station 3, and information is sent to base station 1 by base station 2 and base station 3.
D cooperative base station is according to the end side feedback information determination Closed-cycle correction factor.
Wherein, step (3) illustrates by Fig. 8, as shown in Figure 8, frequency resource is supposed to be divided into 10 pieces, 10 service terminals are had under each base station, once transmission in, base station according to the performance of each terminal on different resource block, by terminal distribution in different frequency resource block.
In Fig. 8, base station A, B, C form cooperative base station bunch, the main serving BS of user terminal 1 (being called for short user 1) is A, and the main serving BS of user terminal 2 (being called for short user 2) is B, and the main serving BS of user terminal 3 (being called for short user 3) is C.
A) cooperative base station A is according to the ascending pilot frequency reference signal of user 1, user 2, user 3 transmission, estimates up channel matrix H
a1, H
a2, H
a3, and the interfere information utilizing long-time statistical average (now base station A do not know the interference of user 1 is from which user), each Resource Block estimates the Signal to Interference plus Noise Ratio SINR of user 1
pilot1, and then be mapped as MCS
pilot1; The ascending pilot frequency reference signal that cooperative base station B sends according to user 1, user 2, user 3, estimates up channel matrix H
b1, H
b2, H
b3, and the interfere information utilizing long-time statistical average, each Resource Block estimates the Signal to Interference plus Noise Ratio SINR of user 2
pilot2, and then be mapped as MCS
pilot2; The ascending pilot frequency reference signal that cooperative base station C sends according to user 1, user 2, user 3, estimates up channel matrix H
c1, H
c2, H
c3, and the interfere information utilizing long-time statistical average, each Resource Block estimates the Signal to Interference plus Noise Ratio SINR of user 3
pilot3, and then be mapped as MCS
pilot3.
B) base station A (B, C) is according to MCS
pilot1(MCS
pilot2, MCS
pilot3) Resourse Distribute is carried out to user 1 (2,3).Suppose that user 1,2 and 3 distributes on the same resource, the data that so user 2,3 sends just are equal to interference signal to 1.
C) due in CoMP system, base station A, B, C can schedule information and channel informations alternately, and that is compared to a) step, base station A knows user 1, and user 2,3 is interfere informations, so now estimate accurate SINR again
data1, be mapped as MCS
data1.
Because the present embodiment obtains disturbed condition accurately bunch by step c, therefore, the MCS that the present embodiment calculates
datacompared to MCS
pilotmore be close to data channel quality, thus the systematic function of optimization can be obtained.Such as: if MCS
pilot> MCS
data, use MCS
pilotmay be led to errors demodulation; If MCS
pilot< MCS
data, use MCS
pilotthroughput of system then can be made on the low side.
(4) the cooperative base station Radio Resource, the MCS that have distributed of notification terminal side respectively
datagrade, the Closed-cycle correction factor, the information that end side notifies according to cooperative base station, utilize power control formula determination uplink transmission power, in CoMP system, power dominated formulate is:
P(i)＝min{P
CMAX，10log
10(M(i))+P
0+α·f(PL
k)+Δ
TF(i)+f(i)}
Wherein, i represents subframe numbers; P
cMAXit is end side maximum transmit power; The number of M (i) the Resource Block RB that to be this terminal be assigned with at present sub-frame; P
0it is the nominal power of the semi-static configuration of system; α is the path loss weighted factor of high-rise configuration, value between 0 ~ 1; F (i) is closed power correction factor;
n represents the number of all cooperative base station, PL
krepresent the path loss of end side to a kth base station, β
kfor PL
kconfigurable weighted factor, as being averaged each base station circuit loss value, then β
k=1/N;
Δ
tF(i)=g (MCS
data) be based on data channel MCS
datapower adjusting factor.
In this formula, except path loss factor and MCS
dataoutward, all the other parameters are consistent with the acquisition of prior art, do not elaborate.
(5) end side terminal sends data in the respective resources of distributing;
(6) data channel is detected in base station, completes the reception of uplink data channels.
Due in the up-link of CoMP, the transmission signal demand of terminal correctly receives in multiple base station side of cooperation; The path loss of main serving BS is normally minimum, iff the compensation carrying out transmitted power for the path loss to main serving BS, then and may cannot correct receiving terminal signal in the larger cooperative base station side of path loss; If carry out transmitted power compensation to maximum path loss, then can cause the significantly lifting of terminal transmitted power, thus cause the significantly increase of power consumption and entire system interference (especially the interference of edge termination).The present embodiment step (2) has considered the path loss weighted value of terminal to each cooperative base station, can guarantee the base station bunch better receiving terminal data cooperated, as shown in following table 1 test data.Can be found out by table 1, the simulation experiment result of this patent is compared by main serving BS path loss and using the simulation experiment result of maximum circuit loss value as the path loss factor of power control formula with in prior art, and the present embodiment can be guaranteed better to receive data.
In addition, the present embodiment is also considered in cooperative base station can the resource allocation information of intercommunication, obtains uplink data channels information more accurately, thus can obtain the systematic function of optimization, in throughput of system and entire system interference, find balance point.
Table 1 experimental result of the present invention and maximum circuit loss value are as the comparing result of the path loss factor of uplink power control formula
Device embodiment
Fig. 9 is according to terminal installation embodiment one schematic diagram of the present invention, as shown in Figure 9, comprising:
Communication unit 2, for receiving the downlink reference signal of all cooperative base station, obtains the information on path loss that all cooperative base station are corresponding;
Processing unit 4, is weighted process for the information on path loss corresponding to all cooperative base station;
Determining unit 6, for using the path loss factor of the result after described weighting process as uplink power control.
Figure 10 is according to terminal installation embodiment two schematic diagram of the present invention, and wherein to the further refinement of the determining unit of Fig. 9, the determining unit 6 of the present embodiment comprises:
First determination module 62, for using the path loss factor of the result after described weighting process as uplink power control
wherein N represents the number of all cooperative base station, PL
krepresent the path loss of end side to a kth base station, β
kfor PL
kconfigurable weighted factor.
See Fig. 4 and Fig. 5, the present embodiment communication unit 2 can also receive the modulating-coding MCS of the uplink power control that network side cooperative base station sends
data; Determining unit 6 determines the modulating-coding MCS of uplink power control further
datapower adjusting factor.Now, determining unit 6 can also comprise:
Second determination module 64, for determining the modulating-coding MCS based on uplink data channels
datapower adjusting factor Δ
tF(i)=g (MCS
data).
Determining unit can also comprise:
Computing module, for according to following formulae discovery uplink transmission power:
P(i)＝min{P
CMAX，10log
10(M(i))+P
0+α·f(PL
k)+Δ
TF(i)+f(i)}
Wherein, i represents subframe numbers; P
cMAXit is end side maximum transmit power; The number of M (i) the Resource Block RB that to be this terminal be assigned with at present sub-frame; P
0it is the nominal power of the semi-static configuration of system; α is the path loss weighted factor of high-rise configuration, value between 0 ~ 1; Δ
tF(i)=g (MCS
data) be modulating-coding MCS based on uplink data channels
datapower adjusting factor; F (i) is closed power correction factor;
for the weighted results value of all cooperative base station respective path loss, N represents the number of all cooperative base station, PL
krepresent the path loss of end side to a kth base station, β
kfor PL
kconfigurable weighted factor.
Certain computing module can also be positioned at outside determining unit 6, realizes the function calculated separately.
The data that the processing unit 4 of the present embodiment can also receive communication unit are carried out signaling resolution and are carried out signaling encapsulation to the uplink transmission power information after computing module 66 calculates, and send network side etc. by communication unit 2.This distortion that can be able to be realized by art technology according to the present embodiment and said method embodiment for those skilled in the art or explanation, do not do too much explanation.
Figure 11 is according to network side apparatus embodiment one schematic diagram of the present invention.As shown in figure 11, the present embodiment comprises:
Communication unit 1, for receiving uplink channel information and the resource allocation information of other base station intercommunications in cooperative base station bunch;
Determining unit 5, for according to the described uplink channel information of intercommunication and resource allocation information, determines the modulating-coding MCS of end side uplink data channels
data, and by described communication unit 1 transmitting terminal side.
As shown in figure 11, communication unit 1 goes back the uplink reference signals that receiving terminal side sends; Network side apparatus may further include: processing unit 3, for the described uplink reference signals sent according to end side, determines the modulating-coding MCS of end side ascending pilot channel
pilot; According to described MCS
pilotgrade, carries out allocation of radio resources.
Figure 12 is that as shown in figure 12, determining unit 5 can also comprise according to network side apparatus embodiment two schematic diagram of the present invention:
Computing module 52, for according to the uplink channel information and resource allocation information with other base station intercommunications in cooperative base station bunch, the Signal to Interference plus Noise Ratio SINR of calculated data channel
data;
Determination module 54, for according to described Signal to Interference plus Noise Ratio SINR
datadetermine the modulating-coding MCS of end side ascending pilot channel
data, according to Signal to Interference plus Noise Ratio SINR
datamCS is determined in mapping
datamethod a lot, such as: SINR (-10 ,-7] within the scope of dB, the index of MCS gets 3; (-7 ,-4] within the scope of dB, the index of MCS gets 4.Or a fixed Block Error Rate, select the highest MCS meeting thresholding.
In above-described embodiment, network side apparatus can be base station.
Each embodiment of said method invention can realize in the device possessing structure shown in Fig. 9-Figure 11 structure chart, and said apparatus embodiment can be realized by embodiment of the method related description, no longer carries out repeated description to same or similar content at this.
System embodiment
Fig. 7 also as a system embodiment of the present invention, wherein, can comprise cooperative base station and end side, and its device inside can see shown in Fig. 9-12.
Technology described herein is implemented by various means.For example, these technology may be implemented in hardware, firmware, software or its combination.For hardware embodiments, processing unit etc. may be implemented in one or more application-specific integrated circuit (ASIC)s (ASIC), digital signal processor (DSP), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, electronic installation, other through design to perform in the electronic unit of function described herein or its combination.
For firmware and/or Software implementations, the module (such as, process, step, flow process etc.) of available execution function described herein implements described technology.Firmware and/or software code can store in memory and be performed by processor.Memory may be implemented in processor or processor outside.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. an ascending power control method, is characterized in that, comprising:
End side receives the downlink reference signal of all cooperative base station, obtains the information on path loss that all cooperative base station are corresponding;
The end side information on path loss corresponding to all cooperative base station is weighted process;
End side is using the path loss factor calculating uplink transmission power of the result after described weighting process as uplink power control;
Wherein, the information on path loss that end side is corresponding to all cooperative base station is in the following manner weighted process:
wherein N represents the number of all cooperative base station, PL
krepresent the path loss of end side to a kth base station, β
kfor PL
kconfigurable weighted factor;
According to following formulae discovery uplink transmission power:
P(i)＝min{P
CMAX,10log
10(M(i))+P
0+α·f(PL
k)+Δ
TF(i)+f(i)}，
Wherein, i represents subframe numbers; P
cMAXit is end side maximum transmit power; The number of M (i) the Resource Block RB that to be this end side be assigned with at present sub-frame; P
0it is the nominal power of the semi-static configuration of network side; α is the path loss weighted factor of network side configuration, value between 0 ~ 1; Δ
tFi () is the power adjusting factor based on modulating-coding MCS grade; F (i) is closed power correction factor;
The method also comprises:
End side obtains the modulating-coding MCS of the end side uplink data channels that network side cooperative base station is determined according to the uplink channel information and resource allocation information with other base station intercommunications in cooperative base station bunch
data.
2. ascending power control method according to claim 1, is characterized in that, also comprises:
The modulating-coding MCS of the modulating-coding determination uplink power control of the described uplink data channels that end side sends according to network side
datapower adjusting factor Δ
tF(i)=g (MCS
data).
3. an ascending power control method, is characterized in that, comprising:
Network side cooperative base station receives uplink channel information and the resource allocation information of other base station intercommunications in cooperative base station bunch;
Described cooperative base station, according to the described uplink channel information of intercommunication and resource allocation information, determines the modulating-coding MCS of end side uplink data channels
data;
Wherein, the modulating-coding MCS of described cooperative base station determination end side uplink data channels
dataalso comprise before:
The uplink reference signals that described cooperative base station sends according to end side, determines the modulating-coding MCS of end side ascending pilot channel
pilot;
Described cooperative base station is according to the modulating-coding grade MCS of described end side
pilot, carry out allocation of radio resources, the uplink channel information of self and resource allocation information sent to other base stations in cooperative base station bunch.
4. ascending power control method according to claim 3, is characterized in that, according to the uplink reference signals that end side sends, determines the modulating-coding MCS of end side ascending pilot channel
pilotcomprise:
The uplink reference signals that described cooperative base station sends according to end side, calculates the Signal to Interference plus Noise Ratio SINR of pilot channel
pilot;
Described cooperative base station is according to described Signal to Interference plus Noise Ratio SINR
pilotdetermine the modulating-coding MCS of end side ascending pilot channel
pilot.
5. ascending power control method according to claim 3, is characterized in that, cooperative base station, according to the described uplink channel information of intercommunication and resource allocation information, determines the modulating-coding MCS of end side uplink data channels
datacomprise:
Cooperative base station according to the uplink channel information and resource allocation information with other base station intercommunications in cooperative base station bunch, the Signal to Interference plus Noise Ratio SINR of calculated data channel
data;
According to described Signal to Interference plus Noise Ratio SINR
datadetermine the modulating-coding MCS of end side ascending pilot channel
data.
6. a terminal, is characterized in that, comprising:
Communication unit, for receiving the downlink reference signal of all cooperative base station, obtains the information on path loss that all cooperative base station are corresponding;
Processing unit, is weighted process for the information on path loss corresponding to all cooperative base station;
Determining unit, for using the result after described weighting process as uplink power control path loss factor calculate uplink transmission power;
Described determining unit comprises:
First determination module, for using the path loss factor of the result after described weighting process as uplink power control
wherein N represents the number of all cooperative base station, PL
krepresent the path loss of end side to a kth base station, β
kfor PL
kconfigurable weighted factor;
Described communication unit also receives the modulating-coding MCS of the uplink power control that network side cooperative base station sends
data;
Described determining unit is further according to the modulating-coding MCS of the modulating-coding determination uplink power control of described uplink data channels
datapower adjusting factor;
Described determining unit comprises:
Computing module, for according to following formulae discovery uplink transmission power:
P(i)＝min{P
CMAX,10log
10(M(i))+P
0+α·f(PL
k)+Δ
TF(i)+f(i)}
Wherein, i represents subframe numbers; P
cMAXit is end side maximum transmit power; The number of M (i) the Resource Block RB that to be this terminal be assigned with at present sub-frame; P
0it is the nominal power of the semi-static configuration of network side; α is the path loss weighted factor of network side configuration, value between 0 ~ 1; Δ
tF(i)=g (MCS
data) be modulating-coding MCS based on uplink data channels
datapower adjusting factor; F (i) is closed power correction factor;
for the weighted results value of all cooperative base station respective path loss, N represents the number of all cooperative base station, PL
krepresent the path loss of end side to a kth base station, β
kfor PL
kconfigurable weighted factor.
7. terminal according to claim 6, is characterized in that, described determining unit comprises:
Second determination module, for determining the modulating-coding MCS based on uplink data channels
datapower adjusting factor Δ
tF(i)=g (MCS
data).
8. a network side apparatus, is characterized in that, comprising:
Communication unit, for receiving uplink channel information and the resource allocation information of other base station intercommunications in cooperative base station bunch;
Determining unit, for according to the described uplink channel information of intercommunication and resource allocation information, determines the modulating-coding MCS of end side uplink data channels
data, and by described communication unit transmitting terminal side;
Described communication unit also receives the uplink reference signals that side sends;
Described network side apparatus also comprises:
Processing unit, for the described uplink reference signals sent according to end side, determines the modulating-coding MCS of end side ascending pilot channel
pilot; According to described MCS
pilotgrade, carries out allocation of radio resources.
9. network side apparatus according to claim 8, is characterized in that, described determining unit comprises:
Computing module, for according to the uplink channel information and resource allocation information with other base station intercommunications in cooperative base station bunch, the Signal to Interference plus Noise Ratio SINR of calculated data channel
data;
Determination module, for according to described Signal to Interference plus Noise Ratio SINR
datadetermine the modulating-coding MCS of end side ascending pilot channel
data.
10. network side apparatus according to claim 8, is characterized in that, described network side apparatus is base station.
11. 1 kinds of upstream power control system, is characterized in that, comprise the terminal of any one of claim 6-7 and the network side apparatus of any one of claim 8-10.
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| CN104041145B (en) * | 2012-12-20 | 2018-10-19 | 华为技术有限公司 | Information sending, receiving method and corresponding equipment |
| CN104349438B (en) * | 2013-07-24 | 2018-11-02 | 上海诺基亚贝尔股份有限公司 | The method for determining uplink power |
| CN104936275A (en) * | 2014-03-20 | 2015-09-23 | 中兴通讯股份有限公司 | Method and system for uplink power control, terminal and base station |
| CN108811064B (en) | 2014-09-28 | 2019-07-12 | 华为技术有限公司 | Uplink power configuration method and the network equipment |
| JP6508662B2 (en) | 2014-11-07 | 2019-05-08 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Wireless network coverage extension method, apparatus and system |
| US10499351B2 (en) | 2015-03-17 | 2019-12-03 | Huawei Technologies Co., Ltd. | Controller directives to enable multipoint reception via MCS and power constraints masks |
| CN104883726B (en) * | 2015-06-11 | 2018-11-13 | 武汉邮电科学研究院 | A kind of jamproof LTE ascending power control methods and system |
| CN107623942B (en) * | 2016-07-14 | 2022-06-17 | 中兴通讯股份有限公司 | Method and device for adjusting uplink power |
| WO2018171418A1 (en) * | 2017-03-24 | 2018-09-27 | 华为技术有限公司 | Power control method, terminal and network device |
| CN108632971A (en) | 2017-03-24 | 2018-10-09 | 华为技术有限公司 | Poewr control method, terminal and the network equipment |
| CN111835255B (en) * | 2019-04-17 | 2023-08-11 | 华北电力大学（保定） | PMSM torque ripple suppression method under stator current vector orientation in consideration of electrical loss |
| CN112822785A (en) * | 2021-01-14 | 2021-05-18 | 上海移远通信技术股份有限公司 | Data transmission method, device and system and readable storage medium |
| CN117998555A (en) * | 2022-11-04 | 2024-05-07 | 华为技术有限公司 | Uplink power control method and communication device |
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| TWI496490B (en) * | 2009-03-17 | 2015-08-11 | Interdigital Patent Holdings | Method and apparatus for uplink power control in multiple-input multiple-output |
| CN101662824B (en) * | 2009-09-11 | 2014-08-27 | 北京邮电大学 | Synergistic multi-point system, user equipment and uplink power control method |
| CN101945409B (en) * | 2010-09-03 | 2014-11-19 | 新邮通信设备有限公司 | Method and device for coordinating dynamic interference between neighboring cells of wireless communication system |
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