CN101527587A - Method, system and relay equipment for power control - Google Patents
Method, system and relay equipment for power control Download PDFInfo
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- CN101527587A CN101527587A CN200810101319A CN200810101319A CN101527587A CN 101527587 A CN101527587 A CN 101527587A CN 200810101319 A CN200810101319 A CN 200810101319A CN 200810101319 A CN200810101319 A CN 200810101319A CN 101527587 A CN101527587 A CN 101527587A
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Abstract
The embodiment of the invention discloses a method for power control in a multi-hop mobile communication system, which is used in a multi-hop mobile communication system consisting of a mobile station MS, relay station RS and a base station BS and comprises the following steps that: the RS receives an uplink signal sent by the mobile station MS, measures the uplink signal, acquires a power control command according to the result of the measurement and transmits the power control command to the MS; and the MS sets a transmission power according to the power control command. The embodiment of the invention also discloses a system for power control and a relay station capable of performing power control. The technical proposal disclosed in the embodiment of the invention can realize power control in an RS-based multi-hop mobile communication system.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to Poewr control method, system and trunking.
Background technology
In mobile communication system, power control is a measure of taking in order to overcome " near-far interference ", it is on the basis that indexs such as the received signal intensity of receiver end and/or signal to noise ratio are assessed, the change transmitting power compensates path loss and the decline in the wireless channel in good time, thereby both kept communication quality, and can not produce extra interference again other users in the same wireless channel.
Existing mobile communications system mostly is the cell mobile communication systems of single-hop, be travelling carriage (MobileStation, MS) with base station (Basic Station, BS) direct communication between and do not pass through intermediate equipment, Radio Link between MS and the BS is an access link, access link wherein is meant, starts from or end in the Radio Link of MS.
In the cell mobile communication systems of single-hop,, can adopt the open Loop Power control technical scheme for the power control in MS access network stage; Transfer of data for after the MS access network can adopt closed power control technology scheme; For Long Term Evolution (Long Term Evolution, LTE) system, because data and control information send on shared channel, what its power control techniques scheme adopted is the technical scheme of open loop and the control of closed loop joint Power, and its specific implementation method sees also Fig. 1.
Fig. 1 is the method schematic diagram of open loop and closed loop joint Power control in the LTE system, and as shown in Figure 1, this method comprises the steps:
1., the broadcast generation module of BS sends the broadcast that carries downlink reference signal by the downlink broadcast channel, the performance number, path compensation parameter etc. that also carry described downlink reference signal in this broadcast are used for the public information that power is adjusted.
The open Loop Power control module of MS is carried out the path loss measurement to the described downlink reference signal that receives, and carries out path loss estimation and compensation according to the described public information that is used for power control, calculates the output valve of open Loop Power control module.
Described path loss is measured, and is that MS comes the estimating down-ward link path loss values based on the difference of its downlink reference signal intensity that receives and described downlink reference signal transmitted power, thereby the upward signal transmitted power of MS is compensated.
For time division duplex (Time Division Duplex, TDD) system, uplink downlink is operated in same frequency range, so the deviation of uplink downlink path loss values is very little, the downlink path-loss value is replaced the uplink pathloss value, the error that is used for the upward signal transmitted power compensation of travelling carriage and produces can be ignored, and this error also can further be proofreaied and correct by closed power control.
For Frequency Division Duplexing (FDD) (Frequency Division Duplex, FDD) system, uplink downlink is operated in different frequency range, uplink downlink path loss values deviation is bigger, the downlink path-loss value is replaced the uplink pathloss value, the error that is used for the upward signal transmitted power compensation of MS and produces need be controlled by corrected value between the uplink downlink frequency or closed power and proofread and correct.
Open Loop Power control is unidirectional, do not need feedback, so real-time is good.In the LTE system, open Loop Power control is regular, can be the cycle, and is also aperiodic.
2., the power control command generation module of BS to the MS transmission power control commands, carries information such as the direction that power adjustment size, power adjust (transfer greatly still turn down power) by control channel in this power control command.The closed power control module of MS is adjusted the transmitting power of through-put power setting module according to the output valve of this power control command and open Loop Power control module.
Described power control command is measured by upstream data or the reference signal that send travelling carriage the base station, learns whether the travelling carriage uplink transmission power satisfies the demand of communication service, thereby produces according to certain criterion.Owing to have feedback information in open loop and the closed loop joint Power control technology scheme, so there is time delay in the power adjustment, dynamic range is little, precision is high.
Below in conjunction with Fig. 2, open loop in the LTE system and closed loop associating power control method are described in detail.
Fig. 2 is the method flow diagram of open loop and closed loop joint Power control in the LTE system, and as shown in Figure 2, this method specifically comprises the steps:
Usually BS periodically sends downlink reference signal, and MS can all measure all downlink reference signals, also can measure downlink reference signal according to some cycles or rule, thereby the path loss that carries out up link is estimated and compensation.
As seen, the accuracy of upstream data transmission power value depends on following two key factors: the one, in the open Loop Power control to the measurement of downlink reference signal and estimation and the compensation that obtain thus to the path loss of up link; The 2nd, in the closed power control to the signal quality measured and consequent power control command of upstream data.
In the mobile communication system in future, (Relay Station RS) enlarges the coverage of network, improves the throughput of system, forms the mobile communication system of multi-hop will to introduce via node.
RS is meant to possess the node of transmitting data and control signaling capability between node (as BS, RS, MS).Have flexible arrangement, characteristics that cost is low, can save the networking cost, improve transmission rate.In the multi-hop mobile communication system based on RS, MS and BS are by the RS indirect communication, that is, the Radio Link between MS and the BS comprises access link and repeated link.Repeated link wherein is meant, the Radio Link between Radio Link between BS and the RS or RS and the RS.
In the multi-hop mobile communication system based on RS, data between MS and the BS and control information all will be transmitted by RS.RS can be divided into transparent RS and nontransparent RS.
Fig. 3 is the application scenarios schematic diagram of RS.
Transparent RS is mainly used in the throughput of raising system, and it does not send the broadcasts such as descending synchronous signal channel, system configuration and resource allocation of self to BS.
Nontransparent RS is mainly used in the Service coverage expansion, and it sends the broadcasts such as descending synchronous signal channel, system configuration and resource allocation of self to BS.
In actual use, the coverage of transparent RS drops within the coverage of BS fully, and the coverage of nontransparent RS can have outside the coverage that partly or entirely is positioned at BS.
As seen, in the existing single-hop cell mobile communication systems, its power control techniques scheme only relates to the transmission of directly carrying out signal measurement and power control information between base station and the travelling carriage, and in the multi-hop cell mobile communication systems based on RS, carry out indirect communication by RS between BS and the MS, the signal measurement mechanism of therefore existing power control techniques scheme and power control information transmission can not adapt to the multi-hop cell mobile communication systems based on RS.
Summary of the invention
In view of this, the purpose of the embodiment of the invention is to provide Poewr control method, system and trunking, to realize power control in based on the multi-hop cell mobile communication systems of RS.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of Poewr control method is applied to comprise the multi-hop mobile communication system of mobile station MS, trunking RS and base station BS, and the method comprising the steps of:
RS receives the upward signal that MS sends, and described upward signal is measured, and obtains power control command according to measurement result, sends this power control command to described MS;
MS sets transmitting power according to described power control command.
A kind of Poewr control method is applied to comprise the multi-hop mobile communication system of MS, nontransparent RS and BS, and the method comprising the steps of:
MS receives the downlink reference signal that nontransparent RS sends, and described downlink reference signal is measured, and obtains the open loop power output valve according to measurement result;
MS sets transmitting power according to described open loop power output valve.
A kind of power control system, this system comprises RS and MS,
Described RS is used for, and receives the upward signal that MS sends, and described upward signal is measured, and obtains power control command according to measurement result, sends this power control command to described MS;
Described MS is used for, and sets transmitting power according to described power control command.
A kind of trunking RS, described RS comprise that power control command obtains the unit and power control command transmitting send the unit;
Described power control command obtains the unit and is used for, and receives the upward signal that MS sends, and described upward signal is measured, and obtains power control command according to measurement result;
Described power control command transmitting send the unit to be used for, and transmission power control commands obtains the power control command in the unit.
As seen from the above technical solution, in the technical scheme that the embodiment of the invention provided, by RS but not BS measures measurement result according to the upward signal that MS sends, RS obtains power control command according to this measurement result, described power control command is used for MS carries out the power adjustment, perhaps the downlink reference signal that nontransparent RS sends is measured measurement result by MS, MS obtains the open loop power output valve according to this measurement result, be used for MS and carry out the power adjustment, thereby realized power control at multi-hop cell mobile communication systems based on RS.
Description of drawings
Fig. 1 is the method schematic diagram of open loop and closed loop joint Power control in the LTE system;
Fig. 2 is the method flow diagram of open loop and closed loop joint Power control in the LTE system;
Fig. 3 is the application scenarios schematic diagram of RS;
Fig. 4 is the power control flow chart of the inventive method embodiment one;
Fig. 5 is the power control flow chart of the inventive method embodiment two;
Fig. 6 is among the inventive method embodiment two, and RS shifts to an earlier date the power control flow chart to the BS request resource;
Fig. 7 is among the inventive method embodiment two, and BS initiatively distributes to the power control flow chart that RS is used for the Radio Resource of transmission power control commands in advance;
Fig. 8 is the power control flow chart of the inventive method embodiment three;
Fig. 9 is the power control flow chart of the inventive method embodiment four;
Figure 10 is the structure chart of system embodiment of the present invention;
Figure 11 is the trunking structure chart of apparatus of the present invention embodiment one;
Figure 12 is the trunking structure chart of apparatus of the present invention embodiment two;
Figure 13 is the trunking structure chart of apparatus of the present invention embodiment three;
Figure 14 is the trunking structure chart of apparatus of the present invention embodiment four.
Embodiment
Because in the existing single-hop cell mobile communication systems, direct communication between BS and the MS, in the power control techniques scheme of single-hop cell mobile communication systems, by BS the upward signal that MS sends is measured, by measurement result rated output control command, and comprising MS, RS, in the multi-hop cell mobile communication systems of BS, data between MS and the BS need to transmit by RS, if still adopting BS to carry out upward signal measures, what then obtain is to arrive the measurement result of the upward signal of this up path of BS through RS, what this measurement result reflected is that RS is to the influence of this up path of BS to upward signal, after this measurement result being applied to the uplink power control of MS, what control is the power of MS to the upward signal of this up path of RS, MS is two incoherent paths to RS and RS to BS, it is to the difference that influences of upward signal, and therefore, the power control scheme in the single-hop cell mobile communication systems is not suitable for the multi-hop cell mobile communication systems.
For multi-hop cell mobile communication systems based on nontransparent RS, if in the open Loop Power control technical scheme, still adopt in the prior art, MS measures the reference signal that BS sends, and then obtain this scheme of open loop power output valve, then this open loop power output valve control is the upward signal power of MS to this up path of RS, the downlink path of BS to MS is uncorrelated with the up path of MS to RS, to the difference that influences of upward signal, therefore the multi-hop cell mobile communication systems that the open Loop Power control technical scheme in the single-hop cell mobile communication systems is applied directly to based on nontransparent RS also is inappropriate.
Based on above-mentioned analysis, embodiment provided by the present invention, provided in the technical scheme that realizes power control based on the multi-hop cell mobile communication systems of RS: measure according to the upward signal that MS sends by RS, obtain power control command according to measurement result, this power control command is used for MS carries out the power adjustment; Perhaps, the downlink reference signal that nontransparent RS sends is measured, obtained the open loop power output valve, set transmitting power according to this open loop power output valve by measurement result by MS.Because the technical scheme that the embodiment of the invention provides, all be that the signal in MS and this section of the RS path is measured, produce power control command or open loop power output valve according to measurement result, be used for MS and carry out power control, measured signal the path of process and MS carry out the path that the signal of power control will pass through and have correlation, therefore, use the disclosed technical scheme of the embodiment of the invention, can be implemented in the power control in the multi-hop cell mobile communication systems.
Measure according to the upward signal that MS sends by RS, when obtaining power control command according to measurement result, RS can measure the upward signal that MS sends, produce power control command according to measurement result, also measurement result can be issued BS, receive the power control command that BS produces according to described measurement result; If RS has the allocation of radio resources ability, then can divide voluntarily and be used in the Radio Resource that sends described power control command to MS, otherwise RS can send request to BS, initiatively is that described RS divides the Radio Resource that is used in the described power control command of transmission by BS perhaps.
For multi-hop cell mobile communication systems based on nontransparent RS, MS receives the downlink reference signal that nontransparent RS sends, described downlink reference signal is measured, obtained the open loop power output valve according to measurement result, MS sets transmitting power according to described open loop power output valve.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Measure according to the upward signal that MS sends by RS, when obtaining power control command, whether possess power control command according to RS and produce ability, allocation of radio resources ability, describe for embodiment respectively according to measurement result.
Fig. 4 is the power control flow chart of the inventive method embodiment one.
In method embodiment one, RS neither possesses power control command and produces ability, does not also possess the allocation of radio resources ability.As shown in Figure 4, the method comprising the steps of:
Step 401, MS carries out reference signal and measures according to the information such as downlink reference signal that RS sends, and carries out path loss estimation and compensation according to measurement result.
The information that RS sends to MS also comprises the transmitting power of described downlink reference signal except comprising downlink reference signal.MS carries out performance number to the downlink reference signal that receives and measures, measurement result and the downlink reference signal transmitting power that receives are compared, can estimate the path loss of the down link between RS and the MS, thereby the up link between MS and the RS is carried out path compensation.
Usually, path estimation and compensate function realize that by the open Loop Power control module of MS the open Loop Power control module is obtained the power output valve of open loop by path estimation and compensation result.MS sets the power that sends upstream data according to this open loop power output valve.
RS can periodically send downlink reference signal, also can in issuing each frame data of MS, all carry downlink reference signal, path loss is estimated and compensation and MS can all carry out the downlink reference signal that RS sends at every turn, and renewal open loop power output valve, also the downlink reference signal that can periodically send RS carries out path loss estimation and compensation, and upgrades the open loop power output valve.
The described RS of this step is nontransparent RS.Because MS measures the downlink reference signal that nontransparent RS sends in this step, rather than the downlink reference signal that BS sends measured, measurement result according to the downlink reference signal that RS is sent obtains the open loop power output valve, be used for the power control that MS issues the upstream data of RS, measured signal the path of process and MS carry out the path that the signal of power control will pass through and have correlation, therefore, can play power control effect preferably.
First when RS sends data, can set the transmitting power of the upstream data that sends first at MS by described open loop power output valve.
Described closed power adjusted value, the amplitude that can need adjust for the transmitting power of MS, the also desired value that can need adjust to for the transmitting power of MS.
Described power control command can both comprise power adjustment, comprised the direction information such as (being about to the power accent greatly still turn down) that power is adjusted again.
BS can be that described RS divides the Radio Resource that is used in this power control command of transmission when being the RS transmission power control commands, the also traffic performance of the upstream data that can receive according to BS, be the Radio Resource of described RS transmission power control commands in advance, for example, if the upstream data that BS receives is periodic business datum, then BS can be the Radio Resource that RS distributes a plurality of cycles according to this cycle.
Fig. 5 is the power control flow chart of the inventive method embodiment two.
In method embodiment two, RS possesses power control command and produces ability, but does not possess the allocation of radio resources ability.As shown in Figure 5, the method comprising the steps of:
Step 501 is with step 401.
Step 504 after BS receives the resource request of RS, according to the self radio resource scheduling scheme, is described RS distributing radio resource.
Step 505 is with step 404.
In the method shown in Figure 5, RS has postponed the transmission power control commands to MS owing to carrying out resource request, cause power control time-delay bigger, for reducing power control time-delay, the traffic performance of the upstream data that RS can send according to MS specifically sees also Fig. 6 and related description in advance to the BS request resource; Perhaps, BS initiatively distributes to the Radio Resource that RS is used for transmission power control commands in advance according to the traffic performance of upstream data, specifically sees also Fig. 7 and related description.
Fig. 6 is among the inventive method embodiment two, and to the power control flow chart of BS request resource, as shown in Figure 6, this method specifically comprises the steps: RS in advance
Step 601 is with step 501.
Step 602 has been set up under the situation of data communication with MS at RS, and RS shifts to an earlier date to the BS request resource according to the traffic performance of the upstream data that MS sends.For example, if the upstream data that MS sends is the business datum that sends in the cycle, then RS can in advance to the BS request resource, also can ask the Radio Resource in a plurality of cycles in the first resource request before following one-period arrives.
Step 603 after BS receives the resource request message that RS sends, is that described RS divides the Radio Resource that is used in transmission power control commands according to its other resources scheduling scheme.The upstream data that sends as MS is the business datum that sends in the cycle, and RS is when asking the Radio Resource in a plurality of cycles, and BS can be described RS distributing radio resource before each cycle arrives, and RS needn't be to BS transmission radio resource request before each cycle arrival.
Step 604 is with step 502.
Step 605 is with step 505.
Step 606 is with step 506.
Fig. 7 is among the inventive method embodiment two, and BS initiatively distributes to the power control flow chart that RS is used for the Radio Resource of transmission power control commands in advance, and as shown in Figure 7, this method specifically comprises the steps:
Step 701 is with step 501.
Step 702 has been set up under the situation of data communication with MS at BS, and BS divides the Radio Resource that is used in transmission power control commands for RS in advance according to the traffic performance of the upstream data that MS sends.For example, if upstream data is the business datum that sends in the cycle, then BS can be the RS distributing radio resource before each cycle arrives in advance.
Step 703 is with step 502.
Step 704 is with step 505.
Fig. 8 is the power control flow chart of the inventive method embodiment three.
In method embodiment three, RS possesses the allocation of radio resources ability, does not produce ability but do not possess power control command.As shown in Figure 8, the method comprising the steps of:
Step 801 is with step 401.
Step 802 is with step 402.
Step 803 is with step 403.
Step 805 is with step 405.
Fig. 9 is the power control flow chart of the inventive method embodiment four.
In method embodiment four, RS had both possessed the allocation of radio resources ability, possessed power control command again and produced ability.As shown in Figure 9, the method comprising the steps of:
Step 901 is with step 401.
Step 902 is with step 502.
Step 903 is with step 804.
Step 904, after MS receives the power control command of RS forwarding,, set the final transmitting power of data transmission next time according to described power control command or described power control command and open loop power output valve, go to step 902, stop communicating by letter until MS and described RS.
Usually, in the stage of MS access network, because RS can't carry out signal quality measured to the data that MS sends, perhaps, BS can't produce power control command according to the measurement result that RS sends, therefore, in the stage of MS access network, MS is according to the performance number of the power output valve setting data transmission of open loop.In case and the MS access network, the performance number that MS can send according to up-to-date open loop power output valve and power control command setting data, thus realize open loop and closed loop joint Power controlling schemes.
RS among above-mentioned four method embodiment is nontransparent RS, and the downlink reference signal among the method embodiment is sent by nontransparent RS.Above-mentioned four method embodiment are equally applicable to transparent RS, at this moment, downlink reference signal among the method embodiment is sent by BS, and calculate under the situation of power control command by the measurement result that transparent RS is put forward at BS, can directly give MS by BS, and transmit without transparent RS with this power control command transmitting.
Among the said method embodiment, signal quality measured, power control command generation and resource request, resource allocation all can adopt existing method to realize.
Figure 10 is the structure chart of system embodiment of the present invention, and as shown in figure 10, this system comprises RS and MS, wherein,
RS is used for, and receives the upward signal that MS sends, and described upward signal is measured, and obtains power control command according to measurement result, sends this power control command to described MS.
MS is used for, and sets transmitting power according to described power control command.
When RS is nontransparent RS, can be further used for, send downlink reference signal to MS.
MS is further used for, and the downlink reference signal of being sent by nontransparent RS obtains the open loop power output valve, sets transmitting power according to described open loop power output valve and described power control command.
When RS was transparent RS, MS was further used for, and the downlink reference signal of being sent by BS obtains the open loop power output valve, set transmitting power according to described open loop power output valve and described power control command.
RS can be further used for, and calculates the performance number that the MS needs are adjusted according to measurement result, produces power control command.
Described system can further comprise BS, and at this moment, described RS is further used for, and described upward signal is measured, and measurement result is issued BS, transmits the power control command that BS produces according to described measurement result to MS; Described BS is used for, and replys power control command according to the measurement result that RS sends.
Described RS also can be further used for, and divides to be used in the Radio Resource that sends described power control command, and perhaps, request BS distributes described RS to be used to send the Radio Resource of described power control command.
Described BS also can be further used for, request according to RS, be used in the Radio Resource that sends described power control command for described RS divides, perhaps, the traffic performance of the upward signal that sends according to MS is that described RS divides and is used in the Radio Resource that sends described power control command.
Figure 11 is the trunking structure chart of apparatus of the present invention embodiment one, and as shown in figure 11, this trunking comprises that power control command obtains unit 1101 and power control command transmitting send unit 1102.
Power control command obtains unit 1101 and is used for, and receives the upward signal that MS sends, and described upward signal is measured, and obtains power control command according to measurement result.
Power control command transmitting send unit 1102 to be used for, and transmission power control commands obtains the power control command in the unit 1101.Wherein, described power control command can obtain unit 1101 by transmission power control commands and issue power control command transmitting and send unit 1102, also can send unit 1102 initiatively to obtain to obtain the unit 1101 from power control command by power control command transmitting.
Figure 12 is the trunking structure chart of apparatus of the present invention embodiment two, as shown in figure 12, this trunking comprises that power control command obtains unit 1101 and power control command transmitting send unit 1102, and power control command acquisition unit 1101 comprises the first upward signal measurement module 11011 and power control command generation module 11012.
Power control command obtains that power control command acquisition unit 1101 and power control command transmitting send the annexation of unit 1102 identical among annexation that unit 1101 and power control command transmitting send unit 1102 and Figure 11 among Figure 12, repeats no more herein.
The first upward signal measurement module 11011 is used for, and reception is also measured the upward signal that MS sends, and measurement result is issued power control command generation module 11012.
Power control command generation module 11012 is used for, according to the measurement result generation power control command of upward signal measurement module 11011.
Figure 13 is the trunking structure chart of apparatus of the present invention embodiment three, as shown in figure 13, this trunking comprises that power control command obtains unit 1101 and power control command transmitting send unit 1102, and power control command acquisition unit 1101 comprises the second upward signal measurement module 11013 and power control command receiver module 11014.
Power control command obtains that power control command acquisition unit 1101 and power control command transmitting send the annexation of unit 1102 identical among annexation that unit 1101 and power control command transmitting send unit 1102 and Figure 11 among Figure 13, repeats no more herein.
The second upward signal measurement module 11013 is used for, and reception is also measured the upward signal that MS sends, and measurement result is issued BS.
Power control command receiver module 11014 is used for, and receives the power control command that BS sends according to described measurement result.
Figure 14 is the trunking structure chart of apparatus of the present invention embodiment four, as shown in figure 14, this trunking comprises that power control command obtains unit 1101 and power control command transmitting send unit 1102, and power control command transmitting send unit 1102 to comprise allocation of radio resources module 11021 and sending module 11022.
Power control command obtains that power control command acquisition unit 1101 and power control command transmitting send the annexation of unit 1102 identical among annexation that unit 1101 and power control command transmitting send unit 1102 and Figure 11 among Figure 14, repeats no more herein.
Allocation of radio resources module 11021 is used for, and divides to be used in the Radio Resource that sends described power control command, and perhaps, request BS distributes described RS to be used to send the Radio Resource of described power control command.
Sending module 11022 is used for, and the Radio Resource transmission power control commands that utilizes allocation of radio resources module 11021 to obtain obtains the power control command in the unit 1101.
The foregoing description has provided in the cell mobile communication systems of multi-hop, carry out the technical scheme of uplink power control, in the practical application, those skilled in the art can the simpler descending power that is used for control the technical scheme of present embodiment in conjunction with descending power control technology scheme of the prior art.
As seen from the above technical solution, in the technical scheme that the embodiment of the invention provided, RS measures the upward signal that MS sends, obtain power control command according to measurement result, this power control command is used for the power adjustment of MS, thereby has realized power control at multi-hop cell mobile communication systems based on RS.
According to the present invention is based on RS whether have power control command produce ability and whether with each embodiment that has wireless resource allocation to provide, when RS possesses power control command generation ability or allocation of radio resources ability, can realize distributed control, reduce the time delay that BS carries out central controlled complexity and power control.
When possessing power control command, RS produces ability, but when not possessing the allocation of radio resources ability, if shift to an earlier date to the BS request resource by RS, perhaps initiatively distribute in advance the RS Radio Resource according to the traffic performance of upstream data by BS, then can reduce the time delay of power control, reduce the Signalling exchange between RS and the BS, save Radio Resource.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1, a kind of Poewr control method is applied to comprise the multi-hop mobile communication system of mobile station MS, trunking RS and base station BS it is characterized in that the method comprising the steps of:
RS receives the upward signal that MS sends, and described upward signal is measured, and obtains power control command according to measurement result, sends this power control command to described MS;
MS sets transmitting power according to described power control command.
2, the method for claim 1 is characterized in that, described RS is nontransparent RS, and MS sets transmitting power according to described power control command and comprises:
MS receives the downlink reference signal that nontransparent RS sends, and obtains the open loop power output valve by described downlink reference signal;
MS sets transmitting power according to described open loop power output valve and described power control command.
3, the method for claim 1 is characterized in that, described RS is transparent RS, and MS sets transmitting power according to described power control command and comprises:
MS receives the downlink reference signal that BS sends, and obtains the open loop power output valve by described downlink reference signal;
MS sets transmitting power according to described open loop power output valve and described power control command.
4, the method for claim 1 is characterized in that, obtains power control command according to measurement result and comprises:
RS calculates the performance number that the MS needs are adjusted according to measurement result, produces power control command;
Perhaps, RS issues BS with measurement result, transmits the power control command that BS produces according to described measurement result to MS.
As claim 1 or 4 described methods, it is characterized in that 5, RS further comprised before described MS transmission power control commands:
RS divides the Radio Resource that is used in the described power control command of transmission;
Perhaps, BS is that RS divides the Radio Resource that is used in the described power control command of transmission.
6, method as claimed in claim 5 is characterized in that, BS is that RS divides the Radio Resource that is used in the described power control command of transmission to comprise:
BS is used in the Radio Resource that sends described power control command according to the request of RS for described RS divides;
Perhaps, BS is that RS divides the Radio Resource that is used in the described power control command of transmission according to the traffic performance of the upward signal of MS transmission.
7, a kind of Poewr control method is applied to comprise the multi-hop mobile communication system of MS, nontransparent RS and BS it is characterized in that the method comprising the steps of:
MS receives the downlink reference signal that nontransparent RS sends, and described downlink reference signal is measured, and obtains the open loop power output valve according to measurement result;
MS sets transmitting power according to described open loop power output valve.
8, a kind of power control system is characterized in that, this system comprises RS and MS,
Described RS is used for, and receives the upward signal that MS sends, and described upward signal is measured, and obtains power control command according to measurement result, sends this power control command to described MS;
Described MS is used for, and sets transmitting power according to described power control command.
9, system as claimed in claim 8 is characterized in that, described RS is nontransparent RS,
Described nontransparent RS is further used for, and sends downlink reference signal to MS;
Described MS is further used for, and the downlink reference signal of being sent by nontransparent RS obtains the open loop power output valve, sets transmitting power according to described open loop power output valve and described power control command.
10, system as claimed in claim 8 is characterized in that, described RS is transparent RS,
Described MS is further used for, and the downlink reference signal of being sent by BS obtains the open loop power output valve, sets transmitting power according to described open loop power output valve and described power control command.
11, system as claimed in claim 8 is characterized in that,
Described RS is further used for, and calculates the performance number that the MS needs are adjusted according to measurement result, produces power control command,
Perhaps, described system further comprises BS,
Described RS is further used for, and measurement result is issued BS, transmits the power control command that BS produces according to described measurement result to MS,
Described BS is used for, and replys power control command according to the measurement result that RS sends.
12, system as claimed in claim 11 is characterized in that,
Described RS is further used for, and divides to be used in the Radio Resource that sends described power control command, and perhaps, request BS distributes described RS to be used to send the Radio Resource of described power control command;
Described BS is further used for, request according to RS, be used in the Radio Resource that sends described power control command for described RS divides, perhaps, the traffic performance of the upward signal that sends according to MS is that described RS divides and is used in the Radio Resource that sends described power control command.
13, a kind of trunking RS is characterized in that, described RS comprises that power control command obtains the unit and power control command transmitting send the unit;
Described power control command obtains the unit and is used for, and receives the upward signal that MS sends, and described upward signal is measured, and obtains power control command according to measurement result;
Described power control command transmitting send the unit to be used for, and transmission power control commands obtains the power control command in the unit.
14, trunking as claimed in claim 13 is characterized in that, described power control command obtains the unit and comprises the first upward signal measurement module and power control command generation module;
The described first upward signal measurement module is used for, and reception is also measured the upward signal that MS sends, and measurement result is issued the power control command generation module;
Described power control command generation module is used for, according to the measurement result generation power control command of upward signal measurement module.
15, trunking as claimed in claim 13 is characterized in that, described power control command obtains the unit and comprises the second upward signal measurement module and power control command receiver module;
The described second upward signal measurement module is used for, and reception is also measured the upward signal that MS sends, and measurement result is issued BS;
Described power control command receiver module is used for, and receives the power control command that BS sends according to described measurement result.
16, trunking as claimed in claim 13 is characterized in that, described power control command transmitting send the unit to comprise allocation of radio resources module and sending module;
Described allocation of radio resources module is used for, and divides to be used in the Radio Resource that sends described power control command, and perhaps, request BS distributes described RS to be used to send the Radio Resource of described power control command;
Described sending module is used for, and the Radio Resource that utilizes the allocation of radio resources module to obtain sends described power control command.
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| CN200810101319A CN101527587A (en) | 2008-03-04 | 2008-03-04 | Method, system and relay equipment for power control |
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| CN200810101319A CN101527587A (en) | 2008-03-04 | 2008-03-04 | Method, system and relay equipment for power control |
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| WO2013013515A1 (en) * | 2011-07-25 | 2013-01-31 | 上海无线通信研究中心 | Method for controlling uplink interference in hybrid network |
| CN103067966A (en) * | 2011-10-20 | 2013-04-24 | 上海无线通信研究中心 | Upstream interference source identification method in hybrid network |
| CN103369646A (en) * | 2012-04-01 | 2013-10-23 | 上海交通大学 | Power distribution method, system and device |
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| WO2019153223A1 (en) * | 2018-02-09 | 2019-08-15 | 海能达通信股份有限公司 | Wireless mesh network power adjustment method, apparatus and device |
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| WO2019153223A1 (en) * | 2018-02-09 | 2019-08-15 | 海能达通信股份有限公司 | Wireless mesh network power adjustment method, apparatus and device |
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