CN101527586B - Method, system and mobile terminal for path loss compensation - Google Patents
Method, system and mobile terminal for path loss compensation Download PDFInfo
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Abstract
The embodiment of the invention discloses a method for path loss compensation for a multi-hop mobile communication system consisting of a mobile station MS, transparent relay station RS, and a base station BS, which comprises the following steps that: the mobile station MS or the transparent RS measures a reference signal sent by the other one of the mobile station MS and the transparent RS, and estimates a pass loss value according to the transmission power of the reference signal; and after acquiring the path loss value, the MS carries out uplink path loss compensation. The embodiment of the invention also discloses a system for path loss compensation and a mobile terminal supporting the method for path loss compensation. The technical proposal disclosed in the embodiment of the invention can reduce power control errors caused by path compensation errors.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of path loss compensation method, system and portable terminal.
Background technology
In the mobile communication system in future, will introduce the coverage that via node (Relay Station, RS) enlarges network, improve the throughput of system, form the mobile communication system of multi-hop.
RS refers to, possesses the node of forwarding data and control signal function between node (such as base station BS, RS, mobile station MS), has flexible arrangement, characteristics that cost is low, can save the networking cost, improves transmission rate.In the multi-hop mobile communication system based on RS, MS and BS are by the RS indirect communication, that is, the wireless channel between MS and the BS comprises access link and repeated link.Access link wherein refers to, starts from or end in the wireless channel of MS; Repeated link refers to, the wireless channel between the wireless channel between BS and the RS or RS and the RS.
In the multi-hop mobile communication system based on RS, the 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.
Transparent RS is mainly used in improving the throughput of system, and it does not send the broadcasts such as descending synchronous signal channel, system configuration and resource distribution 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 distribution 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.
Fig. 1 is the application scenarios schematic diagram of RS, and as shown in Figure 1, the RS that wherein is used for providing focus to cover is transparent RS, and the RS of solution shadow effect and the RS that expands the coverage area are nontransparent RS.
Only forwarding data and control information between MS and BS of existing transparent RS, and do not send the broadcast that carries downlink reference signal to MS, in the multi-hop mobile communication system based on transparent RS, broadcast sends by BS.
In mobile communication system, there is path loss in the transmission of signal in wireless channel, so that there is decline in described signal in the transmission course from the transmitter terminal to the receiver end, this decline is in the mobile communication system, one of power control techniques scheme problem to be solved.Usually, the path loss of different radio channel is different.
Power control is a measure of taking in order to overcome " near-far interference ", it is on the basis that the indexs such as the received signal strength 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 to other users in the same wireless channel again.
Power control techniques comprises uplink power control and downlink power control, and existing downlink power control technology comprises open Loop Power control technical scheme, close-loop power control technical scheme and open loop closed loop joint Power control technology scheme.
In the open Loop Power control technical scheme, MS measures downlink reference signal, and in conjunction with the transmitting power of described downlink reference signal, estimate the downlink path loss value, correlation according to up path and downlink path, carry out the up path loss balancing by described downlink path loss value, adjust transmitting power.The dynamic range of open Loop Power control is larger.
Fig. 2 is path loss compensation schematic diagram of the prior art, and as shown in Figure 2, existing path loss compensation is realized by following steps:
1., MS carries out signal quality measured to the downlink reference signal that BS sends.
2., MS in conjunction with BS send the performance number of described downlink reference signal and 1. in signal quality measurement result, carry out path loss and estimate, obtain path loss values.
3., the path loss compensating parameter sent according to BS of MS and 2. in path loss values, carry out the path loss compensation.
Reference signal is measured, carried out path loss by measurement result and estimate to obtain path loss values, and these all are those skilled in the art's known technologies.
In the close-loop power control technical scheme, BS measures the upward signal that MS sends, the rated output adjusted value, obtain power control command, send described power control command to MS, MS adjusts transmitting power according to this power control command, thereby can be to MS owing to the variations that rapid fading produces compensates.The dynamic range of close-loop power control is less.
In the open loop closed loop joint Power control technology scheme, the power control command that the transmitting power that MS obtains according to open Loop Power control and close-loop power control obtain arranges transmitting power.
As seen, when in the multi-hop mobile communication system based on transparent RS, carrying out uplink power control, then carry out the required path loss values of power control and obtained according to the downlink reference signal that BS sends by MS, and be used for the up path compensation of MS to RS, to obtain the upward signal transmitting power of MS to RS.Because the downlink wireless channel of BS to MS and the uplink wireless channel of MS to RS do not have correlation, therefore, the downlink reference signal that MS is sent according to BS carries out the path loss values that the estimation of path loss consumption obtains, and the up path compensation that is used for MS to RS will cause the error of power control larger.
Summary of the invention
In view of this, the purpose of the embodiment of the invention is to provide a kind of path loss compensation method, system and portable terminal, to reduce the power departure that causes owing to the path compensation error.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of path loss compensation method, the method are applied to comprise that the method comprising the steps of in the multi-hop mobile communication system of mobile station MS, transparent relay equipment RS and base station BS:
MS or transparent RS measure the reference signal that the opposing party in the said two devices sends, and in conjunction with the transmitting power estimating path loss value of described reference signal;
After MS is known described path loss values, carry out the up path loss balancing according to described path loss values.
A kind of path loss bucking-out system, this system comprise MS and transparent RS;
Described MS is used for, the reference signal that transparent RS sends is measured, and in conjunction with the transmitting power estimating path loss value of described reference signal, carry out the up path compensation by described path loss values, or, receive the path loss values that transparent RS sends, carry out the up path loss balancing by described path loss values;
Described transparent RS is used for, and sends reference signal to described MS, or, the reference signal from described MS is measured, and in conjunction with the transmitting power estimating path loss value of described reference signal, sent described path loss values to described MS.
A kind of MS, this terminal comprises up path loss balancing module,
Described up path loss balancing module is used for, the reference signal that transparent RS sends is measured, and in conjunction with the transmitting power estimating path loss value of described reference signal, carry out the up path compensation by described path loss values, or, receive the path loss values that transparent RS sends, carry out the up path loss balancing by described path loss values.
As seen from the above technical solution, in the technical scheme that the embodiment of the invention provides, MS measures the reference signal between transparent RS and the described MS, and obtain path loss values by the transmitting power of measurement result and described reference signal, carry out the up path compensation, have correlation owing to obtaining the wireless channel of path loss values with the wireless channel that carries out path compensation, therefore can reduce the error of path compensation, and then reduce the power departure that causes owing to the path compensation error.
Description of drawings
Fig. 1 is the application scenarios schematic diagram of RS;
Fig. 2 is path loss compensation schematic diagram of the prior art;
Fig. 3 is the first pass figure of embodiment of the method one;
Fig. 4 is the second flow chart of embodiment of the method one;
Fig. 5 is the first pass figure of embodiment of the method two;
Fig. 6 is the second flow chart of embodiment of the method two;
Fig. 7 is the flow chart that MS carries out the path compensation model selection;
Fig. 8 is the structure chart of system embodiment of the present invention;
Fig. 9 is the structure chart of the mobile terminal MS that provides of apparatus of the present invention embodiment one;
Figure 10 is among the MS that provides of apparatus of the present invention embodiment one, the first structure chart of up path loss balancing module 901;
Among the MS that Figure 11 provides for apparatus of the present invention embodiment one, the second structure chart of up path loss balancing module 901.
Embodiment
Embodiment provided by the present invention, MS measures the reference signal between transparent RS and the described MS, and obtains path loss values by the transmitting power of measurement result and described reference signal, carries out the up path compensation.
For making purpose of the present invention, technical scheme and advantage clearer, referring to accompanying drawing, send both of these case by transparent RS transmission and described reference signal by MS according to described reference signal respectively, in power control, be applied as example with path compensation, lift respectively related embodiment, the present invention is described in more detail (hereinafter described RS is transparent RS).
Embodiment of the method one,
RS sends downlink reference signal according to the indication of BS to described MS, and MS measures the downlink reference signal from RS, and the transmitted power calculating path loss value in conjunction with described downlink reference signal carries out the up path loss balancing.
Fig. 3 is the first pass figure of embodiment of the method one, and in this flow process, RS sends downlink reference signal under the control of BS.As shown in Figure 3, the method is specifically realized by following steps:
Step 301, BS sends downlink reference signal to RS and sends indication; BS sends and receives the information of the downlink reference signal (being designated as the RS downlink reference signal) of RS transmission, for example transmission power level of RS downlink reference signal, frame characteristics and/or transmission time information to MS; BS sends the information such as transmitting power of downlink reference signal and described reference signal to MS, be designated as the BS downlink reference signal, and wherein, BS sends downlink reference signal by the chain road direction MS that direct transfers between BS in the prior art and the MS.
Common described downlink reference signal sends transmission power level and frame characteristics and/or the transmission time information of the RS downlink reference signal that comprises the RS transmission in the indication.
In this step, BS can be not directly send the transmission power level of RS downlink reference signal yet to MS, but after BS issues RS with the transmission power level of RS downlink reference signal, by RS described transmission power level is issued MS.
Step 302, RS sends indication according to the downlink reference signal that BS sends, and sends downlink reference signal to MS.For example, if carry transmitting power, frame characteristics and the transmission time information of RS downlink reference signal in the described transmission indication, then RS organizes the RS downlink reference signal according to described frame characteristics, sends downlink reference signal (being designated as the RS downlink reference signal) with described transmitting power to MS on described transmitting time.
Step 303, MS measures the RS downlink reference signal that RS sends, and according to measurement result, and obtains path loss estimated value PL1 from the RS downlink reference signal transmission power level of BS, carries out the up path loss balancing by this PL1.
Transmission power level according to reference signal measurement result and reference signal obtains the path loss estimated value, carries out the up path loss balancing by the path loss estimated value, and these all are those skilled in the art's known technologies, repeat no more herein.
If BS in the broadcast that MS sends except carrying downlink reference signal, also carry the path loss compensating parameter, then MS is on the basis of described measurement result, described RS downlink reference signal transmission power level, further combined with described path loss compensating parameter, obtain path loss estimated value PL1.
MS can according to a preconcerted arrangement RS downlink reference signal feature (such as frame characteristics) and BS downlink reference signal feature identify the RS downlink reference signal, also can identify described RS downlink reference signal according to the RS downlink reference signal feature that BS sends.
Step 304, MS based on certain algorithm setting data transmitting power, sends data to RS on the basis of measuring the PL1 value.
By step 301 to step 304, MS measures the downlink reference signal that RS sends, can obtain downlink path loss value between the RS to MS by the transmitting power of measurement result and described downlink reference signal, according to the correlation between the up-downgoing path, up path to MS to RS carries out path compensation, obtain the wireless channel of described path loss values and carry out the wireless channel of path compensation for having correlation, therefore can reduce the error of path compensation, and then reduce the error that MS carries out power control.
If RS intermittently sends the RS downlink reference signal to MS, then be not to obtain newer PL1 before MS sends upstream data each time, if obtaining the moment of PL1 is separated by longer with the moment that sends data, then continue to carry out the up path compensation with PL1, and then carry out power and control, the error of power control can be larger, can by after step 303, go to step 305 and solve this problem.
Step 305, MS measures the BS downlink reference signal, and according to measurement result, and BS downlink reference signal transmission power level obtains path loss estimated value PL2, obtains path compensation factor Δ PL by PL1 and PL2.Usually, MS receives for the BS downlink reference signal that calculates PL2 and to be used for calculating moment of RS downlink reference signal of PL1 more approaching, and the Δ PL that obtains more optimizes.
Δ PL can have multiple computational methods, can embody with the Δ PL that obtains, the variation of relation between PL2 and the PL1 (this relation can be obtained by methods such as l-G simulation test, data statisticss), PL2 is as the criterion on the impact of PL1, Δ PL=PL2-PL1 for example, at this moment, Δ PL is path loss compensation difference, perhaps Δ PL=PL2/PL1, Δ PL=PL2/ (PL1
α) (α is real number).
Step 306 on the basis of measuring PL2 and Δ PL, based on certain algorithm setting data transmitting power, sends data to RS.
By continuing execution in step 305 and 306, if MS sends the moment of data and is separated by longer with the moment that obtains up-to-date PL1 value, then MS can carry out path compensation according to Δ PL and the up-to-date PL2 that obtains, and with the error of reduction path compensation, and then reduces the power departure.This is because PL2 value is based on the measuring of BS downlink reference signal, and the transmission interval of BS downlink reference signal is shorter, and in the difference moment, the variation of Δ PL is little.
Fig. 4 is the second flow chart of embodiment of the method one, and in this flow process, RS sends downlink reference signal to MS under the control of BS, and determines the transmitting power of described downlink reference signal, sends described transmitting power to described MS.As shown in Figure 4, the method is specifically realized by following steps:
Step 401, BS sends the broadcast of the information such as transmitting power that carry downlink reference signal, downlink reference signal to MS, described downlink reference signal is designated as the BS downlink reference signal, BS also sends downstream signal to RS and sends indication, send the feature of the downlink reference signal of RS transmission to described MS, such as frame characteristics, transmission time information etc.
Step 402, RS after the downstream signal that receives the BS transmission sends and indicates, determines the transmitting power of downlink reference signal (being designated as the RS downlink reference signal) voluntarily, sends RS downlink reference signal and transmission power level thereof to MS.At this moment, be provided with the module that sends downlink reference signal to MS among the RS.
Step 403～406 are with step 303～306.
Embodiment of the method two,
Transparent RS measures the uplink reference signals that MS sends, and in conjunction with the transmitted power calculating path loss value of described uplink reference signals, described path loss values is notified to described MS, is used for MS and carries out the up path loss balancing.
Fig. 5 is the first pass figure of embodiment of the method two, and in this flow process, RS directly issues MS with the path loss values that obtains.As shown in Figure 5, the method is specifically realized by following steps:
Step 501, MS sends uplink reference signals to RS.Usually, this uplink reference signals is the Sounding signal, and MS also sends the transmission power level of described uplink reference signals to described RS.
Step 502, RS measures the uplink reference signals that MS sends, by measurement result, and the transmission power level estimating path loss of described uplink reference signals, obtain path loss values PL3.
Step 503, RS issues MS with PL3.At this moment, usually require RS to have the allocation of radio resources ability, can divide to be used in the Radio Resource that sends PL3 to MS, if RS does not have the allocation of radio resources ability, then need RS to the BS requesting radio resource, or initiatively be described RS distributing radio resource by BS.
Step 504～506 only are with the difference of step 304～306: PL1 is replaced with PL3.
Fig. 6 is the second flow chart of embodiment of the method two, and in this flow process, RS issues BS with the path loss values that obtains, and then by BS described path loss values is issued MS.As shown in Figure 5, the method is specifically realized by following steps:
Step 601～602 are with step 501～502.
Step 603, RS reports to BS with PL3, and BS issues MS with circuit loss value PL3.
Step 604～606 are with step 504～506.
Step 602～603 also can adopt following manner: RS that the uplink reference signals that MS sends is measured, and measurement result is reported BS, obtain PL3 by BS according to the transmitting power of described measurement result and described uplink reference signals, again PL3 are issued MS.
The path loss values that is used for embodiment of the method two is based on measuring of uplink reference signals, therefore its effect generally is better than embodiment of the method one, if MS had both obtained PL1 or Δ PL in the embodiment of the method two, PL1 or Δ PL in the embodiment of the method one have been obtained again, then PL1 or the Δ PL among the common method for optimizing embodiment two.
In embodiment of the method one and embodiment of the method two, if MS need to select one of them to be used for the up path compensation between PL1 and Δ PL, then can realize by the term of validity that PL1 is set, specifically see also Fig. 7 related description.
Fig. 7 is the flow chart that MS carries out the path compensation model selection, and as shown in Figure 7, the selection of described path compensation pattern can be realized by following step:
Step 701 after MS obtains PL1, is upgraded the PL1 that has stored among the MS by this PL1, and the PL1 term of validity and timing are set.If the PL1 that has not stored among the MS then will by the PL1 memory module among this PL1 initialization MS, arrange the PL1 term of validity and timing.
Step 703 selects Δ PL to be used for the up path compensation.
Step 704 selects PL1 to be used for the up path compensation.
The path compensation method that above-described embodiment provides, to carry out the background that is applied as in the uplink power control with described method at MS, those skilled in the art can be clear and definite, described power control is not to limit for the path compensation method that embodiment is provided, this path compensation method also can be used in the mobile communication system, and other need the occasion of path compensation.
In conjunction with said method embodiment, system embodiment and the portable terminal embodiment of the path compensation method that can supported said method embodiment provides.
Fig. 8 is the structure chart of system embodiment of the present invention, and as shown in Figure 8, this system comprises MS and BS.
Described MS is used for, measure according to the reference signal that RS is sent, and the path loss values of estimating in conjunction with the transmitting power of described reference signal, or, RS measures the reference signal from described MS, and in conjunction with the path loss values that the transmitting power of described reference signal is estimated, carry out the up path loss balancing;
Described RS is used for, and sends reference signal to described MS, or, the reference signal from described MS is measured, and in conjunction with the transmitting power estimating path loss value of described reference signal, described path loss values is notified to described MS.
Described system also can further comprise BS.
Described BS is used for, and sends the transmission power value of reference signal and described reference signal to described MS.
Described MS also can be further used for, the reference signal that BS sends is measured, and in conjunction with described transmission power value estimation reference path loss value, obtain the path loss compensating factor by described path loss values and described reference path loss value, carry out the up path loss balancing by reference path loss value and described path loss compensating factor.
Described RS also can be further used for, and will measure the reference signal from MS, and estimate that in conjunction with the transmitting power of described reference signal the path loss values that obtains issues described MS, or issue BS, by BS described path loss values is issued described MS.
Described BS also can be used for, and sends the reference signal that carries reference signal frame characteristics and/or transmission time information to described RS and sends indication, sends described frame characteristics and/or transmission time information to MS.
Described RS also can be further used for, and sends indication according to described reference signal and sends reference signal to described MS.
Described MS also can be further used for, according to the reference signal of described frame characteristics and/or transmission time information identification from described RS.
Fig. 9 is the structure chart of the mobile terminal MS that provides of apparatus of the present invention embodiment one, and as shown in Figure 9, this MS comprises up path loss balancing module 901.
Up path loss balancing module 901 is used for, measure according to the reference signal that RS is sent, and the path loss values of estimating in conjunction with the transmitting power of described reference signal, or, RS measures the reference signal from described MS, and in conjunction with the path loss values that the transmitting power of described reference signal is estimated, carry out the up path loss balancing.
Figure 10 is among the MS that provides of apparatus of the present invention embodiment one, the first structure chart of up path loss balancing module 901, as shown in figure 10, up path loss balancing module 901 comprises that path loss values obtains module 9011, the reference path loss value obtains module 9012, path loss compensating factor acquisition module 9013 and the first path compensating module 9014.
Path loss values obtains module 9011 and is used for, the reference signal that RS sends is measured, and in conjunction with the transmitting power estimating path loss value of described reference signal, or, receive described RS the reference signal from described portable terminal is measured, and estimate the path loss values that obtains in conjunction with the transmitting power of described reference signal.
The reference path loss value obtains module 9012 and is used for, and the reference signal that BS sends is measured, and sent the transmitting power estimation reference path loss value of described reference signal in conjunction with BS.
The path loss compensating factor obtains module 9013 and is used for, and obtains the path loss compensating factor by described path loss values and described reference path loss value.
The first path compensating module 9014 is used for, and carries out the up path loss balancing by reference path loss value and path loss compensating factor.
Figure 11 is among the MS that provides of apparatus of the present invention embodiment one, the second structure chart of up path loss balancing module 901, as shown in figure 11, up path loss balancing module 901 is except comprising that path loss values obtains module 9011, the reference path loss value obtains also to comprise term of validity setting module 9015, path compensation mode selection module 9016 and the second path compensation module 9017 module 9012, path loss compensating factor acquisition module 9013 and the first path compensating module 9014.
Term of validity setting module 9015 is used for, after receiving the renewal indication of path loss values acquisition module 9012, the set path loss value obtains the term of validity and the timing of the path loss values in the module 9012, send effectively indication to path compensation mode selection module 9016, after surpassing the described term of validity, send expired indication to path compensation mode selection module 9016.
Path compensation mode selection module 9016 is used for, receive described effective indication after, send selected indication to the second path compensation module 9017, receive described expired indication after, send selected indication to the first path compensating module 9014.
The second path compensation module 9017 is used for, receive the selected indication that path compensation mode selection module 9016 sends after, carry out the up path compensation by path loss values.
The first path compensating module 9014 is used for, receive the selected indication that path compensation mode selection module 9016 sends after, carry out the up path loss balancing by reference path loss value and path loss compensating factor.
Path loss values obtains module 9011 and is further used for, and behind the way to acquire loss value, sends the renewal indication to term of validity setting module 9015.
As seen from the above technical solution, in the technical scheme that the embodiment of the invention provides, MS measures the reference signal between RS and the described MS, and obtains path loss values by the transmitting power of measurement result and described reference signal, carries out the up path compensation.Guaranteed that the wireless channel that obtains described path loss values has correlation with the wireless channel that carries out the up path compensation, and then reduced the path loss values error that is used for the up path compensation, and then reduced the path compensation error, reached and reduced the power departure this purpose that causes owing to the path compensation error.
When MS further calculates Δ PL, and between Δ PL and PL1, select one to be used for the up path compensation, also can further reduce the path compensation error, and then reach and reduce the power departure this purpose that causes owing to the path compensation error.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention, all any modifications of making 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 (3)
1. path loss compensation method, the method be applied to comprise in the multi-hop mobile communication system of mobile station MS, transparent relay equipment RS and base station BS, and it is characterized in that, the method comprising the steps of:
MS or transparent RS measure the reference signal that the opposing party in the said two devices sends, and in conjunction with the transmitting power estimating path loss value of described reference signal;
After MS is known described path loss values, carry out the up path loss balancing according to described path loss values;
Send reference signal by MS, and, after the transparent RS estimating path loss value, further comprise step:
Transparent RS issues MS with described path loss values,
Or transparent RS issues BS with described path loss values, and BS issues MS with described path loss values;
Send reference signal by transparent RS, comprising:
The reference signal that transparent RS sends according to BS sends indication and sends reference signal to MS, or the transmitting power of described reference signal and described reference signal;
MS measures the reference signal that transparent RS sends, and further comprises before the transmitting power estimating path loss value in conjunction with described reference signal:
The transmission time information of the reference signal of coming self-induced transparency RS that MS informs according to BS, or the frame characteristics of described transmission time information and described reference signal, identification comes the reference signal of self-induced transparency RS, the described reference signal transmitting power from the BS indication that receives self-induced transparency RS or transmit by transparent RS;
Carrying out the up path loss balancing according to described path loss values comprises: the term of validity that path loss values is set;
If described path loss values is updated before the deadline, then MS carries out the up path loss balancing by the path loss values after upgrading, otherwise in the term of validity of described path loss values, MS carries out the up path loss balancing by described path loss values;
If crossing after date, described path loss values do not upgrade yet, then MS measures the reference signal of sending from BS by transparent RS transmission, and estimate the reference path loss value in conjunction with the transmitting power that BS sends described reference signal, obtain the path loss compensating factor by described path loss values and reference path loss value, carry out the up path loss balancing by reference path loss value and described path loss compensating factor.
2. a path loss bucking-out system is characterized in that, this system comprises mobile station MS and transparent relay equipment RS;
Described MS is used for, the reference signal that transparent RS sends is measured, and in conjunction with the transmitting power estimating path loss value of described reference signal, carry out the up path compensation by described path loss values, or, receive the path loss values that transparent RS sends, carry out the up path loss balancing by described path loss values;
Described transparent RS is used for, and sends reference signal to described MS, or, the reference signal from described MS is measured, and in conjunction with the transmitting power estimating path loss value of described reference signal, sent described path loss values to described MS; Described system further comprises BS;
Described base station BS is used for, and sends the transmission power value of reference signal and described reference signal to described MS;
Described MS is further used for, the reference signal that BS sends is measured, and in conjunction with described transmission power value estimation reference path loss value, obtain the path loss compensating factor by described path loss values and described reference path loss value, carry out the up path loss balancing by reference path loss value and described path loss compensating factor;
Described transparent RS is further used for, and will measure the reference signal from MS, and estimate that in conjunction with the transmitting power of described reference signal the path loss values that obtains issues described MS, or by BS described path loss values be issued described MS;
Described system further comprises BS,
Described BS is used for, and sends the reference signal that carries reference signal frame characteristics and/or transmission time information to described transparent RS and sends indication, sends described frame characteristics and/or transmission time information to MS;
Described transparent RS is further used for, and sends indication according to described reference signal and sends reference signal to described MS;
Described MS is further used for, according to the reference signal of described frame characteristics and/or transmission time information identification from described transparent RS.
3. a mobile station MS is characterized in that, this terminal comprises up path loss balancing module,
Described up path loss balancing module comprises that path loss values obtains module, the reference path loss value obtains module, path loss compensating factor acquisition module and the first path compensating module;
Described path loss values obtains module and is used for, the reference signal that described transparent relay equipment RS sends measured, and in conjunction with the transmitting power estimating path loss value of described reference signal, or, receive the path loss values that described transparent RS sends;
Described reference path loss value obtains module and is used for, and the reference signal that base station BS is sent is measured, and sent the transmitting power estimation reference path loss value of described reference signal in conjunction with BS;
Described path loss compensating factor obtains module and is used for, and obtains the path loss compensating factor by described path loss values and described reference path loss value;
Described the first path compensating module is used for, and carries out the up path loss balancing by reference path loss value and path loss compensating factor; This terminal further comprises term of validity setting module, path compensation mode selection module and the second path compensation module;
Described term of validity setting module is used for, after receiving the renewal indication of described path loss values acquisition module, set the term of validity and timing that described path loss values obtains the path loss values in the module, send effectively indication to described path compensation mode selection module, after surpassing the described term of validity, send expired indication to described path compensation mode selection module;
Described path compensation mode selection module is used for, receive described effective indication after, send selected indication to described the second path compensation module, receive described expired indication after, send selected indication to described the first path compensating module;
Described the second path compensation module is used for, receive the selected indication that described path compensation mode selection module sends after, carry out the up path compensation by path loss values;
Described the first path compensating module is used for, receive the selected indication that described path compensation mode selection module sends after, carry out the up path loss balancing by reference path loss value and path loss compensating factor;
Described path loss values obtains module and is further used for, and behind the way to acquire loss value, sends the renewal indication to described term of validity setting module.
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Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102474824B (en) * | 2009-09-30 | 2013-12-25 | 上海贝尔股份有限公司 | Method and device for uplink power control in communication system based on carrier aggregation |
| CN102652444A (en) * | 2010-02-11 | 2012-08-29 | 上海贝尔股份有限公司 | Communication method and related device in relay wireless communication system |
| US9426814B2 (en) * | 2011-03-11 | 2016-08-23 | Telefonaktiebolaget L M Ericsson (Publ) | Radio base station and a method therein for scheduling radio resources based on a path loss fraction |
| CN102395184B (en) * | 2011-06-30 | 2015-08-26 | 电信科学技术研究院 | A kind of method and device implementing uplink power control |
| JP5814041B2 (en) * | 2011-08-12 | 2015-11-17 | 株式会社Ｎｔｔドコモ | Radio communication system, radio base station apparatus, user terminal, and radio communication method |
| CN106455030B (en) * | 2011-10-28 | 2020-03-31 | 华为技术有限公司 | Method for controlling uplink power, user equipment and access point |
| CN103179652A (en) * | 2011-12-23 | 2013-06-26 | 中兴通讯股份有限公司 | Method and device for matching uplink coverage with downlink coverage in network optimization |
| CN103345205B (en) * | 2013-05-21 | 2015-07-15 | 国家电网公司 | Data verification-based AGC load optimizing controlling method |
| CN110383906B (en) * | 2017-04-13 | 2020-05-26 | 上海朗帛通信技术有限公司 | A kind of user equipment used for wireless communication, method and apparatus in base station |
| CN109104698B (en) * | 2017-06-21 | 2021-09-07 | 翌勤通讯股份有限公司 | Distributed communication method and system |
| CN108076509B (en) * | 2018-02-09 | 2021-03-19 | 海能达通信股份有限公司 | Wireless MESH network power adjustment method, device and equipment |
| CN111263380B (en) * | 2018-11-30 | 2023-04-25 | 中国移动通信集团浙江有限公司 | Abnormal repeater identification method and device |
| KR20210066691A (en) * | 2019-11-28 | 2021-06-07 | 삼성전자주식회사 | An wireless communication apparatus that controls a transmission power of sounding reference signal for channel reciprocity and an wireless communication system including the same |
| EP3829076A3 (en) | 2019-11-28 | 2021-08-04 | Samsung Electronics Co., Ltd. | Transmission power control of sounding reference signals in wireless communication system and device |
| CN115113543B (en) * | 2021-03-18 | 2025-07-04 | 北京致远航程软件科技有限公司 | Device control method, device, storage medium and electronic device |
| CN114245447B (en) * | 2021-12-23 | 2024-11-22 | 中国信息通信研究院 | A wireless communication system power configuration method and device |
| CN118476278A (en) * | 2022-05-16 | 2024-08-09 | 联发科技股份有限公司 | Power control for repeater and multipath communications |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1658532A (en) * | 2004-02-19 | 2005-08-24 | 株式会社Ntt都科摩 | Wireless relay system, wireless relay device and wireless relay method |
| WO2007064249A1 (en) * | 2005-11-29 | 2007-06-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Scheduling in a wireless multi-hop relay network |
| WO2007068999A1 (en) * | 2005-12-16 | 2007-06-21 | Nokia Corporation | A relay |
| CN101072065A (en) * | 2006-01-03 | 2007-11-14 | 三星电子株式会社 | Apparatus and method for transparent relaying in multi-hop relay cellular network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7620367B2 (en) * | 2005-10-31 | 2009-11-17 | Ipwireless, Inc. | Frequency domain unscheduled transmission in a TDD wireless communications system |
-
2008
- 2008-03-04 CN CN2008101013183A patent/CN101527586B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1658532A (en) * | 2004-02-19 | 2005-08-24 | 株式会社Ntt都科摩 | Wireless relay system, wireless relay device and wireless relay method |
| WO2007064249A1 (en) * | 2005-11-29 | 2007-06-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Scheduling in a wireless multi-hop relay network |
| WO2007068999A1 (en) * | 2005-12-16 | 2007-06-21 | Nokia Corporation | A relay |
| CN101072065A (en) * | 2006-01-03 | 2007-11-14 | 三星电子株式会社 | Apparatus and method for transparent relaying in multi-hop relay cellular network |
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