CN101527586A - 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, (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, possesses the node of transmitting data and control signaling capability between node (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 is meant, starts from or end in the wireless channel of MS; Repeated link is meant, the wireless channel between wireless channel 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.
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.
Fig. 1 is the application scenarios schematic diagram of RS, and as shown in Figure 1, the RS that wherein is used to provide focus to cover is transparent RS, and the RS of solution shadow effect and the RS that expands the coverage area are nontransparent RS.
Existing transparent RS only transmits data and control information between MS and BS, and does not send the broadcast that carries downlink reference signal to MS, and 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, make described signal have decline 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 difference of different radio channel.
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.
Power control techniques comprises uplink power control and descending power control, and existing descending power control technology comprises open Loop Power control technical scheme, closed power control technology 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 bigger.
Fig. 2 is a 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 closed power control technology 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 closed power control is less.
In the open loop closed loop joint Power control technology scheme, the power control command that transmitting power that MS obtains according to open Loop Power control and closed power control obtain is provided with transmitting power.
As seen, when in multi-hop mobile communication system, carrying out uplink power control based on transparent RS, then carry out the required path loss values of power control and obtain according to the downlink reference signal that BS sends, and be used for the up path compensation of MS to RS, to obtain the upward signal transmitting power of MS to RS by MS.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 bigger.
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, this 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, sent described path loss values to described MS in conjunction with the transmitting power estimating path loss value of described reference signal.
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 provided, 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 obtain 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 a path loss compensation schematic diagram of the prior art;
Fig. 3 is the first pass figure of method embodiment one;
Fig. 4 is second flow chart of method embodiment one;
Fig. 5 is the first pass figure of method embodiment two;
Fig. 6 is second flow chart of method embodiment 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 provided of apparatus of the present invention embodiment one;
Figure 10 is among the MS that provided of apparatus of the present invention embodiment one, first structure chart of up path loss balancing module 901;
Among the MS that Figure 11 is provided for apparatus of the present invention embodiment one, 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, following with reference 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 related embodiment respectively, the present invention is described in more detail (hereinafter described RS is transparent RS).
Method embodiment 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 method embodiment one, and in this flow process, RS sends downlink reference signal under the control of BS.As shown in Figure 3, this method is specifically realized by following steps:
Common described downlink reference signal sends transmission power level and the 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.
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 be according to a preconcerted arrangement RS downlink reference signal feature (as frame characteristics) and BS downlink reference signal feature identification RS downlink reference signal, the also described RS downlink reference signal of RS downlink reference signal feature identification that can send according to BS.
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 bigger, can go to step 305 and solve this problem by after step 303.
Δ PL can have multiple computational methods, can embody with the Δ PL that obtains, the variation of relation between PL2 and the PL 1 (this relation can be obtained by methods such as l-G simulation test, data statisticss), PL2 is as the criterion to the influence 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 a 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 of BS downlink reference signal is shorter at interval, and in the difference moment, the variation of Δ PL is little.
Fig. 4 is second flow chart of method embodiment 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, this method is specifically realized by following steps:
Step 403～406 are with step 303～306.
Method embodiment two,
Transparent RS measures the uplink reference signals that MS sends, and the transmitted power calculating path loss value in conjunction with described uplink reference signals is notified to described MS with described path loss values, is used for MS and carries out the up path loss balancing.
Fig. 5 is the first pass figure of method embodiment two, and in this flow process, RS directly issues MS with the path loss values that obtains.As shown in Figure 5, this 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, require RS to have the allocation of radio resources ability usually, can divide to be used in the Radio Resource that sends PL3 to MS,, then need RS to ask Radio Resource, or initiatively be described RS distributing radio resource by BS to BS if RS does not have the allocation of radio resources ability.
Step 504～506 only are with the difference of step 304～306: PL1 is replaced with PL3.
Fig. 6 is second flow chart of method embodiment two, and in this flow process, RS issues BS with the path loss values that obtains, and by BS described path loss values is issued MS then.As shown in Figure 5, this method is specifically realized by following steps:
Step 601～602 are with step 501～502.
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 method embodiment two is based on measuring of uplink reference signals, therefore its effect generally is better than method embodiment one, if MS had both obtained PL1 or Δ PL among the method embodiment two, PL1 or Δ PL among the method embodiment one have been obtained again, PL1 or Δ PL among the then common method for optimizing embodiment two.
In method embodiment one and method embodiment two, if MS need 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 be provided with the PL1 term of validity and timing by the PL1 memory module among this PL1 initialization MS.
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 the foregoing description provides, be to carry out the background that is applied as in the uplink power control at MS with described method, those skilled in the art can be clear and definite, described power control is not that the path compensation method that is used for embodiment is provided limits, 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, the system embodiment and the portable terminal embodiment of the path compensation method that can supported said method embodiment be provided.
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, carry out the up path loss balancing in conjunction with the path loss values that the transmitting power of described reference signal is estimated;
Described RS is used for, and sends reference signal to described MS, or, the reference signal from described MS is measured, and, described path loss values is notified to described MS in conjunction with the transmitting power estimating path loss value of described reference signal.
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 provided 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, carry out the up path loss balancing in conjunction with the path loss values that the transmitting power of described reference signal is estimated.
Figure 10 is among the MS that provided of apparatus of the present invention embodiment one, 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 provided of apparatus of the present invention embodiment one, 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, after the second path compensation module 9017 sends selected indication, receives described expired indication, 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 after the acquisition path loss values, 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 provided, 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 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 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 (12)
1, a kind of path loss compensation method, this method are applied to comprise in the multi-hop mobile communication system of mobile station MS, transparent relay equipment RS and base station BS, 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.
2, the method for claim 1 is characterized in that, sends 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.
3, the method for claim 1 is characterized in that, sends 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, receives the described reference signal transmitting power of self-induced transparency RS or BS.
4, as claim 1 or 2 or 3 described methods, it is characterized in that, carry out the up path loss balancing according to described path loss values and comprise:
MS measures the reference signal that BS sends, and sends the transmitting power estimation reference path loss value of described reference signal in conjunction with BS;
MS obtains the path loss compensating factor by described path loss values and described reference path loss value;
MS carries out the up path loss balancing by reference path loss value and described path loss compensating factor.
5, method as claimed in claim 4 is characterized in that, carries out the up path loss balancing according to described path loss values and further comprises:
The term of validity of 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 described path loss values is crossed after date and do not upgraded yet, then MS carries out the up path loss balancing by reference path loss value and path loss compensating factor.
6, a kind of path loss bucking-out system is characterized in that, this system comprises 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, sent described path loss values to described MS in conjunction with the transmitting power estimating path loss value of described reference signal.
7, system as claimed in claim 6 is characterized in that, described system further comprises BS;
Described 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.
8, as claim 6 or 7 described systems, it is characterized in that,
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 issue BS, by BS described path loss values is issued described MS.
9, as claim 6 or 7 described systems, it is characterized in that 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 RS.
10, a kind of MS is characterized in that, 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.
11, MS as claimed in claim 10 is characterized in that, 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 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 BS sends 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;
The described 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.
12, MS as claimed in claim 11 is characterized in that, 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, after the described second path compensation module sends selected indication, receives described expired indication, send selected indication to the described first path compensating module;
The described 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;
The described 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 after the acquisition path loss values, sends the renewal indication to described term of validity setting module.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011038548A1 (en) * | 2009-09-30 | 2011-04-07 | 上海贝尔股份有限公司 | Method and device for uplink power control in communication system based on carrier aggregation |
| WO2011097817A1 (en) * | 2010-02-11 | 2011-08-18 | 上海贝尔股份有限公司 | Method and correlative device for communication within relay radio communication system |
| CN102395184A (en) * | 2011-06-30 | 2012-03-28 | 电信科学技术研究院 | Method and device for implementing uplink power control |
| WO2013060306A1 (en) * | 2011-10-28 | 2013-05-02 | 华为技术有限公司 | Method, user equipment, and access point for uplink power control |
| 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 |
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| CN103797866A (en) * | 2011-08-12 | 2014-05-14 | 株式会社Ntt都科摩 | Wireless communication system, wireless base station apparatus, user terminal, and method for wireless communication |
| CN103345205B (en) * | 2013-05-21 | 2015-07-15 | 国家电网公司 | Data verification-based AGC load optimizing controlling method |
| CN108076509A (en) * | 2018-02-09 | 2018-05-25 | 海能达通信股份有限公司 | A kind of Wireless MESH network power regulating method, device and equipment |
| CN109104698A (en) * | 2017-06-21 | 2018-12-28 | 翌勤通讯股份有限公司 | Distributed communication means and its system |
| CN110383906A (en) * | 2017-04-13 | 2019-10-25 | 上海朗帛通信技术有限公司 | A kind of user equipment that be used to wirelessly communicate, the method and apparatus in base station |
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| WO2023221807A1 (en) * | 2022-05-16 | 2023-11-23 | Mediatek Inc. | Power control for repeaters and multi-path communication |
Citations (3)
| 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 apparatus, and wireless relay method |
| US20070097928A1 (en) * | 2005-10-31 | 2007-05-03 | Anderson Nicholas W | Frequency domain unscheduled transmission in a TDD wireless communications system |
| 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8135337B2 (en) * | 2005-11-29 | 2012-03-13 | Telefonaktiebolaget Lm Ericsson | Scheduling in a wireless multi-hop relay network |
| WO2007068999A1 (en) * | 2005-12-16 | 2007-06-21 | Nokia Corporation | A relay |
-
2008
- 2008-03-04 CN CN2008101013183A patent/CN101527586B/en active Active
Patent Citations (3)
| 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 apparatus, and wireless relay method |
| US20070097928A1 (en) * | 2005-10-31 | 2007-05-03 | Anderson Nicholas W | Frequency domain unscheduled transmission in a TDD wireless communications system |
| 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 |
Cited By (27)
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|---|---|---|---|---|
| CN102474824A (en) * | 2009-09-30 | 2012-05-23 | 上海贝尔股份有限公司 | Method and device for uplink power control in communication system based on carrier aggregation |
| WO2011038548A1 (en) * | 2009-09-30 | 2011-04-07 | 上海贝尔股份有限公司 | Method and device for uplink power control in communication system based on carrier aggregation |
| 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 |
| WO2011097817A1 (en) * | 2010-02-11 | 2011-08-18 | 上海贝尔股份有限公司 | Method and correlative device for communication within relay radio communication system |
| CN102652444A (en) * | 2010-02-11 | 2012-08-29 | 上海贝尔股份有限公司 | Method and correlative device for communication within relay radio communication system |
| CN103416099A (en) * | 2011-03-11 | 2013-11-27 | 瑞典爱立信有限公司 | A radio base station and a method therein for scheduling radio resources |
| CN103416099B (en) * | 2011-03-11 | 2017-05-17 | 瑞典爱立信有限公司 | A radio base station and a method therein for scheduling radio resources |
| 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 |
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| CN103797866B (en) * | 2011-08-12 | 2017-11-21 | 株式会社Ntt都科摩 | Wireless communication system, radio base station apparatus, user terminal and wireless communications method |
| CN103797866A (en) * | 2011-08-12 | 2014-05-14 | 株式会社Ntt都科摩 | Wireless communication system, wireless base station apparatus, user terminal, and method for wireless communication |
| WO2013060306A1 (en) * | 2011-10-28 | 2013-05-02 | 华为技术有限公司 | Method, user equipment, and access point for uplink power control |
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| GB2514936B (en) * | 2011-10-28 | 2016-06-29 | Huawei Tech Co Ltd | Method, user equipment, and access point for uplink power control |
| CN106455030A (en) * | 2011-10-28 | 2017-02-22 | 华为技术有限公司 | Uplink power control methods, user equipment and access point |
| GB2514936A (en) * | 2011-10-28 | 2014-12-10 | Huawei Tech Co Ltd | Method, user equipment, and access point for uplink power control |
| 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 |
| CN110383906A (en) * | 2017-04-13 | 2019-10-25 | 上海朗帛通信技术有限公司 | A kind of user equipment that be used to wirelessly communicate, the method and apparatus in base station |
| US11096127B2 (en) | 2017-04-13 | 2021-08-17 | Shanghai Langbo Communication Technology Company Limited | Method and device in UE and base station for transmit power control |
| CN109104698A (en) * | 2017-06-21 | 2018-12-28 | 翌勤通讯股份有限公司 | Distributed communication means and its system |
| CN109104698B (en) * | 2017-06-21 | 2021-09-07 | 翌勤通讯股份有限公司 | Distributed communication method and system |
| CN108076509A (en) * | 2018-02-09 | 2018-05-25 | 海能达通信股份有限公司 | A kind of Wireless MESH network power regulating method, device and equipment |
| CN111263380A (en) * | 2018-11-30 | 2020-06-09 | 中国移动通信集团浙江有限公司 | Abnormal repeater identification method and device |
| WO2023221807A1 (en) * | 2022-05-16 | 2023-11-23 | Mediatek Inc. | Power control for repeaters and multi-path communication |
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