CN101123457B - Power control method for retransfer indication channel in high-speed uplink packet access - Google Patents
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Abstract
The invention discloses a power control method to retransmit and confirm indication channels in high speed upstream grouping and access, which comprises the following steps. Information transmission error probability on related channels of feedback information is detected within preset time windows. If the information transmission error probability is more than corresponding first preset value, power gain factors of corresponding feedback information shall be increased. If the information transmission error probability is less than a corresponding second preset value, the power gain factors of corresponding feedback information are reduced. The invention also discloses power control device to retransmit and confirm an indication channel in high speed upstream grouping and access. In the invention, the power gain factors of the feedback information used on E-HICH based on the transmission error probability of related channels are adjusted, namely, sending power of the feedback information is adjusted; in this way, the E-HICH power is controlled.
Description
Technical field
The present invention relates to high speed uplink packet and insert (HSUPA, High Speed Uplink PackageAccess) technology, relate in particular to the Poewr control method of retransfer indication channel among a kind of HSUPA (E-HICH, E-DCHHARQ Acknowledgement Indicator Channel).
Background technology
For the throughput that improves network data transmission, improve the sub-district covering power, reduce data transmission delay, time division duplex (TDD) system has introduced the HSUPA technology.When adopting HSUPA technical transmission data, its process as shown in Figure 1.In step 101, base station (NodeB) sends resource scheduling information to subscriber equipment (UE, User Equipment) by descending absolute grant channel (E-AGCH, Enhanced Uplink Absolute Grant Channel).In step 102, UE on the physical resource of described NodeB scheduling, sends data by up physical channel (E-PUCH, Enhanced Uplink Physical Channel) to described NodeB behind system official hour interval.In step 103, described NodeB decodes to data after E-PUCH receives data from UE, if decoding correctly then obtain confirming (ACK) information, otherwise obtains (NACK) unconfirmed information.In step 104, described NodeB is by descending E-HICH, and to UE feeding back ACK/nack message, UE will obtain the ACK/NACK information of described NodeB feedback.In step 105, if the feedback information that UE obtains is ACK, then when UE receives the new resource scheduling information of described NodeB, will the new data of transmission; If the feedback information that UE obtains is NACK, and the number of transmissions of this data block do not reach the restriction of maximum transmission times as yet, then when UE receives the new resource scheduling information of described NodeB, with data retransmission.
After the TDD system adopts the HSUPA technology, for improving the level of resources utilization, save the code channel resource expense, as NodeB during to a plurality of UE feeding back ACKs/nack message, can encode to the feedback information of each UE respectively earlier, with on information multiplexing to a code channel behind each coding, on an E-HICH, transmit again; Each UE can recover one's own ACK/NACK information by the orthogonality between the feedback information coding.Wherein, E-HICH is the down physical channel that the TDD system introduces in the HSUPA technology, is used for base station (NodeB) to UE feeding back ACK/nack message.
Because position and the channel circumstance of different UEs in the sub-district is discrepant, so when by E-HICH during to different UE feedback information, need different transmitted powers, therefore, need control adjustment the E-HICH transmitted power along with the variation of the mobile and channel circumstance of UE in the sub-district.
If E-HICH and other channel, for example E-AGCH, DPCH (DPCH, Dedicated Physical Channel) etc., be in same time slot, then the transmitted power of E-HICH can add that a power bias is provided with reference to the transmitted power of these channels, or with reference to carrying out the power adjustment at the power control command of these channels, if but two channels are positioned at different time slots, then can cause two channels all can not reach optimum power control owing to the difference of interference power.
Can also utilize UE at E-PUCH or random access control channel (E-RUCCH, E-DCHRandom Access Uplink Control Channel) goes up the power that the circuit loss value information that sends is controlled E-HICH, but have only when E-HICH is positioned at specific beacon (beacon) time slot, the path loss of described circuit loss value and E-HICH is just the most relevant.
As can be seen, the existing method that the E-HICH transmitted power is controlled mainly is the power that reference and E-HICH are in other channel of same time slot, but in actual conditions, can't guarantee that E-HICH and other channel always are in same time slot.
Summary of the invention
In view of this, the technical problem of the present invention's solution provides the control method of E-HICH transmitted power among a kind of HSUPA.By this method need not reference and E-HICH be in the power of other channel of same time slot, can finish control to the E-HICH transmitted power, can under the prerequisite that guarantees the E-HICH transmission quality, reduce the waste of unnecessary power resource.
The present invention includes:
The Poewr control method of retransfer indication channel during a kind of high speed uplink packet inserts comprises:
In the time window of presetting length, detect in the enhancing dedicated channel and mix the error of transmission that automatic retransfer indication channel (E-HICH) is gone up each feedback information generation;
When described feedback information is the affirmation information (ACK) that feeds back to subscriber equipment (UE), the retransmission sequence number information (RSN) that corresponding UE sends is not 0 o'clock, described feedback information generation error of transmission;
When described feedback information is the nonacknowledgement information (NACK) that feeds back to UE, the RSN that corresponding UE sends is 0, and the number of transmissions of the pairing transmission block of described NACK is not when reaching the maximum transmission times restriction, described feedback information generation error of transmission;
In the time window of described presetting length, add up the number of times of described feedback information generation error of transmission, obtain the message transmission error probability of each feedback information on described E-HICH;
When described message transmission error probability greater than corresponding first preset value, then raise the power gain factors of respective feedback information; When described message transmission error probability less than corresponding second preset value, then reduce the power gain factors of respective feedback information.
Wherein, further comprise:
For the power gain factors of each feedback information is provided with minimum threshold; If the power gain factors of adjusted feedback information is less than minimum threshold, then minimum threshold is set to the power gain factors of described feedback information.
Wherein, further comprise:
The wealthy family limit value of the transmitted power of E-HICH is set; If the total transmitted power of adjusted described each feedback information is greater than described threshold value,, correspondingly reduce the power gain factors of each feedback information then with reference to described high threshold.
In the present invention, control is to realize by the adjustment to the power gain factors of multiplexing each feedback information on E-HICH to the power of E-HICH.By the message transmission error probability on the correlated channels that in the time window that pre-sets, detects each feedback information, can adjust the power gain factors of each feedback information, promptly the transmitted power of each feedback information is adjusted, also just realized control the power of E-HICH.
As can be seen, the transmission error probability that method of the present invention and device all are based on correlated channels is controlled the power of E-HICH, and need not reference and E-HICH be in the power of other channel of same time slot.
Description of drawings
Fig. 1 is the flow chart that adopts HSUPA technical transmission data;
Fig. 2 is the schematic diagram by the feedback information of a plurality of UE of E-HICH multiplexing transmission;
Fig. 3 is the flow chart of the inventive method embodiment 1;
Fig. 4 is a method flow diagram of judging that feedback information ACK/NACK transmission makes a mistake;
Fig. 5 is the flow chart of the inventive method embodiment 2;
Fig. 6 is the flow chart of the inventive method embodiment 3;
Fig. 7 is the schematic diagram of apparatus of the present invention embodiment 1;
Fig. 8 is the schematic diagram of apparatus of the present invention embodiment 2;
Fig. 9 is the schematic diagram of apparatus of the present invention embodiment 3.
Embodiment
In the HSUPA technology,, save the code channel resource expense for improving the level of resources utilization, as NodeB during to a plurality of UE feeding back ACKs/nack message, can encode to each feedback information respectively earlier, with on information multiplexing to a code channel behind each coding, on an E-HICH, transmit again; Each UE can recover one's own information by the orthogonality between the feedback information coding.Fig. 2 is the schematic diagram by a plurality of feedback informations of E-HICH multiplexing transmission.In Fig. 2, NodeB at first carries out coded modulation respectively to the ACK/NACK information that feeds back to each UE, then the data after the coded modulation of each feedback information are multiplied each other with separately power gain factors respectively, adjusted data obtain gaining, the adjusted data that then each gained are carried out multiplexing, spread spectrum, at last the data message after the spread spectrum are mapped to the E-HICH channel.
As can be seen, because what carry is a plurality of feedback informations on the same code channel, and therefore the position difference of each UE, channel circumstance difference, reach the same quality of reception for making each UE, needs to adjust the power gain factors of each feedback information.By adjusting the power gain factors of each feedback information, can adjust the transmitted power of each feedback information coding modulation data, just the transmitted power of E-HICH is controlled, the transmitted power of each feedback information and corresponding channel circumstance are complementary.
Core concept of the present invention is: according to the environment of transmission channel, the message transmission error probability of the correlated channels by each feedback information is adjusted the power gain factors of each feedback information, just the transmitted power of each feedback information is adjusted; Adjustment by to the transmitted power of multiplexing each feedback information on E-HICH has realized the control to the transmitted power of E-HICH.That is to say that the present invention is exactly by the adjustment to the power gain factors of multiplexing each feedback information on E-HICH, realize the power of E-HICH is controlled.
The transmission Block Error Rate of transmission error probability by E-HICH or the E-PUCH of the pairing UE of each feedback information can be adjusted the power gain factors of feedback information.
Below, be adjusted into example with power gain factors to the feedback information of a UE, in conjunction with the embodiments 1, the method that the transmission error probability that adopts E-HICH is adjusted the feedback information power gain factors is done further and is specified.
Fig. 3 is the flow chart of this method, in step 301, the time window length that detects E-HICH is set, and the length of time window represents that with the number of feedback information for example: if time window is set is w, and then being illustrated in needs to detect w feedback information in the time window.In step 302, in a time window, the feedback information that sends to certain UE is detected, and the number of times of statistics feedback information generation error of transmission.In step 303, according to the corresponding power gain factors of number of times adjustment of the feedback information of error of transmission, concrete method of adjustment is: if the number of times of transmission of feedback information mistake surpasses the first preset value TH
a, then raise corresponding power gain factors; If the number of times of transmission of feedback information mistake does not reach the second preset value TH
b, then reduce corresponding power gain factors; Other situation is not then adjusted corresponding power gain factors.Wherein, TH
aAnd TH
bMay equate, also may be unequal, should be as the case may be or emulation be provided with.
Wherein, all should require to determine to the increment of power gain factors rise and the increment of downward modulation, or determine according to emulation according to reality.In order to guarantee transmission quality, the increment of downward modulation should be less than the increment that raises.
In said method, though there is not directly to calculate the transmission error probability of E-HICH,, owing to the length of time window is fixed, so can embody the essence of statistics " transmission error probability " by the number of times of statistics transmission of feedback information mistake.And, only add up the number of times of transmission of feedback information mistake, also easier in actual applications realization.
Can also carry out rapid adjustment to power gain factors according to instantaneous feedback information error situation, it is 1 that the time window length that detects E-HICH promptly is set, and NodeB can detect 1 feedback information.If detect the transmission of feedback information mistake, then raise corresponding power gain factors; If it is correct to detect transmission of feedback information, then reduce corresponding power gain factors.All should require to determine to the increment of the rise of power gain factors and the increment of downward modulation, or determine according to emulation according to reality.In order to guarantee transmission quality, the increment of downward modulation should be less than the increment that raises.
In embodiment 1 described two methods, the method for judgement transmission of feedback information mistake as shown in Figure 4.In step 401, NodeB sends and feeds back to UE.Then, in step 402, NodeB receives data and retransmission sequence number (RSN, Retransmission SequenceNumber) information from described UE once more.Wherein, if RSN is 0, represent that described data are the data of the new transmission of UE; If RSN is 1, represent that described data are the data that UE retransmits.Then, in step 403, NodeB will judge whether feedback information error of transmission takes place, and its process specifically comprises according to feedback information that sends and the RSN information that obtains in step 402 in step 401:
If feedack is ACK in step 401, and the RSN that obtains in step 402 is not 0, represents that then transmission of feedback information makes a mistake; If feedback information is NACK in step 401, and the RSN that obtains in step 402 is 0, and the number of transmissions of the pairing transmission block of feedback information NACK do not reach the maximum transmission times restriction, represents that then transmission of feedback information makes a mistake; Other situation thinks that then transmission of feedback information is correct.
If certain transmission of data blocks is mistake always, when the number of transmissions reaches the maximum transmission times restriction, then no longer carry out the re-transmission of this data block, but transmit new data block.Therefore, if feedback information is NACK in step 401, the RSN that obtains in step 402 is 0, if the number of transmissions of the pairing transmission block of this feedback information NACK does not reach the maximum transmission times restriction, then represents the transmission of feedback information mistake.
In the actual conditions, a kind of situation may appear: if the RSN that obtains in step 402 is 0, and when the number of transmissions of the pairing transmission block of feedback information reaches the maximum transmission times restriction, can't judge then whether feedback information error of transmission takes place.But the probability that this situation occurs is very little, tangible influence can not arranged to final statistics, so think that in this case transmission of feedback information is correct.
In embodiment 1, understand the method for the transmission error probability adjustment feedback information power gain factors that adopts E-HICH specifically, in the actual conditions, also can adjust the feedback information power gain factors by the transmission Block Error Rate of E-PUCH.
Below, be adjusted into example with power gain factors to the feedback information of a UE, in conjunction with the embodiments 2, the method for adjusting the feedback information power gain factors according to the transmission Block Error Rate of E-PUCH done further specifying.
Fig. 5 is the flow chart of this method, in step 501, the time window length that detects E-PUCH is set, the length of time window is represented with the number of transmission data block, for example: if time window is set is w, and then being illustrated in the time window needs to detect the w data transfer.In step 502, in a time window, the transmission Block Error Rate of statistics on E-PUCH.In step 503, a plurality of Block Error Rates are carried out smoothly obtaining the smooth value of a Block Error Rate.In step 504, smooth value that obtains and the Block Error Rate that pre-sets are compared, and correspondingly adjust power gain factors according to comparative result, concrete method of adjustment is: if this smooth value surpasses the first preset value th
a, then raise corresponding power gain factors; If this smooth value does not reach the second preset value th
b, then reduce corresponding power gain factors; Other situation is not then adjusted corresponding power gain factors.Wherein, th
aAnd th
bMay equate, also may be unequal, should be as the case may be or emulation be provided with.
Wherein, all should require to determine to the increment of the rise of power gain factors and the increment of downward modulation, or determine according to emulation according to reality.In order to guarantee transmission quality, the increment of downward modulation should be less than the increment that raises.
In said method,, realize adjustment to the feedback information power gain factors by the Block Error Rate of time window statistics E-PUCH directly is set.In actual conditions, also the target signal interference ratio information that can provide by the exterior ring power control of E-PUCH is adjusted the power gain factors of feedback information.
The exterior ring power control of E-PUCH is exactly the Block Error Rate according to the E-PUCH transfer of data of statistics, target signal interference ratio to E-PUCH is adjusted setting, its method is similar to said method, comprising: detect the transmission Block Error Rate on the E-PUCH, the transmission Block Error Rate on the statistics E-PUCH; Block Error Rate and a target Block Error Rate with statistics compare, and then obtain new target signal interference ratio according to the outer-loop power controlling method of design.New target signal interference ratio deducts old target signal interference ratio, and its difference is exactly the increment of target signal interference ratio.
As can be seen, the exterior ring power control by E-PUCH can reflect the situation of change of the Block Error Rate of E-PUCH, and the variation of the variation of Block Error Rate and channel circumstance is relevant.Therefore can adjust the transmitted power of feedback information by the exterior ring power control of E-PUCH.
Below, be adjusted into example with power gain factors to the feedback information of a UE, in conjunction with the embodiments 3, the method for adjusting the feedback information power gain factors according to the exterior ring power control of E-PUCH done further specifying.
Fig. 6 is the flow chart of this method, in step 601, sets up the mapped function relation between the target signal interference ratio increment of E-PUCH channel outer ring power control of the power gain factors increment of feedback information and corresponding UE.In step 602, detect and add up the transmission Block Error Rate on the described E-PUCH, and, calculate new target signal interference ratio according to E-PUCH exterior ring power control algolithm according to the transmission Block Error Rate of adding up.In step 603, new target signal interference ratio deducts old target signal interference ratio, and its difference is exactly the increment of target signal interference ratio.Then, in step 604, obtain the power gain factors increment of described feedback information according to the mapped function relation of in step 601, setting up.Then, in step 605, power gain factors and the addition of described power gain factors increment with described feedback information obtain new power gain factors.
More particularly, if the power gain factors increment of the feedback information that sends to certain UE is Δ G, if the target signal interference ratio increment of the E-PUCH channel outer ring power of this UE control is Δ x, then the mapped function relation between Δ G and the Δ x can be expressed as Δ G=f (Δ x), wherein, f () is a mapping function, can specifically determine by emulation or specific requirement.For example, if Δ G and the mapped function relation between the Δ x set up are a kind of simple mapped function relation, be Δ G=step*sgn (Δ x), working as increment Delta x so is timing, increment Delta G is also for just, and promptly power gain factors will raise, when increment Delta x when negative, increment Delta G also for negative, promptly will reduce by power gain factors; Wherein, step determines according to reality requirement or emulation for adjusting step-length; Sgn () is a sign function.
When carrying out power respectively when adjusting, also should consider the phase mutual interference between each feedback information to being multiplexed into a plurality of feedback informations on the same E-HICH.When the quantity that is multiplexed into the feedback information on the same E-HICH was many, the phase mutual interference meeting between the feedback information was more serious; When the quantity that is multiplexed into the feedback information on the same E-HICH was fewer, the phase mutual interference between the feedback information was lighter relatively.Therefore, when the power that is multiplexed into each feedback information on the same E-HICH is adjusted, should consider the phase mutual interference between each feedback information,, the power gain factors rise of each feedback information or the increment of downward modulation are set according to the quantity of the feedback information on the same E-HICH.
In embodiment 1, embodiment 2 or embodiment 3 described methods, when time window being set E-HICH or E-PUCH is detected, if it is very long that time window is provided with, for example: in embodiment 2, if the time window that is provided with is very long, in embodiment 3, the representative value of exterior ring power control cycle was near 1 second, the frequency of transmitted power of then adjusting E-HICH is very low, will reduce the effect that the transmitted power of E-HICH is controlled like this; If with time window be provided with shorter, for example: the time window that is provided with in embodiment 1 is shorter relatively, though can adjust fast the transmitted power of E-HICH like this, can make the transmitted power of E-HICH produce bigger fluctuation, also may make the quality of reception of UE produce fluctuation.Therefore, in actual applications, be as the case may be, specific requirement, the length of time window reasonably is provided with.
In addition, embodiment 1 described method and embodiment 3 described methods can be carried out combination, promptly, can obtain a fast-changing power gain factors increment Delta G1 of the feedback information of UE according to embodiment 1 described method, obtain another power gain factors increment Delta G2 that slowly changes of the feedback information of this UE according to embodiment 3 described methods.Two power gain factors increments according to shown in the formula 1, are carried out weighting respectively and sue for peace, obtain the compromise power gain factors increment of this UE
ΔG＝α1·ΔG1+α2·ΔG2 (1)
Wherein, α 1 and α 2 are weighted factor, obtain by emulation or specific requirement; Δ G is the power gain factors increment of compromise.
As can be seen,, can avoid the transmitted power of E-HICH big fluctuation to occur, make the transmitted power of E-HICH more steady by two power gain factors increments are weighted.
Time window length that detects E-HICH and the time window length that detects E-PUCH are set respectively;
In corresponding time window, on E-HICH, detect and add up the number of times of each feedback information generation error of transmission respectively, and add up the transmission Block Error Rate on each corresponding E-PUCHE, each Block Error Rate is carried out smoothly;
The error of transmission number of times and the corresponding preset value of each feedback information are compared, obtain power gain factors first increment of each feedback information; The smooth value of each Block Error Rate and the Block Error Rate that pre-sets are compared, obtain power gain factors second increment of each feedback information;
Power gain factors first increment and power gain factors second increment to each feedback information are weighted respectively, and summation;
Adjust the power gain factors of described each feedback information by the power gain factors increment after the summation.
In actual applications, system all should be provided with a minimum value G to the power gain factors that E-HICH goes up each feedback information
MinIf the power gain factors after adjusting is less than G
Min, then power gain factors is set according to minimum value.Can prevent like this influences the quality of reception of UE because mistuning causes transmitted power too small.
In actual applications, system is that E-HICH is provided with maximum transmit power P
Max, promptly the transmitting power of the single code channel of E-HICH can not surpass P
MaxAfter each feedback information is multiplexing, if the transmitted power of E-HICH is greater than P
Max, then can dwindle each power gain factors according to certain method, thereby the transmitting power of E-HICH is reduced to P
Max
In actual applications, be multiplexed into the setting of the power gain factors initial value of each feedback information on the E-HICH, also should consider the influence of multiplexing number of users.In order to simplify,, can carry out predefine to the power gain factors initial value to some situations of typical users multiplexing number.
Based on said method the present invention also provide high speed uplink packet insert in the output control device of retransfer indication channel, this device is done further below in conjunction with embodiment to specify.
The output control device of retransfer indication channel during a kind of high speed uplink packet that illustrates Fig. 7 inserts, this device comprises: Channel Detection unit 701 and power adjustment unit 702.
Can in the time window that pre-sets, detect the message transmission error probability on the correlated channels of each feedback information by Channel Detection unit 701, and testing result is sent to power adjustment unit 702.Message transmission error probability and corresponding preset value can be compared by power adjustment unit 702, when the message transmission error probability greater than corresponding first preset value, then raise the power gain factors of respective feedback information; If described message transmission error probability less than corresponding second preset value, is then reduced the power gain factors of respective feedback information.
The output control device of retransfer indication channel during the another kind of high speed uplink packet that illustrates Fig. 8 inserts, this device comprises: E-HICH detecting unit 801, power first increment unit 802, E-PUCH detecting unit 803, power second increment unit 804, power increment processing unit 805 and power adjustment unit 806.
Can in the very first time window that pre-sets, on E-HICH, detect and add up the number of times of each feedback information generation error of transmission respectively by E-HICH detecting unit 801, and statistics is sent to power first increment unit 802.The error of transmission number of times and the corresponding preset value of described each feedback information can be compared by power first increment unit 802, obtain power gain factors first increment of described each feedback information, and power gain factors first increment of each feedback information is sent to power increment processing unit 805.Can be in second time window that pre-sets by E-PUCH detecting unit 803, add up the transmission Block Error Rate on the E-PUCH of the pairing UE of described each feedback information, each Block Error Rate is carried out smoothly, and the smooth value of each Block Error Rate is sent to power second increment unit 804.The smooth value of described each Block Error Rate and the Block Error Rate that pre-sets can be compared by power second increment unit 804, obtain power gain factors second increment of described each feedback information, and power gain factors second increment of each feedback information is sent to power increment processing unit 805.In power increment processing unit 805, can power gain factors first increment and power gain factors second increment of described each feedback information be weighted respectively, and summation, the power gain factors increment after the summation is sent to power adjustment unit 806.Can adjust the power gain factors of described each feedback information by the power gain factors increment after the summation by power adjustment unit 806.
The output control device of retransfer indication channel during the third high speed uplink packet that illustrates Fig. 9 inserts, this device comprises: map unit 901, exterior ring power control unit 902, power gain factors increment obtain unit 903 and power adjustment unit 904.
Can set up the increment and the mapping relations between the target signal interference ratio increment of each E-PUCH accordingly of the power gain factors of each feedback information by map unit 901, and described mapping relations are sent to the power gain factors increment obtain unit 902.By exterior ring power control unit 902, can detect the transmission Block Error Rate of described each E-PUCH, transmission Block Error Rate and exterior ring power control algolithm according to each E-PUCH obtain the target signal interference ratio, obtain the target signal interference ratio increment of each E-PUCH, and the target signal interference ratio increment of each E-PUCH is sent to power gain factors increment acquisition unit 903.Obtain in the unit 903 at the power gain factors increment, according to the target signal interference ratio increment of each E-PUCH and the mapping relations of in map unit, setting up, obtain the power gain factors increment of corresponding each feedback information, and the power gain factors increment of each feedback information is sent to power adjustment unit 904.Can be by power adjustment unit 904 according to the power gain factors of corresponding each feedback information of the power gain factors increment adjustment of described each feedback information.
Claims (3)
1. the Poewr control method of retransfer indication channel is characterized in that during a high speed uplink packet inserted, and comprising:
In the time window of presetting length, detect in the enhancing dedicated channel and mix the error of transmission that automatic retransfer indication channel (E-HICH) is gone up each feedback information generation;
When described feedback information is the affirmation information (ACK) that feeds back to subscriber equipment (UE), the retransmission sequence number information (RSN) that corresponding UE sends is not 0 o'clock, described feedback information generation error of transmission;
When described feedback information is the nonacknowledgement information (NACK) that feeds back to UE, the RSN that corresponding UE sends is 0, and the number of transmissions of the pairing transmission block of described NACK is not when reaching the maximum transmission times restriction, described feedback information generation error of transmission;
In the time window of described presetting length, add up the number of times of described feedback information generation error of transmission, obtain the message transmission error probability of each feedback information on described E-HICH;
When described message transmission error probability greater than corresponding first preset value, then raise the power gain factors of respective feedback information; When described message transmission error probability less than corresponding second preset value, then reduce the power gain factors of respective feedback information.
2. method according to claim 1 is characterized in that, further comprises:
For the power gain factors of each feedback information is provided with minimum threshold; If the power gain factors of adjusted feedback information is less than minimum threshold, then minimum threshold is set to the power gain factors of described feedback information.
3. method according to claim 1 is characterized in that, further comprises:
The wealthy family limit value of the transmitted power of E-HICH is set; If the total transmitted power of adjusted described each feedback information is greater than described threshold value,, correspondingly reduce the power gain factors of each feedback information then with reference to described high threshold.
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| CN101568171B (en) * | 2008-04-25 | 2012-01-25 | 中兴通讯股份有限公司 | Closed loop power control method of non-scheduling service in high-speed uplink packet access technique |
| CN102333364A (en) * | 2010-07-13 | 2012-01-25 | 鼎桥通信技术有限公司 | Configuration method of high-speed uplink packet access control channel transmission power |
| CN103379606B (en) * | 2012-04-24 | 2016-04-13 | 中兴通讯股份有限公司 | A kind of method of control E-HICH transmitting power and base station |
| WO2015062008A1 (en) | 2013-10-31 | 2015-05-07 | 华为技术有限公司 | Method and apparatus for transmitting broadcast multicast signal-frequency network measurement data |
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| CN1653715A (en) * | 2002-05-09 | 2005-08-10 | 诺基亚有限公司 | Multiple level power control command signaling |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1653715A (en) * | 2002-05-09 | 2005-08-10 | 诺基亚有限公司 | Multiple level power control command signaling |
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