CN101720121B - User power allocation method on E-HICH and base station - Google Patents

Abstract

The invention discloses a user power allocation method on an E-HICH and a base station. The method comprises the following steps: receiving SNPL index of path losses of a service cell and a neighboring cell reported by each user equipment (UE); according to the SNPL index, querying a mapping relation table of a logarithm domain path loss ratio of the SNPL index to the service cell and the neighboring cell to obtain a logarithm domain path loss range interval corresponding to the SNPL index; according to a preset dereferencing rule, selecting the logarithm domain path loss ratio which meets the requirement from the range interval; converting the logarithm domain path loss ratio into a corresponding linear domain path loss ratio; according to the linear domain path loss ratio of each UE, determining an amplitude allocation factor of each UE; and according to the determined amplitude allocation factor of each UE, finishing the power allocation of each user on the E-HICH. In the technical scheme disclosed by the invention, the optimal allocation of power can be achieved according to the different positions of users; and the receiving quality of the E-HICH of each user is improved.

Description

User power allocation method on a kind of E-HICH and base station

Technical field

The present invention relates to mobile communication technology; Relate in particular to E-HICH (E-DCH Hybrid ARQ Indicator Channel among a kind of HSUPA (high speed uplink packet access); E-DCH (dedicated channel of enhancing, Enhanced Dedicated Channel) mixed automatic re-transmission indicating channel) user power allocation method and system on.

Background technology

In mobile communication technology,, introduced the HSUPA technology in order to realize high speed data transfer.Four physical channels in HSUPA, have been introduced, comprising the E-HICH channel.The E-HICH channel is carried by the downlink physical channel of a spreading factor SF=16; Be used to carry the feedback information of base station to the user; For example can carry an ACK/NACK with a plurality of users and indicate, the base station receives correctness when being used to feed back each user uplink data frame through the E-PUCH transmission.Wherein, the ACK/NACK of dispatching services and non-scheduling service indication is sent on different E-HICH respectively, for non-scheduling service; E-HICH is except loading ACK/NACK indication; Also to carry and be used for another physical channel of HSUPA, i.e. E-PUCH (E-DCH Physical Uplink Channel, E-DCH physical uplink channel) power control and synchronous TPC (transmission power control; Through-put power is controlled) and SS (synchronization shift, simultaneous bias) territory.

Fig. 1 shows the structural representation of the field feedback that E-HICH upward carries in the prior art.As shown in Figure 1, the ACK/NACK that on E-HICH, carries M user indicates, and modulates the symbol after obtaining modulating behind each user's ACK/NACK indication information process secondary spread spectrum, bit filling, the bit scramble

J=1 ... M, wherein, n=1 ... N _k, be the modulation symbol numbering; I=1,2, be the data field numbering; K is the ovsf code numbering.Wherein, for non-scheduling service, TPC/SS information also obtains modulation symbol through same process, again with the compound symbol that obtains of ACK/NACK symbol

Be respectively each user's modulation symbol

Configure amplitude distribution factor gj, j=1 ... M, the modulation symbol that will dispose M user of amplitude allocation factor then carries out compound, obtains { n=1 ... N _k, i=1,2} send to UE (subscriber equipment).Wherein, the power that on E-HICH, distributes for each user does

The power of distribution that is visible as each user is by said amplitude allocation factor g _jDecision.

Wherein, The power that on E-HICH, distributes for each user can be provided with respectively by Node B; But the allocation rule that does not still have a kind of standard in the prior art, common way are to adopt the maximum power apportion design, promptly according to the poorest user of received signal quality the power that satisfies this user's quality of reception are set; For carrying out constant power according to this power, each user distributes then, i.e. g among Fig. 1 _j, j=1 ... M all equates.So, for received signal quality user preferably, will certainly cause power dissipation, in addition, more powerful E-HICH can bring interference to other channel with time slot.

Thus it is clear that, can't reach distributing rationally of power according to the difference of user present position in the prior art.

Summary of the invention

In view of this, on the one hand the user power allocation method on a kind of E-HICH is provided among the present invention, provides a kind of E-HICH of realization to go up the base station that user power is distributed on the other hand, distribute with the user power that is implemented in the optimization on the E-HICH.

User power allocation method on the E-HICH provided by the present invention comprises:

Receive the Serving cell and the adjacent area path loss SNPL index of each reported by user equipment UE;

According to said SNPL index, the logarithm domain path loss of inquiry SNPL index and Serving cell and adjacent sub-district is than mapping relations table, and the logarithm domain path loss that obtains corresponding said SNPL index is more interval than scope;

According to the value rule of setting, from said scope interval, choose the logarithm domain path loss ratio that meets the demands;

Convert said logarithm domain path loss ratio into the corresponding linear domain path loss ratio;

According to the linear domain path loss ratio of each UE, confirm the amplitude allocation factor of each UE;

According to the amplitude allocation factor of determined each UE, accomplish the power division that E-HICH goes up each user.

Preferably, said according to each UE linear domain path loss ratio, confirm that the amplitude allocation factor of each UE comprises:

According to M UE linear domain path loss ratio

J=1 ... M is according to formula $g_j=\sqrt{\frac{{\mathrm{\Φ}}_j}{\underset{m=1}{\overset{M}{\mathrm{\Σ}}}{\mathrm{\Φ}}_m}},$ Confirm the amplitude allocation factor g of each UE _j, j=1 ... M.

Preferably; Said converting into after the corresponding linear domain path loss ratio; According to each UE linear domain path loss ratio; Confirm further to comprise before the amplitude allocation factor of each UE: respectively each linear domain path loss ratio of each UE is carried out The disposal of gentle filter, obtain the linear domain path loss ratio behind each UE smothing filtering.

Preferably, the value rule of said setting comprises: the neighborhood value of from said scope interval, choosing the boundary value or the setting boundary value of mean value or median or setting.

Preferably, this method further comprises:

In the time cycle of each setting, add up the quality of reception situation of each UE to E-HICH;

Each UE that obtains according to statistics controls the transmitting power of E-HICH the quality of reception situation of E-HICH.

Preferably; Said in the time cycle of each setting; Adding up each UE comprises the quality of reception situation of E-HICH: in the time cycle of each setting; The retransmission sequence of the dedicated channel physical uplink channel E-PUCH transmission that strengthens among the same UE current transmission time interval TTI is numbered the ACK/NACK feedback of a last TTI in RSN and the same HARQ process of this UE and carry out binding analysis, judge whether this UE has correctly received the E-HICH of a last TTI base station feedback, obtain this UE does not correctly receive E-HICH in this time cycle number of times; Correctly do not receive the number of times of E-HICH according to each UE in this time cycle, obtain the false drop rate that each UE receives E-HICH;

Said each UE that obtains according to statistics is to the quality of reception situation of E-HICH; The transmitting power of E-HICH controlled comprise: from each UE receives the false drop rate of E-HICH, choose to satisfy and set the value that requires; And selected value and the first adjustment threshold value that is provided with in advance compared; If, then step-length is adjusted in one first of the current transmit power rising of E-HICH more than or equal to the said first adjustment threshold value; Otherwise, the current transmit power of E-HICH is reduced by one first adjustment step-length.

Preferably; Said in the time cycle of each setting; Adding up each UE comprises the quality of reception situation of E-HICH: in the time cycle of each setting; The ACK/NACK of a last TTI feeds back and carries out binding analysis in the RSN that E-PUCH in the same UE current TTI is transmitted and the same HARQ process of this UE, judges whether this UE has correctly received the E-HICH of a last TTI base station feedback, obtains this UE does not correctly receive E-HICH in this time cycle number of times;

Said each UE that obtains according to statistics is to the quality of reception situation of E-HICH; The transmitting power of E-HICH controlled comprise: from each UE does not correctly receive the number of times of E-HICH, choose to satisfy and set the value that requires; And selected value and the second adjustment threshold value that is provided with in advance compared; If, then step-length is adjusted in one second of the current transmit power rising of E-HICH more than or equal to the said second adjustment threshold value; Otherwise, the current transmit power of E-HICH is reduced by one second adjustment step-length.

Preferably, the said value that satisfies the setting requirement of choosing is: choose maximum.

Realization E-HICH provided by the present invention goes up the base station that user power is distributed, and comprising:

Receiver module is used to receive the SNPL index that each UE reports;

Enquiry module is used for according to said SNPL index, and the logarithm domain path loss of inquiry SNPL index and Serving cell and adjacent sub-district is than mapping relations table, and the logarithm domain path loss that obtains corresponding said SNPL index is more interval than scope;

Numerical value is chosen module, is used for from said scope interval, choosing the logarithm domain path loss ratio that meets the demands according to the value rule of setting;

Modular converter is used for converting said logarithm domain path loss ratio into the corresponding linear domain path loss ratio;

The amplitude factor determination module is used for confirming the amplitude allocation factor of each UE according to each UE linear domain path loss ratio;

The power division module is used for the amplitude allocation factor according to determined each UE, accomplishes the power division that E-HICH goes up each user.

Preferably, this base station further comprises: the The disposal of gentle filter module, be used for respectively the linear domain path loss ratio of each UE of modular converter conversion is carried out The disposal of gentle filter, and the linear domain path loss ratio after the The disposal of gentle filter is offered the amplitude factor determination module.

Preferably, this base station further comprises:

Statistical module was used in the time cycle of each setting, added up the quality of reception situation of each UE to E-HICH;

Power control module, each UE that is used for obtaining according to said statistical module counts controls the transmitting power of E-HICH the quality of reception situation of E-HICH.

Preferably, said statistical module comprises: analyze submodule, statistics submodule and numerical value conversion submodule; Said power control module comprises: choose submodule, comparison sub-module and control submodule; Wherein,

Said analysis submodule was used in the time cycle of each setting; The ACK/NACK of a last TTI feeds back and carries out binding analysis in the RSN that E-PUCH in the same UE current TTI is transmitted and the same HARQ process of this UE, judges whether this UE has correctly received the E-HICH of a last TTI base station feedback;

Said statistics submodule is used to count each UE does not correctly receive E-HICH in this time cycle number of times;

Said numerical value conversion submodule is used for correctly not receiving according to each UE in this time cycle the number of times of E-HICH, obtains the false drop rate that each UE receives E-HICH;

The said submodule of choosing is used for choosing the value that satisfies the setting requirement from the false drop rate of each UE reception E-HICH;

Said comparison sub-module is used for selected value and the first adjustment threshold value that is provided with are in advance compared, and obtains comparative result;

Said control submodule is used at said comparative result when being the value chosen more than or equal to the said first adjustment threshold value, with the current transmit power of E-HICH one the first adjustment step-length that raises; Otherwise, the current transmit power of E-HICH is reduced by one first adjustment step-length.

Preferably, said statistical module comprises: analyze submodule and statistics submodule; Said power control module comprises: choose submodule, comparison sub-module and control submodule; Wherein,

Said analysis submodule was used in the time cycle of each setting; The ACK/NACK of a last TTI feeds back and carries out binding analysis in the RSN that E-PUCH in the same UE current TTI is transmitted and the same HARQ process of this UE, judges whether this UE has correctly received the E-HICH of a last TTI base station feedback;

Said statistics submodule is used to count each UE does not correctly receive E-HICH in this time cycle number of times;

The said submodule of choosing is used for choosing to satisfy from the number of times that each UE does not correctly receive E-HICH setting the value that requires;

Said comparison sub-module is used for selected value and the second adjustment threshold value that is provided with are in advance compared, and obtains comparative result;

Said control submodule is used at said comparative result when being the value chosen more than or equal to the said second adjustment threshold value, with the current transmit power of E-HICH one the second adjustment step-length that raises; Otherwise, the current transmit power of E-HICH is reduced by one second adjustment step-length.

Can find out from such scheme; The present invention is through the counter linear domain path loss ratio of releasing its corresponding Serving cell and adjacent sub-district of the SNPL index that reports according to UE, and the pairing linear domain path loss ratio of SNPL index that reports according to the corresponding UE of each user is afterwards confirmed each user's amplitude allocation factor; Then according to the amplitude allocation factor of determined each UE; Accomplish the power division that E-HICH goes up each user, thereby realized that E-HICH goes up each user's power division, making can be according to the difference of user present position; Reach distributing rationally of power, improve the quality of reception of each user E-HICH.

Further; Through in the time cycle of each setting; Add up the quality of reception situation of each UE to E-HICH, each UE that obtains according to statistics then controls the transmitting power of E-HICH the quality of reception situation of E-HICH; Thereby realized power control, reduced the interference that E-HICH brings in the prior art E-HICH.

Description of drawings

Fig. 1 is the structural representation that E-HICH goes up the field feedback that carries in the prior art;

Fig. 2 is the exemplary process diagram of the user power allocation method on the E-HICH in the embodiment of the invention;

Fig. 3 goes up the exemplary block diagram of the base station of user power distribution for the embodiment of the invention realizes E-HICH;

Fig. 4 is the exemplary process diagram of the Poewr control method of E-HICH in the embodiment of the invention;

Fig. 5 is the exemplary block diagram of base station that realizes the power control of E-HICH in the embodiment of the invention;

Fig. 6 a is a kind of structural representation of base station of realizing the power control of E-HICH in the embodiment of the invention;

Fig. 6 b is another structural representation of base station of realizing the power control of E-HICH in the embodiment of the invention.

Embodiment

In the embodiment of the invention, consider that UE when NodeB (base station) sends SI (schedule information) request E-PUCH resource, can report SNPL (Serving cell and adjacent area path loss) index, to be used for NodeB scheduling E-PUCH resource in SI.

Wherein, the computational process of the SNPL index that reports of UE is following:

UE is according to the path loss L of measured Serving cell _ServPath loss L with N adjacent sub-district _n, n=1 ... N calculates the linear domain path loss ratio Φ of Serving cell and adjacent sub-district.Wherein, the different SNPL reporting types of corresponding high-rise configuration, the path loss ratio Φ of Serving cell and adjacent sub-district has different computational methods.For example, the SNPL reporting types 1 of corresponding high-rise configuration, $\mathrm{\Φ}=\frac{1}{\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{L}_{\mathrm{Sev}}/L_n};$ The SNPL reporting types 2 of corresponding high-rise configuration, $\mathrm{\Φ}=\frac{\underset{n=1\·\·\·N}{\mathrm{Min}}\left(L_n\right)}{L_{\mathrm{Sev}}}.$

Convert said linear domain path loss ratio Φ into logarithm domain path loss than Q, Q=10*log is arranged ₁₀(Φ).

According to the Q that obtains, search the mapping relations table of Q as shown in table 1 and SNPL index, obtain the SNPL index that is used to report.In the practical application, the mapping relations table of Q and SNPL index also can be different from shown in the table 1, specifically can decide based on actual conditions, is not limited to the mapping relations table shown in the table 1 herein.

Q＝10*log10(Φ)	SNPL index (index)
		Q<-10	0
-10≤Q<-8	1
		-8≤Q<-6	2
-6≤Q<-5	3
		-5≤Q<-4	4
-4≤Q<-3	5
		-3≤Q<-2	6
-2≤Q<-1	7
		-1≤Q<0	8
0≤Q<1	9
		1≤Q<2	10

2≤Q<3	11
		3≤Q<4	12
4≤Q<5	13
		5≤Q<6	14
6≤Q<7	15
		7≤Q<8	16
8≤Q<9	17
		9≤Q<10	18
10≤Q<11	19
		11≤Q<12	20
12≤Q<13	21
		13≤Q<14	22
14≤Q<15	23
		15≤Q<16	24
16≤Q<17	25
		17≤Q<18	26
18≤Q<20	27
		20≤Q<22	28
22≤Q<24	29
		24≤Q<26	30
26≤Q	31

Table 1

Because SNPL index and Φ have reflected UE situation apart from each base station in the sub-district; The situation that has promptly reflected residing position of UE and path loss to a certain extent, so can confirm on E-HICH the power that distributes for each user based on the SNPL index that UE reports in the embodiment of the invention.For example; Can be according to the anti-linear domain path loss ratio Φ that releases its corresponding Serving cell and adjacent sub-district of the SNPL index that UE reports; Be the estimated value of Φ, the pairing Φ of SNPL index that reports according to the corresponding UE of M user afterwards confirms each user's amplitude allocation factor g _j, j=1 ... M.

For making the object of the invention, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, to further explain of the present invention.

Fig. 2 is the exemplary process diagram of the user power allocation method on the E-HICH in the embodiment of the invention.As shown in Figure 2, this method comprises following flow process:

Step 201 receives the SNPL index SNPL that each UE reports among M the UE _j, j=1 ... M.

Step 202 is according to said SNPL _j, search the mapping relations table of the path loss ratio Q of SNPL index as shown in table 1 and log-domain, obtain corresponding said SNPL _jThe scope of path loss ratio Q of log-domain interval.

Step 203 is chosen the value

that meets the demands according to the value rule of setting from the scope interval of said Q

Wherein, the value rule of setting can be from the scope interval of Q, to choose neighborhood value or other value that obtains according to certain computation rule of mean value or median or certain boundary value or boundary value.

Step 204 is about to the logarithm domain path loss ratio according to

the calculating linear domain path loss ratio of choosing

and converts the corresponding linear domain path loss ratio into.

Wherein, ${\widehat{\mathrm{\Φ}}}_j={10}^{\frac{{\hat{Q}}_j}{10}}.$

Step 205 is according to M UE linear domain path loss ratio

J=1 ... M confirms each user's amplitude allocation factor g _j, j=1 ... M.

In this step, each user's amplitude allocation factor can be according to formula $g_j=\sqrt{\frac{{\mathrm{\Φ}}_j}{\underset{m=1}{\overset{M}{\mathrm{\Σ}}}{\mathrm{\Φ}}_m}}.$

Step 206 is according to the amplitude allocation factor g of determined each UE _j, j=1 ... M accomplishes each user's on E-HICH power division.

In the above-mentioned flow process, between step 204 to the step 205, also can further comprise: respectively to each user's Φ _jCarry out The disposal of gentle filter, utilize The disposal of gentle filter Φ afterwards then _jCarry out above-mentioned processing, promptly carry out step 205 and processing afterwards.Wherein, the concrete grammar that carries out smothing filtering can not limit, for example; Can be X (n)=px (n)+(1-p) X (n-1), wherein x (n) is current instantaneous value, and x (n) is current filtered value; X (n-1) is last filtered value, and p is a filtering factor, be one less than 1 number]

More than the user power allocation method on the E-HICH in the embodiment of the invention is described in detail, below again to realizing in the embodiment of the invention that E-HICH goes up the base station that user power distributes and is described in detail.

Fig. 3 realizes in the embodiment of the invention that E-HICH goes up the exemplary block diagram of the base station of user power distribution.As shown in Figure 3, this base station comprises: receiver module, enquiry module, numerical value are chosen module, modular converter, amplitude factor determination module and power division module.

Wherein, receiver module is used to receive the SNPL index that each UE reports.

Enquiry module is used for the SNPL index that reports according to each UE, and the logarithm domain path loss of inquiry SNPL index and Serving cell and adjacent sub-district is than mapping relations table, and the logarithm domain path loss that obtains corresponding each SNPL index is more interval than scope.

Numerical value is chosen module and is used for from each scope interval, choosing the logarithm domain path loss ratio that meets the demands respectively according to the value rule of setting.

Modular converter is used for converting each logarithm domain path loss ratio of choosing into the corresponding linear domain path loss ratio.

The amplitude factor determination module is used for confirming the amplitude allocation factor of each UE according to each UE linear domain path loss ratio.

The power division module is used for the amplitude allocation factor according to determined each UE, accomplishes the power division that E-HICH goes up each user.

In addition; Can also comprise the The disposal of gentle filter module among this embodiment; Between modular converter and amplitude factor determination module (not shown among Fig. 3); Be used for respectively the linear domain path loss ratio of each UE of modular converter conversion is carried out The disposal of gentle filter, the linear domain path loss ratio after the The disposal of gentle filter is offered the amplitude factor determination module.

In addition; Among the existing HSUPA; Owing to do not introduce the up channel that matches mutually with E-HICH that is used for E-HICH is carried out closed-loop power control, therefore can only carry out open loop power control to E-HICH at present, but still not have a kind of concrete implementation method of E-HICH being carried out open loop power control in the prior art.

For this reason, can be in the embodiment of the invention through each UE among M UE of statistics to the quality of reception situation of E-HICH, and according to each UE the quality of reception situation of E-HICH is controlled the transmitting power of E-HICH.

During concrete the realization, UE can reflect through various parameters the quality of reception situation of E-HICH.For example, to certain user's same HARQ process, if the base station has been fed back the ACK indication through E-HICH to the active user; Represent that then the base station has correctly received the E-PUCH that the last TTI of this user (Transmission Time Interval) sends; Known the ACK indication of correspondence self, then when next time sending E-PUCH if the user has correctly received this E-HICH this moment; Promptly when current TTI was sent E-PUCH, the RSN that transmits among the E-PUCH (retransmission sequence numbering) should be a numbering of restarting; If the user does not correctly receive above-mentioned E-HICH; Then possibly can't know corresponding self the ACK indication or misread and analyse it and indicate for NACK; And think and data are retransmitted; Then when sending E-PUCH next time, promptly when current TTI was sent E-PUCH, the RSN that transmits among the E-PUCH (retransmission sequence numbering) can add up to numbering.Equally, correctly do not receive the E-PUCH that a TTI (Transmission Time Interval) sends on this user in the base station, and through E-HICH when the active user feeds back the NACK indication, also can have similar problem.Therefore can carry out binding analysis through the ACK/NACK feedback of a last TTI in RSN that E-PUCH in the current TTI is transmitted and this HARQ process; Judge whether the RSN that receives equates with the RSN of expection; If equate, confirm that then UE has correctly received E-HICH, if do not wait; Confirm that then UE does not correctly receive E-HICH, thereby can count the quality situation that UE receives E-HICH.

Fig. 4 is the exemplary process diagram of the Poewr control method of E-HICH in the embodiment of the invention.As shown in Figure 4, this flow process comprises the steps:

Step 401; In the time cycle of each setting; The ACK/NACK of a last TTI feeds back and carries out binding analysis in the RSN that E-PUCH in the same UE current TTI is transmitted in the base station and the same HARQ process of this UE; Judge whether this UE has correctly received the E-HICH of a last TTI base station feedback, obtain this user does not correctly receive E-HICH in this time cycle number of times.

Step 402, the number of times according to each user in this time cycle does not correctly receive E-HICH obtains the false drop rate P that each user receives E-HICH _Ej

Wherein, if on E-HICH, carry M user's ACK/NACK indication simultaneously, then total here M user, j=1 ... M.

Step 403 receives the false drop rate P of E-HICH from each user _EjIn find out maximum max (P _Ej).

Step 404 compares this maximum with the first adjustment threshold value T0 that is provided with in advance, if more than or equal to this first adjustment threshold value T0, then execution in step 405; Otherwise, execution in step 406.

Step 405 is with one first adjustment of the current transmit power rising step-length st0 of E-HICH.

Step 406 is with one first adjustment of the current transmit power reduction step-length st0 of E-HICH.

Thereby realized control to the transmitting power of E-HICH.

Wherein, the first adjustment threshold value T0 and the first adjustment step-length st0 can set based on empirical value or certain setting rule.

In the said process; Can omit step 402; And directly from each user does not correctly receive the number of times of E-HICH, choose maximum; And selected maximum compared with the second adjustment threshold value T1 that is provided with in advance, if more than or equal to this second adjustment threshold value T1, then with the current transmit power of E-HICH one the second adjustment step-length st1 that raises; If less than this second adjustment threshold value T1, then the current transmit power with E-HICH reduces by one second adjustment step-length st1, thereby has realized the control to the transmitting power of E-HICH.Wherein, the second adjustment threshold value T1 and the second adjustment step-length st1 can set based on empirical value or certain setting rule.

In addition, can be not in the step 403 from each user receives the false drop rate (or each user does not correctly receive the number of times of E-HICH) of E-HICH, do not choose maximum yet, satisfy other and set the value that requires, like mean value etc. and choose.Specifically can confirm according to actual needs.

More than the Poewr control method of E-HICH in the embodiment of the invention is described in detail, again the base station of the power control that realizes E-HICH in the embodiment of the invention is described in detail below.

Fig. 5 is the exemplary block diagram of base station that realizes the power control of E-HICH in the embodiment of the invention.As shown in Figure 5, this base station comprises: statistical module and power control module.

Wherein, statistical module was used in the time cycle of each setting, added up the quality of reception situation of each UE to E-HICH.

Each UE that power control module is used for obtaining according to said statistical module counts controls the transmitting power of E-HICH the quality of reception situation of E-HICH.

During concrete the realization, statistical module and power control module can have multiple way of realization respectively, and Fig. 6 a and Fig. 6 b show two kinds of concrete ways of realization wherein.

Fig. 6 a is a kind of structural representation of base station of realizing the power control of E-HICH in the embodiment of the invention.Shown in Fig. 6 a, the statistical module in this base station comprises: analyze submodule, statistics submodule and numerical value conversion submodule; Power control module comprises: choose submodule, comparison sub-module and control submodule.

Wherein, Analyzing submodule was used in the time cycle of each setting; The ACK/NACK of a last TTI feeds back and carries out binding analysis in the RSN that E-PUCH in the same UE current TTI is transmitted and the same HARQ process of this UE, judges whether this UE has correctly received the E-HICH of a last TTI base station feedback.

The statistics submodule is used to count each UE does not correctly receive E-HICH in this time cycle number of times.

Numerical value conversion submodule is used for correctly not receiving according to each UE in this time cycle the number of times of E-HICH, obtains the false drop rate that each UE receives E-HICH.

Choosing submodule is used for choosing the value that satisfies the setting requirement from the false drop rate of each UE reception E-HICH.

Comparison sub-module is used for selected value and the first adjustment threshold value that is provided with are in advance compared, and obtains comparative result.

The control submodule is used at said comparative result when being the value chosen more than or equal to the said first adjustment threshold value, with the current transmit power of E-HICH one the first adjustment step-length that raises; Otherwise, the current transmit power of E-HICH is reduced by one first adjustment step-length.

Fig. 6 b is another structural representation of base station of realizing the power control of E-HICH in the embodiment of the invention.Shown in Fig. 6 b, the statistical module in this base station comprises: analyze submodule and statistics submodule; Power control module comprises: choose submodule, comparison sub-module and control submodule.

Wherein, Analyzing submodule was used in the time cycle of each setting; The ACK/NACK of a last TTI feeds back and carries out binding analysis in the RSN that E-PUCH in the same UE current TTI is transmitted and the same HARQ process of this UE, judges whether this UE has correctly received the E-HICH of a last TTI base station feedback.

The statistics submodule is used to count each UE does not correctly receive E-HICH in this time cycle number of times.

Choosing submodule is used for choosing to satisfy from the number of times that each UE does not correctly receive E-HICH setting the value that requires.

Comparison sub-module is used for selected value and the second adjustment threshold value that is provided with are in advance compared, and obtains comparative result.

The control submodule is used at said comparative result when being the value chosen more than or equal to the said second adjustment threshold value, with the current transmit power of E-HICH one the second adjustment step-length that raises; Otherwise, the current transmit power of E-HICH is reduced by one second adjustment step-length.

Above-described specific embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely preferred embodiment of the present invention; Be not to be used to limit protection scope of the present invention; All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (11)

1. the user power allocation method on the E-HICH is characterized in that this method comprises:

Receive the Serving cell and the adjacent area path loss SNPL index of each reported by user equipment UE;

According to said SNPL index, the logarithm domain path loss of inquiry SNPL index and Serving cell and adjacent sub-district is than mapping relations table, and the logarithm domain path loss that obtains corresponding said SNPL index is more interval than scope;

According to the value rule of setting, from said scope interval, choose the logarithm domain path loss ratio that meets the demands;

Convert said logarithm domain path loss ratio into the corresponding linear domain path loss ratio;

According to the linear domain path loss ratio of each UE, confirm the amplitude allocation factor of each UE;

According to the amplitude allocation factor of determined each UE, accomplish the power division that E-HICH goes up each user.

2. the method for claim 1 is characterized in that, and is said according to each UE linear domain path loss ratio, confirms that the amplitude allocation factor of each UE comprises:

According to M UE linear domain path loss ratio

J=1 ... M is according to formula

Confirm the amplitude allocation factor g of each UE _j, j=1 ... M.

3. method as claimed in claim 2; It is characterized in that; Said converting into after the corresponding linear domain path loss ratio according to each UE linear domain path loss ratio, confirmed before the amplitude allocation factor of each UE; Further comprise: respectively each linear domain path loss ratio of each UE is carried out The disposal of gentle filter, obtain the linear domain path loss ratio behind each UE smothing filtering.

4. method as claimed in claim 2 is characterized in that, the value rule of said setting comprises: the neighborhood value of from said scope interval, choosing the boundary value or the setting boundary value of mean value or median or setting.

5. the method for claim 1 is characterized in that, this method further comprises:

In the time cycle of each setting; The ACK/NACK of a last TTI feeds back and carries out binding analysis in the retransmission sequence numbering RSN that the dedicated channel physical uplink channel E-PUCH that strengthens among the same UE current transmission time interval TTI is transmitted and the same HARQ process of this UE; Judge whether this UE has correctly received the E-HICH of a last TTI base station feedback; Obtain this UE does not correctly receive E-HICH in this time cycle number of times; Correctly do not receive the number of times of E-HICH based on each UE in this time cycle, obtain the false drop rate that each UE receives E-HICH;

From the false drop rate of each UE reception E-HICH, choose to satisfy and set the value that requires; And selected value and the first adjustment threshold value that is provided with in advance compared; If, then step-length is adjusted in one first of the current transmit power rising of E-HICH more than or equal to the said first adjustment threshold value; Otherwise, the current transmit power of E-HICH is reduced by one first adjustment step-length.

6. the method for claim 1 is characterized in that, this method further comprises:

In the time cycle of each setting; The ACK/NACK of a last TTI feeds back and carries out binding analysis in the RSN that E-PUCH in the same UE current TTI is transmitted and the same HARQ process of this UE; Judge whether this UE has correctly received the E-HICH of a last TTI base station feedback, obtain this UE does not correctly receive E-HICH in this time cycle number of times;

From each UE does not correctly receive the number of times of E-HICH, choose to satisfy and set the value that requires; And selected value and the second adjustment threshold value that is provided with in advance compared; If, then step-length is adjusted in one second of the current transmit power rising of E-HICH more than or equal to the said second adjustment threshold value; Otherwise, the current transmit power of E-HICH is reduced by one second adjustment step-length.

7. like claim 5 or 6 described methods, it is characterized in that the said value that satisfies the setting requirement of choosing is: choose maximum.

8. realize that E-HICH goes up the base station that user power is distributed, and is characterized in that this base station comprises for one kind:

Receiver module is used to receive the SNPL index that each UE reports;

Enquiry module is used for according to said SNPL index, and the logarithm domain path loss of inquiry SNPL index and Serving cell and adjacent sub-district is than mapping relations table, and the logarithm domain path loss that obtains corresponding said SNPL index is more interval than scope;

Numerical value is chosen module, is used for from said scope interval, choosing the logarithm domain path loss ratio that meets the demands according to the value rule of setting;

Modular converter is used for converting said logarithm domain path loss ratio into the corresponding linear domain path loss ratio;

The amplitude factor determination module is used for confirming the amplitude allocation factor of each UE according to each UE linear domain path loss ratio;

The power division module is used for the amplitude allocation factor according to determined each UE, accomplishes the power division that E-HICH goes up each user.

9. base station as claimed in claim 8; It is characterized in that; This base station further comprises: the The disposal of gentle filter module; Be used for respectively the linear domain path loss ratio of each UE of modular converter conversion is carried out The disposal of gentle filter, the linear domain path loss ratio after the The disposal of gentle filter is offered the amplitude factor determination module.

10. base station as claimed in claim 8 is characterized in that, this base station further comprises:

Statistical module was used in the time cycle of each setting, added up the quality of reception situation of each UE to E-HICH;

Power control module, each UE that is used for obtaining according to said statistical module counts controls the transmitting power of E-HICH the quality of reception situation of E-HICH;

Said statistical module comprises: analyze submodule, statistics submodule and numerical value conversion submodule; Said power control module comprises: choose submodule, comparison sub-module and control submodule; Wherein,

Said analysis submodule was used in the time cycle of each setting; The ACK/NACK of a last TTI feeds back and carries out binding analysis in the RSN that E-PUCH in the same UE current TTI is transmitted and the same HARQ process of this UE, judges whether this UE has correctly received the E-HICH of a last TTI base station feedback;

Said statistics submodule is used to count each UE does not correctly receive E-HICH in this time cycle number of times;

Said numerical value conversion submodule is used for correctly not receiving according to each UE in this time cycle the number of times of E-HICH, obtains the false drop rate that each UE receives E-HICH;

The said submodule of choosing is used for choosing the value that satisfies the setting requirement from the false drop rate of each UE reception E-HICH;

Said comparison sub-module is used for selected value and the first adjustment threshold value that is provided with are in advance compared, and obtains comparative result;

Said control submodule is used at said comparative result when being the value chosen more than or equal to the said first adjustment threshold value, with the current transmit power of E-HICH one the first adjustment step-length that raises; Otherwise, the current transmit power of E-HICH is reduced by one first adjustment step-length.

11. base station as claimed in claim 8 is characterized in that, this base station further comprises:

Statistical module was used in the time cycle of each setting, added up the quality of reception situation of each UE to E-HICH;

Power control module, each UE that is used for obtaining according to said statistical module counts controls the transmitting power of E-HICH the quality of reception situation of E-HICH;

Said statistical module comprises: analyze submodule and statistics submodule; Said power control module comprises: choose submodule, comparison sub-module and control submodule; Wherein,

Said analysis submodule was used in the time cycle of each setting; The ACK/NACK of a last TTI feeds back and carries out binding analysis in the RSN that E-PUCH in the same UE current TTI is transmitted and the same HARQ process of this UE, judges whether this UE has correctly received the E-HICH of a last TTI base station feedback;

Said statistics submodule is used to count each UE does not correctly receive E-HICH in this time cycle number of times;

The said submodule of choosing is used for choosing to satisfy from the number of times that each UE does not correctly receive E-HICH setting the value that requires;

Said comparison sub-module is used for selected value and the second adjustment threshold value that is provided with are in advance compared, and obtains comparative result;

Said control submodule is used at said comparative result when being the value chosen more than or equal to the said second adjustment threshold value, with the current transmit power of E-HICH one the second adjustment step-length that raises; Otherwise, the current transmit power of E-HICH is reduced by one second adjustment step-length.

Images