CN1983847A - Method for adjusting user-terminal up-link power proportioning - Google Patents

Abstract

The invention is concerned with the method for adjusting UE up link power matching proportion, includes the following steps: 1) the wireless network controller RNC indicates some reference transmission format assemblage TFC and the up power off-set to UE by the signaling; 2) the UE confirms the reference TFC corresponding with the target TFC, computes the up power off-set of the object TFC according to the up power off-set of the reference TFC; 3) the UE adjusts the up power matching proportion according to the up power off-set of the object TFC. The invention can improve the precision of the object TFC up power off-set, reduce the error of the the object TFC up power off-set. The invention is also concerned with the project that do not sent the reference TFC information of other TFC, the UE selects the corresponding reference TFC project, in order to reduce the signaling burden of the Uu interface.

Description

A kind of method of adjusting the user-terminal up-link power proportioning

Technical field

The present invention relates to wireless communication technology field, the method for particularly a kind of adjustment user terminal (UE) up-link power proportioning.

Background technology

In Wideband Code Division Multiple Access (WCDMA) (WCDMA) system, ascending power biasing is used for balanced uplink (uplink, UL) Dedicated Physical Control Channel (DPCCH) in the DPCH (DPCH) and the power ratio between the Dedicated Physical Data Channel (DPDCH), and different transformat combination (TFC) has ascending power biasing proportioning separately, and the ascending power biasing is usually to be used for the gain factor β of DPCCH _cWith the gain factor β that is used for DPDCH _dRepresent.In the TS of 3rd Generation Partnership Project (3GPP) 25.213 agreements, stipulate, at any one time β _cAnd β _dQuantized value at least one is 1.0, and β _cAnd β _dBe 4bit.Table 1 has provided β _cAnd β _dValue and corresponding quantitative value.

Table 1 gain factor β _cAnd β

β cAnd β dValue	β cAnd β dQuantized value
		15	1.0
14	14/15
		13	13/15
12	12/15
		11	11/15
10	10/15
		9	9/15
8	8/15
		7	7/15
6	6/15
		5	5/15
4	4/15
		3	3/15
2	2/15
		1	1/15
0	Turn-off

In the TS of 3GPP 25.214 agreements, provided the mode of two kinds of definite ascending power biasings.A kind of is the signaling mode, and promptly radio network controller (RNC) is by the ascending power biasing β of each TFC correspondence of signaling indication UE _cAnd β _d, UE is according to indicated β then _cAnd β _dAdjust the power ratio of up link.

In the signaling mode,, have 2 so if use the transformat combination of 7 bits ⁷=128 kinds of transformats then need 128 * (4+4)=1024 bits to indicate the β of each transformat to UE altogether _cAnd β _d, brought comparatively serious signaling traffic load for over-the-air message (Uu) interface.

The another kind of mode of determining that ascending power is setovered is an account form, and promptly RNC provides the ascending power biasing β with reference to TFC _cAnd β _d, the ascending power biasing that UE setovers and calculates other TFC according to the ascending power of reference TFC, UE is according to resulting β then _cAnd β _dAdjust up-link power proportioning.

The computational methods of account form are as follows:

At first according to formula (1) calculating parameter A _jValue.

$A_j=\frac{{\mathrm{\β}}_{d,\mathrm{ref}}}{{\mathrm{\β}}_{c,\mathrm{ref}}}\·\sqrt{\frac{L_{\mathrm{ref}}}{L_j}}\sqrt{\frac{K_j}{K_{\mathrm{ref}}}}---\left(1\right)$

Wherein, $A_j=\frac{{\mathrm{\β}}_{d,j}}{{\mathrm{\β}}_{c,j}},$ β _{C, j}And β _{D, j}Be respectively the DPCCH of j kind TFC and the gain factor of DPDCH, β _{C, ref}And β _{D, ref}Be respectively with reference to the DPCCH of TFC and the gain factor of DPDCH, L _RefFor being used for the number with reference to the DPDCH of TFC, L _jNumber for the DPDCH that is used for j kind TFC.In the formula (1) $K_{\mathrm{ref}}=\underset{i}{\mathrm{\Σ}}{\mathrm{RM}}_i\·N_i,$ RM wherein _iBe the semi-static rate matching attribute of transmission channel i among the reference TFC, N _iBe the bit number of transmission channel i from the output of radio frames explant, summation is the summation to all transmission channel i among the reference TFC.Similarly, $K_j=\underset{i}{\mathrm{\Σ}}{\mathrm{RM}}_i\·N_i,$ Wherein

RM _iBe the semi-static rate matching attribute of transmission channel i among the j kind TFC, N _iBe the bit number of transmission channel i from the output of radio frames explant, summation is the summation to all transmission channel i among the j kind TFC.

Then, according to A _jValue determine β _cAnd β _dIf A _j＞1, β so _{D, j}Quantized value get 1.0, β _{C, j}Get the β that satisfies condition _{C, j}≤ 1/A _jMaximum quantized value.In addition, because β _{C, j}Can not be zero, so when obtaining β according to said method _{C, j}When equalling zero, β _{C, j}Get minimum quantization value 1/15.For example, work as A _j=4 o'clock, β _{D, j}Quantized value get 1.0, by satisfying β _{C, j}≤ 1/4 (is β _{C, j}≤ 3.75/15) maximum quantized value obtains β _{C, j}Quantized value get 3/15, obtain β according to table 1 again _{C, j}=3, β _{D, j}=15.Again for example, work as A _j=30 o'clock, β _{D, j}Quantized value get 1.0, by satisfying β _{C, j}≤ 1/30 (is β _{C, j}≤ 0.5/15) maximum quantized value can obtain β so _{C, j}Be 0, and because β _{C, j}Can not be for zero, so get β _{C, j}Quantized value equal 1/15, obtain β according to table 1 again _{C, j}=1, β _{D, j}=15.

If A _j≤ 1, β so _{D, j}Get the β that satisfies condition _{D, j}〉=A _jThe minimum quantization value, and β _{C, j}Quantized value get 1.0.For example, work as A _j=1/5 o'clock, β _{C, j}Quantized value get 1.0, according to satisfying β _{D, j}〉=1/5 (is β _{D, j}〉=3/15) minimum quantization value obtains β _{D, j}Quantized value get 3/15, obtain β according to table 1 again _{C, j}=15, β _{D, j}=3.

The related cells of table 2 account form

Cell/group name claims	Whether need	Type and reference
			Select gain factor	Essential (MP)
The gain factor of indication
			＞＞gain factor β c	MP	Integer (0..15)
＞＞gain factor β d	MP	Integer (0..15)
			＞＞with reference to TFC ID	Optional (OP)	Integer (0..3)
The gain factor of＞calculating
			＞＞with reference to TFC ID	MP	Integer (0..3)

Table 2 has provided account form RNC and has sent the cell of signaling to UE, and the gain factor that generally comprises indication at least is promptly with reference to gain factor (integer, the β of TFC _cAnd β _dBe respectively 4bit), with reference to TFC sign (TFC ID, TFCI) (integer, 2bit) and the used reference TFCI of the gain factor that calculates (integer, 2bit).It still is that signaling method provides gain factor that selection gain factor in the table 2 represents to adopt account form, is equivalent to a selector switch.

In account form,, have 2 so if use the calculating TFC (CTFC) of 7 bits ⁷=128 kinds of transformats then need 127 * 2+10=264 bit to indicate the β of each transformat to UE altogether _cAnd β _d, increased the load of signaling greatly.

When adopting account form to calculate the ascending power biasing of target TFC, a precondition is arranged: when application reference TFC respectively and the target TFC that calculated, the required energy of information bit of demodulation is identical.If during application target TFC when required energy of information bit of demodulation and application reference TFC required energy differ greatly the β of the target TFC that then calculates _cAnd β _dError will be bigger.In above-mentioned existing account form because RNC only indicates one with reference to TFC, except with this with reference to the approaching minority TFC of TFC, other most of TFC and this difference with reference to TFC are bigger, cause the β of most of target TFC of calculating _cAnd β _dError will be bigger, thereby cause the adjustment result of up-link power proportioning not conform to the requirement of expection.

Summary of the invention

In view of this, the present invention proposes a kind of method of the UE of adjustment up-link power proportioning, calculate the precision of the ascending power biasing of target TFC in order to raising, thereby make the adjustment result of up-link power proportioning meet the requirement of expection.Further aim of the present invention is to reduce the signaling traffic load that RNC sends to UE.

For achieving the above object, the invention provides a kind of method of the UE of adjustment ascending power proportioning, this method may further comprise the steps:

A.RNC is a plurality of with reference to TFC and ascending power biasing thereof to the UE indication by signaling;

B.UE determines and target TFC corresponding reference TFC, and setovers according to the ascending power that target TFC is calculated in this ascending power biasing with reference to TFC;

C.UE adjusts the ascending power proportioning of up link according to the ascending power biasing of target TFC.

A plurality of described in the steps A with reference to even the distribution or non-uniform Distribution in TFCI interval of TFC according to correspondence.

Further comprise among the step B: when target TFC be described a plurality of with reference to TFC one of them the time, UE directly obtains the ascending power biasing of target TFC according to the indication of RNC.

Steps A further comprises: RNC indicates and target TFC corresponding reference TFC to UE by signaling; UE determines and target TFC corresponding reference TFC according to the indication of RNC among the step B.

Further comprise before the steps A: RNC determines and target TFC corresponding reference TFC according to predetermined rule.

In technique scheme, signaling comprises at least described in the steps A: represent described a plurality of cell with reference to TFC, the cell of the described a plurality of ascending power biasings with reference to TFC of expression, the cell of expression target TFC and the cell of expression and target TFC corresponding reference TFC.

UE determines and target TFC corresponding reference TFC according to predetermined rule in step B.

Signaling comprises at least described in the steps A: represent described a plurality of with reference to TFC cell and the cell of the described a plurality of ascending power biasings with reference to TFC of expression.

Preferably, described predetermined rule is: with described a plurality of with reference among the TFC with the reference TFC of the immediate TFC of target TFC as target TFC; Or with described a plurality of with reference to TFCI among the TFC greater than the TFCI of target TFC and minimum TFC reference TFC as target TFC.

Described ascending power biasing comprises the gain factor β that is used for DPCCH _cWith the gain factor β that is used for DPDCH _d

From such scheme as can be seen, the present invention adopts the signaling mode to indicate many ascending power biasings with reference to TFC of UE, for other TFC, UE calculates the biasing of its ascending power according to a plurality of with reference to setovering with the ascending power of its corresponding reference TFC among the TFC, compare with existing account form, because the present invention utilizes a plurality of with reference to corresponding among a TFC ascending power biasing of calculating target TFC, make and differ less for target TFC with reference to required energy of information bit of TFC demodulation, thereby improve the precision of the ascending power biasing of calculating target TFC, reduce the ascending power biased error of calculating target TFC, made the adjustment result of up-link power proportioning meet the requirement of expection.Compare with existing signaling mode, the present invention does not need to send the ascending power biasing of all TFC, thereby has reduced the signaling traffic load of Uu interface.On this basis, the present invention also provides and has not sent the scheme of being selected corresponding reference TFC with reference to the reference TFC information of other TFC outside the TFC by UE, has reduced the signaling traffic load of Uu interface further.

Description of drawings

Fig. 1 is the schematic flow sheet of first embodiment of the invention.

Fig. 2 is the schematic flow sheet of second embodiment of the invention.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in more detail by the following examples.

With reference to figure 1, the first embodiment of the present invention may further comprise the steps:

Step 101, RNC is a plurality of with reference to TFC and ascending power biasing β thereof to the UE indication by signaling _cAnd β _dAnd for other TFC beyond the reference TFC, RNC indicates each TFC corresponding reference TFC by signaling to UE.

With the Packet Service in the table 3 (PS) territory 384k (PS384k) is that example illustrates, PS384k can transmit 12 * 336 bits/block in 10 milliseconds Transmission Time Interval (TTI).In PS384k, have 13 kinds of TFC, the influence of block length is bigger because coding gain is subjected to encoding, 12 * 336 to 9 * 336 Turbo code coding gain is more approaching, 8 * 336 to 4 * 336 Turbo code coding gain is more approaching, 4 * 336 to 0 * 336 Turbo code coding gain is more approaching, so 1 ascending power biasing with reference to TFC is set respectively in described in the above 3 intervals.That is, described a plurality of can be equally distributed at interval with reference to TFC according to the TFCI of correspondence, can certainly right and wrong equally distributed.Referring to table 3, RNC indication TFCI is that 0,4,8,12 TFC is as reference TFC, and the ascending power of other TFC biasing calculates according to the ascending power biasing with reference to TFC accordingly respectively, and for example: TFCI is that the TFCI of 1,2,3 TFC corresponding reference TFC is 4; TFCI is that the TFCI of 5,6,7 TFC corresponding reference TFC is 8; TFCI is that the TFCI of 9,10,11 TFC corresponding reference TFC is 12.

RNC before sending signaling, can be further according to default mapping ruler from a plurality of with reference to determine the TFC with reference to other TFC corresponding reference TFC beyond the TFC.Default mapping ruler can be determine TFCI and target TFC the immediate TFC of TFCI as it with reference to TFC, if immediate have two, for example two of TFCI-4 and TFCI-8 are arranged with reference to TFC with TFCI-6 is immediate in table 3, can determine any one the reference TFC as TFC-6 among both this moment; Also can be the rule shown in the table 3: for TFCI be the target TFC of i, determine a plurality of with reference to TFCI among the TFC greater than i and minimum TFC reference TFC as target TFC.Equally referring to table 3, be example with the reference TFC that determines TFCI-3, have 0,4,8,12 with reference to the TFCI of TFC correspondence, be 4 wherein greater than 3 minimum value, the TFC that then selects TFCI-4 is the reference TFC of the TFC ascending power biasing of calculating TFCI-3.

Table 3 is how individual with reference to the TFCI ios dhcp sample configuration IOS DHCP

TFCI(i)	Transformat	The coding block length	β cβ dObtain manner
				0	0 *336	0	(Signalled) of indication
1	1 *336	0	With TFCI-4 is reference calculation
				2	2 *336	352	With TFCI-4 is reference calculation
3	3 *336	704	With TFCI-4 is reference calculation
				4	4 *336	1056	Signalled
5	5 *336	1408	With TFCI-8 is reference calculation
				6	6 *336	1760	With TFCI-8 is reference calculation
7	7 *336	2464	With TFCI-8 is reference calculation
				8	8 *336	2816	Signalled
9	9 *336	3168	With TFCI-12 is reference calculation
				10	10 *336	3520	With TFCI-12 is reference calculation
11	11 *336	3872	With TFCI-12 is reference calculation
				12	12 *337	4224	Signalled

Because in this step, RNC not only notifies TFCI-0, TFCI-4, TFCI-8 and TFCI-12 etc. with reference to TFC and ascending power biasing β thereof to UE _cAnd β _d, but also other TFC corresponding reference TFC beyond the notification reference TFC.The signaling that RNC sent in this step comprises following cell at least so: represent that the cell, expression of described a plurality of cell with reference to TFC, the described a plurality of ascending power biasings with reference to TFC of expression are with reference to the cell of the TFC beyond the TFC, expression and cell with reference to TFC TFC corresponding reference TFC in addition.Wherein each TFC can represent with the TFCI of correspondence.

Step 102, if UE will with target TFC be a plurality of of RNC indication with reference to one of TFC, then UE directly obtains the ascending power biasing of target TFC according to the indication of RNC.If UE will with target TFC be not the reference TFC of RNC indication, UE is according to the ascending power biasing that calculates target TFC accordingly with reference to the ascending power biasing of TFC so.The computational methods that adopted are identical with computational methods of the prior art, repeat no more here.

Step 103, UE is according to the ascending power biasing β of resulting target TFC _cAnd β _dAdjust up-link power proportioning.The biasing of resulting ascending power is the RNC indication, or UE calculates according to the ascending power biasing of reference TFC and obtains.

In first embodiment, RNC has indicated with reference to other TFC corresponding reference TFC beyond the TFC to UE.In order further to reduce signaling traffic load, in the second embodiment of the present invention, RNC need not indicate with reference to other TFC corresponding reference TFC beyond the TFC to UE, and is selected to determine to calculate then with reference to TFC accordingly by UE.

With reference to Fig. 2, the second embodiment of the present invention may further comprise the steps:

Step 201, RNC is a plurality of with reference to TFC and each ascending power biasing β with reference to TFC to the UE indication by signaling _cAnd β _dWherein can represent with reference to TFC with the TFCI of correspondence.Preferably, described a plurality of can be equally distributed at interval with reference to TFC according to the TFCI of correspondence, or non-uniform Distribution.

Because second embodiment does not need to UE indication with reference to other TFC corresponding reference TFC beyond the TFC, so signaling described in the step 201 only need comprise at least: the cell of representing the described a plurality of ascending power biasings with reference to TFC of described a plurality of cell, expression with reference to TFC.Like this, further reduced the signaling traffic load of Uu interface.

Step 202, if UE will with target TFC be a plurality of of RNC indication with reference to one of TFC, then UE directly obtains the ascending power biasing of target TFC according to the indication of RNC.If UE will with target TFC be not one of reference TFC of RNC indication, UE is a plurality of with reference to selection corresponding reference TFC the TFC from what RNC sent according to default mapping ruler so, and calculates the ascending power biasing of target TFC according to this ascending power biasing with reference to TFC.The computational methods that adopted are identical with computational methods of the prior art, repeat no more here.

Default mapping ruler described here can be determine the TFCI of TFCI and target TFC immediate with reference to TFC as corresponding reference TFC, if immediate have two, for example two of TFCI-4 and TFCI-8 are arranged with reference to TFC with TFCI-6 is immediate in table 3, can determine any one the reference TFC as TFC-6 among both this moment; Also can be the rule shown in the table 3: for TFCI be the target TFC of i, determine a plurality of with reference to TFCI among the TFC greater than i and minimum TFC as reference TFC.Referring to table 3, be example with the reference TFC that determines TFCI-6, the reference TFCI of RNC indication has 0,4,8,12, is 8 greater than 6 minimum value wherein, and then the UE TFC that selects TFCI-8 is the reference TFC of the TFC that calculates TFCI-6.

Step 203, UE adjusts up-link power proportioning according to the ascending power biasing of resulting target TFC.The biasing of resulting ascending power is the RNC indication, or UE calculates according to the ascending power biasing of reference TFC and obtains.

The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1, a kind of method of adjusting user terminal UE ascending power proportioning is characterized in that this method may further comprise the steps:

A. radio network controller (RNC) is indicated a plurality of reference transmission format combination TFC and ascending power biasing thereof by signaling to UE;

B.UE determines and target TFC corresponding reference TFC, and setovers according to the ascending power that target TFC is calculated in this ascending power biasing with reference to TFC;

C.UE adjusts the ascending power proportioning of up link according to the ascending power biasing of target TFC.

2, method according to claim 1 is characterized in that, and is a plurality of with reference to transformat combination sign TFCI at interval even distribute or non-uniform Distribution of TFC according to correspondence described in the steps A.

3, method according to claim 1 is characterized in that, further comprises among the step B: when target TFC be described a plurality of with reference to TFC one of them the time, UE directly obtains the ascending power biasing of target TFC according to the indication of RNC.

4, method according to claim 1 is characterized in that, steps A further comprises: RNC indicates and target TFC corresponding reference TFC to UE by signaling;

UE determines and target TFC corresponding reference TFC according to the indication of RNC among the step B.

5, method according to claim 4 is characterized in that, further comprises before the steps A:

RNC determines and target TFC corresponding reference TFC according to predetermined rule.

6, method according to claim 4, it is characterized in that signaling comprises at least described in the steps A: represent described a plurality of cell, the cell of the described a plurality of ascending power biasings with reference to TFC of expression, the cell of expression target TFC and the cell of expression and target TFC corresponding reference TFC with reference to TFC.

7, method according to claim 1 is characterized in that, UE determines and target TFC corresponding reference TFC according to predetermined rule in step B.

8, method according to claim 7 is characterized in that, signaling comprises at least described in the steps A: represent described a plurality of with reference to TFC cell and the cell of the described a plurality of ascending power biasings with reference to TFC of expression.

According to claim 5 or 7 described methods, it is characterized in that 9, described predetermined rule is:

With described a plurality of with reference among the TFC with the reference TFC of the immediate TFC of target TFC as target TFC; Or with described a plurality of with reference to TFCI among the TFC greater than the TFCI of target TFC and minimum TFC reference TFC as target TFC.

10, method according to claim 1 is characterized in that, described ascending power biasing comprises the gain factor β that is used for special used for physical control channel DPCCH _cWith the gain factor β that is used for Dedicated Physical Data Channel DPDCH _d

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