CN102651889A - Method, equipment and system for determining resource indexes - Google Patents

Abstract

The invention relates to a method, equipment and a system for determining resource indexes in a wireless system. According to the method, the equipment and the system, at least two control channel elements (CCEs) are researched and implemented for user equipment (UE) and the CCEs are mapped to at least two resource indexes of the UE according to predefined mapping rules. According to embodiments of the invention, a plurality of resource indexes can be implicitly determined into the UE.

Description

Confirm method, equipment and the system of resource index

Technical field

The present invention is relevant with wireless communication field, and is especially, relevant with the method, equipment and the system that are used for definite resource index.

Background technology

Known, for coherence's demodulation of a plurality of users' in the up link of launching communication system affirmation (ACK/NACK) signal, for each subscriber equipment (UE) has all distributed a demodulated reference signal (DRS).DRS obtains from the set of DRS quadrature.

And in down link, broadcast channel is used to launch the control information from the UE of base station.Information in this broadcast channel is made up of a plurality of information segments, promptly uses control channel element (CCE) expression.Each UE has distributed one or more continuous CCE and has received its dedicated control information, representes the physical downlink control channel (PDCCH) in its CCE fragment of having distributed.The quantity of the CCE that is distributed of each PDCCH is 1,2,4 or 8.

PDCCH comprises relevant communicating downlink dynamic data (being physical down link sharing channel (PDSCH)), perhaps the transmission location of up link dynamic data (being physical uplink link sharing channel (PUSCH)) and the information of form.UE at first finds and reads PDCCH, receives PDSCH then and decodes its message.Later, UE will send an ACK/NACK to respond the message that has received in the up link to the base station.

Will be used for the resource index (DRS index or ACK/NACK index) of this ACK/NACK message for fear of dominance scheduling, with PDCCH position implicit representation from the information that comprised the relevant PDCCH that decoded.Or rather, the position of first CCE (index) confirmed to be used for the resource index that ul ack/NACK transmits with unique among the PDCCH.

Summary of the invention

Use prior art to distribute a resource index, but in some cases, UE need the more resources index to come transfer uplink data to UE.This problem is exactly how to confirm a plurality of resource indexs for UE implicit expression.

Another problem is: if the quantity of the available resources index in each Resource Block (RB) is identical, how to be definite at least two resource indexs of UE.

Another problem is: if the quantity of the available resources index in first Resource Block (RB) is less than the quantity of the available resources index among other RB, how to be definite at least two resource indexs of UE.

Another problem is: if the available resources index quantity in each Resource Block (RB) is different, how to be definite at least two resource indexs of UE.

Another problem is: if the quantity of the resource index of UE surpasses the quantity of the available resource index among the RB, will how to operate.

Another problem is: how with a plurality of logical antennas of fixed DRS index assignment to UE.

Another problem is: how with the logical antenna of at least two fixed ACK/NACK index assignment to UE.

For one or more problems of pointing out above solving, from the angle in foregoing invention field, the present invention has lectured:

One embodiment of the present of invention provide the method for the resource index in a kind of definite wireless communication system, and it comprises:

For at least two CCE of a UE,, CCE is mapped at least two resource indexs of UE according to predetermined mapping ruler.

In order further to develop, this method also is included as UE and sets up at least two CCE.

In addition, according to predetermined mapping ruler, CCE is mapped at least two resources of UE, it comprises:

Confirm at least two resources of UE, wherein each resource index is confirmed according to following formula:

mod(s+m，K)+a

Wherein, s is first CCE index of UE, and m is a side-play amount, m >=0 wherein, K is the quantity of the available resources index in the Resource Block (RB), a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE.

In addition, according to predetermined mapping ruler, CCE is mapped at least two resources of UE, it comprises:

Confirm at least two resource indexs of UE, wherein each resource index is confirmed according to following formula:

$\left\{\begin{array}{ccc}s+m+a& \mathrm{if}& s+m<K^{\mathrm{re}}\\ \mathrm{mod}(s+m-K^{\mathrm{re}},K)+a& \mathrm{if}& s+m\&GreaterEqual;K^{\mathrm{re}}\end{array}\right.$

Wherein, s is the quantity of first CCE index of UE, and m is a side-play amount, m>=0 wherein, a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE, K ^ReBe the quantity of the available resources index among first RB, K is the quantity of second available resources index among the RB.

In addition, according to predetermined mapping ruler, at least two resources with CCE maps to UE comprise:

Confirm at least two resource indexs of UE, wherein each resource index is confirmed according to following formula:

$s+m-\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m+a,$ Wherein, $\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m<s+m\&le;\underset{m=0}{\overset{n}{\mathrm{\&Sigma;}}}{K}^m$

Wherein, s is the quantity of first CCE index of UE, and m is a side-play amount, wherein, and m>=0, and K ^mBe RB _mIn the quantity of available resources index, wherein m=0,1 ... M-1, wherein, M is the quantity of the available RB of resource index, a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE, n is the RB index of UE.

In order further to develop, at least one fixed resource index quantity of response UE surpasses the situation of the quantity of the available resources index among the Resource Block RB, and this method also comprises:

Delete at least one fixed resource index; Perhaps

Again arrange the position of the CCE that will receive by UE, be arranged in a RB with the resource index of guaranteeing UE.

In addition, resource index is DRS index or ACK/NACK index.

In order further to develop, UE has a plurality of logical antennas, and this method also comprises: through UE, for each logical antenna distributes a fixed DRS index.

This method also comprises:

Be that a logical antenna distributes at least two fixed ACK/NACK index.

In addition, this method also comprises:

Be that a logical antenna distributes at least one fixed ACK/NACK index.

One embodiment of the present of invention provide the method for the resource index in a kind of definite wireless communication system, comprising:

A map unit is configured to according to predetermined mapping ruler, and at least two resource indexs of a UE are sent to UE.

This equipment also comprises:

One is provided with the unit, and being configured to is that a UE is provided with at least two CCE.

This map unit also comprises:

First confirms the unit, is configured to confirm at least two resource indexs of UE, and wherein each resource index is confirmed according to following formula:

mod(s+m，K)+a

Wherein, s is first CCE index of UE, and m is a side-play amount, m >=0 wherein, K is the quantity of the available resources index in the Resource Block (RB), a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE.

This map unit also comprises:

Second confirms the unit, is configured to confirm at least two resource indexs of UE, and wherein each resource index is confirmed according to following formula:

$\left\{\begin{array}{ccc}s+m+a& \mathrm{if}& s+m<K^{\mathrm{re}}\\ \mathrm{mod}(s+m-K^{\mathrm{re}},K)+a& \mathrm{if}& s+m\&GreaterEqual;K^{\mathrm{re}}\end{array}\right.$

Wherein, s is the quantity of first CCE index of UE, and m is a side-play amount, m>=0 wherein, a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE, K ^ReBe the quantity of the available resources index among first RB, K is the quantity of second available resources index among the RB.

This map unit also comprises:

The 3rd confirms the unit, is configured to confirm at least two resource indexs of UE, and wherein each resource index is confirmed according to following formula:

$s+m-\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m+a,$ Wherein, $\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m<s+m\&le;\underset{m=0}{\overset{n}{\mathrm{\&Sigma;}}}{K}^m$

Wherein, s is the quantity of first CCE index of UE, and m is a side-play amount, wherein, and m>=0, and K ^mBe RB _mIn the quantity of available resources index, wherein m=0,1 ... M-1, wherein, M is the quantity of the available RB of resource index, a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE, n is the RB index of UE.

In order further to develop, the fixed resource index quantity that responds at least one UE surpasses the situation of the quantity of the available resources index among the RB, and this equipment also comprises:

A delete cells is configured to delete at least one fixed resource index; And/or

Again an arrangement units is configured to again the position of those CCE that will be received by UE, is arranged in a RB with the resource index of guaranteeing UE.

In addition, resource index is DRS index or ACK/NACK index.

In addition, if UE has a plurality of logical antennas, this equipment also comprises:

First allocation units are configured to all distribute a fixed DRS index to each logical antenna.

This equipment also comprises:

Second logical block is configured to distribute at least two fixed ACK/NACK index to each logical antenna.

This equipment also comprises:

The 3rd allocation units are configured to distribute at least one fixed ACK/NACK index into each logical antenna.

One embodiment of the present of invention provide the system of the resource index in a kind of definite wireless communication system, and it comprises:

A base station is configured to communicate with a UE; Wherein

According to the mapping ruler that has disposed, this base station configuration is for to distribute to UE with at least two CCE; CCE is mapped at least two resource indexs of UE, and CCE is sent to UE; And

According to predefined mapping ruler, UE is configured to the reception CCE from the base station, and CCE is mapped at least two resource indexs of UE.

One embodiment of the present of invention provide a computer program, have comprised computer program code, when carrying out this code, make computer can carry out the step in the said method.

In addition, computer program code makes computer can carry out the step of the subscriber equipment in the said method when carrying out.

In addition, computer program code makes computer can carry out the step of the base station in the said method when carrying out.

One embodiment of the present of invention provide a computer-readable medium, and wherein, aforementioned calculation machine program code is carried by computer-readable medium.

Advantage according to method, equipment and the system of some embodiments of the present invention is that it can give resource index through CCE being mapped at least two of UE according to predetermined mapping ruler, confirms a plurality of resource indexs to UE implicit expression.

Another advantage is according to an embodiment of the invention: if the quantity of the available resources index in each Resource Block (RB) is identical, it can confirm at least two resource indexs for UE.

Another advantage according to an embodiment of the invention is: if the quantity of the available resources index in first Resource Block (RB) is less than the quantity of the available resources index among other RB, can confirm at least two resource indexs for UE.

Another advantage according to an embodiment of the invention is: if the quantity of the available resources index in each Resource Block (RB) is different, it can confirm at least two resource indexs for UE.

Another advantage according to an embodiment of the invention is: it can avoid the quantity of some unavailable resource indexs of UE to surpass the quantity of the available resources index in each Resource Block (RB).

Another advantage according to an embodiment of the invention is: after distributing a DRS index for each logical antenna, the UE with a plurality of logical antennas can pass through different logical antenna transmission data.Can pass through the uplink performance that transmit diversity (particularly when it is cell edge UE) improves UE like this.

Another advantage according to an embodiment of the invention is that after having distributed at least two ACK/NACK index for each logical antenna, UE can be through logical antenna based on code or spatial reuse transfer uplink data.Can increase the uplink information transmissions capacity through generation or spatial multiplexing like this.

Description of drawings

With reference to accompanying drawing, specified below according to certain methods of the present invention, equipment and system, wherein:

Fig. 1 is the sketch map and the simple declaration of the multiplexing structure of DRS and an ACK/NACK among the RB;

Fig. 2 is the structure chart of one embodiment of the present of invention;

Fig. 3 is the flow chart of the CCE structure of an example;

Fig. 4 is the flow chart of another CCE structure of an example;

Fig. 5 is the structure chart of one embodiment of the present of invention;

Fig. 6 is the flow chart of the CCE structure of an example;

Fig. 7 is the structure chart of one embodiment of the present of invention;

Fig. 8 is the structure chart of the equipment of one embodiment of the present of invention;

Fig. 9 is the structure chart of the system of one embodiment of the present of invention;

Figure 10 is the structure chart of the UE of one embodiment of the present of invention;

Figure 11 is the structure chart of the base station of one embodiment of the present of invention;

Figure 12 is according to a specific embodiment of the present invention, CCE is mapped to the flow chart of PDCCH;

Figure 13 is for mapping to CCE the flow chart of another specific embodiment of the present invention of PDCCH;

Figure 14 maps to CCE the flow chart of the specific embodiment of the present invention of PDCCH for being used for before rearranging;

Figure 15 maps to CCE in the structure chart of the specific embodiment of the present invention of PDCCH for after rearranging; And

Figure 16 is a schematic diagram and a simple declaration of carrying the CD of computer program code according to the present invention.

Embodiment

In order to understand the present invention better, at first describe UE and how can use following data structure to come transmission of uplink information.

As UE during to the base station uplink control information, uplink control information will be confined to a RB that can comprise 12 number of sub-carrier and 6 or 7 signals (depending on Cyclic Prefix (CP) size).Do not losing under the general situation, we will suppose that each RB has 7 symbols in following explanation.Uplink control information can be physical uplink control channel (PUCCH).For example, the affirmation (ACK/NACK) of response downlink packet emission is sent on PUCCH.

At the RB that is used for the downlink information emission, three symbols are used for the DRS emission, and all the other four symbols are used for uplink information transmissions.Up-link information possibly be ACK/NACK or dispatch request.Do not losing under the general situation, present embodiment ACK/NACK describes the RB structure as an example.DRS and the multiplexing structure of ACK/NACK among the RB have been described among Fig. 1.

In each time slot of emission ACK/NACK, UE will use one from a DRS in the available DRS set, so that allow to use the coherent detection of the information in the base station on PUCCH.

Length is that 12 sequence is used at each symbol emission ACK/NACK or DRS.Be under the situation of 12 basic sequence at given length, generation had the set of 12 sequences.These are to multiply each other through the linear phase with slope 2 π α/12 to obtain as follows:

r ^α(n)＝e ^j2πnα/12r(n)，n＝0，1，…，11；α＝0，1，…，11 (1)

Wherein, r (n) is 12 basic sequence for length, r ^α(n) basic sequence for having revised.Linear phase shift in the formula (1) operates in the frequency domain to be carried out, and the linear phase shift in the frequency domain is corresponding to the cyclic shift in the time-domain.Therefore, 12 frequency domain sequences in the formula (1) are corresponding to 12 of basic sequence in the time-domain different cyclic shifts.These 12 sequences quadrature in time-domain, reason are the specific selections of having carried out these linear phase shift slope 2 π α/12.

If each UE uses a cyclic shift to be DRS (or phase slope 2 π α/12 of equal value), and different UE distributes DRS through cyclic shift, if this expression passes DRS with a symbol, then each RB at most can multiplexing 12 UE.But, in the ACK/NACK structure, have three symbols to can be used for DRS.In order further to improve the multiplexing capacity of UE, in time domain, used the sign indicating number spread spectrum, employed sequence is that three length are 3 orthogonal sequence (OS).The orthogonal sequence of these three DRS (OS) shows in table 1.

Table 1

The OS sequence index	OS?[w(0)w(1)w(2)]
		0	[1?1?1]
1	[1?e j2π/3?e j4π/3]
		2	[1?e j4π/3?e j2π/3]

According to top structure, can find out, can be supported in the K=12*3=36DRS of quadrature in the temporal frequency domain at most.If all distributed a DRS, then can in a RB, support 36 UE at most for each UE.

36 DRS are numbered k=0, and 1 ... 35.The index of DRS is relevant with cyclic shift and OS.For example, the relation between DRS index and cyclic shift and the OS is as shown in table 2.

Table 2

In addition, Δ _ShiftIt is poor to be defined as two cyclic shifts between the adjacent DRS that uses same OS, and under the situation of the multidiameter expansion of considering given cell deployment, the cyclic shift difference can not be 1.In an embodiment, used Δ _ShiftThree chosen candidate values 1,2,3}, it is configured through higher level signaling by the base station.For example, if Δ _Shift=2, then have only 18 available DRS.

If the CCE index greater than the quantity K of DRS available among the RB, then will distribute second RB to be used for PUCCH transmission, and DRS distributes and will proceed, but this moment, and this second RB used in this PUCCH emission.Be merely the explanation of a DRS resource among the RB above, and possibly have a plurality of RB and distribute to PUCCH.These RB that are used for PUCCH will have with a kind of DRS resource.Therefore, in this case, if UE will be to the base station up-link information, it must known corresponding RB index, and for example: which RB is used to launch the up-link information, DRS index of UE and by the ACK/NACK index of base station implicit assignment.After obtaining the DRS index, can obtain corresponding cyclic shift and OS according to table 2.

When transmission of uplink information,, independent and independently of one another but the process of confirming RB index, DRS index and ACK/NACK index remains even UE must obtain RB index, DRS index and ACK/NACK index.

At this moment, will describe one embodiment of the present of invention, and with reference to figure 2, it has shown a kind of method of in wireless communication system, confirming resource index.This method can be carried out through UE or base station.

At least two CCE can be set up for each UE in piece 201, UE or base station.

When UE carried out the method, piece 101 was:

UE receives at least two CCE from its downlink control channel.

When the method was carried out in the base station, piece 101 was:

UE is distributed to at least two CCE in the base station.

Piece 202 according to predetermined rule, maps to CCE at least two resource indexs of UE.

Particularly, piece 202 possibly comprise scenario.

If A. the quantity of the available resources index among each RB is identical, then for this UE confirms at least two resource indexs, each resource index is confirmed according to following formula (2).

mod(s+m，K)+a

(2)

In addition, UE or base station can also be confirmed the RB index of UE according to following formula (3).

Wherein, s is first CCE index of UE, and m is a side-play amount, m >=0 wherein, K is the quantity of the available resources index in the Resource Block (RB), a be 0 and N-1 between value (can corresponding to a CCE among this UE), wherein N is the quantity of the CCE of UE.How to confirm that a realizes through the predefined rule between base station and the UE.

According to following formula, the K value is with the step size Δ _ShiftChange with the CP size:

$K=\frac{12*c}{{\mathrm{\&Delta;}}_{\mathrm{shift}}}$

$c=\left\{\begin{array}{cc}3& \mathrm{<figure-callout\; id="2"\; label="normalCP"\; filenames="HDA00001638695100023.png"\; state="\{\{state\}\}">normalCP</figure-callout>}\\ 2& \mathrm{extendedCP}\end{array}\right.---\left(4\right)$

Wherein, A _Shift{ 1,2,3} and c are the quantity of OS to ∈.As a rule, if a RB has 7 symbols, c=3, and if RB have only 6 symbols, then c=2.

If B. the quantity of the available resources index among first RB is less than the quantity of second available resources index among the RB, then for this UE confirms at least two resource indexs, each resource index is confirmed according to following formula (5).

$\left\{\begin{array}{ccc}s+m+a& \mathrm{if}& s+m<K^{\mathrm{re}}\\ \mathrm{mod}(s+m-K^{\mathrm{re}},K)+a& \mathrm{if}& s+m\&GreaterEqual;K^{\mathrm{re}}\end{array}\right.---\left(5\right)$

In addition, UE or base station can also be confirmed the RB index of UE according to following formula (6).

Wherein, s is first CCE index of UE, and m is a side-play amount, m>=0 wherein, a be 0 and N-1 between value (can corresponding to the quantity of a the CCE of this UE), wherein N is the quantity of the CCE of UE, K ^ReBe the quantity of the available resources index among first RB, K is the quantity of second available resources index among the RB.Here, second RB is commonly referred to as in the uplink channel except that first any RB RB.

In some cases, for only keeping, a RB among a plurality of RB of uplink information transmissions distribution uses K ^ReIndividual resource index, wherein, the quantity K of available resources index ^ReBe less than K.

If C. the quantity of the available resources index among each RB is different, wherein, RB _mIn the quantity of available resources index be K ^m, wherein, m=0,1...M-1 then confirm the RB index of UE according to following formula (7).

RB＝n， $\mathrm{where}\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m<s+m\&le;\underset{m=0}{\overset{n}{\mathrm{\&Sigma;}}}{K}^m---\left(7\right)$

For this UE confirms at least two resource indexs, wherein each resource index is confirmed according to following formula (8):

$s+m-\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m+a,$ Wherein, $\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m<s+m\&le;\underset{m=0}{\overset{n}{\mathrm{\&Sigma;}}}{K}^m---\left(8\right)$

Wherein, s is first CCE index of UE, and m is a side-play amount, wherein, and m>=0, and K ^mBe RB _mIn the quantity of available resources index, wherein m=0,1 ... M-1, wherein, M is the quantity of the available RB of resource index emission, a be 0 and N-1 between value (can corresponding to a CCE among this UE), wherein N is the quantity of the CCE of UE, n is the RB index of UE.

For top situation, if for UE has set up N CCE, then UE has N resource to use at most.For UE, when from the CCE index, being determined to rare two resource indexs, can obtain the DRS index very neatly.Base station or UE only map to a part of CCE index of UE resource index or all CCE index of UE are mapped to resource index; When a part of CCE index with UE mapped to resource index, base station or UE can map to resource index with any CCE index of UE.For example, be respectively 4,5,6,7, but only CCE index 4,7 mapped to the resource index of UE for UE has set up 4 its index of CCE.In any case, all to define the mapping ruler that CCE is indexed to resource index in advance, for example: base station and UE can identify this rule.The set of the resource index of UE can be expressed as Z.

Usually the element among the Z is less than the quantity of available resources index among the RB, and for example, the Resources allocation of a UE is arranged in same RB.

But, there is a kind of special situation, wherein, the one or more elements in the resource index of UE, for example, the element that index is maximum, above the quantity of the available resources index among the RB, therefore, UE confirms that resource index will map to different RB.If the resource index among RB, exceeds one or more elements in the resource index of then representing UE from 0 numbering more than or equal to the quantity of resource index available among the RB; If the resource index among RB, exceeds one or more elements in the resource index of then representing UE from 1 open numbering greater than the quantity of the available resource index among the RB.Limit to be used for satisfying emission because up-link information must be limited to single RB, and the resource index that has distributed is only effective to a RB, does not then allow this incident.But, can avoid this special circumstances through following two kinds of solutions.

The solution 1 of exception:, then delete one of them fixed resource index if the fixed resource index of at least one of UE surpasses the quantity of the available resources index among the RB.In this case, will in UE, obtain the DRS that quantity is less than N.

The solution 2 of exception: the CCE of correct allocation of downlink information goes wrong avoiding in down link.

If the fixed resource index of at least one of UE surpasses the quantity of the available resource block among the RB, the base station will be arranged the position of the CCE that is received by UE again, with the position of the resource index of guaranteeing a UE among the RB.Then, the RB index of UE then becomes the index that the current resource index of UE belongs to.

The index that note that first CCE among each UE should be the integral multiple of the CCE (1,2,4 or 8) of the quantity of the CCE among the PDCCH that is emitted to UE.

Shown in 3, have the example of 31 CCE, wherein, arrow is represented the original position (being made up of four CCE) of the permission of PDCCH.In this example, each RB can hold maximum 18 CCE.

For example, suppose that the quantity of the PDCCH of composition downlink control channel is assigned among 31 CCE of sum, then each RB can be up to 18 resource indexs.Then CCE index 1-18 will map to RB1, and index 19-31 will map to RB2.Referring to Fig. 3.For the PDCCH that is made up of 4 CCE, the original position of permission is those CCE with index 1,5,9,13,17,21,25 and 29, and they are represented with arrow in Fig. 3.Be assumed to be UE and distributed PDCCH with initial CCE index 17.Then corresponding four resource indexs are with belonging to RB1 and RB2 simultaneously, shown in the CCE that has gray shade among Fig. 3.Because resource index will point to single RB, so do not allow to use the set of the resource index among Fig. 3.On the contrary, the base station can comprise the distribution (as shown in Figure 4) of the PDCCH of 4 CCE to the UE arrangement.

Resource index can be DRS index or ACK/NACK index.As stated, the mapping process of RB index, DRS index and ACK/NACK index is independent, and independently of one another.

Sometimes, the index of reference frequency hopping can in the sub-district, be made, so that the interference randomization in minizone or the sub-district.The index frequency hopping representes that index will change according to some frequency-hopping mode in time.Therefore, at definite above-mentioned resource index (RB index or ACK/NACK index or DRS index) afterwards, can also further obtain final resource index according to predefined frequency-hopping mode.

UE can use resource index to come transmission of uplink information.It possibly comprise scenario.

A.UE has a plurality of logical antennas, for each logical antenna distributes predefined DRS index.

Logical antenna is defined as the physical antenna linear combination of transmission data.If some physical antenna does not have the DRS index, then can not it be called logical antenna.No matter why from the content of logical antenna emission, all will be via the mapping that has defined, and launch from physical antenna.Adopt this method, receiver will be looked single transmitting antenna or the logical antenna of physical antenna as equivalence.In fact, under this arrangement, receiver can't be known the quantity of used physical antenna.The notion of logical antenna can expand to a plurality of logical antennas, and each logical antenna is all related with a unique DRS then.

In this case, because at least two different logical antennas have different fixed DRS index, then UE can come transmission of uplink information through the different logical antenna.Can pass through the uplink performance that transmit diversity (particularly when it is the UE of cell edge) improves UE like this.

In addition, UE can distribute at least one fixed ACK/NACK index for a logical antenna.

B. the UE that has one or more logical antennas will distribute at least two fixed ACK/NACK index for a logical antenna.

In this case, because a logical antenna has at least two fixed ACK/NACK index, so UE can be through logical antenna via sign indicating number or spatial multiplexing transmit uplink data.Can increase the uplink information transmissions capacity through sign indicating number or spatial multiplexing like this.

In addition, UE can distribute at least one fixed DRS index for a logical antenna.

In the prior art, can only distribute a resource index for UE.According to embodiments of the invention, we can find out, can confirm a plurality of resource indexs for UE implicit expression, because according to predefined mapping ruler, can CCE be mapped in two resource indexs at least.If the quantity of the available resources index among each RB is all identical; If perhaps the quantity of the available resources index among first RB is less than the quantity of the available resources index among other RB; If perhaps the quantity of the available resources index among each RB is different, then can confirm the resource index of at least two UE.Can avoid the quantity of some disabled resource index quantity of UE like this above the available resources index among the RB.After having distributed a DRS index to each logical antenna, the UE with a plurality of logical antennas can pass through different logical antenna transmit uplink data.Can pass through the uplink performance that transmit diversity (particularly when it is the UE of cell edge) improves UE like this.In addition, be after a logical antenna distributes at least two fixed ACK/NACK index, UE can be through logical antenna via sign indicating number or spatial reuse transmit uplink data.Can increase the uplink information transmissions capacity through sign indicating number or spatial multiplexing like this.

With reference to figure 5, described one embodiment of the present of invention below, it has shown a kind of method of in wireless communication system, confirming resource index for UE.

Piece 501, UE are received at least two CCE from its control channel at least.

This UE can receive a plurality of CCE (as shown in Figure 6, this UE will pick up its CCE according to its expression).

Piece 502, according to predetermined rule, UE is with its at least two resource indexs of CCE mapping.

Before mapping, UE can find the CCE index according to the position of its CCE the CCE sequence that receives from control channel.

With reference to the example among the figure 3, UE 1 will find its CCE index 0.UE 4 will find its CCE index 4,5}.

In this case, according to predetermined rule, UE is with its at least two resource indexs of CCE index mapping.Specifically, it possibly comprise following situation.

If A. the quantity of the available resources index among each RB is identical, then for this UE confirms at least two resource indexs, each resource index is confirmed according to following formula (2).

In addition, UE or base station can also be confirmed the RB index of UE according to formula (3).

If B. the quantity of the available resources index among first RB is less than the quantity of second available resources index among the RB, then for this UE confirms at least two resource indexs, each resource index is confirmed according to formula (5).

In addition, UE or base station can also be confirmed the RB index of UE according to formula (6).

In some cases, for only keeping, a RB among a plurality of RB of uplink information transmissions distribution uses K ^ReIndividual resource index, wherein, the quantity K of available resources index ^ReBe less than K.

If C. the quantity of the available resources index among each RB is different, wherein, RB _mIn the quantity of available resources index be K ^m, wherein, m=0,1...M-1 then confirm the RB index of UE according to following formula (7).

For this UE confirms at least two resource indexs, wherein each resource index is confirmed according to following formula (8):

For top situation, if UE has received N CCE index by base station assigns, then UE will have maximum N resource to use.As UE during, can obtain resource index very neatly from least two resource indexs of its CCE index mapping.UE can only map to resource index with a part of CCE index, perhaps its all CCE index is mapped to resource index; When one of which portion C CE index was mapped to resource index, UE can map to resource index with any CCE index of UE.For example, UE receives 4 CCE index 4,5,6,7, but it only maps to its resource index with CCE index 4,7.In any case all will define the mapping ruler that CCE is indexed to resource index in advance, for example: base station and UE can identify this rule.

If the fixed resource index of at least one of UE exceeds the quantity of an available resources index among the RB, then UE will delete one of them fixed resource index.In this case, will in UE, obtain the DRS that is less than N.

In addition, resource index can be DRS index or ACK/NACK index.The mapping process of RB index, DRS index and ACK/NACK index is independent, and independently of one another.

Sometimes, the index of reference frequency hopping can in the sub-district, be made, so that the interference randomization in minizone or the sub-district.The index frequency hopping representes that index will change according to some frequency-hopping mode in time.Therefore, at definite above-mentioned resource index (RB index or ACK/NACK index or DRS index) afterwards, can also further obtain final resource index according to predefined frequency-hopping mode.

Piece 503, after confirming its resource index, UE can use resource index to come transmission of uplink information.It possibly comprise following situation.

A.UE has a plurality of logical antennas, and is DRS index that has defined of each logical antenna distribution.

In this case, because at least two different logical antennas have different fixed DRS index, so UE can come transmission of uplink information through the different logical antenna.Can pass through the uplink performance that transmit diversity (particularly when it is the UE of cell edge) improves UE like this.

In addition, UE can distribute at least one fixed ACK/NACK index for a logical antenna.

B. the UE that has one or more logical antennas will distribute at least two fixed ACK/NACK index for a logical antenna.

In this case, because a logical antenna has at least two fixed ACK/NACK index, so UE can be through logical antenna via sign indicating number or spatial reuse transmit uplink data.Can increase the uplink information transmissions capacity through sign indicating number or spatial multiplexing like this.

In addition, UE can distribute at least one fixed DRS index for a logical antenna.

In the prior art, can only distribute a resource index for UE.According to embodiments of the invention, we can find out that UE can implicitly confirm a plurality of resource indexs, because according to predefined mapping ruler, can CCE be mapped in two resource indexs at least.Use this way, UE can know up link RB, DRS and ACK/NACK index uniquely so that when emission PUCCH, use.If the quantity of the available resources index among each RB is all identical; If perhaps the quantity of the available resources index among first RB is less than the quantity of the available resources index among other RB; If perhaps the quantity of the available resources index among each RB is different, then UE can confirm at least two resource indexs.UE can avoid some disabled resource index quantity to surpass the quantity of the available resources index among the RB.After having distributed a DRS index to each logical antenna, the UE with a plurality of logical antennas can pass through different logical antenna transmit uplink data.Can pass through the uplink performance that transmit diversity (particularly when it is the UE of cell edge) improves UE like this.In addition, be after a logical antenna distributes at least two fixed ACK/NACK index, UE can be through logical antenna via sign indicating number or spatial reuse transmit uplink data.Can increase the uplink information transmissions capacity through code or spatial multiplexing like this.

One embodiment of the present of invention (with reference to figure 7) are described below, and it has shown a kind of method of in wireless communication system, confirming resource index for UE.

Piece 701, at least two CCE of base station assigns give UE.

UE can be dispatched through the CCE that distributes some in the base station, and the quantity of the number of CCE and channel quality information (Channel Quality Information) and the control information that will launch in the down link direction of UE is relevant.For example, the UE of the lower Signal-to-Noise (SNR) of experience will distribution ratio have high SNR the more CCE of UE because it can utilize the channel code with lower code rate to protect information bit.

Piece 702, according to predetermined mapping ruler, the base station maps to CCE at least two resource indexs of UE.

Specifically, it possibly comprise following situation.

If A. the quantity of the available resources index among each RB is identical, then for this UE confirms at least two resource indexs, each resource index is confirmed according to following formula (2).

In addition, UE or base station can also be confirmed the RB index of UE according to formula (3).

If B. the quantity of the available resources index among first RB is less than the quantity of second available resources index among the RB, then for this UE confirms at least two resource indexs, each resource index is confirmed according to formula (5).

In addition, UE or base station can also be confirmed the RB index of UE according to formula (6).

In some cases, for only keeping, a RB among a plurality of RB of uplink information transmissions distribution uses K ^ReIndividual resource index, wherein, the quantity K of available resources index ^ReBe less than K.

If C. the quantity of the available resources index among each RB is different, wherein, RB _mIn the quantity of available resources index be K ^m, wherein, m=0,1...M-1 then confirm the RB index of UE according to following formula (7).

For this UE confirms at least two resource indexs, wherein each resource index is confirmed according to following formula (8):

For top situation, if for UE has distributed N CCE, then UE has N resource to use at most.When base station during, can obtain the DRS index very neatly from least two resource indexs of the resource index of CCE index mapping.The base station can only map to a part of CCE index of UE resource index or all CCE index of UE are mapped to resource index; When a part of CCE index with UE mapped to resource index, the base station can map to resource index with any CCE index of UE.For example, for UE has distributed 4 to have the CCE index at 4,5,6,7 o'clock, still only CCE index 4,7 is mapped to the resource index of UE.If the fixed resource index of at least one of UE exceeds the quantity of an available resources index among the RB, then one of them fixed resource index will be deleted in the base station.In this case, will in UE, obtain the DRS that is less than N.In other words, the base station can be arranged the position of the CCE that will be received by UE again, is arranged in a RB with the resource index of guaranteeing UE.Then, the base station can change to the RB index of UE the index that the current resource index of UE belongs to.

In addition, resource index can be DRS index or ACK/NACK index.As stated, the mapping process of RB index, DRS index and ACK/NACK index is independent, and independently of one another.

After the base station mapped at least two resource indexs of UE with the CCE index, it can write down RB index and DRS index and ACK/NACK index for UE.

Piece 703, through downlink control channel, the base station can be emitted to UE with CCE.

To the base station (for example, down link) of the emission of UE, will launch a plurality of control channels (expression PDCCH, each all is used for particular UE).Each PDCCH has 1,2,4 or 8 CCE.The example that PDCCH is mapped to CCE provides in Fig. 6, wherein, supposes to use four UE, and UE 1 and UE 2 each all use single CCE, each uses two CCE UE 3 and UE 4.

According to embodiments of the invention, we can find out that a plurality of resource indexs can implicitly be confirmed for UE in the base station, because according to predefined mapping ruler, can CCE be mapped in two resource indexs at least.Therefore, each UE distributed in unique which RB, DRS and the ACK/NACK index of knowing in base station, and when separating timing from each UE, which RB of demodulation, DRS and ACK/NACK index.

If the quantity of the available resources index among each RB is all identical; If perhaps the quantity of the available resources index among first RB is less than the quantity of the available resources index among other RB; If perhaps the quantity of the available resources index among each RB is different, then at least two resource indexs can be confirmed in the base station.

The base station can avoid the disabled resource index quantity of some UE to surpass the quantity of the available resources index among the RB.

To describe one embodiment of the present of invention this moment with reference to figure 8, and it has shown a kind of equipment 80 (it comprises map unit 801) of in wireless communication system, confirming resource index.

According to predefined mapping ruler, map unit 801 is configured at least two CCE of UE are mapped to the resource index of UE.

Equipment 80 can also comprise one and set up unit 802, is configured to set up at least two CCE into UE.

Map unit 801 can also comprise the unit below at least one: first confirms 8011, the second definite unit 8012, unit and the 3rd definite unit 8013.

First confirms unit 8011, is configured to confirm at least two resource indexs of UE, and each resource index is confirmed according to following formula:

mod(s+m，K)+a

Wherein, s is first CCE index of UE, and m is a side-play amount, m >=0 wherein, K is the quantity of the available resources index in the Resource Block (RB), a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE.

Second confirms unit 8012, is configured to confirm at least two resource indexs of UE, and each resource index is confirmed according to following formula:

$\left\{\begin{array}{ccc}s+m+a& \mathrm{if}& s+m<K^{\mathrm{re}}\\ \mathrm{mod}(s+m-K^{\mathrm{re}},K)+a& \mathrm{if}& s+m\&GreaterEqual;K^{\mathrm{re}}\end{array}\right.$

Wherein, s is the quantity of first CCE index of UE, and m is a side-play amount, m>=0 wherein, a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE, K ^ReBe the quantity of the available resources index among first RB, K is the quantity of second available resources index among the RB.

The 3rd confirms unit 8013, is configured to confirm at least two resource indexs of UE, and each resource index is confirmed according to following formula:

$s+m-\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m+a,$ Wherein, $\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m<s+m\&le;\underset{m=0}{\overset{n}{\mathrm{\&Sigma;}}}{K}^m$

Wherein, s is the quantity of first CCE index of UE, and m is a side-play amount, wherein, and m>=0, and K ^mBe RB _mIn the quantity of available resources index, wherein m=0,1 ... M-1, wherein, M is the quantity of the available RB of resource index, a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE, n is the RB index of UE.

If the fixed resource index of at least one of UE exceeds the quantity of an available resources index among the RB, then equipment 80 also comprises delete cells 803 and/or rearranges unit 804.

Delete cells 803 is configured to delete at least one fixed resource index.

Again arrangement units 804, are configured to rearrange the position with the CCE that is received by UE, are arranged in a RB with the resource index of guaranteeing UE.

Resource index is DRS index or ACK/NACK index.

Equipment 80 also comprises first allocation units 805 and/or second allocation units 806.

First allocation units 805 are configured to: if UE has a plurality of logical antennas, then distribute a fixed DRS index for each logical antenna.

Second allocation units 806 is configured to: be that a logical antenna distributes at least two fixed ACK/NACK index.

Equipment 80 also comprises the 3rd allocation units 807, is configured to distribute at least one fixed ACK/NACK index into each logical antenna.

Equipment 80 can be UE or base station.

According to embodiments of the invention, we can find out that equipment 80 can implicitly be confirmed a plurality of resource indexs for UE, because according to predefined mapping ruler, equipment 80 can map to CCE in two resource indexs at least.If the quantity of the available resources index among each RB is all identical; If perhaps the quantity of the available resources index among first RB is less than the quantity of the available resources index among other RB; If perhaps the quantity of the available resources index among each RB is different, then equipment 80 can be confirmed at least two resource indexs.Equipment 80 can avoid some disabled resource index quantity to exceed the quantity of an available resources index among the RB.If equipment 80 is UE, after all having distributed a DRS index to each logical antenna, the UE with a plurality of logical antennas can pass through different logical antenna transmit uplink data.Can pass through the uplink performance that transmit diversity (particularly when it is the UE of cell edge) improves UE like this.In addition, if equipment 80 is UE, be after a logical antenna distributes at least two fixed ACK/NACK index, UE can be through logical antenna via code or spatial reuse transmit uplink data.Can increase the uplink information transmissions capacity through code or spatial multiplexing like this.

To describe one embodiment of the present of invention this moment with reference to figure 9, and it has shown a kind of system 90 (it comprises base station 91 and UE 92) that in wireless communication system, confirms resource index.

According to predefined mapping ruler, this base station 91 is configured at least two CCE are distributed to UE 92; CCE is mapped at least two resource indexs of UE 92, and CCE is sent to UE 92.

According to predefined mapping ruler, UE 92 is configured to the 91 reception CCE from the base station, and CCE is mapped at least two resource indexs of UE 92.

Specifically, base station 91 possibly comprise map unit 801 (as shown in Figure 10).According to predefined mapping ruler, map unit 801 is configured at least two CCE of UE 92 are mapped at least two resource indexs of UE 92.

Base station 91 also comprises allocation units 911, is configured to distribute to UE 92 to two CCE of major general.

Map unit 801 can also comprise the unit below at least one: first confirms 8011, the second definite unit 8012, unit and the 3rd definite unit 8013.

First confirms unit 8011, is configured to confirm at least two resource indexs of UE 92, and each resource index is confirmed according to following formula:

mod(s+m，K)+a

Wherein, s is first CCE index of UE 92, and m is a side-play amount, m >=0 wherein, K is the quantity of the available resources index in the Resource Block (RB), a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE 92.

Second confirms unit 8012, is configured to confirm at least two resource indexs of UE 92, and each resource index is confirmed according to following formula:

$\left\{\begin{array}{ccc}s+m+a& \mathrm{if}& s+m<K^{\mathrm{re}}\\ \mathrm{mod}(s+m-K^{\mathrm{re}},K)+a& \mathrm{if}& s+m\&GreaterEqual;K^{\mathrm{re}}\end{array}\right.$

Wherein, s is the quantity of first CCE index of UE, and m is a side-play amount, m>=0 wherein, a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE 92, K ^ReBe the quantity of the available resources index among first RB, K is the quantity of second available resources index among the RB.

The 3rd confirms unit 8013, is configured to confirm at least two resource indexs of UE 92, and each resource index is confirmed according to following formula:

$s+m-\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m+a,$ Wherein, $\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m<s+m\&le;\underset{m=0}{\overset{n}{\mathrm{\&Sigma;}}}{K}^m$

Wherein, s is the quantity of first CCE index of UE 92, and m is a side-play amount, wherein, and m>=0, and K ^mBe RB _mIn the quantity of available resources index, wherein m=0,1 ... M-1, wherein, M is the quantity of the available RB of resource index, a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE 92, n is the RB index of UE 92.

If the fixed resource index of at least one of UE 92 exceeds the quantity of an available resources index among the RB, then base station 91 also comprises delete cells 803 and/or rearranges unit 804.

Delete cells 803 is configured to delete at least one fixed resource index.

Again arrangement units 804, are configured to rearrange the position with the CCE that is received by UE 92, are arranged in a RB with the resource index of guaranteeing UE92.

Resource index is DRS index or ACK/NACK index.

Base station 91 also comprises record cell 912, and it is configured to write down the resource index of UE 92.

Base station 91 also comprises transmitting element 913, and it is configured to through downlink control channel, and CCE is emitted to UE 92.

With reference to Figure 11, UE 92 also comprises map unit 801, according to predetermined mapping ruler, is configured at least two CCE of UE92 are mapped at least two resource indexs of UE 92.

UE 92 also comprises receiving element 921, is configured at least two CCE of 91 receptions from the base station.

Map unit 801 can also comprise the unit below at least one: first confirms 8011, the second definite unit 8012, unit and the 3rd definite unit 8013.

First confirms unit 8011, is configured to confirm at least two resource indexs of UE 92, and each resource index is confirmed according to following formula:

mod(s+m，K)+a

Wherein, s is first CCE index of UE 92, and m is a side-play amount, m >=0 wherein, K is the quantity of the available resources index in the Resource Block (RB), a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE 92.

Second confirms unit 8012, is configured to confirm at least two resource indexs of UE 92, and each resource index is confirmed according to following formula:

$\left\{\begin{array}{ccc}s+m+a& \mathrm{if}& s+m<K^{\mathrm{re}}\\ \mathrm{mod}(s+m-K^{\mathrm{re}},K)+a& \mathrm{if}& s+m\&GreaterEqual;K^{\mathrm{re}}\end{array}\right.$

Wherein, s is the quantity of first CCE index of UE, and m is a side-play amount, m>=0 wherein, a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE 92, K ^ReBe the quantity of the available resources index among first RB, K is the quantity of second available resources index among the RB.

The 3rd confirms unit 8013, is configured to confirm at least two resource indexs of UE 92, and each resource index is confirmed according to following formula:

$s+m-\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m+a,$ Wherein, $\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m<s+m\&le;\underset{m=0}{\overset{n}{\mathrm{\&Sigma;}}}{K}^m$

Wherein, s is the quantity of first CCE index of UE 92, and m is a side-play amount, wherein, and m>=0, and K ^mBe RB _mIn the quantity of available resources index, wherein m=0,1 ... M-1, wherein, M is the quantity of the available RB of resource index, a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE 92, n is the RB index of UE 92.

If the fixed resource index of at least one of UE 92 exceeds the quantity of an available resources index among the RB, then UE 92 also comprises delete cells 803.

Delete cells 803 is configured to delete at least one fixed resource index.

Resource index is DRS index or ACK/NACK index.

UE 92 also comprises first allocation units 805 and/or second allocation units 806.

First allocation units 805 are configured to: if UE 92 has a plurality of logical antennas, then all distribute a fixed DRS index for each logical antenna.

Second allocation units 806 are configured to: be that a logical antenna distributes at least two fixed ACK/NACK index.

UE 92 also comprises the 3rd allocation units 807, is configured to distribute at least one fixed ACK/NACK index into each logical antenna.

According to embodiments of the invention, we can find out that system 90 can confirm a plurality of resource indexs for UE 92 implicit expression, because according to predefined mapping ruler, can CCE be mapped in two resource indexs of UE 92 at least.If the quantity of the available resources index among each RB is all identical; If perhaps the quantity of the available resources index among first RB is less than the quantity of the available resources index among other RB; If perhaps the quantity of the available resources index among each RB is different, then system 90 can confirm at least two resource indexs of UE 92.System 90 can avoid some disabled resource index quantity of UE 92 to exceed the quantity of an available resources index among the RB.If UE 92 has a plurality of logical antennas, then after giving at least two different logical antennas with at least two different DRS index assignment, UE 92 can pass through different logical antenna transmit uplink data.Can pass through the uplink performance that transmit diversity (particularly when it is cell edge UE) improves UE 92 like this.In addition, be that UE 92 can come transmit uplink data via code or spatial reuse through logical antenna after a logical antenna distributed at least two ACK/NACK index.Can increase the uplink information transmissions capacity through code or spatial multiplexing like this.

For a better understanding of the present invention, some detailed embodiment also are provided.

A detailed embodiment, each RB that supposes to be used for transmission of uplink information has the resource index of equal number, c=3 and Δ _Shift=2, and the resource index among RB add up to K=12*3/2=18 (according to formula (4)), it is numbered 0,1 ..., 17.In this example, five UE that receive PDCCH from the base station are arranged.

1. each UE is distributed to the CCE of some in the base station.

Dispatched users is come through the CCE that distributes some in the base station, and the quantity of the number of CCE and channel quality information (Channel Quality Information) and the control information that will in the down direction of UE, launch is relevant.

These 5 UE distribute to the PDCCH that is made up of 1,1,2,4 and 8 CCE respectively.

The mapping of CCE to PDCCH as shown in Figure 12.

2. the base station maps to CCE the resource index of each UE.If UE has a plurality of CCE, according to predetermined mapping ruler, the base station maps to CCE at least two resource indexs of UE.

If the offset information m of broadcasting equals 1, then according to formula (3), each UE has same RB index 0.Can confirm the DRS index of each UE: Z according to formula (2) _D1={ 1}, Z _D2={ 2}, Z _D3=3,4}, Z _D4=5,6,7,8}, Z _D5=9,10,11,12,13,14,15,16}.

Can confirm the ACK/NACK index of each UE: Z according to formula (2) _A1={ 1}, Z _A2={ 2}, Z _A3=3,4}, Z _A4=5,6,7,8}, Z _A5=9,10,11,12,13,14,15,16}.

In this embodiment, all resource indexs of each UE of base station maps.

RB index, DRS index and the ACK/NACK index of each UE can be write down in the base station.

3. through downlink control channel, the base station can be emitted to each UE (as shown in Figure 13) with CCE.

4. the UE4 that has two logical antennas will receive its CCE from control channel.

5. according to predetermined rule, UE4 can map at least two resource indexs with its CCE.

UE4 is according to the position of CCE in the CCE sequence, search its CCE index 4,5,6,7}.

According to predetermined rule, UE4 can map at least two resource indexs with its CCE index.

Because broadcasting offset information m equals 1, so according to formula (3), UE 4 can confirm its RB index 0.It will shine upon from portion C CE index 5, two DRS index of 7} 6,8} (according to formula (2), and confirm its ACK/NACK index 5,6,7,8} (according to formula (2)).

6. after confirming its resource index, UE4 will use RB index, DRS index and ACK/NACK index to come transmission of uplink information.

It can { 5,6} be dispensed to first logical antenna with RB index 0, DRS index 6 and ACK/NACK index; { 7,8} is dispensed to second logical antenna for RB index 0, DRS index 8 and ACK/NACK index.

UE4 can pass through the different logical antenna; Control information is emitted to the base station; Because the different logical antenna has different fixed DRS index; Can also be through logical antenna via sign indicating number or spatial reuse emission data, because a logical antenna has two fixed ACK/NACK index.

A detailed embodiment supposes c=3 and Δ once more _ShiftResource index among=2, RB add up to K=12*3/2=18 (according to formula (4)), be numbered 0,1 ..., 17.In addition, have two RB to be used for the PUCCHACK/ANCK emission, wherein, first RB has only 6 resource indexs, so K ^Re=6, and second RB has 18 resource indexs.In this example, there are six UE receiving PDCCH from the base station.

1. each UE is distributed to the CCE of some in the base station.

UE is dispatched through the CCE that distributes some in the base station, and wherein the quantity of the number of CCE and channel quality information (Channel Quality Information) and the control information that will in the down direction of UE, launch is relevant.

6 UE distribute to PDCCH (respectively by 2,2,2,2,4 and 4 CCE form).

The mapping of CCE to PDCCH as shown in Figure 13.

2. the base station maps to CCE the resource index of each UE.If UE has a plurality of CCE, according to predetermined mapping ruler, the base station maps to CCE at least two resource indexs of UE.

If broadcasting offset information m equals 0, then UE1, UE2, UE3 have identical RB index 0, and UE4, UE5, UE6 have identical RB index 1 (according to formula (6)).The DRS index of UE1, UE2, UE3, UE4, UE5, UE6 can be confirmed according to formula (5): Z _D1=0,1}, Z _D2=2,3}, Z _D3=4,5}, Z _D4=0,1}, Z _D5=2,3,4,5}, Z _D6=6,7,8,9}.

Can confirm the ACK/NACK index of each UE: Z according to formula (5) _A1=0,1}, Z _A2=2,3}, Z _A3=4,5}, Z _A4=0,1}, Z _A5=2,3,4,5}, Z _A6=6,7,8,9}.

In this embodiment, all resource indexs of each UE of base station maps.

RB index, DRS index and the ACK/NACK index of each UE can be write down in the base station.

3. through downlink control channel, the base station can be emitted to each UE (as shown in Figure 13) with CCE.

4. the UE6 that has three logical antennas will receive its CCE from control channel.

5. according to predetermined mapping ruler, UE6 can map at least two resource indexs with its CCE.

UE6 is according to the position of CCE in the CCE sequence, search its CCE index 12,13,14,15}.

According to predetermined rule, UE6 can map at least two resource indexs with its CCE index.

Because broadcasting offset information m equals 0 and K ^Re=6, so according to formula (6), UE6 can confirm its RB index 1.It will shine upon from its portion C CE index 12, two DRS index of 13} 6,7} (according to formula (5)), and confirm from portion C CE index 13, the ACK/NACK index of 15} 7,9} (according to formula (5)).

6. after confirming its resource index, UE6 will use RB index, DRS index and ACK/NACK index to come transmission of uplink information.

It can be dispensed to first logical antenna with RB index 1, DRS index 6 and ACK/NACK index 7; RB index 1, DRS index 7 and ACK/NACK index 9 are dispensed to second logical antenna.

UE4 can pass through different logical antenna emission control information, because at least two different logical antennas have different fixed DRS index.

A fixed embodiment has shown a kind of exception when using, and for example: one of them UE has a money

Source index assignment problem.Each RB that supposes to be used for transmission of uplink information has the resource index of equal number,

C=3 and Δ _Shift=3, and the resource index among RB add up to K=12*3/2=12 (according to formula (4)), it is numbered 0,1 ..., 11.In this example, four UE that receive PDCCH from the base station are arranged.

1. each UE is distributed to the CCE of some in the base station.

Dispatched users is come through the CCE that distributes some in the base station, and wherein the quantity of the number of CCE and channel quality information (Channel Quality Information) and the control information that will in the down direction of UE, launch is relevant.

4 UE distribute to PDCCH (respectively by 2,2,4 and 4 CCE form).

The mapping of CCE to PDCCH as shown in Figure 14.

2. the base station maps to CCE the resource index of each UE.If UE has a plurality of CCE, according to predetermined mapping ruler, the base station maps to CCE at least two resource indexs of UE.

If broadcasting offset information m equals 2, then according to formula (3), each UE has same RB index 0.Can confirm the DRS index of each UE: Z according to formula (2) _Dl=2,3}, Z _D2=4,5}, Z _D3=6,7,8,9}, Z _D4=10,11,12,13}.

Can confirm the ACK/NACK index of each UE: Z according to formula (2) _A1=2,3}, Z _A2=4,5}, Z _A3=6,7,8,9}, Z _A4=10,11,12,13}.

In this embodiment, all resource indexs of each UE of base station maps.

Can find out, distribute to two DRS{12 of UE4,13} has exceeded the scope (because having only 12 DRS) of the DRS among the RB.The ACK/NACK index of UE4 also has this problem.

When this thing happens, the fixed DRS of UE4 will be Z _D4=10, and 11}, the ACK/NACK index of UE4 will be Z _A4=10,11} (according to first fortuitous event solution).

Use another kind of method, the CCE of UE4 can be rearranged to avoid the generation problem in the base station, and promptly the fortuitous event solution 2.For example, the mapping of CCE to PDCCH can change to the content shown in Figure 15.

In this case, the RB index of UE4 will be 1; The DRS that confirms for UE4 will be Z _D4=2,3,4, and 5}, and the ACK/NACK index of UE4 will be Z _A4=2,3,4,5}.The PUCCH of UE4 will send in second RB.

RB index, DRS index and the ACK/NACK index of each UE can be write down in the base station.

3. through downlink control channel, the base station can be emitted to each UE (as shown in Figure 13) with CCE.

4. the UE4 that has two logical antennas will receive its CCE from control channel.

5. according to predetermined rule, UE4 can map at least two resource indexs with its CCE.

UE4 is according to the position of CCE in the CCE sequence, search its CCE index 12,13,14,15}.

According to predetermined mapping ruler, UE4 can map at least two resource indexs with its CCE index.

Because broadcasting offset information m equals 2, so according to formula (3), UE 4 can confirm its RB index 1.It will shine upon from portion C CE index 12,13, three DRS index of 15} 2,3,5} (according to formula (2)), and confirm its ACK/ NACK index 2,3,4,5} (according to formula (2)).

6. after confirming its resource index, UE4 will use RB index, DRS index and ACK/NACK index to come transmission of uplink information.

It can { 2, { 4.5} be dispensed to first logical antenna for 5} and ACK/NACK index with RB index 1, DRS index; { 2.3} is dispensed to second logical antenna for RB index 1, DRS index 3 and ACK/NACK index.

UE4 can pass through the different logical antenna; Control information is emitted to the base station; Because the different logical antenna has different fixed DRS index; Can also be through logical antenna via code or spatial reuse emission data, because a logical antenna has two fixed ACK/NACK index.

Embodiment in this scope of the present invention also comprises computer program, and (have computer program code A1, as shown in Figure 16), when when computer is carried out, it will make computer can carry out the step in the above-mentioned illustration method.Especially, the present invention is relevant with the computer program with computer program code A1, when this program of execution, with making base station or subscriber equipment can carry out the step in the foregoing invention method.The present invention is also relevant with the computer-readable medium A that is used for carrying or having computer program code A1 (according to the present invention) (for example: store on computers computer-executable code, computer executable instructions, computer-readable instruction or data structure).These computer-readable mediums can have any available medium, can be visited by the computer system of general service or special-purpose.Through the method in the example (but being not limited to); These computer-readable mediums (for example: RAM, ROM or other disk storages, magnetic memory or other magnetic storage device can comprise physical storage medium; Perhaps other can be used for carrying or storing the medium of required program code means); Form is computer executable instructions, computer-readable instruction or data structure, and it can conduct interviews through the computer system of general service or special-purpose.Figure 16 with computer-readable medium as compact disk.

If the function of these embodiment and above-described this type of embodiment does not repel each other, then can be used in combination.

Should be appreciated that the present invention is not limited in foregoing, and embodiment carried out for example proof, and can be within the scope of the invention to embodiment make amendment (as shown in the rights statement of enclosing).

Claims (16)

1. method that is used for confirming the wireless communication system resource index is characterized in that:

For at least two control channel Elements C CE of a user equipment (UE),, the CCE of UE is mapped at least two resource indexs according to predetermined mapping ruler.

2. the method for claim 1, wherein according to predefined mapping ruler, at least two resource indexs that CCE mapped to UE comprise:

Confirm at least two resource indexs of UE, wherein each resource index is confirmed according to following formula: and mod (s+m, K)+a

Wherein, s is first CCE index of UE, and m is a side-play amount, m >=0 wherein, K is the quantity of an available resources index among the Resource Block RB, a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE.

3. the method for claim 1, wherein according to predefined mapping ruler, at least two resource indexs that CCE mapped to UE comprise:

Confirm at least two resource indexs of UE, wherein each resource index is confirmed according to following formula:

$\left\{\begin{array}{ccc}s+m+a& \mathrm{if}& s+m<K^{\mathrm{re}}\\ \mathrm{mod}(s+m-K^{\mathrm{re}},K)+a& \mathrm{if}& s+m\&GreaterEqual;K^{\mathrm{re}}\end{array}\right.$

Wherein, s is the quantity of first CCE index of UE, and m is a side-play amount, m>=0 wherein, a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE, K ^ReBe the quantity of the available resources index among first RB, K is the quantity of second available resources index among the RB.

4. the method for claim 1, wherein according to predefined mapping ruler, at least two resource indexs that CCE mapped to UE comprise:

Confirm at least two resource indexs of UE, wherein each resource index is confirmed according to following formula:

$s+m-\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m+a,$ Wherein, $\underset{m=0}{\overset{n-1}{\mathrm{\&Sigma;}}}{K}^m<s+m\&le;\underset{m=0}{\overset{n}{\mathrm{\&Sigma;}}}{K}^m$

Wherein, s is the quantity of first CCE index of UE, and m is a side-play amount, wherein, and m>=0, and K ^mBe RB _mIn the quantity of available resources index, wherein m=0,1 ... M-1, wherein, M is the quantity of the available RB of resource index, a be 0 and N-1 between value, wherein N is the quantity of the CCE of UE, n is the RB index of UE.

5. like the described method of claim 1-4, wherein, confirmed that at least one that responds UE resource index exceeds the quantity of an available resources index among the RB, this method also comprises:

Delete at least one fixed resource index.

6. the method for claim 1, wherein in order to respond the quantity that at least one resource index exceeds an available resources index among the RB, this method also comprises:

Again arrange the position of the CCE that will receive by UE, be arranged in a RB with the resource index of guaranteeing UE.

7. the method for claim 1, wherein resource index is demodulated reference signal DRS index or ACK/NACK index.

8. method as claimed in claim 7, wherein, UE has a plurality of logical antennas, and this method also comprises:

Through UE, for each logical antenna distributes a fixed DRS index.

9. method as claimed in claim 8, wherein, this method also comprises:

Be that a logical antenna distributes at least two fixed ACK/NACK index.

10. method as claimed in claim 8, wherein, this method also comprises:

Be that a logical antenna distributes at least one fixed ACK/NACK index.

11. an equipment that is used for confirming the wireless communication system resource index is characterized in that:

A map unit is configured to according to predetermined mapping ruler, at least two control channel Elements C CE of a user equipment (UE) is mapped at least two resource indexs of UE.

12. equipment according to claim 11, wherein, resource index is demodulated reference signal DRS index or ACK/NACK index.

13. equipment as claimed in claim 12, wherein, UE has a plurality of logical antennas, and this equipment also comprises:

First allocation units are configured to each logical antenna and all distribute a fixed DRS index.

14. equipment as claimed in claim 13, wherein, this equipment also comprises:

Second logical block is configured to distribute at least two fixed ACK/NACK index into each logical antenna.

15. equipment as claimed in claim 13, wherein, this equipment also comprises:

The 3rd logical block is configured to distribute at least one fixed ACK/NACK index into each logical antenna.

16. a system that is used for confirming the wireless communication system resource index, its characteristic comprises:

A base station is configured to communicate with a user equipment (UE); Wherein,

This base station configuration is for to distribute to UE with at least two control channel Elements C CE; According to predefined mapping ruler, CCE is mapped at least two resource indexs of UE, and CCE is sent to UE; And

According to predefined mapping ruler, UE is configured to the reception CCE from the base station, and CCE is mapped at least two resource indexs of UE.

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