WO2011041958A1

WO2011041958A1 - Method and terminal for transmitting rank indication information by using uplink subframe

Info

Publication number: WO2011041958A1
Application number: PCT/CN2010/075463
Authority: WO
Inventors: 安豆娃
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-10-10
Filing date: 2010-07-26
Publication date: 2011-04-14
Also published as: CN102045141A; CN102045141B

Abstract

A method and a terminal for sending Rank Indication(RI) information using an uplink subframe are provided by the present invention. Wherein, the method includes: a User Equipment (UE) acquires a group K including several k values according to the current ratio of uplink and downlink, and detects whether a downlink subframe occupies a Physical Downlink Control Channel (PDCCH) and an aggregation degree of a Control Channel Element (CCE) occupying the PDCCH, wherein m is an index of the group K; and the UE acquires logical resources indexes impliedly included by a Physical Uplink Control Channel (PUCCH) according to the downlink subframe occupying the PDCCH and the aggregation degree of the CCE; when the aggregation degree is greater than 1, the UE sends an RI information to a base station on an uplink subframe through the PUCCH by selecting physical resources corresponding to any logical resources index impliedly included by the PUCCH. The present invention sends the RI by adequately using the resources impliedly included by the PUCCH format 1/1a/1b, thereby saving on the physical resources of the PUCCH format 2/2a/2b.

Description

Method and terminal for transmitting rank indication information by using uplink subframe

The present invention relates to the LTE (Long Term Evolution) technology, and in particular, to a method for transmitting RI ( Rank Indication) information by using an uplink subframe, and a terminal for transmitting RI information by using an uplink subframe. Background technique

In the LTE system, the application of the HARQ (Hybrid Automatic Repeat Quest) technology improves the reliability of communication. It determines whether to retransmit old data by feedback ACK/NACK (acknowledgement/non-confirmation) information. For the downlink HARQ, the ACK/NACK is fed back by the PUSCH (Physical Uplink Shared Channel) or the PUCCH (Physical Uplink Control Channel).

For the TDD (Time Division Duplexing) system, the system frame structure is as shown in Figure 1. The asymmetry of the uplink and downlink subframes determines that an uplink subframe may need to feed back ACK/NACK conditions of several downlink subframes. The specific subframe configuration is shown in Figure 2. For example, when a user equipment (UE) is configured as the TDD uplink and downlink subframe configuration 1, in the uplink subframe n = 2, the UE demodulation result ACK information of the previous two downlink subframes n-7 and n-6 needs to be fed back. Or NACK information, the feedback relationship is shown in Figure 3. For the Bunding feedback mode, the protocol stipulates that two frames n = 2 are fed back. If the two streams get 2bit results, the logical sum is shown in Figure 4.

The lbit or 2bit information generated by the UE needs to be fed back to the base station, and the base station determines whether it is necessary to retransmit the old data. When there is no PUSCH scheduling in the uplink, the information needs to be sent to the base station through the PUCCH, and transmitted on the PUCCH format la or lb. For the Bunding binding feedback mode, the calculation of the PUCCH logical resource index for transmitting ACK/NACK information is currently in the protocol. Provisions:

n uccH = (Mml) x N _p + mxN _{p + l} + n _CCE + N _CCH . where N _p is the total number of control channel particles (CCEs) of p symbols in the physical downlink control channel (PDCCH), Np ₊ i The total number of CCEs of the p+1 symbols in the PDCCH; m is the index of the smallest k value; the index value of the control channel particle CCE occupying the start of the PDCCH of the downlink subframe corresponding to the minimum k value is nCCE; ^fficcH It is a PUCCH logical resource reserved by the base station to the SR (Scheduling Request) and the semi-static ACK/NACK, which is obtained by the RRC (Radio Resource Control) layer configuration of the base station; M is required for the uplink subframe. The most number of downlink subframes ACK/NACK is fed back; in addition, the uplink and downlink ratio is notified by the base station to the UE by broadcast.

Figure 5 takes the TDD uplink and downlink ratio 3 as an example, and obtains the mapping map of the PUCCH logical resource index (M = 3) according to the above formula. ^{The CCH} determines the size of the RB Resource block occupied by the PUCCH. The larger the UCCH value, the more the PUCCH occupies the RB.

Therefore, the goal of the system design is to make the "^CCiZ value as small as possible, and the key to determine the UCCH size lies in the value of m. The agreement specifies that the value of m is the m value that minimizes k _m (k _m GK ), and The UE detects the PDCCH in the downlink subframe n-km, where the definition of the set K is shown in Fig. 6. In the uplink and downlink ratio 3 of Fig. 6, the set K of the uplink subframe 2 is {k ₀ = 7,

11}, the UE detects the PDCCH in all three downlink subframes, and finds the smallest k _m = 6 in the set K to obtain the index m=1 of the k _m . In Fig. 5, the uncolored frame indicates the n-7th subframe logical resource (m = 0), the black frame indicates the n-6th subframe logical resource (m = 1), and the gray box indicates the n-11th subframe logical resource ( m = 2 ), NCCE, represents the number of CCEs when the PCFICH value is p, so the black square is the location of the PUCCH logical resource that feeds back the ACK/NACK, and the corresponding is the calculated PUCCH logical resource index.

Obviously, ^^cc" obtained according to the current protocol calculation method is not the optimal method, because There is a smaller m value, both in the figure and in the formula, m = 0 can make

"PUCCH is smaller.

Similarly, for the same problem as the matching ratio 3 in the TDD other uplink and downlink matching modes in Fig. 6, a resource map similar to that in Fig. 5 can be obtained, and the m value selection method according to the existing protocol can be seen. None of the obtained m values are obtained, so the resulting "He/ is not necessarily the smallest. Therefore, the Applicant intends to provide a method to make ^ smaller so that the PUCCH takes up less RBs.

In addition, the RI reflects the rank of the spatial channel matrix, and the UE feeds back the measured RI/PMI (Precoding Matrix Indicator) value to the base station, and the base station can select an optimal downlink precoding matrix according to the RI. It can effectively eliminate channel correlation and ensure the stability of MIMO (Multi-Input Multiple-Output) system in various environments.

The RI can feed back on the PUSCH or PUCCH. When there is no PUSCH scheduling, the RI is sent on the PUCCH.

In the current implementation, when both RI and ACK/NACK are present, the joint encoding is sent in PUCCH format 2a or 2b. First, the RI information is encoded (20, A) to obtain 20-bit information, and after scrambling, QPSK (Quadature Phase Shift Keying) modulation is performed to obtain 10 symbols; 1/2 of ACK/NACK is performed separately. BPSK (Binary Phase Shift Keying) or QPSK modulation obtains 1 symbol, and finally 11 symbols are mapped to PUCCH for transmission.

Obviously, the above implementation method is a waste of resources. When RI and ACK/NACK are both present, transmission in PUCCH format 2a/2b can be re-optimized because RI has only lbit or 2bit information. Summary of the invention

The technical problem to be solved by the present invention is to provide a method for transmitting feedback RI information by using an uplink subframe. The method and the terminal optimize the utilization of the PUCCH resources in the prior art, and save the physical resources occupied by the PUCCH.

In order to solve the above technical problem, the technical solution of the present invention is implemented as follows:

A method for feeding back RI information by using an uplink subframe, the method comprising:

The UE obtains the set K with the k value according to the current uplink-downlink ratio, and detects whether the downlink subframe nk _m occupies the PDCCH and the CCE aggregation degree of the PDCCH, where m is the index of the set K; and according to the downlink occupying the PDCCH Subframe and the degree of aggregation of the CCE, obtained

The logical resource index implied by PUCCH;

When the degree of aggregation is greater than 1, the UE selects any physical resource corresponding to the logical resource index implied by the PUCCH, and sends RI information to the base station through the PUCCH in the uplink subframe n.

The process of obtaining the implicit logical resource index includes:

The UE selects a downlink subframe with the smallest value of m from the detected downlink subframe that occupies the PDCCH, and according to the minimum value of m and the minimum value of the m, the downlink subframe occupies the starting CCE of the PDCCH. The index value, and the CCE aggregation degree of the PDCCH, obtain a PUCCH logical resource index and an implicit logical resource index.

The process of obtaining the PUCCH logical resource index includes:

The UE is based on the minimum value of m, the index value of the initial CCE, the total number of CCEs of p symbols in the PDCCH, and the total number of CCEs of p+1 symbols, and M and

Obtaining the PUCCH logical resource index;

The W3⁄4 CCH is a PUCCH logical resource reserved by the base station to the scheduling request information and the semi-static ACK/NACK, and is configured by the radio resource control protocol layer of the base station; the M is the number of elements in the set K.

According to the minimum value of 11, the index value of the starting CCE, the total number of CCEs of p symbols in the PDCCH, and the total number of CCEs of p+1 symbols, and M and The method for taking the PUCCH logical resource index is:

n uccH = (Mml) x N _p + mxN _{p + l} + n _CCE + N _CCH . The method further includes:

The UE selects a symbol index value p of the PDCCH from the set {0, 1, 2, 3} according to the index value of the starting CCE.

Also includes:

The index value of the initial CCE is greater than or equal to the total number of CCEs of p symbols in the PDCCH, and is less than the total number of CCEs of p+1 symbols in the PDCCH, Np+1.

A terminal for using the uplink subframe to feed back RI information, comprising: an information organization module, a parameter detection module, a resource acquisition module, and a sending module;

The information organization module is configured to obtain a set K of a plurality of k values according to the current uplink and downlink ratio, and determine that the downlink subframe nk _m notifies the parameter detecting module, where m is an index of a plurality of k values; The parameter detecting module triggers, and notifies the sending module of the RI information;

The parameter detecting module is configured to detect the occupancy of the PDCCH by the downlink subframe nk _m , and obtain the aggregation degree of the CCE of the PDCCH from the downlink subframe that occupies the PDCCH, and send the aggregation degree to the resource acquiring module; Up to the degree of aggregation greater than 1, triggering the information organization module and the sending module;

The resource obtaining module is configured to obtain a logical resource index implied by the PUCCH according to the downlink subframe occupying the PDCCH and the aggregation degree, and notify the sending module;

The sending module is triggered by the parameter detecting module, and is configured to select, by using the physical resource corresponding to the logical resource index implied by any one of the PUCCHs provided by the resource acquiring module, to send the RI information by using the PUCCH to the uplink subframe n. Base station.

When obtaining the logical resource index implied by PUCCH,

The parameter detecting module is configured to obtain a value of m from a downlink subframe that occupies the PDCCH. And sending to the resource acquisition module;

The resource obtaining module is configured to obtain a logical resource index implied by the PUCCH according to the minimum value m, the index value, and the aggregation degree, and notify the sending module.

The parameter detecting module is further configured to notify the information organization module when detecting that the degree of aggregation is not greater than one;

The information organization module is further configured to jointly encode the acknowledgment/non-acknowledgment ACK/NACK information and the RI information, and notify the sending module;

The sending module is further configured to send the joint encoded information to the base station on the PUCCH format 2a/2b.

When the PUCCH logical resource index is obtained,

The parameter detecting module is configured to obtain, from the downlink subframe that occupies the PDCCH, the smallest value of m, the index value of the starting CCE, the total number of CCEs of the p symbols in the PDCCH, and p+1 The total number of CCEs of the symbol, and the M and WiiccH, are sent to the resource acquisition module, and the resource acquisition module is configured to: according to the minimum value of m, the index value of the initial CCE, and the PDCCH The total number of CCEs of p symbols and the total number of CCEs of p+1 symbols, and M and

Obtaining the PUCCH logical resource index and notifying the sending module.

Advantageous technical effects of the present invention:

The invention fully utilizes the resource transmission RI implicit in the PUCCH format 1/la/lb, thereby saving the physical resources of the PUCCH format 2/2a/2b; in addition, selecting the downlink subframe with the smallest value of m and the value The smallest m obtains a relatively small PUCCH logical resource index, thereby saving the physical resources used by the PUCCH format 1/la/lb; in addition, it is also compatible with the method of transmitting information on the PUCCH format 2a/2b in the prior art. DRAWINGS

1 is a schematic diagram of an LTE frame structure 2 (5 ms switching period); 2 is an uplink and downlink configuration table diagram of LTE frame structure 2; FIG. 4 is a schematic diagram of LTE TDD ACK/NACK bit generation;

Figure 5 is a PUCCH logical resource index map of LTE TDD uplink and downlink ratio 3 (M = 3, set K takes {7, 6, 11 });

6 is a schematic diagram of a set K of downlink subframes in which LTE TDD uplink subframes feed back ACK/NACK information;

FIG. 7 is a flowchart of a process for transmitting LTE TDD ACK/NACK and/or RI information according to an embodiment of the present invention;

FIG. 8 is a comparison diagram of PUCCH logical resources of LTE TDD uplink and downlink ratio 3 according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present invention. detailed description

The core of the present invention is: the UE selects the downlink subframe with the smallest value of m and the smallest value of m to obtain a relatively small PUCCH logical resource index, thereby saving the physical resources used by the PUCCH format 1/la/lb; The RI of the PUCCH format 1/la/lb implicit resource is transmitted, thereby saving the physical resources of the PUCCH format 2/2a/2b.

As shown in FIG. 7, it is a flowchart of the method of the present invention:

Step 100: The UE obtains a set K{kl, k2...km} of the current uplink subframe n according to the uplink-downlink ratio, where m is an index of the set K, which is less than or equal to M-1. Referring to FIG. 6, the upper and lower The relationship between the row ratio and the set K, where M is the number of elements in the set K, and the physical meaning is the maximum number of ACK/NACK information that the uplink subframe needs to feed back the downlink subframe; The base station notifies the UE by broadcasting;

At this time, the UE detects whether the downlink subframes occupy the PDCCH according to the obtained downlink subframes nk _m corresponding to the uplink subframe n ( PHYSICAL DOWNLINK CONTROL CHANNEL physical downlink control channel), and then step 200;

Step 200: For all the detected downlink subframes that occupy the PDCCH, the UE selects the downlink subframe with the smallest value of m, and obtains the CCE (control channel particle) of the downlink subframe with the smallest m value occupying the PDCCH. Control Channel Element ) index value n _CCE and the minimum value of m;

The UE also obtains the CCE aggregation degree L of the PDCCH occupied by the downlink subframe according to the situation that the downlink subframe occupies the PDCCH;

Obviously, the selection of the m value is a very significant difference between the present invention and the prior art, and the effect can be seen by the following step 400;

Step 300, the UE selects the symbol index value p of the PDCCH according to the n _CCE obtained in step 200 from the set {0, 1, 2, 3};

The selection of P is to satisfy the following conditions: the n _{CCE is} greater than or equal to the total number of CCEs of p symbols in the PDCCH, and is smaller than the total number of CCEs of p+1 symbols in the PDCCH N _p+1 ;

The location of the control symbol region in the PDCCH is determined by the step 300. Step 400: The minimum value of the m obtained by the UE according to step 100 and the n _CCE obtained in step 200, and the N _p and N _p obtained in step 300 ₊₁ , obtaining the PUCCH logical resource index

"PUCCH ·

In practice, the formula for the PUCCH logical resource index for transmitting ACK/NACK information can be calculated using the protocol:

n uccH = (Mml) x N _p + mxN _{p + l} + n _CCE + N _CCH where wfficcH ^ ^ station reserved for SR and semi-static ACK / NACK PUCCH logic resources, obtained by the RRC layer configuration of the base station; M is The number of elements in the set K, the physical meaning is that the uplink subframe needs to feed back the most number of downlink subframe ACK/NACK;

At the same time, step 400 can also obtain other available logical resources implied by the UE: "PUCCH +1 ... "PUCCH + L_ 1; At this time, the method of the present invention obtains a resource index "CCH significantly smaller" than the method specified by the existing protocol, and the method of the present invention will be described below with an application example.

The following downlink ratio 3 is used as an example. According to the CCE index of the downlink PDCCH, a logical resource map of PUCCH format 1/la/lb is drawn according to the value of each element in the formula. Referring to FIG. 8, the colorless frame indicates the nth- 7 subframe logical resources ( m = 0 ), black box indicates the n-6th subframe logical resource (m = 1), gray box indicates the n-11th subframe logical resource (m = 2), N _CCE , _p represents The number of CCEs when the PCFICH value is p.

The calculated "the CCH is closer to the back, the more _RB resources are occupied; for the uplink subframe n, it is assumed that the PDCCH is detected in the downlink subframes n-7, n-6, n-11, according to the current protocol method, The resource index of the ACK/NACK is fed back to the CCH; according to the method of the present invention, the resource index "^CCH, ..., UCCH+L-1 can be obtained, and the specific location refers to the identifier in Fig. 8. Obviously, the method obtains " The CCH is smaller than the value obtained by the existing protocol, and is closer to the left side of FIG. 8. At this time, there are few RB resources that need to be dynamically allocated to the PUCCH format 1/la/lb. It can be seen that the m-value selection method of the present proposal can reduce the use of RB resources by the PUCCH.

Step 500: Detect whether both RI information and ACK/NACK information are to be fed back in the uplink subframe n; if only ACK/NACK information exists, step 600 is performed; if RI information and ACK/NACK information exist at the same time, perform steps 700;

Step 600: When only the ACK/NACK information is fed back in the uplink subframe n, the UE selects the physical resource corresponding to the CCH determined in step 400, and the ACK/NACK information generated by the downlink subframe occupying the PDCCH is in the uplink The frame n is fed back to the base station by using the PUCCH, and the process ends. Step 700: Detecting whether the CCE aggregation degree L of the PDCCH occupying the smallest value of the minimum value of the m is greater than 1; if not greater than 1, performing step 800; if greater than 1, , then execute the step Step 800, jointly coding ACK/NACK and RI, and transmitting on PUCCH format 2a/2b;

Step 900: When the CCE aggregation degree L of the PDCCH is greater than 1, the UE selects the physical resource corresponding to the CCH to send the ACK/NACK information generated by the downlink subframe of the PDCCH to the base station, and selects any implicit logical resource. The physical resource corresponding to the index sends RI information to the base station;

In the service implementation, when the CCE aggregation degree L of the PDCCH is greater than 1, the calculation of ⁿ cc _E (the CCE starting position) in the ^^c/ formula is not continuous, and thus the calculated H is not continuous, implied. Logical resources of L PUCCH format la/lb;

The UE selects the physical resource corresponding to the CCH to send the ACK/NACK information generated by the downlink subframe of the PDCCH to the base station. At this time, the PUCCH format la/lb logical index has many unused, so the remaining "can be considered". CCH +I, ... , " CCH + L-1 logical resources to send RI;

The specific logical resource of the RI may be specified, so that the receiving end may demodulate according to the logical resource of the RI, and realize the transmission of the RI information between the UE and the base station:

1) in the logical resource "CCH sends an ACK/NACK of the downlink subframe occupying the PDCCH;

2) arbitrarily select one of the logical resources to transmit RI in "puccH +1, ... , "PUCCH + L-1: If the RI is transmitted in the logical resource "CCH +1, the base station receives the RI at CCH +1. If the RI is sent in the logical resource "CCH + 2, the base station receives the RI at CCH +1. If the RI is sent in the logical resource "CCH + L-1, the base station receives Ri at CCH +1.

It can be seen that the existing RI information transmission method is compared with the background art, and the present invention effectively utilizes the implicit PUCCH format 1/la/lb resource to transmit the RI, and saves the PUCCH format. 2/2a/2b resources.

It should be noted that the method for acquiring the implicit resource used in the RI information transmitting method of the present invention is not limited to being obtained by using the m minimum value.

In another embodiment, the resource is obtained by using the m value specified in the existing protocol to be the m value that minimizes k _m ( k _m ^ K ).

As shown in FIG. 9, the terminal for using the uplink subframe feedback acknowledgment/non-acknowledgment ACK/NACK information according to the present invention includes: an information organization module 10, a parameter detection module 20, a resource acquisition module 30, and a sending module 40;

The information organization module 10 is configured to obtain a number of k values according to the current uplink and downlink ratio, and determine that the downlink subframe nk _m notifies the parameter detecting module 20, where m is an index of several k values; receiving the parameter detection The PDCCH/NACK information generated by the downlink subframe of the PDCCH is notified to the sending module 40, and is also used by the parameter detecting module 20 to notify the RI information. The sending module 40;

The parameter detecting module 20 is configured to detect the occupancy of the physical downlink control channel PDCCH by the downlink subframe nk _m , notify the information organization module 10, and obtain the smallest value of m from the downlink subframe occupying the PDCCH. The downlink subframe occupies the index value n _CCE of the control channel particle CCE of the PDCCH, the degree of aggregation L of the CCE of the PDCCH, and the minimum value of m, and sends the value to the resource acquisition module 30; When it is greater than 1, the information organization module 10 and the sending module 40 are triggered;

The resource obtaining module 30 is configured to obtain, according to the index value n _CCE sent by the parameter detecting module 20 and the minimum value m, a physical uplink control channel PUCCH logical resource index that sends ACK/NACK information. CCH, the PUCCH logical resource index

The CCH notifies the sending module 40; and is further configured to use, according to the parameter detecting module 20, the minimum value of m, and the downlink subframe with the smallest m value to occupy the control channel particle CCE of the start of the PDCCH. The index value n _CCE and the degree of aggregation L of the CCE occupying the PDCCH, The PUCCH implicit logical resource index "PUCCH" PUCCH + L-1 and notifies the sending module 40; the sending module 40 selects the "CCH corresponding physical resource, and will occupy the ACK generated by the downlink subframe of the PDCCH. The NACK information is fed back to the base station by using the PUCCH on the uplink subframe n; and is also used by the parameter detection module 20 to select any implicit logical resource index "CCH + 1. . . The physical resource corresponding to PUCCH + L-1 sends RI information to the base station.

The specific operation and function of the terminal further includes the information organization module 10, and is further configured to select a symbol index value p of the PDCCH according to the n _CCE from the set {0, 1, 2, 3}, where the _{CCE is} greater than or equal to N _p and less than N _p+1 ; and N _p , N _p+1 and ? The ^llccH is sent to the resource obtaining module _{30. The} resource obtaining module 30 is based on the m, 1^^ and ? , ^PUCCH, and the N _p and Ν _ρ+1 , obtain the PUCCH logical resource index "CCH.

In addition, the parameter detecting module further notifies the information organization module when the degree of aggregation is not greater than 1, and the information organization module jointly encodes the ACK/NACK information and the RI information, and notifies the The transmitting module sends the information obtained by the joint encoding to the base station on the PUCCH format 2a/2b.

It can be seen that, when the logical resource index implied by the PUCCH is obtained, the parameter detecting module can obtain, from the downlink subframe occupying the PDCCH, the index value of the starting CCE occupying the PDCCH of the downlink subframe with the smallest value of m and the smallest value. And sending the resource acquisition module to the resource acquisition module; the resource acquisition module is configured to obtain the logical resource index implied by the PUCCH according to the smallest value, the index value, and the aggregation degree, and notify the sending module.

When the PUCCH logical resource index is obtained, the parameter detection module can obtain the smallest value m, the initial CCE index value, the total number of CCEs of the p symbols in the PDCCH, and p+1 times from the downlink subframe occupying the PDCCH. The total number of CCEs of symbols and M and

And sent to the resource acquisition module; the resource acquisition module can be based on the smallest value of m, the index of the starting CCE The value, the total number of CCEs of p symbols in the PDCCH, the total number of CCEs of p+1 symbols, and M and wfficcH, acquire the PUCCH logical resource index and notify the sending module.

It corresponds to the operation flow of the foregoing method, and the insufficiency refers to the description of the above method part, and is not described here.

It should be noted that the manner of acquiring the implicit resource used by the RI information transmitting apparatus of the present invention is not limited to being obtained by using the m minimum value.

The above description shows and describes a preferred embodiment of the present invention, but as described above, it should be understood that the present invention is not limited to the forms disclosed herein, and should not be construed as Other combinations, modifications, and environments are possible and can be modified by the teachings or related art or knowledge within the scope of the inventive concept described herein. The modifications and variations made by those skilled in the art are intended to be within the scope of the appended claims.

Claims

Claim

A method for indicating RI information by using an uplink subframe feedback rank, wherein the method includes:

The user equipment UE obtains the set K containing the k value according to the current uplink-downlink ratio, and detects whether the downlink subframe nk _m occupies the aggregation degree of the physical downlink control channel PDCCH and the control channel particle CCE occupying the PDCCH, where m is the set K An index of the logical resource implied by the physical uplink control channel PUCCH is obtained according to the downlink subframe that occupies the PDCCH and the aggregation degree of the CCE;

2. The method according to claim 1, wherein the process of obtaining the implicit logical resource index comprises:

3. The method of claim 2, wherein the process of obtaining the PUCCH logical resource index comprises:

Obtaining the PUCCH logical resource index;

The ^liccH is a PUCCH logical resource reserved by the base station to the scheduling request information and the semi-static ACK/NACK, which is obtained by the radio resource control protocol layer configuration of the base station; The number of elements in K.

The method according to claim 3, wherein: according to the minimum value of m, an index value of the starting CCE, a total number of CCEs of p symbols in the PDCCH, and p+1 The total number of CCEs for the symbol, and M and

The method for obtaining the PUCCH logical resource index is:

n uccH = (M - m - l) x N _p + mx N _p+l + n _CCE + N _CCH .

The method according to claim 3, wherein the method further comprises: the UE selecting a symbol index value of the PDCCH from the set {0, 1, 2, 3} according to the index value of the starting CCE. .

The method according to any one of claims 3 to 5, further comprising: the index value of the initial CCE is greater than or equal to the total number of CCEs of p symbols in the PDCCH, and is smaller than the PDCCH. The total number of CCEs with +1 symbols is Np+1.

The parameter detecting module is configured to detect the occupancy of the PDCCH by the downlink subframe nk _m , and obtain the aggregation degree of the CCE of the PDCCH from the downlink subframe that occupies the PDCCH, and send the aggregation degree to the resource acquiring module; Up to the degree of polymerization being greater than 1, triggering the information organization module and the sending module;

The sending module is triggered by the parameter detecting module, and is configured to select, according to any one of the PUCCH implied logical resource indexes provided by the resource acquiring module, a physical resource corresponding to the physical resource in the uplink sub-sub The RI information is transmitted to the base station through the PUCCH on the frame n.

The terminal according to claim 7, wherein when the index of the logical resource implied by the PUCCH is obtained,

The parameter detecting module is configured to obtain a value of m from a downlink subframe that occupies the PDCCH and send the value to the resource acquiring module.

9. The terminal of claim 8 wherein:

The terminal according to any one of claims 7 to 10, wherein when the PUCCH logical resource index is obtained,

The parameter detecting module is configured to obtain, from the downlink subframe that occupies the PDCCH, the smallest value of m, the index value of the starting CCE, the total number of CCEs of the p symbols in the PDCCH, and p+1 a total number of CCEs of the symbol, and M and ^llccH, and sent to the resource obtaining module; the resource obtaining module, configured to: according to the minimum value of m, the index value of the starting CCE, the The total number of CCEs of p symbols and the total number of CCEs of p+1 symbols in the PDCCH, and M and wfficcH, acquire the PUCCH logical resource index, and notify the sending module.