WO2011116687A1

WO2011116687A1 - Method and device for resource scheduling of feedback information

Info

Publication number: WO2011116687A1
Application number: PCT/CN2011/072054
Authority: WO
Inventors: 赵锐; 沈祖康; 潘学明
Original assignee: 电信科学技术研究院
Priority date: 2010-03-22
Filing date: 2011-03-22
Publication date: 2011-09-29
Also published as: CN102088776B; CN102088776A

Abstract

A method and device for resource scheduling of feedback information are provided in the invention. The method includes that: after a terminal receives Uplink Semi-Persistence State (UL SPS) scheduling information transmitted on the current Downlink Component Carrier (DL CC) by a base station, the terminal transmits the UL SPS Physical Uplink Shared Channel (PUSCH) on the Uplink Primary Component Carrier (UL Primary CC) according to the transmission attribution indicated in the UL SPS scheduling information, and if the Carrier Indicating Field (CIF) of the current DL CC is available, a Demodulated Reference Signal (DMRS) is determined according to a Demodulation Reference Signal Cyclic Shift (DMRS CS) value indicated by the CIF information field or according to a DMRS CS value indicated by the DMRS CS information field; the terminal monitors the corresponding Physical hybrid-ARQ Indicator Channel (PHICH) on the downlink ACK/NAK feedback sub-frame corresponding to the UL SPS PUSCH, and the PHICH channel resource is calculated according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value. According to the technical solution provided in the invention, the resource mapping method about PHICH in the existing Long Term Evolution (LTE) R8 release is not changed, and the reliability of Physical Downlink Control Channel (PDCCH) of the UL SPS scheduling is not influenced, at the same time the conflict of PHICH resources during UL SPS transmission can be efficiently avoided.

Description

Method and device for resource scheduling of feedback information The present application claims to be submitted to the Chinese Patent Office on March 22, 2010, the application number is 201010130959.9, and the Chinese patent entitled "Method and Equipment for Resource Scheduling of Feedback Information" The priority of the application, the entire contents of which is incorporated herein by reference. Technical field

The present invention relates to the field of mobile communications, and in particular, to a method and device for resource scheduling of feedback information. Background technique

Mobile and broadband have become the development direction of modern communication technologies. 3GPP (3rd Generation Partnership Project) is committed to the evolution of 3G systems, and is evolving toward high data rate, low latency and optimized packet data applications. 3GPP in LTE (Long Term Evolution, Long Term Evolution) and LTE-A (Long Term Evolution-Advanced) systems, feedback information ACK (Acknowledge Character) for PUS CH (Physical Uplink Shared Channel) The transmission of the positive character /NACK (Negative Acknowledgment, Negative Character) is performed by the PHICH (Physical Hybrid-ARQ Indicator Channel). Generally, the PHICH resource is indicated by a parameter pair ( ^np8 ^ ^H , ⁿ ^ ^ICH ), ⁿ °i ^U c ^P H is the number of the PHICH group, and ^{n ICH} is the index of the orthogonal sequence. These two parameters can be passed. The resource allocation information in the scheduling information of the PUSCH and the set information of the DMRS (Demodulation Reference Signal) sequence are calculated.

The definition of PHICH in the LTE system is introduced below. PHICH is used to carry Feedback information of the line service ACK/NACK, resource indication of the PHICH channel through parameter pair

The transmission of the PHICH channel is transmitted in a frequency division + code division manner.

The PHICH group concept refers to a set of RE (Resource Element), in which multiple PHICH channels can be transmitted, and each PHICH channel is distinguished by an orthogonal sequence. For a regular CP (Cyclic Prefix), there are 8 orthogonal sequences, then there are 8 PHICH channels in one PHICH group; for an extended CP, there are 4 orthogonal sequences, then there are 4 in a PHICH group. PHICH channel.

For the FDD (Frequency Division Duplex) system, that is, the frame structure type 1, the position of the PHICH in all subframes is fixed, and is given by the following expression:

N g ^rou P

PHICH

(1), N _g e {l/ ⁶ , l / ² , l, ² } in the formula is provided by the upper layer, and the index H is numbered from 0 to Νρ ^Ρ _Η - ¹ .

For a TDD (Time Division Duplexing) system, that is, frame structure type 2, the number of PHICH groups may be different in each downlink subframe, and is given by "Np^, given by Table 1, ^NU C ^P H is calculated by the expression (1) given in the frame structure type i, and the number of the index is from 0 to ' ^N TM -!.

Table 1: Definition of factors in frame structure type 2

3 1 0 - - - 0 0 0 1 1

4 0 0 - - 0 0 0 0 1 1

5 0 0 - 0 0 0 0 0 1 0

6 1 1 - - - 1 1 - - 1

When the UE (User Equipment) sends uplink data on the PUSCH, its feedback information ACK/NACK is carried in the PHICH in the downlink subframe. For the PUSCH transmission scheduled in subframe n, its ACK/NACK feedback information is transmitted in the corresponding PHICH resource in the subframe ^{N + K} PH _ICH , where the FDD system ^K PH _ICH = ⁴ , for the TDD system ^kpHICH through Table 2 Given.

Table 2 Η Η configuration of TDD system

The resource of the PHICH channel is the lowest PRB (Physical Resource Block) number in the PUSCH resource indicated by the PUSCH scheduling information in the DCI (downlink control information) format 0 of the PDCCH, and the cyclic shift of the uplink DMRS indicated by 3 bits. The position is decided together.

In addition, the PHICH resource is indicated by a parameter pair ^HMU, and the specific calculation formula of these two parameters is: _n gr _OU p ₌ j lowest _index ^ Tnod N ⁸ " ⁰ " ¹ ' + T ^ ⁸ "

Nseq ₌ c| 1 st— index _{/ N} group I Λ _mQ A 2M ^PHICH

HpfflGH LipRB ' i (2) n _DMRS is an index value of a DMRS cyclic shift sequence used in uplink transmission corresponding to PHICH, and is mapped by bit information in the DMRS field in DCI format 0, and the specific τ lowest _ index is as shown in Table 4. ⁿ is the spreading factor size of PHICH modulation; is the lowest PRB sequence number for uplink PUSCH transmission; ^!^ is the number of PHICH groups configured by higher layer signaling; when TDD UL/DL (Uplink/Downlink, uplink/downlink) When the configuration is 0 mode and the PUSCH is carried in subframe 4 or 9, the ^IpHICH is 1, otherwise it is 0, and the TDD UL/DL configuration mode is as shown in Table 3.

Table 3 TDD uplink and downlink configuration

In the table 3, D represents the downlink, U represents the uplink, and S represents the special subframe. Table 4 DMRS bit mapping domain in DCI format 0 ⁿ DMRs and

DCI format 0 DMRS CS

(Cyclic Shift, cyclic shift)

000 0 001 1

010 2

Oil 3

100 4

101 5

110 6

111 7

In the above formula, the specific relationship between ⁿ _ICH and Νέ^ ^η is shown in Table 5 ₍ Table 5 PHICH spreading sequence k ⁰⁾

However, in consideration of a scenario where multiple users exist simultaneously, there may be a conflict of resources of each user's PHICH. For example, for an LTE system, with a bandwidth of 20MHz and 100PRB, Ng = 1 , in the case of a regular CP, if there are 4

j lowest— index

User, 4 users' iTM- ¹ ^ and ⁿ DMRS values are shown in Table 6. According to the calculation rules of the existing system, the PHICH resources of all four users are (1, 1), so PHICH resources will occur. Conflict. Table 6 Examples of PHICH resource conflicts

For the LTE-A system, in order to support a wider system bandwidth than the LTE system, such as 100 MHz, it is necessary to connect multiple LTE carriers (also referred to as component carriers). The concept of a Primary Component Carrier (Primary Component Carrier) is introduced in the LTE-A system. Each user needs to configure one DL Primary CC and one UL Primary CC. At the same time, it is determined that one UE has at most one UL SPS (Semi-Persistent Scheduling) transmission and one DL SPS transmission.

For the problem of PHICH resource conflict, the main consideration is that in the case of UL SPS transmission, the CS (Cyclic Shift) of the DMRS transmitted by the UL SPS defined in the current LTE is 0, and the PHICH cannot be performed by the DMRS CS scheduling. Avoidance of resource conflicts. If the definition in the existing LTE is used in LTE-A, when one DL CC schedules the UL SPS of two UEs, if the two UL SPSs are located in different UL CCs, the same lowest _ index

When 1⁄2RB_RA is o, then PHICH resources will conflict. Summary of the invention

The embodiments of the present invention provide a method and a device for resource scheduling of feedback information, so as to solve the problem of ACK/NACK resource conflict of PUSCH in the case of uplink SPS transmission in the system, rationally allocate PHICH resources, and optimize system performance.

In order to achieve the above object, an aspect of the present invention provides a method for resource scheduling of feedback information, including the following steps:

After the terminal receives the UL SPS scheduling information in the current DL CC sent by the base station, the The terminal transmits the UL SPS PUSCH according to the transmission attribute indicated in the UL SPS scheduling information on the UL Primary CC, and if the carrier indication domain CIF of the current DL CC is available, the DMRS signal is determined according to the DMRS CS value indicated by the CIF information field or according to the DMRS CS information. The DMRS CS value indicated by the domain is determined;

The terminal monitors its corresponding PHICH channel in the downlink ACK/NAK feedback subframe corresponding to the UL SPS PUSCH, and the PHICH channel resource is calculated according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value. .

Another aspect of the present invention also provides a method for resource scheduling of feedback information, including the following steps:

The base station sends information to the terminal, and the terminal is scheduled to perform UL SPS transmission; the base station sends ACK/NAK feedback information of the UL SPS PUSCH to the terminal on the corresponding PHICH channel resource, and the PHICH channel resource is according to the UL SPS scheduling information. The resource indication information field and the corresponding DMRS CS value calculation, if the terminal indicates that the current DL CC carrier indication field CIF is available, the DMRS signal is determined according to the DMRS CS value indicated by the CIF information field or according to the DMRS CS information. The DMRS CS value indicated by the field is determined.

Another aspect of the present invention also provides a terminal, including a receiving module, a computing module, and a sending module.

The receiving module is configured to receive UL SPS scheduling information in a current DL CC sent by the base station;

The sending module is configured to transmit, according to the transmission attribute indicated in the UL SPS scheduling information, the UL SPS PUSCH on the UL Primary CC, and if the carrier indication domain CIF of the current DL CC is available, the DMRS signal according to the DMRS CS value indicated by the CIF information field Determine or determine based on the DMRS CS value indicated by the DMRS CS information field;

The calculating module is configured to calculate a corresponding PHICH channel resource, where the PHICH The channel resource is calculated according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value, and the receiving module monitors the ACK/NAK feedback subframe of the UL SPS PUSCH in the PHICH channel resource.

Another aspect of the present invention also provides a base station, including a transmitting module, a resource allocation module, and a receiving module.

The sending module is configured to send information to the terminal, and schedule the terminal to perform UL SPS transmission;

The receiving module is configured to receive a UL SPS PUSCH that is transmitted by the terminal on a UL Primary CC according to a transmission attribute indicated in the UL SPS scheduling information;

The resource allocation module is configured to allocate a corresponding PHICH channel resource to the terminal, and the sending module sends, to the terminal, ACK/NAK feedback information of the UL SPS PUSCH, the PHICH channel resource, on the PHICH channel resource. Calculating, according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value, if the carrier indication domain CIF of the current DL CC of the terminal is available, the DMRS signal is determined according to the DMRS CS value indicated by the CIF information field. Or determined according to the DMRS CS value indicated by the DMRS CS information field.

According to the technical solution proposed by the present invention, the problem of ACK/NACK resource conflict of PUSCH in the case of uplink SPS transmission in the system is solved, and the PHICH resources can be allocated reasonably to optimize system performance. The PHICH resource mapping method in the existing LTE R8 version is not changed, and the reliability of the PDCCH for the UL SPS scheduling in the R8 is not affected, and the PHICH resource conflict of the UL SPS transmission can be effectively avoided. In addition, the changes to the existing system are small, do not affect the compatibility of the system, and achieve a single, efficient.

The additional aspects and advantages of the invention will be set forth in part in the description which follows. DRAWINGS Figure 1 is a schematic diagram of a CIF indication;

Figure 2 is a schematic diagram of PHICH resource reservation;

3 is a flowchart of a method for resource scheduling of feedback information according to an embodiment of the present invention; FIG. 4 is a flowchart of a method for resource scheduling of feedback information according to another embodiment of the present invention; FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

6 is a schematic structural diagram of a base station according to an embodiment of the present invention;

7 is a schematic diagram of a PDCCH indicating a PUSCH;

FIG. 8 is a schematic diagram of another PDCCH indicating a PUSCH. detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In order to facilitate the understanding of the present invention, the related background in LTE-A is first introduced. The current conclusions about PDCCH control include: PDCCH needs to support cross-carrier scheduling; cross-carrier scheduling is implemented by adding a 3-bit CIF (Carrier Indicator Field) information field to the DCI; whether the CIF information field is present is based on the UE. And based on the component carrier configuration; the DCI without the CIF information field can only schedule the PDSCH of the local carrier or the PUSCH in the uplink component carrier associated with the downlink component carrier.

A detailed description of the CIF is shown in FIG. 1 : the system is configured with three uplink component carriers and three downlink component carriers, and UL CC1 and DL CC1, UL CC2 and DL CC2, and UL CC3 and DL CC3 respectively have a Cell-specific association. Relationship, as shown in FIG. 1, one user configures DL CC1 and DL CC2 as its PDCCH CC, DL CC1 can only schedule DL CC1 and UL CC1, and DL CC2 can schedule DL CC2, DL CC3, ULCC2, and ULCC3. For current users, DL CC1 does not support cross-component carriers. Scheduling, no CIF information field, not a CIF enable member carrier, DL CC2 needs to support cross-component carrier scheduling, and DL CC2 is a CIF enable component carrier.

Currently, in the discussion of LTE-A, it has been determined that the PHICH transmission is the same as the CC transmitting the uplink scheduling information. As shown in FIG. 2, the DL CC1 schedules the PUSCH transmission of the UL CC2, and the ACK/NACK feedback for the PUSCH on the UL CC2 is The PHICH resource is reserved in the PHICH resource of the DL CC1. The mode of the PHICH resource reservation is the same as that of the LTE. The DMRS CS scheduling mode in the existing LTE is reserved for the PHICH resource conflict processing.

Therefore, the concept of introducing a Primary CC in the LTE-A system has been determined. Each user needs to configure one DL primary CC and one UL primary CC, and it is determined that one UE has at most one UL SPS transmission and one DL SPS transmission.

Lowest— index

For the PHICH resource conflict problem, if ^TM-^ is 0, the PHICH resources will collide. Currently, there are three main solutions for this situation: Method 1: Perform PHICH by scheduling the PRB resources occupied by the UL SPS. The avoidance of resource conflicts, this method will affect the flexibility of UL SPS scheduling to a certain extent;

Method 2: In the case of carrier aggregation, by connecting the PRB numbers of the component carriers, for example: CC1 has 100 PRBs, CC2 has 100 PRBs, and the original PRB numbers are independent numbers of each component carrier, which are respectively 0. ~ 99, If the carrier numbers are connected, the PRB number of CC1 is 0 ~ 99, and the PRB number of CC2 is 100 ~ 199. It can be seen from equation (2) that this method only changes the location of the resource number of the PHICH conflict. It is not effective to avoid PRB resources;

Method 3: Change the definition of UL SPS scheduling information in the existing LTE, so that the DMRS CS may not be 0, which may also implement PHICH resource conflict avoidance, but may make LTE and LTE-A incompatible, and affect UL SPS. The reliability of scheduling information.

The present invention proposes a solution to the above problem, and does not change the PHICH resource mapping method in the existing LTE R8 version, and does not affect the UL SPS scheduling in the R8. The reliability of the PDCCH can effectively avoid the conflict of PHICH resources during UL SPS transmission. The core idea is:

A UL SPS transmission that restricts one UE can only be transmitted on its UL primary CC. Considering that the UE has only one UL SPS transmission and one DL SPS transmission at the same time, and the UE needs to guarantee a pair of DL/UL primary CCs in the connected state, limiting the UL SPS transmission of one UE can only be transmitted on its UL primary CC, not because The change in the PUSCH CC set affects the transmission configuration of the UL SPS.

If the current DL CC used by the UE to schedule UL SPS transmission is CIF enable, the following operations are performed:

Mode A: The 3-bit CIF information field in its UL SPS scheduling information is used to indicate the DMRS CS transmitted by the current UL SPS, thereby avoiding PHICH resource conflicts.

Specifically, since the user knows its UL Primary CC, the component carrier number indicated by the CIF information field in the UL SPS scheduling information is repeated or inactive information, and the indication of the DMRS CS is also 3-bit information, so the user can be reused. The 3-bit CIF indicates the DMRS CS of the current UL SPS transmission.

Mode B: The 3-bit CIF information field in the UL SPS scheduling information is set to a fixed value, for example: "111", as the detection condition of the UL SPS scheduling information, the original DMRS CS indication information in its UL SPS scheduling information The field can be fixed to "000". The value of DMRS CS is variable and does not need to be fixed to "000".

Therefore, on the terminal side: if the mode is A, the terminal receives the UL SPS scheduling information scrambled by the SPS-RNTI (Radio Network Temporary Identity) in the current DL CC, if the current DL CC is CIF enable Then, the UE transmits the UL SPS PUSCH according to the transmission attribute indicated in the UL SPS scheduling information on the UL Primary CC, and the transmission attribute includes resource indication information, a modulation mode, and the like, and the DMRS signal is determined according to the DMRS CS indication in the CIF information field. The terminal monitors the corresponding PHICH channel in the ACK/NAK feedback subframe for the UL SPS PUSCH, and the PHICH channel resource needs to be calculated according to the resource indication information field in the UL SPS scheduling information and the DMRS CS information indicated in the CIF information field. According to the calculation method in Equation 2, the value of ^ is the value of DMRS CS indicated according to the CIF information field.

If it is mode B, after the terminal receives the SPS-RNTI scrambled UL SPS scheduling information in the current DL CC, if the current DL CC is CIF enable, the UE is indicated on the UL primary CC according to the UL SPS scheduling information. The transmission attribute transmits UL SPS PUSCH, and the transmission attribute includes resource indication information, modulation mode, and the like, and its DMRS signal is determined according to the DMRS CS indication in the DMRS CS information field.

The terminal monitors the corresponding PHICH channel in the subsequent ACK/NAK feedback subframe for the UL SPS PUSCH, and the PHICH channel resource needs to be calculated according to the resource indication information field in the UL SPS scheduling information and the DMRS CS information indicated in the DMRS CS information field. According to the calculation method in Formula 2, where the CIF information field has a fixed value, for example: "111", the detection of the PDCCH for the UL SPS scheduling information.

On the base station side: If the mode is A, when the base station side is scheduling the UL SPS transmission of the UE, if the DL CC used by the current UE for scheduling the UL SPS is CIF enable, the CIF information field in the current UL SPS scheduling information is used to indicate The DMRS CS of the UL SPSPUSCH, the base station calculates the PHICH resource in the ACK/NACK feedback subframe for the current UL SPS PUSCH according to the resource indication information field in the current UL SPS scheduling information and the DMRS CS information indicated in the CIF information field, according to In the calculation method in Equation 2, the value of n _{DMRS is} the value of DMRS CS indicated according to the CIF information field. The specific value of the DMRS CS indicated in the CIF information field needs to consider the PHICH resource conflict avoidance.

If it is mode B, when the base station side is scheduling the UL SPS transmission of the UE, if the current DL CC used by the UE for scheduling the UL SPS is CIF enable, the current UL SPS tone The CIF information field in the degree information is set to a fixed value, for example: "111", and its DMRS CS information field is used to indicate the DMRS CS of the UL SPSPUSCH, and the base station indicates the information field and the DMRS CS according to the resource in the current UL SPS scheduling information. The DMRS CS information indicated in the information field calculates the PHICH resource in the ACK/NACK feedback subframe for the current UL SPS PUSCH, according to the calculation method in Equation 2. The specific value of the DMRS CS indicated in the DMRS information field needs to consider the PHICH resource conflict avoidance.

As shown in FIG. 3, a flow chart of a method for resource scheduling of feedback information according to an embodiment of the present invention includes the following steps:

S110: After receiving the UL SPS scheduling information, the terminal transmits the UL SPS PUSCH on the UL Primary CC.

In step S110, after the terminal receives the UL SPS scheduling information in the current DL CC sent by the base station, the terminal transmits the UL SPS PUSCH according to the transmission attribute indicated in the UL SPS scheduling information on the UL Primary CC, if the carrier indication domain of the current DL CC When CIF is available, the DMRS signal is determined based on the DMRS CS value indicated by the CIF information field or based on the DMRS CS value indicated by the DMRS CS information field.

S120: The terminal listens to the corresponding PHICH channel in the downlink ACK/NAK feedback subframe corresponding to the UL SPS PUSCH.

In step S120, the terminal monitors its corresponding PHICH channel in the downlink ACK/NAK feedback subframe corresponding to the UL SPS PUSCH, and the PHICH channel resource is calculated according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value.

Specifically, the PHICH channel resource is calculated according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value. If the CIF of the current DL CC of the terminal is available, the DMRS cyclic shift value indication used in the uplink transmission corresponding to the PHICH is specified. Ways include:

When the DMRS signal is determined according to the DMRS CS indication in the CIF information field, PHICH The DMRS cyclic shift value ⁿ DMRs used in the corresponding uplink transmission is a DMRS CS value indicated according to the CIF information field; or

When the DMRS signal is determined according to the DMRS CS value indicated by the DMRS CS information field, the DMRS cyclic shift value used in the uplink transmission corresponding to the PHICH is a DMRS CS value indicated by the DMRS CS information field, and the CIF information field is a fixed value. Used for detection of UL SPS scheduling information PDCCH.

Specifically, the PHICH channel resource calculation includes: the PHICH channel resource is indicated by a parameter history, ^PHICH, ^N PHICH ),

Group = T lowest .index \肠d Μ ^ ^οι1 Ρ + Τ Μ ^ ⁰¹¹ Ρ

¹¹ PHICH ― V ^A PRB_RA ^D RS ) ^A _PH ICH PHICH

Seq 1 J 1 st— index _{/ N} group | \动d d ^PHICH

PHICH V|_ ^A PRB_RA 'PHICH DMRS ) SF where ^{N eH} is the spreading factor size of PHICH modulation, Nf^H is the number of PHICH groups configured by higher layer signaling, when TDD UL/DL is configured to 0 mode and PUSCH is child

_TT

^mcH is 1 when frame 4 or 9 is carried, 0 otherwise.

J means right

As shown in FIG. 4, a flowchart of a method for resource scheduling of feedback information according to another embodiment of the present invention includes the following steps:

S210: The base station sends information to the terminal, and schedules the UL SPS transmission.

S220: The base station sends the ACK/NAK feedback information of the UL SPS PUSCH to the terminal on the corresponding PHICH channel resource.

In step S220, the base station sends the ACK/NAK feedback information of the UL SPS PUSCH to the terminal on the corresponding PHICH channel resource, and the PHICH channel resource is calculated according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value, if the terminal When the carrier indication field CIF of the current DL CC is available, the DMRS signal is determined according to the DMRS CS value indicated by the CIF information field or according to the DMRS CS value indicated by the DMRS CS information field. Specifically, PHICH channel resource according to the resource indication information fields UL SPS scheduling information and the corresponding DMRS CS value calculation, if the terminal is currently CIF available for the DL CC, the DMRS cyclic uplink transmission which PHICH corresponding use shift value ⁿ ^Instructions include:

When the DMRS signal is determined according to the DMRS CS indication in the CIF information field, the DMRS cyclic shift value ⁿ DMRs used in the uplink transmission corresponding to the PHICH is the DMRS CS value indicated according to the CIF information field;

Specifically, the PHICH channel resource calculation includes: the PHICH channel resource is indicated by a parameter history, ^PHICH, ^N PHICH,

= T \肠d ΚΓ^ ^01ΐρ + Τ ^° ^υρ

¹¹ PHICH ― V ^A PRB_RA ^D RS ) ^A _PH ICH PHICH

J 1 \动d d

PHICH V|_ ^A PRB_RA 'PHICH DMRS ) SF where ^{N eH} is the spreading factor size of PHICH modulation, which is the number of PHICH groups configured by higher layer signaling, when TDD UL/DL is configured to 0 mode and PUSCH is in subframe 4 Or when 9 is carried,

J means right

I

丄PRB—RA ¹丄, PHICH down ^L.

Corresponding to the above method, as shown in FIG. 5, the present invention further provides a terminal 100, including a receiving module 110, a calculating module 120, and a transmitting module 130.

The receiving module 110 is configured to receive the UL SPS scheduling information in the current DL CC sent by the base station.

The sending module 130 is configured to transmit the UL SPS PUSCH according to the transmission attribute indicated in the UL SPS scheduling information on the UL Primary CC, if the carrier indication of the current DL CC When the domain CIF is available, the DMRS signal is determined according to the DMRS CS value indicated by the CIF information field or according to the DMRS CS value indicated by the DMRS CS information field.

The calculation module 120 is configured to calculate a corresponding PHICH channel resource, where the PHICH channel resource is calculated according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value, and the ACK/NAK feedback of the PHICH channel resource to the UL SPS PUSCH by the receiving module 110. The subframe is monitored.

Specifically, the calculation module 120 calculates the PHICH channel resource according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value, and if the CIF of the current DL CC of the terminal is available, the DMRS cyclic shift used in the uplink transmission corresponding to the PHICH The bit value ^N DMRS indication method includes:

Specifically, the calculation module 120 calculates the PHICH channel resource, including: the PHICH channel resource is indicated by a parameter pair “Η^^ΙΟΗ”,

n roup ₌ J lowest _index ^ mod N ^grOUP + T ^8Γ∞Ρ

Nseq ₌ c| T 1 st — index _{/ N} group I Λ _mQ A 2M ^PHICH

I ^L PHICH , |_ΐ ^ρκΒ — PHICH JT UDMRS ^111UU SF where Ν ⁰¹ is the spreading factor size of PHICH modulation, which is the number of PHICH groups configured by higher layer signaling, when TDD UL/DL is configured to 0 mode and PUSCH is in the sub

_TT

^mcH is 1 when frame 4 or 9 is carried, 0 otherwise.

Indicates to lowerest_index / group

1⁄2RB— RA ' ^1X1 PHICH down Corresponding to the above method, as shown in FIG. 6, the present invention further provides a base station 200, including a sending module 210, a resource allocating module 220, and a receiving module 230.

The sending module 210 is configured to send information to the terminal, and the scheduling terminal performs UL SPS transmission. The receiving module 230 is configured to receive the UL SPS PUSCH transmitted by the terminal on the UL Primary CC according to the transmission attribute indicated in the UL SPS scheduling information.

The resource allocation module 220 is configured to allocate a corresponding PHICH channel resource to the terminal, and the sending module 210 sends the ACK/NAK feedback information of the UL SPS PUSCH to the terminal on the PHICH channel resource, where the PHICH channel resource is based on the resource indication information field in the UL SPS scheduling information. And corresponding DMRS CS value calculation, if the terminal indication domain CIF of the current DL CC of the terminal is available, the DMRS signal is determined according to the DMRS CS value indicated by the CIF information field or according to the DMRS CS value indicated by the DMRS CS information field.

Specifically, the resource allocation module 220 calculates the PHICH channel resource according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value, and if the CIF of the current DL CC of the terminal is available, the DMRS loop used in the uplink transmission corresponding to the PHICH The shift value ⁿ DMRs indication method includes:

Specifically, the resource allocation module 220 calculates the PHICH channel resource, including: the PHICH channel resource is indicated by a parameter pair «c ^ _H ^q _ICH ), _n gr _OU p ₌ j lowest _index ^TnodN ⁸ " ⁰ " ¹ ' +T ^ ⁸ "

Nseq ₌ c| 1 st— index _{/ N} group Λ _mQ A 2M ^PHICH

i ^l PHICH , — ' PfflCH j TUDMRS ^111UU SF where Ν ⁰¹ is the spreading factor size of PHICH modulation, ^Ν ° ί _Η is the number of PHICH groups configured by higher layer signaling, when TDD UL/DL is configured to 0 mode and PUSCH is in the child

_TT

^mcH is 1 when frame 4 or 9 is carried, 0 otherwise.

Express

I lowest— index / - τ group

丄PRB—RA ¹丄, PHICH down J^L.

The following further clarifies the present invention. As shown in FIG. 7, if the UL primary CCs of the two UEs are the same, both are UL CC1, and the UL SPS PUSCH is indicated by the PDCCH in the DL CC1, and is enabled according to the UE1 and the UE2 for the DL CC1. Or the analysis is given in the case of disable, as described in the following table:

As shown in FIG. 8, if the UL primary CCs of the two UEs are different, respectively, the UL CC1 and the UL CC2, and the UL SPS PUSCHs are all indicated by the PDCCH in the DL CC1, according to the association relationship of the cell-specific DL/UL CCs. The CIF of UE 2 in DL CC1 must be enable, as shown in the following table:

For avoiding conflict avoidance of PHICH for PHICH collision avoidance by indicating DMRS CS, indicating DMRS CS

CIF disable N/A N/A

Among them, N/A means that this will not happen.

According to the technical solution proposed by the present invention, the problem of ACK/NACK resource conflict of PUSCH in the case of uplink SPS transmission in the system is solved, and the PHICH resources are rationally allocated to optimize system performance. The PHICH resource mapping method in the existing LTE R8 version is not changed, and the reliability of the PDCCH for the UL SPS scheduling in the R8 is not affected, and the PHICH resource conflict of the UL SPS transmission can be effectively avoided. In addition, the changes to the existing system are small, do not affect the compatibility of the system, and achieve a single, efficient.

A person skilled in the art can understand that all or part of the steps carried by the method of the foregoing embodiment can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. , including one or a combination of the steps of the method embodiments.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. The integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.

The above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Claims

Rights request

A method for resource scheduling of feedback information, comprising the steps of:

After the terminal receives the UL SPS scheduling information in the current DL CC sent by the base station, the terminal transmits the UL SPS PUSCH according to the transmission attribute indicated in the UL SPS scheduling information on the UL Primary CC, if the current DL CC carrier indicates that the domain CIF is available. The DMRS signal is determined according to the DMRS CS value indicated by the CIF information field or determined according to the DMRS CS value indicated by the DMRS CS information field;

The method according to claim 1, wherein the PHICH channel resource is calculated according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value, if the CIF of the current DL CC of the terminal is available. The indication of the DMRS cyclic shift value ⁿ DMRs used in the uplink transmission corresponding to the PHICH includes:

When the DMRS signal is determined according to the DMRS CS indication in the CIF information field, the DMRS cyclic shift value ⁿ DMRs used in the uplink transmission corresponding to the PHICH is a DMRS CS value indicated according to the CIF information field; or

When the DMRS signal is determined according to the DMRS CS value indicated by the DMRS CS information field, the DMRS cyclic shift value used in the uplink transmission corresponding to the PHICH is a DMRS CS value indicated by the DMRS CS information field, and the CIF information field is fixed. Value, used for detection of UL SPS scheduling information PDCCH.

3. The method according to claim 2, wherein the PHICH channel resource calculation comprises:

The PHICH channel resource is indicated by a parameter to the HKU,

Ngroup _ J lowest _index ^modN ⁸ "TM ¹ ' + T ]^

Nseq ₌ I 1 st— index _{/ N} group I , \ _mQ A 2M ^PHICH

_TT

When frame 4 or 9 is carried, mcH is 1, otherwise 0.

Express

T lowest—index / - τ group

丄PRB—RA ^{1 1X1} PHICH is down to J^L.

The base station sends information to the terminal, and the terminal is scheduled to perform ULSPS transmission; the base station sends ACK/NAK feedback information of the UL SPS PUSCH to the terminal on the corresponding PHICH channel resource, where the PHICH channel resource is according to the UL SPS scheduling information. And the DMRS CS value is calculated according to the DMRS CS value indicated by the CIF information field or according to the DMRS CS information field. The indicated DMRS CS value is determined.

The method according to claim 4, wherein the PHICH channel resource is calculated according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value, if the CIF of the current DL CC of the terminal is available. The indication of the DMRS cyclic shift value ⁿ DMRs used in the uplink transmission corresponding to the PHICH includes: When the DMRS signal is determined according to the DMRS CS indication in the CIF information field, the DMRS cyclic shift value ⁿ DMRs used in the uplink transmission corresponding to the PHICH is a DMRS CS value indicated according to the CIF information field; or when the DMRS signal is according to the DMRS When the DMRS CS value indicated by the CS information field is determined, the DMRS cyclic shift value used in the uplink transmission corresponding to the PHICH is the DMRS CS value indicated by the DMRS CS information field, and the CIF information field is a fixed value for UL SPS scheduling. Detection of information PDCCH.

The method according to claim 5, wherein the PHICH channel resource calculation comprises: the PHICH channel resource is indicated by a parameter to the HKU,

Ngroup _ J lowest _index ^modN ⁸ "TM ¹ ' + T ]^

Nseq ₌ I 1 st— index _{/ N} group I , \ _mQ A 2M ^PHICH

_TT

When frame 4 or 9 is carried, mcH is 1, otherwise 0.

Express

T lowest—index / - τ group

丄PRB—RA ^{1 1X1} PHICH is down to J^L.

A terminal, comprising: a receiving module, a calculating module, and a sending module, wherein the receiving module is configured to receive UL SPS scheduling information in a current DL CC sent by a base station; The UL SPS PUSCH is transmitted on the UL Primary CC according to the transmission attribute indicated in the UL SPS scheduling information, if the current DL CC carrier finger When the CIF is available, the DMRS signal is determined according to the DMRS CS value indicated by the CIF information field or determined according to the DMRS CS value indicated by the DMRS CS information field;

The calculating module is configured to calculate a corresponding PHICH channel resource, where the PHICH channel resource is calculated according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value, and the receiving module is in the PHICH channel resource The ACK/NAK feedback subframe of the UL SPS PUSCH is monitored.

The terminal according to claim 7, wherein the calculation module calculates the PHICH channel resource according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value, if the terminal current DL CC When the CIF is available, the DMRS cyclic shift value indication used in the uplink transmission corresponding to the PHICH includes:

The terminal according to claim 8, wherein the computing module calculates the PHICH channel resource, including:

The PHICH channel resource is indicated by a parameter to the HKU, Group ₌ lowest.index 1110(11^ + 1 N

¹¹ PHICH V ^A PRB_RA ¹¹ DMRS PHICti ^A PHICH :

Seq ₌ 1 J 1 st— index _{/ N} group | \动d d 9 PHICH

¹¹ PHICH V|_ ^A PRB_RA ' PHICH ^DMRS,

Where is the size of the spreading factor for PHICH modulation, ^Ν °ίί _Η is the number of PHICH groups configured by higher layer signaling, when TDD UL/DL is configured to 0 mode and PUSCH is in the sub

_TT

When frame 4 or 9 is carried, racH is 1, otherwise 0.

J means right

T lowest—index / - τ group

丄PRB—RA ^{1 1X1} PHICH is down to J^L.

A base station, comprising: a sending module, a resource allocating module, and a receiving module,

The base station according to claim 10, wherein the resource allocation module calculates the PHICH channel resource according to the resource indication information field in the UL SPS scheduling information and the corresponding DMRS CS value, if the terminal current DL CC's CIF can When used, DMRS cyclic shift value which indicates how the uplink transmission corresponding PHICH include: when DMRS cyclic signal according to the DMRS when the CIF DMRS CS domain information indicating the determined uplink transmission using the PHICH corresponding to a shift value ⁿ The DMRs are DMRS CS values indicated according to the CIF information field; or when the DMRS signal is determined according to the DMRS CS value indicated by the DMRS CS information field, the DMRS cyclic shift value used in the uplink transmission corresponding to the PHICH is based on the DMRS CS information. The DMRS CS value indicated by the domain, and the CIF information field is a fixed value, used for detecting the UL SPS scheduling information PDCCH.

The base station according to claim 11, wherein the resource allocation module calculates the PHICH channel resource comprises: the PHICH channel resource is indicated by a parameter pair HKU, ngro _U p ₌ lowest _index mOdN ^gr ° ^UP +1

HpfflGH ipRB— RA ^DMRS , ^X PHICH ^± PHICH ¹ :

Nseq ₌ I 1 st — index _{/ N} group I , \ _mQ AM PHICH where is the size of the spreading factor for PHICH modulation, ^Ν °ίί _Η is the number of PHICH groups configured by higher layer signaling, when TDD UL/DL is configured as 0 mode and PUSCH is in the child

_TT

When frame 4 or 9 is carried, mcH is 1, otherwise 0.

Express

T lowest—index / - τ group

^丄PRB— RA ^11X1 PHICH down