WO2016179775A1 - Method and apparatus for determining physical hybrid automatic repeat request indicator channel resources - Google Patents

Abstract

Embodiments of the present invention provide a method and apparatus for determining physical hybrid automatic repeat request indicator channel resources, applied to scenarios where PHICH resources of which a transmission interval is smaller than 1ms in an LTE system are allocated and/or an F-PRB is introduced when the PHICH resources are allocated. Transmission resources can be saved, and collisions of PHICH resources can also be avoided, such that PHICH resources used by different user equipments are independent mutually and do not interfere mutually.

Description

Method and device for determining physical hybrid automatic repeat request indication channel resource Technical field

The embodiments of the present invention relate to a communication technology, and in particular, to a method and an apparatus for determining a Physical Hybrid Automatic Repeat Request Indicator Channel (PHICH) resource.

Background technique

Enhanced Voice Service (EVS) is the next generation voice coding solution of the Third Generation Partnership Project (3GPP). The EVS is enhanced by the speech coding technology. Compared with the traditional voice service, it is assumed that there is no padding bit, and the media access control layer data unit (Media Access Control Packet Data Unit) corresponding to the voice frame generated by the EVS in the same time. The MAC PDU) size is much smaller than the MAC PDU size corresponding to the traditional voice service.

In the Long Term Evolution (LTE) system, a resource block is no longer needed to transmit a MAC PDU. RB) Yes, the resource block pair occupies 1 millisecond (ms) in the time domain. However, the minimum resource allocation unit of the voice service in the LTE system is now a resource block pair, resulting in waste of transmission resources.

Summary of the invention

Embodiments of the present invention provide a method and apparatus for determining a physical hybrid automatic repeat request indication channel resource to save transmission resources.

In a first aspect, an embodiment of the present invention provides a method for determining a physical hybrid automatic repeat request indication channel (PHICH) resource, where the method is applied to a PHICH resource allocation of a long-term evolution LTE system that is less than 1 millisecond transmission interval TTI, and the method includes :

Determining a time slot for transmitting uplink data;

Determining, according to the identification information of the time slot and the minimum physical resource block PRB index used by the uplink data in the time slot, the PHICH resource used for the response information corresponding to the uplink data. The source, the response information is used to indicate whether the base station has correctly received the uplink data.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the 1 millisecond TTI includes M short TTIs, the M is an integer greater than or equal to 2, and the time slot is the short TTI, The method further includes: before determining the PHICH resource used by the response information corresponding to the uplink data, according to the identifier information of the time slot and the minimum PRB index used by the uplink data in the time slot, the method further includes:

And determining identifier information of the time slot according to the slot number of the time slot, the number of the M and the downlink resource block RB.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the identifier information of the time slot is determined according to the following formula:

表示所述下行RB的个数；mod表示取余符号。Wherein, I _s represents the identification information of the time slot; n _s represents the time slot number, n _s is an integer greater than or equal to 0 and less than M, or n _s is greater than or equal to 0 and less than L×M An integer representing the number of subframes in a radio frame;

Indicates the number of downlink RBs; mod indicates the remainder symbol.

With reference to the second possible implementation of the first aspect, in a third possible implementation manner of the first aspect, the determining information according to the time slot and the uplink data are used in the time slot The minimum PRB index, and the PHICH resource used for determining the response information corresponding to the uplink data, includes:

The group number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

The orthogonal sequence number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

表示所述PHICH资源所在的组号；

表示所述PHICH资源的正交序列号；对于有对应物理下行控制信道PDCCH的物理上行共享信道PUSCH传输的第一个传输块TB，或者，没有对应PDCCH的PUSCH，当否定确认NACK的传输块个数大于或小于最近一次与PUSCH相关的PDCCH中指示的传输块个数，

对于有对应PDCCH的PUSCH传输的第二个TB，

表示所述上行数据在 所述时隙内使用的所述最小PRB索引；n_DMRS表示解调参考信号DM-RS偏移，是根据下行控制信息DCI中指示的循环移位获得的；

表示所述PHICH资源使用的扩频因子SF；

表示PHICH资源的组个数；对于时分双工TDD上行/下行配置0中，在子帧4或子帧9中具有PUSCH传输时，I_PHICH＝1，否则，I_PHICH＝0；mod表示取余符号；

表示向下取整符号。In the formula,

Indicates the group number of the PHICH resource;

An orthogonal sequence number indicating the PHICH resource; a first transport block TB for a physical uplink shared channel PUSCH transmission corresponding to a physical downlink control channel PDCCH, or a PUSCH corresponding to a PDCCH, and a negative acknowledgement NACK transport block The number is greater than or less than the number of transport blocks indicated in the PDCCH associated with the most recent PUSCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

_Deriving the minimum PRB index used by the uplink data in the time slot; n _DMRS indicating a demodulation reference signal DM-RS offset, which is obtained according to a cyclic shift indicated in the downlink control information DCI;

a spreading factor SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for time division duplex TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates redundancy symbol;

Indicates that the symbol is rounded down.

In a second aspect, the embodiment of the present invention provides a method for determining a physical hybrid automatic repeat request indication channel PHICH resource, where the method is applied to a scenario where a fractional physical resource block F-PRB is introduced when a PHICH resource is allocated in a long term evolution LTE system. , the method includes:

Determining a time slot for transmitting uplink data;

Determining, according to the number of the F-PRBs included in a single physical resource block PRB, and the minimum F-PRB identifier in the smallest PRB index used in the first time slot of the time slot. a PHICH resource used by the response information corresponding to the uplink data, where the response information is used to indicate whether the base station has correctly received the uplink data.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the number of the F-PRBs included in a single PRB, and the uplink data are first in the time slot. The minimum F-PRB identifier in the smallest PRB index used in the time slot, and the PHICH resource used for determining the response information corresponding to the uplink data, including:

Determining, according to the number of the F-PRBs included in a single PRB, a minimum F-PRB identifier in a minimum PRB index used in a first slot of the time slot, and a downlink resource block RB Number, determine the identification information of the F-PRB;

And determining, according to the identifier information of the F-PRB, a PHICH resource used by the response information corresponding to the uplink data.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the uplink data is in accordance with the number of the F-PRBs included in a single PRB The minimum F-PRB identifier in the smallest PRB index used in the first slot in the slot, and the number of the downlink resource block RB, determine the identification information of the F-PRB, including:

The identification information of the F-PRB is determined according to the following formula:

表示所述下行RB的个数。Wherein, I _F-PRB indicates identification information of the F-PRB; n _F-PRB indicates a minimum F-PRB identifier of the smallest PRB index used by the uplink data in the first slot of the time slot; N _F-PRB indicates the number of F-PRBs contained in a single PRB;

Indicates the number of downlink RBs.

With reference to the second possible implementation of the second aspect, in a third possible implementation manner of the second aspect, the determining, according to the identifier information of the F-PRB, determining a response information corresponding to the uplink data PHICH resources used, including:

The group number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

The orthogonal sequence number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

表示所述PHICH资源所在的组号；

表示所述PHICH资源的正交序列号；对于有对应物理下行控制信道PDCCH的物理上行共享信道PUSCH传输的第一个传输块TB，或者，没有对应PDCCH的PUSCH，当否定确认NACK的传输块个数大于或小于最近一次与PUSCH相关的PDCCH中指示的传输块个数，

对于有对应PDCCH的PUSCH传输的第二个TB，

表示所述上行数据在所述时隙内中第一个时隙使用的所述最小PRB索引；n_DMRS表示解调参考信号DM-RS偏移，是根据下行控制信息DCI中指示的循环移位获得的；

表示所述PHICH资源使用的扩频因子SF；

表示PHICH资源的组个数；对于时分双工TDD上行/下行配置0中，在子帧4或子帧9中具有PUSCH传输时，I_PHICH＝1，否则，I_PHICH＝0；mod表示取余符号；

表示向下取整符号。In the formula,

Indicates the group number of the PHICH resource;

An orthogonal sequence number indicating the PHICH resource; a first transport block TB for a physical uplink shared channel PUSCH transmission corresponding to a physical downlink control channel PDCCH, or a PUSCH corresponding to a PDCCH, and a negative acknowledgement NACK transport block The number is greater than or less than the number of transport blocks indicated in the PDCCH associated with the most recent PUSCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in the first time slot in the time slot; n _DMRS indicating the demodulation reference signal DM-RS offset, which is according to the cyclic shift indicated in the downlink control information DCI acquired;

a spreading factor SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for time division duplex TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates redundancy symbol;

Indicates that the symbol is rounded down.

In a third aspect, an embodiment of the present invention provides a method for determining a PHMH resource of a physical hybrid automatic repeat request indication channel, which is applied to PHICH resource allocation of a TTI of less than 1 millisecond transmission interval in a Long Term Evolution (LTE) system, or allocates PHICH resources in an LTE system. The scenario of the fractional physical resource block F-PRB is introduced, and the method includes:

Determining a time slot for transmitting uplink data;

Determining, according to the pre-configured demodulation reference signal DM-RS offset, and the minimum PRB index used by the uplink data in the first slot of the time slot, determining response information corresponding to the uplink data The PHICH resource configures different DM-RS offsets for user equipments that use different time slots in the same subframe, or use the same F-PRB but the same PRB index in the same subframe to transmit uplink data.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the pre-configured DM-RS offset, and the uplink data is used in a first time slot of the time slot. The minimum PRB index, the PHICH resource used to obtain the response information corresponding to the uplink data, includes:

Obtaining the PHICH resource used by the response information corresponding to the uplink data according to the following formula

表示所述PHICH资源所在的组号；

表示所述PHICH资源的正交序列号；对于有对应物理下行控制信道PDCCH的物理上行共享信道PUSCH传输的第一个传输块TB，或者，没有对应PDCCH的PUSCH，当否定确认NACK的传输块个数大于或小于最近一次与PUSCH相关的PDCCH中指示的传输块个数，

对于有对应PDCCH的PUSCH传输的第二个TB，

表示所述上行数据在所述时隙中第一个时隙内使用的所述最小PRB索引；n_DMRS表示所述预先配置的DM-RS偏移；

表示所述PHICH资源使用的扩频因子SF；

表示PHICH资源的组个数；对于时分双工TDD上行/下行配置0中，在子帧4或子帧9中具有PUSCH传输时，I_PHICH＝1，否则，I_PHICH＝0；mod表示取余符号；

表示向下取整符号。among them,

Indicates the group number of the PHICH resource;

An orthogonal sequence number indicating the PHICH resource; a first transport block TB for a physical uplink shared channel PUSCH transmission corresponding to a physical downlink control channel PDCCH, or a PUSCH corresponding to a PDCCH, and a negative acknowledgement NACK transport block The number is greater than or less than the number of transport blocks indicated in the PDCCH associated with the most recent PUSCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in a first time slot of the time slot; n _DMRS indicating the pre-configured DM-RS offset;

a spreading factor SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for time division duplex TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates redundancy symbol;

Indicates that the symbol is rounded down.

With reference to the third aspect or the first possible implementation manner of the third aspect, in the second possible implementation manner of the third aspect, in the semi-persistent scheduling, the limitation that the DM-RS offset is equal to zero is canceled.

In a fourth aspect, an embodiment of the present invention provides an apparatus for determining a physical hybrid automatic repeat request indication channel PHICH resource, where the apparatus is applied to a PHICH resource allocation of a long-term evolution LTE system that is less than 1 millisecond transmission interval TTI, where the apparatus includes :

a determining module, configured to determine a time slot for transmitting uplink data;

a processing module, configured to determine, according to the identifier information of the time slot and a minimum physical resource block PRB index used by the uplink data in the time slot, a PHICH resource used by the response information corresponding to the uplink data, where The response information is used to indicate whether the base station has correctly received the uplink data.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the 1 millisecond TTI includes M short TTIs, the M is an integer greater than or equal to 2, and the time slot is the short TTI, The processing module is also used to:

And determining identifier information of the time slot according to the slot number of the time slot, the number of the M and the downlink resource block RB.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the processing module is configured to perform the time slot number, the M, and the downlink according to the time slot The number of RBs, when determining the identification information of the time slot, is specifically used to:

The identification information of the time slot is determined according to the following formula:

表示所述下行RB的个数；mod表示取余符号。Wherein, I _s represents the identification information of the time slot; n _s represents the time slot number, n _s is an integer greater than or equal to 0 and less than M, or n _s is greater than or equal to 0 and less than L×M An integer representing the number of subframes in a radio frame;

Indicates the number of downlink RBs; mod indicates the remainder symbol.

With the second possible implementation of the fourth aspect, in a third possible implementation manner of the fourth aspect, the processing module is configured to perform the identification information according to the time slot and the uplink data at the time The processing module is specifically configured to: when the PHICH resource used for the response information corresponding to the uplink data is determined, the processing module is specifically configured to:

The group number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

The orthogonal sequence number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

表示所述PHICH资源所在的组号；

表示所述PHICH资源的正交序列号；对于有对应物理下行控制信道PDCCH的物理上行共享信道PUSCH传输的第一个传输块TB，或者，没有对应PDCCH的PUSCH，当否定确认NACK的传输块个数大于或小于最近一次与PUSCH相关的PDCCH中指示的传输块个数，

对于有对应PDCCH的PUSCH传输的第二个TB，

表示所述上行数据在所述时隙内使用的所述最小PRB索引；n_DMRS表示解调参考信号DM-RS偏移，是根据下行控制信息DCI中指示的循环移位获得的；

表示所述PHICH资源使用的扩频因子SF；

表示PHICH资源的组个数；对于时分双工TDD上 行/下行配置0中，在子帧4或子帧9中具有PUSCH传输时，I_PHICH＝1，否则，I_PHICH＝0；mod表示取余符号；

表示向下取整符号。among them,

Indicates the group number of the PHICH resource;

An orthogonal sequence number indicating the PHICH resource; a first transport block TB for a physical uplink shared channel PUSCH transmission corresponding to a physical downlink control channel PDCCH, or a PUSCH corresponding to a PDCCH, and a negative acknowledgement NACK transport block The number is greater than or less than the number of transport blocks indicated in the PDCCH associated with the most recent PUSCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in the time slot; n _DMRS indicating a demodulation reference signal DM-RS offset, which is obtained according to a cyclic shift indicated in the downlink control information DCI;

a spreading factor SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for time division duplex TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates redundancy symbol;

Indicates that the symbol is rounded down.

In a fifth aspect, an embodiment of the present invention provides an apparatus for determining a physical hybrid automatic repeat request indication channel PHICH resource, where the apparatus is applied to a scenario of introducing a fractional physical resource block F-PRB when a PHICH resource is allocated in a long term evolution LTE system. The device includes:

a determining module, configured to determine a time slot for transmitting uplink data;

a processing module, configured to use, according to the number of the F-PRBs included in a single physical resource block PRB, and a minimum F of the smallest PRB index used by the uplink data in the first time slot of the time slot a PRB identifier, which is used to determine a PHICH resource used by the response information corresponding to the uplink data, where the response information is used to indicate whether the base station has correctly received the uplink data.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the processing module includes:

a first processing unit, configured to determine, according to the number of the F-PRBs included in a single PRB, a minimum F-PRB identifier in a minimum PRB index used by the uplink data in a first time slot in the time slot And the number of downlink resource blocks RB, determining the identification information of the F-PRB;

The second processing unit is configured to determine, according to the identifier information of the F-PRB, a PHICH resource used by the response information corresponding to the uplink data.

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the first processing unit is specifically configured to:

The identification information of the F-PRB is determined according to the following formula:

表示所述下行RB的个数。Wherein, I _F-PRB indicates identification information of the F-PRB; n _F-PRB indicates a minimum F-PRB identifier of the smallest PRB index used by the uplink data in the first slot of the time slot; N _F-PRB represents the number of F-PRBs contained in a single PRB;

Indicates the number of downlink RBs.

In conjunction with the second possible implementation of the fifth aspect, in a third possible implementation manner of the fifth aspect, the first processing unit is specifically configured to:

The group number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

The orthogonal sequence number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

表示所述PHICH资源所在的组号；

表示所述PHICH资源的正交序列号；对于有对应物理下行控制信道PDCCH的物理上行共享信道PUSCH传输的第一个传输块TB，或者，没有对应PDCCH的PUSCH，当否定确认NACK的传输块个数大于或小于最近一次与PUSCH相关的PDCCH中指示的传输块个数，

对于有对应PDCCH的PUSCH传输的第二个TB，

表示所述上行数据在所述时隙内中第一个时隙使用的所述最小PRB索引；n_DMRS表示解调参考信号DM-RS偏移，是根据下行控制信息DCI中指示的循环移位获得的；

表示所述PHICH资源使用的扩频因子SF；

表示PHICH资源的组个数；对于时分双工TDD上行/下行配置0中，在子帧4或子帧9中具有PUSCH传输时，I_PHICH＝1，否则，I_PHICH＝0；mod表示取余符号；

表示向下取整符号。among them,

Indicates the group number of the PHICH resource;

An orthogonal sequence number indicating the PHICH resource; a first transport block TB for a physical uplink shared channel PUSCH transmission corresponding to a physical downlink control channel PDCCH, or a PUSCH corresponding to a PDCCH, and a negative acknowledgement NACK transport block The number is greater than or less than the number of transport blocks indicated in the PDCCH associated with the most recent PUSCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in the first time slot in the time slot; n _DMRS indicating the demodulation reference signal DM-RS offset, which is according to the cyclic shift indicated in the downlink control information DCI acquired;

a spreading factor SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for time division duplex TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates redundancy symbol;

Indicates that the symbol is rounded down.

In a sixth aspect, the embodiment of the present invention provides a device for determining a PHMH resource of a physical hybrid automatic repeat request indication channel, which is applied to PHICH resource allocation of a TTI of less than 1 millisecond transmission interval in a Long Term Evolution (LTE) system, or allocates PHICH resources in an LTE system. The scenario of the fractional physical resource block F-PRB is introduced, and the device includes:

a determining module, configured to determine a time slot for transmitting uplink data;

a processing module, configured to determine, according to the pre-configured demodulation reference signal DM-RS offset, and the minimum PRB index used by the uplink data in the first time slot of the time slot, to determine the uplink data The PHICH resource used for the response information is configured with different DM-RSs for user equipments that use different time slots in the same subframe, or use the same F-PRB in the same subframe but the same resource as the smallest PRB index to transmit uplink data. Offset.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the processing module is specifically configured to:

Obtaining the PHICH resource used by the response information corresponding to the uplink data according to the following formula

表示所述PHICH资源所在的组号；

表示所述PHICH资源的正交序列号；对于有对应物理下行控制信道PDCCH的物理上行共享信道PUSCH传输的第一个传输块TB，或者，没有对应PDCCH的PUSCH， 当否定确认NACK的传输块个数大于或小于最近一次与PUSCH相关的PDCCH中指示的传输块个数，

对于有对应PDCCH的PUSCH传输的第二个TB，

表示所述上行数据在所述时隙中第一个时隙内使用的所述最小PRB索引；n_DMRS表示所述预先配置的DM-RS偏移；

表示所述PHICH资源使用的扩频因子SF；

表示PHICH资源的组个数；对于时分双工TDD上行/下行配置0中，在子帧4或子帧9中具有PUSCH传输时，I_PHICH＝1，否则，I_PHICH＝0；mod表示取余符号；

表示向下取整符号。among them,

Indicates the group number of the PHICH resource;

An orthogonal sequence number indicating the PHICH resource; a first transport block TB for a physical uplink shared channel PUSCH transmission corresponding to a physical downlink control channel PDCCH, or a PUSCH without a corresponding PDCCH, and a negative acknowledgement NACK transport block The number is greater than or less than the number of transport blocks indicated in the PDCCH associated with the most recent PUSCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in a first time slot of the time slot; n _DMRS indicating the pre-configured DM-RS offset;

a spreading factor SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for time division duplex TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates redundancy symbol;

Indicates that the symbol is rounded down.

With reference to the sixth aspect or the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the sixth aspect, the DM-RS offset is equal to a limit of zero when the semi-persistent scheduling is performed.

The embodiment of the invention provides a method and a device for determining a physical hybrid automatic repeat request indication channel resource, which can save transmission resources, and can also avoid users who use different time slots or different F-PRBs in the same subframe but have the same minimum PRB index. The PHICH resources used by the device conflict, so that the PHICH resources used by different user equipments are independent of each other and do not interfere with each other.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic diagram of an LTE system architecture;

2 is a schematic diagram of a protocol architecture of an LTE system;

FIG. 3 is a diagram showing an example of using F-PRB as a PHICH resource allocation granularity;

4 is a flowchart of Embodiment 1 of a method for determining a PHICH resource according to the present invention;

FIG. 5 is a flowchart of Embodiment 2 of a method for determining a PHICH resource according to the present invention;

FIG. 6 is a flowchart of Embodiment 3 of a method for determining a PHICH resource according to the present invention;

FIG. 7 is a schematic structural diagram of Embodiment 1 of an apparatus for determining a PHICH resource according to the present invention;

FIG. 8 is a schematic structural diagram of Embodiment 2 of an apparatus for determining a PHICH resource according to the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The embodiments of the present invention can be used in a Long Term Evolution (LTE) system. The architecture of the LTE system is shown in Figure 1. In FIG. 1, the LTE system includes a core network and an access network (E-UTRAN). The core network includes a Mobility Management Entity (MME)/Serving GateWay (S-GW); the E-UTRAN includes an evolved Node B (eNB) and user equipment (not show). The eNB communicates with the MME/S-GW through the interface S1, and the eNBs communicate through the interface X2.

Referring to FIG. 2, in the LTE system, the source code of the voice service of the sender is through a Packet Data Convergence Protocol (PDCP) layer, a PDCP/Radio Link Control (RLC)/media. The processing of the Access Control Layer (MAC) layer obtains a Packet Data Unit (PDU), which is then sent by the transmitting end to the receiving end through the physical layer (PHY). Here, the transmitting end may be a user equipment (User Equipment, UE for short) or an eNB, and correspondingly, the receiving end is an eNB or a UE.

Here, reference is made to Table 1 and Table 2 for comparison of EVS with traditional voice services, such as Adaptive Multiple Bit Rates (AMR) voice services. Table 1 is the data corresponding to the AMR voice service; Table 2 is the data corresponding to the EVS. The Silence Insertion Descriptor (SID) indicates that when the user equipment is in the silent period, some small packets are generated at equal intervals to indicate a certain degree of noise. A Service Data Unit (SDU) indicates a voice packet size after voice encoding.

Table 1

Table 2

The evaluation shows that EVS only needs 5.9 kilobits per second (kbps) transmission rate to achieve the same voice quality as 12.2kbps AMR voice service. Comparing Table 1 and Table 2, under the assumption that there is no padding, EVS every 20 The size of the Media Access Control Packet Data Unit (MAC PDU) corresponding to the voice frame generated by the millisecond (ms) is much smaller than the MAC PDU size corresponding to the AMR voice service, where the EVS is at 5.9 kbps. The MAC PDU size of the corresponding Robust header compression (ROHC) is 128/216/232, and the MAC PDU size of the AMR after the ROHC corresponding to 12.2 kbps is 320.

For the above reasons, a method for saving transmission resources is to introduce a transmission time-interval (TTI) of less than 1 ms, for example, a TTI of 0.5 ms, that is, each time a user is allocated an RB resource within a TTI less than 1 ms, the minimum. The resource allocation unit is a resource block, which reduces the TTI of 1 ms in the prior art to a TTI of less than 1 ms. Another method for saving transmission resources is to introduce a Fractional Physical Resource Block (F-PRB), that is, each 1 ms TTI is less than 1 PRB resource, for example, 1/2 PRB or 1/4 PRB. The granularity allocates resources to the user, for example, as shown in FIG. In the example shown in FIG. 3, a resource unit group (F-PRB 0) numbered 0 can be assigned to one user for data transmission, and a resource unit group (F-PRB 1) numbered 1 is assigned to another user. Thereby saving transmission resources and improving resource utilization.

In the prior art, the PHICH resource used is determined only according to the PRB index and the Demodulation Reference Signal (DM-RS) offset used by the user data transmission. And for semi-persistent scheduling, the DM-RS offset is now fixed at zero. However, the above two technologies may cause the base station to allocate the same PHICH resource to at least two user equipments, and the at least two user equipments transmit different parts of the RB resources corresponding to the same PRB index in the same subframe. At least two users of data, that is, cause PHICH resource conflicts.

Therefore, an embodiment of the present invention provides a method and apparatus for determining a physical hybrid automatic repeat request indication channel resource, by improving a method for determining a PHICH resource in the prior art, specifically, for determining a PHICH resource for a TTI less than 1 ms. The identification information of the time slot of the uplink data is introduced; for the F-PRB, the minimum F-PRB identifier in the smallest PRB index used by the uplink data in the first time slot of the time slot is introduced when determining the PHICH resource; or A user equipment that allocates PHICH resources in a 1 ms TTI or F-PRB may also use different DM-RS offsets in advance to distinguish between user equipments that use different time slots in the same subframe or different F-PRBs but have the same minimum PRB index. The PHICH resource can save the transmission resources and avoid PHICH resource conflicts, so that the PHICH resources used by different user equipments are independent of each other and do not interfere with each other.

The following are respectively described by way of specific examples.

Embodiment 1

FIG. 4 is a flowchart of Embodiment 1 of a method for determining a PHICH resource according to the present invention. An embodiment of the present invention provides a method for determining a PHICH resource, where the method is applied to a PHICH resource allocation of less than 1 ms TTI in an LTE system, and the method may be performed by a device that determines a PHICH resource, and the device may be implemented by a hardware and/or software method. Implementation, the device can be integrated, for example, in a base station or user equipment. As shown in FIG. 4, the method includes:

S401. Determine a time slot for transmitting uplink data.

Specifically, the time slot of the uplink data sent by the user equipment itself is known; and after receiving the uplink data sent by the user equipment, the base station may also acquire the time slot of the uplink data.

S402. Determine, according to the identifier information of the time slot and the minimum PRB index used by the uplink data in the time slot, the PHICH resource used for the response information corresponding to the uplink data.

The response information is used to indicate whether the base station has correctly received the uplink data. The response information may be, for example, an acknowledgment (ACK) and a negative acknowledgment (NACK).

来表示，其中，

是PHICH资源所在的组号，

是PHICH资源的正交序列号。The Hybrid Automatic Repeat Request (HARQ) technology requires the sender to obtain the response information of the ACK or NACK from the receiver after sending the data to the receiver. The sender determines whether the receiver has received the packet correctly. Data so that the sender decides whether to retransmit the data or send the new data. The PHICH mainly carries the ACK/NACK information of the uplink HARQ, and the plurality of PHICH resources are mapped to the same resource element (Resource Element, referred to as RE) to form a PHICH group, and the PHICH resources in the same group pass different orthogonal sequences. To distinguish, PHICH resources are grouped by sequence numbers.

To show that among them,

Is the group number of the PHICH resource.

Is the orthogonal sequence number of the PHICH resource.

In the prior art, the group number and the orthogonal sequence number of the PHICH resource are the minimum PRB index and downlink control information used in the first time slot according to the data transmission of the user equipment indicated by the eNB in the corresponding scheduling grant (Downlink Control) Information, referred to as: Demodulation reference signal (DM-RS) offset calculation indicated in DCI). The calculation formula for PHICH resources is:

对于有对应PDCCH的PUSCH传输的第二个TB，

其中，

表示PUSCH在第一个时隙内使用的最小PRB索引。n_DMRS表示DM-RS偏移，是根据DCI中指示的循环移位获得的，其中，n_DMRS与循环移位的关系示例如表3所示。

表示PHICH资源使用的扩频因子(Spreading factor，简称：SF)，对于普通循环前缀，

取值为4；对于扩展循环前缀，

取值为2。

表示PHICH资源的组个数。对于时分双工(Time Division Duplexing，简称：TDD)上行/下行配置0中，在子帧4或子帧9中具有PUSCH传输时，I_PHICH＝1，否则，I_PHICH＝0。mod表示取余符号。

表示向下取整符号。 In the above formula, the first transport block (Transport Block, TB for short) for the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) corresponding to the physical downlink control channel (PDCCH) ), or without the PUSCH corresponding to the PDCCH, when the number of negative acknowledged transport blocks is greater or smaller than the number of transport blocks indicated in the PDCCH associated with the most recent PUSCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

among them,

Represents the smallest PRB index used by the PUSCH in the first time slot. n _DMRS indicates the DM-RS offset, which is obtained according to the cyclic shift indicated in the DCI, and an example of the relationship between the n _DMRS and the cyclic shift is as shown in Table 3.

Spreading factor (SF) indicating the use of PHICH resources, for ordinary cyclic prefix,

Value is 4; for extended cyclic prefix,

The value is 2.

Indicates the number of groups of PHICH resources. For Time Division Duplexing (TDD) uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0. Mod represents the remainder symbol.

Indicates that the symbol is rounded down.

table 3

Cyclic shift n _DMRS 000 0 001 1 010 2 011 3 100 4 101 5 110 6 111 7

The difference between the embodiment of the present invention and the prior art is that the PHICH resource used by the response information corresponding to the uplink data is obtained according to the minimum PRB index used by the uplink data in the time slot, and the prior art is based on the PUSCH. The minimum PRB index used in the first time slot is used to determine the PHICH resource used for the response information corresponding to the uplink data. In addition, the embodiment of the present invention also introduces the identifier information of the time slot to determine the response information corresponding to the uplink data. The PHICH resource used.

Therefore, the base station allocates the PHICH resource to the user equipment by using the method for determining the PHICH resource provided by the embodiment of the present invention, and saves the transmission resource, and can also avoid the PHICH used by the user equipment in the same subframe but with the same minimum PRB index. The resource conflicts, so that the PHICH resources used by different user equipments are independent of each other, and do not interfere with each other; and the user equipment can determine the PHICH resources used by the method for determining the PHICH resource provided by the embodiment of the present invention, while saving transmission resources. It also avoids PHICH resource conflicts of other user equipments that use different time slots in the same subframe but the same minimum PRB index, and keeps the PHICH resources used by other user equipments independent of each other without interference.

Based on the foregoing embodiment, the 1 ms TTI includes M short TTIs, where M is an integer greater than or equal to 2, and the time slot is a short TTI. Before the method of S402, the method may further include: determining identifier information of the time slot according to the slot number of the time slot, the number of M and the number of downlink RBs.

In an implementation manner, determining the identifier information of the time slot according to the slot number of the time slot, the number of the M, and the number of the downlink RB may include: determining the identifier information of the time slot according to the following formula:

表示所述下行RB的个数；mod表示取余符号。Wherein, I _s represents the identification information of the time slot; n _s represents the time slot number, n _s is an integer greater than or equal to 0 and less than M, or n _s is an integer greater than or equal to 0 and less than L×M, and L represents The number of subframes in a radio frame;

Indicates the number of downlink RBs; mod indicates the remainder symbol.

In the prior art, one radio frame is 10 ms, the radio frame includes 10 subframes, and each subframe includes 2 slots, so that a total of 10×2 slots, each slot 0.5 ms, each wireless The time slots in the frame are numbered according to 0 to 19. In the embodiment of the present invention, a shorter TTI is introduced, for example, M=4, and each short slot is distinguished by the following two methods, where the short TTI corresponds to the short slot to distinguish the corresponding slot of 0.5 ms.

In the first mode, in a radio frame, numbering is performed according to 0 to (10×4-1);

In the second mode, the numbers are 0, 1, 2, and 3 in each 1 ms TTI;

If it is M=2, it is numbered according to the prior art, that is, the time slots in each radio frame are numbered by 0, 1, 2, ..., 19 .

这一项，得到最后的

For the 0.5 ms TTI, the 1 ms TTI in the prior art is divided into two 0.5 ms TTIs, which can be distinguished by the slot number, so there is (n _s mod2), where the reason of the modulo 2 is 1 ms in the TTI. There are 2 time slots. It is also considered that if only the slot number is distinguished, the PRB of the first slot number n+1 will appear, and the same calculation result is obtained with the PRB of the second slot number n, thus introducing

This one, get the final

Further, in the foregoing embodiment, the S402 may include: determining, according to the following formula, a group number of the PHICH resource used by the response information corresponding to the uplink data:

The orthogonal sequence number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

The specific meanings of the symbols are as described above, and will not be repeated here. The embodiment of the present invention does not limit the PHICH resource obtained by the above formula.

In the embodiment of the present invention, when the PHICH resource is determined, the identifier information of the time slot is introduced, and different time slots are used to distinguish different time slots, so that the PHICH resources corresponding to each user equipment can be distinguished by the identifier information of the time slot, thereby saving The transmission resources can also avoid conflicts of PHICH resources used by user equipments with different time slots in the same subframe but with the smallest PRB index, so that the PHICH resources used by different user equipments are independent of each other and do not interfere with each other.

Embodiment 2

Different from the first embodiment, the method for determining a PHICH resource in the embodiment of the present invention introduces an uplink number. The smallest F-PRB identifier in the smallest PRB index used in the first time slot of the time slot.

FIG. 5 is a flowchart of Embodiment 2 of a method for determining a PHICH resource according to the present invention. An embodiment of the present invention provides a method for determining a PHICH resource, where the method is applied to a scenario in which an F-PRB is introduced when a PHICH resource is allocated in an LTE system, and the method may be performed by a device that determines a PHICH resource, and the device may pass hardware and/or Or a software implementation, the device can be integrated, for example, in a base station or user equipment. As shown in FIG. 5, the method includes:

S501. Determine a time slot for transmitting uplink data.

S502. Determine, according to the number of F-PRBs included in a single PRB, and the minimum F-PRB identifier in the smallest PRB index used by the uplink data in the first time slot of the time slot, determine a response corresponding to the uplink data. PHICH resources used by the information.

The response information is used to indicate whether the base station has correctly received the uplink data. The response information may be, for example, an acknowledgment (ACK) and a negative acknowledgment (NACK). The F-PRB identifier may be an index of the F-PRB or a number of the F-PRB or the like.

In the embodiment of the present invention, the F-PRB identifier distinguishes different F-PRBs to distinguish PHICH resources used by user equipments with different F-PRBs but the same minimum PRB index in the same subframe. The transmission resources are saved, and the PHICH resource conflicts are also avoided, so that the PHICH resources used by different user equipments are independent of each other and do not interfere with each other.

Referring to FIG. 3, each F-PRB has an independent identifier. Therefore, when the subframes corresponding to different user equipments and the minimum PRB index are the same, the PHICH used by the user equipment can also be avoided by the identifier of the F-PRB. Resource conflicts.

Correspondingly, the base station allocates the PHICH resource to the user equipment by using the method for determining the PHICH resource provided by the embodiment of the present invention, which can save the transmission resource, and can also avoid the PHICH used by the user equipment with the same F-PRB but the same minimum PRB index in the same subframe. The conflict of the resources is such that the PHICH resources used by the different user equipments are independent of each other and do not interfere with each other. The user equipment can determine the PHICH resources used by the method for determining the PHICH resources provided by the embodiment of the present invention, thereby saving transmission resources. The PHICH resource conflicts of other user equipments that use the same F-PRB but the smallest PRB index in the same subframe are avoided, so that they are independent of the PHICH resources used by other household devices, and do not interfere with each other.

In the above embodiment, S502 may include: according to the number of F-PRBs included in a single PRB, the smallest of the smallest PRB indexes used by the uplink data in the first slot of the time slot. The F-PRB identifier and the number of downlink RBs determine the identification information of the F-PRB, and determine the PHICH resource used for the response information corresponding to the uplink data according to the identification information of the F-PRB.

In an implementation manner, according to the number of F-PRBs included in a single PRB, the minimum F-PRB identifier in the smallest PRB index used by the uplink data in the first slot of the time slot, and the downlink RB identifier The determining the identification information of the F-PRB may include: determining the identification information of the F-PRB according to the following formula:

表示下行RB的个数。In the above formula, I _F-PRB represents the identification information of the _F-PRB ; n _F-PRB represents the minimum F-PRB identifier in the smallest PRB index used by the uplink data in the first slot of the slot; N _{F -PRB} F-PRB represents the number contained in a single PRB, N _F-PRB specific values may be determined by higher layer configuration, i.e., high-level configuration information can be clearly divided per PRB number F-PRB, 2 or 4, e.g. ,and many more;

Indicates the number of downlink RBs.

这一项，得到最后的

For multiple F-PRBs in a PRB pair, the F-PRB number can be distinguished, so there is (n _F-PRB mod N _F-PRB ); but if only the F-PRB number is distinguished, the first The F-PRB with n PRB number 1 has the same calculation result as the F-PRB with the n+1th PRB number 0, so it is introduced again.

This one, get the final

Optionally, determining the PHICH resource used by the response information corresponding to the uplink data according to the identifier information of the F-PRB may include: determining, according to the following formula, a group number of the PHICH resource used by the response information corresponding to the uplink data. :

The orthogonal sequence number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

The specific meanings of the symbols are as described above, and will not be repeated here. The embodiment of the present invention does not limit the PHICH resource obtained by the above formula.

Embodiment 3

Since the prior art determines the PHICH resource, the minimum PRB index used in the first time slot and the DM-RS offset indicated in the DCI are calculated according to the data transmission of the user equipment indicated by the eNB in the corresponding scheduling grant, and The application scenario of the embodiment of the present invention is that the subframe corresponding to the different user equipments and the minimum PRB index are the same. Therefore, in the third embodiment, the DM-RS offset is preset to avoid using different time slots or different Fs in the same subframe. -PRB but minimum PRB index The PHICH resource conflicts of the same user equipment.

FIG. 6 is a flowchart of Embodiment 3 of a method for determining a PHICH resource according to the present invention. An embodiment of the present invention provides a method for determining a PHICH resource, where the method is applied to a PHICH resource allocation of less than 1 ms TTI in the LTE system or an F-PRB scenario when the PHICH resource is allocated in the LTE system, where the method may determine the PHICH resource. The device is implemented, and the device can be implemented by a hardware and/or software method, which can be integrated, for example, in a base station or user equipment. As shown in FIG. 6, the method includes:

S601. Determine a time slot for transmitting uplink data.

S602. Determine, according to the pre-configured DM-RS offset, and the minimum PRB index used by the uplink data in the first time slot of the time slot, the PHICH resource used for the response information corresponding to the uplink data.

Different DM-RS offsets are configured for user equipments that use different time slots in the same subframe, or use the same F-PRB but the same PRB index in the same subframe to transmit uplink data.

For a semi-persistently scheduled user equipment that allocates PHICH resources by less than 1 ms TTI or F-PRB, the semi-static scheduling activation or reactivation uses the same time slot or different F-PRB but the same minimum PRB index in the same subframe. The user equipment allocates different DM-RS indexes; then, both the initial transmission and the non-adaptive retransmission of the semi-persistent scheduling user equipment use the pre-configured DM-RS index to obtain the PHICH resource.

Specifically, the base station configures a DM-RS index for the user equipment in advance when the semi-persistent scheduling is activated for the semi-persistent scheduling user scheduled by the TTI or F-PRB less than 1 ms, and uses the DM-RS index configured when the semi-persistent scheduling is activated. Calculate the PHICH resource corresponding to each semi-static transmission or retransmission and send ACK/NACK information on the corresponding PHICH resource. Then, the user equipment calculates the PHICH resource corresponding to each semi-persistent transmission or retransmission and receives the ACK/NACK information on the corresponding PHICH resource according to the DM-RS index indicated in the received semi-persistent scheduling activation information. Therefore, transmission resources can be saved, and PHICH resource conflicts used by semi-persistently scheduled user equipments with different time slots or different F-PRBs but the same minimum PRB index in the same subframe can be avoided, so that they are used with other household devices. The PHICH resources are independent of each other and do not interfere with each other.

For a dynamically scheduled user equipment that allocates PHICH resources by less than 1 ms TTI or F-PRB, different time slots or different F-PRBs but minimum PRBs in the same subframe may be directly distinguished by pre-configuring different DM-RS indexes. Index the PHICH resources used by the same user equipment.

Because the DM-RS offsets of different user equipments are different, the PHICH resources of user equipments with different time slots or different F-PRBs but the same minimum PRB index in the same subframe can be distinguished, thereby avoiding collision of PHICH resources.

Alternatively, in semi-persistent scheduling, the limit of the DM-RS offset equal to zero is cancelled.

Based on the foregoing embodiment, S602 may specifically include: determining, according to the following formula, a PHICH resource used for response information corresponding to the uplink data.

The n _DMRS indicates the pre-configured DM-RS offset; the specific meanings of the remaining symbols are as described above, and are not described herein again.

FIG. 7 is a schematic structural diagram of Embodiment 1 of an apparatus for determining a PHICH resource according to the present invention. An embodiment of the present invention provides an apparatus for determining a PHICH resource, which may be implemented by a hardware and/or software method, and the apparatus may be integrated in, for example, a base station or a user equipment. As shown in FIG. 7, the apparatus 70 for determining a PHICH resource includes a determining module 71 and a processing module 72.

In one embodiment, the apparatus 70 for determining PHICH resources is applied to PHICH resource allocations of less than 1 ms TTI in an LTE system. Specifically, the determining module 71 is configured to determine a time slot for transmitting uplink data. The processing module 72 is configured to determine, according to the identifier information of the time slot and the minimum PRB index used by the uplink data in the time slot, the PHICH resource used by the response information corresponding to the uplink data, and the response information. It is used to indicate whether the base station has correctly received the uplink data.

The device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 4, and the implementation principle and technical effects are similar, and details are not described herein again.

Optionally, the 1 ms TTI includes M short TTIs, M is an integer greater than or equal to 2, and the time slots are short TTIs. The processing module 72 is further configured to: determine the identifier information of the time slot according to the slot number of the time slot, the number of the M and the number of the downlink RB.

The processing module 72 may be specifically configured to: determine the identifier information of the time slot according to the following formula when performing the identification of the time slot according to the slot number, the M, and the number of the downlink RBs of the time slot:

表示下行RB的个数；mod表示取余符号。Wherein, I _s represents the identification information of the time slot; n _s represents the time slot number, n _s is an integer greater than or equal to 0 and less than M, or n _s is an integer greater than or equal to 0 and less than L×M, and L represents The number of subframes in a radio frame;

Indicates the number of downlink RBs; mod indicates the remainder symbol.

In addition, the processing module 72 performs the use of the identification information according to the time slot and the uplink data in the time slot. The minimum PRB index, when determining the PHICH resource used for the response information corresponding to the uplink data, may be specifically used to: determine the group number of the PHICH resource used by the response information corresponding to the uplink data according to the following formula:

The orthogonal sequence number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

表示所述PHICH资源所在的组号；

表示所述PHICH资源的正交序列号；对于有对应PDCCH的PUSCH传输的第一个TB，或者，没有对应PDCCH的PUSCH，当NACK的传输块个数大于或小于最近一次与PUSCH相关的PDCCH中指示的传输块个数，

对于有对应PDCCH的PUSCH传输的第二个TB，

表示所述上行数据在所述时隙内使用的所述最小PRB索引；n_DMRS表示DM-RS偏移，是根据DCI中指示的循环移位获得的；

表示所述PHICH资源使用的SF；

表示PHICH资源的组个数；对于TDD上行/下行配置0中，在子帧4或子帧9中具有PUSCH传输时，I_PHICH＝1，否则，I_PHICH＝0；mod表示取余符号；

表示向下取整符号。among them,

Indicates the group number of the PHICH resource;

Indicates the orthogonal sequence number of the PHICH resource; for the first TB of the PUSCH transmission with the corresponding PDCCH, or the PUSCH corresponding to the PDCCH, when the number of transmission blocks of the NACK is greater or smaller than the most recent PDCCH associated with the PUSCH The number of transport blocks indicated,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in the time slot; n _DMRS indicating a DM-RS offset, which is obtained according to a cyclic shift indicated in the DCI;

SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates a remnant symbol;

Indicates that the symbol is rounded down.

In another embodiment, the apparatus 70 for determining a PHICH resource is applied to a scenario in which an F-PRB is introduced when a PHICH resource is allocated in an LTE system. Specifically, the determining module 71 is configured to determine a time slot for transmitting uplink data. The processing module 72 is configured to: according to the number of the F-PRBs included in a single PRB, and the minimum F-PRB identifier in the minimum PRB index used by the uplink data in the first slot of the time slot And determining a PHICH resource used by the response information corresponding to the uplink data, where the response information is used to indicate whether the base station has correctly received the uplink data.

The device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 5, and the implementation principle and technical effects are similar, and details are not described herein again.

On the basis of the foregoing embodiment, the processing module 72 may include: a first processing unit, configured to: according to the number of the F-PRBs included in a single PRB, the uplink data is first in the time slot The minimum F-PRB identifier in the minimum PRB index used in the slot, and the number of downlink RBs, to determine the identification information of the F-PRB; the second processing unit, configured to determine the location according to the identifier information of the F-PRB The PHICH resource used for the response information corresponding to the uplink data.

Further, the first processing unit may be specifically configured to: determine the F-PRB according to the following formula Identification information:

表示所述下行RB的个数。Wherein, I _F-PRB indicates identification information of the F-PRB; n _F-PRB indicates a minimum F-PRB identifier of the smallest PRB index used by the uplink data in the first slot of the time slot; N _F-PRB represents the number of F-PRBs contained in a single PRB;

Indicates the number of downlink RBs.

The second processing unit may be specifically configured to: determine, according to the following formula, a group number of the PHICH resource used by the response information corresponding to the uplink data:

The orthogonal sequence number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

表示所述PHICH资源所在的组号；

表示所述PHICH资源的正交序列号；对于有对应PDCCH的PUSCH传输的第一个TB，或者，没有对应PDCCH的PUSCH，当NACK的传输块个数大于或小于最近一次与PUSCH相关的PDCCH中指示的传输块个数，

对于有对应PDCCH的PUSCH传输的第二个TB，

表示所述上行数据在所述时隙内中第一个时隙使用的所述最小PRB索引；n_DMRS表示DM-RS偏移，是根据DCI中指示的循环移位获得的；

表示所述PHICH资源使用的SF；

表示PHICH资源的组个数；对于TDD上行/下行配置0中，在子帧4或子帧9中具有PUSCH传输时，I_PHICH＝1，否则，I_PHICH＝0；mod表示取余符号；

表示向下取整符号。among them,

Indicates the group number of the PHICH resource;

Indicates the orthogonal sequence number of the PHICH resource; for the first TB of the PUSCH transmission with the corresponding PDCCH, or the PUSCH corresponding to the PDCCH, when the number of transmission blocks of the NACK is greater or smaller than the most recent PDCCH associated with the PUSCH The number of transport blocks indicated,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in a first time slot in the time slot; n _DMRS indicating a DM-RS offset, which is obtained according to a cyclic shift indicated in the DCI;

SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates a remnant symbol;

Indicates that the symbol is rounded down.

In another embodiment, the apparatus 70 for determining the PHICH resource is applied to a PHICH resource allocation of less than 1 ms TTI in the LTE system or a scenario of introducing an F-PRB when the PHICH resource is allocated in the LTE system. Specifically, the determining module 71 is configured to determine a time slot for transmitting uplink data. The processing module 72 is configured to determine, according to the pre-configured DM-RS offset, the minimum PRB index used by the uplink data in the first time slot of the time slot, the response information corresponding to the uplink data. The used PHICH resource configures different DM-RS offsets for user equipments that use different time slots in the same subframe or that use the same F-PRB but the same PRB index in the same subframe to transmit uplink data.

The device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 6. The implementation principle and technical effects are similar, and details are not described herein again.

Further, the processing module 72 may be specifically configured to: obtain the PHICH resource used by the response information corresponding to the uplink data according to the following formula:

表示所述PHICH资源所在的组号；

表示所述PHICH资源的正交序列号；对于有对应PDCCH的PUSCH传输的第一个TB，或者，没有对应PDCCH的PUSCH，当NACK的传输块个数大于或小于最近一次与PUSCH相关的PDCCH中指示的传输块个数，

对于有对应PDCCH的PUSCH传输的第二个TB，

表示所述上行数据在所述时隙中第一个时隙内使用的所述最小PRB索引；n_DMRS表示所述预先配置的DM-RS偏移；

表示所述PHICH资源使用的SF；

表示PHICH资源的组个数；对于TDD上行/下行配置0中，在子帧4或子帧9中具有PUSCH传输时，I_PHICH＝1，否则，I_PHICH＝0；mod表示取余符号；

表示向下取整符号。among them,

Indicates the group number of the PHICH resource;

Indicates the orthogonal sequence number of the PHICH resource; for the first TB of the PUSCH transmission with the corresponding PDCCH, or the PUSCH corresponding to the PDCCH, when the number of transmission blocks of the NACK is greater or smaller than the most recent PDCCH associated with the PUSCH The number of transport blocks indicated,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in a first time slot of the time slot; n _DMRS indicating the pre-configured DM-RS offset;

SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates a remnant symbol;

Indicates that the symbol is rounded down.

Alternatively, in semi-persistent scheduling, the limit of the DM-RS offset equal to zero is cancelled.

The device for determining the PHICH resource in this embodiment may be used to perform the technical solution for determining the PHICH resource provided by any embodiment of the present invention. The implementation principle and the technical effect are similar, and details are not described herein again.

FIG. 8 is a schematic structural diagram of Embodiment 2 of an apparatus for determining a PHICH resource according to the present invention. An embodiment of the present invention provides an apparatus for determining a PHICH resource, which may be implemented by a hardware and/or software method, and the apparatus may be integrated in, for example, a base station or a user equipment. As shown in FIG. 8, the apparatus 80 for determining PHICH resources includes a processor 81 and a memory 82. The means 80 for determining PHICH resources may also include a transmitter 83, a receiver 84. Transmitter 83 and receiver 84 can be coupled to processor 81. The memory 82 stores execution instructions. When the device 80 that determines the PHICH resource is running, the processor 81 communicates with the memory 82, and the processor 81 calls the execution instruction in the memory 82 to perform the following operations:

Determining a time slot for transmitting uplink data;

Determining, according to the identifier information of the time slot and the minimum PRB index used by the uplink data in the time slot, the PHICH resource used by the response information corresponding to the uplink data, where the response information is used to indicate whether the base station is The uplink data has been correctly received.

Optionally, the 1 ms TTI includes M short TTIs, where the M is an integer greater than or equal to 2, The time slot is the short TTI. The method may further include: before determining the PHICH resource used by the response information corresponding to the uplink data, according to the identifier information of the time slot and the minimum PRB index used by the uplink data in the time slot. And determining identifier information of the time slot according to the slot number of the time slot, the number of the M and the downlink RB.

Further, determining the identifier information of the time slot according to the slot number of the time slot, the number of the M, and the number of the downlink RB may include: determining, according to the following formula, identifier information of the time slot:

表示下行RB的个数；mod表示取余符号。Wherein, I _s represents the identification information of the time slot; n _s represents the time slot number, n _s is an integer greater than or equal to 0 and less than M, or n _s is greater than or equal to 0 and less than L×M Integer, L represents the number of subframes in a radio frame;

Indicates the number of downlink RBs; mod indicates the remainder symbol.

The determining, according to the identifier information of the time slot and the minimum PRB index used by the uplink data in the time slot, the PHICH resource used for the response information corresponding to the uplink data, may include: The formula determines the group number of the PHICH resource used by the response information corresponding to the uplink data:

The orthogonal sequence number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

表示所述PHICH资源所在的组号；

表示所述PHICH资源的正交序列号；对于有对应PDCCH的PUSCH传输的第一个TB，或者，没有对应PDCCH的PUSCH，当NACK的传输块个数大于或小于最近一次与PUSCH相关的PDCCH中指示的传输块个数，

对于有对应PDCCH的PUSCH传输的第二个TB，

表示所述上行数据在所述时隙内使用的所述最小PRB索引；n_DMRS表示DM-RS偏移，是根据DCI中指示的循环移位获得的；

表示所述PHICH资源使用的扩频因子SF；

表示PHICH资源的组个数；对于TDD上行/下行配置0中，在子帧4或子帧9中具有PUSCH传输时，I_PHICH＝1，否则，I_PHICH＝0；mod表示取余符号；

表示向下取整符号。among them,

Indicates the group number of the PHICH resource;

Indicates the orthogonal sequence number of the PHICH resource; for the first TB of the PUSCH transmission with the corresponding PDCCH, or the PUSCH corresponding to the PDCCH, when the number of transmission blocks of the NACK is greater or smaller than the most recent PDCCH associated with the PUSCH The number of transport blocks indicated,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in the time slot; n _DMRS indicating a DM-RS offset, which is obtained according to a cyclic shift indicated in the DCI;

a spreading factor SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates a remnant symbol;

Indicates that the symbol is rounded down.

Alternatively, processor 81 invokes an execution instruction in memory 82 for performing the following operations:

Determining a time slot for transmitting uplink data;

Determining from the minimum F-PRB identifier in the smallest PRB index used in the first time slot of the time slot according to the number of the F-PRBs included in a single PRB, and the uplink data The PHICH resource used by the response information corresponding to the uplink data, the response information is used to indicate whether the base station has correctly received the uplink data.

The number of the F-PRBs included in a single PRB, and the minimum F-PRB identifier in the smallest PRB index used by the uplink data in the first slot of the time slot, Determining the PHICH resource used by the response information corresponding to the uplink data may include: according to the number of the F-PRBs included in a single PRB, the uplink data is in a first time slot of the time slot Determining the identification information of the F-PRB according to the identifier information of the F-PRB, and determining the response information corresponding to the uplink data, according to the identifier information of the F-PRB, the minimum F-PRB identifier in the minimum PRB index, and the number of the downlink resource block RBs. The PHICH resource used.

Further, according to the number of the F-PRBs included in a single PRB, the minimum F-PRB identifier in the smallest PRB index used by the uplink data in the first slot of the time slot, and Determining the identification information of the F-PRB, the number of the downlink RBs may include: determining the identification information of the F-PRB according to the following formula:

表示所述下行RB的个数。Wherein, I _F-PRB indicates identification information of the F-PRB; n _F-PRB indicates a minimum F-PRB identifier of the smallest PRB index used by the uplink data in the first slot of the time slot; N _F-PRB represents the number of F-PRBs contained in a single PRB;

Indicates the number of downlink RBs.

In addition, the determining, according to the identifier information of the F-PRB, the PHICH resource used by the response information corresponding to the uplink data, may include: determining, according to the following formula, the response information corresponding to the uplink data. The group number where the PHICH resource is located:

The orthogonal sequence number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

表示所述PHICH资源所在的组号；表示所述PHICH资源的正交序列号；对于有对应PDCCH的PUSCH传输的第一个TB，或者，没有对应PDCCH的PUSCH，当否定确认NACK的传输块个数大于或小于最近一次与PUSCH相关的PDCCH中指示的传输块个数，

对于有对应PDCCH的PUSCH传输的第二个TB，

表 示所述上行数据在所述时隙内中第一个时隙使用的所述最小PRB索引；n_DMRS表示DM-RS偏移，是根据DCI中指示的循环移位获得的；

表示所述PHICH资源使用的SF；

表示PHICH资源的组个数；对于TDD上行/下行配置0中，在子帧4或子帧9中具有PUSCH传输时，I_PHICH＝1，否则，I_PHICH＝0；mod表示取余符号；

表示向下取整符号。among them,

Indicates the group number of the PHICH resource; Indicates an orthogonal sequence number of the PHICH resource; for a first TB with a PUSCH transmission corresponding to a PDCCH, or a PUSCH corresponding to a PDCCH, when the number of transmission blocks that negatively acknowledge the NACK is greater or smaller than the most recent PUSCH-related The number of transport blocks indicated in the PDCCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

_Decoding the minimum PRB index used by the uplink data in a first time slot in the time slot; n _DMRS indicating a DM-RS offset, which is obtained according to a cyclic shift indicated in the DCI;

SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates a remnant symbol;

Indicates that the symbol is rounded down.

Furthermore, the processor 81 calls the execution instructions in the memory 82 for performing the following operations:

Determining a time slot for transmitting uplink data;

Determining a PHICH resource used by the response information corresponding to the uplink data according to a pre-configured DM-RS offset, and a minimum PRB index used by the uplink data in a first time slot of the time slot, Different DM-RS offsets are configured for user equipments that use different time slots in the same subframe, or use the same F-PRB but the same PRB index in the same subframe to transmit uplink data.

The determining, according to the pre-configured DM-RS offset, the minimum PRB index used by the uplink data in the first time slot of the time slot, determining the response information corresponding to the uplink data. The PHICH resource may include: obtaining the PHICH resource used by the response information corresponding to the uplink data according to the following formula

表示所述PHICH资源所在的组号；

表示所述PHICH资源的正交序列号；对于有对应PDCCH的PUSCH传输的第一个TB，或者，没有对应PDCCH的PUSCH，当NACK的传输块个数大于或小于最近一次与PUSCH相关的PDCCH中指示的传输块个数，

对于有对应PDCCH的PUSCH传输的第二个TB，

表示所述上行数据在所述时隙中第一个时隙内使用的所述最小PRB索引；n_DMRS表示所述预先配置的DM-RS偏移；

表示所述PHICH资源使用的SF；

表示PHICH资源的组个数；对于TDD上行/下行配置0中，在子帧4或子帧9中具有PUSCH传输时，I_PHICH＝1，否则，I_PHICH＝0；mod表示取余符号；

表示向下取整符号。among them,

Indicates the group number of the PHICH resource;

Indicates the orthogonal sequence number of the PHICH resource; for the first TB of the PUSCH transmission with the corresponding PDCCH, or the PUSCH corresponding to the PDCCH, when the number of transmission blocks of the NACK is greater or smaller than the most recent PDCCH associated with the PUSCH The number of transport blocks indicated,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in a first time slot of the time slot; n _DMRS indicating the pre-configured DM-RS offset;

SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates a remnant symbol;

Indicates that the symbol is rounded down.

Alternatively, in semi-persistent scheduling, the limit of the DM-RS offset equal to zero is cancelled.

The device for determining the PHICH resource in this embodiment may be used to perform the technical solution for determining the PHICH resource provided by any embodiment of the present invention, and the implementation principle and the technical effect are similar. I won't go into details here.

In the several embodiments provided herein, it should be understood that the disclosed apparatus and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit or module is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or modules may be used. Combinations can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or module, and may be electrical, mechanical or otherwise.

The modules described as separate components may or may not be physically separated. The components displayed as modules may or may not be physical modules, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

One of ordinary skill in the art will appreciate that all or part of the steps to implement the various method embodiments described above may be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims (22)

A method for determining a physical hybrid automatic repeat request indication channel PHICH resource, wherein the method is applied to PHICH resource allocation of a long-term evolution LTE system with a transmission interval TTI of less than 1 millisecond, the method comprising: Determining a time slot for transmitting uplink data; Determining, according to the identifier information of the time slot and the minimum physical resource block PRB index used by the uplink data in the time slot, the PHICH resource used by the response information corresponding to the uplink data, where the response information is used. Indicates whether the base station has correctly received the uplink data. The method according to claim 1, wherein the 1 millisecond TTI comprises M short TTIs, the M is an integer greater than or equal to 2, the time slot is the short TTI, and the time slot is according to the time slot. The identifier information and the minimum PRB index used by the uplink data in the time slot, before determining the PHICH resource used by the response information corresponding to the uplink data, the method further includes: And determining identifier information of the time slot according to the slot number of the time slot, the number of the M and the downlink resource block RB. The method according to claim 2, wherein the determining the identification information of the time slot according to the slot number of the time slot, the number of the M and the number of downlink RBs, including: The identification information of the time slot is determined according to the following formula:

Wherein, I _s represents the identification information of the time slot; n _s represents the time slot number, n _s is an integer greater than or equal to 0 and less than M, or n _s is greater than or equal to 0 and less than L×M An integer representing the number of subframes in a radio frame;

Indicates the number of downlink RBs; mod indicates the remainder symbol. The method according to claim 3, wherein the determining the response information corresponding to the uplink data according to the identification information of the time slot and the minimum PRB index used by the uplink data in the time slot The PHICH resources used, including: The group number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

Determining the PHICH resource used for the response information corresponding to the uplink data according to the following formula Source orthogonal sequence number:

In the formula,

Indicates the group number of the PHICH resource;

An orthogonal sequence number indicating the PHICH resource; a first transport block TB for a physical uplink shared channel PUSCH transmission corresponding to a physical downlink control channel PDCCH, or a PUSCH corresponding to a PDCCH, and a negative acknowledgement NACK transport block The number is greater than or less than the number of transport blocks indicated in the PDCCH associated with the most recent PUSCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in the time slot; n _DMRS indicating a demodulation reference signal DM-RS offset, which is obtained according to a cyclic shift indicated in the downlink control information DCI;

a spreading factor SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for time division duplex TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates redundancy symbol;

Indicates that the symbol is rounded down. A method for determining a physical hybrid automatic repeat request indication channel PHICH resource, wherein the method is applied to a scenario in which a fractional physical resource block F-PRB is introduced when a PHICH resource is allocated in a long term evolution LTE system, where the method includes : Determining a time slot for transmitting uplink data; Determining, according to the number of the F-PRBs included in a single physical resource block PRB, and the minimum F-PRB identifier in the smallest PRB index used in the first time slot of the time slot. a PHICH resource used by the response information corresponding to the uplink data, where the response information is used to indicate whether the base station has correctly received the uplink data. The method according to claim 5, wherein said according to said number of said F-PRBs included in a single PRB, and said uplink data is used in a first time slot of said time slots The minimum F-PRB identifier in the minimum PRB index, and the PHICH resource used for determining the response information corresponding to the uplink data, including: Determining, according to the number of the F-PRBs included in a single PRB, a minimum F-PRB identifier in a minimum PRB index used in a first slot of the time slot, and a downlink resource block RB Number, determine the identification information of the F-PRB; And determining, according to the identifier information of the F-PRB, a PHICH resource used by the response information corresponding to the uplink data. The method of claim 6 wherein said packet is based on a single PRB The number of the F-PRBs included, the minimum F-PRB identifier in the smallest PRB index used in the first slot of the time slot, and the number of downlink RBs, determining F- PRB identification information, including: The identification information of the F-PRB is determined according to the following formula:

Wherein, I _F-PRB indicates identification information of the F-PRB; n _F-PRB indicates a minimum F-PRB identifier of the smallest PRB index used by the uplink data in the first slot of the time slot; N _F-PRB represents the number of F-PRBs contained in a single PRB;

Indicates the number of downlink RBs. The method according to claim 7, wherein the determining, according to the identification information of the F-PRB, the PHICH resource used by the response information corresponding to the uplink data, includes: The group number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

The orthogonal sequence number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

In the formula,

Indicates the group number of the PHICH resource;

An orthogonal sequence number indicating the PHICH resource; a first transport block TB for a physical uplink shared channel PUSCH transmission corresponding to a physical downlink control channel PDCCH, or a PUSCH corresponding to a PDCCH, and a negative acknowledgement NACK transport block The number is greater than or less than the number of transport blocks indicated in the PDCCH associated with the most recent PUSCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in the first time slot in the time slot; n _DMRS indicating the demodulation reference signal DM-RS offset, which is according to the cyclic shift indicated in the downlink control information DCI acquired;

a spreading factor SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources;

Indicates the number of downlink resource block RBs; for time division duplex TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates Residual symbol;

Indicates that the symbol is rounded down. A method for determining a physical hybrid automatic repeat request indication channel PHICH resource, which is characterized in that it is applied to a PHICH resource allocation of a long-term evolution LTE system with a transmission interval TTI of less than 1 millisecond or a fractional physical resource when a PHICH resource is allocated in an LTE system. Block F-PRB field The method includes: Determining a time slot for transmitting uplink data; Determining, according to the pre-configured demodulation reference signal DM-RS offset, and the minimum PRB index used by the uplink data in the first slot of the time slot, determining response information corresponding to the uplink data The PHICH resource configures different DM-RS offsets for user equipments that use different time slots in the same subframe, or use the same F-PRB but the same PRB index in the same subframe to transmit uplink data. The method according to claim 9, wherein said determining is based on a pre-configured DM-RS offset, and wherein said uplink data is determined using a minimum PRB index used in a first time slot of said time slot The PHICH resource used by the response information corresponding to the uplink data includes: Obtaining the PHICH resource used by the response information corresponding to the uplink data according to the following formula

among them,

Indicates the group number of the PHICH resource;

An orthogonal sequence number indicating the PHICH resource; a first transport block TB for a physical uplink shared channel PUSCH transmission corresponding to a physical downlink control channel PDCCH, or a PUSCH corresponding to a PDCCH, and a negative acknowledgement NACK transport block The number is greater than or less than the number of transport blocks indicated in the PDCCH associated with the most recent PUSCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in a first time slot of the time slot; n _DMRS indicating the pre-configured DM-RS offset;

a spreading factor SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for time division duplex TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates redundancy symbol;

Indicates that the symbol is rounded down. Method according to claim 9 or 10, characterized in that, in the case of semi-persistent scheduling, the limitation that the DM-RS offset is equal to zero is cancelled. An apparatus for determining a physical hybrid automatic repeat request indication channel PHICH resource, wherein the apparatus is applied to a PHICH resource allocation of a Long Term Evolution (LTE) system with a transmission interval TTI of less than 1 millisecond, the apparatus comprising: a determining module, configured to determine a time slot for transmitting uplink data; a processing module, configured to determine, according to the identifier information of the time slot and a minimum physical resource block PRB index used by the uplink data in the time slot, a PHICH resource used by the response information corresponding to the uplink data, where The response information is used to indicate whether the base station has correctly received the uplink data. The apparatus according to claim 12, wherein the 1 millisecond TTI comprises an M short TTI, the M is an integer greater than or equal to 2, and the time slot is the short TTI, and the processing module is further configured to: And determining identifier information of the time slot according to the slot number of the time slot, the number of the M and the downlink resource block RB. The apparatus according to claim 13, wherein the processing module determines the identification information of the time slot when performing the number of slots according to the time slot, the number of the M and the downlink RB, Specifically for: The identification information of the time slot is determined according to the following formula:

Wherein, I _s represents the identification information of the time slot; n _s represents the time slot number, n _s is an integer greater than or equal to 0 and less than M, or n _s is greater than or equal to 0 and less than L×M An integer representing the number of subframes in a radio frame;

Indicates the number of downlink RBs; mod indicates the remainder symbol. The apparatus according to claim 14, wherein the processing module determines the uplink data according to the identification information according to the time slot and the minimum PRB index used by the uplink data in the time slot. When the corresponding PHICH resource used for the response information is used, it is specifically used to: The group number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

The orthogonal sequence number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

among them,

Indicates the group number of the PHICH resource;

An orthogonal sequence number indicating the PHICH resource; a first transport block TB for a physical uplink shared channel PUSCH transmission corresponding to a physical downlink control channel PDCCH, or a PUSCH corresponding to a PDCCH, and a negative acknowledgement NACK transport block The number is greater than or less than the number of transport blocks indicated in the PDCCH associated with the most recent PUSCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in the time slot; n _DMRS indicating a demodulation reference signal DM-RS offset, which is obtained according to a cyclic shift indicated in the downlink control information DCI;

a spreading factor SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for time division duplex TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates redundancy symbol;

Indicates that the symbol is rounded down. An apparatus for determining a physical hybrid automatic repeat request indication channel PHICH resource, wherein the apparatus is applied to a scenario of introducing a fractional physical resource block F-PRB when a PHICH resource is allocated in a Long Term Evolution (LTE) system, where the apparatus includes : a determining module, configured to determine a time slot for transmitting uplink data; a processing module, configured to use, according to the number of the F-PRBs included in a single physical resource block PRB, and a minimum F of the smallest PRB index used by the uplink data in the first time slot of the time slot a PRB identifier, which is used to determine a PHICH resource used by the response information corresponding to the uplink data, where the response information is used to indicate whether the base station has correctly received the uplink data. The device according to claim 16, wherein the processing module comprises: a first processing unit, configured to determine, according to the number of the F-PRBs included in a single PRB, a minimum F-PRB identifier in a minimum PRB index used by the uplink data in a first time slot in the time slot And the number of downlink resource blocks RB, determining the identification information of the F-PRB; The second processing unit is configured to determine, according to the identifier information of the F-PRB, a PHICH resource used by the response information corresponding to the uplink data. The device according to claim 17, wherein the first processing unit is specifically configured to: The identification information of the F-PRB is determined according to the following formula:

Wherein, I _F-PRB indicates identification information of the F-PRB; n _F-PRB indicates a minimum F-PRB identifier of the smallest PRB index used by the uplink data in the first slot of the time slot; N _F-PRB represents the number of F-PRBs contained in a single PRB;

Indicates the number of downlink RBs. The device according to claim 18, wherein the second processing unit is specifically configured to: The group number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

The orthogonal sequence number of the PHICH resource used for the response information corresponding to the uplink data is determined according to the following formula:

among them,

Indicates the group number of the PHICH resource;

An orthogonal sequence number indicating the PHICH resource; a first transport block TB for a physical uplink shared channel PUSCH transmission corresponding to a physical downlink control channel PDCCH, or a PUSCH corresponding to a PDCCH, and a negative acknowledgement NACK transport block The number is greater than or less than the number of transport blocks indicated in the PDCCH associated with the most recent PUSCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in the first time slot in the time slot; n _DMRS indicating the demodulation reference signal DM-RS offset, which is according to the cyclic shift indicated in the downlink control information DCI acquired;

a spreading factor SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for time division duplex TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates redundancy symbol;

Indicates that the symbol is rounded down. An apparatus for determining a physical hybrid automatic repeat request indication channel PHICH resource, which is characterized by being applied to PHICH resource allocation of a transmission interval TTI less than 1 millisecond in a long term evolution LTE system or introducing a fractional physical resource when allocating PHICH resources in an LTE system The scenario of the block F-PRB, the device includes: a determining module, configured to determine a time slot for transmitting uplink data; a processing module, configured to determine, according to the pre-configured demodulation reference signal DM-RS offset, and the minimum PRB index used by the uplink data in the first time slot of the time slot, to determine the uplink data The PHICH resource used for the response information is configured with different DM-RSs for user equipments that use different time slots in the same subframe, or use the same F-PRB in the same subframe but the same resource as the smallest PRB index to transmit uplink data. Offset. The device according to claim 20, wherein the processing module is specifically configured to: Obtaining the PHICH resource used by the response information corresponding to the uplink data according to the following formula

among them,

Indicates the group number of the PHICH resource;

An orthogonal sequence number indicating the PHICH resource; a first transport block TB for a physical uplink shared channel PUSCH transmission corresponding to a physical downlink control channel PDCCH, or a PUSCH corresponding to a PDCCH, and a negative acknowledgement NACK transport block The number is greater than or less than the number of transport blocks indicated in the PDCCH associated with the most recent PUSCH,

For the second TB of the PUSCH transmission with the corresponding PDCCH,

Representing the minimum PRB index used by the uplink data in a first time slot of the time slot; n _DMRS indicating the pre-configured DM-RS offset;

a spreading factor SF indicating the use of the PHICH resource;

Indicates the number of groups of PHICH resources; for time division duplex TDD uplink/downlink configuration 0, when there is PUSCH transmission in subframe 4 or subframe 9, I _PHICH =1, otherwise, I _PHICH =0; mod indicates redundancy symbol;

Indicates that the symbol is rounded down. The apparatus according to claim 20 or 21, wherein in the semi-persistent scheduling, the limitation that the DM-RS offset is equal to zero is canceled.

Images