CN103873215B

CN103873215B - Strengthen physical hybrid automatic repeat request indicator channel transmission method and device

Info

Publication number: CN103873215B
Application number: CN201210548120.6A
Authority: CN
Inventors: 弓宇宏; 孙云锋; 戴博; 鲁照华
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2012-12-17
Filing date: 2012-12-17
Publication date: 2017-12-05
Anticipated expiration: 2032-12-17
Also published as: CN103873215A; WO2014094477A1

Abstract

The invention provides one kind enhancing physical hybrid automatic repeat request indicator channel ePHICH transmission methods and device, this method to include：Network side determines to be mapped in ePHICH ePHICH resources, wherein, the ePHICH resources include N number of resource element group, each resource element group includes M resource element, all resource elements in one resource element group are located at same Physical Resource Block centering, for the Physical Resource Block to being allocated to end side by network side and/or being determined by network side with end side in the way of having made an appointment, M, N are the integer more than or equal to 1；Network side transmits information according to the ePHICH resources of determination to end side, pass through the present invention, the problem of not only solving the interference of physical hybrid automatic repeat request indicator channel in the prior art and not enough resource, and it is also preferable relative to method backwards compatibility used in the prior art.

Description

Method and device for transmitting enhanced physical hybrid automatic repeat request indicator channel

Technical Field

The present invention relates to the field of communications, and in particular, to an enhanced Physical hybrid automatic repeat request indicator Channel (ePHICH) transmission method and apparatus.

Background

The Long Term Evolution (Long Term Evolution, LTE for short) is an important project for the third generation partnership. When the LTE system employs a Normal Cyclic Prefix (Normal Cyclic Prefix), one slot includes uplink/downlink symbols with a length of 7, and when the LTE system employs an Extended Cyclic Prefix (Extended Cyclic Prefix), one slot includes uplink/downlink symbols with a length of 6.

Several downlink physical channels are defined in the LTE system as follows:

physical broadcast channel (Physical)Broadcast Channel, PBCH for short): the information carried by the Channel includes a frame number of the system, a downlink bandwidth of the system, a period of the Physical Hybrid repeat request Channel, and a parameter N for determining a number of Channel groups of a Physical Hybrid ARQ Indicator Channel (PHICH for short)_g∈{1/6,1/2,1,2}

Physical Multicast Channel (PMCH for short): the method is mainly used for supporting Multicast Broadcast Single Frequency Network (MBSFN) service and broadcasting the multimedia time-Frequency information to multiple users. PMCH can only transmit in MBSFN subframes and MBSFN areas.

Physical Downlink Shared Channel (PDSCH): for carrying downlink transmission data.

Physical Downlink Control Channel (PDCCH for short): the method is used for bearing uplink and downlink scheduling information and uplink power control information. The Physical Downlink Control Channels (PDCCHs) in LTE R8, R9, and R10 are mainly distributed in the first 1 or 2 or 3 or 4 Orthogonal Frequency Division Multiplexing (OFDM) symbols of a subframe, and the specific distribution needs to be configured according to different subframe types and the number of ports of a Common Reference Signal (CRS). Table 1 shows the number of downlink resource blocks configured according to different subframe types and the number of ports of CRS in the related artTable of OFDM symbol numbers of PDCCHs greater than 10 and not greater than 10, as shown in table 1.

TABLE 1

Physical Control Format Indication Channel (PCFICH for short): the carried information is used to indicate the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols for transmitting the PDCCH in one subframe, and is sent on the first OFDM symbol of the subframe, where the frequency position is determined by the system downlink bandwidth and the cell Identity (Identity, abbreviated as ID).

Physical hybrid repeat request indicator channel (PHICH): and the acknowledgement/negative acknowledgement (ACK/NACK) feedback information is used for carrying the uplink transmission data. The number and time-frequency position of the PHICH may be determined by a system message and a cell ID in a Physical Broadcast Channel (PBCH) of a downlink carrier where the PHICH is located.

In LTE, Common Reference Signals (CRS) are used for pilot measurement and demodulation, i.e., all users use CRS for channel estimation. When the CRS is adopted, the transmitting end needs to additionally inform the receiving end of a specific preprocessing mode adopted by the transmitted data, and the overhead of pilot frequency is large. In addition, in Multi-user Multi-input Multi-output (MU-MIMO), since a plurality of terminals use the same CRS, orthogonality of pilots cannot be achieved, and thus interference cannot be estimated. In LTE-a, to reduce pilot overhead, two types of reference signals are defined: a Demodulation Reference Signal (DMRS) and a Channel state information Reference Signal (CSI-RS), where the DMRS is used for Demodulation of a Physical Downlink Shared Channel (PDSCH). The CSI-RS is used for measuring Channel State Information (CSI for short), and is used for reporting Information such as a Channel Quality Indicator (CQI for short), a Precoding matrix Indicator (PMI for short), and a Rank Indicator (RI for short).

Fig. 1 is a schematic diagram of an LTE system physical Resource Block (RB) in the related art. As shown in fig. 1, one Resource Element (RE) is one subcarrier in one OFDM symbol, and one downlink Resource Block (RB) is composed of 12 consecutive subcarriers and 7 consecutive (6 when cyclic prefix is extended) OFDM symbols. One resource block is 180kHz in the frequency domain and one slot in the time domain. When performing resource allocation, two resource blocks (also referred to as physical resource block pairs) on one subframe (corresponding to two slots) are allocated as a basic unit. Fig. 2 is a schematic diagram of a pair of physical resource blocks of an LTE system in the related art, and as shown in fig. 2, resource locations of corresponding PDCCH, CRS, DMRS, and the like are also marked in fig. 2.

Under an LTE-a heterogeneous network, due to strong interference of different base station types, the problem of interference of a Macro base station (Macro eNodeB) to a micro base station (Pico) is considered, and a resource Muting method is proposed to solve the problem of mutual interference between different types of base stations, and specific resource Muting methods can be divided into a Subframe-based Muting (Muting) method, such as an empty Subframe (ABS) method, and a resource element-based method, such as a CRS Muting method. The existing method for solving the problem of mutual interference among different types of base stations by utilizing a resource silencing method not only increases the waste of resources, but also brings great limitation to scheduling, and particularly when ABS configuration of Macro eNodeB is considered, if more Pico is distributed, more ABS is configured for the Macro eNodeB, great influence is brought to the Macro eNodeB, the waste of resources is increased, and scheduling delay is also prolonged; moreover, although the interference of different control channel data resources can be reduced under ABS for the control channel, the interference problem of CRS resources and data resources cannot be solved, and the interference between data resources cannot be solved for the method of muting CRS. In addition, the existing method is also poor in backward compatibility and long in access delay.

More users may be introduced to transmit on the MBSFN subframe at the LTE R11 stage, which may cause insufficient capacity of a downlink control channel that can be carried by 2 OFDM symbols configured for MBSFN, and in order to ensure backward compatibility for R8/R9/R10 users, a new resource for transmitting control information needs to be developed on a Physical Downlink Shared Channel (PDSCH) resource, and a CoMP technology is introduced at the R11 stage, which can solve the interference problem between cells of different types in a space division manner, thereby saving resource overhead, avoiding resource waste caused by muting, and reducing scheduling limitation. However, according to the conventional time domain downlink control channel method, this problem cannot be solved by a space division method.

In the LTE R12 research, the new carrier type is likely to have no downlink control channel region and CRS, but in the conventional time-domain downlink control channel scheme, the downlink control channel is transmitted and demodulated in the downlink control channel region based on the CRS, so that the conventional downlink control channel cannot be well applied to the new carrier type. In addition, in Low cost MTC, it is likely that only a small bandwidth reception technology is supported, but since the conventional time domain downlink control channel manner is to discretely distribute control channel information over the full bandwidth, the small bandwidth reception cannot be well supported.

In view of the discussion progress of the latest conference, an enhanced physical downlink control Channel (ePDCCH) is introduced, which preliminarily solves the problem of capacity limitation and interference of a PDCCH, but no solution is provided at present for the problem of interference and resource insufficiency of a physical hybrid automatic repeat request indicator Channel (PHICH).

Disclosure of Invention

The invention provides a method and a device for transmitting an enhanced physical hybrid automatic repeat request indicator channel ePHICH (enhanced physical hybrid automatic repeat request indicator channel), which at least solve the problems of interference and insufficient resources of a physical hybrid automatic repeat request indicator channel (PHICH) in the prior art.

According to an aspect of the present invention, there is provided an ePHICH transmission method for an enhanced physical hybrid automatic repeat request indicator channel, including: determining an ePHICH resource mapped to the ePHICH by a network side, wherein the ePHICH resource comprises N resource element groups, each resource element group comprises M resource elements, all the resource elements in one resource element group are located in the same physical resource block pair, the physical resource block pair is configured to a terminal side by the network side and/or determined by the network side and the terminal side according to a predetermined mode, and M, N are integers which are more than or equal to 1; and the network side transmits information to the terminal side according to the determined ePHICH resource.

Preferably, the M resource elements included in each resource element group are at least one of: time domain fixes a symbol and M resource elements on M continuous subcarriers of frequency domain; fixing M resource elements on one subcarrier and M continuous symbols in time domain in a frequency domain; time domain fixes a symbol and M resource elements on M subcarriers with discrete frequency domain; frequency domain fixed one subcarrier and M resource elements on M symbols of time domain dispersion; m resource elements on M continuous symbols in time domain and n continuous subcarriers in frequency domain, wherein M is M × n, and M and n are integers greater than 1; m resource elements on b subcarriers with continuous a symbols in time domain and discrete frequency domain, wherein M is a × b, and a and b are integers greater than 1; the method comprises the steps of obtaining x discrete symbols in a time domain and M resource elements on y continuous subcarriers in a frequency domain, wherein M is x y, and x and y are integers larger than 1.

Preferably, different ePHICH resources are mapped to different ePHICH resources; and/or multiple ePHICHs are mapped to the same ePHICH resource by using different orthogonal codes.

Preferably, the orthogonal code is an orthogonal mask OCC or a constant envelope zero autocorrelation sequence CAZAC.

Preferably, when the length of the orthogonal code is M, the resource elements of each resource element group of the ePHICH are mapped according to the sequence from low to high in the frequency domain or from front to back in the time domain; and/or repeatedly mapping the resource elements of each resource element group of the ePHICH by taking the orthogonal codes as a unit according to the sequence of the frequency domain from low to high or the time domain from front to back when the length of the orthogonal codes is less than M.

Preferably, in a case that only a part of resources in a physical resource block pair for mapping an ePHICH resource are used for the ePHICH resource, the remaining resources are used for mapping a physical downlink shared channel PDSCH, an enhanced physical downlink control channel ePDCCH, or mapping no channel, where the remaining resources are resources other than the ePHICH resource, the resource for carrying a CRS, the resource for carrying a DMRS, the resource for mapping a PDCCH, and the resource for carrying a CSI-RS.

Preferably, before the network side determines ePHICH resources mapped to the ePHICH, the method further includes: the network side determines a physical resource block pair for mapping the ePHICH by at least one of the following modes: and the physical resource block pair for mapping the ePHICH is not a physical resource block pair for sending a physical broadcast channel, and the physical resource block pair for mapping the ePHICH is not a physical resource block pair for carrying a channel state information reference signal.

Preferably, after the network side determines the ePHICH resources mapped to the ePHICH, the method further includes: the network side informs the terminal side of the determined ePHICH resources through at least one of the following modes: notifying the ePHICH resource to the terminal side by adding a Radio Resource Control (RRC) signaling; notifying the ePHICH resource to the terminal side by a notification signaling reusing a resource of a zero power channel state information reference signal ZP-CSI-RS or a non-zero power channel state information reference signal NZP-CSI-RS; notifying the ePHICH resource to the terminal side by adopting a configuration and/or notification method similar to a zero power channel state information reference signal (ZP-CSI-RS) or a non-zero power signaling state information reference signal (NZP-CSI-RS).

According to another aspect of the present invention, there is provided an ePHICH transmission method for an enhanced physical hybrid automatic repeat request indicator channel, including: determining, by a terminal side, an ePHICH resource mapped to the ePHICH, wherein the ePHICH resource includes N resource element groups, each resource element group includes M resource elements, all resource elements in one resource element group are located in the same physical resource block pair, the physical resource block pair is configured to the terminal side by the network side and/or determined by the network side and the terminal side in a predetermined manner, and M, N are integers greater than or equal to 1; and the terminal side receives transmission information from the network side according to the determined ePHICH resource.

Preferably, different ePHICH resources are mapped to different ePHICH resources; and/or multiple ePHICHs are mapped to the same ePHICH resource by using different orthogonal code multiplexing.

Preferably, after the terminal side receives the transmission information from the network side according to the determined ePHICH resource, the method further includes: and under the condition that the M resource elements are not only used for mapping the ePHICH, the terminal side demodulates the ePHICH in a puncturing mode.

According to another aspect of the present invention, an apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission is provided, including: a first determining module, configured to determine, by a network side, an ePHICH resource mapped to the ePHICH, where the ePHICH resource includes N resource element groups, each resource element group includes M resource elements, all resource elements in one resource element group are located in a same physical resource block pair, the physical resource block pair is configured by the network side to a terminal side and/or determined by the network side and the terminal side in a predetermined manner, and M, N are integers greater than or equal to 1; and the first transmission module is used for the network side to transmit information to the terminal side according to the determined ePHICH resource.

Preferably, the first determining module is configured to determine the M resource elements included in each resource element group by at least one of: time domain fixes a symbol and M resource elements on M continuous subcarriers of frequency domain; fixing M resource elements on one subcarrier and M continuous symbols in time domain in a frequency domain; time domain fixes a symbol and M resource elements on M subcarriers with discrete frequency domain; frequency domain fixes one subcarrier and M resource elements on M symbols with discrete time domain; m resource elements on M continuous symbols in time domain and n continuous subcarriers in frequency domain, wherein M is M × n, and M and n are integers greater than 1; m resource elements on b subcarriers with continuous a symbols in time domain and discrete frequency domain, wherein M is a × b, and a and b are integers greater than 1; the method comprises the steps of obtaining x discrete symbols in a time domain and M resource elements on y continuous subcarriers in a frequency domain, wherein M is x y, and x and y are integers larger than 1.

Preferably, the first determining module comprises: a first mapping unit, configured to map different ePHICH resources to different ePHICH resources; and/or the second mapping unit is used for mapping a plurality of ePHICHs to the same ePHICH resource by using different orthogonal codes.

Preferably, the first determining module is further configured to determine that the orthogonal code is an orthogonal mask OCC or a constant amplitude zero autocorrelation sequence CAZAC.

Preferably, the first determining module further comprises: a third mapping unit, configured to map, when the length of the orthogonal code is M, the orthogonal code to resource elements of each resource element group of the ePHICH according to a sequence from low to high in a frequency domain or from front to back in a time domain; and/or, a fourth mapping unit, configured to repeatedly map the orthogonal code to the resource elements of each resource element group of the ePHICH in units of the orthogonal code according to a sequence from low to high in a frequency domain or from front to back in a time domain when the length of the orthogonal code is smaller than M.

Preferably, the first determining module is further configured to determine, when only a part of resources in a physical resource block pair mapping an ePHICH are used for an ePHICH resource, to use remaining resources for mapping a physical downlink shared channel PDSCH, an enhanced physical downlink control channel ePDCCH, or not performing mapping of any channel, where the remaining resources are resources other than the ePHICH resource, a resource for carrying a CRS, a resource for carrying a DMRS, a resource for mapping a PDCCH, and a resource for carrying a CSI-RS.

Preferably, the apparatus further comprises: a second determining module, configured to determine, by the network side, a physical resource block pair for mapping the ePHICH by at least one of: and the physical resource block pair for mapping the ePHICH is not a physical resource block pair for sending a physical broadcast channel, and the physical resource block pair for mapping the ePHICH is not a physical resource block pair for carrying a channel state information reference signal.

Preferably, the apparatus further comprises: a notifying module, configured to notify, by the network side, the determined ePHICH resource to the terminal side by at least one of the following manners: notifying the ePHICH resource to the terminal side by adding a Radio Resource Control (RRC) signaling; notifying the ePHICH resource to the terminal side by a notification signaling reusing a resource of a zero power channel state information reference signal ZP-CSI-RS or a non-zero power channel state information reference signal NZP-CSI-RS; notifying the ePHICH resource to the terminal side by adopting a configuration and/or notification method similar to a zero power channel state information reference signal (ZP-CSI-RS) or a non-zero power signaling state information reference signal (NZP-CSI-RS).

According to another aspect of the present invention, an apparatus for transmitting an enhanced physical hybrid automatic repeat request indicator channel ePHICH includes: a third determining module, configured to determine, by a terminal side, an ePHICH resource mapped to the ePHICH, where the ePHICH resource includes N resource element groups, each resource element group includes M resource elements, all resource elements in one resource element group are located in a same physical resource block pair, the physical resource block pair is configured by a network side to the terminal side and/or determined by the network side and the terminal side in a predetermined manner, and M, N are integers greater than or equal to 1; a first receiving module, configured to receive, by the terminal side, transmission information from a network side according to the determined ePHICH resource.

Preferably, the third determining module is configured to determine the M resource elements included in each resource element group by at least one of: time domain fixes a symbol and M resource elements on M continuous subcarriers of frequency domain; fixing M resource elements on one subcarrier and M continuous symbols in time domain in a frequency domain; time domain fixes a symbol and M resource elements on M subcarriers with discrete frequency domain; frequency domain fixes one subcarrier and M resource elements on M symbols with discrete time domain; m resource elements on M continuous symbols in time domain and n continuous subcarriers in frequency domain, wherein M is M × n, and M and n are integers greater than 1; m resource elements on b subcarriers with continuous a symbols in time domain and discrete frequency domain, wherein M is a × b, and a and b are integers greater than 1; the method comprises the steps of obtaining x discrete symbols in a time domain and M resource elements on y continuous subcarriers in a frequency domain, wherein M is x y, and x and y are integers larger than 1.

Preferably, the third determining module comprises: a fifth mapping unit, configured to map different ePHICH resources to different ePHICH resources; and/or a sixth mapping unit, configured to map multiple ePHICH resources to the same ePHICH resource by using different orthogonal code multiplexing.

Preferably, the third determining module further comprises: a seventh mapping unit, configured to map, when the length of the orthogonal code is M, the orthogonal code to resource elements of each resource element group of the ePHICH according to a sequence from a low frequency domain to a high frequency domain or a sequence from a front time domain to a back time domain; and/or, an eighth mapping unit, configured to repeatedly map the orthogonal code to the resource elements of each resource element group of the ePHICH in units of the orthogonal code according to a sequence from low to high in a frequency domain or from front to back in a time domain when the length of the orthogonal code is smaller than M.

Preferably, the apparatus further comprises: a demodulation module, configured to, when the M resource elements are not only used for mapping the ePHICH, demodulate the ePHICH by using a puncturing manner at the terminal side.

According to the invention, a network side is adopted to determine ePHICH resources mapped on the ePHICH, wherein the ePHICH resources comprise N resource element groups, each resource element group comprises M resource elements, all the resource elements in one resource element group are positioned in the same physical resource block pair, the physical resource block pair is configured to a terminal side by the network side and/or determined by the network side and the terminal side in a predetermined mode, and M, N are integers which are more than or equal to 1; the network side transmits information to the terminal side according to the determined ePHICH resources, so that the problems of interference and insufficient resources of a physical hybrid automatic repeat request indication channel in the prior art are solved, and backward compatibility is better compared with the method adopted in the prior art.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a diagram of a physical resource block RB of an LTE system in the related art;

fig. 2 is a diagram of a pair of physical resource blocks of an LTE system in the related art;

fig. 3 is a first flowchart of an ePHICH transmission method according to an embodiment of the present invention;

fig. 4 is a flowchart ii of an ePHICH transmission method according to an embodiment of the present invention;

fig. 5 is a block diagram of a first structural diagram of an apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention;

fig. 6 is a block diagram of a preferred structure of the first determining module 52 in the apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention;

fig. 7 is a block diagram of a preferred structure of the first determining module 52 in the apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention;

fig. 8 is a block diagram of a preferred structure of an apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention;

fig. 9 is a block diagram of a preferred structure of an enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission apparatus according to an embodiment of the present invention;

fig. 10 is a block diagram of a second structural diagram of an apparatus for transmitting an enhanced physical hybrid automatic repeat request indicator channel ePHICH according to an embodiment of the present invention;

fig. 11 is a block diagram of a preferred structure of the third determining module 102 in an apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention;

fig. 12 is a block diagram of a preferred structure of the third determining module 102 in an apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention;

fig. 13 is a block diagram of a preferred structure of an apparatus for transmitting an enhanced physical hybrid automatic repeat request indicator channel ePHICH according to an embodiment of the present invention;

fig. 14 is a schematic diagram of a resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a first preferred embodiment of the present invention;

fig. 15 is a schematic diagram of a resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a second preferred embodiment of the present invention;

fig. 16 is a schematic diagram of a resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a third preferred embodiment of the present invention;

fig. 17 is a schematic diagram of a resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a fourth preferred embodiment of the present invention;

fig. 18 is a schematic diagram of a resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a fifth preferred embodiment of the present invention;

fig. 19 is a schematic diagram of a resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a sixth preferred embodiment of the present invention;

fig. 20 is a diagram illustrating a resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a seventh preferred embodiment of the present invention;

fig. 21 is a schematic diagram of a resource mapping pattern for forming a resource element group according to every three consecutive subcarriers in each physical resource block pair according to the preferred embodiment of the present invention;

fig. 22 is a schematic diagram of a resource mapping pattern for every seven consecutive symbols in the time domain and every six consecutive subcarriers in the frequency domain per each physical resource block pair according to a preferred embodiment of the present invention;

fig. 23 is a schematic diagram of a resource mapping pattern for forming a resource element group according to every three discrete subcarriers in each physical resource block pair according to the preferred embodiment of the present invention;

fig. 24 is a schematic diagram of a resource mapping pattern for every seven consecutive symbols in the time domain and every six discrete subcarriers in the frequency domain per each physical resource block pair according to a preferred embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In this embodiment, a method for transmitting an enhanced physical hybrid automatic repeat request indicator channel ePHICH is provided, and fig. 3 is a first flowchart of the method for transmitting an enhanced physical hybrid automatic repeat request indicator channel ePHICH according to the embodiment of the present invention, as shown in fig. 3, the flowchart includes the following steps:

step S302, a network side determines ePHICH resources mapped on an ePHICH, wherein the ePHICH resources comprise N resource element groups, each resource element group comprises M resource elements, all the resource elements in one resource element group are located in the same physical resource block pair, the physical resource block pair is configured to a terminal side by the network side and/or determined by the network side and the terminal side according to a predetermined mode, and M, N are integers which are more than or equal to 1;

step S304, the network side transmits information to the terminal side according to the determined ePHICH resource.

Through the steps, according to the newly defined ePHICH, the newly defined ePHICH is subjected to resource mapping, so that the problems of interference and insufficient resources of a physical hybrid automatic repeat request indication channel in the prior art are solved, and backward compatibility is better compared with the method adopted in the prior art.

Preferably, the physical resource block pair for mapping the ePHICH may be configured by the network side to the terminal side, or may be determined by the network side and the terminal side in a pre-agreed manner, where the determination in the pre-agreed manner may be that the network side and the terminal side agree the physical resource block pair in advance, or that the network side and the terminal side agree the physical resource block pair in advance, and then the network side and the terminal side determine the physical resource block pair for mapping the ePHICH according to the manner. In addition, the manner of M resource elements included in each resource element group may be various, for example, at least one of the following manners may be adopted: time domain fixes a symbol and M resource elements on M continuous subcarriers of frequency domain; fixing M resource elements on one subcarrier and M continuous symbols in time domain in a frequency domain; time domain fixes a symbol and M resource elements on M subcarriers with discrete frequency domain; frequency domain fixed one subcarrier and M resource elements on M symbols of time domain dispersion; m resource elements on M continuous symbols in time domain and n continuous subcarriers in frequency domain, wherein M is M × n, and M and n are integers greater than 1; m resource elements on b subcarriers with continuous a symbols in time domain and discrete frequency domain, wherein M is a × b, and a and b are integers greater than 1; the method comprises the steps of obtaining x discrete symbols in a time domain and M resource elements on y continuous subcarriers in a frequency domain, wherein M is x y, and x and y are integers larger than 1. In addition, different ePHICHs are mapped to different ePHICH resources; and/or multiple ePHICHs are mapped to the same ePHICH resource by using different orthogonal codes.

The Orthogonal code may be a plurality of types, for example, the Orthogonal code may be an Orthogonal code (OCC) or a constant envelope zero auto-correlation sequence (CAZAC). Under the condition that the length of the orthogonal code is M, mapping the orthogonal code to the resource elements of each resource element group of the ePHICH according to the sequence of a frequency domain from low to high or a time domain from front to back; and/or repeatedly mapping the resource elements of each resource element group of the ePHICH by taking the orthogonal codes as a unit according to the sequence of the frequency domain from low to high or the time domain from front to back when the length of the orthogonal codes is less than M.

And under the condition that only part of resources in the physical resource block pair for mapping the ePHICH are used for ePHICH resources, the rest resources are preferably used for mapping a Physical Downlink Shared Channel (PDSCH), an enhanced physical downlink control channel (ePDCCH) or not mapping any channel, wherein the rest resources are resources except the ePHICH resources, the resources for carrying CRS, the resources for carrying DMRS, the resources for mapping PDCCH and the resources for carrying CSI-RS.

Preferably, before the network side determines the ePHICH resources mapped to the ePHICH, the network side may determine the physical resource block pair for mapping the ePHICH in various ways, for example, in addition to the above description: the network side can determine the physical resource block pair in a way of configuring resources for the terminal side, the network side can also determine that the physical resource block pair mapping the ePHICH is not the physical resource block pair for sending the physical broadcast channel in a way of negotiating with the terminal side in advance, the network side can also determine that the physical resource block pair mapping the ePHICH is not the physical resource block pair for carrying the channel state information reference signal, namely, the physical resource block pair for sending the physical broadcast channel and the physical resource block pair for carrying the channel state information reference signal are excluded, so that the interference to the physical broadcast channel and the channel state information reference signal channel is effectively reduced.

After the network side determines the ePHICH resources mapped to the ePHICH, the network side may further notify the determined ePHICH resources to the terminal side through multiple manners: for example, the network side may notify the ePHICH resource to the terminal side through a Radio Resource Control (RRC) signaling, preferably, the new rrc signaling is user-specific (UE-specific), for example, the network side may further notify the ePHICH resource to the terminal side by a notification signaling reusing a resource of a Zero Power CSI reference signal (Zero Power CSI-RS, abbreviated ZP-CSI-RS) or a non-Zero Power CSI reference signal (non Zero Power CSI-RS, abbreviated NZP-CSI-RS), and for example, the network side may further notify the ePHICH resource to the terminal side by using a configuration and/or notification method similar to the Zero Power CSI reference signal (ZP-CSI-RS) or the non-Zero Power signaling CSI reference signal (NZP-CSI-RS).

In this embodiment, a method for transmitting an enhanced physical hybrid automatic repeat request indicator channel ePHICH is further provided, and fig. 4 is a second flowchart of the method for transmitting an enhanced physical hybrid automatic repeat request indicator channel ePHICH according to the embodiment of the present invention, as shown in fig. 4, the method includes the following steps:

step S402, the terminal side determines ePHICH resources mapped on ePHICH, wherein the ePHICH resources comprise N resource element groups, each resource element group comprises M resource elements, all the resource elements in one resource element group are located in the same physical resource block pair, the physical resource block pair is configured to the terminal side by the network side and/or determined by the network side and the terminal side according to a predetermined mode, and M, N are integers which are more than or equal to 1;

step S404, the terminal side receives the transmission information from the network side according to the determined ePHICH resource.

Preferably, there are multiple ways for the M resource elements included in each resource element group, for example, at least one of the following ways may be adopted: time domain fixes a symbol and M resource elements on M continuous subcarriers of frequency domain; fixing M resource elements on one subcarrier and M continuous symbols in time domain in a frequency domain; time domain fixes a symbol and M resource elements on M subcarriers with discrete frequency domain; frequency domain fixed one subcarrier and M resource elements on M symbols of time domain dispersion; m resource elements on M continuous symbols in time domain and n continuous subcarriers in frequency domain, wherein M is M × n, and M and n are integers greater than 1; m resource elements on b subcarriers with continuous a symbols in time domain and discrete frequency domain, wherein M is a × b, and a and b are integers greater than 1; the method comprises the steps of obtaining x discrete symbols in a time domain and M resource elements on y continuous subcarriers in a frequency domain, wherein M is x y, and x and y are integers larger than 1.

Wherein different ePHICHs are mapped to different ePHICH resources; and/or multiple ePHICHs are mapped to the same ePHICH resource by using different orthogonal code multiplexing. Under the condition that the length of the orthogonal code is M, mapping the orthogonal code to the resource elements of each resource element group of the ePHICH according to the sequence of a frequency domain from low to high or a time domain from front to back; and/or repeatedly mapping the resource elements of each resource element group of the ePHICH by taking the orthogonal codes as a unit according to the sequence of the frequency domain from low to high or the time domain from front to back when the length of the orthogonal codes is less than M.

It should be noted that, after the terminal side receives the transmission information from the network side according to the determined ePHICH resource, and in the case that the M resource elements are not only used for mapping the ePHICH, the terminal side demodulates the ePHICH in a puncturing manner.

In this embodiment, an apparatus for transmitting an enhanced physical hybrid automatic repeat request indicator channel ePHICH is further provided, where the apparatus is used to implement the foregoing embodiments and preferred embodiments, and details of the foregoing description are omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 5 is a first structural block diagram of an apparatus for transmitting an enhanced physical hybrid automatic repeat request indicator channel ePHICH according to an embodiment of the present invention, and as shown in fig. 5, the apparatus includes a first determining module 52 and a first transmitting module 54, which will be described below.

A first determining module 52, configured to determine, by the network side, an ePHICH resource mapped to an ePHICH, where the ePHICH resource includes N resource element groups, each resource element group includes M resource elements, all resource elements in one resource element group are located in a same physical resource block pair, the physical resource block pair is configured by the network side to the terminal side and/or determined by the network side and the terminal side in a predetermined manner, and M, N are integers greater than or equal to 1; and a first transmission module 54, connected to the first determining module 52, configured to transmit information to the terminal side by the network side according to the determined ePHICH resource.

Preferably, the first determining module is further configured to determine the M resource elements included in each resource element group by at least one of: time domain fixes a symbol and M resource elements on M continuous subcarriers of frequency domain; fixing M resource elements on one subcarrier and M continuous symbols in time domain in a frequency domain; time domain fixes a symbol and M resource elements on M subcarriers with discrete frequency domain; frequency domain fixes one subcarrier and M resource elements on M symbols with discrete time domain; m resource elements on M continuous symbols in time domain and n continuous subcarriers in frequency domain, wherein M is M × n, and M and n are integers greater than 1; m resource elements on b subcarriers with continuous a symbols in time domain and discrete frequency domain, wherein M is a × b, and a and b are integers greater than 1; the method comprises the steps of obtaining x discrete symbols in a time domain and M resource elements on y continuous subcarriers in a frequency domain, wherein M is x y, and x and y are integers larger than 1.

Fig. 6 is a block diagram of a preferred structure of a first determining module 52 in an apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention, as shown in fig. 6, the first determining module 52 includes: the first mapping unit 62 and/or the second mapping unit 64 will be described below with respect to the first determination module 52.

A first mapping unit 62, configured to map different ePHICH resources to different ePHICH resources; and/or the second mapping unit 64 is configured to map multiple ePHICH resources onto the same ePHICH resource by using different orthogonal codes.

Preferably, the first determining module 52 is further configured to determine that the orthogonal code is an orthogonal mask OCC or a constant amplitude zero autocorrelation sequence CAZAC.

Fig. 7 is a block diagram of a preferred structure of the first determining module 52 in the apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention, as shown in fig. 7, the first determining module 52 includes, in addition to the first mapping unit 62 and/or the second mapping unit 64: the third mapping unit 72 and/or the fourth mapping unit 74, the preferred configuration of which is described below.

A third mapping unit 72, configured to map, when the length of the orthogonal code is M, the orthogonal code to the resource elements of each resource element group of the ePHICH in the order from low to high in the frequency domain or from front to back in the time domain; and/or, the fourth mapping unit 74 is configured to repeatedly map the orthogonal code to the resource elements of each resource element group of the ePHICH in the order of frequency domain from low to high or time domain from front to back in the unit of the orthogonal code when the length of the orthogonal code is smaller than M.

Preferably, the first determining module 52 is further configured to determine, when only a part of resources in a physical resource block pair for mapping an ePHICH resource are used for the ePHICH resource, to use remaining resources for mapping a physical downlink shared channel PDSCH, an enhanced physical downlink control channel ePDCCH, or not performing mapping of any channel, where the remaining resources are resources other than the ePHICH resource, a resource for carrying a CRS, a resource for carrying a DMRS, a resource for mapping a PDCCH, and a resource for carrying a CSI-RS.

Fig. 8 is a block diagram of a preferred structure of an apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention, as shown in fig. 8, the apparatus includes, in addition to all modules shown in fig. 5: a second determining module 82, where the second determining module 82 is connected to the first determining module 52, and configured to determine, by the network side, a physical resource block pair for mapping the ePHICH by at least one of: the physical resource block pair mapping the ePHICH is not a physical resource block pair for sending a physical broadcast channel, and the physical resource block pair mapping the ePHICH is not a physical resource block pair for carrying a channel state information reference signal.

Fig. 9 is a block diagram of a preferred structure of an apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention, as shown in fig. 9, the apparatus includes, in addition to all modules shown in fig. 5: a notification module 92, where the notification module 92 is connected to the first determining module 52 and the first transmitting module 54, and configured to notify the terminal side of the determined ePHICH resource through at least one of the following manners: notifying the ePHICH resource to the terminal side by adding a Radio Resource Control (RRC) signaling; notifying the ePHICH resource to a terminal side through a notification signaling reusing a resource of a zero-power channel state information reference signal ZP-CSI-RS or a non-zero-power channel state information reference signal NZP-CSI-RS; and informing the ePHICH resources to the terminal side by adopting a configuration and/or informing method similar to a zero-power channel state information reference signal ZP-CSI-RS or a non-zero-power signaling state information reference signal NZP-CSI-RS.

In this embodiment, an apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission is further provided, and fig. 10 is a block diagram of a structure of an apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention, as shown in fig. 10, the apparatus includes a second determining module 102 and a second transmitting module 104, and the apparatus is described below.

A third determining module 102, configured to determine, by a terminal side, an ePHICH resource mapped to an ePHICH, where the ePHICH resource includes N resource element groups, each resource element group includes M resource elements, all resource elements in one resource element group are located in a same physical resource block pair, the physical resource block pair is configured by a network side to the terminal side and/or determined by the network side and the terminal side in a predetermined manner, and M, N are integers greater than or equal to 1; a first receiving module 104, connected to the third determining module 102, configured to receive, by the terminal side, transmission information from the network side according to the determined ePHICH resource.

Preferably, the third determining module 102 is further configured to determine the M resource elements included in each resource element group by at least one of: time domain fixes a symbol and M resource elements on M continuous subcarriers of frequency domain; fixing M resource elements on one subcarrier and M continuous symbols in time domain in a frequency domain; time domain fixes a symbol and M resource elements on M subcarriers with discrete frequency domain; frequency domain fixes one subcarrier and M resource elements on M symbols with discrete time domain; m resource elements on M continuous symbols in time domain and n continuous subcarriers in frequency domain, wherein M is M × n, and M and n are integers greater than 1; m resource elements on b subcarriers with continuous a symbols in time domain and discrete frequency domain, wherein M is a × b, and a and b are integers greater than 1; the method comprises the steps of obtaining x discrete symbols in a time domain and M resource elements on y continuous subcarriers in a frequency domain, wherein M is x y, and x and y are integers larger than 1.

Fig. 11 is a block diagram of a preferred structure of a third determining module 102 in an apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention, as shown in fig. 11, the third determining module 102 includes: the fifth mapping unit 112 and/or the sixth mapping unit 114, the preferred configuration of which is described below.

A fifth mapping unit 112, configured to map different ePHICH resources to different ePHICH resources; and/or a sixth mapping unit 114, configured to map multiple ePHICH resources onto the same ePHICH resource by using different orthogonal code multiplexing.

Fig. 12 is a block diagram of a preferred structure of a third determining module 102 in an apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention, as shown in fig. 12, the third determining module 102 includes, in addition to the fifth mapping unit 112 and/or the sixth mapping unit 114 in fig. 11: a seventh mapping unit 122, configured to map, when the length of the orthogonal code is M, the orthogonal code to the resource elements of each resource element group of the ePHICH according to the sequence from low to high in the frequency domain or from front to back in the time domain; and/or, the eighth mapping unit 124 is configured to, when the length of the orthogonal code is smaller than M, repeatedly map the orthogonal code to the resource elements of each resource element group of the ePHICH in the order from low to high in the frequency domain or from front to back in the time domain, in units of the orthogonal code.

Fig. 13 is a block diagram of a preferred structure of an apparatus for enhanced physical hybrid automatic repeat request indicator channel ePHICH transmission according to an embodiment of the present invention, as shown in fig. 13, the apparatus includes, in addition to all modules shown in fig. 10: a demodulation module 132, where the demodulation module 132 is configured to demodulate the ePHICH by using a puncturing manner on the terminal side when the M resource elements are not only used for mapping the ePHICH.

In the preferred embodiment, a resource mapping method of an enhanced physical hybrid automatic repeat request indicator channel ePHICH is provided, and the method may be applied to an LTE system and an advanced Long Term evolution system (Long Term evolution advanced, abbreviated as LTE-a) in 3 GPP.

The method aims at the problems of interference and insufficient resources of a physical hybrid automatic repeat request indicator channel (PHICH) in the related art. The resource mapping method for the enhanced physical hybrid automatic repeat request indicator channel provided in this embodiment includes: an enhanced physical hybrid automatic repeat request indicator channel Resource is composed of N Resource Element groups (REC for short), each Resource Element group is composed of M Resource elements (RE for short), all Resource elements in one Resource Element group are located in the same physical Resource block pair, and the N Resource Element groups constituting an enhanced physical hybrid automatic repeat request indicator channel are located in the same or different physical Resource block pairs. M and N are integers which are more than or equal to 1, and preferably, the value of N can be multiples of 1, 2 and 2, or multiples of 3 or 3. The Physical Resource block pair refers to two Physical Resource blocks (PRB for short) with the same frequency domain position in one subframe, and is shown in fig. 2.

The physical resource block for enhancing the transmission of the physical hybrid automatic repeat request channel is configured to the terminal side by the network side or is pre-agreed by the network side and the terminal side.

Preferably, each resource element group may be formed by four resource elements (i.e., M = 4) that are consecutive in a frequency domain or a time domain, and the four resource elements are all resource elements of a non-Common Reference Signal (CRS), a non-demodulation reference signal (DMRS), a non-Physical Downlink Control Channel (PDCCH), and a non-channel state information reference signal (CSI-RS); a plurality of enhanced physical hybrid automatic repeat request indication channels are mapped to the same enhanced physical hybrid automatic repeat request indication channel resource to form an enhanced physical hybrid automatic repeat request indication channel group, wherein the enhanced physical hybrid automatic repeat request indication channels belonging to the enhanced physical hybrid automatic repeat request indication channel group are multiplexed through different orthogonal masks OCC; for example, the length of the orthogonal mask may be four, and the four resource elements of each resource element group of the enhanced physical hybrid automatic repeat request indicator channel are sequentially mapped to the four resource elements of each resource element group of the enhanced physical hybrid automatic repeat request indicator channel in a manner that a frequency domain is from low to high or a time domain is from front to back.

Preferably, each resource element group may also be formed by two resource elements (i.e., M = 2) that are consecutive in a frequency domain or a time domain, and both of the two resource elements are resource elements of a non-Common Reference Signal (CRS), a non-demodulation reference signal (DMRS), a non-downlink physical control channel (PDCCH), and a non-channel state information reference signal (CSI-RS); a plurality of enhanced physical hybrid automatic repeat request indication channels are mapped to the same enhanced physical hybrid automatic repeat request indication channel resource to form an enhanced physical hybrid automatic repeat request indication channel group, wherein the enhanced physical hybrid automatic repeat request indication channels belonging to the enhanced physical hybrid automatic repeat request indication channel group are multiplexed by different orthogonal masks; for example, the length of the orthogonal mask may be two, and the orthogonal mask is sequentially mapped to two resource elements of each resource element group of the enhanced physical hybrid automatic repeat request indicator channel in a frequency domain from low to high or a time domain from front to back.

Preferably, each resource element group is composed of four resource elements which are continuous in time/frequency domain, wherein any two resource elements are continuous in frequency domain or continuous in time domain, and the four resource elements are all non-Common Reference Signals (CRS), non-demodulation reference signals (DMRS), available resource elements of a non-downlink physical control channel (PDCCH), and non-channel state information (CSI-RS) reference signals; a plurality of enhanced physical hybrid automatic repeat request indication channels are mapped to the same enhanced physical hybrid automatic repeat request indication channel resource to form an enhanced physical hybrid automatic repeat request indication channel group, wherein the enhanced physical hybrid automatic repeat request indication channels belonging to the enhanced physical hybrid automatic repeat request indication channel group are multiplexed by different orthogonal masks; the length of the orthogonal mask is four, and the orthogonal mask is sequentially mapped to four resource elements of each resource element group of the enhanced physical hybrid automatic repeat request indicator channel according to a mode that a frequency domain is first and then a time domain is carried out, and the frequency domain is from low to high or clockwise or anticlockwise.

Preferably, each resource element group is formed by all resource elements on one or more symbols in the time domain and/or one or more subcarriers in the frequency domain in one physical resource block pair; a plurality of enhanced physical hybrid automatic repeat request indication channels are mapped to the same enhanced physical hybrid automatic repeat request indication channel resource to form an enhanced physical hybrid automatic repeat request indication channel group, wherein the enhanced physical hybrid automatic repeat request indication channels belonging to the enhanced physical hybrid automatic repeat request indication channel group are multiplexed by different orthogonal code sequences; the length of the orthogonal code sequence is equal to the number of resource elements in each resource element group, and the orthogonal code sequence is mapped to the resource elements of each resource element group of the enhanced physical hybrid automatic repeat request indicator channel in a mode of firstly mapping the frequency domain to the time domain and then mapping the frequency domain from low to high or firstly mapping the time domain to the frequency domain and then mapping the time domain to the resource elements of each resource element group of the enhanced physical hybrid automatic repeat request indicator channel from front to back.

Preferably, each resource element group is formed by all resource elements on one or more symbols in the time domain and/or one or more subcarriers in the frequency domain in one physical resource block pair; a plurality of enhanced physical hybrid automatic repeat request indication channels are mapped to the same enhanced physical hybrid automatic repeat request indication channel resource to form an enhanced physical hybrid automatic repeat request indication channel group, wherein the enhanced physical hybrid automatic repeat request indication channels belonging to the enhanced physical hybrid automatic repeat request indication channel group are multiplexed by different orthogonal masks; the length of the orthogonal mask is two, and every two resource elements which are continuous in frequency domain are sequentially and repeatedly mapped to each resource element group of the enhanced physical hybrid automatic repeat request indication channel in sequence by using a group of every two resource elements which are continuous in frequency domain from low to high according to a mode that the frequency domain is first and then the time domain is from low to high, or every two resource elements which are continuous in time domain are sequentially and repeatedly mapped to each resource element group of the enhanced physical hybrid automatic repeat request indication channel in sequence by using a group of every two resource elements which are continuous in time domain from time domain to frequency domain and from front to back.

Preferably, each resource element group is formed by all resource elements on one or more symbols in the time domain and/or one or more subcarriers in the frequency domain in one physical resource block pair; an enhanced physical hybrid automatic repeat request channel is mapped to an enhanced physical hybrid automatic repeat request indicator channel resource, and the resources occupied by different enhanced physical hybrid automatic repeat request channels are not overlapped or covered with each other.

Preferably, the enhanced physical hybrid automatic repeat request channel is not transmitted on physical resource blocks on which the physical broadcast channel is transmitted.

Preferably, the subframe in which the enhanced physical hybrid automatic repeat request channel is transmitted is a subframe in which a non-channel state information reference signal is transmitted.

Preferably, if a downlink physical control channel (PDCCH) or a Common Reference Signal (CRS) or a demodulation reference signal (DMRS) or a channel state information reference signal (CSI-RS) is simultaneously transmitted on resource elements in a resource element group of the enhanced physical hybrid automatic repeat request channel, the enhanced physical hybrid automatic repeat request channel is demodulated in a puncturing manner on the resource elements.

Preferably, if only part of the resources in the physical resource block pair for the enhanced physical hybrid automatic repeat request channel are used for resource mapping of the enhanced physical hybrid automatic repeat request channel, the remaining resources are used for transmitting a Physical Downlink Shared Channel (PDSCH) or an enhanced physical downlink control channel (ePDCCH) or not transmitting any information. The remaining resources are remaining resource elements excluding a Common Reference Signal (CRS), a demodulation reference signal (DMRS), a Physical Downlink Control Channel (PDCCH), and a channel state information reference signal (CSI-RS) in addition to the enhanced physical hybrid automatic repeat request channel resources.

It should be noted that the mapping resource of ePHICH is not limited to the first one or two or three or four symbols in each physical resource block pair, but may be any resource element in each physical resource block pair.

For Distributed (Distributed) ePHICH transmission, N resource element groups constituting one ePHICH resource are Distributed as discretely as possible among a plurality of physical resource block pairs allocated to the ePHICH. For example, there are 8 resource element groups and 4 physical resource block pairs, assuming that the resource element groups are sequentially indexed by 0 to 7 and the physical resource block pairs are sequentially indexed by 0 to 3, for example, the resource element groups of the ePHICH may be, according to the discrete distribution rule: the resource element group {0,4} is distributed on the physical resource block pair 0, the resource element group {1,5} is distributed on the physical resource block pair 1, the resource element group {2,6} is distributed on the physical resource block pair 2, and the resource element group {3,7} is distributed on the physical resource block pair 3.

For Localized (Localized) ePHICH transmission, the N resource element groups that constitute one ePHICH resource are usually located in the same physical resource block pair. Multiple ePHICH resources may be mapped on the same ePHICH resource to form an ePHICH group, but ePHICH groups in the same ePHICH group need to be multiplexed by different orthogonal codes, where the orthogonal codes are preferably orthogonal masks, or different cyclic shift sequences of a constant envelope zero auto-correlation sequence CAZAC, or other orthogonal codes. The resources occupied by different ePHICH groups do not overlap or cover each other.

Only one ePHICH can be mapped on one ePHICH resource, and the resources occupied by different ePHICHs are not overlapped or covered.

If a downlink physical control channel (PDCCH) or a Common Reference Signal (CRS) or a demodulation reference signal (DMRS) or a channel state information reference signal (CSI-RS) is simultaneously transmitted in resource elements of an enhanced physical hybrid automatic repeat request channel, the enhanced physical hybrid automatic repeat request channel is demodulated in a puncturing mode on the resource elements.

If only part of the resources in one physical resource block pair of the enhanced physical hybrid automatic repeat request channel are occupied, the remaining resources can be used for transmitting a Physical Downlink Shared Channel (PDSCH) or an enhanced physical downlink control channel (ePDCCH) or not transmitting any information. Wherein the remaining resources are the remaining resources excluding Common Reference Signals (CRSs), demodulation reference signals (DMRSs), Physical Downlink Control Channels (PDCCHs), and channel state information reference signals (CSI-RSs) except the enhanced physical hybrid automatic repeat request channel resources.

The ePHICH resource mapping method is illustrated below.

The first method is as follows:

one ePHICH resource is composed of multiple resource element groups, where each resource element group is composed of four resource elements (i.e., M = 4) that are consecutive in the frequency domain, and the four resource elements are all resource elements of a non-Common Reference Signal (CRS), a non-demodulation reference signal (DMRS), a non-Physical Downlink Control Channel (PDCCH), and a non-channel state information reference signal (CSI-RS).

Multiple ePHICHs are mapped to one same ePHICH resource, thereby forming an ePHICH group. Wherein ePHICHs belonging to the same ePHICH group are multiplexed by different orthogonal masks.

Wherein, the length of the orthogonal mask is equal to four, and the value is [ + 1; + 1; + 1; +1] or [ + 1; -1; + 1; -1] or [ + 1; + 1; -1; -1] or [ + 1; -1; -1; +1] or [ + j; + j; + j; + j ] or [ + j; -j; + j; -j ] or [ + j; + j; -j; -j ] or [ + j; -j; -j; and the four resource elements of each resource element group are mapped in sequence from low to high in the frequency domain.

The second method comprises the following steps:

one ePHICH resource is composed of multiple resource element groups, where each resource element group is composed of four resource elements (i.e., M = 4) that are consecutive in the time domain, and the four resource elements are all resource elements of a non-Common Reference Signal (CRS), a non-demodulation reference signal (DMRS), a non-Physical Downlink Control Channel (PDCCH), and a non-channel state information reference signal (CSI-RS).

Wherein, the length of the orthogonal mask is equal to four, and the value is [ + 1; + 1; + 1; +1] or [ + 1; -1; + 1; -1] or [ + 1; + 1; -1; -1] or [ + 1; -1; -1; +1] or [ + j; + j; + j; + j ] or [ + j; -j; + j; -j ] or [ + j; + j; -j; -j ] or [ + j; -j; -j; and the four resource elements of each resource element group are mapped sequentially from front to back according to the time domain.

The third method comprises the following steps:

one ePHICH resource is composed of multiple resource element groups, where each resource element group is composed of four resource elements (i.e., M = 4) that are contiguous in time and frequency domains, where any two of the four resource elements are contiguous in frequency domain or contiguous in time domain, and the four resource elements are resource elements of a non-Common Reference Signal (CRS), a non-demodulation reference signal (DMRS), a non-Physical Downlink Control Channel (PDCCH), and a non-channel state information reference signal (CSI-RS).

Wherein, the length of the orthogonal mask is equal to four, and the value is [ + 1; + 1; + 1; +1] or [ + 1; -1; + 1; -1] or [ + 1; + 1; -1; -1] or [ + 1; -1; -1; +1] or [ + j; + j; + j; + j ] or [ + j; -j; + j; -j ] or [ + j; + j; -j; -j ] or [ + j; -j; -j; + j ], and sequentially mapping the four resource elements of each resource element group according to the sequence of the frequency domain first and the time domain later and the sequence of the frequency domain from low to high or the sequence of clockwise or counterclockwise.

The method is as follows:

one ePHICH resource is composed of multiple resource element groups, where each resource element group is composed of two resource elements (i.e., M = 2) that are consecutive in the frequency domain, and both of the two resource elements are resource elements of a non-Common Reference Signal (CRS), a non-demodulation reference signal (DMRS), a non-Physical Downlink Control Channel (PDCCH), and a non-channel state information reference signal (CSI-RS).

Wherein, the length of the orthogonal mask is equal to two, and the value is [ + 1; +1] or [ + 1; -1] or [ + j; + j ] or [ + j; -j ], and are mapped to two resource elements of each resource element group in order from low to high in the frequency domain.

The fifth mode is as follows:

one ePHICH resource is composed of multiple resource element groups, where each resource element group is composed of two resource elements (i.e., M = 2) that are consecutive in the time domain, and both of the two resource elements are resource elements of a non-Common Reference Signal (CRS), a non-demodulation reference signal (DMRS), a non-Physical Downlink Control Channel (PDCCH), and a non-channel state information reference signal (CSI-RS).

Wherein, the length of the orthogonal mask is equal to two, and the value is [ + 1; +1] or [ + 1; -1] or [ + j; + j ] or [ + j; and-j ] are mapped to the two resource elements of each resource element group in sequence from front to back in the time domain.

Preferably, the network side may notify the terminal of the resource location of the enhanced physical hybrid automatic repeat request indicator channel in a resource configuration and notification manner similar to a zero power channel state information reference signal (ZP-CSI-RS) or a non-zero power channel state information reference signal (NZP-CSI-RS).

The method six:

one ePHICH resource is composed of one or more resource element groups, where each resource element group is composed of all resource elements on one subcarrier.

Multiple ePHICHs are mapped to one same ePHICH resource, thereby forming an ePHICH group. Wherein ePHICHs belonging to the same ePHICH group are multiplexed by different cyclic shift sequences of one CAZAC sequence. And the cyclic shift sequences are mapped to the resource elements of each resource element group in sequence from front to back according to the time domain.

Or,

multiple ePHICHs are mapped to one same ePHICH resource, thereby forming an ePHICH group. The ePHICHs belonging to the same ePHICH group are multiplexed by an orthogonal mask with the length of two. And mapping every two continuous resource elements in each resource element group into a group according to the sequence of the time domain from front to back, and sequentially repeating the mapping.

Or,

at most one ePHICH is mapped on one ePHICH resource, and different ePHICH resources are not overlapped or covered with each other.

The method is as follows:

one ePHICH resource is composed of one or more resource element groups, where each resource element group is composed of all resource elements on one symbol.

Multiple ePHICHs are mapped to one same ePHICH resource, thereby forming an ePHICH group. Wherein ePHICHs belonging to the same ePHICH group are multiplexed by different cyclic shift sequences of one CAZAC sequence. The cyclic shift sequence is mapped to the resource elements of each resource element group once according to the sequence of the frequency domain from low to high.

Or,

multiple ePHICHs are mapped to one same ePHICH resource, thereby forming an ePHICH group. The ePHICHs belonging to the same ePHICH group are multiplexed by an orthogonal mask with the length of two. And mapping every two continuous resource elements in each resource element group into a group according to the sequence of the frequency domain from low to high by the orthogonal mask, and sequentially repeating the mapping.

Or,

The method eight:

one ePHICH resource is composed of one or more resource element groups, where each resource element group is composed of all resource elements on P consecutive or discrete subcarriers, where P is an integer greater than 1.

Multiple ePHICHs are mapped to one same ePHICH resource, thereby forming an ePHICH group. Wherein ePHICHs belonging to the same ePHICH group are multiplexed by different cyclic shift sequences of one CAZAC sequence. The cyclic shift sequence is mapped to the resource elements of each resource element group in sequence from time domain to frequency domain and from front to back.

Or,

multiple ePHICHs are mapped to one same ePHICH resource, thereby forming an ePHICH group. The ePHICHs belonging to the same ePHICH group are multiplexed by an orthogonal mask with the length of two. And mapping every two continuous resource elements in each resource element group into a group according to the sequence of time domain first and frequency domain second and time domain from front to back by the orthogonal mask, and sequentially repeating the mapping.

Or,

The method is nine:

one ePHICH resource is composed of one or more resource element groups, where each resource element group is composed of all resource elements on P consecutive or discrete symbols, where P is an integer greater than 1.

Multiple ePHICHs are mapped to one same ePHICH resource, thereby forming an ePHICH group. Wherein ePHICHs belonging to the same ePHICH group are multiplexed by different cyclic shift sequences of one CAZAC sequence. And the cyclic shift sequence is mapped to the resource elements of each resource element group in sequence from the frequency domain to the time domain and from the low frequency domain to the high frequency domain.

Or,

multiple ePHICHs are mapped to one same ePHICH resource, thereby forming an ePHICH group. The ePHICHs belonging to the same ePHICH group are multiplexed by an orthogonal mask with the length of two. And mapping every two continuous resource elements in each resource element group as a group according to the sequence of the frequency domain first and the time domain later and the sequence of the frequency domain from low to high by the orthogonal mask, and sequentially repeating the steps.

Or,

The method comprises the following steps:

one ePHICH resource is composed of one or more resource element groups, where each resource element group is composed of all resource elements on P consecutive/discrete subcarriers and Q consecutive/discrete symbols, where P and Q are integers greater than 1.

Multiple ePHICHs are mapped to one same ePHICH resource, thereby forming an ePHICH group. Wherein ePHICHs belonging to the same ePHICH group are multiplexed by different cyclic shift sequences of one CAZAC sequence. And the cyclic shift sequence is mapped to the resource elements of each resource element group in sequence according to the sequence of the frequency domain first and the time domain later and the sequence of the frequency domain from low to high or the sequence of the time domain first and the frequency domain later and the sequence of the time domain later and the time domain from front to back.

Or,

multiple ePHICHs are mapped to one same ePHICH resource, thereby forming an ePHICH group. The ePHICHs belonging to the same ePHICH group are multiplexed by an orthogonal mask with the length of two. And mapping every two continuous resource elements in each resource element group as a group according to the sequence of the frequency domain first and the time domain second and the frequency domain from low to high or the sequence of the time domain first and the frequency domain second and the time domain from front to back, and sequentially repeating the steps.

Or,

The eleventh mode:

an ePHICH resource is composed of one or more resource element groups, the resource composition of which may also be non-uniform, for example, an ePHICH is composed of three resource element groups, where resource element groups 0 and 2 are composed of two resource elements consecutive in the time domain, and resource element group 1 is composed of two resource elements consecutive in the frequency domain.

Some preferred examples are listed below for the above embodiments:

example one

An enhanced physical hybrid automatic repeat request indicator channel (ePHICH) carries ACK/NACK information corresponding to uplink data transmission (e.g., a physical uplink shared channel, PUSCH). Multiple ePHICHs are mapped to the same group of resources to form an ePHICH group, wherein ePHICHs belonging to one ePHICH group are multiplexed through different orthogonal Code (OCC). One ePHICH resource is paired by indexesIs determined in whichFor the group number of the ePHICH group,and configuring an index for an ePHICH index in the group, namely OCC.

The physical resource block (hereinafter abbreviated as ePHICH PRBs) where the ePHICH is located is configured or pre-agreed by the network side. Fig. 14 is a schematic diagram of a Resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a first preferred embodiment of the present invention, as shown in fig. 14, a symbol 9 and a symbol 10 in a physical Resource block (referred to as ePHICHPRBs for short) in which each ePHICH is located may be used for ePHICH mapping, and may map 6 Resource Element groups in total, where each Resource Element group is formed by 4 Resource Elements (REs) that are consecutive in a frequency domain. For example, subcarriers 0 to 3 in symbol 9 constitute the 1 st available resource element group on the ePHICH PRBs, subcarriers 4 to 7 in symbol 9 constitute the 2 nd available resource element group on the ePHICH PRBs, subcarriers 8 to 11 in symbol 9 constitute the 3 rd resource element group on the ePHICH PRBs, subcarriers 0 to 3 in symbol 10 constitute the 4 th resource element group on the ePHICH PRBs, subcarriers 4 to 7 in symbol 10 constitute the 5 th resource element group on the ePHICH PRBs, and subcarriers 8 to 11 in symbol 10 constitute the 6 th resource element group on the ePHICH PRBs. Preferably, the subframe for transmitting the ePHICH is a non-CSI-RS subframe.

One ePHICH consists of 3 resource element groups, occupying 12 REs in total. The 3 resource element groups of each ePHICH may be distributed on the same PRB or different PRBs. Under the normal CP, 8 ephichs are multiplexed into a group of ephichs through an OCC code with a length of 4, and are mapped onto the same ePHICH resource, and the OCC mapping is based on the above-described resource element group; under the extended CP, 4 ephichs are multiplexed into a group of ephichs by an OCC code with a length of 2, and are mapped onto the same ePHICH resource, where the OCC mapping is based on the continuous REs of every two frequency domains in the above-described resource element group. Table 2 is a table of OCC configurations between different ePHICH, as shown in table 2. For example, the resource element group resource occupied by ePHICH1 of user 1 on a certain PRB is the first resource element group as shown in fig. 14, and if it is a normal CP and the OCC code allocated to user 1 is [ +1 +1 +1], the OCC codes of user 1 are sequentially mapped onto 4 REs of the first resource element group from low to high in the frequency domain; if it is an extended CP and the OCC code to which user 1 is allocated is [ +1 +1], the OCC code of user 1 is repeatedly mapped to the first 2 and last 2 REs of the first resource element group sequentially from low to high in the frequency domain.

TABLE 2

Resource Elements (REs) on symbols 9 and 10 in ePHICH PRBs are only used for transmitting ePHICH, and resources other than symbols 9 and 10 may be used for transmitting signals/channels such as PDCCH, Common Reference Signal (CRS), Demodulation Reference Signal (DMRS), Positioning Reference Signal (PRS), and PDSCH and/or ePDCCH.

It is worth noting that:

the mapping resource of the ePHICH in the scheme described in the preferred embodiment is not limited to the symbol 9 and the symbol 10, and typically, the mapping resource of the ePHICH may be one or several symbols in ePHICH PRBs, only the ePHICH is transmitted on the symbols, and resources other than the symbols may be used for other signals/channels such as PDCCH, CRS, DMRS, PDSCH, and/or ePDCCH;

ePHICH is mapped on non-PBCH resources;

preferably ePHICH maps on non-CSI-RS resources;

the resource element group forming one ePHICH is N, N is not limited to be equal to or more than 3, N is any integer larger than or equal to 1, and the value of N is fixed or configured by the network side.

Example two

An enhanced physical hybrid automatic repeat request indicator channel (ePHICH) carries ACK/NACK information corresponding to uplink data transmission (e.g., a physical uplink shared channel, PUSCH). Multiple ePHICHs are mapped to the same group of resources to form an ePHICH group, wherein the ePHICHs belonging to one ePHICH group are multiplexed through different orthogonal masks OCC. One ePHICH resource is paired by indexesIs determined in whichFor the group number of the ePHICH group,and configuring an index for an ePHICH index in the group, namely OCC.

The physical resource block (hereinafter abbreviated as ePHICH PRBs) where the ePHICH is located is configured or pre-agreed by the network side. Fig. 15 is a schematic diagram of a Resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a second preferred embodiment of the present invention, as shown in fig. 15, symbols 4 to 13 in a physical Resource block (referred to as "ePHICH PRBs" for short) in which each ePHICH is located may be used for ePHICH mapping, and at most 12 Resource Element groups may be mapped, where each Resource Element group is formed by 4 Resource Elements (REs) that are consecutive in a time domain. For example, subcarriers 2, 4, 7, and 8 on symbols 6 to 9 respectively constitute the 1 st to 4 th available resource element groups of the ePHICH PRBs, subcarriers 1,5, 10, and 11 on symbols 8 to 11 respectively constitute the 5 th to 8 th available resource element groups of the ePHICH PRBs, and subcarriers 2, 4, 7, and 8 on symbols 10 to 13 respectively constitute the 9 th to 12 th available resource element groups of the ePHICH PRBs. The RE resource for mapping the ePHICH is the remaining REs in the ePHICHPRBs except for the PDCCH, CRS, DMRS, and the like, and the subframe for transmitting the ePHICH is preferably a non-CSI-RS subframe.

One ePHICH consists of 3 resource element groups, occupying 12 REs in total. The 3 resource element groups of each ePHICH may be distributed on the same PRB or different PRBs. Under the normal CP, 8 ephichs are multiplexed into a group of ephichs through an OCC code with a length of 4, and are mapped onto the same ePHICH resource, and the OCC mapping is based on the above-described resource element group; under the extended CP, 4 ephichs are multiplexed into a group of ephichs by an OCC code with a length of 2, and are mapped onto the same ePHICH resource, where the OCC mapping is based on every two consecutive REs in the time domain in the above-described resource element group. The specific OCC code is shown in table 2 above. For example, the resource element group resource occupied by ePHICH1 of user 1 on a certain PRB is the first resource element group as shown in fig. 3, and if it is a normal CP and the OCC code allocated to user 1 is [ +1 +1 +1 +1], the OCC codes of user 1 are sequentially mapped onto 4 REs of the first resource element group in a time domain from front to back (or from back to front); if it is an extended CP and the OCC code to which user 1 is allocated is [ +1 +1], the OCC code of user 1 is repeatedly mapped to the first 2 REs and the second 2 REs of the first resource element group sequentially from front to back (or from back to front) in the time domain.

Resource Elements (REs) on a physical resource block (ePHICH PRBs) where the ePHICH is located are not used for transmitting other channels such as PDSCH or PDCCH.

It should be noted that the mapping resource of the ePHICH in the scheme described in the preferred embodiment is not limited to this mapping manner, as long as the 4 REs time domains to which the resource element group of the ePHICH belongs are guaranteed to be consecutive and not to collide with other signals or channels. The mapping resources of the ePHICH scheme described in the preferred embodiment are not limited to symbols 4 to 13, for example, symbols 0 to 13 are all mappable resources of ePHICH in the new carrier type. ePHICH is mapped on non-PBCH resources, preferably ePHICH is mapped on non-CSI-RS resources. The resource element group forming one ePHICH is N, N is not limited to be equal to or more than 3, N is any integer larger than or equal to 1, and the value of N is fixed or configured by the network side.

EXAMPLE III

The physical resource block (hereinafter abbreviated as ePHICH PRBs) where the ePHICH is located is configured or pre-agreed by the network side. Fig. 16 is a schematic diagram of a resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a third preferred embodiment of the present invention, as shown in fig. 16, symbols 4 to 13 in a physical resource block (referred to as ePHICH PRBs for short) in which each ePHICH is located may be used for ePHICH mapping, and at most 14 resource element groups may be mapped, where each resource element group is formed by two consecutive subcarriers on two consecutive symbols. For example, subcarriers 3 and 4 on symbols 5 and 6 constitute the 1 st available resource element group on the ePHICH PRBs, subcarriers 7 and 8 on symbols 5 and 6 constitute the 2 nd available resource element group, subcarriers 1 and 2 on symbols 7 and 8 constitute the 3 rd available resource element group, subcarriers 4 and 5 on symbols 7 and 8 constitute the 4 th available resource element group, subcarriers 7 and 8 on symbols 7 and 8 constitute the 5 th available resource element group, subcarriers 10 and 11 on symbols 7 and 8 constitute the 6 th available resource element group, subcarriers 0 and 1 on symbols 9 and 10 constitute the 7 th available resource element group, subcarriers 2 and 3 on symbols 9 and 10 constitute the 8 th available resource element group, subcarriers 4 and 5 on symbols 9 and 10 constitute the 9 th available resource element group, subcarriers 6 and 5 on symbols 9 and 10, 7 form the 10 th available resource element group, the subcarriers 8, 9 on the symbols 9, 10 form the 11 th available resource element group, the subcarriers 10, 11 on the symbols 9, 10 form the 12 th available resource element group, the subcarriers 3, 4 on the symbols 12, 13 form the 13 th available resource element group, and the subcarriers 7, 8 on the symbols 12, 13 form the 14 th available resource element group. The RE resources for mapping the ePHICH are the remaining REs except for PDCCH, CRS, DMRS, etc. in the ePHICH PRBs, and the subframe for transmitting the ePHICH is preferably a non-CSI-RS subframe.

One ePHICH consists of 3 resource element groups, occupying 12 REs in total. The 3 resource element groups of each ePHICH may be distributed on the same or different PRBs. Under the normal CP, 8 ephichs are multiplexed into a group of ephichs through an OCC code with a length of 4, and are mapped onto the same ePHICH resource, and the OCC mapping is based on the above-described resource element group; under the extended CP, 4 ephichs are multiplexed into a group of ephichs by an OCC code with a length of 2, and are mapped onto the same ePHICH resource, where the OCC mapping is based on REs in every two consecutive time domains (or every two consecutive frequency domains) in the above-described resource element group. Specific OCC codes are shown in table 2. For example, the resource element group resource occupied by ePHICH1 of user 1 on a certain PRB is the first resource element group as shown in fig. 14, if it is a normal CP, and the OCC code allocated to user 1 is [ +1 +1 +1 +1], then the OCC code of user 1 will be mapped to four REs of the resource element group clockwise or counterclockwise from a fixed certain RE in the resource element group; the addition is an extended CP, and the OCC code to which the user 1 is allocated is [ +1 +1], then the OCC code of the user 1 is sequentially and repeatedly mapped to two subcarriers of the resource element group in a time domain from front to back (or from back to front) manner or sequentially and repeatedly mapped to two symbols of the resource element group in a frequency domain from low to high manner.

It should be noted that the mapping resource of the ePHICH in the scheme described in this embodiment is not limited to this mapping manner, as long as any two REs of the 4 REs to which the resource element group of the ePHICH belongs are guaranteed to be time-domain continuous or frequency-domain continuous, and do not collide with other signals or channels. ePHICH is mapped on non-PBCH resources, preferably ePHICH is mapped on non-CSI-RS resources. The resource element group forming one ePHICH is N, N is not limited to be equal to or more than 3, N is any integer larger than or equal to 1, and the value of N is fixed or configured by the network side.

Example four

The physical resource block (hereinafter abbreviated as ePHICH PRBs) where the ePHICH is located is configured or pre-agreed by the network side. Fig. 17 is a schematic diagram of a resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a fourth preferred embodiment of the present invention, as shown in fig. 17, symbols 4 to 13 in a physical resource block (referred to as ePHICH PRBs for short) in which each ePHICH is located may be used for ePHICH mapping, and at most, 36 resource element groups may be mapped, where each resource element group is formed by two subcarriers consecutive in a frequency domain. For example, 1 to 4 resource element groups on ePHICHPRBs are mapped on subcarriers 1 and 2, 4 and 5, 7 and 8, 10 and 11 of symbol 4, respectively, 5 to 6 resource element groups on ePHICHPRBs are mapped on subcarriers 2 and 3,7 and 8 of symbol 5, respectively, 9 to 12 resource element groups are mapped on subcarriers 2 and 3,7 and 8 of symbol 6, respectively, ePHICHPRBs, 13 to 16 resource element groups are mapped on subcarriers 1 and 2, 4 and 5, 7 and 8, 10 and 11 of symbol 7, 13 to 16 resource element groups are mapped on subcarriers 0 and 1, 2 and 3, 4 and 5, 6 and 7, 8 and 9, 10 and 11 of symbol 9, 17 to 22 resource element groups are mapped on subcarriers 0 and 1, 2 and 3, 4 and 5, 6 and 7, 8 and 9, 10 and 11 of symbol 10, respectively, and 17 to 22 resource element groups are mapped on subcarriers 0 and 1, 2 and 3,7 and 8, 10 and 5, 10 and 11 of symbol 10, respectively, 6 and 7, 8 and 9, 10 and 11 map the 23 th to 28 th resource element groups respectively, subcarriers 1 and 2, 4 and 5, 7 and 8, 10 and 11 on the symbol 11 map the 29 th to 32 th resource element groups respectively, subcarriers 2 and 3,7 and 8 on the symbol 12 map the 33 th and 34 th resource element groups respectively, and subcarriers 2 and 3,7 and 8 on the symbol 13 map the 35 th and 36 th resource element groups respectively. The RE resources for mapping the ePHICH are the remaining REs except for PDCCH, CRS, DMRS, etc. in the ePHICH PRBs, and the subframe for transmitting the ePHICH is preferably a non-CSI-RS subframe.

One ePHICH consists of 3 resource element groups, occupying 6 REs in total. The 3 resource element groups of each ePHICH may be distributed on the same or different PRBs. The 4 ePHICHs are multiplexed into a group of ePHICHs through OCC codes with the length of 2 and are mapped to the same ePHICH resource, and the OCC codes are mapped to each resource element group from low frequency to high frequency according to the frequency domain. Table 3 is a table of OCC configurations between different ePHICH, as shown in table 3. Preferably: the ePHICH resource mapping under the normal CP and the extended CP adopts the same resource mapping mode under the extended CP by the PHICH in the existing standard, wherein one resource element group in the ePHICH is composed of two resource element groups. As shown in fig. 17, in each ePHICH PRBs, two consecutive resource element groups in the frequency domain from low frequency to high frequency form an enhanced resource element group. When the ePHICH is mapped, zero padding is performed first, and then mapping is performed, for example:

wherein d [. cndot ] represents the data information after the uplink ACK/NACK information is subjected to channel coding, modulation and spread spectrum scrambling.

TABLE 3

It should be noted that the mapping resource of the ePHICH in the scheme described in this embodiment is not limited to this mapping manner, as long as it is ensured that the 2 REs to which the resource element group of the ePHICH belongs are continuous in frequency domain and do not collide with other signals or channels; the mapping resources of the ePHICH in the scheme described in this embodiment are not limited to symbols 4 to 13, for example, symbols 0 to 13 are all mappable resources of the ePHICH in the new carrier type. ePHICH is mapped on non-PBCH resources, preferably ePHICH is mapped on non-CSI-RS resources. The resource element group forming one ePHICH is N, N is not limited to be equal to or more than 3, N is any integer larger than or equal to 1, and the value of N is fixed or configured by the network side.

EXAMPLE five

The physical resource block (hereinafter abbreviated as ePHICH PRBs) where the ePHICH is located is configured or pre-agreed by the network side. Fig. 18 is a schematic diagram of a resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a fifth preferred embodiment of the present invention, as shown in fig. 18, symbols 4 to 13 in a physical resource block (referred to as ePHICH PRBs for short) in which each ePHICH is located may be used for ePHICH mapping, and a total of 40 resource element groups may be mapped, where each resource element group is composed of two consecutive REs in time domain or frequency domain. The specific mapping rule is as follows: the OCCs on the subcarriers of all CRSs in one ePHICH PRBs are mapped once according to every two continuous REs, the OCCs on the symbols of all the DMRSs are mapped once according to every two continuous REs on each subcarrier, and the OCCs on the other resources are mapped once every two continuous REs from low frequency to high frequency on each symbol. The RE resources for mapping the ePHICH are the remaining REs except for PDCCH, CRS, DMRS, etc. in the ePHICH PRBs, and the subframe for transmitting the ePHICH is preferably a non-CSI-RS subframe.

One ePHICH consists of 3 resource element groups, occupying 6 REs in total. The 3 resource element groups of each ePHICH may be distributed on the same or different PRBs. The 4 ePHICHs are multiplexed into a group of ePHICHs through OCC codes with the length of 2 and are mapped to the same ePHICH resource, and the OCC codes are mapped to each resource element group according to the mode that the frequency domain is from low frequency to high frequency or the time domain is from front to back. Specific OCC codes are shown in table 3. Preferably: the ePHICH resource mapping under the normal CP and the extended CP adopts the same resource mapping mode under the extended CP by the PHICH in the existing standard, wherein one resource element group in the ePHICH is composed of two resource element groups. As shown in fig. 18, in each ePHICH PRBs, each two consecutive resource element groups from frequency domain to time domain and from low frequency to high frequency in the frequency domain constitute one enhanced resource element group. When the ePHICH is mapped, zero padding is performed first, and then mapping is performed, for example:

It should be noted that the mapping resource of the ePHICH in the scheme described in this embodiment is not limited to this mapping manner, as long as it is ensured that the 2 REs to which the resource element group of the ePHICH belongs are contiguous in the frequency domain and do not conflict with other signals or channels. The mapping resources of the ePHICH in the scheme described in this embodiment are not limited to symbols 4 to 13, for example, symbols 0 to 13 are all mappable resources of the ePHICH in the new carrier type. ePHICH is mapped on non-PBCH resources, preferably ePHICH is mapped on non-CSI-RS resources. The resource element group forming one ePHICH is N, N is not limited to be equal to or more than 3, N is any integer larger than or equal to 1, and the value of N is fixed or configured by the network side.

EXAMPLE six

An enhanced physical hybrid automatic repeat request indicator channel (ePHICH) carries ACK/NACK information corresponding to uplink data transmission (e.g., a physical uplink shared channel, PUSCH). Multiple ePHICHs are mapped to the same group of resources to form an ePHICH group, wherein the ePHICHs belonging to one ePHICH group are multiplexed by N different cyclic shift sequences of one ZC sequence. One ePHICH resource is paired by indexesIs determined in whichFor the group number of the ePHICH group,and configuring indexes for the ePHICH indexes in the group, namely the cyclic shift sequences. N is fixed or configured by the network side through signaling, and the value of N when configured by the network side can be indirectly determined by setting the cyclic shift interval.

The physical resource block (hereinafter abbreviated as ePHICH PRBs) where the ePHICH is located is configured or pre-agreed by the network side. Fig. 19 is a schematic diagram of a resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a sixth preferred embodiment of the present invention, as shown in fig. 19, symbols 0 to 13 in a physical resource block (referred to as ePHICH PRBs for short) where each ePHICH is located may be used for ePHICH mapping, and a total of 12 resource element groups may be mapped. Wherein each resource element group consists of 14 REs on each subcarrier in ephichrpbs. When other signals or channels such as PDCCH, CRS, DMRS, etc. are simultaneously transmitted on the RE transmitting the ePHICH, the ePHICH demodulates the RE by using a puncturing method.

One ePHICH consists of 3 resource element groups. The 3 resource element groups of each ePHICH may be distributed on the same or different PRBs. The N ephichs are multiplexed on the same ePHICH resource by N cyclically shifted sequences of one ZC sequence. The length of the ZC sequence is 14, and the ZC sequence is sequentially mapped on each subcarrier from the front to the back in the time domain.

It should be noted that the mapping resource of the ePHICH described in this embodiment may also be a part of subcarriers in an ePHICH physical resource block pair used for ePHICH transmission, and then preferably, the remaining resources (subcarriers) in the ePHICH PRBs may also be used for transmitting ePDCCH or PDSCH. In addition, the ePHICH is mapped on the non-PBCH resources, and each resource element group constituting the ePHICH may also be constituted by a plurality of subcarriers.

The sequence used for multiplexing between different ePHICH channels in an ePHICH group in the embodiment of the present invention is not limited to the ZC sequence, as long as the sequence used for multiplexing between different ePHICH channels is orthogonal. Typically, it is also possible to obtain 7 OCC sequences in a sequential repetitive arrangement, as shown in Table 4:

TABLE 4

EXAMPLE seven

The physical resource block (hereinafter abbreviated as ePHICHPRBs) where the ePHICH is located is configured or pre-agreed by the network side. Fig. 20 is a schematic diagram of a resource mapping pattern of an enhanced physical hybrid automatic repeat request indicator channel according to a seventh preferred embodiment of the present invention, as shown in fig. 20, symbols 4 to 13 in a physical resource block (referred to as ePHICH PRBs for short) in which each ePHICH is located may be used for ePHICH mapping, and a total of 8 resource element groups may be mapped. Where each resource element group consists of 12 REs per symbol in ePHICHPRBs. When other signals or channels such as PDCCH, CRS, DMRS, etc. are simultaneously transmitted on the RE transmitting the ePHICH, the ePHICH demodulates the RE by using a puncturing method.

One ePHICH consists of 3 resource element groups. The 3 resource element groups of each ePHICH may be distributed on the same or different PRBs. The N ephichs are multiplexed on the same ePHICH resource by N cyclically shifted sequences of one ZC sequence. The ZC sequence has a length of 12 and is mapped in each symbol in order from the low frequency domain to the high frequency domain.

It should be noted that the mapping resource of the ePHICH described in this embodiment may also be other symbol configurations in one ePHICH physical resource block pair, for example, all symbols in a new carrier type may be used for ePHICH transmission, or only part of the symbols 4 to 13 may be used for ePHICH transmission, and then preferably, the remaining resources in the ePHICH PRBs may also be used for transmitting ePDCCH or PDSCH. In addition, the ePHICH is mapped on the non-PBCH resources, and each resource element group constituting the ePHICH may also be composed of multiple symbols.

In the embodiment of the present invention, the sequence used for multiplexing between different ephichs in an ePHICH group is not limited to the ZC sequence, as long as the sequence used for multiplexing between different ephichs is orthogonal, and typically, the sequence can also be obtained by sequentially and repeatedly arranging 7 groups of OCC sequences, for example, as shown in table 4. The resource element group forming one ePHICH is N, N is not limited to be equal to or more than 3, N is any integer larger than or equal to 1, and the value of N is fixed or configured by the network side.

Example eight

The physical resource block (hereinafter abbreviated as ePHICH PRBs) where the ePHICH is located is configured or pre-agreed by the network side. As shown in fig. 19, symbols 0 to 13 in a physical resource block (abbreviated as ePHICH PRBs) where each ePHICH is located may be used for ePHICH mapping, and a total of 12 resource element groups may be mapped. Wherein each resource element group consists of 14 REs on each subcarrier in ePHICH PRBs. When other signals or channels, such as PDCCH, CRS, DMRS, etc., are simultaneously transmitted on the RE transmitting the ePHICH, the ePHICH demodulates the RE and the RE sharing the same set of OCCs with the RE in a puncturing manner.

One ePHICH consists of 3 resource element groups. The 3 resource element groups of each ePHICH may be distributed on the same or different PRBs. The 4 ePHICHs are multiplexed into a group of ePHICHs through OCC codes with the length of 2 and are mapped onto the same ePHICH resources, and the OCC codes are sequentially and repeatedly mapped from front to back by taking every two continuous REs in the time domain as a group on each subcarrier.

It should be noted that the mapping resource of the ePHICH described in this embodiment may also be a part of subcarriers in one ePHICH physical resource block pair, and then preferably, the remaining resources (subcarriers) in the physical resource block pair may also be used to send ePDCCH or PDSCH. Furthermore, ePHICH is mapped on non-PBCH resources, and the resource element group constituting ePHICH may be composed of a plurality of subcarriers. The resource element group forming one ePHICH is N, N is not limited to be equal to or more than 3, N is any integer larger than or equal to 1, and the value of N is fixed or configured by the network side.

Example nine

The physical resource block (hereinafter abbreviated as ePHICH PRBs) where the ePHICH is located is configured or pre-agreed by the network side. As shown in fig. 20, symbols 4 to 13 in a physical resource block (abbreviated as ePHICH PRBs) where each ePHICH is located may be used for ePHICH mapping, and a total of 8 resource element groups may be mapped. Wherein each resource element group consists of 12 REs per symbol in ePHICH PRBs. When other signals or channels, such as PDCCH, CRS, DMRS, etc., are simultaneously transmitted on the RE transmitting the ePHICH, the ePHICH demodulates the RE and the RE sharing the same set of OCCs with the RE in a puncturing manner.

One ePHICH consists of 3 resource element groups. The 3 resource element groups of each ePHICH may be distributed on the same or different PRBs. The 4 ePHICHs are multiplexed into a group of ePHICHs through OCC codes with the length of 2 and are mapped to the same ePHICH resource, and the OCC codes are sequentially and repeatedly mapped in a mode that every two continuous REs in a frequency domain are used as a group from low frequency to high frequency on each symbol.

It should be noted that the mapping resource of the ePHICH described in this embodiment may also be other symbol configurations in one ePHICH physical resource block pair, for example, all symbols in a new carrier type may be used for ePHICH transmission, or only part of the symbols 4 to 13 may be used for ePHICH transmission, and then, preferably, the remaining resources in the ePHICH PRBs may also be used for transmitting ePDCCH or PDSCH. In addition, the ePHICH is mapped on the non-PBCH resource, and the resource element group constituting the ePHICH may also be composed of a plurality of symbols. The resource element group forming one ePHICH is N, N is not limited to be equal to or more than 3, N is any integer larger than or equal to 1, and the value of N is fixed or configured by the network side.

Example ten

An enhanced physical hybrid automatic repeat request indicator channel (ePHICH) carries ACK/NACK information corresponding to uplink data transmission (e.g., a physical uplink shared channel, PUSCH). At most one ePHICH maps onto one ePHICH resource. The resources occupied by different ePHICH do not overlap or cover each other. One ePHICH resourceCan be determined by the way of network side signaling notification, and also can be determined by the resource indexTo be determined.

The physical resource block (hereinafter abbreviated as ePHICHPRBs) where the ePHICH is located is configured or pre-agreed by the network side. Fig. 21 to 24 are schematic diagrams of resource mapping patterns of an enhanced physical hybrid automatic repeat request indicator channel according to preferred embodiments of the present invention, and as shown in fig. 21 to 24, a physical resource block (referred to as "ePHICH PRBs" for short) in which each ePHICH is located is divided into at most four resource element groups, where each resource group occupies one fourth of the resources in the physical resource block and does not overlap or cover each other. There are various methods for dividing the four resource element groups, for example: fig. 21 is a schematic diagram of a resource mapping pattern according to which every three consecutive subcarriers in each physical resource block pair form a resource element group, as shown in fig. 21, all REs on subcarriers 0 to 2 form a first resource element group, all REs on subcarriers 3 to 5 form a second resource element group, all REs on subcarriers 6 to 8 form a third resource element group, and all REs on subcarriers 9 to 11 form a fourth resource element group; fig. 22 is a schematic diagram of a resource mapping pattern of every seven consecutive symbols in the time domain and every six consecutive subcarriers in the frequency domain in each physical resource block according to a preferred embodiment of the present invention, as shown in fig. 22, subcarriers 0 to 5 on symbols 0 to 6 constitute a first resource element group, subcarriers 0 to 5 on symbols 7 to 13 constitute a second resource element group, subcarriers 6 to 11 on symbols 0 to 6 constitute a third resource element group, and subcarriers 6 to 11 on symbols 7 to 13 constitute a fourth resource element group; fig. 23 is a schematic diagram of a resource mapping pattern according to which every three discrete subcarriers in each physical resource block pair form a resource element group, as shown in fig. 23; fig. 24 is a schematic diagram of a resource mapping pattern for every seven consecutive symbols in the time domain and every six discrete subcarriers in the frequency domain per each physical resource block pair according to a preferred embodiment of the present invention, as shown in fig. 24. When other signals or channels such as PDCCH, CRS, DMRS, etc. are simultaneously transmitted on the RE transmitting the ePHICH, the ePHICH demodulates the RE by using a puncturing method.

One ePHICH consists of 3 resource element groups. The 3 resource element groups of each ePHICH may be distributed on the same or different PRBs.

Notably, ePHICH maps on non-PBCH resources. In the scheme described in this embodiment, the mapping resource of the ePHICH may also be a partial resource or a resource element group in one ePHICH physical resource block pair, and at this time, preferably, the remaining resources in the ePHICH prbs may also be used to send the ePDCCH or the PDSCH. The resource element group forming one ePHICH is N, N is not limited to be equal to or more than 3, N is any integer larger than or equal to 1, and the value of N is fixed or configured by the network side.

EXAMPLE eleven

The physical resource block (hereinafter abbreviated as ePHICHPRBs) where the ePHICH is located is configured or pre-agreed by the network side. As shown in fig. 21 to 24, the physical resource block (abbreviated as ePHICH PRBs) in which each ePHICH is located is divided into at most four resource element groups, where each resource group occupies one fourth of the resources in the physical resource block and does not overlap or cover each other. There are various methods for dividing the four resource element groups, for example: forming a resource element group according to every three continuous subcarriers in each physical resource block pair, as shown in fig. 21, forming a first resource element group by all REs on subcarriers 0-2, forming a second resource element group by all REs on subcarriers 3-5, forming a third resource element group by all REs on subcarriers 6-8, and forming a fourth resource element group by all REs on subcarriers 9-11; according to the dividing manner of every seven continuous symbols in the time domain and every six continuous subcarriers in the frequency domain in each physical resource block pair, as shown in fig. 22, subcarriers 0 to 5 on symbols 0 to 6 constitute a first resource element group, subcarriers 0 to 5 on symbols 7 to 13 constitute a second resource element group, subcarriers 6 to 11 on symbols 0 to 6 constitute a third resource element group, and subcarriers 6 to 11 on symbols 7 to 13 constitute a fourth resource element group; forming a resource element group according to every three discrete subcarriers in each physical resource block pair, as shown in fig. 23; the division manner of each physical resource block pair is that every seven continuous symbols in the time domain and every six discrete subcarriers in the frequency domain are divided, as shown in fig. 24. When other signals or channels such as PDCCH, CRS, DMRS, etc. are simultaneously transmitted on the RE transmitting the ePHICH, the ePHICH demodulates the RE by using a puncturing method.

One ePHICH consists of 3 resource element groups. The 3 resource element groups of each ePHICH may be distributed on the same or different PRBs. The 4 ePHICHs are multiplexed into a group of ePHICHs through an OCC code with the length of 2 and are mapped onto the same ePHICH resource, and the OCC code is sequentially and repeatedly mapped in a low-frequency to high-frequency mode by taking every two continuous REs in a frequency domain as a group on each symbol or sequentially and repeatedly mapped in a low-frequency to high-frequency mode by taking every two continuous REs in a time domain as a group on each subcarrier.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An ePHICH transmission method for an enhanced physical hybrid automatic repeat request indicator channel (ePHICH), comprising:

determining an ePHICH resource mapped to the ePHICH by a network side, wherein the ePHICH resource comprises N resource element groups, each resource element group comprises M resource elements, all the resource elements in one resource element group are located in the same physical resource block pair, the physical resource block pair is configured to a terminal side by the network side and/or determined by the network side and the terminal side according to a predetermined mode, and M, N are integers which are more than or equal to 1;

the network side transmits information to the terminal side according to the determined ePHICH resource;

wherein, a plurality of ePHICHs are mapped to the same ePHICH resource by using different orthogonal codes; under the condition that the length of the orthogonal code is M, mapping the orthogonal code to the resource elements of each resource element group of the ePHICH according to the sequence of a frequency domain from low to high or a time domain from front to back; and/or repeatedly mapping the resource elements of each resource element group of the ePHICH by taking the orthogonal codes as a unit according to the sequence of the frequency domain from low to high or the time domain from front to back when the length of the orthogonal codes is less than M.

2. The method of claim 1, wherein the M resource elements included in each resource element group are at least one of:

time domain fixes a symbol and M resource elements on M continuous subcarriers of frequency domain;

fixing M resource elements on one subcarrier and M continuous symbols in time domain in a frequency domain;

time domain fixes a symbol and M resource elements on M subcarriers with discrete frequency domain;

frequency domain fixes one subcarrier and M resource elements on M symbols with discrete time domain;

m resource elements on M continuous symbols in time domain and n continuous subcarriers in frequency domain, wherein M is M × n, and M and n are integers greater than 1;

m resource elements on b subcarriers with continuous a symbols in time domain and discrete frequency domain, wherein M is a × b, and a and b are integers greater than 1;

the method comprises the steps of obtaining x discrete symbols in a time domain and M resource elements on y continuous subcarriers in a frequency domain, wherein M is x y, and x and y are integers larger than 1.

3. The method of claim 1,

the orthogonal code is an orthogonal mask OCC or a constant envelope zero autocorrelation sequence CAZAC.

4. The method of claim 1,

and when only part of resources in the physical resource block pair for mapping the ePHICH are used for ePHICH resources, the rest resources are used for mapping a Physical Downlink Shared Channel (PDSCH), an enhanced physical downlink control channel (ePDCCH) or not mapping any channel, wherein the rest resources are resources except the ePHICH resources, the resources for carrying CRS, the resources for carrying DMRS, the resources for mapping PDCCH and the resources for carrying CSI-RS.

5. The method of claim 1, wherein before the network side determines ePHICH resources mapped to the ePHICH, the method further comprises:

the network side determines a physical resource block pair for mapping the ePHICH by at least one of the following modes: and the physical resource block pair for mapping the ePHICH is not a physical resource block pair for sending a physical broadcast channel, and the physical resource block pair for mapping the ePHICH is not a physical resource block pair for carrying a channel state information reference signal.

6. The method of claim 1, wherein after the network side determines ePHICH resources mapped to the ePHICH, the method further comprises: the network side informs the terminal side of the determined ePHICH resources through at least one of the following modes:

notifying the ePHICH resource to the terminal side by adding a Radio Resource Control (RRC) signaling;

notifying the ePHICH resource to the terminal side by a notification signaling reusing a resource of a zero power channel state information reference signal ZP-CSI-RS or a non-zero power channel state information reference signal NZP-CSI-RS;

and notifying the ePHICH resource to the terminal side by adopting a configuration and/or notification method of a zero-power channel state information reference signal (ZP-CSI-RS) or a non-zero-power signaling state information reference signal (NZP-CSI-RS).

7. An ePHICH transmission method for an enhanced physical hybrid automatic repeat request indicator channel (ePHICH), comprising:

determining, by a terminal side, an ePHICH resource mapped to the ePHICH, wherein the ePHICH resource includes N resource element groups, each resource element group includes M resource elements, all resource elements in one resource element group are located in the same physical resource block pair, the physical resource block pair is configured to the terminal side by the network side and/or determined by the network side and the terminal side in a predetermined manner, and M, N are integers greater than or equal to 1;

the terminal side receives transmission information from a network side according to the determined ePHICH resource;

wherein, a plurality of ePHICHs are multiplexed and mapped to the same ePHICH resource by using different orthogonal codes; under the condition that the length of the orthogonal code is M, mapping the orthogonal code to the resource elements of each resource element group of the ePHICH according to the sequence of a frequency domain from low to high or a time domain from front to back; and/or repeatedly mapping the resource elements of each resource element group of the ePHICH by taking the orthogonal codes as a unit according to the sequence of the frequency domain from low to high or the time domain from front to back when the length of the orthogonal codes is less than M.

8. The method of claim 7, wherein the M resource elements included in each resource element group are at least one of:

9. The method of claim 7, wherein after the terminal side receives the transmission information from the network side according to the determined ePHICH resource, the method further comprises:

and under the condition that the M resource elements are not only used for mapping the ePHICH, the terminal side demodulates the ePHICH in a puncturing mode.

10. An ePHICH transmission apparatus, comprising:

a first determining module, configured to determine, by a network side, an ePHICH resource mapped to the ePHICH, where the ePHICH resource includes N resource element groups, each resource element group includes M resource elements, all resource elements in one resource element group are located in a same physical resource block pair, the physical resource block pair is configured by the network side to a terminal side and/or determined by the network side and the terminal side in a predetermined manner, and M, N are integers greater than or equal to 1;

a first transmission module, configured to transmit, by the network side, information to a terminal side according to the determined ePHICH resource;

wherein the first determining module comprises: a second mapping unit, configured to map multiple ePHICH resources to the same ePHICH resource by using different orthogonal codes; wherein the first determining module further comprises: a third mapping unit, configured to map, when the length of the orthogonal code is M, the orthogonal code to resource elements of each resource element group of the ePHICH according to a sequence from low to high in a frequency domain or from front to back in a time domain; and/or, a fourth mapping unit, configured to repeatedly map the orthogonal code to the resource elements of each resource element group of the ePHICH in units of the orthogonal code according to a sequence from low to high in a frequency domain or from front to back in a time domain when the length of the orthogonal code is smaller than M.

11. The apparatus of claim 10, wherein the first determining module is configured to determine the M resource elements included in each resource element group by at least one of:

12. The apparatus of claim 10,

the first determining module is further configured to determine that the orthogonal code is an orthogonal mask OCC or a constant amplitude zero autocorrelation sequence CAZAC.

13. The apparatus of claim 10,

the first determining module is further configured to determine, when only a part of resources in a physical resource block pair mapping an ePHICH are used for ePHICH resources, to use remaining resources for mapping a physical downlink shared channel PDSCH, an enhanced physical downlink control channel ePDCCH, or not performing mapping of any channel, where the remaining resources are resources other than the ePHICH resources, resources for carrying a CRS, resources for carrying a DMRS, resources for mapping a PDCCH, and resources for carrying a CSI-RS.

14. The apparatus of claim 10, further comprising:

a second determining module, configured to determine, by the network side, a physical resource block pair for mapping the ePHICH by at least one of: and the physical resource block pair for mapping the ePHICH is not a physical resource block pair for sending a physical broadcast channel, and the physical resource block pair for mapping the ePHICH is not a physical resource block pair for carrying a channel state information reference signal.

15. The apparatus of claim 10, further comprising:

a notifying module, configured to notify, by the network side, the determined ePHICH resource to the terminal side by at least one of the following manners: notifying the ePHICH resource to the terminal side by adding a Radio Resource Control (RRC) signaling; notifying the ePHICH resource to the terminal side by a notification signaling reusing a resource of a zero power channel state information reference signal ZP-CSI-RS or a non-zero power channel state information reference signal NZP-CSI-RS; and notifying the ePHICH resource to the terminal side by adopting a configuration and/or notification method of a zero-power channel state information reference signal (ZP-CSI-RS) or a non-zero-power signaling state information reference signal (NZP-CSI-RS).

16. An ePHICH transmission apparatus, comprising:

a third determining module, configured to determine, by a terminal side, an ePHICH resource mapped to the ePHICH, where the ePHICH resource includes N resource element groups, each resource element group includes M resource elements, all resource elements in one resource element group are located in a same physical resource block pair, the physical resource block pair is configured by the network side to the terminal side and/or determined by a pre-negotiation between the network side and the terminal side, the physical resource block pair is configured by the network side to the terminal side and/or determined by the network side and the terminal side in a pre-agreed manner, and M, N are integers greater than or equal to 1;

a first receiving module, configured to receive, by the terminal side, transmission information from a network side according to the determined ePHICH resource;

wherein the third determining module comprises: a sixth mapping unit, configured to map multiple ePHICH resources to the same ePHICH resource through multiplexing using different orthogonal codes; wherein the third determining module further comprises: a seventh mapping unit, configured to map, when the length of the orthogonal code is M, the orthogonal code to resource elements of each resource element group of the ePHICH according to a sequence from a low frequency domain to a high frequency domain or a sequence from a front time domain to a back time domain; and/or, an eighth mapping unit, configured to repeatedly map the orthogonal code to the resource elements of each resource element group of the ePHICH in units of the orthogonal code according to a sequence from low to high in a frequency domain or from front to back in a time domain when the length of the orthogonal code is smaller than M.

17. The apparatus of claim 16, wherein the third determining module is configured to determine the M resource elements included in each resource element group by at least one of:

18. The apparatus of claim 16, further comprising:

a demodulation module, configured to, when the M resource elements are not only used for mapping the ePHICH, demodulate the ePHICH by using a puncturing manner at the terminal side.