WO2014019172A1

WO2014019172A1 - Method for sending enhanced physical downlink control channel (epdcch), base station, and terminal

Info

Publication number: WO2014019172A1
Application number: PCT/CN2012/079510
Authority: WO
Inventors: 吴强; 高驰; 刘建琴
Original assignee: 华为技术有限公司
Priority date: 2012-08-01
Filing date: 2012-08-01
Publication date: 2014-02-06
Also published as: CN103891343B; CN103891343A

Abstract

Embodiments of the present invention relate to a method for sending an enhanced physical downlink control channel (ePDCCH), a base station, and a terminal. Physical resources one ePDCCH is mapped to comprise at least one control channel component member; one physical resource block pair can be used for sending at least two control channel component members, and can be divided into at least two areas, and comprised REs are respectively corresponding to at least two control channel component members; the at least two control channel component members respectively have different numbers of control channel component members; and the number of a control channel component member corresponding to at least one RE in one area of the at least two areas has a one-to-one mapping relationship with the number of a control channel component member corresponding to an RE in at least another area of the at least two areas; a base station determines an RE corresponding to a control channel component member in the physical resource block; and the base station sends control information borne by the control channel component member through the RE corresponding to the control channel component member in the physical resource block.

Description

Enhanced physical downlink control channel, ePDCCH transmission method, base station and terminal

The present invention relates to the field of communications technologies, and in particular, to an enhanced physical downlink control channel ePDCCH transmission method, a base station, and a terminal. BACKGROUND In the prior art, a physical resource block (PRB), an enhanced control channel element (eCCE) or an enhanced resource group (Enhanced Resource Group) eREG ), cyclically loops the map according to the frequency domain and then the time domain.

However, due to the overhead of each Orthogonal Frequency Division Multiplexing (OFDM) symbol in the PRB pair, for example, Common Reference Signal (CRS), Channel-State Information Reference Signal (Channel-State Information Reference Signal) , CSI-RS) or Demodulation Reference Signal (DMRS) is unevenly distributed. Therefore, the size of resources (Resource Element, RE) occupied by various patterns of eCCE or eREG is unbalanced after the overhead is removed. , resulting in unbalanced eCCE or eREG transmission performance of various patterns. SUMMARY OF THE INVENTION Embodiments of the present invention provide an enhanced physical downlink control channel ePDCCH transmission method, a base station, and a terminal, which implements an RE occupied by members of control channel components of various patterns in a balanced PRB pair, and equalizes control channel composition of various patterns. Member's transmission performance.

In an aspect, an embodiment of the present invention provides an enhanced physical downlink control channel ePDCCH transmission method, where an ePDCCH includes at least one control channel component member, and one physical resource block pair can be used to send at least two control channel components. The physical resource block pair is divided into at least two areas, and the physical resource block pair includes the at least two control channel component members, and the at least two control channel component members respectively have different control channels. a member number, a control corresponding to at least one RE in one of the at least two regions a channel component member number, and a corresponding relationship exists between the control channel component number corresponding to the RE in the at least one of the at least two regions;

The method includes:

Determining, by the base station, a corresponding RE of the control channel component to be sent in the physical resource block; the base station transmitting, by using the control channel component to be sent, a component of the control channel in a corresponding RE of the physical resource block .

An embodiment of the present invention further provides an enhanced physical downlink control channel ePDCCH transmission method, where an ePDCCH includes at least one control channel component member, and one physical resource block pair can be used to send at least two control channel component members, where the physical component The resource block pair is divided into at least two areas, and the resource unit REs of the physical resource block pair respectively correspond to at least two control channel component members, and the at least two control channel component members respectively have different control channel component members. The number of the control channel corresponding to the at least one RE in the at least one of the at least two areas is a member number, and the control channel corresponding to the RE in the at least one of the at least two areas forms a member number. There is a one-to-one correspondence;

The method includes:

And the control channel component member sent by the base station in the physical resource block by the control channel component member, and the RE corresponding to the control channel component member in the physical resource block is determined by the base station;

The terminal decodes data included in a component of the control channel.

On the other hand, an embodiment of the present invention further provides a base station, where an ePDCCH includes at least one control channel component, and one physical resource block pair can be used to send at least two control channel components, and the physical resource block pair is divided into at least The two resource regions RE of the physical resource block pair respectively correspond to at least two control channel component members, and the at least two control channel component members respectively have different control channel component member numbers, and the at least two A control channel corresponding to at least one RE in one of the regions is a member number, and a corresponding relationship exists between the control channel component number corresponding to the REs in the other at least one of the at least two regions;

The base station includes:

a processor, configured to determine a corresponding RE of the control channel component member to be sent in the physical resource block; And transmitting, by the processor, the control channel component that is to be sent by the processor, to send the control channel component member to a corresponding RE in the physical resource block.

The embodiment of the present invention further provides a terminal, where an ePDCCH includes at least one control channel component, and one physical resource block pair can be used to send at least two control channel components, and the physical resource block pair is divided into at least two regions. The resource unit REs of the physical resource block pair respectively correspond to at least two control channel component members, and the at least two control channel component members respectively have different control channel component member numbers, and the at least two regions are in the at least two regions. The control channel corresponding to the at least one RE in the area constitutes a member number, and the control channel corresponding to the RE in the at least one of the at least two areas has a corresponding relationship between the member numbers; the terminal includes :

a receiver, configured to receive, by a control channel component member, a control channel component that is sent by a base station in a corresponding RE of the physical resource block, where a corresponding RE of the control channel component member in the physical resource block is The base station determines;

And a processor, configured to decode data included in a component of the control channel.

The method, the base station and the terminal for transmitting the enhanced physical downlink control channel ePDCCH provided by the embodiment of the present invention. The PRB pair may be divided into at least two regions, and the REs included in the PRB pair respectively correspond to at least two control channel constituent members having different numbers, and the control channel corresponding to any RE in one of the at least two regions constitutes a member number. There is a one-to-one correspondence between the control channel component numbers corresponding to the REs in the at least one area, so that the REs corresponding to the control channel component members determined by the base station can include various numbered control channel component members. The control channel that removes the pilot overhead consists of the number of REs included in the member number as balanced as possible, and equalizes the transmission performance of the members of the control channels of various patterns. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below, and obviously, in the following description The drawings are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

1 is a flowchart of an embodiment of an enhanced physical downlink control channel ePDCCH sending method according to the present invention; 2 is a schematic diagram of pilot overhead of a normal cyclic prefix subframe;

FIG. 3 is a schematic diagram of a base station according to the present invention dividing a PRB pair into two time-frequency regions of the same size according to a frequency domain;

4 is a schematic diagram of a base station according to the present invention dividing a PRB pair into two time-frequency regions of the same size according to a time domain;

FIG. 5 is a schematic diagram of a base station according to the present invention dividing a PRB pair into four time-frequency regions of the same size according to a time domain and a time domain;

6 is a flowchart of still another embodiment of an enhanced physical downlink control channel ePDCCH sending method according to the present invention;

7 is a schematic diagram of a base station according to the present invention assigning all REs included in a PRB pair to four types of eCCEs;

8 is a schematic diagram of pilot overhead occupied by various numbers of eCCEs in the allocation mode shown in FIG. 7;

FIG. 9 is a schematic diagram of a base station according to the present invention assigning all REs included in a PRB pair to eight numbers of eREGs;

10 is a schematic diagram of pilot overhead occupied by various numbers of eREGs in the allocation mode shown in FIG. 9;

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

FIG. 12 is a schematic structural diagram of an embodiment of a terminal provided by the present invention. The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The techniques described herein can be used in a variety of communication systems, such as current 2G, 3G communication systems and next generation communication systems, such as Global System for Mobile Communications (GSM), Code Division Multiple Access (CDMA, Code Division Multiple). Access) system, Time Division Multiple Access (TDMA) system, Wideband Code Division Multiple Access (WCDMA), Frequency FDMA (Frequency Division Multiple Addressing) system, Orthogonal Frequency-Division Multiple Access (OFDMA) system, single carrier FDMA (SC-FDMA) system, general packet radio service (GPRS, General Packet Radio Service) Systems, Long Term Evolution (LTE) systems, and other such communication systems.

A base station (e.g., an access point) referred to in this application may refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), this application is not limited.

The terminal involved in the present application, that is, the user equipment, may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connection function, or is connected to Other processing devices for wireless modems. The wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal The computers, for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network. For example, Personal Communication Service (PCS), Cordless Phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), etc. . A wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.

The term "and/or" in this context is merely an association describing the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "," in this article, generally means that the contextual object is an "or" relationship.

FIG. 1 is a flowchart of an embodiment of a method for transmitting an enhanced physical downlink control channel ePDCCH according to the present invention. As shown in FIG. 1 , a physical resource to which an ePDCCH is mapped includes at least one control channel component member and one physical resource block. The pair of physical resource blocks can be used to transmit at least two control channel components, and the physical resource block pair is divided into at least two regions, and the resource resource REs included in the physical resource block pair respectively correspond to at least two control channel component members, and at least two control channels Each of the component members has a different control channel group member number, and the control channel corresponding to at least one RE in at least one of the at least two regions constitutes a member number, and the control corresponding to the REs in at least one of the at least two regions There is a correspondence between the channel component member numbers.

The method includes:

5101. The base station determines, by the control channel, a corresponding RE of the member in the physical resource block.

5102. The base station sends, by using the control channel component member, the control information carried by the control channel component member in a corresponding RE of the physical resource block.

Optionally, the control channel component member may include a resource element set or an eREG corresponding to the eCCE.

The base station sends a control channel to form a member, and can use a centralized ePDCCH or a distributed ePDCCH. For a centralized ePDCCH, the base station may send an eCCE on at least one PRB pair RE, and the transmitted eCCEs are concentrated in one or two PRB pairs; for the distributed ePDCCH, the base station may send an eREG on at least one PRB pair RE, and send The eREG is dispersed among multiple PRB pairs.

In Figure 2, the structure of a Resource Block (RB) of a normal CP (Cyclic Prefix) downlink subframe is shown. An RB pair contains two slots in the time domain, each slot has 7 OFDM symbols, and a normal CP subframe has 14 OFDM symbols. As shown in FIG. 2, the 0-6th OFDM symbols belong to the first slot; the 7-13rd OFDM symbol belongs to the second slot. In the frequency domain, an RB pair contains 12 subcarriers in the frequency domain, as shown in Figure 2. The 12 subcarriers in an RB pair can be numbered 0-11, and the numbering rules can be in the order of frequency from low to high, or in descending order of frequency. A certain subcarrier within a certain OFDM symbol is called a Resource Element (RE), and the 0th subcarrier of the 0th OFDM symbol in FIG. 2 is an RE. In actual transmission, the RB pair used by the physical resource is also called a physical resource block pair (PRB pair). For convenience of presentation, in the embodiment of the present invention, the ith row represents the ith subcarrier (i=0 to 11), and the jth column represents the jth OFDM symbol (j=0-13). The jth RE in the ith row of the PRB pair is the RE corresponding to the jth OFDM symbol on the i th subcarrier in the PRB pair.

Figure 2 is also a schematic diagram of the pilot overhead of a normal cyclic prefix subframe, as shown in Figure 2, each row includes

14 OFDM symbols, each column comprising 12 subcarriers. A square in Figure 2 represents an RE. As can be seen from FIG. 2, for the CRS, if the PRB pair is divided into upper and lower parts with the same number of lines, the number of the CRS mapped to the RE of the upper part and the number of the CRS mapped by the RE of the corresponding position in the lower part are the same. For example, the CRS number mapped by the RE in the second row and the 0th column of the upper part is 0, and the CRS number mapped by the RE in the 8th row and the 0th column of the corresponding position in the lower part is also 0, that is, the i-th subcarrier of the same row and The CRS numbers of the i+6th subcarriers are the same.

Similarly, for CSI-RS, in the column without DMRS, for example: column 0-4 and 7-11 歹|J, if the PRB is divided into two time-frequency regions of the same size according to the frequency domain, then The CSI-RS mapped by the RE in the part of the time-frequency region is the same as the pattern of the CSI-RS mapped by the RE at the corresponding position in the lower part. That is, for the RE of the same column, if the RE of the i-th row in the upper-region time-frequency region is mapped to one CSI-RS pattern, the RE of the i+6th row in the time-frequency region of the lower portion of the same column is also mapped to the same. CSI-RS pattern. For example, if the RE of the 0th row and the 9th column is mapped to the port of the pattern 2 of the CSI-RS, the RE of the 0+6=6th row and the 9th column is also mapped to the port of the pattern 2 of the CSI-RS.

In columns with DMRS, for example: columns 5-6 and columns 12-13, the CSI-RS pattern satisfies the upper and lower mirror symmetry. That is, for the RE of the same column, if the RE of the i-th row (i starts from 0) in the upper-frequency region of the upper portion is mapped to one CSI-RS pattern, the 11-i row in the time-frequency region of the lower portion of the same column The RE is also mapped to the CSI-RS pattern. For example: The RE of the second row and the fifth column of the upper part is mapped to the port of the CSI-RS pattern 1, and the RE of the fifth row and the fifth column of the lower part is also mapped to the port of the CSI-RS pattern 1.

Since some REs need to be configured as DMRS in each PRB pair, the DMAS cannot be used for ePDCCH transmission. In addition, in actual transmission, some REs need to be mapped to pilots such as CRS or CSI-RS, and these pilots cannot be used for ePDCCH transmission.

Accordingly, in the embodiment of the present invention, the PRB pair may be divided into at least two regions, and optionally, each PRB pair in at least one PRB pair is divided into at least two regions.

Specifically, as shown in FIG. 3, the PRB pair may be divided into two time-frequency regions of the same size according to the frequency domain; or, as shown in FIG. 4, the PRB pairs may be divided into two time-frequency regions of the same size according to the time domain. ; Alternatively, as shown in FIG. 5, the PRB pair may also be divided into four time-frequency regions of the same size according to the time domain and the frequency domain. It can be understood that the PRB pair can also be divided into other numbers of time-frequency regions, which are not enumerated here.

It should be noted that FIG. 3 to FIG. 5 are only a few feasible implementation scenarios, and the PRB pair may be symmetrically divided into at least two regions, or may be asymmetrically divided into at least two regions. For example, PRB

The OFDM symbol whose sequence number is even may be divided into one time-frequency region; or, the number of the sub-carriers in the PRB pair may be divided into one time-frequency region, and the number of the sub-carriers in the PRB pair may be divided into A time-frequency region.

A control channel composed of a CRS, a CSI-RS, and the like, and a control channel composed of a channel having a certain component number, and a control channel corresponding to at least one RE in at least one of the two regions The member number has a corresponding relationship with the control channel group number corresponding to the REs in at least one of the other areas. Therefore, the same CRS port, or the RE of the same CSI-RS pattern, can be uniformly mapped to the control channel members of the various control channels that form the member number, and the pilot overheads such as CRS and CSI-RS can be removed. The number of REs mapped by the subsequent numbered control channel constituent members is as balanced as possible.

As a feasible embodiment, if two time-frequency regions of the same size are divided according to the frequency domain or four time-frequency regions of the same size according to the time domain and the frequency domain, at least one RE in one time-frequency region corresponds to The control channel constitutes a member number, and the first corresponding relationship exists between the control channel component number corresponding to the REs in the other at least one time-frequency region.

Optionally, in the implementation scenario, if two time-frequency regions of the same size are divided according to the frequency domain or four time-frequency regions of the same size according to the time domain and the frequency domain, any one of the time-frequency regions is used. A control channel corresponding to an RE constitutes a member number, and a first correspondence relationship may be established according to the first rule between the control channel component number corresponding to the RE in another time-frequency region.

In an implementation scenario, the physical resource block pair includes f subcarriers, and f is an even number. If two time-frequency regions of the same size are divided according to the frequency domain, the first rule may include: when one of the two time-frequency regions The control channel corresponding to the RE corresponding to the jth OFDM symbol on the i-th subcarrier in the frequency resource group is composed of a member number, and is located in another time-frequency region of the two time-frequency regions and located in the physical resource. Corresponding to the jth OFDM symbol on the i+f/2th subcarrier in the block In the other implementation scenario, the physical resource block pair includes f subcarriers, and f is an integer greater than or equal to 2, if divided according to the frequency domain. For the two time-frequency regions of the same size, the first rule may further include: an RE corresponding to the j-th OFDM symbol in the one of the two time-frequency regions and located on the i-th sub-carrier in the pair of physical resource blocks The corresponding control channel constitutes a member number, and the control channel corresponding to the RE corresponding to the jth OFDM symbol in the other time-frequency region of the two time-frequency regions and located in the fi-subcarrier of the physical resource block constitutes a member number There is a first correspondence between them.

Optionally, the control channel corresponding to any RE in one of the two time-frequency regions has a member number of k, and the control channel corresponding to one RE of the other time-frequency region has a member number of n, A correspondence may include: k+n=N-1, where N is the number of members of the control channel that the physical resource block can send, and the value of k is an integer greater than or equal to 0 and less than or equal to N-1. The value of n is an integer greater than or equal to 0 and less than or equal to N-1; or

The control channel corresponding to any RE in one of the two time-frequency regions has a member number of k, and the control channel corresponding to one RE in another time-frequency region has a member number of n, and the first correspondence may be Including: n=M0D ( k+q , N ), N is the number of members of the control channel that the physical resource block can send, MOD is the modulo operation, and the value of k is greater than or equal to 0 and less than or equal to N. An integer of -1, where n is an integer greater than or equal to 0 and less than or equal to N-1, and q is an integer greater than or equal to 0 and less than or equal to N-1; or

The control channel corresponding to any RE in one of the two time-frequency regions has a member number of k, and the control channel corresponding to one RE in another time-frequency region has a member number of n, and the first correspondence may be It can be: if k is greater than P-1, then n=T-1-k; if k is less than or equal to P-1, then n=P-1 -k, where T is the number of subcarriers included in the physical resource block pair , P=N/2, k is an integer greater than or equal to 0 and less than or equal to N-1, and n is an integer greater than or equal to 0 and less than or equal to N-1, where N is a physical resource block For the number of members of the control channel that can be transmitted, N is an even number. As another feasible embodiment, if two time-frequency regions of the same size are divided according to the frequency domain or four time-frequency regions of the same size according to the time domain and the frequency domain, at least one RE in one time-frequency region is used. The corresponding control channel constitutes a member number, and a second correspondence relationship may exist between the control channel component number corresponding to the REs in the at least one time-frequency region. Optionally, if two time-frequency regions of the same size are divided according to the time domain or four time-frequency regions of the same size according to the time domain and the frequency domain, the control channel corresponding to any RE in one time-frequency region A member number is formed, and a second correspondence relationship is established according to the second rule between the control channel component number corresponding to the RE in another time-frequency region.

In an implementation scenario, the physical resource block pair has g OFDM symbols on one subcarrier, and g is an even number. If two time-frequency regions of the same size are divided according to the time domain, the second rule may include: The control channel corresponding to the RE corresponding to the jth OFDM symbol on the i-th subcarrier in the time-frequency region and in the time-frequency region is composed of the member number, and the other in the two time-frequency regions There is a second correspondence between the control channel component number corresponding to the RE corresponding to the j+g/2 OFDM symbols in the time-frequency region and located on the i-th subcarrier in the physical resource block;

In another implementation scenario, the physical resource block pair has g OFDM symbols on one subcarrier, and g is an even number. If two time-frequency regions of the same size are divided according to the time domain, the second rule may include: The control channel corresponding to the RE corresponding to the jth OFDM symbol in the one of the two time-frequency regions and located in the time-frequency region of the physical resource block pair, and the other two time-frequency regions There is a second correspondence between the control channel component member numbers corresponding to the REs corresponding to the gj OFDM symbols in the IF subcarriers in the OFDM region.

Optionally, the control channel corresponding to any RE in one of the two time-frequency regions has a member number of k, and the control channel corresponding to one RE in the other time-frequency region constitutes a member number n, and the second The correspondence may be: k+n=N-1, where N is the number of members of the control channel that the physical resource block can send, and the value of k is an integer greater than or equal to 0 and less than or equal to N-1, n The value is greater than or equal to 0 and less than or equal to an integer of N-1; or

The control channel corresponding to any RE in one of the two time-frequency regions has a member number of k, and the control channel corresponding to one RE in another time-frequency region has a member number of n, and the second correspondence may be For example: n=M0D ( k+q, N ), where N is the number of members of the control channel included in the pair of physical resource blocks, MOD is the modulo operation, and the value of k is greater than or equal to 0 and less than or equal to N. An integer of -1, where n is an integer greater than or equal to 0 and less than or equal to N-1, and q is an integer greater than or equal to 0 and less than or equal to N-1;

A control channel corresponding to any RE in one of the two time-frequency regions is formed into a control channel The member number is k, and the control channel corresponding to one RE in another time-frequency region is composed of member number n, and the second correspondence is: if k is greater than or equal to P-1, then n=T-1 -k; if k is less than P-1, then n=P-1-k,

T is the number of subcarriers included in the pair of physical resource blocks, P=N/2, where N is the number of members of the control channel that the physical resource block can transmit, and N is an even number. Optionally, the two control channel component numbers of the presence-correspondence relationship may be different, thereby further enabling the REs in each region to be uniformly mapped to the control channel component members of the different control channel component member numbers.

Optionally, at least one of the two REs corresponding to the control channel constituent number of the corresponding relationship may be an RE that does not carry the demodulation reference signal DMRS, so that the CRS and CSI-RS pilot overhead are removed, and the removal is performed. The DMRS overhead RE can be uniformly mapped to various numbered control channel constituent members.

Optionally, the REs on the at least one subcarrier included in any one of the at least two regions may correspond to the at least two control channel component members. The RE on each subcarrier included in any one of the at least two regions may correspond to at least two control channel constituent members.

Alternatively, the RE on at least one orthogonal frequency division multiplexing OFDM symbol included in any one of the at least two regions may correspond to at least two control channel constituent members. The RE on each orthogonal frequency division multiplexing OFDM symbol included in any one of the at least two regions may correspond to at least two control channel constituent members.

In the method for transmitting the enhanced physical downlink control channel (ePDCCH) provided by the embodiment, the PRB pair may be divided into at least two regions, and the REs included in the P RB pair respectively correspond to at least two control channel component members having different numbers, at least two A control channel corresponding to any RE in an area of the area is a member number, and a corresponding relationship exists between the control channel component numbers corresponding to the REs in the at least one area, so that the control channel component members determined by the base station correspond to each other. The REs can uniformly include various numbered control channel constituent members, and the control channel component number that implements the removal of the pilot overhead is as balanced as possible, and the transmission performance of the control channels of the various patterns is balanced. FIG. 6 is a flowchart of still another embodiment of an enhanced physical downlink control channel ePDCCH sending method according to the present invention. As shown in FIG. 6, a physical resource to which an ePDCCH is mapped includes One of the control channel component members, one physical resource block pair can be used to transmit at least two control channel component members, the physical resource block pair is divided into at least two regions, and the physical resource block pair includes the resource unit RE corresponding to at least two Each of the control channel component members, the at least two control channel component members respectively have different control channel component member numbers, and the control channel corresponding to at least one RE in at least one of the at least two regions constitutes a member number, and at least two regions The control channel corresponding to the RE in the other at least one area has a correspondence relationship between the member numbers; the method includes:

5601. The terminal, by the control channel, forms a member of the control channel that is sent by the corresponding RE in the physical resource block, and the corresponding RE of the control channel component in the physical resource block is determined by the base station.

S602: Parse control information carried by the member of the control channel component.

The method for dividing a region in a PRB pair, and a control channel corresponding to at least one RE in at least one of the at least two regions, and a control channel corresponding to the REs in at least one of the at least two regions For the specific relationship between the component numbers and the corresponding ones, refer to the related description in the embodiment shown in FIG. 1 , and details are not described herein again. The REs of the candidate set maps are detected one by one, and the control information carried by the members of the control channel components can be analyzed. The process of detecting the REs of the candidate set mapping one by one according to the aggregation level and the number of ePDCCH candidate sets corresponding to the aggregation level to obtain the control information carried by the control channel component members sent by the base station is a prior art, where No longer.

In the method for transmitting the enhanced physical downlink control channel (ePDCCH) provided by the embodiment, the PRB pair may be divided into at least two regions, and the REs included in the P RB pair respectively correspond to at least two control channel component members having different numbers, at least two A control channel corresponding to any RE in an area of the area is a member number, and a corresponding relationship exists between the control channel group numbers corresponding to the REs in the at least one area, so that the control channel component members received by the terminal correspond to each other. The REs can be composed of various numbered control channel components, and the number of REs included in the control channel component number of the control channel to remove the pilot overhead is balanced as much as possible, and the transmission performance of the control channel components of various patterns is balanced. The following is a description of the method for transmitting the ePDCCH provided by the present invention. The method for transmitting the ePDCCH provided by the present invention is described below by taking the example of the resource unit corresponding to the eCCE.

In this embodiment, as shown in FIG. 7, the base station allocates all the REs included in the PRB pair to the resource unit set corresponding to the eCCE of the four numbers (number 0-number 3), and all the REs of the eCCE in the entire PRB pair. Map on. It should be noted that the resource unit set number corresponding to the eCCE included in the PRB pair may also be other numbers, for example: 2.

Referring to FIG. 3, the base station may divide the PRB pair into two time-frequency regions of the same size according to the frequency domain, which are referred to herein as a first region and a second region, where the first region and the second region include the same subcarrier and the same The RE of the OFDM symbol has a first correspondence relationship between the resource element set number corresponding to the eCCE corresponding to one RE in the first region and the resource unit set number corresponding to the eCCE corresponding to the RE in the second region.

The PRB pair includes f subcarriers, and f is an even number. In this embodiment, f may be equal to 12, if the two time-frequency regions of the same size are divided according to the frequency domain, in one time-frequency region and located in the PRB pair. The control channel corresponding to the RE corresponding to the jth OFDM symbol on the subcarriers constitutes a member number, and is located in another time-frequency region and is located on the i+6 (ie, the i+f/2)th subcarrier in the PRB. There is a first correspondence between the control channel constituent member numbers corresponding to the RE corresponding to the jth OFDM symbol.

That is, the resource unit set number corresponding to the eCCE corresponding to the RE corresponding to the jth OFDM symbol on the i th subcarrier in the first region, and the i+6th subordinate in the second region and located in the PRB There is a first correspondence between the resource element set numbers corresponding to the eCCEs corresponding to the REs corresponding to the jth OFDM symbols on the carrier. It can be understood that the resource unit set number corresponding to the eCCE corresponding to the RE corresponding to the jth OFDM symbol on the i th subcarrier in the second region and the i-6 in the PRB in the first region There is a first correspondence between the resource element set numbers corresponding to the eCCEs corresponding to the REs corresponding to the jth OFDM symbols on the subcarriers.

In this embodiment, the resource unit set number corresponding to the eCCE corresponding to any RE in the first area is k, and the resource unit set number n corresponding to the eCCE corresponding to one RE in the second area, the first corresponding relationship may be: k+n=N-1, where N is the number of resource element sets corresponding to the eCCEs that the PRB can transmit, and the value of k is an integer greater than or equal to 0 and less than or equal to N-1, n The value is an integer greater than or equal to 0 and less than or equal to N-1.

In this implementation scenario, the base station may first allocate the resource element set number corresponding to the eCCE for all the REs included in the first area, for example, the RE corresponding to the eCCE may be allocated according to the RE in the pre-time domain or the pre-frequency domain. After the resource unit set number, the base station may allocate the resource unit set number corresponding to the eCCE to the RE in the second area according to the correspondence of k+n=N-1. It is to be understood that the base station may also allocate a resource unit corresponding to the eCCE with the number 0-3 to the resource unit set corresponding to the eCCE for all the REs included in the second area, and allocate the resource unit corresponding to the eCCE by the RE in the second area. After the number of the set, the base station may allocate the resource unit set number corresponding to the eCCE to the RE in the first area according to the correspondence between k+n=N-1.

Similarly, as another feasible implementation manner, referring to FIG. 4, the base station may divide the PRB pair into two time-frequency regions of the same size according to the time domain, which are referred to as a first region and a second region, respectively. The RE of the same subcarrier and the same OFDM symbol in the area and the second area, the resource unit set number corresponding to the eCCE corresponding to one RE in the first area, and the resource unit set number corresponding to the eCCE corresponding to the RE of the peer in the second area There is a second correspondence.

The PRB block pair may have g OFDM symbols on one subcarrier, and g is an even number. In this embodiment, g may be equal to 14, if two time-frequency regions of the same size are divided according to the time domain, in one time-frequency region. The resource element set number corresponding to the eCCE corresponding to the RE corresponding to the jth OFDM symbol on the i th subcarrier in the PRB pair, and the jth in the other time-frequency region and located on the i-th subcarrier in the PRB There is a second correspondence between the resource element set numbers corresponding to the eCCE corresponding to the RE corresponding to the RE corresponding to the dj symbol.

That is, the resource element set number corresponding to the eCCE corresponding to the RE corresponding to the jth OFDM symbol on the i th subcarrier in the first region, and the number on the i th subcarrier in the PRB in the second region There is a second correspondence between the resource element set numbers corresponding to the eCCEs corresponding to the REs corresponding to the j+7 OFDM symbols. It can be understood that the resource unit set number corresponding to the eCCE corresponding to the RE corresponding to the jth OFDM symbol on the i th subcarrier in the second region, and the i i in the first region and located in the PRB There is a second correspondence between the resource element set numbers corresponding to the eCCEs corresponding to the REs corresponding to the j-7th OFDM symbols on the subcarriers. In this embodiment, the resource unit set number corresponding to the eCCE of one RE in the first area is k, and the resource unit set number n corresponding to the eCCE of the RE in the second area, and the second correspondence relationship may be: k+n=N -1 , where N is the number of resource element sets corresponding to the eCCEs that the PRB can transmit, and the value of k is an integer greater than or equal to 0 and less than or equal to N-1, and the value of n is greater than or equal to 0. And an integer less than or equal to N-1.

The locations of the DMRS, CRS, and CSI-RS overheads in the PRB pair shown in Figure 7 can be seen in Figure 2. Figure 8 shows the number of REs occupied by a different pilot port in a PRB pair in the PRB-to-RE allocation mode shown in Figure 7. It can be seen that, for different CRSs, different configurations, the number of CRSs in the resource element set corresponding to each numbered eCCE is balanced, and the number of CSI-RSs in the resource element set corresponding to each numbered eCCE is balanced.

As another feasible implementation manner, referring to FIG. 5, the base station may further divide the PRB pair into four time-frequency regions of the same size according to the time domain and the frequency domain. The resource unit set number corresponding to the eCCE corresponding to the at least one RE in the time-frequency area i or the one of the two time-frequency areas i or the same in the frequency domain is the same as the RE in the other time-frequency area. The first corresponding relationship exists between the resource unit set numbers corresponding to the eCCEs; the resource unit set numbers corresponding to the eCCEs corresponding to at least one RE in one time-frequency region, and the time-domain divided into two time-frequency regions having the same size, and There is a second correspondence between resource element set numbers corresponding to eCCEs corresponding to REs in another time-frequency region. For a description of the first corresponding relationship and the second corresponding relationship, refer to related descriptions in the embodiments shown in FIG. 1 and FIG. 7 , and details are not described herein again. The following is a description of the method for transmitting the ePDCCH provided by the present invention by providing an eREG as a member of the control channel.

In this embodiment, as shown in FIG. 9, the base station allocates all REs included in the PRB pair to eight types of eREGs (numbered 0-number 7), and the eREG maps all REs in the entire PRB pair. It should be noted that the eREG number included in the PRB pair may also be other numbers, for example: 16.

Referring to FIG. 3, the base station may divide each PRB pair into two time-frequency regions of the same size according to the frequency domain, which are referred to herein as a third region and a fourth region, and the third region and the fourth region include the same subcarrier. And the RE of the same OFDM symbol, the eREG number corresponding to one RE in the third area The first correspondence relationship exists between the eREG numbers corresponding to the REs in the same area in the fourth area.

In an implementation scenario, the physical resource block pair includes f subcarriers, and f is an even number. If the two time-frequency regions of the same size are divided according to the frequency domain, the ith subcarrier in the one time-frequency region and located in the PRB pair The control channel corresponding to the RE corresponding to the jth OFDM symbol constitutes a member number, and the jth in the other time-frequency region and located on the i+6th (ie, i+f/2)th subcarrier in the PRB There is a first correspondence between the control channel constituent member numbers corresponding to the REs corresponding to the OFDM symbols.

That is, the eREG number corresponding to the RE corresponding to the jth OFDM symbol in the third region and located on the i th subcarrier in the PRB pair, and the jth in the fourth region and located on the i+6th subcarrier in the PRB There is a first correspondence between the eREG numbers corresponding to the REs corresponding to the OFDM symbols. It can be understood that the eREG number corresponding to the RE corresponding to the jth OFDM symbol in the fourth region and located on the i th subcarrier in the PRB pair is located on the i-6th subcarrier in the third region and located in the PRB. There is a first correspondence between the eREG numbers corresponding to the REs corresponding to the jth OFDM symbol.

In this embodiment, the eREG number corresponding to any RE in the third area is k (the column in which the RE is located does not include the demodulation reference signal DMRS), and the eREG number n of the RE in the fourth area, the first correspondence may be : n=MOD ( k+q, N ), where N is the number of eREGs included in the PRB pair (N is 8 in this embodiment), MOD is the modulo operation, and the value of k is greater than or equal to 0. And an integer less than or equal to N-1, where n is an integer greater than or equal to 0 and less than or equal to N-1, and q is an integer greater than or equal to 0 and less than or equal to N-1 (eg, q may be taken 4).

The PRB pair does not include the DMRS column 0-4, and columns 7-11. Assume that for the same column, the eREG of the RE in the third region is numbered k, and the eREG of the RE in the fourth region is numbered n, and B ' J n = MOD(k + q, N). MOD represents the ear operation, and MOD(a, b) represents the operation of a^M mo b. Suppose that i denotes a row and j denotes a column. If the i-th row j column of the PRB pair belongs to a certain RE of the third region, and the eREG number k of the RE belongs to the i-th row of the PRB pair, the jth The number of the eREG of the RE belonging to the fourth region is n=MOD(k+q, N). When q is taken as 4, it can be concluded that the correspondence between the eREG number k of the RE of the i-th row j column belonging to the third region and the eREG number n of the RE of the i+6th row and the jth column belonging to the fourth region may be For:

0 < >4, 1 < >5, 2 < >6, 3 < >7.

Optionally, in another implementation scenario, the PRB pair includes f subcarriers, and f is greater than or equal to An integer of 2, f may be equal to 11, corresponding to the RE of the jth OFDM symbol on the i-th subcarrier in the PRB pair, in two time-frequency regions of the same size in the frequency domain. The corresponding control channel constitutes a member number, and exists between the control channel component number corresponding to the RE corresponding to the jth OFDM symbol on the 11th-i (ie, the fith) subcarrier in the PRB in another time-frequency region. The first correspondence.

That is, the eREG number corresponding to the RE corresponding to the jth OFDM symbol of the third region and located on the i th subcarrier of the PRB pair, and the jth of the eleventh subcarrier in the fourth region and located in the PRB There is a first correspondence between the eREG numbers corresponding to the REs corresponding to the OFDM symbols.

The eREG number corresponding to any RE in the third area is k (the column in which the RE is located includes the demodulation reference signal DMRS), and the eREG number n of the RE in the fourth region, the first correspondence may be: n=MOD (k +q, N ), where N is the number of eREGs included in the PRB pair (N is 8 in this embodiment), MOD is an ear operation, and the value of k is greater than or equal to 0 and less than or equal to N An integer of -1, where n is an integer greater than or equal to 0 and less than or equal to N-1, q is an integer greater than or equal to 0 and less than or equal to N-1 (eg, q can take 4).

The PRB pair includes DMRS columns as columns 5-6, and columns 12-13. In the REs in the third and fourth regions in the same column, rows 4 and 7 satisfy n=MOD (k+ q, N ); Lines 2 and 8 satisfy n = MOD ( k + q, N ); Lines 3 and 9 satisfy n = MOD ( k + q, N ).

As another feasible implementation manner, referring to FIG. 4, the base station may further divide each PRB pair into two time-frequency regions of the same size according to the time domain, which are referred to as a third region and a fourth region, respectively. The REs of the same subcarrier and the same OFDM symbol are included in the three regions and the fourth region, and the eREG number corresponding to one RE in the third region has a second corresponding relationship with the eREG number corresponding to the REs in the fourth region.

In this embodiment, the eREG number corresponding to any RE in the third area is k, and the eREG number n corresponding to one RE in the fourth area, and the second correspondence is: If k is greater than P-1, then n= T-1-k; if k is less than or equal to P-1, then n=P-1-k, T is the number of subcarriers included in the PRB pair, P=N/2, and N is the eREG that the PRB pair can transmit. The number of N, even is even.

For example, the eREG number k of any RE in any row in the third region and the eREG number n of another RE in the fourth region may be: if k is greater than 3, then n=11 -x; If k is less than 3, then n=3-k. In this example, T=12, Ν=8, Ρ=Ν/2=4. As another feasible implementation manner, referring to FIG. 5, the base station may further divide the PRB pair into four time-frequency regions of the same size according to the time domain and the frequency domain. The eREG number corresponding to at least one RE in one time-frequency region and the eREG number corresponding to the RE in another time-frequency region have a first correspondence relationship between the two time-frequency regions of the same time-frequency region. According to the time i or the two time-frequency zones i or the same size, the eREG number corresponding to at least one RE in one time-frequency zone i or the eREG number corresponding to the RE in another time-frequency zone exists The second correspondence. For a description of the first corresponding relationship and the second corresponding relationship, refer to related descriptions in the embodiments shown in FIG. 1 and FIG. 9 , and details are not described herein again. Based on the first correspondence relationship and the second correspondence relationship, when the eREG number is allocated to the REs in the PRB pair, if the eREG number of the RE in any time-frequency region is known, the REs in the other three time-frequency regions can be obtained. eREG number. For example, in any of the time-frequency regions, only the reference signal (RS) should be satisfied. For example, the eREG numbers of the REs of the CRS, CSI RS, etc. belong to the above two numbers of eREGs, respectively. The number of the numbers is basically the same.

Assuming that the correspondence between the eREG numbers of the REs in the two time-frequency regions divided by the frequency domain is k=MOD (n+q, N), the following correspondences of numbers can be obtained:

0 < >4, 3 < >7, 1 < >5, 2 < >6

Assume that the correspondence between the eREG numbers of the REs in the two time-frequency regions divided by the time domain is z=IF(x>3,11 -x,3-x), and the following correspondences of numbers can be obtained:

0 < >3, 1 < >2, 4 < >7, 5< >6

From the second correspondence, arbitrarily select a group of numbers, such as 0 < >3, and divide it into the first group number, according to the first group correspondence 0 < >4, 3 < >7, and get corresponding to 0, 3 The other two numbers are 4, 7, and the selected 4 numbers 0, 3, 4, and 7 are divided into the first group number; the remaining 4 numbers 1, 2, 5, and 6 are divided into the second group number. The first, second, third and fourth regions divide the entire PRB pair into four regions, see Figure 5.

The numbers on all REs of the PRB pair belong to the above two groups of numbers, and the number of REs having the first group number is the same as the number of REs having the second group number.

For example, in a scenario where the base station divides the PRB pairs into four time-frequency regions of equal size according to the time domain and the frequency domain, as shown in FIG. 9, in the upper left time-frequency region, the number of columns is 0 to 4 RE. , In the order of the first row and the last row, the eREG numbers of the REs are 1, 2, 4, and 7 in sequence; the REs with the number of columns 5 to 6 are in the order of the first row and the last column, and the eREG numbers of the REs are 1, 2, respectively. 4 and 7. Correspondingly, you can get:

In the lower left time-frequency region, the REs with the number of columns 0 to 4 are in the order of the first column and the following row. The eREG numbers of the REs are 5, 6, 0, and 3, respectively; the number of columns is 5 to 6 RE, according to the preceding line. The order of the columns, the eREG numbers of each RE are 5, 6, 0, and 3;

In the upper right time-frequency region, the REs with the number of columns from 7 to 11 are in the order of the first column and the last row. The eREG numbers of the REs are 2, 1, 7, and 4 in sequence; the REs with the number of columns is 12 to 13, according to the pre-emption The order of the columns, the eREG numbers of each RE are 2, 1, 7, and 4;

In the lower right time-frequency region, the REs with the number of columns from 7 to 11 are in the order of the first column and the last row. The eREG numbers of the REs are 6, 5, 3, and 0 in sequence; the REs with the number of columns is 12 to 13, according to the first line. In the order of the following columns, the eREG numbers of the respective REs are 6, 5, 3, and 0.

The locations of the DMRS, CRS, and CSI-RS overheads in the PRB pair shown in Figure 9 can be seen in Figure 2. Figure 10 shows the number of pilots occupied by different numbers of eREGs in different CRS and CSI-RS configurations in Figure 9. It can be seen that the different pilot configurations have the same number of pilots for each numbered eREG.

It should be noted that, in all the above embodiments, the correspondence between the control channel constituent members of the REs between the two regions may include:

The control channel corresponding to any RE in one time-frequency region is composed of member number k, and the control channel corresponding to one RE in another time-frequency region is composed of member number n. The first correspondence may be: k+n=N-1 N is the number of members of the control channel that the physical resource block can send. The value of k is an integer greater than or equal to 0 and less than or equal to N-1. The value of n is greater than or equal to 0 and less than or equal to An integer of N-1; or,

A control channel corresponding to any RE in a time-frequency region is composed of a member number k, and a control channel corresponding to one RE in another time-frequency region constitutes a member number n, and the first correspondence may be: n=MOD (k+ q, N ), N is the number of members of the control channel that the physical resource block can send, MOD is the modulo operation, and the value of k is greater than or equal to 0 and less than or equal to the integer of N-1. An integer having a value greater than or equal to 0 and less than or equal to N-1, q being an integer greater than or equal to 0 and less than or equal to N-1; or

The control channel corresponding to any RE in an time-frequency region is composed of member number k, and another time The control channel corresponding to one RE in the frequency region constitutes the member number n, and the first correspondence relationship may be: if k is greater than P-1, then n=T-1 -k; if k is less than or equal to P-1, then n= P-1 -k, T is the number of subcarriers included in the pair of physical resource blocks, P=N/2, where k is an integer greater than or equal to 0 and less than or equal to N-1, and the value of n is An integer greater than or equal to 0 and less than or equal to N-1, where N is the number of members of the control channel that the physical resource block can transmit, and N is an even number.

The above correspondence relationship is applicable to two time-frequency regions of equal size divided according to the time domain, and also applies to two time-frequency regions of equal size divided according to the frequency domain. In the above embodiment of the area division, the two areas can be divided into two upper and lower or two left and right areas. The upper and lower areas belong to the area divided in the frequency domain, and the left and right areas belong to the area divided in the time domain. Further, the area divided in the frequency domain may occupy 6 subcarriers per area, but not the subcarriers numbered 0-5 (0-5 lines in FIG. 3) is an area, and the number is 6-11. The carrier (lines 6-11 in Figure 3) is another area. For example, there is no symbol for DMRS (column 0-4 in Figure 5; columns 7-11). In the same column, there is a corresponding relationship between the i-th row (i=0 to 5) and the eCCE or eREG number of the RE of the i+6th row. However, one area is 0, 2, 4, 7, 9, 11 lines; the other area is 1st, 3, 5, 6, 8, 10 lines. That is, the i-th row (i=0 to 5) and the i+6th row respectively belong to different regions.

Similarly, according to the frequency domain division, the jth=0 to 6) OFDM symbols of the same subcarrier and the RE of the j+7th OFDM symbol have a correspondence relationship. It is also possible to use 0, 2, 4, 6, 8, 10, 12 OFDM symbols as the first region; 1 , 2, 5, 7, 9, 11 , 13 OFDM symbols as the second region. As long as the j-th = 0 to 6 OFDM symbols of the same-subcarrier are satisfied, and the j+7 OFDM symbols are in different regions. Moreover, the correspondence between the regions may follow the corresponding relationship of the above embodiments, and details are not described herein again. On the basis of the foregoing implementation, the base station may determine that the eCCE to be sent is the corresponding RE in the PRB pair, and the eCCE corresponds to any two eREGs; or, the base station may determine that the eCCE to be sent is in the physical resource block pair. The corresponding RE, the eCCE corresponds to any four eREGs. For example, the REs of the eREGs numbered 1 and 6 form an eCCE; the REs of the eREGs numbered 2 and 5 form a set of resource elements corresponding to one eCCE; and the REs of the eREGs with the number 4 and 4 An eCCE corresponding resource unit set; the REs occupied by the eREGs numbered 7 and 0 constitute a resource unit set corresponding to one eCCE. This also ensures that the number of REs occupied by the set of resource elements corresponding to different eCCEs is the same. FIG. 11 is a schematic structural diagram of an embodiment of a base station according to the present invention. As shown in FIG. 11, a physical resource to which an ePDCCH is mapped includes at least one control channel component, and one physical resource block pair can be used to send at least two controls. The channel component member, the physical resource block pair is divided into at least two regions, the resource resource unit RE includes the at least two control channel component members, and the at least two control channel component members respectively have different control channel components. a member number, a control channel corresponding to at least one RE in at least one of the at least two regions, and a member number, and a control channel corresponding to the RE in at least one of the at least two regions Correspondence relationship

The base station includes: a processor 11 and a transmitter 12;

The processor 11 is configured to determine a corresponding RE of the control channel component member in the physical resource block, and the transmitter 12 is configured to send, by using the control channel component member, the control channel in a corresponding RE of the physical resource block The control information carried by the members.

Optionally, the physical resource block pair is divided into at least two areas, including: each of the at least one physical resource block pair is divided into at least two areas.

Optionally, the two control channels that exist in the corresponding relationship have different member numbers.

Optionally, the REs on the at least one subcarrier included in any one of the at least two regions correspond to the at least two control channel component members; or the at least one orthogonal frequency included in any one of the at least two regions The REs on the divided OFDM symbols correspond to at least two control channel constituent members.

Optionally, the REs on the at least one subcarrier included in any one of the at least two regions correspond to the at least two control channel component members, including: on each subcarrier included in any one of the at least two regions RE corresponds to at least two control channel constituent members; or,

The RE on at least one orthogonal frequency division multiplexing OFDM symbol included in any one of the at least two regions corresponds to at least two control channel constituent members, including:

The RE on each orthogonal frequency division multiplexing OFDM symbol included in any one of the at least two regions corresponds to at least two control channel constituent members.

Optionally, at least one of the two REs corresponding to the control channel of the corresponding control channel is a RE that does not carry the demodulation reference signal DMRS.

Optionally, the physical resource block pair is divided into at least two areas, including: The time domain is divided into two time-frequency regions of the same size; or, the physical resource block pairs are divided into two time-frequency regions of the same size according to the frequency domain; or, the physical resource block pairs are divided into the same size according to the time domain and the frequency domain. Four time-frequency zones.

Optionally, the control channel corresponding to the at least one RE in the at least one of the at least two areas forms a member number, and the control channel corresponding to the RE in the at least one of the at least two areas forms a member number between the member numbers. - Correspondence, including:

If two time-frequency regions of the same size are divided according to the frequency domain or four time-frequency regions of the same size according to the time domain and the frequency domain, the control channel corresponding to at least one RE in one time-frequency region constitutes a member number, and There is a first correspondence between the control channel constituent member numbers corresponding to the REs in the at least one time-frequency region;

If two time-frequency regions of the same size are divided according to the time domain or four time-frequency regions of the same size according to the time domain and the frequency domain, the control channel corresponding to at least one RE in one time-frequency region constitutes a member number. There is a second correspondence between the control channel constituent member numbers corresponding to the REs in the other at least one time-frequency region.

Optionally, if two time-frequency regions with the same size in the frequency domain are divided into four time-frequency regions with the same size according to the time domain and the frequency domain, the control channel corresponding to at least one RE in one time-frequency region is formed. The member number is the first correspondence between the control channel member numbers corresponding to the REs in the at least one time-frequency region, including:

If two time-frequency regions of the same size are divided according to the frequency domain or four time-frequency regions of the same size according to the time domain and the frequency domain, the control channel corresponding to any RE in one time-frequency region constitutes a member number. A first correspondence relationship is established according to the first rule between the control channel constituent member numbers corresponding to the REs in another time-frequency region.

Optionally, the physical resource block pair includes f subcarriers, and f is an even number. If the two time-frequency regions of the same size are divided according to the frequency domain, the first rule includes: in a time-frequency region in the two time-frequency regions and The control channel group member number corresponding to the RE corresponding to the jth OFDM symbol on the i th subcarrier in the physical resource block pair, and the other time frequency region in the two time frequency regions and located in the physical resource block There is a first correspondence between the control channel component number corresponding to the RE corresponding to the jth OFDM symbol on the i+f/2 subcarriers; or, the physical resource block pair includes f subcarriers, and f is greater than or equal to 2 The first rule includes: if the two time-frequency regions are the same in size in the frequency domain, the first rule includes: in a time-frequency region in two time-frequency regions and located in a physical resource The control channel corresponding to the RE corresponding to the jth OFDM symbol on the i-th subcarrier in the block pair constitutes a member number, and in the other time-frequency region of the two time-frequency regions and located in the fi-subcarrier in the physical resource block There is a first correspondence between the control channel constituent member numbers corresponding to the RE corresponding to the jth OFDM symbol.

Optionally, the control channel corresponding to any RE in one of the two time-frequency regions has a member number of k, and the control channel corresponding to one RE of the other time-frequency region has a member number of n, A corresponding relationship includes: k+n=N-1, where N is the number of members of the control channel that the physical resource block can send, and the value of k is an integer greater than or equal to 0 and less than or equal to N-1, n The value is greater than or equal to 0 and less than or equal to an integer of N-1; or, the control channel corresponding to any RE in one of the two time-frequency regions has a member number of k, and another time-frequency The control channel corresponding to one RE in the area is composed of member numbers n, and the first correspondence includes: n=M0D ( k+q, N ), where N is the number of members of the control channel that the physical resource block can send, MOD For the modulo operation, the value of k is an integer greater than or equal to 0 and less than or equal to N-1, and the value of n is an integer greater than or equal to 0 and less than or equal to N-1, and q is greater than or equal to 0 and An integer less than or equal to N-1; or, in two The control channel corresponding to any RE in one time-frequency region has a member number of k, and the control channel corresponding to one RE in another time-frequency region has a member number n, and the first correspondence includes: If k is greater than P-1, then n=T-1 -k; if k is less than or equal to P-1, then n=P-1 -k, where T is the number of subcarriers included in the pair of physical resource blocks, P=N /2, k is an integer greater than or equal to 0 and less than or equal to N-1, and n is an integer greater than or equal to 0 and less than or equal to N-1, where N is a physical resource block pair capable of transmitting The number of members of the control channel, and N is an even number.

Optionally, if two time-frequency regions of the same size are divided according to the time domain or four time-frequency regions of the same size according to the time domain and the frequency domain, the control channel corresponding to at least one RE in one time-frequency region A member number is formed, and a second correspondence relationship exists between the control channel component numbers corresponding to the REs in the at least one time-frequency region, including: if the two time-frequency regions of the same size are divided according to the time domain or according to the time domain And the frequency domain is divided into four time-frequency regions of the same size, and the control channel corresponding to any RE in one time-frequency region constitutes a member number, and the control channel corresponding to the RE in another time-frequency region constitutes a member number according to the The second rule establishes a second correspondence.

Optionally, the physical resource block pair has g OFDM symbols on one subcarrier, and g is an even number. If two time-frequency regions of the same size are divided according to the time domain, the second rule includes: a control channel group member number corresponding to the RE corresponding to the jth OFDM symbol on the i-th subcarrier in the physical resource block pair in one time-frequency region, and another time-frequency in the two time-frequency regions There is a second correspondence between the control channel component number corresponding to the RE corresponding to the j+g/2 OFDM symbols on the i-th subcarrier in the physical resource block; or, the physical resource block pair is in one There are g OFDM symbols on the subcarriers, and g is an even number. If two time-frequency regions of the same size are divided according to the time domain, the second rule includes: in a time-frequency region in two time-frequency regions and located in a physical resource The control channel corresponding to the RE corresponding to the jth OFDM symbol on the i-th subcarrier in the block pair constitutes a member number, and the ith subcarrier in the other time-frequency region of the two time-frequency regions and located in the physical resource block There is a second correspondence between the control channel component member numbers corresponding to the REs corresponding to the gj OFDM symbols.

Optionally, the control channel corresponding to any RE in one of the two time-frequency regions has a member number of k, and the control channel corresponding to one RE in the other time-frequency region constitutes a member number n, and the second The correspondence is: k+n=N-1, where N is the number of members of the control channel that the physical resource block can send, and the value of k is an integer greater than or equal to 0 and less than or equal to N-1, n The value is greater than or equal to 0 and less than or equal to an integer of N-1; or, the control channel corresponding to any RE in one of the two time-frequency regions has a member number of k and another time-frequency region. The control channel corresponding to one RE is composed of member number n, and the second correspondence includes: n=M0D ( k+q, N ), where N is the number of members of the control channel included in the pair of physical resource blocks, and MOD is For the modulo operation, the value of k is an integer greater than or equal to 0 and less than or equal to N-1, and the value of n is an integer greater than or equal to 0 and less than or equal to N-1, and q is greater than or equal to 0 and less than Or an integer equal to N-1; or, in two The control channel corresponding to any RE in one time-frequency region in the frequency region is composed of member numbers, and the control channel corresponding to one RE in another time-frequency region is composed of member numbers n, and the second correspondence includes: P-1, then n=T-1 -k; if k is less than or equal to P-1, then n=P-1 -k, where T is the number of subcarriers included in the pair of physical resource blocks, P=N/2 N is the number of members of the control channel that the physical resource block can send, and N is an even number.

Optionally, the control channel component member includes a resource unit set or an enhanced resource unit group eREG corresponding to the enhanced channel control unit eCCE.

Optionally, the processor 12 is specifically configured to: determine a set of corresponding REs of the eCCE in the physical resource block, where one eCCE corresponds to any two eREGs; or, determine a set of corresponding REs of the eCCEs in the physical resource block, The eCCE corresponds to any four eREGs. The base station provided in this embodiment corresponds to the method for transmitting the enhanced physical downlink control channel ePDCCH provided by the embodiment of the present invention, and is an execution device of the method, and the process of executing the method can be seen in FIG. 1 to FIG. 5, and The corresponding description in the method embodiment shown in FIG. 10 will not be repeated here.

In the base station provided by this embodiment, the PRB pair may be divided into at least two areas, and the PRB pair includes

REs respectively correspond to at least two control channel members having different numbers, and control channels corresponding to any one of the at least two regions form a member number, and control channel members corresponding to REs in at least one other region There is a corresponding relationship between the numbers, so that the REs corresponding to the control channel component members determined by the base station can uniformly include the control channel constituent members of various numbers, and the REs included in the control channel component number of the control channel for removing the pilot overhead are implemented. The numbers are as balanced as possible, and the control channels of the various patterns are balanced to form the transmission performance of the members. 12 is a schematic structural diagram of an embodiment of a terminal provided by the present invention. As shown in FIG. 12, a physical resource to which an ePDCCH is mapped includes at least one control channel component member, and one physical resource block pair can be used to send at least two controls. The channel component member, the physical resource block pair is divided into at least two regions, the resource resource unit RE includes the at least two control channel component members, and the at least two control channel component members respectively have different control channel components. a member number, a control channel corresponding to at least one RE in at least one of the at least two regions, and a member number, and a control channel corresponding to the RE in at least one of the at least two regions Correspondence relationship

The terminal includes: a receiver 21 and a processor 22;

The receiver 21 is configured to, by using a control channel, a member of the control channel that is sent by the corresponding RE receiving base station in the physical resource block, and the corresponding RE of the control channel component member in the physical resource block is determined by the base station;

The processor 22 is configured to parse control information carried by the control channel component members. Optionally, the physical resource block pair is divided into at least two areas, including: each of the at least one physical resource block pair is divided into at least two areas.

Optionally, the REs on the at least one subcarrier included in any one of the at least two regions correspond to the at least two control channel component members; or The RE on at least one orthogonal frequency division multiplexing OFDM symbol included in any one of the at least two regions corresponds to at least two control channel constituent members.

The RE on at least one orthogonal frequency division multiplexing OFDM symbol included in any one of the at least two regions corresponds to at least two control channel constituent members, including: each positive region included in any one of the at least two regions The REs on the inter-frequency division multiplexed OFDM symbols correspond to at least two control channel constituent members.

Optionally, the physical resource block pair is divided into at least two areas, including: the physical resource block pair is divided into two time-frequency regions of the same size according to the time domain; or the physical resource block pair is divided into two by the same size according to the frequency domain. Or a time-frequency region; or, the physical resource block pair is divided into four time-frequency regions i or the same size according to the time domain and the frequency domain.

Optionally, the control channel corresponding to the at least one RE in the at least one of the at least two areas forms a member number, and the control channel corresponding to the RE in the at least one of the at least two areas forms a member number between the member numbers. Corresponding relationship includes: if two time-frequency regions of the same size are divided according to the frequency domain or four time-frequency regions of the same size according to the time domain and the frequency domain, the control corresponding to at least one RE in one time-frequency region The channel component member number has a first correspondence relationship with the control channel component number corresponding to the REs in the at least one time-frequency region; if the two time-frequency regions of the same size are divided according to the time domain or according to the time domain and The frequency domain is divided into four time-frequency regions of the same size, and the control channel corresponding to at least one RE in one time-frequency region constitutes a member number, and the control channel corresponding to the RE in the at least one time-frequency region exists between the member numbers. The second correspondence.

Optionally, if two time-frequency regions with the same size in the frequency domain are divided into four time-frequency regions with the same size according to the time domain and the frequency domain, the control channel corresponding to at least one RE in one time-frequency region is formed. a member number, a first correspondence relationship between the control channel component numbers corresponding to the REs in the at least one time-frequency region, including: if the two time-frequency regions i of the same size are divided according to the frequency domain, or i or sum frequency i or divided into four time-frequency regions i of the same size, or one A control channel corresponding to any RE in the time-frequency region constitutes a member number, and a first correspondence relationship is established according to the first rule between the control channel component number corresponding to the RE in another time-frequency region.

Optionally, the physical resource block pair includes f subcarriers, and f is an even number. If the two time-frequency regions of the same size are divided according to the frequency domain, the first rule includes: in a time-frequency region in the two time-frequency regions and The control channel group member number corresponding to the RE corresponding to the jth OFDM symbol on the i th subcarrier in the physical resource block pair, and the other time frequency region in the two time frequency regions and located in the physical resource block There is a first correspondence between the control channel component number corresponding to the RE corresponding to the jth OFDM symbol on the i+f/2 subcarriers; or, the physical resource block pair includes f subcarriers, and f is greater than or equal to 2 The first rule includes: if the two time-frequency regions are the same in the frequency domain, the first rule includes: the jth in the one time-frequency region in the two time-frequency regions and on the i-th subcarrier in the pair of physical resource blocks The control channel corresponding to the RE corresponding to the OFDM symbol constitutes the member number, and is located in the other time-frequency region of the two time-frequency regions and is located on the fi-subcarrier in the physical resource block. There is a first correspondence between the control channel constituent member numbers corresponding to the RE corresponding to the jth OFDM symbol.

Optionally, the control channel corresponding to any RE in one of the two time-frequency regions has a member number of k, and the control channel corresponding to one RE of the other time-frequency region has a member number of n, A corresponding relationship includes: k+n=N-1, where N is the number of members of the control channel that the physical resource block can send, and the value of k is an integer greater than or equal to 0 and less than or equal to N-1, n The value is greater than or equal to 0 and less than or equal to an integer of N-1; or, the control channel corresponding to any RE in one of the two time-frequency regions has a member number of k, and another time-frequency The control channel corresponding to one RE in the area is composed of member numbers n, and the first correspondence includes: n=M0D ( k+q, N ), where N is the number of members of the control channel that the physical resource block can send, MOD For the modulo operation, the value of k is an integer greater than or equal to 0 and less than or equal to N-1, and the value of n is an integer greater than or equal to 0 and less than or equal to N-1, and q is greater than or equal to 0 and An integer less than or equal to N-1; or, one of two time-frequency regions The control channel corresponding to any RE in the time-frequency region has the member number of k, and the control channel corresponding to one RE in the other time-frequency region has the member number n, and the first correspondence includes: If k is greater than P-1, Then n=T-1 -k; if k is less than or equal to P-1, then n=P-1 -k, where T is the number of subcarriers included in the pair of physical resource blocks, P=N/2, k The value is an integer greater than or equal to 0 and less than or equal to N-1, where n is an integer greater than or equal to 0 and less than or equal to N-1, and N is a control that the physical resource block pair can send. The number of members of the channel component, N is an even number.

Optionally, the physical resource block pair has g OFDM symbols on one subcarrier, and g is an even number. If two time-frequency regions of the same size are divided according to the time domain, the second rule includes: in two time-frequency regions. The control channel component number corresponding to the RE corresponding to the jth OFDM symbol on the i-th subcarrier in the physical resource block pair, and the other time-frequency region in the two time-frequency regions And the second channel corresponding to the control channel component number corresponding to the RE corresponding to the j+g/2 OFDM symbols on the i th subcarrier in the physical resource block; or the physical resource block pair in one subcarrier There are g OFDM symbols, and g is an even number. If two time-frequency regions of the same size are divided according to the time domain, the second rule includes: in one of the two time-frequency regions and in the physical resource block pair The control channel corresponding to the RE corresponding to the jth OFDM symbol on the i-th subcarrier constitutes a member number, and is located in another time-frequency region of the two time-frequency regions and is located in the physical resource block. There is a second correspondence between the control channel component number corresponding to the RE corresponding to the g-j OFDM symbols on the i-th subcarrier.

Optionally, the control channel corresponding to any RE in one of the two time-frequency regions has a member number of k, and the control channel corresponding to one RE in the other time-frequency region constitutes a member number n, and the second The correspondence is: k+n=N-1, where N is the number of members of the control channel that the physical resource block can send, and the value of k is an integer greater than or equal to 0 and less than or equal to N-1, n The value is greater than or equal to 0 and less than or equal to an integer of N-1; or, the control channel corresponding to any RE in one of the two time-frequency regions has a member number of k and another time-frequency region. The control channel corresponding to one RE is composed of member number n, and the second correspondence includes: n=M0D ( k+q, N ), where N is the number of members of the control channel included in the pair of physical resource blocks, and MOD is For the modulo operation, the value of k is an integer greater than or equal to 0 and less than or equal to N-1, and the value of n is an integer greater than or equal to 0 and less than or equal to N-1, and q is greater than or equal to 0 and An integer less than or equal to N-1; or, a control channel corresponding to any RE in one of the two time-frequency regions, having a member number of k, and a control channel corresponding to one RE in another time-frequency region The component number is n, and the second correspondence includes: if k is greater than P-1, then n=T-1 -k; if k is less than or equal to P-1, then n=P-1 -k, T is a physical resource The number of subcarriers included in a block pair, P=N/2, where N is the number of members of the control channel that the physical resource block can transmit, and N is an even number.

The terminal provided in this embodiment corresponds to the method for transmitting the enhanced physical downlink control channel (ePDCCH) provided by the embodiment of the present invention, and is an execution device of the method. For the process of executing the method, refer to the process shown in FIG. 3-9. Corresponding descriptions in the method embodiments are not described herein again.

The terminal provided by this embodiment, in the method for transmitting the enhanced physical downlink control channel ePDCCH provided in this embodiment, the PRB pair may be divided into at least two areas, and the REs included in the PRB pair respectively correspond to at least two control channels having different numbers. a component member, a control channel corresponding to any one of the at least two regions, and a control channel group member number, and a corresponding relationship between the control channel member numbers corresponding to the REs in the at least one region, so that the terminal receives The control channel consists of members of the control group that can uniformly include various numbers of control channel components. The control channel that removes the pilot overhead is composed of member numbers. The number of REs included in the member numbers is balanced as much as possible, and the control channel components of various patterns are balanced. Transmission performance.

It will be clearly understood by those skilled in the art that for the convenience and brevity of the description, only the division of each functional module described above is exemplified. In practical applications, the above function assignment can be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the system, the device and the unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form. The units described as separate components may or may not be physically separate, and the components displayed as the units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software function unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. The instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

The above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that The technical solutions described in the embodiments are modified, or some of the technical features are equivalently replaced; and the modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

Rights request

1. An enhanced physical downlink control channel ePDCCH sending method, characterized in that the physical resource to which an ePDCCH is mapped includes at least one control channel component, and a physical resource block pair can be used to send at least two control channel components. members, the physical resource block pair is divided into at least two areas, the resource units RE included in the physical resource block pair respectively correspond to at least two control channel component members, and the at least two control channel component members respectively have different The control channel component member number of the control channel component number corresponding to at least one RE in one of the at least two areas, and the control channel component number corresponding to the RE in at least one other area of the at least two areas There is a corresponding relationship between the member numbers;

The methods include:

The base station determines the RE corresponding to the control channel component member in the physical resource block;

The base station sends the control information carried by the control channel component member through the RE corresponding to the control channel component member in the physical resource block.

2. The method according to claim 1, characterized in that the physical resource block pair is divided into at least two areas i or, including:

Each of the at least one physical resource block pair is divided into at least two regions.

3. The method according to claim 1 or 2, characterized in that the member numbers of the two control channels having a one-to-one correspondence are different.

4. The method according to any one of claims 1 to 3, characterized in that,

The RE on at least one subcarrier included in any one of the at least two areas corresponds to at least two control channel components; or,

The RE on at least one orthogonal frequency division multiplexing OFDM symbol included in any one of the at least two areas corresponds to at least two control channel components.

5. The method according to claim 4, characterized in that the RE on at least one subcarrier included in any one of the at least two areas corresponds to at least two control channel components, including:

The RE on each subcarrier included in any one of the at least two areas corresponds to at least two control channel components; or,

At least one orthogonal frequency division multiplexing system contained in any one of the at least two areas REs on OFDM symbols correspond to at least two control channel components, including: REs on each orthogonal frequency division multiplexing OFDM symbol included in any one of the at least two areas correspond to at least two control channels Make up members.

6. The method according to any one of claims 1 to 5, characterized in that at least one RE among the two REs corresponding to the control channel component member numbers for which there is a corresponding relationship does not carry a demodulation reference signal. DMRS RE.

7. The method according to any one of claims 1 to 6, characterized in that the physical resource block pair is divided into at least two areas, including:

The physical resource block pair is divided into two time-frequency regions of the same size according to the time domain; or, the physical resource block pair is divided into two time-frequency regions of the same size according to the frequency domain; or, the physical resource block pair It is divided into four time-frequency regions of the same size according to the time domain and frequency domain.

8. The method according to claim 7, characterized in that, the control channel composition member number corresponding to at least one RE in one of the at least two areas is different from that of at least one other of the at least two areas. There is a one-to-one correspondence between the control channel member numbers corresponding to the REs in the area, including:

If two time-frequency regions of the same size are divided according to the frequency domain or divided into four time-frequency regions of the same size according to the time domain and frequency domain, the control channel composition member number corresponding to at least one RE in one time-frequency region is, There is a first correspondence between control channel component member numbers corresponding to REs in at least one other time-frequency region;

If there are two time-frequency regions of the same size divided according to the time domain or four time-frequency regions of the same size divided according to the time domain and frequency domain, the control channel composition member number corresponding to at least one RE in one time-frequency region, There is a second correspondence relationship between the control channel component member numbers corresponding to the REs in at least one other time-frequency region.

9. The method according to claim 8, characterized in that, if two time-frequency regions of the same size are divided according to the frequency domain or four time-frequency regions of the same size are divided according to the time domain and the frequency domain, a There is a first corresponding relationship between the control channel member number corresponding to at least one RE in the time-frequency region and the control channel member number corresponding to at least one other RE in the time-frequency region, including:

If two time-frequency regions of the same size are divided according to the frequency domain or four time-frequency regions of the same size are divided according to the time domain and frequency domain, the control channel group corresponding to any RE in a time-frequency region The first correspondence relationship is established according to the first rule between the control channel component number corresponding to the RE in another time-frequency region.

10. The method according to claim 9, wherein the physical resource block pair includes f subcarriers, and f is an even number. If two time-frequency regions of the same size are divided according to the frequency domain, the first A rule includes: the control channel component member number corresponding to the RE corresponding to the j-th OFDM symbol on the i-th subcarrier in the physical resource block pair in one of the two time-frequency regions, The control channel component member number corresponding to the RE corresponding to the jth OFDM symbol located in the other of the two time-frequency regions and located on the i+f/2th subcarrier in the physical resource block The first corresponding relationship exists between; or,

The physical resource block pair includes f subcarriers, and f is an integer greater than or equal to 2. If two time-frequency regions of the same size are divided according to the frequency domain, the first rule includes: The control channel component number corresponding to the RE corresponding to the j-th OFDM symbol in one time-frequency region and located on the i-th subcarrier in the physical resource block pair is the same as that in the two time-frequency regions. The first correspondence relationship exists between the control channel component numbers corresponding to the RE corresponding to the jth OFDM symbol in another time-frequency region and located on the f-ith subcarrier in the physical resource block.

11. The method according to claim 9 or 10, characterized in that,

The control channel member number corresponding to any RE in one of the two time-frequency regions is k, and the control channel member number corresponding to an RE in the other time-frequency region is n. The first A corresponding relationship includes: k+n=N-1, N is the number of control channel components that can be sent by the physical resource block pair, and the value of k is greater than or equal to 0 and less than or equal to N-1 is an integer, the value of n is an integer greater than or equal to 0 and less than or equal to N-1; or,

The control channel member number corresponding to any RE in one of the two time-frequency regions is k, and the control channel member number corresponding to an RE in the other time-frequency region is n. The first A corresponding relationship includes: n=MOD (k+q, N), N is the number of control channel members that can be sent by the physical resource block pair, MOD is a modulo operation, and the value of k is greater than or or, in The control channel member number corresponding to any RE in one of the two time-frequency regions is k, and the control channel member number corresponding to an RE in the other time-frequency region is k. n, the first corresponding relationship includes: if k is greater than P-1, then n=T-1-k; if k is less than or equal to P-1, then n=P-1-k, T is the physical resource The number of subcarriers included in the block pair, P=N/2, the value of k is an integer greater than or equal to 0 and less than or equal to N-1, the value of n is greater than or equal to 0 and less than or equal to N- is an integer of 1, N is the number of control channel components that can be sent by the physical resource block pair, and N is an even number.

12. The method according to claim 8, characterized in that, if two time-frequency regions of the same size are divided according to the time domain or four time-frequency regions of the same size are divided according to the time domain and the frequency domain, There is a second corresponding relationship between the control channel component number corresponding to at least one RE in one time-frequency region and the control channel component number corresponding to at least one other RE in the time-frequency region, including:

If two time-frequency regions of the same size are divided according to the time domain or divided into four time-frequency regions of the same size according to the time domain and frequency domain, the control channel composition member number corresponding to any RE in a time-frequency region, A second correspondence relationship is established according to the second rule between the control channel component member numbers corresponding to the RE in another time-frequency region.

13. The method according to claim 12, characterized in that, the physical resource block pair has g OFDM symbols on one subcarrier, and g is an even number. If two times of the same size are divided according to the time domain, In the frequency region, the second rule includes: the RE corresponding to the j-th OFDM symbol located in one of the two time-frequency regions and located on the i-th subcarrier in the physical resource block pair The control channel component member number of is the RE corresponding to the j+g/2th OFDM symbol located in the other time-frequency region of the two time-frequency regions and located on the i-th subcarrier in the physical resource block. The second correspondence relationship exists between corresponding control channel component member numbers; or,

The physical resource block pair has g OFDM symbols on one subcarrier, and g is an even number. If there are two time-frequency regions of the same size divided according to the time domain, the second rule includes: In the two time-frequency regions, The control channel component number corresponding to the RE corresponding to the j-th OFDM symbol in one time-frequency region and located on the i-th subcarrier in the physical resource block pair is the same as that in the two time-frequency regions. The second correspondence relationship exists between the control channel component numbers corresponding to the RE corresponding to the g-jth OFDM symbol located on the i-th subcarrier in the physical resource block in another time-frequency region in the region.

14. The method according to claim 12 or 13, characterized in that, in the two time frequencies The control channel member number corresponding to any RE in one time-frequency region is k, and the control channel member number corresponding to an RE in another time-frequency region is n. The second corresponding relationship is: k+n =N-1, N is the number of the control channel components that can be sent by the physical resource block pair, the value of k is an integer greater than or equal to 0 and less than or equal to N-1, the value of n is an integer greater than or equal to 0 and less than or equal to N-1; or,

The control channel member number corresponding to any RE in one of the two time-frequency regions is k, and the control channel member number corresponding to an RE in the other time-frequency region is n. The first The two corresponding relationships include: n=MOD (k+q, N), N is the number of the control channel components included in the physical resource block pair, MOD is a modulo operation, and the value of k is greater than or or,

The control channel member number corresponding to any RE in one of the two time-frequency regions is k, and the control channel member number corresponding to an RE in the other time-frequency region is n. The first The two corresponding relationships include: if k is greater than P-1, then n=T-1-k; if k is less than or equal to P-1, then n=P-1-k, and T is the number contained in the physical resource block pair. The number of subcarriers, P=N/2, N is the number of the control channel components that can be sent by the physical resource block pair, and N is an even number.

15. The method according to any one of claims 1 to 14, characterized in that the control channel components include a resource unit set corresponding to an enhanced channel control unit eCCE or an enhanced resource unit group eREG.

16. The method according to claim 15, characterized in that the base station determines the RE corresponding to the control channel component member in the physical resource block, including:

The base station determines the set of REs corresponding to one eCCE, and the one eCCE corresponds to any two eREGs; or,

The base station determines a set of REs corresponding to one eCCE, and one eCCE corresponds to any four eREGs.

17. An enhanced physical downlink control channel ePDCCH sending method, characterized in that the physical resource to which an ePDCCH is mapped includes at least one control channel component, and one physical resource block pair can be used to send at least two control channel components. members, the physical resource block pair is divided into at least two areas, the resource units RE included in the physical resource block pair respectively correspond to at least two control channel component members, and the at least two control channel component members respectively have different of The control channel member number, the control channel member number corresponding to at least one RE in one of the at least two areas, the control channel member number corresponding to the RE in at least one other area of the at least two areas There is a corresponding relationship between member numbers;

The methods include:

The terminal receives the control channel component sent by the base station through the RE corresponding to the control channel component in the physical resource block, and the RE corresponding to the control channel component in the physical resource block is determined by the base station;

The terminal analyzes the control information carried by the control channel component members.

18. The method according to claim 17, characterized in that the physical resource block pair is divided into at least two areas, including:

19. The method according to claim 17 or 18, characterized in that the member numbers of the two control channels that have a corresponding relationship are different.

20. The method according to any one of claims 17 to 19, characterized in that, the RE on at least one subcarrier included in any one of the at least two areas corresponds to at least two control channel components; or,

At least one orthogonal frequency division multiplexing system contained in any one of the at least two areas

REs on OFDM symbols correspond to at least two control channel components.

21. The method according to claim 20, wherein the RE on at least one subcarrier included in any one of the at least two areas corresponds to at least two control channel components, including:

The RE on the OFDM symbol corresponds to at least two control channel components, including:

The RE on each orthogonal frequency division multiplexing OFDM symbol included in any one of the at least two areas corresponds to at least two control channel components.

22. The method according to any one of claims 17 to 21, characterized in that at least one RE among the two REs corresponding to the control channel component member numbers that have a one-to-one correspondence is not RE that carries the demodulation reference signal DMRS.

23. The method according to any one of claims 17 to 22, characterized in that the physical resource block pair is divided into at least two areas, including:

24. The method according to claim 23, characterized in that, the control channel composition member number corresponding to at least one RE in one of the at least two areas is different from that of at least one other of the at least two areas. There is a correspondence relationship between the control channel member numbers corresponding to the REs in the area, including:

25. The method according to claim 24, characterized in that if two time-frequency regions of the same size are divided according to the frequency domain or four time-frequency regions of the same size are divided according to the time domain and the frequency domain, a There is a first corresponding relationship between the control channel member number corresponding to at least one RE in the time-frequency region and the control channel member number corresponding to at least one other RE in the time-frequency region, including:

If two time-frequency regions of the same size are divided according to the frequency domain or four time-frequency regions are divided into four time-frequency regions of the same size according to the time domain and frequency domain, the control channel composition member number corresponding to any RE in a time-frequency region, A first correspondence relationship is established according to a first rule between control channel component member numbers corresponding to REs in another time-frequency region.

26. The method according to claim 25, characterized in that: the physical resource block pair includes f subcarriers, and f is an even number. If two time-frequency regions of the same size are divided according to the frequency domain, the first A rule includes: within one of the two time-frequency regions and located in the physical The control channel component number corresponding to the RE corresponding to the j-th OFDM symbol on the i-th subcarrier in the resource block pair is the same as that in the other time-frequency region of the two time-frequency regions and located in the physical resource block The first corresponding relationship exists between the control channel component numbers corresponding to the RE corresponding to the j-th OFDM symbol on the i+f/2-th subcarrier; or,

27. The method according to claim 25 or 26, characterized in that the control channel component number corresponding to any RE in one of the two time-frequency regions is k, and the member number of the control channel in the other time-frequency region is k. The control channel member number corresponding to one RE in , the value of k is an integer greater than or equal to 0 and less than or equal to N-1, the value of n is an integer greater than or equal to 0 and less than or equal to N-1; or,

The control channel member number corresponding to any RE in one of the two time-frequency regions is k, and the control channel member number corresponding to an RE in the other time-frequency region is n. The first A corresponding relationship includes: n=MOD (k+q, N), N is the number of control channel members that can be sent by the physical resource block pair, MOD is a modulo operation, and the value of k is greater than or or, in The control channel member number corresponding to any RE in one of the two time-frequency regions is k, and the control channel member number corresponding to an RE in the other time-frequency region is n. The first The corresponding relationship includes: if k is greater than P-1, then n=T-1-k; if k is less than or equal to P-1, then n=P-1-k, and T is the sub-unit contained in the physical resource block pair. Number of carriers, P=N/2, the value of k is an integer greater than or equal to 0 and less than or equal to N-1, the value of n is an integer greater than or equal to 0 and less than or equal to N-1, N is The number of control channel components that can be sent by the physical resource block pair, N is an even number.

28. The method according to claim 27, characterized in that, if two time-frequency regions of the same size are divided according to the time domain or four time-frequency regions of the same size are divided according to the time domain and the frequency domain, There is a second corresponding relationship between the control channel component number corresponding to at least one RE in one time-frequency region and the control channel component number corresponding to at least one other RE in the time-frequency region, including:

29. The method according to claim 28, characterized in that: the physical resource block pair has g OFDM symbols on one subcarrier, and g is an even number. If two times of the same size are divided according to the time domain, In the frequency region, the second rule includes: the RE corresponding to the j-th OFDM symbol located in one of the two time-frequency regions and located on the i-th subcarrier in the physical resource block pair The control channel component member number of is the RE corresponding to the j+g/2th OFDM symbol located in the other time-frequency region of the two time-frequency regions and located on the i-th subcarrier in the physical resource block. The second correspondence relationship exists between corresponding control channel component member numbers; or,

30. The method according to claim 28 or 29, characterized in that, the control channel component number corresponding to any RE in one of the two time-frequency regions is k, and the member number of the control channel in the other time-frequency region is k. The control channel component number n corresponding to one RE in The value of k is an integer greater than or equal to 0 and less than or equal to N-1, and the value of n is an integer greater than or equal to 0 and less than or equal to N-1; or, The control channel member number corresponding to any RE in one of the two time-frequency regions is k, and the control channel member number corresponding to an RE in the other time-frequency region is n. The first The two corresponding relationships include: n=MOD (k+q, N), N is the number of the control channel components included in the physical resource block pair, MOD is a modulo operation, and the value of k is greater than or or,

31. The method according to any one of claims 17 to 30, characterized in that the control channel components include a resource unit set corresponding to an enhanced channel control unit eCCE or an enhanced resource unit group eREG.

32. A base station, characterized in that the physical resource to which an ePDCCH is mapped includes at least one control channel component, and one physical resource block pair can be used to transmit at least two control channel components, and the physical resource block pair is divided For at least two areas, the resource units RE included in the pair of physical resource blocks respectively correspond to at least two control channel components, and the at least two control channel components respectively have different control channel component numbers, and There is a correspondence between the control channel member number corresponding to at least one RE in one of the at least two areas and the control channel member number corresponding to the RE in at least one other area of the at least two areas. relation;

The base stations include:

The processor is configured to determine the RE corresponding to the control channel component member in the physical resource block; the transmitter, transmits the RE carried by the control channel component member through the RE corresponding to the control channel component member in the physical resource block. control information.

33. The base station according to claim 32, characterized in that the physical resource block pair is divided into at least two areas, including:

Each of the at least one pair of physical resource blocks is divided into at least two regions.

34. The base station according to claim 32 or 33, characterized in that the member numbers of the two control channels that have a corresponding relationship are different.

35. The base station according to any one of claims 32 to 34, wherein the RE on at least one subcarrier included in any one of the at least two areas corresponds to at least two control channel components; Or, the RE on at least one orthogonal frequency division multiplexing OFDM symbol included in any one of the at least two regions corresponds to at least two control channel components.

36. The base station according to claim 35, wherein the RE on at least one subcarrier included in any one of the at least two areas corresponds to at least two control channel components, including: the at least The RE on each subcarrier included in any one of the two areas corresponds to at least two control channel components; or,

The RE on at least one orthogonal frequency division multiplexing OFDM symbol included in any one of the at least two areas corresponds to at least two control channel components, including:

37. The base station according to any one of claims 32 to 36, characterized in that at least one RE among the two REs corresponding to the member numbers of the control channel having a one-to-one correspondence does not carry a demodulation reference signal. DMRS RE.

38. The base station according to any one of claims 32 to 37, characterized in that the physical resource block pair is divided into at least two areas, including: the physical resource block pair is divided into two areas of the same size according to the time domain. time-frequency regions; or, the physical resource block pair is divided into two time-frequency regions of the same size according to the frequency domain; or, the physical resource block pair is divided into four time-frequency regions of the same size according to the time domain and the frequency domain. District i or.

39. The base station according to claim 38, wherein the control channel component number corresponding to at least one RE in one of the at least two areas is different from that of at least one other of the at least two areas. There is a correspondence relationship between the control channel member numbers corresponding to the REs in the area, including:

If two time-frequency regions of the same size are divided according to the frequency domain or divided into four time-frequency regions of the same size according to the time domain and frequency domain, the control channel composition member number corresponding to at least one RE in one time-frequency region is, There is a first correspondence between control channel component member numbers corresponding to REs in at least one other time-frequency region; If there are two time-frequency regions of the same size divided according to the time domain or four time-frequency regions of the same size divided according to the time domain and frequency domain, the control channel composition member number corresponding to at least one RE in one time-frequency region, There is a second correspondence relationship between the control channel component member numbers corresponding to the REs in at least one other time-frequency region.

40. The base station according to claim 39, characterized in that, if two time-frequency regions of the same size are divided according to the frequency domain or four time-frequency regions of the same size are divided according to the time domain and the frequency domain, one There is a first corresponding relationship between the control channel member number corresponding to at least one RE in the time-frequency region and the control channel member number corresponding to at least one other RE in the time-frequency region, including:

41. The base station according to claim 40, wherein the physical resource block pair includes f subcarriers, and f is an even number. If two time-frequency regions of the same size are divided according to the frequency domain, the first A rule includes: the control channel component member number corresponding to the RE corresponding to the j-th OFDM symbol on the i-th subcarrier in the physical resource block pair in one of the two time-frequency regions, The control channel component member number corresponding to the RE corresponding to the jth OFDM symbol located in the other of the two time-frequency regions and located on the i+f/2th subcarrier in the physical resource block The first corresponding relationship exists between them; or, the physical resource block pair includes f subcarriers, and f is an integer greater than or equal to 2. If two time-frequency regions of the same size are divided according to the frequency domain, so The first rule includes: the control channel component member corresponding to the RE corresponding to the jth OFDM symbol on the i-th subcarrier in the pair of physical resource blocks in one of the two time-frequency regions. number, between the control channel component number corresponding to the RE corresponding to the jth OFDM symbol located in the other time-frequency region of the two time-frequency regions and located on the f-ith subcarrier in the physical resource block The first correspondence relationship exists.

42. The base station according to claim 40 or 41, characterized in that, the control channel component number corresponding to any RE in one of the two time-frequency regions is k, and the member number of the control channel in the other time-frequency region is k. The control channel component number corresponding to one RE in The number of , the value of k is an integer greater than or equal to 0 and less than or equal to N-1, the value of n is an integer greater than or equal to 0 and less than or equal to N-1; or, in the two cases The control channel member number corresponding to any RE in one time-frequency region is k, and the control channel member number corresponding to an RE in another time-frequency region is n. The first correspondence includes: n =MOD (k+q, N), N is the number of control channel members that can be sent by the physical resource block pair, MOD is the modulo operation, and the value of k is greater than or equal to 0 and less than or equal to An integer of N-1, n is an integer greater than or equal to 0 and less than or equal to N-1, q is an integer greater than or equal to 0 and less than or equal to N-1; or, at the two time frequencies The control channel member number corresponding to any RE in one time-frequency region is k, and the control channel member number corresponding to an RE in another time-frequency region is n. The first corresponding relationship includes: If k is greater than P-1, then n= T-1 -k; if k is less than or equal to P-1, then n=P-1 -k, T is the number of subcarriers included in the physical resource block pair, P= N/2, the value of k is an integer greater than or equal to 0 and less than or equal to N-1, the value of n is an integer greater than or equal to 0 and less than or equal to N-1, N is the physical resource block pair The number of control channel components that can be sent, N is an even number.

43. The base station according to claim 42, characterized in that, if two time-frequency regions of the same size are divided according to the time domain or four time-frequency regions of the same size are divided according to the time domain and the frequency domain, There is a second corresponding relationship between the control channel component number corresponding to at least one RE in a time-frequency region and the control channel component number corresponding to at least one other RE in the time-frequency region, including: If divided according to the time domain Two time-frequency regions of the same size or divided into four time-frequency regions of the same size according to the time domain and frequency domain, the control channel composition member number corresponding to any RE in one time-frequency region is the same as that in another time-frequency region A second correspondence relationship is established between the control channel component member numbers corresponding to the REs according to the second rule.

44. The base station according to claim 43, characterized in that, the physical resource block pair has g OFDM symbols on one subcarrier, and g is an even number. If two times of the same size are divided according to the time domain, In the frequency region, the second rule includes: the RE corresponding to the j-th OFDM symbol located in one of the two time-frequency regions and located on the i-th subcarrier in the physical resource block pair The control channel component member number of is the RE corresponding to the j+g/2th OFDM symbol located in the other time-frequency region of the two time-frequency regions and located on the i-th subcarrier in the physical resource block. The second correspondence relationship exists between corresponding control channel component member numbers; or, the physical resource block pair has g OFDM symbols on one subcarrier, and g is an even number, If there are two time-frequency regions of the same size divided according to the time domain, the second rule includes: the i-th subcarrier in one of the two time-frequency regions and located in the physical resource block pair The control channel component number corresponding to the RE corresponding to the jth OFDM symbol on is in the other of the two time-frequency regions and is located on the i-th subcarrier in the physical resource block. The second correspondence relationship exists between control channel component member numbers corresponding to REs corresponding to gj OFDM symbols.

45. The base station according to claim 43 or 44, characterized in that, the control channel component member number corresponding to any RE in one of the two time-frequency regions is k, and the member number of the control channel in the other time-frequency region is k. The control channel component number n corresponding to one RE in The value of k is an integer greater than or equal to 0 and less than or equal to N-1, and the value of n is an integer greater than or equal to 0 and less than or equal to N-1; or, in the two time-frequency regions The control channel member number corresponding to any RE in one time-frequency region is k, and the control channel member number corresponding to an RE in another time-frequency region is n. The second corresponding relationship includes: n=MOD ( k +q, N ), N is the number of the control channel components included in the physical resource block pair, MOD is the MOD operation, the value of k is greater than or equal to 0 and less than or equal to N-1 is an integer, n is an integer greater than or equal to 0 and less than or equal to N-1, q is an integer greater than or equal to 0 and less than or equal to N-1; or, in the two time-frequency regions The control channel member number corresponding to any RE in one time-frequency region is k, and the control channel member number corresponding to an RE in another time-frequency region is n. The second corresponding relationship includes: If k is greater than P- 1, then n= T-1 -k; if k is less than or equal to P-1, then n=P-1 -k, T is the number of subcarriers included in the physical resource block pair, P=N/2 , N is the number of the control channel components that can be sent by the physical resource block pair, and N is an even number.

46. The base station according to any one of claims 32 to 45, characterized in that the control channel components include a resource unit set corresponding to an enhanced channel control unit eCCE or an enhanced resource unit group eREG.

47. The base station according to claim 46, wherein the processor is specifically configured to: determine a set of REs corresponding to one eCCE, and the one eCCE corresponds to any two eREGs; or, the base station determines one eCCE. The corresponding set of REs, one eCCE corresponds to any four eREGs.

48. A terminal, characterized in that the physical resource to which an ePDCCH is mapped includes at least one control channel component, and one physical resource block pair can be used to transmit at least two control channel components, and the physical resource block pair is divided For at least two areas, the resource units RE included in the pair of physical resource blocks respectively correspond to at least two control channel components, and the at least two control channel components respectively have different control channel component numbers, and There is a correspondence between the control channel member number corresponding to at least one RE in one of the at least two areas and the control channel member number corresponding to the RE in at least one other area of the at least two areas. relation;

The terminal includes:

The receiver is configured to receive the control channel component sent by the base station through the RE corresponding to the control channel component in the physical resource block, and the RE corresponding to the control channel component in the physical resource block is provided by the Base station determined;

A processor, configured to parse the control information carried by the control channel component members.

49. The terminal according to claim 48, wherein the physical resource block pair is divided into at least two areas, including: each physical resource block pair in at least one of the physical resource block pairs is divided into at least two areas. area.

50. The terminal according to claim 48 or 49, characterized in that the member numbers of the two control channels that have a corresponding relationship are different.

51. The terminal according to any one of claims 48 to 50, wherein the RE on at least one subcarrier included in any one of the at least two areas corresponds to at least two control channel components; or,

52. The terminal according to claim 51, wherein the RE on at least one subcarrier included in any one of the at least two areas corresponds to at least two control channel components, including: the at least The RE on each subcarrier included in any one of the two areas corresponds to at least two control channel components; or,

The RE on at least one orthogonal frequency division multiplexing OFDM symbol included in any one of the at least two areas corresponds to at least two control channel components, including: The RE on each orthogonal frequency division multiplexing OFDM symbol corresponds to It is composed of at least two control channels.

53. The terminal according to any one of claims 48 to 52, characterized in that at least one RE among the two REs corresponding to the control channel component member numbers with a one-to-one correspondence does not carry a demodulation reference signal. DMRS RE.

54. The terminal according to any one of claims 48 to 53, characterized in that the physical resource block pair is divided into at least two areas, including: the physical resource block pair is divided into two areas of the same size according to the time domain. time-frequency regions; or, the physical resource block pair is divided into two time-frequency regions of the same size according to the frequency domain; or, the physical resource block pair is divided into four time-frequency regions of the same size according to the time domain and the frequency domain. District i or.

55. The terminal according to claim 54, characterized in that, the control channel composition member number corresponding to at least one RE in one of the at least two areas is different from that of at least one other of the at least two areas. There is a correspondence relationship between the control channel member numbers corresponding to the REs in the area, including: If two time-frequency areas of the same size are divided according to the frequency domain or divided into four time-frequency areas of the same size according to the time domain and frequency domain. In the frequency region, there is a first correspondence between the control channel member number corresponding to at least one RE in a time-frequency region and the control channel member number corresponding to at least one other RE in the time-frequency region; If divided according to the time domain Two time-frequency regions of the same size or divided into four time-frequency regions of the same size according to the time domain and frequency domain, the control channel component number corresponding to at least one RE in one time-frequency region is the same as that of at least one other time-frequency region. There is a second correspondence relationship between the control channel component member numbers corresponding to the REs in the frequency region.

56. The terminal according to claim 55, characterized in that, if two time-frequency regions of the same size are divided according to the frequency domain or four time-frequency regions of the same size are divided according to the time domain and the frequency domain, one There is a first correspondence between the control channel member number corresponding to at least one RE in the time-frequency region and the control channel member number corresponding to at least one other RE in the time-frequency region, including: If divided according to the size of the frequency domain The same two time-frequency regions or are divided into four time-frequency regions of the same size according to the time domain and frequency domain. The control channel component number corresponding to any RE in one time-frequency region is the same as that in another time-frequency region. A first correspondence relationship is established between the control channel component member numbers corresponding to the RE according to the first rule.

57. The terminal according to claim 56, wherein the physical resource block pair includes f subcarriers, and f is an even number. If two time-frequency regions of the same size are divided according to the frequency domain, the first A rule includes: within one of the two time-frequency regions and located in the physical The control channel component number corresponding to the RE corresponding to the j-th OFDM symbol on the i-th subcarrier in the resource block pair is the same as that in the other time-frequency region of the two time-frequency regions and located in the physical resource block The first corresponding relationship exists between the control channel component numbers corresponding to the RE corresponding to the jth OFDM symbol on the i+f/2th subcarrier; or, the physical resource block pair includes f subcarriers, The f is an integer greater than or equal to 2. If there are two time-frequency regions of the same size divided according to the frequency domain, the first rule includes: within one of the two time-frequency regions and located in the The control channel component number corresponding to the RE corresponding to the j-th OFDM symbol on the i-th subcarrier in the pair of physical resource blocks is the same as that in the other time-frequency region of the two time-frequency regions and located in the physical resource block pair. The first correspondence relationship exists between the control channel component numbers corresponding to the RE corresponding to the j-th OFDM symbol on the fi-th subcarrier in the resource block.

58. The terminal according to claim 56 or 57, wherein the control channel component member number corresponding to any RE in one of the two time-frequency regions is k, and the member number of the control channel in the other time-frequency region is k. The control channel member number corresponding to one RE in , the value of k is an integer greater than or equal to 0 and less than or equal to N-1, the value of n is an integer greater than or equal to 0 and less than or equal to N-1; or, in the two time-frequency regions The control channel member number corresponding to any RE in one time-frequency region is k, and the control channel member number corresponding to an RE in another time-frequency region is n. The first corresponding relationship includes: n=MOD ( k+q, N ), N is the number of control channel members that can be sent by the physical resource block pair, MOD is the modulo operation, and the value of k is greater than or equal to 0 and less than or equal to N-1 is an integer, n is an integer greater than or equal to 0 and less than or equal to N-1, q is an integer greater than or equal to 0 and less than or equal to N-1; or, in the two time-frequency regions The control channel member number corresponding to any RE in one time-frequency region is k, and the control channel member number corresponding to an RE in another time-frequency region is n. The first corresponding relationship includes: If k is greater than P- 1, then n= T-1 -k; if k is less than or equal to P-1, then n=P-1 -k, T is the number of subcarriers included in the physical resource block pair, P=N/2 , the value of k is an integer greater than or equal to 0 and less than or equal to N-1, the value of n is an integer greater than or equal to 0 and less than or equal to N-1, N is the number of times the physical resource block pair can be sent The number of members of the control channel, N is an even number.

59. The terminal according to claim 58, characterized in that, if the time domain is divided into two time-frequency regions of the same size, or when the time domain and the frequency domain are divided into four time-frequency regions of the same size, In the frequency region, there is a second correspondence between the control channel member number corresponding to at least one RE in a time-frequency region and the control channel member number corresponding to at least one other RE in the time-frequency region, including: If according to the time-frequency region Two time-frequency regions of the same size are divided into two time-frequency regions or divided into four time-frequency regions of the same size according to the time domain and frequency domain. The control channel component number corresponding to any RE in one time-frequency region is the same as that of another time-frequency region. A second correspondence relationship is established between the control channel component member numbers corresponding to the REs in the frequency region according to the second rule.

60. The terminal according to claim 59, characterized in that, the physical resource block pair has g OFDM symbols on one subcarrier, and the g is an even number. If two times of the same size are divided according to the time domain, In the frequency region, the second rule includes: the RE corresponding to the j-th OFDM symbol located in one of the two time-frequency regions and located on the i-th subcarrier in the physical resource block pair The control channel component member number of is the RE corresponding to the j+g/2th OFDM symbol located in the other time-frequency region of the two time-frequency regions and located on the i-th subcarrier in the physical resource block. The second corresponding relationship exists between corresponding control channel component member numbers; or, the physical resource block pair has g OFDM symbols on one subcarrier, and g is an even number. If the sizes divided according to the time domain are the same In the two time-frequency regions of , the second rule includes: the j-th OFDM symbol in one of the two time-frequency regions and located on the i-th subcarrier in the physical resource block pair corresponds to The control channel component number corresponding to the RE corresponds to the RE corresponding to the g-jth OFDM symbol located in the other time-frequency region of the two time-frequency regions and located on the i-th subcarrier in the physical resource block. The second correspondence relationship exists between corresponding control channel component member numbers.

61. The terminal according to claim 59 or 60, characterized in that, the control channel component number corresponding to any RE in one of the two time-frequency regions is k, and the member number of the control channel in the other time-frequency region is k. The control channel component number n corresponding to one RE in The value of k is an integer greater than or equal to 0 and less than or equal to N-1, and the value of n is an integer greater than or equal to 0 and less than or equal to N-1; or, in the two time-frequency regions The control channel member number corresponding to any RE in one time-frequency region is k, and the control channel member number corresponding to an RE in another time-frequency region is n. The second corresponding relationship includes: n=MOD ( k +q, N ), N is the number of the control channel components included in the physical resource block pair, MOD is the modulo operation, and the value of k is greater than or equal to 0 and less than or equal to N-1 Integer, n is an integer greater than or equal to 0 and less than or equal to N-1, q is an integer greater than or equal to 0 and less than or equal to N-1; or, in one of the two time-frequency regions The control channel member number corresponding to any RE in the time-frequency region is k, and the control channel member number corresponding to an RE in another time-frequency region is n. The second corresponding relationship includes: If k is greater than P-1 , then n= T-1 -k; if k is less than or equal to P-1, then n=P-1 -k, T is the number of subcarriers included in the physical resource block pair, P=N/2, N is the number of the control channel components that can be sent by the physical resource block pair, and N is an even number.

62. The terminal according to any one of claims 48 to 61, characterized in that the control channel components include a resource unit set corresponding to an enhanced channel control unit eCCE or an enhanced resource unit group eREG.