WO2014019144A1

WO2014019144A1 - Transmission method for control channel, base station, and terminal

Info

Publication number: WO2014019144A1
Application number: PCT/CN2012/079441
Authority: WO
Inventors: 刘建琴; 刘江华; 吴强
Original assignee: 华为技术有限公司
Priority date: 2012-07-31
Filing date: 2012-07-31
Publication date: 2014-02-06
Also published as: CN104137463A; CN104137463B

Abstract

Provided are a transmission method for a control channel, a base station, and a terminal. The embodiments of the present application can achieve the sending or receiving of some control information borne by a control channel such as an ePDCCH in a physical resource block pair, by means of a resource element set or an eREG corresponding to a resource element group such as an eCCE.

Description

Control channel transmission method and base station, terminal

TECHNICAL FIELD The present application relates to communication technologies, and in particular, to a control channel transmission method, a base station, and a terminal. Background technique

In a wireless communication system, such as a Long Term Evolution (LTE) system or an advanced Long Term Evolution Advanced (LTE-A) system, a physical downlink control channel (Physical Downlink Control Channel) based on precoding is introduced. (PDCCH), that is, an Enhanced Physical Downlink Control Channel (ePDCCH). The ePDCCH may be demodulated based on a User Equipment (UE) specific reference signal, that is, a Demodulation Reference Signal (DMRS). The ePDCCH and the Physical Downlink Shared Channel (PDSCH) are frequency-divided. The base station may send the ePDCCH on a physical resource block (PRB) with better channel conditions according to the channel state reported by the terminal. Wherein, in one subframe, the physical resource blocks of two time slots may be referred to as a physical resource block pair (PRB pair).

However, in the prior art, how to send a resource set or an enhanced resource element group (eREG) corresponding to an enhanced control channel element (eCCE) in a physical resource block pair is not given. Or a method of receiving control information such as control information carried by the ePDCCH. Summary of the invention

Aspects of the present application provide a control channel transmission method, and a base station and a terminal, which are configured to implement an Enhanced Control Channel Element (eCCE) or an enhanced resource element group (Enhanced Resource Element Group) in a physical resource block pair. , eREG) transmits control information of some control channels such as ePDCCH bearers.

An aspect of the present application provides a control channel transmission method, including:

Determining at least one physical resource block pair for transmitting a control channel, the physical resource block pair And a first number of the first resource unit groups, where the physical resource block pair includes N the OFDM symbols, and each of the N OFDM symbols corresponds to one from the first resource unit a mapping rule to a resource unit in the pair of physical resource blocks, where N is an integer greater than or equal to 1;

Determining, according to an aggregation level of the control channel, a first resource element group in a physical resource block pair to which the control channel is mapped;

Mapping the control channel to the resource unit corresponding to the determined first resource unit group according to the mapping rule;

And transmitting, on the first resource element group of the mapping, control information carried by the control channel. The foregoing aspect and any possible implementation manner further provide an implementation manner, where the N mapping rules corresponding to the N OFDM symbols include at least two different rules.

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, the resource of the first resource unit group corresponding to the resource unit corresponding to the first available subcarrier in each OFDM symbol The unit group number is different.

The foregoing aspect and any possible implementation manner further provide an implementation manner, where the first resource unit group includes a resource unit set or an eREG corresponding to the eCCE.

The foregoing aspect and any possible implementation manner further provide an implementation manner, where the first resource unit group includes at least one resource unit of the physical resource block pair; or f ' surgery t , , f - At least one of the resource elements other than the resource element of the home code and/or other control channel mapping.

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, where the method further includes: numbering a resource element set corresponding to an eCCE included in the first resource unit group; The rule includes a first mapping rule, where the first mapping rule includes: the resource element set numbers corresponding to the eCCEs corresponding to the resource units corresponding to the subcarriers sequentially numbered in the same OFDM symbol are sequentially arranged and cyclically arranged.

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, where the method further includes: numbering an eREG included in the first resource unit group; the mapping rule includes a first mapping rule The first mapping rule includes: The eREG numbers corresponding to the resource elements corresponding to the subcarriers sequentially arranged in the same OFDM symbol are sequentially arranged and arranged in a loop.

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, where the method further includes: numbering a resource element set corresponding to an eCCE included in the first resource unit group; The rule includes a first mapping rule, where the first mapping rule includes: the resource element set corresponding to the eCCE with the same resource element set number in the first resource unit group corresponds to two consecutive resources in the frequency domain in the same OFDM symbol a unit, and the resource unit set numbers corresponding to the eCCEs corresponding to the resource units corresponding to the subcarriers in which the odd subcarrier numbers are sequentially arranged in the same OFDM symbol are sequentially arranged and cyclically arranged; and/or

The resource element set corresponding to the eCCE with the same resource element set number in the first resource unit group corresponds to two consecutive resource units in the frequency domain in the same OFDM symbol, and the even subcarrier numbers are sequentially arranged in the same OFDM symbol. The resource unit set numbers corresponding to the eCCEs corresponding to the resource units corresponding to the subcarriers are sequentially arranged and arranged in a loop.

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, where the method further includes: numbering an eREG included in the first resource unit group; the mapping rule includes a first mapping rule The first mapping rule includes:

The eREGs with the same eREG number in the first resource unit group correspond to two consecutive resource units in the frequency domain in the same OFDM symbol, and corresponding to the resource units corresponding to the subcarriers in which the odd subcarrier numbers are sequentially arranged in the same OFDM symbol The eREG numbers are arranged in sequence and arranged in a loop; and/or

The eREGs with the same eREG number in the first resource unit group correspond to two consecutive resource units in the frequency domain in the same OFDM symbol, and the resource units corresponding to the subcarriers in which the even subcarrier numbers are sequentially arranged in the same OFDM symbol correspond to The eREG numbers are arranged in order and arranged in a loop.

The foregoing aspect and any possible implementation manner further provide an implementation manner, where the resource unit set number or the eREG number corresponding to the eCCE is arranged in a small to large cycle or in a large to small cycle.

The foregoing aspect and any possible implementation manner further provide an implementation manner, where the cyclic arrangement includes:

If the resource unit set number corresponding to the eCCE or the eREG number has been ranked the most If the resource element set number corresponding to the eCCE or the eREG number is in a small to large loop; or

If the resource unit set number or the eREG number corresponding to the corresponding eCCE has been minimized, the resource unit set number or the eREG number corresponding to the eCCE is arranged in a large to small cycle.

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, where the mapping rule further includes a second mapping rule,

The order of the resource unit sets corresponding to the eCCEs corresponding to the resource units corresponding to the sub-carriers in the same OFDM symbol in the same OFDM symbol is sequentially numbered by the same OFDM symbol in the first mapping rule. The arrangement order of the resource unit sets corresponding to the eCCE corresponding to the resource unit corresponding to the aligned subcarriers is cyclically shifted; or

The arrangement order of the eREG numbers corresponding to the resource elements corresponding to the sub-carriers sequentially arranged in the same OFDM symbol in the second mapping rule is the sub-carriers sequentially numbered in the same OFDM symbol in the first mapping rule. The arrangement order of the eREG numbers corresponding to the corresponding resource units is cyclically shifted.

Another aspect of the present application provides a control channel transmission method, including:

Determining at least one physical resource block pair for transmitting a control channel, the physical resource block pair corresponding to a first number of first resource unit groups, where the physical resource block pair includes N OFDM symbols, the N Each of the OFDM symbols in the OFDM symbol corresponds to a mapping rule from the first resource unit group to a resource unit in the physical resource block pair, where the N is an integer greater than or equal to 1;

Determining, according to the candidate aggregation level Lk of the control channel, a first resource unit group in a physical resource block pair to which the control channel is mapped; wherein k is an integer, and Lk is any one of k candidate aggregation levels;

Determining, by the mapping rule, a resource unit corresponding to the first resource unit group; detecting, by the resource unit corresponding to the first resource unit group, parsing the Control channel control information.

The foregoing aspect and any possible implementation manner further provide an implementation manner, where the N mapping rules corresponding to the N OFDM symbols include at least two different rules.

An aspect as described above and any possible implementation manner further provide an implementation manner, The resource element group number of the first resource unit group corresponding to the resource unit corresponding to the first available subcarrier in each OFDM symbol is different.

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, where the first resource unit group includes at least one resource unit of the physical resource block pair; or - surgery, _$ , , At least one of the resource elements other than the resource unit mapped by the number and/or other control channel.

The eREG numbers corresponding to the resource elements corresponding to the subcarriers sequentially arranged in the same OFDM symbol are sequentially arranged and arranged in a loop.

The resource element set corresponding to the eCCE with the same resource element set number in the first resource unit group corresponds to two consecutive resource units in the frequency domain in the same OFDM symbol, and the even subcarrier numbers are sequentially arranged in the same OFDM symbol. The corresponding sub-carrier corresponding to the resource unit The resource unit set numbers corresponding to the eCCE are sequentially arranged and arranged in a loop.

The eREGs with the same eREG number in the first resource unit group correspond to two consecutive resource units in the frequency domain in the same OFDM symbol, and corresponding to the resource units corresponding to the subcarriers in which the odd subcarrier numbers are sequentially arranged in the same OFDM symbol The eREG numbers are arranged in sequence and cycled ¹ J ; and / or

The foregoing aspect and any possible implementation manner further provide an implementation manner, where the resource unit set number or the eREG number corresponding to the eCCE is arranged in a small to large loop or in a large to small loop.

If the resource unit set number or the eREG number corresponding to the eCCE has been maximized, the resource unit set number or the eREG number corresponding to the eCCE is arranged in a small to large loop; or

If the resource unit set number or the eREG number corresponding to the eCCE has been minimized, the resource unit set number or the eREG number corresponding to the eCCE is arranged in a large to small loop.

A resource corresponding to the subcarriers sequentially numbered in the same OFDM symbol in the second mapping rule The order of the eREG numbers corresponding to the source units is obtained by cyclically shifting the order of the eREG numbers corresponding to the resource units corresponding to the subcarriers sequentially numbered in the same OFDM symbol in the first mapping rule.

Determining at least one physical resource block pair for transmitting a control channel, the physical resource block pair corresponding to a first number of first resource unit groups, the physical resource block pair comprising N the OFDM symbols, according to S mapping rules Mapping the first resource unit group to the resource unit in the physical resource block pair, where the N is an integer greater than or equal to 1, and the S is a positive integer smaller than the N;

And transmitting, on the first resource element group of the mapping, control information carried by the control channel. The foregoing aspect and any possible implementation manner further provide an implementation manner, where the first resource unit group includes a resource unit set or an eREG corresponding to the eCCE.

The foregoing aspect and any possible implementation manner further provide an implementation manner, where the mapping the first resource unit group to the resource unit in the physical resource block pair according to the S mapping rules includes:

The first resource unit group is respectively mapped to the resource unit in the physical resource block pair according to one of the S mapping rules.

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, where the method further includes: numbering the S mapping rules; respectively, respectively, according to one of the S mapping rules Mapping rules, respectively mapping the first resource unit group to the physical On the resource unit in the resource block pair, including:

Determining, in the same OFDM symbol, in the order of the subcarrier numbers of the subcarriers and in the order of the symbol numbers of the OFDM symbols, according to the order of the rule numbers of the S mapping rules, respectively. One of the S mapping rules maps the first resource unit group to the resource unit in the physical resource block pair.

The foregoing aspect and any possible implementation manner further provide an implementation manner, where the order of the rule numbers of the S mapping rules includes:

The rule numbers of the S mapping rules are arranged from small to large; or

The rule numbers of the S mapping rules are arranged in order from large to small.

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, where the mapping rule includes at least one of the following rules:

The resource units corresponding to the subcarriers numbered from small to large in the same OFDM symbol respectively correspond to the first resource unit group whose number is from small to large;

The resource elements corresponding to the subcarriers numbered from small to large in the same OFDM symbol respectively correspond to the first resource element group whose number is large to small.

An aspect as described above and any possible implementation manner further provide an implementation manner, The first resource unit group includes at least one resource unit of the physical resource block pair; or at least - other than resource elements other than resource elements mapped by operation, _$ , , , , and/or other control channels A resource unit.

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, where the method further includes: numbering the S mapping rules; respectively, respectively, according to one of the S mapping rules a mapping rule, respectively, mapping the first resource unit group to the resource unit in the physical resource block pair, including:

In the same OFDM symbol, in the order of subcarrier numbers of subcarriers and in accordance with

In the order of the symbol numbers of the OFDM symbols, the first resource unit group is sequentially grouped according to one of the S mapping rules in the order of the rule numbers of the S mapping rules. Mapping to resource units in the pair of physical resource blocks, respectively.

The rule numbers of the S mapping rules are arranged from small to large; or

In another aspect of the present application, a base station is provided, including:

a determining unit, configured to determine at least one physical resource block pair for transmitting a control channel, and Determining, according to the aggregation level of the control channel, a first resource unit group in a physical resource block pair to which the control channel is mapped, where the physical resource block pair corresponds to a first number of first resource unit groups, and the physical resource The block pair includes N of the OFDM symbols, and each of the N OFDM symbols corresponds to a mapping rule from the first resource unit group to a resource unit in the physical resource block pair Wherein N is an integer greater than or equal to 1;

a mapping unit, configured to map the control channel to a resource unit corresponding to the first resource unit group determined by the determining unit according to the mapping rule;

And a sending unit, configured to send, on the first resource element group mapped by the mapping unit, control information carried by the control channel.

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, where the first resource unit group includes at least one resource unit of the physical resource block pair; or - surgery, _$ , , , , At least one of the resource elements other than the resource elements mapped by the , , and/or other control channels.

If the resource unit set number or the eREG number corresponding to the eCCE has been minimized, the resource unit set number or the eREG number corresponding to the eCCE is arranged in a cycle from large to small.

In another aspect of the present application, a terminal is provided, including:

a determining unit, configured to determine at least one physical resource block pair for transmitting a control channel, where the physical resource block pair corresponds to a first number of first resource element groups, where the physical resource block pair includes N the OFDM symbols, Each of the N OFDM symbols corresponds to a mapping rule from the first resource unit group to a resource unit in the physical resource block pair, where the N is greater than or An integer equal to 1;

a receiving unit, configured to determine, according to the candidate aggregation level Lk of the control channel, a first resource unit group in a physical resource block pair determined by the determining unit to which the control channel is mapped, and determine, according to the mapping rule, The resource unit corresponding to the first resource unit group, and the resource unit corresponding to the first resource unit group are detected, and the control information carried by the control channel is parsed from the correctly detected first resource unit group; Where k is an integer and L _k k candidate aggregation levels.

The foregoing aspect and any possible implementation manner further provide an implementation manner, if the resource unit set number or the eREG number corresponding to the eCCE has been maximized, the resource unit set number corresponding to the eCCE Or the eREG numbers are arranged in a small to large loop; or

The arrangement order of the eREG numbers corresponding to the resource elements corresponding to the subcarriers sequentially arranged in the same OFDM symbol in the second mapping rule is the same OFDM in the first mapping rule. The arrangement order of the eREG numbers corresponding to the resource elements corresponding to the subcarriers sequentially arranged in the symbol is cyclically shifted.

a determining unit, configured to determine at least one physical resource block pair for transmitting a control channel, and determining, according to an aggregation level of the control channel, a first resource unit group in a physical resource block pair to which the control channel is mapped, The physical resource block pair corresponds to a first number of first resource unit groups, the physical resource block pair includes N the OFDM symbols, and the first resource unit group is mapped to the physical resource block according to S mapping rules. On the resource unit of the pair, where N is an integer greater than or equal to 1, and S is a positive integer smaller than the N;

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, where the first resource unit group includes at least one resource unit of the physical resource block pair; or i _† ' surgery it , , At least one of the resource elements other than the resource elements mapped by , , , and/or other control channels.

The foregoing aspect, and any possible implementation manner, further provide an implementation manner, the base station further includes: numbering the S mapping rules; respectively, respectively, according to one of the S mapping rules a mapping rule, respectively, mapping the first resource unit group to the resource unit in the physical resource block pair, including: Determining, in the same OFDM symbol, in the order of the subcarrier numbers of the subcarriers and in the order of the symbol numbers of the OFDM symbols, according to the order of the rule numbers of the S mapping rules, respectively. One of the S mapping rules maps the first resource unit group to the resource unit in the physical resource block pair.

The rule numbers of the S mapping rules are arranged from small to large; or

a determining unit, configured to determine at least one physical resource block pair for transmitting a control channel, where the physical resource block pair corresponds to a first number of first resource element groups, where the physical resource block pair includes N the OFDM symbols, Mapping the first resource unit group to the resource unit in the physical resource block pair according to the S mapping rules, where the N is an integer greater than or equal to 1, and the S is smaller than the positive of the N Integer

a receiving unit, configured to determine, according to the candidate aggregation level Lk of the control channel, a first resource unit group in a physical resource block pair determined by the determining unit to which the control channel is mapped, and determine, according to the mapping rule, The resource unit corresponding to the first resource unit group, and the resource unit corresponding to the first resource unit group are detected, and the control information carried by the control channel is parsed from the correctly detected first resource unit group; Where k is an integer and Lk is any one of k candidate aggregation levels.

An aspect as described above, and any possible implementation manner, further providing an implementation manner, where the first resource unit group includes at least one resource unit of the physical resource block pair; or At least one of the resource elements other than the resource elements mapped by the control, _$ , , , , and/or other control channels.

The rule numbers of the S mapping rules are arranged from small to large; or

According to the foregoing technical solution, the embodiment of the present application can implement, in a physical resource block pair, transmit or receive some control information, such as ePDCCH bearer control information, by a resource unit group, such as a resource unit set or an eREG corresponding to an eCCE. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. The drawings are some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without any inventive labor.

1 is a schematic flowchart of a method for transmitting a control channel according to an embodiment of the present disclosure; and FIG. 2 to FIG. 10 are schematic diagrams showing positions of a first resource element group of a control channel mapping in a physical resource block pair in the embodiment corresponding to FIG.

FIG. 11 is a schematic flowchart of a method for transmitting a control channel according to another embodiment of the present disclosure; FIG. 12 is a schematic flowchart of a method for transmitting a control channel according to another embodiment of the present disclosure; and FIGS. 13-15 are embodiments corresponding to FIG. A schematic diagram of a location of a first resource element group of a medium control channel map in a pair of physical resource blocks;

FIG. 16 is a schematic flowchart of a control channel transmission method according to another embodiment of the present disclosure; FIG. 17 is a schematic structural diagram of a base station according to another embodiment of the present application;

FIG. 18 is a schematic structural diagram of a terminal according to another embodiment of the present application;

FIG. 19 is a schematic structural diagram of a base station according to another embodiment of the present application;

FIG. 20 is a schematic structural diagram of a terminal according to another embodiment of the present application. The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. The embodiments are part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present invention.

The technical solution of the present invention can be applied to a wireless communication system such as an LTE system or an LTE-A system. The terminal may be an LTE system or a user equipment (UE) in the LTE-A system; the base station may be an eNB in an LTE system or an LTE-A system.

In addition, the term "and / or" in this article is merely an association describing the associated object, indicating There may be three relationships, for example, A and/or B, which may indicate: A exists separately, A and B exist simultaneously, and B exists separately. In addition, the character '7' in this article generally means that the contextual object is an "or" relationship.

In a wireless communication system such as a Long Term Evolution (LTE) system or an advanced Long Term Evolution Advanced (LTE-A) system, the downlink multiple access method usually uses orthogonal frequency division multiplexing multiple access. Orthogonal Frequency Division Multiple Access (OFDMA) method. The downlink resources of the system are divided into Orthogonal Frequency Division Multiple (OFDM) symbols in terms of time, and are divided into subcarriers in terms of frequency.

According to the LTE Release 8/9/10 standard released by LTE, a normal downlink subframe contains two slots, each slot has 7 or 6 OFDM symbols, one A normal downlink subframe contains a total of 14 OFDM symbols or 12 OFDM symbols. The LTE Release 8/9/10 standard also defines the size of a Resource Block (RB). One resource block contains 12 subcarriers in the frequency domain and half a subframe duration (ie, one time slot) in the time domain. That is, it contains 7 or 6 OFDM symbols. On one subframe, a pair of resource blocks of two slots are referred to as resource block pairs (RB pairs, RB pairs). In the actual transmission, the resource block pair used by the physical resource is also called a physical resource block pair (Physical RB pair, PRB pair), and may also be referred to as a unit physical resource block. Therefore, the subsequent descriptions refer to PRB pairs, whether they are PRB, PRB pair or physical resource block or physical resource block pair.

The various data carried on the subframe are organized by mapping various physical channels on the physical time-frequency resources of the subframe. The various physical channels can be roughly divided into two categories: control channels and traffic channels. Correspondingly, the data carried by the control channel may be referred to as control data (generally referred to as control information), and the data carried by the traffic channel may be referred to as traffic data (generally referred to as data). The fundamental purpose of transmitting a subframe is to transmit service data, and the role of the control channel is to assist in the transmission of service data.

In the LTE system, a complete physical downlink control channel (Physical Downlink)

Control Channel, PDCCH) can be mapped to one or several Control Channel Elements (CCEs). According to LTE Release 8/9/10, one PDCCH can be mapped to 1, 2, 4 or 8 CCEs, that is, composed of 1, 2, 4 or 8 CCEs, corresponding to aggregation levels 1, 2, 4, 8.

Multi-user Multiple Input Multiple Output (MIMO) and Association The introduction of technologies such as Coordinated Multiple Points (CoMP) introduces a Physical Downlink Control Channel (PDCCH) based on precoding, that is, an Enhanced Physical Downlink Control Channel (Enhanced Physical Downlink Control Channel). ePDCCH). The ePDCCH may be demodulated based on a UE-specific reference signal, a Demodulation Reference Signal (DMRS). Each ePDCCH can still be mapped to k CCE-like logical units (defined herein as eCCEs), and the UE is required to perform blind detection on the terminal side. The ePDCCH with an aggregation level of L (L=1, 2, 4, or 8, etc.) can be mapped to L eCCEs, that is, composed of L eCCEs. An eCCE consists of one or several eREGs.

FIG. 1 is a schematic flowchart of a control channel transmission method according to an embodiment of the present application, as shown in FIG. 1 .

And determining, by the physical resource block pair, a first number of first resource unit groups, where the physical resource block pair includes N OFDM symbols, where the N is configured to transmit a control channel. Each of the OFDM symbols corresponds to a mapping rule from the first resource unit group to a resource unit in the physical resource block pair, where the N is an integer greater than or equal to 1. .

102. Determine, according to an aggregation level of the control channel, a first resource element group in a physical resource block pair to which the control channel is mapped.

103. Map, according to the mapping rule, the control channel to a resource element corresponding to the determined first resource unit group.

The control information carried by the control channel is sent on the first resource element group of the mapping. It should be noted that the execution entity of 101 to 104 may be a base station.

The control channel may be an Enhanced Physical Downlink Control Channel (ePDCCH).

Optionally, in a possible implementation manner of the embodiment, the N mapping rules corresponding to the N OFDM symbols may include at least two different rules.

For example, the at least two different rules include at least a first rule and a second rule, and the second rule is a rule after the first rule is cyclically shifted. For example, the resource unit group number of the resource unit group indicated by the first rule is mapped to 12 resource units included in each OFDM symbol as follows Shown: First rule: 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4; Second rule: 2, 3, 4, 5, 6, 7, 8, 1 2, 3, 4, 5.

Optionally, in a possible implementation manner of this embodiment, the resource element group numbers of the first resource unit group corresponding to the resource unit corresponding to the first available subcarrier in each OFDM symbol are different.

Optionally, in a possible implementation manner of the embodiment, the first resource unit group may include, but is not limited to, a resource unit set or an eREG corresponding to the eCCE.

Optionally, in a possible implementation manner of this embodiment, the first resource unit group includes at least one resource unit of the physical resource block pair.

Optionally, in a possible implementation manner of this embodiment, the first resource unit group includes a resource unit of the resource unit in the physical resource block pair except the reference signal and/or other control channel mapping resource unit. At least one resource unit of other resource units.

The reference signal may include, but is not limited to, a Common Reference Signal (CRS), a DMRS, a Channel Status Information Reference Signal (CSI-RS), and a Positioning Reference Signal (PRS). At least one of them.

Optionally, in a possible implementation manner of the embodiment, the resource unit set corresponding to the eCCE included in the first resource unit group may be further numbered; correspondingly, the mapping rule may include the first Mapping rules, where the first mapping rules include:

The resource element set numbers corresponding to the eCCEs corresponding to the resource elements corresponding to the subcarriers sequentially arranged in the same OFDM symbol are sequentially arranged and arranged in a loop.

Optionally, in a possible implementation manner of this embodiment, the eREGs included in the first resource unit group may be further numbered; correspondingly, the mapping rule may include a first mapping rule, where A mapping rule includes:

a resource list corresponding to an eCCE with the same resource unit set number in the first resource unit group The element set corresponds to two consecutive resource elements in the frequency domain in the same OFDM symbol, and the resource unit set number corresponding to the eCCE corresponding to the resource unit corresponding to the subcarriers in which the odd subcarrier numbers are sequentially arranged in the same OFDM symbol is compliant. Sub-arranged and cyclically arranged to support transmit diversity, for example, Space-Frequency Block Code (SFBC) transmit diversity or SFBC transmit diversity and Frequency Domain Switched Transmit Diversity (FSTD); and / or

The resource element set corresponding to the eCCE with the same resource element set number in the first resource unit group corresponds to two consecutive resource units in the frequency domain in the same OFDM symbol, and the even subcarrier numbers are sequentially arranged in the same OFDM symbol. The resource unit set numbers corresponding to the eCCEs corresponding to the resource elements corresponding to the subcarriers are sequentially arranged and cyclically arranged, thereby being capable of supporting transmit diversity, for example, Space-Frequency Block Code (SFBC) transmit diversity or SFBC. A combination of transmit diversity and Frequency Switched Transmit Diversity (FSTD).

The eREGs with the same eREG number in the first resource unit group correspond to two consecutive resource units in the frequency domain in the same OFDM symbol, and corresponding to the resource units corresponding to the subcarriers in which the odd subcarrier numbers are sequentially arranged in the same OFDM symbol The eREG numbers are sequentially arranged and cyclically arranged to support transmit diversity, for example, Space-Frequency Block Code (SFBC) transmit diversity or SFBC transmit diversity and Frequency Switched Transmit Diversity (FSTD). ) ό group; and / or

The eREGs with the same eREG number in the first resource unit group correspond to two consecutive resource units in the frequency domain in the same OFDM symbol, and the resource units corresponding to the subcarriers in which the even subcarrier numbers are sequentially arranged in the same OFDM symbol correspond to The eREG numbers are sequentially arranged and cyclically configured to support transmit diversity, for example, Space-Frequency Block Code (SFBC) transmit diversity or SFBC transmit diversity and Frequency Switched Transmit Diversity (FSTD). ) ό group.

Specifically, the resource unit set number or the eREG number corresponding to the eCCE is arranged in a small to large cycle or in a large to small cycle. For example, the cyclical arrangement may include: if the resource unit set number or the eREG number corresponding to the eCCE has been ranked to the maximum, the resource unit set number or the eREG number corresponding to the eCCE is cycled from small to large. arrangement.

For example, the cyclical arrangement may further include: if the resource unit set number or the eREG number corresponding to the eCCE has been minimized, the resource unit set number or the eREG number corresponding to the eCCE is as large as Small loops are arranged.

Optionally, in a possible implementation manner of the embodiment, the mapping rule may further include a second mapping rule.

The following will be a physical resource block pair (including a total of 168 resource elements), including 12 subcarriers in the frequency domain, and 14 OFDM symbols in the time domain as an example. The physical resource block pair is divided into 14/8+1 packets, each of the packets includes 8 of the OFDM symbols, and the last packet contains less than 8 of the OFDM symbols. Each of the eight OFDM symbols describes a mapping rule, that is, a total of eight mapping rules. Assuming that the number of resource unit groups in the physical resource block pair is 8, then the resource unit group number of the resource unit group indicated by the eight mapping rules is mapped to 12 resource units included in each OFDM symbol in one packet as follows: Shown as follows:

Mapping rules 1 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4

Mapping rules 2 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5

Mapping rules 3 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6

Mapping rules 4 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7

Mapping rules 5 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8

Mapping rules 6 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1 Mapping rule 7: 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2;

Mapping rules 8: 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3;

By analogy, 8 resource element groups are mapped to resource elements included in each of all the OFDM symbols by using the 8 mapping rules. So far, the location of the resource unit included in each of the eight resource unit groups can be determined by the above method, as shown in FIG. 2. Figure 2 shows a pair of physical resource blocks consisting of 168 resource elements. Each small square represents a resource unit, and the resource unit group number numbered 8 resource unit groups is used to represent each resource unit. The resource unit group to which it belongs, the vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.

Optionally, if the resource unit of the DMRS mapping is deducted, the location of the resource unit included in each of the 8 resource unit groups may be determined by using the foregoing method, as shown in FIG. 3, where the horizontal line The shading indicates the resource unit of the DMRS mapping. Figure 3 shows a physical resource block pair consisting of 168 resource elements (where the mapping does not consider 24 resource elements containing DMRS mapping), each small square represents a resource unit, where the number is 8 The resource unit group number of the resource unit group is used to indicate the resource unit group to which each resource unit belongs. The vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.

Optionally, based on the mapped physical resource block pair shown in FIG. 3, if the physical unit of the Physical Downlink Control Channel (PDCCH) mapping and the resource unit of the CRS mapping are further considered, The resource unit group and the corresponding number that have been mapped in the location are deducted, as shown in FIG. 4, wherein the shaded hatching indicates the resource unit of the PDCCH mapping, the blank indicates the resource unit of the CRS mapping, and the horizontal line hatching indicates the resource of the DMRS mapping. unit. Figure 4 shows a physical resource block pair consisting of 168 resource elements (where the mapping does not consider 24 resource elements containing DMRS mapping), each small square represents a resource unit, where the number is 8 The resource unit group number of the resource unit group is used to indicate the resource unit group to which each resource unit belongs. The vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.

In the following, a physical resource block pair (including a total of 168 resource elements), 12 subcarriers in the frequency domain, and 14 OFDM symbols in the time domain are taken as an example. The physical resource block pair is divided into 14/4+1 packets, each of the packets includes 4 of the OFDM symbols, and the last packet contains less than 4 of the OFDM symbols. Each of the four OFDM symbols described in the OFDM symbol corresponds to one mapping rule, that is, there are four mapping rules. Fake Let the number of resource unit groups in the physical resource block pair be 4, then the resource unit group number of the resource unit group indicated by the four mapping rules is mapped to 12 resource units included in each OFDM symbol in one packet as follows Shown as follows:

Mapping rules 1 : 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4;

Mapping rules 2: 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1;

Mapping rules 3: 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2;

Mapping rules 4: 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3;

And so on, using the four mapping rules, four resource unit groups are mapped to resource units included in each of all the OFDM symbols. So far, the location of the resource unit included in each of the four resource unit groups can be determined by the above method, as shown in FIG. 5. Figure 5 shows a physical resource block pair consisting of 168 resource elements. Each small square represents a resource unit, and the resource unit group number numbered 4 resource unit groups is used to represent each resource unit. The resource unit group to which it belongs, the vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.

Optionally, if the resource unit of the DMRS mapping is deducted, the location of the resource unit included in each of the four resource unit groups may be determined by using the foregoing method, as shown in FIG. The shading indicates the resource unit of the DMRS mapping. Figure 6 shows a physical resource block pair consisting of 168 resource elements (where the mapping does not consider 24 resource elements containing DMRS mapping), each small square represents a resource unit, where the number is 4 The resource unit group number of the resource unit group is used to indicate the resource unit group to which each resource unit belongs. The vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.

Optionally, if the physical downlink control channel (PDCCH) mapped resource unit, the CRS mapped resource unit, and the DMRS mapped resource unit are deducted, the method may be used to determine four resource unit groups. The location of the resource unit included in each resource unit group is as shown in FIG. 7, wherein the shaded hatching indicates the resource unit of the PDCCH mapping, the blank indicates the resource unit of the CRS mapping, and the horizontal line hatching indicates the resource unit of the DMRS mapping. Figure 7 shows a physical resource block pair consisting of 168 resource elements. Each small square represents a resource unit, and the resource unit group number numbered 4 resource unit groups is used to represent each resource unit. The resource unit group to which it belongs, the vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource. In the following, a physical resource block pair (including a total of 168 resource elements), 12 subcarriers in the frequency domain, and 14 OFDM symbols in the time domain are taken as an example. The physical resource block pair is divided into 14/2 packets, each of the packets includes 2 of the OFDM symbols, and each of the 2 OFDM symbols corresponds to one Mapping rules, that is, there are 2 mapping rules. Assuming that the number of resource element groups in the pair of physical resource blocks is 4, then the resource unit group numbers of the resource unit groups indicated by the two mapping rules are mapped to 12 resource elements included in each OFDM symbol in one packet as follows: Shown as follows:

Mapping rules 1 : 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4;

Mapping rules 2: 4, 3, 2, 1, 4, 3, 2, 1, 4, 3, 2, 1;

And so on, using the two mapping rules, four resource unit groups are mapped to resource units included in each of all the OFDM symbols. So far, the location of the resource unit included in each of the four resource unit groups can be determined by the above method, as shown in FIG. 8. Figure 8 shows a physical resource block pair consisting of 168 resource elements. Each small square represents a resource unit, and the resource unit group number numbered 4 resource unit groups is used to represent each resource unit. The resource unit group to which it belongs, the vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.

Optionally, if the resource unit of the DMRS mapping is deducted, the location of the resource unit included in each of the four resource unit groups may be determined by using the foregoing method, as shown in FIG. The shading indicates the resource unit of the DMRS mapping. Figure 9 shows a physical resource block pair consisting of 168 resource elements (where the mapping does not consider 24 resource elements containing DMRS mapping), each small square represents a resource unit, where the number is 4 The resource unit group number of the resource unit group is used to indicate the resource unit group to which each resource unit belongs. The vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.

Optionally, if the physical downlink control channel (PDCCH) mapped resource unit, the CRS mapped resource unit, and the DMRS mapped resource unit are deducted, the method may be used to determine four resource unit groups. The location of the resource unit included in each resource unit group is as shown in FIG. 10, wherein the shaded hatching indicates the resource unit of the PDCCH mapping, the blank indicates the resource unit of the CRS mapping, and the horizontal line hatching indicates the resource unit of the DMRS mapping. Figure 10 shows a physical resource block pair consisting of 168 resource elements, each small square representing a resource unit, wherein the resource unit group numbered 4 resource unit groups The number is used to indicate the resource unit group to which each resource unit belongs. The vertical direction indicates the frequency domain resource, and the horizontal direction indicates the time domain resource.

As can be seen from FIG. 2 to FIG. 10, the technical solution of the embodiment has the following advantages: as many resource unit groups as possible can be distributed on each OFDM symbol;

The performance of each resource unit group is as equal as possible, that is, each resource unit group includes both the resource unit in the middle of the physical resource block pair and the resource unit at the edge of the physical resource block;

The size of each resource unit group is approximately equal.

In this embodiment, it is possible to transmit, by using a resource unit group, such as a resource unit set or an eREG corresponding to the eCCE, a control information, such as an ePDCCH bearer, in the physical resource block pair.

FIG. 11 is a schematic flowchart of a control channel transmission method according to another embodiment of the present application, as shown in FIG.

1101. Determine at least one physical resource block pair for transmitting a control channel, where the physical resource block pair corresponds to a first number of first resource unit groups, and the physical resource block pair includes N the OFDM symbols, the N Each of the OFDM symbols corresponds to a mapping rule from the first resource unit group to a resource unit in the physical resource block pair, wherein the N is an integer greater than or equal to 1. .

1102. Determine, according to the candidate aggregation level Lk of the control channel, a first resource unit group in a physical resource block pair to which the control channel is mapped; where k is an integer, and Lk is any one of k candidate aggregation levels. .

1103. Determine, according to the mapping rule, a resource unit corresponding to the first resource unit group.

1104. The resource unit corresponding to the first resource unit group is detected, and the control information carried by the control channel is parsed from the first resource element group that is correctly detected.

Specifically, the resource unit corresponding to the first resource unit group is detected, and when the detection is correct, the control information carried by the control channel is parsed from the correctly detected first resource unit group, and the detection is incorrect. At the time, the resource unit corresponding to the candidate aggregation level other than the Lk among the k candidate aggregation levels is continuously detected.

It should be noted that the execution body of 1101 ~ 1104 can be a terminal.

The control channel may be an Enhanced Physical Downlink Control Channel (ePDCCH). Optionally, in a possible implementation manner of the embodiment, the N mapping rules corresponding to the N OFDM symbols may include at least two different rules.

For example, the at least two different rules include at least a first rule and a second rule, and the second rule is a rule after the first rule is cyclically shifted. For example, the resource unit group number of the resource unit group indicated by the first rule is mapped to the 12 resource units included in each OFDM symbol as follows: First rule: 1, 2, 3, 4, 5, 6, 7 8, 8, 2, 3, 4; Second rule: 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5.

Corresponding to the resource elements corresponding to the subcarriers sequentially arranged in the same OFDM symbol The eREG numbers are arranged in order and arranged in a loop.

The resource element set corresponding to the eCCE with the same resource element set number in the first resource unit group corresponds to two consecutive resource units in the frequency domain in the same OFDM symbol, and the odd subcarrier numbers are sequentially arranged in the same OFDM symbol. The resource unit set numbers corresponding to the eCCEs corresponding to the resource elements corresponding to the subcarriers are sequentially arranged and cyclically arranged, thereby being capable of supporting transmit diversity, for example, Space-Frequency Block Code (SFBC) transmit diversity or SFBC. a combination of transmit diversity and Frequency Switched Transmit Diversity (FSTD); and/or

The eREGs with the same eREG number in the first resource unit group correspond to two consecutive resource units in the frequency domain in the same OFDM symbol, and the resource units corresponding to the subcarriers in which the even subcarrier numbers are sequentially arranged in the same OFDM symbol correspond to eREG numbers are arranged in sequence and looped 歹 'J , which can support transmit diversity, for example, Space-Frequency Block Code (SFBC) transmit diversity or SFBC transmit diversity and Frequency Domain Switched Transmit Diversity (FSTD) ό groups.

Specifically, the resource unit set number or the eREG number corresponding to the eCCE is arranged in a cycle from small to large or in a cycle from large to small.

For example, the cyclical arrangement may include: if the resource unit set number or the eREG number corresponding to the eCCE has been ranked to the maximum, the resource unit set number or the eREG number corresponding to the eCCE is cycled from small to large. arrangement.

The technical solution of the terminal provided in this embodiment is corresponding to the technical solution executed by the base station provided in the embodiment corresponding to FIG. 1. For details, refer to the related content in the embodiment corresponding to FIG. 1, and details are not described herein again.

In this embodiment, it is possible to receive control information of some control channels, such as an ePDCCH, by using a resource unit group or an eREG corresponding to a resource unit group, such as an eCCE, in a physical resource block pair.

FIG. 12 is a schematic flowchart of a control channel transmission method according to another embodiment of the present application, as shown in FIG.

1201. Determine at least one physical resource block pair for transmitting a control channel, where the physical resource a block pair corresponding to a first number of first resource unit groups, where the physical resource block pair includes N the OFDM symbols, and mapping the first resource unit group to the physical resource block pair according to S mapping rules On the resource unit, where N is an integer greater than or equal to 1, and S is a positive integer smaller than the N.

1202. Determine, according to an aggregation level of the control channel, a first resource element group in a physical resource block pair to which the control channel is mapped.

1203. Map the control channel to the resource element corresponding to the determined first resource unit group according to the mapping rule.

1204. Send, on the first resource element group of the mapping, control information carried by the control channel.

It should be noted that the execution entity of 1201 ~ 1204 may be a base station.

Optionally, in a possible implementation manner of this embodiment, the first resource unit group is respectively mapped to the physical resource block pair according to one mapping rule of the S mapping rules. On the resource unit. The S mapping rules may be further numbered.

For example, in the same OFDM symbol, according to the order of the subcarrier numbers of the subcarriers and in the order of the symbol numbers of the OFDM symbols, the first resource unit groups are sequentially followed by the S The order of the rule numbers of the mapping rules respectively maps the first resource unit group to the resource units in the physical resource block pair according to one of the S mapping rules.

Specifically, it may be mapped to a discontinuous resource unit in the pair of physical resource blocks. It can support transmit diversity, for example, Space-Frequency Block Code (SFBC) transmit diversity or SFBC transmit diversity and Frequency Switched Transmit Diversity (FSTD) ό groups.

The order of the rule numbers of the S mapping rules may be that the rule numbers of the S mapping rules are arranged in a small to large manner; or the rule numbers of the S mapping rules may be arranged in a large to small order. This embodiment does not limit this.

Optionally, in a possible implementation manner of this embodiment, the mapping rule may include, but is not limited to, at least one of the following rules:

The following is a physical resource block (containing a total of 168 resource elements), including 12 subcarriers in the frequency domain, and 14 OFDM symbols in the time domain as an example. Each of the OFDM symbols included in each physical resource block is a packet in which two mapping rules are cyclically and continuously mapped into each of the OFDM symbols. Assuming that the number of resource unit groups in the physical resource block is 4, the resource unit group numbers of the resource unit groups indicated by the two mapping rules are continuously mapped to the 168 resource units included in the physical resource block as follows:

Mapping rules 1 : 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4;

Mapping rules 2: 4, 3, 2, 1, 4, 3, 2, 1, 4, 3, 2, 1;

So far, the location of the resource unit included in each of the four resource unit groups can be determined by the above method, as shown in FIG. FIG. 13 shows a physical resource block composed of 168 resource units, each small square represents a resource unit, and the resource unit group number numbered 4 resource unit groups is used to indicate that each resource unit belongs to The resource unit group, the vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.

Optionally, if the resource unit of the DMRS mapping is deducted further, the above method is utilized. The location of the resource unit included in each of the four resource unit groups may be determined, as shown in FIG. 14, wherein the horizontal line hatching indicates the resource unit of the DMRS mapping. Figure 14 shows a physical resource block pair consisting of 168 resource elements (where the mapping includes 24 resource elements containing DMRS mapping), each small square represents a resource unit, where the number is 4 The resource unit group number of the resource unit group is used to indicate the resource unit group to which each resource unit belongs. The vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.

Optionally, if the physical downlink control channel (PDCCH) mapped resource unit, the CRS mapped resource unit, and the DMRS mapped resource unit are deducted, the method may be used to determine four resource unit groups. The location of the resource unit included in each resource unit group is as shown in FIG. 15, wherein the shaded hatching indicates the resource unit of the PDCCH mapping, the blank indicates the resource unit of the CRS mapping, and the horizontal line hatching indicates the resource unit of the DMRS mapping. Figure 15 shows a physical resource block pair consisting of 168 resource elements. Each small square represents a resource unit, and the resource unit group number numbered 4 resource unit groups is used to represent each resource unit. The resource unit group to which it belongs, the vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.

As can be seen from FIG. 13 to FIG. 15, the technical solution of this embodiment has the following advantages: as many resource unit groups as possible can be distributed on each OFDM symbol;

The size of each resource unit group is approximately equal.

16 is a schematic flowchart of a control channel transmission method according to another embodiment of the present application, as shown in FIG. 16.

1601: Determine at least one physical resource block pair for transmitting a control channel, where the physical resource block pair corresponds to a first number of first resource unit groups, and the physical resource block pair includes N the OFDM symbols, according to S The mapping rule maps the first resource unit group to the resource unit in the physical resource block pair, where the N is an integer greater than or equal to 1, and the S is a positive integer smaller than the N. 1602. Determine, according to the candidate aggregation level Lk of the control channel, a first resource unit group in a physical resource block pair to which the control channel is mapped; where k is an integer, and Lk is any one of k candidate aggregation levels. .

1603. Determine, according to the mapping rule, a resource unit corresponding to the first resource unit group. 1604. The resource unit corresponding to the first resource unit group is detected, and the control information carried by the control channel is parsed from the first resource element group that is correctly detected.

It should be noted that the execution body of 1601 ~ 1604 can be a terminal.

The technical solution of the terminal provided in this embodiment is corresponding to the technical solution executed by the base station provided in the embodiment corresponding to FIG. 12. For details, refer to the related content in the embodiment corresponding to FIG. 12, and details are not described herein again.

It should be noted that, for the foregoing method embodiments, for the sake of brevity, they are all described as a series of action combinations, but those skilled in the art should understand that the present application is not limited by the described action sequence. Because in accordance with the present application, certain steps may be performed in other orders or concurrently. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

FIG. 17 is a schematic structural diagram of a base station according to another embodiment of the present application, as shown in FIG. 17. Ben The base station of an embodiment may include a determining unit 1701, a mapping unit 1702, and a transmitting unit 1703. The determining unit 1701 is configured to determine at least one physical resource block pair for transmitting a control channel, and determine, according to an aggregation level of the control channel, a first resource unit in a physical resource block pair to which the control channel is mapped. And the physical resource block pair corresponding to the first number of the first resource unit group, where the physical resource block pair includes N the OFDM symbols, and each of the N OFDM symbols corresponds to the OFDM symbol a mapping rule from the first resource unit group to the resource unit in the physical resource block pair, where the N is an integer greater than or equal to 1; the mapping unit 1702 is configured to, according to the mapping rule, The control channel is mapped to the resource unit corresponding to the first resource unit group determined by the determining unit 1701. The sending unit 1703 is configured to send the control channel on the first resource element group mapped by the mapping unit 1702. The control information carried.

The reference signal may include but is not limited to a common reference signal (Common Reference Signal, CRS), DMRS, Channel Status Information Reference Signal (CSI-RS), and at least one of Positioning Reference Signal (PRS).

The resource element set corresponding to the eCCE with the same resource element set number in the first resource unit group corresponds to two consecutive resource units in the frequency domain in the same OFDM symbol, and the even subcarrier numbers are sequentially arranged in the same OFDM symbol. The resource unit set numbers corresponding to the eCCEs corresponding to the resource elements corresponding to the subcarriers are sequentially arranged and cyclically arranged, thereby being capable of supporting transmit diversity, for example, Space-Frequency Block Code (SFBC) transmit diversity or SFBC. A combination of transmit diversity and Frequency Switched Transmit Diversity (FSTD). Optionally, in a possible implementation manner of this embodiment, the eREGs included in the first resource unit group may be further numbered; correspondingly, the mapping rule may include a first mapping rule, where A mapping rule includes:

The eREGs with the same eREG number in the first resource unit group correspond to two consecutive resource units in the frequency domain in the same OFDM symbol, and corresponding to the resource units corresponding to the subcarriers in which the odd subcarrier numbers are sequentially arranged in the same OFDM symbol The eREG numbers are sequentially arranged and cyclically configured to support transmit diversity, for example, Space-Frequency Block Code (SFBC) transmit diversity or SFBC transmit diversity and Frequency Switched Transmit Diversity (FSTD). ) ό group; and / or

The eREGs with the same eREG number in the first resource unit group correspond to two consecutive resource units in the frequency domain in the same OFDM symbol, and the resource units corresponding to the subcarriers in which the even subcarrier numbers are sequentially arranged in the same OFDM symbol correspond to The eREG numbers are sequentially arranged and cyclically configured to support transmit diversity, for example, Space-Frequency Block Code (SFBC) transmit diversity or SFBC transmit diversity and Frequency Switched Transmit Diversity (FSTD). ) 0 group.

For example, if the resource unit set number or the eREG number corresponding to the eCCE has been maximized, the resource unit set number or the eREG number corresponding to the eCCE is arranged in a small to large loop.

For example, if the resource unit set number or the eREG number corresponding to the eCCE has been minimized, the resource unit set number or the eREG number corresponding to the eCCE is arranged in a cycle from large to small.

The base station provided in this embodiment may perform the technical solution executed by the base station provided in the embodiment corresponding to FIG. 1. For details, refer to related content in the embodiment corresponding to FIG. 1, and details are not described herein again.

FIG. 18 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure, as shown in FIG. 18. The terminal of this embodiment may include a determining unit 1801 and a receiving unit 1802. The determining unit 1801 is configured to determine at least one physical resource block pair for transmitting a control channel, where the physical resource block pair corresponds to a first number of first resource unit groups, and the physical resource block pair includes N OFDM symbol, each of the N OFDM symbols corresponding to a mapping rule from the first resource unit group to a resource unit in the physical resource block pair, where the N is An integer greater than or equal to 1; a receiving unit 1802, configured to determine, according to the candidate aggregation level Lk of the control channel, the first resource unit group in the physical resource block pair determined by the determining unit 1801 to which the control channel is mapped Determining, according to the mapping rule, a resource unit corresponding to the first resource unit group, and detecting a resource unit corresponding to the first resource unit group, and parsing from the first resource element group that is correctly detected. Obtaining control information carried by the control channel; where k is an integer and Lk is any one of k candidate aggregation levels.

For example, the at least two different rules include at least a first rule and a second rule, and the second rule is a rule after the first rule is cyclically shifted. For example, the resource unit group number of the resource unit group indicated by the first rule is mapped to the 12 resource units included in each OFDM symbol as follows: First rule: 1, 2, 3, 4, 5, 6, 7 8, 8, 2, 3, 4; Second rule: 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5. Optionally, in a possible implementation manner of this embodiment, the resource element group numbers of the first resource unit group corresponding to the resource unit corresponding to the first available subcarrier in each OFDM symbol are different.

The resource element set corresponding to the eCCE with the same resource element set number in the first resource unit group corresponds to two consecutive resource units in the frequency domain in the same OFDM symbol, and the odd subcarrier numbers are sequentially arranged in the same OFDM symbol. The corresponding sub-carrier corresponding to the resource unit The resource unit set numbers corresponding to the eCCE are sequentially arranged and cyclically arranged to support transmit diversity, for example, Space-Frequency Block Code (SFBC) transmit diversity or SFBC transmit diversity and frequency domain switch transmit diversity (Frequency Switched) a combination of Transmit Diversity, FSTD ); and/or

The eREGs with the same eREG number in the first resource unit group correspond to two consecutive resource units in the frequency domain in the same OFDM symbol, and the resource units corresponding to the subcarriers in which the even subcarrier numbers are sequentially arranged in the same OFDM symbol correspond to The eREG numbers are sequentially arranged and cyclically |J to support transmit diversity, for example, Space-Frequency Block Code (SFBC) transmit diversity or SFBC transmit diversity and frequency-switched transmit diversity (Frequency Switched Transmit) Diversity, FSTD) ό group.

For example, if the resource unit set number or the eREG number corresponding to the eCCE has been maximized, the resource unit set number or the eREG number corresponding to the eCCE is Small to large loops.

The terminal provided in this embodiment can perform the technical solution executed by the terminal provided in the embodiment corresponding to FIG. 11. For details, refer to related content in the embodiment corresponding to FIG. 11, and details are not described herein again.

FIG. 19 is a schematic structural diagram of a base station according to another embodiment of the present application, as shown in FIG. 19. The base station of this embodiment may include a determining unit 1901, a mapping unit 1902, and a transmitting unit 1903. The determining unit 1901 is configured to determine at least one physical resource block pair for transmitting a control channel, and determine, according to an aggregation level of the control channel, a first resource unit in a physical resource block pair to which the control channel is mapped. a group, the physical resource block pair corresponding to a first number of first resource unit groups, where the physical resource block pair includes N the OFDM symbols, and mapping the first resource unit group to the On the resource unit in the physical resource block pair, where N is an integer greater than or equal to 1, and S is a positive integer smaller than the N; mapping unit 1902, configured to: according to the mapping rule The control channel is mapped to the resource unit corresponding to the first resource unit group determined by the determining unit 1901; the sending unit 1903 is configured to be in the mapping unit 1902. Sending control information carried by the control channel on the mapped first resource unit group.

For example, in the same OFDM symbol, according to the order of the subcarrier numbers of the subcarriers and in the order of the symbol numbers of the OFDM symbols, the first resource unit groups are sequentially sequentially according to the order of the rule numbers of the S mapping rules. One of the S mapping rules maps the first resource unit group to a resource unit in the physical resource block pair.

The order of the rule numbers of the S mapping rules may be that the rule numbers of the S mapping rules are arranged in a small to large manner; or the rule numbers of the S mapping rules may be arranged in a large to small order. This embodiment does not limit this. Optionally, in a possible implementation manner of this embodiment, the mapping rule may include, but is not limited to, at least one of the following rules:

The base station provided in this embodiment can perform the technical solution executed by the base station provided in the embodiment corresponding to FIG. 12. For details, refer to related content in the embodiment corresponding to FIG. 12, and details are not described herein again.

FIG. 20 is a schematic structural diagram of a terminal according to another embodiment of the present application, as shown in FIG. 20. The terminal of this embodiment may include a determining unit 2001 and a receiving unit 2002. The determining unit 2001 is configured to determine at least one physical resource block pair for transmitting a control channel, where the physical resource block pair corresponds to a first number of first resource unit groups, and the physical resource block pair includes N OFDM symbol, the first resource unit group is mapped to the resource unit in the physical resource block pair according to the S mapping rules, where the N is an integer greater than or equal to 1, and the S is smaller than the a positive integer of N; a receiving unit 2002, configured to determine, according to the candidate aggregation level Lk of the control channel, the first resource unit group in the physical resource block pair determined by the determining unit 2001 to which the control channel is mapped, according to Determining, by the mapping rule, the resource unit corresponding to the first resource unit group, and detecting the resource unit corresponding to the first resource unit group, and parsing the first resource element group that is correctly detected Control information carried by the control channel; where k is an integer and Lk is any one of k candidate aggregation levels.

The control channel may be an enhanced physical downlink control channel (Enhanced).

Physical Downlink Control Channel, ePDCCH ).

Optionally, in a possible implementation manner of this embodiment, the first resource unit group includes at least one resource unit of the physical resource block pair. Optionally, in a possible implementation manner of this embodiment, the first resource unit group includes a resource unit of the resource unit in the physical resource block pair except the reference signal and/or other control channel mapping resource unit. At least one resource unit of other resource units.

The terminal provided in this embodiment may be executed by the terminal provided in the embodiment corresponding to FIG. For a detailed description, refer to related content in the embodiment corresponding to FIG. 16 , and details are not described herein again.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit 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 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 electrical, mechanical or otherwise.

The units described as separate components may or may not be physically separated, and the components displayed as 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 objectives 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 hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium and includes 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 execute the method of the various embodiments of the present application. Part of the steps. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and the like, and the program code can be stored. Medium. Finally, it should be noted that the above embodiments are only used to explain the technical solutions of the present application, and are not limited thereto; although the present application is described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently substituted; 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

claims

1. A control channel transmission method, characterized by including:

Determine at least one physical resource block pair used to transmit the control channel, the physical resource block pair corresponds to a first number of first resource unit groups, the physical resource block pair includes N OFDM symbols, and the N all Each OFDM symbol in the OFDM symbols corresponds to a mapping rule from the first resource unit group to a resource unit in the physical resource block pair, where N is an integer greater than or equal to 1;

Determine the first resource unit group in the pair of physical resource blocks to which the control channel is mapped according to the aggregation level of the control channel;

According to the mapping rule, map the control channel to the resource unit corresponding to the determined first resource unit group;

On the mapped first resource unit group, the control information carried by the control channel is sent.

2. The method according to claim 1, wherein the N mapping rules corresponding to the N OFDM symbols include at least two different rules.

3. The method according to claim 1 or 2, characterized in that, the resource unit group number of the first resource unit group corresponding to the resource unit corresponding to the first available subcarrier in each OFDM symbol different.

4. The method according to any one of claims 1 to 3, characterized in that the first resource unit group includes a resource unit set or eREG corresponding to the eCCE.

5. The method according to any one of claims 1 to 4, characterized in that, the first resource unit group includes at least _one resource unit in the physical resource block pair; or ' At least one resource unit among other resource units other than resource units mapped by other control channels.

6. The method according to any one of claims 1 to 5, characterized in that, the method further includes: numbering the resource unit set corresponding to the eCCE included in the first resource unit group; The mapping rules include a first mapping rule, and the first mapping rule includes:

The resource unit set numbers corresponding to the eCCE corresponding to the resource units corresponding to the subcarriers whose numbers are arranged sequentially in the same OFDM symbol are arranged sequentially and cyclically.

7. The method according to any one of claims 1 to 5, characterized in that, the method further includes: numbering eREGs included in the first resource unit group; the mapping rule includes a first mapping rules, the first mapping rule includes:

The eREG numbers corresponding to the resource units corresponding to the subcarriers whose numbers are arranged sequentially in the same OFDM symbol are arranged sequentially and cyclically.

8. The method according to any one of claims 1 to 5, characterized in that, the method further includes: numbering the resource unit set corresponding to the eCCE included in the first resource unit group; The mapping rules include a first mapping rule, and the first mapping rule includes:

The resource unit set corresponding to the eCCE with the same resource unit set number in the first resource unit group corresponds to two consecutive resource units in the frequency domain in the same OFDM symbol, and the odd subcarrier numbers are arranged sequentially in the same OFDM symbol. The resource unit set numbers corresponding to the eCCE corresponding to the resource units corresponding to the subcarriers are arranged sequentially and cyclically; and/or

The resource unit set corresponding to the eCCE with the same resource unit set number in the first resource unit group corresponds to two consecutive resource units in the frequency domain in the same OFDM symbol, and the even subcarrier numbers are arranged sequentially in the same OFDM symbol. The resource unit set numbers corresponding to the eCCE corresponding to the resource units corresponding to the subcarriers are arranged in sequence and in a circular manner.

9. The method according to any one of claims 1 to 5, characterized in that, the method further includes: numbering eREGs included in the first resource unit group; the mapping rule includes a first mapping rules, the first mapping rule includes:

The eREGs with the same eREG number in the first resource unit group correspond to two consecutive resource units in the frequency domain in the same OFDM symbol, and the resource units corresponding to the subcarriers arranged in sequence with odd subcarrier numbers in the same OFDM symbol correspond to The eREG numbers are arranged sequentially and rotated ¹ J; and/or

The eREGs with the same eREG number in the first resource unit group correspond to two consecutive resource units in the frequency domain in the same OFDM symbol, and the resource units corresponding to the subcarriers arranged in sequence with even subcarrier numbers in the same OFDM symbol correspond to The eREG numbers are arranged sequentially and cyclically.

10. The method according to any one of claims 6 to 9, characterized in that, the combined numbers or the eREG numbers are arranged in a circular order from small to large or

11. The method according to claim 10, wherein the cyclic arrangement includes: if the resource unit set number corresponding to the eCCE or the eREG number has been arranged to the maximum, then the resource unit set corresponding to the eCCE The numbers or eREG numbers are arranged in a circular order from smallest to largest; or

If the corresponding resource unit set number or the eREG number corresponding to the eCCE has been arranged to the minimum, then the resource unit set number or the eREG number corresponding to the eCCE is arranged in a circular order from large to small.

12. The method according to any one of claims 1 to 11, characterized in that the mapping rules further include a second mapping rule,

In the second mapping rule, the arrangement order of the resource unit sets corresponding to the eCCEs corresponding to the resource units corresponding to the subcarriers in the same OFDM symbol that are sequentially numbered in the same OFDM symbol in the first mapping rule is The arrangement order of the resource unit set corresponding to the eCCE corresponding to the resource unit corresponding to the arranged subcarrier is obtained by cyclic shifting; or

In the second mapping rule, the eREG numbers corresponding to the resource units corresponding to the sequentially numbered subcarriers in the same OFDM symbol in the first mapping rule are determined by the order of the sequentially numbered subcarriers in the same OFDM symbol in the first mapping rule. The arrangement order of the eREG numbers corresponding to the corresponding resource units is obtained by cyclic shifting.

13. A control channel transmission method, characterized by including:

Determine the first resource unit group in the physical resource block pair to which the control channel is mapped according to the candidate aggregation level Lk of the control channel; where k is an integer, and Lk is any one of k candidate aggregation levels;

Determine the resource unit corresponding to the first resource unit group according to the mapping rule; detect the resource unit corresponding to the first resource unit group, and obtain the resource unit from the correctly detected first resource unit group. The control information carried by the control channel.

14. The method according to claim 13, characterized in that, the N OFDM The N mapping rules corresponding to the symbols include at least two different rules.

15. The method according to claim 13 or 14, characterized in that, the resource unit group number of the first resource unit group corresponding to the resource unit corresponding to the first available subcarrier in each OFDM symbol different.

16. The method according to any one of claims 13 to 15, characterized in that the first resource unit group includes a resource unit set or eREG corresponding to the eCCE.

17. The method according to any one of claims 13 to 16, wherein the first resource unit group includes at least one resource unit in the physical resource block pair; or _- 1. At least one resource unit among other resource units other than the resource units to which the number and/or other control channels are mapped.

18. The method according to any one of claims 13 to 17, characterized in that, the method further includes: numbering the resource unit set corresponding to the eCCE included in the first resource unit group; The mapping rules include a first mapping rule, and the first mapping rule includes:

19. The method according to any one of claims 13 to 17, characterized in that, the method further includes: numbering eREGs included in the first resource unit group; the mapping rule includes a first mapping rules, the first mapping rule includes:

20. The method according to any one of claims 13 to 17, characterized in that, the method further includes: numbering the resource unit set corresponding to the eCCE included in the first resource unit group; The mapping rules include a first mapping rule, and the first mapping rule includes:

Resource units corresponding to eCCEs with the same resource unit set number in the first resource unit group The element set corresponds to two consecutive resource units in the frequency domain in the same OFDM symbol, and the resource unit set number corresponding to the eCCE corresponding to the resource unit corresponding to the subcarriers arranged in sequence in the same OFDM symbol is even-numbered subcarrier numbers. Arranged and cyclically.

21. The method according to any one of claims 13 to 17, characterized in that, the method further includes: numbering eREGs included in the first resource unit group; the mapping rule includes a first mapping rules, the first mapping rule includes:

The eREGs with the same eREG number in the first resource unit group correspond to two consecutive resource units in the frequency domain in the same OFDM symbol, and the resource units corresponding to the subcarriers arranged in sequence with odd subcarrier numbers in the same OFDM symbol correspond to The eREG numbers are arranged sequentially and cyclically; and/or

22. The method according to any one of claims 20 to 21, characterized in that the resource unit set numbers corresponding to the eCCE or the eREG numbers are arranged in a circular order from small to large or from large to small.

23. The method according to claim 22, wherein the cyclic arrangement includes: if the resource unit set number corresponding to the eCCE or the eREG number has been arranged to the maximum, then the resource unit set corresponding to the eCCE The numbers or the eREG numbers are arranged in a circular order from small to large; or

If the resource unit set number corresponding to the eCCE or the eREG number has been arranged to the minimum, the resource unit set number corresponding to the eCCE or the eREG number is arranged in a circular order from large to small.

24. The method according to any one of claims 13 to 23, characterized in that the mapping rules further include a second mapping rule,

In the second mapping rule, the arrangement order of the resource unit sets corresponding to the eCCEs corresponding to the resource units corresponding to the subcarriers in the same OFDM symbol that are sequentially numbered in the same OFDM symbol in the first mapping rule is The arrangement order of the resource unit set corresponding to the eCCE corresponding to the resource unit corresponding to the arranged subcarrier is obtained by cyclic shifting; or In the second mapping rule, the eREG numbers corresponding to the resource units corresponding to the sequentially numbered subcarriers in the same OFDM symbol in the first mapping rule are determined by the order of the sequentially numbered subcarriers in the same OFDM symbol in the first mapping rule. The arrangement order of the eREG numbers corresponding to the corresponding resource units is obtained by cyclic shifting.

25. A control channel transmission method, characterized by including:

Determine at least one physical resource block pair used to transmit the control channel, the physical resource block pair corresponds to a first number of first resource unit groups, the physical resource block pair includes N OFDM symbols, according to S mapping rules Map the first resource unit group to the resource units in the physical resource block pair, where N is an integer greater than or equal to 1, and S is a positive integer less than N;

26. The method according to claim 25, characterized in that the first resource unit group includes a resource unit set or eREG corresponding to the eCCE.

27. The method according to claim 25 or 26, characterized in that,

The first resource unit group includes at least one resource unit in the physical resource block pair; or at least one resource unit in other resource units other than the resource units mapped by the number and/or other control channels.

28. The method according to any one of claims 25 to 27, wherein mapping the first resource unit group to the resource units in the physical resource block pair according to S mapping rules includes: :

The first resource unit group is respectively mapped to the resource unit in the physical resource block pair according to one of the S mapping rules in sequence.

29. The method according to claim 28, characterized in that, the method further includes: numbering the S mapping rules; Mapping rules, mapping the first resource unit group to the resource units in the physical resource block pair, include:

In the same OFDM symbol, in the order of the subcarrier numbers of the subcarriers and in the order of the symbol numbers of the OFDM symbols, the first resource unit group is sequentially assigned according to the order of the rule numbers of the S mapping rules. One mapping rule among the S mapping rules respectively maps the first resource unit group to the resource units in the physical resource block pair.

30. The method according to claim 29, characterized in that the sequence of rule numbers of the S mapping rules includes:

The rule numbers of the S mapping rules are arranged from small to large; or

The rule numbers of the S mapping rules are arranged from large to small.

31. The method according to any one of claims 25 to 30, characterized in that the mapping rules include at least one of the following rules:

The resource units corresponding to the subcarriers numbered from small to large in the same OFDM symbol respectively correspond to the first resource unit group numbered from small to large;

The resource units corresponding to the subcarriers numbered from small to large in the same OFDM symbol respectively correspond to the first resource unit group numbered from large to small.

32. A control channel transmission method, characterized by including:

33. The method according to claim 32, wherein the first resource unit group includes a resource unit set or eREG corresponding to the eCCE.

34. The method according to claim 32 or 33, characterized in that,

The _first resource unit group includes at least one resource unit in the physical resource block pair; or other resource units other than resource units mapped by other control channels. At least one resource unit.

35. The method according to any one of claims 32 to 34, wherein mapping the first resource unit group to the resource units in the physical resource block pair according to S mapping rules includes: :

36. The method according to claim 35, characterized in that, the method further includes: numbering the S mapping rules; and sequentially according to one of the S mapping rules, The first resource unit group is respectively mapped to the resource unit in the physical resource block pair, including:

37. The method according to claim 36, characterized in that the sequence of rule numbers of the S mapping rules includes:

The rule numbers of the S mapping rules are arranged from small to large; or

The rule numbers of the S mapping rules are arranged from large to small.

38. The method according to any one of claims 32 to 37, characterized in that the mapping rules include at least one of the following rules:

39. A base station, characterized by including: a determining unit configured to determine at least one physical resource block pair used to transmit a control channel, and determine the first resource unit group in the physical resource block pair to which the control channel is mapped according to the aggregation level of the control channel, so The physical resource block pair corresponds to a first number of first resource unit groups, the physical resource block pair includes N OFDM symbols, and each OFDM symbol in the N OFDM symbols corresponds to one from all The mapping rules of the first resource unit group to the resource units in the physical resource block pair, wherein the N is an integer greater than or equal to 1;

A mapping unit, configured to map the control channel to the resource unit corresponding to the first resource unit group determined by the determining unit according to the mapping rule;

A sending unit, configured to send the control information carried by the control channel on the first resource unit group mapped by the mapping unit.

40. The base station according to claim 39, wherein the N mapping rules corresponding to the N OFDM symbols include at least two different rules.

41. The base station according to claim 39 or 40, characterized in that, the resource unit group number of the first resource unit group corresponding to the resource unit corresponding to the first available subcarrier in each OFDM symbol different.

42. The base station according to any one of claims 39 to 41, wherein the first resource unit group includes a resource unit set or eREG corresponding to the eCCE.

43. The base station according to any one of claims 39 to 42, characterized in that: the first resource unit group includes at least one resource unit in the physical resource block pair; or a number and/or other control channel At least one resource unit among other resource units other than the mapped resource unit.

44. The base station according to any one of claims 39 to 43, wherein the method further includes: numbering the resource unit set corresponding to the eCCE included in the first resource unit group; The mapping rules include a first mapping rule, and the first mapping rule includes:

45. The base station according to any one of claims 39 to 43, characterized in that the method further includes: numbering eREGs included in the first resource unit group; the mapping rule Then the first mapping rule is included, and the first mapping rule includes:

46. The base station according to any one of claims 39 to 43, wherein the method further includes: numbering the resource unit set corresponding to the eCCE included in the first resource unit group; The mapping rules include a first mapping rule, and the first mapping rule includes:

47. The base station according to any one of claims 39 to 43, wherein the method further includes: numbering eREGs included in the first resource unit group; the mapping rule includes a first mapping rules, the first mapping rule includes:

48. The base station according to any one of claims 44 to 47, characterized in that the resource unit set numbers corresponding to the eCCE or the eREG numbers are arranged in a circular order from small to large or in a circular order from large to small. .

49. The base station according to claim 48, wherein the cyclic arrangement includes: if the resource unit set number corresponding to the eCCE or the eREG number has been arranged to the highest is large, then the resource unit set numbers corresponding to the eCCE or the eREG numbers are arranged in a circular order from small to large; or

50. The base station according to any one of claims 39 to 49, characterized in that the mapping rule further includes a second mapping rule,

51. A terminal, characterized in that it includes:

Determining unit, configured to determine at least one physical resource block pair used for transmitting the control channel, where the physical resource block pair corresponds to a first number of first resource unit groups, where the physical resource block pair includes N OFDM symbols, Each of the N OFDM symbols corresponds to a mapping rule from the first resource unit group to a resource unit in the physical resource block pair, where N is greater than or an integer equal to 1;

The receiving unit is configured to determine, according to the candidate aggregation level Lk of the control channel, the first resource unit group in the physical resource block pair determined by the determining unit to which the control channel is mapped, and determine the mapping rule according to the mapping rule. The resource units corresponding to the first resource unit group are detected, and the resource units corresponding to the first resource unit group are detected, and the control information carried by the control channel is obtained by parsing from the correctly detected first resource unit group; where k is an integer, any one of L _k candidate aggregation levels.

52. The terminal according to claim 51, wherein the N mapping rules corresponding to the N OFDM symbols include at least two different rules.

53. The terminal according to claim 51 or 52, characterized in that, each OFDM The resource unit group number of the first resource unit group corresponding to the resource unit corresponding to the first available subcarrier in the symbol is different.

54. The terminal according to any one of claims 51 to 53, wherein the first resource unit group includes a resource unit set or eREG corresponding to the eCCE.

55. The terminal according to any one of claims 51 to 54, wherein the first resource unit group includes at least one resource unit in the physical resource block pair; or _- 1. At least one resource unit among other resource units other than the resource units to which the number and/or other control channels are mapped.

56. The terminal according to any one of claims 51 to 55, wherein the method further includes: numbering the resource unit set corresponding to the eCCE included in the first resource unit group; The mapping rules include a first mapping rule, and the first mapping rule includes:

57. The terminal according to any one of claims 51 to 55, wherein the method further includes: numbering eREGs included in the first resource unit group; the mapping rule includes a first mapping rules, the first mapping rule includes:

58. The terminal according to any one of claims 51 to 55, wherein the method further includes: numbering the resource unit set corresponding to the eCCE included in the first resource unit group; The mapping rules include a first mapping rule, and the first mapping rule includes:

The resource unit set corresponding to the eCCE with the same resource unit set number in the first resource unit group corresponds to two consecutive resource units in the frequency domain in the same OFDM symbol, and the even subcarrier numbers are arranged sequentially in the same OFDM symbol. The resource unit corresponding to the subcarrier corresponds to the The resource unit set numbers corresponding to the eCCE are arranged in sequence and in a circular manner.

59. The terminal according to any one of claims 51 to 55, wherein the method further includes: numbering eREGs included in the first resource unit group; the mapping rule includes a first mapping rules, the first mapping rule includes:

60. The terminal according to any one of claims 51 to 59, characterized in that the resource unit set numbers corresponding to the eCCE or the eREG numbers are arranged in a circular order from small to large or from large to small.

61. The terminal according to claim 60, characterized in that,

If the resource unit set number corresponding to the eCCE or the eREG number has been arranged to the maximum, then the resource unit set number corresponding to the eCCE or the eREG number is arranged in a circular order from small to large; or

62. The terminal according to any one of claims 51 to 61, wherein the mapping rule further includes a second mapping rule,

In the second mapping rule, the order of the eREG numbers corresponding to the resource units corresponding to the sequentially numbered subcarriers in the same OFDM symbol in the first mapping rule is determined by the same OFDM symbol in the first mapping rule. The arrangement order of the eREG numbers corresponding to the resource units corresponding to the subcarriers whose numbers are sequentially arranged in the symbol is obtained by cyclic shifting.

63. A base station, characterized by including:

a determining unit configured to determine at least one physical resource block pair used to transmit a control channel, and determine the first resource unit group in the physical resource block pair to which the control channel is mapped according to the aggregation level of the control channel, so The physical resource block pair corresponds to a first number of first resource unit groups, the physical resource block pair includes N OFDM symbols, and the first resource unit group is mapped to the physical resource block according to S mapping rules. On the resource unit in the pair, the N is an integer greater than or equal to 1, and the S is a positive integer less than the N;

64. The base station according to claim 63, wherein the first resource unit group includes a resource unit set or eREG corresponding to the eCCE.

65. The base station according to claim 63 or 64, characterized in that,

The first resource unit group includes at least one resource unit in the physical resource block pair; or other resource units other than resource units mapped by f', f',, f', and/or other control channels. at least one resource unit in .

66. The base station according to any one of claims 63 to 65, wherein the mapping of the first resource unit group to the resource units in the physical resource block pair according to S mapping rules includes: :

67. The base station according to claim 66, characterized in that, the base station further includes: numbering the S mapping rules; and sequentially according to one of the S mapping rules, The first resource unit group is respectively mapped to the resource unit in the physical resource block pair, including: In the same OFDM symbol, in the order of the subcarrier numbers of the subcarriers and in the order of the symbol numbers of the OFDM symbols, the first resource unit group is sequentially assigned according to the order of the rule numbers of the S mapping rules. One mapping rule among the S mapping rules respectively maps the first resource unit group to the resource units in the physical resource block pair.

68. The base station according to claim 67, characterized in that the sequence of rule numbers of the S mapping rules includes:

The rule numbers of the S mapping rules are arranged from small to large; or

The rule numbers of the S mapping rules are arranged from large to small.

69. The base station according to any one of claims 63 to 68, characterized in that the mapping rules include at least one of the following rules:

70. A terminal, characterized in that it includes:

Determining unit, configured to determine at least one physical resource block pair used for transmitting the control channel, where the physical resource block pair corresponds to a first number of first resource unit groups, where the physical resource block pair includes N OFDM symbols, The first resource unit group is mapped to the resource unit in the physical resource block pair according to S mapping rules, where N is an integer greater than or equal to 1, and S is a positive number less than N. integer;

The receiving unit is configured to determine, according to the candidate aggregation level Lk of the control channel, the first resource unit group in the physical resource block pair determined by the determining unit to which the control channel is mapped, and determine the mapping rule according to the mapping rule. The resource units corresponding to the first resource unit group are detected, and the resource units corresponding to the first resource unit group are detected, and the control information carried by the control channel is obtained by parsing from the correctly detected first resource unit group; Among them, k is an integer, and Lk is any one of k candidate aggregation levels.

71. The terminal according to claim 70, wherein the first resource unit group includes a resource unit set or eREG corresponding to the eCCE.

72. The terminal according to claim 70 or 71, characterized in that,

The first resource unit group includes at least one resource unit in the physical resource block pair; or or - at _least one resource unit in other resource units other than resource units mapped by other control channels.

73. The terminal according to any one of claims 70 to 72, wherein the mapping of the first resource unit group to the resource units in the physical resource block pair according to S mapping rules includes: :

74. The terminal according to claim 73, wherein the method further includes: numbering the S mapping rules; and sequentially according to one of the S mapping rules, The first resource unit group is respectively mapped to the resource unit in the physical resource block pair, including:

75. The terminal according to claim 74, characterized in that the sequence of rule numbers of the S mapping rules includes:

The rule numbers of the S mapping rules are arranged from small to large; or

The rule numbers of the S mapping rules are arranged from large to small.

76. The terminal according to any one of claims 70 to 75, characterized in that the mapping rules include at least one of the following rules: