WO2014019146A1

WO2014019146A1 - Transmission method for control channel, base station, and terminal

Info

Publication number: WO2014019146A1
Application number: PCT/CN2012/079444
Authority: WO
Inventors: 刘建琴
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: CN103748849B; CN103748849A

Abstract

Provided are a transmission method for a control channel, a base station, and a terminal. In one aspect, in the embodiments of the present application, by determining at least one physical resource block pair for transmitting a control channel and then determining eREG information used for mapping the control channel in each physical resource block pair according to the aggregation level of the control channel and the eREG corresponding to each eCCE corresponding to the aggregation level, the serial numbers of the eREGs in each of the physical resource block pairs are cyclically arranged towards the resource element corresponding to the edge location in order, with the resource element corresponding to the central location of each of the physical resource block pairs as a starting serial number, and according to the determined eREG information, the control channel is mapped to the eREG corresponding to the determined eREG information, so as to enable the control information borne by the control channel to be sent at the location of the eREG for mapping the control channel.

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 is transmitted in an area in which a downlink data channel is transmitted in one subframe, and is frequency-divided with a Physical Downlink Shared Channel (PDSCH). The base station may send the ePDCCH on a physical resource block (PRB) with better channel conditions according to the channel status reported by the terminal. Wherein, in one subframe, the physical resource blocks of two time slots may be referred to as a resource block pair (RB pair), which is generally referred to as a physical resource block pair.

However, in the prior art, it is not given how to transmit or receive some control information such as ePDCCH bearer control information through an Enhanced Resource Element Group (eREG) in a physical resource block pair. Summary of the invention

Aspects of the present application provide a control channel transmission method and a base station and a terminal for implementing control information for transmitting or receiving some control channels, such as ePDCCH bearers, through an eREG in a physical resource block pair.

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;

Corresponding to each eCCE corresponding to the aggregation level of the control channel according to the aggregation level The eREG, the eREG information for mapping the control channel in each physical resource block pair, the number of the eREG in each physical resource block pair, and the resource corresponding to the central location of each physical resource block pair The unit is used as a starting number, and is sequentially arranged to the resource unit corresponding to the edge position. According to the determined eREG information, the control channel is mapped to the eREG corresponding to the determined eREG information;

The control information carried by the control channel is transmitted at a position where the eREG of the control channel is mapped.

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

Determining eREG information for mapping the control channel in each physical resource block pair according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk, where each physical resource block is aligned The number of the eREG, with the resource unit corresponding to the central position of each physical resource block pair as the starting number, sequentially circulates to the resource unit corresponding to the edge position |J; where k is an integer and Lk is k Any of the candidate aggregation levels;

And detecting, according to the determined eREG information, the eREG corresponding to the candidate eCCE corresponding to the Lk, and when the detection is correct, parsing the control information carried by the control channel from the detected correct eREG, when the detection is incorrect The eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels continues to be detected.

Determining eREG information for mapping the control channel in each physical resource block pair according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level, where each physical resource block is aligned The eREG is mapped to the first mapping area of each of the physical resource block pairs by using the first mapping rule, and mapped to the second mapping area of each of the physical resource block pairs by using the second mapping rule. The first mapping area is composed of resource units for transmitting data, and the second mapping area is composed of resource elements mapped by reference signals and/or other control channels of each physical resource block pair;

And mapping, according to the determined eREG information, the control channel to the eREG corresponding to the determined eREG information;

Transmitting control of the control channel on the location of the eREG mapping the control channel Information.

Determining eREG information for mapping the control channel in each physical resource block pair according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk, where each physical resource block is aligned The eREG is mapped to the first mapping area of each of the physical resource block pairs by using the first mapping rule, and mapped to the second mapping area of each of the physical resource block pairs by using the second mapping rule. eREG, the first mapping area is composed of resource units for transmitting data, and the second mapping area is composed of resource elements mapped by reference signals and/or other control channels of each physical resource block pair; wherein k is An integer, Lk is any one of k candidate aggregation levels;

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 each physical resource block pair according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level The eREG information used to map the control channel, the number of the eREG in each physical resource block pair, the resource unit corresponding to the central location of each physical resource block pair as a starting number, and the edge to the edge And the mapping unit is configured to map the control channel to the eREG corresponding to the determined eREG information according to the eREG information determined by the determining unit;

And a sending unit, configured to send control information carried by the control channel at a location where the mapping unit maps an eREG of the control channel.

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

a determining unit, determining at least one physical resource block pair for transmitting a control channel, and determining, according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk, determining, for each physical resource block pair Mapping the eREG information of the control channel, where the number of the eREG in each physical resource block pair corresponds to a central location of each physical resource block pair The resource unit is used as a starting number, and is sequentially arranged in a loop to the resource unit corresponding to the edge position; where k is an integer and Lk is any one of k candidate aggregation levels;

a detecting unit, configured to detect, according to the eREG information determined by the determining unit, an eREG corresponding to the candidate eCCE corresponding to the Lk, and when the detection is correct, parsing the control channel from the detected correct eREG The control information, when the detection is incorrect, continues to detect the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk among the k candidate aggregation levels.

a determining unit, configured to determine at least one physical resource block pair for transmitting a control channel, and determining each physical resource block pair according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level And eREG information for mapping the control channel, where the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and using the Mapping a second mapping rule to an eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is configured by each of the physical resource blocks a resource unit composed of a center reference signal and/or other control channel mapping;

a mapping unit, configured to map the control channel to the eREG corresponding to the determined eREG information according to the eREG information determined by the determining unit;

a determining unit, configured to determine at least one physical resource block pair for transmitting a control channel, and determining, according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk, determining each physical resource block pair And eREG information for mapping the control channel, where the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and using the Mapping a second mapping rule to an eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is configured by each of the physical resource blocks a resource unit composed of a center reference signal and/or other control channel mapping; wherein k is an integer and Lk is any one of k candidate aggregation levels; a detecting unit, configured to detect, according to the eREG information determined by the determining unit, an eREG corresponding to the candidate eCCE corresponding to the Lk, and when the detection is correct, parsing the control channel from the detected correct eREG The control information, when the detection is incorrect, continues to detect the e REG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk among the k candidate aggregation levels.

According to the foregoing technical solution, in an aspect, the embodiment of the present application determines at least one physical resource block pair for transmitting a control channel, and further, according to the aggregation level of the control channel, and the eREG corresponding to each eCCE corresponding to the aggregation level. Determining the eREG information for mapping the control channel in each physical resource block pair, the number of the eREG in each physical resource block pair, and the resource unit corresponding to the central location of each physical resource block pair As a starting number, the resource units corresponding to the edge positions are sequentially arranged, and the control channel is mapped to the eREG corresponding to the determined eREG information according to the determined eREG information, so that the mapping can be performed. At the location of the eREG of the control channel, the control information carried by the control channel is sent, so that control information for transmitting some control channels, such as ePDCCH bearers, through the eREG in the physical resource block pair is implemented.

According to the foregoing technical solution, in an aspect, the embodiment of the present application determines at least one physical resource block pair for transmitting a control channel, and further, according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk. Determining the eREG information for mapping the control channel in each physical resource block pair, the number of the eREG in each physical resource block pair, and the resource unit corresponding to the central location of each physical resource block pair As a starting number, the resource units corresponding to the edge positions are sequentially arranged cyclically; wherein k is an integer and Lk is any one of k candidate aggregation levels, so that the Lk can be corresponding according to the determined eREG information. The eREG corresponding to the candidate eCCE is detected, and when the detection is correct, the control information carried by the control channel is parsed from the detected correct eREG, and when the detection is incorrect, the k candidate aggregation levels are excluded. The eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than Lk continues to be detected, thereby realizing Some control channel reception control information carried by e.g. ePDCCH eREG physical resource block pair.

According to the foregoing technical solution, on the other hand, the embodiment of the present application determines at least one physical resource block pair for transmitting a control channel, and further, according to the aggregation level of the control channel, corresponding to each eCCE corresponding to the aggregation level. eREG, determine each physical resource block pair for mapping The eREG information of the control channel, the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and using the second mapping The rule is mapped to the eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is referenced by each of the physical resource blocks. And a resource unit of the signal and/or other control channel mapping, and mapping the control channel to the eREG corresponding to the determined eREG information according to the determined eREG information, so that the eREG of the control channel can be mapped The control information carried by the control channel is sent, so that control information for transmitting some control channels, such as ePDCCH bearers, through the eREG in the physical resource block pair is implemented.

According to the foregoing technical solution, on the other hand, the embodiment of the present application determines at least one physical resource block pair for transmitting a control channel, and further, according to the candidate aggregation level Lk of the control channel and the candidate eCCE corresponding to the Lk. eREG, determining eREG information for mapping the control channel in each physical resource block pair, where the eREG in each physical resource block pair is mapped to each physical resource block pair by using the first mapping rule a first mapping area, and an eREG mapped to the second mapping area of each of the physical resource block pairs by using the second mapping rule, where the first mapping area is composed of resource units that transmit data, and the second The mapping area is composed of resource elements mapped by the reference signal and/or other control channel of each physical resource block pair; wherein k is an integer, and Lk is any one of k candidate aggregation levels, so that the determination can be performed according to the determination The eREG information is used to detect the eREG corresponding to the candidate eCCE corresponding to the Lk, and when the detection is correct, the correct eREG is detected from the The control information carried by the control channel is obtained, and when the detection is incorrect, the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels is continuously detected, thereby implementing The control information of some control channels, such as ePDCCH bearers, is received by the eREG in the physical resource block pair. 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.

FIG. 1 is a schematic flowchart of a control channel transmission method according to an embodiment of the present application; 2 is a schematic diagram of a position of an eREG of a control channel mapping in a physical resource block pair in the embodiment corresponding to FIG. 1;

3 is a schematic diagram of another location of a control channel mapping eREG in a physical resource block pair in the embodiment corresponding to FIG. 1;

4 is a schematic diagram of another location of a control channel mapping eREG in a physical resource block pair in the embodiment corresponding to FIG. 1;

5 is a schematic diagram of another location of a control channel mapping eREG in a physical resource block pair in the embodiment corresponding to FIG. 1;

6 is a schematic diagram of another location of a control channel mapping eREG in a physical resource block pair in the embodiment corresponding to FIG. 1;

FIG. 7 is a schematic flowchart of a control channel transmission method according to another embodiment of the present disclosure; FIG. 8 is a schematic flowchart of a control channel transmission method according to another embodiment of the present disclosure; FIG. 10 is a schematic structural diagram of a base station according to another embodiment of the present disclosure;

FIG. 1 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of a base station according to another embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure. 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 context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate: A exists separately, and A exists at the same time. And B, there are three cases of B alone. 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. Access ( Orthogonal Frequency Division

Multiple Access, OFDMA) mode. 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.

A normal downlink subframe consists of two slots (slots), each slot has 7 or 6 OFDM symbols, and a normal downlink subframe contains a total of 14 OFDM symbols or 12 OFDM symbols. LTE

The 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. 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). A PDCCH can map J 1 , 2, 4 or 8 CCEs, that is, 1 , 2, 4 or 8 CCEs, corresponding to aggregation levels 1 , 2, 4, 8.

Physical Downlink Control Channel (PDCCH) based on precoding is introduced due to the introduction of multiple input multiple output (MIMO) and Coordinated Multiple Points (CoMP) technologies. ), that is, 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, which are defined as enhanced Control Channel Element (eCCE), and the UE needs 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, as defined by the aggregation level in the PDCCH. 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 .

101. Determine at least one physical resource block pair for transmitting a control channel.

And determining eREG information for mapping the control channel in each physical resource block pair according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level, where each physical resource block is determined. The number of the eREGs in the pair is the same as the resource unit corresponding to the center position of each physical resource block pair, and is sequentially arranged in the resource unit corresponding to the edge position.

103. Map, according to the determined eREG information, the control channel to an eREG corresponding to the determined eREG information.

104. Send, by using the location of the eREG of the control channel, control information carried by the control channel.

It should be noted that the execution body of 101~104 may be a base station.

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

Specifically, in 102, the determined eREG information may include an eREG number and an eREG identifier.

Optionally, in a possible implementation manner of this embodiment, each physical resource block pair is optionally, in a possible implementation manner of this embodiment, the center of each physical resource block pair The location may be a central location of other resource elements other than the PDCCH mapped resource element in each of the physical resource block pairs.

Optionally, in a possible implementation manner of this embodiment, each physical resource block pair The eREG in the middle may be composed of at least one resource unit of each of the physical resource block pairs.

Optionally, in a possible implementation manner of the embodiment, the eREG in each physical resource block pair may be included in the physical resource block pair except the reference signal and/or other control information. Reference signals may include, but are not limited to, common reference signals (Common

Reference Signal, CRS), DMRS, Channel Status Information Reference Signal (CSI-RS), and at least one of Positioning Reference Signal (PRS).

Optionally, in a possible implementation manner of this embodiment, in 102, the number of the eREG in each physical resource block pair may be a resource corresponding to a central location of each physical resource block pair. The unit is a starting number, and is spirally arranged in sequence to the resource unit corresponding to the edge position.

Specifically, it can be assumed that the center position of each physical resource block pair is (a, b), and the number of resource units in each physical resource block pair is M. The number of the M resource units may be a starting number of the resource unit corresponding to the center position of each physical resource block pair, and is sequentially spirally incremented to the resource unit corresponding to the edge position, and the clock ring is rotated counterclockwise. Arrange for example. It is assumed that each physical resource block pair contains N eREGs, and N is the number of eREGs in each physical resource block pair.

Then, first, the resource unit number of the M resource units included in the nth eREG can be determined according to (x-n)%N=0. Where n is the eREG number of the eREG in each unit resource unit block, and the value ranges from 1 to N; X is the resource unit number in the corresponding M resource units, ranging from 1 to M. The integer between.

Then, according to 1. Next +1. Right +2. Up +2. Left +3. Next +3. Right +4. On +4. Left + +k _nx =x-1 , determines the position of the nth eREG. Where n, n right, n up, and n left indicate that the resource unit corresponding to the center position is used as the starting position, and the resource unit corresponding to the edge position is sequentially spiraled in the counterclockwise direction, and the nx is satisfied. One of n, n, n, and n left determined by k of the above equation.

ϋ匕, ·;3⁄4 ^ 1 _{n T} +1 _n +2 _n +2 _n +3 _{n T} +3 _n +4 _n +4 _n +... +k _nx =x-1 of 1 _n and 1 _n right , 2 _n up, 2 _n left, 3 _n down, 3 _n right, 4 _n up, 4 _n and k _nx are summed in each direction, then the resource unit of the nth eREG offset from the center position can be determined , thereby determining the position of the nth eREG. The following is 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 central location may be a resource in a physical resource block pair. The central position of the unit, that is, the median value of the frequency domain and the time domain, is used to represent the sixth subcarrier in the following form, and the resource unit corresponding to the seventh OFDM symbol, that is, (6, 7). This form can be used to simplify the representation of the following positions.

Assuming that the number of eREGs in the physical resource block pair is 16, the resource unit number in the 168 resource units included in the nth eREG among the 16 eREGs may be determined according to (xn)%16=0. For example, according to the above method, it can be determined that the resource unit numbers X in the 168 resource units corresponding to the eREG 1 are 1, 17, 33, 49, 65, 81, 97, 113, 129, 145, and 161, respectively. Then, according to 1 _n down +1 _n right +2 _n on +2 _n left +3 _n down +3 _n right +4 _n on +4 _n left + ...... +k _nx =x-1 , OK The location corresponding to each of the resource units X described above.

For example, if x=1 is substituted into the above formula to determine the location of the resource unit numbered 1, the position of the resource unit with the number 1 is (6, 7) because there is no offset from the center position.

For another example, substituting x=17 into the above equation to determine the position of the resource unit numbered 17, 1 _{η τ} +1 _η right +2 _η ^+2 _η ^+3 _η τ+3 _η *+4 _η ^=17 -1 , the resource unit shifted downward relative to the center position is 4, the resource unit offset to the right relative to the center position is 4, the resource unit offset upward relative to the center position is 6, and is leftward relative to the center position The offset resource unit is 2, so it can be determined that the location of the resource unit numbered 17 is (4, 9).

For another example, χ=33 is substituted into the above equation to determine the position of the resource unit numbered 33, 1 _{η τ} +1 _η right +2 _η +2 _η left +3 _η lower +3 _η right +4 _η upper +4 _η left +5 _η lower +5 _η right +2 _η upper =33-1 , the resource unit shifted downward relative to the center position is 9, and the resource unit shifted to the right relative to the center position is 9, relative to the center The resource unit whose position is shifted upward is 8, and the resource unit that is shifted to the left with respect to the center position is 6, and therefore, the position of the resource unit numbered 33 can be determined as (7, 10).

By using the above method, the resource unit included in each of the 16 eREGs with respect to the central location offset may be determined, thereby determining the location of the resource unit included in each of the 16 eREGs, as shown in FIG. 2 Show. Figure 2 shows a pair of physical resource blocks consisting of 168 resource elements. Each small square represents a resource unit, and the number is 16 eREG numbers, which are used to indicate the eREG to which each resource unit belongs. The 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 resource unit that is included in each of the 16 eREGs with respect to the central location offset may be determined, thereby determining the location of the resource unit included in each of the 16 eREGs, as shown in FIG. 3, where the horizontal line shadow A resource unit that represents a DMRS map. Figure 3 shows a physical resource block pair consisting of 168 resource elements (where 24 resource elements containing DMRS mapping, the eREGs mapped at these locations and corresponding numbers are deducted), each small square The cell represents a resource unit, and the number is 16 eREG numbers, which are used to indicate the eREG 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 resource elements of the DMRS mapping are skipped when the eREG mapping is further considered, the resource unit corresponding to the selected central location is used as the starting number of each physical resource block. The cells are cyclically arranged, and the resource elements that encounter the DMRS mapping are skipped. Thereby, the location of the resource unit included in each of the 16 eREGs is determined, as shown in FIG. 4, wherein the horizontal line hatching indicates the resource unit of the DMRS mapping. Each small square represents a resource unit, where the number is 16 eREGs, which is used to indicate the eREG to which each resource unit belongs. The vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.

The following will be a physical resource block pair (containing a total of 168 resource units), including in the frequency domain

For example, the 12 subcarriers include 14 OFDM symbols in the time domain, and the central location thereof may be the central location of the resource elements other than the resource elements mapped by the PDCCH in the physical resource block pair. Similarly, it is still assumed that the number of eREGs in the pair of physical resource blocks is 16, and the resource unit included in each eREG of each of the 16 eREGs can be determined to be offset from the central location by using the above method, thereby determining each of the 16 eREGs. The location of the resource unit included in the eREG, where the mapped eREG and the corresponding number of the 24 resource unit locations of the DMRS mapping are deducted, as shown in FIG. 5, wherein the horizontal line hatching indicates the resource unit of the DMRS mapping, The line shading indicates the resource unit of the PDCCH mapping.

Optionally, if the 24 resource units of the DMRS mapping are skipped when the eREG mapping is further considered, that is, the resource unit corresponding to the central location of the resource unit other than the resource unit of the PDCCH mapping in the physical resource block pair is used as a start. The number is sequentially arranged to the resource unit corresponding to the edge position, and the resource unit that encounters the DMRS mapping is skipped. Thereby, the location of the resource unit included in each of the 16 eREGs is determined, as shown in FIG. 6, wherein the horizontal line hatching indicates the resource unit of the DMRS mapping, and the shaded hatching indicates the resource unit of the PDCCH mapping. Each small square represents a resource unit, and the number is 16 eREG numbers, which are used to represent each resource list. The eREG to which the element belongs, the vertical direction represents the frequency domain resource, and the horizontal direction represents the time domain resource.

It can be seen from FIG. 2 to FIG. 6 that the technical solution of this embodiment has the following advantages: as many eREGs as possible can be distributed on each OFDM symbol;

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

The size of each eREG is approximately equal.

Then, if the centralized control channel transmission also uses eREG as the basic transmission unit, it can be ensured that the eCCE formed by each eREG combination also satisfies the above three rules.

It can be understood that if it is a clockwise cyclic arrangement, the equation can be replaced by 1 _n right +1 _n lower +2 _n left +2 _n +3 _n right +3 _n lower +4 _n left + 4. On + + k _nx = x-1 , the other processes are similar and will not be described here.

Optionally, in a possible implementation manner of this embodiment, in 102, the number of the eREG in each physical resource block pair may be a resource corresponding to a central location of each physical resource block pair. The unit is used as the starting number, and is cyclically sequenced to the resource unit corresponding to the edge position.

In this embodiment, each physical resource block pair is determined by determining an at least one physical resource block pair for transmitting a control channel, and further, according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level. The eREG information used to map the control channel, the number of the eREG in each physical resource block pair, with the resource unit corresponding to the central location of each physical resource block pair as the starting number, sequentially The resource units corresponding to the edge locations are cyclically arranged, and the control channel is mapped to the eREG corresponding to the determined eREG information according to the determined eREG information, so that the location of the eREG of the control channel is mapped. The control information carried by the control channel is sent, so that control information of some control channels, such as ePDCCH bearers, is sent by the eREG in the physical resource block pair.

FIG. 7 is a schematic flowchart of a control channel transmission method according to another embodiment of the present application, as shown in FIG.

7 is shown.

701. Determine at least one physical resource block pair for transmitting a control channel.

702. Determine, according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk, eREG information for mapping the control channel in each physical resource block pair, where each physical resource block is used. The number of the eREG in the pair, with each physical resource block pair The resource unit corresponding to the central location is used as the starting number, and is sequentially arranged in sequence to the resource unit corresponding to the edge position; wherein k is an integer and Lk is any one of k candidate aggregation levels.

703. Detect, according to the determined eREG information, the eREG corresponding to the candidate eCCE corresponding to the Lk, and when the detection is correct, parse the control information carried by the control channel from the detected correct eREG, when detecting If it is incorrect, the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels continues to be detected.

It should be noted that the execution body of 701~703 may be a terminal.

Specifically, when the detection is incorrect, the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels is continuously detected until the detection is correct, or all the candidates are selected. The eREG corresponding to the candidate eCCE corresponding to the aggregation level is detected.

Specifically, in 702, the determined eREG information may include an eREG number and an eREG identifier.

Optionally, in a possible implementation manner of this embodiment, the eREG in each physical resource block pair may be composed of at least one resource unit in each of the physical resource block pairs.

Optionally, in a possible implementation manner of the embodiment, the eREG in each physical resource block pair may be included in the physical resource block pair except the reference signal and/or other control information. 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. Optionally, in a possible implementation manner of this embodiment, in 702, the number of the eREG in each physical resource block pair may be a resource corresponding to a central location of each physical resource block pair. The unit is a starting number, and is spirally arranged in sequence to the resource unit corresponding to the edge position.

Optionally, in a possible implementation manner of this embodiment, in 702, the number of the eREG in each physical resource block pair may be a resource corresponding to a central location of each physical resource block pair. The unit is a starting number, and is cyclically arranged in sequence to the resource unit corresponding to the edge position.

For a detailed description, refer to the related description in the corresponding embodiment of FIG. 1, and details are not described herein again. In this embodiment, each physical resource block pair is determined by determining at least one physical resource block pair for transmitting a control channel, and further, according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk. The eREG information used to map the control channel, the number of the eREG in each physical resource block pair, with the resource unit corresponding to the central location of each physical resource block pair as the starting number, sequentially The resource unit corresponding to the edge position is cyclically arranged; wherein, k is an integer, and Lk is any one of the k candidate aggregation levels, so that the eREG corresponding to the candidate eCCE corresponding to the Lk can be detected according to the determined eREG information. When the detection is correct, the control information carried by the control channel is parsed from the detected correct eREG, and when the detection is incorrect, candidate aggregations other than the Lk among the k candidate aggregation levels are detected. The eREG corresponding to the candidate eCCE corresponding to the level continues to be detected, so that the eREG is received in the physical resource block pair. EPDCCH channel such as control information bearer.

FIG. 8 is a schematic flowchart of a control channel transmission method according to another embodiment of the present application, as shown in FIG. 8.

801. Determine at least one physical resource block pair for transmitting a control channel.

802. Determine, according to an aggregation level of the control channel, an eREG corresponding to each eCCE corresponding to the aggregation level, eREG information used to map the control channel in each physical resource block pair, where each physical resource block is The eREG of the pair is mapped to the first mapping area of each of the physical resource block pairs by using the first mapping rule, and mapped to the second mapping of each of the physical resource block pairs by using the second mapping rule An eREG of the area, where the first mapping area is composed of resource units that transmit data, and the second mapping area is centered by the reference signal of each physical resource block and/ Or a resource unit composed of other control channel mappings.

803. Map, according to the determined eREG information, the control channel to the eREG corresponding to the determined eREG information.

804. Send, by using the location of the eREG of the control channel, control information carried by the control channel.

It should be noted that the execution body of 801~804 may be a base station.

Specifically, in 802, the determined eREG information may include an eREG number and an eREG identifier.

Optionally, in a possible implementation manner of this embodiment, the first mapping rule and the second mapping rule may be the same, or may be different, which is not limited in this embodiment.

In this embodiment, each physical resource block pair is determined by determining an at least one physical resource block pair for transmitting a control channel, and further, according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level. The eREG information used to map the control channel, where the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and The second mapping rule is mapped to the eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is configured by each of the physical resources. Composing the resource unit of the block reference signal and/or other control channel mapping, and mapping the control channel to the eREG corresponding to the determined eREG information according to the determined eREG information, so as to enable mapping Transmitting the control information carried by the control channel at the location of the eREG of the control channel, thereby implementing eR in the physical resource block pair The EG sends some control channels such as control information carried by the ePDCCH.

FIG. 9 is a schematic flowchart of a control channel transmission method according to another embodiment of the present application, as shown in FIG.

9 is shown.

901. Determine at least one physical resource block pair for transmitting a control channel.

902. Determine, according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk, eREG information for mapping the control channel in each physical resource block pair, where each physical resource block is used. The eREG of the pair is mapped to the using the first mapping rule a first mapping area of each physical resource block pair, and an eREG mapped to the second mapping area of each of the physical resource block pairs by using the second mapping rule, where the first mapping area is a resource unit that transmits data The second mapping area is composed of resource elements mapped by the reference signal and/or other control channel of each physical resource block pair; wherein k is an integer and Lk is any one of k candidate aggregation levels.

903. The eREG corresponding to the candidate eCCE corresponding to the Lk is detected according to the determined eREG information, and when the detection is correct, the control information carried by the control channel is parsed from the detected correct eREG, when detecting If it is incorrect, the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels continues to be detected.

It should be noted that the execution body of 901~903 may be a terminal.

Specifically, in 902, the determined eREG information may include an eREG number and an eREG identifier.

In this embodiment, each physical resource block pair is determined by determining at least one physical resource block pair for transmitting a control channel, and further, according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk. The eREG information used to map the control channel, where the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and The second mapping rule is mapped to the eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is configured by each of the physical resources. a resource unit composed of a block centering reference signal and/or other control channel mapping; wherein k is an integer and Lk is any one of k candidate aggregation levels, so that the Lk can be corresponding according to the determined eREG information. The eREG corresponding to the candidate eCCE is detected, and when the detection is correct, the control information carried by the control channel is parsed from the detected correct eREG, when detecting If the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels is detected, the eREG is continuously received by the eREG in the physical resource block pair. The channel is, for example, control information carried by the ePDCCH.

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. 10 is a schematic structural diagram of a base station according to another embodiment of the present disclosure. As shown in FIG. 10, the base station in this embodiment may include a determining unit 1001, a mapping unit 1002, and a sending unit 1003. The determining unit 1001 is configured to determine at least one physical resource block pair for transmitting a control channel, and determine each physical resource block according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level. The eREG information used to map the control channel, the number of the eREG in each physical resource block pair, and the resource unit corresponding to the central location of each physical resource block pair as a starting number, in sequence The resource unit corresponding to the edge position is cyclically arranged; the mapping unit 1002 is configured to map the control channel to the eREG corresponding to the determined eREG information according to the eREG information determined by the determining unit 1001; the sending unit 1003, And transmitting, by the mapping unit 1002, the control information carried by the control signal i at a position where the mapping unit 1002 maps the eREG of the control channel.

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

Physical Downlink Control Channel, ePDCCH ).

Specifically, the eREG information determined by the determining unit 1001 may include an eREG number and an eREG identifier.

Optionally, in a possible implementation manner of this embodiment, the eREG in each physical resource block pair may be composed of at least one resource unit in each of the physical resource block pairs. Optionally, in a possible implementation manner of the embodiment, the eREG in each physical resource block pair may be included in the physical resource block pair except the reference signal and/or other control information. 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.

Optionally, in a possible implementation manner of the embodiment, the number of the eREG in each physical resource block pair may start with a resource unit corresponding to a central location of each physical resource block pair. The number is spirally arranged in sequence to the resource unit corresponding to the edge position.

Optionally, in a possible implementation manner of this embodiment, if the number of the eREG in each physical resource block pair is used, the resource unit corresponding to the central location of each physical resource block pair may be used. The initial number is spirally arranged in sequence to the resource unit corresponding to the edge position. Accordingly, the mapping unit 1002 can further be based on (xn). /. N=0, determining the resource unit number of the M resource units included in the nth eREG; wherein, M is the number of resource units in each physical resource block pair. Where n is the eREG number of the eREG in each physical resource block pair, and the value ranges from 1 to N, where N is the number of eREGs in each physical resource block pair; x is the resource unit number, which is the value The range is an integer between 1 and M; then, according to 1 _{n T} +1 _n ^+2 _ni +2 _n left +3 _n down +3 _n right +4 _n on +4 +... +k _nx =x- 1 or 1 _n right +1 _n lower +2 _n left +2 _n upper +3 _n right +3 _n lower +4 _n left +4 _n upper + +k _nx =x-1 , determining the position of the nth eREG; Where n, n, n, and n are the resource elements corresponding to the center position as the starting position, and the resource units corresponding to the edge positions are sequentially spiraled counterclockwise or clockwise. a unit, nx is one of n, n, n, and n left determined by k satisfying the above equation; and will satisfy the lower + right + 2 _n + 2 _n left + 3 _n + 3 _n right +4 _n on +4. Left at + ...... + k _nx = x-1 the right or 1 _n +1 _{_n} +2 _n +2 _n on the left and right +3 _n +3 _{_n} +4 _n left +4 + ...... + k _nx = x- 1 _{n n} , 1 _n right, 2 _n up, 2 _n left, 3 _n down, 3 _n right, 4 _n up, 4 _n left and k _nx are summed in each direction to determine the nth eREG relative A resource unit offset at a central location to determine the location of the nth eREG.

Optionally, in a possible implementation manner of the embodiment, the number of the eREG in each physical resource block pair may start with a resource unit corresponding to a central location of each physical resource block pair. The number is cyclically arranged in sequence to the resource unit corresponding to the edge position. In this embodiment, the determining, by the determining unit, the at least one physical resource block pair for transmitting the control channel, and determining each physics according to the aggregation level of the control channel and the eREG corresponding to each eCCE corresponding to the aggregation level. The resource block pair is used to map the eREG information of the control channel, and the number of the eREG in each of the physical resource block pairs is a starting number corresponding to a resource unit corresponding to a central location of each physical resource block pair. The resource units corresponding to the edge positions are sequentially arranged, and the mapping unit is mapped to the eREG corresponding to the determined eREG information according to the eREG information determined by the determining unit, so that the sending unit can be located at the The mapping unit maps the location of the eREG of the control channel, and sends control information carried by the control channel, so that control information for transmitting some control channels, such as ePDCCH, by the eREG in the physical resource block pair is implemented.

FIG. 11 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure. As shown in FIG. 11, the terminal in this embodiment may include a determining unit 1101 and a detecting unit 1102. The determining unit 1 101 determines at least one physical resource block pair for transmitting a control channel, and determines each physical resource block according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk. The eREG information used to map the control channel, the number of the eREG in each physical resource block pair, the resource unit corresponding to the central location of each physical resource block pair as a starting number, in sequence The resource unit corresponding to the edge position is cyclically arranged; wherein k is an integer and Lk is any one of k candidate aggregation levels; and detecting unit 1102 is configured to: according to the eREG information determined by the determining unit 1101, to the Lk The eREG corresponding to the candidate eCCE is detected, and when the detection is correct, the control information carried by the control channel is parsed from the detected eREG, and when the detection is incorrect, the k candidate aggregation levels are excluded. The eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk continues to be detected.

Specifically, the eREG information determined by the determining unit 1101 may include an eREG number and an eREG identifier.

Optionally, in a possible implementation manner of this embodiment, each physical resource block pair is optionally, in a possible implementation manner of this embodiment, the center of each physical resource block pair The location may be a resource unit of the PDCCH mapping in each of the physical resource block pairs The central location of other resource units outside.

Optionally, in a possible implementation manner of the embodiment, the eREG in each physical resource block pair may be included in the physical resource block pair except the reference signal and/or other control information. 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.

Optionally, in a possible implementation manner of this embodiment, if the number of the eREG in each physical resource block pair is used, the resource unit corresponding to the central location of each physical resource block pair may be used. The initial number is spirally arranged in sequence to the resource unit corresponding to the edge position. Correspondingly, as shown in FIG. 12, the terminal provided in this embodiment may further include a mapping unit 1201, configured to determine, according to (xn)%N=0, a resource unit number of the M resource units included in the nth eREG; Where M is the number of resource elements in each physical resource block pair. Where n is the eREG number of the eREG in each physical resource block pair, and the value ranges from 1 to N, where N is the number of eREGs in each physical resource block pair; X is the resource unit number, The value ranges from 1 to M; then, according to 1 _{n τ} + 1 _n ^+2 _η ^+2 _η ^+3 _{η τ} +3 _η *+4 _η ^+4 _ηleft +... +k _Nx =x-1 or 1 _n +1 _{n T} +2 _n +2 _n +3 _n +3 _{n T} +4 _n +4 _n +... +k _nx =x-1 , ^ position of the nth eREG Where n, n right, n up, and n left represent the resource unit corresponding to the center position as a starting position, and the resource unit arrangement unit correspondingly to the edge position in a spiral counterclockwise or clockwise direction a resource unit, nx is one of n, n, n, and n left determined by k satisfying the above equation; and will satisfy 1 _n , +1 _n, right + 2 _n , +2 _n left, +3 _n Right at +3 _n +4 _n +4 _n on the left of the left +2 _n _{+ ...... + k nx = x-} 1 or 1 _n +1 _{_n} +2 _n the right on the right +3 _n +3 _{_n} +4 _n Left +4 _n on +■■■■■■ +k _nx =x-1 of 1 _n down, 1 _n right, 2 _n up, 2 _n , 3 _n down, 3 _n right, 4 _n up, 4 _ni and k _nx in each direction are summed, Fixed with respect to the n-th resource element eREG center position shifted to Determine the location of the nth eREG.

Optionally, in a possible implementation manner of the embodiment, the number of the eREG in each physical resource block pair may start with a resource unit corresponding to a central location of each physical resource block pair. The number is cyclically arranged in sequence to the resource unit corresponding to the edge position.

In this embodiment, the terminal determines, by the determining unit, at least one physical resource block pair for transmitting the control channel, and further determines each physics according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk. The resource block pair is used to map the eREG information of the control channel, and the number of the eREG in each of the physical resource block pairs is a starting number corresponding to a resource unit corresponding to a central location of each physical resource block pair. The resource units corresponding to the edge positions are sequentially arranged in a loop; wherein k is an integer and Lk is any one of k candidate aggregation levels, so that the detecting unit can correspond to the Lk according to the eREG information determined by the determining unit. The eREG corresponding to the candidate eCCE is detected, and when the detection is correct, the control information carried by the control channel is parsed from the detected correct eREG, and when the detection is incorrect, the k candidate aggregation levels are excluded. The eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than Lk continues to be detected, thereby realizing Some, for example, channel control information received ePDCCH carried by a physical resource block pair eREG.

FIG. 13 is a schematic structural diagram of a base station according to another embodiment of the present disclosure. As shown in FIG. 13, the base station in this embodiment may include a determining unit 1301, a mapping unit 1302, and a sending unit 1303. The determining unit 1301 is configured to determine at least one physical resource block pair for transmitting a control channel, and determine each physical resource block according to an aggregation level of the control channel and an eREG corresponding to each eCCE corresponding to the aggregation level. The eREG information used to map the control channel, the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and utilized The second mapping rule is mapped to an eREG of the second mapping area of each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is used by each physical entity And a resource unit that is configured by the resource block to the reference signal and/or the other control channel; the mapping unit 1302 is configured to map the control channel to the determined eREG information according to the eREG information determined by the determining unit 1301 a sending unit 1303, configured to send the control at a location where the mapping unit 1302 maps an eREG of the control channel Channel carries control information.

The control channel may specifically be an enhanced physical downlink control channel (Enhanced) Physical Downlink Control Channel, ePDCCH ).

Specifically, the eREG information determined by the determining unit 1301 may include an eREG number and an eREG identifier.

In this embodiment, the determining, by the determining unit, the at least one physical resource block pair for transmitting the control channel, and determining each physics according to the aggregation level of the control channel and the eREG corresponding to each eCCE corresponding to the aggregation level. The eREG information is used to map the eReG information of the control channel, and the eREG in each physical resource block pair is mapped to the first mapping area of each of the physical resource block pairs by using the first mapping rule. And mapping, by the second mapping rule, to an eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is configured by each And mapping, by the mapping unit, the resource unit of the reference signal and/or other control channel mapping, and the eREG information determined by the mapping unit according to the determining unit, mapping the control channel to the eREG corresponding to the determined eREG information Up, enabling the transmitting unit to send the control signal at a location where the mapping unit maps the eREG of the control channel The control information carried by the channel, so that the control information of some control channels, such as ePDCCH, is transmitted through the eREG in the physical resource block pair.

FIG. 14 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure. As shown in FIG. 14, the terminal in this embodiment may include a determining unit 1401 and a detecting unit 1402. The determining unit 1401 is configured to determine at least one physical resource block pair for transmitting a control channel, and determine each physical resource according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk. An eREG information for mapping the control channel, where the eREG in each physical resource block pair is mapped to the first mapping area in each of the physical resource block pairs by using the first mapping rule, and Mapping to the eREG of the second mapping area in each of the physical resource block pairs by using the second mapping rule, where the first mapping area is composed of resource units that transmit data, and the second mapping area is formed by each The physical resource block is configured by the resource unit of the reference signal and/or the other control channel mapping; wherein, k is an integer, and Lk is any one of k candidate aggregation levels; and the detecting unit 1402 is configured to determine, according to the determining unit 1401 The eREG information is used to detect the eREG corresponding to the candidate eCCE corresponding to the Lk, and when the detection is correct, the control is obtained by parsing the correct eREG from the detection Bearer control channel information, when the detection is incorrect, in addition to the levels of the other candidate Lk polymerization eCCE candidate corresponding to the level corresponding to eREG then detects the candidate k polymerization. Specifically, the eREG information determined by the determining unit 1401 may include an eREG number and an eREG identifier.

In this embodiment, the terminal determines, by the determining unit, at least one physical resource block pair for transmitting the control channel, and further determines each physics according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk. The eREG information is used to map the eReG information of the control channel, and the eREG in each physical resource block pair is mapped to the first mapping area of each of the physical resource block pairs by using the first mapping rule. And mapping, by the second mapping rule, to an eREG of the second mapping area in each of the physical resource block pairs, where the first mapping area is composed of resource units that transmit data, and the second mapping area is configured by each Each of the physical resource block centering reference signals and/or other control channel mapped resource units; wherein k is an integer and Lk is any one of k candidate aggregation levels, such that the detecting unit can determine the eREG according to the determining unit The information, the eREG corresponding to the candidate eCCE corresponding to the Lk is detected, and when the detection is correct, the correct eREG is detected from the The control information carried by the control channel is analyzed, and when the detection is incorrect, the eREG corresponding to the candidate eCCE corresponding to the candidate aggregation level other than the Lk in the k candidate aggregation levels is continuously detected, thereby implementing The control information of some control channels, such as ePDCCH bearers, is received by the eREG in the physical resource block pair.

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

According to the aggregation level of the control channel and the eREG corresponding to each eCCE corresponding to the aggregation level, eREG information used to map the control channel in each physical resource block pair is determined, and in each physical resource block pair The number of the eREG, taking the resource unit corresponding to the center position of each physical resource block pair as the starting number, and cyclically arranging it to the resource unit corresponding to the edge position; According to the determined eREG information, the control unit is The channel is mapped to the eREG corresponding to the determined eREG information;

At the position of the eREG mapping the control channel, the control information carried by the control channel is sent.

2. The method according to claim 1, characterized in that, the number of the eREG in each physical resource block pair is based on the resource unit corresponding to the center position of each physical resource block pair as the starting number, The resource units corresponding to the edge positions are arranged in a circular manner, including:

The number of the eREG in each physical resource block pair takes the resource unit corresponding to the center position of each physical resource block pair as the starting number, and is arranged in a spiral manner to the resource unit corresponding to the edge position in sequence; or

The number of the eREG in each physical resource block pair takes the resource unit corresponding to the center position of each physical resource block pair as the starting number, and is arranged in a circular manner to the resource unit corresponding to the edge position.

3. The method according to claim 1 or 2, characterized in that the center position of each physical resource block pair includes:

The center position of the resource unit in each physical resource block pair; or

The center position of other resource units in each physical resource block pair except the resource unit mapped by the PDCCH.

4. The method according to any one of claims 1 to 3, wherein the eREG in each physical resource block pair is composed of at least one resource unit in each physical resource block pair; or

The eREG in each physical resource block pair is composed of at least one of other resource units in each physical resource block pair except for resource units mapped by reference signals and/or other control channels. Resource unit composition.

5. The method according to any one of claims 1 to 4, characterized in that if the number of the eREG in each physical resource block pair is corresponding to the center position of each physical resource block pair The resource unit is used as the starting number, and is arranged in a spiral manner to the resource unit corresponding to the edge position; before mapping the control channel to the eREG corresponding to the determined eREG information according to the determined eREG information , Also includes:

According to (x-n)%N=0, determine the resource unit number among the M resource units included in the n-th eREG; where M is the number of resource units in each physical resource block pair. Among them, n is the eREG number of the eREG in each physical resource block pair, and the value range is an integer between 1 and N. N is the number of eREGs in each physical resource block pair; X is the resource unit number, which is The value range is an integer between 1 and M;

According to 1 _n down + 1 _n right + 2 _n up + 2 _n left + 3 _n down + 3 _n right + 4 _n up + 4. Left+... +k _nx =x-1 or 1 _nright +1 _ndown +2 _ni +2 _ni +3 _n *+3 _{n T} +4 _ni +4 _ni +... +k _nx = x-1, determine the position of the n-th eREG; where n lower, n right, n upper and n left represent the resource unit corresponding to the center position as the starting position, in a spiral shape in a counterclockwise or clockwise direction Arrange unit resource units sequentially to the resource units corresponding to the edge positions, nx is one of n lower, n right, n upper and n left determined by k that satisfies the above equation;

It will satisfy 1 _{n T} +1 _n *+2 _ni +2 _ni +3 _{n T} +3 _n *+4 _n i+4 _ni +…… +k _nx =x-1 or 1 _n right +1 _n down +2 _nLeft +2 _nUp +3 _n +3 _nDown +4 _nLeft +4. Up +... +k _nx = 1 n down, 1 n right, 2 n up, 2 _n left, 3 _n _τ , 3 _η right, 4 _eta up, 4 _n and k _nx in each direction of x-1 Sum up and determine the resource unit offset of the n-th eREG relative to the center position to determine the position of the n-th eREG.

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

According to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk, the eREG information used to map the control channel in each physical resource block pair is determined, and in each physical resource block pair The number of the eREG, taking the resource unit corresponding to the center position of each physical resource block pair as the starting number, and sequentially cyclically arranging the resource unit corresponding to the edge position |J; where k is an integer, Lk is k any of the candidate aggregation levels;

According to the determined eREG information, the eREG corresponding to the candidate eCCE corresponding to the Lk is detected. When the detection is correct, the control information is obtained by parsing the correctly detected eREG. When the detection is incorrect, the eREGs corresponding to the candidate eCCEs corresponding to other candidate aggregation levels except the Lk among the k candidate aggregation levels are continued to be detected.

7. The method according to claim 6, wherein the number of the eREG in each physical resource block pair is based on the resource unit corresponding to the center position of each physical resource block pair as the starting number, The resource units corresponding to the edge positions are arranged in a circular manner, including:

8. The method according to claim 6 or 7, characterized in that the center position of each physical resource block pair includes:

9. The method according to any one of claims 6 to 8, wherein the eREG in each physical resource block pair is composed of at least one resource unit in each physical resource block pair; or

The eREG in each physical resource block pair is composed of at least one resource unit among other resource units in each physical resource block pair except for resource units mapped by reference signals and/or other control channels.

10. The method according to any one of claims 6 to 9, characterized in that if the number of the eREG in each physical resource block pair is corresponding to the center position of each physical resource block pair The resource unit is used as the starting number, and is arranged in a spiral manner to the resource unit corresponding to the edge position; before mapping the control channel to the eREG corresponding to the determined eREG information according to the determined eREG information , Also includes:

According to (xn)%N=0, determine the resource unit numbers of the M resource units included in the n-th eREG; where M is the number of resource units in each physical resource block pair. Among them, n is the eREG number of the eREG in each physical resource block pair, and the value range is an integer between 1 and N. N is The number of eREGs in each physical resource block pair; X is the resource unit number, and the value range is an integer between 1 and M;

According to 1 _n τ+1 _n ^+2 _n i+2 _n ^+3 _n r+3 _n *+4 _n ^+4 _n i+... +k _nx =x-1 or 1 _n right+1 _n down+ 2 _ni +2 _ni +3 _n *+3n T+4n i+4 _ni + ...... +k _nx =x-1 , determine the position of the πth eREG; among them, n down, n right, n Up and n left indicate that the resource unit corresponding to the center position is used as the starting position, and the unit resource units are arranged in a spiral counterclockwise or clockwise direction toward the resource units corresponding to the edge positions. nx is the value that satisfies the above equation. One of n down, n right, n up and n left determined by k;

It will satisfy 1 n T ⁺ 1 n *+2n i+2n i+3 _{η τ} +3 eta right + 4 _n left +... +k _nx =x-1 or 1 _n right + _{1 n} _lower + 2 _n left + 2 _n up + 3 _n right + 3 _n down + 4 _n left + 4. Up +... +k _nx =x-1 of 1 _n down, 1 _n right, 2 _{n up, 2 n left, 3 n down, 3 n right, 4 n up, 4 n} _and _k _nx _in _each _direction Sum up and determine the resource unit offset of the n-th eREG relative to the center position to determine the position of the n-th eREG.

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

According to the aggregation level of the control channel and the eREG corresponding to each eCCE corresponding to the aggregation level, eREG information used to map the control channel in each physical resource block pair is determined, and in each physical resource block pair The eREG is mapped to the first mapping area in each physical resource block pair using the first mapping rule, and is mapped to the second mapping area in each physical resource block pair using the second mapping rule. eREG, the first mapping area is composed of resource units for transmitting data, and the second mapping area is composed of resource units mapped to reference signals and/or other control channels in each physical resource block pair;

According to the determined eREG information, map the control channel to the eREG corresponding to the determined eREG information;

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

According to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk, the eREG information used to map the control channel in each physical resource block pair is determined, and in each physical resource block pair eREG is mapped to each of the a first mapping area in a physical resource block pair, and an eREG mapped to a second mapping area in each physical resource block pair using the second mapping rule, where the first mapping area is composed of resource units for transmitting data, The second mapping area is composed of resource units mapped to reference signals and/or other control channels in each physical resource block pair; where k is an integer, and Lk is any one of k candidate aggregation levels;

According to the determined eREG information, the eREG corresponding to the candidate eCCE corresponding to the Lk is detected. When the detection is correct, the control information carried by the control channel is parsed from the correctly detected eREG. When the detection is incorrect , continue to detect eREGs corresponding to candidate eCCEs corresponding to other candidate aggregation levels except Lk among the k candidate aggregation levels.

13. A base station, characterized by including:

Determining unit, configured to determine at least one physical resource block pair used for transmitting the control channel, and determine the number of physical resource block pairs in each physical resource block pair according to the aggregation level of the control channel and the eREG corresponding to each eCCE corresponding to the aggregation level. The eREG information used to map the control channel, the eREG number in each physical resource block pair, with the resource unit corresponding to the center position of each physical resource block pair as the starting number, sequentially to the edge The resource units corresponding to the positions are arranged cyclically; a mapping unit, configured to map the control channel to the eREG corresponding to the determined eREG information according to the eREG information determined by the determining unit;

A sending unit, configured to send the control information carried by the control channel at the position where the mapping unit maps the eREG of the control channel.

14. The base station according to claim 13, wherein the number of the eREG in each physical resource block pair is based on the resource unit corresponding to the center position of each physical resource block pair as the starting number, The resource units corresponding to the edge positions are arranged in a circular manner, including:

15. The base station according to claim 13 or 14, characterized in that the center position of each physical resource block pair includes: The center position of the resource unit in each physical resource block pair; or

16. The base station according to any one of claims 13 to 15, wherein the eREG in each physical resource block pair is composed of at least one resource unit in each physical resource block pair; or

17. The base station according to any one of claims 13 to 16, characterized in that if the number of the eREG in each physical resource block pair is corresponding to the center position of each physical resource block pair The resource unit is used as the starting number, and is arranged in a spiral manner to the resource unit corresponding to the edge position; the mapping unit is also used to

According to (x-n)%N=0, determine the resource unit numbers of the M resource units included in the n-th eREG; where M is the number of resource units in each physical resource block pair. Among them, n is the eREG number of the eREG in each physical resource block pair, and the value range is an integer between 1 and N. N is the number of eREGs in each physical resource block pair; X is the resource unit number, which is The value range is an integer between 1 and M;

According to 1 _n down + 1 _n right + 2 _n up + 2 _n left + 3 _n down + 3 _n right + 4 _n up + 4. Left+... +k _nx =x-1 or 1 _nright +1 _ndown +2. Left +2. Up+3 _n *+3 _{n T} +4 _ni +4 _ni + ...... +k _nx =x-1 , determine the position of the nth eREG; among them, n down, n right, n up and n The left indicates that the resource unit corresponding to the center position is used as the starting position, and the unit resource units are arranged in a spiral counterclockwise or clockwise direction toward the resource unit corresponding to the edge position. nx is determined by k that satisfies the above equation. One of n bottom, n right, n top and n left;

^It satisfies I n T+ ln +Zn +Zn +S _{n τ} +3 _ηright + upper+ left+... +k _nx =X-1 or 1 _nright +1 _nlower +2 _nleft +2 _nupper + 3 _n +3 _n down +4 _n left +4. up +... +k _nx =x-1 of 1 n down, 1 n right, 2 n up, 2 _n left, 3 _n down, 3 _n;fr , 4 _n up, 4 _n and k _nx in each direction Sum up the above to determine the resource unit offset of the n-th eREG relative to the center position to determine the position of the n-th eREG.

18. A terminal, characterized in that it includes:

Determining unit, determining at least one physical resource block pair used for transmitting the control channel, and according to The candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk determine the eREG information used to map the control channel in each physical resource block pair, and the eREG information in each physical resource block pair is determined. The eREG number takes the resource unit corresponding to the center position of each physical resource block pair as the starting number, and is sequentially arranged cyclically to the resource unit corresponding to the edge position; where k is an integer, and Lk is k candidate aggregation levels. any of;

The detection unit is configured to detect the eREG corresponding to the candidate eCCE corresponding to the Lk according to the eREG information determined by the determination unit. When the detection is correct, parse the eREG carried by the control channel from the correctly detected eREG. Control information: when the detection is incorrect, continue to detect e REGs corresponding to candidate eCCEs corresponding to other candidate aggregation levels except the Lk among the k candidate aggregation levels.

19. The terminal according to claim 18, wherein the number of the eREG in each physical resource block pair is based on the resource unit corresponding to the center position of each physical resource block pair as the starting number, The resource units corresponding to the edge positions are arranged in a circular manner, including:

20. The terminal according to claim 18 or 19, characterized in that the center position of each physical resource block pair includes:

21. The terminal according to any one of claims 18 to 20, wherein the eREG in each physical resource block pair is composed of at least one resource unit in each physical resource block pair; or

22. The terminal according to any one of claims 18 to 21, characterized in that if the number of the eREG in each physical resource block pair is corresponding to the center position of each physical resource block pair As the starting number, the resource unit is arranged in a spiral manner to the resource unit corresponding to the edge position; the base station also includes a mapping unit for

According to 1 _n τ+1 _n *+2 _n +2 _n ^+3 _n r+3 _n *+4 _n i+4 _n i+... +k _nx =x-1 or 1 _n right+1 _n down

+2 _ni +2 _ni +3 _n *+3n T+4n i+4 _ni + ...... +k _nx =x-1 , determine the position of the πth eREG; where n is down, n is to the right, n up and n left indicate that the resource unit corresponding to the center position is used as the starting position, and the unit resource unit is arranged in a spiral counterclockwise or clockwise direction toward the resource unit corresponding to the edge position. nx satisfies the above equation. One of n lower, n right, n upper and n left determined by k;

1 _{n T} +1 _n +2 _n +2 _n +3 _{n T} +3 _n +4 _n +4 _n +…… +k _nx =x-1 ^ 1 _nright +1 _ndown +2 _n +2 _n + 3 _n right + 3 _n lower + 4 _n + 4 _n +■■■■■■ +k _nx = 1 _n lower, 1 _n right, 2 n upper, 2 _n left, 3 _n lower, 3 _n of x- ₁ Right, _4n up, _4n and _knx are summed in each direction to determine the resource unit offset of the nth eREG relative to the center position to determine the position of the nth eREG.

23. A base station, characterized by including:

Determining unit, configured to determine at least one physical resource block pair used for transmitting the control channel, and determine the number of physical resource block pairs in each physical resource block pair according to the aggregation level of the control channel and the eREG corresponding to each eCCE corresponding to the aggregation level. eREG information used to map the control channel, the eREG in each physical resource block pair is mapped to the first mapping area in each physical resource block pair using the first mapping rule, and using the The second mapping rule is mapped to the eREG of the second mapping area in each physical resource block pair, the first mapping area is composed of resource units for transmitting data, and the second mapping area is composed of each physical resource block. Composition of resource units mapped to reference signals and/or other control channels;

A mapping unit, configured to map the control channel to the eREG corresponding to the determined eREG information according to the eREG information determined by the determining unit; A sending unit, configured to send the control information carried by the control channel at the position where the mapping unit maps the eREG of the control channel.

24. A terminal, characterized by including:

Determining unit, configured to determine at least one physical resource block pair used for transmitting the control channel, and determine the number of physical resource block pairs in each physical resource block pair according to the candidate aggregation level Lk of the control channel and the eREG corresponding to the candidate eCCE corresponding to the Lk eREG information used to map the control channel, the eREG in each physical resource block pair is mapped to the first mapping area in each physical resource block pair using the first mapping rule, and using the The second mapping rule is mapped to the eREG of the second mapping area in each physical resource block pair, the first mapping area is composed of resource units for transmitting data, and the second mapping area is composed of each physical resource block. It consists of resource units mapped to reference signals and/or other control channels; where k is an integer, and Lk is any one of k candidate aggregation levels;

The detection unit is configured to detect the eREG corresponding to the candidate eCCE corresponding to the Lk according to the eREG information determined by the determination unit. When the detection is correct, parse the eREG carried by the control channel from the correctly detected eREG. Control information: when the detection is incorrect, continue to detect eREGs corresponding to candidate eCCEs corresponding to other candidate aggregation levels except the Lk among the k candidate aggregation levels.