CN104247544B

CN104247544B - Sending method, method of reseptance and the user equipment of control channel and base station

Info

Publication number: CN104247544B
Application number: CN201380005360.4A
Authority: CN
Inventors: 高驰; 吴强; 李超君
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-04-08
Filing date: 2013-04-08
Publication date: 2018-10-12
Anticipated expiration: 2033-04-08
Also published as: WO2014166045A1; CN104247544A

Abstract

The embodiment of the present invention provides a kind of sending method of control channel, method of reseptance and user equipment and base station, the sending method of wherein control channel include：Public search space is mapped to according to the first mapping ruler in downlink physical resource, and dedicated search space is mapped to according to the second mapping ruler in the downlink physical resource, wherein, the downlink physical resource for mapping the public search space and the downlink physical resource for mapping the dedicated search space are not overlapped；The control information of the control information and dedicated search space carrying of the public search space carrying is sent in the downlink physical resource.Technical solution provided in an embodiment of the present invention can reduce the probability for occurring to receive mistake on a user device, be conducive to user equipment and obtain more complete, accurate common control information and dedicated control information.

Description

Sending method, method of reseptance and the user equipment of control channel and base station

Technical field

The present invention relates to field of communication technology more particularly to a kind of sending method of control channel, method of reseptance, Yi Jiyong Family equipment and base station.

Background technology

Long term evolution (Long Term Evolution, hereinafter referred to as：LTE) in the downlink transfer of communication system, evolution Type base station (evolved Node B, hereinafter referred to as：ENB it) will be sent for the user equipment being each dispatched to according to the result of scheduling One Physical Downlink Shared Channel (Physical Downlink Shared Channel, hereinafter referred to as：PDSCH) and corresponding Physical Downlink Control Channel (Physical Downlink Control Channel, hereinafter referred to as：PDCCH), wherein PDSCH carries the data that eNB is sent to user equipment, and PDCCH carries it and corresponds to the scheduling information of PDSCH, scheduling letter Breath is mainly used to indicate the transport format information of corresponding PDSCH, including the distribution information of resource, the size of transmission block, Modulation coding scheme, transmission rank and precoding matrix information etc..PDCCH and PDSCH is time division multiplexing in a subframe.It is right In generic cyclic prefix, each subframe includes two time slots, has 7 orthogonal frequency division multiplexing (Orthogonal in each time slot Frequency Division Multiplexing, hereinafter referred to as：OFDM) symbol, wherein PDCCH is in first time slot It is transmitted in preceding n OFDM symbol, n can take any of 1,2,3,4 equivalences, and be dynamically changeable, remaining OFDM Symbol is then used for transmitting PDSCH.

In the further evolution of LTE communication system, due to needing to support multi-user installation multiple-input and multiple-output (Multiple Input Multiple Output, hereinafter referred to as：MIMO coordination) and between multiple cell improves system Performance, so as to cause the increase of scheduling user's set number simultaneously；But in one subframe of the capacity limit of existing PDCCH Can scheduling user's set number number.Based on this, existing PDCCH is enhanced, i.e., is drawn in original PDSCH region A part of resource is separated to transmit the PDCCH (E-PDCCH) of enhancing, the capacity of PDCCH can be thus improved or adjust simultaneously Spend the number of user equipment.The new domains enhancing control channel E-PDCCH can be used for transmitting two control signaling search spaces： Public search space (common search space) and dedicated search space (UE specific search space).It is public Search space carries the common control information for needing to be sent to all users in cell altogether.Dedicated search space carries specially It is sent to the dedicated control information of some user.Each user is required for detection public search space to obtain the public control of cell Information processed, while dedicated search space is detected, to determine whether the dedicated control information for being sent to oneself.

In the prior art, on public search space and dedicated search space reflection to physical resource, it is possible in physics On be overlapping.The special control of the common control information and the carrying of dedicated search space of the public search space carrying of lap Information processed may be obscured, cause user equipment can not differentiate public search space carrying common control information or The dedicated control information that dedicated search space is carried, and finally make reception error rate of the user equipment to the control channel It is high.

Invention content

An embodiment of the present invention provides a kind of sending method of control channel, method of reseptance and user equipment and base station, To reduce the probability for occurring to receive mistake on a user device, it is conducive to user equipment and obtains more complete, accurately public control Information processed and dedicated control information.

The first aspect provides a kind of sending method of control channel, including：

Public search space is mapped to according to the first mapping ruler in downlink physical resource, and dedicated search space is pressed It is mapped in the downlink physical resource according to the second mapping ruler, wherein map the downlink physical money of the public search space Source and the downlink physical resource for mapping the dedicated search space are not overlapped；

The control information of the public search space carrying and the dedicated search are sent in the downlink physical resource The control information of space carrying

In the first in conjunction with the first aspect is possible, when the public search space is mapped to two of a subframe Gap, two time slots of the dedicated search space reflection a to subframe.

With reference to first aspect or the first it is possible second may in, it is described to reflect public search space according to first It penetrates rule and is mapped in downlink physical resource and include：

The public search space is mapped on one or more of first antenna port set antenna port；

Described be mapped in the dedicated search space in downlink physical resource according to the second mapping ruler include：

It will be on one or more antenna ports of the dedicated search space reflection to the second antenna port set, wherein It sends the antenna port of the control information of the public search space carrying and sends the control of the dedicated search space carrying The antenna port of information is different.

With reference to first aspect or the first it is possible the third may in, it is described to reflect public search space according to first It penetrates rule and is mapped in downlink physical resource and include：

The public search space is mapped to according to the first mapping order on downlink physical running time-frequency resource；

The dedicated search space is mapped to according to the second mapping order on downlink physical running time-frequency resource.

It is described to map public search space according to the first mapping order in possible 4th kind in conjunction with the third possible Include on to downlink physical running time-frequency resource：

On the downlink physical running time-frequency resource, the N number of information for the control information that the public search space is carried accords with Number according in the serial number Sequential Mapping to N number of physical time-frequency resource from small to large of physical time-frequency resource, when the physics The unit of frequency resource is one of the following：Resource element, enhancing control channel unit and enhancing channel element set；

Described be mapped in dedicated search space on downlink physical running time-frequency resource according to the first mapping order include：

On the downlink physical running time-frequency resource, M information of the control information of dedicated search space carrying is accorded with Number according in the serial number Sequential Mapping from big to small to the M physical time-frequency resources of physical time-frequency resource

The second aspect provides a kind of method of reseptance of control channel, including：

Receive the down channel of carrying public search space and dedicated search space；

The public search space is obtained on physical resource where the first mapping ruler from the down channel to hold The control information of load, and according to acquisition dedicated search space on the physical resource where the second mapping ruler from the down channel The control information of carrying, wherein where the downlink physical resource and the dedicated search space where the public search space Downlink physical resource be not overlapped.

In the first in conjunction with the second aspect is possible, when above-mentioned public search space occupies two of a subframe Gap, two time slots of one subframe of dedicated search space hold.

Combine the second aspect or it is above-mentioned the first it is possible second may in, it is above-mentioned according to the first mapping ruler from The control information that the public search space carries is obtained on physical resource where the down channel includes：

Physics money where the down channel received from one or more of first antenna port set antenna port The control information of the public search space carrying is obtained in source；

It is described to obtain the carrying of dedicated search space from the physical resource where down channel according to the second mapping ruler Controlling information includes：

Physics money where the down channel received from one or more of the second antenna port set antenna port The control information of the dedicated search space carrying is obtained in source, wherein send the control letter of the public search space carrying The antenna port of breath is different with the antenna port of control information of dedicated search space carrying is sent

Combine the second aspect or it is above-mentioned the first it is possible the third may in, it is described according to the first mapping ruler from The control information that the public search space carries is obtained on physical resource where the down channel includes：

According to obtaining described public search on the downlink physical running time-frequency resource where the first mapping order from the down channel The control information of rope space carrying；

Dedicated search space is obtained on the physical resource according to where the second mapping ruler from the down channel to hold The control information of load includes：

According to obtaining described special search on the downlink physical running time-frequency resource where the second mapping order from the down channel The control information of rope space carrying.

Combine above-mentioned the third possible 4th kind may in, it is described according to the first mapping order from the down channel The control information that public search space carries is obtained on the downlink physical running time-frequency resource at place includes：

On the downlink physical running time-frequency resource where the down channel, according to physical time-frequency resource serial number from small to large Sequence obtained from N number of physical time-frequency resource public search space carrying control information, wherein N is positive integer, the object The unit of reason running time-frequency resource is one of the following：Resource element, enhancing control channel unit and enhancing channel element set；

Special search is obtained on the downlink physical running time-frequency resource according to where the second mapping order from the down channel Rope space carrying control information include：

On the downlink physical running time-frequency resource where the down channel, according to physical time-frequency resource serial number from big to small Sequence obtained from M physical time-frequency resource dedicated search space carrying control information, wherein M is positive integer.

In terms of third, a kind of sending device of control channel is provided, including：

Resource mapping module, for public search space to be mapped to downlink physical resource according to the first mapping ruler, And dedicated search space is mapped to according to the second mapping ruler in the downlink physical resource, wherein mapping is described public to search The downlink physical resource in rope space and the downlink physical resource for mapping the dedicated search space are not overlapped；

Sending module, control information for sending public search space carrying in the downlink physical resource and The control information of the dedicated search space carrying.

In the first in terms of combining third is possible, above-mentioned resource mapping module is specifically used for public search space Two time slots of a subframe are mapped to, by two time slots of the dedicated search space reflection a to subframe.

In in conjunction with third aspect or the first above-mentioned possible second of possibility, above-mentioned resource mapping module includes：

First resource map unit, one for being mapped to the public search space in the set of first antenna port Or on mutiple antennas port；

Secondary resource map unit, for by one of the dedicated search space reflection to the second antenna port set or On mutiple antennas port, wherein send the antenna port of the control information of the public search space carrying and send described special With the antenna port difference for the control information that search space carries.

In in conjunction with third aspect or the first above-mentioned the third possible possibility, above-mentioned resource mapping module includes：

Information resources map unit, for the public search space to be mapped to downlink physical according to the first mapping order On running time-frequency resource；

4th resource mapping unit, for the dedicated search space to be mapped to downlink physical according to the first mapping order On running time-frequency resource.

In possible in conjunction with above-mentioned the third possible 4th kind, above-mentioned information resources map unit is specifically used for described On downlink physical running time-frequency resource, the N number of information symbol for the control information that the public search space is carried is according to physical time-frequency In the Sequential Mapping of the serial number of resource from small to large to N number of physical time-frequency resource, the unit of the physical time-frequency resource is Following one：Resource element, enhancing control channel unit and enhancing channel element set；The 4th resource mapping unit tool Body is used in the downlink physical running time-frequency resource, by M information symbol of the control information of dedicated search space carrying According in the serial number Sequential Mapping from big to small to the M resource elements of physical time-frequency resource.

4th aspect, provides a kind of base station, includes the sending device of above-mentioned control channel.

5th aspect, provides a kind of reception device of control channel, including：

Receiving module, the down physical channel for receiving carrying public search space and dedicated search space；

Acquisition module, for according to obtaining the public affairs on the physical resource where the first mapping ruler from the down channel The control information of search space carrying altogether, and according to second mapping ruler from the physical resource where the down channel Obtain the control information of dedicated search space carrying.

In the first in conjunction with the 5th aspect is possible, when above-mentioned public search space is mapped to two of a subframe Gap, two time slots of one subframe of dedicated search space reflection.

In the first possible second in terms of combining the 5th aspect or the 5th is possible, above-mentioned acquisition module packet It includes：

First acquisition unit, the downlink for being received from one or more of first antenna port set antenna port The control information of the public search space carrying is obtained in physical resource where channel；

Second acquisition unit, the downlink for being received from one or more of the second antenna port set antenna port The control information of the dedicated search space carrying is obtained in physical resource where channel, wherein send the common search The control information of space carrying is different with the antenna port of control information of dedicated search space carrying is sent.

In the third possible possibility in conjunction with the first of the 5th aspect or the 5th aspect, above-mentioned acquisition module packet It includes：

Third acquiring unit, for according to the downlink physical running time-frequency resource where the first mapping order from the down channel The upper control information for obtaining the public search space carrying；

4th acquiring unit, for according to the downlink physical running time-frequency resource where the second mapping order from the down channel The upper control information for obtaining the dedicated search space carrying.

In possible 4th kind in conjunction with the third possible, above-mentioned third acquiring unit is specifically used in the down channel On the downlink physical running time-frequency resource at place, provided from N number of physical time-frequency according to the serial number sequence from small to large of physical time-frequency resource The control information of public search space carrying is obtained in source, wherein N is positive integer, the unit of the physical time-frequency resource be with It is one of lower：Resource element, enhancing control channel unit and enhancing channel element set, the 4th acquiring unit are specifically used for On the downlink physical running time-frequency resource where the down channel, according to physical time-frequency resource serial number sequence from big to small from The control information of dedicated search space carrying is obtained in M physical time-frequency resource, wherein M is positive integer.

6th aspect, provides a kind of user equipment, includes the reception device of above-mentioned control channel.

7th aspect, provides a kind of base station, including：

Processor, for public search space to be mapped to downlink physical resource according to the first mapping ruler, and will be special It is mapped in the downlink physical resource according to the second mapping ruler with search space, wherein map the public search space Downlink physical resource and map the downlink physical resource in the dedicated search space and be not overlapped；

Transmitter, the control information for sending the public search space carrying in the downlink physical resource and institute State the control information of dedicated search space carrying.

In the first in conjunction with the 7th aspect is possible, when above-mentioned public search space is mapped to two of a subframe Gap, two time slots of the dedicated search space reflection a to subframe.

In in conjunction with the 7th aspect or the first above-mentioned possible second of possibility, above-mentioned processor is specifically used for institute Public search space is stated to be mapped on one or more of first antenna port set antenna port；By dedicated search sky Between be mapped on one or more antenna ports of the second antenna port set, wherein send public search space carrying Control information antenna port it is different with the antenna port of control information for sending dedicated search space carrying.

In in conjunction with the 7th aspect or the first above-mentioned the third possible possibility, above-mentioned processor is specifically used for institute Public search space is stated to be mapped on downlink physical running time-frequency resource according to the first mapping order；By the dedicated search space according to Second mapping order is mapped on downlink physical running time-frequency resource.

In possible 4th kind in conjunction with the third possible, above-mentioned processor is specifically used for providing in the downlink physical time-frequency On source, N number of information symbol of the control information that the public search space is carried is according to the serial number of physical time-frequency resource from small Into big Sequential Mapping to N number of physical time-frequency resource, the unit of the physical time-frequency resource is one of the following：Resource element Element, enhancing control channel unit and enhancing channel element set, and be used in the downlink physical running time-frequency resource, by institute M information symbol of the control information of dedicated search space carrying is stated according to the serial number sequence from big to small of physical time-frequency resource It is mapped in the M physical time-frequency resources

8th aspect, provides a kind of user equipment, including：

Receiver, the down channel for receiving carrying public search space and dedicated search space；

Processor, for described public according to being obtained on the physical resource where the first mapping ruler from the down channel The control information of search space carrying, and it is special according to being obtained on the physical resource where the second mapping ruler from the down channel The control information carried with search space, wherein downlink physical resource where the public search space and described special search Downlink physical resource where rope space is not overlapped.

In the first in conjunction with the 8th aspect is possible, when above-mentioned public search space is mapped to two of a subframe Gap, two time slots of the dedicated search space reflection a to subframe.

Combine the 8th aspect or it is above-mentioned the first possible second may in, above-mentioned processor is specifically used for from the Described in being obtained in physical resource where the down channel received on one or more of one antenna port set antenna port The control information of public search space carrying, and received from one or more of the second antenna port set antenna port Down channel where physical resource in obtain the control information of dedicated search space carrying, wherein send the public affairs The antenna of the antenna port of the control information of search space carrying and the control information of the transmission dedicated search space carrying altogether Port is different.

Combine the 8th aspect or it is above-mentioned the first it is possible the third may in, above-mentioned processor be specifically used for according to The public search space carrying is obtained on downlink physical running time-frequency resource where first mapping order from the down channel Information is controlled, and described special according to being obtained on the downlink physical running time-frequency resource where the second mapping order from the down channel The control information carried with search space.

In possible 4th kind in conjunction with the third possible, the processor is specifically used for where the down channel On downlink physical running time-frequency resource, obtained from N number of physical time-frequency resource according to the serial number sequence from small to large of physical time-frequency resource The control information for taking public search space to carry, wherein N is positive integer, and the unit of the physical time-frequency resource is one of the following： Resource element, enhancing control channel unit and enhancing channel element set, and in the downlink physical where the down channel On running time-frequency resource, special search is obtained from M physical time-frequency resource according to the serial number sequence from big to small of physical time-frequency resource The control information of rope space carrying, wherein M is positive integer.

The technical solution that the above embodiment of the present invention provides, wherein sending common control information and special control letter in base station When breath, the public search space is mapped to according to the first mapping ruler in downlink physical resource, and by the dedicated search Space is mapped to according to the second mapping ruler in the downlink physical resource, i.e., is mapped according to different mapping rulers, is used Family equipment is received according to corresponding mapping ruler receiving, and can be reduced and be occurred to receive the general of mistake on a user device Rate is conducive to user equipment and obtains more complete, accurate common control information and dedicated control information.

Description of the drawings

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair Some bright embodiments for those of ordinary skill in the art without having to pay creative labor, can be with Obtain other attached drawings according to these attached drawings.

Fig. 1 is the flow diagram of the sending method embodiment of control channel in the embodiment of the present invention；

Fig. 2 is the flow diagram of the method for reseptance embodiment of control channel in the embodiment of the present invention；

Fig. 3 is the structural schematic diagram of the sending device of control channel in the embodiment of the present invention；

Fig. 4 is the structural schematic diagram one of resource mapping module in embodiment illustrated in fig. 3；

Fig. 5 is the structural schematic diagram two of resource mapping module in embodiment illustrated in fig. 3；

Fig. 6 is the structural schematic diagram of the reception device of control channel in the embodiment of the present invention；

Fig. 7 is the structural schematic diagram one of acquisition module in embodiment illustrated in fig. 6；

Fig. 8 is the structural schematic diagram two of acquisition module in embodiment illustrated in fig. 6；

Fig. 9 is the structural schematic diagram of base station in the embodiment of the present invention；

Figure 10 is the structural schematic diagram of user equipment in the embodiment of the present invention.

Specific implementation mode

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.

For the control information of the control information and the carrying of dedicated search space of the carrying of public search space in the prior art It may obscure, the defect for causing user equipment that can not differentiate, an embodiment of the present invention provides a kind of hairs of control channel Delivery method, Fig. 1 are the flow diagram of the sending method embodiment of control channel in the embodiment of the present invention, and this method can be by base It stands realization, as shown in Figure 1, including following step：

Public search space is mapped to according to the first mapping ruler in downlink physical resource, and is searched special by step 101 Rope space is mapped to according to the second mapping ruler in the downlink physical resource, wherein is mapped under the public search space Row physical resource and the downlink physical resource for mapping the dedicated search space are not overlapped；

Step 102 sends the public search space and the dedicated search space is held in the downlink physical resource The control information of load.

The above embodiment of the present invention provide control channel sending method, wherein base station send common control information and When dedicated control information, the public search space is mapped to according to the first mapping ruler in downlink physical resource, and by institute Dedicated search space is stated to be mapped in the downlink physical resource according to the second mapping ruler, i.e., according to different mapping rulers into Row mapping, user equipment are received receiving according to corresponding mapping ruler, can reduce and connect on a user device The probability of mistake is received, is conducive to user equipment and obtains more complete, accurate common control information and dedicated control information, it is above-mentioned First mapping ruler and the second mapping ruler can be pre-configured with onto base station and user equipment.Technical scheme of the present invention can be with It is applied in LTE system, base station therein can be evolved base station.

In the above embodiment of the present invention, when above-mentioned public search space can be mapped to two of a subframe Gap, two time slots of dedicated search space reflection a to subframe.

Specifically, above-mentioned downlink physical resource can be antenna port or physical time-frequency resource, and in above-described embodiment Public search space and dedicated search space are mapped to according to different mapping rulers in downlink physical resource may include Various ways.

A kind of mode is for public search space and dedicated search space reflection to different antenna ports, for example, above-mentioned Public search space is mapped to according to the first mapping ruler in downlink physical resource and includes：

The public search space is mapped on one or more of first antenna port set antenna port, i.e., will The control information of public search space carrying is transmitted on the antenna port that first antenna port set includes；

Above-mentioned be mapped in the dedicated search space in downlink physical resource according to the second mapping ruler include：

It will be on one or more antenna ports of the dedicated search space reflection to the second antenna port set, wherein It sends the antenna port of the control information of the public search space carrying and sends the control of the dedicated search space carrying The antenna port of information is different, i.e., transmits the control information that dedicated search space carries in the second antenna port set.

The antenna port that first antenna port set and/or the second antenna port set include includes：Antenna end One or more of mouth 107, antenna port 108, antenna port 109 and antenna port 110.For example, first antenna port collection It closes and/or the second antenna port set can be following one：{ antenna port 107, antenna port 109 }, antenna port 108, Antenna port 110 }, { antenna port 107, antenna port 110 }, { antenna port 108, antenna port 109 }, { antenna port 107, antenna port 108 } and { antenna port 109, antenna port 110 }.

The present embodiment supports MIMO technique, wherein first antenna port set and the second antenna port set rule The antenna port for the control information that can send public search space carrying is determined, and the carrying of dedicated search space can be sent Control information antenna port, two gather include antenna port can it is identical, part is identical or entirely different, But the control information of public search space carrying is sent simultaneously and sends the day of the control information of the dedicated search space carrying Line end mouth differs.

Also a kind of mode be the mapping order of public search space and dedicated search space on physical time-frequency resource not Together, specifically, above-mentioned be mapped to public search space in downlink physical resource according to the first mapping ruler includes：

Specifically, it is above-mentioned according to the first mapping order mapping public search space can be the downlink physical time-frequency provide On source, N number of information symbol of the control information that the public search space is carried is according to the serial number of physical time-frequency resource from small Into big Sequential Mapping to N number of physical time-frequency resource, the unit of the physical time-frequency resource is one of the following：Resource element Element, enhancing control channel unit and enhancing channel element set.And it can be with according to the second mapping order mapping public search space Be on the downlink physical running time-frequency resource, by the dedicated search space carrying control information M information symbol according to In the Sequential Mapping of the serial number of physical time-frequency resource from big to small to the M physical time-frequency resources.

For example, the unit of above-mentioned downlink physical running time-frequency resource can be resource element (Resource Element, below Referred to as：RE), then the N number of information symbol for the control information that the public search space carries can be mapped in sequence N number of In the resource element, i.e., according to the Sequential Mapping from 1,2...N；And

M information symbol of the control information of dedicated search space carrying is mapped to the M moneys according to backward In source element, i.e., according to the Sequential Mapping from M, M-1...1.

In another example the unit of above-mentioned downlink physical running time-frequency resource can be enhancing control channel unit (Enhanced Control Channel Element, hereinafter referred to as：ECCE), then the control information that the public search space can be carried It is mapped in N number of enhancing control channel unit, i.e., according to the 1st ECCE is first mapped to, re-maps to the 2nd in sequence ECCE ... it is mapped to the Sequential Mapping of n-th ECCE；And

The control information of dedicated search space carrying is mapped to the M enhancing control channel unit according to backward In, i.e., according to n-th ECCE is mapped to, it is mapped to N-1 ECCE ..., is mapped to the Sequential Mapping of the 1st ECCE.

In another example the unit of above-mentioned downlink physical running time-frequency resource can be enhancing channel element set (Enhanced Resource Element Group, hereinafter referred to as：EREG), then the control information that the public search space can be carried It is mapped in N number of control enhancing channel element set, i.e., according to the 1st EREG is first mapped to, re-maps to the 2nd in sequence A EREG ... it is mapped to the Sequential Mapping of n-th EREG；And

The control information of dedicated search space carrying is mapped to the M enhancing channel element set according to backward In, i.e., according to n-th EREG is mapped to, it is mapped to N-1 EREG ..., is mapped to the Sequential Mapping of the 1st EREG.

In three above example, the first mapping order is Sequential Mapping, and the second mapping order maps for backward.Similarly, Can also be that first mapping order maps for backward, the second mapping order is Sequential Mapping.

By the above-mentioned means, public search space and dedicated search space reflection can be made to the mode of downlink physical resource Difference, user equipment when receiving, according to different rules can be properly received public search space carrying control information or The control information of dedicated search space carrying, the type that two kinds of control information will not occur are obscured.Above-mentioned mapping ruler can be with It is preset in user equipment and base station, in base station according to above-mentioned mapping ruler by public search space and dedicated search space It is mapped in downlink physical resource, and after being sent to user equipment, user equipment is easy accurate according to above-mentioned mapping ruler Get the control information of the control information and the carrying of dedicated search space of public search space carrying.

The embodiment of the present invention additionally provides a kind of method of reseptance of control channel.Fig. 2 is that letter is controlled in the embodiment of the present invention The flow diagram of the method for reseptance embodiment in road, this method can be realized by UE, as shown in Fig. 2, including following step：

Step 201, the down channel for receiving carrying public search space and dedicated search space；

Step 202, according to obtaining described public search on the physical resource where the first mapping ruler from the down channel The control information of rope space carrying, and it is special according to being obtained on the physical resource where the second mapping ruler from the down channel The control information of search space carrying, wherein the downlink physical resource where the public search space and the dedicated search Downlink physical resource where space is not overlapped.

The above embodiment of the present invention provide control channel method of reseptance, wherein receive carrying public search space and After the down channel in dedicated search space, since public search space and dedicated search space are respectively according to different mapping rulers Onto downlink physical resource, therefore, user equipment can be parsed according to corresponding mapping ruler, can be reduced and be set in user The standby upper probability for occurring to receive mistake is conducive to the control that user equipment obtains more complete, accurate public search space carrying The control information of information and the carrying of dedicated search space, the first above-mentioned mapping ruler and the second mapping ruler can be pre-configured with Onto base station and user equipment.

In the above embodiment of the present invention, the public search space may map to two time slots of a subframe, described Dedicated search space may map to two time slots of a subframe.

Further, in the above embodiment of the present invention, mapping ruler therein may include various ways, a kind of wherein Under mode, the common control information is obtained on the above-mentioned physical resource according to where the first mapping ruler from the down channel Including：

Physics money where the down channel received from one or more of the second antenna port set antenna port The control information of the dedicated search space carrying is obtained in source, wherein send the control letter of the public search space carrying The antenna port of breath is different with the antenna port of control information of dedicated search space carrying is sent.

Under another way, obtained on the above-mentioned physical resource according to where the first mapping ruler from the down channel The control information of public search space carrying includes：

It is empty according to dedicated search is obtained on the downlink physical running time-frequency resource where the second mapping order from the down channel Between the control information that carries.

Specifically, being obtained on the above-mentioned downlink physical running time-frequency resource according to where the first mapping order from the down channel Public search space carrying control information include：

For example, above-mentioned downlink physical running time-frequency resource unit be resource element when, it is above-mentioned according to the first mapping order from The control information that public search space carries is obtained on downlink physical running time-frequency resource where down channel includes：

The control information of public search space carrying is obtained from N number of resource element in sequence；

It is described to obtain special control search from the downlink physical running time-frequency resource where down channel according to the second mapping order Space carrying control information include：

The control information of dedicated search space carrying is obtained from M resource element according to backward.

Or, the unit of above-mentioned downlink physical running time-frequency resource is enhancing control channel unit, it is described according to the first mapping order The control information that public search space carries is obtained from the downlink physical running time-frequency resource where down channel includes：

The control information that public search space carries is obtained from N number of enhancing control channel unit in sequence；

It is described to obtain dedicated search sky from the downlink physical running time-frequency resource where down channel according to the second mapping order Between the control information that carries include：

The control information of dedicated search space carrying is obtained from M enhancing control channel unit according to backward.

Or, the unit of above-mentioned downlink physical running time-frequency resource is enhancing channel element set, it is described according to the first mapping order The control information that public search space carries is obtained from the downlink physical running time-frequency resource where down channel includes：

The control information that public search space carries is obtained from N number of enhancing channel element set in sequence；

The control information of dedicated search space carrying is obtained from M enhancing channel element set according to backward.The implementation The specific implementation of example may refer to the corresponding embodiment of sending method.

Corresponding with embodiment shown in FIG. 1, the present invention also provides a kind of sending devices of control channel, which can Can also be of base station itself to be a part for base station.Fig. 3 is the knot of the sending device of control channel in the embodiment of the present invention Structure schematic diagram, as shown in figure 3, the device includes resource mapping module 11 and sending module 12, wherein resource mapping module 11 is used In the public search space is mapped to according to the first mapping ruler in downlink physical resource, and by the dedicated search space It is mapped in the downlink physical resource according to the second mapping ruler, wherein map the downlink physical of the public search space Resource and the downlink physical resource for mapping the dedicated search space are not overlapped；Sending module 12 is used to provide in the downlink physical The control information of the control information and dedicated search space carrying of the public search space carrying is sent on source.

The sending device for the control channel that the above embodiment of the present invention provides is held wherein sending public search space in base station When the control information of load and the control information of dedicated search space carrying, by the public search space according to the first mapping ruler It is mapped in downlink physical resource, and the dedicated search space is mapped to downlink physical resource according to the second mapping ruler On, i.e., it is mapped according to different mapping rulers, user equipment is parsed according to corresponding mapping ruler receiving, energy It is enough to reduce the probability for occurring to receive mistake on a user device, it is conducive to user equipment and obtains more complete, accurate common search The control information of the control information and the carrying of dedicated search space of space carrying, the first above-mentioned mapping ruler and the second mapping rule It can then be pre-configured with onto base station and user equipment.

In the above embodiment of the present invention, above-mentioned resource mapping module is specifically used for the public search space being mapped to Two time slots of one subframe, two time slots of the dedicated search space reflection a to subframe.

As shown in Figure 4, in the above embodiment of the present invention, resource mapping module 11 therein includes：

First resource map unit 111, for the public search space to be mapped in the set of first antenna port On one or more antenna ports；

Secondary resource map unit 112 is used for the dedicated search space reflection to the one of the second antenna port set On a or mutiple antennas port, wherein send the antenna port of the control information of the public search space carrying and send institute The antenna port for stating the control information of dedicated search space carrying is different.

Either, as shown in Figure 5, the resource mapping module 11 in the above embodiment of the present invention includes：

Information resources map unit 113, for the public search space to be mapped to downlink according to the first mapping order On physical time-frequency resource；

4th resource mapping unit 114, for the dedicated search space to be mapped to downlink according to the second mapping order On physical time-frequency resource.

In the above embodiment of the present invention, the information resources map unit therein is specifically used in the downlink physical In frequency resource, N number of information symbol of the control information that the public search space is carried according to physical time-frequency resource serial number In Sequential Mapping from small to large to N number of physical time-frequency resource, the unit of the physical time-frequency resource is one of the following：Money Source element, enhancing control channel unit and enhancing channel element set；4th resource mapping unit is specifically used for described On downlink physical running time-frequency resource, by M information symbol of the control information of dedicated search space carrying according to physical time-frequency In the Sequential Mapping of the serial number of resource from big to small to the M resource elements.

The present invention also provides a kind of base station, which includes the sending device for the control channel that above-described embodiment provides.

Corresponding with embodiment of the method shown in Fig. 2, the embodiment of the present invention additionally provides a kind of reception dress of control channel It sets, which can be a part of UE, can also be UE itself.As shown in FIG. 6, which includes receiving module 21 and obtains Modulus block 22, wherein receiving module 21 are used to receive the control information of carrying public search space carrying and dedicated search space is held The down channel of the control information of load；Acquisition module 22 is used for according to the physics where the first mapping ruler from the down channel The control information of the public search space carrying is obtained in resource, and according to the second mapping ruler where the down channel Physical resource on obtain the control information of dedicated search space carrying.

Specifically, public search space described above may map to two time slots of a subframe, the dedicated search Space can also map two time slots of a subframe.

Further, as shown in fig. 7, above-mentioned acquisition module 22 may include：

First acquisition unit 221, for what is received from one or more of first antenna port set antenna port The control information of the public search space carrying is obtained in physical resource where down channel；

Second acquisition unit 222, for what is received from one or more of the second antenna port set antenna port The control information of the dedicated search space carrying is obtained in physical resource where down channel, wherein send described public The control information of search space carrying is different with the antenna port of control information of dedicated search space carrying is sent.

Either, as shown in figure 8, above-mentioned acquisition module 22 includes：

Third acquiring unit 223, for according to the downlink physical time-frequency where the first mapping order from the down channel The control information of public search space carrying is obtained in resource；

4th acquiring unit 224, for according to the downlink physical time-frequency where the second mapping order from the down channel The control information of dedicated search space carrying is obtained in resource.

In the above embodiment of the present invention, third acquiring unit 223 is specifically used in the downlink object where the down channel It manages on running time-frequency resource, is obtained from N number of physical time-frequency resource according to the serial number sequence from small to large of physical time-frequency resource public The control information of search space carrying, wherein N is positive integer, and the unit of the physical time-frequency resource is one of the following：Resource element Element, enhancing control channel unit and enhancing channel element set, the 4th acquiring unit 224 are specifically used in the downlink On downlink physical running time-frequency resource where channel, according to physical time-frequency resource serial number sequence from big to small from M physics when The control information of dedicated search space carrying is obtained in frequency resource, wherein M is positive integer.

The embodiment of the present invention has been also provided to a kind of user equipment, includes the reception of the control channel of above-described embodiment offer Device.

The embodiment of the present invention also provides a kind of base station, and Fig. 9 is the structural schematic diagram of base station in the embodiment of the present invention, such as Fig. 9 Shown, which includes processor 31 and transmitter 32, and wherein processor 31 is used for public search space according to the first mapping Rule is mapped in downlink physical resource, and dedicated search space is mapped to the downlink physical according to the second mapping ruler and is provided On source, wherein map the downlink physical resource of the public search space and map the downlink physical in the dedicated search space Resource is not overlapped；Transmitter 32 is used to send the control information of the public search space carrying in the downlink physical resource With the control information of dedicated search space carrying.

In the above embodiment of the present invention, public search space may map to two time slots of a subframe, dedicated search Space may map to two time slots of a subframe.

In addition, above-mentioned processor 31 is specifically used for the public search space being mapped in the set of first antenna port One or more antenna ports on；By one or more days of the dedicated search space reflection to the second antenna port set On line end mouth, wherein sending the antenna port of the control information of the public search space carrying and sending the dedicated search sky Between the antenna port of control information that carries it is different.

Either, above-mentioned processor 31 is specifically used for the public search space being mapped to down according to the first mapping order On row physical time-frequency resource；The dedicated search space is mapped to according to the second mapping order on downlink physical running time-frequency resource.

In the above embodiment of the present invention, processor 31 therein is specifically used on the downlink physical running time-frequency resource, will N number of information symbol of the control information of public search space carrying according to physical time-frequency resource serial number from small to large suitable Sequence is mapped in N number of physical time-frequency resource, and the unit of the physical time-frequency resource is one of the following：Resource element, enhancing Control channel unit and enhancing channel element set, and in the downlink physical running time-frequency resource special are searched described M information symbol of the control information of rope space carrying is according to the serial number Sequential Mapping from big to small of physical time-frequency resource to M In a physical time-frequency resource.

Embodiment of the method shown in FIG. 1 may refer to the specific explanations of the above embodiment of the present invention.

The present invention also provides a kind of user equipment, Figure 10 is the structural schematic diagram of user equipment in the embodiment of the present invention, As shown in Figure 10, which includes receiver 41 and processor 42, and wherein receiver 41 is for receiving carrying common search The down channel in space and dedicated search space；Processor 42 is used for according to where the first mapping ruler from the down channel Obtain the control information of public search space carrying on physical resource, and according to the second mapping ruler from the down channel The control information of dedicated search space carrying is obtained on the physical resource at place, wherein under where the public search space Downlink physical resource where row physical resource and the dedicated search space is not overlapped.

In the above embodiment of the present invention, wherein processor 42 is specifically used for one or more in gathering from first antenna port The control information of the public search space carrying is obtained in physical resource where the down channel received on a antenna port, And from the physical resource where the down channel received on one or more of the second antenna port set antenna port Obtain the control information of the dedicated search space carrying, wherein send the control information of the public search space carrying Antenna port is different with the antenna port of control information of dedicated search space carrying is sent.Either, processor 42 has Body is used for according to obtaining public search space on the downlink physical running time-frequency resource where the first mapping order from the down channel The control information of carrying, and according to being obtained on the downlink physical running time-frequency resource where the second mapping order from the down channel The control information of dedicated search space carrying.

Wherein, above-mentioned processor is specifically used on the downlink physical running time-frequency resource where the down channel, according to The sequence of the serial number of physical time-frequency resource from small to large obtains the control of public search space carrying from N number of physical time-frequency resource Information, wherein N is positive integer, and the unit of the physical time-frequency resource is one of the following：Resource element, enhancing control channel list Member and enhancing channel element set, and on the downlink physical running time-frequency resource where the down channel, according to physical time-frequency The sequence of the serial number of resource from big to small obtains the control information of dedicated search space carrying from M physical time-frequency resource, In, M is positive integer.

One of ordinary skill in the art will appreciate that：Realize that all or part of step of above method embodiment can pass through The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer read/write memory medium, the program When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes：ROM, RAM, magnetic disc or light The various media that can store program code such as disk.

Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme.

Claims

1. a kind of sending method of control channel, which is characterized in that including：

Public search space is mapped to according to the first mapping ruler in downlink physical resource, and by dedicated search space according to Two mapping rulers are mapped in the downlink physical resource, wherein map the public search space downlink physical resource and The downlink physical resource for mapping the dedicated search space is not overlapped；

The control information of the public search space carrying and the dedicated search space are sent in the downlink physical resource The control information of carrying；

The public search space is mapped to two time slots of a subframe, the dedicated search space reflection to subframe Two time slots.

2. the sending method of control channel according to claim 1, which is characterized in that it is described by public search space according to First mapping ruler is mapped in downlink physical resource：

It will be on one or more antenna ports of the dedicated search space reflection to the second antenna port set, wherein send The antenna port of the control information of the public search space carrying and the control information for sending the dedicated search space carrying Antenna port it is different.

3. the sending method of control channel according to claim 1, which is characterized in that it is described by public search space according to First mapping ruler is mapped in downlink physical resource：

4. the sending method of control channel according to claim 3, which is characterized in that it is described by public search space according to First mapping order is mapped on downlink physical running time-frequency resource：

On the downlink physical running time-frequency resource, the N number of information symbol for the control information that the public search space carries is pressed According in the serial number Sequential Mapping to N number of physical time-frequency resource from small to large of physical time-frequency resource, the physical time-frequency money The unit in source is one of the following：Resource element, enhancing control channel unit and enhancing channel element set；

On the downlink physical running time-frequency resource, M information symbol of the control information of dedicated search space carrying is pressed According in the serial number Sequential Mapping from big to small to the M physical time-frequency resources of physical time-frequency resource.

5. a kind of method of reseptance of control channel, which is characterized in that including：

The public search space carrying is obtained on physical resource where the first mapping ruler from the down channel Information is controlled, and is carried according to dedicated search space is obtained on the physical resource where the second mapping ruler from the down channel Control information, wherein under where the downlink physical resource and the dedicated search space where the public search space Row physical resource is not overlapped；

Two time slots of one subframe of the public search space occupancy, two of one subframe of dedicated search space hold Time slot.

6. the method for reseptance of control channel according to claim 5, which is characterized in that

The public search space is obtained on the physical resource according to where the first mapping ruler from the down channel to hold The control information of load includes：

From the physical resource where the down channel received on one or more of first antenna port set antenna port Obtain the control information of the public search space carrying；

The control for obtaining the carrying of dedicated search space from the physical resource where down channel according to the second mapping ruler Information includes：

From the physical resource where the down channel received on one or more of the second antenna port set antenna port Obtain the control information of the dedicated search space carrying, wherein send the control information of the public search space carrying Antenna port is different with the antenna port of control information of dedicated search space carrying is sent.

7. the method for reseptance of control channel according to claim 5, which is characterized in that it is described according to the first mapping ruler from The control information that the public search space carries is obtained on physical resource where the down channel includes：

It is empty according to the common search is obtained on the downlink physical running time-frequency resource where the first mapping order from the down channel Between the control information that carries；

The carrying of dedicated search space is obtained on the physical resource according to where the second mapping ruler from the down channel Controlling information includes：

It is empty according to the dedicated search is obtained on the downlink physical running time-frequency resource where the second mapping order from the down channel Between the control information that carries.

8. the method for reseptance of control channel according to claim 7, which is characterized in that it is described according to the first mapping order from The control information that public search space carries is obtained on downlink physical running time-frequency resource where the down channel includes：

On the downlink physical running time-frequency resource where the down channel, according to serial number from small to large suitable of physical time-frequency resource Sequence obtains the control information of public search space carrying from N number of physical time-frequency resource, wherein N is positive integer, when the physics The unit of frequency resource is one of the following：Resource element, enhancing control channel unit and enhancing channel element set；

It is empty that dedicated search is obtained on the downlink physical running time-frequency resource according to where the second mapping order from the down channel Between the control information that carries include：

On the downlink physical running time-frequency resource where the down channel, according to serial number from big to small suitable of physical time-frequency resource Sequence obtains the control information of dedicated search space carrying from M physical time-frequency resource, wherein M is positive integer.

9. a kind of sending device of control channel, which is characterized in that including：

Resource mapping module, for public search space to be mapped to downlink physical resource according to the first mapping ruler, and will Dedicated search space is mapped to according to the second mapping ruler in the downlink physical resource, wherein it is empty to map the common search Between downlink physical resource and map the downlink physical resource in the dedicated search space and be not overlapped；

Sending module, control information for sending public search space carrying in the downlink physical resource and described The control information of dedicated search space carrying；

The resource mapping module is specifically used for for public search space being mapped to two time slots of a subframe, will be described special Search space is mapped to two time slots of a subframe.

10. the sending device of control channel according to claim 9, which is characterized in that the resource mapping module includes：

First resource map unit, one or more for being mapped to the public search space in the set of first antenna port On a antenna port；

Secondary resource map unit is used for the one or more of the dedicated search space reflection to the second antenna port set On antenna port, wherein send the antenna port of the control information of public search space carrying and transmission is described special searches The antenna port of the control information of rope space carrying is different.

11. the sending device of control channel according to claim 9, which is characterized in that the resource mapping module includes：

Information resources map unit, for the public search space to be mapped to downlink physical time-frequency according to the first mapping order In resource；

4th resource mapping unit, for the dedicated search space to be mapped to downlink physical time-frequency according to the first mapping order In resource.

12. the sending device of control channel according to claim 11, which is characterized in that the information resources map unit Specifically on the downlink physical running time-frequency resource, the N number of information for the control information that the public search space is carried accords with Number according in the serial number Sequential Mapping to N number of physical time-frequency resource from small to large of physical time-frequency resource, when the physics The unit of frequency resource is one of the following：Resource element, enhancing control channel unit and enhancing channel element set；4th money Source map unit is specifically used on the downlink physical running time-frequency resource, by the control information of dedicated search space carrying M information symbol is according in the serial number Sequential Mapping from big to small to the M resource elements of physical time-frequency resource.

13. a kind of base station, which is characterized in that include the sending device of any control channels of claim 9-12.

14. a kind of reception device of control channel, which is characterized in that including：

Receiving module, the down channel for receiving carrying public search space and dedicated search space；

Acquisition module, for according to obtaining described public search on the physical resource where the first mapping ruler from the down channel The control information of rope space carrying, and it is special according to being obtained on the physical resource where the second mapping ruler from the down channel The control information of search space carrying；

The public search space is mapped to two time slots of a subframe, and the two of one subframe of dedicated search space reflection A time slot.

15. the reception device of control channel according to claim 14, which is characterized in that the acquisition module includes：

First acquisition unit, the down channel for being received from one or more of first antenna port set antenna port The control information of the public search space carrying is obtained in the physical resource at place；

Second acquisition unit, the down channel for being received from one or more of the second antenna port set antenna port The control information of the dedicated search space carrying is obtained in the physical resource at place, wherein send the public search space The control information of carrying is different with the antenna port of control information of dedicated search space carrying is sent.

16. the reception device of control channel according to claim 14, which is characterized in that the acquisition module includes：

Third acquiring unit, for according to being obtained on the downlink physical running time-frequency resource where the first mapping order from the down channel Take the control information of the public search space carrying；

4th acquiring unit, for according to being obtained on the downlink physical running time-frequency resource where the second mapping order from the down channel Take the control information of the dedicated search space carrying.

17. the reception device of control channel according to claim 16, which is characterized in that the third acquiring unit is specific For in the downlink physical running time-frequency resource where the down channel, according to serial number from small to large suitable of physical time-frequency resource Sequence obtains the control information of public search space carrying from N number of physical time-frequency resource, wherein N is positive integer, when the physics The unit of frequency resource is one of the following：Resource element, enhancing control channel unit and enhancing channel element set, the described 4th obtains Take unit be specifically used on the downlink physical running time-frequency resource where the down channel, according to physical time-frequency resource serial number from Obtain the control information of dedicated search space carrying from M physical time-frequency resource to small sequence greatly, wherein M is positive integer.

18. a kind of user equipment, which is characterized in that include the reception device of any control channels of claim 14-17.

19. a kind of base station, which is characterized in that including：

Processor for public search space to be mapped to downlink physical resource according to the first mapping ruler, and is searched special Rope space is mapped to according to the second mapping ruler in the downlink physical resource, wherein is mapped under the public search space Row physical resource and the downlink physical resource for mapping the dedicated search space are not overlapped；

Transmitter, control information for sending public search space carrying in the downlink physical resource and it is described specially The control information carried with search space；

20. base station according to claim 19, which is characterized in that the processor is specifically used for common search sky Between be mapped to one or more of first antenna port set on antenna port；By the dedicated search space reflection to second On one or more antenna ports of antenna port set, wherein send the control information of the public search space carrying Antenna port is different with the antenna port of control information of dedicated search space carrying is sent.

21. base station according to claim 19, which is characterized in that the processor is specifically used for common search sky Between be mapped on downlink physical running time-frequency resource according to the first mapping order；By the dedicated search space according to the second mapping order It is mapped on downlink physical running time-frequency resource.

22. base station according to claim 21, which is characterized in that the processor is specifically used in the downlink physical In frequency resource, N number of information symbol of the control information that the public search space is carried according to physical time-frequency resource serial number In Sequential Mapping from small to large to N number of physical time-frequency resource, the unit of the physical time-frequency resource is one of the following：Money Source element, enhancing control channel unit and enhancing channel element set, and be used in the downlink physical running time-frequency resource, it will M information symbol of the control information of dedicated search space carrying according to physical time-frequency resource serial number from big to small suitable Sequence is mapped in the M physical time-frequency resources.

23. a kind of user equipment, which is characterized in that including：

Processor, for according to obtaining the common search on the physical resource where the first mapping ruler from the down channel The control information of space carrying, and according to obtaining special search on the physical resource where the second mapping ruler from the down channel The control information of rope space carrying, wherein the downlink physical resource and the dedicated search where the public search space are empty Between where downlink physical resource be not overlapped；

24. user equipment according to claim 23, which is characterized in that the processor is specifically used for from first antenna end The common search is obtained in physical resource where the down channel received on one or more of mouth set antenna port The control information of space carrying, and the downlink received from one or more of the second antenna port set antenna port are believed The control information of the dedicated search space carrying is obtained in physical resource where road, wherein it is empty to send the common search Between the antenna port of control information that carries it is different with the antenna port of control information of dedicated search space carrying is sent.

25. user equipment according to claim 23, which is characterized in that the processor is specifically used for according to the first mapping Sequence obtains the control information of the public search space carrying from the downlink physical running time-frequency resource where the down channel, And it is empty according to the dedicated search is obtained on the downlink physical running time-frequency resource where the second mapping order from the down channel Between the control information that carries.

26. user equipment according to claim 25, which is characterized in that the processor is specifically used for believing in the downlink On downlink physical running time-frequency resource where road, according to the serial number sequence from small to large of physical time-frequency resource from N number of physical time-frequency The control information of public search space carrying is obtained in resource, wherein N is positive integer, and the unit of the physical time-frequency resource is Following one：Resource element, enhancing control channel unit and enhancing channel element set, and where the down channel On downlink physical running time-frequency resource, obtained from M physical time-frequency resource according to the serial number sequence from big to small of physical time-frequency resource The control information for taking dedicated search space to carry, wherein M is positive integer.