阅读说明：本技术 通信装置及通信方法 (Communication device and communication means ) 是由 堀内绫子 铃木秀俊 武田一树 王立磊 于 2013-01-29 设计创作，主要内容包括：本发明提供一种通信装置及通信方法。该通信装置包括：发送机,发送映射到多个候选增强物理下行控制信道中的至少一个的控制信息,上述多个候选增强物理下行控制信道在连续下行子帧集中重复；以及接收机,接收根据上述连续下行子帧集的最末尾的子帧确定的上行子帧中的物理上行共享信道。(The present invention provides a kind of communication device and communication means.The communication device includes: transmitter, sends the control information for being mapped at least one of multiple candidate enhancing Physical Downlink Control Channel, and above-mentioned multiple candidate enhancing Physical Downlink Control Channel are concentrated in continuous downlink subframe to be repeated；And receiver, receive the Physical Uplink Shared Channel in the sub-frame of uplink determined according to the subframe of the most end of above-mentioned continuous downlink subframe collection.)

1. a kind of communication device, comprising:

Transmitter sends the control information for being mapped at least one of multiple candidate enhancing Physical Downlink Control Channel, described Multiple candidate enhancing Physical Downlink Control Channel are concentrated in continuous downlink subframe to be repeated；And

Receiver receives the physical uplink in the sub-frame of uplink determined according to the subframe of the most end of the continuous downlink subframe collection Shared channel.

2. communication device as described in claim 1,

The receiver receives the ACK/NACK information in sub-frame of uplink, the ACK/NACK information instruction it is described it is continuous under The testing result of the downlink data sent in the subframe of the most end of row subframe collection.

3. communication device as described in claim 1,

Between each enhancing Physical Downlink Control Channel collection in each subframe for being set to the continuous downlink subframe collection, lead to With Physical Resource Block logarithm, and each described enhancing Physical Downlink Control Channel collection is the candidate in a downlink subframe respectively Enhance the set of Physical Downlink Control Channel.

4. communication device as described in claim 1,

Between each enhancing Physical Downlink Control Channel collection in each subframe for being set to the continuous downlink subframe collection, object It is different to manage at least one of frequency location of resource block logarithm and Physical Resource Block pair.

5. communication device as described in claim 1,

The transmitter sends the Physical Downlink Shared Channel region for each subframe for being mapped to the continuous downlink subframe collection Downlink data.

6. communication device as described in claim 1,

The receiver receives and is mapped to the continuous downlink subframe collection on physical uplink control channel resource below The associated ACK/NACK information of the downlink data in the Physical Downlink Shared Channel region of each subframe, the Physical Uplink Control Channel One or more enhancing control channel elements of resource and the subframe for the most end for being configured at the continuous downlink subframe collection Enhancing control channel element index correspond to.

7. communication device as described in claim 1,

Using shared precoding, is concentrated in the continuous downlink subframe, generate enhancing physical downlink channel control signal.

8. communication device as described in claim 1,

Candidate when repeat number is greater than 1, corresponding at least one polymerization grade enhances Physical Downlink Control Channel number, than repeating Candidate enhancing Physical Downlink Control Channel number when number is 1, corresponding at least one described polymerization grade is smaller.

9. a kind of communication means, comprising the following steps:

Send the control information for being mapped at least one of multiple candidate enhancing Physical Downlink Control Channel, the multiple candidate Enhance Physical Downlink Control Channel and concentrates repetition in continuous downlink subframe；And

Receive the shared letter of physical uplink in the sub-frame of uplink determined according to the subframe of the most end of the continuous downlink subframe collection Road.

10. communication means as claimed in claim 9, comprising the following steps:

On physical uplink control channel resource below, each subframe of the continuous downlink subframe collection is received and is mapped to The associated ACK/NACK information of the downlink data in Physical Downlink Shared Channel region, the physical uplink control channel resource and configuration In the enhancing control of one or more enhancing control channel elements of the subframe of the most end of the continuous downlink subframe collection Channel element index corresponds to.

11. a kind of communication device, comprising:

Receiver receives the control information for being mapped at least one of multiple candidate enhancing Physical Downlink Control Channel, described Multiple candidate enhancing Physical Downlink Control Channel are concentrated in continuous downlink subframe to be repeated；And

Transmitter is sent physically in the sub-frame of uplink that the subframe according to the most end of the continuous downlink subframe collection determines The shared channel of row.

12. communication device as claimed in claim 11,

The transmitter sends ACK/NACK information in sub-frame of uplink, and the ACK/NACK information instruction is in the continuous downlink The testing result of the downlink data sent in the subframe of the most end of subframe collection.

13. communication device as claimed in claim 11,

Between each enhancing Physical Downlink Control Channel collection in each subframe for being set to the continuous downlink subframe collection, lead to With Physical Resource Block logarithm, and each described enhancing Physical Downlink Control Channel collection is the candidate in a downlink subframe respectively Enhance the set of Physical Downlink Control Channel.

14. communication device as claimed in claim 11,

Between each enhancing Physical Downlink Control Channel collection in each subframe for being set to the continuous downlink subframe collection, object It is different to manage at least one of frequency location of resource block logarithm and Physical Resource Block pair.

15. communication device as claimed in claim 11,

The receiver receives the Physical Downlink Shared Channel region for each subframe for being mapped to the continuous downlink subframe collection Downlink data.

16. communication device as claimed in claim 11,

The transmitter sends and is mapped to the continuous downlink subframe collection on physical uplink control channel resource below The associated ACK/NACK information of the downlink data in the Physical Downlink Shared Channel region of each subframe, the Physical Uplink Control Channel One or more enhancing control channel elements of resource and the subframe for the most end for being configured at the continuous downlink subframe collection Enhancing control channel element index correspond to.

17. communication device as claimed in claim 11,

Using shared precoding, is concentrated in the continuous downlink subframe, generate enhancing physical downlink channel control signal.

18. communication device as claimed in claim 11,

Candidate when repeat number is greater than 1, corresponding at least one polymerization grade enhances Physical Downlink Control Channel number, than repeating Candidate enhancing Physical Downlink Control Channel number when number is 1, corresponding at least one described polymerization grade is smaller.

19. a kind of communication means, comprising the following steps:

Receive the control information for being mapped at least one of multiple candidate enhancing Physical Downlink Control Channel, the multiple candidate Enhance Physical Downlink Control Channel and concentrates repetition in continuous downlink subframe；And

In the sub-frame of uplink that the subframe according to the most end of the continuous downlink subframe collection determines, the shared letter of physical uplink is sent Road.

20. communication means as claimed in claim 19, comprising the following steps:

On physical uplink control channel resource below, each subframe of the continuous downlink subframe collection is sent and is mapped to The associated ACK/NACK information of the downlink data in Physical Downlink Shared Channel region, the physical uplink control channel resource and configuration In the enhancing control of one or more enhancing control channel elements of the subframe of the most end of the continuous downlink subframe collection Channel element index corresponds to.

Technical field

The present invention relates to base station, terminal, sending method and method of reseptances.

Background technique

In recent years, in cell mobile communication systems, with the multimedization of information, voice data, static figure are not only As the transmission of the Large Volume Datas such as data and dynamic image data is also gaining popularity.In addition, in LTE-Advanced (Long Term Evolution Advanced, senior long term evolution) in, utilize wide band radio band, Multiple-Input Multiple-Output (MIMO, multiple-input and multiple-output) transmission technology, interference control technology are realizing the research of high transfer rate just Prevailing.

The extension control channel region for referred to as enhancing PDCCH (EPDCCH), the expansion are devised in LTE-Advanced Opening up control channel region is to PDCCH (the Physical Downlink Control CHannel: downlink for controlling signal Route control channel) it is extended.EPDCCH is configured at the resource area (PDSCH of assigned downlink data (Physical Downlink Shared CHannel, Physical Downlink Shared Channel) region).In addition, base station can configure In the resource area (region EPDCCH) of EPDCCH, by terminal (also sometimes referred to as UE (User Equipment, Yong Hushe It is standby)) frequency resource (such as RB (Resource Block, resource block)) is determined to send signal.Therefore, it can control to being in The transmission power for the control signal that terminal near cell edge is sent, or this can be controlled by transmitted control signal Cell interferes or controls the interference caused by this cell of other cells caused by other cells.

Herein, a RB has 12 subcarriers in a frequency direction, in the direction of time with 0.5 millisecond of width. The unit for being combined with two RB in the direction of time is referred to as RB to (RB pair, resource block to).That is, RB is in frequency direction It is upper that there are 12 subcarriers, in the direction of time with 1 millisecond of width.In addition, in RB to 12 sons indicated on frequency axis In the case where the block of carrier wave, RB is to being referred to only as RB sometimes.In addition, within the physical layer, RP is to also referred to as PRB pair (Physical RB pair, Physical Resource Block to).In addition, the unit as defined in a subcarrier and an OFDM symbol is money Source element (RE:Resource Element).

In the region EPDCCH, each PRB pair is divided into unit made of 16 resources and is known as EREG (Enhanced Resource Element Group enhances element of resource group), the unit of the resource constituted by 4 or 8 EREG is referred to as ECCE (Enhanced Control Channel Element enhances control channel element).It will constitute and send a control letter Number the quantity of ECCE of EPDCCH be known as polymerization grade (AL:Aggregation level).EPDCCH can set multiple AL (referring for example to non-patent literature 1).In addition, having respectively provided " candidate EPDCCH " in advance in each AL.Herein, so-called candidate EPDCCH refers to the candidate region of mapping control signal, and blind decoding (monitoring) object of terminal is made of multiple candidate EPDCCH That is search space (Search Space).

In LTE-Advanced, can EPDCCH collection multiple for each terminal profile, the EPDCCH collection is by being possible to The set (that is, the distribution of control information is candidate) for configuring the ECCE of EPDCCH is constituted.Because setting the PRB used by EPDCCH collection Pair position and number N, so the flexibility of control signal configuration is high.

Fig. 1 shows the examples being mapped to EPDCCH in resource.The option and installment from above-mentioned multiple candidate EPDCCH The ECCE of EPDCCH.In Fig. 1, EPDCCH#0 and EPDCCH#1 are polymerization grade 1 (AL1), and EPDCCH#2 is polymerization grade 2 (AL2), EPDCCH#3 is polymerization grade 4 (AL4).In Fig. 1, EPDCCH#0 is configured at ECCE#0, and EPDCCH#1 is configured at ECCE# 1, EPDCCH#2 is configured at ECCE#2 and ECCE#3, and EPDCCH#3 is configured at ECCE#4, ECCE#5, ECCE#6, ECCE#7.Separately Outside, in Fig. 1, each ECCE is configured at 4 EREG, therefore is four by one point.As shown in Figure 1, in part (localized) distribution In the case of, 4 EREG are configured at same PRB pair, and in the case where dispersion (distributed) distribution, 4 EREG are configured at not Same PRB pair.

In addition, the distribution method as EPDCCH, have EPDCCH is intensively assigned to it is close to each other on frequency band " the part distribution " of position and " the dispersion distribution " being dispersedly assigned to EPDCCH on frequency band.Part distribution is for obtaining EPDCCH can be assigned in the good resource of line quality by the distribution method of frequency scheduling gain based on line quality information. Dispersion distribution can make EPDCCH be distributed on frequency axis and obtain frequency diversity gain.In LTE-Advanced, Neng Goushe The search space of foregone conclusion part adapted and both the search spaces for dispersing distribution.

In addition, in LTE-Advanced, the DL of indicating downlink route (DL:Downlink) data distribution Assignment and the UL grant of instruction uplink (UL:Uplink) data distribution are sent by PDCCH or EPDCCH.It is logical DL assignment is crossed, is notified by the resource allocation in the subframe for having sent the DL assignment to terminal.Another party Face, UL grant are notified by the resource allocation in the object subframe predetermined by UL grant to terminal.

Summary of the invention

Problems to be solved by the invention

LTE-Advanced has studied configuration and sends the low base station i.e. cell (Small cell) of power to realize heat The high transfer rate of point.For example, the Candidate Frequency for the carrier frequency used in cell is the high-frequencies such as 3.5GHz.However, In the case where high frequency radio band is utilized, although can expect to realize high transfer rate in short distance, by transmitting It can increase as distance increases apart from caused decaying.As a result, with the mobile communication system that high frequency radio band is utilized In the case where system, there are problems that the overlay area of cell becomes smaller this.In addition, for cell, it is also necessary to consider hair The limitation for sending power, the power that can be used in sending each subframe are limited.The overlay area of cell depends on control letter Therefore number range reached for above-mentioned cell, needs to expand the technology of control signal coverage areas.

In this regard, for example it is contemplated that application configures the soft merging (soft of the EPDCCH comprising control information across multiple subframes Combining) (also sometimes referred to as binding (bundling)).However, EPDCCH when not yet research is using soft merging so far Configuration method.

The purpose of the present invention is to provide the bases of the resource of configuration EPDCCH when can suitably set using soft merging It stands, terminal, sending method and method of reseptance.

Solution to problem

The communication device of one embodiment of the present invention includes: transmitter, and transmission is mapped to multiple candidate enhancing physical downs The control information of at least one of control channel, above-mentioned multiple candidate enhancing Physical Downlink Control Channel are in continuous downlink subframe It concentrates and repeats；And receiver, it receives in the sub-frame of uplink determined according to the subframe of the most end of above-mentioned continuous downlink subframe collection Physical Uplink Shared Channel.

The communication means of one embodiment of the present invention is mapped to multiple candidate enhancing physical downs the following steps are included: sending The control information of at least one of control channel, above-mentioned multiple candidate enhancing Physical Downlink Control Channel are in continuous downlink subframe It concentrates and repeats；And it receives in the sub-frame of uplink determined according to the subframe of the most end of above-mentioned continuous downlink subframe collection physically The shared channel of row.

The communication device of one embodiment of the present invention includes: receiver, and reception is mapped to multiple candidate enhancing physical downs The control information of at least one of control channel, above-mentioned multiple candidate enhancing Physical Downlink Control Channel are in continuous downlink subframe It concentrates and repeats；And transmitter, in the sub-frame of uplink that the subframe according to the most end of above-mentioned continuous downlink subframe collection determines, hair Send Physical Uplink Shared Channel.

The communication means of one embodiment of the present invention is mapped to multiple candidate enhancing physical downs the following steps are included: receiving The control information of at least one of control channel, above-mentioned multiple candidate enhancing Physical Downlink Control Channel are in continuous downlink subframe It concentrates and repeats；And in the sub-frame of uplink that the subframe according to the most end of above-mentioned continuous downlink subframe collection determines, send physics Uplink Shared Channel.

The base station of one embodiment of the present invention uses structure below, which includes: setup unit, will be by Enhanced The Enhanced Physical that Control Channel Element (ECCE enhances control channel element) is constituted Downlink Control Channel (EPDCCH enhances physical downlink control channel) collection is set in multiple subframes, Above-mentioned Enhanced Control Channel Element (ECCE) is for distributing the control for stepping up and stating multiple subframes and sending Information；And allocation unit, above-mentioned control information is distributed to each Physical Resource of above-mentioned multiple subframes The above-mentioned ECCE of either one or two of Block (PRB, Physical Resource Block) centering.

The terminal of one embodiment of the present invention use structure below, which includes: setup unit, determine be assigned across Multiple subframes and the Enhanced Control Channel Element (ECCE) of control information sent, above-mentioned ECCE are constituted Enhanced Physical Downlink Control Channel (EPDCCH) collection being set in above-mentioned multiple subframes；With And receiving unit, above-mentioned control information is received, above-mentioned control information is assigned to each Physical of above-mentioned multiple subframes The above-mentioned ECCE of either one or two of Resource Block (PRB) centering.

The sending method of one embodiment of the present invention is the following steps are included: will be by Enhanced Control Channel Enhanced Physical Downlink Control Channel (EPDCCH) collection that Element (ECCE) is constituted is set in In multiple subframes, above-mentioned Enhanced Control Channel Element (ECCE) for distribute step up state multiple subframes and The control information of transmission；And above-mentioned control information is sent, above-mentioned control information is assigned to each of above-mentioned multiple subframes The above-mentioned ECCE of either one or two of Physical Resource Block (PRB) centering.

The method of reseptance of one embodiment of the present invention comprises steps of determining that the control for being assigned and sending across multiple subframes The Enhanced Control Channel Element (ECCE) of information processed, above-mentioned ECCE composition are set in above-mentioned multiple subframes In Enhanced Physical Downlink Control Channel (EPDCCH) collection；And receive above-mentioned control letter Breath, above-mentioned control information are assigned to appointing for each Physical Resource Block (PRB) centering of above-mentioned multiple subframes One above-mentioned ECCE.

The effect of invention

In accordance with the invention it is possible to the resource of configuration EPDCCH when suitably setting is using soft merging.

Detailed description of the invention

Fig. 1 is the figure for illustrating EPDCCH.

Fig. 2 is the figure for illustrating soft merging.

Fig. 3 is the block diagram for indicating the structure of the major part of base station of embodiment of the present invention 1.

Fig. 4 is the block diagram for indicating the structure of the major part of terminal of embodiment of the present invention 1.

Fig. 5 is the block diagram for indicating the structure of base station of embodiment of the present invention 1.

Fig. 6 is the block diagram for indicating the structure of terminal of embodiment of the present invention 1.

Fig. 7 is the figure for indicating the timing of PDSCH and PUCCH of embodiment of the present invention 1.

Fig. 8 is the figure for indicating the timing of PUSCH of embodiment of the present invention 1.

Fig. 9 A and Fig. 9 B are the figures for indicating the switching using soft merging of embodiment of the present invention 1.

Figure 10 is the figure for indicating the setting example of candidate EPDCCH of embodiment of the present invention 2.

Figure 11 A and Figure 11 B are the figures for indicating the setting example of the search space of EPDCCH of embodiment of the present invention 2.

Figure 12 A and Figure 12 B are the figures for indicating the setting example of the search space of EPDCCH of embodiment of the present invention 2.

Figure 13 is the figure for indicating the candidate EPDCCH number of embodiment of the present invention 2.

Figure 14 is the figure for indicating the setting example of candidate EPDCCH of embodiment of the present invention 3.

Figure 15 is the figure for indicating the PRB pair (EREG) of configuration ECCE of embodiment of the present invention 3.

Figure 16 A and Figure 16 B are the figures for indicating the setting example of candidate EPDCCH number of other embodiments of the present invention.

Label declaration

100 base stations

200 terminals

101 distribution information generating units

102,205 setup unit

103,207 error correction encoding unit

104,208 modulation unit

105,209 signal distribution unit

106,210 transmission unit

107,201 receiving unit

108,203 demodulating unit

109,204 error correction decoding unit

202 signal separation units

206 control signal receiving units

Specific embodiment