CN103517431A - Enhanced physical down link control channel resource allocation method - Google Patents
Enhanced physical down link control channel resource allocation method Download PDFInfo
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Abstract
The invention provides an enhanced physical down link control channel (ePDCCH) resource allocation method. The ePDCCH resource allocation method comprises the following steps that a physical resource block (PRB) used for transmitting an enhanced physical control format indication channel (ePCFICH) is determined, and the ePCFICH is used for indicating the PRB used for transmitting an ePDCCH. The invention further provides an ePDCCH detection method, a base station and user equipment.
Description
Technical field
The present invention relates to wireless communication technology field.More specifically, the present invention relates to a kind of resource allocation methods, detection method, base station and subscriber equipment that strengthens physical downlink control channel.
Background technology
In third generation partner plan (3GPP) Long Term Evolution (LTE) Rel-8/9/10 system, defined a physical downlink control channel (PDCCH:Physical Downlink Control Channel), for the control informations such as Uplink/Downlink resource distribution of transmission user equipment.
In January, 2011,3GPP has held TSG-RAN WG1#63bis meeting at Dublin, Ireland.In this meeting, Ericsson is at its motion (R1-110461, Ericsson, Baseline Schemes and Focus of CoMP Studies) in, point out, need the further enhancing technology of research PDCCH, the possibility that investigation user's equipment exclusive (UE-Specific) demodulation reference signaling (DM-RS) carries out PDCCH transmission.Finally through 3GPP session discussing repeatedly, determine to introduce a kind of physical downlink control channel (ePDCCH) of enhancing, thus increase control channel capacity, support frequency domain Inter-Cell Interference Coordination, make full use of the spatial reuse ability of control channel resource.
If adopt semi-static mode to distribute the resource of ePDCCH, due to the dynamic dispatching of each subframe, the actual required ePDCCH resource of communicating downlink control information (DCI) is also dynamic change, and this certainly will will cause the waste of ePDCCH resource.Therefore be necessary to know dynamically the total amount of each subframe ePDCCH resource.Samsung is at list of references (R1-122261, Samsung, Enhanced PCFICH, 3GPP TSG RAN1#69, Prague, Czech Republic, May21st-25th, 2012) in, propose to introduce a new physical channel ePCFICH, for dynamic number of indicating the Resource Block of each subframe ePDCCH.The document also defines 4 kinds and has different Physical Resource Block (PRB) logarithm object configuration, and wherein any configuration of ePCFICH indication (be how many PRB to) is for the ePDCCH transmission of corresponding subframe.Yet the document does not point out which PRB to transmit ePCFICH with.In addition, Fuji Tsu is at list of references (R1-122074, Fujitsu, Motivation, Requirements and Design for ePCFICH, 3GPP TSG RAN1#69, Prague, Czech Republic, May.21st-25th, 2012) in, also point out, by ePCFICH, indicate a resource collection as strengthening public search space (enhanced common search space) and strengthening user-specific search volume (enhanced UE specific search space).
In addition,, because ePDCCH is based on DM-RS transmission, be therefore applicable to very much the scheduling of resource of machine type communication MTC (Machine Type Communication) user data in transmission LTE system.Technical report (3GPP TR 36.888 at 3GPP, Study on provision of low-cost MTC UEs based on LTE) demand to MTC design in has been done corresponding description, and this report points out to consider that MTC subscriber equipment and traditional LTE subscriber equipment are operated in the operational requirements on same carrier frequency cheaply.If MTC subscriber equipment and traditional LTE subscriber equipment are operated in same carrier frequency, because the bandwidth of MTC transfer of data is only a part for LTE system bandwidth, therefore MTC subscriber equipment cannot obtain schedule information by traditional PDCCH, and the PDSCH that also cannot obtain by traditional PCFICH this subframe from which sign-on transmits.Based on this, Qualcomm is at list of references (R1-122802, Qualcomm, Downlink transmission modes for MTC, 3GPP TSG RAN1#69, Prague, Czech Republic, May 21st-25th, 2012) middle proposition, in system, distribute separately some subframes to be used for transmitting MTC data, in these subframes, limit traditional PDCCH and only use 1 orthogonal frequency division multiplex OFDM symbol transmission.Therefore,, for MTC transfer of data, need a kind of for dynamically indicating the scheme of the shared OFDM symbolic number of traditional PDCCH.
According to the requirement of LTE Rel-12 and later release system thereof, ePCFICH will certainly be incorporated in new system.Therefore, need to design a kind of scheme, can realize the dynamic assignment of ePDCCH resource, thereby improve the level of resources utilization of system.
Summary of the invention
For above problem, the present invention proposes a kind of resource allocation methods, detection method, base station and subscriber equipment that strengthens physical downlink control channel, with at least some in solving the problems of the technologies described above.
One aspect of the present invention provides a kind of resource allocation methods that strengthens physical downlink control channel ePDCCH, comprises the following steps: be identified for the Physical Resource Block PRB that transmission strengthens Physical Control Format Indicator Channel ePCFICH; And indicate for transmitting the PRB of ePDCCH with ePCFICH.
Preferably, determining step comprises: based on Cell Identity CI, calculate for transmitting the PRB of ePCFICH, the ePCFICH of different districts in same cluster is located in PRB different on frequency domain.
Preferably, determining step comprises: from a plurality of candidate ePCFICH PRB, select for transmitting the PRB of ePCFICH.Said method also comprises: to user equipment (UE), notify selected for transmitting the PRB of ePCFICH.
Preferably, said method also comprises: from a plurality of candidate ePDCCH PRB, select for transmitting the PRB of ePDCCH.
Preferably, said method also comprises: at ePCFICH, comprise the indication to the orthogonal frequency division multiplex OFDM symbolic number for transmitting physical downlink control channel PDCCH.
Another aspect of the present invention provides a kind of base station, comprising: determining unit, is identified for the Physical Resource Block PRB that transmission strengthens Physical Control Format Indicator Channel ePCFICH; And indicating member, with ePCFICH, indicate the PRB that strengthens physical downlink control channel ePDCCH for transmitting.
Preferably, determining unit is configured to: based on Cell Identity CI, calculate for transmitting the PRB of ePCFICH, the ePCFICH of different districts in same cluster is located in PRB different on frequency domain.
Preferably, determining unit is configured to: from a plurality of candidate ePCFICH PRB, select for transmitting the PRB of ePCFICH.Above-mentioned base station also comprises: notification unit, to user equipment (UE), notify selected for transmitting the PRB of ePCFICH.
Preferably, above-mentioned base station also comprises: selected cell, from a plurality of candidate ePDCCH PRB, select for transmitting the PRB of ePDCCH.
Preferably, indicating member is also configured to: at ePCFICH, comprise the indication to the orthogonal frequency division multiplex OFDM symbolic number for transmitting physical downlink control channel PDCCH.
Another aspect of the present invention provides a kind of detection method that strengthens physical downlink control channel ePDCCH, comprise the following steps: be identified for the Physical Resource Block PRB that transmission strengthens Physical Control Format Indicator Channel ePCFICH, so that ePCFICH is decoded; And according to the ePCFICH of decoding, obtain for transmitting the PRB of ePDCCH, to detect ePDCCH.
Preferably, determining step comprises: based on Cell Identity CI, calculate for transmitting the PRB of ePCFICH, the ePCFICH of different districts in same cluster is located in PRB different on frequency domain.
Preferably, said method also comprises: from base station, receive about for transmitting the notice of the PRB of ePCFICH, describedly for transmitting the PRB of ePCFICH, from a plurality of candidate ePCFICHPRB, select.Determining step comprises: the notice based on received is identified for transmitting the PRB of ePCFICH.
Preferably, for transmitting the PRB of ePDCCH, from a plurality of candidate ePDCCH PRB, select.
Preferably, said method also comprises: according to the ePCFICH of decoding, obtain the orthogonal frequency division multiplex OFDM symbolic number for transmitting physical downlink control channel PDCCH.
Another aspect of the present invention provides a kind of user equipment (UE), comprising: determining unit, is identified for the Physical Resource Block PRB that transmission strengthens Physical Control Format Indicator Channel ePCFICH, so that ePCFICH is decoded; And acquisition unit, according to the ePCFICH of decoding, obtain the PRB that strengthens physical downlink control channel ePDCCH for transmitting, to detect ePDCCH.
Preferably, determining unit is configured to: based on Cell Identity CI, calculate for transmitting the PRB of ePCFICH, the ePCFICH of different districts in same cluster is located in PRB different on frequency domain.
Preferably, above-mentioned UE also comprises: receiving element ，Cong base station receives about for transmitting the notice of the PRB of ePCFICH, describedly for transmitting the PRB of ePCFICH, from a plurality of candidate ePCFICH PRB, selects.Determining unit is configured to: the notice based on received is identified for transmitting the PRB of ePCFICH.
Preferably, for transmitting the PRB of ePDCCH, from a plurality of candidate ePDCCH PRB, select.
Preferably, obtain unit and be also configured to: according to the ePCFICH of decoding, obtain the orthogonal frequency division multiplex OFDM symbolic number for transmitting physical downlink control channel PDCCH.
Adopt the present invention, can realize the dynamic assignment of system ePDCCH resource, thereby improve the level of resources utilization of system.
Accompanying drawing explanation
By detailed description with the accompanying drawing below, above-mentioned and further feature of the present invention will become more apparent, wherein:
Fig. 1 shows the schematic block diagram according to base station of the present invention;
Fig. 2 shows the schematic block diagram according to subscriber equipment of the present invention;
Fig. 3 shows according to ePCFICH/ePDCCH ios dhcp sample configuration IOS DHCP of the present invention;
Fig. 4 shows according to another example of ePCFICH/ePDCCH configuration of the present invention;
Fig. 5 shows according to another example of ePCFICH/ePDCCH configuration of the present invention;
Fig. 6 shows according to another example of ePCFICH/ePDCCH configuration of the present invention;
Fig. 7 shows according to another example of ePCFICH/ePDCCH configuration of the present invention;
Fig. 8 shows according to the flow chart of ePDCCH resource allocation methods of the present invention; And
Fig. 9 shows according to the flow chart of ePDCCH detection method of the present invention.
Embodiment
Below, the description to specific embodiments of the invention in conjunction with the drawings, principle of the present invention and realization will become obvious.It should be noted in the discussion above that the present invention should not be limited to specific embodiment hereinafter described.In addition, for for simplicity, omitted there is no the detailed description of the known technology of direct correlation with the present invention, to prevent that the understanding of the present invention from causing, obscured.
Below using LTE Rel-11 mobile communication system and follow-up evolution version thereof as example application environment, specifically described according to a plurality of embodiment of the present invention.Yet, it is pointed out that and the invention is not restricted to following examples, but applicable to more other wireless communication systems, for example 5G cellular communication system from now on.
The present invention can be applied to support the system of one or more component carrier frequency (Component Carrier).In each component carrier frequency, by the control informations such as uplink/downlink resources distribution of ePDCCH transmission user equipment, and the relevant information of indicating the ePDCCH resource of current subframe to distribute by ePCFICH.
Fig. 1 shows according to the schematic block diagram of base station 100 of the present invention.Base station 100 comprises: determining unit 110; Indicating member 120.It will be understood by those skilled in the art that this base station also comprises realizes necessary other functional units of its function, as various processors, memory etc.
Fig. 2 shows according to the schematic block diagram of subscriber equipment of the present invention (UE) 200.Subscriber equipment 200 comprises: determining unit 210; Obtain unit 220.It will be understood by those skilled in the art that this subscriber equipment also comprises realizes necessary other functional units of its function, as various processors, memory etc.
Referring to Fig. 1 and Fig. 2, specifically describe according to concrete function and the operation of the assembly of base station 100 of the present invention and subscriber equipment 200.
The determining unit 110 of base station 100 is configured to be identified for the Physical Resource Block PRB that transmission strengthens Physical Control Format Indicator Channel ePCFICH.
Correspondingly, the determining unit 210 of UE 200 is configured to be identified for the Physical Resource Block PRB that transmission strengthens Physical Control Format Indicator Channel ePCFICH, so that ePCFICH is decoded.
In an embodiment, the determining unit 110 of base station 100 is configured to: based on Cell Identity CI, calculate for transmitting the PRB of ePCFICH, the ePCFICH of different districts in same cluster is located in PRB different on frequency domain.
Particularly, as shown in Figure 3, arbitrary component carrier frequency is comprised of N continuous on a frequency domain PRB, according to predetermined computation method, based on Physical Cell Identifier (ID) number can obtain unique one No. PRB.For example,, for transmitting the PRB n of ePCFICH
pRBcan calculate as follows:
Wherein
for the physical district ID number of current component carrier frequency, K be under physical area bunch numbering, C
maxfor example, for the number of the greatest physical community ID that defines in system (what define in LTE system at present is 504).According to calculating above, can make in the component carrier frequency of same cluster Nei Ge community for transmitting the PRB of ePCFICH different as far as possible on frequency domain.For example, as shown in Figure 3, each PRB strengthens resource unit group eREG (enhanced Resource Element Group) by 8 and forms, and at the above-mentioned PRB calculating, (has PRB n
pRB) in, on predetermined one or more eREG, transmit ePCFICH information.As shown in Figure 3, ePCFICH information is mapped to PRB after Channel Coding and Modulation
i(i=n
pRB) in eREG#0, eREG#2, eREG#4, eREG#6 on.
Correspondingly, the determining unit 210 of UE 200 is configured to the identical mode of determining unit 110 of Yi Yu base station 100, based on Cell Identity CI, calculates for transmitting the PRB of ePCFICH.
The indicating member 120 of base station 100 is configured to, and indicates the PRB that strengthens physical downlink control channel ePDCCH for transmitting with ePCFICH.In an embodiment, ePCFICH information can comprise at least two fields, the first field WeiPRB interval, and the PRB interval of indication for transmitting corresponding ePDCCH, the second field is PRB number, the PRB number of corresponding ePDCCH is distributed in indication.
As shown in Figure 4, suppose that it is 4 that ePCFICH indication PRB is spaced apart 2, PRB number, based on ePCFICH information, from for transmit ePCFICH PRB, can obtain in current scheduling subframe for transmitting the 4 GePRB positions of ePDCCH.According to the present invention, according to for transmitting the PRB of ePCFICH and for transmitting the preset mapping relation between the PRB of ePDCCH, can be from deriving for transmitting the PRB of ePDCCH for transmitting the PRB of ePCFICH.For example, in resource shown in Fig. 4 is distributed, for the initial PRB that transmits ePDCCH with identical for transmitting the PRB of ePCFICH.Yet, shown in Fig. 4 for transmitting the PRB of ePCFICH and being only example for the mapping relations transmitted between the PRB of ePDCCH, can also use any other mapping relations.Based on this mapping relations, above-mentioned for transmitting the PRB n of ePCFICH
pRBcalculating make in same cluster in neighbor cell the resource of ePDCCH different as much as possible on frequency domain, can effectively reduce the interference of minizone, guarantee the efficiency of transmission of ePDCCH.
Correspondingly, the acquisition unit 220 of UE 200 is configured to, and according to the ePCFICH of decoding, obtains the PRB that strengthens physical downlink control channel ePDCCH for transmitting, to detect ePDCCH.
As mentioned above, by determining the PRB at ePCFICH place, and by indicating with ePCFICH for transmitting the PRB of ePDCCH, can dynamically adjust the resource of ePDCCH and distribute, avoid the wasting of resources that may occur.
Alternatively, the determining unit 110 of base station 100 can be configured to: from a plurality of candidate ePCFICH PRB, select for transmitting the PRB of ePCFICH.Base station 100 also comprises: notification unit (not shown), to user equipment (UE), notify selected for transmitting the PRB of ePCFICH.
Correspondingly, UE 200 can also comprise: receiving element (not shown) ，Cong base station receives about for transmitting the notice of the PRB of ePCFICH.The determining unit 210 of UE 200 is configured to: the notice based on received is identified for transmitting the PRB of ePCFICH.
Particularly, according to component carrier frequency bandwidth, base station 100 and UE 200 can consult or set the set of the candidate PRB that can be used for transmitting ePCFICH in advance.For example, if component carrier frequency bandwidth is 20MHz, there are 8 candidate PRB that can be used for transmitting ePCFICH.As shown in Figure 5, the candidate PRB of ePCFICH is equally spaced is distributed in whole component carrier frequency bandwidth.
In one example, the notification unit of base station 100 can utilize Physical Broadcast Channel (PBCH) to carry out above-mentioned notice.Here, the field in PBCH is made to definition again.As shown in table 1, retain 3 effective fields that define in LTE Rel-11, so that compatible LTE Rel-11 and the before subscriber equipment of version.In addition, newly increase 3 bit fields, be used to indicate ePCFICH configuration information.By the ePCFICH configuration information of this 3 bit, one of 8 ePCFICH candidate PRB in can indicator diagram 5, as for transmitting the PRB of ePCFICH.
Table 1:PBCH Field Definition
With above-mentioned example class seemingly, each PRB can be comprised of 8 eREG, on PBCH, in the indicated PRB of ePCFICH configuration information, on predetermined one or more eREG, transmits ePCFICH information.As shown in Figure 3, ePCFICH information is mapped on eREG# 0, eREG# 2 in the indicated PRB of ePCFICH configuration information, eREG# 4, eREG# 6 after Channel Coding and Modulation.
With above-mentioned example class seemingly, ePCFICH information can comprise at least two fields, the first field WeiPRB interval, indication is for the PRB interval of transmitting corresponding ePDCCH, the second field is PRB number, the PRB number of corresponding ePDCCH is distributed in indication.As shown in Figure 4, suppose that it is 4 that ePCFICH indication PRB is spaced apart 2, PRB number, based on ePCFICH information, from for transmit ePCFICH PRB, can obtain in current scheduling subframe for transmitting the 4 GePRB positions of ePDCCH.
According to embodiments of the invention, base station 100 can comprise: selected cell (not shown), from a plurality of candidate ePDCCH PRB, select for transmitting the PRB of ePDCCH.As mentioned above, the indicating member 120 use ePCFICH of base station 100 indicate selected for transmitting the PRB of ePDCCH.
For example, the notification unit of base station 100, by the relevant basic configuration information of ePDCCH of high-level signaling (Dynamic Broadcast Channel D-BCH or radio resource control RRC) notifying user equipment 200 current area, is then indicated the shared resource of ePDCCH and number by ePCFICH dynamically.
As shown in Figure 6, the notification unit of base station 100 is by D-BCH signaling, and notifying user equipment 200:PRB0 and PRB1 form ePDCCH candidate resource collection # 1, PRB
n-1and PRB
n-3form ePDCCH candidate resource collection # 2, and the possible PRB number of notifying user equipment 200 is 1 or 2.Simultaneously, the indicating member 120 of base station 100 defines the field of 1 bit in ePCFICH, for selecting of two candidate's resource collections for transmitting the ePDCCH of current subframe, define in addition the field of 1 bit, for selecting current subframe to be actually used in the number of the PRB of transmission ePDCCH, for example 0 indicate 1 PRB, 2 PRB of 1 indication.
Here, the bit number of the actual use of ePCFICH, can define a maximum according to system bandwidth.For example, the bit number of definition ePCFICH is 4 bits, and wherein 2 bits are used to refer to predefined 4 the candidate's resource collections in base station, and other 2 bits are used to refer to the number that current subframe is actually used in the PRB of transmission ePDCCH.The indicating member 120 of base station 100 can preset 4 different numbers, for example, 00 indicate 4 PRB, 6 PRB of 01 indication, and 8 PRB of 10 indications, 10 PRB of 11 indications, and utilize 2 bits in ePCFICH to indicate one of predefined number.
In addition, Fig. 7 shows according to another example of ePCFICH/ePDCCH configuration of the present invention.As shown in Figure 7, in component carrier frequency, reserved a part of bandwidth is used as the transmission of MTC data, and MTC subscriber equipment can only receive the data in this bandwidth range.Therefore, MTC subscriber equipment cannot correctly receive traditional PCFICH information, cannot know the shared symbolic number of traditional PD CCH in current subframe.Therefore, for the transmission of MTC data service, the indicating member 110 of base station 100 is also configured to: at ePCFICH, comprise the indication to the orthogonal frequency division multiplex OFDM symbolic number for transmitting physical downlink control channel PDCCH.Particularly, can comprise at ePCFICH the field of 2 bits, be used to indicate traditional PD CCH shared OFDM symbolic number in current subframe.As shown in Figure 7, a subframe comprises 14 OFDM symbols, and legacy user's equipment is indicated by PCFICH, knows that traditional PD CCH in this subframe takies the first two OFDM symbol of this subframe, and in this subframe, the transmission of PDSCH is from the 3rd sign-on of this subframe.MTC subscriber equipment, due to its limit bandwidth, cannot obtain for transmitting the OFDM symbolic number of traditional PD CCH from PCFICH.Thereby MTC subscriber equipment is by the above-mentioned field in ePCFICH, obtains the OFDM symbolic number (2 OFDM symbols as shown in Figure 7) that traditional PD CCH takies in current subframe.
Correspondingly, the acquisition unit 220 of UE 200 is also configured to: according to the ePCFICH of decoding, obtain the OFDM symbolic number for transmitting physical downlink control channel PDCCH.Therefore,, for MTC subscriber equipment, by ePCFICH information, can know the original position of valid data in PRB.Thereby bring greater flexibility to the scheduling of MTC data service.
Referring to accompanying drawing, ePDCCH resource allocation methods of the present invention and the flow chart of ePDCCH detection method are described.In the following description, for clear, in conjunction with the specific embodiment of above base station 100 and UE 200, method of the present invention is described.Yet, those skilled in the art will recognize that, specific functional units in conjunction with above base station or UE illustrates that method of the present invention is only used to illustrative purpose, in the situation that for example carrying out implementation method with computer program, do not need the division of this functional unit and assembly completely, but base station or UE make the as a whole method of the present invention that realizes.The all features described that combine with the embodiment of above-mentioned base station 100 and UE 200 are also applicable to following methods embodiment.
Fig. 8 shows according to the flow chart of the resource allocation methods 800 of ePDCCH of the present invention.Method 800 can be carried out by above-mentioned base station 100, comprises the following steps:
At step S810, determining unit 110 is identified for the Physical Resource Block PRB that transmission strengthens Physical Control Format Indicator Channel ePCFICH.
Preferably, determining unit 110 is calculated for transmitting the PRB of ePCFICH based on Cell Identity CI, and the ePCFICH of different districts in same cluster is located in PRB different on frequency domain.Alternatively, determining unit 110 is selected for transmitting the PRB of ePCFICH from a plurality of candidate ePCFICH PRB; Notification unit is notified selected for transmitting the PRB of ePCFICH to user equipment (UE).
At step S820, indicating member 120 use ePCFICH indicate the PRB that strengthens physical downlink control channel ePDCCH for transmitting.
Preferably, selected cell is selected for transmitting the PRB of ePDCCH from a plurality of candidate ePDCCH PRB.
Preferably, indicating member 110 can comprise the indication to the OFDM symbolic number for transmitting physical downlink control channel PDCCH at ePCFICH.
Fig. 9 shows according to the flow chart of the detection method 900 of ePDCCH of the present invention.Method 900 can be carried out by above-mentioned UE 200, comprises the following steps:
At step S910, determining unit 210 is identified for the Physical Resource Block PRB that transmission strengthens Physical Control Format Indicator Channel ePCFICH, so that ePCFICH is decoded.
Preferably, determining unit 210 is calculated for transmitting the PRB of ePCFICH based on Cell Identity CI, and the ePCFICH of different districts in same cluster is located in PRB different on frequency domain.Alternatively, receiving element receives from base station about for transmitting the notice of the PRB of ePCFICH, describedly for transmitting the PRB of ePCFICH, from a plurality of candidate ePCFICH PRB, selects; The notice of determining unit 210 based on received is identified for transmitting the PRB of ePCFICH.
At step S920, obtain unit 220 according to the ePCFICH of decoding, obtain the PRB that strengthens physical downlink control channel ePDCCH for transmitting, to detect ePDCCH.
Preferably, for transmitting the PRB of ePDCCH, from a plurality of candidate ePDCCH PRB, select.
Preferably, obtain unit 220 and can, according to the ePCFICH of decoding, obtain the OFDM symbolic number for transmitting physical downlink control channel PDCCH.
Should be appreciated that, the above embodiment of the present invention can realize by both combinations of software, hardware or software and hardware.For example, the various assemblies of above-described embodiment Zhong base station and subscriber equipment inside can be realized by multiple device, these devices include but not limited to: analog circuit device, digital circuit device, Digital Signal Processing (DSP) circuit, programmable processor, application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA), programmable logic device (CPLD), etc.
，“ base station in this application " refer to mobile data and the control switching point (CSP) with larger transmitting power and wider area coverage, comprise the functions such as resource allocation scheduling, data receiver transmission." subscriber equipment " refers to customer mobile terminal, such as comprising that mobile phone, notebook etc. can carry out with base station or micro-base station the terminal equipment of radio communication.
Although below show the present invention in conjunction with the preferred embodiments of the present invention, one skilled in the art will appreciate that without departing from the spirit and scope of the present invention, can carry out various modifications, replacement and change to the present invention.Therefore, the present invention should not limited by above-described embodiment, and should be limited by claims and equivalent thereof.
Claims (20)
1. a resource allocation methods that strengthens physical downlink control channel ePDCCH, comprises the following steps:
Be identified for the Physical Resource Block PRB that transmission strengthens Physical Control Format Indicator Channel ePCFICH; And
With ePCFICH, indicate for transmitting the PRB of ePDCCH.
2. method according to claim 1, wherein, determining step comprises: based on Cell Identity CI, calculate for transmitting the PRB of ePCFICH, the ePCFICH of different districts in same cluster is located in PRB different on frequency domain.
3. method according to claim 1, wherein, determining step comprises: from a plurality of candidate ePCFICH PRB, select for transmitting the PRB of ePCFICH,
Described method also comprises: to user equipment (UE), notify selected for transmitting the PRB of ePCFICH.
4. also comprise according to the method in any one of claims 1 to 3:
From a plurality of candidate ePDCCH PRB, select for transmitting the PRB of ePDCCH.
5. also comprise according to the method in any one of claims 1 to 3:
At ePCFICH, comprise the indication to the orthogonal frequency division multiplex OFDM symbolic number for transmitting physical downlink control channel PDCCH.
6.Yi Zhong base station, comprising:
Determining unit, is identified for the Physical Resource Block PRB that transmission strengthens Physical Control Format Indicator Channel ePCFICH; And
Indicating member, indicates the PRB that strengthens physical downlink control channel ePDCCH for transmitting with ePCFICH.
7. base station according to claim 6, wherein, determining unit is configured to: based on Cell Identity CI, calculate for transmitting the PRB of ePCFICH, the ePCFICH of different districts in same cluster is located in PRB different on frequency domain.
8. base station according to claim 5, wherein, determining unit is configured to: from a plurality of candidate ePCFICH PRB, select for transmitting the PRB of ePCFICH,
Described base station also comprises: notification unit, to user equipment (UE), notify selected for transmitting the PRB of ePCFICH.
9. according to the base station described in any one in claim 6 to 8, also comprise:
Selected cell is selected for transmitting the PRB of ePDCCH from a plurality of candidate ePDCCH PRB.
10. according to the base station described in any one in claim 6 to 8, wherein, indicating member is also configured to: at ePCFICH, comprise the indication to the orthogonal frequency division multiplex OFDM symbolic number for transmitting physical downlink control channel PDCCH.
11. 1 kinds of detection methods that strengthen physical downlink control channel ePDCCH, comprise the following steps:
Be identified for the Physical Resource Block PRB that transmission strengthens Physical Control Format Indicator Channel ePCFICH, so that ePCFICH is decoded; And
According to the ePCFICH of decoding, obtain for transmitting the PRB of ePDCCH, to detect ePDCCH.
12. methods according to claim 11, wherein, determining step comprises: based on Cell Identity CI, calculate for transmitting the PRB of ePCFICH, the ePCFICH of different districts in same cluster is located in PRB different on frequency domain.
13. methods according to claim 11, also comprise:
From base station, receive about for transmitting the notice of the PRB of ePCFICH, describedly for transmitting the PRB of ePCFICH, from a plurality of candidate ePCFICH PRB, select;
Wherein, determining step comprises: the notice based on received is identified for transmitting the PRB of ePCFICH.
14. according to claim 11 to the method described in any one in 13, wherein, for transmitting the PRB of ePDCCH, from a plurality of candidate ePDCCH PRB, selects.
15. according to claim 11 to the method described in any one in 13, also comprises:
According to the ePCFICH of decoding, obtain the orthogonal frequency division multiplex OFDM symbolic number for transmitting physical downlink control channel PDCCH.
16. 1 kinds of user equipment (UE)s, comprising:
Determining unit, is identified for the Physical Resource Block PRB that transmission strengthens Physical Control Format Indicator Channel ePCFICH, so that ePCFICH is decoded; And
Obtain unit, according to the ePCFICH of decoding, obtain the PRB that strengthens physical downlink control channel ePDCCH for transmitting, to detect ePDCCH.
17. UE according to claim 16, wherein, determining unit is configured to: based on Cell Identity CI, calculate for transmitting the PRB of ePCFICH, the ePCFICH of different districts in same cluster is located in PRB different on frequency domain.
18. UE according to claim 16, also comprise:
Receiving element ，Cong base station receives about for transmitting the notice of the PRB of ePCFICH, describedly for transmitting the PRB of ePCFICH, from a plurality of candidate ePCFICH PRB, selects;
Wherein, determining unit is configured to: the notice based on received is identified for transmitting the PRB of ePCFICH.
19. according to claim 16 to the UE described in any one in 18, wherein, for transmitting the PRB of ePDCCH, from a plurality of candidate ePDCCH PRB, selects.
20. according to claim 16 to the UE described in any one in 18, wherein, obtains unit and is also configured to:
According to the ePCFICH of decoding, obtain the orthogonal frequency division multiplex OFDM symbolic number for transmitting physical downlink control channel PDCCH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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