CN103052160A - Communication method for enhanced physical downlink control channel and user equipment - Google Patents
Communication method for enhanced physical downlink control channel and user equipment Download PDFInfo
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- CN103052160A CN103052160A CN2011103066967A CN201110306696A CN103052160A CN 103052160 A CN103052160 A CN 103052160A CN 2011103066967 A CN2011103066967 A CN 2011103066967A CN 201110306696 A CN201110306696 A CN 201110306696A CN 103052160 A CN103052160 A CN 103052160A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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Abstract
The invention discloses a communication method for enhanced a physical downlink control channel, and the method comprises the following steps of receiving information of an enhanced physical downlink control channel (ePDCCH), wherein a downlink control signaling DCI of the ePDCCH information comprises the information for indicating the resource occupation of a physical downlink shared channel (PDSCH); acquiring an initial position of the PDSCH according to a preset ePDCCH position rule, obtaining the resource occupation information of the PDSCH according to the information of the resource occupation of the PDSCH and the initial position of the PDSCH; and demodulating the PDSCH at the resource occupied by the PDSCH. Correspondently, the invention also provides user equipment for the ePDCCH. Due to the adoption of the communication method and the user equipment, the blind detection operation of the ePDCCH and the expenditure of the control signaling can be reduced, and the data throughput of the system can be improved.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of communication means and subscriber equipment for strengthening Physical Downlink Control Channel.
Background technology
LTE Rel-11 (Long Term Evolution, the 3GPP Long Term Evolution) during the downlink service data of system transmits before, a plurality of UE (User Equipment in residential quarter, subscriber equipment) dynamic multiplexing running time-frequency resource, which running time-frequency resource certain UE takies is indicated by PDCCH corresponding to this UE (Physical Downlink ControlChannel, Physical Downlink Control Channel).The PDCCH of all UE generally is positioned at front 1 to 3 OFDM (Orthogonal Frequency Division Multiplexing of a subframe, OFDM) in the symbol (Symbol), be used to indicate PDSCH and other signalings of each UE in current subframe, such as information such as ascending resource distribution, one of them subframe comprises 14 OFDM Symbol altogether, and duration is 1ms (millisecond).The PDCCH resource that each UE need to intercept also is dynamic change, and each UE need to carry out the PDCCH information that blind Detecting up to 44 times obtains corresponding this UE, further obtains PDSCH and other signaling informations of corresponding this UE by PDCCH again.Length etc. causes the operand of PDCCH blind Detecting larger behind multiple format, a plurality of original position, the Multi-encoding owing to PDCCH has.
Consider the capacity of PDCCH to the restriction of throughput of system raising, 3GPP has proposed ePDCCH (Enhanced Physical Downlink Control Channel strengthens Physical Downlink Control Channel).EPDCCH is newly-increased a kind of main PDCCH (Primary PDCCH) in the PDCCH zone of former R10, and its length is shorter, is used to indicate some parameters about ePDCCH, as demodulation ePDCCH parameter.EPDCCH is placed on the PDSCH zone of former R10, the content class of PDCCH carrying seemingly among the content of its carrying and the former R10, length is longer, comprise the resource indication of PDSCH place, the PMI that PDSCH is corresponding (Precoding MatrixIndicator, pre-coding matrix index), RI (Rank Indicator, the order index), MCS (Modulationand Coding Scheme, modulation and coding standard), the parameter such as HARQ (Hybrid Automatic RepeatRequest, mixed automatic retransfer request).The position of Primary PDCCH is generally more fixing, without blind Detecting or only need the blind Detecting of very little operand; And ePDCCH blind Detecting operand is larger, thereby the operand that how to reduce ePDCCH blind check measurement is the problem of needing at present solution badly.
Summary of the invention
The embodiment of the invention provides a kind of communication means and subscriber equipment for strengthening Physical Downlink Control Channel for addressing the above problem, can reduce the operand of ePDCCH blind Detecting, and can reduce the expense of system control signaling, thereby improve the data throughout of system.
The embodiment of the invention provides a kind of communication means for strengthening Physical Downlink Control Channel, and described method comprises:
Receive the Physical Downlink Control Channel ePDCCH information that strengthens, the descending control signaling DCI of wherein said ePDCCH information comprises the shared resource size information of indication Physical Downlink Shared Channel PDSCH;
Obtain the original position of PDSCH according to the ePDCCH location rule that sets in advance, obtain the shared resource information of PDSCH in conjunction with the original position of the shared resource size information of described PDSCH and described PDSCH;
At the demodulation PDSCH of the shared Energy Resources Service of described PDSCH.
Correspondingly, the embodiment of the invention also provides a kind of subscriber equipment for strengthening Physical Downlink Control Channel, and described subscriber equipment comprises:
Receiving element is used for receiving the Physical Downlink Control Channel ePDCCH information that strengthens, and the descending control signaling DCI of wherein said ePDCCH information comprises the shared resource size information of indication Physical Downlink Shared Channel PDSCH;
Determining unit is used for obtaining according to the ePDCCH location rule that sets in advance the original position of PDSCH, obtains the shared resource information of PDSCH in conjunction with the original position of the shared resource size information of described PDSCH and described PDSCH;
Demodulating unit is used at the demodulation PDSCH of the shared Energy Resources Service of described PDSCH.
Implement the embodiment of the invention, has following beneficial effect: utilize ePDCCH and PDSCH strong correlation characteristic, need not in ePDCCH, to comprise the PDSCH original position bits that indicates UE by PDSCH position and the ePDCCH position corresponding relation acquisition PDSCH original position that sets in advance, can greatly reduce like this operand of ePDCCH blind Detecting, can reduce again the expense of system control signaling, thereby improve the data throughout of system.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 illustrates the schematic flow sheet according to the communication means that is used for enhancing physics down channel of embodiment of the present invention.
Fig. 2 illustrates the structural representation according to the sub-frame information that is used for enhancing physics down channel of embodiment of the present invention.
Fig. 3 illustrates the structural representation according to the subscriber equipment that is used for enhancing physics down channel of embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Referring to Fig. 1, illustrate the schematic flow sheet according to the communication means that is used for enhancing physics down channel of embodiment of the present invention, the concrete steps of this communication means can comprise:
S100 receives the Physical Downlink Control Channel ePDCCH information that strengthens, and the descending control signaling DCI of wherein said ePDCCH information comprises the shared resource size information of indication Physical Downlink Shared Channel PDSCH;
S102 obtains the original position of PDSCH according to the ePDCCH location rule that sets in advance, and obtains the shared resource information of PDSCH in conjunction with the original position of the shared resource size information of described PDSCH and described PDSCH;
S104 is at the demodulation PDSCH of the shared Energy Resources Service of described PDSCH.
In the embodiment of the present invention, the shared running time-frequency resource of ePDCCH and PDSCH is close, because they mail to same UE, the various senior lift-off technology that is applicable to PDSCH is equally applicable to the emission of ePDCCH, thereby transmitting apparatus is thought and the PDSCH resource applicable to this UE channel also is applicable to ePDCCH.Only comprise the shared resource size of PDSCH among this ePDCCH, and do not comprise the original position indication bit (bits) of PDSCH, the original position of PDSCH specifically can be obtained according to the PDSCH position that sets in advance and the ePDCCH position rule of correspondence.Obtain the original position of PDSCH according to the PDSCH position that sets in advance and the ePDCCH position rule of correspondence, DCI (Downlink Control Information in conjunction with ePDCCH, descending control signaling) the shared resource size information of the PDSCH that comprises in can obtain the shared resource information of PDSCH, comprise PDSCH start position information and shared resource size information, thereby make things convenient for demodulation operation.With the LTE20M bandwidth, corresponding 110PRB (Physical Resource Block, Physical Resource Block) is example, in original ePDCCH lattice content, need with Ceil[log2 (110)]=7bits represents the PDSCH start position information of this UE, uses Ceil[log2 (110) again]=7bits represents the number of the shared PRB of PDSCH of this UE.Need altogether 7+7=14bits to represent the shared resource information of PDSCH; And the method for the employing embodiment of the invention, still with LTE 20M bandwidth, corresponding 110PRB is example, the PDSCH original position of this UE can be obtained by the position of ePDCCH, the start position information that no longer need in the content of ePDCCH, comprise PDSCH, only need with Ceil[log2 (110)]=7bits represents the number of the shared PRB of PDSCH of this UE, thereby can save 7bits.Because the contained bit number of the ePDCCH that transmitting apparatus is launched reduces, and under identical power and time-frequency total resources, can give the more power of every Bit Allocation in Discrete and running time-frequency resource, thereby the reliability of the ePDCCH that the raising subscriber equipment receives.
In some execution modes of the present invention, the ePDCCH location rule that sets in advance comprises that the original position of PDSCH is the end position precalculated position afterwards of ePDCCH information.In the other execution mode, the ePDCCH location rule that sets in advance comprises that the end position of PDSCH is the original position precalculated position before of ePDCCH information.How PDSCH stipulates and can be set according to the actual design needs by those skilled in the art with respect to the predeterminated position of ePDCCH, for example, the end position of PDSCH can be adjacent with the original position of ePDCCH information, and perhaps the end position of the original position of PDSCH and ePDCCH information is adjacent.Primary PDCCH, ePDCCH and the schematic diagram that concerns between the PDSCH in the embodiment of the present invention can be as shown in Figure 2, can according to the information of the relevant parameter acquisition of information ePDCCH among the Primary PDCCH, can obtain PDSCH for information about again according to the relevant parameter information of ePDCCH.
Because ePDCCH and PDSCH mail to same UE in the embodiment of the present invention, the emission mode that ePDCCH adopts is consistent with PDSCH, and the various senior lift-off technology of applicable PDSCH also was applicable to the ePDCCH emission originally, thereby be fit to the corresponding PMI of PDSCH, RI, the MCS of this UE, be equally applicable to mail to the ePDCCH of this UE.In the embodiments of the present invention, PMI, RI, MCS information are placed among the Primary PDCCH, to not contain PMI, RI, MCS among the ePDCCH, in subscriber equipment, PMI, RI, MCS both be used for demodulation ePDCCH, be used for again demodulation PDSCH, can greatly reduce like this operand of ePDCCH blind Detecting.
Below with execution mode the communication means embodiment for strengthening Physical Downlink Control Channel provided by the invention is illustrated by reference to the accompanying drawings, below in conjunction with drawings and embodiments the subscriber equipment embodiment for strengthening Physical Downlink Control Channel provided by the invention is described.
Referring to Fig. 3, illustrate the structural representation according to the subscriber equipment that is used for enhancing physics down channel of embodiment of the present invention, the subscriber equipment 300 that should be used for the enhancing Physical Downlink Control Channel comprise:
Receiving element 302 is used for receiving the Physical Downlink Control Channel ePDCCH information that strengthens, and the descending control signaling DCI of wherein said ePDCCH information comprises the shared resource size information of indication Physical Downlink Shared Channel PDSCH;
Determining unit 304 is used for obtaining according to the ePDCCH location rule that sets in advance the original position of PDSCH, obtains the shared resource information of PDSCH in conjunction with the original position of the shared resource size information of described PDSCH and described PDSCH;
In the embodiment of the present invention, the shared running time-frequency resource of ePDCCH and PDSCH is close, because they mail to same UE, the various senior lift-off technology that is applicable to PDSCH is equally applicable to the emission of ePDCCH, thereby transmitting apparatus is thought and the PDSCH resource applicable to this UE channel also is applicable to ePDCCH.Only comprise the shared resource size of PDSCH among this ePDCCH, and do not comprise the original position indication bits of PDSCH, the original position of PDSCH specifically can be obtained according to the PDSCH position that sets in advance and the ePDCCH position rule of correspondence.Obtain the original position of PDSCH according to the PDSCH position that sets in advance and the ePDCCH position rule of correspondence, the shared resource size information of the PDSCH that comprises among the DCI in conjunction with ePDCCH can obtain the shared resource information of PDSCH, comprise PDSCH start position information and shared resource size information, thereby make things convenient for demodulation operation.With LTE 20M bandwidth, corresponding 110PRB is example, in original ePDCCH lattice content, need with Ceil[log2 (110)]=7bits represents the PDSCH start position information of this UE, uses Ceil[log2 (110) again]=7bits represents the number of the shared PRB of PDSCH of this UE.Need altogether 7+7=14bits to represent the shared resource information of PDSCH; And the method for the employing embodiment of the invention, still with the LTE20M bandwidth, corresponding 110PRB is example, the PDSCH original position of this UE can be obtained by the position of ePDCCH, the start position information that no longer need in the content of ePDCCH, comprise PDSCH, only need with Ceil[log2 (110)]=7bits represents the number of the shared PRB of PDSCH of this UE, thereby can save 7bits.Because the contained bit number of the ePDCCH that transmitting apparatus is launched reduces, and under identical power and time-frequency total resources, can give the more power of every Bit Allocation in Discrete and running time-frequency resource, thereby the reliability of the ePDCCH that the raising subscriber equipment receives.
In some execution modes of the present invention, the ePDCCH location rule that sets in advance comprises that the original position of PDSCH is the end position predeterminated position afterwards of ePDCCH information.In the other execution mode, the ePDCCH location rule that sets in advance comprises that the end position of PDSCH is the original position predeterminated position before of ePDCCH information.Primary PDCCH, ePDCCH and the schematic diagram that concerns between the PDSCH in the embodiment of the present invention can be as shown in Figure 2, can according to the information of the relevant parameter acquisition of information ePDCCH among the Primary PDCCH, then can obtain PDSCH for information about again according to the relevant parameter information of ePDCCH.
Because ePDCCH and PDSCH mail to same UE in the embodiment of the present invention, the emission mode that ePDCCH adopts is consistent with PDSCH, and the various senior lift-off technology of applicable PDSCH also was applicable to the ePDCCH emission originally, thereby be fit to the corresponding PMI of PDSCH, RI, the MCS of this UE, be equally applicable to mail to the ePDCCH of this UE.In the embodiments of the present invention, subscriber equipment also can comprise parameter acquiring unit 308, for the parameter of obtaining by Primary PDCCH for demodulation ePDCCH, the parameter that wherein is used for demodulation ePDCCH comprises pre-coding matrix index PMI, order index RI and modulation and coding standard MCS at least one.Because PMI, RI, MCS information are placed among the Primary PDCCH, to not contain PMI, RI, MCS among the ePDCCH, the demodulating unit of subscriber equipment both had been used for demodulation ePDCCH with PMI, RI, MCS, was used for again demodulation PDSCH, can greatly reduce like this operand of ePDCCH blind Detecting.
In sum, the communication means and the subscriber equipment that are used for ePDCCH that the embodiment of the invention provides utilize ePDCCH and PDSCH strong correlation characteristic, thereby need not in ePDCCH, to comprise the PDSCH original position bits that indicates UE by PDSCH position and the ePDCCH position corresponding relation acquisition PDSCH original position that sets in advance, simultaneously the PMI that carries among the original ePDCCH, RI, MCS information is placed among the PrimaryPDCCH, subscriber equipment is with described PMI, RI, MCS information both had been used for demodulation ePDCCH, be used for again demodulation PDSCH, can greatly reduce like this operand of ePDCCH blind Detecting, can reduce again the expense of system control signaling, thereby improve the data throughout of system.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process such as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or store-memory body (Random Access Memory, RAM) etc. at random.
Above disclosed is a kind of preferred embodiment of the present invention only, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (10)
1. communication means that be used for to strengthen Physical Downlink Control Channel is characterized in that described method comprises:
Receive the Physical Downlink Control Channel ePDCCH information that strengthens, the descending control signaling DCI of wherein said ePDCCH information comprises the shared resource size information of indication Physical Downlink Shared Channel PDSCH;
Obtain the original position of PDSCH according to the ePDCCH location rule that sets in advance, obtain the shared resource information of PDSCH in conjunction with the original position of the shared resource size information of described PDSCH and described PDSCH;
At the demodulation PDSCH of the shared Energy Resources Service of described PDSCH.
2. the method for claim 1 is characterized in that, the described ePDCCH location rule that sets in advance comprises that the original position of PDSCH is the end position predeterminated position afterwards of described ePDCCH information.
3. the method for claim 1 is characterized in that, the described ePDCCH location rule that sets in advance comprises that the end position of PDSCH is the original position predeterminated position before of described ePDCCH information.
4. such as the described method of any one in the claims 1 to 3, it is characterized in that, describedly comprise at the demodulation PDSCH of the shared Energy Resources Service of described PDSCH:
Adopt the parameter that is used for demodulation ePDCCH, at the demodulation PDSCH of the shared Energy Resources Service of described PDSCH, described parameter for demodulation ePDCCH comprises: at least one item of pre-coding matrix index PMI, order index RI and modulation and coding standard MCS.
5. method as claimed in claim 4 is characterized in that, also comprises: obtain described parameter for demodulation ePDCCH by main PDCCH.
6. subscriber equipment that be used for to strengthen Physical Downlink Control Channel is characterized in that described subscriber equipment comprises:
Receiving element is used for receiving the Physical Downlink Control Channel ePDCCH information that strengthens, and the descending control signaling DCI of wherein said ePDCCH information comprises the shared resource size information of indication Physical Downlink Shared Channel PDSCH;
Determining unit is used for obtaining according to the ePDCCH location rule that sets in advance the original position of PDSCH, obtains the shared resource information of PDSCH in conjunction with the original position of the shared resource size information of described PDSCH and described PDSCH;
Demodulating unit is used at the demodulation PDSCH of the shared Energy Resources Service of described PDSCH.
7. subscriber equipment as claimed in claim 6 is characterized in that, the described ePDCCH location rule that sets in advance comprises that the original position of PDSCH is the end position predeterminated position afterwards of described ePDCCH information.
8. subscriber equipment as claimed in claim 6 is characterized in that, the described ePDCCH location rule that sets in advance comprises that the end position of PDSCH is the original position predeterminated position before of described ePDCCH information.
9. such as the described subscriber equipment of any one in the claim 6 to 8, it is characterized in that, described demodulating unit, be used for adopting the parameter that is used for demodulation ePDCCH, at the demodulation PDSCH of the shared Energy Resources Service of described PDSCH, described parameter for demodulation ePDCCH comprises: at least one item of pre-coding matrix index PMI, order index RI and modulation and coding standard MCS.
10. subscriber equipment as claimed in claim 9 is characterized in that, described subscriber equipment also comprises: parameter acquiring unit is used for obtaining described parameter for demodulation ePDCCH by main PDCCH.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110306696.7A CN103052160B (en) | 2011-10-11 | 2011-10-11 | For strengthening communication means and the subscriber equipment of Physical Downlink Control Channel |
| PCT/CN2012/082753 WO2013053322A1 (en) | 2011-10-11 | 2012-10-11 | Communications method and user equipment for enhanced physical downlink control channel |
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| CN201110306696.7A CN103052160B (en) | 2011-10-11 | 2011-10-11 | For strengthening communication means and the subscriber equipment of Physical Downlink Control Channel |
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| WO2019113834A1 (en) * | 2017-12-13 | 2019-06-20 | Qualcomm Incorporated | Techniques for downlink control channel location indication in wireless communications |
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| CN102164416B (en) * | 2011-05-03 | 2014-04-16 | 电信科学技术研究院 | Method, system and equipment for transmitting data |
| CN102170703A (en) * | 2011-05-11 | 2011-08-31 | 电信科学技术研究院 | Method for receiving and transmitting information on physical downlink control channel and equipment thereof |
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| WO2010076300A1 (en) * | 2008-12-30 | 2010-07-08 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for robust transmission of control information in a wireless communication network |
| CN101651995A (en) * | 2009-09-21 | 2010-02-17 | 中兴通讯股份有限公司 | Transmission method and system of downlink control information |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104969638A (en) * | 2013-07-16 | 2015-10-07 | 华为技术有限公司 | Control information transmission method, user equipment, and base station |
| CN109327298A (en) * | 2013-07-16 | 2019-02-12 | 华为技术有限公司 | Control transmission method, user equipment and the base station of information |
| US10524241B2 (en) | 2013-07-16 | 2019-12-31 | Huawei Technologies Co., Ltd. | Control information transmission method, user equipment, and base station |
| CN104969638B (en) * | 2013-07-16 | 2020-02-14 | 华为技术有限公司 | Control information transmission method, user equipment and base station |
| CN111565100A (en) * | 2013-07-16 | 2020-08-21 | 华为技术有限公司 | Control information transmission method, user equipment and base station |
| US10779269B2 (en) | 2013-07-16 | 2020-09-15 | Huawei Technologies Co., Ltd. | Control information transmission method, user equipment, and base station |
| US11464003B2 (en) | 2013-07-16 | 2022-10-04 | Huawei Technologies Co., Ltd. | Control information transmission method, user equipment, and base station |
| WO2019113834A1 (en) * | 2017-12-13 | 2019-06-20 | Qualcomm Incorporated | Techniques for downlink control channel location indication in wireless communications |
| US11445489B2 (en) | 2017-12-13 | 2022-09-13 | Qualcomm Incorporated | Techniques for downlink control channel location indication in wireless communications |
Also Published As
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| CN103052160B (en) | 2015-12-16 |
| WO2013053322A1 (en) | 2013-04-18 |
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Effective date of registration: 20210423 Address after: Unit 3401, unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Donghai community, Xiangmihu street, Futian District, Shenzhen, Guangdong 518040 Patentee after: Honor Device Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |