CN102932299B - A kind of sending method of Physical Downlink Control Channel - Google Patents
A kind of sending method of Physical Downlink Control Channel Download PDFInfo
- Publication number
- CN102932299B CN102932299B CN201110225757.7A CN201110225757A CN102932299B CN 102932299 B CN102932299 B CN 102932299B CN 201110225757 A CN201110225757 A CN 201110225757A CN 102932299 B CN102932299 B CN 102932299B
- Authority
- CN
- China
- Prior art keywords
- pdcch
- control channel
- ccif
- physical downlink
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a kind of transmission method of Physical Downlink Control Channel, A, network side arrange the control channel instructions field CCIF being used to indicate the control information of user equipment (UE), and the OFDM symbol of Physical Downlink Shared Channel PDSCH carries the content of physical downlink control channel PDCCH; B, UE decoding CCIF determines modulation system and the position of control information, obtains the content of PDCCH according to described position in PDSCH.The present invention program can significantly improve the capacity of subframe carrying PDCCH.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of sending method of Physical Downlink Control Channel.
Background technology
The channel architecture of LTERelease8/9/10 as shown in Figure 1.In LTERelease8/9/10, Physical Downlink Control Channel (PDCCH) takies 1-3 OFDM (OFDM) symbol.4 resource elements (RE) form a REG, wherein, Physical Control Format Indicator Channel (PCFICH) accounts for 4 REG, physical mixed automatic repeat request indicating channel (PHICH) accounts for 6-39 REG, each control channel particle (CCE) is made up of 9 REG, get rid of cell-level reference signal (CRS, Cell-specificReferenceSignal) REG that takies of RE and PCFICH that take of port and PHICH, the CCE number provided at most for 10M bandwidth is 42 (2Tx)/37 (4Tx), this some of them CCE will reserve the purposes done as power control and uplink authorization, the UE quantity of the downstream grants of therefore dispatching in a subframe is very limited.
Introduce carrier aggregation in LTERelease10 after, define intersection carrier dispatching, that is, the PDCCH of a community (Cell) is carried on another Cell, dispatches Physical Downlink Shared Channel (PDSCH) resource by the Cell of bear control information.In LTERelease11, need to be optimized multi-user's multiple-input and multiple-output (MU-MIMO) and coordinated multipoint transmission (CoMP), for MU-MIMO and multiple transfer point (TP), there is identical cell ID (CellID), the UE digital display work that every subframe is dispatched simultaneously increases, and this has higher requirement to the capacity of PDCCH and performance.In prior art, the UE limited amount that the PDCCH based on CRS can carry, has a strong impact on the performance gain of MU-MIMO and CoMP.Simultaneously, in isomery scene, PDCCH based on CRS demodulation is disturbed comparatively strong (as lower powered Microcell (RRH/Picocell) disturbs by macrocell), needs eNB to adopt higher CCE quantity transmission PDCCH, this further restricts the transmittability of control channel.
Summary of the invention
The invention provides a kind of sending method of Physical Downlink Control Channel, the capacity of subframe carrying PDCCH can be significantly improved.
The embodiment of the present invention proposes a kind of transmission method of Physical Downlink Control Channel, comprises the steps:
A, network side arrange the control channel instructions field CCIF being used to indicate the control information of user equipment (UE), and the OFDM symbol of Physical Downlink Shared Channel PDSCH carries the content of physical downlink control channel PDCCH;
B, UE decoding CCIF determines modulation system and the position of control information, obtains the content of PDCCH according to described position in PDSCH.
Preferably, the method comprises further: N number of UE is divided into one group, uses identical D-PDCCH Radio Network Temporary Identifier RNTI with group UE.
Preferably, described D-PDCCHRNTI adheres to 16bit cyclic redundancy check (CRC) position CRC.
Preferably, described CCIF comprises: modulation system instructions field, is used to indicate the modulation system that D-PDCCH adopts; D-PDCCH position indication bit, encodes according to available resource quantity.
Preferably, the CCIF cascade of the N number of UE in same group is placed, and the sequence number of UE in group is determined according to user C-RNTI.
Preferably, the CCIF cascade of the N number of UE in same group is placed, and while distribution D-PDCCHRNTI, specifies the sequence number of UE in group.
Preferably, steps A comprises further: a DMRS port number circulation placed;
Step B comprises further: UE obtains the serial number of D-CCE by modular arithmetic according to the value in CCIF, will obtain corresponding DMRS port number.
Preferably, D-PDCCH resource quantity and position are configured by RRC.
Preferably, the control channel particle of definition PDSCH: the unit of control channel particle is P subcarrier, and every RB comprises K control channel particle, UE can use L × P sub-carriers carry D-PDCCH.
As can be seen from the above technical solutions, design con-trol channel instructions field (CCIF) is used to indicate the control information of UE, the content domain information of the Physical Downlink Control Channel of UE is carried on former PDSCH, significantly improve the capacity of subframe carrying PDCCH, be conducive to the introducing of Rel-11MU-MIMO and CoMP enhancing technology.
Accompanying drawing explanation
Fig. 1 is the channel architecture schematic diagram of LTERelease8/9/10;
Fig. 2 is the channel architecture schematic diagram that the embodiment of the present invention proposes;
Fig. 3 is the D-PDCCH instructions field structure chart that the embodiment of the present invention proposes.
Embodiment
The core concept of technical solution of the present invention is: design " control channel instructions field " (CCIF) is used to indicate the control information of UE, this CCIF comprises a small amount of indication information, the information of multiple UE is placed on one group, take the CCE quantity identical with Rel-8/9/10UE, ensure backwards compatibility, control channel instructions field is only placed on UE-specific search volume simultaneously, reduce blind Detecting number of times, the complexity of UE can be reduced and energy efficient, the content domain information of the Physical Downlink Control Channel of UE is carried on former PDSCH, significantly improve the capacity of subframe carrying PDCCH, use the transmission policy based on demodulated reference signal DMRS (DemodulationReferenceSignal) demodulation, namely the scheme (by based on DM-RS demodulation PDCCH) of D-PDCCH is introduced, with in Rel-8/9/10 based on compared with the scheme of the PDCCH of CRS demodulation, beam forming gain can be obtained, improve demodulation performance, be conducive to the introducing of Rel-11MU-MIMO and CoMP enhancing technology, the interference of heterogeneous network to control channel can be reduced simultaneously.
The channel architecture that the embodiment of the present invention proposes as shown in Figure 2.Definition Rel-11UE " control information indicating area " (CCIF), CCIF comprises the indication information of user PDCCH, UE determines corresponding D-PDCCH position according to this information, user first decodes CCIF, determine modulation system and the position of control information, the control channel information of UE is positioned at Rel-8/9/10 data channel (PDSCH), based on DMRS decoding control information, carries out transfer of data according to control information instruction.D-PDCCH does not adopt spatial multiplexing mode, only carries out single layer transmission.UE adopts the PDCCH of Rel-8/9/10 transmission or will indicate according to high-level signaling based on the PDCCH transmission of DMRS.The resource that D-PDCCH is possible and position are configured by RRC.
CCIF is carried on the control channel of Rel-8/9/10, by the control channel processing mode of Rel-8/9/10, with control channel unit (CCE) for unit (possible polymerization grade is 1,2,4,8).
Rel-11UE defines the instruction of new D-PDCCHRNTI for PDCCH.Identical D-PDCCH Radio Network Temporary Identifier (RNTI) is used for 1 group of (comprising N number of) UE, as shown in Figure 3.
D-PDCCH instructions field adopts the processing mode identical with Rel8/9/10, and codes match, to CCE, can ensure backwards compatibility like this.D-PDCCHRNTI adheres to the cyclic redundancy check (CRC) position (CRC) of 16bit, and the control information instructions field of every user comprises:
(1) modulation system instructions field 1bit:0 indicates QPSK, and 1 instruction 16QAM, is used to indicate the modulation system that D-PDCCH adopts.
(2) D-PDCCH position instruction bit, encodes according to available resource quantity.
The CCIF cascade of multiple UE is placed, and sequence has two kinds of solutions:
The sequence number of scheme 1:UE in group is determined according to user C-RNTI
ENB, according to the information bit length of the CCIF of UE, determines the number (N) of the UE that every group comprises, by scheduling, with the C-RNTI of UE to N delivery, the N number of UE selecting modulus value different is one group, places, distribute a D-PDCCHRNTI by ascending concatenated in order.
Scheme 2, while distribution D-PDCCHRNTI, specifies the sequence number of UE in group.
UE adopts D-PDCCHRNTI or C-RNTI (or SPS-RNTI) decoding control information will be configured by RRC in UE-specific search volume.
CCIF instructions field is only placed on UE-specific search volume, UE only detects a kind of CCIF of length, therefore, (candidate's grade is respectively 6 to be respectively 1,2,4,8 for UE-Specific search volume polymerization grade, 6,2,2) blind Detecting number of times is 16 times to the maximum, significantly lower than the blind Detecting number of times of Rel8/9, contribute to the decoding complex degree and the power consumption that reduce UE.
UE, according to D-PDCCHRNTI decoding CCIF information, according to its sequence number, reads CCIF value, determines D-PDCCH position according to this value.
There are two kinds of solutions:
The minimum particle size of scheme 1:D-PDCCH is 1 RB, and the unit namely defined based on the control channel particle (D-CCE) of DM-RS demodulation is that the content of 1 RB, D-PDCCH will carry out rate-matched in 1 RB.D-PDCCH number of resources M and corresponding position are by the semi-static configuration of RRC.In the enough large D-CCE situation of definition, each D-PDCCH is carried in 1 D-CCE can guaranteed performance, and the position Directly solution according to D-PDCCH is adjusted control information by UE.
Scheme 2: distribute the resource of M RB as D-PDCCH, the unit of control channel particle is P subcarrier, every RB comprises K Rel-11 control channel particle (K*P=12), then total M*K D-CCE, the D-PDCCH of UE takies L control channel particle, then UE can use L × P sub-carriers carry D-PDCCH.In the D-CCE situation of definition small scale size, the D-PDCCH of 1 UE can be carried in multiple D-CCE, obtains by blind Detecting for the D-PDCCH accounting for multiple D-CCE, detect number of times and depend on channel situation and D-CCE size, namely when definition 1,2,4,8 D-CCE, UE will start 1 D-CCE according to original position, 2 D-CCE ... 8 D-CCE carry out blind Detecting successively, its control information of demodulation.
In the embodiment of the present invention, implicit is adopted to obtain DM-RS port.
For the D-CCE for transmitting D-PDCCH distributed, by frequency domain from high to low (or from low to high) distribute corresponding DM-RS port numbers, adopt Rel-10 port 7 to port one 4, totally 8 ports, namely the CCE of first D-PDCCH uses the CCE of port 7, second D-PDCCH to use port 8 ...If the D-CCE number distributed is greater than 8, then the circulation of DM-RS port numbers placed, UE obtains the serial number of D-CCE by modular arithmetic according to the value in CCIF, obtain corresponding DM-RS port numbers.
Only dispatch 16QAM modulation system for first D-CCE, if a subframe does not dispatch certain UE, then bit is set to 0 entirely.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (9)
1. a transmission method for Physical Downlink Control Channel, is characterized in that,
A, N number of UE is divided into one group, uses identical D-PDCCH Radio Network Temporary Identifier RNTI with group UE; Network side arranges the control channel instructions field CCIF being used to indicate the control information of user equipment (UE), and the OFDM symbol of Physical Downlink Shared Channel PDSCH carries the content of physical downlink control channel PDCCH;
B, UE decoding CCIF determines modulation system and the position of control information, obtains the content of PDCCH according to described position in PDSCH.
2. method according to claim 1, is characterized in that, described D-PDCCHRNTI adheres to 16bit cyclic redundancy check (CRC) position CRC.
3. method according to claim 1, is characterized in that, described CCIF comprises: modulation system instructions field, is used to indicate the modulation system that D-PDCCH adopts; D-PDCCH position indication bit, encodes according to available resource quantity.
4. method according to claim 1, is characterized in that, the CCIF cascade of the N number of UE in same group is placed, and the sequence number of UE in group is determined according to user C-RNTI.
5. method according to claim 1, is characterized in that, the CCIF cascade of the N number of UE in same group is placed, and while distribution D-PDCCHRNTI, specifies the sequence number of UE in group.
6. method according to claim 1, is characterized in that, steps A comprises further: a DMRS port number circulation placed;
Step B comprises further: UE obtains the serial number of D-CCE by modular arithmetic according to the value in CCIF, will obtain corresponding DMRS port number.
7. method according to claim 1, is characterized in that, D-PDCCH resource quantity and position are configured by RRC.
8. method according to claim 1, it is characterized in that, the control channel particle of definition PDSCH: the unit of control channel particle is P subcarrier, every RB comprises K control channel particle, UE can use L × P sub-carriers carry D-PDCCH, and wherein L is the polymerization grade of the D-PDCCH search volume of UE.
9. the method according to any one of claim 1 to 8, is characterized in that, described control channel instructions field is placed on UE-specific search volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110225757.7A CN102932299B (en) | 2011-08-08 | 2011-08-08 | A kind of sending method of Physical Downlink Control Channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110225757.7A CN102932299B (en) | 2011-08-08 | 2011-08-08 | A kind of sending method of Physical Downlink Control Channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102932299A CN102932299A (en) | 2013-02-13 |
| CN102932299B true CN102932299B (en) | 2015-12-16 |
Family
ID=47647003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110225757.7A Expired - Fee Related CN102932299B (en) | 2011-08-08 | 2011-08-08 | A kind of sending method of Physical Downlink Control Channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102932299B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227281B (en) * | 2014-07-03 | 2018-05-01 | 华为技术有限公司 | Pilot distribution method and device based on MIMO |
| CN105812108B (en) * | 2014-12-30 | 2020-03-20 | 中国电信股份有限公司 | Control signaling sending method, base station, terminal and system of large-scale antenna system |
| EP3253104B1 (en) | 2015-01-29 | 2021-08-25 | Sony Group Corporation | Device and method |
| CN105680996B (en) * | 2016-03-03 | 2019-01-01 | 北京航空航天大学 | PDCCH blind checking method in a kind of LTE system |
| CN107872896B (en) * | 2016-09-23 | 2022-10-21 | 中兴通讯股份有限公司 | Control information transmission method and device |
| MX2019007209A (en) | 2016-12-26 | 2019-08-16 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Wireless communication method, network device and terminal device. |
| CN108462564B (en) * | 2017-02-17 | 2021-01-26 | 中兴通讯股份有限公司 | Control channel resource allocation and wireless communication signal transmission method and device |
| CN108633064A (en) * | 2017-03-24 | 2018-10-09 | 夏普株式会社 | The method and apparatus that multi-beam controls information transmission |
| CN107493145A (en) * | 2017-08-30 | 2017-12-19 | 海信集团有限公司 | A kind of communication means and device of honeycomb Internet of Things |
| PT3627927T (en) * | 2017-09-07 | 2023-06-06 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Information transmission method, device, and system |
| CN111867019B (en) * | 2019-04-30 | 2022-04-08 | 中国移动通信有限公司研究院 | Information transmission method, device, related equipment and storage medium |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404526B (en) * | 2008-11-03 | 2013-05-01 | 中兴通讯股份有限公司 | Descending control information processing method |
| CN102036380B (en) * | 2009-09-27 | 2013-07-31 | 电信科学技术研究院 | Method, system and device for receiving downlink feedback information |
| CN101789823B (en) * | 2010-02-11 | 2017-04-12 | 中兴通讯股份有限公司 | Method and system for transmitting control format indicating value |
| CN101883369B (en) * | 2010-07-06 | 2012-12-19 | 新邮通信设备有限公司 | Blind detection method |
| CN101917765B (en) * | 2010-08-13 | 2015-09-16 | 中兴通讯股份有限公司 | A kind of collocation method of measuring reference signals and system |
| CN102123432B (en) * | 2011-03-29 | 2016-01-06 | 电信科学技术研究院 | A kind of resource instruction of down control channel and detection method, equipment |
| CN102186251B (en) * | 2011-04-29 | 2016-09-28 | 中兴通讯股份有限公司 | The transmission method of Downlink Control Information and system |
| CN102904853B (en) * | 2011-07-27 | 2017-08-22 | 中兴通讯股份有限公司 | Send the method and system that the request of physical mixed adaptive retransmission indicates channel |
-
2011
- 2011-08-08 CN CN201110225757.7A patent/CN102932299B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102932299A (en) | 2013-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102932299B (en) | A kind of sending method of Physical Downlink Control Channel | |
| US10425933B2 (en) | System and method for resource management in a communications system | |
| CN103891353B (en) | The design related to the enhancing control channel of wireless system | |
| CN103999375B (en) | The method and apparatus carrying out esource impact for the physical channel in multi-cell system | |
| CN103812602B (en) | The method and apparatus of blind examination public search space and the specific search space UE | |
| CN105991263B (en) | Downlink control information DCI configuration, downlink data receiving method and device | |
| CN105144621B (en) | The PDSCH transmission scheme with compact down link control information (DCI) format in new carrier type (NCT) in LTE | |
| CN106537999B (en) | Method and apparatus for sending uplink control information in the wireless communication system of the change used for supporting radio resource | |
| CN105027479B (en) | The method and its equipment of down link control information are received by UE in a wireless communication system | |
| CN103477579B (en) | The method and apparatus sending control information in a wireless communication system | |
| CN103907325B (en) | Terminal is allowed to perform the method and its device of Stochastic accessing step in a wireless communication system | |
| CN104937991B (en) | Dynamic time division duplex uplink/downlink configuration with downlink control information | |
| CN102404076B (en) | Information sending and blind-detecting method and equipment | |
| CN104823475B (en) | The method and its device of downlink control channel are monitored in a wireless communication system | |
| CN104113925B (en) | Authorization signaling transmission, acquisition methods and device | |
| CN103546233B (en) | A kind of blinded fashion determines method, blind detection method and device | |
| US20140321370A1 (en) | Rate matching under irregular, sparse, or narrowband signals | |
| CN104145431B (en) | Receive the method and its device of down link signal in a wireless communication system for terminal | |
| CN104380633B (en) | Method and its equipment for sending and receiving EPDCCH | |
| EP2660994B1 (en) | Method and device for allocating reference resource | |
| CN104303440A (en) | Downlink control indication for a stand-alone new carrier type (NCT) | |
| CN104704756B (en) | For receiving and dispatching the method and its equipment of control information | |
| CN104106272A (en) | System information scheduling method and device therefor | |
| CN103797736A (en) | Method for transmitting and receiving control information of a mobile communication system | |
| TW201345170A (en) | Apparatuses, methods, and computer programs for a mobile transceiver and for a base station transceiver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA POTEVIO CO., LTD. Free format text: FORMER OWNER: PUTIAN IT TECH INST CO., LTD. Effective date: 20130909 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20130909 Address after: 100080, No. two, 2 street, Zhongguancun science and Technology Park, Beijing, Haidian District Applicant after: CHINA POTEVIO CO.,LTD. Address before: 100080 Beijing, Haidian, North Street, No. two, No. 6, No. Applicant before: PETEVIO INSTITUTE OF TECHNOLOGY Co.,Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: PUTIAN IT TECH INST CO., LTD. Free format text: FORMER OWNER: CHINA POTEVIO CO., LTD. Effective date: 20131210 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20131210 Address after: 100080 Beijing, Haidian, North Street, No. two, No. 6, No. Applicant after: PETEVIO INSTITUTE OF TECHNOLOGY Co.,Ltd. Address before: 100080, No. two, 2 street, Zhongguancun science and Technology Park, Beijing, Haidian District Applicant before: CHINA POTEVIO CO.,LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |