WO2011160280A1 - Détermination du niveau d'agrégation - Google Patents

Détermination du niveau d'agrégation Download PDF

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Publication number
WO2011160280A1
WO2011160280A1 PCT/CN2010/074160 CN2010074160W WO2011160280A1 WO 2011160280 A1 WO2011160280 A1 WO 2011160280A1 CN 2010074160 W CN2010074160 W CN 2010074160W WO 2011160280 A1 WO2011160280 A1 WO 2011160280A1
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WO
WIPO (PCT)
Prior art keywords
control channel
downlink control
verification information
pdcch
remote node
Prior art date
Application number
PCT/CN2010/074160
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English (en)
Inventor
Jianghua Liu
Wennstrom Mattias
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to PCT/CN2010/074160 priority Critical patent/WO2011160280A1/fr
Publication of WO2011160280A1 publication Critical patent/WO2011160280A1/fr

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0072—Error control for data other than payload data, e.g. control data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements

Definitions

  • the present invention relates to a method as defined in the preamble of claim 1, i.e. a method of a remote node in a radio communication system, said remote node performing blind detection of a downlink control channel being transmitted from a network node by detecting at least two candidates downlink control channels, wherein said at least two candidate downlink control channels can have at least partly overlapping search spaces, and can each comprise one control channel element, or more than one control channel elements.
  • the present invention relates to a method as defined in the preamble of claim 17, i.e. a method of a network node in a radio communication system, said network node communicating with a remote node in said system, said remote node performing blind detection of a downlink control channel being
  • At least two candidate downlink control channels can have at least partly overlapping search spaces, and can each comprise one control channel element, or more than one control channel elements .
  • the present invention also relates to a remote node as defined in the preamble of claim 23, i.e. a remote node in a radio communication system, said remote node being arranged for performing blind detection of a downlink control channel being transmitted from a network node by detecting at least two candidates downlink control channels, wherein said at least two candidate downlink control channels can have at least partly overlapping search spaces, and can each comprise one control channel element, or more than one control channel elements .
  • the present invention also relates to a network node as
  • a network node in a radio communication system said network node being arranged for communication with a remote node in said system, said remote node being arranged for performing blind detection of a downlink control channel being transmitted from said network node by detecting at least two candidates downlink control channels, wherein said at least two candidate downlink control channels can have at least partly overlapping search spaces, and can each comprise one control channel element, or more than one control channel elements.
  • the present invention also relates to a computer program, and a computer program product.
  • the invention can be implemented in essentially any wireless radio communication system including a network node, such as a Base Station (BS) , a NodeB (NB) , or an eNodeB (eNB) , and a remote node, such as a User Equipment (UE) , a Mobile Station (MS) , or any other device communicating with a network node over a radio interface.
  • a network node such as a Base Station (BS) , a NodeB (NB) , or an eNodeB (eNB)
  • a remote node such as a User Equipment (UE) , a Mobile Station (MS)
  • UE User Equipment
  • MS Mobile Station
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced system
  • eNB e.g. an eNB
  • UE e.g. an eNB
  • specific control channels of the LTE and/or LTE-A systems are used for explaining the invention, these terms should be understood as referring to a network node, a remote node, and general control channels,
  • PDCCH Physical Downlink Control Channel
  • UE User Equipment
  • MIMO Multiple Input Multiple Output
  • PMI Precoding Matrix Indicator
  • rank a rank, and the like, that are being used for downlink communication.
  • PDCCH is UE specific, i.e. it is meant for a certain UE, and is distinguished by a UE specific Cyclic
  • CRC Redundancy Check
  • scheduled UEs are transmitted, and each UE then performs blind detection to search for a specific PDCCH, which is intended for that specific UE by using the UE specific CRC mask.
  • CRC calculation, CRC scrambling, channel coding, and modulation are performed individually for each PDCCH.
  • Each PDCCH belongs to a limited set of Downlink Control
  • DCI Downlink Control Information
  • the UE when the UE attempts to detect a PDCCH from a number of possible transmitted PDCCHs, i.e. a number of candidate PDCCHs, the UE assumes that the known DCI format is used, and utilizes this DCI format when performing demodulation, channel decoding, CRC descrambling by using the UE specific CRC mask, and CRC calculation. If the CRC calculation is correct, the UE will assume that the PDCCH is correctly detected. Hence, this
  • detection of the PDCCH is denoted blind detection since the UE needs to decode multiple hypotheses to find its control
  • one PDCCH comprises building blocks of Control
  • CCEs Channel Elements
  • aggregation size used for transmission of the PDCCH depends on the DCI information payload, and on the path loss to the UE, since a relatively larger aggregation size provides a lower code rate and better protection, which can be useful for a relatively higher path loss.
  • the eNB needs to assign the PDCCHs for the scheduled UEs, and these scheduled PDCCHs might possibly have differing
  • Figure 1 shows an exemplary illustration of possible CCE
  • NACK acknowledgement
  • the eNB then makes a decision for retransmission or new data transmission at the next scheduling instance, according to the principle of Hybrid Automatic Request (H-ARQ) .
  • H-ARQ Hybrid Automatic Request
  • the ACK or NACK for a received PDSCH is transmitted by the UE on a Physical Uplink Control Channel (PUCCH) .
  • PUCCH Physical Uplink Control Channel
  • the PUCCH format la/lb is used for ACK/NACK transmission and
  • ACKs/NACKs from UEs are multiplexed in the form of Code
  • CDM Code Division Multiplexing
  • - n CCE is the index of the first CCE of the PDCCH that carried the PDSCH assignment
  • PUCC is a higher layer configured parameter
  • n (1> PUCC being calculated, is then used for deciding the resource or sequence to be used for the ACK/NACK transmission on the PUCCH.
  • LTE-Advanced is the evolution of LTE, in which the PUCCH format la/lb will still be used and in which multiple transmit antennas are supported for uplink transmission. Also, in LTE-A, transmit diversity is proposed for PUCCH format la/lb for improving the uplink performance. Spatial Orthogonal Resource Transmit Diversity (SORTD) has been chosen as the transmit diversity scheme. SORTD transmission requires two orthogonal sequences, and one sequence per antenna.
  • transmission can be implicitly decided by the indices of two CCEs of the PDCCH.
  • the choice of the first sequence is based on the same implicit decision as used in LTE, i.e. it depends to the first CCE index n CC E -
  • the choice of the second sequence depends on the second CCE index n CCE +l .
  • n PUCCH-Antenna2 n CCE + l+N ⁇ 1 ⁇ PUCCH ⁇
  • This sequence allocation scheme requires that there are at least two CCEs for the used PDCCH. However, in some cases, for example if the payload size of the PDCCH is small and one CCE is sufficient, the PDCCH only has one CCE.
  • the UE If the UE detects that the PDCCH has only one CCE, the UE can fall back to single antenna port transmission for the ACK/NACK transmission.
  • the ACK/NACK transmission scheme will use either SORTD transmission or single antenna port transmission, and the choice between SORTD transmission and single antenna port transmission will be based on the detected number of CCEs. In other words, the choice between SORTD transmission and single antenna port transmission is based on the aggregation level L of the PDCCH.
  • the PDCCH carrying the Downlink Control Information is comprised of a number of CCEs, the number and location of which being unknown to the UE .
  • blind detection must be performed by the UE .
  • the UE For obtaining the DCI and for being able to decide on a transmission scheme for the subsequent PUCCH transmission, the UE has to gain knowledge of the DCI message as well as the aggregation level L of the PDCCH.
  • a PDCCH can by the UE be detected correctly, even though the UE has assumed an
  • the UE can with high probability correctly detect a PDCCH as having a different CCE aggregation level than what was actually used in the PDCCH transmission.
  • the CCE aggregation level of the PDCCH implicitly determines the transmission mode to be used for the PUCCH, this faulty CCE aggregation level assumption may lead to a wrong decision in the UE for the PUCCH transmission scheme to be used.
  • the eNB will of course know which aggregation level it has used for transmitting the PDCCH, and when the UE make such a wrong decision, the eNB and the UE will have different understandings on the transmission scheme to be used. Thereby, the transmission and reception performance will be degraded due to the mismatched transmitter and receiver, i.e. to the mismatched remote node and network node. Aim and most important features of the invention
  • the object is also achieved by the above mentioned remote node according to the characterizing portion of claim 23, i.e. the remote node comprising determination means, arranged for determining if said downlink control channel includes one control channel element, or more than one control channel elements, by utilization of a verification information being included in said downlink control channel.
  • the object is also achieved by the above mentioned network node according to the characterizing portion of claim 24, i.e. the network node comprising verification information
  • transmission means arranged for including a verification information in said downlink control channel, said verification information being usable in said remote node for determining if said downlink control channel includes one control channel element, or more than one control channel elements .
  • the invention relates to the downlink control channel
  • a remote node receives the assigned control channel and decides on a transmission scheme to be used based to the detected control channel .
  • the determination of the number of CCEs being included in the downlink control channel according to the method, the network node, and the remote node of the invention are characterized in that verification information is included in the downlink control channel, and in that the remote node can utilize this verification information for determining if the downlink control channel includes one control channel element or if the downlink control channel includes at least two control channel elements.
  • the verification information relating to the number of control channel elements being included in the downlink can be used for determining the transmission scheme to be used when transmitting ACK/NACK in the uplink control channel.
  • both the network node and the remote node will have the same opinion about which transmission scheme to be used for the uplink control channel.
  • Such transmission schemes to be used for the uplink control channel can include single antenna transmission schemes and SORTD transmission, and scheme to actually be used has to be chosen from these possible schemes. Therefore, the verification information, which according to an embodiment comprises one bit encoded information in the downlink control channel, can be seen to represent single antenna port transmission or SORTD transmission for the uplink control channel, under the assumption that the single antenna port transmission corresponds to one CCE in the downlink control channel, and that the SORTD transmission corresponds to more than one CCEs in the downlink control channel.
  • the one bit information in PDCCH when the PDCCH has only one CCE, shall represent that the remote node shall use single antenna port transmission for PUCCH . Otherwise, when the PDCCH has more than one CCE, the one bit information in PDCCH shall represent that the remote node shall SORTD transmission for PUCCH.
  • the invention completely solves the confusion problem being related to the number of CCEs in the PDCCH, and the confusion problem being related to the transmission scheme to be used. Also, in comparison to LTE Rel-8, there are not any changes regarding CCE assignment at the eNB side. Also the blind detection procedure at the UE side is unchanged. Detailed exemplary embodiments and advantages of the number of CCE determination according to the invention will now be described with reference to the appended drawings illustrating some preferred embodiments.
  • Fig. 1 shows an exemplary illustration of a CCE assignment.
  • Fig. 2 shows an exemplary illustration of search spaces.
  • Fig. 3 shows an exemplary illustration of UE-specific search spaces .
  • Fig. 4 shows an exemplary illustration of Case 1.
  • Fig. 5 shows an exemplary illustration of Case 2-1.
  • Fig. 6 shows an exemplary illustration of Case 2-2.
  • Fig. 7 shows a flow chart diagram for a method of the
  • Fig. 8 schematically shows a radio communication system according to the invention.
  • the search space is defined to be UE-specific, and the number of PDCCH candidates in the UE-specific search space S L are 6 candidates with 1 CCE, 6 candidates with 2 CCEs, 2 candidates with 4 CCEs, and 2 candidates with 8 CCEs, respectively.
  • the UE-specific search space S L is determined by a UE ID, a sub-frame index, and a CCE aggregation level.
  • An example of a UE-specific search space with a restricted number of PDCCH candidates is illustrated in Figure 3.
  • For the UE-specific search space S L it is possible that two or more different CCE aggregation level search spaces overlap each other, i.e. two or more candidate PDCCHs can overlap each other in the search spaces as is shown in figure 3. When the overlap is present and the PDCCH is assigned in the
  • the blind detection may result in a network node and UE confusion problem being related to the number of CCEs used in the PDCCH.
  • the PDCCH can be correctly detected under the assumption of two or more different aggregation levels, which might lead to
  • one PDCCH with aggregation level 1, i.e. L 2, can be transmitted by a network node on CCE 2 in figure 3.
  • CCE 2 is located both in the PDCCH candidate of UE-specific search spaces S 1 and S 2 .
  • this second candidate PDCCH may also be correctly detected. If this second candidate PDCCH is correctly detected by the UE, the UE will assume that the PDCCH it is to receive comprises two CCEs (CCE 2 and CCE 3) . Here, the network node will know that the PDCCH includes only CCE 2, but the UE will believe that the PDCCH includes both CCE 2 and CCE 3.
  • the UE believes that the PDCCH includes two or more CCEs, two CDM code sequences will be implicitly determined by the two or more CCEs. These two code sequences are then used by the UE for SORTD transmission of the ACK/NACK.
  • SORTD For the ACK/NACK transmission scheme in the uplink, either SORTD or single antenna port transmission is utilized depending on the number of detected CCEs.
  • the network node will expect a single antenna port transmission, since it knows that the PDCCH includes only one CCE. But, the UE will utilize SORTD transmission utilizing two antennas, since it believes that two CCEs were included in the PDCCH.
  • the UE also succeeds in correctly detecting a candidate PDCCH having two or more CCEs under the incorrect assumption that it only includes one CCE.
  • the subsequent CCE index numbering n C cE+l is empty or assigned to a PDCCH of another UE, there are two corresponding sub-cases related to case 2.
  • the subsequent CCE index numbering n CC E+l is empty.
  • the subsequent CCE includes a PDCCH for intended for another UE, or includes e.g. an uplink grant for the same UE, detection of this subsequent CCE will cause so much interference that the UE rather easily can deduce that this detection is not correct.
  • CCE 4 and CCE 5 in figure 6 can be correctly detected by the UE assuming that it includes only one CCE, i.e. as being in search space S 1 , with high probability, if the payload size of the PDCCH is small and has a low coding rate, or has a high SNR.
  • a solution to the problem of case 2 is presented, whereby verification information is included in the downlink control channel, i.e. in the PDCCH.
  • This verification information can then be used in the remote node, i.e. in the UE, when it determines if the downlink control channel includes one control channel element or more than one control channel elements.
  • information being related to whether the PDCCH includes one CCE or includes more than one CCE, i.e. the verification information is encoded and
  • the network node i.e. the eNB .
  • This verification information can then, in the UE, be used for determining if the number of CCEs being included in the PDCCH is one CCE, or more than one CCEs. Thereby the confusion
  • the remote node utilizes both the blind detection of the at least two
  • the verification information when it determines the number of CCEs included in the PDCCH, i.e. when it determines if the downlink control channel includes one control channel element or if it includes more than one control channel elements.
  • the verification information is defined to have higher priority than the blind detection.
  • the number of CCEs indicated by the verification indication will conquer the number of CCEs being indicated by the blind detection.
  • the blind detection and the verification information can be used for confirming each other's indications. There are basically four different combinations of indications based on both the blind detection and the verification
  • L denotes the number of CCEs indicated by the blind detection.
  • the UE determines that the downlink control channel includes one control channel element.
  • the UE determines that the downlink control channel includes more than one control channel elements.
  • L n C cE#—# n C cE+L-l
  • the verification information also indicates that the PDCCH is comprised of more than one CCE
  • the UE determines that the downlink control channel includes more than one CCEs.
  • the UE determines that the downlink control channel includes more than one control channel elements.
  • L l (IICCE) # and if the verification information indicates that the PDCCH is comprised of more than one CCE, the UE determines that the downlink control channel includes more than one CCEs.
  • the priority rule saying that the verification information has higher priority than the blind detection, if they provide mutually contradictory indications, is used. The use of this priority rule solves a possible confusion related to the number of CCEs included in the PDCCH .
  • the UE determines that the downlink control channel includes one control channel element.
  • L n C cE#—# n C cE+L-l
  • the UE determines that the downlink control channel includes one CCE.
  • the aforementioned CCE detection confusion problem can cause the UE to make a wrong decision when choosing the transmission scheme to be used for ACK/NACK PUCCH transmission, and the transmission resource (s) used for this ACK/NACK PUCCH
  • the PUCCH transmission is a response to the scheduled PDSCH, which is pointed out by the PDCCH in the case of dynamic scheduling, the PUCCH shall be associated with the PDCCH.
  • the remote node selects a transmission mode to be used for an uplink control channel, wherein this selection is based on the determination of the number of CCEs being included in the downlink control channel.
  • the selected transmission mode includes transmission utilizing one single antenna port, i.e. single port antenna transmission is used for transmission of the ACK/NACK PUCCH .
  • the code sequence being used for this transmission by the remote node is determined by the remote node based on the one single control channel element n CC E ⁇
  • the code sequence is determined by the remote node based on the one single control channel element n CC E ⁇
  • the selected transmission mode includes transmission utilizing two antenna ports for transmission of the ACK/NACK PUCCH.
  • the code sequences transmission resources can implicitly be determined from the more than one
  • one bit information i.e. the verification information
  • the verification information can be encoded and included in the PDCCH to verify if the PDCCH is comprised of one CCE, or more than one CCE .
  • the verification information can assist the UE to determine the number of CCEs being included in the PDCCH and to make a
  • the UE can read the CCE
  • the UE can easily determine the number of CCEs included in the PDCCH, and thus the transmission scheme to be used for the PUCCH. From this determination, also the transmission resource (s) to be used for the PUCCH can be identified, since they are implicitly indicated.
  • the transmission scheme to be used for the PUCCH is based on this priority rule. From this determination, also the transmission resource (s) to be used for this transmission can be determined.
  • the CCE verification information being encoded and included in the PDCCH can assist SORTD configured UEs to make a correct decision for PUCCH transmission scheme and for PUCCH resource (s) to be used.
  • the verification information is included in at least one
  • an explicit bit is added into the PDCCH to be used for indicating if the PDCCH comprises one CCE, or more than one CCEs .
  • the explicit bit values ⁇ 1' and '0' can represent that there is only one CCE and that there are more than one CCEs, respectively, or vice versa.
  • the new added explicit bit is only valid when the UE is configured to be in a SORTD mode for PUCCH transmission. For the case where the UE is configured to be in a single antenna port mode for PUCCH transmission, this explicit bit can be reserved or removed from the PDCCH.
  • the verification information is included in at least one Cyclic Redundancy
  • PDCCH CRC masks are defined to convey the verification information.
  • the two defined CRC masks can then be used to further scramble the PDCCH in addition to UE ID scrambling.
  • the two CRC masks can be
  • the SORTD configured UE needs to test the two hypotheses, i.e. needs to test XI and X2 , to obtain the CCE verification information.
  • the verification information is included in at least one spare bit of the downlink control channel.
  • some of the information elements (IE) of the PDCCH can be reused to convey the PDCCH CCE verification information. For example, there is a 2 or 4 bits precoding matrix indicator (PMI) in the Rel-8 PDCCH format IB.
  • PMI precoding matrix indicator
  • the spare PMI bits can be reused to indicate if the PDCCH comprises one CCE, or more than one CCEs .
  • Figure 7 shows a flow chart diagram of a method of the
  • a network node includes a verification information in a downlink control channel it transmits to a remote node in the radio
  • the remote node uses this verification information when
  • the remote node determining the number of control channel elements being included in the downlink control channel received. As stated above, this determined number of control channel elements can then by the remote node be used e.g. for selecting a suitable transmission scheme.
  • the foregoing embodiments or part of the procedures may be implemented through programs instructing related hardware means and that the program can be stored on a computer readable storage media.
  • the method of the invention can be implemented by a computer program, having code means, which when run in a
  • the computer program is included in a computer
  • the computer readable medium may consist of essentially any memory, such as a ROM (Read-Only Memory) , a PROM (Programmable Read-Only
  • EPROM Erasable PROM
  • Flash memory an EEPROM (Electrically Erasable PROM), or a hard disk drive.
  • EEPROM Electrically Erasable PROM
  • a remote node which comprises determination means.
  • This determination means is arranged for determining if the downlink control channel includes one
  • control channel element or more than one control channel elements by utilization of the verification information being included in the downlink control channel.
  • a network node which comprises verification information transmission means.
  • This verification information transmission means is arranged for including
  • This verification information is then, as was described above used by the remote node for determining if the downlink control channel includes one control channel element, or if it
  • Figure 8 schematically illustrates a radio communication
  • the hardware means 811 being a
  • the hardware means 811 is, when being e.g. a processor, a DSP, a computer or the like,
  • computer readable storage media 812 includes ROM/RAM, soft discs, Compact Disk, etc., and is arranged for providing the hardware means 811 with instructions needed for performing the method of the invention, i.e. for arranging the network node with verification information transmission means, which is arranged for including a verification information in the
  • the hardware means 821 being a computer, a processor, a DSP (Digital Signal
  • an ASIC application Specific Integrated Circuit
  • hardware means 821 is, when being e.g. a processor, a DSP, a computer or the like, connected to the computer readable
  • the computer readable storage media 822 includes ROM/RAM, soft discs, Compact Disk, etc., and is
  • instructions needed for performing the method of the invention i.e. for arranging the remote node as having determination means, which is arranged for determining if the downlink control channel includes one control channel element, or more than one control channel elements by utilization of a

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention concerne un procédé amélioré de nœud distant et de nœud réseau dans un système de communication radio. Le nœud distant effectue une détection aveugle d'un canal de commande de liaison descendante qui est transmis depuis un nœud de réseau en détectant au moins deux canaux de commande de liaison descendante candidats. Les au moins deux canaux de commande de liaison descendante candidats peuvent avoir des espaces de recherche qui se chevauchent au moins partiellement, et peuvent comprendre chacun un élément de canal de commande, ou plus d'un élément de canal de commande. Selon l'invention, le nœud distant détermine si le canal de commande de liaison descendante comprend un élément de canal de commande, ou s'il comprend plus d'un élément de canal de commande, par l'utilisation d'une information de vérification qui est comprise dans le canal de commande de liaison descendante.
PCT/CN2010/074160 2010-06-21 2010-06-21 Détermination du niveau d'agrégation WO2011160280A1 (fr)

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
WO2013115580A1 (fr) * 2012-01-31 2013-08-08 엘지전자 주식회사 Procédé et dispositif pour la détermination de port d'antenne de signal de référence pour canal de commande de liaison descendante dans un système de communications sans fil
WO2017171327A3 (fr) * 2016-03-28 2018-09-07 엘지전자 주식회사 Procédé de transmission/réception d'informations de commande dans un système de communication sans fil, et appareil correspondant
CN109429316A (zh) * 2017-08-29 2019-03-05 中国移动通信有限公司研究院 一种进行盲检测的方法和设备
WO2020088762A1 (fr) * 2018-10-31 2020-05-07 Huawei Technologies Co., Ltd. Nœud d'accès au réseau et dispositif client pour la réception efficace de canal de commande
CN111211872A (zh) * 2020-01-09 2020-05-29 重庆邮电大学 5G中SNR均值反馈与CCEs能量判决的PDCCH盲检方法

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WO2009086859A1 (fr) * 2008-01-05 2009-07-16 Panasonic Corporation Signalisation par canal de commande utilisant des points de code pour indiquer le mode de planification
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