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WO2013023541A1 - Procédé et dispositif pour transmettre des données de contrôle sur la liaison descendante - Google Patents

Procédé et dispositif pour transmettre des données de contrôle sur la liaison descendante Download PDF

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Publication number
WO2013023541A1
WO2013023541A1 PCT/CN2012/079837 CN2012079837W WO2013023541A1 WO 2013023541 A1 WO2013023541 A1 WO 2013023541A1 CN 2012079837 W CN2012079837 W CN 2012079837W WO 2013023541 A1 WO2013023541 A1 WO 2013023541A1
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Prior art keywords
resource
subrb
cluster
pair
downlink control
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PCT/CN2012/079837
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English (en)
Chinese (zh)
Inventor
张然然
赵锐
林亚男
潘学明
高秋彬
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Publication of WO2013023541A1 publication Critical patent/WO2013023541A1/fr
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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

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a downlink control information transmission method and apparatus.
  • PDCCH Physical Downlink Control Channel
  • SCHSCH Physical Downlink Shared Channel
  • the data forms a TDM (Time Division Multiple) relationship.
  • FIG. 1 is a schematic diagram of a multiplexing relationship between a control region and a data region in a downlink subframe, where a control region for transmitting a PDCCH in an LTE system is formed by a logically divided CCE (Control Channel Element), where CCE The mapping to the RE (Resource Element) uses a fully interlaced approach.
  • the transmission of DCI is also based on CCE.
  • One DCI for one UE can be transmitted in N consecutive CCEs. In LTE system, the possible value of N is 1,2. 4,8, called CCE Aggregation Level.
  • the UE performs a PDCCH blind check in the control area to search whether there is a PDCCH for the PDCCH.
  • the blind detection uses the RNTI (Radio Network Temporary Identifier) of the UE to decode different DCI formats and CCE aggregation levels. If the decoding is correct, the DCI for the UE is received.
  • the LTE UE needs to perform blind detection on the control region for each downlink subframe in the non-DRX (Discontinuous Reception) state to search for the PDCCH.
  • RNTI Radio Network Temporary Identifier
  • CoMP Coordinated Multipoint Transmission/Reception
  • carrier aggregation and other technologies and introduction of RRH (Remote Radio Head) and 8 antennas with the same cell ID (identification), LTE-A (Long Term) Evolution-Advanced, long-term evolution upgrade)
  • RRH Remote Radio Head
  • LTE-A Long Term Evolution-Advanced, long-term evolution upgrade
  • the capacity and transmission efficiency of the PDSCH of the system will be greatly improved; while the relatively early LTE version (such as Rel-8/9), the PDSCH of the LTE-A system has not benefited from the new technology. And get promoted.
  • new technologies enable PDSCH to provide data transmission for more users at the same time, which will greatly improve The demand for PDCCH channel capacity; on the other hand, new technologies such as DM-RS applied in PDSCH and R (Relay)-PDCCH applied in Relay backhaul (relay backhaul) provide PDCCH enhancement Technology and experience.
  • a current solution is to: transmit the enhanced PDCCH in the PDSCH domain in the downlink subframe while retaining the original PDCCH domain.
  • the original PDCCH domain still uses the existing transmission and reception technologies, and uses the original PDCCH resources, such as the transmission diversity when transmitting, and the CRS (Cell Reference Signal) based on the CRS (Cell Reference Signal).
  • this part of the PDCCH domain is called a legacy PDCCH domain.
  • the enhanced PDCCH domain can use more advanced transmission and reception technologies, such as precoding at the time of transmission, detection based on DM-RS at the time of reception, and time-frequency resource transmission outside the legacy PDCCH domain, and using some resources of the original PDSCH. And multiplexing with the PDSCH by frequency division, this part of the PDCCH domain is called an Enhanced (PDCCH) PDCCH domain.
  • Figure 2 shows the enhanced PDCCH resource occupation mode.
  • the scheme in which the Enhanced PDCCH and the PDSCH are multiplexed by frequency division is called FDM E-PDCCH.
  • each downlink control information DCI in the Enhanced PDCCH region occupies at least one physical resource block PRB (Physical Resource Block) pair.
  • PRB Physical Resource Block
  • each DCI contains fewer original bits (DCI format 1C is generally a dozen bits, and a larger DCI format such as 2/2C generally does not exceed 60 bits).
  • each PRB pair can be divided into thousands of sub-blocks according to the frequency domain, which is called a sub-RB pair (sub-resource pair).
  • Each DCI can be transmitted by one or more sub-RB pairs, so that one PRB pair can be used at most. Transfer multiple DCIs.
  • the resource allocation of the E-PDCCH region is in units of subRB pairs, and the precoding granularity of the data is in units of subRB pairs or thousands of subRB pairs, as shown in FIG. 3 .
  • the present invention provides a method and an apparatus for transmitting downlink control information, and provides a resource allocation method and a blind detection scheme based on a subRB pair to support an E-PDCCH transmission scheme based on a subRB pair.
  • the present invention provides a downlink control information sending method, including:
  • the present invention also provides a downlink control information receiving method, including:
  • each resource part is composed of N SRBP sub-resource blocks to subRB pairs, and N c and N SRBP are a positive integer; determining, according to the location information of the resource cluster, a resource that is available for transmitting downlink control information;
  • the sub-RB pair is used as a minimum unit, and the downlink control information is obtained by blind detection in the available resources based on the optional aggregation level.
  • the present invention also provides a downlink control information transmitting apparatus, including:
  • An available resource notification unit configured to allocate an available resource cluster to the enhanced physical downlink control channel E-PDCCH of the receiving end, and notify the receiving end of the location information of the resource cluster, where the resource cluster includes a resource part, and each resource part
  • the sub-RB pair is composed of N SRB p sub-resource blocks, and N c and N SRBP are positive integers;
  • the allocation transmission unit allocates resources for the downlink control information in the resource cluster according to the determined aggregation level, and transmits downlink control information to the receiving end on the allocated resources, where the minimum unit of the allocated resources is the subRB pair is the minimum unit.
  • the aggregation level refers to the number of subRB pairs included in the allocated resources.
  • the present invention also provides a downlink control information receiving apparatus, including:
  • a resource notification receiving unit configured to receive location information of a resource cluster allocated for the E-PDCCH transmitted by the transmitting end, where the resource cluster includes a resource part, and each resource part is composed of N SRBP sub-resource blocks and subRB pairs, N c , N SRBP are positive integers;
  • An available resource determining unit configured to determine, according to location information of the resource cluster, a resource that is available for transmitting downlink control information;
  • the downlink information acquiring unit is configured to obtain the downlink control information in a blind detection manner in the available resources based on the optional aggregation level.
  • the downlink control information transmission method and device provided by the present invention have the following beneficial effects: providing a sub-RB pair-based downlink control information transmission and reception method, thereby supporting a sub-RB pair-based E-PDCCH transmission scheme, and effectively improving the PDCCH channel capacity, The capacity and transmission efficiency of the PDSCH of the LTE-A system will be greatly improved.
  • FIG. 1 is a schematic diagram of a multiplexing relationship between a control area and a data area in a downlink subframe of an LTE/LTE-A system
  • FIG. 2 is a schematic diagram of an enhanced PDCCH structure
  • 3 is a schematic diagram of a subRB pair obtained by dividing a PRB pair into thousands of sub-blocks
  • FIG. 5 is a schematic diagram of an E-PDCCH resource cluster according to an example in the embodiment of the present invention.
  • FIG. 6 is a flowchart of a method for receiving downlink control information according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of a method for transmitting downlink control information according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of a method for receiving downlink control information according to an embodiment of the present invention. detailed description
  • the original PDCCH refers to a PDCCH having a TDM relationship with the PDSCH
  • the E-PDCCH is a PDCCH having a frequency division multiplexing relationship with the PDSCH.
  • a method for transmitting downlink control information is to divide each PRB pair into thousands of sub-blocks according to a frequency domain, which is called a sub-resource block pair subRB pair, and the downlink control information DCI may be One or more subRB pair transmissions.
  • the embodiment of the present invention provides a method for transmitting and receiving downlink control information, so as to provide a resource allocation method and a blind detection scheme based on a subRB pair to support a sub-RB pair-based E-PDCCH transmission scheme.
  • the method for transmitting downlink control information specifically includes:
  • Step 401 Allocate a resource cluster for the E-PDCCH of the receiving end, and notify the receiving end of the location information of the resource cluster, where the resource cluster includes N c resource parts, and each resource part is composed of N SRBP subRB pairs, N c , N SRBP Are positive integers;
  • Each of the PRBs is divided into thousands of sub-blocks in the frequency domain to obtain a sub-RB pair.
  • the number of sub-RB pairs included in each resource part of the cluster part is the same, and when multiple sub-RB pairs are included, preferably, many The subRB pairs are consecutive, and the frequency domain interval between two adjacent cluster parts may be the same or different.
  • N e and N SRBP may be determined as needed.
  • the location information of the resource cluster may be notified to the receiving end by high layer signaling.
  • Step 402 Allocate resources for the downlink control information in the resource cluster according to the determined aggregation level, and transmit downlink control information to the receiving end on the allocated resources.
  • the minimum unit of the allocated resources is a subRB pair, and the aggregation level refers to the The number of subRB pairs included in the allocated resource.
  • the embodiment of the present invention provides a method for transmitting downlink control information based on a subRB pair, so as to support E-PDCCH data transmission based on the subRB pair, effectively improving the PDCCH channel capacity, and making the capacity and transmission efficiency of the PDSCH of the LTE-A system large. Increase in range.
  • the location information of the allocated resource cluster is notified to the receiving end in a plurality of manners, as long as the location of each resource part in the resource cluster allocated by the notification receiving end can be realized.
  • the value of Nc and the starting position of each resource part in the resource cluster are notified to the receiving end, such as the number of the starting subRB pair of each resource part in the resource cluster in the resource cluster. Or the physical resource block PRB number where the starting subRB pair is located in each resource part of the resource cluster and the number of the starting subRB pair in the PRB are notified to the receiving end.
  • the value of N e , the frequency domain interval of two adjacent resource parts, and the start position of a predetermined resource part in the resource cluster are notified and received. end.
  • the number of the starting subRB pair of the predetermined resource part in the resource cluster, or the PRB number of the starting subRB pair of the predetermined resource part and the number of the starting subRB pair in the PRB are notified to the receiving end.
  • N c takes a predetermined value
  • the two predetermined values are usually different, and the starting position of a predetermined resource part in the resource cluster is notified to the receiving end.
  • the number of the starting subRB pair of the predetermined resource part in the resource cluster, or the PRB number of the starting subRB pair of the predetermined resource part and the number of the starting subRB pair in the PRB are notified to the receiving end.
  • N c takes a predetermined value, and when the frequency domain interval of each adjacent two resource parts is not the same, the starting position of each resource part in the resource cluster is notified to the receiving end, such as each resource part in the resource cluster.
  • the number of the starting subRB pair in the resource cluster, or the physical resource block PRB number in which the starting subRB pair is located in each resource part of the resource cluster, and the number of the starting subRB pair in the PRB are notified to the receiving end.
  • N c takes a predetermined value, and when the frequency domain interval of each adjacent two resource parts is the same, the frequency domain interval of two adjacent resource parts and the start position of a predetermined resource part in the resource cluster are notified to the receiving end.
  • the number of the starting subRB pair of the predetermined resource part in the resource cluster, or the PRB number of the starting subRB pair of the predetermined resource part and the number of the starting subRB pair in the PRB are notified to the receiving end.
  • a predetermined resource part in the resource cluster is specifically a first resource part sorted from a low frequency to a high frequency in a frequency domain in the resource cluster, or a first resource part sorted from a high frequency to a low frequency in a frequency domain. .
  • it can also be a reserved part of another resource, such as the middle part of the resource.
  • the predetermined value taken by the above N C may be a fixed value set, or a value calculated according to a predetermined rule, etc., so that it can be agreed with the user terminal in advance without further notification.
  • the value of the N SRBP is a fixed value or a dynamic value configured by signaling.
  • the value of the N SRBP may be determined according to an optional value of the aggregation level, such as any value of the aggregation level of the PDCCH or a multiple thereof, or a value of the aggregation level fixed to the PDCCH or a multiple thereof.
  • the aggregation level of the legacy PDCCH includes 1, 2, 4, and 8.
  • the value of the N SRBP may be 1, 2, 4, 8, or 16, etc., and may be fixed to 1, 2, One of 4, 8, and 16 takes a value, and the value of the N SRBP may be notified to the receiving end by higher layer signaling, or may not be notified.
  • the frequency domain interval between two adjacent resource parts in the resource cluster is an integer multiple of the subRB pair.
  • the downlink control information includes downlink scheduling information (DL grant) and/or uplink scheduling information (UL grant); and when the uplink scheduling information and the downlink scheduling information are included, the resources allocated for the downlink scheduling information are allocated for the uplink scheduling information. Resources do not overlap each other.
  • the resource allocated for the downlink scheduling information includes the first subRB pair of one of the resource parts; and/or, the resource allocated for the uplink scheduling information does not include the first subRB pair of any one of the resource parts.
  • one resource part is selected among the available resources, and 1 ⁇ N DL consecutive subRB pairs of the resource part are allocated to the downlink scheduling information, where N D L ⁇ N SRBP , where N DL The aggregation level of the downlink scheduling information determined.
  • one resource part is selected among the available resources, and L ⁇ L+N UL subRB pairs in the resource part are allocated to the uplink scheduling information, where N UL is the aggregation of the determined uplink scheduling information.
  • Level, N UL ⁇ N SRBP , L is an integer greater than 1, taking values from a predetermined range.
  • the aggregation level used by the upper grant and the DL grant may be respectively determined according to the original bit number of the UL grant and the DL grant and the subRB pair size.
  • the value of the N DL is a value of the original PDCCH aggregation level
  • the value of the N UL is a value of the original PDCCH aggregation level.
  • the range of the value of the subRB pair corresponding to each aggregation level may be further defined.
  • the range of the value of the subRB pair corresponding to each aggregation level is further defined.
  • each resource part cluster part is composed of 8 sub resource blocks and subRB pairs.
  • the resource that may be allocated is ⁇ 1 ⁇ , that is, the subRB pair with the number 1 of each cluster part in the resource cluster;
  • the resources that may be allocated are ⁇ 1, 2 ⁇ , that is, the subRB pair with the number 1 and 2 of each cluster part in the resource cluster;
  • the resources that may be allocated are ⁇ 1, 2, 3, 4 ⁇ , that is, the subRB pair with the number 1, 2, 3, 4 of each cluster part in the resource cluster;
  • the resources that may be allocated are ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ , that is, the number of each cluster part in the resource cluster is 1, 2, 3 SubRB pairs of 4, 5, 6, 7, and 8.
  • the subRB pair of each cluster part should be at least 8.
  • the resource that may be allocated is ⁇ 2 ⁇ , that is, the subRB pair with the cluster part number 2 in each resource cluster;
  • the resources that may be allocated are ⁇ 3, 4 ⁇ , that is, the subRB pair with the cluster part number 3 and 4 in each resource cluster.
  • the resources that may be allocated are ⁇ 5,6,7,8 ⁇ , that is, the subRB pair with the number 5, 6, 7, and 8 of each cluster part in the resource cluster.
  • the resources that may be allocated are ⁇ 9,10,11,12,13,14,15,16 ⁇ , ie the number of each cluster part in the resource cluster is 9, 10, 11 SubRB pair of 12, 13, 14, 15, and 16.
  • the subRB pair of each cluster part should be at least 16.
  • the resource that may be allocated is ⁇ 1 ⁇ ;
  • the resources that may be allocated are ⁇ 1, 2 ⁇ ;
  • the resources that may be allocated are ⁇ 1, 2, 3, 4 ⁇ ;
  • the resources that may be allocated are ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ .
  • the resource that may be allocated is ⁇ 2 ⁇ ;
  • the resources that may be allocated are ⁇ 3, 4 ⁇ or ⁇ 5, 6 ⁇ ;
  • the resources that may be allocated are ⁇ 3, 4, 5, 6 ⁇ or ⁇ 5, 6, 7, 8 ⁇ ;
  • the resources that may be allocated are ⁇ 5,6,7,8,9,10,11, 12 ⁇ or
  • the subRB pair of each cluster part should be at least 16.
  • the resource that may be allocated is ⁇ 1 ⁇ ;
  • the resources that may be allocated are ⁇ 1, 2 ⁇ ;
  • the resources that may be allocated are ⁇ 1, 2, 3, 4 ⁇ ;
  • the resources that may be allocated are ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ .
  • the resource may be allocated as ⁇ 2 ⁇ or ⁇ 3 ⁇
  • the possible resources are ⁇ 3, 4 ⁇ or ⁇ 5, 6 ⁇
  • the possible resources are ⁇ 3, 4, 5, 6 ⁇ or ⁇ 5, 6, 7, 8 ⁇
  • the possible resources are ⁇ 5,6,7,8,9,10,11, 12 ⁇ or ⁇ 9,10,11,12,13,14,15,16 ⁇ .
  • the subRB pair of each cluster part should be at least 16.
  • the resource that may be allocated is ⁇ 1 ⁇ ;
  • the resources that may be allocated are ⁇ 1, 2 ⁇ ;
  • the resources that may be allocated are ⁇ 1, 2, 3, 4 ⁇ ;
  • the resources that may be allocated are ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ .
  • the resources that may be allocated are ⁇ 2 ⁇ or ⁇ 3 ⁇ ; b) If the aggregation level is 2, the resources that may be allocated are ⁇ 3, 4 ⁇ or ⁇ 5, 6 ⁇ ;
  • the resources that may be allocated are ⁇ 5,6,7,8 ⁇ or ⁇ 9,10,11, 12 ⁇ ;
  • the possible resources are ⁇ 5,6,7,8,9,10,11, 12 ⁇ or ⁇ 9,10,11,12,13,14,15,16 ⁇ .
  • the subRB pair of each cluster part should be at least 16.
  • the search space when the search space is limited, the sub-RB pairs that may be allocated by the uplink scheduling information and the downlink scheduling information are not overlapped and adjacent.
  • the manner of defining the search space is not limited to the manner given in the above example. Of course, it may not be limited, that is, the user terminal performs blind detection on all available resources according to the aggregation level on the available resources.
  • the embodiment of the present invention further provides a method for receiving the downlink control information, as shown in FIG. 6, including:
  • Step 601 Receive location information of a resource cluster allocated by the transmitting end for the E-PDCCH, where the resource cluster includes N c resource parts, each resource part is composed of N SRBP subRB pairs, and N c and N SRBP are positive integers. ;
  • Step 602 Determine, according to location information of the resource cluster, a resource that is available for transmitting downlink control information.
  • the location information of the resource cluster can be determined, so that resources that the base station may use for downlink control information resource allocation can be determined.
  • Step 603 The sub-RB pair is used as a minimum unit, and the downlink control information is obtained by blind detection in the available resources based on the optional aggregation level.
  • the embodiment of the present invention provides a downlink control information receiving method based on a subRB pair, thereby supporting E-PDCCH data reception based on the subRB pair, effectively improving the PDCCH channel capacity, and greatly improving the capacity and transmission efficiency of the PDSCH of the LTE-A system. Improvement.
  • downlink control information is obtained in a blinded manner within the available resources until a DCI is detected or all possible detections are completed.
  • the downlink control information includes downlink scheduling information and/or uplink scheduling information, where: the resources available for the downlink scheduling information are N DL subRB pairs including the first subRB pair of the resource part, where DL' is All possible values of the aggregation level of the downlink scheduling information, N DU ⁇ NSRBP; The resources available for the uplink scheduling information are Nm subRB pairs of the first subRB pair that do not include the resource part, where Nuu is the aggregation of the uplink scheduling information. All possible values for the level, Nuu ⁇ N S RBPo
  • the resources available for the downlink scheduling information are 1 ⁇ N DU consecutive subRB pairs for each resource part, and the user terminal performs detection on the 1 ⁇ N DU consecutive subRB pairs of each resource part until the downlink is detected. Control letter Interest DCI or complete all possible tests.
  • the available resources of the uplink scheduling information are L L+Nuu consecutive subRB pairs of each resource part, and L is an integer greater than 1, and takes a value from a predetermined range. Then, the user terminal performs detection on the L L+Nu consecutive subRB pairs of each resource part until the DCI is detected or all possible detections are completed.
  • DL' may take values 1, 2, 4, and 8
  • N UL ' may take values 1, 2, 4, and 8.
  • the user terminal performs a blind check in the defined search space, such as the blind check number ⁇ 1 ⁇ , ⁇ 1, 2 ⁇ , ⁇ 1, 2, 3, 4 within each cluster part range.
  • ⁇ and the subRB pair of ⁇ 1,2,3,4,5,6,7,8 ⁇ assuming that a total of 2 resource parts are allocated, and the size of each resource part is not less than 8 subRB pairs, then the downlink blindness is completed.
  • Example 1 In the following, in conjunction with the examples 1 to 4 of the search space given above, examples 1 to 4 of blind detection of the user terminal are given correspondingly.
  • Example 1 In the following, in conjunction with the examples 1 to 4 of the search space given above, examples 1 to 4 of blind detection of the user terminal are given correspondingly.
  • Example 1 Example 1 :
  • the embodiment of the present invention further provides a downlink control information sending apparatus and a downlink control information receiving apparatus.
  • the principle of solving the problem by these apparatuses, a downlink control sending method, and a downlink control information receiving The method is similar, so the implementation of these devices can be referred to the implementation of the method, and the repeated description will not be repeated.
  • the downlink control information sending apparatus includes:
  • the available resource notification unit 701 is configured to allocate a resource cluster to the enhanced physical downlink control channel E-PDCCH of the receiving end, and notify the receiving end of the location information of the resource cluster, where the resource cluster includes N e resource parts, and each resource part is N SRBP
  • the sub-resource blocks are composed of subRB pairs, and N c and N SRBP are positive integers;
  • the allocation transmission unit 702 allocates resources for downlink control information in the resource cluster according to the determined aggregation level, and transmits downlink control information to the receiving end on the allocated resources, and the minimum unit of the allocated resources is a subRB pair, and the aggregation level is Refers to the number of subRB pairs included in the allocated resource.
  • the downlink control information transmitting device is an evolved base station in the LTE-A system.
  • the downlink control information receiving apparatus includes:
  • the resource notification receiving unit 801 is configured to receive location information of a resource cluster allocated for the E-PDCCH transmitted by the transmitting end, where the resource cluster includes N e resource parts, and each resource part is composed of N SRBP sub-resource blocks and subRB pairs, N c ,
  • N SRBP is a positive integer
  • the available resource determining unit 802 is configured to determine, according to the location information of the resource cluster, the resources available for transmitting the downlink control information;
  • the downlink information obtaining unit 803 is configured to obtain downlink control information by using a sub-RB pair as a minimum unit and performing blind detection in the available resources based on the optional aggregation level.
  • the downlink control information receiving device is a user terminal in the LTE-A system.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

La présente invention se rapporte à un procédé et à un dispositif adaptés pour transmettre des données de contrôle sur la liaison descendante. Le procédé selon l'invention consiste : à allouer un groupe de ressources à un E-PDCCH sur un côté de réception et à transmettre au côté de réception des données de position relatives au groupe de ressources, le groupe de ressources comprenant Nc portions de ressources, et chaque portion de ressources étant constituée de paires subRB de paires de sous-blocs de ressources NSRBP ; sur la base d'un niveau d'agrégation déterminé, à allouer une ressource à des données de contrôle sur la liaison descendante dans le groupe de ressources, et à transmettre les données de contrôle sur la liaison descendante au côté de réception sur la ressource allouée, l'unité minimale de la ressource allouée étant une paire subRB. Enfin, le côté de réception, en considérant la paire subRB en tant qu'une unité minimale, et sur la base d'un niveau d'agrégation optionnel, acquiert les données de contrôle sur la liaison descendante à l'intérieur d'une ressource utilisable selon une technique de détection à l'aveugle. La présente invention se rapporte d'autre part à un procédé d'allocation de ressources et à une solution de détection à l'aveugle sur la base d'une paire subRB. Ceci a pour but de mettre en œuvre une solution de transmission de E-PDCCH sur la base d'une paire subRB.
PCT/CN2012/079837 2011-08-12 2012-08-08 Procédé et dispositif pour transmettre des données de contrôle sur la liaison descendante Ceased WO2013023541A1 (fr)

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CN2011102311459A CN102355732A (zh) 2011-08-12 2011-08-12 一种下行控制信息传输方法及装置

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