WO2015139331A1 - Procédé de transmission d'informations de commande de liaison descendante et dispositif correspondant - Google Patents

Procédé de transmission d'informations de commande de liaison descendante et dispositif correspondant Download PDF

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Publication number
WO2015139331A1
WO2015139331A1 PCT/CN2014/073913 CN2014073913W WO2015139331A1 WO 2015139331 A1 WO2015139331 A1 WO 2015139331A1 CN 2014073913 W CN2014073913 W CN 2014073913W WO 2015139331 A1 WO2015139331 A1 WO 2015139331A1
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WO
WIPO (PCT)
Prior art keywords
resource
downlink control
control information
subframe
preset
Prior art date
Application number
PCT/CN2014/073913
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English (en)
Chinese (zh)
Inventor
张向东
余政
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/073913 priority Critical patent/WO2015139331A1/fr
Priority to CN201480000163.8A priority patent/CN105379344A/zh
Publication of WO2015139331A1 publication Critical patent/WO2015139331A1/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
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • 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
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

Definitions

  • the present invention relates to the field of communications, and in particular, to a downlink control information transmission method and related devices. Background technique
  • the information that the base station sends to the UE may be an (Enhanced) Physical Downlink Control Channel (ED) that carries Downlink Control Information (DCI).
  • ED Physical Downlink Control Channel
  • DCI Downlink Control Information
  • E The resource to which the PDCCH is mapped is composed of a number of control channel elements ((e)CCE, (enhanced) Control Channel Element).
  • the number of CCEs carrying one PDCCH is defined as the aggregation level.
  • the search space corresponding to one aggregation level L is composed of one or more PDCCH candidates, and each PDCCH candidate corresponds to L control channel elements.
  • the same PDCCH may adopt one of a plurality of aggregation levels and one of a plurality of PDCCH candidates corresponding to the aggregation level.
  • the CCE resources actually used may be different.
  • the search space is further divided into a common search space (CSS, Common Search Space) and a UE-specific search space (USS, UE-specific Search Space).
  • a CSS consists of one or more search spaces corresponding to the aggregation level.
  • the USS also consists of one or more search spaces corresponding to the aggregation level.
  • the PDCCH of the PDCCH candidate transmission in the CSS is used to schedule a Physical Downlink Shared Channel (PDSCH) message carrying a common message, such as a system message, or a random access response message, or a paging message, etc.;
  • the PDCCH of the PDCCH candidate transmission is used to schedule a PDSCH message carrying UE-specific data.
  • PDSCH Physical Downlink Shared Channel
  • a set of CCEs corresponding to all PDCCH candidates in the CSS is defined as a CSS resource
  • a set of CCEs corresponding to all PDCCH candidates in the USS is defined as a USS resource.
  • a CCE corresponding to one PDCCH candidate in the USS may belong to a CSS resource at the same time, that is, there is an overlap of resources.
  • a CCE corresponding to a specific PDCCH candidate in a USS in a specific subframe belongs to a CSS resource, and the CCE is not used to carry a PDCCH that uses any PDCCH candidate in the CSS
  • the specific PDCCH candidate corresponds to the CCE, and can be used to carry the PDCCH that uses the PDCCH candidate in the USS.
  • a legacy UE may be obtained by a blind PDCCH.
  • the specific CCE in the CSS resource carries the PDCCH that uses the PDCCH candidate in the CSS, that is, the PDCCH that schedules the common message, or the PDCCH that uses the PDCCH candidate in the USS, that is, the UE is scheduled.
  • the PDCCH with data, and complete reception of the PDCCH is completed.
  • the UE needs to perform combined reception on the information transmitted in multiple subframes. If the UE still passes the blind detection PDCCH candidate, it is determined whether the specific CCE in the CSS resource carries the PDCCH for scheduling the common message or the PDCCH for scheduling the UE-specific data, which greatly increases the complexity of the UE blindly detecting the PDCCH. The reason is that, for the UE, if the CCE corresponding to a certain PDCCH candidate in the USS also belongs to the CSS resource, the UE cannot determine whether the CSS resource carries the PDCCH for scheduling the common message, and the CCE cannot be determined.
  • a first aspect of the embodiments of the present invention provides a base station, including:
  • the first resource determining module of the base station is configured to determine the first resource, where the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • a second base station determining module configured to determine a second resource that transmits the second downlink control information, so that the second resource does not overlap with the first resource, where the second downlink control information is used to schedule a user Proprietary data of the device UE;
  • an information sending module configured to transmit the second downlink control information on the second resource.
  • the base station second resource determining module includes:
  • a base station first parameter determining unit configured to determine a first used to transmit the second downlink control information And determining, according to the first parameter, the second resource that transmits the second downlink control information, where the first parameter includes an aggregation level and/or a physical downlink control channel candidate index;
  • the base station first parameter adjustment unit is configured to adjust the first parameter when the second resource overlaps with the first resource, and determine the second resource according to the adjusted first parameter.
  • the second resource determining module of the base station is specifically configured to:
  • the second parameter includes at least one of an aggregation level, a physical downlink control channel candidate index, an index of a preset subframe, an index of two preset subframes, a preset total CCE number, and a preset constant.
  • the one preset subframe includes:
  • any one of the preset preset subframes includes:
  • the preset total CCE number is the smallest or largest of the multiple subframes.
  • the total number of CCEs in the subframe of the total CCE number is the preset total CCE number.
  • the second resource determining module of the base station is specifically configured to determine the second resource according to the following second parameter and a preset function relationship:
  • L is the aggregation level
  • m is the physical downlink control channel candidate index
  • k is the index of a preset subframe
  • ka is the index of another preset subframe
  • N CCE is the subframe with index k (ie, the number of total control channel elements CCE in the control region of subframe k)
  • N CCE is the number of total CCEs in the control region of the subframe indexed ka
  • N CCE is the preset total number of CCEs
  • Y k ( 39827xY_!
  • the base station second resource determining module includes:
  • a first subframe determining unit configured to determine a first subframe, where the first downlink control information for scheduling the common message is not transmitted in the first subframe;
  • a second base resource determining unit configured to determine the second resource, where the second resource belongs to a resource corresponding to one or more physical downlink control channel candidates in a common search space in the first subframe, and/or A resource corresponding to one or more physical downlink control channel candidates in a UE-specific search space.
  • the first resource determining module of the base station is specifically configured to:
  • the base station second resource determining module includes:
  • a base station second subframe determining unit configured to determine a second subframe, and determine a second resource in the second subframe that transmits the second downlink control information
  • a base station second resource setting unit configured to set the second resource to be empty when the first resource overlaps with the second resource in the second subframe.
  • a second aspect of the embodiments of the present invention provides a UE, including:
  • the UE first resource determining module is configured to determine a first resource, where the first resource includes at least: a resource used for transmitting a first downlink control information for scheduling a common message, and one or more physical downlink controls in a common search space.
  • the first resource includes at least: a resource used for transmitting a first downlink control information for scheduling a common message, and one or more physical downlink controls in a common search space.
  • a UE second resource determining module configured to determine a second resource that transmits the second downlink control information, so that the second resource does not overlap with the first resource, where the second downlink control information is used to schedule a user Proprietary data of the device UE;
  • the information receiving module is configured to receive the second downlink control information on the second resource.
  • the UE second resource determining module includes:
  • the UE first parameter determining unit is configured to determine a first parameter used for transmitting the second downlink control information, and determine, according to the first parameter, the second resource that transmits the second downlink control information, where the first parameter Include aggregation level and/or physical downlink control channel candidate index;
  • the UE first parameter adjustment unit is configured to adjust the first parameter when the second resource overlaps with the first resource, and determine the second resource according to the adjusted first parameter.
  • the UE second resource determining module is specifically configured to:
  • the second parameter includes at least one of an aggregation level, a physical downlink control channel candidate index, an index of a preset subframe, an index of two preset subframes, a preset total CCE number, and a preset constant.
  • the one preset subframe includes:
  • any one of the two preset subframes includes:
  • the preset total CCE number is the smallest or largest of the multiple subframes.
  • the total number of CCEs in the subframe of the total CCE number is the preset total CCE number.
  • the UE second resource determining module is specifically configured to: according to the following second parameter and preset function Relationship determines the second resource:
  • L is the aggregation level
  • m is the physical downlink control channel candidate index
  • k is the index of a preset subframe
  • ka is the index of another preset subframe
  • N CCE is the subframe with index k
  • the number of total control channel elements CCE in the control region (ie subframe k), N CCE , ka is indexed as ka
  • the number of total CCEs in the control area of the subframe, N CCE is the preset total number of CCEs;
  • Y k ( 39827xY_!
  • the UE second resource determining module includes:
  • a UE first subframe determining unit configured to determine a first subframe, where the first downlink control information for scheduling the common message is not transmitted in the first subframe;
  • a UE second resource determining unit configured to determine the second resource, where the second resource belongs to a resource corresponding to one or more physical downlink control channel candidates in a common search space in the first subframe, and/or A resource corresponding to one or more physical downlink control channel candidates in a UE-specific search space.
  • the UE first resource determining module is specifically configured to:
  • the first resource is a resource used for scheduling transmission of a first downlink control information for scheduling a common message
  • the resource used for transmitting the first downlink control information for scheduling a common message is a pre- Set or signaling configured.
  • the UE second resource determining module includes:
  • a UE second subframe determining unit configured to determine a second subframe, and determine a second resource in the second subframe that transmits the second downlink control information
  • the UE second resource setting unit is configured to set the second resource to be empty when the first resource overlaps with the second resource in the second subframe.
  • a third aspect of the present invention provides a downlink control information receiving method, including:
  • the base station determines the first resource, where the first resource includes at least: a resource used for scheduling the first downlink control information for scheduling the common message, and a resource corresponding to one or more physical downlink control channel candidate PDCCH candidates in the common search space, And one or more of the preset resources;
  • the base station Determining, by the base station, the second resource that transmits the second downlink control information, so that the second resource does not overlap with the first resource, where the second downlink control information is used to schedule the proprietary data of the user equipment base station ;
  • the base station receives the second downlink control information on the second resource.
  • the determining, by the base station, the second resource for transmitting the second downlink control information includes:
  • the base station adjusts the first parameter, and determines the second resource according to the adjusted first parameter.
  • the determining, by the base station, the second resource for transmitting the second downlink control information includes:
  • the base station determines, according to the second parameter, the second resource according to a preset function relationship, so that the second resource does not overlap with the first resource;
  • the second parameter includes at least one of an aggregation level, a physical downlink control channel candidate PDCCH candidate index, an index of a preset subframe, an index of two preset subframes, a preset total CCE number, and a preset constant. Or a variety.
  • the one preset subframe includes:
  • any one of the two preset subframes is preset.
  • the method includes: transmitting, by the rth subframe, the rth subframe of the second downlink control information, where r is a preset integer; or, transmitting the subframe with the smallest total CCE number of the multiple subframes of the second downlink control information Subframe index
  • the preset total CCE number is a minimum of the multiple subframes. Or the total number of CCEs in the subframe of the largest total CCE number.
  • the base station determines, according to the second parameter, the second function according to a preset function relationship.
  • Resources include:
  • the base station determines the second resource according to the following second parameter and a preset function relationship:
  • L is the aggregation level
  • m is the physical downlink control channel candidate index
  • k is the index of a preset subframe
  • ka is the index of another preset subframe
  • N CCE is the subframe with index k (ie, the number of total control channel elements CCE in the control region of subframe k)
  • N CCE is the number of total CCEs in the control region of the subframe indexed ka
  • N CCE is the preset total number of CCEs
  • Y k ( 39827xY_!
  • ⁇ - 1 ⁇ ⁇ station identifier value i is used to indicate the number of the i+1th CCE in the second resource, i is 0 to ( An integer in L-1); B is a preset constant, and B is used to make the determined second resource not overlap with the first resource.
  • the determining, by the base station, the second resource for transmitting the second downlink control information includes:
  • the determining, by the base station, the first resource includes:
  • the base station Determining, by the base station, the first resource, where the first resource belongs to a resource corresponding to one or more physical downlink control channel candidates in a common search space, and one or more physical downlink control channel candidates in the common search space
  • the resource is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space
  • the base station determines the first resource, where the first resource is a resource used for scheduling a first downlink control information for scheduling a common message, and the first downlink control information is used for scheduling a common message.
  • the resources used are pre-configured or signaled.
  • the determining, by the determining, the second resource for transmitting the second downlink control information includes:
  • the base station sets the second resource to be empty.
  • a fourth aspect of the present invention provides a downlink control information receiving method, including:
  • the first resource includes: a resource used for scheduling the first downlink control information for scheduling the common message, and a resource corresponding to one or more physical downlink control channel candidate PDCCH candidates in the common search space, And one or more of the preset resources;
  • the UE receives the second downlink control information on the second resource.
  • the determining, by the UE, the second resource for transmitting the second downlink control information includes:
  • the UE Determining, by the UE, a first parameter used for transmitting the second downlink control information, and according to the Determining, by a parameter, the second resource that transmits the second downlink control information, where the first parameter includes an aggregation level and/or a physical downlink control channel candidate index;
  • the UE adjusts the first parameter, and determines the second resource according to the adjusted first parameter.
  • the determining, by the UE, the second resource for transmitting the second downlink control information includes:
  • the UE determines, according to the second parameter, the second resource according to a preset function relationship, so that the second resource does not overlap with the first resource;
  • the second parameter includes at least one of an aggregation level, a physical downlink control channel candidate PDCCH candidate index, an index of a preset subframe, an index of two preset subframes, a preset total CCE number, and a preset constant. Or a variety.
  • the one preset subframe includes:
  • any one of the two preset subframes is preset.
  • the method includes: transmitting, by the rth subframe, the rth subframe of the second downlink control information, where r is a preset integer; or, transmitting the subframe with the smallest total CCE number of the multiple subframes of the second downlink control information Subframe index
  • the preset total CCE number is a minimum of the multiple subframes. Or the total number of CCEs in the subframe of the largest total CCE number.
  • the UE determines, according to the second parameter, the second function according to a preset function relationship. Resources include:
  • the UE determines the second resource according to the following second parameter and a preset function relationship:
  • L is the aggregation level
  • m is the physical downlink control channel candidate index
  • k is the index of a preset subframe
  • ka is the index of another preset subframe
  • N CCE is the subframe with index k (ie, the number of total control channel elements CCE in the control region of subframe k)
  • N CCE is the number of total CCEs in the control region of the subframe indexed ka
  • N CCE is the preset total number of CCEs
  • Y k ( 39827xY_!
  • ⁇ i off T is the value of the UE identifier
  • i is used to represent the i+1th of the second resources
  • the number of CCE, the value of i is an integer from 0 to (L-1);
  • B is a preset constant, and B is used to make the determined second resource not overlap with the first resource.
  • the determining, by the UE, the second resource for transmitting the second downlink control information includes:
  • the second resource Determining, by the UE, the second resource, where the second resource belongs to a resource corresponding to one or more physical downlink control channel candidates in a common search space in the first subframe, and/or one of UE-specific search spaces Or resources corresponding to multiple physical downlink control channel candidates.
  • the determining, by the UE, the first resource includes:
  • the UE Determining, by the UE, the first resource, where the first resource belongs to a resource corresponding to one or more physical downlink control channel candidates in a common search space, and one or more physical downlink control channel candidates in the common search space
  • the resource is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space
  • the UE determines the first resource, where the first resource is used to schedule a public message.
  • a resource used for downlink control information transmission, and a resource used for transmitting the first downlink control information for scheduling a common message is preset or signaling configured.
  • the determining, by the determining, the second resource for transmitting the second downlink control information includes:
  • the UE determines that the second resource is empty.
  • the base station determines the first resource and the second resource that transmits the second downlink control information, so that the second resource does not overlap with the first resource, and Transmitting the second downlink control information on the second resource.
  • the UE may determine that the eNB does not send the PDCCH for scheduling the common message on the second resource, and may determine that the second resource can be used to carry the dedicated data for scheduling the UE, because the second resource does not overlap with the first resource.
  • the PDCCH the UE may determine to receive and combine the UE control messages carried in the second resource, reduce the complexity of receiving the PDCCH by the UE, and improve the receiving efficiency of the PDCCH by the UE.
  • FIG. 1 is a structural diagram of an embodiment of a base station according to an embodiment of the present invention.
  • FIG. 2 is a structural diagram of another embodiment of a base station according to an embodiment of the present invention.
  • FIG. 3 is a structural diagram of another embodiment of a base station according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of another embodiment of a base station according to an embodiment of the present invention.
  • FIG. 5 is a structural diagram of an embodiment of a base station or a UE according to an embodiment of the present invention.
  • FIG. 6 is a structural diagram of an embodiment of a base station or a UE according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of an embodiment of a UE according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of another embodiment of a UE according to an embodiment of the present invention.
  • FIG. 9 is a structural diagram of another embodiment of a UE according to an embodiment of the present invention.
  • FIG. 10 is a structural diagram of another embodiment of a UE according to an embodiment of the present invention.
  • FIG. 11 is a flowchart of another embodiment of a method for transmitting downlink control information according to an embodiment of the present invention
  • FIG. 12 is a flowchart of another embodiment of a method for transmitting downlink control information according to an embodiment of the present invention
  • FIG. 13 is a flowchart of another embodiment of a downlink control information transmission method according to an embodiment of the present invention
  • FIG. 14 is a flowchart of another embodiment of a downlink control information transmission method according to an embodiment of the present invention
  • FIG. 16 is a flowchart of an embodiment of a method for receiving downlink control information according to an embodiment of the present invention
  • FIG. 17 is another embodiment of a method for receiving downlink control information according to an embodiment of the present invention
  • FIG. 11 is a flowchart of another embodiment of a method for transmitting downlink control information according to an embodiment of the present invention
  • FIG. 12 is a flowchart of another embodiment of a method for transmitting downlink control information according to an embodiment of the present invention
  • FIG. 18 is a flowchart of another embodiment of a method for receiving downlink control information according to an embodiment of the present invention
  • FIG. 19 is a flowchart of another embodiment of a method for receiving downlink control information according to an embodiment of the present invention
  • the embodiments of the present invention provide a base station, which can reduce the complexity of receiving a PDCCH by a UE, and improve the receiving efficiency of the PDCCH by the UE.
  • the embodiments of the present invention also provide related downlink control information transmission methods, which will be separately described below.
  • FIG. 1 For the basic structure of the base station provided by the embodiment of the present invention, refer to FIG. 1 , which mainly includes:
  • the first resource determining module 101 is configured to determine a first resource, where the first resource includes: at least one resource used for scheduling transmission of a first downlink control information for scheduling a common message, and one or more physical downlinks in a common search space. Control one or more of the resources corresponding to the channel candidate and the preset resources.
  • the second base resource determining module 102 is configured to determine a second resource that is used to transmit the second downlink control information, so that the second resource does not overlap with the first resource, where the second downlink control information is used for scheduling.
  • the proprietary data of the user equipment UE may include uplink and downlink resource allocation information, hybrid automatic repeat request information, power control information, and the like for the UE.
  • the information sending module 103 is configured to transmit the second downlink control information on the second resource.
  • the embodiment provides a base station, where the first resource determining module 101 determines the first resource, and the second resource determining module 102 determines the second resource that transmits the second downlink control information, so that the first resource and the second resource are used. There is no overlap, and the final information sending module 103 transmits the second downlink control information on the second resource. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the base station must not send on the second resource. A PDCCH that schedules a common message.
  • the base station when the base station sends the PDCCH on the resources overlapping the USS and the CSS, the base station may not be able to learn the base. Whether the station sends a PDCCH for scheduling a common message on the overlapping resource, and the UE cannot know whether there is a PDCCH scheduling its proprietary data on the subframe, and cannot determine whether to receive and merge the PDCCH on the subframe.
  • this embodiment eliminates the possibility that the base station transmits the UE-specific data on the overlapping resources of the USS and the CSS, and ensures that the range of the second resource that carries the UE-specific data does not overlap with the CSS resources.
  • the UE can determine that the second downlink control information is received and combined in the second resource, which reduces the complexity of receiving the PDCCH by the UE, and improves the receiving efficiency of the PDCCH by the UE.
  • FIG. 1 shows the basic structure of the base station provided by the present invention.
  • the following embodiment will further refine the base station second resource determining module therein.
  • the present invention provides another The basic structure of an embodiment includes:
  • the first resource determining module 201 is configured to determine the first resource, where the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlinks in the common search space.
  • the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlinks in the common search space.
  • the method for determining the first resource by the base station first resource determining module 201 includes: the base station first resource determining module 201 determines the first resource, where the first resource belongs to one or more physical downlink control channel candidates in the common search space.
  • a resource corresponding to one or more physical downlink control channel candidates in the common search space is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the base station first resource determining module 201 determines a first resource, where the first resource is a resource used for scheduling the first downlink control information for scheduling the common message, and the first downlink control information transmission for scheduling the common message is used.
  • the resources used are pre-configured or signaled.
  • the second base resource determining module 202 is configured to determine a second resource that is used to transmit the second downlink control information, so that the second resource does not overlap with the first resource, where the second downlink control information is used for scheduling.
  • the proprietary data of the user equipment UE may include uplink and downlink resource allocation information, hybrid automatic repeat request information, power control information, and the like for the UE.
  • the base station second resource determining module 202 includes:
  • the base station first parameter determining unit 205 is configured to determine a first parameter used for transmitting the second downlink control information, and determine, according to the first parameter, the second resource that transmits the second downlink control information.
  • the base station determines the resources used to transmit the downlink control information, generally by the following formula:
  • L L - ⁇ ( 3 ⁇ 4 + m) mod[p ccg>k )/Ll ⁇ + i ( 1 )
  • L is used to represent the aggregation level
  • Y k (39827 ' Y k ⁇ Jmod SSSS'? Determining, where Yi ⁇ nR ⁇ the n RNT1 is used to indicate the UE identity; m is used to denote the physical downlink control channel candidate index; N CCEik is used to represent the total number of CCEs in the control region of the subframe with the index k; i is used to indicate the number of the i+1th CCE in the second resource, and the value of i is an integer from 0 to (L-1).
  • the first parameter of the base station may be each parameter of the formula, and the base station first parameter determining unit 205 determines, by using the formula, the second resource that transmits the second downlink control information.
  • the base station first parameter determining unit 205 may also use other methods to determine the second resource for transmitting the second downlink control information, which is not limited in this embodiment.
  • the first parameter in this embodiment includes an aggregation level and/or a physical downlink channel candidate index.
  • the base station first parameter adjustment unit 2022 is configured to adjust the first parameter when the second resource overlaps with the first resource, and determine the second resource according to the adjusted first parameter.
  • the first parameter adjusting unit 2022 may adjust the aggregation level ij or adjust the physics when the second resource overlaps with the first resource, because the first parameter includes the aggregation level and/or the physical downlink channel candidate index.
  • the downlink channel candidate index may also adjust the aggregation level and the physical downlink channel candidate index at the same time, which is not limited herein.
  • the base station first parameter adjustment unit 2022 may adjust the first parameter and determine the second resource according to the first parameter, until the second resource does not overlap with the first resource; or adjust the first parameter according to the predefined rule. .
  • the predefined rule such as the first parameter adjustment unit 2022, performs the adjustment of the first parameter a specified number of times. If the base station first parameter adjustment unit 2022 cannot adjust the first parameter by the foregoing method, and the first resource and the second resource cannot overlap, the base station first parameter adjustment unit 2022 can replace the subframe and re-determine the second resource.
  • the information sending module 203 is configured to transmit the second downlink control information on the second resource.
  • the embodiment provides a base station, where the first resource determining module 201 determines the first resource, the first parameter determining unit 205 determines the second resource according to the first parameter, and the first parameter adjusting unit 2022 adjusts the first parameter.
  • the first resource does not overlap with the second resource, and the final information sending module 203 transmits the second downlink control information on the second resource. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the base station must not send on the second resource.
  • a PDCCH that schedules a common message.
  • the UE when the eNB sends the PDCCH on the overlapping resources of the USS and the CSS, the UE cannot know whether the base station sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot be known. Whether the PDCCH scheduling its proprietary data exists on the subframe, and the PDCCH cannot be determined to be received and combined on the subframe.
  • the base station is configured to send the UE on the overlapping resources of the USS and the CSS. It is possible to ensure that the range of the second resource carrying the UE-specific data does not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • FIG. 1 is provided by the embodiment of the present invention.
  • Another base station mainly includes:
  • the first resource determining module 101 is configured to determine a first resource, where the first resource includes: at least one resource used for scheduling transmission of a first downlink control information for scheduling a common message, and one or more physical downlinks in a common search space.
  • the first resource includes: at least one resource used for scheduling transmission of a first downlink control information for scheduling a common message, and one or more physical downlinks in a common search space.
  • the base station first resource determining module 101 determines the first resource, and the method includes: the base station first resource determining module 101 determines the first resource, where the first resource belongs to one or more physical downlink control channel candidates in the common search space.
  • a resource corresponding to one or more physical downlink control channel candidates in the common search space is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the base station first resource determining module 101 determines a first resource, where the first resource is a resource used for scheduling a first downlink control information for scheduling a common message, where the first downlink is used for scheduling a common message.
  • the resources used to control the transmission of information are pre-configured or signaled.
  • the second base resource determining module 102 is configured to determine a second resource that is used to transmit the second downlink control information, so that the second resource does not overlap with the first resource, where the second downlink control information is used for scheduling.
  • the proprietary data of the user equipment UE may include uplink and downlink resource allocation information, hybrid automatic repeat request information, power control information, and the like for the UE.
  • the second resource determining module of the base station is specifically configured to: determine, according to the second parameter, the second resource, so that the second resource does not overlap with the first resource; or, according to the second parameter Determining, according to a preset function relationship, the second resource, so that the second resource does not overlap with the first resource;
  • the second parameter includes at least one of an aggregation level, a physical downlink control channel candidate index, an index of a preset subframe, an index of two preset subframes, a preset total CCE number, and a preset constant.
  • the one preset subframe may include: a p-th subframe in a plurality of subframes in which the second downlink control information is transmitted, where p is a preset integer; or, a plurality of subframes in which the second downlink control information is transmitted a subframe having a minimum total CCE number; or, a qth subframe in a subframe having a smallest total number of CCEs among a plurality of subframes transmitting the second downlink control information, where q is a preset integer.
  • a preset subframe may also be other subframes, which is not limited in this embodiment.
  • the preset subframes of the two preset subframes may include: a rth subframe of the plurality of subframes that transmit the second downlink control information, where r is a preset integer; or a subframe index of a subframe having a smallest total number of CCEs among the plurality of subframes transmitting the second downlink control information; or a subframe in the subframe having the smallest total number of CCEs among the plurality of subframes transmitting the second downlink control information s subframes, where s is a preset integer. Any one of the two preset sub-frames may be other sub-frames, which is not limited in this embodiment.
  • the transmission may be at least one of a repetitive transmission, a spread spectrum transmission, a transmission time interval bundling transmission TTI bundling, and a power boost transmission.
  • the preset total CCE number may be the total number of CCEs in the subframe with the smallest or largest total CCE number among the multiple subframes.
  • the total number of CCEs in the preset may also be the total number of CCEs in other subframes, which is not limited in this embodiment.
  • the base station determines the second resource according to the second parameter, or the base station according to the second parameter, according to the preset function
  • the base station determines the second resource according to the following second parameter and the preset function relationship:
  • L is the aggregation level
  • m is the physical downlink control channel candidate index
  • k is the index of a preset subframe
  • ka is the index of another preset subframe
  • N CCE is the subframe with index k (ie, the number of total control channel elements CCE in the control region of subframe k)
  • N CCE is the number of total CCEs in the control region of the subframe indexed ka
  • N CCE is the preset total number of CCEs
  • Y k ( 39827xY_!
  • n R Ti and not 0, 3 ⁇ 4 1 is the value of the UE identifier; i is used to indicate the number of the i+1th CCE in the second resource, i The value is an integer from 0 to (L-1); B is a preset constant, and B is used to make the determined second resource not overlap with the first resource.
  • the base station second resource determining module may also determine the second resource by using other functions; the base station may also determine the second resource according to the second parameter by using other methods, which is not limited in this embodiment, as long as the second resource is not guaranteed. It can overlap with the first resource.
  • the information sending module 103 is configured to transmit the second downlink control information on the second resource.
  • the embodiment provides a base station, where the first resource determining module 101 determines the first resource, and the second resource determining module 102 determines the second resource according to the first parameter, so that the first resource does not exist with the second resource.
  • the final information sending module 103 transmits the second downlink control information on the second resource. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the base station must not send on the second resource.
  • a PDCCH that schedules a common message.
  • this embodiment eliminates the possibility that the base station transmits the UE-specific data on the overlapping resources of the USS and the CSS, and ensures that the range of the second resource carrying the UE-specific data is certain and the CSS resources are not.
  • the overlapping so that the UE can determine to receive and combine the second downlink control information in the second resource, reduce the complexity of receiving the PDCCH by the UE, and improve the receiving efficiency of the PDCCH by the UE.
  • FIG. 1 shows the basic structure of the base station provided by the present invention.
  • the following embodiment will further refine the base station second resource determining module therein.
  • the present invention provides another The basic structure of an embodiment includes:
  • the base station first resource determining module 301 is configured to determine a first resource, where the first resource includes at least: a resource used for transmitting a first downlink control information for scheduling a common message, and one or more physical downlinks in a common search space.
  • the first resource includes at least: a resource used for transmitting a first downlink control information for scheduling a common message, and one or more physical downlinks in a common search space.
  • the base station first resource determining module 301 determines the first resource, and the method includes: the base station first resource determining module 301 determines the first resource, where the first resource belongs to one or more physical downlink control channel candidates in the common search space.
  • a resource corresponding to one or more physical downlink control channel candidates in the common search space is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the base station first resource determining module 301 determines a first resource, where the first resource is a resource used for scheduling a first downlink control information for scheduling a common message, and the first downlink control information transmission for scheduling a common message is used.
  • the resources used are pre-configured or signaled.
  • the second base resource determining module 302 is configured to determine a second resource that is used to transmit the second downlink control information, so that the second resource does not overlap with the first resource, where the second downlink control information is used for scheduling.
  • the proprietary data of the user equipment UE may include uplink and downlink resource allocation information, hybrid automatic repeat request information, power control information, and the like for the UE.
  • the base station second resource determining module 302 includes:
  • the first subframe determining unit 305 is configured to determine a first subframe, where the first downlink control information for scheduling the common message is not transmitted in the first subframe;
  • the second base resource determining unit 3022 is configured to determine the second resource, where the second resource belongs to one or more physical downlink control channel candidates in a common search space in the first subframe. Resources, and/or resources corresponding to one or more physical downlink control channel candidates in the UE-specific search space.
  • the information sending module 303 is configured to transmit the second downlink control information on the second resource.
  • the embodiment provides a base station, where the base station first resource determining module 301 determines the first resource, and the base station first subframe determining unit 305 determines not to transmit the first sub-control of the first downlink control information of the common message.
  • the second base resource determining unit 3022 determines the second resource, and the final information sending module 303 transmits the second downlink control information on the second resource. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the base station must not send on the second resource.
  • a PDCCH that schedules a common message.
  • the UE may not know whether the base station sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot be known. Whether the PDCCH scheduling its proprietary data exists on the subframe, and the PDCCH cannot be determined to be received and combined on the subframe.
  • the base station is configured to send the UE on the overlapping resources of the USS and the CSS. It is possible to ensure that the range of the second resource carrying the UE-specific data does not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • FIG. 3 shows a structure of a base station provided by the present invention.
  • the following embodiment will provide another structure of the second resource determining module of the base station.
  • the present invention provides The basic structure of yet another embodiment includes:
  • the first resource determining module 401 is configured to determine a first resource, where the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling a common message, and one or more physical downlinks in the common search space.
  • the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling a common message, and one or more physical downlinks in the common search space.
  • the base station first resource determining module 401 determines the first resource, and the method includes: the base station first resource determining module 301 determines the first resource, where the first resource belongs to one or more physical downlink control channel candidates in the common search space. a resource corresponding to one or more physical downlink control channel candidates in the common search space is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space; Or the base station first resource determining module 401 determines a first resource, where the first resource is a resource used for scheduling a first downlink control information for scheduling a common message, and the first downlink control information transmission for scheduling a common message is used.
  • the resources used are pre-configured or signaled.
  • the second base resource determining module 402 is configured to determine a second resource that is used to transmit the second downlink control information, so that the second resource does not overlap with the first resource, where the second downlink control information is used for scheduling.
  • the proprietary data of the user equipment UE may include uplink and downlink resource allocation information, hybrid automatic repeat request information, power control information, and the like for the UE.
  • the base station second resource determining module 402 includes:
  • the second subframe determining unit 405 is configured to determine a second subframe, and determine a second resource that transmits the second downlink control information in the second subframe, and send a second downlink control message to the UE.
  • the second downlink control information is used to schedule the dedicated data of the user equipment UE, and may include uplink and downlink resource allocation information, hybrid automatic repeat request information, power control information, and the like for the UE.
  • the second downlink control information is carried by the second resource.
  • the second subframe determining unit 405 of the base station determines the second resource that transmits the second downlink control information in the second subframe.
  • the second base resource setting unit 4022 is configured to set the second resource to be empty when the first resource overlaps with the second resource in the second subframe.
  • the base station second resource setting unit 4022 sets the second resource in the second subframe to be empty.
  • the second resource cannot carry information when the second resource is empty.
  • the base station may not send the second downlink control information in the subframe, and may also select another subframe to re-determine the second resource, and may take other operations, which is not limited herein.
  • the information sending module 403 is configured to transmit the second downlink control information on the second resource.
  • the embodiment provides a base station, where the base station first resource determining module 401 determines the first resource, the base station second subframe determining unit 405 determines the second resource in the second subframe, and the base station second resource setting unit 4022 is When the first resource overlaps with the second resource in the second subframe, the second resource is set to be empty, and the final information sending module 403 transmits the second downlink control information on the second resource. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the base station must not send on the second resource.
  • a PDCCH that schedules a common message when the base station is in USS and CSS When the PDCCH is transmitted on the overlapping resources, the UE may not know whether the base station sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot know whether there is any dedicated data scheduled in the subframe.
  • the PDCCH is incapable of determining whether to receive and combine the PDCCHs on the subframe.
  • This embodiment eliminates the possibility that the base station transmits the UE-specific data on the overlapping resources of the USS and the CSS, and ensures that the UE is exclusively carried.
  • the range of the second resource of the data must not overlap with the CSS resource, so that the UE can determine to receive and combine the second downlink control information in the second resource, which reduces the complexity of receiving the PDCCH by the UE, and improves the PDCCH of the UE. Receiving efficiency.
  • the first resource determining module 201 of the base station determines that the first resource is a CCE of numbers 0 to 15.
  • the ID of the UE is 12, the aggregation level L is 8, and the number of control areas CCE is 32.
  • the first parameter determining unit 2021 of the base station determines, according to the protocol, that the second resource is one PDCCH in the subframe 0, if the physical downlink control channel candidate index m is 0.
  • the base station calculates that the second resource overlaps with the first resource.
  • the first parameter adjustment unit 2022 does not change the aggregation level L, and the physical downlink control channel candidate index m is 1, and calculates the CCE of the changed second resource to be the number 16 to 23, not the first resource. overlap.
  • the first parameter determining unit 2021 of the base station determines, according to the protocol, that the second resource is a PDCCH in the subframe 4, if the physical downlink control channel candidate index m is 0.
  • the base station calculates that the second resource overlaps with the first resource.
  • the first parameter adjustment unit 2022 does not change the aggregation level L, and the physical downlink control channel candidate index m is 1, and calculates the CCE of the changed second resource to be the number 8 to 15 again, still with the first resource. overlap.
  • the information sending module 203 transmits the resource allocation information to the mobile phone on the second resource.
  • the embodiment of the invention also proposes a base station, please still refer to FIG. 5:
  • the illustrated base station 500 is merely one example of a base station provided by any of the embodiments illustrated in Figures 1 and 4, and that the base station 500 can have more or less than that shown in the figures.
  • the components can be combined with two or more components or can have different component configurations.
  • the various components shown in the figures can be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
  • the base station includes a memory 501, a central processing unit (CPU) 502, a peripheral interface 503, an RF circuit 504, an audio circuit 505, a speaker 506, a power management chip 507, and an input/ An output (I/O) subsystem 508, other input/control devices 509, and an external port 510 are communicated via one or more communication buses or signal lines 511.
  • a memory 501 a central processing unit (CPU) 502, a peripheral interface 503, an RF circuit 504, an audio circuit 505, a speaker 506, a power management chip 507, and an input/ An output (I/O) subsystem 508, other input/control devices 509, and an external port 510 are communicated via one or more communication buses or signal lines 511.
  • non-base station provided in this embodiment is only an example of the base station provided by the embodiment of the present invention, and the base station according to the embodiment of the present invention may have more or less components than those shown in FIG. Two or more components may be combined, or may have different component configurations or arrangements, which may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
  • the base station provided in this embodiment is described in detail below.
  • the memory 501 is configured to store program code and data, and can be accessed by the CPU 502, the peripheral interface 503, etc., and the memory 501 can include a high-speed random access memory, and can also include a non-volatile memory, such as a Or multiple disk storage devices, flash devices, or other volatile solid-state storage devices.
  • the CPU 502 can acquire program code from the memory 501 and control the actual operation of the circuit such as the RF circuit 504, the I/O subsystem 508, etc. according to the acquired program.
  • Peripheral interface 503 which can connect the input and output peripherals of the device to CPU 502 and memory 501.
  • the I/O subsystem 508 can connect input and output peripherals on the device, such as display screen 512 and other input/control devices 509, to peripheral interface 503.
  • the I/O subsystem 508 can include a display controller 5081 and one or more input controllers 5082 for controlling other input/control devices 509.
  • one or more input controllers 5082 receive electrical signals from other input/control devices 509 or transmit electrical signals to other input/control devices 509, and other input/control devices 509 may include physical buttons (press buttons, rocker buttons, etc.) ), dial, slide switch, joystick, click wheel.
  • the input controller 5082 can be connected to any of the following: a keyboard, Infrared port, USB interface, and pointing device such as a mouse.
  • Display 512 The output interface between the display 512 station and the user displays the visual output to the user, and the visual output can include graphics, text, icons, video, and the like.
  • Display controller 5081 in I/O subsystem 508 receives electrical signals from display 512 or transmits electrical signals to display 512.
  • Display 512 detects contact on the touch screen, display controller 5081 converts the detected contact into interaction with a user interface object displayed on display screen 512, i.e., enables human-computer interaction, user interface objects displayed on display screen 512.
  • a user interface object displayed on display screen 512 i.e., enables human-computer interaction, user interface objects displayed on display screen 512. It can be an icon for running a game, an icon for networking to a corresponding network, and the like.
  • the device may also include a light mouse, which is a touch sensitive surface that does not display a visual output, or an extension of a touch sensitive surface formed by the touch screen.
  • the RF circuit 504 is mainly used to establish communication between the base station and the wireless network (ie, the network side), and implement data reception and transmission between the base station and the wireless network. For example, sending and receiving short messages, emails, etc. Specifically, the RF circuit 504 receives and transmits an RF signal, which is also referred to as an electromagnetic signal, and the RF circuit 504 converts the electrical signal into an electromagnetic signal or converts the electromagnetic signal into an electrical signal, and through the electromagnetic signal and communication network and other devices Communicate.
  • an RF signal which is also referred to as an electromagnetic signal
  • RF circuitry 504 may include known circuitry for performing these functions including, but not limited to, an antenna system, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC chip Group, Subscriber Identity Module (SIM), etc.
  • an antenna system an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC chip Group, Subscriber Identity Module (SIM), etc.
  • SIM Subscriber Identity Module
  • the audio circuit 505 is mainly used to receive audio data from the peripheral interface 503, convert the audio data into an electrical signal, and transmit the electrical signal to the speaker 506.
  • the speaker 506 is configured to restore the voice signal received by the base station from the wireless network through the RF circuit 504 to sound and play the sound to the user.
  • the power management chip 507 is used for power supply and power management of the hardware connected to the CPU502, the I/O subsystem, and the peripheral interface.
  • Figure 6 is a block diagram showing the internal part of the base station.
  • the CPU 601 is specifically configured to: determine a first resource;
  • the second resource overlaps with the first resource, adjusting the first parameter, and according to the adjusted a first parameter, determining the second resource;
  • the base station determines, according to the second parameter, the second resource according to a preset function relationship, so that the The second resource does not overlap with the first resource;
  • the second resource belongs to a resource corresponding to one or more physical downlink control channel candidates in a common search space in the first subframe, and/or one or more in a UE-specific search space a resource corresponding to a physical downlink control channel candidate;
  • the RF circuit 602 is specifically configured to:
  • the embodiment of the present invention further provides a UE, and the basic structure thereof is as shown in FIG. 7.
  • the method includes: a UE first resource determining module 701, configured to determine a first resource, where the first resource includes: One or more of the resources used for the first downlink control information transmission, the resources corresponding to one or more physical downlink control channel candidates in the common search space, and the preset resources.
  • the UE second resource determining module 702 is configured to determine a second resource that is used to transmit the second downlink control information, so that the second resource does not overlap with the first resource, where the second downlink control information is used for scheduling.
  • the proprietary data of the user equipment UE may include uplink and downlink resource allocation information, hybrid automatic repeat request information, power control information, and the like for the UE.
  • the information sending module 703 is configured to transmit the second downlink control information on the second resource.
  • the embodiment provides a UE, where the UE first resource determining module 101 determines the first resource, and the UE second resource determining module 102 determines to transmit the second resource of the second downlink control information, so that the first resource and the second resource are used. There is no overlap, and the final information receiving module 103 receives the second resource.
  • Two downlink control information Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the UE is not on the second resource.
  • a PDCCH that schedules a common message is sent.
  • the UE when the UE sends the PDCCH on the overlapping resources of the USS and the CSS, the UE may not be able to know whether the UE sends the PDCCH for scheduling the common message on the overlapping resource, and the UE cannot be known. Whether the PDCCH scheduling its proprietary data exists on the subframe, and whether the PDCCH on the subframe is received or combined is not determined.
  • the UE is configured to transmit the UE on the overlapping resources of the USS and the CSS. It is possible to ensure that the range of the second resource carrying the UE-specific data does not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • FIG. 7 shows the basic structure of the UE provided by the present invention.
  • the following embodiment will further refine the UE second resource determining module.
  • the present invention provides another The basic structure of an embodiment includes:
  • the UE first resource determining module 801 is configured to determine a first resource, where the first resource includes at least: a resource used for scheduling transmission of a first downlink control information for scheduling a common message, and one or more physical downlinks in a common search space.
  • the first resource includes at least: a resource used for scheduling transmission of a first downlink control information for scheduling a common message, and one or more physical downlinks in a common search space.
  • the UE first resource determining module 801 determines that the first resource has a plurality of methods, including: the UE first resource determining module 801 determines the first resource, where the first resource belongs to one or more physical downlink control channel candidates in the common search space. a resource corresponding to one or more physical downlink control channel candidates in the common search space is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the UE first resource determining module 801 determines a first resource, where the first resource is a resource used for scheduling a first downlink control information for scheduling a common message, and the first downlink control information is used for scheduling a common message.
  • the resources used are pre-configured or signaled.
  • the UE second resource determining module 802 is configured to determine a second resource that transmits the second downlink control information, so that the second resource does not overlap with the first resource, where the second downlink control information is used for scheduling
  • the proprietary data of the user equipment UE may include uplink and downlink resource allocation information for the UE, Hybrid automatic repeat request information, power control information, and the like.
  • the UE second resource determining module 802 includes:
  • the UE first parameter determining unit 805 is configured to determine a first parameter used for transmitting the second downlink control information, and determine, according to the first parameter, the second resource that transmits the second downlink control information.
  • the UE determines the resources used to transmit the downlink control information, generally by the following formula:
  • L is used to indicate the aggregation level
  • the first parameter of the UE may be each parameter of the formula, and the UE first parameter determining unit 805 determines, by using the formula, the second resource that transmits the second downlink control information.
  • the UE first parameter determining unit 805 may also use other methods to determine the second resource for transmitting the second downlink control information, which is not limited in this embodiment.
  • the first parameter in this embodiment includes an aggregation level and/or a physical downlink channel candidate index.
  • the UE first parameter adjustment unit 8022 is configured to adjust the first parameter when the second resource overlaps with the first resource, and determine the second resource according to the adjusted first parameter.
  • the first parameter adjustment unit 8022 can adjust the aggregation level ij, and can also adjust the physics, when the first parameter includes the aggregation level and/or the physical downlink channel candidate index.
  • the downlink channel candidate index may also adjust the aggregation level and the physical downlink channel candidate index at the same time, which is not limited herein.
  • the UE first parameter adjustment unit 8022 may adjust the first parameter and determine the second resource according to the first parameter, until the second resource does not overlap with the first resource; or may follow a predefined rule. Adjust the first parameter.
  • the predefined rule such as the first parameter adjustment unit 8022, performs the adjustment of the first parameter a specified number of times. If the UE first parameter adjustment unit 8022 cannot adjust the first parameter by the foregoing method, and the first resource does not overlap with the second resource, the UE first parameter adjustment unit 8022 can replace the subframe and re-determine the second resource. This embodiment is not limited.
  • the information receiving module 803 is configured to receive the second downlink control information on the second resource.
  • the present embodiment provides a UE, where the UE first resource determining module 801 determines the first resource, the UE first parameter determining unit 805 determines the second resource according to the first parameter, and the UE first parameter adjusting unit 8022 adjusts the first parameter.
  • the first resource does not overlap with the second resource, and the final information receiving module 803 receives the second downlink control information on the second resource. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the UE is not on the second resource.
  • a PDCCH that schedules a common message is sent.
  • the UE when the UE sends the PDCCH on the resource that overlaps the USS and the CSS, the UE may not be able to know whether the UE sends the PDCCH for scheduling the common message on the overlapping resource, and the UE cannot be known. Whether the PDCCH scheduling its own data exists on the subframe, and the PDCCH cannot be determined to be received and combined on the subframe.
  • This embodiment eliminates the UE from transmitting the UE on the overlapping resources of the USS and the CSS. It is possible to ensure that the range of the second resource carrying the UE-specific data does not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • FIG. 8 specifically explains the basic structure of the UE provided by the embodiment of the present invention.
  • the following embodiments further refine the function of the UE second resource determining module.
  • the present invention is implemented.
  • Another UE provided by the example mainly includes:
  • the UE first resource determining module 701 is configured to determine a first resource, where the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling a common message, and one or more physical downlinks in the common search space.
  • the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling a common message, and one or more physical downlinks in the common search space.
  • the UE first resource determining module 701 determines that the first resource has a plurality of methods, including: the UE first resource determining module 701 determines the first resource, where the first resource belongs to one or more physical downlink control channel candidates in the common search space. Corresponding resources, one or more physical under the common search space The resource corresponding to the row control channel candidate is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the UE first resource determining module 701 determines a first resource, where the first resource is a resource used for scheduling a first downlink control information for scheduling a common message, and the first downlink control information is used for scheduling a common message.
  • the resources used are pre-configured or signaled.
  • the UE second resource determining module 702 is configured to determine a second resource that is used to transmit the second downlink control information, so that the second resource does not overlap with the first resource, where the second downlink control information is used for scheduling.
  • the proprietary data of the user equipment UE may include uplink and downlink resource allocation information, hybrid automatic repeat request information, power control information, and the like for the UE.
  • the UE second resource determining module is specifically configured to: determine, according to the second parameter, the second resource, so that the second resource does not overlap with the first resource; or, according to the second parameter Determining, according to a preset function relationship, the second resource, so that the second resource does not overlap with the first resource;
  • the second parameter includes at least one of an aggregation level, a physical downlink control channel candidate index, an index of a preset subframe, an index of two preset subframes, a preset total CCE number, and a preset constant.
  • the one preset subframe may include: a p-th subframe in a plurality of subframes in which the second downlink control information is transmitted, where p is a preset integer; or, a plurality of subframes in which the second downlink control information is transmitted a subframe having a minimum total CCE number; or, a qth subframe in a subframe having a smallest total number of CCEs among a plurality of subframes transmitting the second downlink control information, where q is a preset integer.
  • a preset subframe may also be other subframes, which is not limited in this embodiment.
  • the preset subframes of the two preset subframes may include: a rth subframe of the plurality of subframes that transmit the second downlink control information, where r is a preset integer; or a subframe index of a subframe having a smallest total number of CCEs among the plurality of subframes transmitting the second downlink control information; or a subframe in the subframe having the smallest total number of CCEs among the plurality of subframes transmitting the second downlink control information s subframes, where s is a preset integer. Any one of the two preset sub-frames may be other sub-frames, which is not limited in this embodiment.
  • the transmission may be at least one of repeated transmission, spread spectrum transmission, transmission time interval bundling transmission TTI bundling, and power boost transmission.
  • the preset total CCE number may be the total number of CCEs in the subframe with the smallest or largest total CCE number among the multiple subframes.
  • the total number of CCEs in the preset may also be the total number of CCEs in other subframes, which is not limited in this embodiment.
  • the UE determines the second resource according to the second parameter, or the UE determines the second resource according to the preset function relationship according to the second parameter. For example, the UE determines the second resource according to the following second parameter and the preset function relationship:
  • L is the aggregation level
  • m is the physical downlink control channel candidate index
  • k is the index of a preset subframe
  • ka is the index of another preset subframe
  • N CCE is the subframe with index k (ie, the number of total control channel elements CCE in the control region of subframe k)
  • N CCE is the number of total CCEs in the control region of the subframe indexed ka
  • N CCE is the preset total number of CCEs
  • Y_i !i ⁇ is not 0, m the value of the UE identifier; i is used to indicate the number of the i+ 1th CCE in the second resource, and the value of i is An integer from 0 to (L-1); B is a preset constant, and B is used to make the determined second resource not overlap with the first resource.
  • the UE second resource determining module may also determine the second resource by using other functions; the UE may also determine the second resource according to the second parameter by using other methods, which is not limited in this embodiment, as long as the second resource is not guaranteed. It can overlap with the first resource.
  • the information receiving module 703 is configured to receive second downlink control information on the second resource.
  • the embodiment provides a UE, where the UE first resource determining module 701 determines the first resource, and the UE second resource determining module 702 determines the second resource according to the first parameter, so that the first resource does not exist with the second resource.
  • the final information sending module 703 transmits the second downlink control information on the second resource. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the UE is not determined.
  • the UE when the UE sends the PDCCH on the resources that overlap the USS and the CSS, the UE may not be able to know whether the UE sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot be known. Whether the PDCCH scheduling its proprietary data exists on the subframe, and the PDCCH cannot be determined to be received and combined on the subframe.
  • the UE is configured to transmit the UE on the overlapping resources of the USS and the CSS. With the possibility of data, it is ensured that the range of the second resource carrying the UE-specific data must not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • FIG. 7 shows the basic structure of the UE provided by the present invention.
  • the following embodiment will further refine the UE second resource determining module.
  • the present invention provides another The basic structure of an embodiment includes:
  • the UE first resource determining module 901 is configured to determine a first resource, where the first resource includes at least: a resource used for scheduling transmission of a first downlink control information for scheduling a common message, and one or more physical downlinks in a common search space.
  • the first resource includes at least: a resource used for scheduling transmission of a first downlink control information for scheduling a common message, and one or more physical downlinks in a common search space.
  • the UE first resource determining module 901 determines that the first resource has a plurality of methods, including: the UE first resource determining module 901 determines the first resource, where the first resource belongs to one or more physical downlink control channel candidates in the common search space. a resource corresponding to one or more physical downlink control channel candidates in the common search space is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the UE first resource determining module 901 determines a first resource, where the first resource is a resource used for scheduling a first downlink control information for scheduling a common message, and the first downlink control information is used for scheduling a common message.
  • the resources used are pre-configured or signaled.
  • the UE second resource determining module 902 is configured to determine a second resource that is used to transmit the second downlink control information, so that the second resource does not overlap with the first resource, where the second downlink control information is used for scheduling.
  • the proprietary data of the user equipment UE may include uplink and downlink resource allocation information, hybrid automatic repeat request information, power control information, and the like for the UE.
  • the UE second resource determining module 902 includes: The UE first subframe determining unit 905 is configured to determine a first subframe, where the first downlink control information for scheduling the common message is not transmitted in the first subframe;
  • the UE second resource determining unit 9022 is configured to determine the second resource, where the second resource belongs to a resource corresponding to one or more physical downlink control channel candidates in a common search space in the first subframe, and Or a resource corresponding to one or more physical downlink control channel candidates in the UE-specific search space.
  • the information receiving module 903 is configured to receive the second downlink control information on the second resource.
  • the present embodiment provides a UE, where the UE first resource determining module 901 determines a first resource, and the UE first subframe determining unit 905 determines not to transmit the first sub-control of the first downlink control information of the common message.
  • the UE, the second resource determining unit 9022 determines the second resource, and the final information receiving module 903 receives the second downlink control information on the second resource. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the UE is not on the second resource.
  • a PDCCH that schedules a common message is sent.
  • the UE may not be able to know whether the UE sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot be known. Whether the PDCCH scheduling its own data exists on the subframe, and the PDCCH cannot be determined to be received and combined on the subframe.
  • This embodiment eliminates the UE from transmitting the UE on the overlapping resources of the USS and the CSS.
  • the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • the embodiment shown in the figure shows a structure of the UE provided by the present invention.
  • the following embodiment will give another structure of the UE second resource determining module.
  • the present invention provides The basic structure of an embodiment includes:
  • the UE first resource determining module 1001 is configured to determine a first resource, where the first resource includes at least: a resource used for transmitting a first downlink control information for scheduling a common message, and one or more physical downlinks in a common search space.
  • the first resource includes at least: a resource used for transmitting a first downlink control information for scheduling a common message, and one or more physical downlinks in a common search space.
  • the UE first resource determining module 1001 determines a method for determining the first resource, including: The UE first resource determining module 301 determines a first resource that belongs to a resource corresponding to one or more physical downlink control channel candidates in the common search space, where one or more physical downlink control channel candidates correspond to the common search space.
  • the resource is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the UE first resource determining module 1001 determines a first resource, where the first resource is a resource used for scheduling a first downlink control information for scheduling a common message, and the first downlink control information transmission for scheduling a common message is used.
  • the resources used are pre-configured or signaled.
  • the UE second resource determining module 1002 is configured to determine a second resource that is used to transmit the second downlink control information, so that the second resource does not overlap with the first resource, where the second downlink control information is used for scheduling.
  • the proprietary data of the user equipment UE may include uplink and downlink resource allocation information, hybrid automatic repeat request information, power control information, and the like for the UE.
  • the UE second resource determining module 1002 includes:
  • the UE second subframe determining unit 1005 is configured to determine a second subframe, and determine a second resource that is used to transmit the second downlink control information in the second subframe.
  • the second downlink control information is used to schedule the proprietary data of the user equipment UE, and may include
  • the second downlink control information is carried by the second resource.
  • the UE second subframe determining unit 1005 determines the second resource that transmits the second downlink control information in the second subframe.
  • the UE second resource determining unit 10022 is configured to determine that the second resource is empty when the first resource overlaps with the second resource in the second subframe.
  • the UE second resource determining unit 10022 determines that the second resource is empty. Wherein, when the second resource is empty, the second resource cannot bear information.
  • the UE may not receive the second downlink control information in the subframe, and may also select another subframe to re-determine the second resource, and may take other operations, which is not limited herein.
  • the information sending module 1003 is configured to transmit the second downlink control information on the second resource.
  • This embodiment provides a UE, where the UE first resource determining module 1001 determines the first resource, the UE second subframe determining unit 1005 determines the second resource in the second subframe, and the UE second resource setting unit 10022 is When the first resource overlaps with the second resource in the second subframe, the second resource is set to be empty, and the final information receiving module 1003 receives the second downlink control information on the second resource. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the UE is not on the second resource.
  • a PDCCH that schedules a common message is sent.
  • the UE may not be able to know whether the UE sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot be known. Whether the PDCCH scheduling its proprietary data exists on the subframe, and the PDCCH cannot be determined to be received and combined on the subframe.
  • the UE is configured to send the UE on the overlapping resources of the USS and the CSS.
  • the UE With the possibility of data, it is ensured that the range of the second resource carrying the UE-specific data must not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • An existing mobile phone communicates with a base station based on the LTE protocol, and at a certain time, the base station needs to send resource allocation information to the mobile phone.
  • the UE first resource determining module 801 of the UE determines that the first resource is a CCE of numbers 0 to 15.
  • the ID of the UE is 12, the aggregation level L is 8, and the number of control areas CCE is 32.
  • the UE first parameter determining unit 8021 determines, according to the protocol, that the second resource is one of the PDCCHs in the subframe 0, if the physical downlink control channel candidate index m is 0.
  • the mobile phone calculates that the second resource overlaps with the first resource.
  • the UE first parameter adjustment unit 8022 does not change the aggregation level L, and the physical downlink control channel candidate index m is 1.
  • the CCE of the changed second resource is calculated to be the number 16 to 23, not the first. Resources overlap.
  • the UE first parameter determining unit 8021 determines, according to the protocol, that the second resource is one of the PDCCHs in the subframe 4, if the physical downlink control channel candidate index m is 0.
  • the mobile phone calculates that the second resource overlaps with the first resource.
  • the UE first parameter adjustment unit 8022 does not change the aggregation level L, and the physical downlink control channel candidate index m is 1.
  • the CCE of the changed second resource is numbered 8 to 15, and is still the first. Resources overlap.
  • the information receiving module 803 receives the resource allocation information on the second resource.
  • the embodiment of the present invention further proposes a UE, please still refer to FIG. 5:
  • the illustrated UE 500 is only one example of a UE provided by any of the embodiments illustrated in Figures 7 and 10, and that the UE 500 may have more or fewer components than those shown in the figures. You can combine two or more components or you can have different component configurations.
  • the various components shown in the figures can be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
  • the UE includes a memory 501, a central processing unit (CPU) 502, a peripheral interface 503, an RF circuit 504, an audio circuit 505, a speaker 506, a power management chip 507, and an input/ An output (I/O) subsystem 508, other input/control devices 509, and an external port 510 are communicated via one or more communication buses or signal lines 511.
  • a UE involved in an embodiment of the present invention may have more or less components than those shown in FIG. 5, two or more components may be combined, or may have different component configurations or settings, and each component may be Hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
  • the UE provided in this embodiment is described in detail below.
  • the memory 501 is configured to store program code and data, and can be accessed by the CPU 502, the peripheral interface 503, etc., and the memory 501 can include a high-speed random access memory, and can also include a non-volatile memory, such as a Or multiple disk storage devices, flash devices, or other volatile solid-state storage devices.
  • the CPU 502 can acquire program code from the memory 501 and control the actual operation of the circuit such as the RF circuit 504, the I/O subsystem 508, etc. according to the acquired program.
  • Peripheral interface 503 which can connect the input and output peripherals of the device to CPU 502 and memory 501.
  • the I/O subsystem 508 can connect input and output peripherals on the device, such as display screen 512 and other input/control devices 509, to peripheral interface 503.
  • the I/O subsystem 508 can include a display controller 5081 and one or more input controllers 5082 for controlling other input/control devices 509.
  • one or more input controllers 5082 receive electrical signals from other input/control devices 509 or transmit electrical signals to other input/control devices 509, other input/control devices 509 It can include physical buttons (press buttons, rocker buttons, etc.), dials, slide switches, joysticks, and click wheels.
  • the input controller 5082 can be connected to any of the following: a keyboard, an infrared port, a USB interface, and a pointing device such as a mouse.
  • Display 512 is an output interface between the UE and the user, and displays the visual output to the user.
  • the visual output may include graphics, text, icons, video, and the like.
  • Display controller 5081 in I/O subsystem 508 receives electrical signals from display 512 or transmits electrical signals to display 512.
  • Display 512 detects contact on the touch screen, display controller 5081 converts the detected contact into interaction with a user interface object displayed on display screen 512, i.e., enables human-computer interaction, user interface objects displayed on display screen 512.
  • a user interface object displayed on display screen 512 i.e., enables human-computer interaction, user interface objects displayed on display screen 512. It can be an icon for running a game, an icon for networking to a corresponding network, and the like.
  • the device may also include a light mouse, which is a touch sensitive surface that does not display a visual output, or an extension of a touch sensitive surface formed by the touch screen.
  • the RF circuit 504 is mainly used to establish communication between the UE and the wireless network (ie, the network side), and implement data reception and transmission between the UE and the wireless network. For example, sending and receiving short messages, emails, etc. Specifically, the RF circuit 504 receives and transmits an RF signal, which is also referred to as an electromagnetic signal, and the RF circuit 504 converts the electrical signal into an electromagnetic signal or converts the electromagnetic signal into an electrical signal, and through the electromagnetic signal and communication network and other devices Communicate.
  • an RF signal which is also referred to as an electromagnetic signal
  • RF circuitry 504 may include known circuitry for performing these functions including, but not limited to, an antenna system, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC chip Group, Subscriber Identity Module (SIM), etc.
  • an antenna system an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC chip Group, Subscriber Identity Module (SIM), etc.
  • SIM Subscriber Identity Module
  • the audio circuit 505 is mainly used to receive audio data from the peripheral interface 503, convert the audio data into an electrical signal, and transmit the electrical signal to the speaker 506.
  • the speaker 506 is configured to restore the voice signal received by the UE from the wireless network through the RF circuit 504 to sound and play the sound to the user.
  • the power management chip 507 is used for power supply and power management of the hardware connected to the CPU502, the I/O subsystem, and the peripheral interface.
  • FIG. 6 is a structural diagram of an internal part of the UE.
  • the CPU 601 is specifically configured to:
  • the UE determines, according to the second parameter, the second resource according to a preset function relationship, so that the The second resource does not overlap with the first resource;
  • the second resource belongs to a resource corresponding to one or more physical downlink control channel candidates in a common search space in the first subframe, and/or one or more in a UE-specific search space a resource corresponding to a physical downlink control channel candidate;
  • the RF circuit 602 is specifically configured to:
  • the present invention also provides a specific method for implementing the downlink control information transmission by the foregoing base station, and the basic process thereof is shown in FIG. 11 , including:
  • the base station determines the first resource.
  • the base station determines a first resource, where the first resource is used to transmit a common message, where the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the base station determines a second resource that transmits the second downlink control information, and sends a second downlink control message to the UE.
  • the second downlink control information is used to schedule the proprietary data of the user equipment UE.
  • the second downlink control information may include uplink and downlink resource allocation information for the UE, Hybrid automatic repeat request information, power control information, and the like.
  • Control channels that schedule proprietary data or data channels that carry proprietary data are typically scrambled by the user's proprietary identity.
  • the user's private identity is: Cell-Radio network temporary identifier (C-RNTI), or semi-persistent scheduling RNTI (SPS-RNTI), or temporary Temporary-RNTI.
  • the second downlink control information is carried by the second resource.
  • the base station determines the second resource that transmits the second downlink control information.
  • the second resource does not overlap with the first resource.
  • the base station transmits second downlink control information on the second resource.
  • the second downlink control information is transmitted on the second resource.
  • the embodiment provides a downlink control information transmission method, where the base station determines the first resource and the second resource that transmits the second downlink control information, so that the first resource does not overlap with the second resource, and finally the second resource Transmitting the second downlink control information. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the base station must not send on the second resource.
  • a PDCCH that schedules a common message.
  • the UE may not know whether the base station sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot be known. Whether the PDCCH scheduling its proprietary data exists on the subframe, and the PDCCH cannot be determined to be received and combined on the subframe.
  • the base station is configured to send the UE on the overlapping resources of the USS and the CSS. It is possible to ensure that the range of the second resource carrying the UE-specific data does not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • the embodiment shown in FIG. 11 provides a basic flow of the downlink control information transmission method provided by the present invention, where the base station determines the first resource and the second resource that transmits the second downlink control information, so that the first resource and the second resource are There is no overlap, and finally the second downlink control information is transmitted on the second resource.
  • the following embodiment further clarifies how the base station determines the second resource for transmitting the second downlink control information.
  • the basic process of another embodiment provided by the present invention includes:
  • the base station determines the first resource.
  • the base station determines the first resource, where the first resource is used to transmit the public message, where the first resource includes at least: One or more of a resource used for scheduling transmission of a first downlink control information for a common message, a resource corresponding to one or more physical downlink control channel candidates in a common search space, and a predefined resource.
  • the method for the base station to determine the first resource includes: the base station determining the first resource, where the first resource belongs to one or more physical downlink control channel candidates in the common search space, and one or more of the common search spaces
  • the resources corresponding to the physical downlink control channel candidates are resources corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the base station determines a first resource, where the first resource is a resource used for scheduling the first downlink control information for scheduling the common message, and the resource used for the first downlink control information transmission for scheduling the common message is preset. Or signaling configuration.
  • the base station determines a first parameter used for transmitting the second downlink control information, and determines, according to the first parameter, a second resource that transmits the second downlink control information.
  • the base station determines the resources used to transmit the downlink control information, generally by the following formula:
  • the first parameter of the base station may be each parameter of the formula, and the second resource for transmitting the second downlink control information is determined by the formula.
  • the base station may also use other methods to determine the second resource for transmitting the second downlink control information, which is not limited in this embodiment.
  • the first parameter of the base station in this embodiment includes an aggregation level and/or a physical downlink channel candidate index.
  • the base station determines whether the second resource overlaps with the first resource, and if yes, adjusts the first parameter, and determines the second resource according to the adjusted first parameter. After determining the second resource, the base station determines whether the second resource overlaps with the first resource, and if yes, adjusts the first parameter, and determines the second resource according to the adjusted first parameter.
  • the base station may determine the aggregation level after the second resource overlaps with the first resource, and may also adjust the physical downlink channel candidate index. Adjust the aggregation level and the physical downlink channel candidate index, which is not limited here.
  • the base station may adjust the first parameter and determine the second resource according to the first parameter, until the second resource does not overlap with the first resource. If the base station cannot make the first resource and the second resource do not overlap by adjusting the first parameter, the base station may replace the subframe and re-determine the second resource. This embodiment is not limited.
  • the base station transmits second downlink control information on the second resource.
  • the second downlink control information is transmitted on the second resource.
  • the embodiment provides a downlink control information transmission method, where the base station determines the first resource, determines the second resource according to the first parameter, and adjusts the first parameter so that the first resource does not overlap with the second resource, and finally Transmitting the second downlink control information on the second resource. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the base station must not send on the second resource.
  • a PDCCH that schedules a common message.
  • the UE when the eNB sends the PDCCH on the overlapping resources of the USS and the CSS, the UE cannot know whether the base station sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot be known. Whether the PDCCH scheduling its proprietary data exists on the subframe, and the PDCCH cannot be determined to be received and combined on the subframe.
  • the base station is configured to send the UE on the overlapping resources of the USS and the CSS. It is possible to ensure that the range of the second resource carrying the UE-specific data does not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • the embodiment shown in FIG. 12 provides a basic flow of the downlink control information transmission method provided by the present invention, where the base station adjusts the first parameter so that the first resource does not overlap with the second resource, and finally the second resource Transmitting the second downlink control information.
  • the following embodiment will provide another method for determining the second resource, and the first resource and the second resource may not overlap.
  • the basic process of another embodiment provided by the present invention includes: 1301. The base station determines the first resource.
  • the base station determines a first resource, where the first resource is used to transmit a common message, where the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the method for the base station to determine the first resource includes: the base station determining the first resource, where the first resource belongs to one or more physical downlink control channel candidates in the common search space, and one or more of the common search spaces
  • the resources corresponding to the physical downlink control channel candidates are resources corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the base station determines a first resource, where the first resource is a resource used for scheduling the first downlink control information for scheduling the common message, and the resource used for the first downlink control information transmission for scheduling the common message is preset. Or signaling configuration.
  • the base station determines the second resource according to the second parameter, or the base station determines, according to the second parameter, the second resource according to the preset function relationship;
  • the base station determines the second resource according to the second parameter, or the base station determines, according to the second parameter, the second resource according to the preset function relationship, so that the second resource does not overlap with the first resource.
  • the second parameter includes at least one of an aggregation level, a physical downlink control channel candidate index, an index of a preset subframe, an index of two preset subframes, a preset total CCE number, and a preset constant.
  • the one preset subframe may include: a p-th subframe in a plurality of subframes in which the second downlink control information is transmitted, where p is a preset integer; or, a plurality of subframes in which the second downlink control information is transmitted a subframe having a minimum total CCE number; or, a qth subframe in a subframe having a smallest total number of CCEs among a plurality of subframes transmitting the second downlink control information, where q is a preset integer.
  • a preset subframe may also be other subframes, which is not limited in this embodiment.
  • the preset subframes of the two preset subframes may include: a rth subframe of the plurality of subframes that transmit the second downlink control information, where r is a preset integer; or a subframe index of a subframe having a smallest total number of CCEs among the plurality of subframes transmitting the second downlink control information; or a subframe in the subframe having the smallest total number of CCEs among the plurality of subframes transmitting the second downlink control information s subframes, where s is a preset integer. Any one of the two preset sub-frames may be other sub-frames, which is not limited in this embodiment.
  • the transmission may be at least one of repeated transmission, spread spectrum transmission, transmission time interval bundling transmission TTI bundling, and power boost transmission.
  • the preset total CCE number may be the total number of CCEs in the subframe with the smallest or largest total CCE number among the multiple subframes.
  • the total number of CCEs in the preset may also be the total number of CCEs in other subframes, which is not limited in this embodiment.
  • the base station determines the second resource according to the second parameter, or the base station determines the second resource according to the preset function relationship according to the second parameter. For example, the base station determines the second resource according to the following second parameter and the preset function relationship:
  • L is the aggregation level
  • m is the physical downlink control channel candidate index
  • k is the index of a preset subframe
  • ka is the index of another preset subframe
  • N CCE is the subframe with index k (ie, the number of total control channel elements CCE in the control region of subframe k)
  • N CCE is the number of total CCEs in the control region of the subframe indexed ka
  • N CCE is the preset total number of CCEs
  • the base station may also determine the second resource by using other functions; the base station may also determine the second resource according to the second parameter by using other methods, which is not limited in this embodiment, and only ensures that the second resource does not communicate with the first resource. Stack it.
  • the base station transmits second downlink control information on the second resource.
  • the second downlink control information is transmitted on the second resource.
  • the embodiment provides a downlink control information transmission method, where the base station determines the first resource, and determines the second resource according to the first parameter, so that the first resource does not overlap with the second resource, and finally Transmitting the second downlink control information on the second resource. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the base station must not send on the second resource.
  • a PDCCH that schedules a common message.
  • the UE may not know whether the base station sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot be known. Whether the PDCCH scheduling its proprietary data exists on the subframe, and the PDCCH cannot be determined to be received and combined on the subframe.
  • the base station is configured to send the UE on the overlapping resources of the USS and the CSS. It is possible to ensure that the range of the second resource carrying the UE-specific data does not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • the embodiment shown in FIG. 13 provides a basic flow of the downlink control information transmission method provided by the present invention, where the base station determines the first resource, and determines the second resource according to the first parameter, so that the first resource and the second resource are not There is an overlap, and finally the second downlink control information is transmitted on the second resource.
  • the following embodiment will further refine the second resource for transmitting the second downlink control information by the base station.
  • the basic process of another embodiment provided by the present invention includes:
  • the base station determines the first resource.
  • the base station determines a first resource, where the first resource is used to transmit a common message, where the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the method for the base station to determine the first resource includes: the base station determining the first resource, where the first resource belongs to one or more physical downlink control channel candidates in the common search space, and one or more of the common search spaces
  • the resources corresponding to the physical downlink control channel candidates are resources corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the base station determines a first resource, where the first resource is a resource used for scheduling the first downlink control information for scheduling the common message, and the resource used for the first downlink control information transmission for scheduling the common message is preset. Or signaling configuration.
  • the base station determines the first subframe.
  • the defined subframe can be used to transmit public messages, but there are also many cases where The defined subframe is not used to transmit public messages.
  • the defined subframe is not used to transmit public messages.
  • a subframe in which a public message is transmitted a subframe including a system message SI, a subframe of an RAR, and a subframe of a paging message, etc.
  • there is a certain time and different types of public messages often have fixed transmission moments. Therefore, public messages are not transmitted in subframes other than the time set of the transmission moments of all common messages.
  • the first subframe is not used for transmitting and scheduling the public message.
  • the first subframe may be a subframe that is outside the time set of the base station at the time of transmission of all common messages.
  • the base station determines the second resource.
  • the second resource is determined.
  • the second resource belongs to a resource corresponding to one or more physical downlink control channel candidates in the common search space in the first subframe, and/or a resource corresponding to one or more physical downlink control channel candidates in the UE-specific search space.
  • the second resource does not transmit the downlink control information for scheduling the public message because the first subframe does not transmit the common message.
  • the base station transmits second downlink control information on the second resource.
  • the second downlink control information is transmitted on the second resource.
  • the embodiment provides a downlink control information transmission method, where the base station determines the first resource, and then determines the first subframe, where the first subframe is not used to transmit the common message. The base station then determines the second resource in the first subframe. Since the first subframe is not used to transmit the common message, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the base station must not send the scheduling on the second resource.
  • the PDCCH of the public message Since the first subframe is not used to transmit the common message, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the base station must not send the scheduling on the second resource.
  • the PDCCH of the public message since the first subframe is not used to transmit the common message, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can
  • the UE may not know whether the base station sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot be known. Whether the PDCCH that schedules its proprietary data exists on the subframe, and the PDCCH cannot be determined to be received or merged on the subframe.
  • the base station is configured to send the UE on the overlapping resources of the USS and the CSS. With the possibility of data, it is ensured that the range of the second resource carrying the UE-specific data must not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • the embodiment shown in FIG. 14 provides a basic flow of the downlink control information transmission method provided by the present invention, where the base station determines the first resource, and then determines the first subframe, where the first subframe is not used for transmission. Public message. The base station then determines the second resource in the first subframe.
  • the following embodiment will provide another method for determining the second resource for transmitting the second downlink control information.
  • the basic process of another embodiment provided by the present invention includes:
  • the base station determines the first resource.
  • the base station determines a first resource, where the first resource is used to transmit a common message, where the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the method for the base station to determine the first resource includes: the base station determining the first resource, where the first resource belongs to one or more physical downlink control channel candidates in the common search space, and one or more of the common search spaces
  • the resources corresponding to the physical downlink control channel candidates are resources corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the base station determines a first resource, where the first resource is a resource used for scheduling the first downlink control information for scheduling the common message, and the resource used for the first downlink control information transmission for scheduling the common message is preset. Or signaling configuration.
  • the base station determines a second subframe, and determines a second resource that transmits the second downlink control information in the second subframe.
  • the second downlink control message needs to be sent to the UE.
  • the second downlink control information is used to schedule the proprietary data of the user equipment UE, and may include uplink and downlink resource allocation information, hybrid automatic repeat request information, power control information, and the like for the UE.
  • the second downlink control information is carried by the second resource.
  • the base station determines the second resource that transmits the second downlink control information in the second subframe.
  • the base station sets the second resource to be empty.
  • the base station sets the second resource in the second subframe to be empty.
  • the second resource cannot carry information when the second resource is empty.
  • the base station transmits second downlink control information on the second resource.
  • the second downlink control information is transmitted on the second resource.
  • the base station cannot transmit the second downlink control information on the second resource.
  • the base station can choose to select new resources in other subframes and transmit on the new resources.
  • the second downlink control information may also take other operations, which is not limited in this embodiment.
  • the embodiment provides a downlink control information transmission method, where the base station determines the first resource, and then determines the second resource in the second subframe. If the second resource overlaps with the first resource, the base station sets the second resource to be empty. When the second resource is empty, it cannot be used to transmit scheduling data, so the UE can determine that the base station must not send the PDCCH scheduling the common message on the second resource.
  • the eNB sends the PDCCH on the overlapping resources of the USS and the CSS
  • the UE may not know whether the base station sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot be known.
  • the base station is configured to send the UE on the overlapping resources of the USS and the CSS.
  • the base station is configured to send the UE on the overlapping resources of the USS and the CSS.
  • the range of the second resource carrying the UE-specific data must not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • An existing base station communicates with a mobile phone based on the LTE protocol, and at a certain time, the base station needs to send resource allocation information to the mobile phone.
  • the base station calculates that the second resource overlaps with the first resource.
  • the base station determines that the first resource is a CCE numbered 0 through 15.
  • the ID of the UE is 12, the aggregation level L is 8, and the number of control areas CCE is 32.
  • the base station determines, according to the protocol, that the second resource is one PDCCH in the subframe 0, if the physical downlink control channel candidate index m is 0.
  • the base station calculates that the second resource overlaps with the first resource.
  • the base station does not change the aggregation level L, and the physical downlink control channel candidate index m is 1, and the CCE whose number of the changed second resources is numbered 16 to 23 is calculated again, and does not overlap with the first resource.
  • the base station determines, according to the protocol, that the second resource is one PDCCH in the subframe 4, if the physical downlink control channel candidate index m is 0.
  • the base station calculates that the second resource overlaps with the first resource. at this time,
  • the base station sets the aggregation level L unchanged, and the physical downlink control channel candidate index m is 1, and the CCE whose number of the changed second resources is numbered 8 to 15 is calculated again, and still overlaps with the first resource.
  • the base station changes the aggregation level L to 4, and the physical downlink control channel candidate index m is 1 , and calculates the CCE whose number of the changed second resources is numbered 28 to 31, and does not overlap with the first resource.
  • the base station transmits resource allocation information to the mobile phone on the second resource.
  • the present invention also provides a specific method for receiving downlink control information, and the basic process thereof is shown in FIG. 16, including:
  • the UE determines the first resource.
  • the UE determines a first resource, where the first resource is used to transmit a common message, where the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the UE determines a second resource that transmits the second downlink control information.
  • the second downlink control information is used to schedule the proprietary data of the user equipment UE.
  • the second downlink control information may include uplink and downlink resource allocation information, hybrid automatic repeat request information, power control information, and the like for the UE.
  • Control channels that schedule proprietary data or data channels that carry proprietary data are typically scrambled by the user's proprietary identity.
  • the user's private identity is: Cell-Radio network temporary identifier (C-RNTI), or semi-persistent scheduling RNTI (SPS-RNTI), or temporary radio network temporary identifier (temporary-RNTI) 0 second downlink control information carried by the second resource, in this embodiment, the base station determines a second downlink transmission control information to the second resource.
  • the second resource does not overlap with the first resource.
  • the UE receives second downlink control information on the second resource.
  • the UE After determining the second resource, the UE receives the second downlink control information on the second resource.
  • the embodiment provides a downlink control information receiving method, where the UE determines the first resource and the second resource that transmits the second downlink control information, so that the first resource does not overlap with the second resource, and finally the second resource
  • the second downlink control information is received. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the UE is not on the second resource.
  • a PDCCH that schedules a common message is sent. In the prior art, when the eNB sends the PDCCH on the overlapping resources of the USS and the CSS, the UE may not know whether the base station sends the scheduled public message on the overlapping resource.
  • the PDCCH, and the UE cannot know whether there is a PDCCH scheduling its proprietary data on the subframe, and cannot determine whether to receive and merge the PDCCH on the subframe.
  • This embodiment eliminates the overlap of the base station in the USS and the CSS.
  • the possibility of transmitting the UE-specific data is performed on the resource, and the range of the second resource that carries the UE-specific data is not overlapped with the CSS resource, so that the UE can determine the second downlink control in the second resource.
  • the information is received and combined, which reduces the complexity of receiving the PDCCH by the UE, and improves the receiving efficiency of the PDCCH by the UE.
  • the embodiment shown in FIG. 16 provides a basic flow of the downlink control information receiving method provided by the present invention, where the UE determines the first resource and the second resource that transmits the second downlink control information, so that the first resource and the second resource are There is no overlap, and finally the second downlink control information is received on the second resource.
  • the following embodiment further clarifies how the UE determines the second resource for transmitting the second downlink control information.
  • the basic process of another embodiment provided by the present invention includes:
  • the UE determines the first resource.
  • the UE determines a first resource, where the first resource is used to transmit a common message, where the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the method for the UE to determine the first resource includes: the UE determines the first resource, where the first resource belongs to a resource corresponding to one or more physical downlink control channel candidates in the common search space, and one of the common search spaces Or the resource corresponding to the multiple physical downlink control channel candidates is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the UE determines a first resource, where the first resource is a resource used for scheduling the first downlink control information for scheduling the common message, and the resource used for the first downlink control information transmission for scheduling the common message is preset. Or signaling configuration.
  • the UE determines a first parameter used for transmitting the second downlink control information, and determines, according to the first parameter, a second resource that transmits the second downlink control information.
  • the UE determines the resources used to transmit the downlink control information, generally by the following formula:
  • L L - ⁇ (3 ⁇ 4 + m) intestinal d [(N ccs3 ⁇ 4) / L ] "+ (1)
  • L represents for aggregation level
  • Y k by the recurrence formula: (39827 'Y 3 ⁇ 4 _ 1)
  • the first parameter of the UE may be each parameter of the formula, and the second resource for transmitting the second downlink control information is determined by the formula.
  • the UE may also use other methods to determine the second resource for transmitting the second downlink control information, which is not limited in this embodiment.
  • the first parameter of the UE in this embodiment includes an aggregation level and/or a physical downlink channel candidate index.
  • the UE determines whether the second resource overlaps with the first resource, and if yes, adjusts the first parameter, and determines the second resource according to the adjusted first parameter.
  • the UE After determining the second resource, the UE determines whether the second resource overlaps with the first resource, and if yes, adjusts the first parameter, and determines the second resource according to the adjusted first parameter.
  • the first parameter includes an aggregation level and/or a physical downlink channel candidate index. Therefore, after determining that the second resource overlaps with the first resource, the UE may adjust the aggregation level, and may also adjust the physical downlink channel candidate index. Adjust the aggregation level and the physical downlink channel candidate index, which is not limited here.
  • the UE may adjust the first parameter and determine the second resource according to the first parameter, until the second resource does not overlap with the first resource; and the first parameter may also be adjusted according to a predefined rule.
  • the predefined rule adjusts the first parameter a specified number of times. If the UE does not overlap the first resource and the second resource by adjusting the first parameter by using the foregoing method, the UE may replace the subframe and re-determine the second resource. This embodiment is not limited.
  • the UE receives the second downlink control information on the second resource.
  • the UE After determining the second resource, the UE receives the second downlink control information on the second resource.
  • the embodiment provides a downlink control information transmission method, where the UE determines the first resource, determines the second resource according to the first parameter, and adjusts the first parameter so that the first resource does not overlap with the second resource, and finally The second downlink control information is received on the second resource. Since the second resource and the first resource are not There is an overlap, so the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the UE does not send the PDCCH scheduling the common message on the second resource.
  • the UE when the eNB sends the PDCCH on the overlapping resources of the USS and the CSS, the UE cannot know whether the base station sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot be known. Whether the PDCCH scheduling its proprietary data exists on the subframe, and the PDCCH cannot be determined to be received and combined on the subframe.
  • the base station is configured to send the UE on the overlapping resources of the USS and the CSS. It is possible to ensure that the range of the second resource carrying the UE-specific data does not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • the embodiment shown in FIG. 17 provides a basic flow of the downlink control information receiving method provided by the present invention, where the UE adjusts the first parameter so that the first resource does not overlap with the second resource, and finally the second resource Transmitting the second downlink control information.
  • the following embodiment will provide another method for determining the second resource, which may be such that the first resource does not overlap with the second resource.
  • the basic process of another embodiment provided by the present invention includes:
  • the UE determines the first resource
  • the UE determines a first resource, where the first resource is used to transmit a common message, where the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the method for the UE to determine the first resource includes: the UE determines the first resource, where the first resource belongs to a resource corresponding to one or more physical downlink control channel candidates in the common search space, and one of the common search spaces Or the resource corresponding to the multiple physical downlink control channel candidates is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the UE determines a first resource, where the first resource is a resource used for scheduling the first downlink control information for scheduling the common message, and the resource used for the first downlink control information transmission for scheduling the common message is preset. Or signaling configuration.
  • the second resource is determined by the UE according to the second parameter, or the UE determines the second resource according to the preset function relationship according to the second parameter;
  • Determining, by the UE, the second resource according to the second parameter, or, according to the second parameter, the UE according to the preset function The relationship determines the second resource such that the second resource does not overlap with the first resource.
  • the second parameter includes at least one of an aggregation level, a physical downlink control channel candidate index, an index of a preset subframe, an index of two preset subframes, a preset total CCE number, and a preset constant.
  • the one preset subframe may include: a p-th subframe in a plurality of subframes in which the second downlink control information is transmitted, where p is a preset integer; or, a plurality of subframes in which the second downlink control information is transmitted a subframe having a minimum total CCE number; or, a qth subframe in a subframe having a smallest total number of CCEs among a plurality of subframes transmitting the second downlink control information, where q is a preset integer.
  • a preset subframe may also be other subframes, which is not limited in this embodiment.
  • the preset subframes of the two preset subframes may include: a rth subframe of the plurality of subframes that transmit the second downlink control information, where r is a preset integer; or a subframe index of a subframe having a smallest total number of CCEs among the plurality of subframes transmitting the second downlink control information; or a subframe in the subframe having the smallest total number of CCEs among the plurality of subframes transmitting the second downlink control information s subframes, where s is a preset integer. Any one of the two preset sub-frames may be other sub-frames, which is not limited in this embodiment.
  • the transmission may be at least one of a repetitive transmission, a spread spectrum transmission, a transmission time interval bundling transmission TTI bundling, and a power boost transmission.
  • the preset total CCE number may be the total number of CCEs in the subframe with the smallest or largest total CCE number among the multiple subframes.
  • the total number of CCEs in the preset may also be the total number of CCEs in other subframes, which is not limited in this embodiment.
  • the UE determines the second resource according to the second parameter, or the UE determines the second resource according to the preset function relationship according to the second parameter. For example, the UE determines the second resource according to the following second parameter and the preset function relationship:
  • L is the aggregation level
  • m is the physical downlink control channel candidate index
  • k is the index of a preset subframe
  • ka is the index of another preset subframe
  • N CCE k is the index of the index k.
  • the number of total control channel elements CCE in the control region of the frame (ie, subframe k), N CCE , ka is the total number of CCEs in the control region of the subframe indexed ka
  • n is the value of the UE identifier
  • i is used to indicate the number of the i+1th CCE in the second resource
  • the value of i is An integer from 0 to (L-1)
  • B is a preset constant, and B is used to make the determined second resource not overlap with the first resource.
  • the UE may also determine the second resource by using other functions.
  • the UE may also determine the second resource according to the second parameter by using other methods, which is not limited in this embodiment, and only ensures that the second resource does not communicate with the first resource. Stack it.
  • the UE receives second downlink control information on the second resource.
  • the UE After determining the second resource, the UE receives the second downlink control information on the second resource.
  • the embodiment provides a downlink control information receiving method, where the UE determines the first resource, and determines the second resource according to the first parameter, so that the first resource does not overlap with the second resource, and finally the second resource Receiving second downlink control information. Since the second resource does not overlap with the first resource, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the UE is not on the second resource. A PDCCH that schedules a common message is sent.
  • the UE may not know whether the base station sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot be known. Whether the PDCCH scheduling its proprietary data exists on the subframe, and the PDCCH cannot be determined to be received and combined on the subframe.
  • the base station is configured to send the UE on the overlapping resources of the USS and the CSS. It is possible to ensure that the range of the second resource carrying the UE-specific data does not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • the embodiment shown in FIG. 18 provides a basic flow of the downlink control information receiving method provided by the present invention, where the UE determines the first resource, and determines the second resource according to the first parameter, so that the first resource is used. There is no overlap with the second resource, and finally the second downlink control information is transmitted on the second resource.
  • the following embodiment further clarifies how the UE determines the second resource for transmitting the second downlink control information.
  • the basic process of another embodiment provided by the present invention includes:
  • the UE determines the first resource.
  • the UE determines a first resource, where the first resource is used to transmit a common message, where the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the method for the UE to determine the first resource includes: the UE determines the first resource, where the first resource belongs to a resource corresponding to one or more physical downlink control channel candidates in the common search space, and one of the common search spaces Or the resource corresponding to the multiple physical downlink control channel candidates is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the UE determines a first resource, where the first resource is a resource used for scheduling the first downlink control information for scheduling the common message, and the resource used for the first downlink control information transmission for scheduling the common message is preset. Or signaling configuration.
  • the UE determines the first subframe.
  • the defined subframes can be used to transmit common messages, but in many cases, the defined subframes are not used to transmit common messages.
  • a subframe in which a public message is transmitted a subframe including a system message SI, a subframe of an RAR, and a subframe of a paging message, etc.
  • public messages are not scheduled in subframes other than the time set of transmission moments of all common messages.
  • the first subframe is not used to transmit the public message.
  • the first subframe may be a subframe that is outside the time set of the UE at the time of transmission of all common messages.
  • the UE determines a second resource.
  • the second resource is determined.
  • the second resource belongs to a resource corresponding to one or more physical downlink control channel candidates in the common search space in the first subframe, and/or a resource corresponding to one or more physical downlink control channel candidates in the UE-specific search space.
  • the second resource does not transmit the downlink control information for scheduling the public message because the first subframe does not transmit the common message.
  • the UE receives second downlink control information on the second resource. After determining the second resource, the UE receives the second downlink control information on the second resource.
  • the embodiment provides a downlink control information receiving method, where the UE determines the first resource, and then determines the first subframe, where the first subframe is not used to transmit downlink control information for scheduling the common message.
  • the UE determines the second resource in the first subframe. Since the first subframe is not used to transmit the downlink control information of the common message, the second resource cannot be used to schedule the public message, and can only be used to schedule the private data of the user equipment UE, so the UE can determine that the UE is not in the first
  • the PDCCH for scheduling the public message is sent on the second resource.
  • the UE when the eNB sends the PDCCH on the overlapping resources of the USS and the CSS, the UE cannot know whether the base station sends the PDCCH for scheduling the common message on the overlapping resource, and the UE cannot be known. Whether the PDCCH that schedules its proprietary data exists on the subframe, and the PDCCH cannot be determined to be received or merged on the subframe.
  • the base station is configured to send the UE on the overlapping resources of the USS and the CSS. With the possibility of data, it is ensured that the range of the second resource carrying the UE-specific data must not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • the embodiment shown in FIG. 19 provides the basic process of the downlink control information transmission method provided by the present invention.
  • the UE determines the first resource, and then determines the first subframe, where the first subframe is not used for transmitting the public message.
  • the UE determines the second resource in the first subframe.
  • the following embodiment will provide another method for determining the second resource for transmitting the second downlink control information.
  • the basic process of another embodiment provided by the present invention includes:
  • the UE determines the first resource
  • the UE determines a first resource, where the first resource is used to transmit a common message, where the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the first resource includes at least: a resource used for transmitting the first downlink control information for scheduling the common message, and one or more physical downlink controls in the common search space.
  • the method for the UE to determine the first resource includes: the UE determines the first resource, where the first resource belongs to a resource corresponding to one or more physical downlink control channel candidates in the common search space, and one of the common search spaces Or the resource corresponding to the multiple physical downlink control channel candidates is a resource corresponding to one or more physical downlink control channel candidates preset in the common search space;
  • the UE determines a first resource, where the first resource is used for scheduling the first downlink control information for scheduling the common message, and the resource used for scheduling the first downlink control information for scheduling the common message
  • the source is pre-configured or signaled.
  • the UE determines a second subframe, and determines a second resource that is used to transmit the second downlink control information in the second subframe.
  • the second downlink control information is used to schedule the proprietary data of the user equipment UE, and may include uplink and downlink resource allocation information, hybrid automatic repeat request information, power control information, and the like for the UE.
  • the second downlink control information is carried by the second resource.
  • the UE determines the second resource that transmits the second downlink control information in the second subframe.
  • the UE determines that the second resource is empty.
  • the UE determines that the second resource is empty. Wherein, when the second resource is empty, the UE cannot receive information at the second resource.
  • the UE receives the second downlink control information on the second resource.
  • the UE After determining the second resource, the UE receives the second downlink control information on the second resource.
  • the UE when the second resource is empty, the UE cannot receive the second downlink control information on the second resource.
  • the UE may not receive the second downlink control information in the subframe, but may also select a new resource in the other subframes, and receive the second downlink control information on the new resource, and may take other operations, in this embodiment. Not limited.
  • the embodiment provides a downlink control information transmission method, where the UE determines the first resource, and then determines the second resource in the second subframe. If the second resource overlaps with the first resource, the UE sets the second resource to be empty. When the second resource is empty, it cannot be used to transmit scheduling data, and the UE may determine that the UE does not send the PDCCH scheduling the common message on the second resource.
  • the eNB sends the PDCCH on the overlapping resources of the USS and the CSS
  • the UE may not know whether the base station sends the PDCCH for scheduling the common message on the overlapping resources, and the UE cannot be known.
  • the base station is configured to send the UE on the overlapping resources of the USS and the CSS.
  • the base station is configured to send the UE on the overlapping resources of the USS and the CSS.
  • the range of the second resource carrying the UE-specific data must not overlap with the CSS resource, so that the UE can determine to receive and merge the second downlink control information in the second resource, which is reduced.
  • the complexity of receiving the PDCCH by the UE improves the receiving efficiency of the PDCCH by the UE.
  • An existing mobile phone communicates with a base station based on the LTE protocol, and at a certain time, the base station needs to send resource allocation information to the mobile phone.
  • the handset determines that the first resource is a CCE numbered 0 through 15.
  • the identity of the UE is 12, the aggregation level
  • the mobile phone determines, according to the protocol, that the second resource is one of the PDCCHs in the subframe 0, if the physical downlink control channel candidate index m is 0.
  • the mobile phone calculates that the second resource overlaps with the first resource.
  • the mobile phone maintains the aggregation level L unchanged, and the physical downlink control channel candidate index m is 1 , and the changed CCE of the second resource is numbered 16 to 23, and does not overlap with the first resource.
  • the mobile phone determines, according to the protocol, that the second resource is one PDCCH in the subframe 4, if the physical downlink control channel candidate index m is 0.
  • the mobile phone calculates that the second resource overlaps with the first resource.
  • the mobile phone maintains the aggregation level L unchanged, and the physical downlink control channel candidate index m is 1 , and the CCE whose number of the changed second resources is numbered 8 to 15 is calculated again, and still overlaps with the first resource.
  • the handset receives resource allocation information on the second resource.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the components displayed by the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. You can choose some or all of them according to actual needs.
  • the unit is to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. , including a plurality of instructions for causing a computer device (which may be a personal computer, a server, a storage medium including: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM, Random) Access Memory ), a variety of media such as a disk or a disc that can store program code.
  • a computer device which may be a personal computer, a server, a storage medium including: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM, Random) Access Memory
  • a variety of media such as a disk or a disc that can store program code.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon un mode de réalisation, la présente invention se rapporte à un procédé de transmission d'informations de commande de liaison descendante (DCI), qui se déroule de la manière suivante : une station de base détermine une première ressource comprenant au moins une ressource qui sert à transmettre des premières DCI pour l'ordonnancement d'un message commun, une ressource qui correspond à un ou plusieurs candidats canaux de commande de liaison descendante physique (PDCCH) dans un espace de recherche commun et une ou plusieurs ressources prédéfinies ; la station de base décide de transmettre une seconde ressource de secondes DCI de manière à ce que la seconde ressource ne coïncide pas avec la première, les secondes DCI permettant d'ordonnancer les données exclusives de l'équipement utilisateur (UE) ; et la station de base transmet les secondes DCI par le biais de la seconde ressource. Selon ce mode de réalisation, l'invention concerne également un procédé de réception de DCI correspondant, une station de base correspondante et un UE. Grâce au mode de réalisation de la présente invention, la réception du PDCCH par l'UE est moins complexe et plus efficace.
PCT/CN2014/073913 2014-03-21 2014-03-21 Procédé de transmission d'informations de commande de liaison descendante et dispositif correspondant WO2015139331A1 (fr)

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PCT/CN2014/073913 WO2015139331A1 (fr) 2014-03-21 2014-03-21 Procédé de transmission d'informations de commande de liaison descendante et dispositif correspondant
CN201480000163.8A CN105379344A (zh) 2014-03-21 2014-03-21 一种下行控制信息传输方法以及相关设备

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US20180279273A1 (en) * 2017-03-24 2018-09-27 Mediatek Inc. Downlink Control Signal Design In Mobile Communications
CN108810904B (zh) * 2017-05-04 2020-07-07 华为技术有限公司 无线通信的方法和装置

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