WO2015109520A1 - Procédé et appareil pour transmettre des informations de commande de liaison montante et système de communications - Google Patents

Procédé et appareil pour transmettre des informations de commande de liaison montante et système de communications Download PDF

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Publication number
WO2015109520A1
WO2015109520A1 PCT/CN2014/071356 CN2014071356W WO2015109520A1 WO 2015109520 A1 WO2015109520 A1 WO 2015109520A1 CN 2014071356 W CN2014071356 W CN 2014071356W WO 2015109520 A1 WO2015109520 A1 WO 2015109520A1
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WIPO (PCT)
Prior art keywords
pucch
base station
user equipment
information
transmit
Prior art date
Application number
PCT/CN2014/071356
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English (en)
Chinese (zh)
Inventor
张磊
王轶
周华
Original Assignee
富士通株式会社
张磊
王轶
周华
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.)
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Application filed by 富士通株式会社, 张磊, 王轶, 周华 filed Critical 富士通株式会社
Priority to PCT/CN2014/071356 priority Critical patent/WO2015109520A1/fr
Publication of WO2015109520A1 publication Critical patent/WO2015109520A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/267—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the information rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/40—TPC being performed in particular situations during macro-diversity or soft handoff

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, an apparatus, and a communication system for transmitting uplink control information. Background technique
  • the heterogeneous deployment of the macro cell and the small cell coexistence will become the mobile communication system.
  • One of the main deployment scenarios where the macro cell is responsible for the user's coverage, and the small cell is responsible for the user's data offload (offl 0 ading).
  • a user equipment can be commonly served by a macro cell and a small cell simultaneously by carrier aggregation or dual connectivity.
  • the small cell may be classified into a micro cell, a Pico cell, a femto cell, and the like according to the transmit power of the small cell and the coverage capability and the like.
  • the small cell device since the small cell device is small in size and easy to deploy and maintain, the small cell can be deployed by the operator like a macro cell or by users (for example, commercial users and home users).
  • This flexible deployment of small cells may result in different small cells having different backhaul capabilities; for example, some small cells deployed by operators may have fiber or wireless transmission feedback capabilities, while some small cells deployed by users may There is only feedback capability at the level of DSL (Digital Subscriber Line). Different feedback capabilities involve the data transmission capability of the feedback transmission, and on the other hand, different delays.
  • DSL Digital Subscriber Line
  • the heterogeneous deployment scenario in which the macro cell and the small cell coexist is one of the typical application scenarios of carrier aggregation.
  • a carrier used to maintain a radio resource control (RRC) connection is called a primary component carrier (PCC) or a primary cell (PCell), and other carriers are called secondary component carriers.
  • PCC primary component carrier
  • PCell primary cell
  • SCC Secondary Component Carrier
  • SCell secondary cell
  • the primary considered small cell is deployed by the operator, so there is an ideal backhaul connection between the small cell and the macro cell, that is, there is almost no time between the small cell and the macro cell. Delayed communication, and carriers that can normally perform carrier aggregation (whether macro or small) belong to the same eNB. Therefore, in these versions of the standard, when a UE is simultaneously When two or more carriers (cells) are serving, no matter which carrier (PCC or SCC) is sent to the UE's Physical Downlink Shared Channel (PDSCH), the corresponding ACK/NACK information is The feedback is preferentially performed on the physical uplink control channel (PUCCH, Physical Uplink Control Channel) of the PCell.
  • PUCCH Physical Uplink Control Channel
  • This carrier aggregation without ideal feedback is called dual-connectivity, because the typical application scenario at this stage is that the carrier for carrier aggregation belongs to two eNBs, and there is no ideal feedback between the two eNBs; Ideal feedback between carriers within any one eNB.
  • the primary eNB is called a Master eNB (MeNB) and usually includes a macro cell.
  • the secondary eNB is called Secondary eBN (SeNB), which usually includes a small cell. There is usually no ideal feedback connection between the MeNB and the SeNB.
  • the maximum delay for non-ideal feedback is 60ms.
  • the method includes: the UE receives the PDSCH and demodulates and decodes the data, determines whether the received data is correct, and according to The result of the correctness or not generates ACK or NACK information accordingly, sends ACK/NACK information to the eNB, and the eNB receives the ACK/NACK information and successfully interprets the above process, and the above process cannot exceed 8 ms.
  • FDD frequency division duplex
  • the carrier of the SeNB is used in the dual connectivity of the LTE Release 12, if the carrier aggregation scheme with the ideal feedback is used in LTE Release 10 and Release 11
  • the ACK/NACK information will be severely timed out, causing the UE and the cell under the SeNB to fail to communicate according to the provisions of the existing standards.
  • the UE can simultaneously transmit the PUCCH on the uplink carrier of the PCell of the MeNB and the uplink carrier of the PCell of the SeNB.
  • PCell on SeNB is just a designation indicating that it is a relatively special cell within the SeNB from the perspective of the UE, and it should be configured with both the uplink carrier and the downlink carrier.
  • the uplink carrier of the special cell may include at least the PUCCH resource configured for the UE, that is, the UE may send the PUCCH to the SeNB through the uplink carrier of the cell.
  • This term neither indicates nor denies that the cell must have exactly the same functionality as the MeNB's PCell.
  • This designation also does not negate that one or more of the cells other than the cell in the SeNB have some or all of the functions of the cell.
  • the MeNB and the SeNB are not able to perform the power control information for scheduling the UE in real time. Therefore, the power used by the UE to transmit the PUCCH to the MeNB on the PCell of the MeNB in one subframe is controlled by the MeNB, and the UE is in the UE.
  • the power used by the SeNB to transmit the PUCCH to the MeNB is controlled by the SeNB. In this case, in some subframes, the sum of the transmit powers configured by the two eNBs for the UE may exceed the maximum transmit power that the UE can support or the maximum transmit power allowed by the UE. Considering the importance of the MeNB and ensuring that the transmission power of the PUCCH of the MeNB is a reasonable choice, the PUCCH transmission of the SeNB can be directly abandoned.
  • Embodiments of the present invention provide a method, an apparatus, and a communication system for transmitting uplink control information. By reducing the number of information bits carried by the PUCCH and keeping the PUCCH transmission as much as possible, unnecessary transmission can be reduced.
  • a method for transmitting uplink control information includes:
  • the number of information bits carried by the PUCCH is reduced when the power of the PUCCH that can be used by the user equipment to transmit the PUCCH in a certain subframe is not up to the transmission power of the PUCCH configured by the first base station for the user equipment;
  • the PUCCH after the first base station transmits the number of reduction information bits.
  • a transmission apparatus for uplink control information includes:
  • the information processing unit reduces the number of information bits carried by the PUCCH when the power that can be used to transmit the PUCCH in a certain subframe does not reach the transmit power for transmitting the PUCCH configured by the first base station for the user equipment;
  • an information transmission unit that transmits the PUCCH after reducing the number of information bits to the first base station.
  • a communication system includes: a user equipment, where a power that can be used to transmit a PUCCH in a certain subframe cannot reach the first base station as the user equipment.
  • the configured transmit power for transmitting the PUCCH is configured, the information bits carried by the PUCCH are reduced. And the PUCCH after transmitting the reduced number of information bits to the first base station;
  • the first base station receives the PUCCH transmitted by the user equipment in the subframe.
  • a method for transmitting uplink control information includes:
  • a transmission apparatus for uplink control information includes:
  • the information receiving unit receives the PUCCH transmitted by the user equipment in a certain subframe, where the power of the user equipment for transmitting the PUCCH does not reach the transmission power of the PUCCH configured by the base station for the user equipment The number of information bits carried by the PUCCH is reduced.
  • a computer readable program wherein when the program is executed in a user equipment, the program causes a computer to perform uplink control information as described above in the user equipment Transmission method.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a transmission method of uplink control information as described above in a user equipment.
  • a computer readable program wherein when the program is executed in a base station, the program causes a computer to perform a transmission method of uplink control information as described above in the base station .
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a transmission method of uplink control information as described above in a base station.
  • the beneficial effects of the embodiments of the present invention are: in the case that the sum of the transmit power exceeds the maximum transmit power that the UE can support, the number of information bits carried by the PUCCH is reduced, and the transmission of the PUCCH such as the SeNB is retained as much as possible, and unnecessary PDSCH, for example, can be reduced. Transmission, avoiding excessive waste of resources.
  • FIG. 1 is a schematic flow chart of a transmission method according to Embodiment 1 of the present invention.
  • FIG. 2 is another schematic flowchart of a transmission method according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic flow chart of a transmission method according to Embodiment 2 of the present invention.
  • Figure 4 is a block diagram showing a configuration of a transmission apparatus according to Embodiment 3 of the present invention.
  • FIG. 5 is a schematic block diagram showing a system configuration of a user equipment according to Embodiment 3 of the present invention.
  • Figure 6 is a block diagram showing a configuration of a transmission apparatus according to Embodiment 4 of the present invention.
  • Figure 7 is a schematic block diagram showing the system configuration of a base station according to Embodiment 4 of the present invention.
  • Figure 8 is a block diagram showing the configuration of a communication system according to a fifth embodiment of the present invention.
  • Example 1 The embodiment of the invention provides a method for transmitting uplink control information, and the invention is described from the user equipment side.
  • FIG. 1 is a schematic flowchart of a transmission method according to an embodiment of the present invention. As shown in FIG. 1, the transmission method includes:
  • Step 101 The power of the PUCCH that can be used by the user equipment in a certain subframe is less than the transmission power of the PUCCH configured by the first base station for the user equipment, and the information ratio of the PUCCH is reduced.
  • Step 102 The user equipment transmits, to the first base station, a PUCCH after reducing the number of information bits.
  • the first base station may be a SeNB, and the first base station may configure, for the user equipment, a transmit power for transmitting the PUCCH, for example, may be denoted as P1.
  • the user equipment has the maximum allowed transmit power due to its own capabilities or limitations imposed by the base station side, etc., and has power that can be used to transmit PUCCH in one subframe, for example, can be recorded as Pc.
  • the user equipment may transmit the PUCCH to the first base station and the second base station, respectively, where the first base station may be the SeNB, the second base station may be the MeNB, or the first base station may be the base station of the small cell,
  • the second base station may also be a base station of the macro cell.
  • the present invention is not limited thereto, and a specific base station can be determined according to actual conditions.
  • the invention is not limited to scenarios in which two base stations serve user equipment.
  • it may be applied to a scenario in which a PUCCH is transmitted only to one base station, or is also applicable to a scenario in which a PUCCH is transmitted to two or more base stations.
  • the PUCCH is transmitted to the SeNB and the MeNB by the user equipment as an example for description.
  • FIG. 2 is another schematic flowchart of a transmission method according to an embodiment of the present invention. As shown in FIG. 2, the transmission method includes:
  • Step 201 When transmitting the PUCCH to the second base station and the first base station, the user equipment determines, by the first base station, the transmit power (for example, P1) configured for the user equipment to transmit the PUCCH and the second base station configured for the user equipment. Whether the sum of the transmit power (e.g., P2) used to transmit the PUCCH is greater than the allowed maximum transmit power (e.g., Pmax) of the user equipment;
  • the maximum transmit power allowed may be the maximum transmit power allowed by the base station side, or Refers to the maximum transmit power allowed by the user equipment's own capabilities.
  • the present invention is not limited to the above two cases.
  • step 202 When Pl+P2>Pmax, step 202 is performed; when Pl+P2 Pmax, step 203 is performed.
  • Step 202 The user equipment determines whether the transmit power (for example, P2) configured by the second base station for transmitting the PUCCH is less than or equal to the maximum transmit power of the user equipment.
  • the transmit power for example, P2
  • step 204 is performed; when P2 > Pmax, step 207 is performed.
  • Step 203 The user equipment transmits a PUCCH to the first base station by using the transmit power (P1) for transmitting the PUCCH configured by the first base station, and the UE is configured to transmit the PUCCH by using the second base station as the user equipment.
  • Power (P2) transmits the PUCCH to the second base station.
  • Step 204 The user equipment transmits the PUCCH to the second base station by using the transmit power (P2) configured by the second base station for transmitting the PUCCH.
  • P2 transmit power
  • the method further includes:
  • Step 205 The user equipment reduces the number of information bits carried in the PUCCH transmitted to the first base station.
  • Step 206 The user equipment transmits the PUCCH after reducing the number of information bits to the first base station.
  • Step 207 The user equipment transmits the PUCCH to the second base station with the maximum allowed transmit power Pmax.
  • FIG. 2 only schematically shows the transmission method of the present invention, but the present invention is not limited thereto.
  • the order of execution of the above steps can also be adjusted according to actual conditions.
  • the UE needs to simultaneously transmit a PUCCH to a second base station (e.g., MeNB) and a first base station (e.g., SeNB) in a certain subframe.
  • the UE transmits the PUCCH of the MeNB configured by the MeNB to the PUCCH of the MeNB; and the PUCCH for the SeNB adopts the method of the present invention.
  • the PUCCH of the SeNB can be transmitted by using the remaining power other than the PUCCH of the transmitting MeNB (the uplink transmission power that the SeNB does not configure for the user equipment).
  • the PUCCH after the number of information reduction bits is transmitted to the first base station may include: when the user equipment is configured by the first base station to adopt a PUCCH format capable of carrying multiple carrier feedbacks, The user equipment uses the PUCCH format that carries only a single carrier feedback in the subframe to transmit the ACK/NACK information corresponding to the first cell of the first base station.
  • the eNB configures the UE to adopt a PUCCH format that can carry multiple carrier ACK/NACKs (PUCCH Format) is transmitted, and the UE transmits the ACK/NACK information corresponding to the eNB subordinate PCell by using only the PUCCH format of the ACK/NACK carrying only a single carrier.
  • PUCCH Format PUCCH Format
  • the first cell in the first base station (e.g., SeNB) is referred to as Pcell, for example.
  • Pcell the first cell in the first base station
  • the uplink carrier of the special cell may include at least the PUCCH resource configured for the UE, that is, the UE may send the PUCCH to the SeNB through the uplink carrier of the cell.
  • This term neither indicates nor denies that the cell must have exactly the same functionality as the MeNB's PCell.
  • This designation also does not negate that one or more of the cells other than the cell in the SeNB have some or all of the functions of the cell.
  • the PUCCH format that can carry multiple carrier feedbacks may be PUCCH Format 3 or PUCCH Format lb with channel selection; the PUCCH format that carries only a single carrier feedback may be PUCCH Format la or PUCCH Format. Lb.
  • the present invention is not limited thereto, and may be other PUCCH formats, for example.
  • the method may further include: the user equipment abandons the ACK/NACK information corresponding to the second cell of the first base station (for example, other cells than the PCell) in the subframe; and abandoning the transmission of the first base station. Corresponding periodic CQI information.
  • the UE will drop the transmission of ACK/NACK information corresponding to all cells except the PCell of the eNB in the subframe. In this case, if there is feedback in the subframe and the periodic CQI information of any cell under the eNB, the UE will also give up the feedback of the CQI information.
  • reducing the number of information bits carried by the PUCCH may include: when the user equipment is configured by the first base station to adopt a PUCCH format capable of carrying multiple carrier feedback, the user equipment Spatial HARQ-ACK bundling is performed within a subframe.
  • the UE performs spatial HARQ-ACK bundling in each subframe of each subcarrier (spatial HARQ) - ACK bundling), whether or not the conditions for implementing the spatial HARQ-ACK bundling specified by the existing standards are met on the subcarrier.
  • a PUCCH format eg, PUCCH Format 3
  • spatial HARQ-ACK bundling in each subframe of each subcarrier (spatial HARQ) - ACK bundling), whether or not the conditions for implementing the spatial HARQ-ACK bundling specified by the existing standards are met on the subcarrier.
  • spatial HARQ-ACK bundling means that when the UE receives two transport blocks (TB, Transport Block) in the same subframe (Subframe) of the same carrier, the UE Logically AND the ACK/NACK information corresponding to the two TBs, thereby One bit of ACK/NACK information is obtained.
  • each UE supports up to 5 carriers. If a UE is configured with 5 carriers, in the case of performing spatial HARQ-ACK bundling, when all carriers are FDD carriers, a Format3 PUCCH carries a maximum of 6 bits (below the number of information bits is 11) Bit), where 5 bits are ACK/NACK information (10 bits before the number of information bits is reduced), and 1 bit is Schroughing Request (SR) information.
  • SR Schroughing Request
  • reducing the number of information bits carried by the PUCCH may include: when the user equipment is configured by the first base station to adopt a PUCCH format capable of carrying multiple carrier feedback, the user equipment HARQ-ACK bundling is employed within the carrier.
  • the eNB configures the UE to perform ACK/NACK information feedback using a PUCCH format (e.g., PUCCH Format 3) that can carry multiple carrier ACK/NACKs
  • the UE adopts HARQ-ACK bundling in each carrier.
  • the user combines the HARQ information of all subframes in one HARQ feedback set into two HARQ-ACK bits by logical AND operation, corresponding to codeword 0 and codeword 1, respectively.
  • the foregoing HARQ feedback set is only all downlink subframes corresponding to the feedback ACK/NACK information carried in one uplink subframe.
  • a PUCCH format eg, PUCCH Format 3
  • the UE performs spatial HARQ-ACK bundling in each subframe (spatial HARQ-ACK bundling).
  • the UE adopts HARQ-ACK bundling (HARQ-ACK bundling) in each carrier.
  • a Format3 PUCCH carries a maximum of 11 bits, of which 10 bits are ACK/NACK information and 1 bit is SR information.
  • reducing the number of information bits carried by the PUCCH may include: when the user equipment is configured by the first base station to adopt a PUCCH format capable of carrying multiple carrier feedback, the user equipment Spatial HARQ-ACK bundling is performed within the subframe, and HARQ-ACK bundling is employed within the carrier.
  • step 101 or step 205 when the user equipment is configured by the first base station to adopt a PUCCH format capable of carrying multiple carrier feedbacks, if the user equipment performs spatial HARQ-ACK bundling in a subframe, Or the user equipment adopts HARQ-ACK bundling in the carrier, or the user equipment performs spatial HARQ-ACK bundling in the subframe and adopts HARQ-ACK bundling in the carrier; Then, in step 102 or step 206, the UE transmits in a PUCCH format that can carry multiple carrier ACK/NACKs, for example, using PUCCH Format 3. And, the user equipment can transmit the PUCCH on the resource specified by the first base station to indicate power limitation.
  • the user equipment has only one TDD carrier, and is configured by the first base station to adopt a PUCCH format capable of carrying multiple carrier feedbacks (for example, PUCCH Format 3), in step 101 or step 205, the user The device adopts HARQ-ACK bundling in the carrier; and in step 102 or step 206, the user equipment adopts a PUCCH format (for example, PUCCH Format la/PUCCH Format lb) carrying only a single carrier feedback to the first base station in the subframe. Transmit PUCCH.
  • This PUCCH format which carries a single carrier feedback, can be consistent with the feedback form of ACK/NACK for a single TDD carrier in LTE Release 8, for backward compatibility.
  • FIG. 3 is a schematic flowchart of a transmission method according to an embodiment of the present invention. As shown in FIG. 3, the transmission method includes:
  • Step 301 The base station receives a PUCCH that is transmitted by the user equipment in a certain subframe.
  • the power of the user equipment that can be used to transmit the PUCCH does not reach the transmit power configured by the base station for transmitting the PUCCH.
  • the number of information bits carried by the PUCCH is reduced.
  • the eNB side receives the PUCCH sent by the UE.
  • the eNB is expected to receive ACK/NACK information fed back by a certain UE, and the ACK/NACK information is received by the UE according to downlink data or signaling on the received PCC and/or SCC of the eNB (for example, The PDSCH is used to release the semi-persistently scheduled PDCCH) and is fed back.
  • the UE will detect on the PUCCH Format la/lb resource reserved for the UE. . If the eNB detects the PUCCH of the Format la/lb sent by the UE on the reserved PUCCH Format la/lb resource, the eNB considers that there are two possibilities: (1) The UE is not able to receive Corresponding downlink data or signaling carried on the SCC (for example, the PDCCH corresponding to the PDSCH is not correctly detected); (2) The UE's PUCCH power on the eNB is limited. The eNB retransmits the corresponding downlink data or signaling (for example, PDSCH) carried on the SCC corresponding to the subframe.
  • Corresponding downlink data or signaling carried on the SCC (for example, the PDCCH corresponding to the PDSCH is not correctly detected)
  • the UE's PUCCH power on the eNB is limited.
  • the eNB retransmits the corresponding downlink data or signaling (for example, PDSCH
  • the base station may configure a resource for the user equipment to indicate power limitation.
  • the corresponding configuration information may be directly sent by the base station to the user equipment, or may be sent to the user equipment via other base stations; however, the invention is not limited thereto.
  • the UE may be configured with a resource dedicated to transmitting PUCCH when power is limited by RRC signaling.
  • the PUCCH may be transmitted on the resource for indicating power limitation, in a PUCCH format capable of carrying multiple carrier feedbacks, or in a PUCCH format carrying only a single carrier feedback.
  • the PUCCH format that can carry multiple carrier feedbacks may be PUCCH Format 3 or PUCCH Format lb with channel selection 0.
  • the PUCCH format that only carries a single carrier feedback may be PUCCH Format la or PUCCH Format lb.
  • the present invention is not limited thereto, and may be, for example, other PUCCH formats.
  • the transmitting method may further include: the base station detecting the PUCCH on the resource for indicating power limitation.
  • the eNB may detect a PUCCH sent by the UE, a PUCCH format carrying multiple carriers ACK/NACK, or a PUCCH format carrying a single carrier ACK/NACK on the resource allocated to the UE for power-limited resources. transmission.
  • the eNB if the eNB fails to detect the PUCCH Format3 resource sent by the UE on the common resource for PUCCH Format3 transmission, the eNB detects the UE on the resource allocated for the PUCCH Format3 dedicated to the power allocation when the UE is allocated. Transmitted PUCCH Format3.
  • the eNB may first detect the PUCCH Format 3 sent by the UE on the resource allocated to the PUCCH Format3 for the UE when the power is limited, and then detect the PUCCH Format3 resource sent by the UE on the common resource for the PUCCH Format3 transmission. For example, if the eNB continuously detects PUCCH Format 3 in the restricted resource for a duration, the eNB may first detect on the restricted resource.
  • the eNB if the eNB fails to detect the PUCCH Format la/lb resource sent by the UE on the common resource for PUCCH Format la/lb transmission, the eNB transmits the PUCCH when the dedicated power allocation is allocated for the UE.
  • the PUCCH Format la/lb sent by the UE is detected on the resource of Format la/lb.
  • the eNB may also first transmit the PUCCH Format la/lb when the power allocation is reserved for the UE.
  • the PUCCH Format la/lb sent by the UE is detected on the source, and the PUCCH Format la/lb resource sent by the UE is detected on the common resource for PUCCH Format la/lb transmission. For example, if the eNB continuously detects the PUCCH Format la/lb in the restricted resource for a duration, the eNB may first detect on the restricted resource.
  • the eNB if the eNB is dedicated to power limitation, it transmits multiple carriers ACK/NACK.
  • the PUCCH format is transmitted on the PUCCH format or the PUCCH format resource carrying the single carrier ACK/NACK, and the PU1CH eNB reconfigures the UE's PUCCH transmission.
  • the configuration of the PUCCH transmission may include configuring the transmit power of the PUCCH, but the present invention is not limited thereto.
  • the eNB If the eNB detects the PUCCH Format3 sent by the UE on the resource dedicated to the PUCCH Format3, the eNB interprets the content carried by the PUCCH Format3 and performs corresponding scheduling according to the content.
  • the eNB may refer to the CQI information when performing downlink transmission to the UE.
  • the eNB If the eNB detects the PUCCH Format3 resource sent by the UE in the normal resource for the PUCCH Format3 transmission, the eNB interprets the content carried by the PUCCH Format3, and performs corresponding scheduling according to the content.
  • the eNB may refer to the CQI information when performing downlink transmission to the UE.
  • the embodiment of the invention provides a device for transmitting uplink control information, which is applied to the user equipment side.
  • the embodiment of the present invention corresponds to Embodiment 1, and the same content is not described again.
  • 4 is a schematic structural diagram of a transmission apparatus according to an embodiment of the present invention.
  • the transmission apparatus 400 includes: an information processing unit 401 and an information transmission unit 402.
  • the information processing unit 401 is in a certain subframe.
  • the power that can be used for transmitting the PUCCH is less than the transmit power for transmitting the PUCCH configured by the first base station for the user equipment, the number of information bits carried by the PUCCH is reduced; after the information transmission unit 402 transmits the number of information bits to the first base station PUCCH.
  • the transmission device 400 may further include: a power determining unit 403, when transmitting a PUCCH to the second base station and the first base station, determining, by the first base station, a transmit power configured by the user equipment for transmitting the PUCCH Whether the sum of the transmit powers configured by the second base station for transmitting the PUCCH for the user equipment is greater than the maximum transmit power allowed by the user equipment;
  • the information transmission unit 402 is further configured to: when the sum of the transmit powers is greater than a maximum transmit power of the user equipment, and the transmit power of the second base station configured for the user equipment for transmitting the PUCCH is less than or equal to the maximum transmit allowed by the user equipment. At the time of power, the PUCCH is transmitted to the second base station by using the transmit power of the second base station configured for the user equipment for transmitting the PUCCH.
  • the information transmission unit 402 is further configured to: the sum of the transmit powers is greater than the maximum transmit power of the user equipment, and the transmit power of the second base station configured for the user equipment for transmitting the PUCCH is greater than the maximum transmit power allowed by the user equipment.
  • the PUCCH is transmitted to the second base station at the maximum allowed transmit power.
  • the information transmission unit 402 may be specifically configured to: when the user equipment is configured by the first base station to adopt a PUCCH format capable of carrying multiple carrier feedback, adopting a PUCCH format carrying only a single carrier feedback in the subframe And transmitting ACK/NACK information corresponding to the first cell of the first base station.
  • the first cell in the first base station (e.g., SeNB) is referred to as Pcell, for example.
  • Pcell the first cell in the first base station
  • the uplink carrier of the special cell may include at least the PUCCH resource configured for the UE, that is, the UE may send the PUCCH to the SeNB through the uplink carrier of the cell.
  • This term neither indicates nor denies that the cell must have exactly the same functionality as the MeNB's PCell.
  • This designation also does not negate that one or more of the cells other than the cell in the SeNB have some or all of the functions of the cell.
  • the information transmission unit 402 is further configured to: abandon the ACK/NACK information corresponding to the second cell (other than the first cell) of the first base station in the subframe; and abandon the period corresponding to the first base station Sexual CQI information.
  • the information processing unit 401 is specifically configured to: perform spatial HARQ-ACK bundling in a subframe when the user equipment is configured by the first base station to adopt a PUCCH format capable of carrying multiple carrier feedbacks.
  • the information processing unit 401 may be specifically configured to: when the user equipment is configured by the first base station to adopt a PUCCH format capable of carrying multiple carrier feedback, adopt HARQ-ACK binding in the carrier.
  • the information processing unit 401 may be specifically configured to: perform spatial HARQ-ACK bundling in a subframe when the user equipment is configured by the first base station to adopt a PUCCH format capable of carrying multiple carrier feedback, and The HARQ-ACK bundle is used in the carrier.
  • the information transmission unit 402 may be specifically configured to: transmit the PUCCH on a resource specified by the first base station to indicate power limitation.
  • the information processing unit 401 employs HARQ-ACK bundling in the carrier when the user equipment has only one TDD carrier and is configured by the first base station to adopt a PUCCH format capable of carrying multiple carrier feedbacks;
  • the transmitting unit 402 transmits the PUCCH to the first base station in the PUCCH format in which only a single carrier feedback is carried in the subframe.
  • the embodiment of the invention further provides a user equipment, which includes the uplink control information transmission device as described above.
  • FIG. 5 is a schematic block diagram showing the system configuration of the user equipment 500 according to the embodiment of the present invention.
  • the user equipment 500 can include a central processing unit 100 and a memory 140; the memory 140 is coupled to the central processing unit 100.
  • the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
  • the functionality of the transmission device of the upstream control information may be integrated into the central processor 100.
  • the central processing unit 100 can be configured to implement the transmission method of the uplink control information as described in Embodiment 1. For example, it may be configured to: when the power that can be used for transmitting the PUCCH in a certain subframe does not reach the transmit power for transmitting the PUCCH configured by the first base station for the user equipment, reduce the number of information bits carried by the PUCCH; The PUCCH after reducing the number of information bits is transmitted to the first base station.
  • the transmission device of the uplink control information may be configured separately from the central processing unit 100.
  • the transmission device of the uplink control information may be configured as a chip connected to the central processing unit 100, and implemented by the control of the central processing unit.
  • the user equipment 500 may further include: a communication module 110, an input unit 120, an audio processing unit 130, a display 160, and a power supply 170. It should be noted that the user equipment 500 does not have to include all the components shown in FIG. 5; in addition, the user equipment 500 may also include components not shown in FIG. 5, and reference may be made to the prior art.
  • central processor 100 also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device that receives input and controls each of user devices 500. The operation of the part.
  • the memory 140 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable device.
  • the above-mentioned information related to the failure can be stored, and a program for executing the related information can be stored.
  • the central processing unit 100 can execute the program stored in the memory 140 to implement information storage or processing and the like.
  • the functions of other components are similar to those of the existing ones and will not be described here.
  • the various components of user device 500 may be implemented by dedicated hardware, firmware, software, or a combination thereof without departing from the scope of the invention.
  • the embodiment of the invention provides a transmission device for uplink control information, which is applied to a base station side.
  • the embodiment of the present invention corresponds to Embodiment 2, and the same content is not described again.
  • FIG. 6 is a schematic diagram of a configuration of a transmission apparatus according to an embodiment of the present invention.
  • the transmission apparatus 600 includes: an information receiving unit 601, which receives a PUCCH transmitted by a user equipment in a certain subframe; wherein, the user The device reduces the number of information bits carried by the PUCCH when the power used to transmit the PUCCH does not reach the transmit power configured by the base station for transmitting the PUCCH.
  • the transmission device 600 may further include: a resource configuration unit 602, configured to indicate, by the user equipment, a resource limited resource.
  • the PUCCH may be transmitted on the resource for indicating power limitation, in a PUCCH format capable of carrying multiple carrier feedbacks or in a PUCCH format carrying only a single carrier feedback.
  • the transmission device 600 may further include: an information detecting unit 603, where the indication is used The PUCCH is detected on a power limited resource.
  • FIG. 7 is a schematic diagram of a structure of a base station according to an embodiment of the present invention.
  • base station 700 can include: a central processing unit (CPU) 200 and memory 210; and memory 210 coupled to central processor 200.
  • the memory 210 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 200 to receive various information transmitted by the user equipment and to transmit request information to the user equipment.
  • the functionality of the transmission device of the upstream control information may be integrated into the central processor 200.
  • the central processing unit 200 can be configured to implement the transmission method of the uplink control information as described in Embodiment 2.
  • the transmission device of the uplink control information may be configured separately from the central processing unit.
  • the transmission device of the uplink control information may be configured as a chip connected to the central processing unit 200, and the uplink processor controls the uplink. The function of the transmission device that controls the information.
  • the base station 700 may further include: a transceiver 220, an antenna 230, and the like; wherein the functions of the above components are similar to those of the prior art, and details are not described herein again. It should be noted that the base station 700 does not have to include all of the components shown in FIG. 7; in addition, the base station 700 may also include components not shown in FIG. 7, and reference may be made to the prior art.
  • the embodiment of the present invention further provides a communication system, including the user equipment as described in Embodiment 3 and the base station as described in Embodiment 4.
  • a communication system including the user equipment as described in Embodiment 3 and the base station as described in Embodiment 4.
  • the same contents as those of Embodiments 1 to 4 will not be described again.
  • FIG. 8 is a schematic diagram of a configuration of a communication system according to an embodiment of the present invention.
  • the communication system 800 includes a user equipment 801 and a first base station 802. among them,
  • the user equipment 801 reduces the number of information bits carried by the PUCCH when the power that can be used for transmitting the PUCCH in a certain subframe does not reach the transmission power configured by the first base station 802 for the user equipment 801 to transmit the PUCCH;
  • the first base station 802 transmits a PUCCH after reducing the number of information bits;
  • the first base station 802 receives the PUCCH transmitted by the user equipment 801 in the subframe.
  • the communication system 800 may further include:
  • the second base station 803 receives the PUCCH that the user equipment 801 transmits for the transmission power of the PUCCH configured by the second base station 803 for the user equipment 801.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a user equipment, the program causes a computer to perform transmission of uplink control information as described in Embodiment 1 above in the user equipment. method.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the transmission method of the uplink control information as described in Embodiment 1 above in the user equipment.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a base station, the program causes a computer to execute a transmission method of the uplink control information as described in Embodiment 2 above in the base station.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the transmission method of the uplink control information as described in Embodiment 2 above in the base station.
  • the above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

Abstract

Des modes de réalisation, l'invention concerne un procédé et un appareil permettant de transmettre des informations de commande de liaison montante, et un système de communications. Le procédé de transmission comprend les étapes suivantes : lorsqu'une puissance pouvant être utilisée pour transmettre un canal physique de commande de liaison montante (PUCCH) dans une sous-trame n'atteint pas la puissance de transmission qui est déterminée par une première station de base pour un équipement utilisateur et est utilisée pour transmettre le PUCCH, l'équipement utilisateur réduit le nombre de bits d'informations portés par le PUCCH, et transmet à la première station de base le PUCCH dont le nombre de bits d'informations a été réduit. Dans les modes de ralisation de l'invention, dans le cas où la puissance de transmission totale dépasse la puissance de transmission maximum supportée par un équipement utilisateur, le nombre de bits d'information supportés un PUCCH est réduit tout en maintenant dans la mesure du possible la transmission du PUCCH, de telle sorte qu'une transmission inutile peut être réduite et le gâchis de ressources évité.
PCT/CN2014/071356 2014-01-24 2014-01-24 Procédé et appareil pour transmettre des informations de commande de liaison montante et système de communications WO2015109520A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100197339A1 (en) * 2009-02-03 2010-08-05 Nokia Siemens Networks Oy Uplink Power Control For Multiple Component Carriers
CN102300305A (zh) * 2011-09-23 2011-12-28 电信科学技术研究院 一种上行功率控制的方法及装置
CN102858005A (zh) * 2011-06-30 2013-01-02 中兴通讯股份有限公司 一种上行测量参考信号发送控制方法和用户设备

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100197339A1 (en) * 2009-02-03 2010-08-05 Nokia Siemens Networks Oy Uplink Power Control For Multiple Component Carriers
CN102858005A (zh) * 2011-06-30 2013-01-02 中兴通讯股份有限公司 一种上行测量参考信号发送控制方法和用户设备
CN102300305A (zh) * 2011-09-23 2011-12-28 电信科学技术研究院 一种上行功率控制的方法及装置

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