WO2016065620A1 - 混合自动重传反馈的获取方法、装置以及通信系统 - Google Patents

混合自动重传反馈的获取方法、装置以及通信系统 Download PDF

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Publication number
WO2016065620A1
WO2016065620A1 PCT/CN2014/090065 CN2014090065W WO2016065620A1 WO 2016065620 A1 WO2016065620 A1 WO 2016065620A1 CN 2014090065 W CN2014090065 W CN 2014090065W WO 2016065620 A1 WO2016065620 A1 WO 2016065620A1
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Prior art keywords
serving cell
user equipment
frequency band
uplink
secondary serving
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PCT/CN2014/090065
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English (en)
French (fr)
Inventor
徐海博
张翼
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富士通株式会社
徐海博
张翼
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Application filed by 富士通株式会社, 徐海博, 张翼 filed Critical 富士通株式会社
Priority to KR1020177012078A priority Critical patent/KR20170068510A/ko
Priority to EP14905130.2A priority patent/EP3214781A4/en
Priority to CN201480082335.0A priority patent/CN107078835A/zh
Priority to JP2017522855A priority patent/JP2017536757A/ja
Priority to PCT/CN2014/090065 priority patent/WO2016065620A1/zh
Publication of WO2016065620A1 publication Critical patent/WO2016065620A1/zh
Priority to US15/499,189 priority patent/US20170237539A1/en

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    • 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
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0047—Decoding adapted to other signal detection operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a communication system for acquiring hybrid automatic retransmission feedback.
  • the serving cell on the unlicensed frequency band can be configured as an independent serving cell to the user equipment (UE, User Equipment) for communication by the user equipment, or can be used on the unlicensed frequency band by using the carrier aggregation method or the dual connection method in the LTE system.
  • the serving cell is configured as a secondary serving cell to the user equipment, and the primary serving cell is a serving cell on the licensed frequency band.
  • the working mode of the primary serving cell may be a Frequency Division Duplex (FDD) mode or a Time Division Duplex (TDD) mode; the secondary serving cell on the unlicensed frequency band may also select an FDD mode.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • LBT listen-before-talk
  • the specific implementation of LBT can be various.
  • the basic idea of LBT is that the sender must first listen for a period of time before it occupies the channel on the unlicensed band. The transmitting end can send a signal on the channel only if the channel is always idle during the period of listening. If the channel is found to be busy during the listening period, the sender needs to automatically back off for a period of time before listening to whether the channel is available.
  • the inventor has found that after the user equipment sends the uplink data on the serving cell in the unlicensed frequency band, according to the Hybrid Automatic Repeat reQuest (HARQ) timing relationship, the base station needs to obtain the physical HARQ indicator channel after a period of time. (PHICH, Physical HARQ Indicator CHannel) The HARQ feedback information sent.
  • HARQ Hybrid Automatic Repeat reQuest
  • the subframe in which the base station needs to transmit the PHICH may be occupied by other systems, so that the user equipment cannot obtain the correct HARQ feedback information in the predetermined subframe.
  • Embodiments of the present invention provide a method, an apparatus, and a communication system for acquiring uplink hybrid automatic retransmission feedback.
  • the user equipment obtains the correct HARQ feedback information on the serving cell in the unlicensed band.
  • a method for obtaining hybrid automatic retransmission feedback is provided, which is applied to a user equipment, where the obtaining method includes:
  • the physical downlink control channel is decoded in the downlink subframe corresponding to the uplink subframe on the secondary serving cell of the unlicensed frequency band, and the physical hybrid automatic repeat request indication channel is not decoded.
  • a device for acquiring a hybrid automatic retransmission feedback which is configured in a user equipment, where the obtaining device includes:
  • the data sending unit sends the uplink data in an uplink subframe on the secondary serving cell of the unlicensed band
  • a recording unit when transmitting the uplink data, setting a variable for recording a feedback state of the uplink data transmission to an ACK;
  • a subframe determining unit determining a downlink subframe corresponding to the uplink subframe
  • the decoding unit decodes the physical downlink control channel in the downlink subframe corresponding to the uplink subframe on the secondary serving cell of the unlicensed frequency band, and does not decode the physical hybrid automatic repeat request indication channel.
  • a method for obtaining hybrid automatic retransmission feedback is provided, which is applied to a base station, where the obtaining method includes:
  • a device for acquiring hybrid automatic retransmission feedback which is configured in a base station, where the obtaining device includes:
  • a configuration unit configured to configure a secondary serving cell of the unlicensed frequency band for the user equipment, and configure an associated cell of the secondary serving cell for the user equipment; and enable the user equipment to send uplink on the secondary serving cell of the unlicensed frequency band
  • feedback information of the uplink hybrid automatic retransmission is obtained on the associated cell.
  • a communication system comprising: a user equipment configured with the acquisition device as described in the second aspect;
  • the communication system comprises: a base station configured with the acquisition device of the fourth aspect.
  • a computer readable program wherein when the program is executed in a user device, the program causes a computer to perform the mixing as described in the first aspect in the user device Automatic retransmission feedback acquisition method.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform hybrid automatic retransmission feedback as described in the first aspect in a user equipment Get the method.
  • a computer readable program wherein when the program is executed in a base station, the program causes a computer to perform a hybrid automatic weighting as described in the third aspect in the base station The method of obtaining feedback.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform acquisition of hybrid automatic retransmission feedback as described in the third aspect in a base station method.
  • the beneficial effects of the embodiment of the present invention are that after the user equipment sends the uplink data on the serving cell of the unlicensed frequency band, even if the subframe that the base station needs to send the PHICH is occupied by other systems, the user equipment can ensure that the user equipment correctly performs uplink transmission.
  • FIG. 1 is a schematic diagram of uplink data transmission according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for acquiring HARQ feedback according to Embodiment 1 of the present invention
  • FIG. 3 is another schematic flowchart of a method for acquiring HARQ feedback according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic flowchart of a method for acquiring HARQ feedback according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic flowchart of a method for acquiring HARQ feedback according to Embodiment 3 of the present invention.
  • FIG. 6 is a schematic flowchart of a method for acquiring HARQ feedback according to Embodiment 4 of the present invention.
  • FIG. 7 is another schematic flowchart of a method for acquiring HARQ feedback according to Embodiment 4 of the present invention.
  • FIG. 8 is a schematic structural diagram of an apparatus for acquiring HARQ feedback according to Embodiment 5 of the present invention.
  • FIG. 9 is a schematic block diagram showing a system configuration of a user equipment according to Embodiment 5 of the present invention.
  • FIG. 10 is a schematic structural diagram of an apparatus for acquiring HARQ feedback according to Embodiment 6 of the present invention.
  • FIG. 11 is a schematic structural diagram of a base station according to Embodiment 6 of the present invention.
  • FIG. 12 is another schematic structural diagram of an apparatus for acquiring HARQ feedback according to Embodiment 8 of the present invention.
  • FIG. 13 is another schematic structural diagram of an apparatus for acquiring HARQ feedback according to Embodiment 8 of the present invention.
  • Figure 14 is a block diagram showing the configuration of a communication system according to a ninth embodiment of the present invention.
  • the present invention is mainly directed to a scenario in which a serving cell aggregates, that is, a base station configures a serving cell on a licensed frequency band as a primary serving cell for a user equipment, and configures a serving cell on zero, one or more licensed frequency bands as a secondary serving cell. At the same time, one or more serving cells on the unlicensed frequency band are configured as the secondary serving cell.
  • a serving cell aggregates that is, a base station configures a serving cell on a licensed frequency band as a primary serving cell for a user equipment, and configures a serving cell on zero, one or more licensed frequency bands as a secondary serving cell.
  • the invention is not limited thereto.
  • the secondary serving cell on the unlicensed frequency band has both uplink and downlink links, and may be in the same duplex mode as the primary serving cell, or may be in different duplex mode. In the case of the TDD mode at the same time, the secondary serving cell on the unlicensed band may also have a different TDD configuration than the primary serving cell.
  • the base station and the user equipment use the LBT mechanism on the serving cell in the unlicensed frequency band. That is, the base station firstly listens to whether the next downlink subframe channel is idle before transmitting the downlink signal (including data and control signaling) on each downlink subframe. . Only when the channel is idle, the base station will send downlink data in the next subframe.
  • the user equipment follows the same mechanism, that is, the user equipment first listens to whether the next uplink subframe channel is idle before transmitting the uplink signal (including data and control signaling) on each uplink subframe.
  • FIG. 1 is a schematic diagram of uplink data transmission according to an embodiment of the present invention. As shown in FIG. 1, the frame structure is DSUUUDDDDD.
  • the base station finds that the subframe channel is available through the LBT.
  • the base station sends a physical downlink control channel (PDCCH, Physical Downlink Control CHannel) in the subframe, and the scheduling user equipment sends a Physical Uplink Shared CHannel (PUSCH).
  • PDCCH Physical Downlink Control channel
  • PUSCH Physical Uplink Shared CHannel
  • n+4 transmits the PUSCH. It is assumed that the user equipment detects that the subframe n+4 channel is available after listening for a period of time, and transmits the PUSCH in the subframe n+4.
  • the base station needs to feed back the PUSCH through the PHICH in subframe n+8. ACK/NACK information of the data.
  • the base station detects that the n+8 subframe has been occupied by other systems. Therefore, the base station cannot transmit the PHICH on the subframe.
  • the HARQ is also defined according to, for example, the above reference.
  • the PHICH transmitted by the base station will be decoded in subframe n+8.
  • the base station does not send the PHICH in subframe n+8, based on the current mechanism, the user equipment cannot know in advance that the base station does not send the PHICH in subframe n+8, and therefore continues to decode at n+8 according to the normal procedure.
  • Feedback on PHICH In this case, the result of decoding by the user equipment is a NACK with a high probability.
  • the user equipment performs non-adaptive uplink retransmission on the n+2 subframe of the next frame according to the scheduling timing relationship.
  • the retransmission may not be necessary, or the user equipment to do non-adaptive retransmission is not the intention of the base station.
  • the subframe in which the base station needs to transmit the PHICH may be occupied by other systems, so that the user equipment cannot obtain the correct HARQ feedback information in the predetermined subframe.
  • the problem to be solved by the present invention is that, in the service cell of the unlicensed frequency band, if the subframe in which the base station needs to transmit the PHICH is occupied by other systems, how to ensure that the user equipment can correctly perform the next uplink transmission.
  • the present invention is not limited thereto, and the duplex mode of the serving cell on the unlicensed band and the TDD uplink and downlink configuration in the case where the duplex mode is the TDD mode may be determined according to actual conditions.
  • the embodiments of the present invention are described in detail below.
  • An embodiment of the present invention provides a method for acquiring HARQ feedback, which is applied to a user equipment side.
  • the obtaining method includes:
  • Step 201 The user equipment sends uplink data in an uplink subframe on the secondary serving cell of the unlicensed frequency band.
  • Step 202 When transmitting the uplink data, set a variable for recording a feedback state of the uplink data transmission to an ACK.
  • Step 203 Determine a downlink subframe corresponding to the uplink subframe, where the corresponding downlink subframe is based on a HARQ timing relationship defined in a subframe for transmitting uplink data and, for example, reference [TS36.213, v12.3.0] to make sure.
  • Step 204 Decode the PDCCH at the downlink subframe corresponding to the uplink subframe on the secondary serving cell of the unlicensed frequency band, without decoding the PHICH.
  • the variable used to record the feedback state of the uplink data transmission is set as an ACK, and then in the secondary serving cell of the unlicensed frequency band.
  • the corresponding downlink subframe only listens and decodes the PDCCH without decoding the PHICH, and judges the next transmission behavior according to the decoding situation, that is, whether new data transmission needs to be performed, or whether adaptive transmission of the last data transmission is performed, or Do not make any transmissions.
  • FIG. 3 is another schematic flowchart of a method for acquiring HARQ feedback according to an embodiment of the present invention. As shown in FIG. 3, the acquiring method includes:
  • Step 301 The user equipment sends uplink data in an uplink subframe of the secondary serving cell in the unlicensed frequency band.
  • Step 302 When the HARQ entity requests to send the uplink data, set a variable for recording a feedback state of the uplink data transmission to an ACK.
  • the HARQ entity of the user equipment requests uplink PUSCH transmission (for example, it may be a new data transmission or an adaptive retransmission)
  • the user equipment is used to record the uplink transmission.
  • the value of the feedback state variable ie HARQ_FEEDBACK in the current protocol
  • ACK is set to ACK.
  • Step 303 Listen and decode the PDCCH at the downlink subframe corresponding to the uplink subframe on the secondary serving cell of the unlicensed frequency band.
  • the corresponding downlink subframe is determined according to the subframe in which the uplink data is sent in step 701 and the HARQ timing relationship defined in, for example, the reference [TS36.213, v12.3.0].
  • the user equipment determines the received subframe of the downlink feedback corresponding to the uplink PUSCH transmission according to the HARQ timing relationship defined in the reference [TS36.213, v12.3.0]. In the subframe, the user equipment only decodes the PDCCH on the secondary serving cell of the unlicensed band, and does not decode the PHICH.
  • step 304 it is determined whether the uplink grant of the user equipment is scheduled. If the PDCCH is decoded to obtain the uplink grant of the user equipment, step 305 is performed; if the PDCCH is not decoded, the uplink grant of the user equipment is scheduled. In the case, step 306 is performed.
  • Step 305 Determine, according to the indication in the uplink authorization, transmission of uplink data.
  • the user equipment determines whether it needs to send new uplink data according to the indication in the uplink grant, or needs to send an adaptive retransmission of the uplink data sent by the last transmission.
  • Step 306 determining that no uplink data transmission is performed next; and keeping the value of the following variable unchanged: a variable for recording the number of uplink retransmissions, a variable for recording the uplink retransmission version number, and a variable for recording the feedback state of the uplink data transmission .
  • the user equipment if the uplink grant of the user equipment is not scheduled, the user equipment does not perform PUSCH transmission; at the same time, the user equipment maintains the following values:
  • variable that records the number of uplink retransmissions ie, CURRENT_TX_NB in the current protocol
  • a variable that records the feedback state of the upstream transmission ie, HARQ_FEEDBACK in the current protocol.
  • the user equipment after the user equipment sends the uplink data on the serving cell of the unlicensed frequency band, even if the subframe that the base station needs to send the PHICH is occupied by other systems on the secondary serving cell of the unlicensed frequency band of the user equipment, The user equipment is guaranteed to correctly receive the feedback of the base station, thereby performing the uplink data transmission desired by the base station.
  • the embodiment of the invention provides a method for acquiring HARQ feedback, which is applied to a base station side.
  • the obtaining method includes:
  • Step 401 The base station configures a secondary serving cell of the unlicensed frequency band for the user equipment, and configures an associated cell of the secondary serving cell for the user equipment, so that the user equipment sends the secondary serving cell in the unlicensed frequency band.
  • uplink data feedback information of uplink hybrid automatic retransmission is obtained on the associated cell.
  • the associated cell may be the scheduling cell of the secondary serving cell; or may be a certain serving cell on a certain licensed frequency band configured by the base station, or may be fixed as the primary serving cell.
  • the user equipment sends uplink data on the secondary serving cell of the unlicensed frequency band, and receives the PHICH on the associated cell of the secondary serving cell, so that the feedback information of the uplink HARQ can be correctly obtained.
  • the embodiment of the present invention is based on the embodiment 2, and the scheduling cell is taken as an example for description.
  • FIG. 5 is another schematic flowchart of a method for acquiring HARQ feedback according to an embodiment of the present invention. As shown in FIG. 5, the method includes:
  • Step 501 The base station configures a secondary serving cell of the unlicensed frequency band for the user equipment, and the base station configures, for the user equipment, the scheduling cell of the secondary serving cell of the unlicensed frequency band;
  • Step 502 The base station schedules the user equipment to send uplink data on the secondary serving cell of the unlicensed frequency band.
  • the scheduling information may be sent to the user equipment by scheduling the PDCCH on the cell, or may be sent to the user equipment by using the PDCCH on the secondary serving cell in the unlicensed frequency band.
  • Step 503 The user equipment sends uplink data on a secondary serving cell in an unlicensed frequency band.
  • Step 504 The base station sends a PHICH on a scheduling cell of a secondary serving cell in an unlicensed frequency band.
  • Step 505 The user equipment receives the PHICH on the scheduling cell, and obtains feedback information of the uplink HARQ.
  • the scheduling cell corresponding to the serving cell is configured for the user equipment, that is, the secondary service on the unlicensed frequency band.
  • the cell is fixedly configured for cross-carrier scheduling.
  • the scheduling cell may be a primary serving cell or a secondary serving cell on a licensed frequency band.
  • the cross-carrier scheduling configuration is no longer optional, and the appearance condition becomes that when the base station configures a carrier on the unlicensed frequency band for the user equipment as the secondary serving cell of the user equipment.
  • the cross-carrier scheduling is mandatory; and when the base station performs other configurations for the secondary serving cell on the unlicensed frequency band of the user equipment, the cross-carrier scheduling configuration is not required.
  • the user equipment only sends the PUSCH on the uplink resource of the secondary serving cell in the unlicensed frequency band, and the PDCCH that schedules the PUSCH and the PHICH that feeds back the ACK/NACK information of the data transmitted on the PUSCH are all in the
  • the base station receives on the downlink resource of the scheduling cell of the secondary serving cell configured by the base station.
  • the user equipment receives the PDCCH on the downlink resource of the secondary serving cell of the unlicensed frequency band and transmits the PDCCH scheduled PUSCH on the uplink resource; and the PHICH that feeds back the ACK/NACK information of the data transmitted on the PUSCH will be The configured downlink resource of the scheduling cell of the secondary serving cell is received.
  • the SCell 1 when the base station configures the secondary serving cell SCell 1 of the unlicensed band for the user equipment UE1, the SCell 1 is configured as cross-carrier scheduling, and the scheduling cell of the SCell 1 is configured as a primary serving cell on the licensed frequency band, that is, the PCell.
  • UE1 will listen on the PCell for the PDCCH corresponding to SCell1. If the PDCCH schedules the PUSCH transmission of the UE1 on the SCell1, the UE1 will receive the corresponding PHICH on the PCell after transmitting the PUSCH carrying the data on the SCell1. Alternatively, UE1 will listen to the PDCCH on SCell1. If the PDCCH schedules the PUSCH transmission of the UE1 on the SCell1, the UE1 will receive the corresponding PHICH on the PCell after transmitting the PUSCH carrying the data on the SCell1.
  • the user equipment after the user equipment sends uplink data on the secondary serving cell in the unlicensed frequency band, even if On the secondary serving cell of the unlicensed frequency band of the user equipment, the subframe that the base station needs to send the PHICH is occupied by other systems, and the user equipment can correctly receive the feedback of the base station, thereby performing the uplink data transmission desired by the base station.
  • the embodiment of the present invention is based on the embodiment 2, and the serving cell in the licensed frequency band is taken as an example for description.
  • FIG. 6 is another schematic flowchart of a method for acquiring HARQ feedback according to an embodiment of the present invention, showing a situation on a base station side. As shown in FIG. 6, the obtaining method includes:
  • Step 601 The base station receives uplink data sent by the user equipment in an uplink subframe of the secondary serving cell in the unlicensed frequency band.
  • the user equipment is configured with an associated cell; wherein the associated cell is a serving cell of the licensed frequency band.
  • the associated cell of the secondary serving cell of the unlicensed band of the user equipment may be predefined.
  • it may be a primary serving cell of the user equipment; or the base station may be configured for the user equipment by using dedicated signaling, for example, it may be a serving cell on any licensed frequency band of the user equipment. If it is the latter, the base station configures the secondary cell corresponding to the secondary serving cell at the same time when configuring the secondary serving cell on the unlicensed frequency band for the user equipment.
  • Step 602 The base station determines whether a downlink subframe corresponding to the uplink subframe on the secondary serving cell of the unlicensed frequency band is available.
  • the base station determines whether the downlink subframe in the unlicensed frequency band has an uplink subframe corresponding to the HARQ timing relationship defined in, for example, the reference [TS36.213, v12.3.0], in the uplink subframe in step 601. . If step 603 is available, step 604 is performed if not available.
  • Step 603 The base station sends the hybrid automatic retransmission feedback of the uplink data transmission in the downlink subframe corresponding to the uplink subframe on the secondary serving cell of the unlicensed frequency band.
  • the base station sends in the downlink subframe of the unlicensed frequency band that the uplink subframe in step 601 has a HARQ timing relationship that meets the HARQ timing relationship defined in, for example, the reference [TS36.213, v12.3.0].
  • the hybrid automatic retransmission feedback of the uplink data transmission is not limited to, the reference [TS36.213, v12.3.0].
  • Step 604 The base station sends the indication information by using the PDCCH in the downlink subframe corresponding to the uplink subframe on the associated cell of the secondary serving cell of the unlicensed frequency band.
  • the base station has a downlink in accordance with the HARQ timing relationship defined in reference [TS36.213, v12.3.0] on the associated cell of the secondary serving cell of the unlicensed band and the uplink subframe in step 601.
  • An indication information is sent through the PDCCH in the subframe.
  • the indication information is: indicating that the user equipment needs to comply with the uplink subframe in step 601 on the associated cell of the secondary serving cell in the unlicensed frequency band configured by the base station for the user equipment, for example, reference [TS36.213, v12. In the downlink subframe of the HARQ timing relationship defined in 3.0], the hybrid automatic retransmission feedback information for the uplink data transmission in step 601 transmitted on the PHICH is received.
  • the PDCCH that sends the indication information may be scrambled by a public radio network temporary identifier (Radio Network Temportary Indentifier), for example, a RNTI may be newly defined to scramble the PDCCH for transmitting the indication information; or The PDCCH may be scrambled by a C-RNTI to transmit the indication information by a C-RNTI.
  • a public radio network temporary identifier Radio Network Temportary Indentifier
  • the indication information may be transmitted through a newly defined Downlink Control Information (DCI) format, or may be transmitted through a currently existing downlink control information format.
  • DCI Downlink Control Information
  • the indication information may share the same downlink control information format with other control information, or may use a downlink control information format separately.
  • the content of the indication information may include, for example, a secondary serving cell index number (SCellIndex); or a physical cell identifier (Physical Cell Identifier).
  • SCellIndex secondary serving cell index number
  • Physical Cell Identifier Physical Cell Identifier
  • the indication information is only one bit.
  • the indication information indicates that the user equipment needs to receive the PHICH transmission in the downlink subframe corresponding to the uplink subframe on the associated cell of the secondary serving cell of the unlicensed frequency band configured by the base station for the user equipment.
  • the feedback information is automatically retransmitted for the hybrid of the uplink data.
  • the invention is not limited to the above.
  • FIG. 7 is another schematic flowchart of a method for acquiring HARQ feedback according to an embodiment of the present invention.
  • Fig. 7 shows the case of the user equipment side.
  • the obtaining method includes:
  • Step 701 The user equipment sends uplink data in an uplink subframe on the secondary serving cell of the unlicensed frequency band.
  • Step 702 The user equipment receives the indication information in a downlink subframe corresponding to the uplink subframe on the associated cell of the secondary serving cell of the unlicensed frequency band.
  • the indication information passes through a PDCCH (for example, here) Called PDCCH1) transmission.
  • the user equipment listens on the associated cell of the secondary serving cell of the unlicensed band and decodes the uplink subframe in step 701 with a HARQ timing relationship as defined in, for example, the reference [TS36.213, v12.3.0].
  • PDCCH1 transmitted on the downlink subframe.
  • the determining method of the associated cell of the secondary serving cell in the unlicensed frequency band is as follows: if the associated cell of the secondary serving cell in the unlicensed frequency band is fixed as the primary serving cell of the user equipment, determining the The associated cell of the secondary serving cell of the unlicensed frequency band is the primary serving cell of the user equipment; and when the associated cell of the secondary serving cell of the licensed frequency band is configured by the base station by using dedicated signaling, the receiving base station sends the dedicated And signaling, and determining that the associated cell of the secondary serving cell in the unlicensed frequency band is a serving cell specified in the dedicated signaling.
  • the user equipment transmits the PUSCH carrying the data on the secondary serving cell of an unlicensed frequency band
  • the user equipment will follow, for example, the reference [TS36.213, v12.3.0].
  • the defined HARQ timing relationship determines a downlink subframe that needs to receive the PHICH corresponding to the PUSCH transmission.
  • the user equipment then monitors PDCCH1 at the downlink subframe location on the associated cell of the secondary serving cell of the unlicensed band.
  • Step 703 The user equipment determines whether the indication information transmitted on the PDCCH1 can be successfully received. If the indication information can be received, step 704 is performed, and if the indication information is not received, the step is performed. 705.
  • the user equipment decodes PDCCH1 to obtain an indication that the user equipment needs to be in the associated cell of the secondary serving cell in the unlicensed frequency band and the uplink subframe in step 701 has the reference [TS36.213,
  • the downlink automatic subframe of the HARQ timing relationship defined in v12.3.0] receives the hybrid automatic retransmission feedback information for the uplink data transmission in the step 701 transmitted on the PHICH, and then the user equipment will be in the serving cell of the unlicensed frequency band.
  • the PDCCH 1 that sends the indication information may be scrambled by a public radio network temporary identifier (Radio Network Temportary Indentifier), for example, a RNTI may be newly defined to scramble the PDCCH 1 for transmitting the indication information; or A user equipment-specific radio network temporary identifier is used for scrambling, for example, PDCCH1 that transmits the indication information may be scrambled by C-RNTI.
  • a public radio network temporary identifier Radio Network Temportary Indentifier
  • the indication information may be transmitted through a newly defined Downlink Control Information (DCI) format, or may be transmitted through a currently existing downlink control information format.
  • DCI Downlink Control Information
  • the indication information may share the same downlink control information format with other control information, or may use a downlink control information format separately.
  • the content of the indication information may include, for example, a secondary serving cell index number (SCellIndex); or a physical cell identifier (Physical Cell Identifier).
  • SCellIndex secondary serving cell index number
  • Physical Cell Identifier Physical Cell Identifier
  • the indication information is only one bit.
  • the indication information indicates that the user equipment needs to receive the PHICH transmission in the downlink subframe corresponding to the uplink subframe on the associated cell of the secondary serving cell of the unlicensed frequency band configured by the base station for the user equipment.
  • the feedback information is automatically retransmitted for the hybrid of the uplink data.
  • the invention is not limited to the above.
  • Step 704 The user equipment simultaneously decodes the corresponding PHICH and PDCCH2 on the associated cell of the secondary serving cell in the unlicensed band.
  • Step 705 The user equipment decodes the PDCCH and the PHICH on the secondary serving cell of the unlicensed band.
  • the user equipment will normally match the uplink subframe in the unlicensed frequency band with the uplink subframe in step 401, for example, reference [TS36.213]
  • the corresponding downlink subframe position of the HARQ timing relationship defined in v12.3.0] decodes the PDCCH and the PHICH.
  • the subframe that the base station needs to send the PHICH is occupied by other systems. It is also ensured that the user equipment correctly receives the feedback of the base station, thereby performing the uplink data transmission desired by the base station.
  • An embodiment of the present invention provides an apparatus for acquiring an uplink hybrid automatic retransmission feedback, which is configured in a user equipment. This embodiment corresponds to Embodiment 1, and the same content is not described again.
  • FIG. 8 is a schematic structural diagram of an apparatus for acquiring HARQ feedback according to an embodiment of the present invention, as shown in FIG.
  • the obtaining device 800 includes:
  • the data sending unit 801 sends uplink data in an uplink subframe on the secondary serving cell of the unlicensed band.
  • the recording unit 802 sets a variable for recording the feedback state of the uplink data transmission to ACK when the hybrid automatic repeating entity requests to transmit the uplink data.
  • the subframe determining unit 803 determines a downlink subframe corresponding to the uplink subframe in which the data is transmitted in the data transmitting unit 801.
  • the downlink subframe is a downlink subframe that has an HARQ timing relationship that is consistent with, for example, the reference [TS36.213, v12.3.0] in the uplink subframe in the data transmitting unit 801.
  • the decoding unit 804 when the uplink data is sent in the uplink subframe on the secondary serving cell of the unlicensed frequency band, on the secondary serving cell of the unlicensed frequency band, the downlink subframe corresponding to the uplink subframe
  • the PDCCH is monitored and decoded without decoding the PHICH.
  • the user equipment may determine, according to the information in the decoded PDCCH, whether the next transmission behavior needs to be performed, whether to perform new data transmission, or to perform adaptive retransmission of the last data transmission, or not to perform any uplink data. transmission.
  • the obtaining apparatus 800 may further include:
  • the transmission determining unit 805 when decoding the PDCCH to obtain an uplink grant for scheduling the user equipment, determining, according to the indication in the uplink grant, transmission of uplink data; if the uplink grant is not obtained, determining the next No upstream data transmission is performed.
  • the recording unit 802 may be further configured to: keep the value of the following variable unchanged when determining that the uplink data transmission is not performed: recording a variable of the number of uplink retransmissions, recording a variable of the uplink retransmission version number, and recording the record A variable that describes the feedback state of the upstream data transmission.
  • the embodiment of the present invention further provides a user equipment, which is configured with the above-mentioned HARQ feedback obtaining apparatus 800.
  • FIG. 9 is a schematic block diagram showing the system configuration of the user equipment 900 according to an embodiment of the present invention.
  • the user device 900 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 acquisition device 900 can be integrated into the central processor 100.
  • the central processing unit 100 may be configured to implement an uplink hybrid automatic retransmission feedback acquisition method as described in Embodiment 1.
  • the acquisition device 800 can be configured separately from the central processing unit 100.
  • the acquisition device 800 can be configured as a chip connected to the central processing unit 100, and the function of the acquisition device 800 can be implemented by control of the central processing unit.
  • the user equipment 900 may further include: a communication module 110, an input unit 120, an audio processing unit 130, a display 160, and a power source 170. It should be noted that the user equipment 900 does not have to include all the components shown in FIG. 9; in addition, the user equipment 900 may further include components not shown in FIG. 9, 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 various aspects of user device 900. 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. Information related to failures can be stored, and programs for performing related information can be stored. And the central processing unit 100 can execute the program stored by 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 900 may be implemented by special purpose hardware, firmware, software, or a combination thereof without departing from the scope of the invention.
  • the subframe that the base station needs to send the PHICH is occupied by other systems. It is also ensured that the user equipment correctly receives the feedback of the base station, thereby performing the uplink data transmission desired by the base station.
  • An embodiment of the present invention provides an apparatus for acquiring HARQ feedback. This embodiment corresponds to Embodiment 2, and the same content will not be described again.
  • FIG. 10 is a schematic structural diagram of an apparatus for acquiring HARQ feedback according to an embodiment of the present invention, configured in a base station. As shown in FIG. 10, the obtaining apparatus 1000 includes:
  • the configuration unit 1001 is configured to configure a secondary serving cell of the unlicensed frequency band for the user equipment, and configure an associated cell of the secondary serving cell for the user equipment, so that the user equipment sends the secondary serving cell in the unlicensed frequency band.
  • a feedback signal for uplink hybrid automatic retransmission is obtained on the associated cell. interest.
  • the embodiment further provides a base station, which is configured with the HARQ feedback obtaining apparatus 1000 as described above.
  • FIG. 11 is a schematic diagram of a structure of a base station according to an embodiment of the present invention.
  • base station 1100 can include a central processing unit (CPU) 200 and memory 210; and memory 210 is 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 the request information to the user equipment.
  • the central processing unit 200 can be configured to implement the functions of the apparatus 1000 for HARQ feedback.
  • the base station 1100 may further include: a transceiver 220, an antenna 230, and the like; wherein the functions of the foregoing components are similar to those of the prior art, and details are not described herein again. It should be noted that the base station 1100 does not have to include all the components shown in FIG. 11; in addition, the base station 1100 may further include components not shown in FIG. 11, and reference may be made to the prior art.
  • the subframe that the base station needs to send the PHICH is occupied by other systems. It is also ensured that the user equipment correctly receives the feedback of the base station, thereby performing the uplink data transmission desired by the base station.
  • An embodiment of the present invention provides an apparatus for acquiring HARQ feedback. This embodiment corresponds to Embodiment 3, and the same content is not described again.
  • the associated cell is a scheduling cell of a secondary serving cell of the unlicensed frequency band.
  • the configuration of the apparatus for acquiring the HARQ feedback may be as shown in FIG. 10, where the configuration unit 1001 is specifically configured to: when the secondary serving cell of the unlicensed frequency band is configured for the user equipment, configure the The scheduling cell of the secondary serving cell.
  • the scheduling cell corresponding to the serving cell is configured for the user equipment, that is, the secondary service on the unlicensed frequency band.
  • the cell is fixedly configured for cross-carrier scheduling.
  • the scheduling cell may be a primary serving cell or a secondary serving cell on a licensed frequency band.
  • the cross-carrier scheduling configuration is no longer optional, and its occurrence condition
  • the base station configures a carrier on the unlicensed frequency band as the secondary serving cell of the user equipment
  • the cross-carrier scheduling must be configured; and the base station is the secondary service on the unlicensed frequency band of the user equipment.
  • Cross-carrier scheduling configuration is not required when the cell is configured for other purposes.
  • the embodiment further provides a base station, which is configured with the HARQ feedback obtaining apparatus 1000 as described above.
  • the central processing unit 200 can be configured to implement the functions of the configuration unit 1001 of the present embodiment.
  • a schematic diagram of a configuration of a base station according to an embodiment of the present invention may be as shown in FIG.
  • the subframe that the base station needs to send the PHICH is occupied by other systems. It is also ensured that the user equipment correctly receives the feedback of the base station, thereby performing the uplink data transmission desired by the base station.
  • An embodiment of the present invention provides an apparatus for acquiring HARQ feedback. This embodiment corresponds to Embodiment 4, and the same content is not described again.
  • the associated cell is a serving cell of a licensed frequency band.
  • the serving cell of the licensed frequency band is the primary serving cell of the user equipment; or when the secondary serving cell of the unlicensed frequency band is configured for the user equipment by using dedicated signaling, the serving cell of the licensed frequency band is simultaneously Is configured.
  • FIG. 12 is a schematic diagram of a configuration of an apparatus for acquiring HARQ feedback according to an embodiment of the present invention.
  • the apparatus for acquiring HARQ feedback is configured in a base station.
  • the acquisition device 1200 includes the configuration unit 1001 as described above;
  • the obtaining apparatus 1200 may further include:
  • the data receiving unit 1201 receives the uplink data sent by the user equipment in an uplink subframe on the secondary serving cell of the unlicensed frequency band;
  • the subframe determining unit 1202 after receiving the uplink data sent by the user equipment in the uplink subframe on the secondary serving cell of the unlicensed frequency band, determining, on the secondary serving cell of the unlicensed frequency band, the uplink Whether the corresponding downlink subframe of the subframe is available;
  • the downlink subframe is a downlink subframe that has an HARQ timing relationship that is consistent with, for example, the reference [TS36.213, v12.3.0], with the uplink subframe in the data receiving unit 1201.
  • the indication information is generated when the downlink subframe is unavailable.
  • the function of the indication information is that the user equipment needs to receive the hybrid of the uplink data transmission in the data receiving unit 1201 transmitted on the PHICH in the corresponding downlink subframe on the associated cell of the secondary serving cell of the unlicensed frequency band. Automatically retransmit feedback information.
  • the indication information may be transmitted through a newly defined Downlink Control Information (DCI) format, or may be transmitted through a currently existing downlink control information format.
  • DCI Downlink Control Information
  • the indication information may share the same downlink control information format with other control information, or may use a downlink control information format separately.
  • the content of the indication information may include, for example, a secondary serving cell index number (SCellIndex); or a physical cell identifier (Physical Cell Identifier).
  • SCellIndex secondary serving cell index number
  • Physical Cell Identifier Physical Cell Identifier
  • the indication information is only one bit.
  • the indication information indicates that the user equipment needs to receive the PHICH transmission in the downlink subframe corresponding to the uplink subframe on the associated cell of the secondary serving cell of the unlicensed frequency band configured by the base station for the user equipment.
  • the feedback information is automatically retransmitted for the hybrid of the uplink data.
  • the invention is not limited to the above.
  • the information transmitting unit 1204 transmits the indication information in the PDCCH in the downlink subframe corresponding to the uplink subframe on the associated cell of the secondary serving cell of the unlicensed band configured in the configuration unit 1001.
  • the PDCCH that sends the indication information may be scrambled by a public radio network temporary identifier (Radio Network Temportary Indentifier), for example, a RNTI may be newly defined to scramble the PDCCH for transmitting the indication information; or The PDCCH may be scrambled by a C-RNTI to transmit the indication information by a C-RNTI.
  • a public radio network temporary identifier Radio Network Temportary Indentifier
  • the embodiment further provides a base station, which is configured with the HARQ feedback obtaining apparatus 1200 as described above.
  • a schematic diagram of a configuration of a base station according to an embodiment of the present invention may be as shown in FIG.
  • FIG. 13 is a schematic diagram of another configuration of an apparatus for acquiring HARQ feedback according to an embodiment of the present invention.
  • the apparatus for acquiring HARQ feedback is configured in a user equipment.
  • the obtaining apparatus 1300 includes:
  • the data sending unit 1301 sends the uplink number in an uplink subframe on the secondary serving cell of the unlicensed frequency band. according to;
  • the subframe determining unit 1302 determines a downlink subframe corresponding to the uplink subframe in which the data is transmitted in the data transmitting unit 1301.
  • the downlink subframe is a downlink subframe that has an HARQ timing relationship that is consistent with, for example, the reference [TS36.213, v12.3.0], with the uplink subframe in the data transmitting unit 1101.
  • the information receiving unit 1303 monitors the PDCCH at a downlink subframe on the associated cell.
  • the associated cell may be fixed as a primary serving cell of the user equipment, or may be a serving cell of a licensed frequency band configured by receiving dedicated signaling sent by the base station.
  • the downlink subframe is a downlink subframe determined in the subframe determining unit 1302.
  • the PDCCH may be scrambled by a public radio network temporary identifier (Radio Network Temportary Indentifier).
  • a RNTI may be newly defined to scramble the PDCCH for transmitting the indication information, or may be dedicated to a user equipment.
  • the radio network temporary identifier is scrambled, for example, the PDCCH transmitting the indication information may be scrambled by the C-RNTI.
  • the decoding unit 1304 when receiving the PDCCH and decoding, and obtaining an indication information from the PDCCH, simultaneously decoding the PHICH and the PDCCH at the downlink subframe on the associated cell of the secondary serving cell of the unlicensed band And if the indication information is not obtained, decoding the PDCCH and the PHICH at the downlink subframe on the secondary serving cell of the unlicensed band.
  • the function of the indication information is to indicate that the user equipment needs to receive the hybrid of the uplink data transmission in the data sending unit 1301 transmitted on the PHICH in the corresponding downlink subframe on the associated cell of the secondary serving cell of the unlicensed frequency band. Automatically retransmit feedback information.
  • the indication information may be transmitted through a newly defined downlink control information format, or may be transmitted through a currently existing downlink control information format.
  • the indication information may share the same downlink control information format with other control information, or may use a downlink control information format separately.
  • the content of the indication information may include, for example, a secondary serving cell index number (SCellIndex); or a physical cell identifier (Physical Cell Identifier).
  • SCellIndex secondary serving cell index number
  • Physical Cell Identifier Physical Cell Identifier
  • the indication information is only one bit.
  • the indication information indicates that the user equipment needs Receiving hybrid automatic retransmission feedback information for the uplink data transmitted on the PHICH in a downlink subframe corresponding to the uplink subframe on an associated cell of the secondary serving cell of the unlicensed frequency band configured by the base station for the user equipment .
  • the invention is not limited to the above.
  • the obtaining apparatus 1300 may further include:
  • the associated cell determining unit 1305 determines that the associated cell of the secondary serving cell of the unlicensed band is the user, if the associated cell of the secondary serving cell of the unlicensed band is fixed as the primary serving cell of the user equipment. a primary serving cell of the device; if the associated cell of the secondary serving cell in the licensed frequency band is configured by the base station by using dedicated signaling, receiving the dedicated signaling sent by the base station, and determining the secondary serving cell of the unlicensed frequency band The associated cell is the serving cell specified in the dedicated signaling.
  • the embodiment further provides a user equipment, which is configured with the HARQ feedback obtaining apparatus 1300 as described above.
  • a schematic diagram of a configuration of a base station according to an embodiment of the present invention may be as shown in FIG. 9.
  • the base station when the base station cannot use the downlink channel on the secondary serving cell of the unlicensed frequency band, the base station transmits the PDCCH on the serving cell of the licensed frequency band.
  • the user equipment is configured with the serving cell of the licensed band.
  • the user equipment after the user equipment sends the uplink data on the serving cell of the unlicensed frequency band, even if the subframe that the base station needs to send the PHICH is occupied by other systems on the secondary serving cell of the unlicensed frequency band of the user equipment, The user equipment is guaranteed to correctly receive the feedback of the base station, thereby performing the uplink data transmission desired by the base station.
  • FIG. 14 is a schematic diagram of a configuration of a communication system according to an embodiment of the present invention.
  • the communication system 1400 includes a base station 1401 and a user equipment 1402.
  • the base station 1401 is configured with the HARQ feedback acquisition device 1000 as described in Embodiments 6 and 7, or the HARQ feedback acquisition device 1200 described in Embodiment 8.
  • the base station 1401 can perform the acquisition method of the HARQ feedback as described in Embodiments 2 to 4.
  • the user equipment 1402 is configured with the HARQ feedback acquisition apparatus 800 as described in Embodiment 5; the user equipment 1402 may perform the HARQ feedback acquisition method as described in Embodiment 1.
  • the user equipment 1402 is configured with the HARQ feedback acquisition apparatus 1300 as described in Embodiment 8, and the user equipment 1402 can perform the HARQ feedback acquisition method as described in Embodiment 4.
  • 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 perform the method for acquiring HARQ feedback according to Embodiments 2 to 4 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 a computer to perform the method for obtaining HARQ feedback according to Embodiments 2 to 4 in a base station.
  • 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 execute the method for acquiring HARQ feedback described in Embodiment 1 in the user equipment.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute the method for obtaining HARQ feedback described in Embodiment 1 in a user equipment.
  • the above apparatus and method of the present invention may be implemented by hardware or 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.

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Abstract

本发明实施例提供一种混合自动重传反馈的获取方法、装置以及通信系统。该获取方法包括：在非授权频段的次服务小区上的某一上行子帧中发送上行数据；在发送所述上行数据时将用于记录所述上行数据传输的反馈状态的变量设为ACK；确定与所述上行子帧所对应的下行子帧；以及在所述非授权频段的次服务小区上与所述上行子帧相应的下行子帧中解码PDCCH，而不解码PHICH。通过本发明实施例，用户设备在非授权频段的服务小区上发送上行数据之后，即使基站需要发送PHICH的子帧被其他系统占用，也能保证用户设备正确地进行上行传输。

Description

混合自动重传反馈的获取方法、装置以及通信系统 技术领域
本发明涉及一种通信技术领域，特别涉及一种混合自动重传反馈的获取方法、装置以及通信系统。
背景技术
为了满足未来业务对带宽的需求，在长期演进(LTE，Long Term Evolution)系统中利用非授权频段进行通信已经成为一个热点问题。非授权频段上的服务小区可以做为一个独立的服务小区配置给用户设备(UE，User Equipment)供用户设备通信，也可以利用LTE系统中的载波聚合方法或者双连接方法将非授权频段上的服务小区做为一个次服务小区配置给用户设备，而主服务小区是授权频段上的服务小区。主服务小区的工作方式可以是频分双工(FDD，Frequency Division Duplex)模式也可以是时分双工(TDD，Time Division Duplex)模式；同样非授权频段上的次服务小区也可以选择是FDD模式后者TDD模式中的一种，而且可以是只有下行链路或者可以上下行链路同时存在。
由于目前已经有系统在利用非授权频段上的服务小区进行通信，例如，无线局域网(WLAN，Wireless Local Area Network)系统。因此，LTE系统的加入必须要保证LTE系统和其它系统以及不同的LTE运营商的系统之间能够公平的去利用非授权频段。为了实现这一点，LBT(listen-before-talk)是一个主要的方向。而LBT的具体实现方式可以有多种。LBT的基本思想是在占用非授权频段上的信道发送信号之前，发送端必须首先侦听一段时间。只有在侦听的这段时间内所述信道处于一直空闲的情况下，发送端才能在所述信道上发送信号。如果在侦听的时间段内发现信道忙碌，一般情况下发送端需要自动退避一段时间后再去侦听信道是否可用。
应该注意，上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
但是，发明人发现：用户设备在非授权频段的服务小区上发送上行数据之后，根据混合自动重传请求(HARQ，Hybrid Automatic Repeat reQuest)时序关系，需要在一段时间后获取基站通过物理HARQ指示信道(PHICH，Physical HARQ Indicator CHannel)发送的HARQ反馈信息。
不过在非授权频段的服务小区上，基站需要发送PHICH的子帧有可能被其他系统占用，从而导致用户设备在预定的子帧不能获得正确的HARQ反馈信息。
本发明实施例提供一种上行混合自动重传反馈的获取方法、装置以及通信系统。在非授权频段的服务小区上，使用户设备获得正确的HARQ反馈信息。
根据本发明实施例的第一个方面，提供一种混合自动重传反馈的获取方法，应用于用户设备，所述获取方法包括：
在非授权频段的次服务小区上的某一上行子帧中发送上行数据；
在发送所述上行数据时，将用于记录所述上行数据传输的反馈状态的变量设为ACK；
确定与所述上行子帧相应的下行子帧；
在所述非授权频段的次服务小区上与所述上行子帧相应的下行子帧中解码物理下行控制信道，而不解码物理混合自动重传请求指示信道。
根据本发明实施例的第二个方面，提供一种混合自动重传反馈的获取装置，配置于用户设备中，所述获取装置包括：
数据发送单元，在非授权频段的次服务小区上的某一上行子帧中发送上行数据；
记录单元，在发送所述上行数据时，将用于记录所述上行数据传输的反馈状态的变量设为ACK；
子帧确定单元，确定与所述上行子帧相应的下行子帧；
解码单元，在所述非授权频段的次服务小区上与所述上行子帧相应的下行子帧中解码物理下行控制信道，而不解码物理混合自动重传请求指示信道。
根据本发明实施例的第三个方面，提供一种混合自动重传反馈的获取方法，应用于基站，所述获取方法包括：
为用户设备配置非授权频段的次服务小区，以及为所述用户设备配置所述次服务小区的相关联小区；使得所述用户设备在所述非授权频段的次服务小区上发送上行数据的情况下，在所述相关联小区上获得上行混合自动重传的反馈信息。
根据本发明实施例的第四个方面，提供一种混合自动重传反馈的获取装置，配置于基站中，所述获取装置包括：
配置单元，为用户设备配置非授权频段的次服务小区，以及为所述用户设备配置所述次服务小区的相关联小区；使得所述用户设备在所述非授权频段的次服务小区上发送上行数据的情况下，在所述相关联小区上获得上行混合自动重传的反馈信息。
根据本发明实施例的第五个方面，提供一种通信系统，所述通信系统包括：配置有如第二个方面所述的获取装置的用户设备；
或者，所述通信系统包括：配置有如第四个方面所述的获取装置的基站。
根据本发明实施例的又一个方面，提供一种计算机可读程序，其中当在用户设备中执行所述程序时，所述程序使得计算机在所述用户设备中执行如第一方面所述的混合自动重传反馈的获取方法。
根据本发明实施例的又一个方面，提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在用户设备中执行如第一方面所述的混合自动重传反馈的获取方法。
根据本发明实施例的又一个方面，提供一种计算机可读程序，其中当在基站中执行所述程序时，所述程序使得计算机在所述基站中执行如第三方面所述的混合自动重传反馈的获取方法。
根据本发明实施例的又一个方面，提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在基站中执行如第三方面所述的混合自动重传反馈的获取方法。
本发明实施例的有益效果在于，用户设备在非授权频段的服务小区上发送上行数据之后，即使基站需要发送PHICH的子帧被其他系统占用，也能保证用户设备正确地进行上行传输。
参照后文的说明和附图，详细公开了本发明的特定实施方式，指明了本发明的原理可以被采用的方式。应该理解，本发明的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
参照以下的附图可以更好地理解本发明的很多方面。附图中的部件不是成比例绘制的，而只是为了示出本发明的原理。为了便于示出和描述本发明的一些部分，附图中对应部分可能被放大或缩小。
在本发明的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
图1是本发明实施例的上行数据发送的一示意图；
图2是本发明实施例1的HARQ反馈的获取方法的一流程示意图；
图3是本发明实施例1的HARQ反馈的获取方法的另一流程示意图；
图4是本发明实施例2的HARQ反馈的获取方法的一流程示意图；
图5是本发明实施例3的HARQ反馈的获取方法的一流程示意图；
图6是本发明实施例4的HARQ反馈的获取方法的一流程示意图；
图7是本发明实施例4的HARQ反馈的获取方法的另一流程示意图；
图8是本发明实施例5的HARQ反馈的获取装置的一构成示意图；
图9是本发明实施例5的用户设备的系统构成的一示意框图；
图10是本发明实施例6的HARQ反馈的获取装置的一构成示意图；
图11是本发明实施例6的基站的一构成示意图；
图12是本发明实施例8的HARQ反馈的获取装置的另一构成示意图；
图13是本发明实施例8的HARQ反馈的获取装置的另一构成示意图；
图14是本发明实施例9的通信系统的一构成示意图。
具体实施方式
参照附图，通过下面的说明书，本发明的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本发明的特定实施方式，其表明了其中可以采用本发明的原则的部分实施方式，应了解的是，本发明不限于所描述的实施方式，相反，本发明包 括落入所附权利要求的范围内的全部修改、变型以及等同物。
本发明主要针对服务小区聚合这种场景，即基站给用户设备配置一个授权频段上的服务小区做为主服务小区，配置零个、一个或者多个授权频段上的服务小区做为次服务小区，同时配置非授权频段上的一个或者多个服务小区做为次服务小区。但本发明不限于此。
非授权频段上的次服务小区同时具有上下行链路，且可以与主服务小区是相同的双工模式，也可以是不同的双工模式。在同时为TDD模式的情况下，非授权频段上的次服务小区还可以与主服务小区具有不同的TDD配置。
基站和用户设备在非授权频段的服务小区上都采用LBT机制，即基站在每个下行子帧上发送下行信号(包括数据和控制信令)前首先侦听接下来的下行子帧信道是否空闲。只有在信道空闲的情况下，基站才会在接下来的子帧去发送下行数据。用户设备遵循同样的机制，即用户设备在每个上行子帧上发送上行信号(包括数据和控制信令)前首先侦听接下来的上行子帧信道是否空闲。
为了便于说明问题，下面通过一种具体的场景来解释本发明要解决的问题。
假设基站为用户设备配置的非授权频段的次服务小区为TDD模式，且TDD的配置为Configuration 3。图1是本发明实施例的上行数据发送的一示意图，如图1所示，其帧结构为DSUUUDDDDD。
如图1所示，在子帧n，基站通过LBT发现该子帧信道可用。基站在该子帧发送一个物理下行控制信道(PDCCH，Physical Downlink Control CHannel)，调度用户设备发送物理上行共享信道(PUSCH，Physical Uplink Shared CHannel)。
用户设备在解码得到上述PDCCH后，根据例如参考文献[TS36.213，Evolved Universal Terrestrial Radio Access(E-UTRA)；Physical layer procedures，v12.3.0]中定义的调度时序关系，用户设备需要在子帧n+4发送PUSCH。假设用户设备侦听一段时间后判断子帧n+4信道可用，在子帧n+4发送PUSCH。
接下来根据例如参考文献[TS36.213，Evolved Universal Terrestrial Radio Access(E-UTRA)；Physical layer procedures，v12.3.0]中定义的HARQ时序关系，基站需要在子帧n+8通过PHICH反馈上述PUSCH数据的ACK/NACK信息。但是基站通过侦听发现n+8子帧已经被其他系统占用。因此基站无法在该子帧上发送PHICH。
用户设备在子帧n+4发送PUSCH后，同样根据例如上述参考文献定义的HARQ 时序关系，将在子帧n+8去解码基站发送的PHICH。尽管基站并没有在子帧n+8发送PHICH，但是基于目前的机制，该用户设备无法提前知道基站在子帧n+8并没有发送PHICH，因此会按照正常的过程继续在n+8时刻解码PHICH上的反馈信息。而这种情况下，在很大概率上用户设备解码的结果都是NACK。这样用户设备根据调度时序关系，就会在接下来一帧的n+2子帧上进行非自适应上行重传。而该重传有可能是没有必要的，或者说要用户设备去做非自适应重传并不是基站的本意。
因此，在非授权频段的服务小区上，基站需要发送PHICH的子帧有可能被其他系统占用，从而导致用户设备在预定的子帧不能获得正确的HARQ反馈信息。简单说，本发明要解决的问题就是在非授权频段的服务小区上面，如果基站需要发送PHICH的子帧被其他系统占用，如何保证用户设备能够正确地进行接下来的上行传输。
值得注意的是，以上仅以TDD模式以及Configuration 3为例进行说明。但是本发明不限于此，可以根据实际情况确定非授权频段上的服务小区的双工模式以及在双工模式为TDD模式的情况下的TDD上下行配置等。以下对本发明实施例进行详细说明。
实施例1
本发明实施例提供一种HARQ反馈的获取方法，应用于用户设备侧。
图2是本发明实施例的HARQ反馈的获取方法的一流程示意图，如图2所示，所述获取方法包括：
步骤201，用户设备在非授权频段的次服务小区上的某一上行子帧中发送上行数据。
步骤202，在发送所述上行数据时，将用于记录所述上行数据传输的反馈状态的变量设为ACK。
步骤203，确定与所述上行子帧相应的下行子帧；所述相应的下行子帧将根据发送上行数据的子帧和例如参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系来确定。
步骤204，在所述非授权频段的次服务小区上与所述上行子帧相应的下行子帧处解码PDCCH，而不解码PHICH。
具体地，用户设备在非授权频段的次服务小区上发送上行数据后，将用于记录所述上行数据传输的反馈状态的变量设为ACK，接下来在所述非授权频段的次服务小区上的相应的下行子帧只监听和解码PDCCH，而不解码PHICH，根据解码的情况判断接下来的传输行为，即：需要进行新数据的传输、还是进行上次数据传输的自适应重传、还是不做任何传输。
图3是本发明实施例的HARQ反馈的获取方法的另一流程示意图，如图3所示，所述获取方法包括：
步骤301，用户设备在非授权频段的次服务小区上某一上行子帧中发送上行数据；
步骤302，在HARQ实体请求发送上述上行数据时，将用于记录所述上行数据传输的反馈状态的变量设为ACK。
在本实施例中，在某个上行子帧，当用户设备的HARQ实体请求上行PUSCH传输(例如可以为新数据传输也可以为自适应重传)时，用户设备将用来记录该上行传输的反馈状态的变量(即当前协议中的HARQ_FEEDBACK)的值设为ACK。
步骤303，在所述非授权频段的次服务小区上与所述上行子帧相应的下行子帧处监听和解码PDCCH。其中，所述相应的下行子帧将根据步骤701中发送上行数据的子帧和例如参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系来确定。
在本实施例中，根据例如参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系，用户设备确定所述上行PUSCH传输对应的下行反馈的接收子帧。在该子帧，用户设备在所述非授权频段的次服务小区上只去解码PDCCH，而不再解码PHICH。
步骤304，确定是否得到调度该用户设备的上行授权；在解码所述PDCCH得到调度该用户设备的上行授权的情况下，执行步骤305；在没有解码所述PDCCH得到调度该用户设备的上行授权的情况下，执行步骤306。
步骤305，按照所述上行授权中的指示确定上行数据的传输；
如果能解码PDCCH得到调度该用户设备的上行授权，用户设备将按照该上行授权中的指示来确定是需要发送新上行数据，还是需要发送上次传输发送的上行数据的自适应重传。
步骤306，确定接下来不进行任何上行数据传输；并且保持如下变量的值不变：记录上行重传次数的变量、记录上行重传版本号的变量以及记录所述上行数据传输的反馈状态的变量。
在本实施例中，如果没有得到调度该用户设备的上行授权，用户设备不做PUSCH传输；同时用户设备将保持如下的值不变：
记录上行重传次数的变量(即，当前协议中的CURRENT_TX_NB)，
记录上行重传版本号的变量(即，当前协议中的CURRENT_IRV)以及
记录该上行传输的反馈状态的变量(即，当前协议中的HARQ_FEEDBACK)。
通过本实施例，用户设备在非授权频段的服务小区上发送上行数据之后，即使在该用户设备的所述非授权频段的次服务小区上基站需要发送PHICH的子帧被其他系统占用，也能保证用户设备正确地接收到基站的反馈，从而进行基站所期望的上行数据传输。
实施例2
本发明实施例提供一种HARQ反馈的获取方法，应用于基站侧。
图4是本发明实施例的HARQ反馈的获取方法的一流程示意图，如图4所示，所述获取方法包括：
步骤401，基站为用户设备配置非授权频段的次服务小区，以及为所述用户设备配置所述次服务小区的相关联小区；使得所述用户设备在所述非授权频段的次服务小区上发送上行数据的情况下，在所述相关联小区上获得上行混合自动重传的反馈信息。
在本实施例中，相关联小区可以是该次服务小区的调度小区；也可以是由基站配置的某个授权频段上的某个服务小区，还可以是固定为是主服务小区。
在本实施例中，用户设备在非授权频段的次服务小区上发送上行数据，而在该次服务小区的相关联小区上接收PHICH，从而可以正确地获取上行HARQ的反馈信息。
实施例3
本发明实施例在实施例2的基础上，以调度小区为例进行说明。
图5是本发明实施例的HARQ反馈的获取方法的另一流程示意图，如图5所示，该获取方法包括：
步骤501，基站为用户设备配置非授权频段的次服务小区，同时基站为用户设备配置该非授权频段的次服务小区的的调度小区；
步骤502，基站调度用户设备在所述非授权频段的次服务小区上发送上行数据。
其中，调度信息可以通过调度小区上的PDCCH发送给用户设备，也可以通过所述非授权频段上的次服务小区上的PDCCH发送给用户设备。
步骤503，用户设备在非授权频段的次服务小区上发送上行数据；
步骤504，基站在非授权频段的次服务小区的调度小区上发送PHICH；
步骤505，用户设备在该调度小区上接收PHICH，获得上行HARQ的反馈信息。
在本实施例中，当基站为用户设备配置一个非授权频段上的次服务小区时，同时会为该用户设备配置该次服务小区对应的调度小区，即意味着该非授权频段上的次服务小区被固定配置为跨载波调度的方式。
所述调度小区可以为主服务小区，也可以为某个授权频段上的某个次服务小区。这样，对于非授权频段上的次服务小区，跨载波调度配置不再是可选的，其出现条件变为在基站为用户设备配置非授权频段上的一个载波作为该用户设备的次服务小区时，跨载波调度是必须配置的；而在基站为该用户设备的所述非授权频段上的次服务小区做其它配置时，跨载波调度配置是不需要的。
在本实施例中，用户设备只在所述非授权频段的次服务小区的上行资源上发送PUSCH，而调度该PUSCH的的PDCCH和反馈该PUSCH上传输数据的ACK/NACK信息的PHICH都将在基站为其配置的所述次服务小区的调度小区的下行资源上接收。或者，用户设备在所述非授权频段的次服务小区的下行资源上接收PDCCH以及在上行资源上发送该PDCCH调度的PUSCH；而反馈该PUSCH上传输数据的ACK/NACK信息的PHICH将在基站为其配置的所述次服务小区的调度小区的下行资源上接收。
例如，基站在为用户设备UE1配置非授权频段的次服务小区SCell 1时，将该SCell 1配置为跨载波调度，且SCell 1的调度小区配置为授权频段上的主服务小区，即PCell。这样，UE1将在PCell上监听对应于SCell1的PDCCH。如果该PDCCH调度了UE1在SCell1上的PUSCH传输，UE1在SCell1上发送承载有数据的PUSCH后，将在PCell上接收相应的PHICH。或者，UE1将在SCell1上监听PDCCH。如果该PDCCH调度了UE1在SCell1上的PUSCH传输，UE1在SCell1上发送承载有数据的PUSCH后，将在PCell上接收相应的PHICH。
通过本实施例，用户设备在非授权频段的次服务小区上发送上行数据之后，即使 在该用户设备的所述非授权频段的次服务小区上，基站需要发送PHICH的子帧被其他系统占用，也能保证用户设备正确地接收到基站的反馈，从而进行基站期望的上行数据传输。
实施例4
本发明实施例在实施例2的基础上，以授权频段的服务小区为例进行说明。
图6是本发明实施例的HARQ反馈的获取方法的另一流程示意图，示出了基站侧的情况。如图6所示，该获取方法包括：
步骤601，基站接收用户设备在非授权频段的次服务小区上某一上行子帧中发送的上行数据。
在本实施例中，对于非授权频段的次服务小区，用户设备被配置了相关联小区；其中，所述相关联小区为授权频段的服务小区。
例如，用户设备的所述非授权频段的次服务小区的相关联小区可以预先定义。例如可以为用户设备的主服务小区；也可以是基站通过专用信令为所述用户设备配置，例如可以为用户设备的任何一个授权频段上的服务小区。如果是后者，基站在为用户设备配置所述非授权频段上的次服务小区时会同时配置给次服务小区所对应的相关联小区。
步骤602，基站判断在所述非授权频段的次服务小区上与所述上行子帧相应的下行子帧是否可用。
具体地，基站判断在所述非授权频段的次服务小区上与步骤601中的上行子帧具有符合例如参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系的下行子帧是否可用。如果可用执行步骤603，如果不可用执行步骤604。
步骤603，基站在所述非授权频段的次服务小区上与所述上行子帧相应的下行子帧中发送所述上行数据传输的混合自动重传反馈。
具体地，基站在所述非授权频段的次服务小区上、与步骤601中的上行子帧具有符合例如参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系的下行子帧中发送所述上行数据传输的混合自动重传反馈。
步骤604，基站在所述非授权频段的次服务小区的相关联小区上与所述上行子帧相应的下行子帧中通过PDCCH发送指示信息。
具体地，基站在所述非授权频段的次服务小区的相关联小区上、与步骤601中的上行子帧具有符合例如参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系的下行子帧中通过PDCCH发送一个指示信息。
该指示信息的作用是：指示用户设备需要在基站为用户设备配置的非授权频段的次服务小区的相关联小区上与步骤601中的上行子帧具有符合例如参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系的下行子帧中，接收PHICH上传输的针对步骤601中的上行数据传输的混合自动重传反馈信息。
其中，发送所述指示信息的所述PDCCH可以通过一个公共的无线网络临时标识(Radio Network TemportaryIndentifier)来加扰，例如，可以新定义一个RNTI用来加扰传输所述指示信息的PDCCH；或者也可以通过一个用户设备专用的无线网络临时标识来加扰，例如可以通过C-RNTI来加扰传输所述指示信息的PDCCH。
所述指示信息可以通过一个新定义的下行控制信息(DCI，Downlink Control Information)格式来传输，也可以通过目前已有的下行控制信息格式来传输。当通过一个新定义的下行控制信息格式来传输时，所述指示信息可以同其它控制信息共用同一个下行控制信息格式，也可以单独使用一个下行控制信息格式。
所述指示信息的内容中可以包括，例如次服务小区索引号(SCellIndex)；或者小区物理标识(Physical Cell Identifier)。其中，所述指示信息指示所述用户设备需要在所述次服务小区的索引值或者所述小区物理标识所对应的非授权频段的次服务小区的相关联小区上与所述上行子帧相应的下行子帧中接收PHICH上传输的针对所述上行数据的混合自动重传反馈信息。
或者，所述指示信息只是一个比特。其中，所述指示信息指示所述用户设备需要在基站为所述用户设备配置的非授权频段的次服务小区的相关联小区上与所述上行子帧相应的下行子帧中接收PHICH上传输的针对所述上行数据的混合自动重传反馈信息。但本发明不限于上述内容。
图7是本发明实施例的HARQ反馈的获取方法的另一流程示意图。对应于图6的基站侧的情况，图7示出了用户设备侧的情况。如图7所示，该获取方法包括：
步骤701，用户设备在非授权频段的次服务小区上某一上行子帧上发送上行数据。
步骤702，用户设备在该非授权频段的次服务小区的相关联小区上与所述上行子帧相应的下行子帧中接收指示信息。其中，所述指示信息通过PDCCH(例如，这里 称为PDCCH1)传输。
具体地，用户设备在非授权频段的次服务小区的相关联小区上监听并解码与步骤701中的上行子帧具有符合例如参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系的下行子帧上传输的PDCCH1。
其中，所述非授权频段的次服务小区的相关联小区的确定方法如下：在所述非授权频段的次服务小区的关联小区固定为所述用户设备的主服务小区的情况下，确定所述非授权频段的次服务小区的关联小区为所述用户设备的主服务小区；在所述授权频段的次服务小区的关联小区为基站通过专用信令配置的情况下，接收基站发送的所述专用信令，并确定所述非授权频段的次服务小区的关联小区为专用信令中指定的服务小区。
具体地，在某个上行子帧，如果用户设备在某个非授权频段的次服务小区上发送了承载有数据的PUSCH，那么用户设备将按照例如参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系确定需要接收所述PUSCH传输对应的PHICH的下行子帧。然后所述用户设备将在所述非授权频段的次服务小区的相关联小区上的所述下行子帧位置处监听PDCCH1。
步骤703，用户设备确定是否能成功接收到所述PDCCH1上传输的所述指示信息；在能够接收到所述指示信息的情况下执行步骤704，在没有接收到所述指示信息的情况下执行步骤705。
具体地，如果用户设备解码PDCCH1得到一个指示信息指示所述用户设备需要在所述非授权频段的次服务小区的相关联小区上与步骤701中的上行子帧具有符合参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系的下行子帧中接收PHICH上传输的针对步骤701中的上行数据传输的混合自动重传反馈信息，那么用户设备将在所述的非授权频段的服务小区的相关联小区上所述下行子帧中进一步解码相应的PHICH和C-RNTI加扰的PDCCH(例如，这里称为PDCCH2)，而不再在所述的非授权频段的服务小区上的对应下行子帧位置解码C-RNTI加扰的PDCCH和PHICH。
发送所述指示信息的所述PDCCH1可以通过一个公共的无线网络临时标识(Radio Network TemportaryIndentifier)来加扰，例如，可以新定义一个RNTI用来加扰传输所述指示信息的PDCCH1；或者也可以通过一个用户设备专用的无线网络临时标识来加扰，例如可以通过C-RNTI来加扰传输所述指示信息的PDCCH1。
所述指示信息可以通过一个新定义的下行控制信息(DCI，Downlink Control Information)格式来传输，也可以通过目前已有的下行控制信息格式来传输。当通过一个新定义的下行控制信息格式来传输时，所述指示信息可以同其它控制信息共用同一个下行控制信息格式，也可以单独使用一个下行控制信息格式。
所述指示信息的内容中可以包括，例如次服务小区索引号(SCellIndex)；或者小区物理标识(Physical Cell Identifier)。其中，所述指示信息指示所述用户设备需要在所述次服务小区的索引值或者所述小区物理标识所对应的非授权频段的次服务小区的相关联小区上与所述上行子帧相应的下行子帧中接收PHICH上传输的针对所述上行数据的混合自动重传反馈信息。
或者，所述指示信息只是一个比特。其中，所述指示信息指示所述用户设备需要在基站为所述用户设备配置的非授权频段的次服务小区的相关联小区上与所述上行子帧相应的下行子帧中接收PHICH上传输的针对所述上行数据的混合自动重传反馈信息。但本发明不限于上述内容。
步骤704，用户设备在非授权频段的次服务小区的相关联小区上同时解码相应PHICH和PDCCH2。
步骤705，用户设备在所述非授权频段的次服务小区上解码PDCCH和PHICH。
具体地，如果用户设备没有解码得到上述PDCCH1上传输的所述指示信息，那么用户设备将正常在非授权频段的次服务小区上与步骤401中的上行子帧具有符合例如参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系的对应下行子帧位置解码PDCCH和PHICH。
通过本实施例，用户设备在非授权频段的次服务小区上发送上行数据之后，即使在该用户设备的所述非授权频段的次服务小区上，基站需要发送PHICH的子帧被其他系统占用，也能保证用户设备正确地接收到基站的反馈，从而进行基站期望的上行数据传输。
实施例5
本发明实施例提供一种上行混合自动重传反馈的获取装置，配置于用户设备。本实施例对应于实施例1，相同的内容不再赘述。
图8是本发明实施例的HARQ反馈的获取装置的一构成示意图，如图8所示， 所述获取装置800包括：
数据发送单元801，在非授权频段的次服务小区上的某一上行子帧中发送上行数据。
记录单元802，在混合自动重传实体请求发送上述上行数据时，将用于记录所述上行数据传输的反馈状态的变量设为ACK。
子帧确定单元803，确定与数据发送单元801中发送数据的上行子帧所对应的下行子帧。其中，所述下行子帧是与数据发送单元801中上行子帧具有符合例如参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系的下行子帧。
解码单元804，在非授权频段的次服务小区上的所述上行子帧中发送上行数据的情况下，在所述非授权频段的次服务小区上与所述上行子帧相应的下行子帧处监听和解码PDCCH，而不解码PHICH。
在本实施例中，用户设备可以根据解码的PDCCH中的信息判断接下来的传输行为，即：需要进行新数据的传输、还是进行上次数据传输的自适应重传、还是不做任何上行数据传输。
如图8所示，所述获取装置800还可以包括：
传输确定单元805，在解码所述PDCCH得到调度该用户设备的上行授权的情况下，按照所述上行授权中的指示确定上行数据的传输；在没有得到所述上行授权的情况下，确定接下来不进行任何上行数据传输。
其中，所述记录单元802还可以用于：在确定不进行上行数据传输的情况下，保持如下变量的值不变：记录上行重传次数的变量、记录上行重传版本号的变量以及记录所述上行数据传输的反馈状态的变量。
本发明实施例还提供一种用户设备，配置有上述的HARQ反馈的获取装置800。
图9是本发明实施例的用户设备900的系统构成的一示意框图。如图9所示，该用户设备900可以包括中央处理器100和存储器140；存储器140耦合到中央处理器100。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
在一个实施方式中，获取装置900的功能可以被集成到中央处理器100中。其中，中央处理器100可以被配置为实现如实施例1所述的上行混合自动重传反馈的获取方法。
在另一个实施方式中，获取装置800可以与中央处理器100分开配置，例如可以将获取装置800配置为与中央处理器100连接的芯片，通过中央处理器的控制来实现获取装置800的功能。
如图9所示，该用户设备900还可以包括：通信模块110、输入单元120、音频处理单元130、显示器160、电源170。值得注意的是，用户设备900也并不是必须要包括图9中所示的所有部件；此外，用户设备900还可以包括图9中没有示出的部件，可以参考现有技术。
如图9所示，中央处理器100有时也称为控制器或操作控件，可以包括微处理器或其他处理器装置和/或逻辑装置，该中央处理器100接收输入并控制用户设备900的各个部件的操作。
其中，存储器140，例如可以是缓存器、闪存、硬驱、可移动介质、易失性存储器、非易失性存储器或其它合适装置中的一种或更多种。可储存与失败有关的信息，此外还可存储执行有关信息的程序。并且中央处理器100可执行该存储器140存储的该程序，以实现信息存储或处理等。其他部件的功能与现有类似，此处不再赘述。用户设备900的各部件可以通过专用硬件、固件、软件或其结合来实现，而不偏离本发明的范围。
通过本实施例，用户设备在非授权频段的次服务小区上发送上行数据之后，即使在该用户设备的所述非授权频段的次服务小区上，基站需要发送PHICH的子帧被其他系统占用，也能保证用户设备正确地接收到基站的反馈，从而进行基站期望的上行数据传输。
实施例6
本发明实施例提供一种HARQ反馈的获取装置。本实施例对应于实施例2，相同的内容不再赘述。
图10是本发明实施例的HARQ反馈的获取装置的一构成示意图，配置于基站。如图10所示，所述获取装置1000包括：
配置单元1001，为用户设备配置非授权频段的次服务小区，以及为所述用户设备配置所述次服务小区的相关联小区；使得所述用户设备在所述非授权频段的次服务小区上发送上行数据的情况下，在所述相关联小区上获得上行混合自动重传的反馈信 息。
本实施例还提供一种基站，配置有如上所述的HARQ反馈的获取装置1000。
图11是本发明实施例的基站的一构成示意图。如图11所示，基站1100可以包括：中央处理器(CPU)200和存储器210；存储器210耦合到中央处理器200。其中该存储器210可存储各种数据；此外还存储信息处理的程序，并且在中央处理器200的控制下执行该程序，以接收该用户设备发送的各种信息、并且向用户设备发送请求信息。
其中，中央处理器200可以被配置为实现HARQ反馈的获取装置1000的功能。
此外，如图11所示，基站1100还可以包括：收发机220和天线230等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，基站1100也并不是必须要包括图11中所示的所有部件；此外，基站1100还可以包括图11中没有示出的部件，可以参考现有技术。
通过本实施例，用户设备在非授权频段的次服务小区上发送上行数据之后，即使在该用户设备的所述非授权频段的次服务小区上，基站需要发送PHICH的子帧被其他系统占用，也能保证用户设备正确地接收到基站的反馈，从而进行基站期望的上行数据传输。
实施例7
本发明实施例提供一种HARQ反馈的获取装置。本实施例对应于实施例3，相同的内容不再赘述。
在本实施例中，所述相关联小区为所述非授权频段的次服务小区的调度小区。该HARQ反馈的获取装置的构成可如图10所示，所述配置单元1001具体用于：在为所述用户设备配置所述非授权频段的次服务小区时，为所述用户设备配置所述次服务小区的调度小区。
在本实施例中，当基站为用户设备配置一个非授权频段上的次服务小区时，同时会为该用户设备配置该次服务小区对应的调度小区，即意味着该非授权频段上的次服务小区被固定配置为跨载波调度的方式。
所述调度小区可以为主服务小区，也可以为某个授权频段上的某个次服务小区。这样，对于非授权频段上的次服务小区，跨载波调度配置不再是可选的，其出现条件 变为在基站为用户设备配置非授权频段上的一个载波作为该用户设备的次服务小区时，跨载波调度是必须配置的；而在基站为该用户设备的所述非授权频段上的次服务小区做其它配置时，跨载波调度配置是不需要的。
本实施例还提供一种基站，配置有如上所述的HARQ反馈的获取装置1000。其中，中央处理器200可以被配置为实现本实施例的配置单元1001的功能。本发明实施例的基站的构成示意图可如图11所示。
通过本实施例，用户设备在非授权频段的次服务小区上发送上行数据之后，即使在该用户设备的所述非授权频段的次服务小区上，基站需要发送PHICH的子帧被其他系统占用，也能保证用户设备正确地接收到基站的反馈，从而进行基站期望的上行数据传输。
实施例8
本发明实施例提供一种HARQ反馈的获取装置。本实施例对应于实施例4，相同的内容不再赘述。
在本实施例中，所述相关联小区为授权频段的服务小区。其中，所述授权频段的服务小区为所述用户设备的主服务小区；或者在通过专用信令为所述用户设备配置所述非授权频段的次服务小区时，所述授权频段的服务小区同时被配置。
图12是本发明实施例的HARQ反馈的获取装置的一构成示意图，该HARQ反馈的获取装置1200配置于基站中。如图12所示，所述获取装置1200包括如上所述的配置单元1001；
如图12所示，所述获取装置1200还可以包括：
数据接收单元1201，接收到用户设备在所述非授权频段的次服务小区上某一上行子帧中发送的上行数据；
子帧判断单元1202，在接收到用户设备在所述非授权频段的次服务小区上所述上行子帧中发送的上行数据后，判断在所述非授权频段的次服务小区上与所述上行子帧相应的下行子帧是否可用；
其中，所述的下行子帧是与数据接收单元1201中的上行子帧具有符合例如参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系的下行子帧。
信息生成单元1203，在所述非授权频段的次服务小区上与所述上行子帧相应的 下行子帧不可用的情况下生成指示信息。
其中，该指示信息的作用是：指示用户设备需要在所述非授权频段的次服务小区的相关联小区上相应下行子帧中接收PHICH上传输的针对数据接收单元1201中的上行数据传输的混合自动重传反馈信息。
所述指示信息可以通过一个新定义的下行控制信息(DCI，Downlink Control Information)格式来传输，也可以通过目前已有的下行控制信息格式来传输。当通过一个新定义的下行控制信息格式来传输时，所述指示信息可以同其它控制信息共用同一个下行控制信息格式，也可以单独使用一个下行控制信息格式。
所述指示信息的内容中可以包括，例如次服务小区索引号(SCellIndex)；或者小区物理标识(Physical Cell Identifier)。所述指示信息指示所述用户设备需要在所述次服务小区的索引值或者所述小区物理标识所对应的非授权频段的次服务小区的相关联小区上与所述上行子帧相应的下行子帧中接收PHICH上传输的针对所述上行数据的混合自动重传反馈信息。
或者，所述指示信息只是一个比特。其中，所述指示信息指示所述用户设备需要在基站为所述用户设备配置的非授权频段的次服务小区的相关联小区上与所述上行子帧相应的下行子帧中接收PHICH上传输的针对所述上行数据的混合自动重传反馈信息。但本发明不限于上述内容。
信息发送单元1204，在配置单元1001中配置的所述非授权频段的次服务小区的相关联小区上的与所述上行子帧相应的下行子帧中将所述指示信息承载在PDCCH中发送。
其中，发送所述指示信息的所述PDCCH可以通过一个公共的无线网络临时标识(Radio Network TemportaryIndentifier)来加扰，例如，可以新定义一个RNTI用来加扰传输所述指示信息的PDCCH；或者也可以通过一个用户设备专用的无线网络临时标识来加扰，例如可以通过C-RNTI来加扰传输所述指示信息的PDCCH。
本实施例还提供一种基站，配置有如上所述的HARQ反馈的获取装置1200。本发明实施例的基站的构成示意图可如图11所示。
图13是本发明实施例的HARQ反馈的获取装置的另一构成示意图，该HARQ反馈的获取装置1300配置于用户设备中。如图13所示，所述获取装置1300包括：
数据发送单元1301，在非授权频段的次服务小区上某一上行子帧中发送上行数 据；
子帧确定单元1302，确定与数据发送单元1301中发送数据的上行子帧所对应的下行子帧。其中，所述下行子帧是与数据发送单元1101中的上行子帧具有符合例如参考文献[TS36.213，v12.3.0]中定义的HARQ时序关系的下行子帧。
信息接收单元1303，在相关联小区上的下行子帧处监听PDCCH。
其中，所述相关联小区可以固定为所述用户设备的主服务小区；也可以是通过接收基站发送的专用信令而配置的授权频段的服务小区。所述下行子帧为所述子帧确定单元1302中确定的下行子帧。
其中，所述PDCCH可以通过一个公共的无线网络临时标识(Radio Network TemportaryIndentifier)来加扰，例如，可以新定义一个RNTI用来加扰传输所述指示信息的PDCCH；或者也可以通过一个用户设备专用的无线网络临时标识来加扰，例如可以通过C-RNTI来加扰传输所述指示信息的PDCCH。
解码单元1304，在接收到所述PDCCH并且从所述PDCCH解码得到一个指示信息的情况下，在所述非授权频段的次服务小区的相关联小区上所述下行子帧处同时解码PHICH和PDCCH；在没有得到所述指示信息的情况下，在所述非授权频段的次服务小区上所述下行子帧处解码PDCCH和PHICH。
其中，该指示信息的作用是：指示用户设备需要在所述非授权频段的次服务小区的相关联小区上相应下行子帧中接收PHICH上传输的针对数据发送单元1301中的上行数据传输的混合自动重传反馈信息。
所述指示信息可以通过一个新定义的下行控制信息格式来传输，也可以通过目前已有的下行控制信息格式来传输。当通过一个新定义的下行控制信息格式来传输时，所述指示信息可以同其它控制信息共用同一个下行控制信息格式，也可以单独使用一个下行控制信息格式。
所述指示信息的内容中可以包括，例如次服务小区索引号(SCellIndex)；或者小区物理标识(Physical Cell Identifier)。其中，所述指示信息指示所述用户设备需要在所述次服务小区的索引值或者所述小区物理标识所对应的非授权频段的次服务小区的相关联小区上与所述上行子帧相应的下行子帧中接收PHICH上传输的针对所述上行数据的混合自动重传反馈信息。
或者，所述指示信息只是一个比特。其中，所述指示信息指示所述用户设备需要 在基站为所述用户设备配置的非授权频段的次服务小区的相关联小区上与所述上行子帧相应的下行子帧中接收PHICH上传输的针对所述上行数据的混合自动重传反馈信息。但本发明不限于上述内容。
如图13所示，所述获取装置1300还可以包括：
关联小区确定单元1305，在所述非授权频段的次服务小区的关联小区固定为所述用户设备的主服务小区的情况下，确定所述非授权频段的次服务小区的关联小区为所述用户设备的主服务小区；在所述授权频段的次服务小区的关联小区为基站通过专用信令配置的情况下，接收基站发送的所述专用信令，并确定所述非授权频段的次服务小区的关联小区为专用信令中指定的服务小区。
本实施例还提供一种用户设备，配置有如上所述的HARQ反馈的获取装置1300。本发明实施例的基站的构成示意图可如图9所示。
在本实施例中，如上所述，基站在所述非授权频段的次服务小区上无法使用下行信道时，在所述授权频段的服务小区上发送PDCCH。此外，对于非授权频段的次服务小区，用户设备被配置了授权频段的服务小区。
通过本实施例，用户设备在非授权频段的服务小区上发送上行数据之后，即使在该用户设备的所述非授权频段的次服务小区上基站需要发送PHICH的子帧被其他系统占用，也能保证用户设备正确地接收到基站的反馈，从而进行基站所期望的上行数据传输。
实施例9
本发明实施例提供一种通信系统，图14是本发明实施例的通信系统的一构成示意图。如图14所示，该通信系统1400包括基站1401以及用户设备1402。
在一个实施方式中，基站1401中配置有如实施例6、7所述的HARQ反馈的获取装置1000或者实施例8所述的HARQ反馈的获取装置1200。基站1401可以执行如实施例2至4所述的HARQ反馈的获取方法。
在另一个实施方式中，用户设备1402中配置有如实施例5所述的HARQ反馈的获取装置800；用户设备1402可以执行如实施例1所述的HARQ反馈的获取方法。或者，用户设备1402中配置有如实施例8所述的HARQ反馈的获取装置1300；用户设备1402可以执行如实施例4所述的HARQ反馈的获取方法。
本发明实施例还提供一种计算机可读程序，其中当在基站中执行所述程序时，所述程序使得计算机在所述基站中执行实施例2至4所述的HARQ反馈的获取方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在基站中执行实施例2至4所述的HARQ反馈的获取方法。
本发明实施例还提供一种计算机可读程序，其中当在用户设备中执行所述程序时，所述程序使得计算机在所述用户设备中执行实施例1所述的HARQ反馈的获取方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在用户设备中执行实施例1所述的HARQ反馈的获取方法。
本发明以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本发明涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本发明还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
针对附图中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本发明保护范围的限制。本领域技术人员可以根据本发明的精神和原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围内。

Claims (17)

  1. 一种混合自动重传反馈的获取装置，配置于用户设备中，所述获取装置包括：
    数据发送单元，在非授权频段的次服务小区上的某一上行子帧中发送上行数据；
    记录单元，在发送所述上行数据时将用于记录所述上行数据传输的反馈状态的变量设为ACK；
    子帧确定单元，确定与所述上行子帧所对应的下行子帧；
    解码单元，在所述非授权频段的次服务小区上与所述上行子帧相应的下行子帧中解码物理下行控制信道，而不解码物理混合自动重传请求指示信道。
  2. 根据权利要求1所述的获取装置，其中，所述获取装置还包括：
    传输确定单元，在解码所述物理下行控制信道得到调度所述用户设备的上行授权的情况下，按照所述上行授权中的指示确定上行数据的传输；在没有得到调度所述用户设备的上行授权的情况下，确定不进行上行数据传输。
  3. 根据权利要求1所述的获取装置，其中，所述记录单元还用于：在确定不进行上行数据传输的情况下，保持如下变量的值不变：记录上行重传次数的变量、记录上行重传版本号的变量以及记录所述上行数据传输的反馈状态的变量。
  4. 一种混合自动重传反馈的获取装置，配置于基站中，所述获取装置包括：
    配置单元，为用户设备配置非授权频段的次服务小区，以及为所述用户设备配置所述次服务小区的相关联小区；使得所述用户设备在所述非授权频段的次服务小区上发送上行数据的情况下，在所述相关联小区上获得上行混合自动重传的反馈信息。
  5. 根据权利要求4所述的获取装置，其中，所述相关联小区为所述非授权频段的次服务小区的调度小区；
    所述配置单元在为所述用户设备配置所述非授权频段的次服务小区时，为所述用户设备配置所述次服务小区的调度小区。
  6. 根据权利要求5所述的获取装置，其中，所述调度小区为授权频段上的主服务小区或者为授权频段上的次服务小区。
  7. 根据权利要求4所述的获取装置，其中，所述相关联小区为授权频段的服务小区。
  8. 根据权利要求7所述的获取装置，其中，所述授权频段的服务小区为所述用 户设备的主服务小区；
    或者在通过专用信令为所述用户设备配置所述非授权频段的次服务小区时，所述授权频段的服务小区同时被配置。
  9. 根据权利要求7所述的获取装置，其中，所述获取装置还包括：
    数据接收单元，接收用户设备在所述非授权频段的次服务小区上某一上行子帧中发送的上行数据；
    子帧判断单元，判断在所述非授权频段的次服务小区上与所述上行子帧相应的下行子帧是否可用；
    信息生成单元，在所述非授权频段的次服务小区上与所述上行子帧相应的下行子帧不可用的情况下生成指示信息；所述指示信息用于：指示用户设备在所述授权频段的服务小区上与所述上行子帧相应的下行子帧中接收混合自动重传反馈信息；
    信息发送单元，在所述授权频段的服务小区上与所述上行子帧相应的下行子帧中通过物理下行控制信道发送所述指示信息。
  10. 根据权利要求9所述的获取装置，其中，所述指示信息中包括所述非授权频段的次服务小区的索引值，或者小区物理标识。
  11. 根据权利要求10所述的获取装置，其中，所述指示信息指示所述用户设备需要在所述次服务小区的索引值或者所述小区物理标识所对应的非授权频段的次服务小区的相关联小区上与所述上行子帧相应的下行子帧中接收PHICH上传输的针对所述上行数据的混合自动重传反馈信息。
  12. 根据权利要求9所述的获取装置，其中，所述指示信息为一比特的信息；
  13. 根据权利要求12所述的获取装置，其中，所述指示信息指示所述用户设备需要在基站为所述用户设备配置的非授权频段的次服务小区的相关联小区上与所述上行子帧相应的下行子帧中接收PHICH上传输的针对所述上行数据的混合自动重传反馈信息。
  14. 根据权利要求9所述的获取装置，其中，所述指示信息通过新定义的下行控制信息格式来传输，或者通过目前已有的下行控制信息格式来传输。
  15. 根据权利要求14所述的获取装置，其中，在通过新定义的下行控制信息格式来传输所述指示信息时，所述指示信息同其它控制信息共用同一下行控制信息格式，或者单独使用一个下行控制信息格式。
  16. 根据权利要求9所述的获取装置，其中，所述物理下行控制信道通过公共的无线网络临时标识来加扰，或者通过用户设备专用的无线网络临时标识来加扰。
  17. 一种通信系统，所述通信系统包括：配置了如权利要求1所述的混合自动重传反馈的获取装置的用户设备；
    或者配置了权利要求5所述的混合自动重传反馈的获取装置的基站。
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KR20170068510A (ko) 2017-06-19
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