WO2014056198A1 - Harq反馈的传输方法和装置 - Google Patents

Harq反馈的传输方法和装置 Download PDF

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Publication number
WO2014056198A1
WO2014056198A1 PCT/CN2012/082878 CN2012082878W WO2014056198A1 WO 2014056198 A1 WO2014056198 A1 WO 2014056198A1 CN 2012082878 W CN2012082878 W CN 2012082878W WO 2014056198 A1 WO2014056198 A1 WO 2014056198A1
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WO
WIPO (PCT)
Prior art keywords
harq
communication device
harq process
base station
data
Prior art date
Application number
PCT/CN2012/082878
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English (en)
French (fr)
Inventor
曾清海
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201280036232.1A priority Critical patent/CN103875192B/zh
Priority to PCT/CN2012/082878 priority patent/WO2014056198A1/zh
Publication of WO2014056198A1 publication Critical patent/WO2014056198A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092Error control systems characterised by the topology of the transmission link
    • H04L2001/0097Relays

Definitions

  • the present invention relates to communication technologies, and in particular, to a hybrid automatic repeat request (HQQ) feedback transmission method and apparatus.
  • HQQ hybrid automatic repeat request
  • Carrier aggregation technology is a technology used to improve the throughput of a terminal.
  • a carrier aggregation technology in a long term evolution (LTE) system supports a terminal to simultaneously transmit data with multiple cells, in multiple carriers. Simultaneous transmission, thereby increasing the transmission bandwidth.
  • LTE long term evolution
  • the current carrier aggregation technology only supports the aggregation of cells in the same base station, that is, multiple cells participating in the aggregation belong to the same base station, and are divided into a primary cell and a secondary cell.
  • the terminal and each cell use HARQ technology.
  • the base station can downlink the data to the terminal in HARQ mode through the carrier of a certain cell.
  • the downlink transmission may be performed by using a HARQ multi-process.
  • the terminal After receiving the downlink data transmitted by a certain HARQ process, the terminal needs to return HARQ feedback to the base station, where the HARQ feedback is, for example, ACK (representing correct reception), NACK.
  • HARQ feedback for downlink data transmission of all cells participating in the aggregation is generally sent to the base station through the uplink of the primary cell.
  • the present invention provides a method and apparatus for transmitting HARQ feedback to implement HARQ feedback transmission across a base station.
  • a first aspect of the present invention provides a method for transmitting HARQ feedback, including:
  • the method further includes: when the first communications device or the second communications device is a secondary base station, acquiring an inter-station transmission delay between the secondary base station and the secondary base station; Inter-station transmission delay, determining, by the second communication device, the HARQ round-trip time RTT for transmitting the data by using the HARQ process; sending, to the second communication device, indication information for identifying the HARQ RTT, so that The second communication device sets the HARQ RTT according to the indication information.
  • the sending, by the second communications device, the indication information that is used to identify the HARQ RTT The second communication device transmits the HARQ RTT, so that the second communication device increases the current number of HARQ processes until the current HARQ RTT of the second communication device is increased to the HARQ RTT.
  • the sending, by the second communications device, the indication information that is used to identify the HARQ RTT includes: The second communication device sends the number of HARQ processes, and the number of the HARQ processes is determined according to the HARQ RTT, so that the second communication device increases the current number of HARQ processes to the number of the HARQ processes.
  • the method further includes: sending the indication information to the The first communication device is configured to enable the first communication device to adjust a HARQ buffer corresponding to the HARQ process according to the indication information.
  • the sending, by the second communications device, the indication information that is used to identify the HARQ RTT The second communication device determines the mapping relationship between the HARQ process and the subframe position, where the mapping relationship is determined according to the HARQ RTT, so that the second communications device sets the HARQ process according to the mapping relationship. Subframe position.
  • the HARQ process information includes: an identifier of the HARQ process.
  • the HARQ process information includes a subframe position, where the subframe position includes: a subframe position where the HARQ feedback is located, or a subframe position where the data corresponding to the HARQ feedback transmitted by the HARQ process is located.
  • the first possible implementation manner of the first aspect when the data is downlink transmission data, the second communication device For the secondary base station, the first communication device is a terminal; when the data is uplink transmission data, the second communication device is a terminal, and the first communication device is a secondary base station.
  • the HARQ process information further includes: a cell identifier of the serving cell corresponding to the HARQ process.
  • a second aspect of the present invention provides a method for transmitting HARQ feedback, including:
  • HARQ process information for identifying the HARQ process, and HARQ feedback corresponding to the data
  • the HARQ feedback is sent by the first communications device to the primary base station, and is used for feedback a case where the first communication device receives the data through the HARQ process
  • the method further includes: receiving, by the primary base station, indication information for identifying a HARQ round-trip time RTT, where the indication information is that the primary base station is configured according to the primary base station and the secondary base station The inter-station transmission delay is determined; and the HARQ RTT for transmitting data using the HARQ process is set according to the indication information.
  • the indication information includes: the HARQ RTT; the setting, according to the indication information, the HARQ RTT for transmitting data by using the HARQ process, including: adding a local current HARQ process quantity according to the HARQ RTT until The current HARQ RTT is added to the HARQ RTT.
  • the indication information includes: a number of HARQ processes, where the number of the HARQ processes is determined by the primary base station according to the HARQ RTT
  • the setting, according to the indication information, the HARQ RTT that uses the HARQ process to transmit data includes: adding a local current HARQ process quantity to the HARQ process quantity according to the number of the HARQ processes.
  • the indication information includes: a mapping relationship between a HARQ process and a subframe position, where the mapping relationship is The HARQ RTT is determined according to the indication information, and the setting, by using the HARQ process, the HARQ RTT for transmitting data according to the indication information, includes: setting a HARQ process in a corresponding sub-port according to a mapping relationship between the HARQ process and a subframe position. Frame position.
  • the receiving primary base station sends
  • the HARQ process information used to identify the HARQ process includes: receiving an identifier of the HARQ process sent by the primary base station.
  • the receiving the HARQ process information that is sent by the primary base station to identify the HARQ process includes: receiving, by the primary base station, a subframe position corresponding to the HARQ process, where The subframe position includes: a subframe position where the HARQ feedback is located, or a subframe position where the data is located.
  • the first communications device when the data is downlink transmission data, the first communications device is a terminal; When the data is uplink transmission data, the first communication device is a secondary base station.
  • the HARQ process information further includes: a cell identifier of the service cell corresponding to the HARQ process.
  • a third aspect of the present invention provides a base station, including: a receiving unit, configured to receive a hybrid automatic repeat request HARQ feedback sent by the first communications device, where the HARQ feedback is used to feed back data received by the first communications device from the second communications device through the HARQ process;
  • a sending unit configured to transmit the HARQ process information used to identify the HARQ process and the HARQ feedback to the second communications device, so that the second communications device determines whether to pass the HARQ feedback according to the HARQ feedback
  • the HARQ process retransmits the data.
  • the round-trip time indicating unit includes: an inter-station delay acquiring sub-unit, configured to: when the first communications device or the second communications device is And obtaining, by the secondary base station, an inter-station transmission delay between the secondary base station; and a round-trip time determining sub-unit, configured to determine, according to the inter-station transmission delay, that the second communication device uses the HARQ process transmission a HARQ round-trip time RTT of the data; an indication information determining subunit, configured to determine, according to the HARQ RTT, indication information used to identify the HARQ RTT; an indication information sending subunit, configured to send the indication information to the a second communication device, such that the second communication device sets the HARQ RTT according to the indication information.
  • the indication information that is determined by the indication information determining subunit includes at least one of: the HARQ RTT; a number of HARQ processes; and, the HARQ process and The mapping relationship of subframe positions.
  • the sending unit is specifically configured to obtain an identifier of the HARQ process, and the HARQ The identifier of the process and the HARQ feedback are transmitted to the second communication device.
  • the sending unit is specifically configured to acquire Determining a subframe position corresponding to the HARQ process, and transmitting the subframe position and the HARQ feedback to the second communication device; where the subframe position includes: a subframe position where the HARQ feedback is located, Or the HARQ process transmits a subframe position where the data corresponding to the HARQ feedback is located.
  • a fourth aspect of the present invention provides a communication device, including:
  • a sending unit configured to send data to the first communications device by using a hybrid automatic repeat request HARQ process
  • a receiving unit configured to receive a HARQ feed sent by the primary base station to identify the HARQ process And the HARQ feedback corresponding to the data, where the HARQ feedback is sent by the first communications device to the primary base station, and is used to feed back the first communications device to receive the data by using the HARQ process.
  • a processing unit configured to determine, according to the HARQ feedback, whether the data is retransmitted by the HARQ process.
  • the method further includes: a round-trip time setting unit, configured to receive indication information that is sent by the primary base station to identify a HARQ round-trip time RTT, and set the use according to the indication information.
  • the HARQ process transmits the HARQ RTT of the data, where the indication information is determined by the primary base station according to an inter-station transmission delay between the primary base station and the secondary base station.
  • the indication information includes: the HARQ RTT; the round-trip time setting unit is specifically configured to add a local current HARQ The number of processes until the current HARQ RTT is added to the HARQ RTT.
  • the indication information includes: a number of HARQ processes, where the number of the HARQ processes is determined by the primary base station according to the HARQ RTT
  • the round-trip time setting unit is specifically configured to increase the number of local current HARQ processes to the number of the HARQ processes.
  • the indication information includes: a mapping relationship between a HARQ process and a subframe position, where the mapping relationship is And determining, by the HARQ RTT, the round-trip time setting unit is configured to set the HARQ process to a corresponding subframe position according to the mapping relationship.
  • the receiving unit is specifically configured to receive an identifier of the HARQ process and the HARQ feedback sent by the primary base station; And receiving, by the primary base station, a subframe position corresponding to the HARQ process and the HARQ feedback; where the subframe position includes: a subframe position where the HARQ feedback is located, or a transmission by the HARQ process The HARQ feedback corresponds to the subframe position where the data is located.
  • the communications device is a user terminal or a secondary base station.
  • a fifth aspect of the present invention provides a base station, including:
  • a receiver configured to receive a hybrid automatic repeat request HARQ feedback sent by the first communications device, where the HARQ feedback is used to feed back data received by the first communications device from the second communications device through the HARQ process;
  • a transmitter configured to: use the HARQ process information to identify the HARQ process and
  • the HARQ feedback is transmitted to the second communication device, so that the second communication device determines, according to the HARQ feedback, whether the data is retransmitted by the HARQ process.
  • the method further includes: a processor, configured to: when the first communication device or the second communication device is a secondary base station, acquire inter-station transmission between the secondary base station and the secondary base station Determining, according to the inter-station transmission delay, determining a HARQ round-trip time RTT for the second communication device to use the HARQ process to transmit data; and determining indication information for identifying the HARQ RTT according to the HARQ RTT;
  • the transmitter is further configured to send the indication information that identifies the HARQ RTT to the second communications device, so that the second communications device sets the HARQ RTT according to the indication information.
  • the indication information includes at least one of the following: the HARQ RTT; a number of HARQ processes; and, the HARQ process and a sub- The mapping relationship of frame positions.
  • the processor is specifically configured to obtain an identifier of the HARQ process.
  • the processor is further configured to obtain an identifier of a HARQ process; Specifically, the identifier of the HARQ process and the HARQ feedback are transmitted to the second communications device.
  • the processor is further configured to acquire a subframe position corresponding to the HARQ process.
  • the transmitter is specifically configured to: transmit the subframe position and the HARQ feedback to the second communications device, where the subframe location includes: a subframe position where the HARQ feedback is located, or a location The subframe position where the data is located; the HARQ process information includes the subframe position.
  • a sixth aspect of the present invention provides a communication device, including: a transmitter, configured to send data to the first communications device by using a HARQ process;
  • a receiver configured to receive HARQ process information that is sent by the primary base station to identify the HARQ process, and HARQ feedback corresponding to the data, where the HARQ feedback is sent by the first communications device to the primary base station, And used to feed back the situation that the first communications device receives the data through the HARQ process;
  • a processor configured to determine, according to the HARQ feedback, whether to retransmit the data by using the HARQ process.
  • the receiver is further configured to receive, by the primary base station, indication information for identifying a HARQ round-trip time RTT, where the indication information is that the primary base station is configured according to the primary base station And determining, by the processor, a HARQ RTT that uses the HARQ process to transmit the data according to the indication information.
  • the processor is configured to increase a local current HARQ process quantity when the indication information includes the HARQ RTT Until the current HARQ RTT is added to the HARQ RTT.
  • the processor is configured to: when the indication information includes the number of the HARQ processes, increase the local current HARQ process quantity to The number of HARQ processes.
  • the processor is specifically configured to: when the indication information includes a mapping relationship between a HARQ process and a subframe position, The mapping relationship sets the HARQ process at the corresponding subframe position.
  • the receiver is configured to receive an identifier of the HARQ process and the HARQ feedback sent by the primary base station; And receiving, by the primary base station, a subframe position corresponding to the HARQ process and the HARQ feedback; where the subframe position includes: a subframe position where the HARQ feedback is located, or the HARQ process transmits a HARQ The position of the subframe where the corresponding data is fed back.
  • the communication device is a user terminal or a secondary base station.
  • the technical effects of the HARQ feedback transmission method and apparatus provided by the present invention are as follows: The station forwards the HARQ feedback to the second communication device, and implements the transmission of the HARQ feedback across the base station. DRAWINGS
  • FIG. 1 is a schematic diagram of an application system architecture of a method for transmitting HARQ feedback according to the present invention
  • FIG. 2 is a schematic diagram of a HARQ process involved in a method for transmitting HARQ feedback according to the present invention
  • FIG. 3 is a schematic diagram of a method for transmitting HARQ feedback according to the present invention
  • FIG. 4 is a schematic flowchart of another embodiment of a method for transmitting HARQ feedback according to the present invention
  • FIG. 5 is a schematic diagram of signaling according to still another embodiment of a method for transmitting HARQ feedback according to the present invention
  • FIG. 6 is a schematic diagram of HARQ feedback according to the present invention
  • FIG. 1 is a schematic diagram of an application system architecture of a method for transmitting HARQ feedback according to the present invention
  • FIG. 2 is a schematic diagram of a HARQ process involved in a method for transmitting HARQ feedback according to the present invention
  • FIG. 3 is a schematic diagram of a method for
  • FIG. 7 is a schematic diagram of signaling of a further embodiment of a method for transmitting HARQ feedback according to the present invention
  • FIG. 8 is a schematic diagram of a HARQ process setting in another embodiment of a method for transmitting HARQ feedback according to the present invention.
  • FIG. 9 is a schematic structural diagram of an embodiment of a primary base station according to the present invention.
  • FIG. 10 is a schematic structural diagram of an embodiment of a communication device according to the present invention.
  • FIG. 11 is a structural diagram of an entity of an embodiment of a base station according to the present invention.
  • FIG. 12 is a structural diagram of an entity of an embodiment of a communication device according to the present invention. detailed description
  • FIG. 1 is a schematic structural diagram of an application system of a method for transmitting a HARQ feedback according to the present invention.
  • one of the three cells participates in the aggregation, one of which is the primary base station, and the other is the secondary base station.
  • the primary cell and one secondary cell belong to the primary base station, and the other secondary cell belongs to the secondary base station.
  • the terminal needs to return HARQ feedback to the secondary base station to inform the secondary base station whether the data has been correctly received.
  • the terminal transmits the uplink to the primary base station through the carrier of the primary cell, and then the primary base station forwards the HARQ feedback to the secondary base station.
  • the primary base station and the secondary base station are also included, and the HARQ feedback of the downlink transmission data of the secondary base station is also forwarded by the primary base station.
  • the forwarding transmission process between the base stations for the HARQ feedback is mainly described. For example, how the HARQ feedback of the secondary base station downlink transmission is forwarded by the primary base station.
  • the method for transmitting the HARQ feedback in the embodiment of the present invention is also applicable to the feedback of the uplink transmission data.
  • the secondary base station After the terminal transmits data to the secondary base station, the secondary base station returns the HARQ feedback to the terminal, and the secondary base station does not provide the downlink.
  • the HARQ feedback is also forwarded to the terminal through the primary base station.
  • the processing on the terminal side in the case of the uplink transmission is the same as the processing on the secondary base station side in the case of the downlink transmission. Therefore, in the following embodiments, only the following transmission procedure is used as an example of the HARQ feedback of the present invention. The transmission method will be explained.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WMA Wideband code division multiple access
  • WCDMA Wideband Code Division Multiple Access Wireless
  • FDMA Frequency Division Multiple Addressing
  • OFDMA Orthogonal Frequency-Division Multiple Access
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the terminal involved in the present application may be a wireless terminal or a wired terminal, the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connection function, or other device connected to the wireless modem. Processing equipment.
  • the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal
  • RAN Radio Access Network
  • the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • a wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Device User Equipment.
  • a base station (e.g., an access point) referred to in this application may refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate the management of attributes to the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), this application is not limited.
  • BTS Base Transceiver Station
  • NodeB base station
  • NodeB evolved base station in LTE
  • LTE NodeB or eNB or e-NodeB, evolutional Node B
  • FIG. 2 is a schematic diagram of a HARQ process involved in an embodiment of a method for transmitting HARQ feedback according to the present invention, and the following concept is illustrated based on FIG. 2:
  • the HARQ process is: The secondary base station sends the downlink data to the terminal at the position of the subframe 0 of the frame structure 0, and receives the HARQ feedback of the corresponding data returned by the terminal in the subframe 4, where the HARQ feedback is used to feed back the first communication.
  • the process is equivalent to the fact that each HARQ process is responsible for the transmission of a certain data until the data is transmitted or reaches the preset maximum number of attempts.
  • HARQ RTT indicates the round trip time (RTT) of the HARQ, which is the time interval between the transmission of a certain data using the HARQ process and the data transmission using the HARQ process; of course, the re-use
  • the HARQ process transmits, which may be to transmit new data or retransmit the original data.
  • Synchronous HARQ If the HARQ RTT is fixed, the HARQ is called synchronous HARQ; for example, if the HARQ RTT is 10 ms and the length of each subframe is lms, then after the downlink data is transmitted in the subframe 0 using the HARQ process 1, The HARQ process 1 must be used again in subframe 0 of the next frame structure, that is, the usage interval of the HARQ process is fixed.
  • Asynchronous HARQ If the HARQ RTT is not fixed, then this HARQ is called asynchronous. HARQ; that is, the interval of use of the HARQ process is not fixed.
  • the data transmission in the embodiment of the present invention is a method in which the HARQ multi-process is used, that is, the data is transmitted in turn through multiple HARQ processes, for example, the downlink data of the HARQ process 1 is transmitted in the subframe 0, and the HARQ process is transmitted in the subframe 1. Downstream data, etc.
  • FIG. 3 is a schematic flowchart of a method for transmitting a HARQ feedback according to an embodiment of the present invention.
  • the method may be performed by a primary base station. As shown in FIG. 3, the method includes:
  • the first communication device is in a downlink transmission scenario, the first communication device is a terminal, and the second communication device is a secondary base station. (As the embodiment of the present invention discusses HARQ feedback across base stations, only the secondary base station is considered. HARQ feedback); In the uplink transmission scenario, the first communication device is a secondary base station, and the second communication device is a terminal.
  • the HARQ feedback is feedback corresponding to the data received by the first communication device from the second communication device, and is used for feeding back information about the data received by the first communication device from the second communication device through the HARQ process, for example, feeding back the data.
  • the returned HARQ feedback may be ACK, indicating correct reception; if the data decoding is incorrect, the returned HARQ feedback may be NACK, indicating that the data is not correctly received.
  • the HARQ feedback may be returned to the second communication device via the primary base station, such that the second communication device accordingly determines whether the data needs to be retransmitted.
  • the HARQ process information used to identify the HARQ process and the HARQ feedback are transmitted to the second communications device.
  • the primary base station acquires HARQ process information for identifying a HARQ process for transmitting the data before transmitting the HARQ process information.
  • the second communication device when the second communication device sends data to the first communication device, it is sent by using a certain HARQ process; therefore, when the primary base station returns the HARQ feedback to the second communication device, the second communication device needs to enable the second communication device to know the The HARQ feedback corresponds to which data, and since the data is transmitted through a certain HARQ process, the second communication device knows which HARQ process the HARQ feedback corresponds to, that is, it can learn which data the HARQ feedback corresponds to. Therefore, the primary base station may send the HARQ process information to the second communication device, where the HARQ process information identifies the HARQ process that transmits the data.
  • the second communication device such as the secondary base station, itself knows which HARQ process is sent at a certain subframe of a certain frame structure, so the HARQ process information may also be corresponding to the HARQ process.
  • the secondary base station may determine which HARQ process is based on the subframe position; or the HARQ process information may be a HARQ process identifier, such as a HARQ process id.
  • the acquisition of specific HARQ process information will be described in detail in the following embodiments.
  • the second communication device may learn, according to the HARQ process information, which process the HARQ feedback is for, and determine, according to the HARQ feedback, whether to retransmit the data by using the HARQ process; for example, if the HARQ feedback is ACK, the second communication device can transmit new data through the HARQ process. If the HARQ feedback is NACK, the second communication device can retransmit the last data through the HARQ process.
  • the primary base station acquires an inter-station transmission delay between the secondary base station and the Inter-station transmission delay, determining a HARQ round-trip time RTT for the second communication device to transmit the data by using the HARQ process; and transmitting, to the second communication device, indication information for identifying the HARQ RTT, so that The second communication device sets the HARQ RTT according to the indication information.
  • the HARQ RTT set by the second communication device can take into account the delay of the inter-station transmission delay, and the HARQ feedback transmission in the cross-base station scenario can be well realized.
  • the indication information of the HARQ RTT sent by the primary base station to the second communication device may be in various forms:
  • the HARQ RTT may be sent directly to the second communication device such that the second communication device can increase the current number of HARQ processes according to the HARQ RTT until its current HARQ RTT is added to the HARQ RTT.
  • the number of the HARQ processes may be sent to the second communications device, where the number of the HARQ processes is determined according to the HARQ RTT, and the second communications device can increase the number of the current HARQ processes to the HARQ process according to the number of the HARQ processes. Quantity.
  • the primary base station may send the indication information of the HARQ RTT to the first communication device, so that the The first communication device adjusts the HARQ buffer corresponding to the HARQ process according to the indication information.
  • the mapping relationship between the HARQ process and the subframe position may be sent to the second communications device, where the mapping relationship is determined according to the HARQ RTT, so that the second communications device is configured according to the mapping. The relationship sets the HARQ process at a corresponding subframe position.
  • the mapping relationship sent by the primary base station may be represented by a subframe position of a subframe of the first HARQ process for transmitting the data, and a usage period of the first HARQ process.
  • the HARQ process information that is sent by the primary base station to the second communications device may further include: the identifier of the HARQ process, so that the second communications device directly learns the HARQ feedback according to the identifier. Corresponding data.
  • the HARQ process information may include a subframe position, where the subframe position includes: a subframe position where the HARQ feedback is located, or a HARQ feedback transmitted by the HARQ process. The corresponding subframe position where the data is located.
  • the HARQ feedback transmission method may be applicable to the uplink transmission and the downlink transmission.
  • the second communication device is the secondary base station, where the first The communication device is a terminal; when the data is uplink transmission data, the second communication device is a terminal, and the first communication device is a secondary base station.
  • the HARQ process information may further include: a cell identifier of the service cell corresponding to the HARQ process, so that the secondary base station can identify, according to the identifier, which cell data the HARQ feedback corresponds to.
  • the HARQ feedback transmission method in this embodiment implements the HARQ feedback transmission across the base station by forwarding the HARQ feedback to the second communication device by the primary base station.
  • FIG. 4 is a schematic flowchart of another embodiment of a method for transmitting HARQ feedback according to the present invention. The difference from the first implementation is that the method is performed by a second communication device. As shown in FIG. 4, the method includes:
  • the HARQ feedback is sent by the first communications device to the primary base station, and is used to feed back a situation in which the first communications device receives the data by using the HARQ process. 403. Determine, according to the HARQ feedback, whether to retransmit the data by using the HARQ process. For example, if the HARQ feedback is ACK, the second communication device can transmit new data through the HARQ process; if the HARQ feedback is NACK, the second communication device can retransmit the last data through the HARQ process.
  • the second communication device determines whether to retransmit the data according to the HARQ feedback forwarded by the primary base station, and implements HARQ feedback transmission across the base station.
  • the downlink transmission in LTE is taken as an example, and the first embodiment and the second embodiment are specifically described, and the primary base station is a macro station, and a cell under the macro base station is used.
  • the primary cell the secondary base station is a micro-station, and one cell under the micro-station is used as a secondary cell, and the terminal can perform carrier aggregation of the carriers of the two cells across the base station (that is, belong to different base stations).
  • the method is equally applicable to UMTS, WiMax, or other evolved systems.
  • FIG. 5 is a schematic diagram of signaling according to another embodiment of a method for transmitting HARQ feedback according to the present invention.
  • an asynchronous HARQ is taken as an example for detailed description of the foregoing embodiments.
  • the secondary base station side uses a certain HARQ process.
  • the time interval is not fixed. Usually, it waits until the HARQ feedback of the received data determines whether to retransmit the data or transmit the new data through the HARQ process.
  • the method may include:
  • the terminal adds a cell of the micro station as a secondary cell.
  • the terminal can use the conventional technology to increase the cell.
  • the macro station instructs the terminal to measure the signal quality of the carrier of a certain frequency.
  • the terminal measures the carrier of the frequency according to the indication, the terminal sends a parameter indicating the signal quality, such as the signal strength, to the macro station; the macro station determines according to the preset threshold. If the signal quality of the carrier satisfies the communication condition, the terminal is instructed to establish a connection with the carrier. The terminal then establishes a connection with the carrier.
  • the carrier is a carrier of a cell under the micro station
  • the terminal establishes a connection with the secondary cell under the micro station.
  • the micro station performs downlink data transmission to the terminal.
  • the downlink transmission data of the micro-station adopts the HARQ mode; for example, referring to FIG. 2, the micro-station can transmit the downlink data of the HARQ process 1 in the subframe 0 of a certain frame, and transmit the downlink data of the HARQ process 2 in the subframe 1 Wait.
  • the terminal sends the HARQ feedback to the macro station. After receiving the data sent by the micro-station, the terminal returns HARQ feedback to the micro-station, where the HARQ feedback is used to indicate whether the data has been correctly received, for example, ACK indicates correct reception, and NACK indicates that data decoding error is not correctly received, etc. .
  • the foregoing HARQ feedback returned by the terminal is sent to the macro station, because in the carrier aggregation technology, even in the case of cross-base stations, multiple cells participating in the aggregation include one primary cell and multiple secondary cells.
  • the primary cell is the primary cell under the macro station, and the HARQ feedback of the downlink transmission data of all the cells is sent to the macro station through the uplink transmission of the primary cell.
  • HARQ feedback is also forwarded to the microstation via the macro station.
  • the macro station obtains HARQ process information of the HARQ process.
  • the micro-station when the micro-station transmits data in the downlink, it is transmitted through a certain HARQ process; therefore, the macro station not only needs to forward the HARQ feedback of the terminal to the micro-station, but also needs to enable the micro-station to know Which HARQ feedback corresponds to which data is used to indicate which data reception result is correctly received or decoded incorrectly. Based on the above, in fact, the micro station needs to know which HARQ process the HARQ feedback corresponds to, and can determine the data transmitted by the HARQ process, that is, the data corresponding to the HARQ feedback.
  • the determination of the HARQ process may be represented by the subframe position corresponding to the HARQ process; as can be understood by referring to FIG. 2, for example, the HARQ process 1 in FIG. 2, the micro-station itself knows that it is sent in a certain subframe. Which process is the downstream data. For example, in subframe 0 of frame structure 0, downlink data for transmitting HARQ process 1; in subframe 1 of frame structure 0, downlink data for transmitting HARQ process 2, etc., these micro stations themselves are known; therefore, as long as The micro-station can be informed of the relevant subframe position of the HARQ process corresponding to the HARQ feedback, and the micro-station can learn the corresponding HARQ process according to the subframe position.
  • the subframe position may be: a subframe position where the HARQ feedback is located, or a subframe position where the data corresponding to the HARQ feedback is located.
  • the timing of using the HARQ process is usually limited. For example, after receiving the downlink transmission data of a certain HARQ process, the terminal is separated by three. The subframes are further subjected to HARQ feedback. For example, a base station performs downlink transmission in subframe 0. After receiving the data, the terminal may perform HARQ feedback in subframe 4; therefore, the macro station receives the HARQ feedback sent by the terminal.
  • the subframe position where the HARQ feedback is located for example, uplink transmission in a certain subframe, also according to the above.
  • the subframe position where the data corresponding to the HARQ feedback is located can also be inferred, as long as the macro station knows the time interval between the HARQ feedback and the downlink data transmission by the terminal.
  • the downlink subframes of all cells are aligned, and the specific frame number/subframe number difference between the base stations is different.
  • the base station can be known in advance; the subframe alignment here means that the transmission time of the subframe is the same.
  • the primary base station a and the secondary base station b all transmit a certain subframe at the same time, the difference is only that the primary base station a sends at the moment. It is the subframe 1 and the secondary base station b transmits the subframe 3 at this time.
  • the primary base station can calculate the subframe position of the feedback corresponding data in the micro station cell according to the HARQ feedback in the subframe position of the primary cell.
  • the subframe position in the embodiment refers to the subframe position in the micro-cell cell, not the primary base station, and there may be an offset between them, and the micro-station may also determine the pair on the self side according to the subframe position.
  • the subframe position should be in the HARQ process.
  • the subframe position may be referred to as HARQ process information.
  • the subframe position that the macro station submits to the micro station can be expressed as: 10* system frame number + subframe number; for example, ⁇ A/N bit, 10*SFN + subframe number (0..9) ⁇ ), where The A/N bit is used to indicate the HARQ feedback of the terminal to the micro-station, where A is ACK, indicating that it has been correctly received, N is NACK, indicating that it is not correctly received, and A/N indicates that the HARQ feedback is A or N; SFN represents the system frame number (for example, 0, 1, 2, etc.). For example, SFN is 0 for frame structure 0, and this is an example in which each frame structure includes 10 subframes.
  • the macro station transmits the HARQ process information and the HARQ feedback to the micro station.
  • the HARQ process information may further include: a cell identifier of the serving cell corresponding to the HARQ process.
  • the terminal when the terminal transmits a certain HARQ feedback to the macro station, the terminal carries the carrier identifier of the data corresponding to the HARQ feedback, that is, the micro station transmits the carrier identifier of the data through the downlink, and the carrier identifier can also pass the HARQ feedback.
  • the occupied resource location implicit indication; the macro station is the primary base station in the carrier aggregation mode, and plays a controlling role, so it is the cell to which each carrier participating in the aggregation belongs.
  • the macro station may also send the cell identifier of the cell where the carrier of the downlink transmission data is located to the micro-station, so that the micro-station knows which carrier the HARQ feedback is.
  • the feedback of the data especially when the macro station needs to submit the downlink transmission HARQ of the multiple secondary cells under the micro station to the micro station, the carrying the cell identifier can make the micro station know the downlink carrier corresponding to the HARQ feedback more clearly.
  • the cell identifier may be a Cell Index or may be A bitmap (bitmap).
  • the micro station determines, according to the HARQ feedback, whether to retransmit the data by using a HARQ process.
  • the micro station may determine, according to the HARQ process information sent by the macro station, for example, the subframe position, which HARQ feedback corresponds to which data or which HARQ process corresponds to.
  • the HARQ process information is the subframe position where the HARQ feedback is located, and the micro station may infer the HARQ process corresponding to the HARQ feedback according to the subframe position where the HARQ feedback is located; or, when the HARQ process information is the downlink corresponding to the HARQ feedback,
  • the micro station can determine the corresponding HARQ process according to the subframe position of the downlink data transmission; for example, if the subframe position is: (10*1 + 5), indicating that it is the 15th subframe, micro The station can determine which HARQ process data it is transmitting at the position of the 15th subframe.
  • the micro station can determine whether to perform downlink data retransmission on the corresponding HARQ process according to the received HARQ feedback. For example, if the HARQ feedback is ACK, indicating that the downlink transmission data of the micro station has been correctly received by the terminal, the micro station may transmit new data through the HARQ process; or, if the HARQ feedback is NACK, the micro station may pass the HARQ. The process retransmits the original data.
  • the micro station waits until the HARQ feedback of the received data determines whether to retransmit the data or transmit new data through the HARQ process, thereby implementing HARQ across the base station. Feedback.
  • FIG. 6 is a schematic diagram of signaling according to another embodiment of a method for transmitting HARQ feedback according to the present invention.
  • This embodiment uses a synchronous HARQ as an example to describe the foregoing embodiments.
  • the synchronous HARQ is used.
  • the difference from the asynchronous HARQ is that the asynchronous HARQ is not fixed because the HARQ RTT is not fixed, so the micro station can determine the use of the HARQ process when receiving the HARQ feedback, and there is no time limit for waiting for the HARQ process; and the HARQ RTT of the synchronous HARQ is fixed. That is, the usage period of the HARQ process is fixed.
  • the HARQ process 1 needs to be used again after 8 ms.
  • the prior art HARQ RTT will no longer be applicable because there is an inter-station transmission delay (such as the time at which the macro station transmits HARQ feedback to the micro-station) because it is for the same base station, The problem of transmission delay between stations.
  • the existing HARQ RTT is actually increased on the basis of considering the inter-station transmission delay to conform to the actual situation of transmission across the base station; and, the macro station can be executed by the macro station.
  • a new HARQ RTT is obtained according to the inter-station transmission delay, and the HARQ RTT indication information is sent to the micro station, so that the micro station resets the HARQ RTT according to the indication information, which is equivalent to resetting the HARQ process.
  • Corresponding relationship with the subframe determines which process is transmitted in which subframe, and then performs downlink data transmission.
  • the synchronous HARQ of this embodiment is increased for the HARQ RTT, and the amplification is expanded.
  • the method may include:
  • the macro station obtains the inter-station transmission delay between the stations.
  • the inter-station transmission delay is usually a parameter that can be acquired when a communication connection is established between the macro station and the micro station.
  • the cell of the micro station may not participate in the carrier aggregation of the terminal; that is, the acquisition time of the parameter.
  • This embodiment is not limited. For example, it may be acquired before the next 602, and after the occurrence of 602, the parameter is used to perform the related processing described later.
  • the terminal adds a cell of the micro station as a secondary cell.
  • the macro station determines, according to the inter-station transmission delay, a round-trip time HARQ RTT that the micro-station uses the HARQ process to transmit data, and indication information used to identify the HARQ RTT.
  • the terminal adds the cell of the micro station as the secondary cell, and the macro station knows that the macro station can know that the terminal and the cell of the micro station perform carrier aggregation; therefore, the macro station starts according to 601. Obtain the inter-station transmission delay and determine the HARQ RTT of the station.
  • the HARQ RTT of the micro-station usually has a value specified by the protocol, for example, 8 ms.
  • the micro-station uses the predetermined HARQ RTT to schedule the use of the HARQ process.
  • the macro station determines a new HARQ RTT, for example, 10 ms, which is increased compared to the previous one, and is actually equivalent to the original HARQ RTT. Plus the transmission delay between stations.
  • the HARQ RTT can be directly transmitted to the micro station, and the micro station can perform the RTT change processing accordingly; or the macro station can also directly transmit the HARQ RTT. Rather, it can represent other information about the RTT so that the micro-station can also extend its own RTT to the new RTT calculated by the macro station based on the other information. Therefore, in this embodiment, the HARQ RTT or other information and the like described above are collectively referred to as indication information for identifying the HARQ RTT.
  • the indication information may include: HARQ RTT, so that the micro station can treat it as The number of previous HARQ processes is increased until the current HARQ RTT of the micro-station is extended to the HARQ RTT of the indication information, and can also be understood as increasing the number of HARQ processes to fully utilize the newly added HARQ RTT part to improve throughput. .
  • the indication information may also be the number of HARQ processes, and the number of HARQ processes may be the number of HARQ processes updated by the macro station according to the adjusted HARQ RTT.
  • the downlink data transmission of each HARQ process occupies one subframe, one subframe is lms, the downlink transmission of HARQ process 1 is performed in subframe 0, the downlink transmission of HARQ process 2 is performed in subframe 1, and the like, if the original HARQ RTT If it is 8ms, there are 8 HARQ processes. The 8 processes are used once in a cycle. If the new HARQ RTT calculated by the macro station is 10ms, then 2ms is added, and 2 HARQ processes can be added. The current number of processes is 10 HARQ processes.
  • the micro-station can perform the increase of the number of HARQ processes by itself; but the macro station itself can directly determine the number of HARQ processes according to the HARQ RTT, and inform the number of the process. station.
  • the macro station sends indication information for identifying the HARQ RTT to the initiating station.
  • the indication information is the foregoing HARQ RTT or the number of HARQ processes.
  • the initiating station resets the HARQ RTT according to the indication information.
  • the micro-station can adjust the current number of HARQ processes to the HARQ RTT indicated by the macro station, or adjust the current HARQ process number to the macro station.
  • the number of HARQ processes can be adjusted.
  • the macro station sends the indication information used to identify the HARQ RTT to the terminal.
  • the step may be performed simultaneously with the 604, as long as the terminal receives the downlink transmission data of the micro station.
  • the terminal since the number of processes of the HARQ is changed, the terminal needs to know the new HARQ RTT; because, when the terminal receives the downlink transmission data of the micro-station, the terminal transmits the data transmitted by each HARQ process separately.
  • Set a corresponding HARQ buffer that is, the number of HARQ buffers is equal to the number of HARQ processes. Therefore, the macro station needs to inform the terminal of the number of HARQ RTT or HARQ processes, so that the terminal according to the HARQ buffer. The number is increasing.
  • the terminal adds a HARQ buffer corresponding to the HARQ process according to the indication information.
  • the indication information is a HARQ RTT
  • the terminal will determine according to the RTT The number of new HARQ processes is determined, and the HARQ buffer corresponding to the HARQ process is added correspondingly. If the indication information is the number of HARQ processes, the terminal will directly increase the HARQ buffer accordingly.
  • the micro station performs downlink data transmission to the terminal.
  • the terminal sends HARQ feedback to the macro station.
  • the macro station obtains HARQ process information of the HARQ process.
  • the HARQ process information is still the subframe position, for example, the subframe position where the HARQ feedback is located, or the subframe position where the data corresponding to the HARQ feedback is located.
  • the macro station may also identify the HARQ process of the HARQ process, for example, HARQ process 0 as HARQ process information. Because the correspondence between the process and the position of the subframe is fixed, the macro station can determine the HARQ process number corresponding to the HARQ process according to the received subframe.
  • the HARQ process information may also include: a cell identifier of the service cell corresponding to the HARQ process.
  • the macro station transmits the HARQ process information and the HARQ feedback to the initiating station.
  • the micro station determines, according to the HARQ feedback, whether to retransmit the data by using a HARQ process. Therefore, based on the synchronous HARQ of the embodiment, the macro station adjusts the number of RTT or HARQ processes according to the inter-station delay and sends the number to the micro-station, and the micro-station combines the received HARQ feedback to decide whether to retransmit the data or transmit the new one through the HARQ process. Data, implementing HARQ feedback across base stations.
  • FIG. 7 is a schematic diagram of signaling according to still another embodiment of a method for transmitting HARQ feedback according to the present invention.
  • the difference between the implementation of the present embodiment is that the macro station in the embodiment increases the HARQ RTT, and the number of HARQ processes is unchanged.
  • the number of HARQ processes is only changed by the HARQ RTT, which is the time interval between two uses of each HARQ process.
  • the method may include:
  • the macro station obtains an inter-station transmission delay between the stations.
  • the terminal adds a cell of the micro station as a secondary cell.
  • the macro station determines, according to the inter-station transmission delay, a round-trip time HARQ RTT that the micro-station uses the HARQ process to transmit data, and indication information used to identify the HARQ RTT.
  • the indication information determined by the macro station according to the HARQ RTT is a mapping relationship between the HARQ process and the subframe position.
  • the mapping relationship may be represented by the first HARQ process.
  • the subframe of the first HARQ process is used as an example to describe how to represent the mapping relationship.
  • the specific implementation is not limited thereto.
  • other HARQ processes may be used to represent the mapping relationship.
  • FIG. 8 is a schematic diagram of a HARQ process setting in another embodiment of a method for transmitting HARQ feedback according to the present invention. It is assumed that a micro-station has eight HARQ processes, and the process identifier of the processes (ie, the HARQ process id) may be 0 ⁇ 7.
  • the row of boxes corresponding to the HARQ process id shown in FIG. 8 represents a subframe, for example, fl represents one of the subframes, and the length of each subframe is 1 ms; the HARQ process id corresponds to the subframe, and the subframe is represented in the subframe.
  • the HARQ process corresponding to the HARQ process id is used, for example, fl corresponds to the HARQ process idO, indicating that the micro station transmits downlink data through the HARQ process 0. And assuming that the initial HARQ RTT is 8ms, then the HARQ process 0 should be used again at the location of f2.
  • the terminal after receiving the downlink data transmitted by the HARQ process 0 in the subframe 0, that is, the location of the frame, the terminal considers the processing delay of the terminal, and the terminal usually returns the HARQ feedback at the position of the subframe 4;
  • the HARQ feedback is directly sent to the micro-station.
  • the micro-station 4 After the micro-station 4 receives the HARQ feedback, the micro-station may go through the processing delay of the micro-station and may be at the position again.
  • retransmitting data or transmitting new data also satisfies the requirement that the initial HARQ RTT is 8 ms.
  • the HARQ feedback is forwarded by the macro station to the micro station.
  • the micro station may receive the HARQ feedback at the position of f4, plus micro The station handles the delay factor (usually the processing delay of not less than 4ms).
  • the micro-station may use the HARQ process 0 again at the location of f5, so that the HARQ RTT may be extended from 8ms to 16ms.
  • the macro station instructs the micro station to increase the number of HARQ processes up to the HARQ RTT, that is, as shown in FIG. 8, and increases the corresponding eight HARQs from 8 subframes up to f6.
  • the process until the next subframe that uses HARQ process 0 is f5.
  • the period from the time to the f6 is idle, the number of HARQ processes is no longer increased, and the first eight HARQ processes are kept unchanged; only the usage period of the HARQ process is increased compared with the original, for example, the HARQ process.
  • 0 re-use time is originally f2 (when RTT is 8ms), and this The reuse time of the embodiment HARQ process 0 is changed to f5 because the current HARQ RTT is already 16 ms.
  • mapping relationship between the HARQ process and the subframe position changes to meet the constraints of the new HARQ RTT. For example, the mapping
  • the interval is also 16ms.
  • Other HARQ processes may also be used at intervals of 1 ms after 1 ms of the corresponding subframe of HARQ process 0, and the same HARQ RTT is also 16 ms.
  • the macro station sends indication information for identifying the HARQ RTT to the initiating station.
  • the indication information is a mapping relationship between the HARQ process and the subframe position.
  • the indication message may not be sent to the terminal, because the number of processes does not change, and the terminal does not need to adjust the HARQ buffer.
  • the micro station resets the HARQ RTT according to the indication information.
  • the micro-station can set the correspondence between the HARQ process and the subframe according to the mapping relationship, for example, the downlink data of the HARQ process 0 is transmitted in the subframe fl, and the downlink data of the HARQ process 4 is transmitted in the subframe ⁇ . , use the HARQ process 0 to transmit downlink data and the like again at f5.
  • the macro station sends the HARQ RTT to the terminal.
  • this step is optional; and, the step can also be performed with 704.
  • the synchronous HARQ mode of the embodiment does not need to carry the corresponding HARQ process identifier when the downlink station transmits data, and the terminal side can know which HARQ process the data is, and place the data into the process.
  • Corresponding HARQ buffer For example, the HARQ process uses the HARQ RTT to be fixed. The terminal itself determines that after passing through a HARQ RTT, it stores the data in the buffer corresponding to the original HARQ process. The correspondence between the HARQ process and the subframe position. Relationship, the terminal does not need to know, at this time, the terminal does not care about the HARQ process number corresponding to a certain subframe, it only needs to know which buffer the data of this subframe should be placed in.
  • the data received by a certain subframe n can be put into any buffer, but once placed, subsequent subframes (n + 16*k) of the data must be placed in this buffer. Therefore, after changing the HARQ RTT in this embodiment, it is necessary to inform the terminal, so that the terminal can determine the HARQ process corresponding to the data according to the new HARQ RTT.
  • the number of the HARQ process on the terminal side may be different from the HARQ process number of the initiating station at this time, but this does not prevent the two parties from distinguishing different HARQ processes for data transmission and reception/cache.
  • the synchronous HARQ mode of the embodiment carries the corresponding HARQ process identifier when the micro-station transmits data in the downlink, and the terminal side knows which HARQ process the data is based on the carried HARQ process identifier, and This data is placed in the HARQ buffer corresponding to the process.
  • the micro station performs downlink data transmission to the terminal.
  • the terminal sends HARQ feedback to the macro station.
  • the macro station obtains HARQ process information of the HARQ process.
  • the macro station since the macro station determines the correspondence between the subframe position and the HARQ process according to the new HARQ RTT, the macro station can determine, according to the subframe position, which HARQ the received HARQ feedback corresponds to. Processed.
  • the subframe position includes: a subframe position where the HARQ feedback is located, or a subframe position where the data corresponding to the HARQ feedback transmitted by the HARQ process is located.
  • the subframe position where the HARQ feedback received by the macro station is located is ⁇ , and the macro station may return the processing delay of the HARQ feedback according to the terminal (the delay is usually preset, for example, the protocol is specified. Therefore, the macro station will also know), and it is inferred that the data corresponding to the HARQ feedback should be the downlink data sent in the subframe fl.
  • the macro station can further know that the micro station transmits the downlink data through the HARQ process 0 according to the mapping relationship determined in 703 (because the micro station sets the HARQ process according to the mapping relationship sent by the macro station, The macro station can know the correspondence between the subframe of the micro station and the HARQ process, so as to determine that the HARQ feedback corresponds to the HARQ process 0. Therefore, the macro station can use the HARQ process identifier of the HARQ process, for example, the HARQ process 0 described above as the HARQ process information.
  • the macro station may still use the subframe position as the HARQ process information.
  • the HARQ process information may further include: a cell identifier of the serving cell corresponding to the HARQ process.
  • the macro station transmits the HARQ process information and the HARQ feedback to the micro station.
  • the micro station determines, according to the HARQ feedback, whether to retransmit the data by using a HARQ process.
  • Synchronous HARQ in this embodiment is a method in which the number of HARQ processes is constant, still along With the current number of HARQ processes, only the HARQ RTT, that is, the time interval of two uses of each HARQ process, is changed, so that HARQ feedback across base stations can be achieved.
  • the macro station receives the HARQ feedback of the downlink transmission of the micro-station and delivers the result to the micro-station.
  • the method in the embodiment of the present invention is also applicable to the HARQ of the micro-station receiving the downlink transmission of the macro station. After the feedback is delivered to the macro station, or the micro station receives the HARQ feedback of the downlink transmission of the other micro station and submits the scenario to other micro stations, that is, when the carrier aggregation scenario of the cross-base station, whether it is a macro station or a micro station, One of the at least two base stations is selected as the primary base station, and the other is used as the secondary base station.
  • the HARQ feedback corresponding to the secondary base station cell is uplinked to the primary base station by the primary cell under the primary base station, and then forwarded by the primary base station.
  • the embodiment of the present invention is not limited to the secondary base station, and the primary base station or the secondary base station is a macro station or a micro station.
  • the terminal side needs to increase the HARQ buffer accordingly, and when only the HARQ RTT is increased and the number of HARQ processes is constant. In this case, the terminal side also basically does not need to change, the terminal cost.
  • CSI channel state indication
  • SR scheduling request
  • FIG. 9 is a schematic structural diagram of an embodiment of a base station according to the present invention.
  • the base station may perform a method according to any embodiment of the present invention, where the base station is, for example, a primary base station or other similar device having cross-station coordination function; as shown in FIG.
  • the base station may include: a receiving unit 91 and a sending unit 92.
  • the receiving unit 91 is configured to receive a hybrid automatic repeat request HARQ feedback sent by the first communications device, where the HARQ feedback is used to feed back the first communications device from the first The data received by the communication device through the HARQ process;
  • the sending unit 92 is configured to transmit the HARQ process information used to identify the HARQ process and the HARQ feedback to the second communications device, so that the second communications device determines whether to pass the HARQ feedback according to the HARQ feedback.
  • the HARQ process retransmits the data.
  • the base station may further include: a round trip time indicating unit 93; the round trip time indication The unit 93 includes: an inter-station delay acquisition sub-unit 931, a round-trip time determination sub-unit 932, an indication information determination sub-unit 933, and an indication information transmission sub-unit 934;
  • the inter-station delay acquisition sub-unit 931 is configured to acquire an inter-station transmission delay between the first communication device and the second communication device when the second communication device is a secondary base station;
  • a round-trip time determining sub-unit 932 configured to determine, according to the inter-station transmission delay, a HARQ round-trip time RTT that the second communications device uses the HARQ process to transmit the data;
  • the indication information determining subunit 933 is configured to determine, according to the HARQ RTT, indication information used to identify the HARQ RTT;
  • the indication information sending subunit 934 is configured to send the indication information to the second communication device, so that the second communication device sets the HARQ RTT according to the indication information.
  • the indication information determined by the indication information determining sub-unit 933 includes at least one of the following: the HARQ RTT; the number of HARQ processes; and the mapping relationship between the HARQ process and the subframe position.
  • the sending unit 92 is specifically configured to obtain an identifier of the HARQ process, and transmit the identifier of the HARQ process and the HARQ feedback to the second communications device.
  • the sending unit 92 is specifically configured to acquire a subframe position corresponding to the HARQ process, and transmit the subframe position and the HARQ feedback to the second communications device, where the subframe position And including: a subframe position where the HARQ feedback is located, or a subframe position where the HARQ process transmits the HARQ feedback corresponding to the data.
  • the base station in this embodiment implements the cross-base station by forwarding the HARQ feedback sent by the base station from the first communication device and the HARQ process information of the HARQ process for identifying the transmission data to the second communication device belonging to another base station.
  • the HARQ feedback is transmitted, and the other base station can determine whether to retransmit the data according to the HARQ feedback and the HARQ process information.
  • the communication device can perform the method of any embodiment of the present invention.
  • the communication device is a base station in a downlink data transmission scenario and a terminal in an uplink data transmission scenario.
  • the communication device may include: a sending unit 1001, a receiving unit 1002, and a processing unit 1003;
  • the sending unit 1001 is configured to request the HARQ process by the hybrid automatic repeat request to the first communications device send data;
  • the receiving unit 1002 is configured to receive, by the primary base station, HARQ process information for identifying the HARQ process, and HARQ feedback corresponding to the data, where the HARQ feedback is sent by the first communications device to the primary base station. And for feeding back the situation that the first communications device receives the data through the HARQ process;
  • the processing unit 1003 is configured to determine, according to the HARQ feedback, whether to retransmit the data by using the HARQ process.
  • the communication device further includes: a round-trip time setting unit 1004, configured to receive indication information used by the primary base station to identify a HARQ round-trip time RTT, and set to use the HARQ process transmission according to the indication information The HARQ RTT of the data, where the indication information is determined by the primary base station according to an inter-station transmission delay between a primary base station and a secondary base station.
  • a round-trip time setting unit 1004 configured to receive indication information used by the primary base station to identify a HARQ round-trip time RTT, and set to use the HARQ process transmission according to the indication information The HARQ RTT of the data, where the indication information is determined by the primary base station according to an inter-station transmission delay between a primary base station and a secondary base station.
  • the indication information includes: the HARQ RTT; the round-trip time setting unit 1004 is specifically configured to increase the local current HARQ process quantity until the current HARQ RTT is added to the HARQ RTT.
  • the indication information includes: a number of HARQ processes, where the number of the HARQ processes is determined by the primary base station according to the HARQ RTT; and the round-trip time setting unit 1004 is specifically configured to increase the number of local current HARQ processes. To the number of HARQ processes.
  • the indication information includes: a mapping relationship between a HARQ process and a subframe position, where the mapping relationship is determined by the primary base station according to the HARQ RTT; and the round-trip time setting unit 1004 is specifically configured to use The mapping relationship sets the HARQ process at the corresponding subframe position.
  • the receiving unit is specifically configured to: receive an identifier of the HARQ process sent by the primary base station, and the HARQ feedback; or receive a subframe position corresponding to the HARQ process sent by the primary base station, and the The subframe position includes: a subframe position where the HARQ feedback is located, or a subframe position where the data corresponding to the HARQ feedback transmitted by the HARQ process is located.
  • the communication device is a terminal or a secondary base station.
  • the communication device of this embodiment receives the HARQ feedback of the HARQ of the first communication device forwarded by the primary base station, and can determine whether to retransmit the data according to the HARQ feedback and the HARQ process information.
  • Figure 11 is a diagram showing the physical structure of an embodiment of a base station according to the present invention.
  • the base station can perform the method of any embodiment of the present invention, such as a primary base station or other similar device having cross-station coordination function.
  • the base station may include: a receiver 1101 and a transmitter 1102.
  • the receiver 1101 is configured to receive hybrid automatic repeat request (HARQ feedback) sent by the first communications device, where the HARQ feedback is used for feedback. Describe the data received by the first communication device from the second communication device through the HARQ process;
  • HARQ feedback hybrid automatic repeat request
  • the transmitter 1102 is configured to: transmit the HARQ process information and the HARQ feedback used to identify the HARQ process to the second communications device, so that the second communications device determines, according to the HARQ feedback, whether the The HARQ process retransmits the data.
  • the base station in this embodiment further includes: a processor 1103, configured to acquire an inter-station transmission delay between the first communication device and the second communication device when the second communication device is a secondary base station Determining, according to the inter-station transmission delay, a HARQ round-trip time RTT for the second communication device to use the HARQ process to transmit data; and determining indication information for identifying the HARQ RTT according to the HARQ RTT;
  • the transmitter 1102 is further configured to send the indication information that identifies the HARQ RTT to the second communications device, so that the second communications device sets the HARQ RTT according to the indication information.
  • the indication information includes at least one of the following: the HARQ RTT; a number of HARQ processes; and a mapping relationship between the HARQ process and a subframe position.
  • the processor 1103 is further configured to obtain an identifier of the HARQ process, where the transmitter 1102 is configured to transmit the identifier of the HARQ process and the HARQ feedback to the second communications device.
  • the processor 1103 is further configured to acquire a subframe position corresponding to the HARQ process, where the transmitter 1102 is configured to: transmit the subframe position and the HARQ feedback to the second communications device;
  • the subframe position includes: a subframe position where the HARQ feedback is located, or a subframe position where the data is located; and the HARQ process information includes the subframe position.
  • the base station in this embodiment implements the cross-base station by forwarding the HARQ feedback sent by the base station from the first communication device and the HARQ process information of the HARQ process for identifying the transmission data to the second communication device belonging to another base station.
  • the HARQ feedback is transmitted, and the other base station can determine whether to retransmit the data according to the HARQ feedback and the HARQ process information.
  • FIG. 12 is a structural diagram of an embodiment of a communication device according to the present invention.
  • the communication device can perform the method of any embodiment of the present invention.
  • the communication device is a base station in a downlink data transmission scenario and a terminal in an uplink data transmission scenario.
  • the communication device may include: a transmitter 1201, a receiver 1202, and a processor 1203;
  • a transmitter 1201 configured to send data to the first communications device by using a hybrid automatic repeat request HARQ process
  • the receiver 1202 is configured to receive, by the primary base station, HARQ process information for identifying the HARQ process, and HARQ feedback corresponding to the data, where the HARQ feedback is sent by the first communications device to the primary base station. And for feeding back a situation in which the first communications device receives the data through the HARQ process;
  • the processor 1203 is configured to determine, according to the HARQ feedback, whether to retransmit the data by using the HARQ process.
  • the receiver 1202 is further configured to receive, by the primary base station, indication information for identifying a HARQ round-trip time RTT, where the indication information is that the primary base station is configured according to an interval between the primary base station and the secondary base station.
  • the transmission delay is determined;
  • the processor 1203 is further configured to set, according to the indication information, the HARQ RTT that uses the HARQ process to transmit the data.
  • the processor 1203 is specifically configured to: when the indication information includes the HARQ RTT, increase a local current HARQ process quantity until the current HARQ RTT is added to the
  • the processor 1203 is specifically configured to: when the indication information includes the number of HARQ processes, increase the number of local current HARQ processes to the number of the HARQ processes.
  • the processor 1203 is specifically configured to: when the indication information includes a mapping relationship between the HARQ process and the subframe position, set the HARQ process to the corresponding subframe position according to the mapping relationship.
  • the receiver 1202 is specifically configured to: receive an identifier of the HARQ process and the HARQ feedback sent by the primary base station; or receive a subframe corresponding to the HARQ process sent by the primary base station Location and the HARQ feedback; wherein the subframe position includes: The subframe position where the HARQ feedback is located, or the subframe position where the HARQ process transmits data corresponding to the HARQ feedback.
  • the communication device is a terminal or a secondary base station.
  • the communication device of this embodiment receives the HARQ feedback of the HARQ of the first communication device forwarded by the primary base station, and can determine whether to retransmit the data according to the HARQ feedback and the HARQ process information.
  • the method includes the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本发明提供一种HARQ反馈的传输方法和装置,其中方法包括:接收第一通讯设备发送的HARQ反馈,所述HARQ反馈用于反馈所述第一通讯设备从第二通讯设备通过HARQ进程接收的数据情况;将用于标识传输所述数据的HARQ进程的所述HARQ进程信息和HARQ反馈传输至所述第二通讯设备,以使得所述第二通讯设备根据所述HARQ反馈判断是否通过所述HARQ进程重传所述数据。本发明实现了跨基站的HARQ反馈的传输。

Description

HARQ反馈的传输方法和装置
技术领域
本发明涉及通信技术, 尤其涉及一种混合自动重传请求 ( hybrid automatic repeat request , 简称: HARQ )反馈的传输方法和装置。 背景技术
载波聚合技术是为了提升终端的吞吐量而釆用的技术, 例如, 长期演进 ( long term evolution, 简称: LTE ) 系统中的载波聚合技术支持终端同时与 多个小区进行数据传输, 在多个载波上同时传输, 从而提升传输带宽。
当前的载波聚合技术只支持同一个基站下的小区的聚合, 即参与聚合的 多个小区是属于同一个基站的, 并且分为主小区和辅小区。 为了保障通信的 可靠性, 终端与各小区釆用 HARQ技术, 比如, 基站可以通过某个小区的载 波以 HARQ方式将数据下行传输至终端。 例如, 该下行传输可以釆用 HARQ 多进程的方式进行, 终端在接收到通过某个 HARQ进程传输的下行数据后, 需要向基站返回 HARQ反馈, 该 HARQ反馈例如是 ACK (表示正确接收)、 NACK (表示未正确接收)等, 以使得基站根据该 HARQ反馈确定再次使用该 HARQ进程重传数据(未正确接收时)或者传输新的数据(正确接收时) 。 对配置了载波聚合的终端, 所有参与聚合的各小区的用于下行数据传输的 HARQ反馈一般是通过主小区的上行链路发送给基站的。
目前存在的问题是, 随着通信技术的发展, 未来有可能出现跨基站的载 波聚合, 即把不同基站下的多个小区配置给一个终端, 以进一步提升终端的 吞吐量, 但是当前并没有跨基站场景下的 HARQ反馈的传输方法。 发明内容
本发明提供一种 HARQ反馈的传输方法和装置, 以实现跨基站时的 HARQ反馈的传输。
本发明的第一方面是提供一种 HARQ反馈的传输方法, 包括:
接收第一通讯设备发送的 HARQ反馈,所述 HARQ反馈用于反馈所述第 一通讯设备从第二通讯设备通过 HARQ进程接收的数据情况; 将用于标识所述 HARQ进程的 HARQ进程信息和所述 HARQ反馈传输 至所述第二通讯设备, 以使得所述第二通讯设备根据所述 HARQ反馈判断是 否通过所述 HARQ进程重传所述数据。
在第一种可能的实现方式中, 还包括: 当所述第一通讯设备或所述第二 通讯设备为辅基站时, 获取与所述辅基站之间的站间传输时延; 根据所述站 间传输时延, 确定所述第二通讯设备使用所述 HARQ进程传输所述数据的 HARQ往返时间 RTT; 向所述第二通讯设备发送用于标识所述 HARQ RTT 的指示信息, 以使得所述第二通讯设备根据所述指示信息设定所述 HARQ RTT。
结合第一方面的第一种可能的实现方式, 在第二种可能的实现方式中, 所述向所述第二通讯设备发送用于标识所述 HARQ RTT的指示信息, 包括: 向所述第二通讯设备发送所述 HARQ RTT, 以使得所述第二通讯设备增加当 前 HARQ进程数量直至将所述第二通讯设备的当前 HARQ RTT增加至所述 HARQ RTT。
结合第一方面的第一种可能的实现方式, 在第三种可能的实现方式中, 所述向所述第二通讯设备发送用于标识所述 HARQ RTT的指示信息, 包括: 向所述第二通讯设备发送 HARQ进程数量,所述 HARQ进程数量是根据所述 HARQ RTT确定的,以使得所述第二通讯设备增加当前 HARQ进程数量至所 述 HARQ进程数量。
结合第一方面的第一种可能的实现方式、 第二种可能的实现方式或第三 种可能的实现方式, 在第四种可能的实现方式中, 还包括: 将所述指示信息 发送至所述第一通讯设备, 以使得所述第一通讯设备根据所述指示信息调整 与所述 HARQ进程对应的 HARQ緩冲区。
结合第一方面的第一种可能的实现方式, 在第五种可能的实现方式中, 所述向所述第二通讯设备发送用于标识所述 HARQ RTT的指示信息, 包括: 向所述第二通讯设备发送所述 HARQ进程与子帧位置的映射关系, 所述映射 关系是根据所述 HARQ RTT确定的,以使得所述第二通讯设备根据所述映射 关系将所述 HARQ进程设置在对应的子帧位置。
结合第一方面的第五种可能的实现方式, 在第六种可能的实现方式中, 以及所述首个 HARQ进程的使用周期表示。
结合第一方面的第二种可能的实现方式至第六种可能的实现方式中的任 意一种,在第七种可能的实现方式中,所述 HARQ进程信息包括:所述 HARQ 进程的标识。
结合第一方面、 第一方面的第一种可能的实现方式至第一方面的第六种 可能的实现方式中的任意一种可能的实现方式,在第八种可能的实现方式中, 所述 HARQ进程信息包括子帧位置,所述子帧位置包括: 所述 HARQ反馈所 在的子帧位置、或者所述 HARQ进程传输的 HARQ反馈对应的所述数据所在 的子帧位置。
结合第一方面、 第一方面的第一种可能的实现方式、 第二种可能的实现 方式、 第三种可能的实现方式、 第四种可能的实现方式、 第五种可能的实现 方式、 第六种可能的实现方式、 第七种可能的实现方式或第八种可能的实现 方式, 在第九种可能的实现方式中, 当所述数据为下行传输的数据时, 所述 第二通讯设备为辅基站, 所述第一通讯设备为终端; 当所述数据为上行传输 的数据时, 所述第二通讯设备为终端, 所述第一通讯设备为辅基站。
结合第一方面、 或者第一方面的上述任意一种可能的实现方式, 所述 HARQ进程信息还包括: 所述 HARQ进程对应的服务小区的小区标识。
本发明的第二方面是提供一种 HARQ反馈的传输方法, 包括:
通过 HARQ进程向第一通讯设备发送数据;
接收主基站发送的用于标识所述 HARQ进程的 HARQ进程信息、以及对 应所述数据的 HARQ反馈,所述 HARQ反馈是所述第一通讯设备发送至所述 主基站的, 且用于反馈所述第一通讯设备通过所述 HARQ进程接收所述数据 的情况;
根据所述 HARQ反馈判断是否通过所述 HARQ进程重传所述数据。 在第一种可能的实现方式中, 还包括: 接收所述主基站发送的用于标识 HARQ往返时间 RTT的指示信息, 所述指示信息是所述主基站根据所述主 基站与辅基站之间的站间传输时延确定的; 根据所述指示信息设定使用所述 HARQ进程传输数据的所述 HARQ RTT。
结合第二方面的第一种可能的实现方式, 在第二种可能的实现方式中, 所述指示信息包括: 所述 HARQ RTT; 所述根据所述指示信息设定使用所述 HARQ进程传输数据的所述 HARQ RTT, 包括: 根据所述 HARQ RTT, 增加 本地的当前 HARQ进程数量直至将当前 HARQ RTT增加至所述 HARQ RTT。
结合第二方面的第一种可能的实现方式, 在第三种可能的实现方式中, 所述指示信息包括: HARQ进程数量, 所述 HARQ进程数量是所述主基站根 据所述 HARQ RTT确定的; 所述根据所述指示信息设定使用所述 HARQ进 程传输数据的所述 HARQ RTT, 包括: 根据所述 HARQ进程数量, 增加本地 的当前 HARQ进程数量至所述 HARQ进程数量。
结合第二方面的第一种可能的实现方式, 在第四种可能的实现方式中, 所述指示信息包括: HARQ进程与子帧位置的映射关系, 所述映射关系是所 述主基站根据所述 HARQ RTT确定的;所述根据所述指示信息设定使用所述 HARQ进程传输数据的所述 HARQ RTT, 包括: 根据所述 HARQ进程与子帧 位置的映射关系将 HARQ进程设置在对应的子帧位置。
结合第二方面的第一种可能的实现方式至第二方面的第四种可能的实现 方式中的任意一种可能的实现方式, 在第五种可能的实现方式中, 所述接收 主基站发送的用于标识 HARQ进程的 HARQ进程信息, 包括:接收所述主基 站发送的所述 HARQ进程的标识。
结合第二方面、 第二方面的第一种可能的实现方式、 第二方面的第二种 可能的实现方式、 第二方面的第三种可能的实现方式或第二方面的第四种可 能的实现方式, 在第六种可能的实现方式中, 所述接收主基站发送的用于标 识 HARQ进程的 HARQ进程信息,包括:接收所述主基站发送的与所述 HARQ 进程对应的子帧位置,所述子帧位置包括:所述 HARQ反馈所在的子帧位置、 或者所述数据所在的子帧位置。
结合第二方面、 或第二方面的上述任意一种可能的实现方式, 在第七种 可能的实现方式中, 当所述数据为下行传输的数据时, 所述第一通讯设备为 终端; 当所述数据为上行传输的数据时, 所述第一通讯设备为辅基站。
结合第二方面、 或第二方面的上述任意一种可能的实现方式, 在第八种 可能的实现方式中,所述 HARQ进程信息还包括: 所述 HARQ进程对应的服 务小区的小区标识。
本发明的第三方面是提供一种基站, 包括: 接收单元,用于接收第一通讯设备发送的混合自动重传请求 HARQ反馈, 所述 HARQ反馈用于反馈所述第一通讯设备从第二通讯设备通过 HARQ进程 接收的数据情况;
发送单元,用于将用于标识所述 HARQ进程的所述 HARQ进程信息和所 述 HARQ反馈传输至所述第二通讯设备, 以使得所述第二通讯设备根据所述 HARQ反馈判断是否通过所述 HARQ进程重传所述数据。
在第一种可能的实现方式中, 还包括往返时间指示单元; 所述往返时间 指示单元包括: 站间时延获取子单元, 用于当所述第一通讯设备或所述第二 通讯设备为辅基站时, 获取与所述辅基站之间的站间传输时延; 往返时间确 定子单元, 用于根据所述站间传输时延, 确定所述第二通讯设备使用所述 HARQ进程传输所述数据的 HARQ往返时间 RTT; 指示信息确定子单元, 用于根据所述 HARQ RTT确定用于标识所述 HARQ RTT的指示信息; 指示 信息发送子单元, 用于将所述指示信息发送至所述第二通讯设备, 以使得所 述第二通讯设备根据所述指示信息设定所述 HARQ RTT。
结合第三方面, 在第二种可能的实现方式中, 所述指示信息确定子单元 确定的所述指示信息包括以下至少一种:所述 HARQ RTT; HARQ进程数量; 和, 所述 HARQ进程与子帧位置的映射关系。
结合第三方面的第一种可能的实现方式或第二种可能的实现方式, 在第 三种可能的实现方式中, 所述发送单元, 具体用于获取 HARQ进程的标识, 并将所述 HARQ进程的标识和所述 HARQ反馈传输至所述第二通讯设备。
结合第三方面、 第三方面的第一种可能的实现方式或第三方面的第二种 可能的实现方式, 在第四种可能的实现方式中, 所述发送单元, 具体用于获 取与所述 HARQ进程对应的子帧位置, ,并将所述子帧位置和所述 HARQ反 馈传输至所述第二通讯设备; 其中, 所述子帧位置包括: 所述 HARQ反馈所 在的子帧位置、或者所述 HARQ进程传输 HARQ反馈对应的所述数据所在的 子帧位置。
本发明的第四方面是提供一种通讯设备, 包括:
发送单元, 用于通过混合自动重传请求 HARQ进程向第一通讯设备发送 数据;
接收单元,用于接收主基站发送的用于标识所述 HARQ进程的 HARQ进 程信息、 以及对应所述数据的 HARQ反馈 ,所述 HARQ反馈是所述第一通讯 设备发送至所述主基站的, 且用于反馈所述第一通讯设备通过所述 HARQ进 程接收所述数据的情况;
处理单元,用于根据所述 HARQ反馈判断是否通过所述 HARQ进程重传 所述数据。
在第一种可能的实现方式中, 还包括: 往返时间设定单元, 用于接收所 述主基站发送的用于标识 HARQ往返时间 RTT的指示信息, 并根据所述指 示信息设定使用所述 HARQ进程传输所述数据的所述 HARQ RTT, 其中, 所 述指示信息是所述主基站根据所述主基站与辅基站之间的站间传输时延确定 的。
结合第四方面的第一种可能的实现方式, 在第二种可能的实现方式中, 所述指示信息包括: 所述 HARQ RTT; 所述往返时间设定单元, 具体用于增 加本地的当前 HARQ进程数量直至将当前 HARQ RTT增加至所述 HARQ RTT。
结合第四方面的第一种可能的实现方式, 在第三种可能的实现方式中, 所述指示信息包括: HARQ进程数量, 所述 HARQ进程数量是所述主基站根 据所述 HARQ RTT确定的; 所述往返时间设定单元, 具体用于增加本地的当 前 HARQ进程数量至所述 HARQ进程数量。
结合第四方面的第一种可能的实现方式, 在第四种可能的实现方式中, 所述指示信息包括: HARQ进程与子帧位置的映射关系, 所述映射关系是所 述主基站根据所述 HARQ RTT确定的; 所述往返时间设定单元, 具体用于根 据所述映射关系将 HARQ进程设置在对应的子帧位置。
结合第四方面的第四种可能的实现方式, 在第五种可能的实现方式中, 所述接收单元, 具体用于接收所述主基站发送的所述 HARQ进程的标识和所 述 HARQ反馈;或接收所述主基站发送的与所述 HARQ进程对应的子帧位置 和所述 HARQ反馈; 其中, 所述子帧位置包括: 所述 HARQ反馈所在的子帧 位置、或者所述 HARQ进程传输的 HARQ反馈对应的所述数据所在的子帧位 置。
结合第四方面, 或上述第四方面的任意一种可能的实现方式, 所述通讯 设备为用户终端或辅基站。 本发明的第五方面是提供一种基站, 包括:
接收机, 用于接收第一通讯设备发送的混合自动重传请求 HARQ反馈, 所述 HARQ反馈用于反馈所述第一通讯设备从第二通讯设备通过 HARQ进程 接收的数据情况;
发射机, 用于将用于标识所述 HARQ进程的所述 HARQ进程信息和
HARQ反馈传输至所述第二通讯设备, 以使得所述第二通讯设备根据所述 HARQ反馈判断是否通过所述 HARQ进程重传所述数据。
在第一种可能的实现方式中, 还包括: 处理器, 用于当所述第一通讯设 备或所述第二通讯设备为辅基站时,获取与所述辅基站之间的站间传输时延; 根据所述站间传输时延, 确定所述第二通讯设备使用所述 HARQ进程传输数 据的 HARQ往返时间 RTT;并根据所述 HARQ RTT确定用于标识所述 HARQ RTT的指示信息; 所述发射机,还用于将标识所述 HARQ RTT的所述指示信 息发送至所述第二通讯设备, 以使得所述第二通讯设备根据所述指示信息设 定所述 HARQ RTT。
结合第五方面的第一种可能的实现方式, 在第二种可能的实现方式中, 所述指示信息包括以下至少一种: 所述 HARQ RTT; HARQ进程数量; 和, 所述 HARQ进程与子帧位置的映射关系。
结合第五方面的第一种可能的实现方式或第二种可能的实现方式, 在第 三种可能的实现方式中, 所述处理器, 具体用于获取 HARQ进程的标识。
结合第五方面的第一种可能的实现方式或者第二种可能的实现方式, 在 第四种可能的实现方式中, 所述处理器, 还用于获取 HARQ进程的标识; 所 述发射机,具体用于将所述 HARQ进程的标识和所述 HARQ反馈传输至所述 第二通讯设备。
结合第五方面的第一种可能的实现方式或者第二种可能的实现方式, 在 第五种可能的实现方式中, 所述处理器, 还用于获取与所述 HARQ进程对应 的子帧位置; 所述发射机, 具体用于将所述子帧位置和所述 HARQ反馈传输 至所述第二通讯设备; 其中, 所述子帧位置包括: 所述 HARQ反馈所在的子 帧位置、 或者所述数据所在的子帧位置; 所述 HARQ进程信息包括所述子帧 位置。
本发明的第六方面是提供一种通讯设备, 包括: 发射机, 用于通过 HARQ进程向第一通讯设备发送数据;
接收机,用于接收主基站发送的用于标识所述 HARQ进程的 HARQ进程 信息、以及对应所述数据的 HARQ反馈,所述 HARQ反馈是所述第一通讯设 备发送至所述主基站的, 且用于反馈所述第一通讯设备通过所述 HARQ进程 接收所述数据的情况;
处理器,用于根据所述 HARQ反馈判断是否通过所述 HARQ进程重传所 述数据。
在第一种可能的实现方式中, 所述接收机, 还用于接收所述主基站发送 的用于标识 HARQ往返时间 RTT的指示信息, 所述指示信息是所述主基站 根据所述主基站与辅基站之间的站间传输时延确定的; 所述处理器, 还用于 根据所述指示信息设定使用所述 HARQ进程传输所述数据的所述 HARQ RTT。
结合第六方面的第一种可能的实现方式, 在第二种可能的实现方式中, 所述处理器, 具体用于在所述指示信息包括所述 HARQ RTT时, 增加本地的 当前 HARQ进程数量直至将当前 HARQ RTT增加至所述 HARQ RTT。
结合第六方面的第一种可能的实现方式, 在第三种可能的实现方式中, 所述处理器, 具体用于在所述指示信息包括 HARQ进程数量时, 增加本地的 当前 HARQ进程数量至所述 HARQ进程数量。
结合第六方面的第一种可能的实现方式, 在第四种可能的实现方式中, 所述处理器, 具体用于在所述指示信息包括 HARQ进程与子帧位置的映射关 系时, 据所述映射关系将 HARQ进程设置在对应的子帧位置。
结合第六方面的第四种可能的实现方式, 在第五种可能的实现方式中, 所述接收机, 具体用于接收所述主基站发送的所述 HARQ进程的标识和所述 HARQ反馈; 或接收所述主基站发送的与所述 HARQ进程对应的子帧位置和 所述 HARQ反馈; 其中, 所述子帧位置包括: 所述 HARQ反馈所在的子帧位 置、 或者所述 HARQ进程传输 HARQ反馈对应的数据所在的子帧位置。
结合第六方面, 第六方面的第一种可能的实现方式至第六方面的第五中 可能的实现方式中的任意一种可能的实现方式,在第六种可能的实现方式中, 所述通讯设备为用户终端或辅基站。
本发明提供的 HARQ反馈的传输方法和装置的技术效果是: 通过由主基 站将 HARQ反馈转发给第二通讯设备, 实现了跨基站的 HARQ反馈的传输。 附图说明
图 1为本发明 HARQ反馈的传输方法实施例的应用系统架构图; 图 2为本发明 HARQ反馈的传输方法实施例中涉及到的 HARQ进程示意图; 图 3为本发明 HARQ反馈的传输方法一实施例的流程示意图; 图 4为本发明 HARQ反馈的传输方法另一实施例的流程示意图; 图 5为本发明 HARQ反馈的传输方法又一实施例的信令示意图; 图 6为本发明 HARQ反馈的传输方法又一实施例的信令示意图; 图 7为本发明 HARQ反馈的传输方法又一实施例的信令示意图; 图 8为本发明 HARQ反馈的传输方法又一实施例中的 HARQ进程设 置示意图;
图 9为本发明主基站实施例的结构示意图;
图 10为本发明通讯设备实施例的结构示意图;
图 11为本发明基站实施例的实体构造图;
图 12为本发明通讯设备实施例的实体构造图。 具体实施方式
本发明实施例的 HARQ反馈的传输方法是应用于跨基站的载波聚合技术 的场景, 图 1为本发明 HARQ反馈的传输方法实施例的应用系统架构图, 如 图 1所示, 以两个基站的三个小区参与聚合为例, 其中一个是主基站, 另一 个是辅基站, 参与聚合的三个小区中, 主小区和一个辅小区属于主基站下, 另一个辅小区属于辅基站下。 对于辅基站通过辅小区的载波下行传输至终端 的数据, 终端需要向辅基站返回 HARQ反馈, 以告知辅基站该数据是否已被 正确接收。
本实施例中, 终端是通过主小区的载波上行传输至主基站, 再由主基站 将该 HARQ反馈转发至辅基站的。 同理, 当有多个基站时, 同样包括主基站 和辅基站, 辅基站下行传输数据的 HARQ反馈也都是通过主基站转发的。 在 下面的各实施例中,也是主要描述对于 HARQ反馈在基站间的转发传输过程, 例如, 辅基站下行传输的 HARQ反馈是如何通过主基站转发的。 当然, 具体 实施例中, 本发明实施例的 HARQ反馈的传输方法同样适用于上行传输数据 的反馈,例如,终端在给辅基站上行传输数据后,辅基站要向终端返回 HARQ 反馈, 在辅基站不提供下行传输的情况下该 HARQ反馈也是通过主基站转发 给终端的。 其中, 上行传输情况下的终端侧的处理过程与下行传输时的辅基 站侧的处理过程是相同的, 因此, 在如下的实施例中, 将只以下行传输过程 为例对本发明的 HARQ反馈的传输方法进行说明。
本文中描述的技术可用于各种通信系统, 例如当前 2G, 3G通信系统和 下一代通信系统, 例如全球移动通信系统( GSM , Global System for Mobile communications ) , 码分多址 ( CDMA, Code Division Multiple Access )系统, 时分多址(TDMA, Time Division Multiple Access ) 系统, 宽带码分多址
( WCDMA, Wideband Code Division Multiple Access Wireless ) , 频分多址 ( FDMA, Frequency Division Multiple Addressing ) 系统 , 正交频分多址 ( OFDMA, Orthogonal Frequency-Division Multiple Access ) 系统, 单载波 FDMA ( SC-FDMA ) 系统, 通用分组无线业务( GPRS , General Packet Radio Service ) 系统, 长期演进(LTE, Long Term Evolution ) 系统, 以及其他此类 通信系统。
本申请中涉及的终端, 可以是无线终端也可以是有线终端, 无线终端可 以是指向用户提供语音和 /或数据连通性的设备, 具有无线连接功能的手持式 设备、 或连接到无线调制解调器的其他处理设备。 无线终端可以经无线接入 网 (例如, RAN, Radio Access Network )与一个或多个核心网进行通信, 无 线终端可以是移动终端, 如移动电话(或称为 "蜂窝" 电话)和具有移动终 端的计算机, 例如, 可以是便携式、 袖珍式、 手持式、 计算机内置的或者车 载的移动装置, 它们与无线接入网交换语言和 /或数据。 例如, 个人通信业务 ( PCS, Personal Communication Service )电话、无绳电话、会话发起协议( SIP ) 话机、 无线本地环路 ( WLL, Wireless Local Loop )站、 个人数字助理( PDA, Personal Digital Assistant )等设备。 无线终端也可以称为系统、 订户单元 ( Subscriber Unit )、 订户站( Subscriber Station ) , 移动站( Mobile Station ) 、 移动台 (Mobile ) 、 远程站 ( Remote Station ) 、 接入点 ( Access Point ) 、 远 程终端( Remote Terminal )、 接入终端( Access Terminal ) 、 用户终端(User Terminal ) 、 用户代理(User Agent ) 、 用户设备 ( User Device ) 、 或用户装 备 ( User Equipment ) 。
本申请中涉及的基站(例如, 接入点) , 可以是指接入网中在空中接口 上通过一个或多个扇区与无线终端通信的设备。 基站可用于将收到的空中帧 与 IP分组进行相互转换, 作为无线终端与接入网的其余部分之间的路由器, 其中接入网的其余部分可包括网际协议(IP ) 网络。 基站还可协调对空中接 口的属性管理。 例如, 基站可以是 GSM或 CDMA中的基站 (BTS, Base Transceiver Station ) ,也可以是 WCDMA中的基站( NodeB ) ,还可以是 LTE 中的演进型基站( NodeB或 eNB或 e-NodeB, evolutional Node B ) , 本申请 并不限定。
为了使得下面对 HARQ反馈的传输方法的描述更加清楚和更容易理解, 首先对该方法中涉及到的 HARQ反馈相关的一些概念说明如下:
图 2为本发明 HARQ反馈的传输方法实施例中涉及到的 HARQ进程示意 图, 基于该图 2所示说明如下概念:
HARQ进程: 假设辅基站在帧结构 0的子帧 0的位置向终端发送下行数 据,在子帧 4接收到终端返回的对应该数据的 HARQ反馈,所述 HARQ反馈 用于反馈所述第一通讯设备从第二通讯设备通过 HARQ进程接收的数据情 况; 如果发现数据未被正确接收, 则在帧 0的子帧 8重新发送该数据; 从发 送数据(子帧 0 )、 等待终端反馈 (子帧 1〜子帧 3 )、接收到 HARQ反馈 (子 帧 4 ) 、 处理等待 (子帧 5〜子帧 7 ) 、 再到重新发送该数据(子帧 8 ) , 这样 的一个往返过程称为一个 HARQ进程,相当于每一个 HARQ进程负责对某个 数据的传输, 直至这个数据完成传输或达到预设的最大尝试次数而放弃。
HARQ RTT: 表示 HARQ的往返时间 (round trip time, 简称: RTT), 是 从使用该 HARQ进程传输某数据,到再使用该 HARQ进程进行数据传输之间 的时间间隔; 当然, 所述的再使用该 HARQ进程进行传输, 可以是传输新的 数据或者重传原来的数据。
同步 HARQ:如果 HARQ RTT是固定的,则这种 HARQ称为同步 HARQ; 比如, 假设 HARQ RTT是 10ms, 每个子帧的长度是 lms, 则当在子帧 0使 用 HARQ进程 1传输下行数据后, 必须在下一个帧结构的子帧 0再次使用该 HARQ进程 1 , 即该 HARQ进程的使用间隔时间是固定的。
异步 HARQ: 如果 HARQ RTT是不固定的, 则这种 HARQ称为异步 HARQ; 即相当于该 HARQ进程的使用间隔时间是不固定的。
本发明实施例中的数据传输, 是釆用 HARQ多进程的方式, 即通过多个 HARQ进程轮流传输数据, 比如, 在子帧 0传输 HARQ进程 1的下行数据, 在子帧 1传输 HARQ进程 2的下行数据等。
实施例一
图 3为本发明 HARQ反馈的传输方法一实施例的流程示意图, 该方法可 以由主基站执行, 如图 3所示, 该方法包括:
301、 接收第一通讯设备发送的 HARQ反馈。
其中, 所述的第一通讯设备, 在下行传输的场景, 第一通讯设备是终端, 第二通讯设备是辅基站 (由于本发明实施例讨论的是跨基站的 HARQ反馈, 因此只考虑辅基站的 HARQ反馈); 在上行传输的场景, 第一通讯设备是辅 基站, 第二通讯设备是终端。
所述的 HARQ反馈, 是对应于第一通讯设备从第二通讯设备接收到的数 据的反馈, 用于反馈所述第一通讯设备从第二通讯设备通过 HARQ进程接收 的数据情况, 比如反馈该数据是否已经被第一通讯设备正确接收。 例如, 第 一通讯设备在接收到数据后, 如果能够正确译码, 则返回的 HARQ反馈可以 是 ACK, 表示正确接收; 如果数据译码错误, 则返回的 HARQ反馈可以是 NACK, 表示未正确接收。 该 HARQ反馈可以经由主基站返回给第二通讯设 备, 以使得第二通讯设备据此判断是否需要重传该数据。
302、将用于标识所述 HARQ进程的 HARQ进程信息和所述 HARQ反馈 传输至所述第二通讯设备。
其中, 在发送所述 HARQ进程信息之前, 主基站要获取用于标识传输所 述数据的 HARQ进程的 HARQ进程信息。
具体的,第二通讯设备在向第一通讯设备发送数据时,是通过某个 HARQ 进程发送的; 因此, 主基站在向第二通讯设备返回 HARQ反馈时, 需要使得 第二通讯设备能够知道该 HARQ反馈是对应于哪个数据的, 而由于该数据是 通过某个 HARQ进程传输的,所以第二通讯设备知道 HARQ反馈是对应于哪 个 HARQ进程, 即可以获悉该 HARQ反馈对应于哪个数据。 故, 主基站可以 将 HARQ进程信息发送给第二通讯设备,上述 HARQ进程信息标识了传输所 述数据的 HARQ进程。 如上所述的, 第二通讯设备例如辅基站, 其自身是知道在某个帧结构的 某个子帧的位置, 发送的是哪个 HARQ进程, 所以, 该 HARQ进程信息也可 以是与该 HARQ进程对应的子帧位置, 辅基站可以根据该子帧位置自己确定 是哪个 HARQ进程; 或者, HARQ进程信息也可以是 HARQ进程标识例如 HARQ进程号( HARQ process id )。 具体的 HARQ进程信息的获取将在后面 的实施例中详细说明。
其中,第二通讯设备可以根据该 HARQ进程信息得知该 HARQ反馈是针 对哪个进程传输的数据的,并根据所述 HARQ反馈判断是否通过该 HARQ进 程重传所述数据; 例如, 如果 HARQ反馈是 ACK, 则第二通讯设备可以通过 该 HARQ进程传输新的数据, 如果 HARQ反馈是 NACK, 则第二通讯设备 可以通过该 HARQ进程重传上一次的数据。
可选的, 在同步传输方式中, 当所述第一通讯设备或所述第二通讯设备 为辅基站时, 主基站要获取与所述辅基站之间的站间传输时延; 并根据该站 间传输时延, 确定所述第二通讯设备使用所述 HARQ进程传输所述数据的 HARQ往返时间 RTT;还向所述第二通讯设备发送用于标识所述 HARQ RTT 的指示信息, 以使得第二通讯设备根据所述指示信息设定 HARQ RTT。 这样 就能够使得第二通讯设备设置的所述 HARQ RTT考虑了站间传输时延的因 素, 能够很好的实现跨基站场景下的 HARQ反馈的传输。
进一步的, 在该同步方式下, 主基站向第二通讯设备发送的 HARQ RTT 的指示信息, 可以釆用多种形式:
例如, 可以直接向第二通讯设备发送所述 HARQ RTT , 这样第二通讯设 备能够根据该 HARQ RTT , 增加当前 HARQ进程数量直至将其当前 HARQ RTT增加至所述 HARQ RTT。
又例如,可以向第二通讯设备发送 HARQ进程数量,所述 HARQ进程数 量是根据所述 HARQ RTT确定的, 第二通讯设备能够根据该 HARQ进程数 量, 增加其当前 HARQ进程数量至所述 HARQ进程数量。
上述两种 HARQ RTT的指示信息的发送方式中, HARQ进程数量都是改 变的, 这种情况下, 主基站可以将所述 HARQ RTT的指示信息发送至所述第 一通讯设备, 以使得所述第一通讯设备根据所述指示信息调整与所述 HARQ 进程对应的 HARQ緩冲区。 再例如, 还可以向所述第二通讯设备发送所述 HARQ进程与子帧位置的 映射关系, 所述映射关系是根据所述 HARQ RTT确定的, 以使得所述第二通 讯设备根据所述映射关系将所述 HARQ进程设置在对应的子帧位置。
这种 HARQ RTT的指示信息的发送方式, HARQ进程数量未改变。 可选 的, 主基站发送的所述映射关系可以通过首个 HARQ进程的用于发送所述数 据的子帧的子帧位置、 以及所述首个 HARQ进程的使用周期表示。
可选的, 在上述的同步传输方式中, 主基站发送给第二通讯设备的所述 HARQ进程信息还可以包括: 所述 HARQ进程的标识, 以使得第二通讯设备 根据该标识直接获知 HARQ反馈对应的数据。
可选的, 不论是同步传输方式还是异步传输方式, HARQ进程信息都可 以包括子帧位置, 所述子帧位置包括: 所述 HARQ反馈所在的子帧位置、 或 者所述 HARQ进程传输的 HARQ反馈对应的所述数据所在的子帧位置。
进一步的, 本发明实施例中, HARQ反馈的传输方法可以适用于上行传 输也适用于下行传输; 当所述数据为下行传输的数据时, 所述第二通讯设备 为辅基站, 所述第一通讯设备为终端; 当所述数据为上行传输的数据时, 所 述第二通讯设备为终端, 所述第一通讯设备为辅基站。
此外,所述 HARQ进程信息还可以包括: 所述 HARQ进程对应的服务小 区的小区标识, 以使得辅基站能够根据该标识识别出 HARQ反馈对应的是哪 个小区的数据。
本实施例的 HARQ反馈的传输方法,通过由主基站将 HARQ反馈转发给 第二通讯设备, 实现了跨基站的 HARQ反馈的传输。
实施例二
图 4为本发明 HARQ反馈的传输方法另一实施例的流程示意图, 与第一 实施一不同之处在于该方法是由第二通讯设备执行, 如图 4所示, 该方法包 括:
401、 通过 HARQ进程向第一通讯设备发送数据。
402、 接收主基站发送的用于标识所述 HARQ进程的 HARQ进程信息、 以及对应所述数据的 HARQ反馈。
具体的, 所述 HARQ反馈是所述第一通讯设备发送至所述主基站的, 并 且用于反馈所述第一通讯设备通过所述 HARQ进程接收所述数据的情况。 403、根据所述 HARQ反馈判断是否通过所述 HARQ进程重传所述数据。 例如, 如果 HARQ反馈是 ACK, 则第二通讯设备可以通过该 HARQ进 程传输新的数据; 如果 HARQ反馈是 NACK, 则第二通讯设备可以通过该 HARQ进程重传上一次的数据。
本实施例的 HARQ反馈的传输方法, 通过第二通讯设备根据主基站转发 的 HARQ反馈,得以确定是否重传数据,实现了跨基站的 HARQ反馈的传输。
在下面的实施例三〜实施例五中, 将以 LTE中的下行传输为例 , 针对实 施例一及实施例二进行具体说明, 并^没主基站是宏站, 该宏基站下的一个 小区作为主小区, 辅基站是微站, 该微站下的一个小区作为辅小区, 终端可 以对上述两个小区的载波进行跨基站(即属于不同基站) 的载波聚合。 尽管 ^^于 LTE进行描述, 但具体实施中, 该方法同样适用于 UMTS、 WiMax、 或其他演进系统。
实施例三
图 5为本发明 HARQ反馈的传输方法又一实施例的信令示意图, 本实施 例是以异步 HARQ为例对上述各实施例的具体描述, 该异步方式下辅基站侧 使用某个 HARQ进程的时间间隔是不固定的, 通常会等待至接收到数据的 HARQ反馈再决定通过该 HARQ进程重传数据还是传输新的数据即可。
如图 5所示, 该方法可以包括:
501、 终端增加微站的小区为辅小区。
其中, 终端增加小区可以釆用常规技术。
举例如下: 宏站指示终端测量某个频率的载波的信号质量, 终端依据指 示测量该频率的载波后, 将表示其信号质量的参数例如信号强度等发送至宏 站; 宏站根据预设阈值确定该载波的信号质量满足通信条件, 则指示终端与 该载波建立连接。 终端则与该载波建立连接。 当该载波为微站下的小区的载 波时, 该终端与该微站下的辅小区建立连接。
502、 微站向终端进行下行数据传输。
其中, 微站的下行传输数据釆用 HARQ方式; 例如, 可以参考图 2, 微 站可以在某个帧的子帧 0传输 HARQ进程 1的下行数据,在子帧 1传输 HARQ 进程 2的下行数据等。
503、 终端向宏站发送 HARQ反馈。 其中, 终端在接收到微站发送的数据后, 要向微站返回 HARQ反馈, 该 HARQ反馈用于表示数据是否已经正确接收, 例如, ACK表示正确接收, NACK表示数据译码错误未正确接收等。
本实施例中, 终端返回的上述 HARQ反馈是发送至宏站的, 因为在载波 聚合技术中, 即使是在跨基站的情况下, 参与聚合的多个小区也是包括一个 主小区和多个辅小区的, 该主小区为宏站下的主小区, 所有小区的下行传输 数据的 HARQ反馈均是通过该主小区的上行传输发送至宏站。 对于跨基站的 情况, HARQ反馈同样经由宏站转发至微站。
504、 宏站获取 HARQ进程的 HARQ进程信息。
其中,如前面已经说明过的 ,微站在下行传输数据时,是通过某个 HARQ 进程传输的; 因此, 宏站不仅需要将终端的 HARQ反馈转发至微站, 还需要 使得微站能够得知该 HARQ反馈是对应哪个数据的, 是用于表示哪个数据的 接收结果比如正确接收或者译码错误的。 基于上述, 实际上微站需要知道该 HARQ反馈对应于哪个 HARQ进程 , 就可以确定该 HARQ进程传输的数据 , 即得到 HARQ反馈对应的数据。
本实施例中, HARQ进程的确定, 可以通过该 HARQ进程对应的子帧位 置表示; 可以参考图 2来理解, 例如, 图 2中的 HARQ进程 1 , 微站自身是 知道其在某个子帧发送的是哪个进程的下行数据。 比如, 在帧结构 0的子帧 0, 是传输 HARQ进程 1的下行数据; 在帧结构 0的子帧 1 , 是传输 HARQ 进程 2的下行数据等,这些微站自身是知道的; 因此,只要告诉微站该 HARQ 反馈对应的 HARQ进程的相关子帧位置, 微站就可以根据该子帧位置得知对 应的 HARQ进程。
具体的, 所述的子帧位置可以是: HARQ反馈所在的子帧位置、 或者 HARQ反馈对应的数据所在的子帧位置。
举例如下:在 HARQ传输方式中,考虑到基站或者终端的处理时延要求, 通常对 HARQ进程的使用时序进行了限制, 比如, 终端在接收到某个 HARQ 进程的下行传输数据后, 会间隔三个子帧再进行 HARQ反馈, 例如, 某个基 站在子帧 0进行下行传输, 终端接收到该数据后, 可能会在子帧 4再执行 HARQ反馈; 所以, 宏站在接收到终端发送的 HARQ反馈时, 其可以得到该 HARQ反馈所在的子帧位置, 例如是在某个子帧上行传输的, 同样根据上述 的道理, 也可以推知该 HARQ反馈对应的数据所在的子帧位置, 只要宏站知 道终端做此 HARQ反馈与传输下行数据的时间间隔。
需要说明的是, 在载波聚合方式中, 载波聚合情况下, 所有小区 (该所 有小区包括不同基站下的所有小区)的下行子帧是对齐的, 基站间具体帧号 / 子帧号差多少主基站可以提前知道; 这里的子帧对齐指的是子帧的发送时刻 是相同的, 例如, 主基站 a、 辅基站 b都在同一时刻发送某个子帧, 区别只是 主基站 a在该时刻发送的是子帧 1、辅基站 b在该时刻发送的是子帧 3。所以, 主基站可以根据 HARQ反馈在主小区的子帧位置算出该反馈对应数据在微站 小区的子帧位置。本实施例中所述的子帧位置都是指微站小区中的子帧位置, 不是主基站的, 他们之间可能有一个偏移, 微站也可以依据该子帧位置判断 自身侧的对应该子帧位置的 HARQ进程的。
上述的子帧位置由于是用于据此确定对应的 HARQ进程的, 所以可以将 该子帧位置称为 HARQ进程信息。 例如, 宏站递交给微站的子帧位置可以表 示为: 10*系统帧号 +子帧号; 比如 { A/N bit, 10*SFN + subframe number (0..9)} ) , 其中, A/N bit是用于表示终端给微站的 HARQ反馈, 所述的 A即 ACK, 表示已经正确接收, 所述的 N是 NACK, 表示未正确接收, A/N表示 这个 HARQ反馈是 A或者 N; SFN表示系统帧号(例如是 0、 1、 2 等), 例如, SFN为 0代表帧结构 0, 此时是以每个帧结构包括 10个子帧为例。
505、 宏站将所述 HARQ进程信息和 HARQ反馈传输至微站。
其中,所述的 HARQ进程信息还可以包括: 所述 HARQ进程对应的服务 小区的小区标识。
具体的,终端在向宏站上行传输某 HARQ反馈时,会携带该 HARQ反馈 对应的数据所在的载波标识, 即微站通过下行链路传输该数据的载波标识, 该载波标识也可以通过 HARQ反馈占用的资源位置隐含指示; 宏站是载波聚 合方式中的主基站, 起控制作用, 所以其是知道参与聚合的各个载波分别所 属的小区。 当微站有多个辅小区都参与聚合时, 此时, 宏站可以将下行传输 数据的载波所在的小区的小区标识也发送至微站, 以使得微站知道该 HARQ 反馈是哪个载波下的数据的反馈; 特别是当宏站要一次递交微站下的多个辅 小区的下行传输 HARQ反馈给微站时, 携带小区标识可以使微站更加清楚的 知道 HARQ反馈对应的下行载波。 该小区标识可以为 Cell Index, 也可以是 一个位图 (bitmap ) 。
506、 微站根据 HARQ反馈, 判断是否通过 HARQ进程重传所述数据。 其中, 微站可以根据宏站发送的 HARQ进程信息例如子帧位置, 判断该 HARQ反馈是对应哪个数据或者说是对应于哪个 HARQ进程。 例如, HARQ 进程信息是, HARQ反馈所在的子帧位置, 微站可以根据该 HARQ反馈所在 的子帧位置, 推断出该 HARQ反馈对应的 HARQ进程; 或者, 当 HARQ进 程信息是 HARQ反馈对应的下行数据的子帧位置时, 微站可以根据该下行数 据传输的子帧位置,确定对应的 HARQ进程; 例如,如果子帧位置是: (10*1 + 5 ) , 表明是第 15个子帧, 微站可以确定自身在第 15个子帧的位置传输的 是哪个 HARQ进程的数据。
微站可以根据接收到的 HARQ反馈,判断是否在对应的 HARQ进程上进 行下行数据重传。 例如, 如果 HARQ反馈是 ACK, 则表明微站下行传输的数 据已经被终端正确接收,则微站可以通过该 HARQ进程传输新的数据;或者, 如果 HARQ反馈是 NACK, 则微站可以通过该 HARQ进程重传原来的数据。
因此,基于本实施例的异步 HARQ,对 HARQ进程的等待没有时间限制, 微站会等待至接收到数据的 HARQ反馈再决定通过该 HARQ进程重传数据还 是传输新的数据, 实现跨基站的 HARQ反馈。
实施例四
图 6为本发明 HARQ反馈的传输方法又一实施例的信令示意图, 本实施 例是以同步 HARQ为例对上述各实施例的具体描述, 需要说明的是, 在本实 施例中,同步 HARQ与异步 HARQ的区别在于,异步 HARQ由于 HARQ RTT 不固定,所以微站可以在接收到 HARQ反馈时再决定 HARQ进程的使用,对 HARQ进程的等待没有时间限制; 而同步 HARQ的 HARQ RTT是固定的, 即 HARQ进程的使用周期是固定的,比如,在某个时刻使用了 HARQ进程 1 , 则根据协议规定, 通常在 8ms之后需要再次使用 HARQ进程 1。 在跨基站的 情况下,由于存在站间传输时延(比如宏站将 HARQ反馈传输至微站的时间), 现有技术的 HARQ RTT将不再适用, 因为其是针对同一个基站的, 没有站间 传输时延的问题。
本实施例中,实际上在考虑站间传输时延的基础上,将现有的 HARQ RTT 进行了增加, 以符合跨基站传输的实际情况; 并且, 可以由宏站在微站执行 下行数据传输之前, 先根据站间传输时延得到新的 HARQ RTT, 并向微站发 送 HARQ RTT的指示信息, 以使得微站根据该指示信息重新设定 HARQ RTT, 相当于重新设定 HARQ进程与子帧的对应关系, 确定好在哪个子帧传 输哪个进程, 然后再执行下行数据传输。
本实施例的同步 HARQ, 对于 HARQ RTT进行了增加, 釆取的是扩大
HARQ进程数量至 HARQ RTT的方式,以使得时间上充分利用,提高吞吐量。 如图 6所示, 该方法可以包括:
601、 宏站获取与 站之间的站间传输时延。
其中, 该站间传输时延通常是在宏站与微站之间建立通信连接时就可以 获取的参数, 此时可能微站的小区还未参与终端的载波聚合; 即, 该参数的 获取时间本实施例不做限制,例如可以是在后面的 602之前就获取,而在 602 发生之后再利用该参数做后面所述的相关处理。
602、 终端增加微站的小区为辅小区。
603、 宏站根据所述站间传输时延, 确定微站使用 HARQ进程传输数据 的往返时间 HARQ RTT、 以及用于标识所述 HARQ RTT的指示信息。
其中, 如前边所述的, 终端增加微站的小区为辅小区, 对此宏站是知道 的, 宏站可以知道终端与微站的小区之间执行载波聚合; 因此, 宏站开始根 据 601中获取的站间传输时延, 确定 站的 HARQ RTT。
例如, 微站的 HARQ RTT通常都会有一个协议规定的数值, 比如 8ms, 在现有技术的单基站下的载波聚合方式中, 微站都会釆用该预定的 HARQ RTT进行 HARQ进程的使用安排。 而本实施例中, 宏站在考虑了站间传输时 延后, 确定了一个新的 HARQ RTT , 例如是 10ms , 相比之前是增加了, 实际 上是相当于在原来的 HARQ RTT的基础上加上站间传输时延。
本实施例中, 宏站在确定了 HARQ RTT之后, 是可以直接将该 HARQ RTT传递至微站, 由微站据此做 RTT的更改处理; 或者, 宏站也可以是不直 接传递 HARQ RTT, 而是能够表示该 RTT的其他信息,使得微站根据该其他 信息也是能够将其自身侧的 RTT扩展到宏站计算得到的新的 RTT的。 因此, 本实施例将上述的 HARQ RTT或者其他信息等统称为用于标识所述 HARQ RTT的指示信息。
例如, 所述的指示信息可以包括: HARQ RTT, 以使得微站可以将其当 前的 HARQ进程数量增加, 直至使得该微站的当前 HARQ RTT扩展至所述 的指示信息的 HARQ RTT, 也可以理解成增加 HARQ进程数量, 以充分利用 新增加的 HARQ RTT的部分, 提高吞吐量。
或者,所述的指示信息也可以是 HARQ进程数量,所述 HARQ进程数量 可以是宏站根据调整后的 HARQ RTT所更新的 HARQ进程数量。 比如, 每 个 HARQ进程的下行数据传输占用一个子帧, 一个子帧是 lms, 在子帧 0执 行 HARQ进程 1的下行传输,在子帧 1执行 HARQ进程 2的下行传输等,如 果原来 HARQ RTT是 8ms , 则有 8个 HARQ进程 , 这 8个进程轮流使用一 次就是一个周期; 如果宏站计算的新的 HARQ RTT是 10ms, 则增加了 2ms, 就可以增加 2个 HARQ进程 , 当前进程数量就是 10个 HARQ进程。
因此, 上述宏站告知微站 HARQ RTT的方式中, 可以由微站自己执行 HARQ进程数量的增加; 而也可以由宏站自身直接根据 HARQ RTT确定出 HARQ进程数量, 并将该进程数告知微站。
604、 宏站向啟站发送用于标识所述 HARQ RTT的指示信息。
其中, 该指示信息即为上述的 HARQ RTT、 或者是 HARQ进程数量。
605、 啟站根据所述指示信息重新设定所述 HARQ RTT。
其中, 如前边所述的, 微站可以将当前 HARQ进程数量调整, 直至将微 站当前的 HARQ RTT增加至宏站指示的所述 HARQ RTT; 或者, 将当前 HARQ进程数量调整至宏站所指示的 HARQ进程数量。
606、 宏站将所述用于标识 HARQ RTT的指示信息发送至终端。
其中, 本步骤可以是与 604同时执行, 只要是在终端接收微站的下行传 输数据之前即可。
本实施例中, 由于改变了 HARQ的进程数量, 因此, 终端是需要知道新 的 HARQ RTT的;因为,终端在接收微站下行传输的数据时,对于每个 HARQ 进程传输的数据,终端都会单独设置一个对应的 HARQ緩冲区, 即 HARQ緩 冲区的数量是与 HARQ进程的数量相等的, 所以, 宏站需要将 HARQ RTT 或 HARQ进程数量告知终端,以使得终端据此对 HARQ緩冲区的数量进行增 加。
607、 终端根据所述指示信息增加与 HARQ进程对应的 HARQ緩冲区。 其中, 例如, 如果指示信息是 HARQ RTT, 则终端将根据该 RTT自己确 定新的 HARQ进程的数量,并对应增加与 HARQ进程对应的 HARQ緩冲区。 如果指示信息是 HARQ进程数量, 终端将据此直接增加 HARQ緩冲区即可。
608、 微站向终端进行下行数据传输。
609、 终端向宏站发送 HARQ反馈。
610、 宏站获取 HARQ进程的 HARQ进程信息。
本实施例中, HARQ进程信息仍然是子帧位置, 例如, HARQ反馈所在 的子帧位置、 或者 HARQ反馈对应的数据所在的子帧位置。
可选的 , 宏站也可以将该 HARQ进程的 HARQ进程标识, 例如 HARQ 进程 0作为 HARQ进程信息。 因为进程与子帧的位置的对应关系是固定的, 故宏站可以根据接收的子帧确定 HARQ进程对应的 HARQ进程号。
可选的,该 HARQ进程信息也可以包括: 所述 HARQ进程对应的服务小 区的小区标 i只。
611、 宏站将所述 HARQ进程信息和 HARQ反馈传输至啟站。
612、 微站根据 HARQ反馈, 判断是否通过 HARQ进程重传所述数据。 因此,基于本实施例的同步 HARQ ,宏站根据站间时延调整 RTT或 HARQ 进程数量并发送给微站,微站再结合接收到的 HARQ反馈决定通过该 HARQ 进程重传数据还是传输新的数据, 实现跨基站的 HARQ反馈。
实施例五
图 7为本发明 HARQ反馈的传输方法又一实施例的信令示意图, 本实施 区别在于, 本实施例的宏站对于增加 HARQ RTT, 釆取的是 HARQ进程数量 不变的方式, 仍然沿用当前的 HARQ进程数量, 只是变更 HARQ RTT即每 个 HARQ进程的两次使用的时间间隔。 具体的, 如图 7所示, 该方法可以包 括:
701、 宏站获取与 站之间的站间传输时延。
702、 终端增加微站的小区为辅小区。
703、 宏站根据所述站间传输时延, 确定微站使用 HARQ进程传输数据 的往返时间 HARQ RTT、 以及用于标识所述 HARQ RTT的指示信息。
本实施例中,宏站根据 HARQ RTT确定的指示信息是, HARQ进程与子 帧位置的映射关系。 比如, 该映射关系的表示方式可以是首个 HARQ进程的 用于发送所述数据的子帧的子帧位置及 HARQ进程的使用周期, 以使得微站 根据该映射关系将 HARQ进程设置在对应的子帧位置。 需要说明的是, 本实 施例是以首个 HARQ进程的发送数据的子帧为例, 说明如何表示映射关系, 具体实施中并不局限于此,例如,还可以釆用其他 HARQ进程表示映射关系 , 还可以釆用 HARQ进程的其他子帧例如接收终端反馈所在的子帧来表示映射 关系等,只要根据所表示的映射关系能够确定 HARQ进程与子帧的对应即可。
举例如下: 参见图 8 , 图 8为本发明 HARQ反馈的传输方法又一实施例 中的 HARQ进程设置示意图,假设微站有 8个 HARQ进程,这些进程的进程 标识(即 HARQ进程 id )可以为 0〜7。 图 8中所示的 HARQ进程 id对应的 那一行方框是表示子帧,例如, fl代表其中一个子帧,每个子帧的长度是 1ms; HARQ进程 id与子帧对应,表示在该子帧使用该 HARQ进程 id对应的 HARQ 进程, 比如, fl对应 HARQ进程 idO, 是表示微站在该 fl通过 HARQ进程 0 传输下行数据。 并假设最初 HARQ RTT是 8ms, 则应该是在 f2的位置再次 使用 HARQ进程 0。
本实施例中,终端在接收到子帧 0即 fl位置通过 HARQ进程 0传输的下 行数据后, 考虑到终端的处理时延, 终端通常会在子帧 4的位置返回 HARQ 反馈; 现有技术中的单基站载波聚合的情况下, 该 HARQ反馈是直接发送至 微站的,微站在子帧 4即 β接收到该 HARQ反馈后,经过微站的处理时延后, 可能会在 的位置再次使用该 HARQ进程 0, 重传数据或者传输新的数据, 也满足了最初 HARQ RTT是 8ms的要求。 而本实施例中, HARQ反馈是由 宏站转发至微站的, 考虑到站间回传 HARQ反馈的时延, 微站有可能是在 f4 的位置才接收到该 HARQ反馈, 再加上微站处理时延的因素(通常是不小于 4ms的处理时延) , 微站有可能是在 f5的位置才再次使用 HARQ进程 0, 这 样 HARQ RTT有可能从 8ms扩展到 16ms。
如前所述的, 在上一个实施例中, 宏站是指示微站增加 HARQ进程数量 直至 HARQ RTT, 即图 8中所示的, 在从 至 f 6的 8个子帧增加对应的 8 个 HARQ进程, 直至到达下一个使用 HARQ进程 0的子帧即 f5。 而本实施 例中, 从 至 f6的这段时间将处于空闲, 不再增加 HARQ进程数量, 保持 最初的 8个 HARQ进程不变; 只是 HARQ进程的使用周期相比原来增加了, 例如, HARQ进程 0的再次使用时间原来是 f2 (当 RTT是 8ms时) , 而本 实施例 HARQ进程 0的再次使用时间变更为 f5 , 因为当前的 HARQ RTT已 经是 16ms。
因此, 尽管 HARQ进程数量不变, 但是实际上, HARQ进程与子帧位置 的映射关系发生了变化, 以满足新的 HARQ RTT的限制条件。 例如, 该映射
+HARQ进程的使用周期" , 即 "HARQ进程 0的子帧位置 +HARQ进程的使 用周期" = "fl+16ms" , 这样, HARQ进程 0就会按照该映射关系的规定, 在 fl、 f5 等子帧位置固定使用, 间隔 16ms, 其他的 HARQ进程将随在
HARQ进程 0之后依次轮流使用即可, 同样也是间隔 16ms。 其它 HARQ进 程也可以在 HARQ进程 0对应子帧的 1 ms之后依此间隔 1 ms使用,同样 HARQ RTT也是 16ms。
704、 宏站向啟站发送用于标识所述 HARQ RTT的指示信息。
其中, 该指示信息即为上述的 HARQ进程与子帧位置的映射关系。
本实施例中, 该指示消息可以不用发送至终端, 因为进程数量没变, 终 端不需要调整 HARQ緩冲区。
705、 微站根据所述指示信息重新设定所述 HARQ RTT。
其中, 如前边所述的, 微站可以根据映射关系设定 HARQ进程与子帧的 对应关系, 例如, 在子帧 fl传输 HARQ进程 0的下行数据, 在子帧 β传输 HARQ进程 4的下行数据, 在 f5再次使用 HARQ进程 0传输下行数据等。
706、 宏站将 HARQ RTT发送至终端。
其中, 本步骤是可选的; 并且, 该步骤也可以与 704—同执行。
如果执行本步骤, 则本实施例的同步 HARQ方式不需要微站在下行传输 数据时携带对应的 HARQ进程标识,终端侧就能够知道该数据是哪个 HARQ 进程的, 并将该数据放置到该进程对应的 HARQ緩冲区。 比如, HARQ进程 的使用间隔 HARQ RTT是固定的, 终端自己会判断在经过一个 HARQ RTT 后, 又会将数据存放到最初的那个 HARQ进程对应的緩冲区内; HARQ进程 与子帧位置的对应关系, 终端并不需要知道, 这时, 终端并不关心某个子帧 对应的 HARQ进程号是几, 它只需要知道这个子帧的数据应该放到哪个緩冲 区中。 例如, 在初始阶段, 8个 HARQ緩冲区一个数据都没有的时候, 某子 帧 n接收到的数据可以放入任何一个緩冲区, 但一旦放入, 后续子帧 ( n + 16*k )的数据就必须都放入这个緩冲区。所以,本实施例在变更了 HARQ RTT 之后, 是需要告知终端的, 这样终端才能根据新的 HARQ RTT, 自己确定数 据对应的 HARQ进程。需要特别说明的是,这时终端侧对 HARQ进程的编号 可能与啟站的 HARQ进程编号不同,但这不妨碍双方各自区分不同的 HARQ 进程进行数据传输和接收 /緩存。
如果不执行本步骤, 则本实施例的同步 HARQ方式, 是由微站在下行传 输数据时携带对应的 HARQ进程标识,终端侧根据携带的 HARQ进程标识得 知数据是哪个 HARQ进程的,并将该数据放置到该进程对应的 HARQ緩冲区。
707、 微站向终端进行下行数据传输。
708、 终端向宏站发送 HARQ反馈。
709、 宏站获取 HARQ进程的 HARQ进程信息。
在本实施例中,由于是宏站根据新的 HARQ RTT确定子帧位置与 HARQ 进程之间的对应关系, 因此, 宏站可以根据子帧位置自己确定其接收到的 HARQ反馈是对应于哪个 HARQ进程的。 该子帧位置包括: HARQ反馈所在 的子帧位置、或者 HARQ进程传输的 HARQ反馈对应的数据所在的子帧位置。
例如, 参考图 8所示, 宏站接收到的 HARQ反馈所在的子帧位置是 β , 宏站可以根据终端返回该 HARQ反馈的处理时延(该时延通常是预设的, 比 如协议规定好的, 所以宏站也会知道) , 推知该 HARQ反馈对应的数据应该 是在子帧 fl发送的下行数据。 宏站再根据其在 703中确定的映射关系, 可以 知道在 fl的位置微站是通过 HARQ进程 0传输下行数据(因为微站是根据宏 站发送的映射关系设定 HARQ进程的使用的, 所以宏站可以知道微站的子帧 与 HARQ进程的对应关系) , 从而确定该 HARQ反馈对应的是 HARQ进程 0。 故, 宏站可以将该 HARQ进程的 HARQ进程标识例如上述的 HARQ进程 0作为 HARQ进程信息。
当然, 可选的, 本实施例中, 宏站也可以仍然将子帧位置作为 HARQ进 程信息。 可选的, 该 HARQ进程信息还可以包括: 所述 HARQ进程对应的服 务小区的小区标识。
710、 宏站将所述 HARQ进程信息和 HARQ反馈传输至微站。
711、 微站根据 HARQ反馈, 判断是否通过 HARQ进程重传所述数据。 本实施例的同步 HARQ, 釆取的是 HARQ进程数量不变的方式, 仍然沿 用当前的 HARQ进程数量 , 只是变更 HARQ RTT即每个 HARQ进程的两次 使用的时间间隔, 得以实现跨基站的 HARQ反馈。
需要说明的是, 上述的实施例都是以宏站接收微站下行传输的 HARQ反 馈后递交给微站的, 实际上, 本发明实施例的方法也适用于微站接收宏站下 行传输的 HARQ反馈后递交给宏站, 或者微站接收其它微站下行传输的 HARQ反馈后递交给其它微站的场景等; 即当跨基站的载波聚合场景中, 不 论是宏站还是微站, 只要从该至少两个基站中选定其中一个作为主基站, 其 他都作为辅基站,在 HARQ反馈时辅基站小区对应的 HARQ反馈均是通过主 基站下的主小区上行传输至主基站, 再由主基站转发至辅基站, 而所述的主 基站或者辅基站到底是宏站还是微站, 本发明实施例不做限制。
此外, 从以上的各实施例也可以看到, 只有在增加 HARQ进程数量至 HARQ RTT的情况下 , 终端侧才需要相应增加 HARQ緩冲区, 而当仅增加 HARQ RTT而 HARQ进程数量不变的情况下, 终端侧也基本不需要做改变, 氏终端成本。
此外, 在跨基站的载波聚合的场景下, 其他的上行控制信息或者下行控 制信息, 例如, 信道状态指示(CSI, Channel Sstatus Indicator ) 、 调度请求 ( SR, Scheduling Rrequest ) , 或 RLC状态报告等, 都可以釆用经过主基站 转交给辅基站、 或者经过主基站转交给终端的方法, 即由主基站负责转发。
实施例六
图 9为本发明基站实施例的结构示意图, 该基站可以执行本发明任意实 施例的方法, 该基站例如是主基站、 或者其他类似的具有跨站协调功能的设 备; 如图 9所示, 该基站可以包括: 接收单元 91和发送单元 92; 其中, 接收单元 91 ,用于接收第一通讯设备发送的混合自动重传请求 HARQ反 馈, 所述 HARQ反馈用于反馈所述第一通讯设备从第二通讯设备通过 HARQ 进程接收的数据情况;
发送单元 92, 用于将用于标识所述 HARQ进程的所述 HARQ进程信息 和所述 HARQ反馈传输至所述第二通讯设备, 以使得所述第二通讯设备根据 所述 HARQ反馈判断是否通过所述 HARQ进程重传所述数据。
进一步的, 该基站还可以包括: 往返时间指示单元 93; 该往返时间指示 单元 93包括: 站间时延获取子单元 931、 往返时间确定子单元 932、 指示信 息确定子单元 933和指示信息发送子单元 934; 其中,
站间时延获取子单元 931 , 用于当所述第一通讯设备或所述第二通讯设 备为辅基站时, 获取与所述辅基站之间的站间传输时延;
往返时间确定子单元 932, 用于根据所述站间传输时延, 确定所述第二 通讯设备使用所述 HARQ进程传输所述数据的 HARQ往返时间 RTT;
指示信息确定子单元 933 , 用于根据所述 HARQ RTT确定用于标识所述 HARQ RTT的指示信息;
指示信息发送子单元 934, 用于将所述指示信息发送至所述第二通讯设 备, 以使得所述第二通讯设备根据所述指示信息设定所述 HARQ RTT。
进一步的, 指示信息确定子单元 933确定的所述指示信息包括以下至少 一种: 所述 HARQ RTT; HARQ进程数量; 和所述 HARQ进程与子帧位置的 映射关系。
进一步的, 发送单元 92, 具体用于获取 HARQ进程的标识, 并将所述 HARQ进程的标识和所述 HARQ反馈传输至所述第二通讯设备。
进一步的,发送单元 92, 具体用于获取与所述 HARQ进程对应的子帧位 置, 并将所述子帧位置和所述 HARQ反馈传输至所述第二通讯设备; 其中, 所述子帧位置包括: 所述 HARQ反馈所在的子帧位置、或者所述 HARQ进程 传输 HARQ反馈对应的所述数据所在的子帧位置。
本实施例的基站, 通过由基站将从第一通讯设备发送的 HARQ反馈, 以 及用于标识传输数据的 HARQ进程的 HARQ进程信息转发给属于另一基站的 第二通讯设备, 实现了跨基站的 HARQ反馈的传输, 并使得该另一基站可以 根据 HARQ反馈和 HARQ进程信息确定是否重传数据。
实施例七
图 10为本发明通讯设备实施例的结构示意图,该通讯设备可以执行本发 明任意实施例的方法, 并且, 该通讯设备在下行数据传输场景中是基站, 在 上行数据传输场景中是终端。
如图 10所示, 该通讯设备可以包括: 发送单元 1001、 接收单元 1002和 处理单元 1003; 其中,
发送单元 1001 ,用于通过混合自动重传请求 HARQ进程向第一通讯设备 发送数据;
接收单元 1002, 用于接收主基站发送的用于标识所述 HARQ进程的 HARQ进程信息、 以及对应所述数据的 HARQ反馈, 所述 HARQ反馈是所 述第一通讯设备发送至所述主基站的, 且用于反馈所述第一通讯设备通过所 述 HARQ进程接收所述数据的情况;
处理单元 1003 , 用于根据所述 HARQ反馈判断是否通过所述 HARQ进 程重传所述数据。
进一步的, 该通讯设备还包括: 往返时间设定单元 1004, 用于接收所述 主基站发送的用于标识 HARQ往返时间 RTT的指示信息, 并根据所述指示 信息设定使用所述 HARQ进程传输所述数据的所述 HARQ RTT, 其中, 所述 指示信息是所述主基站根据主基站与辅基站之间的站间传输时延确定的。
进一步的, 所述指示信息包括: 所述 HARQ RTT; 所述往返时间设定单 元 1004 , 具体用于增加本地的当前 HARQ进程数量直至将当前 HARQ RTT 增加至所述 HARQ RTT。
进一步的, 所述指示信息包括: HARQ进程数量, 所述 HARQ进程数量 是所述主基站根据所述 HARQ RTT确定的; 所述往返时间设定单元 1004, 具体用于增加本地的当前 HARQ进程数量至所述 HARQ进程数量。
进一步的, 所述指示信息包括: HARQ进程与子帧位置的映射关系, 所 述映射关系是所述主基站根据所述 HARQ RTT确定的; 所述往返时间设定单 元 1004, 具体用于根据所述映射关系将 HARQ进程设置在对应的子帧位置。
所述接收单元, 具体用于: 接收所述主基站发送的所述 HARQ进程的标 识和所述 HARQ反馈; 或,接收所述主基站发送的与所述 HARQ进程对应的 子帧位置和所述 HARQ反馈; 其中, 所述子帧位置包括: 所述 HARQ反馈所 在的子帧位置、或者所述 HARQ进程传输的 HARQ反馈对应的所述数据所在 的子帧位置。
所述通讯设备为终端或辅基站。
本实施例的通讯设备, 通过接收由主基站转发的第一通讯设备的 HARQ 的 HARQ反馈的传输, 并能够根据 HARQ反馈和 HARQ进程信息确定是否 重传数据。 实施例八
图 11为本发明基站实施例的实体构造图,该基站可以执行本发明任意实 施例的方法,该基站例如是主基站或者其他类似的具有跨站协调功能的设备。
如图 11所示 , 该基站可以包括: 接收机 1101和发射机 1102; 其中, 接收机 1101 ,用于接收第一通讯设备发送的混合自动重传请求 HARQ反 馈, 所述 HARQ反馈用于反馈所述第一通讯设备从第二通讯设备通过 HARQ 进程接收的数据情况;
发射机 1102, 用于将用于标识所述 HARQ进程的所述 HARQ进程信息 和 HARQ反馈传输至所述第二通讯设备, 以使得所述第二通讯设备根据所述 HARQ反馈判断是否通过所述 HARQ进程重传所述数据。
进一步的, 本实施例的基站还包括: 处理器 1103 , 用于当所述第一通讯 设备或所述第二通讯设备为辅基站时, 获取与所述辅基站之间的站间传输时 延; 根据所述站间传输时延, 确定所述第二通讯设备使用所述 HARQ进程传 输数据的 HARQ往返时间 RTT; 并根据所述 HARQ RTT确定用于标识所述 HARQ RTT的指示信息;
发射机 1102, 还用于将标识所述 HARQ RTT的所述指示信息发送至所 述第二通讯设备, 以使得所述第二通讯设备根据所述指示信息设定所述 HARQ RTT。
进一步的, 所述指示信息包括以下至少一种: 所述 HARQ RTT; HARQ 进程数量; 和, 所述 HARQ进程与子帧位置的映射关系。
进一步的, 处理器 1103 , 还用于获取 HARQ进程的标识; 发射机 1102, 具体用于将所述 HARQ进程的标识和 HARQ反馈传输至所述第二通讯设备。
进一步的 ,处理器 1103 ,还用于获取与所述 HARQ进程对应的子帧位置; 发射机 1102,具体用于将所述子帧位置和所述 HARQ反馈传输至所述第二通 讯设备; 其中, 所述子帧位置包括: 所述 HARQ反馈所在的子帧位置、 或者 所述数据所在的子帧位置; 所述 HARQ进程信息包括所述子帧位置。
本实施例的基站, 通过由基站将从第一通讯设备发送的 HARQ反馈, 以 及用于标识传输数据的 HARQ进程的 HARQ进程信息转发给属于另一基站的 第二通讯设备, 实现了跨基站的 HARQ反馈的传输, 并使得该另一基站可以 根据 HARQ反馈和 HARQ进程信息确定是否重传数据。 实施例九
图 12为本发明通讯设备实施例的实体构造图,该通讯设备可以执行本发 明任意实施例的方法, 并且, 该通讯设备在下行数据传输场景中是基站, 在 上行数据传输场景中是终端。
如图 12所示, 该通讯设备可以包括: 发射机 1201、 接收机 1202和处理 器 1203; 其中,
发射机 1201 ,用于通过混合自动重传请求 HARQ进程向第一通讯设备发 送数据;
接收机 1202,用于接收主基站发送的用于标识所述 HARQ进程的 HARQ 进程信息、以及对应所述数据的 HARQ反馈,所述 HARQ反馈是所述第一通 讯设备发送至所述主基站的, 且用于反馈所述第一通讯设备通过所述 HARQ 进程接收所述数据的情况;
处理器 1203 , 用于根据所述 HARQ反馈判断是否通过所述 HARQ进程 重传所述数据。
进一步的, 接收机 1202, 还用于接收所述主基站发送的用于标识 HARQ 往返时间 RTT的指示信息, 所述指示信息是所述主基站根据所述主基站与辅 基站之间的站间传输时延确定的;
所述处理器 1203 ,还用于根据所述指示信息设定使用所述 HARQ进程传 输所述数据的所述 HARQ RTT。
进一步的, 处理器 1203 , 具体用于在所述指示信息包括所述 HARQ RTT 时, 增加本地的当前 HARQ进程数量直至将当前 HARQ RTT增加至所述
HARQ RTT。
进一步的, 处理器 1203 , 具体用于在所述指示信息包括 HARQ进程数量 时, 增加本地的当前 HARQ进程数量至所述 HARQ进程数量。
进一步的, 处理器 1203 , 具体用于在所述指示信息包括 HARQ进程与子 帧位置的映射关系时, 根据所述映射关系将 HARQ进程设置在对应的子帧位 置。
进一步的, 所述接收机 1202, 具体用于: 接收所述主基站发送的所述 HARQ进程的标识和所述 HARQ反馈; 或, 接收所述主基站发送的与所述 HARQ进程对应的子帧位置和所述 HARQ反馈; 其中, 所述子帧位置包括: 所述 HARQ反馈所在的子帧位置、 或者所述 HARQ进程传输 HARQ反馈对 应的数据所在的子帧位置。
本实施例中, 所述通讯设备为终端或辅基站。
本实施例的通讯设备 , 通过接收由主基站转发的第一通讯设备的 HARQ 的 HARQ反馈的传输, 并能够根据 HARQ反馈和 HARQ进程信息确定是否 重传数据。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步骤 可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读 取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述 的存储介质包括: ROM, RAM, 磁碟或者光盘等各种可以存储程序代码的介 质。
最后应说明的是: 以上各实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述各实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分或者全部技术特征进行等同替换; 而这些修改或者替换, 并 不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims

权 利 要 求 书
1、 一种混合自动重传请求 HARQ反馈的传输方法, 其特征在于, 包括: 接收第一通讯设备发送的 HARQ反馈,所述 HARQ反馈用于反馈所述第 一通讯设备从第二通讯设备通过 HARQ进程接收的数据情况;
将用于标识所述 HARQ进程的 HARQ进程信息和所述 HARQ反馈传输 至所述第二通讯设备, 以使得所述第二通讯设备根据所述 HARQ反馈判断是 否通过所述 HARQ进程重传所述数据。
2、 根据权利要求 1所述的 HARQ反馈的传输方法, 其特征在于, 还包 括:
当所述第一通讯设备或所述第二通讯设备为辅基站时, 获取与所述辅基 站之间的站间传输时延;
根据所述站间传输时延, 确定所述第二通讯设备使用所述 HARQ进程传 输所述数据的 HARQ往返时间 RTT;
向所述第二通讯设备发送用于标识所述 HARQ RTT的指示信息,以使得 所述第二通讯设备根据所述指示信息设定所述 HARQ RTT。
3、 根据权利要求 2所述的 HARQ反馈的传输方法, 其特征在于, 所述 向所述第二通讯设备发送用于标识所述 HARQ RTT的指示信息, 包括:
向所述第二通讯设备发送所述 HARQ RTT, 以使得所述第二通讯设备增 加当前 HARQ进程数量直至将所述第二通讯设备的当前 HARQ RTT增加至 所述 HARQ RTT。
4、 根据权利要求 2所述的 HARQ反馈的传输方法, 其特征在于, 所述 向所述第二通讯设备发送用于标识所述 HARQ RTT的指示信息, 包括:
向所述第二通讯设备发送 HARQ进程数量,所述 HARQ进程数量是根据 所述 HARQ RTT确定的, 以使得所述第二通讯设备增加当前 HARQ进程数 量至所述 HARQ进程数量。
5、根据权利要求 2-4任一项所述的 HARQ反馈的传输方法,其特征在于, 还包括:
将所述指示信息发送至所述第一通讯设备, 以使得所述第一通讯设备根 据所述指示信息调整与所述 HARQ进程对应的 HARQ緩冲区。
6、 根据权利要求 2所述的 HARQ反馈的传输方法, 其特征在于, 所述 向所述第二通讯设备发送用于标识所述 HARQ RTT的指示信息, 包括: 向所述第二通讯设备发送所述 HARQ进程与子帧位置的映射关系, 所述 映射关系是根据所述 HARQ RTT确定的,以使得所述第二通讯设备根据所述 映射关系将所述 HARQ进程设置在对应的子帧位置。
7、 根据权利要求 6所述的 HARQ反馈的传输方法, 其特征在于, 所述 所述首个 HARQ进程的使用周期表示。
8、 根据权利要求 3〜7任一所述的 HARQ反馈的传输方法, 其特征在于, 所述 HARQ进程信息包括: 所述 HARQ进程的标识。
9、 根据权利要求 1〜7任一所述的 HARQ反馈的传输方法, 其特征在于: 所述 HARQ进程信息包括子帧位置,所述子帧位置包括: 所述 HARQ反 馈所在的子帧位置、或者所述 HARQ进程传输的 HARQ反馈对应的所述数据 所在的子帧位置。
10、 根据权利要求 1〜9任一项所述的 HARQ反馈的传输方法, 其特征在 于:
当所述数据为下行传输的数据时, 所述第二通讯设备为辅基站, 所述第 一通讯设备为终端;
当所述数据为上行传输的数据时, 所述第二通讯设备为终端, 所述第一 通讯设备为辅基站。
11、 根据权利要求 1〜10任一项所述的 HARQ反馈的传输方法, 其特征 在于,所述 HARQ进程信息还包括: 所述 HARQ进程对应的服务小区的小区 标识。
12、 一种混合自动重传请求 HARQ反馈的传输方法,其特征在于, 包括: 通过 HARQ进程向第一通讯设备发送数据;
接收主基站发送的用于标识所述 HARQ进程的 HARQ进程信息、以及对 应所述数据的 HARQ反馈,所述 HARQ反馈是所述第一通讯设备发送至所述 主基站的, 且用于反馈所述第一通讯设备通过所述 HARQ进程接收所述数据 的情况;
根据所述 HARQ反馈判断是否通过所述 HARQ进程重传所述数据。
13、 根据权利要求 12所述的 HARQ反馈的传输方法, 其特征在于, 还 包括:
接收所述主基站发送的用于标识 HARQ往返时间 RTT的指示信息, 所 述指示信息是所述主基站根据所述主基站与辅基站之间的站间传输时延确定 的;
根据所述指示信息设定使用所述 HARQ进程传输所述数据的所述 HARQ
RTT。
14、 根据权利要求 13所述的 HARQ反馈的传输方法, 其特征在于, 所 述指示信息包括所述 HARQ RTT;
所述根据所述指示信息设定使用所述 HARQ进程传输所述数据的所述 HARQ RTT, 包括:
根据所述 HARQ RTT, 增加本地的当前 HARQ进程数量直至将当前 HARQ RTT增力口至所述 HARQ RTT。
15、 根据权利要求 13所述的 HARQ反馈的传输方法, 其特征在于, 所 述指示信息包括 HARQ进程数量,所述 HARQ进程数量是所述主基站根据所 述 HARQ RTT确定的;
所述根据所述指示信息设定使用所述 HARQ进程传输数据的所述 HARQ RTT, 包括:
根据所述 HARQ进程数量, 增加本地的当前 HARQ进程数量至所述 HARQ进程数量。
16、 根据权利要求 13所述的 HARQ反馈的传输方法, 其特征在于, 所 述指示信息包括所述 HARQ进程与子帧位置的映射关系, 所述映射关系是所 述主基站根据所述 HARQ RTT确定的;
所述根据所述指示信息设定使用所述 HARQ进程传输所述数据的所述 HARQ RTT, 包括:
根据所述 HARQ进程与子帧位置的映射关系将所述 HARQ进程设置在对 应的子帧位置。
17、 根据权利要求 13-16任一所述的 HARQ反馈的传输方法, 其特征在 于, 所述接收主基站发送的用于标识 HARQ进程的 HARQ进程信息, 包括: 接收所述主基站发送的所述 HARQ进程的标识。
18、 根据权利要求 12〜16任一所述的 HARQ反馈的传输方法, 其特征在 于, 所述接收主基站发送的用于标识 HARQ进程的 HARQ进程信息, 包括: 接收所述主基站发送的与所述 HARQ进程对应的子帧位置, 所述子帧位 置包括:所述 HARQ反馈所在的子帧位置、或者所述 HARQ进程传输的 HARQ 反馈对应的所述数据所在的子帧位置。
19、 根据权利要求 12-18任一项所述的 HARQ反馈的传输方法, 其特征 在于:
当所述数据为下行传输的数据时, 所述第一通讯设备为终端; 当所述数 据为上行传输的数据时, 所述第一通讯设备为辅基站。
20、 根据权利要求 12-19任一项所述的 HARQ反馈的传输方法, 其特征 在于,所述 HARQ进程信息还包括: 所述 HARQ进程对应的服务小区的小区 标识。
21、 一种基站, 其特征在于, 包括:
接收单元,用于接收第一通讯设备发送的混合自动重传请求 HARQ反馈, 所述 HARQ反馈用于反馈所述第一通讯设备从第二通讯设备通过 HARQ进程 接收的数据情况;
发送单元,用于将用于标识所述 HARQ进程的所述 HARQ进程信息和所 述 HARQ反馈传输至所述第二通讯设备, 以使得所述第二通讯设备根据所述 HARQ反馈判断是否通过所述 HARQ进程重传所述数据。
22、 根据权利要求 21所述的基站, 其特征在于, 还包括: 往返时间指示 单元; 所述往返时间指示单元包括:
站间时延获取子单元, 用于当所述第一通讯设备或所述第二通讯设备为 辅基站时, 获取与所述辅基站之间的站间传输时延;
往返时间确定子单元, 用于根据所述站间传输时延, 确定所述第二通讯 设备使用所述 HARQ进程传输所述数据的 HARQ往返时间 RTT;
指示信息确定子单元, 用于根据所述 HARQ RTT确定用于标识所述
HARQ RTT的指示信息;
指示信息发送子单元, 用于将所述指示信息发送至所述第二通讯设备, 以使得所述第二通讯设备根据所述指示信息设定所述 HARQ RTT。
23、 根据权利要求 21所述的基站, 其特征在于, 所述指示信息确定子单 元确定的所述指示信息包括以下至少一种: 所述 HARQ RTT;
HARQ进程数量; 和
所述 HARQ进程与子帧位置的映射关系。
24、 根据权利要求 22或 23所述的基站, 其特征在于,
所述发送单元,具体用于获取 HARQ进程的标识,并将所述 HARQ进程 的标识和所述 HARQ反馈传输至所述第二通讯设备。
25、 根据权利要求 21〜23任一所述的基站, 其特征在于,
所述发送单元, 具体用于获取与所述 HARQ进程对应的子帧位置, 并将 所述子帧位置和所述 HARQ反馈传输至所述第二通讯设备;
其中, 所述子帧位置包括: 所述 HARQ反馈所在的子帧位置、 或者所述
HARQ进程传输 HARQ反馈对应的所述数据所在的子帧位置。
26、 一种通讯设备, 其特征在于, 包括:
发送单元, 用于通过混合自动重传请求 HARQ进程向第一通讯设备发送 数据;
接收单元,用于接收主基站发送的用于标识所述 HARQ进程的 HARQ进 程信息、以及对应所述数据的 HARQ反馈,所述 HARQ反馈是所述第一通讯 设备发送至所述主基站的, 且用于反馈所述第一通讯设备通过所述 HARQ进 程接收所述数据的情况;
处理单元,用于根据所述 HARQ反馈判断是否通过所述 HARQ进程重传 所述数据。
27、 根据权利要求 26所述的通讯设备, 其特征在于, 还包括: 往返时间设定单元,用于接收所述主基站发送的用于标识 HARQ往返时 间 RTT的指示信息, 并根据所述指示信息设定使用所述 HARQ进程传输所 述数据的所述 HARQ RTT, 其中, 所述指示信息是所述主基站根据所述主基 站与辅基站之间的站间传输时延确定的。
28、 根据权利要求 27所述的通讯设备, 其特征在于, 所述指示信息包括 所述 HARQ RTT;
所述往返时间设定单元, 具体用于增加本地的当前 HARQ进程数量直至 将当前 HARQ RTT增力口至所述 HARQ RTT。
29、 根据权利要求 27所述的通讯设备, 其特征在于, 所述指示信息包括 HARQ进程数量, 所述 HARQ进程数量是所述主基站根据所述 HARQ RTT 确定的;
所述往返时间设定单元, 具体用于增加本地的当前 HARQ进程数量至所 述 HARQ进程数量。
30、 根据权利要求 27所述的通讯设备, 其特征在于, 所述指示信息包括 所述 HARQ进程与子帧位置的映射关系, 所述映射关系是所述主基站根据所 述 HARQ RTT确定的;
所述往返时间设定单元, 具体用于根据所述映射关系将所述 HARQ进程 设置在对应的子帧位置。
31、 根据权利要求 30所述的通讯设备, 其特征在于, 所述接收单元, 具 体用于:
接收所述主基站发送的所述 HARQ进程的标识和所述 HARQ反馈; 或 接收所述主基站发送的与所述 HARQ进程对应的子帧位置和所述 HARQ 反馈;
其中, 所述子帧位置包括: 所述 HARQ反馈所在的子帧位置、 或者所述
HARQ进程传输的 HARQ反馈对应的所述数据所在的子帧位置。
32、 根据权利要求 26〜31任一项所述的通讯设备, 其特征在于, 所述通 讯设备为终端或辅基站。
33、 一种基站, 其特征在于, 包括:
接收机, 用于接收第一通讯设备发送的混合自动重传请求 HARQ反馈, 所述 HARQ反馈用于反馈所述第一通讯设备从第二通讯设备通过 HARQ进程 接收的数据情况;
发射机,用于将用于标识所述 HARQ进程的所述 HARQ进程信息和所述 HARQ反馈传输至所述第二通讯设备, 以使得所述第二通讯设备根据所述 HARQ反馈判断是否通过所述 HARQ进程重传所述数据。
34、 根据权利要求 33所述的基站, 其特征在于, 还包括:
处理器, 用于当所述第一通讯设备或所述第二通讯设备为辅基站时, 获 取与所述辅基站之间的站间传输时延; 根据所述站间传输时延, 确定所述第 所述 HARQ RTT确定用于标识所述 HARQ RTT的指示信息; 所述发射机,还用于将标识所述 HARQ RTT的所述指示信息发送至所述 第二通讯设备, 以使得所述第二通讯设备根据所述指示信息设定所述 HARQ RTT。
35、 根据权利要求 34所述的基站, 其特征在于, 所述指示信息包括以下 至少一种:
所述 HARQ RTT;
HARQ进程数量; 和
所述 HARQ进程与子帧位置的映射关系。
36、 根据权利要求 34或 35所述的基站, 其特征在于,
所述处理器, 还用于获取 HARQ进程的标识;
所述发射机,具体用于将所述 HARQ进程的标识和所述 HARQ反馈传输 至所述第二通讯设备。
37、 根据权利要求 34或 35所述的基站, 其特征在于,
所述处理器, 还用于获取与所述 HARQ进程对应的子帧位置; 所述发射机, 具体用于将所述子帧位置和所述 HARQ反馈传输至所述第 二通讯设备;
其中, 所述子帧位置包括: 所述 HARQ反馈所在的子帧位置、 或者所述 数据所在的子帧位置; 所述 HARQ进程信息包括所述子帧位置。
38、 一种通讯设备, 其特征在于, 包括:
发射机, 用于通过混合自动重传请求 HARQ进程向第一通讯设备发送数 据;
接收机,用于接收主基站发送的用于标识所述 HARQ进程的 HARQ进程 信息、以及对应所述数据的 HARQ反馈,所述 HARQ反馈是所述第一通讯设 备发送至所述主基站的, 且用于反馈所述第一通讯设备通过所述 HARQ进程 接收所述数据的情况;
处理器,用于根据所述 HARQ反馈判断是否通过所述 HARQ进程重传所 述数据。
39、 根据权利要求 38所述的通讯设备, 其特征在于,
所述接收机, 还用于接收所述主基站发送的用于标识 HARQ往返时间 RTT的指示信息, 所述指示信息是所述主基站根据所述主基站与辅基站之间 的站间传输时延确定的;
所述处理器, 还用于根据所述指示信息设定使用所述 HARQ进程传输所 述数据的所述 HARQ RTT。
40、 根据权利要求 39所述的通讯设备, 其特征在于,
所述处理器, 具体用于在所述指示信息包括所述 HARQ RTT时, 增加本 地的当前 HARQ进程数量直至将当前 HARQ RTT增加至所述 HARQ RTT。
41、 根据权利要求 39所述的通讯设备, 其特征在于,
所述处理器, 具体用于在所述指示信息包括 HARQ进程数量时, 增加本 地的当前 HARQ进程数量至所述 HARQ进程数量。
42、 根据权利要求 39所述的通讯设备, 其特征在于,
所述处理器, 具体用于在所述指示信息包括所述 HARQ进程与子帧位置 的映射关系时,根据所述映射关系将所述 HARQ进程设置在对应的子帧位置。
43、 根据权利要求 42所述的通讯设备, 其特征在于, 所述接收机, 具体 用于:
接收所述主基站发送的所述 HARQ进程的标识和所述 HARQ反馈; 或 接收所述主基站发送的与所述 HARQ进程对应的子帧位置和所述 HARQ 反馈;
其中, 所述子帧位置包括: 所述 HARQ反馈所在的子帧位置、 或者所述 HARQ进程传输 HARQ反馈对应的数据所在的子帧位置。
44、 根据权利要求 38〜43任一项所述的通讯设备, 其特征在于, 所述通 讯设备为终端或辅基站。
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106165514A (zh) * 2015-02-09 2016-11-23 华为技术有限公司 一种rlc数据包重传方法及基站
CN107733577A (zh) * 2016-08-11 2018-02-23 华为技术有限公司 进行重传处理的方法和装置
CN108667571A (zh) * 2017-03-28 2018-10-16 中国移动通信有限公司研究院 一种实现混合自动重传请求的方法和装置
CN109997390A (zh) * 2016-11-29 2019-07-09 华为技术有限公司 一种时间差获取的方法和基站
CN110622552A (zh) * 2017-03-08 2019-12-27 诺基亚通信公司 用于通信的装置和方法
WO2020191784A1 (zh) * 2019-03-28 2020-10-01 华为技术有限公司 一种重传信息的传输方法及装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018082059A1 (zh) * 2016-11-04 2018-05-11 华为技术有限公司 Harq-ack反馈信息的传输方法及相关装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101729122A (zh) * 2008-10-24 2010-06-09 普天信息技术研究院有限公司 一种分布式中继系统传输控制信息的方法
EP2320592A1 (en) * 2009-11-06 2011-05-11 Fujitsu Limited An uplink H-ARQ signalling mechanism in a wireless communication system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4858690B2 (ja) * 2006-06-14 2012-01-18 日本電気株式会社 移動体通信システムおよびハンドオーバ時のデータ伝送方法
CN101383684B (zh) * 2007-09-07 2012-12-19 中兴通讯股份有限公司 即时反馈突发失败消息的方法
KR101861661B1 (ko) * 2010-03-15 2018-05-28 엘지전자 주식회사 무선통신 시스템에서 제어정보를 송신 및 수신하기 위한 장치 및 그 방법
US20140029558A1 (en) * 2011-04-08 2014-01-30 Nokia Siemens Networks Oy Uplink Control Signalling in a Carrier Aggregation System

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101729122A (zh) * 2008-10-24 2010-06-09 普天信息技术研究院有限公司 一种分布式中继系统传输控制信息的方法
EP2320592A1 (en) * 2009-11-06 2011-05-11 Fujitsu Limited An uplink H-ARQ signalling mechanism in a wireless communication system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106165514B (zh) * 2015-02-09 2020-07-03 诸暨市元畅信息技术咨询服务部 一种rlc数据包重传方法及基站
EP3247162A4 (en) * 2015-02-09 2018-03-07 Huawei Technologies Co., Ltd. Method for retransmitting rlc data packet and base station
US10419167B2 (en) 2015-02-09 2019-09-17 Huawei Technologies Co., Ltd. RLC data packet retransmission method and eNodeB
CN106165514A (zh) * 2015-02-09 2016-11-23 华为技术有限公司 一种rlc数据包重传方法及基站
US10903941B2 (en) 2016-08-11 2021-01-26 Huawei Technologies Co., Ltd. Retransmission processing method and apparatus
CN107733577A (zh) * 2016-08-11 2018-02-23 华为技术有限公司 进行重传处理的方法和装置
CN107733577B (zh) * 2016-08-11 2020-06-02 华为技术有限公司 进行重传处理的方法和装置
CN109997390A (zh) * 2016-11-29 2019-07-09 华为技术有限公司 一种时间差获取的方法和基站
CN110622552B (zh) * 2017-03-08 2023-09-22 诺基亚通信公司 用于通信的装置和方法
CN110622552A (zh) * 2017-03-08 2019-12-27 诺基亚通信公司 用于通信的装置和方法
US11336416B2 (en) 2017-03-08 2022-05-17 Nokia Solutions And Networks Oy Apparatus and method for communication
EP3593560A4 (en) * 2017-03-08 2020-11-25 Nokia Solutions and Networks Oy COMMUNICATION APPARATUS AND METHOD
CN108667571B (zh) * 2017-03-28 2019-06-25 中国移动通信有限公司研究院 一种实现混合自动重传请求的方法和装置
CN108667571A (zh) * 2017-03-28 2018-10-16 中国移动通信有限公司研究院 一种实现混合自动重传请求的方法和装置
WO2020191784A1 (zh) * 2019-03-28 2020-10-01 华为技术有限公司 一种重传信息的传输方法及装置

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