WO2012031482A1 - 一种混合自动重传请求的处理方法及装置 - Google Patents

一种混合自动重传请求的处理方法及装置 Download PDF

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Publication number
WO2012031482A1
WO2012031482A1 PCT/CN2011/073295 CN2011073295W WO2012031482A1 WO 2012031482 A1 WO2012031482 A1 WO 2012031482A1 CN 2011073295 W CN2011073295 W CN 2011073295W WO 2012031482 A1 WO2012031482 A1 WO 2012031482A1
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tbsnew
tbsresched
harq
harq process
information
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PCT/CN2011/073295
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English (en)
French (fr)
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谭源春
张瑞霞
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中兴通讯股份有限公司
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Publication of WO2012031482A1 publication Critical patent/WO2012031482A1/zh

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    • 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
    • H04L1/1867Arrangements specially adapted for the transmitter end
    • H04L1/1887Scheduling and prioritising arrangements
    • 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]

Definitions

  • the present invention relates to a Hybrid Automatic Repeat Request (HARQ) technology in the field of communications, and in particular, to a HARQ processing method and apparatus.
  • HARQ Hybrid Automatic Repeat Request
  • HARQ technology is a physical layer transmission technology, which includes two types of merge types: CC, Chase Combining and Incremental Redundancy.
  • the HARQ combining gain can be obtained by HARQ retransmission, and the HARQ combining type is different, and the obtained HARQ combining gain is also different.
  • the transmitted block size (TBS, Transport Block Size) is modulated and coded (MCS, Modulation and Coding Scheme) and resources used by the HARQ.
  • MCS Modulation and Coding Scheme
  • the number of blocks (RB, Resource Block) is determined.
  • the user may not need to inform the user (UE, User Equipment) of the TBS information of the HARQ transmission, or may notify the UE of the TBS information of the HARQ transmission again by using the same method as the HARQ new transmission.
  • the LTE time division duplex (TDD) mode there is a special subframe (Special Subframe), and the number of downlink orthogonal frequency division multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) symbols on the special subframe is smaller than the downlink subframe.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the number of downlink OFDM symbols on the uplink therefore, the existing 3rd Generation Partnership Project (3GPP) specification specifies that a special subframe capable of transmitting a Physical Downlink Shared Channel (PDSCH) can be transmitted.
  • 3GPP 3rd Generation Partnership Project
  • N PRB max ⁇ [N ⁇ x 0.75", l ⁇ , where N represents the number of RBs on the special subframe, and N PRB represents The number of RBs on the downlink subframe, L" indicates rounding down.
  • the downlink HARQ newly transmitted TBS on the special subframe is determined by the MCS used by the HARQ and the number of converted RBs.
  • the UE may not need to inform the UE of the TBS information of the HARQ transmission, or may notify the UE of the TBS information of the HARQ transmission again by using the same method as the HARQ new transmission.
  • the base station side detects
  • the HARQ is a discontinuous transmission (DTX) feedback.
  • DTX discontinuous transmission
  • the same HARQ process may be transmitted successively on the downlink subframe and the special subframe in the new transmission and the subsequent retransmission process; in this case, when the UE receives the HARQ new transmission
  • the TBS information of the HARQ transmission cannot be obtained, which may cause the following problems:
  • the new transmission is transmitted on a special subframe, and the number of allocated RBs is not a multiple of 4, on the downlink subframe.
  • the UE cannot be informed of the newly transmitted TBS information of the HARQ.
  • the main object of the present invention is to provide a HARQ processing method and apparatus to improve the reliability of HARQ transmission.
  • the present invention provides a hybrid automatic repeat request (HARQ) processing method, the method comprising:
  • the base station uses the idle downlink HARQ process to schedule new data of the UE ( TBSnew );
  • the base station receives a new non-acknowledgement (NACK) of the idle downlink HARQ process of the UE.
  • NACK non-acknowledgement
  • DTX discontinuous transmission
  • the TBSnew to be retransmitted is re-scheduled according to the relationship between the information size (TBSresched) and the size of the TBSnew information that can be carried by the physical resource allocated by the scheduler for the UE.
  • the physical resource includes a resource block (RB) number and a modulation and coding mode (MCS).
  • RB resource block
  • MCS modulation and coding mode
  • the base station transmits TBSnew by using the idle downlink HARQ process.
  • the TBSnew to be retransmitted is re-scheduled, specifically:
  • deltaTBS a padding bit
  • the TBSnew to be retransmitted is re-scheduled, specifically:
  • the present invention also provides a HARQ processing apparatus, the apparatus comprising:
  • a HARQ information storage module configured to store scheduling information of a HARQ process, where the scheduling information includes a physical resource allocated by the scheduler to the UE;
  • a HARQ retransmission processing module configured to: use a idle downlink HARQ process to schedule new data of the UE (TBSnew); when receiving a new non-acknowledgment (NACK) or discontinuous transmission (DTX) feedback of the idle downlink HARQ process of the UE, According to the physical resources allocated by the scheduler for the UE The relationship between the size of the information carried (TBSresched) and the size of the TBSnew information, and the retransmission of TBSnew is re-scheduled.
  • NACK non-acknowledgment
  • DTX discontinuous transmission
  • the physical resources include the number of RBs and the MCS.
  • the HARQ retransmission processing module is further configured to: when the TBSresched is equal to the TBSnew, transmit the TBSnew by using the idle downlink HARQ process.
  • the method and device for processing the HARQ provided by the present invention, when receiving the NACK or DTX feedback newly transmitted by the idle downlink HARQ process of the UE, according to the information size (TBSresched) and the information that can be carried by the physical resource allocated by the scheduler for the UE.
  • TBSnew information size relationship is re-scheduled for the retransmitted TBSnew.
  • the present invention solves the problem that the UE cannot obtain the TBS information retransmitted by the HARQ process when the UE cannot obtain the TBS information newly transmitted by the HARQ process, thereby effectively improving the reliability of the downlink HARQ transmission.
  • FIG. 1 is a flowchart of a method for processing HARQ according to the present invention
  • FIG. 2 is a schematic structural diagram of a HARQ processing apparatus according to the present invention. detailed description
  • the technical solutions of the present invention are further elaborated below in conjunction with the accompanying drawings and specific embodiments.
  • the method for obtaining the TBS information retransmitted by the HARQ process is as follows. As shown in FIG. 1, the method for processing the HARQ provided by the present invention mainly includes the following steps:
  • Step 101 The base station uses the idle downlink HARQ process (denoted as HARQnew) to schedule new data of the UE (denoted as TBSnew).
  • the TBS size of the new data is determined by the number of MCSs and RBs.
  • Step 102 When receiving the NACK or DTX feedback newly transmitted by the idle downlink HARQ process of the UE, the base station treats according to the relationship between the size of the information (referred to as TBSresched) and the size of the TBSnew information that the scheduler can allocate for the physical resource allocated by the UE.
  • TBSresched the size of the information
  • TBSnew the size of the TBSnew information that the scheduler can allocate for the physical resource allocated by the UE.
  • the retransmitted TBSnew is rescheduled.
  • the physical resources allocated by the scheduler to the UE include the number of RBs and the MCS. And according to
  • TBSresched and the TBSnew information size, and the TBSnew to be retransmitted are re-alarmed, including the following three cases:
  • the base station uses the HARQnew process to transmit TBSnew.
  • TBSresched is greater than TBSnew
  • the HARQnew process transmits TBSnew and deltaTBS
  • TBSresched is less than TBSnew
  • the HARQ process transmits.
  • the uplink and downlink subframe ratio is 1, and the HARQ processing includes the following operations:
  • Step a1 the base station uses an idle downlink HARQ process (represented by HARQnew) to schedule
  • the new data of the UE (represented by TBSnew) determines the TBS size of the new data by MCS (denoted as MCSnew) and RB number (denoted as RBNumnew).
  • Step a2 When the base station receives the newly transmitted DTX feedback of the HARQnew of the UE, the base station re-schedules the TBSnew to be retransmitted.
  • the physical resources (including the number of RBs and MCS) allocated by the scheduler for the UE are just carried.
  • the TBSnew information that is, TBSresched is equal to TBSnew, then the base station uses the HARQnew process to transmit TBSnew.
  • the uplink and downlink subframe ratio is 2, and the HARQ processing includes the following operations:
  • Step bl the base station uses an idle downlink HARQ process (represented by HARQnew) to schedule
  • the UE's new data determines the TBS size of the new data by MCS (denoted as MCSnew) and RB number (denoted as RBNumnew).
  • Step b2 When the base station receives the newly transmitted DTX feedback of the HARQnew of the UE, the base station re-schedules the TBSnew to be retransmitted.
  • the uplink and downlink subframe ratio is 6, and the HARQ processing includes the following operations:
  • Step cl the base station uses a certain idle downlink HARQ process (represented by HARQnew) to schedule new data of the UE (represented by TBSnew), and determines the TBS size of the new data by MCS (denoted as MCSnew) and the number of RBs (denoted as RBNumnew).
  • HARQnew idle downlink HARQ process
  • MCSnew new data of the UE
  • RBNumnew number of RBs
  • Step c2 When the base station receives the newly transmitted DTX feedback of the HARQnew of the UE, the base station re-schedules the TBSnew to be retransmitted.
  • TBSresched obtained by the decomposition is transmitted by the HARQnew process, and the TBSleft is placed in the next HARQ process for transmission.
  • the present invention further provides a HARQ processing apparatus.
  • the apparatus includes: a HARQ information storage module 10 and a HARQ retransmission processing module 20.
  • the HARQ information storage module 10 is configured to store scheduling information of the HARQ process, where the scheduling information includes physical resources allocated by the scheduler to the UE.
  • the HARQ retransmission processing module 20 is configured to use the idle downlink HARQ process to schedule new data of the UE ( TBSnew ); when receiving the NACK or DTX feedback newly transmitted by the idle downlink HARQ process of the UE, according to the PHY that the scheduler allocates for the UE.
  • TBSnew new data of the UE
  • the relationship between the size of the information (TBSresched) and the size of the TBSnew information that can be carried by the resource (including the number of RBs and the MCS) is re-scheduled for the retransmitted TBSnew.
  • the HARQ retransmission processing module 20 is further configured to: when the TBSresched is equal to the TBSnew, use the idle downlink HARQ process to transmit the TBSnew;
  • TBSresched is greater than TBSnew

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Description

一种混合自动重传请求的处理方法及装置 技术领域
本发明涉及通信领域的混合自动重传请求(HARQ, Hybrid Automatic Repeat Request )技术, 尤其涉及一种 HARQ的处理方法及装置。 背景技术
HARQ 技术是一种物理层传输技术, 其包含追踪合并 (CC , Chase Combining )和增量冗余 ( IR, Incremental Redundancy )这两类合并类型。 HARQ重传可以获得 HARQ合并增益, 且 HARQ合并类型不同, 获得的 HARQ合并增益也不同。
在长期演进(LTE, Long Term Evolution ) 系统中, 对于下行 HARQ新 传, 传输的数据块大小 (TBS, Transport Block Size ) 由该 HARQ使用的调 制与编码方式(MCS , Modulation and Coding Scheme )和资源块(RB , Resource Block )数决定。 对于下行 HARQ重传, 既可以不用再告知用户设 备( UE, User Equipment )该 HARQ传输的 TBS信息,也可以釆用与 HARQ 新传相同的方法再次告知 UE该 HARQ传输的 TBS信息。
在 LTE时分双工( TDD )方式中,存在一种特殊子帧( Special Subframe ), 该特殊子帧上的下行正交频分复用 ( OFDM , Orthogonal Frequency Division Multiplexing )符号数少于下行子帧上的下行 OFDM符号数; 因此, 现有的 第三代合作伙伴计划 (3GPP, The 3rd Generation Partnership Project )规范 中规定, 能够传输物理下行共享信道(PDSCH, Physical Downlink Shared Channel ) 的特殊子帧上的 RB 数折算到下行子帧上的 RB 数的公式为: NPRB = max {[N^ x 0.75」, l} , 其中, N 表示特殊子帧上的 RB数, NPRB表示 下行子帧上的 RB数, L」表示向下取整。 特殊子帧上的下行 HARQ新传的 TBS由该 HARQ使用的 MCS和折算后的 RB数决定。对于特殊子帧上的下 行 HARQ重传,既可以不用再告知 UE该 HARQ传输的 TBS信息,也可以 釆用与 HARQ新传相同的方法再次告知 UE该 HARQ传输的 TBS信息。
实际应用中, 当 UE 未能解出来下行传输的下行控制信息 (DCI , Downlink Control Information ), 而导致不对该 DCI所对应的 HARQ进行确 认或非确认 ( ACK/NACK )反馈时, 基站侧会检测到该 HARQ为非连续发 送(DTX, Discontinuous Transmission )反馈。 另外, 也存在基站将 UE反 馈的 ACK/NACK误检为 DTX的情况。
在 LTE TDD方式中,同一个 HARQ进程在新传和接下来的重传过程中, 有可能相继在下行子帧和特殊子帧上传输; 在这种情况下, 当 UE在接收 HARQ新传而未解出相应的 DCI信息时, 无法获得该 HARQ传输的 TBS 信息, 可能导致如下问题: 当新传在特殊子帧上传输, 且分配的 RB数不为 4的倍数时, 在下行子帧上重传时无法告知 UE该 HARQ上次新传的 TBS 信息; 同样的, 当新传在下行子帧上传输,且分配的 RB数不为 3的倍数时, 在特殊子帧上重传时无法告知 UE该 HARQ上次新传的 TBS信息。 上述问 题的存在, 会影响到 HARQ传输的可靠性。 发明内容
有鉴于此,本发明的主要目的在于提供一种 HARQ的处理方法及装置, 以提高 HARQ传输的可靠性。
为达到上述目的, 本发明的技术方案是这样实现的:
本发明提供了一种混合自动重传请求(HARQ )的处理方法, 该方法包 括:
基站釆用空闲下行 HARQ进程调度 UE的新数据 ( TBSnew );
所述基站在收到 UE的空闲下行 HARQ进程新传的非确认(NACK ) 或非连续发送 ( DTX )反馈时,根据调度器为所述 UE分配的物理资源能承 载的信息大小 ( TBSresched ) 与 TBSnew 信息大小的关系, 对待重传的 TBSnew重新进行调度。
其中, 所述物理资源包括资源块(RB )数和调制与编码方式(MCS )。 所述根据调度器为 UE分配的 TBSresched与 TBSnew信息大小的关系, 对待重传的 TBSnew重新进行调度, 具体为:
当 TBSresched等于 TBSnew时,基站釆用所述空闲下行 HARQ进程对 TBSnew进行传输。
所述根据调度器为 UE分配的 TBSresched与 TBSnew信息大小的关系, 对待重传的 TBSnew重新进行调度, 具体为:
当 TBSresched 大于 TBSnew 时, 基站对 TBSnew 增加填充比特 ( deltaTBS ),且满足 TBSresched=TBSnew+deltaTBS , 并釆用所述空闲下行 HARQ进程对 TBSnew和 deltaTBS进行传输。
所述根据调度器为 UE分配的 TBSresched与 TBSnew信息大小的关系, 对待重传的 TBSnew重新进行调度, 具体为:
当 TBSresched小于 TBSnew时, 基站将 TBSnew分解为 TBSresched 和剩余 TBS ( TBSleft ), 且满足 TBSresched=TBSnew-TBSleft, 并釆用所述 空闲下行 HARQ进程对分解得到的 TBSresched进行传输, 将 TBSleft放在 下一个 HARQ进程进行传输。
本发明还提供了一种 HARQ的处理装置, 该装置包括:
HARQ信息存储模块, 用于存储 HARQ进程的调度信息, 该调度信息 中包括调度器为 UE分配的物理资源;
HARQ重传处理模块, 用于釆用空闲下行 HARQ进程调度 UE的新数 据( TBSnew ); 在收到 UE的空闲下行 HARQ进程新传的非确认( NACK ) 或非连续发送( DTX )反馈时,根据调度器为所述 UE分配的物理资源能承 载的信息大小 ( TBSresched ) 与 TBSnew 信息大小的关系, 对待重传的 TBSnew重新进行调度。
所述物理资源包括 RB数和 MCS。
HARQ重传处理模块进一步用于, 在 TBSresched等于 TBSnew时, 釆 用所述空闲下行 HARQ进程对 TBSnew进行传输。
HARQ重传处理模块进一步用于, 在 TBSresched大于 TBSnew时, 对 TBSnew增加填充比特( deltaTBS ),且满足 TBSresched=TBSnew+deltaTBS, 并釆用所述空闲下行 HARQ进程对 TBSnew和 deltaTBS进行传输。
HARQ重传处理模块进一步用于, 在 TBSresched小于 TBSnew时, 将 TBSnew 分解为 TBSresched 和剩余 TBS ( TBSleft ) , 且满足 TBSresched=TBSnew-TBSleft ,并釆用所述空闲下行 HARQ进程对分解得到 的 TBSresched进行传输, 将 TBSleft放在下一个 HARQ进程进行传输。
本发明所提供的一种 HARQ的处理方法及装置, 在收到 UE的空闲下 行 HARQ进程新传的 NACK或 DTX反馈时, 根据调度器为 UE分配的物 理资源能承载的信息大小( TBSresched )与 TBSnew信息大小的关系, 对待 重传的 TBSnew重新进行调度。通过本发明,解决了 UE在无法获得某 HARQ 进程新传的 TBS信息时而导致无法进一步获得该 HARQ进程重传的 TBS 信息的问题, 从而有效的提高了下行 HARQ传输的可靠性。 附图说明
图 1为本发明一种 HARQ的处理方法流程图;
图 2为本发明一种 HARQ的处理装置的组成结构示意图。 具体实施方式
下面结合附图和具体实施例对本发明的技术方案进一步详细阐述。 为解决 UE在无法获得某 HARQ进程新传的 TBS信息时导致无法进一 步获得该 HARQ进程重传的 TBS信息的问题,本发明所提供的一种 HARQ 的处理方法, 如图 1所示, 主要包括以下步骤:
步骤 101 , 基站釆用空闲下行 HARQ进程(记为 HARQnew )调度 UE 的新数据 (记为 TBSnew )。
其中, 该新数据的 TBS大小由 MCS和 RB数决定。
步骤 102,基站在收到 UE的空闲下行 HARQ进程新传的 NACK或 DTX 反馈时, 根据调度器为该 UE 分配的物理资源能承载的信息大小 (记为 TBSresched )与 TBSnew信息大小的关系,对待重传的 TBSnew重新进行调 度。
其中, 调度器为 UE 分配的物理资源包括 RB 数和 MCS。 且根据
TBSresched与 TBSnew信息大小的关系, 对待重传的 TBSnew重新进行调 度, 具体包括以下三种情形:
1、当 TBSresched等于 TBSnew时,基站釆用 HARQnew进程对 TBSnew 进行传输;
2、 当 TBSresched大于 TBSnew时,基站对 TBSnew增加新数据或填充 比特 (记为 deltaTBS ), 且满足 TBSresched=TBSnew+deltaTBS , 并釆用
HARQnew进程对 TBSnew和 deltaTBS进行传输;
3、当 TBSresched小于 TBSnew时,基站将 TBSnew分解为 TBSresched 和剩余 TBS (记为 TBSleft ), 且满足 TBSresched=TBSnew-TBSleft, 并釆用 HARQnew进程对分解得到的 TBSresched进行传输,将 TBSleft放在下一个
HARQ进程进行传输。 在本发明实施例一的 LTE TDD系统中, 上下行子帧配比为 1 , HARQ 的处理包括以下操作:
步骤 al , 基站釆用某空闲下行 HARQ进程(用 HARQnew表示)调度 UE的新数据(用 TBSnew表示), 通过 MCS (记为 MCSnew )和 RB数(记 为 RBNumnew ) 决定该新数据的 TBS大小。
步骤 a2, 基站收到该 UE的 HARQnew新传的 DTX反馈时, 对待重传 的 TBSnew重新进行调度。
此时, 调度器为 UE分配的物理资源 (包括 RB数和 MCS ) 刚好承载
TBSnew信息, 即 TBSresched等于 TBSnew,那么基站釆用 HARQnew进程 对 TBSnew进行传输。
在本发明实施例二的 LTE TDD系统中, 上下行子帧配比为 2, HARQ 的处理包括以下操作:
步骤 bl , 基站釆用某空闲下行 HARQ进程(用 HARQnew表示 )调度
UE的新数据(用 TBSnew表示), 通过 MCS (记为 MCSnew )和 RB数(记 为 RBNumnew ) 决定该新数据的 TBS大小。
步骤 b2, 基站收到该 UE的 HARQnew新传的 DTX反馈时, 对待重传 的 TBSnew重新进行调度。
此时,调度器为 UE分配的物理资源(包括 RB数和 MCS )大于 TBSnew, 即 TBSresched 大于 TBSnew, 那么基站对 TBSnew 增加填充比特(记为 deltaTBS ),且满足 TBSresched=TBSnew+deltaTBS, 并釆用 HARQnew进程 对 TBSnew和 deltaTBS进行传输。
在本发明实施例三的 LTE TDD系统中, 上下行子帧配比为 6, HARQ 的处理包括以下操作:
步骤 cl , 基站釆用某空闲下行 HARQ进程(用 HARQnew表示 )调度 UE的新数据(用 TBSnew表示), 通过 MCS (记为 MCSnew )和 RB数(记 为 RBNumnew ) 决定该新数据的 TBS大小。
步骤 c2, 基站收到该 UE的 HARQnew新传的 DTX反馈时, 对待重传 的 TBSnew重新进行调度。 此时,调度器为 UE分配的物理资源(包括 RB数和 MCS )小于 TBSnew, 即 TBSresched小于 TBSnew, 那么基站将 TBSnew分解为 TBSresched和剩 余 TBS ( TBSleft ),且满足 TBSresched=TBSnew-TBSleft,并釆用 HARQnew 进程对分解得到的 TBSresched进行传输, 将 TBSleft放在下一个 HARQ进 程进行传输。
对应上述 HARQ的处理方法,本发明还提供了一种 HARQ的处理装置, 如图 2所示, 该装置包括: HARQ信息存储模块 10和 HARQ重传处理模 块 20。 其中, HARQ信息存储模块 10, 用于存储 HARQ进程的调度信息, 该调度信息中包括调度器为 UE分配的物理资源。 HARQ重传处理模块 20, 用于釆用空闲下行 HARQ进程调度 UE的新数据 ( TBSnew ); 在收到 UE 的空闲下行 HARQ进程新传的 NACK或 DTX反馈时, 根据调度器为 UE 分配的物理资源 (包括 RB数和 MCS ) 能承载的信息大小 (TBSresched ) 与 TBSnew信息大小的关系, 对待重传的 TBSnew重新进行调度。
较佳的, HARQ 重传处理模块 20 进一步用于, 在 TBSresched 等于 TBSnew时, 釆用空闲下行 HARQ进程对 TBSnew进行传输;
在 TBSresched大于 TBSnew时,对 TBSnew增加填充比特( deltaTBS ), 且满足 TBSresched=TBSnew+deltaTBS , 并釆用空闲下行 HARQ 进程对 TBSnew和 deltaTBS进行传输;
在 TBSresched小于 TBSnew时,将 TBSnew分解为 TBSresched和剩余 TBS ( TBSleft ) , 且满足 TBSresched=TBSnew-TBSleft , 并釆用空闲下行 HARQ 进程对分解得到的 TBSresched 进行传输, 将 TBSleft放在下一个 HARQ进程进行传输。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种混合自动重传请求 (HARQ ) 的处理方法, 其特征在于, 该方 法包括:
基站釆用空闲下行 HARQ进程调度 UE的新数据 ( TBSnew );
所述基站在收到 UE的空闲下行 HARQ进程新传的非确认 ( NACK ) 或非连续发送 ( DTX )反馈时,根据调度器为所述 UE分配的物理资源能承 载的信息大小 ( TBSresched ) 与 TBSnew 信息大小的关系, 对待重传的 TBSnew重新进行调度。
2、根据权利要求 1所述 HARQ的处理方法, 其特征在于, 所述物理资 源包括资源块( RB )数和调制与编码方式( MCS )。
3、根据权利要求 1或 2所述 HARQ的处理方法, 其特征在于, 所述根 据调度器为 UE分配的 TBSresched与 TBSnew信息大小的关系, 对待重传 的 TBSnew重新进行调度, 具体为: 当 TBSresched等于 TBSnew时, 基站 釆用所述空闲下行 HARQ进程对 TBSnew进行传输。
4、根据权利要求 1或 2所述 HARQ的处理方法, 其特征在于, 所述根 据调度器为 UE分配的 TBSresched与 TBSnew信息大小的关系, 对待重传 的 TBSnew重新进行调度, 具体为:
当 TBSresched 大于 TBSnew 时, 基站对 TBSnew 增加填充比特 ( deltaTBS ),且满足 TBSresched=TBSnew+deltaTBS , 并釆用所述空闲下行 HARQ进程对 TBSnew和 deltaTBS进行传输。
5、根据权利要求 1或 2所述 HARQ的处理方法, 其特征在于, 所述根 据调度器为 UE分配的 TBSresched与 TBSnew信息大小的关系, 对待重传 的 TBSnew重新进行调度, 具体为:
当 TBSresched小于 TBSnew时, 基站将 TBSnew分解为 TBSresched 和剩余 TBS ( TBSleft ), 且满足 TBSresched=TBSnew-TBSleft, 并釆用所述 空闲下行 HARQ进程对分解得到的 TBSresched进行传输, 将 TBSleft放在 下一个 HARQ进程进行传输。
6、 一种 HARQ的处理装置, 其特征在于, 该装置包括:
HARQ信息存储模块, 用于存储 HARQ进程的调度信息, 该调度信息 中包括调度器为 UE分配的物理资源;
HARQ重传处理模块, 用于釆用空闲下行 HARQ进程调度 UE的新数 据( TBSnew ); 在收到 UE的空闲下行 HARQ进程新传的非确认( NACK ) 或非连续发送 ( DTX )反馈时,根据调度器为所述 UE分配的物理资源能承 载的信息大小 ( TBSresched ) 与 TBSnew 信息大小的关系, 对待重传的 TBSnew重新进行调度。
7、根据权利要求 6所述 HARQ的处理装置, 其特征在于, 所述物理资 源包括 RB数和 MCS。
8、 根据权利要求 6或 7所述 HARQ的处理装置, 其特征在于, HARQ 重传处理模块进一步用于, 在 TBSresched等于 TBSnew时, 釆用所述空闲 下行 HARQ进程对 TBSnew进行传输。
9、 根据权利要求 6或 7所述 HARQ的处理装置, 其特征在于, HARQ 重传处理模块进一步用于, 在 TBSresched大于 TBSnew时, 对 TBSnew增 加填充比特(deltaTBS ), 且满足 TBSresched=TBSnew+deltaTBS, 并釆用所 述空闲下行 HARQ进程对 TBSnew和 deltaTBS进行传输。
10、根据权利要求 6或 7所述 HARQ的处理装置,其特征在于, HARQ 重传处理模块进一步用于, 在 TBSresched小于 TBSnew时, 将 TBSnew分 解 为 TBSresched 和 剩 余 TBS ( TBSleft ) , 且 满 足 TBSresched=TBSnew-TBSleft ,并釆用所述空闲下行 HARQ进程对分解得到 的 TBSresched进行传输, 将 TBSleft放在下一个 HARQ进程进行传输。
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