阅读说明：本技术 无线通信系统中的混合传输时间间隔(tti)长度的传输块解码操作 (The transmission block decoding operate of mixed transport time interval (TTI) length in wireless communication system ) 是由 何宏 A·达维多夫 熊岗 权桓俊 崔杰 D·查特吉 A·尼姆巴尔克 赵俊暎 李大远 于 2018-04-27 设计创作，主要内容包括：用于减少诸如LTE和/或无线电(NR)的下一代无线网络中的延迟的方法和架构,在各种实施例中,包括调整混合自动重复请求(HARQ)技术以选择性地跳过确认(ACKs),并且该方法和架构用于根据存在于接收的下行链路控制信息(DCI)中的代码块组索引位图来配置指定用于重传的代码块的一个或多个代码块组(CBG)。(The method and framework of the delay in next generation wireless network for reducing such as LTE and/or radio (NR), in various embodiments, including adjustment mixed automatic repeat request (HARQ) technology to be selectively skipped over confirmation (ACKs), and this method and framework are for configuring the one or more code block groups (CBG) for specifying the code block for re-transmission according to the code block group index bitmap being present in received down link control information (DCI).)

1. one kind is used for device of the communication equipment of user equipment (UE) to communicate in the wireless network, described device includes:

Baseband processing circuitry, including one or more processors, one or more of processors are specified for configuring for weight One or more code block groups (CBG) of the code block of biography, according to present at received down link control information (DCI) Code block group index bitmap configures the code block group；And

It is couple to the interconnection interface of the baseband processing circuitry, is used for so that one or more of processors are via interconnection bus Signal is transmitted at least one the UE inter-module selected from the group for including the following terms, described group includes: dual-band radios Frequency (RF) transceiver, memory circuit, application processor and digital signal processor (DSP).

2. the apparatus according to claim 1, wherein described in being provided in the DCI as new radio (NR) node B (gNB) CBG index.

3. the apparatus according to claim 1, wherein each bit in the bitmap indicates whether CBG to be retransmitted.

4. the apparatus according to claim 1, wherein the baseband processor is for configuring multiple CBG, and wherein for The CB is grouped into described by all transmission blocks (TB) of quantity of the quantity with code block (CB) greater than configured CBG Configure the CBG of quantity.

5. the apparatus according to claim 1, wherein the baseband processor is for configuring multiple CBG, and wherein for It is less than all transmission blocks (TB) of the quantity with CB quantity, the single CBG based on transport block size (TBS) value is used only； And wherein the CB is essentially homogeneously divided when the quantity of the CB is greater than or equal to the quantity of the CBG of the configuration Group arrives CBG.

6. the apparatus according to claim 1, wherein not including the CBG index bit for dispatching initial data transfer DCI Figure, and it is inserted into zero padding wherein to replace the CBG index bitmap.

7. device described in any one of -6 according to claim 1, wherein by higher level via NR Master Information Block (MIB), NR At least one of remaining Master Information Block (MMIB), NR system information block (SIB) or radio resource control (RRC) signaling are come pre- The maximum quantity (N) of definition or configuration CBG.

8. device described in any one of -6 according to claim 1, wherein the ratio of the CGG index bitmap in the DCI Index of the special position instruction for re-transmission.

9. device described in any one of -6 according to claim 1, wherein according to for the scheduled of initial transmission and re-transmission The quantity of CBG determine the quantity of mixed automatic repeat request-confirmation (HARQ-ACK) feedback bits position.

10. a kind of device for wireless telecom equipment to communicate in the wireless network, described device include:

Processing circuit is configured to provide for down link control information (DCI) to dispatch the transmission of one or more mobile devices；With

Network interface, for providing the connection of mobile subscriber to core Internet protocol (IP) network；The wherein processing circuit Generating includes the downlink control signal (DCI) for being used for the bitmap index of code block group (CBG), and user equipment (UE) uses should Downlink control signal is to be used for retransmission request.

11. device according to claim 10, wherein the index indicates that the UE configures multiple CBG, and wherein right In all transmission blocks (TB) for being less than the CBG quantity with CB quantity, it is used only single based on transport block size (TBS) value CBG；And wherein when quantity of the quantity of the CB more than or equal to the CBG of the configuration, essentially homogeneously by the CB It is grouped into CBG.

12. device according to claim 10, wherein not including the CBG index for dispatching initial data transfer DCI Bitmap, and it is inserted into zero padding wherein to replace the CBG index bitmap.

13. device according to claim 10, wherein from the processing circuit for being sent to UE via NR main information In block (MIB), NR residue Master Information Block (MMIB), NR system information block (SIB) or radio resource control (RRC) signaling extremely The maximum quantity (N) for lacking one to predefine or configure CBG.

14. device described in any one of 0-13 according to claim 1, wherein the CBG index bitmap in the DCI Index of the bit sequence instruction for re-transmission.

15. device described in any one of 0-13 according to claim 1, wherein being used for the HARQ-ACK of the CBG based on re-transmission The bit sequence of feedback follows the CBG bitmap index in the DCI Schedule retransmission.

16. device described in any one of 0-13 according to claim 1, wherein being used for the HARQ- of the CBG based on re-transmission The bit of ACK feedback is since first.

17. according to the method described in claim 1, wherein when semi-static HARQ-ACK payload and dynamic HARQ-ACK are effective When the size determination of load is supported by the CBG based on re-transmission, by the big of processing circuit selection HARQ-ACK payload Small determination, and provided from higher level via NR MIB, NR MMIB, NR SIB or RRC signaling to UE.

18. a kind of computer-readable medium for storing executable instruction, in response to executing, at the base band for making user equipment (UE) The one or more processors of reason circuit are able to carry out operation, and the operation includes:

One or more code block groups (CBG) of the code block for re-transmission are specified in configuration, according in received downlink control Code block group index bitmap present in information (DCI) processed configures the code block group；

According to the index bitmap transmissions CBG.

19. computer-readable medium according to claim 18, wherein from down link control information from from NR master In block of information (MIB), NR residue Master Information Block (MMIB), NR system information block (SIB) or radio resource control (RRC) signaling At least one maximum quantity (N) to predefine or configure CBG.

20. computer-readable medium according to claim 18, wherein the ratio of the CBG index bitmap in the DCI Index of the special position instruction for re-transmission.

21. computer-readable medium according to claim 18, wherein the HARQ-ACK for the CBG based on re-transmission is fed back Bit follow the CBG bitmap index in the DCI Schedule retransmission.

22. computer-readable medium described in 8-21 according to claim 1, wherein being used for the HARQ- of the CBG based on re-transmission The bit of ACK feedback is since first.

23. computer-readable medium described in 8-21 according to claim 1, wherein not wrapped for dispatching initial data transfer DCI The CBG index bitmap is included, and is inserted into zero padding wherein to replace the CBG index bitmap.

Background technique

The embodiment of the present invention is usually directed to wireless communication, and more specifically, but be not limited to, for next-generation wireless The communication format and agreement of new type used in network.

The exploitation such as next generation wireless network of 3GPP LTE is continually striving to cause the increasingly complicated of solution, with branch Hold capacity, data requirements and the use pattern of more and more Global Subscribers.New radio (NR) is various new opplications and device Radio function is brought, and must be compatible with the LTE standard for certain form of communication.

Mixed automatic repeat request (mixing ARQ or HARQ) is the combination of high speed Forward Error Correction coding and ARQ error control. In standard ARQ, redundant digit is added to error detection (ED) code transfer that use such as cyclic redundancy check (CRC) Data.The receiver for detecting the message damaged will request the new information from transmitter.In mixing ARQ, initial data is used Forward Error Correction (FEC) code coding, and when receiver detects error message, parity check bit together with the message immediately It sends, or is only transmitted in request.The data for entering control (MAC) layer from data link layer or medium are being known as transmitting It is provided at the physical layer in LTE system in the segmentation of block (TB).It is each Transmission Time Interval under single antenna transmission mode Generate a TB.Transport block size is determined by the quantity and MCS (modulation and encoding scheme) of Physical Resource Block (NPRB).

Advanced (LTE-A) Rel.15 of LTE- is provided recently in tradition (legacy) 1 millisecond of subframe lengths TTI and is known as Between lending rent (lessor) the duration T TI of " shortening " or " sub-slots (subslot) " TTI scale UL/DL LTE without The Transmission Time Interval (TTI) of line electricity frame, wherein the data in the transmission block being sent in LTE physical layer frame/subframe.Transmission block (TB) it is divided into smaller size code block (CB) in LTE, in the channel coding/rate-matched mould being applied in LTE physical layer It is known as code block segmentation before block.

The various delay requirements in LTE can be influenced by shortening Transmission Time Interval.Especially with regard to for have 2- symbol and The HARQ processing of the sTTI length of 1- sub-slots configuration.It is tool that these improvement are combined in a manner of efficient, feasible and back compatible It is challenging, and need further improve.In particular it is required that a kind of handle for the various difference TTI duration is mixed Close the exact way of automatic repeat request (HARQ).

Detailed description of the invention

With reference to attached drawing, only by way of non-limiting example, certain circuits, logical operation, equipment and/or method will be described, In:

Fig. 1 shows the simplification figure that there is selectivity to skip decoded wireless communication according to various embodiments of the present invention；

Fig. 2 shows the diagram of the communication between UE and eNB/gNB and according to various inventive aspects for skipping HARQ Another embodiment of process；

Fig. 3 is shown selectively to be solved for the HARQ based on time window with mixed transport time interval (TTI) length The exemplary diagram of the method for code；

What the example for dynamic RS position instruction that Fig. 4 shows certain example embodiments according to the present invention was signaled shows Figure；

Fig. 5 show according to other embodiments of the invention skip showing for decoded method for HARQ message transmission Figure；

Fig. 6 is the encoding samples rope for showing the down link control information for providing code block group information to transmitting device The block diagram drawn；

Fig. 7-11 shows the various realities of the bitmap index of code block group (CBG) used in the new radio wireless network of 5G Apply example；And

Figure 12 shows certain functions of the various embodiments for executing the disclosure and such as user equipment (UE) of feature Wireless device example block diagram.

Specific embodiment

It is described in detail below to refer to attached drawing.Identical Ref. No. can use in different drawings, identical to identify Or similar element.In the following description, following detailed description, it elaborates such as specific structure, framework, connect The detail of mouth, technology etc., in order to provide the thorough understanding of the various aspects to various embodiments.However, for benefiting from The disclosure it should be apparent to those skilled in the art that the various aspects of various embodiments can be detached from tool discussed in this article It is practiced in other examples of body details.In some cases, the description of well-known device, circuit and method is omitted, in order to avoid The description of various embodiments is obscured with necessary details.

LTE radio frame has 10 milliseconds of length, and is divided into the subframe (n) for the equal sizes that 10 length are 1 millisecond, Each subframe is made of 14 OFDM symbols.For downlink and uplink, scheduled transmission is completed on the basis of subframe. In the fdd mode, each traditional (i.e. R8/R9) subframe is by for being 0.5 milli with two length of 20 time slots of maximum of a frame The time slot composition of the equal sizes of second.Each time slot is made of the multiple OFDM symbols transmitted for data in turn, can be with It is seven (normal cyclic prefix) or six (extended cyclic prefix).3GPP TS 36.211v.15.0.0 (2017-12) leads to It crosses with reference to being entirely incorporated into herein, 1 frame of physical layer type (fdd mode) is further defined as by referred to as " version 15 " or R15, LTE 10 milliseconds of radio frames with 10 subframes, 20 time slots, or now, additionally, up to 60 sub-slots can be used for adjusting Downlink transmission is spent, and identical up to 60 sub-slots are used to transmit with the uplink of every 10 milliseconds of radio frames.

Transmission Time Interval (TTI) is related to data from higher level, i.e. MAC PDU or segmentation MPDU are in radio link The encapsulation in subframe transmitted on road floor or physics (PHY) floor.Before R15, when the TTI with 1 millisecond of subframe is the minimum of LTE Between unit, wherein network access station, such as Fig. 1 eNB 125, can dispatch UE 110 for uplink transmission or downlink Transmission.If UE 110 is receiving down link data, during each 1 millisecond of subframe, eNB 125 will be by under physics Index in Uplink Control Channel (PDCCH) channel distributes resource and notifies where user finds its down link data. The mistake due to the decline to radio link and caused by interfering in order to prevent, splits data into transmission block at transmitter, and Then the bit in block is encoded and is interweaved.Transmitting time span required for such transmission block is TTI.It is passing It unites in LTE, TTI is 1 millisecond of subframe.

As previously mentioned, the LTE R15 of referred to as kilomegabit LTE provides a kind of new ability for expansible duration T TI, The new ability includes scheduling in as little as 2 OFDM symbols (i.e. with 7 sub-slots of each 1 millisecond of subframe), up to 7 OFDM " shortening " or " sub-slots " Transmission Time Interval (" sTTI ") used between symbol, to pass through mixed automatic repeat request (HARQ) error detection and correction makes to receive and transmit more effective.

Packet data delay is the key performance metrics for the wireless communication system of such as LTE, to improve user experience. Packet data delay is critically important not only for the system responsiveness perceived；It is also the parameter for influencing handling capacity.HTTP/TCP It is the main application and transport layer protocol external member used on current internet.3GPP uses the TTI shortened, to help to improve The packet data of LTE system postpones.As for LTE version 15, for the turnover of the UE HARQ confirmation (HARQ-ACK) of 1 millisecond of TTI Time is 4 milliseconds.

With reference to Fig. 1, if physical downlink control channel (PDCCH) and physical down link sharing channel (PDSCH) It is transmitted to UE with subframe n, then the UE can transmit the ACK or the machine ACK of affirmative with subframe n+4.Frame is decoded for parallel PDSCH Structure, the requirement are converted to the implementation of 4 PDSCH decoding blocks, wherein each piece should be able to be a with every 4 milliseconds or 3 milliseconds of 1-2 Transmission block (TB) decodes a PDSCH, as shown in the figure.Compared with 1 millisecond of traditional TTI, for shared in physical down link The HARQ-ACK timeline of channel or the TTI of the shortening in " sPDSCH " 150 needs reduce significantly, it is possible to realize and reduce Delay benefit.Therefore, the sPDSCH 150 for decoding shortening must start once receiving, and cannot be as 1 millisecond PDSCH pipelines processing 110-140 like that.

For TTI (sTTI) communication of the shortening in LTE, decision is that UE can be dynamically (with subframe to subframe granularity) It is dispatched together with 1 millisecond of TTI unicast PDSCH 110-140 and/or sTTI unicast PDSCH 150 of tradition, as shown in Figure 1.Due to Entirely different processing time requirement, handling, there is the processing of the unicast PDSCHs and sPDSCH of different TTI length to become very It is challenging, it is especially considering that limited UE processing capacity.

According to some embodiments, the difficulty of the above-mentioned transmission block decoding problem for sPDSCH and PDSCH is avoided, and Lower delay can be realized in the case where no hardware modifications or increase installation cost.In certain embodiments, this can lead to It crosses s-PDCCH operation to realize, the s-PDCCH operation can at least connect in decoding time window peviform object (basin) In the summation of the transport block size (TBS) of receipts, it is selectively skipped over decoding all or part PDSCH.The additional implementation of the disclosure Example can dynamically signal reference signal (RS) configuration, to minimize the RS with the upper surface of full flexibility.RS matches Set including in sTTI position and density.The other embodiment of the disclosure realizes the relevant HARQ- of timing advance (TA) ACK timeline and PUSCH scheduling time line determine.

With reference to Fig. 2, according to one embodiment of present invention, one kind being provided by restriction specific information unit (IE) and is used for Be reported in the unknowable mode field of frequency band with single DL subframe and meanwhile decode sPDSCH and PDSCH UE ability method 200. Particularly, if UE indicates in single 1 millisecond of TTI sPDSCH and PDSCH received support while in component carrier, UE PDSCH can be decoded in addition to sPDSCH with 1 millisecond of subframe, and also provide HARQ-ACK for PDSCH and sPDSCH.Otherwise, UE can decode sPDSCH, and not require to decode received PDSCH with identical subframe.HARQ-ACK is generated, UE can To provide HARQ-ACK for the sPDSCH for being subjected to decoding result, but non-acknowledgement " NACK " can be fed back only for PDSCH.

As shown, UE#1 instruction uses sPDSCH/PDSCH information unit (IE), at single 1 millisecond in Fig. 2 SPDSCH/PDSCH cannot be carried out in TTI simultaneously.Then, UE#1 can receive sPDSCH respectively with subframe n-2, n-1 and n Stop or skip the decoding of PDSCH 220/250/260 when 230/240/270 and is correspondingly arranged for HARQ-ACK feedback "NACK".According to other embodiments, by determining data decoding time window using stopping or skip decoding earlier PDSCH or sPDSCH 290, such as 220 in Fig. 2 and 230 provide sPDSCH/PDSCH decoding enhancing, with minimum pair The influence of the HARQ processing of PDSCH.

In some designs, with reference to Fig. 3, the method 300 for the decoding technique based on time window provides dynamic PDSCH/sPDSCH decoding determines, i.e., the PDSCH 310-340 of multiple subframe schedulings with time window 300 is continued to decode Or stop (referred to as " skipping decoding "), terminate at the subframe n comprising corresponding sPDSCH 350 or 360.Assuming that for subframe/ Time slot n, for example, the size N of time-domain decoding window (for example, time window 300 of Fig. 3) include subframe/time slot n to subframe/ Time slot m (is expressed as subframe 380-395).In FDD system, subframe or time slot be can be continuously, such as subframe n, n-1, n+N- 1.However, these subframes or time slot cannot be continuously, because not being every in time for time division duplex (TDD) system A subframe/time slot is all downlink subframe.