WO2018099039A1 - Mcs信息指示方法、mcs信息指示装置、基站及终端 - Google Patents

Mcs信息指示方法、mcs信息指示装置、基站及终端 Download PDF

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WO2018099039A1
WO2018099039A1 PCT/CN2017/087976 CN2017087976W WO2018099039A1 WO 2018099039 A1 WO2018099039 A1 WO 2018099039A1 CN 2017087976 W CN2017087976 W CN 2017087976W WO 2018099039 A1 WO2018099039 A1 WO 2018099039A1
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tti
type
mcs
value
downlink control
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PCT/CN2017/087976
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English (en)
French (fr)
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付婷
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珠海市魅族科技有限公司
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Publication of WO2018099039A1 publication Critical patent/WO2018099039A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

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  • the present invention relates to the field of communications technologies, and in particular, to an MCS information indication method, an MCS information indication apparatus, a base station, and a terminal.
  • the latency of the user data is required to be as short as possible.
  • the TTI (Transmission Time Interval) adopted by the current LTE system is 1 ms, that is, one subframe, the transmitting end sends a data block every 1 ms, and the receiving end can receive one data block every 1 ms.
  • sTTI short-TTI
  • sTTI short-TTI
  • some literatures such as [R1-160942][R1-160930] quantitatively studied the influence of the decrease of TTI duration on the delay of LTE data.
  • the analysis shows that the use of sTTI is not only the base station, but the transmission interval of the terminal becomes shorter, correspondingly The data processing time corresponding to the transmission interval is also reduced, for example, the data encoding modulation and the data demodulation time are reduced as the data block size is reduced.
  • a UE User Equipment
  • MCS Modulation and Coding Scheme
  • the legacy TTI if the user is scheduled in the dynamic scheduling mode, 5 bits are used in the DCI (Downlink Control Information) sent to the scheduled user in each TTI to indicate the scheduled TTI.
  • the MCS used if the sTTI is used in the sTTI, the legacy TTI usually includes multiple sTTIs, and more resources are needed to carry the MCS information in a unit time. There is a large overhead for the downlink control information. For this, there is no effective solution.
  • the present invention is based on at least one of the above technical problems, and proposes a new MCS information indication scheme, which can effectively reduce the overhead of downlink control information.
  • the present invention provides an MCS information indication method, for a base station, including: configuring MCS information for a first type of TTI and a second type of TTI in target downlink control information, where the first type of TTI The duration is an integer multiple of the duration of the second type of TTI, the first type of TTI is configured with a reference MCS value, and the second type of TTI is configured with an offset value, the offset value indicating the second type of TTI
  • the offset value of the actual MCS value relative to the reference MCS value is used to indicate that the number of bits of the reference MCS value is greater than the number of bits used to indicate the offset value; and the target downlink control information is sent to the terminal, Instructing the terminal to determine an actual MCS value of the second type of TTI.
  • the reference MCS value is configured for the first type of TTI in the target downlink control information
  • the offset value is configured for the second type of TTI
  • the number of bits used to indicate the reference MCS value is greater than the value used to indicate the offset value. The number of bits, thereby reducing the number of bits required to indicate MCS information, effectively reducing the overhead of downlink control information.
  • the reference MCS value is an actual MCS value of any one of the second type of TTIs.
  • the reference MCS value is the actual MCS value of any TTI in the second type of TTI
  • the number of bits required to indicate the offset value of the TTI is 0, thereby further reducing the downlink control information. s expenses.
  • the reference MCS value can also take other values, and is not limited to the actual MCS value of any TTI in the second type of TTI.
  • the step of transmitting the target downlink control information to the terminal specifically includes: sending, to the terminal, the physical layer downlink control signaling for the first type of TTI a reference MCS value; for the second type of TTI, sending the offset value to the terminal based on physical layer downlink control signaling.
  • a method for indicating an MCS information comprising: receiving target downlink control information sent by a base station, where the target downlink control information is configured with a reference MCS of a first type of TTI And a value of the offset of the second type of TTI, where the offset value represents an offset value of the actual MCS value of the second type of TTI relative to the reference MCS value, where the duration of the first type of TTI is An integer multiple of the duration of the second type of TTI, the number of bits indicating the reference MCS value is greater than the number of bits used to indicate the offset value; determining the number according to the reference value and the offset value The actual MCS value of the second type of TTI.
  • the terminal receives the target downlink control information sent by the base station, and determines an actual MCS value of the second type of TTI according to the reference value and the offset value, where the first type of TTI is configured in the target downlink control information.
  • a reference MCS value and an offset value of the second type of TTI and the number of bits used to indicate the reference MCS value is greater than the number of bits used to indicate the offset value, thereby reducing the number of bits required to indicate the MCS information, effectively reducing the number of bits
  • the overhead of the downlink control information ensures that the terminal can accurately determine the actual MCS value of the second type of TTI.
  • an MCS information indicating apparatus for a base station, including: a configuration unit, configured to configure MCS information for the first type of TTI and the second type of TTI in the target downlink control information, where The duration of the first type of TTI is an integer multiple of the duration of the second type of TTI, the first type of TTI is configured with a reference MCS value, and the second type of TTI is configured with an offset value, the offset value And an offset value of the actual MCS value of the second type of TTI relative to the reference MCS value, used to indicate that the number of bits of the reference MCS value is greater than a number of bits used to indicate the offset value; And sending the target downlink control information to the terminal, to instruct the terminal to determine an actual MCS value of the second type of TTI.
  • the reference MCS value is configured for the first type of TTI in the target downlink control information
  • the offset value is configured for the second type of TTI
  • the number of bits used to indicate the reference MCS value is greater than the value used to indicate the offset value. The number of bits, thereby reducing the number of bits required to indicate MCS information, effectively reducing the overhead of downlink control information.
  • the reference MCS value is an actual MCS value of any one of the second type of TTIs.
  • the reference MCS value is the actual MCS value of any TTI in the second type of TTI
  • the number of bits required to indicate the offset value of the TTI is 0, thereby further reducing the downlink control information. s expenses.
  • the reference MCS value can also take other values, and is not limited to the actual MCS value of any TTI in the second type of TTI.
  • the sending unit is configured to: send, according to the physical layer downlink control signaling, the reference MCS value to the terminal, for the first type of TTI;
  • the second type of TTI sends the offset value to the terminal based on physical layer downlink control signaling.
  • an MCS information indicating apparatus for a terminal, comprising: a receiving unit, configured to receive target downlink control information sent by a base station, where the target downlink control information is configured with a first a reference MCS value of a TTI-like type and an offset value of a second type of TTI, the offset value indicating an offset value of an actual MCS value of the second type of TTI relative to the reference MCS value, the first type of TTI
  • the duration of the second type of TTI is an integer multiple of the duration of the second type of TTI, the number of bits used to indicate the reference MCS value is greater than the number of bits used to indicate the offset value
  • the determining unit is configured to use the reference value and The offset value determines an actual MCS value of the second type of TTI.
  • the terminal receives the target downlink control information sent by the base station, and determines an actual MCS value of the second type of TTI according to the reference value and the offset value, where the first type of TTI is configured in the target downlink control information.
  • a reference MCS value and an offset value of the second type of TTI and the number of bits used to indicate the reference MCS value is greater than the number of bits used to indicate the offset value, thereby reducing the number of bits required to indicate the MCS information, effectively reducing the number of bits
  • the overhead of the downlink control information ensures that the terminal can accurately determine the actual MCS value of the second type of TTI.
  • a base station comprising: the MCS information indicating apparatus according to any one of the above aspects.
  • a terminal comprising: the MCS information indicating device according to any one of the above aspects.
  • a base station is further provided, the base station comprising a processing device, wherein the processing device is configured to implement any one of the technical solutions of the first aspect as described above when the computer program stored in the storage device is executed
  • the MCS information is described as a step of the method.
  • a computer device comprising a processor, the processor for implementing the MCS as described in the technical solution of the second aspect, when the computer program is executed in a memory The steps of the information indicating method.
  • a computer storage medium is further provided, wherein computer instructions are stored thereon, and when the computer instructions are executed by a processor, implementing any one of the first aspect or the second aspect
  • the MCS information is described as a step of the method.
  • FIG. 1 is a schematic flow chart showing an MCS information indicating method according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart showing an MCS information indicating method according to another embodiment of the present invention.
  • FIG. 3 shows a schematic block diagram of an MCS information indicating apparatus according to an embodiment of the present invention
  • FIG. 4 is a schematic block diagram of an MCS information indicating apparatus according to another embodiment of the present invention.
  • Figure 5 shows a schematic block diagram of a base station in accordance with an embodiment of the present invention
  • Figure 6 shows a schematic block diagram of a terminal in accordance with an embodiment of the present invention.
  • Figure 7 shows a schematic block diagram of a base station of another embodiment of the present invention.
  • Figure 8 shows a schematic block diagram of a computer device of an embodiment of the present invention.
  • FIG. 1 shows a schematic flow chart of an MCS information indicating method according to an embodiment of the present invention.
  • an MCS information indication method is used for a base station, including:
  • Step 102 Configure MCS information for the first type of TTI and the second type of TTI in the target downlink control information, where the duration of the first type of TTI is an integer multiple of the duration of the second type of TTI, where the first The class TTI is configured with a reference MCS value, and the second type of TTI is configured with an offset value, the offset value indicating an offset value of the actual MCS value of the second type of TTI relative to the reference MCS value, for The number of bits indicating the reference MCS value is greater than the number of bits used to indicate the offset value.
  • Step 104 Send the target downlink control information to the terminal, to instruct the terminal to determine an actual MCS value of the second type of TTI.
  • the reference MCS value is configured for the first type of TTI in the target downlink control information
  • the offset value is configured for the second type of TTI
  • the number of bits used to indicate the reference MCS value is greater than the value used to indicate the offset value. The number of bits, thereby reducing the number of bits required to indicate MCS information, effectively reducing the overhead of downlink control information.
  • the reference MCS value is an actual MCS value of any one of the second type of TTIs.
  • the reference MCS value is the actual MCS value of any TTI in the second type of TTI
  • the number of bits required to indicate the offset value of the TTI is 0, thereby further reducing the downlink control information. s expenses.
  • the reference MCS value can also take other values, and is not limited to the actual MCS value of any TTI in the second type of TTI.
  • the first type of TTI is set to one legacy TTI
  • the second type of TTI is one sTTI
  • one legacy TTI includes four sTTIs, if dynamic in each sTTI
  • the actual MCS of the 3bit flag sTTI is used in this embodiment.
  • the MCS used by a user will be concentrated in a certain range. Considering that sTTI is generally applied to medium and low-speed mobile environments with better channel conditions, the time variation of channels in low- and medium-speed mobile environments. Generally, the channel conditions are relatively consistent. Therefore, the MCS concentrated in a certain range within a legacy TTI may have negligible impact on the channel matching.
  • the step of transmitting the target downlink control information to the terminal specifically includes: sending, to the terminal, the physical layer downlink control signaling for the first type of TTI a reference MCS value; for the second type of TTI, sending the offset value to the terminal based on physical layer downlink control signaling.
  • FIG. 2 shows a schematic flow chart of an MCS information indicating method according to another embodiment of the present invention.
  • an MCS information indication method is used for a terminal, including:
  • Step 202 Receive target downlink control information sent by the base station, where the target downlink control information is configured with a reference MCS value of the first type of TTI and an offset value of the second type of TTI, where the offset value indicates the first
  • the duration of the first type of TTI is an integer multiple of the duration of the second type of TTI
  • the bit used to indicate the reference MCS value The number is greater than the number of bits used to indicate the offset value.
  • Step 204 Determine an actual MCS value of the second type of TTI according to the reference value and the offset value.
  • the terminal receives the target downlink control information sent by the base station, and the root Determining an actual MCS value of the second type of TTI according to the reference value and the offset value, wherein the target MCS value of the first type of TTI and the offset value of the second type of TTI are configured in the target downlink control information, and are used to indicate the reference
  • the number of bits of the MCS value is greater than the number of bits used to indicate the offset value, thereby reducing the number of bits required to indicate MCS information, effectively reducing the overhead of downlink control information, and ensuring that the terminal can accurately determine the second type of TTI.
  • the actual MCS value is greater than the number of bits used to indicate the offset value, thereby reducing the number of bits required to indicate MCS information, effectively reducing the overhead of downlink control information, and ensuring that the terminal can accurately determine the second type of TTI.
  • FIG. 3 shows a schematic block diagram of an MCS information indicating apparatus according to an embodiment of the present invention.
  • an MCS information indicating apparatus 300 for a base station includes: a configuration unit 302 and a transmitting unit 304.
  • the configuration unit 302 is configured to configure MCS information for the first type of TTI and the second type of TTI in the target downlink control information, where the duration of the first type of TTI is an integer multiple of the duration of the second type of TTI,
  • the first type of TTI is configured with a reference MCS value
  • the second type of TTI is configured with an offset value, the offset value indicating an offset of an actual MCS value of the second type of TTI relative to the reference MCS value.
  • a value, the number of bits used to indicate the reference MCS value is greater than the number of bits used to indicate the offset value
  • the sending unit 304 is configured to send the target downlink control information to the terminal, to instruct the terminal to determine the The actual MCS value of the second type of TTI.
  • the reference MCS value is configured for the first type of TTI in the target downlink control information
  • the offset value is configured for the second type of TTI
  • the number of bits used to indicate the reference MCS value is greater than the value used to indicate the offset value. The number of bits, thereby reducing the number of bits required to indicate MCS information, effectively reducing the overhead of downlink control information.
  • the reference MCS value is an actual MCS value of any one of the second type of TTIs.
  • the reference MCS value is the actual MCS value of any TTI in the second type of TTI
  • the number of bits required to indicate the offset value of the TTI is 0, thereby further reducing the downlink control information. s expenses.
  • the reference MCS value can also take other values, and is not limited to the actual MCS value of any TTI in the second type of TTI.
  • the sending unit 304 is specifically configured to: send, according to the physical layer downlink control signaling, the reference MCS value to the terminal, for the first type of TTI;
  • the second type of TTI is sent to the terminal based on physical layer downlink control signaling.
  • the offset value is specifically configured to: send, according to the physical layer downlink control signaling, the reference MCS value to the terminal, for the first type of TTI;
  • the second type of TTI is sent to the terminal based on physical layer downlink control signaling.
  • the offset value is specifically configured to: send, according to the physical layer downlink control signaling, the reference MCS value to the terminal, for the first type of TTI.
  • FIG. 4 shows a schematic block diagram of an MCS information indicating apparatus according to another embodiment of the present invention.
  • an MCS information indicating apparatus 400 is used for a terminal, including: a receiving unit 402 and a determining unit 404.
  • the receiving unit 402 is configured to receive target downlink control information that is sent by the base station, where the target downlink control information is configured with a reference MCS value of the first type of TTI and an offset value of the second type of TTI, where the offset value is And indicating an offset value of the actual MCS value of the second type of TTI relative to the reference MCS value, where the duration of the first type of TTI is an integer multiple of the duration of the second type of TTI, used to indicate the reference The number of bits of the MCS value is greater than the number of bits used to indicate the offset value; the determining unit 404 is configured to determine an actual MCS value of the second type of TTI according to the reference value and the offset value.
  • the terminal receives the target downlink control information sent by the base station, and determines an actual MCS value of the second type of TTI according to the reference value and the offset value, where the first type of TTI is configured in the target downlink control information.
  • a reference MCS value and an offset value of the second type of TTI and the number of bits used to indicate the reference MCS value is greater than the number of bits used to indicate the offset value, thereby reducing the number of bits required to indicate the MCS information, effectively reducing the number of bits
  • the overhead of the downlink control information ensures that the terminal can accurately determine the actual MCS value of the second type of TTI.
  • Figure 5 shows a schematic block diagram of a base station in accordance with an embodiment of the present invention.
  • a base station 500 includes: an MCS information indicating apparatus 300 as shown in FIG.
  • Figure 6 shows a schematic block diagram of a terminal in accordance with an embodiment of the present invention.
  • a terminal 600 includes: an MCS information indicating apparatus 400 as shown in FIG.
  • FIG. 7 shows a schematic block diagram of a base station of another embodiment of the present invention.
  • a base station 700 includes a processing device 702 and a storage device 704, wherein the processing device 702 is configured to perform the following operations when executing a computer program stored in the storage device 704:
  • the duration of the first type of TTI is an integer multiple of the duration of the second type of TTI
  • the first type of TTI is configured with a reference MCS value
  • the second type of TTI is configured with an offset value
  • the partial The value of the offset of the actual MCS value of the second type of TTI relative to the reference MCS value is used to indicate that the number of bits of the reference MCS value is greater than the number of bits used to indicate the offset value
  • processing device 702 is configured to perform the following operations when the computer program stored in the storage device 704 is executed:
  • Figure 8 shows a schematic block diagram of a computer device of an embodiment of the present invention.
  • a computer device 800 in accordance with an embodiment of the present invention includes a processor 802 and a memory 804, wherein the processor 802 is configured to perform the following operations when executing a computer program stored in the memory 804:
  • the target downlink control information is configured with a reference MCS value of the first type of TTI and an offset value of the second type of TTI, where the offset value indicates the second type of TTI
  • the offset value indicates the second type of TTI
  • the MCS information indicating apparatus, the base station, the terminal, and the unit in the computer equipment of the embodiments of the present invention may be combined, divided, and deleted according to actual needs.
  • the program can be stored in a computer readable storage medium, and the storage medium includes read only Memory (Read-Only Memory, ROM), Random Access Memory (RAM), Programmable Read-Only Memory (PROM), Erasable Programmable Read Only Memory (EPROM), one-time programmable only One-time Programmable Read-Only Memory (OTPROM), Electronically-Erasable Programmable Read-Only Memory (EEPROM), CD-ROM (Compact Disc Read-Only Memory, CD- ROM) or other optical disk storage, disk storage, magnetic tape storage, or any other medium readable by a computer that can be used to carry or store data.
  • Read-Only Memory ROM
  • RAM Random Access Memory
  • PROM Programmable Read-Only Memory
  • EPROM Erasable Programmable Read Only Memory
  • OTPROM One-time Programmable Read-Only Memory
  • OTPROM One-time Programmable Read-Only Memory
  • EEPROM Electronically-Erasable Programmable Read-Only Memory
  • CD-ROM Compact Disc Read-On
  • the present invention provides a new MCS information indication scheme, which can effectively reduce the overhead of downlink control information.

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Abstract

本发明提供了一种MCS信息指示方法、MCS信息指示装置、基站及终端，其中，MCS信息指示方法，用于基站，包括：在目标下行控制信息中对第一类TTI和第二类TTI配置MCS信息，其中，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，所述第一类TTI配置有基准MCS值，所述第二类TTI配置有偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数；向终端发送所述目标下行控制信息，以指示所述终端确定所述第二类TTI的实际MCS值。通过本发明的技术方案，能够有效地降低下行控制信息的开销。

Description

MCS信息指示方法、MCS信息指示装置、基站及终端
本申请要求于2016年11月30日提交中国专利局、申请号为201611076415.2、发明名称为“MCS信息指示方法、MCS信息指示装置、基站及终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，具体而言，涉及一种MCS信息指示方法、一种MCS信息指示装置、一种基站和一种终端。
背景技术
随着移动互联网的发展，涌现出了大量满足各种特定功能的应用业务。其中一些业务对数据时延要求较低，例如收发邮件、下载电影等；但另有一些业务对数据时延有严格的要求，例如网络联机游戏、抢购、抢红包等等，这类业务通常都要求用户数据的时延尽可能的短。在LTE(Long Term Evolution，长期演进)网络中，TTI(Transmission Time Interval，发送时间间隔)是影响用户数据时延的重要指标。当前的LTE系统采用的TTI(后文称为legacy TTI)是1ms，也即一个子帧，发送端每1ms发送一次数据块，接收端可每1ms接收一个数据块。
在3GPP RAN#69全会中对在LTE网络中使用更短的TTI的课题进行了立项，研究使用更短时长的TTI(short-TTI，后文简称为sTTI，例如0.5ms等)的可行性以及可能的有益效果。目前有一些文献例如[R1-160942][R1-160930]定量的研究了TTI时长的减少对LTE数据时延的影响，分析显示使用sTTI并不仅仅是基站、终端的发射时间间隔变短，相应的，与该发送间隔相对应的数据处理时间也会随之降低，例如数据编码调制以及数据解调时间都会随着数据块大小的降低而减少。在后续版本的 LTE网络中可能会出现使用legacy TTI与sTTI两种发送间隔的UE(User Equipment，用户终端)共存的情况。
在LTE系统中，可选的MCS(Modulation and Coding Scheme，调制与编码策略)最多有32种。当信道条件越好时，可以使用的MCS值越大，对应的数据传输时能够采用的调制阶数和编码效率越高，则数据传输速率越大。在使用legacy TTI的情况下，如果采用动态调度的方式调度用户，则需要在每个TTI都要向被调度用户发送的DCI(Downlink Control Information，下行控制信息)中使用5bit来指示被调度的TTI使用的MCS。如果在sTTI中也采用同样的指示方式被调度用户使用的MCS，由于sTTI时长更短，一个legacy TTI一般会包括多个sTTI，则在单位时间内需要占用更多的资源来承载这些MCS信息，造成下行控制信息的较大开销，对此，目前还没有有效的解决方案。
发明内容
本发明正是基于上述技术问题至少之一，提出了一种新的MCS信息指示方案，能够有效地降低下行控制信息的开销。
有鉴于此，本发明提出了一种MCS信息指示方法，用于基站，包括：在目标下行控制信息中对第一类TTI和第二类TTI配置MCS信息，其中，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，所述第一类TTI配置有基准MCS值，所述第二类TTI配置有偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数；向终端发送所述目标下行控制信息，以指示所述终端确定所述第二类TTI的实际MCS值。
在该技术方案中，通过在目标下行控制信息中为第一类TTI配置基准MCS值、为第二类TTI配置偏移值，且用于指示基准MCS值的比特数大于用于指示偏移值的比特数，从而降低了指示MCS信息所需的比特数，有效地降低了下行控制信息的开销。
在上述技术方案中，优选地，所述基准MCS值为所述第二类TTI中任一TTI的实际MCS值。
在该技术方案中，当基准MCS值为第二类TTI中任一TTI的实际MCS值时，用于指示该任一TTI的偏移值所需的比特数为0，从而进一步降低下行控制信息的开销。当然，基准MCS值也可以取其他值，而不局限于第二类TTI中任一TTI的实际MCS值。
在上述任一项技术方案中，优选地，所述向终端发送所述目标下行控制信息的步骤，具体包括：针对所述第一类TTI，基于物理层下行控制信令向所述终端发送所述基准MCS值；针对所述第二类TTI，基于物理层下行控制信令向所述终端发送所述偏移值。
根据本发明的第二方面，提出了一种MCS信息指示方法，用于终端，包括：接收基站发送的目标下行控制信息，其中，所述目标下行控制信息中配置有第一类TTI的基准MCS值以及第二类TTI的偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数；根据所述基准值和所述偏移值，确定所述第二类TTI的实际MCS值。
在该技术方案中，终端通过接收基站发送的目标下行控制信息，并根据基准值和偏移值确定第二类TTI的实际MCS值，其中，在目标下行控制信息中配置有第一类TTI的基准MCS值以及第二类TTI的偏移值，且用于指示基准MCS值的比特数大于用于指示偏移值的比特数，从而降低了指示MCS信息所需的比特数，有效地降低了下行控制信息的开销，同时确保了终端可准确地确定第二类TTI的实际MCS值。
根据本发明的第三方面，提出了一种MCS信息指示装置，用于基站，包括：配置单元，用于在目标下行控制信息中对第一类TTI和第二类TTI配置MCS信息，其中，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，所述第一类TTI配置有基准MCS值，所述第二类TTI配置有偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数；发送单元，用于向终端发送所述目标下行控制信息，以指示所述终端确定所述第二类TTI的实际MCS值。
在该技术方案中，通过在目标下行控制信息中为第一类TTI配置基准MCS值、为第二类TTI配置偏移值，且用于指示基准MCS值的比特数大于用于指示偏移值的比特数，从而降低了指示MCS信息所需的比特数，有效地降低了下行控制信息的开销。
在上述技术方案中，优选地，所述基准MCS值为所述第二类TTI中任一TTI的实际MCS值。
在该技术方案中，当基准MCS值为第二类TTI中任一TTI的实际MCS值时，用于指示该任一TTI的偏移值所需的比特数为0，从而进一步降低下行控制信息的开销。当然，基准MCS值也可以取其他值，而不局限于第二类TTI中任一TTI的实际MCS值。
在上述任一项技术方案中，优选地，所述发送单元具体用于：针对所述第一类TTI，基于物理层下行控制信令向所述终端发送所述基准MCS值；针对所述第二类TTI，基于物理层下行控制信令向所述终端发送所述偏移值。
根据本发明的第四方面，提出了一种MCS信息指示装置，用于终端，包括：接收单元，用于接收基站发送的目标下行控制信息，其中，所述目标下行控制信息中配置有第一类TTI的基准MCS值以及第二类TTI的偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数；确定单元，用于根据所述基准值和所述偏移值，确定所述第二类TTI的实际MCS值。
在该技术方案中，终端通过接收基站发送的目标下行控制信息，并根据基准值和偏移值确定第二类TTI的实际MCS值，其中，在目标下行控制信息中配置有第一类TTI的基准MCS值以及第二类TTI的偏移值，且用于指示基准MCS值的比特数大于用于指示偏移值的比特数，从而降低了指示MCS信息所需的比特数，有效地降低了下行控制信息的开销，同时确保了终端可准确地确定第二类TTI的实际MCS值。
根据本发明的第五方面，还提出了一种基站，包括：如上述技术方案中任一项所述的MCS信息指示装置。
根据本发明的第六方面，还提出了一种终端，包括：如上述技术方案中任一项所述的MCS信息指示装置。
根据本发明的第七方面，还提出了一种基站，所述基站包括处理装置，所述处理装置用于执行存储装置中存储的计算机程序时实现如上第一方面的技术方案中任一项所述的MCS信息指示方法的步骤。
根据本发明的第八方面，还提出了一种计算机设备，所述计算机设备包括处理器，所述处理器用于执行存储器中存储的计算机程序时实现如上第二方面的技术方案中所述的MCS信息指示方法的步骤。
根据本发明的第九方面，还提出了一种计算机存储介质，其上存储有计算机指令，所述计算机指令被处理器执行时实现如上第一方面或第二方面的技术方案中任一项所述的MCS信息指示方法的步骤。
通过以上技术方案，能够有效地降低下行控制信息的开销。
附图说明
图1示出了根据本发明的一个实施例的MCS信息指示方法的示意流程图；
图2示出了根据本发明的另一个实施例的MCS信息指示方法的示意流程图；
图3示出了根据本发明的一个实施例的MCS信息指示装置的示意框图；
图4示出了根据本发明的另一个实施例的MCS信息指示装置的示意框图；
图5示出了根据本发明的实施例的基站的示意框图；
图6示出了根据本发明的实施例的终端的示意框图；
图7示出了本发明的另一实施例的基站的示意框图；
图8示出了本发明的实施例的计算机设备的示意框图。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附 图和具体实施方式对本发明进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用其他不同于在此描述的其他方式来实施，因此，本发明的保护范围并不受下面公开的具体实施例的限制。
图1示出了根据本发明的一个实施例的MCS信息指示方法的示意流程图。
如图1所示，根据本发明的一个实施例的MCS信息指示方法，用于基站，包括：
步骤102，在目标下行控制信息中对第一类TTI和第二类TTI配置MCS信息，其中，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，所述第一类TTI配置有基准MCS值，所述第二类TTI配置有偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数。
步骤104，向终端发送所述目标下行控制信息，以指示所述终端确定所述第二类TTI的实际MCS值。
在该技术方案中，通过在目标下行控制信息中为第一类TTI配置基准MCS值、为第二类TTI配置偏移值，且用于指示基准MCS值的比特数大于用于指示偏移值的比特数，从而降低了指示MCS信息所需的比特数，有效地降低了下行控制信息的开销。
在上述技术方案中，优选地，所述基准MCS值为所述第二类TTI中任一TTI的实际MCS值。
在该技术方案中，当基准MCS值为第二类TTI中任一TTI的实际MCS值时，用于指示该任一TTI的偏移值所需的比特数为0，从而进一步降低下行控制信息的开销。当然，基准MCS值也可以取其他值，而不局限于第二类TTI中任一TTI的实际MCS值。
具体地，设定第一类TTI为1个legacy TTI，第二类TTI为一个sTTI，其中，一个legacy TTI包含4个sTTI，如果在每个sTTI进行动态 调度，在每次调度一个UE的场景下，传统方案中在一个legacy TTI内需要使用的用于指示MCS的bit数为5×4＝20bit，在本实施例中，使用3bit标志sTTI的实际MCS相对于基准MCS的偏移值，则在一个legacy TTI内需要使用的用于指示MCS的bit数为5+3×4＝17bit，故在一个legacy TTI内节省了3bit，降低了下行控制信息的开销。
更进一步地，将legacy TTI的基准MCS设置为该legacy TTI的第一个sTTI的实际MCS值，此时在一个legacy TTI内需要使用的用于指示MCS的bit数为5+3×3＝14bit，故在一个legacy TTI内节省了6bit，进一步降低了下行控制信息的开销。此外，在一个legacy TTI内，一个用户所使用的MCS会集中在一定范围内，考虑到sTTI一般都是应用于信道条件较好的中低速移动环境，而在中低速移动环境中信道的时变性一般较低，信道的情况较为一致，因此在一个legacy TTI内MCS集中在一定范围内而可能带来的与信道的匹配度降低的影响可以忽略。
在上述任一项技术方案中，优选地，所述向终端发送所述目标下行控制信息的步骤，具体包括：针对所述第一类TTI，基于物理层下行控制信令向所述终端发送所述基准MCS值；针对所述第二类TTI，基于物理层下行控制信令向所述终端发送所述偏移值。
图2示出了根据本发明的另一个实施例的MCS信息指示方法的示意流程图。
如图2所示，根据本发明的另一个实施例的MCS信息指示方法，用于终端，包括：
步骤202，接收基站发送的目标下行控制信息，其中，所述目标下行控制信息中配置有第一类TTI的基准MCS值以及第二类TTI的偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数。
步骤204，根据所述基准值和所述偏移值，确定所述第二类TTI的实际MCS值。
在该技术方案中，终端通过接收基站发送的目标下行控制信息，并根 据基准值和偏移值确定第二类TTI的实际MCS值，其中，在目标下行控制信息中配置有第一类TTI的基准MCS值以及第二类TTI的偏移值，且用于指示基准MCS值的比特数大于用于指示偏移值的比特数，从而降低了指示MCS信息所需的比特数，有效地降低了下行控制信息的开销，同时确保了终端可准确地确定第二类TTI的实际MCS值。
图3示出了根据本发明的一个实施例的MCS信息指示装置的示意框图。
如图3所示，根据本发明的一个实施例的MCS信息指示装置300，用于基站，包括：配置单元302和发送单元304。
其中，配置单元302用于在目标下行控制信息中对第一类TTI和第二类TTI配置MCS信息，其中，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，所述第一类TTI配置有基准MCS值，所述第二类TTI配置有偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数；发送单元304用于向终端发送所述目标下行控制信息，以指示所述终端确定所述第二类TTI的实际MCS值。
在该技术方案中，通过在目标下行控制信息中为第一类TTI配置基准MCS值、为第二类TTI配置偏移值，且用于指示基准MCS值的比特数大于用于指示偏移值的比特数，从而降低了指示MCS信息所需的比特数，有效地降低了下行控制信息的开销。
在上述技术方案中，优选地，所述基准MCS值为所述第二类TTI中任一TTI的实际MCS值。
在该技术方案中，当基准MCS值为第二类TTI中任一TTI的实际MCS值时，用于指示该任一TTI的偏移值所需的比特数为0，从而进一步降低下行控制信息的开销。当然，基准MCS值也可以取其他值，而不局限于第二类TTI中任一TTI的实际MCS值。
在上述任一项技术方案中，优选地，所述发送单元304具体用于：针对所述第一类TTI，基于物理层下行控制信令向所述终端发送所述基准MCS值；针对所述第二类TTI，基于物理层下行控制信令向所述终端发送 所述偏移值。
图4示出了根据本发明的另一个实施例的MCS信息指示装置的示意框图。
如图4所示，根据本发明的另一个实施例的MCS信息指示装置400，用于终端，包括：接收单元402和确定单元404。
其中，接收单元402用于接收基站发送的目标下行控制信息，其中，所述目标下行控制信息中配置有第一类TTI的基准MCS值以及第二类TTI的偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数；确定单元404用于根据所述基准值和所述偏移值，确定所述第二类TTI的实际MCS值。
在该技术方案中，终端通过接收基站发送的目标下行控制信息，并根据基准值和偏移值确定第二类TTI的实际MCS值，其中，在目标下行控制信息中配置有第一类TTI的基准MCS值以及第二类TTI的偏移值，且用于指示基准MCS值的比特数大于用于指示偏移值的比特数，从而降低了指示MCS信息所需的比特数，有效地降低了下行控制信息的开销，同时确保了终端可准确地确定第二类TTI的实际MCS值。
图5示出了根据本发明的实施例的基站的示意框图。
如图5所示，根据本发明的实施例的基站500，包括：如图3所示的MCS信息指示装置300。
图6示出了根据本发明的实施例的终端的示意框图。
如图6所示，根据本发明的实施例的终端600，包括：如图4所示的MCS信息指示装置400。
图7示出了本发明的另一实施例的基站的示意框图。
如图7所示，根据本发明的另一实施例的基站700包括处理装置702和存储装置704，其中，所述处理装置702用于执行存储装置704中存储的计算机程序时实现以下操作：
在目标下行控制信息中对第一类TTI和第二类TTI配置MCS信息，其 中，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，所述第一类TTI配置有基准MCS值，所述第二类TTI配置有偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数；
向终端发送所述目标下行控制信息，以指示所述终端确定所述第二类TTI的实际MCS值。
作为一种可选的实施方式，所述处理装置702用于执行存储装置704中存储的计算机程序时具体用于执行以下操作：
针对所述第一类TTI，基于物理层下行控制信令向所述终端发送所述基准MCS值；
针对所述第二类TTI，基于物理层下行控制信令向所述终端发送所述偏移值。
图8示出了本发明的实施例的计算机设备的示意框图。
如图8所示，根据本发明的实施例的计算机设备800包括处理器802和存储器804，其中，所述处理器802用于执行存储器804中存储的计算机程序时实现以下操作：
接收基站发送的目标下行控制信息，其中，所述目标下行控制信息中配置有第一类TTI的基准MCS值以及第二类TTI的偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数；
根据所述基准值和所述偏移值，确定所述第二类TTI的实际MCS值。
本发明实施例的方法中的步骤可以根据实际需要进行顺序调整、合并和删减。
本发明实施例的MCS信息指示装置、基站、终端和计算机设备中的单元可以根据实际需要进行合并、划分和删减。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质包括只读存储器(Read-Only Memory， ROM)、随机存储器(Random Access Memory，RAM)、可编程只读存储器(Programmable Read-only Memory，PROM)、可擦除可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)、一次可编程只读存储器(One-time Programmable Read-Only Memory，OTPROM)、电子抹除式可复写只读存储器(Electrically-Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储器、磁盘存储器、磁带存储器、或者能够用于携带或存储数据的计算机可读的任何其他介质。
以上结合附图详细说明了本发明的技术方案，本发明提出了一种新的MCS信息指示方案，能够有效地降低下行控制信息的开销。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (13)

  1. 一种MCS信息指示方法，用于基站，其特征在于，包括：
    在目标下行控制信息中对第一类TTI和第二类TTI配置MCS信息，其中，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，所述第一类TTI配置有基准MCS值，所述第二类TTI配置有偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数；
    向终端发送所述目标下行控制信息，以指示所述终端确定所述第二类TTI的实际MCS值。
  2. 根据权利要求1所述的MCS信息指示方法，其特征在于，所述基准MCS值为所述第二类TTI中任一TTI的实际MCS值。
  3. 根据权利要求1或2所述的MCS信息指示方法，其特征在于，所述向终端发送所述目标下行控制信息的步骤，具体包括：
    针对所述第一类TTI，基于物理层下行控制信令向所述终端发送所述基准MCS值；
    针对所述第二类TTI，基于物理层下行控制信令向所述终端发送所述偏移值。
  4. 一种MCS信息指示方法，用于终端，其特征在于，包括：
    接收基站发送的目标下行控制信息，其中，所述目标下行控制信息中配置有第一类TTI的基准MCS值以及第二类TTI的偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数；
    根据所述基准值和所述偏移值，确定所述第二类TTI的实际MCS值。
  5. 一种MCS信息指示装置，用于基站，其特征在于，包括：
    配置单元，用于在目标下行控制信息中对第一类TTI和第二类TTI配置MCS信息，其中，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，所述第一类TTI配置有基准MCS值，所述第二类TTI配置有偏移值， 所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数；
    发送单元，用于向终端发送所述目标下行控制信息，以指示所述终端确定所述第二类TTI的实际MCS值。
  6. 根据权利要求5所述的MCS信息指示装置，其特征在于，所述基准MCS值为所述第二类TTI中任一TTI的实际MCS值。
  7. 根据权利要求5或6所述的MCS信息指示装置，其特征在于，所述发送单元具体用于：
    针对所述第一类TTI，基于物理层下行控制信令向所述终端发送所述基准MCS值；
    针对所述第二类TTI，基于物理层下行控制信令向所述终端发送所述偏移值。
  8. 一种MCS信息指示装置，用于终端，其特征在于，包括：
    接收单元，用于接收基站发送的目标下行控制信息，其中，所述目标下行控制信息中配置有第一类TTI的基准MCS值以及第二类TTI的偏移值，所述偏移值表示所述第二类TTI的实际MCS值相对于所述基准MCS值的偏移值，所述第一类TTI的时长是所述第二类TTI的时长的整数倍，用于指示所述基准MCS值的比特数大于用于指示所述偏移值的比特数；
    确定单元，用于根据所述基准值和所述偏移值，确定所述第二类TTI的实际MCS值。
  9. 一种基站，其特征在于，包括：如权利要求5至7中任一项所述的MCS信息指示装置。
  10. 一种终端，其特征在于，包括：如权利要求8所述的MCS信息指示装置。
  11. 一种基站，其特征在于，所述基站包括处理装置，所述处理装置用于执行存储装置中存储的计算机程序时实现如权利要求1至3中任一项所述的MCS信息指示方法的步骤。
  12. 一种计算机设备，其特征在于，所述计算机设备包括处理器，所述 处理器用于执行存储器中存储的计算机程序时实现如权利要求4所述的MCS信息指示方法的步骤。
  13. 一种计算机存储介质，其上存储有计算机指令，其特征在于，所述计算机指令被处理器执行时实现如权利要求1至4中任一项所述的MCS信息指示方法的步骤。
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