WO2012139398A1

WO2012139398A1 - Method and device for adaptive transmission mode scheduling

Info

Publication number: WO2012139398A1
Application number: PCT/CN2011/083889
Authority: WO
Inventors: 王希维; 姚春峰; 张娟
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-04-12
Filing date: 2011-12-13
Publication date: 2012-10-18
Also published as: CN102739342A

Abstract

Disclosed are a method and device for adaptive transmission mode scheduling. The method comprises: estimating the spectral efficiency of two transmission modes periodically according to a channel quality indicator (CQI) reported by a terminal and an outer loop adjustment parameter △MCS maintained by a base station; correcting the spectral efficiency when a preset condition is satisfied; and selecting the transmission mode with the higher spectral efficiency as the transmission mode for the current scheduling. In the present invention, the transmission mode is selected based on the spectral efficiency, and the MIMO transmission mode with higher spectral efficiency may be selected, so the system throughput is effectively improved, and the problem of the incorrectly selected transmission mode and the poor system throughput performance caused by the incorrect rank indicator (RI) reported by a terminal in the downlink transmission mode 3 of a dual-antenna LTE system is solved.

Description

自适应传输模式调度的方法及装置技术领域 Method and device for adaptive transmission mode scheduling

本发明涉及移动通信领域，特别涉及一种自适应传输模式调度的方法及装置。背景技术 The present invention relates to the field of mobile communications, and in particular, to a method and apparatus for adaptive transmission mode scheduling. Background technique

LTE(Long Term Evolution , 长期演进***）是 3GPP ( 3rd Generation Partnership Project )在"移动通信宽带化"趋势下，为了对抗 WiMAX(World interoperability for Microwave Access)等移动宽带无线接入技术的市场^ 战，在十几年超 3G ( B3G )研究的技术储备基础上研发出的"准 4G"技术。 LTE 在空中接口方面使用频分多址技术，即 OFDM(Orthogonal Frequency Division Multiplexing) , 替代了 3GPP 长期使用的码分多址（CDMA , Code-Division Multiple Access )技术，并大量采用了多输入多输出（ MIMO, Multiple Input Multiple Output )技术和自适应技术提高数据率和***性能，因此成为未来蜂窝移动通信***、无线宽带接入***等的核心技术。 LTE (Long Term Evolution) is a 3GPP (3rd Generation Partnership Project) under the trend of "mobile communication broadband", in order to counter the market warfare of mobile broadband wireless access technologies such as WiMAX (World Interoperability for Microwave Access). Based on the technical reserves of the Super 3G (B3G) research for more than a decade, the "quasi 4G" technology was developed. LTE uses frequency division multiple access (OFDM) in the air interface, which is OFDM (Orthogonal Frequency Division Multiplexing), which replaces the long-term CDMA (Code-Division Multiple Access) technology and uses a large number of multiple input and multiple outputs. (MIMO, Multiple Input Multiple Output) technology and adaptive technology improve data rate and system performance, so it will become the core technology of future cellular mobile communication systems and wireless broadband access systems.

传输模式调度的原理是根据信道情况的变化改变传输模式。对于两天线 LTE***下行传输模式 3 , 可采用发射分集和空间复用两种传输模式的 MIMO技术进行传输，其中， RI ( Rank Indication, 秩指示符）为 1时对应发射分集传输模式， RI为 2时对应空间复用传输模式。发射分集相对于空间复用性能更佳，而空间复用相对于发射分集可以达到更高的峰值速率，因此，需要根据实际信道状况对两种传输模式进行选择。 The principle of transmission mode scheduling is to change the transmission mode according to changes in channel conditions. For the downlink transmission mode 3 of the two-antenna LTE system, the MIMO technology of the transmission diversity mode and the spatial multiplexing mode may be used for transmission, where the RI ( Rank Indication) is 1 corresponding to the transmit diversity transmission mode, and the RI is 2 o'clock corresponds to the spatial multiplexing transmission mode. Transmit diversity is better than spatial multiplexing, while spatial multiplexing can achieve higher peak rates relative to transmit diversity. Therefore, two transport modes need to be selected based on actual channel conditions.

在相关技术中，提出了一种思想，即在一个统计窗内，统计 RI=1的上报次数和 RI=2的上报次数，选择上报次数多的 RI作为下发使用的 RL 但是，通过在统计窗内统计各 RI的上报次数，选择上报次数多的 RI, 完全依赖于终端的上报，若终端上报的 RI不够准确，则该算法会选择错误的传输模式。发明内容 In the related art, an idea is put forward, that is, in a statistical window, the number of times of reporting RI=1 and the number of times of reporting of RI=2 are selected, and the RI with a higher number of times of reporting is selected as the RL for delivery. Count the number of reports of each RI in the window, and select the RI with more reported times. Depending on the reporting of the terminal, if the RI reported by the terminal is not accurate enough, the algorithm will select the wrong transmission mode. Summary of the invention

本发明的主要目的为提供一种自适应传输模式调度的方法及装置，能够解决两天线 LTE***下行传输模式 3中由于终端上报 RI不准确而导致传输模式选择错误的问题，提高***吞吐量性能。 The main object of the present invention is to provide a method and an apparatus for adaptive transmission mode scheduling, which can solve the problem that the transmission mode selection error is caused by the inaccurate RI reported by the terminal in the downlink transmission mode 3 of the two-antenna LTE system, and improve the system throughput performance. .

本发明实施例提出一种自适应传输模式调度的方法，包括： The embodiment of the invention provides a method for adaptive transmission mode scheduling, which includes:

根据终端上报的信道质量指示符 CQI 和基站维护的外环调整参数 s，定时预估两种传输模式的频谱效率； The spectrum efficiency of the two transmission modes is estimated periodically according to the channel quality indicator CQI reported by the terminal and the outer loop adjustment parameter s maintained by the base station;

满足预设条件时，对频谱效率进行修正； Correct the spectral efficiency when the preset conditions are met;

选择所述频谱效率大的传输模式作为本次调度的传输模式。 The transmission mode with high spectral efficiency is selected as the transmission mode of the current scheduling.

优选地，所述根据终端上报的信道质量指示符 CQI和基站维护的外环调整参数，定时预估两种传输模式的频谱效率包括： Preferably, the spectrum efficiency of the two transmission modes is predicted according to the channel quality indicator CQI reported by the terminal and the outer loop adjustment parameter maintained by the base station, including:

获取两种传输模式的 CQI和 Δ Ο^； Obtain CQI and Δ Ο^ for two transmission modes;

根据所述 CQI和 ΔΛΛ , 计算两种模式的调制编码方案 MCS; Calculating two modes of modulation coding scheme MCS according to the CQI and ΔΛΛ;

根据所述两种模式的 MCS, 查找预设的 MCS与频谱效率的映射表，得到两种模式的频谱效率。 According to the MCS of the two modes, the mapping table of the preset MCS and the spectrum efficiency is searched, and the spectral efficiency of the two modes is obtained.

优选地，所述获取两种传输模式的 CQI包括： Preferably, the obtaining the CQI of the two transmission modes comprises:

确定终端上报的 CQI对应的传输模式； Determining a transmission mode corresponding to the CQI reported by the terminal;

根据所述终端上报的 CQI折算得到另一传输模式的 CQI; Calculating a CQI of another transmission mode according to the CQI reported by the terminal;

分别对所述两种传输模式的 CQI进行滤波，得到最终的两种传输模式的 CQI。 The CQIs of the two transmission modes are respectively filtered to obtain CQIs of the final two transmission modes.

优选地，所述获取两种传输模式的 Δ (^为： Preferably, the obtaining Δ of the two transmission modes is (^ is:

通过自适应调制编码 AMC更新 CS和 /或满足预设条件时对 S进行更新。优选地，所述自适应传输模式调度的方法还包括： S is updated by adaptive modulation coding AMC update CS and/or when a preset condition is met. Preferably, the method for the adaptive transmission mode scheduling further includes:

当所述两种传输模式的频谱效率相同时，选择上一调度时刻的传输模式为本次调度的传输模式； When the spectral efficiency of the two transmission modes is the same, the transmission mode of the last scheduling moment is selected as the transmission mode of the scheduling;

当本次调度是首次调度时，选择发射分集模式为传输模式。 When the current scheduling is the first scheduling, the transmit diversity mode is selected as the transmission mode.

本发明实施例还提出一种自适应传输模式调度的装置，包括：预估模块、修正模块和选择模块；其中， An embodiment of the present invention further provides an apparatus for adaptive transmission mode scheduling, including: an estimation module, a correction module, and a selection module;

所述预估模块，设置为根据终端上报的信道质量指示符 CQI和基站维护的外环调整参数 Δ (^，定时预估两种传输模式的频谱效率； The estimation module is configured to adjust a parameter Δ according to a channel quality indicator CQI reported by the terminal and an outer loop maintained by the base station, and periodically estimate the spectrum efficiency of the two transmission modes;

所述修正模块，设置为在满足预设条件时，对频谱效率进行修正；所述选择模块，设置为选择所述频谱效率大的传输模式作为本次调度的传输模式。 The correction module is configured to correct the spectral efficiency when the preset condition is met; and the selecting module is configured to select the transmission mode with a large spectral efficiency as the transmission mode of the current scheduling.

优选地，所述预估模块包括：获取单元，计算单元和查找单元；其中，所述获取单元，设置为获取两种传输模式的 CQI和 Δ (^； Preferably, the estimating module comprises: an obtaining unit, a calculating unit and a searching unit; wherein the acquiring unit is configured to acquire CQI and Δ of two transmission modes (^;

所述计算单元，设置为根据所述 CQI和 A CS , 计算两种模式的 MCS; 所述查找单元，设置为根据所述两种模式的 MCS, 查找预设的 MCS 与频谱效率的映射表，得到两种模式的频谱效率。 The calculating unit is configured to calculate the MCS of the two modes according to the CQI and the ACS, and the searching unit is configured to search, according to the MCS of the two modes, a mapping table of the preset MCS and the spectrum efficiency, The spectral efficiency of the two modes is obtained.

优选地，所述获取单元包括：确定子单元、折算子单元和滤波子单元；其中， Preferably, the acquiring unit includes: a determining subunit, a converting subunit, and a filtering subunit; wherein

所述确定子单元，设置为确定终端上报的 CQI对应的传输模式；所述折算子单元，设置为根据所述终端上报的 CQI折算得到另一传输模式的 CQI; The determining subunit is configured to determine a transmission mode corresponding to the CQI reported by the terminal; the conversion subunit is configured to obtain a CQI of another transmission mode according to the CQI reported by the terminal;

所述滤波子单元，设置为分别对两种传输模式的 CQI进行滤波，得到最终的两种传输模式的 CQI。 The filtering subunit is configured to filter the CQIs of the two transmission modes respectively to obtain CQIs of the final two transmission modes.

优选地，所述获取单元还包括： Preferably, the acquiring unit further includes:

更新子单元，设置为通过自适应调制编码 AMC更新 Δ Ο^和 /或满足预设条件时对 ^MCS进行更新。 Update the subunit, set to update Δ Ο^ and/or satisfy the preamble by adaptive modulation coding AMC Update the ^MCS when the condition is set.

优选地，所述选择模块还设置为： Preferably, the selection module is further configured to:

本发明实施例提出的自适应传输模式调度的方法及装置，基于频谱效率进行传输模式的选择，可以选择频谱效率较高的 MIMO传输模式，有效提高***吞吐量，解决了两天线 LTE***下行传输模式 3中，由于终端上报 RI不准确而导致选择错误传输模式， ***吞吐量性能差的问题。附图说明图 1 为本发明自适应传输模式调度的方法一实施例的流程示意图；图 2 为本发明自适应传输模式调度的方法一实施例中预估步驟的流程示意图； The method and device for adaptive transmission mode scheduling proposed by the embodiment of the present invention can select a transmission mode based on spectral efficiency, can select a MIMO transmission mode with higher spectrum efficiency, effectively improve system throughput, and solve the downlink transmission of the two-antenna LTE system. In mode 3, due to the inaccurate RI reported by the terminal, the error transmission mode is selected, and the system throughput performance is poor. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic flowchart of an embodiment of an adaptive transmission mode scheduling method according to the present invention; FIG. 2 is a schematic flowchart of an estimation step in an embodiment of an adaptive transmission mode scheduling method according to the present invention;

图 3 为本发明自适应传输模式调度的方法一实施例中获取 CQI的流程示意图； 3 is a schematic diagram of a process for acquiring CQI in an embodiment of an adaptive transmission mode scheduling method according to the present invention;

图 4 为本发明自适应传输模式调度的方法一实施例中更新的流程示意图； 4 is a schematic flowchart of an update in an embodiment of an adaptive transmission mode scheduling method according to the present invention;

图 5 为本发明自适应传输模式调度的方法又一实施例的流程示意图；图 6 为本发明自适应传输模式调度的装置一实施例的结构意图；图 7 为本发明自适应传输模式调度的装置一实施例中预估模块的结构示意图； FIG. 5 is a schematic flowchart of still another embodiment of an apparatus for adaptive transmission mode scheduling according to the present invention; FIG. 6 is a structural schematic diagram of an apparatus for adaptive transmission mode scheduling according to the present invention; FIG. A schematic structural diagram of an estimation module in an embodiment of the apparatus;

图 8 为本发明自适应传输模式调度的装置一实施例中获取单元的结构示意图； FIG. 8 is a schematic structural diagram of an acquiring unit in an embodiment of an apparatus for adaptive transmission mode scheduling according to the present invention; FIG.

图 9为本发明自适应传输模式调度的装置一实施例中获取单元的另一结构示意图。具体实施方式 FIG. 9 is another schematic structural diagram of an acquiring unit in an embodiment of an apparatus for adaptive transmission mode scheduling according to the present invention. detailed description

应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。 It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

参照图 1 ,提出本发明一种自适应传输模式调度的方法一实施例，该方法包括： Referring to FIG. 1, an embodiment of an adaptive transmission mode scheduling method according to the present invention is provided. The method includes:

步驟 S10、根据终端上报的信道质量指示符 CQI和基站维护的外环调整参数定时预估两种传输模式的频谱效率； Step S10: Estimating the spectrum efficiency of the two transmission modes according to the channel quality indicator CQI reported by the terminal and the outer loop adjustment parameter maintained by the base station;

这里，接收终端上报的 CQI后，通过终端上报的 CQI, 分别获得两种传输模式 R1和 R2的 MCS初始值；再利用基站维护的外环调整参数 Δ <^，获得传输模式 R1和 R2的频谱效率。 Here, after receiving the CQI reported by the terminal, the MCS initial values of the two transmission modes R1 and R2 are respectively obtained by the CQI reported by the terminal; and the outer loop adjustment parameter Δ <^ maintained by the base station is used to obtain the spectrum of the transmission modes R1 and R2. effectiveness.

步驟 Sll、满足预设条件时，对频谱效率进行修正，选择所述频谱效率大的传输模式作为本次调度的传输模式。 Step S11: When the preset condition is met, the spectrum efficiency is corrected, and the spectrum efficiency transmission mode is selected as the transmission mode of the current scheduling.

这里，对频谱效率进行修正一般为：对 Δ Ο?进行更新，根据 CQI和更新后的 Δ (^计算两种模式的 MCS, 之后通过查找预设的 MCS与频谱效率的映射表，对频谱效率进行修正，以期获得更准确的频谱效率。 Here, the correction of the spectral efficiency is generally: updating Δ Ο?, calculating the MCS of the two modes according to the CQI and the updated Δ (^, and then searching for the preset MCS and the spectral efficiency mapping table, the spectral efficiency Make corrections to get more accurate spectral efficiency.

根据已预估出的两种传输模式的频谱效率，选择频谱效率大的传输模式作为下发数据的传输模式。 According to the estimated spectral efficiency of the two transmission modes, a spectrally efficient transmission mode is selected as the transmission mode of the delivered data.

本实施例中，基于频谱效率进行传输模式的选择，可以选择频谱效率较高的 MIMO传输模式，有效提高***吞吐量，解决了由于终端上报 RI 不准确而导致选择错误传输模式， ***吞吐量性能差的问题。 In this embodiment, the selection of the transmission mode based on the spectrum efficiency may select a MIMO transmission mode with higher spectral efficiency, effectively improve the system throughput, and solve the problem of selecting the wrong transmission mode due to the inaccurate RI reported by the terminal, and the system throughput performance. Poor question.

参照图 2, 在一实施例中，步驟 S10可进一步包括： Referring to FIG. 2, in an embodiment, step S10 may further include:

步驟 S101、获取两种传输模式的 CQI和 ΔΛΛ ； Step S101: Obtain CQI and ΔΛΛ of two transmission modes;

步驟 S102、根据所述 CQI和 Δ Ο^ , 计算两种模式的 MCS; Step S102: Calculate two modes of MCS according to the CQI and Δ Ο^;

根据步驟 S101得到的两种传输模式的 CQI, 以及 CQI与 MCS初始值的映射表（该映射关系为预先设置，设置的准则可以为：当一 MCS对应的频谱效率与上报 CQI对应的频谱效率最接近时，则将该 MCS设置为该 CQI 对应的 MCS初始值），分别得到两种传输模式的 MCS初始值（记为 ^MCS^ ), 然后利用两种传输模式的外环调整参数 Δ (^ , 对进行修正得到两种传输模式最终的 MCS, 修正过程按照如下公式进行： According to the CQI of the two transmission modes obtained in step S101, and the mapping table of the initial values of CQI and MCS (the mapping relationship is preset, the set criterion may be: when an MCS corresponds When the spectral efficiency is closest to the spectral efficiency corresponding to the reported CQI, the MCS is set to the initial MCS value corresponding to the CQI, and the MCS initial values of the two transmission modes are respectively obtained (denoted as ^MCS ^), and then the two transmissions are utilized. The outer loop adjustment parameter Δ (^ of the mode is corrected to obtain the final MCS of the two transmission modes. The correction process is carried out according to the following formula:

MCS = MCS_init + AMCS MCS = MCS _init + AMCS

步驟 S103、根据所述两种模式的 MCS, 查找预设的 MCS与频谱效率的映射表，得到两种模式的频谱效率。 Step S103: Search for a preset mapping table between the MCS and the spectrum efficiency according to the MCS of the two modes, and obtain spectrum efficiencies of the two modes.

根据得到的两种传输模式最终的 MCS, 通过预先设置的 MCS与频谱效率的映射表（根据仿真得到），分别得到两种传输模式的频谱效率。 According to the final MCS of the two transmission modes obtained, the spectral efficiency of the two transmission modes is obtained by a preset mapping table of MCS and spectrum efficiency (according to simulation).

本实施例中，根据终端上报的 CQI和基站维护的外环调整参数 Δ (^获得各传输模式的频谱效率，避免了在 FDD模式下利用上行信道参数进行传输模式判决，结果不准确的问题。 In this embodiment, according to the CQI reported by the terminal and the outer loop adjustment parameter Δ maintained by the base station, the spectrum efficiency of each transmission mode is obtained, and the transmission mode decision using the uplink channel parameter in the FDD mode is avoided, and the result is inaccurate.

参照图 3, 在上述实施例中，步驟 S101可进一步包括： Referring to FIG. 3, in the foregoing embodiment, step S101 may further include:

步驟 S1011、确定终端上报的 CQI对应的传输模式； Step S1011: Determine a transmission mode corresponding to the CQI reported by the terminal;

根据本调度时刻是否有宽带 CQI上报进行不同处理。若有宽带 CQI上报，确定该 CQI对应的 RI, 则该 RI对应的 CQI就是终端上报的 CQI。若没有宽带 CQI上报，且本次调度不是首次调度，则两种传输模式沿用上一调度时刻使用的 CQI。两种传输模式的 CQI的初始值，为一可配置的预设值（经验值，可取 0 )。若没有宽带 CQI上报，且本次调度是首次调度，则传输模式确定为发射分集，即 RI=1 , 流程结束。 According to whether there is broadband CQI reporting at this scheduling time, different processing is performed. If there is a wideband CQI report, and the RI corresponding to the CQI is determined, the CQI corresponding to the RI is the CQI reported by the terminal. If there is no broadband CQI reporting, and this scheduling is not the first scheduling, the two transmission modes use the CQI used in the previous scheduling moment. The initial value of the CQI of the two transmission modes is a configurable preset value (experience value, preferably 0). If there is no broadband CQI reporting, and this scheduling is the first scheduling, the transmission mode is determined to be transmit diversity, that is, RI=1, and the process ends.

步驟 S1012、根据所述终端上报的 CQI折算得到另一传输模式的 CQI; 另一种传输模式的 CQI通过对上报的 CQI进行折算得到， CQI的折算方法可为： Step S1012: Calculating CQI of another transmission mode according to the CQI reported by the terminal; CQI of another transmission mode is obtained by converting the reported CQI, and the conversion method of the CQI may be:

将该 CQI通过 CQI与信号与干扰加噪声比 SINR的映射表 (该表格通过仿真得到），得到对应的 SINR,如果该 CQI对应的 RI=1 ,则将得到的 SINR 减去一预设值 (通常为经验值），然后将该修正后的 SINR通过 CQI 与 SINR的映射表，得到 RI=2对应的 CQI; 如果该 CQI对应的 RI=2, 则将得到的 SINR加上一预设值 ^{M M?}2 (通常为经验值)，然后将该修正后的 SINR 通过 CQI与 SINR的映射表，得到 RI=1对应的 CQI。 Passing the CQI through a mapping table of CQI and signal to interference plus noise ratio SINR (this table is obtained by simulation) to obtain a corresponding SINR, and if the CQI corresponds to RI=1, the obtained SINR is obtained. Subtracting a preset value (usually an empirical value), and then passing the corrected SINR through a mapping table of CQI and SINR to obtain a CQI corresponding to RI=2; if the CRI corresponding to RI=2, the obtained SINR A preset value ^MM? 2 (usually an empirical value) is added, and then the corrected SINR is passed through a mapping table of CQI and SINR to obtain a CQI corresponding to RI=1.

步驟 S1013、分别对两种传输模式的 CQI进行滤波，得到最终的两种传输模式的 CQI。 Step S1013: Filter CQIs of the two transmission modes to obtain CQIs of the final two transmission modes.

得到两种传输模式的 CQI后，分别对其各自的 CQI进行滤波处理， CQI 的滤波处理方法为： After obtaining the CQI of the two transmission modes, respectively filtering the respective CQIs, and the filtering processing method of the CQI is:

CQI_cur = a CQI_last + (l- a) CQI_cur 其中，表示本调度时刻通过上报或折算得到的 CQI, 〖。表示上一终端上报宽带 CQI的时刻滤波处理后得到的 CQI, "表示滤波系数，取值范围为"^€( ^ι)。如果该 CQI上报时刻为首次上报，则滤波系数《 = 0。 CQI _cur = a CQI _last + (l- a) CQI _cur where, represents the CQI obtained by reporting or discounting at this scheduling time. The CQI obtained after the time-filtering process of reporting the wideband CQI on the previous terminal, "represents the filter coefficient, and the value range is " ^€ ( ^ι ). If the CQI reporting time is reported for the first time, the filter coefficient is "=0.

本实施例中，通过终端上报的 CQI进行折算、滤波，得到两种传输模式的 CQI, 进一步精确了两种传输模式的 CQI数据。 In this embodiment, the CQI of the two transmission modes is obtained by converting and filtering the CQI reported by the terminal, and the CQI data of the two transmission modes is further refined.

参照图 4, 在上述实施例中，步驟 S101可进一步包括： Referring to FIG. 4, in the foregoing embodiment, step S101 may further include:

步驟 S1014、通过自适应调制编码 AMC更新和 /或满足预设条件时对进行更新。 Step S1014: Update the AMC by adaptive modulation coding and/or when the preset condition is met.

步驟 S1014可与步驟 S1011、 S1012、 S1013同时进行，也可在步驟 S1011、 S1012、 S1013 中任一步之前或之后，所述外环调整参数的维护包括通过 AMC得到的外环参数 Δ (^和满足预设条件时对 Δ (^进行的调整。 Step S1014 may be performed simultaneously with steps S1011, S1012, and S1013, or before or after any of steps S1011, S1012, and S1013, the maintenance of the outer loop adjustment parameter includes an outer loop parameter Δ obtained by AMC (^ and satisfies Adjustment of Δ (^) when the condition is preset.

具体地，通过 AMC得到外环参数可以是常用的多种方法。如下为一种常用方法：通过在一预设的窗长（通常为经验值）内统计 BLER, 若 BLER高于预设的门限值⁷ (通常为经验值，可取 10%或其它经验值），则将 Δ (^向下调整一个步长^<^ (通常为经验值，可取 1 ), 若 BLER 低于预设的门限值⁷ (通常为经验值， ^TK r2 ^^ Th_bl£r2≤Th_{blerl )?} 则将 A CS向上调整一个步长^ ₂ (通常为经验值，可取 1 ), 若 BLER满足Specifically, obtaining the outer loop parameter by AMC can be a plurality of methods commonly used. The following is a common method: By counting the BLER within a preset window length (usually the empirical value), if the BLER is above the preset threshold of ⁷ (usually the empirical value, 10% or other empirical value may be used) , then adjust Δ (^ downward by one step ^<^ (usually empirical value, may take 1), if BLER is lower than the preset threshold of ⁷ (usually empirical value, ^T K r2 ^^ Th _{bl£ R2} _{≤Th blerl )?} A CS is adjusted upward by a step size ^ ₂ (usually an empirical value, which can take 1), if the BLER is satisfied

^T r2^{≤ BLER}≤ ^TKerl , 则 AMCS保持不变。 ^{When T} r2 ^{≤ BLER} ≤ ^T Kerl , the AMCS remains unchanged.

具体地，满足预设条件时对 Δ (^进行调整的方法可为如下方法：在一个预设的窗长（通常为经验值）内分别统计两种传输模式使用的次数和频谱效率的均值，如果 RI=1使用的次数低于一预设门限（通常为经验值，可取窗长的 5% ), 且窗长内统计的 RI=2的平均频谱效率小于 RI=1 能支持的最大频谱效率，则对 RI=1 的进行修正，修正按照如下公式进行： Specifically, the method for adjusting Δ (^ when the preset condition is met may be as follows: counting the number of times of using the two transmission modes and the mean of the spectral efficiency in a preset window length (usually an empirical value), If the number of times RI=1 is used is lower than a preset threshold (usually the empirical value, 5% of the window length can be taken), and the average spectral efficiency of RI=2 in the window length is less than the maximum spectral efficiency that RI=1 can support. , then correct the RI=1, the correction is carried out according to the following formula:

AMCS = AMCS + Amcs_ril AMCS = AMCS + Amcs _ril

否则如果 RI=2使用的次数低于一预设门限（通常为经验值，可取窗长的 5% )，且窗长内统计的 RI=1的平均频谱效率大于 RI=1能支持的一较小的频谱效率（通常为经验值，可取 MCS=5时 RI=1对应的频谱效率），则对 RI=2的 S进行修正，修正按照如下公式进行： Otherwise, if the number of times RI=2 is used is lower than a preset threshold (usually the empirical value, 5% of the window length may be taken), and the average spectral efficiency of RI=1 in the window length is greater than that supported by RI=1. Small spectral efficiency (usually empirical value, which can be taken as the spectral efficiency corresponding to RI=1 when MCS=5), then the S of RI=2 is corrected, and the correction is performed according to the following formula:

AMCS = AMCS + Amcs_ri2 AMCS = AMCS + Amcs _ri2

其中 Am"_ril和 Δ"7"'·' ₂为预设的步长值，是大于零的整数，可取 L 本实施例中，可选择通过 AMC得到外环调整参数 ^ CS或满足预设条件时对 A CS进行调整，从而修正该 A CS对应的传输模式的频谱效率，避免由于 Δ (^不准确导致的频谱效率预估错误问题。 Among them, Am" _ril and Δ"7"'·' ₂ are preset step values, which are integers greater than zero. It is preferable to use L. In this embodiment, the outer loop adjustment parameter ^ CS can be obtained through AMC or the preset condition is satisfied. The A CS is adjusted to correct the spectral efficiency of the transmission mode corresponding to the A CS, and avoid the spectral efficiency estimation error problem caused by Δ (^ inaccuracy).

参照图 5,提出本发明一种自适应传输模式调度的方法又一实施例，在上述实施例中，还可以包括： Referring to FIG. 5, another embodiment of a method for adaptive transmission mode scheduling according to the present invention is provided. In the foregoing embodiment, the method may further include:

步骤 S12、当所述两种传输模式的频谱效率相同时，选择上一调度时刻的传输模式为本次调度的传输模式；若本次调度是首次调度，选择发射分集模式为传输模式。 Step S12: When the spectrum efficiency of the two transmission modes is the same, the transmission mode of the last scheduling moment is selected as the transmission mode of the scheduling; if the scheduling is the first scheduling, the transmission diversity mode is selected as the transmission mode.

如果两种传输模式的频谱效率一致，则选择上一调度时刻使用的传输模式作为本次下发数据的传输模式；若本次调度是首次调度时，选择发射本实施例中，对两种传输模式的频谱效率一致时的传输模式作出选择。参照图 6,提出本发明一种自适应传输模式调度的装置一实施例，包括：预估模块 10, 设置为根据终端上报的信道质量指示符 CQI和基站维护的外环调整参数 Δ (^，定时预估两种传输模式的频谱效率； If the spectrum efficiency of the two transmission modes is the same, the transmission mode used in the previous scheduling time is selected as the transmission mode of the current data transmission; if the current scheduling is the first scheduling, the transmission is selected. In this embodiment, a selection is made for a transmission mode when the spectral efficiencies of the two transmission modes are the same. Referring to FIG. 6, an embodiment of an apparatus for adaptive transmission mode scheduling according to the present invention includes: an estimation module 10 configured to adjust a parameter Δ (^ according to a channel quality indicator CQI reported by a terminal and an outer ring maintained by a base station. Timing estimation of the spectral efficiency of the two transmission modes;

修正模块 30, 设置为在满足预设条件时，对频谱效率进行修正；选择模块 20, 设置为选择所述频谱效率大的传输模式作为本次调度的传输模式。 The correction module 30 is configured to correct the spectral efficiency when the preset condition is met; and the selection module 20 is configured to select the transmission mode with the spectral efficiency to be the transmission mode of the current scheduling.

本实施例中，自适应传输模式调度的装置可为基站，也可内置或外置于基站的单独装置。 In this embodiment, the apparatus for adaptive transmission mode scheduling may be a base station, or may be a separate device built in or external to the base station.

自适应传输模式调度的装置接收终端上报的 CQI, 预估模块 10通过终端上报的 CQI, 分别获得两种传输模式 R1和 R2的 MCS初始值；再利用基站维护的外环调整参数，获得传输模式 R1和 R2的频谱效率。 The apparatus for adaptive transmission mode scheduling receives the CQI reported by the terminal, and the estimation module 10 obtains the initial MCS values of the two transmission modes R1 and R2 respectively by using the CQI reported by the terminal; and then uses the outer ring adjustment parameters maintained by the base station to obtain the transmission mode. The spectral efficiency of R1 and R2.

选择模块 20根据已预估出的两种传输模式的频谱效率，选择频谱效率大的传输模式作为下发数据的传输模式。 The selection module 20 selects a spectrally efficient transmission mode as the transmission mode of the delivered data based on the estimated spectral efficiency of the two transmission modes.

本实施例中，基于频谱效率进行传输模式的选择，可以选择频谱效率较高的 ΜΙΜΟ传输模式，有效提高***吞吐量，解决了由于终端上报 RI 不准确而导致选择错误传输模式， ***吞吐量性能差的问题。 In this embodiment, the selection of the transmission mode based on the spectrum efficiency can select the ΜΙΜΟ transmission mode with higher spectral efficiency, effectively improve the system throughput, and solve the problem of selecting the erroneous transmission mode due to the inaccurate RI reported by the terminal, and the system throughput performance. Poor question.

参照图 7, 在一实施例中，预估模块 10可包括： Referring to Figure 7, in an embodiment, the estimation module 10 can include:

获取单元 11 , 设置为获取两种传输模式的 CQI和； The obtaining unit 11 is set to acquire the CQI sum of the two transmission modes;

计算单元 12, 设置为根据所述 CQI和计算两种模式的 MCS; 查找单元 13 , 设置为根据所述两种模式的 MCS, 查找预设的 MCS与频谱效率的映射表，得到两种模式的频谱效率。 The calculating unit 12 is configured to calculate the MCS according to the CQI and the two modes; the searching unit 13 is configured to search the preset MCS and the spectrum efficiency mapping table according to the MCS of the two modes, and obtain the two modes. Spectral efficiency.

根据获取单元 11得到的两种传输模式的 CQI, 计算单元 12参照 CQI 与 MCS 初始值的映射表（该映射关系为预先设置，设置的准则为，当一 MCS对应的频谱效率与上报 CQI对应的频谱效率最接近时，则将该 MCS 设置为该 CQI对应的 MCS初始值），分别得到两种传输模式的 MCS初始值（记为 ^MC « , 然后计算单元 12 利用两种传输模式的外环调整参数 S , 对进行修正得到两种传输模式最终的 MCS, 计算单元 12修正过程按照如下公式进行： According to the CQI of the two transmission modes obtained by the obtaining unit 11, the calculating unit 12 refers to the mapping table of the initial values of the CQI and the MCS (the mapping relationship is preset, and the set criterion is: When the spectral efficiency corresponding to the MCS is closest to the spectral efficiency corresponding to the reported CQI, the MCS is set to the initial MCS value corresponding to the CQI, and the MCS initial values of the two transmission modes are respectively obtained (denoted as ^MC «, and then the calculation unit 12 The outer loop adjustment parameter S of the two transmission modes is used to correct the final MCS of the two transmission modes. The correction process of the calculation unit 12 is performed according to the following formula:

MCS = MCS_init + AMCS MCS = MCS _init + AMCS

根据得到的两种传输模式最终的 MCS, 查找单元 13通过预先设置的 MCS与频谱效率的映射表（根据仿真得到），分别得到两种传输模式的频谱效率。 According to the final MCS of the two transmission modes obtained, the search unit 13 obtains the spectral efficiencies of the two transmission modes by using a preset mapping table of MCS and spectral efficiency (according to the simulation).

本实施例中，根据终端上报的 CQI和基站维护的外环调整参数获得各传输模式的频谱效率，避免了在 FDD模式下利用上行信道参数进行传输模式判决，结果不准确的问题。 In this embodiment, the spectrum efficiency of each transmission mode is obtained according to the CQI reported by the terminal and the outer loop adjustment parameter maintained by the base station, and the transmission mode decision using the uplink channel parameter in the FDD mode is avoided, and the result is inaccurate.

参照图 8, 在上述实施例中，获取单元 11可包括： Referring to FIG. 8, in the above embodiment, the obtaining unit 11 may include:

确定子单元 111 , 设置为确定终端上报的 CQI对应的传输模式；折算子单元 112, 设置为根据所述终端上报的 CQI折算得到另一传输模式的 CQI; The determining subunit 111 is configured to determine a transmission mode corresponding to the CQI reported by the terminal; the conversion subunit 112 is configured to obtain a CQI of another transmission mode according to the CQI reported by the terminal;

滤波子单元 113, 设置为分别对两种传输模式的 CQI进行滤波，得到最终的两种传输模式的 CQI。 The filtering sub-unit 113 is configured to separately filter the CQIs of the two transmission modes to obtain the CQIs of the final two transmission modes.

根据本调度时刻是否有宽带 CQI上报进行不同处理。若有宽带 CQI上报，确定子单元 111确定该 CQI对应的 RI, 则该 RI对应的 CQI就是终端上报的 CQI。若没有宽带 CQI上报，且本次调度不是首次调度，则两种传输模式沿用上一调度时刻使用的 CQI。两种传输模式的 CQI的初始值，为一可配置的预设值（经验值，可取 0 )。若没有宽带 CQI上报，且本次调度是首次调度，则传输模式确定为发射分集，即 RI=1。 According to whether there is broadband CQI reporting at this scheduling time, different processing is performed. If there is a wideband CQI report, the determining subunit 111 determines the RI corresponding to the CQI, and the CQI corresponding to the RI is the CQI reported by the terminal. If there is no broadband CQI reporting, and this scheduling is not the first scheduling, the two transmission modes use the CQI used in the previous scheduling moment. The initial value of the CQI of the two transmission modes is a configurable preset value (experience value, preferably 0). If there is no broadband CQI reporting, and this scheduling is the first scheduling, the transmission mode is determined to be transmit diversity, that is, RI=1.

另一种传输模式的 CQI通过折算子单元 112对上报的 CQI进行折算得到， CQI的折算方法可为： The CQI of another transmission mode is converted by the conversion sub-unit 112 to the reported CQI. To, the conversion method of CQI can be:

将该 CQI通过 CQI与 SINR的映射表（该表格通过仿真得到 ),得到对应的 SINR,如果该 CQI对应的 RI=1 ,则将得到的 SINR减去一预设值 ^ASINR^ (通常为经验值 ), 然后将该修正后的 SINR通过 CQI与 SINR的映射表，得到 RI=2对应的 CQI; 如果该 CQI对应的 RI=2,则将得到的 SINR加上一预设值 ^{M M?}2 (通常为经验值)，然后将该修正后的 SINR通过 CQI与 SINR 的映射表，得到 RI=1对应的 CQI。 The CQI is obtained by using a mapping table of CQI and SINR (the table is obtained by simulation) to obtain a corresponding SINR. If the CQI corresponds to RI=1, the obtained SINR is subtracted by a preset value ^ASINR ^ (usually an empirical value). Then, the corrected SINR is passed through a mapping table of CQI and SINR to obtain a CQI corresponding to RI=2; if the RI=2 corresponding to the CQI, the obtained SINR is added with a preset value ^MM? 2 (usually It is an empirical value), and then the corrected SINR is passed through a mapping table of CQI and SINR to obtain a CQI corresponding to RI=1.

得到两种传输模式的 CQI后，滤波子单元 113分别对其各自的 CQI进行滤波处理， CQI的滤波处理方法为： After obtaining the CQI of the two transmission modes, the filtering sub-unit 113 respectively filters the respective CQIs, and the filtering processing method of the CQI is:

CQI_cur = a CQI_last + (l- a) CQI_cur CQI _cur = a CQI _last + (l- a) CQI _cur

其中表示本调度时刻通过上报或折算得到的 CQI, 表示上一终端上报宽带 CQI的时刻滤波处理后得到的 CQI, "表示滤波系数，取值范围为" ^e (^Q^。如果该 CQI上报时刻为首次上报，则滤波系数《 = 0。 The CQI obtained by reporting or converting the current time of the scheduling time indicates the CQI obtained by the time-filtering process of reporting the broadband CQI of the previous terminal, "representing the filter coefficient, and the value range is " ^e ( ^Q ^. If the CQI reporting time is first) The second report, then the filter coefficient " = 0.

参照图 9, 在上述实施例中，获取单元 11可以进一步包括： Referring to FIG. 9, in the above embodiment, the obtaining unit 11 may further include:

更新子单元 114, 设置为通过自适应调制编码 AMC更新和 /或满足预设条件时对 CS进行更新。 Update sub-unit 114, set to update the CS when the AMC is updated by adaptive modulation and/or when the preset condition is met.

更新子单元 114通过 AMC得到的外环参数和满足预设条件时对进行的调整。 Update subunit 114 The outer loop parameters obtained by the AMC and the adjustments made when the preset conditions are met.

具体地，更新子单元 114通过 AMC得到外环参数可以是常用的多种方法。如下为一种常用方法：通过在一预设的窗长（通常为经验值）内统计 BLER,若 BLER高于预设的门限值 (通常为经验值，可取 10% 或其它经验值），则将 Δ (^向下调整一个步长^<^ (通常为经验值，可取 1 ), 若 BLER低于预设的门限值⁷ (通常为经验值， ⁷⁷¹ ^需满足 lh_bler2 < lh_blerl ), 则将 A CS向上调整一个步长^ ₂ (通常为经验值，可取 1 ), 若 ΒΙΈ ί满 BLER≤Th_blerl , 则 Δ (^保持不变。 Specifically, the update sub-unit 114 obtains the outer loop parameter through the AMC may be a plurality of methods commonly used. The following is a common method: By counting the BLER within a preset window length (usually the empirical value), if the BLER is above a preset threshold (usually an empirical value, 10% or other empirical value), Then Δ (^ is adjusted downward by one step ^<^ (usually empirical value, can take 1), if BLER is lower than the preset threshold of ⁷ (usually empirical value, ⁷⁷¹ ^ needs to be satisfied _{Lh bler2} < lh _blerl ), then adjust A CS up by a step size ^ ₂ (usually experience value, which can take 1). If ΒΙΈ ί full BLER _≤ Th _blerl , then Δ (^ remains unchanged.

具体地，更新子单元 114满足预设条件时对 Δ (^进行调整的方法可为如下方法： Specifically, the method for adjusting Δ (^ when the update sub-unit 114 satisfies the preset condition may be as follows:

在一个预设的窗长（通常为经验值）内分别统计两种传输模式使用的次数和频谱效率的均值，如果 RI=1使用的次数低于一预设门限（通常为经验值，可取窗长的 5% ), 且窗长内统计的 RI=2的平均频谱效率小于 RI=1 能支持的最大频谱效率，则对 RI=1 的 Δ (^进行修正，修正按照如下公式进行： The average number of times the two transmission modes are used and the average of the spectral efficiency are counted in a preset window length (usually the empirical value). If the number of times RI=1 is used is lower than a preset threshold (usually the empirical value, the window is available). The longer 5%), and the average spectral efficiency of RI=2 in the window length is less than the maximum spectral efficiency that RI=1 can support, then the Δ(^ correction of RI=1 is corrected, and the correction is performed according to the following formula:

AMCS = AMCS + Amcs_ril AMCS = AMCS + Amcs _ril

否则如果 RI=2使用的次数低于一预设门限（通常为经验值，可取窗长的 5% ), 且窗长内统计的 RI=1的平均频谱效率大于 RI=1能支持的一较小的频谱效率（通常为经验值，可取 MCS=5时 RI=1对应的频谱效率），则对 RI=2的 CS进行修正 , 修正按照如下公式进行： Otherwise, if the number of times RI=2 is used is lower than a preset threshold (usually the empirical value, 5% of the window length may be taken), and the average spectral efficiency of RI=1 in the window length is greater than that supported by RI=1. Small spectral efficiency (usually empirical value, which can be taken as the spectral efficiency corresponding to RI=1 when MCS=5), then the CS of RI=2 is corrected, and the correction is performed according to the following formula:

AMCS = AMCS + Amcs_ri2 AMCS = AMCS + Amcs _ri2

其中 Δ«^„^ρ Δ«^„·₂为预设的步长值，是大于零的整数，可取 L 本实施例中 , 可选择通过 AMC得到外环调整参数或满足预设条件时对 A CS进行调整，从而修正该 A CS对应的传输模式的频谱效率，避免由于 Δ (^不准确导致的频谱效率预估错误问题。 Δ«^„^ρ Δ«^„· ₂ is a preset step value, which is an integer greater than zero. It can be taken as L. In this embodiment, the outer loop adjustment parameter can be obtained by AMC or the preset condition is met. A CS adjusts to correct the spectral efficiency of the transmission mode corresponding to the A CS, and avoids the spectral efficiency estimation error caused by Δ (^ inaccuracy.

本发明还提出本发明一种自适应传输模式调度的装置又一实施例，在上述实施例中，选择模块 20还设置为： The present invention further provides a further embodiment of the apparatus for adaptive transmission mode scheduling according to the present invention. In the above embodiment, the selection module 20 is further configured to:

当所述两种传输模式的频谱效率相同时，选择上一调度时刻的传输模式为本次调度的传输模式；若本次调度是首次调度，选择发射分集模式为传输模式。 When the spectrum efficiency of the two transmission modes is the same, the transmission mode of the last scheduling moment is selected as the transmission mode of the current scheduling; if the scheduling is the first scheduling, the transmission diversity mode is selected as the transmission mode.

如果两种传输模式的频谱效率一致，则选择模块 20选择上一调度时刻使用的传输模式作为本次下发数据的传输模式；若本次调度是首次调度时，选择模块 20选择发射分集模式为传输模式，即 R=l。 If the spectral efficiency of the two transmission modes is consistent, the selection module 20 selects the last scheduling moment. The transmission mode used is used as the transmission mode of the current data transmission; if the current scheduling is the first scheduling, the selection module 20 selects the transmission diversity mode as the transmission mode, that is, R=l.

本实施例中，对两种传输模式的频谱效率一致时的传输模式作出选择。以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围 , 凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。 In this embodiment, a selection is made for a transmission mode when the spectral efficiencies of the two transmission modes are the same. The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent flow transformation made by the specification and the drawings of the present invention may be directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Claims

权利要求书 Claim

1、一种自适应传输模式调度的方法，其中，该方法包括： A method for adaptive transmission mode scheduling, wherein the method comprises:

选择频谱效率大的传输模式作为本次调度的传输模式。 A transmission mode with a high spectral efficiency is selected as the transmission mode of the current scheduling.

2、如权利要求 1所述的自适应传输模式调度的方法，其中，所述根据终端上报的 CQI 和基站维护的 Δ (^，定时预估两种传输模式的频谱效率为： 2. The method for adaptive transmission mode scheduling according to claim 1, wherein the spectrum efficiency of the two transmission modes according to the CQI reported by the terminal and the Δ (^, timing estimation) maintained by the base station is:

获取两种传输模式的 CQI和 Δ (^； Get the CQI and Δ (^; of the two transmission modes

根据所述 CQI和 , 计算两种模式的调制编码方案 MCS; Calculating two modes of modulation coding scheme MCS according to the CQI sum;

根据所述两种模式的 MCS, 查找预设的 MCS与频谱效率的映射表，得到所述两种模式的频谱效率。 According to the MCS of the two modes, a mapping table of preset MCS and spectral efficiency is searched, and spectral efficiencies of the two modes are obtained.

3、如权利要求 2所述的自适应传输模式调度的方法，其中，所述获取两种传输模式的 CQI为： 3. The method of adaptive transmission mode scheduling according to claim 2, wherein the acquiring the CQI of the two transmission modes is:

分别对两种传输模式的 CQI 进行滤波，得到最终的两种传输模式的 Filtering the CQI of the two transmission modes separately to obtain the final two transmission modes.

CQI。 CQI.

4、如权利要求 2或 3所述的自适应传输模式调度的方法，其中，所述获取两种传输模式的 CS为： 4. The method of adaptive transmission mode scheduling according to claim 2 or 3, wherein the acquiring the CS of the two transmission modes is:

通过自适应调制编码 AMC更新和 /或满足预设条件时对进行更新。 The AMC updates and/or updates to the preset conditions when adaptive modulation is applied.

5、如权利要求 1至 3中任一项所述的自适应传输模式调度的方法，其中，该方法还包括：当所述两种传输模式的频谱效率相同时，选择上一调度时刻的传输模式为本次调度的传输模式； The method of adaptive transmission mode scheduling according to any one of claims 1 to 3, wherein the method further comprises: When the spectrum efficiency of the two transmission modes is the same, the transmission mode of the last scheduling moment is selected as the transmission mode of the scheduling;

6、一种自适应传输模式调度的装置，其中，该装置包括：预估模块、修正模块和选择模块；其中， 6. An apparatus for adaptive transmission mode scheduling, wherein the apparatus comprises: an estimation module, a correction module, and a selection module; wherein

7、如权利要求 6所述的自适应传输模式调度的装置，其中，所述预估模块包括：获取单元，计算单元和查找单元；其中， The apparatus for adaptive transmission mode scheduling according to claim 6, wherein the estimation module comprises: an acquisition unit, a calculation unit, and a search unit;

所述获取单元，设置为获取两种传输模式的 CQI和 Δ (^； The obtaining unit is configured to acquire CQI and Δ of two transmission modes (^;

所述计算单元，设置为根据所述 CQI和计算两种模式的 MCS; 所述查找单元，设置为根据所述两种模式的 MCS, 查找预设的 MCS 与频谱效率的映射表，得到两种模式的频谱效率。 The calculating unit is configured to calculate an MCS according to the CQI and the two modes. The searching unit is configured to search for a preset MCS and a spectrum efficiency mapping table according to the MCS of the two modes, and obtain two types of mappings. The spectral efficiency of the mode.

8、如权利要求 7所述的自适应传输模式调度的装置，其中，所述获取单元包括：确定子单元、折算子单元和滤波子单元；其中， The apparatus for adaptive transmission mode scheduling according to claim 7, wherein the obtaining unit comprises: a determining subunit, a converting subunit, and a filtering subunit; wherein

9、如权利要求 7或 8所述的自适应传输模式调度的装置，其中，所述获取单元还包括：更新子单元，设置为通过自适应调制编码 AMC更新和 /或满足预设条件时对 S进行更新。 The apparatus for adaptive transmission mode scheduling according to claim 7 or 8, wherein the acquiring unit further comprises: The sub-unit is updated to be set to update S when the AMC is updated by adaptive modulation and/or when the preset condition is met.

10、如权利要求 6至 8中任一项所述的自适应传输模式调度的装置，其中，所述选择模块还设置为： The apparatus for adaptive transmission mode scheduling according to any one of claims 6 to 8, wherein the selection module is further configured to: