WO2011098012A1 - 多载波系统中的数据传输方法、系统和设备 - Google Patents

多载波系统中的数据传输方法、系统和设备 Download PDF

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Publication number
WO2011098012A1
WO2011098012A1 PCT/CN2011/070806 CN2011070806W WO2011098012A1 WO 2011098012 A1 WO2011098012 A1 WO 2011098012A1 CN 2011070806 W CN2011070806 W CN 2011070806W WO 2011098012 A1 WO2011098012 A1 WO 2011098012A1
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Prior art keywords
uplink
terminal
time unit
sps
uplink transmission
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PCT/CN2011/070806
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English (en)
French (fr)
Inventor
赵亚利
李国庆
许芳丽
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电信科学技术研究院
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Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to US13/578,234 priority Critical patent/US8619617B2/en
Priority to EP11741883.0A priority patent/EP2536234B1/en
Publication of WO2011098012A1 publication Critical patent/WO2011098012A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/52Allocation or scheduling criteria for wireless resources based on load

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a data transmission method, system and device in a multi-carrier system. Background technique
  • LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • LTE-A system is required to be well compatible with the LTE system. Based on the need to increase the peak rate, compatibility with LTE systems, and full use of frequency resources, the LTE-A system introduces Carrier Aggregation (CA) technology.
  • CA Carrier Aggregation
  • the CA technology refers to a mode in which multiple component carriers (CCs) are included in uplink and downlink in a cell, instead of a mode in which only one set of component carriers is present in LTE and previous wireless communication systems.
  • the base station (eNB) uniformly manages and schedules multiple sets of component carriers in the cell. Member carriers are continuous or non-contiguous. For compatibility with LTE systems, the maximum bandwidth per component carrier is 20 MHz.
  • one terminal can receive downlinks on multiple downlink member carriers at the same time.
  • the downlink layer 2 and the uplink layer 2 of the LTE-A system are similar to the LTE system in:
  • the structure of the Packet Data Convergence Protocol (PDCP) and the Radio Link Control (RLC) is the same as that of the LTE system.
  • the Medium Access Control (MAC) layer function is the same as that of the LTE system. Mainly for the terminal Row scheduling, including priority and resource allocation.
  • Each member carrier has an independent hybrid automatic repeat request (HQQ) entity; each component carrier corresponds to an independent transport channel; each member carrier independently organizes a transport block (TB) , retransmission cannot exchange member carriers.
  • HQQ hybrid automatic repeat request
  • Dynamic scheduling means that each time the terminal needs to send and receive data, the network side sends dynamic scheduling signaling to the terminal through a Physical Downlink Control Channel (PDCCH). After receiving the dynamic scheduling signaling, the terminal uses the dynamic scheduling. The resource indicated by the signaling performs data transmission and reception.
  • the LTE system introduces Semi-Persistent Scheduling (SPS) for services with basically the same packet size and regular arrival time interval, and specifies that one terminal can only configure one SPS resource.
  • SPS Semi-Persistent Scheduling
  • Semi-persistent scheduling means that the network side configures the semi-persistent scheduling period and the semi-persistent scheduling cell radio network temporary identifier (SPS C-RNTI) to the terminal in advance, and sends semi-persistent scheduling signaling to the terminal. After detecting the semi-persistent scheduling signaling for the terminal according to the configured SPS C-RNTI, the terminal performs data transmission and reception using the resources indicated by the semi-persistent scheduling signaling at regular intervals according to the configured semi-persistent scheduling period.
  • SPS C-RNTI semi-persistent scheduling cell radio network temporary identifier
  • the semi-persistent scheduling period and the used SPS C-RNTI are configured by the Radio Resource Control (RRC) entity to the terminal, and the semi-persistent scheduling signaling is sent to the terminal through the PDCCH.
  • RRC Radio Resource Control
  • the LTE system has only one component carrier. If spatial multiplexing is not considered, a terminal can only transmit one TB in one subframe. Therefore, if the terminal has SPS resource allocation in a certain subframe, it receives a dynamic scheduling PDCCH for the subframe. For signaling, the terminal can only perform data transmission according to the indication of dynamic scheduling signaling in the subframe, ignoring SPS resource allocation.
  • one terminal can simultaneously perform on multiple component carriers in one subframe.
  • at least one TB can be carried on each CC.
  • the network side schedules the uplink transmission of the terminal on the subframe to include both SPS transmission and dynamic scheduling transmission, how is the terminal according to the network side?
  • the scheduling transmits data in the time unit, and there is currently no specific implementation.
  • the embodiment of the present invention provides a data transmission method in a multi-carrier system, which is used to solve the scheduling of the same time unit on the network side in the multi-carrier system, including the SPS and the dynamic scheduling, and how the terminal is scheduled according to the network side at the time.
  • a data transmission method in a multi-carrier system comprising:
  • the network side schedules the local terminal to use the uplink component carrier to perform semi-persistent scheduling SPS uplink transmission in the time unit, and simultaneously schedules the number of uplink component carriers that can be used by the terminal to transmit.
  • the terminal selects some or all of the uplink component carriers of the plurality of uplink member carriers that can be used, and performs SPS uplink transmission and/or dynamic scheduling uplink transmission in the time unit by using the selected uplink component carriers.
  • a terminal comprising:
  • a determining unit configured to: before the uplink data is transmitted by the time unit, determine, by the network side, that the uplink component carrier uses the uplink component carrier to perform semi-persistent scheduling SPS uplink transmission in the time unit, and simultaneously performs uplink transmission of the uplink component carrier that can be used for uplink transmission.
  • the number is multiple;
  • a transmission unit configured to select some or all of the uplink component carriers of the plurality of uplink component carriers that can be used, and perform SPS uplink transmission and/or dynamic scheduling uplink transmission in the time unit by using the selected uplink component carriers.
  • the terminal before using the time unit to transmit uplink data, if the terminal determines that the network side schedules the local terminal to use the uplink component carrier to perform SPS uplink transmission in the time unit, and the terminal According to the network side scheduling, the number of uplink member carriers that can be used for uplink transmission is multiple, and then all or part of the uplink member carriers of the plurality of uplink member carriers that can be used are selected, and for each uplink component carrier selected, according to The scheduling on the network side uses the uplink component carrier to perform SPS uplink transmission and/or dynamic scheduling uplink transmission in the time unit. It can be seen that the present invention solves the problem of how the terminal transmits data in the time unit according to the scheduling of the network side when the scheduling of the same time unit by the network side in the multi-carrier system includes both SPS and dynamic scheduling.
  • FIG. 1 is a schematic flowchart of a data transmission method in a multi-carrier system according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a data transmission device in a multi-carrier system according to an embodiment of the present invention.
  • the embodiment of the invention provides a data transmission method in the multi-carrier system.
  • the terminal may select an uplink CC used for uplink transmission according to a certain policy, and perform SPS uplink transmission on the selected uplink CC and/or Or dynamically schedule uplink transmissions.
  • the time unit refers to a subframe.
  • a data transmission method in a multi-carrier system specifically includes the following steps:
  • Step 10 Before using the time unit to transmit the uplink data, the terminal determines that the network side schedules the terminal to use the uplink member carrier wave to perform SPS uplink transmission in the time unit, and determines that the network side scheduling network side schedules the terminal to perform uplink transmission.
  • the number of uplink component carriers is multiple;
  • Step 11 The terminal selects all or part of the uplink component carriers of the plurality of uplink member carriers that can be used, and uses the uplink member according to the scheduling of the network side for the selected uplink member carrier waves.
  • the terminal receives the uplink member from the network side to indicate that the terminal uses the uplink member.
  • the network side schedules the local terminal to perform dynamic scheduling uplink transmission in the time unit by using the uplink component carrier; the terminal configures the SPS including the time unit for the terminal on the network side.
  • the network side also schedules the terminal to perform SPS uplink transmission in the time unit by using the uplink member carrier wave.
  • the first type after receiving the dynamic scheduling signaling sent by the network to indicate that the terminal uses the uplink component carrier to perform uplink transmission in the time unit, the terminal determines that the network side is the SPS uplink transmission resource configured by the terminal. Whether the time unit is included, and if yes, determining that the network side schedules the terminal to perform SPS uplink transmission in the time unit by using the uplink component carrier, and determines that the network side adjustment is the second type, and the terminal receives the network side configured for the terminal. After the information of the SPS uplink transmission resource of the time unit, it is determined whether the time unit sent by the network side is received in each time unit in which the SPS resource allocation takes effect, and is used to indicate that the terminal uses the uplink component carrier. Dynamic scheduling signaling for uplink transmission in the time unit, if yes, determining that the network side scheduling network terminal schedules the terminal to perform SPS uplink transmission in the time unit by using the uplink component carrier.
  • the terminal can also perform the above step 10 at any other time before the uplink data is transmitted by using the time unit.
  • step 10 the method for determining, by the network side, the number of uplink component carriers that the terminal can use for uplink transmission is:
  • the time unit Before using the time unit to transmit the uplink data, it is determined that the received ones are used to indicate that the terminal is configured to enable the member to wave, and before the uplink data is transmitted by using the time unit, determining that the network side is the number of uplink carriers included in the terminal configuration collection.
  • the extremely network side schedules the number of uplink member carriers that the terminal can use for uplink transmission.
  • step 11 the terminal performs uplink SPS uplink transmission in the time unit by using the uplink component carrier
  • 11 070806 refers to that the terminal periodically uses the uplink component carrier to transmit uplink data according to the priority of the uplink data to be transmitted by the terminal in the time unit according to the configured SPS uplink transmission resource.
  • the terminal uses the uplink member carrier to perform dynamic scheduling uplink transmission in the time unit, which means that the terminal performs uplink data transmission in the time unit by using the uplink member carrier wave according to the received dynamic scheduling signaling indication.
  • the specific implementation of this step can use a variety of methods, the following examples illustrate:
  • the terminal selects all uplink member carriers in the plurality of uplink member carriers that can be used. For the selected uplink member carrier waves, if the network side schedules the terminal to use the uplink member carrier wave to perform dynamic scheduling uplink transmission in the time unit simultaneously And the SPS uplink transmission, using the uplink component carrier to perform uplink transmission only according to dynamic scheduling in the time unit, without performing SPS uplink transmission;
  • the SPS uplink transmission is not performed; if the network side schedules the uplink component carrier to perform only SPS uplink transmission in the time unit, the uplink component carrier is used to perform only SPS uplink transmission in the time unit without dynamic Schedule uplink transmission.
  • dynamic scheduling on one CC cannot replace SPS scheduling on other CCs. Only dynamic scheduling on the same CC can replace SPS transmission on the CC.
  • the terminal selects all the uplink component carriers of the plurality of uplink member carriers that can be used. For the selected uplink member carriers, if the network side schedules the terminal to use the uplink component carrier to perform dynamic scheduling uplink transmission and SPS simultaneously in the time unit, In the uplink transmission, the uplink component carrier is used to perform only SPS uplink transmission in the time unit, and the uplink transmission is not dynamically scheduled; if the network side adjustment uses the uplink component carrier to perform uplink transmission only according to the dynamic scheduling in the time unit, The SPS uplink transmission is not performed; if the network side schedules the uplink component carrier to perform only SPS uplink transmission in the time unit, the uplink component carrier is used to perform only SPS uplink transmission in the time unit without dynamic Schedule uplink transmission. In this example, dynamic scheduling on a CC cannot be taken. Substitute the SPS transmission on the same CC.
  • the terminal selects, from the plurality of uplink member carriers that can be used, the uplink member carriers selected by the uplink member that meet the following conditions, and the terminal uses the uplink member carrier wave to perform uplink transmission only according to the dynamic scheduling in the time unit, instead of Perform SPS uplink transmission.
  • the dynamic scheduling on one CC can replace the SPS scheduling of other CCs.
  • the terminal selects an uplink member carrier that satisfies the following conditions from the plurality of uplink member carriers that can be used:
  • the network side schedules the terminal to perform SPS uplink transmission in the time unit by using the row member carrier.
  • the terminal uses the uplink component carrier to perform only SPS uplink transmission in the time unit without dynamically scheduling uplink transmission.
  • the time unit in the present invention may be a subframe.
  • the present invention provides a method for processing the relationship between the two in a multi-carrier system for the same terminal if dynamic scheduling and SPS scheduling occur simultaneously in the same subframe.
  • the method is as follows:
  • the terminal If there is SPS resource allocation and dynamic scheduling resource allocation on the same CC, data transmission is performed only according to the dynamically scheduled resource allocation, and SPS resource allocation is ignored. If there are SPS resource allocation and dynamic scheduling resource allocation on different CCs, the terminal performs data transmission according to dynamic scheduling on only dynamically scheduled CCs, and performs data transmission according to SPS on CCs with only SPS resource allocation.
  • the carrier numbers are CC1, CC2, and CC3, respectively.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the base station configures the SPS uplink transmission resource including the subframe I on the CC1, and the terminal obtains the number of transmissions by using the carrier CC1 in the subframe I by analyzing the PDCCH.
  • the dynamic scheduling signaling the method for processing the relationship between the two in the case of simultaneous dynamic scheduling and SPS scheduling in the same subframe is processed, and the terminal should follow the dynamic scheduling signaling in the subframe I.
  • the instructions for data transmission are as follows:
  • Step S01 The base station configures a period T and an SPS C-R TI for the semi-persistent scheduling of the CC1 to the terminal;
  • Step S02 The base station sends a PDCCH including the SPS C-RNTI to the terminal, and allocates the physical resource used by the SPS transmission on the CC1, and the terminal saves the information such as the PDCCH transmission time and the SPS resource indicated by the SPS.
  • Step S03 The base station sends dynamic scheduling signaling indicating that the terminal uses the subframe I for uplink transmission on the CC1, and the terminal determines, according to the previously stored SPS related information, that the subframe I has SPS transmission on the CC1.
  • Step S04 After receiving the dynamic scheduling signaling, the terminal processes the relationship between the two in the case that the dynamic scheduling and the SPS scheduling occur simultaneously in the same subframe, according to the indication of the dynamic scheduling signaling on the CC1. Uplink transmission is performed using subframe I.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the base station configures the SPS uplink transmission resource including the subframe I on the CC1, and the terminal obtains the dynamic scheduling signaling that the terminal uses the carrier CC2 to transmit data on the subframe I by analyzing the PDCCH, according to the foregoing.
  • the method for processing the relationship between the two processes in the case of simultaneous dynamic scheduling and SPS scheduling in the same subframe is processed, and the terminal may use the subframe I to perform data transmission on the CC1 according to the configured SPS uplink transmission resource, according to The indication of dynamic scheduling signaling uses subframe I for data transmission on CC2, as follows:
  • Step S21 The base station configures the period T and the SPS C-RNTI for the semi-persistent scheduling of the CC1 to the terminal;
  • Step S22 The base station sends a PDCCH including the SPS C-RNTI to the terminal, allocates the physical resource used by the SPS transmission on the CC1, and the terminal stores the PDCCH transmission time and the SPS resource indicated by the PDCCH.
  • Step S23 The base station sends a command to the terminal to instruct the terminal to use the subframe I for uplink transmission on the CC2. Dynamic scheduling signaling, the terminal determines that the subframe I has SPS transmission on CC1 according to the SPS related information stored in step S22.
  • Step S24 After the terminal receives the dynamic scheduling signaling, according to the foregoing method for processing the relationship between the dynamic scheduling and the SPS scheduling in the same subframe, the configured SPS uplink transmission resource is on the CC1.
  • the data transmission is performed by using the subframe I
  • the uplink transmission is performed by using the subframe I on the CC2 according to the indication of the dynamic scheduling signaling.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the base station configures the SPS uplink transmission resource including the subframe I on the CC1 and the CC3, and the terminal obtains the dynamic scheduling signaling that the local terminal uses the carrier CC2 to transmit data on the subframe I by analyzing the PDCCH.
  • the terminal may use the subframe I according to the configured SPS uplink transmission resource on the CC1 and the CC3.
  • Step S31 The base station allocates a period T and an SPS C-NTI for semi-persistent scheduling of CC1 and CC3 to the terminal;
  • Step S32 The base station separately transmits the PDCCH for the SPS C-RNTI transmitted by the SPS on the CC1 and the CC3 to the terminal, and allocates the physical resources used for the SPS transmission on the CC1 and the CC3, and the terminal stores the information such as the PDCCH transmission time and the SPS resource allocated by the PDCCH. ;
  • Step S33 The base station sends dynamic scheduling signaling indicating that the terminal uses the subframe I for uplink transmission on the CC2, and the terminal determines, according to the previously stored SPS related information, that the subframe I has SPS transmission on CC1 and CC3.
  • Step S34 After receiving the dynamic scheduling signaling, the terminal processes the relationship between the two according to the foregoing method for simultaneously performing dynamic scheduling and SPS scheduling in the same subframe, according to the configured SPS uplink transmission resource in CC1.
  • the data transmission is performed by using the subframe I on the CC3, and the uplink transmission is performed by using the subframe I on the CC2 according to the indication of the dynamic scheduling signaling.
  • a terminal is also provided in the embodiment of the present invention. Since the principle of the terminal solving the problem is similar to the data transmission method in the multi-carrier system, the implementation of the terminal may be To refer to the implementation of the method, the repetition will not be repeated.
  • an embodiment of the present invention further provides a terminal, where the terminal includes:
  • a determining unit 20 configured to determine a network side scheduling book before using the time unit to transmit uplink data
  • scheduling the number of uplink component carriers that the terminal can use for uplink transmission is multiple;
  • the transmission unit 21 is configured to select all or part of the uplink component carriers of the plurality of uplink component carriers that can be used, and use the uplink component according to the scheduling of the network side for the selected uplink member carrier waves.
  • the determining unit 20 is configured to:
  • the input is performed;
  • the network side determines that the network side schedules the local terminal to use the uplink component carrier to perform the time unit Dynamically schedule uplink transmission.
  • the network side after receiving the dynamic scheduling signaling sent by the network side to indicate that the terminal uses the uplink component carrier to perform uplink transmission in the time unit, determine whether the SPS uplink transmission resource configured by the network side for the terminal includes The time unit, if yes, determining that the network side schedules the terminal
  • the network side After receiving the information about the SPS uplink transmission resource of the time unit configured by the network side, it is determined whether the network side sends the information sent by the network side to indicate the current location.
  • Line transmission and the network side also schedules the terminal to use the uplink component carrier to perform in the time unit.
  • SPS uplink transmission SPS uplink transmission.
  • the transmission unit 21 is used to:
  • the uplink component carrier For the selected uplink member carrier, if the network side schedules the terminal to perform dynamic scheduling uplink transmission and SPS uplink transmission in the time unit by using the uplink component carrier, the uplink component carrier is used only in the time unit. Dynamic scheduling for uplink transmission; if the network side schedules the terminal to use the uplink member carrier to perform only dynamic scheduling uplink transmission in the time unit, the uplink component carrier is used to perform uplink transmission only according to dynamic scheduling in the time unit. If the network side schedules the terminal to use the uplink component carrier to perform only SPS uplink transmission in the time unit, the uplink component carrier is used to perform only SPS uplink transmission in the time unit.
  • the transmission unit 21 is used to:
  • an uplink component carrier that satisfies the following conditions: the network side scheduling the terminal uses the row component carrier to perform dynamic scheduling uplink transmission in the time unit;
  • the uplink component carrier is used for uplink transmission only in accordance with dynamic scheduling in the time unit.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • the beneficial effects of the present invention include:
  • the network side before the terminal transmits the uplink data by using the time unit, if the network is transmitted, the network side also schedules the terminal to use the uplink component carrier to perform the time unit.
  • the SPS uplink transmission, and the number of uplink component carriers that the terminal can use for uplink transmission according to the scheduling of the network side is multiple, and then all or part of the uplink component carriers of the plurality of uplink component carriers that can be used are selected, for the selected Each uplink component carrier uses the uplink component carrier to perform SPS uplink transmission and/or dynamically schedule uplink transmission in the time unit according to scheduling on the network side. It can be seen that the present invention solves the problem of how the terminal transmits data in the time unit according to the scheduling of the network side when the network side schedules for the same time unit in the multi-carrier system includes both SPS and dynamic scheduling, that is, the multi-carrier is solved. A new problem in the system due to the increase in component carriers.
  • the spirit and scope of the Ming Thus, if such modifications and variations of the invention are within the scope of the invention The invention is also intended to cover such modifications and variations within the scope and equivalents thereof.

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Description

多栽波系统中的数据传输方法、 系统和设备 本申请要求在 2010年 02月 11日提交中国专利局、 申请号为 201010111878.4、 发明名称为
"多栽波系统中的数据传输方法、 系统和设备"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
本发明涉及无线通信领域, 尤其涉及一种多栽波系统中的数据传输方法、 系统和设备。 背景技术
长期演进升级( LTE Advanced, LTE-A )系统的峰值速率较长期演进( LTE ) 系统有很大提高, 要求达到下行 lGbps, 上行 500Mbps。 同时, LTE-A系统 要求和 LTE系统很好地兼容。 基于提高峰值速率、 与 LTE系统兼容和充分利 用频率资源的需要, LTE-A系统引入了载波聚合(CarrierAggregation, CA ) 技术。
CA 技术是指在一个小区内上下行各包含多个成员载波 (Component Carrier, CC ),而不是 LTE及之前的无线通信系统中只有一套成员载波的模式。 基站(eNB )对小区内的多套成员载波统一管理和调度。 成员栽波是连续或者 非连续的, 为了和 LTE系统兼容, 每个成员载波的最大带宽为 20MHz。
从终端 (UE ) 角度, 一个终端可以同时在多个下行成员栽波上接收下行
Figure imgf000003_0001
CA机制下 LTE-A系统的下行层 2和上行层 2与 LTE系统的相同之处在 于:
分组数据集中协议(Packet Data Convergence Protocol, PDCP )、 无线链 路控制层(Radio Link Control, RLC ) 的结构与 LTE系统相同; 媒体接入控 制 ( Medium Access Control, MAC )层功能和 LTE系统相同, 主要对终端进 行调度, 包括优先级以及资源分配等。
不同之处在于:
针对每个成员载波都有一个独立的混合自动重传请求( Hybrid Automatic Repeat Request, HARQ ) 实体; 每个成员载波对应一条独立的传输信道; 每 个成员载波独立组织传输块(Transport Block, TB ), 重传不可以交换成员载 波。 收。 动态调度是指每当终端需要收发数据时, 网络侧通过物理下行控制信道 ( Physical Downlink Control Channel, PDCCH ) 向该终端发送动态调度信令, 终端接收到该动态调度信令后, 利用该动态调度信令所指示的资源进行数据 的收发。
为了减少控制信令的开销, LTE 系统针对数据包大小基本相同且到达时 间间隔比较有规律的业务引入了半持续调度( Semi-Persistent Scheduling, SPS ) 且规定一个终端只能配置一套 SPS资源。
半持续调度是指网络侧预先将半持续调度的周期和半持续调度小区无线 网络临时标识(SPS C-RNTI )配置给终端, 并向终端发送半持续调度信令。 终端根据配置的 SPS C-RNTI检测到针对本终端的半持续调度信令后,按照配 置的半持续调度的周期每隔一定时间, 利用半持续调度信令所指示的资源进 行数据的收发。
半持续调度的周期和使用的 SPS C-RNTI由无线资源控制(RRC )实体配 置给终端, 半持续调度信令通过 PDCCH发送给终端。
LTE 系统只有一个成员载波, 若不考虑空间复用, 一个终端在一个子帧 内只能传输一个 TB, 因此如果终端在某个子帧内有 SPS资源分配的同时收到 针对本子帧的动态调度 PDCCH信令,则终端在该子帧只能按照动态调度信令 的指示进行数据传输, 忽略 SPS资源分配。
在实现本发明的过程中, 发明人发现现有技术中存在以下技术问题: 引入 CA机制后,一个终端在一个子帧内可以同时在多个成员载波上进行 数据传输, 每个 CC上都可以承栽至少一个 TB, 这种情况下若网络侧调度该 终端在子帧上进行的上行传输既包括 SPS传输又包括动态调度传输时, 终端 如何根据网络侧的调度在该时间单元内传输数据, 目前还没有具体实现方案。 发明内容
本发明实施例提供一种多栽波系统中的数据传输方法, 用于解决多载波 系统中网络侧针对同一时间单元的调度同时包括 SPS和动态调度时, 终端如 何根据网络侧的调度在该时间单元内传输数据的问题。
一种多载波系统中的数据传输方法, 该方法包括:
终端在通过时间单元传输上行数据前,, 确定网络侧调度本终端使用上行 成员载波在所述时间单元内进行半持续调度 SPS上行传输并同时调度本终端 传输能够使用的上行成员载波的数量为多个;
终端选取能够使用的多个上行成员栽波中的部分或全部上行成员载波, 并通过所选取各个上行成员载波在所述时间单元内进行 SPS上行传输和 /或 动态调度上行传输。
一种终端, 该终端包括:
确定单元, 用于在通过时间单元传输上行数据前, 确定网络侧调度本终 端使用上行成员载波在所述时间单元内进行半持续调度 SPS上行传输并同时 端进行上行传输能够使用的上行成员载波的数量为多个;
传输单元, 用于选取能够使用的多个上行成员载波中的部分或全部上行 成员载波, 并通过选取的各个上行成员载波在所述时间单元内进行 SPS上行 传输和 /或动态调度上行传输。
本发明中, 终端在利用时间单元传输上行数据前, 若确定网络侧调度本 度本终端使用上行成员载波在该时间单元内进行 SPS上行传输、 以及本终端 根据网络侧调度进行上行传输能够使用的上行成员栽波的数量为多个, 则选 取能够使用的多个上行成员栽波中的全部或部分上行成员栽波, 对于选取的 各上行成员载波, 根据网络側的调度使用该上行成员载波在该时间单元内进 行 SPS上行传输和 /或动态调度上行传输。 可见, 本发明解决了多载波系统 中网络侧针对同一时间单元的调度同时包括 SPS和动态调度时, 终端如何才艮 据网络侧的调度在该时间单元内传输数据的问题。 附图说明
图 1为本发明实施例提供的多栽波系统中的数据传输方法的流程示意图; 图 2为本发明实施例提供的多载波系统中的数据传输设备的结构示意图。 具体实施方式
为了解决多栽波系统中终端如何根据网络侧的调度在时间单元内传输数 据的问题, 本发明实施例提供一种多栽波系统中的数据传输方法。 本方法中, 在网络侧针对同一时间单元的调度同时包括 SPS和动态调度时, 终端可以根 据一定的策略选取进行上行传输所使用的上行 CC, 以及在选取的上行 CC上 进行 SPS上行传输和 /或动态调度上行传输。 所述时间单元指的是子帧。
参见图 1, 本发明实施例提供的多载波系统中的数据传输方法, 具体包括 以下步骤:
步骤 10: 终端在利用时间单元传输上行数据前, 确定网络侧调度本终端 使用上行成员栽波在该时间单元内进行 SPS上行传输, 同时确定网络侧调度 网络侧调度本终端进行上行传输能够使用的上行成员载波的数量为多个; 步骤 11 : 终端选取能够使用的多个上行成员栽波中的全部或部分上行成 员载波, 对于选取的各上行成员栽波, 根据网络侧的调度使用该上行成员载 步骤 10中, 终端在接收到网络侧发来的用于指示本终端使用上行成员载 波在时间单元内进行上行传输的动态调度信令后, 确定网络侧调度本终端使 用上行成员载波在时间单元内进行动态调度上行传输; 终端在网络侧为本终 端配置有包含该时间单元的 SPS上行传输资源后, 确定网络侧还调度本终端 使用上行成员栽波在该时间单元内进行 SPS上行传输。 其具体实现有如下两 种方法:
第一种: 终端在接收到网络侧发来的用于指示本终端使用上行成员载波 在所述时间单元内进行上行传输的动态调度信令后, 判断网络侧为本终端配 置的 SPS上行传输资源是否包含该时间单元, 若是, 则确定网络侧调度本终 端使用上行成员载波在该时间单元内进行 SPS上行传输, 并且确定网络侧调 第二种, 终端在接收到网络側为本终端配置的包含所述时间单元的 SPS 上行传输资源的信息后, 分别判断在 SPS资源分配生效的各个时间单元内内 是否接收到网络侧发来的针对该时间单元并且用于指示本终端使用上行成员 载波在该时间单元内进行上行传输的动态调度信令, 若是, 则确定网络侧调 定网络侧调度本终端使用上行成员载波在该时间单元内进行 SPS上行传输。
当然, 终端还可以在利用时间单元传输上行数据之前的任何其他时间执 行上述步骤 10。
步骤 10中, 终端根据网络侧的调度确定本终端进行上行传输能够使用的 上行成员载波的数量的方法为:
在利用时间单元传输上行数据前, 确定接收到的各条用于指示本终端使 成员栽波, 以及在利用时间单元传输上行数据前, 确定网络侧为本终端配置 合集中包含的上行载波个数极为网络侧调度本终端进行上行传输能够使用的 上行成员栽波的数量。
步骤 11中, 终端使用上行成员载波在时间单元内进行 SPS上行传输, 是 11 070806 指终端按照配置的 SPS上行传输资源, 周期性地使用上行成员载波在时间单 元内、 根据终端当前待传输的上行数据的优先级进行上行数据的传输。 终端 使用上行成员栽波在时间单元内进行动态调度上行传输, 是指终端根据接收 到的动态调度信令的指示, 通过上行成员栽波在时间单元内进行上行数据的 传输。 该步骤的具体实现可以采用多种方法, 下面举例进行说明:
例 1 :
终端选取能够使用的多个上行成员栽波中的全部上行成员栽波; 对于选 取的各上行成员栽波, 若网络侧调度本终端使用该上行成员栽波在时间单元 内同时进行动态调度上行传输和 SPS上行传输, 则使用该上行成员载波在该 时间单元内仅按照动态调度进行上行传输, 而不进行 SPS上行传输; 若网络
而不进行 SPS上行传输; 若网络侧调度本终端使用该上行成员载波在该时间 单元内仅进行 SPS上行传输, 则使用该上行成员载波在该时间单元内仅进行 SPS上行传输, 而不进行动态调度上行传输。 本例中一个 CC上的动态调度不 可以取代其它 CC上的 SPS调度,只有同一个 CC上的动态调度才可以取代该 CC上的 SPS传输。
例 2:
终端选取能够使用的多个上行成员栽波中的全部上行成员载波; 对于选 取的各上行成员栽波, 若网络侧调度本终端使用该上行成员载波在时间单元 内同时进行动态调度上行传输和 SPS上行传输, 则使用该上行成员载波在该 时间单元内仅进行 SPS上行传输, 而不进行动态调度上行传输; 若网络侧调 使用该上行成员载波在该时间单元内仅按照动态调度进行上行传输, 而不进 行 SPS上行传输; 若网络側调度本终端使用该上行成员载波在该时间单元内 仅进行 SPS上行传输, 则使用该上行成员载波在该时间单元内仅进行 SPS上 行传输, 而不进行动态调度上行传输。 本例中, 一个 CC上的动态调度不能取 代同一个 CC上的 SPS传输。
例 3:
终端从能够使用的多个上行成员栽波中选取满足以下条件的上行成员载 选取的各上行成员栽波, 终端使用该上行成员栽波在该时间单元内仅按照动 态调度进行上行传输, 而不进行 SPS上行传输。 本例中一个 CC上的动态调 度可以取代其它 CC的 SPS调度。
例 4:
终端从能够使用的多个上行成员栽波中选取满足以下条件的上行成员载 波: 网络侧调度本终端使用该行成员载波在时间单元内进行 SPS上行传输。 对于选取的各上行成员栽波, 终端使用该上行成员载波在该时间单元内仅进 行 SPS上行传输, 而不进行动态调度上行传输。
本发明中的时间单元可以为子帧。
下面对本发明进行具体说明:
本发明给出了一种多栽波系统中针对同一个终端如果在同一个子帧内同 时出现动态调度和 SPS调度的情况下处理两者之间关系的方法。 该方法具体 如下:
如果同一个 CC上同时有 SPS资源分配和动态调度的资源分配, 则只按 照动态调度的资源分配进行数据传输, 忽略 SPS资源分配。 如果不同 CC上 同时有 SPS 资源分配和动态调度的资源分配, 则终端在只有动态调度的 CC 上按照动态调度进行数据传输, 在只有 SPS资源分配的 CC上按照 SPS进行 数据传输。
设多载波系统中为终端配置了三个上行成员载波, 载波编号分别为 CC1、 CC2、 CC3 , 实施例如下:
实施例一:
本实施例中, 基站为终端在 CC1上配置了包含子帧 I的 SPS上行传输资 源, 终端通过解析 PDCCH获得调度本终端使用载波 CC1在子帧 I上传输数 据的动态调度信令, 则依据上述提供的关于在同一个子帧内同时出现动态调 度和 SPS调度的情况下处理两者之间关系的方法进行处理, 终端在子帧 I应 该按照动态调度信令的指示进行数据传输, 具体如下:
步骤 S01 : 基站将针对 CC1的半持续调度的周期 T和 SPS C-R TI配置 给终端;
步骤 S02:基站向终端发送包含 SPS C-RNTI的 PDCCH,分配 CC1上 SPS 传输使用的物理资源, 终端将保存该 PDCCH发送时刻以及 SPS指示的 SPS 资源等信息;
步骤 S03: 基站向终端发送指示终端在 CC1上利用子帧 I进行上行传输 的动态调度信令, 终端根据之前存储的 SPS相关信息, 判断子帧 I在 CC1上 存在 SPS传输。
步骤 S04: 终端接收动态调度信令后,依据上述提供的关于在同一个子帧 内同时出现动态调度和 SPS调度的情况下处理两者之间关系的方法, 按照动 态调度信令的指示在 CC1上利用子帧 I进行上行传输。
实施例二:
本实施例中, 基站为终端在 CC1上配置了包含子帧 I的 SPS上行传输资 源, 终端通过解析 PDCCH获得调度本终端使用载波 CC2在子帧 I上传输数 据的动态调度信令, 则依据上述提供的关于在同一个子帧内同时出现动态调 度和 SPS调度的情况下处理两者之间关系的方法进行处理, 终端可以按照配 置的 SPS上行传输资源在 CC1上利用子帧 I进行数据传输, 按照动态调度信 令的指示在 CC2上利用子帧 I进行数据传输, 具体如下:
步骤 S21 : 基站将针对 CC1的半持续调度的周期 T和 SPS C-RNTI配置 给终端;
步骤 S22:基站向终端发送包含 SPS C-RNTI的 PDCCH,分配 CC1上 SPS 传输使用的物理资源, 终端保存该 PDCCH发送时刻以及 PDCCH指示的 SPS 资源等信息;
步骤 S23: 基站向终端发送指示终端在 CC2上利用子帧 I进行上行传输 的动态调度信令, 终端才艮据步骤 S22中存储的 SPS相关信息, 判断子帧 I在 CC1上存在 SPS传输。
步骤 S24: 终端接收动态调度信令后,依据上述提供的关于在同一个子帧 内同时出现动态调度和 SPS调度的情况下处理两者之间关系的方法, 按照配 置的 SPS上行传输资源在 CC1上利用子帧 I进行数据传输, 并按照动态调度 信令的指示在 CC2上利用子帧 I进行上行传输。
实施例三:
本实施例中,基站为终端在 CC1和 CC3上配置了包含子帧 I的 SPS上行 传输资源, 终端通过解析 PDCCH获得调度本终端使用载波 CC2在子帧 I上 传输数据的动态调度信令, 则依据上述提供的关于在同一个子帧内同时出现 动态调度和 SPS调度的情况下处理两者之间关系的方法进行处理, 终端可以 按照配置的 SPS上行传输资源在 CC1和 CC3上利用子帧 I进行数据传输,按 照动态调度信令的指示在 CC2上利用子帧 I进行数据传输, 具体如下:
步骤 S31 :基站将针对 CC1和 CC3 的半持续调度的周期 T和 SPS C- NTI 配置给终端;
步骤 S32: 基站向终端分别发送针对 CC1 和 CC3 上 SPS传输的 SPS C-RNTI的 PDCCH, 分配 CC1和 CC3上 SPS传输使用的物理资源, 终端将 保存这些 PDCCH发送时刻以及 PDCCH分配的 SPS资源等信息;
步骤 S33: 基站向终端发送指示终端在 CC2上利用子帧 I进行上行传输 的动态调度信令, 终端根据之前存储的 SPS相关信息, 判断子帧 I在 CC1和 CC3上存在 SPS传输。
步骤 S34: 终端接收动态调度信令后,则依据上述提供的关于在同一个子 帧内同时出现动态调度和 SPS调度的情况下处理两者之间关系的方法, 按照 配置的 SPS上行传输资源在 CC1和 CC3上利用子帧 I进行数据传输,并按照 动态调度信令的指示在 CC2上利用子帧 I进行上行传输。
基于同一发明构思, 本发明实施例中还提供了一种终端, 由于该终端解 决问题的原理与多载波系统中的数据传输的方法相似, 因此该终端的实施可 以参见方法的实施, 重复之处不再赘述。
参见图 2, 本发明实施例还提供一种终端, 该终端包括:
确定单元 20, 用于在利用时间单元传输上行数据前, 确定网络侧调度本
输, 并且, 根据网络侧调度本终端进行上行传输能够使用的上行成员载波的 数量为多个;
传输单元 21, 用于选取能够使用的多个上行成员载波中的全部或部分上 行成员载波, 对于选取的各上行成员栽波, 根据网络側的调度使用该上行成
. ' J
所述确定单元 20用于:
在判断网络侧为本终端配置的 SPS上行传输资源包含所述时间单元时, 输;
若接收到网络侧发来的用于指示本终端使用上行成员载波在所述时间单 元内进行上行传输的动态调度信令, 则确定网络侧调度本终端使用上行成员 载波在所述时间单元内进行动态调度上行传输。
具体的, 在接收到网络侧发来的用于指示本终端使用上行成员载波在所 述时间单元内进行上行传输的动态调度信令后, 判断网络侧为本终端配置的 SPS 上行传输资源是否包含所述时间单元, 若是, 则确定网络侧调度本终端
在接收到网络侧为本终端配置的包含所述时间单元的 SPS上行传输资源 的信息后, 判断在设定时间段内是否接收到网络侧发来的用于指示本终端使
行传输, 并且网络侧还调度本终端使用上行成员载波在所述时间单元内进行 SPS上行传输。
所述传输单元 21用于:
选取能够使用的多个上行成员栽波中的全部上行成员载波;
对于选取的各上行成员栽波, 若网络侧调度本终端使用该上行成员载波 在所述时间单元内进行动态调度上行传输和 SPS上行传输, 则使用该上行成 员载波在所述时间单元内仅按照动态调度进行上行传输; 若网络侧调度本终 端使用该上行成员栽波在所述时间单元内仅进行动态调度上行传输, 则使用 该上行成员载波在所述时间单元内仅按照动态调度进行上行传输; 若网络侧 调度本终端使用该上行成员载波在所述时间单元内仅进行 SPS上行传输, 则 使用该上行成员载波在所述时间单元内仅进行 SPS上行传输。
所述传输单元 21用于:
从能够使用的多个上行成员载波中选取满足以下条件的上行成员载波: 网络侧调度本终端使用该行成员载波在所述时间单元内进行动态调度上行传 输;
对于选取的各上行成员栽波, 使用该上行成员载波在所述时间单元内仅 按照动态调度进行上行传输。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或 计算机程序产品。 因此, 本发明可采用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实施例的形式。 而且, 本发明可采用在一个或多个 其中包含有计算机可用程序代码的计算机可用存储介质 (包括但不限于磁盘 存储器、 CD-ROM、 光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产 品的流程图和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图 和 /或方框图中的每一流程和 /或方框、 以及流程图和 /或方框图中的流程 和 /或方框的结合。 可提供这些计算机程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器, 使得通 过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流 程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设 备以特定方式工作的计算机可读存储器中, 使得存储在该计算机可读存储器 中的指令产生包括指令装置的制造品, 该指令装置实现在流程图一个流程或 多个流程和 /或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的 处理, 从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图 一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的步 骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了 基本创造性概念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权 利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
综上, 本发明的有益效果包括:
本发明实施例提供的方案中, 终端在利用时间单元传输上行数据前, 若 传输、 与此同时网络侧还调度本终端使用上行成员载波在该时间单元内进行
SPS 上行传输、 并且本终端根据网络侧的调度进行上行传输能够使用的上行 成员载波的数量为多个, 则选取能够使用的多个上行成员载波中的全部或部 分上行成员栽波, 对于选取的各上行成员载波, 根据网络侧的调度使用该上 行成员载波在该时间单元内进行 SPS上行传输和 /或动态调度上行传输。 可 见,本发明解决了多载波系统中网络側针对同一时间单元的调度同时包括 SPS 和动态调度时, 终端如何根据网络侧的调度在该时间单元内传输数据的问题, 也即解决了在多载波系统中由于成员载波的增加带来的新问题。 明的精神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权利要求 及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种多载波系统中的数据传输方法, 其特征在于, 该方法包括: 终端在通过时间单元传输上行数据前, 确定网络侧调度本终端使用上行 成员栽波在所述时间单元内进行半持续调度 SPS上行传输并同时确定网络侧
-, 且 终端进行上行传输能够使用的上行成员栽波的数量为多个; 并通过所选取各个上行成员栽波在所述时间单元内进行 SPS上行传输和 /或 动态调度上行传输。
2、 如权利要求 1所述的方法, 其特征在于, 所述网络侧调度本终端进行 传输使用的上行成员栽波是同一个上行成员载波或不同的上行成员载波。
3、 如权利要求 1所述的方法, 其特征在于, 确定网络侧调度本终端进行 SPS上行传输包括:
终端在网络侧为本终端配置的 SPS上行传输资源包含所述时间单元时, 确定网络侧调度本终端使用上行成员载波在所述时间单元内进行 SPS上行传 输;
确定网络侧调度本终端进行动态调度上行传输包括:
终端在接收到网络侧发来的用于指示本终端使用上行成员载波在所述时 间单元内进行上行传输的动态调度信令后, 确定网络侧调度本终端使用上行 成员载波在所述时间单元内进行动态调度上行传输。
4、 如权利要求 1或 2或 3所述的方法, 其特征在于, 所述终端选择上行 成员载波包括:
所述终端从能够使用的多个上行成员载波中选取网络侧调度本终端在所 所述终端在所选取的各个上行成员载波上进行 SPS上行传输和 /或动态 调度上行传输包括:
在所选取的各个上行成员栽波中上在所述时间单元内按照动态调度或
SPS进行上行传输。
5、 如权利要求 1或 2或 3所迷的方法, 其特征在于, 所述终端通过所选 如果所述终端在所选取的某个上行成员载波上在所述时间单元内同时有 动态调度上行传输和 SPS上行传输, 则所述终端使用所述上行成员栽波在所 述时间单元内仅按照动态调度进行上行传输;
Figure imgf000017_0001
照动态调度进行上行传输
SPS
Figure imgf000017_0002
SPS上行传输。
6、 如权利要求 1或 2或 3所述的方法, 其特征在于, 所述时间单元为子 帧。
7、 一种多栽波系统中的数据传输设备, 其特征在于, 该终端包括: 确定单元, 用于在通过时间单元传输上行数据前, 确定网络侧调度本终 端使用上行成员载波在所述时间单元内进行半持续调度 SPS上行传输并同时 行传输且终端进行上行传输能够使用的上行成员载波的数量为多个;
传输单元, 用于选取能够使用的多个上行成员栽波中的部分或全部上行 成员栽波, 并通过选取的各个上行成员载波在所述时间单元内进行 SPS上行 传输和 /或动态调度上行传输。
8、 如权利要求 7所述的设备, 其特征在于, 所述确定单元用于: 在网络侧为本终端配置的 SPS上行传输资源包含所述时间单元时, 确定 网络侧调度本终端使用上行成员载波在所述时间单元内进行 SPS上行传输; 在接收到网络侧发来的用于指示本终端使用上行成员载波在所述时间单元内 进行上行传输的动态调度信令后, 确定网络侧调度本终端使用上行成员载波 在所述时间单元内进行动态调度上行传输。
9、 如权利要求 7或 8所述的设备, 其特征在于, 所述传输单元用于:
Figure imgf000018_0001
各个上行成员载波中上在所述时间单元内按照动态调度或 SPS 进行上行传 输。
10、 如权利要求 7或 8所述的设备, 其特征在于, 所述传输单元用于:
^口禾尸 杜尸/ Γι¾取的 *^1、工4丁凤贝孰¾
动态调度上行传输和 SPS上行传输, 则所述终端使用所述上行成员载波在所 述时间单元内仅按照动态调度进行上行传输; 如果所述终端在所选取的某个 上行成员载波上在所述时间单元内仅有动态调度上行传输, 则所述终端使用 所述上行成员栽波在所述时间单元内仅按照动态调度进行上行传输; 如果所 述终端在所选择区的某个上行成员载波上在所述时间单元内仅有 SPS上行传 输, 则所述终端使用所述上行成员载波在所述时间单元内仅进行 SPS上行传 输。
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