WO2021204148A1

WO2021204148A1 - Data transmission method and user equipment

Info

Publication number: WO2021204148A1
Application number: PCT/CN2021/085802
Authority: WO
Inventors: 常宁娟; 刘仁茂
Original assignee: 夏普株式会社; 常宁娟
Priority date: 2020-04-10
Filing date: 2021-04-07
Publication date: 2021-10-14
Also published as: CN113518453A

Abstract

Provided are a data transmission method and a user equipment. The data transmission method comprises: a user equipment (UE) receiving a radio resource control (RRC) message, which is from a base station and contains a small data transmission configuration grant (SDT CG) configuration; and the UE initiating data sending based on an SDT CG mode.

Description

数据传输方法以及用户设备Data transmission method and user equipment

技术领域Technical field

本公开涉及无线通信技术领域，更具体地，本公开涉及非活动状态时的小尺寸数据传输方法以及对应的用户设备。The present disclosure relates to the field of wireless communication technology. More specifically, the present disclosure relates to a small-size data transmission method in an inactive state and a corresponding user equipment.

背景技术Background technique

第三代合作伙伴计划(3rd Generation Partnership Project：3GPP)RAN#86次全会上批准了一个版本17的新研究项目(参见非专利文献：RP-193252：Work Item on NR smalldata transmissions in INACTIVE state)，简称小数据传输项目。该研究项目的目的是针对用户不频繁发送的小数据业务而带来的信令开销和功率消耗进行优化。对于处于无线资源控制非激活态(Radio Resource Control_Inactive，RRC_Inactive)的用户设备(User Equipment，UE)，一些不频繁的小数据业务(如即时信息、保持在线的心跳信号、智能穿戴设备或传感器的周期信息以及智能计量设备带来的周期读表业务等)传输使得UE需要进入无线资源控制连接态RRC_connected状态来执行小尺寸数据包的发送，由此而来的信令开销带来了网络性能的降低，同时也极大地消耗了UE的能耗。在上述新的研究项目中，主要采用通过在随机接入过程中携带小数据(如伴随或包含在四步随机接入过程的消息3中携带小数据或伴随或包含在两步随机接入过程中的消息A中携带小数据)以及在RRC_inactive状态下使用预配置的上行资源来发送小数据而无需进入RRC_connected态获取上行发送资源的手段来达到目的，降低信令开销和UE能耗。The 3rd Generation Partnership Project (3rd Generation Partnership Project: 3GPP) RAN#86 approved a new research project of version 17 at the plenary meeting (see non-patent literature: RP-193252: Work Item on NR small data transmissions in INACTIVE state), Referred to as small data transfer project. The purpose of this research project is to optimize the signaling overhead and power consumption caused by the small data services sent by users infrequently. For user equipment (User Equipment, UE) in the Radio Resource Control Inactive state (Radio Resource Control_Inactive, RRC_Inactive), some infrequent small data services (such as instant information, heartbeat signals that stay online, smart wearable devices or sensor cycles) Information and periodic meter reading services brought by smart metering equipment, etc.) The transmission makes the UE need to enter the RRC_connected state to perform the transmission of small-size data packets, and the resulting signaling overhead reduces network performance. , It also greatly consumes the energy consumption of the UE. In the above-mentioned new research projects, it is mainly used to carry small data in the random access process (such as accompanying or included in the message 3 of the four-step random access process to carry small data or accompanying or included in the two-step random access process. The small data is carried in the message A in the RRC_inactive state, and the pre-configured uplink resources are used to send small data in the RRC_inactive state without entering the RRC_connected state to obtain uplink transmission resources to achieve the goal and reduce signaling overhead and UE energy consumption.

在版本15及以后的NR***中，支持通过将一个大带宽的宽带载波划分为多个带宽部分(BandWidth Part，BWP)的机制来提供对UE的频带大小适应性调整。UE在RRC_connected状态下可以被配置一个或多个BWP，这些BWP在基于网络侧的控制下，可以处于激活状态或去激活状态，连接状态下的UE在处于激活状态下的BWP上进行传输传输。本公开针对UE在RRC_Inactive状态下如何管理和维护预配置的上行数据传输资源如BWP以及如何配置预配置上行数据资源的问题提出解决方法。In Release 15 and later NR systems, a mechanism of dividing a large-bandwidth broadband carrier into multiple bandwidth parts (Band Width Part, BWP) is supported to provide adaptive adjustment of the frequency band size of the UE. The UE can be configured with one or more BWPs in the RRC_connected state. These BWPs can be activated or deactivated under the control of the network side. The UE in the connected state transmits on the activated BWP. The present disclosure proposes solutions to the problems of how the UE manages and maintains the pre-configured uplink data transmission resources such as BWP and how to configure the pre-configured uplink data resources in the RRC_Inactive state.

发明内容Summary of the invention

本公开实施例的目的在于针对UE在RRC_Inactive状态下如何维护带宽部分的激活去激活的状态问题以及如何配置预配置上行数据资源等问题提出解决方法。具体地，本公开实施例提供了在用户设备或者用户设备的MAC实体中执行的数据传输方法以及相应的用户设备。The purpose of the embodiments of the present disclosure is to propose solutions to the problems of how the UE maintains the activated and deactivated state of the bandwidth part in the RRC_Inactive state and how to configure the pre-configured uplink data resources. Specifically, the embodiments of the present disclosure provide a data transmission method executed in a user equipment or a MAC entity of the user equipment and corresponding user equipment.

根据本公开的第一方面，提出了一种数据传输方法，包括：用户设备UE接收来自基站的包含小数据传输配置许可SDT CG配置的无线资源控制RRC消息；和所述UE发起基于SDT CG方式的数据发送。According to the first aspect of the present disclosure, a data transmission method is proposed, including: a user equipment UE receives a radio resource control RRC message containing a small data transmission configuration permission SDT CG configuration from a base station; and the UE initiates an SDT CG-based method The data is sent.

在上述第一方面的数据传输方法中，还可以包括：变更当前所使用的带宽部分BWP为所述SDT CG配置所关联的BWP。In the above-mentioned data transmission method of the first aspect, it may further include: changing the currently used bandwidth part BWP to the BWP associated with the SDT CG configuration.

在上述第一方面的数据传输方法中，还可以包括：在所述UE结束使用SDT CG资源的上行发送的情况下，变更当前使用的BWP为初始BWP。In the above-mentioned data transmission method of the first aspect, it may further include: changing the currently used BWP to the initial BWP when the UE ends uplink transmission using the SDT CG resource.

在上述第一方面的数据传输方法中，可以在所述UE判断当前所使用的BWP不是所述SDT CG配置所关联的BWP时，变更当前所使用的带宽部分BWP为所述SDT CG配置所关联的BWP。In the data transmission method of the first aspect described above, when the UE determines that the currently used BWP is not the BWP associated with the SDTCG configuration, the currently used bandwidth part BWP may be changed to be associated with the SDTCG configuration BWP.

在上述第一方面的数据传输方法中，当前所使用的所述BWP可以是上行BWP和/或下行BWP。In the above-mentioned data transmission method of the first aspect, the currently used BWP may be an uplink BWP and/or a downlink BWP.

在上述第一方面的数据传输方法中，所述UE结束使用SDT CG资源的上行发送可以是指所述UE收到所述上行发送的下行响应或所述UE未收到所述上行发送的下行响应或SDT关联的上行时间对齐无效而导致的所述上行发送失败。In the above-mentioned data transmission method of the first aspect, the UE ending the uplink transmission using SDT CG resources may mean that the UE receives the downlink response of the uplink transmission or the UE does not receive the downlink response of the uplink transmission. The uplink transmission fails due to an invalid response or uplink time alignment associated with the SDT.

在上述第一方面的数据传输方法中，所述SDT CG配置包含在所关联的BWP配置中。In the above-mentioned data transmission method of the first aspect, the SDT CG configuration is included in the associated BWP configuration.

在上述第一方面的数据传输方法中，所述SDT CG中可以包含BWP标识，所述BWP标识用于指示SDT CG资源所对应的带宽部分BWP。In the data transmission method of the foregoing first aspect, the SDTCG may include a BWP identifier, and the BWP identifier is used to indicate the bandwidth part BWP corresponding to the SDTCG resource.

在上述第一方面的数据传输方法中，也可以所述RRC消息为RRC释放消息，在所述UE接收到包含所述SDT CG配置的无线资源控制RRC消息的情况下，所述UE进入无线资源控制非活动RRC_INACTIVE状态，在所述UE发起基于SDT CG方式的数据发送之前，处于所述RRC_INACTIVE状态的UE工作在初始BWP上。In the data transmission method of the first aspect described above, the RRC message may also be an RRC release message, and when the UE receives a radio resource control RRC message including the SDTCG configuration, the UE enters the radio resource The inactive RRC_INACTIVE state is controlled. Before the UE initiates data transmission based on the SDT CG mode, the UE in the RRC_INACTIVE state works on the initial BWP.

根据本公开的第二方面，提供一种用户设备，包括：处理器；以及存储器，存储有指令；其中，所述指令在由所述处理器运行时执行根据上下文所述的数据传输方法。According to a second aspect of the present disclosure, there is provided a user equipment including: a processor; and a memory storing instructions; wherein the instructions execute the data transmission method according to the context when run by the processor.

附图说明Description of the drawings

为了更完整地理解本公开及其优势，现在将参考结合附图的以下描述，其中：For a more complete understanding of the present disclosure and its advantages, reference will now be made to the following description in conjunction with the accompanying drawings, in which:

图1表示实施例1中的作为一例的数据传输方法的处理流程。FIG. 1 shows the processing flow of the data transmission method in the first embodiment as an example.

图2表示实施例1中的作为另一例的数据传输方法的处理流程。FIG. 2 shows the processing flow of the data transmission method as another example in the first embodiment.

图3表示实施例2中的作为一例的数据传输方法的处理流程。FIG. 3 shows the processing flow of the data transmission method as an example in the second embodiment.

图4是表示本发明所涉及的用户设备UE的框图。Fig. 4 is a block diagram showing a user equipment UE related to the present invention.

在附图中，相同或相似的结构均以相同或相似的附图标记进行标识。In the drawings, the same or similar structures are marked with the same or similar reference numerals.

具体实施方式Detailed ways

根据结合附图对本公开示例性实施例的以下详细描述，本公开的其它方面、优势和突出特征对于本领域技术人员将变得显而易见。According to the following detailed description of the exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, other aspects, advantages, and prominent features of the present disclosure will become apparent to those skilled in the art.

在本公开中，术语“包括”和“含有”及其派生词意为包括而非限制；术语“或”是包含性的，意为和/或。In the present disclosure, the terms "including" and "containing" and their derivatives mean including but not limiting; the term "or" is inclusive, meaning and/or.

在本说明书中，下述用于描述本公开原理的各种实施例只是说明，不应该以任何方式解释为限制公开的范围。参照附图的下述描述用于帮助全面理解由权利要求及其等同物限定的本公开的示例性实施例。下述描述包括多种具体细节来帮助理解，但这些细节应认为仅仅是示例性的。因此，本领域普通技术人员应认识到，在不背离本公开的范围和精神的情况下，可以对本文中描述的实施例进行多种改变和修改。此外，为了清楚和简洁起见，省略了公知功能和结构的描述。此外，贯穿附图，相同参考数字用于相似功能和操作。In this specification, the following various embodiments for describing the principle of the present disclosure are merely illustrative, and should not be construed as limiting the scope of the disclosure in any way. The following description with reference to the accompanying drawings is used to help a comprehensive understanding of exemplary embodiments of the present disclosure defined by the claims and their equivalents. The following description includes a variety of specific details to help understanding, but these details should be considered only exemplary. Therefore, those of ordinary skill in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. In addition, for clarity and brevity, descriptions of well-known functions and structures are omitted. In addition, throughout the drawings, the same reference numerals are used for similar functions and operations.

下文以LTE移动通信***及其后续的演进版本作为示例应用环境，具体描述了根据本公开的多个实施方式。然而，需要指出的是，本公开不限于以下实施方式，而是可适用于更多其它的无线通信***。Hereinafter, taking the LTE mobile communication system and its subsequent evolved versions as an example application environment, multiple embodiments according to the present disclosure are described in detail. However, it should be pointed out that the present disclosure is not limited to the following embodiments, but is applicable to more other wireless communication systems.

下面先对本公开涉及到的一些概念进行说明。值得注意的是，在下文的描述中的一些命名仅是实例说明性的，而不是限制性的，也可以作其他命名。The following first describes some concepts involved in the present disclosure. It is worth noting that some of the naming in the following description is merely illustrative and not restrictive, and other naming may also be used.

主小区(Primary Cell，PCell)：指工作在主频率上的小区。其是UE执行初始连接建立或发起连接重建立流程所在的小区，或切换命令中所指示的主小区。本公开实施例中，主小区还可指主辅小区(Primary Secondary Cell，PSCell)，即UE被指示在其上执行随机接入或当辅小区组变更时若随机接入流程被忽略时的初始PUSCH传输所在的辅小区组小区。对于主辅小区，基站通过RRC信令告知UE其主辅小区标识、频率以及其他主辅小区配置信息。PCell和PSCell通常统一称为特殊小区(special Cell，spCell)。Primary Cell (Primary Cell, PCell): refers to a cell that works on a primary frequency. It is the cell where the UE performs the initial connection establishment or initiates the connection re-establishment procedure, or the primary cell indicated in the handover command. In the embodiments of the present disclosure, the primary cell may also refer to the primary secondary cell (PSCell), that is, the initial stage when the UE is instructed to perform random access on it or if the random access procedure is ignored when the secondary cell group is changed. The secondary cell group cell where PUSCH transmission is located. For the primary and secondary cells, the base station informs the UE of its primary and secondary cell identification, frequency, and other primary and secondary cell configuration information through RRC signaling. PCell and PSCell are generally collectively referred to as special cells (special cells, spCells).

辅小区(Secondary Cell，SCell)：用于提供额外无线资源的小区。其在无线资源控制(Radio Resource Control，简称RRC)连接建立之后配置给UE。Secondary Cell (Secondary Cell, SCell): A cell used to provide additional radio resources. It is configured to the UE after a radio resource control (Radio Resource Control, RRC for short) connection is established.

服务小区：在非载波聚合或非双连接场景下指主小区，在载波聚合或双连接场景下指为UE服务的所有小区。Serving cell: refers to the primary cell in non-carrier aggregation or non-dual connectivity scenarios, and refers to all cells serving the UE in the carrier aggregation or dual connectivity scenarios.

RRC状态：NR***中共定义了三种RRC状态：RRC空闲状态RRC_IDLE、RRC不活动状态RRC_INACTIVE和RRC连接状态RRC_CONNECTED。RRC_IDLE指UE没有建立RRC连接时的状态， RRC_INACTIVE指UE已建立RRC连接但RRC连接被挂起/中止时的状态，RRC_CONNECTED指UE已建立RRC连接且RRC连接未被挂起的状态。在RRC_INACTIVE状态，UE保存了UE非激活接入层上下文(UE Inactive AS context)，监听基于无线接入网的寻呼或基于核心网的寻呼，监听以寻呼无线网络临时标识(Paging-Radio Network Temparary Identifier，P-RNTI)寻址通过下行控制信息(Downlink Control Information，DCI)发送的用于通知寻呼和***信息更新的短消息(short messages)、通过广播获取***信息、执行周期性的基于无线接入网的通知区域(Radio access network-based Notification Area，RNA)更新或在移动出一个配置的RNA时执行RNA更新。目前，RRC_INACTIVE的UE无法实现和网络侧的单播数据通信，其通过发送RRC恢复请求消息执行RRC恢复过程(RRC resume procedure)来恢复和网络侧的RRC连接。RRC state: There are three RRC states defined in the NR system: RRC idle state RRC_IDLE, RRC inactive state RRC_INACTIVE and RRC connected state RRC_CONNECTED. RRC_IDLE refers to the state when the UE has not established an RRC connection, RRC_INACTIVE refers to the state when the UE has established an RRC connection but the RRC connection is suspended/suspended, and RRC_CONNECTED refers to the state in which the UE has established an RRC connection and the RRC connection is not suspended. In the RRC_INACTIVE state, the UE saves the UE Inactive AS context, monitors paging based on the radio access network or paging based on the core network, and monitors to page the radio network temporary identifier (Paging-Radio Network Temparary Identifier (P-RNTI) addresses short messages (short messages) sent through Downlink Control Information (DCI) for notification of paging and system information updates, obtains system information through broadcast, and performs periodic Update based on the radio access network-based Notification Area (RNA) or perform RNA update when a configured RNA is moved out. Currently, the RRC_INACTIVE UE cannot achieve unicast data communication with the network side, and it restores the RRC connection with the network side by sending an RRC recovery request message to perform an RRC recovery procedure (RRC resume procedure).

带宽部分(Bandwidth Part)：NR***中，可以在高达100M甚至GHz量级的宽带宽上操作。一个宽带(Wideband)载波在频域上可划分为多个部分，这些部分称为带宽部分BWP。所述BWP也称为载波带宽部分(carrier bandwidth part)，它包含一组连续的物理资源块PRB集合，这些PRB选自一个宽带载波上的具有某个载波属性(即OFDM numerology，其是由子载波间隔和CP类型/长度所定义的一个载波属性，具体可参考3GPP协议规范38211的4.2节)的载波资源块的连续子集中。BWP的划分，可以适应支持不同带宽范围的UE，同时可以减小UE在宽带载波上传输的能耗等。不同的BWP可以重叠也可以不重叠。不同的BWP可以采用不同的参数值(numerologies)，如子载波间隔、TTI长度、带宽、循环前缀(cyclicPrefix)等可以不同。Bandwidth Part: In the NR system, it can operate on a wide bandwidth of the order of 100M or even GHz. A wideband carrier can be divided into multiple parts in the frequency domain, and these parts are called the bandwidth part BWP. The BWP is also called the carrier bandwidth part, which includes a set of continuous physical resource block PRBs. These PRBs are selected from a broadband carrier with a certain carrier attribute (ie OFDM number), which is determined by the sub-carrier For a carrier attribute defined by the interval and CP type/length, please refer to the continuous subset of the carrier resource block in section 4.2 of the 3GPP protocol specification 38211). The division of BWP can be adapted to support UEs with different bandwidth ranges, and at the same time can reduce the energy consumption of UEs transmitting on broadband carriers. Different BWPs may or may not overlap. Different BWPs can adopt different numerologies, such as sub-carrier spacing, TTI length, bandwidth, cyclic prefix (cyclic Prefix), etc. can be different.

在本公开中，如未特别指出，那么BWP指上行BWP或下行BWP。In this disclosure, unless otherwise specified, BWP refers to an uplink BWP or a downlink BWP.

初始BWP：初始BWP指的是初始下行BWP和/或初始上行BWP，对于PCell，指用于初始接入的BWP；对于SCell，指在SCell激活后所使用的第一个激活的BWP(通过信息元素firstActiveDownlinkBWP-Id和/或firstActiveUplinkBWP-Id来指示)，通过RRC配置给UE。对于RRC空闲态或RRC非活动态的UE，一般认为其在初始BWP上驻留。可以理解为，初始BWP是，对一个UE而言，在显式配置或重配置BWP之前可用的BWP，所述显式配置或重配置BWP可以发生在RRC连接建立过程中或之后，每个BWP都会被配置一个BWP标识，初始BWP对应的BWP标识是0。对一个给定频带，初始BWP常常被限定在UE最小带宽内。初始BWP一般用于初始接入过程，但在初始接入完成之后也可以继续使用初始BWP的。在***信息或其他专用RRC消息中，初始BWP一般通过initialUplinkBWP和/或initialDownlinkBWP信息元素来配置。Initial BWP: Initial BWP refers to the initial downlink BWP and/or initial uplink BWP. For PCell, it refers to the BWP used for initial access; for SCell, it refers to the first activated BWP used after the SCell is activated (by information Element firstActiveDownlinkBWP-Id and/or firstActiveUplinkBWP-Id to indicate), configured to UE through RRC. For a UE in an RRC idle state or an RRC inactive state, it is generally considered that it camps on the initial BWP. It can be understood that the initial BWP is, for a UE, the BWP that is available before the BWP is explicitly configured or reconfigured. The explicit configuration or reconfiguration of the BWP can occur during or after the establishment of the RRC connection. Each BWP Both will be configured with a BWP ID, and the BWP ID corresponding to the initial BWP is 0. For a given frequency band, the initial BWP is often limited to the minimum bandwidth of the UE. The initial BWP is generally used in the initial access process, but the initial BWP can also continue to be used after the initial access is completed. In system information or other dedicated RRC messages, the initial BWP is generally configured through initialUplinkBWP and/or initialDownlinkBWP information elements.

对主小区而言，其初始BWP的配置包含在***信息中。For the primary cell, its initial BWP configuration is included in the system information.

UE还可以被配置一个默认BWP。包括默认上行BWP和/或默认下行BWP。当UE使用初始BWP接入网络后，对UE的一个服务小区，基站可以通过RRC专用信令如RRC(连接)重配置消息为其配置一个或多个BWP。基站可以将这些BWP中的其中一个配置为默认BWP(具有显式默认BWP指示信息)。优选地，默认BWP上包含同步信号块(Sycnronization Signal Block，SSB)。对UE来说，若一个服务小区未被配置默认BWP，则认为初始BWP就是默认BWP。具有显式默认BWP指示信息的BWP是默认BWP。一般来说，默认BWP一般具有相对较小的带宽，使得UE可以在数据速率较小时在默认BWP上工作，以达到节能的目的；而在UE数据速率较大时可以变更到更大带宽的其他配置的BWP上工作，以提高传输效率。The UE can also be configured with a default BWP. Including the default upstream BWP and/or the default downstream BWP. After the UE uses the initial BWP to access the network, for a serving cell of the UE, the base station can configure one or more BWPs for it through RRC dedicated signaling such as an RRC (connection) reconfiguration message. The base station may configure one of these BWPs as the default BWP (with explicit default BWP indication information). Preferably, the default BWP includes a synchronization signal block (Sycnronization Signal Block, SSB). For the UE, if a serving cell is not configured with a default BWP, the initial BWP is considered to be the default BWP. The BWP with explicit default BWP indication information is the default BWP. Generally speaking, the default BWP generally has a relatively small bandwidth, so that the UE can work on the default BWP when the data rate is small, in order to achieve the purpose of energy saving; and when the UE data rate is large, it can be changed to other larger bandwidths. Work on the configured BWP to improve transmission efficiency.

BWP激活/去激活(activation/deactivation)：对于RRC_connected状态的UE，基站可以对一个服务小区配置多个BWP。但对UE来说，这些配置的BWP并非都是可用的。基站通过控制BWP的激活/去激活状态来决定UE当前使用哪些BWP。BWP激活/去激活状态是对一个特定UE而言的。对激活的BWP，UE认为其是可用的，UE可在该激活的BWP上执行下述操作中的一种或多种：PDCCH监听、物理下行共享信道PDSCH(或称下行共享信道DL-SCH)接收、PUCCH发送、物理上行共享信道PUSCH(或称上行共享信道UL-SCH)发送、随机接入信道(Random Access Channel，RACH)发送、上报该BWP 对应的信道状态信息CSI、发送上行探测参考信号(Sounding Reference Signal，SRS)等。对非激活的BWP，UE在其上执行下述操作的一种或多种：不发送上行PUSCH(或称UL-SCH)、不发送PUCCH、不发送RACH、不监听PDCCH、不接收PDSCH(或称DLL-SCH)、不上报该BWP对应的信道状态信息CSI、不发送上行探测参考信号SRS等。处于激活态的BWP称为激活的BWP，处于去激活态的BWP称为去激活的BWP。BWP activation/deactivation (activation/deactivation): For a UE in the RRC_connected state, the base station can configure multiple BWPs for a serving cell. But for the UE, not all of these configured BWPs are available. The base station decides which BWP the UE currently uses by controlling the activation/deactivation state of the BWP. The BWP activation/deactivation state is for a specific UE. For the activated BWP, the UE considers it to be available, and the UE can perform one or more of the following operations on the activated BWP: PDCCH monitoring, physical downlink shared channel PDSCH (or called downlink shared channel DL-SCH) Reception, PUCCH transmission, physical uplink shared channel PUSCH (or uplink shared channel UL-SCH) transmission, random access channel (Random Access Channel, RACH) transmission, reporting the channel state information CSI corresponding to the BWP, and sending uplink sounding reference signals (Sounding Reference Signal, SRS) etc. For the inactive BWP, the UE performs one or more of the following operations on it: does not send uplink PUSCH (or UL-SCH), does not send PUCCH, does not send RACH, does not monitor PDCCH, does not receive PDSCH (or Called DLL-SCH), the channel state information CSI corresponding to the BWP is not reported, and the uplink sounding reference signal SRS is not sent. The BWP in the activated state is called the activated BWP, and the BWP in the deactivated state is called the deactivated BWP.

在版本15的NR***中，对于RRC_inactive状态的UE虽然可以配置多个BWP，但对于一个服务小区仅支持同时只有一个激活BWP。***可以通过RRC信令来变更BWP的激活状态(通过信息元素firstActiveDownlinkBWP-Id and/or firstActiveUplinkBWP-Id来配置激活BWP)，也支持更动态BWP变更。通过BWP变更，同时去激活一个激活BWP和激活一个去激活BWP。动态BWP变更有两种方式：基于下行控制信息(Downlink Control Information，DCI)信令所指示的BWP变更和基于定时器的BWP变更。所述DCI信令承载在PDCCH信道上，基站通过DCI信令指示UE去激活当前的激活BWP并激活一个去激活BWP。在基于定时器的BWP变更机制下：UE在当其变更到一个不同于默认BWP的激活BWP上时启动该定时器；当在激活BWP上成功解码出一个包含上行许可或下行分配的DCI时重新启动该定时器；当该定时器超时则UE变更到默认BWP上传输，认为激活BWP为默认BWP。该定时器可称为BWP不活动定时器(BWP inactivity timer)。此外，在随机接入过程触发时也可能发生BWP变更。在触发随机接入过程时，若UE的激活上行BWP上没有被配置随机接入资源(PRACH occasions)，则UE变更激活上行BWP为上行初始BWP(initialUplinkBWP信息元素所指示)，同时，对于spCell，UE变更激活下行BWP为下行初始BWP(initialDownlinkBWP信息元素所指示)。若UE的激活上行BWP上有被配置随机接入资源，但激活下行BWP所拥有的BWP标识和激活上行BWP不一样，UE变更激活下行BWP为和激活上行BWP的BWP标识相同的下行BWP。In the Release 15 NR system, although multiple BWPs can be configured for UEs in the RRC_inactive state, only one active BWP is supported for one serving cell at the same time. The system can change the BWP activation state through RRC signaling (configure the activated BWP through the information element firstActiveDownlinkBWP-Id and/or firstActiveUplinkBWP-Id), and also supports more dynamic BWP changes. Through BWP change, deactivate an activated BWP and activate a deactivated BWP at the same time. There are two methods for dynamic BWP changes: BWP changes indicated by Downlink Control Information (DCI) signaling and timer-based BWP changes. The DCI signaling is carried on the PDCCH channel, and the base station instructs the UE to deactivate the current activated BWP and activate a deactivated BWP through the DCI signaling. Under the timer-based BWP change mechanism: the UE starts the timer when it changes to an activated BWP that is different from the default BWP; it restarts when it successfully decodes a DCI containing uplink grant or downlink allocation on the activated BWP. Start the timer; when the timer expires, the UE changes to the default BWP for transmission, and considers the active BWP as the default BWP. This timer may be called a BWP inactivity timer (BWP inactivity timer). In addition, BWP changes may also occur when the random access procedure is triggered. When the random access process is triggered, if the UE’s activated uplink BWP is not configured with random access resources (PRACH occasions), the UE changes the activated uplink BWP to the uplink initial BWP (indicated by the initialUplinkBWP information element). At the same time, for the spCell, The UE changes the activated downlink BWP to the downlink initial BWP (indicated by the initialDownlinkBWP information element). If the UE's activated uplink BWP has random access resources configured, but the BWP identifier of the activated downlink BWP is different from the activated uplink BWP, the UE changes the activated downlink BWP to the same downlink BWP as the activated uplink BWP.

配置许可(Configured Grant，CG)：配置许可是相对于动态调度而言的。在动态调度中，UE的每一个使用的上行许可PDCCH信道中的DCI来调度。配置许可指的是无需动态许可的上行许可配置，相当于半静态调度。基站通过DCI或RRC信令为UE分配的上行许可以周期的形式可以使用多次。若实际的上行许可是通过RRC配置的则称为类型1，若实际的上行许可是通过以配置的调度无线网络临时标识(Configured Scheduling-Radio Network Temppary Identifier，CS-RNTI)寻址的PDCCH来提供的则称为类型2。在CG类型1中，通过RRC消息中的ConfiguredGrantConfig信息元素来配置对应的CG信息，包括上行许可的时域和频域分配、时域偏移、跳频偏移、周期、资源分配方式、调制编码方式、传输块尺寸、路径损耗参考指示等物理层参数。Configured Grant (CG): The configured grant is relative to dynamic scheduling. In dynamic scheduling, the DCI in the uplink grant PDCCH channel used by each UE is scheduled. Configuration permission refers to the configuration of uplink permission without dynamic permission, which is equivalent to semi-static scheduling. The uplink license allocated to the UE by the base station through DCI or RRC signaling can be used multiple times in a periodic form. If the actual uplink grant is configured through RRC, it is called type 1. If the actual uplink grant is provided through the PDCCH addressed by the configured Scheduling-Radio Network Temppary Identifier (CS-RNTI) Is called type 2. In CG type 1, the corresponding CG information is configured through the ConfiguredGrantConfig information element in the RRC message, including the time domain and frequency domain allocation of the uplink permission, time domain offset, frequency hopping offset, period, resource allocation mode, modulation coding Physical layer parameters such as mode, transmission block size, and path loss reference indication.

如前所述，小数据传输项目的研究目标之一是实现RRC_INACTIVE状态UE在预配置的PUSCH资源上发送小数据包而无需进入RRC_CONNECTED。优选地，所述预配置的PUSCH是专用资源，即不与其他UE共享，一种方式是通过配置CG类型1来实现所述预配置的PUSCH传输。本公开中称其为小数据传输CG(Small Data Transmission CG，SDT CG)，也可以称为预配置的上行传输、预配置的小数据发送等，本公开不限定其命名。所述CG的配置是包含在BWP配置中的，也就是说一个BWP配置中若包含了CG配置，则所述CG资源就使用对应的BWP上的资源。As mentioned earlier, one of the research goals of the small data transmission project is to realize that UEs in the RRC_INACTIVE state can send small data packets on the pre-configured PUSCH resources without entering RRC_CONNECTED. Preferably, the pre-configured PUSCH is a dedicated resource, that is, it is not shared with other UEs. One way is to implement the pre-configured PUSCH transmission by configuring CG type 1. In the present disclosure, it is referred to as Small Data Transmission CG (Small Data Transmission CG, SDT CG), and may also be referred to as pre-configured uplink transmission, pre-configured small data transmission, etc., and the present disclosure does not limit its naming. The configuration of the CG is included in the BWP configuration, that is, if the CG configuration is included in a BWP configuration, the CG resource uses the resource on the corresponding BWP.

下述实施例给出了UE在配置了SDT CG的情况下如何管理所使用的上行资源如BWP的解决方法。The following embodiments provide solutions for how to manage the used uplink resources such as BWP when the UE is configured with SDT CG.

实施例1Example 1

该实施例考虑一种情况：UE所被配置的SDT CG所关联的BWP不是初始BWP或不包含初始BWP。所述不包含初始BWP指的是初始BWP的时频资源不是部分或全部和所述SDT CG所关联的BWP重叠。备选地，不包含初始BWP也可指所述BWP没有配置用于公共信道接收的资源如公共搜索空间。当所述UE进入RRC_INACTIVE状态后，UE既需要在初始BWP上监听寻呼、***信息或以P-RNTI寻址的短消息等公共信道，又需要在所述专用BWP上执行单播数据传输如用于响应小数据发送的下行传输，就是说在一个方向上RRC_INACTIVE UE需要管理两个BWP。基于此，实施例1给出了一种UE在触发在SDT CG上的发送方式时将正在使用的BWP变更为SDT CG所关联的BWP的方法，在UE或UE的MAC实体上执行。图1表示实施例1中的作为一例的数据传输方法的处理流程。如图1所示，本公开的实施例1中的数据传输方法可以包括如下的步骤。This embodiment considers a situation: the BWP associated with the SDT CG configured by the UE is not an initial BWP or does not include an initial BWP. The excluding the initial BWP means that the time-frequency resources of the initial BWP are not partially or completely overlapped with the BWP associated with the SDT CG. Alternatively, not including the initial BWP may also mean that the BWP is not configured with resources for common channel reception, such as a common search space. When the UE enters the RRC_INACTIVE state, the UE not only needs to monitor common channels such as paging, system information, or short messages addressed by P-RNTI on the initial BWP, but also needs to perform unicast data transmission on the dedicated BWP. It is used to respond to the downlink transmission of small data transmission, that is, RRC_INACTIVE UE needs to manage two BWPs in one direction. Based on this, Embodiment 1 provides a method for the UE to change the BWP being used to the BWP associated with the SDT CG when the UE triggers the sending mode on the SDT CG, which is executed on the UE or the MAC entity of the UE. FIG. 1 shows the processing flow of the data transmission method in the first embodiment as an example. As shown in FIG. 1, the data transmission method in Embodiment 1 of the present disclosure may include the following steps.

步骤1：UE接收来自基站的包含SDT CG配置的RRC消息。优选地，所述RRC消息为RRC释放消息。其中，优选地，所述SDT CG配置包含在所关联的BWP配置中；备选地，所述SDT CG中包含一个BWP标识，用于指示所述CG资源所对应的BWP。所述SDT CG配置也可称为预配置数据传输资源配置等。Step 1: The UE receives the RRC message containing the SDT CG configuration from the base station. Preferably, the RRC message is an RRC release message. Wherein, preferably, the SDTCG configuration is included in the associated BWP configuration; alternatively, the SDTCG includes a BWP identifier for indicating the BWP corresponding to the CG resource. The SDT CG configuration may also be referred to as pre-configured data transmission resource configuration, etc.

步骤2：UE发起基于SDT CG方式的数据发送。Step 2: The UE initiates data transmission based on the SDT CG method.

优选地，当UE RRC层本次数据传输满足采用SDT CG方式传输的条件时，发起基于SDT CG方式的数据发送，向下层指示使用SDT CG方式，或对下层应用步骤1中所收到的SDT CG配置。Preferably, when the current data transmission of the UE RRC layer meets the conditions for using the SDT CG mode transmission, it initiates the data transmission based on the SDT CG mode, instructs the lower layer to use the SDT CG mode, or applies the SDT received in step 1 to the lower layer CG configuration.

此外，图2表示实施例1中的作为另一例的数据传输方法的处理流程。如图2所示，本公开的实施例1中的数据传输方法还可以包括如下的步骤。In addition, FIG. 2 shows the processing flow of the data transmission method as another example in the first embodiment. As shown in FIG. 2, the data transmission method in Embodiment 1 of the present disclosure may further include the following steps.

步骤3：变更当前使用的BWP为步骤1中SDT CG配置所关联的BWP。在该步骤中，UE激活并恢复SDT CG所配置的上行许可。Step 3: Change the currently used BWP to the BWP associated with the SDTCG configuration in step 1. In this step, the UE activates and restores the uplink grant configured by the SDT CG.

优选地，步骤3在UE判断当前所使用的BWP不是步骤1中SDT CG配置所关联的BWP时执行。Preferably, step 3 is executed when the UE determines that the currently used BWP is not the BWP associated with the SDTCG configuration in step 1.

优选地，所述BWP是下行BWP(如使用BWP-Downlink信息元素配置)；备选地，所述BWP是上行BWP(如使用BWP-Uplink信息元素配置)，或上行BWP和下行BWP。也就是说步骤3中，UE可以仅变更下行BWP或上行BWP，也可以同时变更上行BWP和下行BWP。所述当前使用的BWP也可称当前工作的BWP，或复用现有机制中 RRC_CONNECTED状态下的术语，称为激活BWP。Preferably, the BWP is a downlink BWP (such as using BWP-Downlink information element configuration); alternatively, the BWP is an uplink BWP (such as using BWP-Uplink information element configuration), or an uplink BWP and a downlink BWP. That is to say, in step 3, the UE can change only the downlink BWP or the uplink BWP, or can change the uplink BWP and the downlink BWP at the same time. The currently used BWP can also be called the currently working BWP, or reuse the terminology in the RRC_CONNECTED state in the existing mechanism, called the activated BWP.

显然地，在步骤1和步骤2之间还包括UE进入RRC_INACTIVE状态。在步骤2之前，处于RRC_INACTIVE状态的UE工作在初始BWP上。Obviously, between step 1 and step 2 also includes that the UE enters the RRC_INACTIVE state. Before step 2, the UE in the RRC_INACTIVE state works on the initial BWP.

实施例2Example 2

该实施例与实施例1基于同样的场景。实施例2给出了一种UE在结束在SDT CG上的发送方式时将正在使用的BWP变更为初始BWP的方法，在UE或UE的MAC实体上执行。图3表示实施例2中的作为一例的数据传输方法的处理流程。如图3所示，本公开的实施例2中的数据传输方法可以包括如下步骤。This embodiment is based on the same scenario as the first embodiment. Embodiment 2 provides a method for the UE to change the BWP being used to the initial BWP when the UE finishes the sending mode on the SDTCG, which is executed on the UE or the MAC entity of the UE. FIG. 3 shows the processing flow of the data transmission method as an example in the second embodiment. As shown in FIG. 3, the data transmission method in Embodiment 2 of the present disclosure may include the following steps.

步骤1：UE结束使用SDT CG资源的上行发送。Step 1: The UE ends uplink transmission using SDT CG resources.

所述结束使用SDT CG资源的上行发送可以是成功结束也可以是UE认为其失败结束。优选地，成功结束指的是，UE在SDT CG所对应的资源上执行了上行传输后，成功收到所述上行发送对应的下行响应，如收到以一个该UE特定的无线网络临时标识RNTI寻址的PDCCH、成功解码所收到的下行MAC协议数据单元PDU、收到对应的下行混合自动重传(HARQ)的确认(ACK)或收到对应的下行响应RRC消息如RRC释放消息等。优选地，所述RNTI是SDT CG传输方式所专用的RNTI，包含在SDT CG的配置中。优选地，失败结束指的是，UE在SDT CG所对应的资源上执行了上行传输后，未收到对应的下行响应，如在整个下行响应监听时间窗或定时器的时间结束后都没有收到对应的下行响应。备选地，也可以指所收到的响应指示了UE回退到传统方式来执行数据发送。所述传统方式指的是非SDT CG方式，不采用预配置的CG资源而是采用如随机接入的方式获得与网络侧的联系来发送上行数据。备选地，也可以指所述UE认为其处于上行不同步状态，或称上行时间提前(Timing Advance，TA)无效，如用于SDT的上行时间对齐定时器(Time Alignment Timer，TAT)超时或不在运行。所述定时器用于RRC_INACTIVE状态下的SDT的上行时间对齐维护，当该定时器运行时，UE认为上行同步，TA有效，可以执行SDT传输；否则UE认为上行失步，TA无效，不能执行SDT传输。The end of the uplink transmission using the SDT CG resource may be completed successfully or may be deemed by the UE to end in failure. Preferably, the successful completion refers to that after the UE performs uplink transmission on the resources corresponding to the SDT CG, it successfully receives the downlink response corresponding to the uplink transmission, such as receiving a UE-specific radio network temporary identifier RNTI Addressed PDCCH, successfully decoded the received downlink MAC protocol data unit PDU, received the corresponding downlink hybrid automatic repeat (HARQ) acknowledgment (ACK), or received the corresponding downlink response RRC message such as the RRC release message. Preferably, the RNTI is a dedicated RNTI for the SDT CG transmission mode, and is included in the configuration of the SDT CG. Preferably, the failed termination means that the UE did not receive the corresponding downlink response after performing uplink transmission on the resources corresponding to the SDT CG, for example, it did not receive the corresponding downlink response after the entire downlink response listening time window or the timer expires. To the corresponding downstream response. Alternatively, it can also mean that the received response indicates that the UE falls back to the traditional way to perform data transmission. The traditional method refers to a non-SDT CG method, which does not use pre-configured CG resources but uses a method such as random access to obtain contact with the network side to send uplink data. Alternatively, it can also mean that the UE considers it to be in an uplink asynchronous state, or that the uplink time advance (Timing Advance, TA) is invalid, such as the uplink time alignment timer (Time Alignment Timer, TAT) used for SDT expires or Is not running. The timer is used for the uplink time alignment maintenance of the SDT in the RRC_INACTIVE state. When the timer is running, the UE considers that the uplink is synchronized and the TA is valid, and can perform SDT transmission; otherwise, the UE thinks that the uplink is out of synchronization, and the TA is invalid, and SDT transmission cannot be performed. .

步骤2：变更当前使用的BWP为初始BWP。Step 2: Change the currently used BWP to the initial BWP.

优选地，所述BWP是下行BWP；备选地，所述BWP也包括上行BWP。也就是说步骤2中，UE可以仅变更下行BWP或上行BWP，也可以同时变更上行BWP和下行BWP。所述当前使用的BWP也可以复用现有机制中RRC_CONNECTED状态下的术语，称为激活BWP。Preferably, the BWP is a downlink BWP; alternatively, the BWP also includes an uplink BWP. That is to say, in step 2, the UE can change only the downlink BWP or the uplink BWP, or it can change the uplink BWP and the downlink BWP at the same time. The currently used BWP can also reuse the terminology in the RRC_CONNECTED state in the existing mechanism, and is called an activated BWP.

显然地，在步骤1之前还包括UE接收SDT CG配置，进入RRC_INACTIVE状态，发起采用SDT CG方式的上行数据发送等操作。该实施例中不赘述。Obviously, before step 1, it also includes that the UE receives the SDT CG configuration, enters the RRC_INACTIVE state, and initiates operations such as sending uplink data in the SDT CG mode. It will not be repeated in this embodiment.

实施例3Example 3

该实施例考虑另一种情况：UE所被配置的SDT CG所关联的BWP是初始BWP或包含初始BWP。所述包含初始BWP指的是初始BWP的时频资源部分或全部和所述SDT CG所关联的BWP重叠。本公开的实施例3中的数据传输方法可以包括如下步骤。This embodiment considers another case: the BWP associated with the SDT CG configured for the UE is the initial BWP or includes the initial BWP. The inclusion of the initial BWP means that part or all of the time-frequency resources of the initial BWP overlap with the BWP associated with the SDT CG. The data transmission method in Embodiment 3 of the present disclosure may include the following steps.

步骤2：UE离开RRC_CONNECTED状态进入RRC_INACTIVE状态。Step 2: The UE leaves the RRC_CONNECTED state and enters the RRC_INACTIVE state.

可选地，步骤2还包括，UE(对下层)应用步骤1中的SDT CG配置。所述下层指的是MAC层或物理层。Optionally, step 2 further includes that the UE (to the lower layer) applies the SDT CG configuration in step 1. The lower layer refers to the MAC layer or the physical layer.

步骤3：若UE当前使用的BWP不是消息1中RRC消息中所配置的BWP，则UE将当前使用的BWP变更到所述RRC消息中所指示的BWP。优选地，所述BWP是下行BWP；备选地，所述BWP也包括上行BWP。也就是说步骤2中，UE可以仅变更下行BWP或上行BWP，也可以同时变更上行BWP和下行BWP。所述当前使用的BWP也可以复用现有机制中RRC_CONNECTED状态下的术语，称为激活BWP。UE执行BWP变更后，所述被配置的CG对应的上行许可即被激活/恢复。Step 3: If the BWP currently used by the UE is not the BWP configured in the RRC message in message 1, the UE changes the currently used BWP to the BWP indicated in the RRC message. Preferably, the BWP is a downlink BWP; alternatively, the BWP also includes an uplink BWP. That is to say, in step 2, the UE can change only the downlink BWP or the uplink BWP, or it can change the uplink BWP and the downlink BWP at the same time. The currently used BWP can also reuse the terminology in the RRC_CONNECTED state in the existing mechanism, and is called an activated BWP. After the UE performs the BWP change, the uplink grant corresponding to the configured CG is activated/recovered.

上述UE基于步骤2执行步骤3，也就是UE在步骤2发生时即执行步骤3。The above-mentioned UE executes step 3 based on step 2, that is, the UE executes step 3 when step 2 occurs.

在该实施例中，为了避免UE在RRC_INACTIVE状态下的因为执行在预配置资源上发送数据而导致的BWP变更，网络侧在配置SDT CG时，必须将预配置的用于RRC_INACTIVE状态数据传输的资源配置在初始BWP或者包含初始BWP的BWP上。也就是说所述SDT CG所关联的BWP具有公共搜索空间(Common Search Space，CSS)配置，和/或同步信号块(Synchronization signal Block，SSB)配置、和/或随机接入资源(PRACH occasions)配置等，使得UE可以在其上执行公共信道的接收或发送。所述CSS指的是用于接收***信息或寻呼的CSS。具有上述配置的UE，当离开RRC_CONNECTED状态进入RRC_INACTIVE状态时，将其正在工作的BWP变更为SDT CG配置中所关联的BWP。In this embodiment, in order to avoid the BWP change of the UE in the RRC_INACTIVE state due to the execution of sending data on the pre-configured resources, the network side must use the pre-configured resources for data transmission in the RRC_INACTIVE state when configuring SDT CG. Configure on the initial BWP or the BWP that contains the initial BWP. That is to say, the BWP associated with the SDT CG has a common search space (Common Search Space, CSS) configuration, and/or a synchronization signal block (Synchronization signal Block, SSB) configuration, and/or a random access resource (PRACH occasions) Configuration, etc., so that the UE can perform reception or transmission of the common channel thereon. The CSS refers to the CSS used to receive system information or paging. The UE with the above configuration changes its working BWP to the BWP associated in the SDTCG configuration when it leaves the RRC_CONNECTED state and enters the RRC_INACTIVE state.

上述各实施例中的SDT CG配置不仅指的是上行资源许可的配置，还可以用于指代用于在RRC_INACTIVE状态下的预配置上行资源上发送数据的其他参数配置，如包含用于发送上行数据的上行资源配置如上行许可CG配置、上行BWP配置等，也包含用于接收对应的下行响应的下行资源配置，如用于监听PDCCH的参数配置、下行BWP配置等，还可以包含下行响应接收窗/定时器等配置。优选地，所述BWP配置包含BWP标识，若所述BWP配置中的BWP标识不存在，则UE认为所述BWP是接收包含所述配置的RRC消息时的激活BWP，或UE认为所述BWP是初始BWP。The SDT CG configuration in the foregoing embodiments not only refers to the configuration of the uplink resource grant, but can also be used to refer to other parameter configurations used to send data on the pre-configured uplink resources in the RRC_INACTIVE state, such as including the configuration for sending uplink data. The uplink resource configuration such as the uplink permission CG configuration, the uplink BWP configuration, etc., also includes the downlink resource configuration used to receive the corresponding downlink response, such as the parameter configuration used to monitor the PDCCH, the downlink BWP configuration, etc., and can also include the downlink response receiving window /Timer and other configurations. Preferably, the BWP configuration includes a BWP identifier. If the BWP identifier in the BWP configuration does not exist, the UE considers that the BWP is the activated BWP when receiving the RRC message containing the configuration, or the UE considers the BWP to be Initial BWP.

实施例4Example 4

该实施例提供了一种SDT CG配置的管理方法，在UE上执行。在该实施例中，认为UE将所被配置的用于发送上行小数据的预配置上行资源配置保存在UE非激活接入层上下文中。This embodiment provides a method for managing SDT CG configuration, which is executed on the UE. In this embodiment, it is considered that the UE saves the configured pre-configured uplink resource configuration for sending uplink small data in the UE inactive access stratum context.

当UE收到包含在RRC消息中的SDT CG配置时，UE将其保存在UE非激活接入层上下文中。优选地，所述RRC消息为RRC释放消息。所述SDT CG配置的值不设置为释放。When the UE receives the SDT CG configuration contained in the RRC message, the UE saves it in the UE inactive access stratum context. Preferably, the RRC message is an RRC release message. The value of the SDT CG configuration is not set to release.

当UE收到包含在RRC消息中的SDT CG配置时，若UE非激活接入层上下文中有保存的SDT CG配置时，在UE非激活接入层上下文中，UE用新收到的SDT CG配置替换掉所保存的SDT CG配置。When the UE receives the SDT CG configuration included in the RRC message, if there is a saved SDT CG configuration in the UE inactive access stratum context, in the UE inactive access stratum context, the UE uses the newly received SDT CG The configuration replaces the saved SDT CG configuration.

可选地，在RRC恢复过程中，UE发送RRC恢复请求消息发起RRC恢复过程，当UE收到网络响应的RRC恢复消息后，UE释放掉UE非激活接入层上下文，所述UE非激活接入层上下文不包含所述SDT CG配置。Optionally, during the RRC recovery process, the UE sends an RRC recovery request message to initiate the RRC recovery process. When the UE receives the RRC recovery message in response to the network, the UE releases the UE inactive access stratum context, and the UE inactive access The incoming layer context does not include the SDT CG configuration.

可选地，当UE收到RRC恢复消息进入RRC_CONNECTED状态时，UE挂起所配置的SDT CG。也就是说所述SDT CG对应的上行许可在RRC_CONNECTED状态下无效。Optionally, when the UE receives the RRC recovery message and enters the RRC_CONNECTED state, the UE suspends the configured SDTCG. That is to say, the uplink grant corresponding to the SDT CG is invalid in the RRC_CONNECTED state.

可选地，当UE采用SDT CG方式传输数据失败，如收到下层来的SDT CG传输失败指示，或收到网络侧的回退指示或拒绝消息时，UE放弃使用SDT CG方式，所述放弃包括挂起所配置的SDT CG对应的上行许可。Optionally, when the UE fails to transmit data in the SDT CG mode, such as receiving an SDT CG transmission failure indication from the lower layer, or receiving a fallback instruction or rejection message from the network side, the UE abandons the use of the SDT CG mode. Including suspension of the uplink license corresponding to the configured SDT CG.

可选地，在RRC恢复过程的初始化阶段，如在执行RRC恢复消息的发送操作时，UE恢复包含SDT CG配置在内的UE非激活接入层上下文。Optionally, in the initialization phase of the RRC recovery process, for example, when performing the sending operation of the RRC recovery message, the UE recovers the UE inactive access stratum context including the SDT CG configuration.

实施例5Example 5

该实施例提供了SDT CG的一种配置方式，最大限度利用现有的CG配置方式，减少信令开销。This embodiment provides a configuration method of SDT CG, which maximizes the use of the existing CG configuration method and reduces signaling overhead.

在该实施例中，UE从基站接收的SDT CG配置复用现有机制中的CG类型1的配置方式，即通过RRC重配置消息来获得。在所述用于配置CG类型1的ConfiguredGrantConfig信息元素中，若包含一个指示信息1，则UE认为所述CG配置为SDT CG配置。所述指示信息1用于指示所述CG类型1配置在UE进入RRC_INACTIVE状态后使用即作为UE的SDT CG配置。In this embodiment, the SDT CG configuration received by the UE from the base station reuses the configuration mode of CG type 1 in the existing mechanism, that is, it is obtained through an RRC reconfiguration message. In the ConfiguredGrantConfig information element used to configure the CG type 1, if an indication information 1 is included, the UE considers the CG configuration to be an SDT CG configuration. The indication information 1 is used to indicate that the CG type 1 configuration is used as the SDT CG configuration of the UE after the UE enters the RRC_INACTIVE state.

实施例6Example 6

现有机制中，并不是所有的数据类型或业务类型都适合通过CG类型1的资源配置方式来发送，因此，当前的协议规范中对一个数据类型的传输通道即逻辑信道配置时，其配置(LogicalChannelConfig信息元素)中包含一个configuredGrantType1Allowed信息元素，用于指示来自该逻辑信道的数据是否可以在CG类型1上发送。In the existing mechanism, not all data types or service types are suitable for transmission through the resource configuration method of CG type 1. Therefore, when the current protocol specification configures a data type transmission channel, that is, a logical channel, its configuration ( The LogicalChannelConfig information element contains a configuredGrantType1Allowed information element, which is used to indicate whether the data from the logical channel can be sent on CG type 1.

考虑到所述SDT CG配置也采用CG类型1的方式，但是现有机制中所配置的CG类型1和SDT CG类型1所使用的场景和数据类型会有不同，所以在该实施例中，进一步限定，所述configuredGrantType1Allowed信息元素若存在逻辑信道配置中，则仅用于指示来自所述逻辑信道的数据可以在非SDT CG类型1上发送。所述非SDT CG类型1指不用于RRC_INACTIVE上执行上行数据发送的预配置的CG类型1。如前所述，在一种方式中，所述非SDT CG类型1可以是不包含所述指示信息1的CG类型1。所述指示信息1用于指示所述CG类型1配置在UE进入RRC_INACTIVE状态后使用即作为UE的SDT CG配置。Considering that the SDT CG configuration also adopts the CG type 1, but the scenarios and data types used by the CG type 1 and SDT CG type 1 configured in the existing mechanism will be different, so in this embodiment, further As a limitation, if the configuredGrantType1Allowed information element exists in the logical channel configuration, it is only used to indicate that the data from the logical channel can be sent on non-SDT CG type 1. The non-SDT CG type 1 refers to a pre-configured CG type 1 that is not used to perform uplink data transmission on RRC_INACTIVE. As mentioned above, in one manner, the non-SDT CG type 1 may be the CG type 1 that does not include the indication information 1. The indication information 1 is used to indicate that the CG type 1 configuration is used as the SDT CG configuration of the UE after the UE enters the RRC_INACTIVE state.

更进一步地，UE从基站收到的逻辑信道配置中可以包含一个指示信息2，若所述指示信息2存在，则指示来自所述逻辑信道的数据可以在SDT CG类型1上发送。例如，以SDTconfiguredGrantType1Allowed信息元素来标识指示信息2。Furthermore, the logical channel configuration received by the UE from the base station may include an indication information 2. If the indication information 2 exists, it indicates that the data from the logical channel may be sent on SDT CG type 1. For example, the SDTconfiguredGrantType1Allowed information element is used to identify the indication information 2.

实施例7Example 7

在NR***中，由于高频的原因，一般采用波束(beam)技术来实现更可靠的传输。在初始接入时，UE和基站间通过随机接入过程来建立发送和接收的波束对，其后，可以基于测量不断调整或细化所使用的波束或波束对。所述波束指在多天线***中利用波束成形技术(beamforming)所形成的具有特定方向的传输。可以认为是由PMI(precoding matrix indicator)码本中的特定码字来确定；或者是由参考信号资源或参考信号资源指示来确定(如由一个参考信号资源或参考信号资源指示来确定一个beam)；或者由同步信号块(SS block)来确定(如一个同步信号块可以确定一个beam)；或者可以认为是波束由一个集合的时频资源来确定(如一个集合的时频资源可以对应为一个波束)；或者由参考信号资源和预编码矩阵指示共同确定(如由参考信号资源和预编码矩阵指示共同确定一个beam)；或者由参考信号资源指示和预编码矩阵指示共同确定(如由参考信号资源指示和预编码矩阵指示共同确定一个beam)，所述参考信号可以是信道状态信息参考信号(Channel state Information-Reference Signal，CSI-RS)、探测参考信号(Sounding Reference Signal，SRS)、移动性参考信号MRS(Mobility Reference Signal，即用作移动性如层3移动性或基于无线资源管理RRM(Radio Resource Management)测量的移动性的参考信号)、解调参考信号DMRS(Demodulation Reference Signal)等。In the NR system, due to high frequency, beam technology is generally used to achieve more reliable transmission. During the initial access, the UE and the base station establish a beam pair for sending and receiving through a random access process. Thereafter, the beam or beam pair used can be continuously adjusted or refined based on the measurement. The beam refers to a transmission with a specific direction formed by beamforming technology in a multi-antenna system. It can be considered to be determined by a specific codeword in the PMI (precoding matrix indicator) codebook; or determined by a reference signal resource or a reference signal resource indicator (for example, a beam is determined by a reference signal resource or a reference signal resource indicator) ; Or determined by the synchronization signal block (SS block) (for example, a synchronization signal block can determine a beam); or it can be considered that the beam is determined by a set of time-frequency resources (for example, a set of time-frequency resources can correspond to one Beam); or jointly determined by the reference signal resource and the precoding matrix indication (for example, a beam is jointly determined by the reference signal resource and the precoding matrix indication); or jointly determined by the reference signal resource indication and the precoding matrix indication (for example, by the reference signal The resource indicator and the precoding matrix indicator jointly determine a beam), the reference signal may be a channel state information reference signal (Channel state Information-Reference Signal, CSI-RS), a sounding reference signal (Sounding Reference Signal, SRS), and mobility Reference signal MRS (Mobility Reference Signal), which is used as a reference signal for mobility such as layer 3 mobility or mobility based on radio resource management (Radio Resource Management) measurement), demodulation reference signal DMRS (Demodulation Reference Signal), and so on.

在该实施例中，所述SDT CG的配置中包含了所使用的上行波束的配置信息。例如，所述配置信息可以是用于标识上行波束的一个参考信号标识。考虑到UE的移动性和信道多变性，存在一种情况，UE在使用SDT CG方式在预配置的上行资源上发送小尺寸上行数据时，所预配置的上行波束并不合适，若UE在所述上行波束上发送数据，很可能导致数据发送失败。In this embodiment, the configuration of the SDTCG includes the configuration information of the uplink beam used. For example, the configuration information may be a reference signal identifier used to identify the uplink beam. Considering the mobility and channel variability of the UE, there is a situation. When the UE uses the SDT CG method to send small-size uplink data on the pre-configured uplink resources, the pre-configured uplink beam is not appropriate. Sending data on the uplink beam is likely to cause data transmission failure.

基于波束在上行和下行方向上的一致性，在一种方式中，UE在确定是否满足使用SDT CG方式发送上行数据时，需要判断所述在SDT CG的配置中所包含的上行波束方向上的下行接收信道质量是否足够好，如果足够好，则满足使用SDT CG方式发送上行数据的条件；否则，则不满足使用SDT CG方式的条件，UE可以选择使用传统方式执行随机接入的过程发送数据。所述足够好，指的是其下行链路信道质量超过某一个配置的门限值。Based on the consistency of the beams in the uplink and downlink directions, in one method, the UE needs to determine whether the uplink beam direction included in the SDT CG configuration is satisfied when determining whether to use the SDT CG mode to send uplink data. Whether the quality of the downlink receiving channel is good enough, if it is good enough, it meets the conditions of using SDT CG to send uplink data; otherwise, it does not meet the conditions of using SDT CG, and the UE can choose to use the traditional method to perform random access to send data . The term “good enough” means that the quality of its downlink channel exceeds a certain configured threshold.

在一种方式中，UE在SDT CG所对应的上行许可上发送上行数据时，同时可以在MAC协议数据单元中包含一个或多个下行波束所对应的信道质量测量结果信息，比如以MAC控制元素的形式来携带。在另一种方式中，处于RRC_CONNECTD状态的UE可以通过发送一个请求RRC消息的方式来请求基站为其分配SDT CG预配置资源或者向基站提供分配SDT CG预配置资源的辅助信息如传输块大小、传输周期等。所述RRC消息中可以包含一个或多个下行波束所对应的信道质量测量结果信息。优选地，所述信道测量结果信息包含多个比特，每个比特对应一个下行波束，若所述比特置为1，则认为所述下行波束的信道质量结果大于某一个配置的门限值，否则若所述比特置为0，则认为所述下行波束的信道质量结果小于某一个配置的门限值。In one way, when the UE sends uplink data on the uplink grant corresponding to SDT CG, it can also include the channel quality measurement result information corresponding to one or more downlink beams in the MAC protocol data unit, such as the MAC control element To carry. In another way, the UE in the RRC_CONNECTD state can request the base station to allocate SDT CG pre-configured resources for it by sending a request RRC message, or provide the base station with auxiliary information such as transmission block size, SDT CG pre-configured resources, Transmission cycle, etc. The RRC message may include channel quality measurement result information corresponding to one or more downlink beams. Preferably, the channel measurement result information includes multiple bits, and each bit corresponds to a downlink beam. If the bit is set to 1, the channel quality result of the downlink beam is considered to be greater than a configured threshold; otherwise If the bit is set to 0, it is considered that the channel quality result of the downlink beam is less than a certain configured threshold.

实施例8Example 8

该实施例对本公开的用户设备UE进行说明。图4是表示本发明所涉及的用户设备UE的框图。如图4所示，该用户设备UE40包括处理器40l和存储器402。处理器401例如可以包括微处理器、微控制器、嵌入式处理器等。存储器402例如可以包括易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器等。存储器402上存储有程序指令。该指令在由处理器401运行时，可以执行本发明中详细描述的上述数据传输方法。This embodiment describes the user equipment UE of the present disclosure. Fig. 4 is a block diagram showing a user equipment UE related to the present invention. As shown in FIG. 4, the user equipment UE40 includes a processor 401 and a memory 402. The processor 401 may include, for example, a microprocessor, a microcontroller, an embedded processor, and the like. The memory 402 may include, for example, volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memories. The memory 402 stores program instructions. When the instruction is executed by the processor 401, it can execute the above-mentioned data transmission method described in detail in the present invention.

本公开中，不同实施例之间可以协调工作，一些定义或术语在无特殊说明的情况下，不同实施例之间是通用的。In the present disclosure, different embodiments can work in coordination, and some definitions or terms are common among different embodiments without special instructions.

在本申请中，“基站”是指具有较大发射功率和较广覆盖面积的移动通信数据和控制交换中心，包括资源分配调度、数据接收发送等功能。“用户设备”是指用户移动终端，例如包括移动电话、笔记本等可以与基站或者微基站进行无线通信的终端设备。In this application, "base station" refers to a mobile communication data and control switching center with larger transmission power and wider coverage area, including functions such as resource allocation and scheduling, data reception and transmission. "User equipment" refers to user mobile terminals, such as mobile phones, notebooks, and other terminal devices that can communicate with base stations or micro base stations wirelessly.

上文已经结合优选实施例对本公开的方法和涉及的设备进行了描述。本领域技术人员可以理解，上面示出的方法仅是示例性的。本公开的方法并不局限于上面示出的步骤和顺序。上面示出的基站和用户设备可以包括更多的模块，例如还可以包括可以开发的或者将来开发的可用于基站、MME、或UE的模块等等。上文中示出的各种标识仅是示例性的而不是限制性的，本公开并不局限于作为这些标识的示例的具体信元。本领域技术人员根据所示实施例的教导可以进行许多变化和修改。The method and related equipment of the present disclosure have been described above in conjunction with preferred embodiments. Those skilled in the art can understand that the method shown above is only exemplary. The method of the present disclosure is not limited to the steps and sequence shown above. The base station and user equipment shown above may include more modules, for example, may also include modules that can be developed or developed in the future that can be used for base stations, MMEs, or UEs, and so on. The various identifiers shown above are only exemplary rather than restrictive, and the present disclosure is not limited to specific information elements as examples of these identifiers. Those skilled in the art can make many changes and modifications based on the teaching of the illustrated embodiment.

运行在根据本公开的设备上的程序可以是通过控制中央处理单元(CPU)来使计算机实现本公开的实施例功能的程序。该程序或由该程序处理的信息可以临时存储在易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器***中。The program running on the device according to the present disclosure may be a program that causes the computer to implement the functions of the embodiments of the present disclosure by controlling a central processing unit (CPU). The program or the information processed by the program can be temporarily stored in volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory systems.

用于实现本公开各实施例功能的程序可以记录在计算机可读记录介质上。可以通过使计算机***读取记录在所述记录介质上的程序并执行这些程序来实现相应的功能。此处的所谓“计算机***”可以是嵌入在该设备中的计算机***，可以包括操作***或硬件(如***设备)。“计算机可读记录介质”可以是半导体记录介质、光学记录介质、磁性记录介质、短时动态存储程序的记录介质、或计算机可读的任何其他记录介质。The program for realizing the functions of the various embodiments of the present disclosure may be recorded on a computer-readable recording medium. Corresponding functions can be realized by causing the computer system to read the programs recorded on the recording medium and execute these programs. The so-called "computer system" herein may be a computer system embedded in the device, and may include an operating system or hardware (such as peripheral devices). The "computer-readable recording medium" may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium storing a program dynamically for a short period of time, or any other recording medium readable by a computer.

用在上述实施例中的设备的各种特征或功能模块可以通过电路(例如，单片或多片集成电路)来实现或执行。设计用于执行本说明书所描述的功能的电路可以包括通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、或其他可编程逻辑器件、分立的门或晶体管逻辑、分立的硬件组件、或上述器件的任意组合。通用处理器可以是微处理器，也可以是任何现有的处理器、控制器、微控制器、或状态机。上述电路可以是数字电路，也可以是模拟电路。因半导体技术的进步而出现了替代现有集成电路的新的集成电路技术的情况下，本公开的一个或多个实施例也可以使用这些新的集成电路技术来实现。Various features or functional modules of the devices used in the above-mentioned embodiments can be implemented or executed by circuits (for example, single-chip or multi-chip integrated circuits). Circuits designed to perform the functions described in this specification can include general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, discrete Gate or transistor logic, discrete hardware components, or any combination of the above devices. The general-purpose processor may be a microprocessor, or any existing processor, controller, microcontroller, or state machine. The above-mentioned circuit can be a digital circuit or an analog circuit. In the case where new integrated circuit technologies appear to replace existing integrated circuits due to advances in semiconductor technology, one or more embodiments of the present disclosure may also be implemented using these new integrated circuit technologies.

此外，本公开并不局限于上述实施例。尽管已经描述了所述实施例的各种示例，但本公开并不局限于此。安装在室内或室外的固定或非移动电子设备可以用作终端设备或通信设备，如AV设备、厨房设备、清洁设备、空调、办公设备、自动贩售机、以及其他家用电器等。In addition, the present disclosure is not limited to the above-mentioned embodiments. Although various examples of the embodiment have been described, the present disclosure is not limited thereto. Fixed or non-mobile electronic equipment installed indoors or outdoors can be used as terminal equipment or communication equipment, such as AV equipment, kitchen equipment, cleaning equipment, air conditioners, office equipment, vending machines, and other household appliances.

如上，已经参考附图对本公开的实施例进行了详细描述。但是，具体的结构并不局限于上述实施例，本公开也包括不偏离本公开主旨的任何设计改动。另外，可以在权利要求的范围内对本公开进行多种改动，通过适当地组合不同实施例所公开的技术手段所得到的实施例也包含在本公开的技术范围内。此外，上述实施例中所描述的具有相同效果的组件可以相互替代。As above, the embodiments of the present disclosure have been described in detail with reference to the drawings. However, the specific structure is not limited to the above-mentioned embodiments, and the present disclosure also includes any design changes that do not deviate from the gist of the present disclosure. In addition, various modifications can be made to the present disclosure within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present disclosure. In addition, the components having the same effects described in the above embodiments may be substituted for each other.

Claims

一种数据传输方法，包括：A data transmission method, including:

用户设备UE接收来自基站的包含小数据传输配置许可SDT CG配置的无线资源控制RRC消息；和The user equipment UE receives a radio resource control RRC message from the base station that includes the SDT CG configuration of the small data transmission configuration permission; and

所述UE发起基于SDT CG方式的数据发送。The UE initiates data transmission based on the SDT CG mode.
根据权利要求1所述的数据传输方法，其中，The data transmission method according to claim 1, wherein:

所述数据传输方法还包括：变更当前所使用的带宽部分BWP为所述SDT CG配置所关联的BWP。The data transmission method further includes: changing the currently used bandwidth part BWP to the BWP associated with the SDTCG configuration.
根据权利要求1所述的数据传输方法，其中，The data transmission method according to claim 1, wherein:

所述数据传输方法还包括：在所述UE结束使用SDT CG资源的上行发送的情况下，变更当前使用的BWP为初始BWP。The data transmission method further includes: when the UE ends uplink transmission using SDT CG resources, changing the currently used BWP to the initial BWP.
根据权利要求2所述的数据传输方法，其中，The data transmission method according to claim 2, wherein:

在所述UE判断当前所使用的BWP不是所述SDT CG配置所关联的BWP时，变更当前所使用的带宽部分BWP为所述SDT CG配置所关联的BWP。When the UE determines that the currently used BWP is not the BWP associated with the SDTCG configuration, the currently used bandwidth part BWP is changed to the BWP associated with the SDTCG configuration.
根据权利要求2或3所述的数据传输方法，其中，The data transmission method according to claim 2 or 3, wherein:

当前所使用的所述BWP是上行BWP和/或下行BWP。The BWP currently used is an uplink BWP and/or a downlink BWP.
根据权利要求3所述的数据传输方法，其中，The data transmission method according to claim 3, wherein:

所述UE结束使用SDT CG资源的上行发送是指所述UE收到所述上行发送的下行响应或所述UE未收到所述上行发送的下行响应或SDT关联的上行时间对齐无效而导致的所述上行发送失败。The UE ending the uplink transmission using SDT CG resources means that the UE receives the downlink response of the uplink transmission or the UE does not receive the downlink response of the uplink transmission or the uplink time alignment associated with the SDT is invalid. The uplink transmission fails.
根据权利要求1～3的任意一项所述的数据传输方法，其中，The data transmission method according to any one of claims 1 to 3, wherein:

所述SDT CG配置包含在所关联的BWP配置中。The SDT CG configuration is included in the associated BWP configuration.
根据权利要求1～3的任意一项所述的数据传输方法，其中，The data transmission method according to any one of claims 1 to 3, wherein:

所述SDT CG中包含BWP标识，所述BWP标识用于指示SDT CG资源所对应的带宽部分BWP。The SDTCG includes a BWP identifier, and the BWP identifier is used to indicate the bandwidth part BWP corresponding to the SDTCG resource.
根据权利要求1～3的任意一项所述的数据传输方法，其中，The data transmission method according to any one of claims 1 to 3, wherein:

所述RRC消息为RRC释放消息，The RRC message is an RRC release message,

在所述UE接收到包含所述SDT CG配置的无线资源控制RRC消息的情况下，所述UE进入无线资源控制非活动RRC_INACTIVE状态，In the case that the UE receives a radio resource control RRC message including the SDTCG configuration, the UE enters the radio resource control inactive RRC_INACTIVE state,

在所述UE发起基于SDT CG方式的数据发送之前，处于所述RRC_INACTIVE状态的UE工作在初始BWP上。Before the UE initiates data transmission based on the SDT CG mode, the UE in the RRC_INACTIVE state works on the initial BWP.
一种用户设备UE，包括：A user equipment UE includes:

处理器；以及Processor; and

存储器，存储有指令；Memory, storing instructions;

其中，所述指令在由所述处理器运行时执行根据权利要求1至9中任一项所述的数据传输方法。Wherein, the instruction executes the data transmission method according to any one of claims 1 to 9 when run by the processor.