WO2011120371A1 - 非周期srs的传输方法和设备 - Google Patents
非周期srs的传输方法和设备 Download PDFInfo
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- WO2011120371A1 WO2011120371A1 PCT/CN2011/071667 CN2011071667W WO2011120371A1 WO 2011120371 A1 WO2011120371 A1 WO 2011120371A1 CN 2011071667 W CN2011071667 W CN 2011071667W WO 2011120371 A1 WO2011120371 A1 WO 2011120371A1
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- aperiodic srs
- srs
- terminal device
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- aperiodic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a method and device for transmitting aperiodic SRS. Background technique
- the detection of the upstream channel is done by a sounding signal.
- the sounding signal is sent by the terminal device in the last symbol of the SRS (Sounding Reference Signal) subframe, and the base station can obtain the uplink channel information, thereby performing resource scheduling and measurement of the uplink transmission, including RI ( Rank Indication, level indication). /PMI (Precoding Matrix Indicator) / CQI (Channel Quality Indication) measurement.
- the SRS in the LTE (Long Term Evolved) system is sent periodically. That is, the terminal device continuously sends the sounding signal in a certain period until it enters the state of no data transmission.
- the parameters of the periodic SRS are all configured through the upper layer, including CS (Cycle Shift), bandwidth, frequency hopping parameters, period and transmission subframe position of the SRS.
- the aperiodic SRS is dynamically activated by the base station. Once activated, the terminal device only sends a one-time sounding signal, but does not periodically send it. Send a signal. Through the aperiodic sounding signal, the base station can obtain the required channel information more flexibly, and close or reduce the transmission of the periodic SRS when conditions permit, thereby reducing the physical resource overhead of the SRS.
- the terminal device can also perform the SRS transmission in a flexible manner.
- the prior art includes configuring an ARS (Downlink Control Information) format (format) in the PDCCH (Physical Downlink Control Channel) to configure parameters of the aperiodic SRS, and other uplink formats. (such as formatO) uses the same length for multiplexing, thus realizing the dynamic configuration of resources.
- the terminal device may perform aperiodic SRS transmission according to the time-frequency resource indicated in the control signaling. At the same time, it can be activated in the UL grant (uplink grant) or DL grant (downlink grant) in only one-bit signaling. Other parameters are configured through the upper layer.
- the embodiments of the present invention provide a method and a device for transmitting aperiodic SRS.
- the base station configures the parameters of the aperiodic SRS through the high layer, and the terminal device performs the SRS transmission according to the configuration, so that the resource scheduling and transmission of the aperiodic SRS can be performed reasonably and effectively.
- an embodiment of the present invention provides a method for transmitting a non-periodic sounding reference signal SRS, including:
- the embodiment of the present invention further provides a terminal device, including: a receiving module, configured to receive an aperiodic SRS configuration parameter sent by a base station by using high layer signaling, and aperiodic SRS activation signaling;
- a sending module configured to: when the receiving module receives the aperiodic sent by the base station
- an embodiment of the present invention further provides a method for transmitting an aperiodic SRS, including:
- the base station sends the aperiodic SRS configuration parameter to the terminal device by using the high layer signaling; if the base station sends the aperiodic SRS activation signaling to the terminal device, the base station receives the terminal device according to the aperiodic SRS configuration parameter.
- an embodiment of the present invention further provides a base station, including:
- a sending module configured to send, to the terminal device, the high layer signaling that includes the aperiodic SRS configuration parameter, and send the aperiodic SRS activation signaling to the terminal device;
- a receiving module configured to: after the sending module sends the aperiodic SRS activation signaling to the terminal device, receive the aperiodic SRS sent by the terminal device according to the aperiodic SRS configuration parameter.
- the embodiment of the invention has the following advantages:
- the signaling overhead is reduced by the high-level quasi-static configuration; the different CS or resource locations of different subframes are allowed to be configured, High flexibility; Allows to send aperiodic SRS in multiple subframes with low delay, and large detection bandwidth allows the terminal device to be flexible in the timing mode, with few restrictions on scheduling.
- FIG. 1 is a schematic flowchart of a method for transmitting a non-periodic SRS on a terminal device side according to an embodiment of the present invention
- FIG. 2 is a schematic flowchart of a method for transmitting a non-periodic SRS on a base station side according to an embodiment of the present invention
- FIG. 3 is a schematic flowchart of a method for transmitting an aperiodic SRS in a specific application scenario according to an embodiment of the present invention
- FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention
- FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention.
- the periodic SRS needs to occupy more physical resources.
- aperiodic SRS transmission is introduced in LTE-A, and a one-time sounding signal is activated by dynamic scheduling.
- the embodiment of the present invention provides a method for transmitting aperiodic SRS.
- the base station configures the parameters of the aperiodic SRS through the high-level signaling, and the terminal device performs the SRS transmission according to the configuration, so that the resource scheduling and transmission of the aperiodic SRS can be performed reasonably and effectively.
- the embodiment of the present invention provides a method for transmitting a non-periodic SRS based on the consideration of the compatible LTE system.
- the embodiment of the present invention provides a method for transmitting aperiodic SRS, including: the base station notifies the terminal device of the aperiodic SRS parameter configuration through high layer signaling, and the terminal device performs flexible aperiodic SRS transmission according to the corresponding parameter configuration.
- FIG. 1 it is a schematic flowchart of a method for transmitting a non-periodic SRS according to an embodiment of the present invention, where the method specifically includes the following steps:
- Step S101 The terminal device receives an aperiodic SRS configuration parameter that is sent by the base station by using the high layer signaling.
- the aperiodic SRS configuration parameter specifically includes:
- the subframe configuration information of the SRS specifically includes a period parameter of the subframe configuration.
- the frequency domain configuration information of the SRS specifically includes one or more of the following information: a frequency domain resource starting position, a transmission bandwidth, a transmission comb, and a frequency domain hopping bandwidth.
- the frequency domain configuration information of the SRS is specifically as follows:
- the aperiodic SRS configuration parameter further includes:
- Step S102 After receiving the aperiodic SRS activation signaling sent by the base station, the terminal device sends an aperiodic SRS to the base station according to the aperiodic SRS configuration parameter, specifically:
- the terminal device After receiving the aperiodic SRS activation signaling, the terminal device sends an aperiodic SRS to the base station in the current subframe according to the aperiodic SRS configuration parameter after a preset number of subframes; or
- the terminal device After the terminal device receives the aperiodic SRS activation signaling, and after a preset number of subframes, according to the aperiodic SRS configuration parameter, one or more aperiodic SRS transmission subframes that are closest to the current subframe. Transmitting aperiodic SRS to the base station.
- the terminal device receives multiple activation commands between two transmission aperiodic SRSs, the terminal device sends a non-only to the base station in the latest aperiodic SRS transmission subframe. Cycle SRS.
- the foregoing process flow is a process flow of the aperiodic SRS transmission method proposed by the embodiment of the present invention on the terminal device side.
- the embodiment of the present invention further provides an implementation flow at the base station side.
- FIG. 2 is a schematic flowchart of a method for transmitting a non-periodic SRS according to an embodiment of the present invention, where the method includes the following steps:
- Step S201 The base station sends the aperiodic SRS configuration parameter to the terminal device by using the high layer signaling.
- the content of the aperiodic SRS configuration parameter is as described in the foregoing step S101, and the description is not repeated here.
- Step S202 If the base station sends an aperiodic SRS activation signal to the terminal device, the base station receives the aperiodic SRS sent by the terminal device according to the aperiodic SRS configuration parameter.
- the execution process of this step is specifically: Receiving, by the base station, the aperiodic SRS sent by the terminal device in the current subframe according to the aperiodic SRS configuration parameter after receiving the aperiodic SRS activation signaling and after a preset number of subframes ; or,
- the periodic SRS transmits the aperiodic SRS transmitted in the subframe.
- the embodiment of the invention has the following advantages:
- the base station performs quasi-static configuration of the aperiodic SRS on the mobile terminal by the upper layer, which reduces the signaling overhead.
- different subframes can be configured with different or the same CS and resource locations, thereby improving
- the flexibility of the system configuration on the other hand, can send aperiodic SRS in multiple subframes, which reduces the system delay and increases the detection bandwidth, and the terminal device can set a more flexible timing mode, which does not generate scheduling. Excessive restrictions.
- the technical solutions proposed in the embodiments of the present invention are described below in conjunction with specific application scenarios.
- FIG. 3 is a schematic flowchart of a method for transmitting a non-periodic SRS in a specific application scenario according to an embodiment of the present disclosure, where the method specifically includes the following steps:
- Step S301 The base station indicates, by using the high layer signaling, the respective non-periodic SRS configuration parameters to each terminal device, and at least includes the following content:
- the indication of parameters such as the period of the subframe configuration may also be included, and the corresponding period may also be pre-agreed without signaling.
- the frequency domain configuration of the SRS specifically includes an indication of a frequency domain resource start location, a transmission bandwidth, a transmission comb, and a frequency domain hopping bandwidth. Sounding frequency domain configuration can be targeted
- Each aperiodic SRS transmission subframe in a certain period is separately configured, and may also be uniformly configured for all aperiodic SRS transmission subframes;
- the method of LTE can be used to indicate the cyclic shift value of the first antenna (port), and the cyclic shift values of other antennas (ports) are obtained by a predefined implicit method.
- the cyclic shift value can be configured separately for each aperiodic SRS transmission subframe in a certain period, or can be uniformly configured for all aperiodic SRS transmission subframes.
- the parameters may also include the following:
- SRS transmission mode configuration which is used to indicate that the terminal device uses a single port mode or a multi-port (antenna) mode to transmit SRS;
- the parameters of the aperiodic SRS and the parameters of the periodic SRS are independently configured, and the possibility that the parameters of the two are the same is not excluded.
- Step S302 The terminal device receives the high layer signaling indication sent by the base station, to obtain an aperiodic SRS configuration parameter.
- Step S303 After receiving the aperiodic SRS activation signaling sent by the base station, the terminal device sends an aperiodic SRS to the base station.
- the specific sending method includes the following situations:
- Case 1 The terminal device receives the activation signaling and sends an aperiodic SRS signal after k subframes.
- the transmission parameters of the aperiodic SRS are obtained according to the method in the above step S201.
- Case 2 After receiving the activation signaling, the terminal device sends the aperiodic SRS in the most recent aperiodic SRS transmission subframes after the k subframes.
- the terminal device may only send aperiodic SRS within the most recent aperiodic SRS transmission subframe.
- the transmission parameters of the aperiodic SRS are also obtained in accordance with the method in the above S201.
- the terminal device transmits only the aperiodic sounding signal in the most recent aperiodic SRS subframe;
- the invention has wide applicability and can be used for the uplink transmission process in the following various scenarios:
- antennas and antenna arrays such as line arrays, polarization arrays;
- Any duplex system such as TDD (Time Division Duplexing) system or FDD (Frequency Division Duplexing) system
- any transmission mode such as SU-MIMO (Single User Multiple Input Multiple Output) Input multiple output), MU-MIMO (Multiple User Multiple Input Multiple Output), CoMP (Coordinated Multiple Point Transmission and Reception).
- the embodiment of the invention has the following advantages:
- the base station performs quasi-static configuration of the aperiodic SRS on the mobile terminal by the upper layer, which reduces the signaling overhead.
- different subframes can be configured with different or the same CS and resource locations, thereby improving
- the flexibility of the system configuration on the other hand, can send aperiodic SRS in multiple subframes, which reduces the system delay and increases the detection bandwidth, and the terminal device can set a more flexible timing mode, which does not generate scheduling. Excessive restrictions.
- the embodiment of the present invention further provides a terminal device, and a schematic structural diagram thereof is shown in FIG. 4, which specifically includes:
- the receiving module 41 is configured to receive aperiodic SRS configuration parameters sent by the base station by using the high layer signaling, and aperiodic SRS activation signaling;
- the aperiodic SRS configuration parameter specifically includes:
- the aperiodic SRS configuration parameter further includes:
- the sending module 42 is configured to: after the receiving module 41 receives the aperiodic SRS activation signaling sent by the base station, send the aperiodic SRS to the base station according to the aperiodic SRS configuration parameter received by the receiving module 41. .
- the terminal device further includes:
- the setting module 43 is configured to set an aperiodic SRS sending policy of the sending module 42, where the aperiodic SRS sending policy includes:
- the terminal device After receiving the aperiodic SRS activation signaling, the terminal device sends an aperiodic SRS to the base station in the current subframe according to the aperiodic SRS configuration parameter after a preset number of subframes; or
- the terminal device After the terminal device receives the aperiodic SRS activation signaling, and after a preset number of subframes, according to the aperiodic SRS configuration parameter, one or more aperiodic SRS transmission subframes that are closest to the current subframe. Transmitting aperiodic SRS to the base station.
- the embodiment of the present invention further provides a base station, and a schematic structural diagram thereof is shown in FIG. 5, including:
- the sending module 51 is configured to send, to the terminal device, high layer signaling that includes the aperiodic SRS configuration parameter, and send the aperiodic SRS activation signaling to the terminal device;
- the receiving module 52 is configured to: after the sending module 51 sends the aperiodic SRS activation signaling to the terminal device, receive the aperiodic SRS sent by the terminal device according to the aperiodic SRS configuration parameter.
- the embodiment of the invention has the following advantages:
- the base station performs quasi-static configuration of the aperiodic SRS on the mobile terminal by the upper layer, which reduces the signaling overhead.
- different subframes can be configured with different or the same CS and resource locations, thereby improving
- the flexibility of the system configuration on the other hand, can send aperiodic SRS in multiple subframes, which reduces the system delay and increases the detection bandwidth, and the terminal device can set a more flexible timing mode, which does not generate scheduling. Excessive restrictions.
- modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or may be correspondingly changed in one or more apparatuses different from the embodiment.
- the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.
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Abstract
本发明实施例公开了一绉非周期SRS徘传输方法和设备,通过应用本发明实施例的技术方案,基站通过高层对移动终端进行非周期SRS的准静态配置,减小了信令开销,一方面,不同子帧可以配置不同或者相同的CS和资源位置,提高了系统配置的灵活性,另一方面,可以在多个子帧发送非周期SRS,降低了系统时延,增大了探测带宽,而终端中可以设置较为灵活的计时方式,不会对调度产生过多的限制。
Description
非周期 SRS的传输方法和设备 本申请要求于 2010年 3 月 31 日提交中国专利局, 申请号为 201010138981.8, 发明名称为 "非周期 SRS的传输方法和设备" 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
本发明涉及通信技术领域, 特别涉及一种非周期 SRS的传输方法 和设备。 背景技术
现有系统中, 上行信道的探测通过 sounding (探测)信号完成。 通过终端设备在 SRS ( Sounding Reference Signal, 探测参考信号)子 帧的最后一个符号发送 sounding信号, 基站可以获得上行的信道信 息, 从而进行上行传输的资源调度和测量, 包括 RI ( Rank Indication, 等级指示 ) /PMI ( Precoding Matrix Indicator, 预编码矩阵指示 ) /CQI ( Channel Quality Indication, 信道质量指示)的测量等。 LTE ( Long Term Evolved, 长期演进)系统中的 SRS是周期性发送的, 即终端设 备会以一定的周期持续发送 sounding信号,直到进入无数据传输的状 态。周期性 SRS的参数都是通过高层配置的, 包括 SRS的 CS ( Cycle Shift, 循环移位) 、 带宽、 跳频参数、 周期和发送子帧位置等。
由于调度周期较长, 调度效率较低, 周期性 SRS经常要占用较 多的物理资源。 特别是在 LTE-A ( Long Term Evolved Advanced, 高 级长期演进 )系统中, UE ( User Equipment, 用户设备, 即终端设备 ) 经常需要同时发送多天线的 SRS, 资源开销更大。 为了提高 SRS资 源利用率,减少 SRS资源的开销, LTE-A系统中引入了非周期的 SRS 传输。
和周期性 SRS不同的是, 非周期 SRS是基站动态激活的, 一旦 激活后终端设备只会发送一次性的 sounding信号,而不会周期性的发
送信号。通过非周期的 sounding信号,基站可以更灵活的获得需要的 信道信息, 在条件允许时关闭或者减少周期性 SRS 的传输, 从而减 少 SRS的物理资源开销。
因为周期 SRS和非周期 SRS都是在小区专用 SRS子帧上传输, 如何进行非周期 SRS 的资源调度以提供足够的物理资源, 并保证和 周期 SRS 不发生资源沖突, 是需要解决的问题。 同时, 终端设备在 接收到基站的参数配置和激活信令后,也可以采用灵活的的方式进行 SRS的传输。
现有技术包括通过在 PDCCH ( Physical Downlink Control Channel, 物理下行控制信道) 中引入 SRS 专用的 DCI ( Downlink Control Information, 下行控制信息) format (格式) 来配置非周期 SRS的参数, 并和其他上行 format (比如 formatO )采用相同的长度 以进行复用, 从而实现资源的动态配置。 终端设备收到基站的控制信 令后, 可以依照控制信令中指示的时频资源进行非周期 SRS传输。 同时, 也可以只用 1比特信令在 UL grant ( Uplink grant, 上行调度确 认)或者 DL grant ( Downlink grant, 下行调度确认) 中激活, 其他 参数通过高层配置。
在实现本发明实施例的过程中,申请人发现现有技术至少存在以 下问题:
在现有技术中, 通过引入 SRS专用的 DCI format来配置非周期 的 SRS,会大大增加 PDCCH的资源开销, 同时, 因为配置比特较少, 可能造成一定的资源浪费。 如果激活用户较多的话, 资源开销将会非 常大, 使得 PDCCH难以承受。 发明内容
本发明实施例提供一种非周期 SRS的传输方法和设备, 基站通过 高层配置非周期 SRS的参数, 终端设备根据配置进行 SRS的传输, 能 够合理有效的进行非周期 SRS的资源调度和传输。
为达到上述目的,本发明实施例一方面提供了一种非周期探测参 考信号 SRS的传输方法, 包括:
终端设备接收基站通过高层信令发送的非周期 SRS配置参数; 当所述终端设备接收到所述基站发送的非周期 SRS激活信令后, 根据所述非周期 SRS配置参数向所述基站发送非周期 SRS。 另一方面, 本发明实施例还提供了一种终端设备, 包括: 接收模块, 用于接收基站通过高层信令发送的非周期 SRS配置参 数, 和非周期 SRS激活信令;
发送模块, 用于当所述接收模块接收到所述基站发送的非周期
SRS激活信令后, 根据所述接收模块所接收到的非周期 SRS配置参数 向所述基站发送非周期 SRS。 另一方面, 本发明实施例还提供了一种非周期 SRS的传输方法, 包括:
基站通过高层信令向终端设备发送非周期 SRS配置参数; 如果所述基站向所述终端设备发送非周期 SRS激活信令, 所述基 站接收所述终端设备根据所述非周期 SRS配置参数所发送的非周期
SRS。 另一方面, 本发明实施例还提供了一种基站, 包括:
发送模块, 用于向终端设备发送包含非周期 SRS配置参数的高层 信令, 和向所述终端设备发送非周期 SRS激活信令;
接收模块, 用于在所述发送模块向所述终端设备发送非周期 SRS 激活信令后, 接收所述终端设备根据所述非周期 SRS配置参数所发送 的非周期 SRS。
与现有技术相比, 本发明实施例具有以下优点:
通过应用本发明实施例的技术方案, 通过高层准静态配置, 减小 了信令开销^艮少; 允许不同子帧配置不同或者相同的 CS和资源位置 ,
灵活性高; 允许在多个子帧发送非周期 SRS, 时延低, 探测带宽大允 许终端设备较为灵活的 timing方式, 对调度的限制很少。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面 将对实施例或现有技术描述中所需要使用的附图作筒单地介绍,显而 易见地, 下面描述中的附图仅仅是本发明的一些实施例, 对于本领域 普通技术人员来讲, 在不付出创造性劳动性的前提下, 还可以根据这 些附图获得其他的附图。
图 1为本发明实施例提出的一种非周期 SRS的传输方法在终端 设备侧的流程示意图;
图 2为本发明实施例提出的一种非周期 SRS的传输方法在基站 侧的流程示意图;
图 3 为本发明实施例提出的一种具体应用场景下的非周期 SRS 的传输方法的流程示意图;
图 4为本发明实施例提出的一种终端设备的结构示意图; 图 5为本发明实施例提出的一种基站的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方 案进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部 分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普 通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
对现有的技术方案, 在 LTE-A系统中, 因为引入了多天线传输, 周期性 SRS需要占用更多的物理资源。 为了提高 SRS资源利用率, 减
少 SRS资源的开销, LTE-A中引入了非周期的 SRS传输, 通过动态调 度来激活一次性的 sounding信号。
如何进行非周期 SRS的资源调度, 终端设备在收到基站的信令后 如何发送非周期 SRS , 都是需要解决的问题。
本发明实施例提出了一种非周期 SRS的传输方法, 基站通过高层 信令配置非周期 SRS的参数, 终端设备根据配置进行 SRS的传输, 能 够合理有效的进行非周期 SRS的资源调度和传输。
为了解决现有技术中存在的问题, 本发明实施例基于兼容 LTE 系统的考虑, 给出一种非周期 SRS的传输方法。
本发明实施例提供了一种非周期 SRS的传输方法, 包括基站通过 高层信令通知终端设备非周期 SRS的参数配置, 以及终端设备根据相 应的参数配置进行灵活的非周期 SRS传输。
如图 1所示, 为本发明实施例提出的一种非周期 SRS的传输方法 的流程示意图, 该方法具体包括以下步骤:
步骤 S101、 终端设备接收基站通过高层信令发送的非周期 SRS配 置参数。
其中, 所述非周期 SRS配置参数, 具体包括:
( 1 ) SRS的子帧配置信息, 具体包括子帧配置的周期参数。
( 2 ) SRS的频域配置信息, 具体包括以下信息中的一项或多项: 频域资源起始位置、 传输带宽、 传输 comb和频域跳频带宽。 在具体的应用场景中, SRS的频域配置信息, 具体为:
针对所述终端设备所对应的一个周期内的各非周期 SRS传输子 帧分别进行配置的信息; 或,
针对所述终端设备所对应的所有非周期 SRS传输子帧统一进行 配置的信息。
( 3 )循环移位值。
需要进一步指出的是, 如果非周期 SRS支持单端口方式的传输, 所述非周期 SRS配置参数, 还包括:
( 4 ) SRS传输方式配置信息。
步骤 S102、 当所述终端设备接收到所述基站发送的非周期 SRS激 活信令后,根据所述非周期 SRS配置参数向所述基站发送非周期 SRS, 具体为:
所述终端设备接收到所述非周期 SRS激活信令, 且经过预设数值 个子帧后, 根据所述非周期 SRS配置参数, 在当前的子帧中向所述基 站发送非周期 SRS; 或,
所述终端设备接收到所述非周期 SRS激活信令, 且经过预设数值 个子帧后, 根据所述非周期 SRS配置参数, 在距离当前子帧最近的一 个或多个非周期 SRS传输子帧中向所述基站发送非周期 SRS。
需要进一步指出的是, 如果在两次传输非周期 SRS之间, 所述终 端设备接收到多次激活指令, 所述终端设备只在最近的非周期 SRS传 输子帧中向所述基站发送一次非周期 SRS。 上述的处理流程为本发明实施例所提出的一种非周期 SRS的传 输方法在终端设备侧的处理流程, 相对应的, 本发明实施例进一步给 出了在基站侧的实施流程。
如图 2所示, 为本发明实施例提出的一种非周期 SRS的传输方法 在基站侧的流程示意图, 该方法具体包括以下步骤:
步骤 S201、基站通过高层信令向终端设备发送非周期 SRS配置参 数。
其中, 非周期 SRS配置参数的内容如前述的步骤 S101中的描述, 在此不再重复说明。
步骤 S202、 如果所述基站向所述终端设备发送非周期 SRS激活信 令, 所述基站接收所述终端设备根据所述非周期 SRS配置参数所发送 的非周期 SRS。
对应上述的步骤 S102中的两种传输策略,本步骤的执行流程具体 为:
所述基站接收所述终端设备在接收到所述非周期 SRS激活信令, 且经过预设数值个子帧后, 根据所述非周期 SRS配置参数, 在当前的 子帧中所发送的非周期 SRS; 或,
所述基站接收所述终端设备在接收到所述非周期 SRS激活信令, 且经过预设数值个子帧后, 根据所述非周期 SRS配置参数, 在距离当 前子帧最近的一个或多个非周期 SRS传输子帧中所发送的非周期 SRS。
与现有技术相比, 本发明实施例具有以下优点:
通过应用本发明实施例的技术方案,基站通过高层对移动终端进 行非周期 SRS的准静态配置, 减小了信令开销, 一方面, 不同子帧可 以配置不同或者相同的 CS和资源位置, 提高了系统配置的灵活性, 另一方面, 可以在多个子帧发送非周期 SRS, 降低了系统时延, 增大 了探测带宽, 而终端设备中可以设置较为灵活的计时方式, 不会对调 度产生过多的限制。 下面, 结合具体的应用场景, 对本发明实施例所提出的技术方案 进行说明。
如图 3所示, 为本发明实施例提出的一种具体应用场景下的非周 期 SRS的传输方法的流程示意图, 该方法具体包括以下步骤:
步骤 S301、基站通过高层信令向各个终端设备指示其各自的非周 期 SRS配置参数, 至少包含如下内容:
( 1 ) SRS的子帧配置
用于指示允许传输非周期 SRS的子帧位置。
其中, 也可以包含子帧配置的周期等参数的指示, 相应的周期也 可以预先约定, 不通过信令指示。
( 2 ) SRS的频域配置
用于指示 sounding发送所占用的频域资源位置。
其中, SRS的频域配置具体包含频域资源起始位置、 传输带宽、 传输 comb、 频域跳频带宽等参数的指示。 sounding频域配置可以针对
某个周期内的各个非周期 SRS传输子帧单独配置, 也可以针对所有非 周期 SRS传输子帧统一配置;
( 3 )循环移位值
用于指示某一个或者多个天线上 SRS序列的循环移位。
例如, 可以重用 LTE的方法指示第一个天线(端口)的循环移位 值, 其他天线(端口)的循环移位值通过预定义的隐性方法得到。 循 环移位值可以针对某个周期内的各个非周期 SRS传输子帧单独配置, 也可以针对所有非周期 SRS传输子帧统一配置。
需要进一步指出的是, 如果非周期 SRS支持单端口方式的传输, 则参数还可能包括如下内容:
( 4 ) SRS传输方式配置, 用于指示终端设备采用单端口方式还 是多端口 (天线 )方式传输 SRS;
在具体的应用场景中, 非周期 SRS的参数与周期 SRS的参数是独 立配置的, 也不排除二者参数相同的可能。
步骤 S302、终端设备接收基站发送的高层信令指示,得到非周期 SRS配置参数。
步骤 S303、 终端设备收到基站发送的非周期 SRS激活信令后, 向 基站发送非周期 SRS。
具体的发送方法包括以下几种情况:
情况一、 终端设备收到激活信令在 k个子帧后发送非周期的 SRS 信号。 非周期 SRS的传输参数按照上述步骤 S201中的方法得到。
情况二、 终端设备收到激活信令经过 k个子帧后, 在最近的若干 个非周期 SRS传输子帧内发送非周期 SRS。
比如, 终端设备可能只在最近的一个非周期 SRS传输子帧内发送 非周期 SRS。非周期 SRS的传输参数也是按照上述 S201中的方法得到。
需要说明的是, 其中的 k为非负整数, 典型值如 k=0或者 4。 具体 取值的变化不会影响本发明的保护范围。
如果在两次传输非周期 SRS之间收到多次激活指令, 则终端设备 只在最近的非周期 SRS子帧发送一次非周期 sounding信号;
本发明具有广泛的适用性,可以用于以下各种场景下的上行传输 过程:
任意天线数量和天线阵列, 比如线阵、 极化阵;
任意双工系统, 比如 TDD ( Time Division Duplexing , 时分双工) 系统或者 FDD ( Frequency Division Duplexing, 频分双工) 系统; 任意发送模式, 比如 SU-MIMO ( Single User Multiple Input Multiple Output, 单用户多输入多输出) 、 MU-MIMO ( Multiple User Multiple Input Multiple Output, 多用户多输入多输出) 、 CoMP ( Coordinated Multiple Point Transmission and Reception , 协作多点传 输) 。
与现有技术相比, 本发明实施例具有以下优点:
通过应用本发明实施例的技术方案,基站通过高层对移动终端进 行非周期 SRS的准静态配置, 减小了信令开销, 一方面, 不同子帧可 以配置不同或者相同的 CS和资源位置, 提高了系统配置的灵活性, 另一方面, 可以在多个子帧发送非周期 SRS, 降低了系统时延, 增大 了探测带宽, 而终端设备中可以设置较为灵活的计时方式, 不会对调 度产生过多的限制。 为了实现本发明实施例的技术方案,本发明实施例还提供了一种 终端设备, 其结构示意图如图 4所示, 具体包括:
接收模块 41 , 用于接收基站通过高层信令发送的非周期 SRS配置 参数, 和非周期 SRS激活信令;
优选的, 所述非周期 SRS配置参数, 具体包括:
SRS的子帧配置信息;
SRS的频域配置信息;
循环移位值。
优选的,如果非周期 SRS支持单端口方式的传输,所述非周期 SRS 配置参数, 还包括:
SRS传输方式配置信息。
发送模块 42,用于当所述接收模块 41接收到所述基站发送的非周 期 SRS激活信令后, 根据所述接收模块 41所接收到的非周期 SRS配置 参数向所述基站发送非周期 SRS。
进一步的, 所述终端设备, 还包括:
设置模块 43 , 用于设置所述发送模块 42的非周期 SRS发送策略, 所述非周期 SRS发送策略包括:
所述终端设备接收到所述非周期 SRS激活信令, 且经过预设数值 个子帧后, 根据所述非周期 SRS配置参数, 在当前的子帧中向所述基 站发送非周期 SRS; 或,
所述终端设备接收到所述非周期 SRS激活信令, 且经过预设数值 个子帧后, 根据所述非周期 SRS配置参数, 在距离当前子帧最近的一 个或多个非周期 SRS传输子帧中向所述基站发送非周期 SRS。 相对应的, 本发明实施例还提供了一种基站, 其结构示意图如图 5所示, 包括:
发送模块 51 , 用于向终端设备发送包含非周期 SRS配置参数的高 层信令, 和向所述终端设备发送非周期 SRS激活信令;
接收模块 52,用于在所述发送模块 51向所述终端设备发送非周期 SRS激活信令后, 接收所述终端设备根据所述非周期 SRS配置参数所 发送的非周期 SRS。
其中, 所述非周期 SRS配置参数的具体内容如前所述, 在此不再 重复说明。
与现有技术相比, 本发明实施例具有以下优点:
通过应用本发明实施例的技术方案,基站通过高层对移动终端进 行非周期 SRS的准静态配置, 减小了信令开销, 一方面, 不同子帧可 以配置不同或者相同的 CS和资源位置, 提高了系统配置的灵活性, 另一方面, 可以在多个子帧发送非周期 SRS, 降低了系统时延, 增大 了探测带宽, 而终端设备中可以设置较为灵活的计时方式, 不会对调 度产生过多的限制。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解 到本发明可借助软件加必需的通用硬件平台的方式来实现, 当然也可 以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解, 软件产品的形式体现出来, 该计算机软件产品存储在一个存储介质 中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服 务器, 或者网络设备等)执行本发明各个实施例所述的方法。
本领域技术人员可以理解附图只是一个优选实施例的示意图,附 图中的模块或流程并不一定是实施本发明所必须的。
本领域技术人员可以理解实施例中的装置中的模块可以按照实 施例描述进行分布于实施例的装置中,也可以进行相应变化位于不同 于本实施例的一个或多个装置中。上述实施例的模块可以合并为一个 模块, 也可以进一步拆分成多个子模块。
上述本发明实施例序号仅仅为了描述, 不代表实施例的优劣。 以上公开的仅为本发明的几个具体实施例, 但是, 本发明并非局 限于此,任何本领域的技术人员能思之的变化都应落入本发明的保护 范围。
Claims
1、 一种非周期探测参考信号 SRS的传输方法, 其特征在于, 包 括:
终端设备接收基站通过高层信令发送的非周期 SRS配置参数; 当所述终端设备接收到所述基站发送的非周期 SRS激活信令后, 根据所述非周期 SRS配置参数向所述基站发送非周期 SRS。
2、 如权利要求 1所述的方法, 其特征在于, 所述非周期 SRS配 置参数, 具体包括:
SRS的子帧配置信息;
SRS的频域配置信息;
循环移位值。
3、 如权利要求 2所述的方法, 其特征在于, 所述 SRS的子帧配 置, 还包括:
子帧配置的周期参数。
4、 如权利要求 2所述的方法, 其特征在于, 所述 SRS的频域配 置信息, 还包括以下信息中的一项或多项:
频域资源起始位置、 传输带宽、 传输 comb和频域跳频带宽。
5、 如权利要求 4所述的方法, 其特征在于, 所述 SRS的频域配 置信息, 具体为:
针对所述终端设备所对应的一个周期内的各非周期 SRS传输子 帧分别进行配置的信息; 或,
针对所述终端设备所对应的所有非周期 SRS传输子帧统一进行 配置的信息。
6、 如权利要求 2所述的方法, 其特征在于, 如果非周期 SRS支 持单端口方式的传输, 所述非周期 SRS配置参数, 还包括:
SRS传输方式配置信息。
7、 如权利要求 1所述的方法, 其特征在于, 当所述终端设备接 收到所述基站发送的非周期 SRS激活信令后, 根据所述非周期 SRS 配置参数向所述基站发送非周期 SRS, 具体为:
所述终端设备接收到所述非周期 SRS 激活信令, 且经过预设数 值个子帧后, 根据所述非周期 SRS 配置参数, 在当前的子帧中向所 述基站发送非周期 SRS; 或,
所述终端设备接收到所述非周期 SRS 激活信令, 且经过预设数 值个子帧后, 根据所述非周期 SRS 配置参数, 在距离当前子帧最近 的一个或多个非周期 SRS传输子帧中向所述基站发送非周期 SRS。
8、 一种终端设备, 其特征在于, 包括:
接收模块, 用于接收基站发送的包含非周期 SRS 配置参数的高 层信令, 和基站发送的非周期 SRS激活信令;
发送模块, 用于当所述接收模块接收到所述基站发送的非周期 SRS激活信令后, 根据所述接收模块所接收到的非周期 SRS配置参 数向所述基站发送非周期 SRS。
9、如权利要求 8所述的终端设备,其特征在于,所述非周期 SRS 配置参数, 具体包括:
SRS的子帧配置信息;
SRS的频域配置信息;
循环移位值。
10、 如权利要求 9 所述的终端设备, 其特征在于, 如果非周期 SRS支持单端口方式的传输, 所述非周期 SRS配置参数, 还包括:
SRS传输方式配置信息。
11、 如权利要求 8所述的终端设备, 其特征在于, 还包括: 设置模块, 用于设置所述发送模块的非周期 SRS发送策略, 所 述非周期 SRS发送策略包括:
所述终端设备接收到所述非周期 SRS 激活信令, 且经过预设数 值个子帧后, 根据所述非周期 SRS 配置参数, 在当前的子帧中向所 述基站发送非周期 SRS; 或,
所述终端设备接收到所述非周期 SRS 激活信令, 且经过预设数 值个子帧后, 根据所述非周期 SRS 配置参数, 在距离当前子帧最近 的一个或多个非周期 SRS传输子帧中向所述基站发送非周期 SRS。
12、 一种非周期探测参考信号 SRS 的传输方法, 其特征在于, 包括:
基站通过高层信令向终端设备发送非周期 SRS配置参数; 如果所述基站向所述终端设备发送非周期 SRS 激活信令, 所述 基站接收所述终端设备根据所述非周期 SRS 配置参数所发送的非周 期 SRS。
13、 如权利要求 12所述的方法, 其特征在于, 所述非周期 SRS 配置参数, 具体包括:
SRS的子帧配置信息;
SRS的频域配置信息;
循环移位值。
14、 如权利要求 13所述的方法, 其特征在于, 所述 SRS的子帧 配置, 还包括:
子帧配置的周期参数。
15、 如权利要求 13所述的方法, 其特征在于, 所述 SRS的频域 配置信息, 还包括以下信息中的一项或多项:
频域资源起始位置、 传输带宽、 传输 comb和频域跳频带宽。
16、 如权利要求 15所述的方法, 其特征在于, 所述 SRS的频域 配置信息, 具体为:
针对所述终端设备所对应的一个周期内的各非周期 SRS传输子 帧分别进行配置的信息; 或,
针对所述终端设备所对应的所有非周期 SRS传输子帧统一进行 配置的信息。
17、 如权利要求 13所述的方法, 其特征在于, 如果非周期 SRS 支持单端口方式的传输, 所述非周期 SRS配置参数, 还包括:
SRS传输方式配置信息。
18、 如权利要求 12所述的方法, 其特征在于, 如果所述基站向 所述终端设备发送非周期 SRS激活信令, 所述基站接收所述终端设 备根据所述非周期 SRS配置参数所发送的非周期 SRS, 具体为: 所述基站接收所述终端设备在接收到所述非周期 SRS激活信令, 且经过预设数值个子帧后, 根据所述非周期 SRS 配置参数, 在当前 的子帧中所发送的非周期 SRS; 或,
所述基站接收所述终端设备在接收到所述非周期 SRS激活信令, 且经过预设数值个子帧后, 根据所述非周期 SRS 配置参数, 在距离 当前子帧最近的一个或多个非周期 SRS传输子帧中所发送的非周期 SRS。
19、 一种基站, 其特征在于, 包括:
发送模块, 用于向终端设备发送包含非周期 SRS 配置参数的高 层信令, 和向所述终端设备发送非周期 SRS激活信令;
接收模块,用于在所述发送模块向所述终端设备发送非周期 SRS 激活信令后, 接收所述终端设备根据所述非周期 SRS 配置参数所发 送的非周期 SRS。
20、 如权利要求 19所述的基站, 其特征在于, 所述非周期 SRS 配置参数, 具体包括:
SRS的子帧配置信息;
SRS的频域配置信息;
循环移位值。
21、 如权利要求 20所述的基站, 其特征在于, 如果非周期 SRS 支持单端口方式的传输, 所述非周期 SRS配置参数, 还包括:
SRS传输方式配置信息。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11761945.2A EP2555573B1 (en) | 2010-03-31 | 2011-03-10 | Method and device for transmitting aperiodic sounding reference signal (srs) |
| US13/638,928 US20130100896A1 (en) | 2010-03-31 | 2011-03-10 | Method and device for transmitting aperiodic sounding reference signal (srs) |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010138981.8 | 2010-03-31 | ||
| CN201010138981.8A CN102083219B (zh) | 2010-03-31 | 2010-03-31 | 非周期srs的传输方法和设备 |
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| US (1) | US20130100896A1 (zh) |
| EP (1) | EP2555573B1 (zh) |
| CN (1) | CN102083219B (zh) |
| WO (1) | WO2011120371A1 (zh) |
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| EP2478646B1 (en) * | 2009-09-16 | 2017-08-16 | LG Electronics Inc. | Apparatus and method for transmitting uplink control information |
| US20150071146A1 (en) * | 2012-02-23 | 2015-03-12 | Broadcom Corporation | Aperiodical Discovery Channel Design for Small RRHS |
| CN104955158B (zh) * | 2014-03-27 | 2019-05-31 | 上海朗帛通信技术有限公司 | 一种非周期srs的方法和装置 |
| WO2016019552A1 (zh) * | 2014-08-07 | 2016-02-11 | 华为技术有限公司 | 传输数据的方法、设备及系统 |
| WO2016060504A1 (ko) * | 2014-10-16 | 2016-04-21 | 엘지전자 주식회사 | 무선랜에서 서로 다른 크기의 대역폭 상에서 무선 자원을 할당하는 방법 및 장치 |
| CN105790905A (zh) * | 2014-12-16 | 2016-07-20 | 北京信威通信技术股份有限公司 | 下行信道状态信息参考信号的发送方法、装置及系统 |
| US10263745B2 (en) | 2015-03-14 | 2019-04-16 | Qualcomm Incorporated | Reciprocal channel sounding reference signal allocation and configuration |
| EP3813464B1 (en) * | 2015-05-14 | 2023-11-29 | Huawei Technologies Co., Ltd. | Methods and apparatus for reception and transmission of sounding reference signal |
| CN106685621A (zh) * | 2015-11-06 | 2017-05-17 | 中兴通讯股份有限公司 | 测量参考信号srs处理方法和装置 |
| US10187187B2 (en) | 2016-02-01 | 2019-01-22 | Ofinno Technologies, Llc | Sounding reference signal configuration in a wireless network |
| CN112073165B (zh) | 2016-03-29 | 2023-08-22 | 本田技研工业株式会社 | 无线网络中的探测参考信号传输 |
| CN108605315B (zh) * | 2016-03-31 | 2021-06-01 | 华为技术有限公司 | 信号传输方法、信号传输控制方法、用户设备及基站 |
| CN110419239B (zh) | 2017-03-20 | 2024-05-07 | Oppo广东移动通信有限公司 | 无线通信方法和设备 |
| CN111314041B (zh) * | 2017-07-05 | 2022-01-04 | Oppo广东移动通信有限公司 | 无线通信方法和设备 |
| CN109511171B (zh) * | 2017-09-15 | 2022-04-12 | 华为技术有限公司 | 一种通信方法及设备 |
| CN110035505B (zh) * | 2018-01-11 | 2021-08-24 | 维沃移动通信有限公司 | 半静态srs资源指示、处理方法、网络侧设备、用户终端 |
| WO2020019100A1 (en) * | 2018-07-21 | 2020-01-30 | Qualcomm Incorporated | Collision between sounding reference signals (srs) and other uplink channels |
| WO2020227889A1 (en) * | 2019-05-13 | 2020-11-19 | Lenovo (Beijing) Limited | Methods and apparatuses for srs configuration and transmission |
| CN116671218B (zh) * | 2021-01-18 | 2025-05-13 | Oppo广东移动通信有限公司 | 配置srs传输资源的方法、终端设备及网络设备 |
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Also Published As
| Publication number | Publication date |
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| CN102083219A (zh) | 2011-06-01 |
| US20130100896A1 (en) | 2013-04-25 |
| EP2555573B1 (en) | 2017-11-29 |
| EP2555573A1 (en) | 2013-02-06 |
| EP2555573A4 (en) | 2013-11-27 |
| CN102083219B (zh) | 2014-04-09 |
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