WO2013044764A1 - 上行信号的发送时间确定方法及设备 - Google Patents

上行信号的发送时间确定方法及设备 Download PDF

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Publication number
WO2013044764A1
WO2013044764A1 PCT/CN2012/081802 CN2012081802W WO2013044764A1 WO 2013044764 A1 WO2013044764 A1 WO 2013044764A1 CN 2012081802 W CN2012081802 W CN 2012081802W WO 2013044764 A1 WO2013044764 A1 WO 2013044764A1
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Prior art keywords
cell
user equipment
reference cell
timing advance
group
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Application number
PCT/CN2012/081802
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English (en)
French (fr)
Inventor
李元杰
尚政
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华为技术有限公司
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Publication of WO2013044764A1 publication Critical patent/WO2013044764A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/004Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a method and a device for determining a transmission timing of an uplink signal. Background technique
  • a user equipment can communicate with a base station through multiple cells.
  • the uplink signals of the user equipment may be transmitted to the base station through different cells, but the transmission paths of different cells may be different.
  • the user equipment may need to pass the relay node to send the uplink signal to the base station through some cells, and may not need to go through the relay node after sending the uplink signal to the base station through other cells.
  • the base station can determine the Timing Advance (TA) value of each cell for the user equipment.
  • TA Timing Advance
  • a set of cells in which uplink resources share the same TA value may be referred to as a TA group, and a TA group may include one or more cells.
  • a plurality of cells corresponding to the user equipment may belong to different TA groups.
  • the embodiment of the invention provides a method and a device for determining the sending time of an uplink signal, which are used to determine the sending time of the uplink signal in the TA group by the user equipment.
  • a method for determining a transmission time of an uplink signal is provided on the one hand, the method includes: determining, by a user equipment, a reference cell in a timing advance group of the user equipment;
  • the user equipment determines, according to the time when the user equipment receives the downlink signal of the reference cell and the TA value of the timing advance group, the sending time of the uplink signal of the timing advance group.
  • Another aspect provides a user equipment, including:
  • a cell determining unit configured to determine a reference cell in the timing advance group of the user equipment, and a time determining unit, according to the time when the user equipment receives the downlink signal of the reference cell and the TA value of the timing advance group, Determining a transmission time of the uplink signal of the timing advance group.
  • a method for determining a transmission time of an uplink signal including:
  • the base station determines a reference cell in the TA group of the user equipment; the base station sends the cell identity information of the reference cell to the user equipment, where the cell identity information is used by the user equipment to determine a reference cell in the TA group.
  • a base station including: a cell determining unit, configured to determine a reference cell in a TA group of the user equipment; and an identifier sending unit, configured to send, to the user equipment, cell identifier information of the reference cell,
  • the cell identity information of the reference cell may be used by the user equipment to determine a reference cell in the TA group.
  • the user equipment determines the reference cell in the TA group of the user equipment by using the user equipment, so that the user equipment can receive the downlink signal of the reference cell and the timing according to the user equipment.
  • the TA value of the group determines the transmission time of the uplink signal of the timing advance group, and solves the problem that the user equipment does not determine how to determine the transmission time of the uplink signal in the TA group in the prior art, thereby ensuring that the user equipment is determined according to the determined
  • the time when the uplink signal transmitted by the transmission time arrives at the base station and the time when the base station expects its arrival time are within an acceptable range.
  • FIG. 1 is a schematic flowchart of a method for determining a transmission time of an uplink signal according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for determining an uplink transmission time of an uplink according to another embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a user equipment according to another embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a base station according to another embodiment of the present invention. detailed description
  • the technical solution of the present invention can be applied to various wireless communication networks, for example, Global System for Mobile Communications (GSM), General Packet Radio Service (GPRS) network, and code division. Code Division Multiple Access (CDMA) network, Wideband Code Division Multiple Access (WCDMA) network, Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) Network, Long Term Evolution (LTE) network or Long Term Evolution (LTE Advanced) (LTE-A) network and subsequent evolution network.
  • GSM Global System for Mobile Communications
  • GPRS General Packet Radio Service
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution Advanced
  • the base station may be a base station (Base Transceiver Station, BTS for short) in a GSM network, a GPRS network or a CDMA network, or a base station (NodeB) in a WCDMA network, or an evolved type in an LTE network or an LTE-A network.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved Node B
  • FIG. 1 is a schematic flowchart of a method for determining a transmission time of an uplink signal according to an embodiment of the present invention. As shown in FIG. 1, the method for determining an uplink signal transmission time in this embodiment may include:
  • the user equipment determines a reference cell in the TA group of the user equipment.
  • the user equipment may determine the reference cell in the TA group according to the indication information sent by the base station.
  • the user equipment may receive the cell identity information sent by the base station to determine the reference cell in the TA group, where the cell identity information may be, for example, a cell index number, and the user equipment may determine, according to the cell identity information, the The reference cell in the TA group.
  • the base station may first determine a reference cell in the TA group, and then send the cell identity information of the reference cell to the user equipment.
  • the base station may determine the reference cell by using the following reference configuration information: using the primary cell in the TA group as the reference cell; or using the cell with the smallest frequency as the reference cell; or, using the cell index number The smallest cell is used as the reference cell; or, the cell that is activated first is used as the reference cell.
  • the reference cell may be used by the user equipment to determine a sending time of an uplink signal in the TA group.
  • the base station may send the cell identifier information by using the high layer signaling
  • the user equipment may receive the cell identifier information of the reference cell that is sent by the base station by using the high layer signaling.
  • the cell identifier information of the reference cell may be carried by an information element (Information Element, referred to as IE) in a Radio Resource Control (RRC) message.
  • the RRC message may be an existing RRC message in the prior art, and the IE message of the existing RRC message may be extended to carry the cell identity information of the reference cell, or the RRC message may be different from the prior art.
  • the existing RRC message For another example: You can use the Media Access Control (MAC) control element (Control The element, referred to as CE, carries the cell identification information of the reference cell.
  • MAC Media Access Control
  • the user equipment may further determine the reference cell in the TA group according to reference configuration information.
  • the reference configuration information may be sent by the base station to the user equipment, for example, the user equipment may receive the reference configuration information that is sent by the base station by using the high layer signaling, for example, the reference configuration may be carried by using an IE in the RRC message.
  • the RRC message may be an RRC message in the prior art, and the IE message may be extended to carry the reference configuration information, or the RRC message may be different from the prior art. RRC message.
  • the reference configuration information may be carried by adding a new MAC CE message.
  • the reference configuration information may also be pre-configured.
  • the reference configuration information may be used to determine the reference cell in the TA group, and the user equipment may determine the reference cell in the TA group according to the reference configuration information.
  • the reference configuration information may include, but is not limited to, the following information: the primary cell in the TA group is used as the reference cell; or the cell corresponding to the first received downlink signal is used as the reference cell; or The cell with the smallest frequency point is used as the reference cell; or the cell with the smallest cell index number is used as the reference cell; or the cell that is activated first is used as the reference cell.
  • the user equipment determines, according to the time when the user equipment receives the downlink signal of the reference cell and the TA value of the TA group, the sending time of the uplink signal of the TA group.
  • the TA group may include one or more cells. When there are multiple cells, the uplink signals of the multiple cells are sent at the same time.
  • the T uplink signal is the transmission time of the uplink signal of the TA group; T1 is the time when the user equipment receives the downlink signal of the reference cell; TA is the TA value of the TA group, in the embodiment of the present invention.
  • the TA value of the TA group may be determined by the base station according to an offset of an uplink signal in the TA group, and then the determined TA value of the TA group is sent to the user equipment,
  • the user equipment may re-determine the new reference cell. For example, if the reference cell determined by the user equipment needs to be deactivated, the reference cell may be recorded as a first cell, and the user equipment may determine, in the TA group of the user equipment, a second different from the first cell. The cell is used as the new reference cell, and can be recorded as the second reference cell, and further determines the uplink signal of the TA group according to the time when the user equipment receives the downlink signal of the second cell and the TA value of the TA group. The new transmission time, the new transmission time may be the same as the T uplink signal, or may be different.
  • the base station may send the cell identity information or the reference configuration information of the second cell to the user equipment by using a deactivation message in the process of deactivating the first cell. That is, the user equipment may receive the cell identity information or the reference configuration information of the second cell that is sent by the base station by using the high layer signaling, where the high layer signaling may be deactivated during the deactivation process of the first cell. Message.
  • the user equipment may also re-determine the new reference cell when other cells need to be activated.
  • the reference cell in the TA group that the user equipment has determined may be recorded as the first cell, and when there is a cell different from the first cell, it may be recorded that the third cell needs to be activated, and the user equipment may determine the new reference cell. It may be recorded as a third reference cell, and the determined third reference cell may be the original first cell or a different cell from the first cell.
  • the user equipment may determine, according to the time when the user equipment receives the downlink signal of the third reference cell and the TA value of the TA group, a new sending time of the uplink signal of the TA group, where the new sending time is Can It may be the same as the T uplink signal, or may be different.
  • the method for determining the sending time of the uplink signal of the third reference cell and the ⁇ group is similar to the method in the method of 101 to 102. For details, refer to related content of 101 102, and details are not described herein again.
  • the base station may send the cell identity information or the reference configuration information of the third reference cell to the user terminal by using an activation message in the process of activating the third cell, that is, the user equipment may And receiving the cell identity information or the reference configuration information of the third reference cell that is sent by the base station by using the high layer signaling, where the high layer signaling may be a message that the third cell is activated during the activation process.
  • the high layer signaling may be a message that the third cell is activated during the activation process.
  • the reference cell in the group of the user equipment is determined by the user equipment, so that the user equipment can receive the downlink signal of the reference cell and the threshold of the group according to the user equipment. Determining the sending time of the uplink signal of the ⁇ group, which solves the problem that the user equipment does not determine how to determine the sending time of the uplink signal in the ⁇ group in the prior art, thereby ensuring that the user equipment sends according to the determined sending time.
  • the time when the uplink signal arrives at the base station and the time the base station expects its arrival time are within an acceptable range.
  • FIG. 2 is a schematic flowchart of a method for determining an uplink signal transmission time according to another embodiment of the present invention. As shown in FIG. 2, the method for determining an uplink signal transmission time in this embodiment may include:
  • the base station determines a reference cell in the group of the user equipment.
  • the base station may determine the reference cell in the group of the user equipment according to the reference configuration information.
  • the reference configuration information may include, but is not limited to, the following information: the primary cell in the group is used as the reference cell; or the cell with the smallest frequency is used as the reference cell; or, the cell index number is used. The smallest cell is used as the reference cell; or, the cell that is activated first is used as the reference cell.
  • the base station sends cell identifier information of the reference cell to the user equipment.
  • the base station may send the cell identity information of the reference cell to the user equipment, where the cell identity information may be used by the user equipment to determine a reference cell in the group, so that the user
  • the device determines the parameter according to the cell identity information of the reference cell.
  • the UE may determine the reference cell according to the cell identity information of the reference cell, and according to the time when the user equipment receives the downlink signal of the reference cell and the timing advance TA value of the TA group, The transmission time of the uplink signal of the TA group is determined.
  • the base station may send the cell identity information of the reference cell by using the high layer signaling.
  • the cell identifier information of the reference cell may be carried by using an IE in the RRC message.
  • the RRC message may be an existing RRC message in the prior art, and the IE message of the existing RRC message may be extended to carry the cell identity information of the reference cell, or the RRC message may be different from the prior art.
  • the existing RRC message may be carried by using a MAC CE message.
  • the base station may re-determine a new reference cell, for example, may be recorded as a second reference cell, and the foregoing
  • the cell information identifier of the second reference cell is sent to the user equipment, and the second reference cell may be included in a deactivation message for the reference cell.
  • the base station may re-determine a new reference cell, for example, may be recorded as a third reference cell, and the third The cell identity information of the reference cell is sent to the user equipment, and the cell identity information of the third reference cell may be included in the activation message.
  • the base station determines the reference cell in the TA group of the user equipment, and sends the cell identity information of the reference cell to the user equipment, so that the user equipment can determine according to the cell identity information of the reference cell. Determining, by the reference cell, the sending time of the uplink signal of the TA group according to the time when the user equipment receives the downlink signal of the reference cell and the TA value of the TA group, which solves the problem in the prior art.
  • the problem of how the user equipment determines the transmission time of the uplink signal in the TA group is provided, thereby ensuring that the error of the time when the uplink signal sent by the user equipment according to the determined transmission time arrives at the base station and the base station expects the arrival time to be within an acceptable range. .
  • FIG. 3 is a schematic structural diagram of a user equipment according to another embodiment of the present invention.
  • the user equipment in this embodiment may include a cell determining unit 31 and a time determining unit 32.
  • the cell determining unit 31 is configured to determine a reference cell in the TA group of the user equipment, and the time determining unit 32 determines, according to the cell determining unit 31, the time when the user equipment receives the downlink signal of the reference cell and the time of the TA group.
  • the TA value determines the transmission time of the uplink signal of the above TA group.
  • the function of the user equipment in the embodiment corresponding to the foregoing FIG. 1 and FIG. 2 can be implemented by the user equipment provided in this embodiment.
  • the user equipment in this embodiment reference may also be made to the foregoing method embodiment.
  • the cell determining unit 31 in this embodiment may receive the cell identity information of the reference cell that is sent by the base station, and determine the reference cell according to the cell identity information of the reference cell.
  • the cell determining unit 31 may receive the cell identity information of the reference cell that is sent by the base station by using the high layer signaling, where the IE in the RRC message may carry the cell identity information of the reference cell, or may also be a MAC.
  • the CE message carries cell identification information of the reference cell.
  • the cell determining unit 31 in this embodiment may further determine the reference cell according to the reference configuration information.
  • the reference configuration information may be the reference configuration information that is sent by the base station by using the high layer signaling, where the high layer signaling may be the IE message carrying the reference configuration information, or may be adding a new MAC CE message. Carrying the reference configuration information. Or the reference configuration information may be pre-configured.
  • the reference configuration information may be Including but not limited to the following information:
  • the cell corresponding to the first downlink signal is received as the reference cell;
  • the cell with the smallest cell index number is used as the reference cell;
  • the cell that is activated first is used as the reference cell.
  • the cell determining unit 31 in this embodiment may be further configured to: if the reference cell needs to be deactivated, determine a second reference cell in the TA group of the user equipment, for example, as a second reference cell.
  • the time determining unit 32 may further determine, according to the time that the user equipment receives the downlink signal of the second reference cell and the TA value of the TA group determined by the cell determining unit 31, determining the TA group.
  • the new transmission time of the uplink signal may be the same as or different from the T uplink signal.
  • the cell determining unit 31 in this embodiment may further determine that a cell that is different from the reference cell needs to be activated, and the user equipment determines a third reference cell in the TA group of the user equipment, for example, It is recorded as a third reference cell; correspondingly, the time determining unit 32 may further determine, according to the determining, by the cell determining unit 31, the time when the user equipment receives the downlink signal of the third reference cell and the TA value of the TA group, Determining a new transmission time of the uplink signal of the TA group, where the new transmission time may be the same as or different from the T uplink signal.
  • the cell determining unit 31 and the time determining unit 32 may be processors, may be the same processor, or may be different processors.
  • a chip is further provided, where the chip may be used to implement the reference cell in the TA group for determining the user equipment, and receive the reference according to the determined user equipment.
  • the time of the downlink signal of the cell and the TA value of the TA group determine the transmission time of the uplink signal of the TA group.
  • the information received by the user equipment may be received by a receiver of the user equipment.
  • the user equipment determines, in the TA group of the user equipment, by the cell determining unit.
  • the reference cell is configured to enable the time determining unit to determine, according to the time that the user equipment receives the downlink signal of the reference cell and the TA value of the TA group determined by the cell determining unit, the sending time of the uplink signal of the TA group,
  • the problem that the user equipment determines the transmission time of the uplink signal in the TA group is not provided in the prior art, thereby ensuring that the uplink signal sent by the user equipment according to the determined transmission time arrives at the base station and the base station expects its arrival time. The error is within the acceptable range.
  • FIG. 4 is a schematic structural diagram of a base station according to another embodiment of the present invention.
  • the base station in this embodiment may include a cell determining unit 41 and an identifier sending unit 42.
  • the cell determining unit 41 is configured to determine a reference cell in the TA group of the user equipment
  • the identifier sending unit 42 is configured to send the cell identity information of the reference cell to the user equipment, where the cell identity information of the reference cell can be used. Determining the reference cell at the user equipment.
  • the user equipment may be further configured to determine, according to the time when the user equipment receives the downlink signal of the reference cell and the timing advance TA value of the TA group, the sending time of the uplink signal of the TA group.
  • the functions of the base station in the embodiment corresponding to the foregoing FIG. 1 and FIG. 2 can be implemented by the base station provided in this embodiment.
  • the cell determining unit 41 in this embodiment may specifically determine a reference cell in the TA group of the user equipment according to the reference configuration information.
  • the reference configuration information may include, but is not limited to, the following information: the primary cell in the TA group is used as the reference cell; or the cell with the smallest frequency point is used as the reference cell; or, the cell index number is used. The smallest cell is used as the reference cell; or, the cell that is activated first is used as the reference cell.
  • the identifier sending unit 42 may specifically send the cell identifier information of the reference cell by using high layer signaling.
  • the cell identifier information of the reference cell may be carried by an IE in the RRC message.
  • the RRC message may be an existing RRC message in the prior art, and the IE message of the existing RRC message may be extended to carry the cell identity information of the reference cell, or the RRC message may be different from the prior art.
  • the cell identity information of the reference cell may be carried by using a MAC CE message.
  • the cell determining unit 41 may be a processor, and may be the same processor.
  • a chip is further provided, where the chip may be used to implement the reference cell in the TA group for determining the user equipment.
  • the identification transmitting unit 42 may also be a transmitter.
  • the base station determines, by the cell determining unit, the reference cell in the TA group of the user equipment, and the identifier sending unit sends the cell identity information of the reference cell to the user equipment, so that the user equipment can Determining, by the cell identifier information of the reference cell, the reference cell, and determining, according to the time when the user equipment receives the downlink signal of the reference cell and the TA value of the TA group, the sending time of the uplink signal of the TA group,
  • the problem that the user equipment determines the transmission time of the uplink signal in the TA group is not provided in the prior art, thereby ensuring that the uplink signal sent by the user equipment according to the determined transmission time arrives at the base station and the base station expects its arrival time. The error is within the acceptable range.
  • the embodiment of the present invention further provides a communication system, which may include the user equipment in the embodiment shown in FIG. 3 or the base station in the embodiment shown in FIG. 4, and the communication system may implement downlink as shown in FIG. 1 And the method provided by the embodiment shown in FIG. 2.
  • a communication system which may include the user equipment in the embodiment shown in FIG. 3 or the base station in the embodiment shown in FIG. 4, and the communication system may implement downlink as shown in FIG. 1 And the method provided by the embodiment shown in FIG. 2.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a hardware plus software functional unit.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional units are stored in a storage medium and include a number of steps for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods of the various embodiments of the present invention.
  • the foregoing storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. Medium.

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Abstract

本发明实施例提供一种上行信号的发送时刻时间确定方法及用户设备,方法包括:用户设备确定该用户设备的定时提前组中的参考小区;所述用户设备根据所述用户设备接收到所述参考小区的下行信号的时间和所述定时提前组的 TA值,确定所述定时提前组的上行信号的发送时间。本发明实施例解决了现有技术中没有给出用户设备如何确定 TA组的上行信号的发送时间的问题,从而保证了用户设备根据确定的发送时间发送的上行信号到达基站的时间与基站期望其到达时间的误差在可接受范围之内。

Description

上行信号的发送时间确定方法及设备
本申请要求于 2011 年 09 月 29 日提交中国专利局、 申请号为 201110295427.5、发明名称为"上行信号的发送时间确定方法及设备"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
本发明实施例涉及通信技术, 尤其涉及一种上行信号的发送时间 ( transmitting timing )确定方法及设备。 背景技术
在具有载波聚合 ( Carrier Aggregation, 简称 CA )特性的无线通信*** 中, 用户设备可以通过多个小区与基站进行通信。 用户设备的上行信号可 以通过不同小区发送到基站,但是不同小区的传输路径可能不相同。例如: 用户设备通过一些小区向基站发送上行信号可能需要经过中继节点, 而通 过另一些小区向基站发送上行信号则可能不需要经过中继节点。 为了保证 基站服务的用户设备通过不同小区发送的上行信号能够同步到达基站, 基 站可以为用户设备确定每个小区的定时提前(Timing Advance, 简称 TA ) 值。 通常情况下, 可以将上行资源共享相同 TA值的小区的集合称为 TA组 ( TA group ), 一个 TA组可以包括一个或多个小区。 用户设备对应的多个 小区可以属于不同的 TA组。
然而,现有技术中没有给出用户设备如何确定 TA组中的上行信号的发 送时间。 发明内容
本发明实施例提供一种上行信号的发送时间确定方法及设备, 用以实 现用户设备确定 TA组中的上行信号的发送时间。 一方面提供了一种上行信号的发送时间确定方法, 包括: 用户设备确定该用户设备的定时提前组中的参考小区;
所述用户设备根据所述用户设备接收到所述参考小区的下行信号的时 间和所述定时提前组的 TA值,确定所述定时提前组的上行信号的发送时间。
另一方面提供了一种用户设备, 包括:
小区确定单元, 用于确定所述用户设备的定时提前组中的参考小区; 时间确定单元, 根据所述用户设备接收到所述参考小区的下行信号的 时间和所述定时提前组的 TA值,确定所述定时提前组的上行信号的发送时 间。
又一方面提供了一种上行信号的发送时间确定方法, 包括:
基站确定用户设备的 TA组中的参考小区;所述基站向所述用户设备发 送所述参考小区的小区标识信息, 所述小区标识信息用于所述用户设备确 定 TA组中的参考小区。
再一方面, 提供了一种基站, 包括: 小区确定单元, 用于确定用户设 备的 TA组中的参考小区; 标识发送单元, 用于向所述用户设备发送所述参 考小区的小区标识信息, 所述参考小区的小区标识信息可以用于所述用户 设备确定所述 TA组中的参考小区。
由上述技术方案可知, 本发明实施例通过用户设备确定该用户设备的 TA组中的参考小区, 使得上述用户设备能够根据所述用户设备接收到上述 参考小区的下行信号的时间和所述定时提前组的 TA值,确定上述定时提前 组的上行信号的发送时间, 解决了现有技术中没有给出用户设备如何确定 TA组中的上行信号的发送时间的问题, 从而保证了用户设备根据确定的发 送时间发送的上行信号到达基站的时间与基站期望其到达时间的误差在可 接受范围之内。 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一简单地介绍, 显而易见地, 下面描述中的附图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 为本发明一实施例提供的上行信号的发送时间确定方法的流程示 意图;
图 2为本发明另一实施例提供的上行信号的发送时间确定方法的流程 示意图;
图 3为本发明另一实施例提供的用户设备的结构示意图;
图 4为本发明另一实施例提供的基站的结构示意图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 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。
本发明的技术方案, 可以应用于各种无线通信网络, 例如: 全球移动 通信***( Global System for Mobile Communications , 简称 GSM )、 通用分 组无线业务( General Packet Radio Service,简称 GPRS )网络、码分多址( Code Division Multiple Access,简称 CDMA )网络、宽带码分多址( Wideband Code Division Multiple Access , 简称 WCDMA ) 网络、 时分同步码分多址( Time Division- Synchronous Code Division Multiple Access, 简称 TD-SCDMA ) 网 络、长期演进( Long Term Evolution, 简称 LTE )网络或长期演进高级 ( LTE Advanced, 简称 LTE-A ) 网络以及后续演进网络等。 术语 "网络" 可以和 "***" 相互替换。 其中基站可以是 GSM网络、 GPRS网络或 CDMA网络中的基站(Base Transceiver Station,简称 BTS ),也可以是 WCDMA网络中的基站( NodeB ), 还可以是 LTE网络或 LTE- A网络中的演进型基站 ( Evolved Node B , 简称 eNB )。
图 1 为本发明一实施例提供的上行信号的发送时间确定方法的流程示 意图, 如图 1所示, 本实施例的上行信号的发送时间确定方法可以包括:
101、 用户设备确定该用户设备的 TA组中的参考小区;
在本发明实施例中, 可选地, 所述用户设备可以根据基站发送的指示 信息确定所述 TA组中所述参考小区。所述用户设备可以接收基站发送的小 区标识信息确定所述 TA组中所述参考小区,所述小区标识信息例如可以为 小区索引号等,所述用户设备可以根据所述小区标识信息确定所述 TA组中 的所述参考小区。基站可以首先确定所述 TA组中的参考小区, 然后将所述 参考小区的小区标识信息发送给所述用户设备。 例如, 基站可以通过以下 参考配置信息确定所述参考小区:以所述 TA组中的主小区作为所述参考小 区; 或者, 以频点最小的小区作为所述参考小区; 或者, 以小区索引号最 小的小区作为所述参考小区;或者,以最先激活的小区作为所述参考小区。 在本发明实施例中,所述参考小区可以用于所述用户设备确定所述 TA组中 上行信号的发送时间。
在本发明实施例中, 基站可以通过高层信令发送所述小区标识信息, 所述用户设备可以接收基站通过高层信令发送的所述参考小区的小区标识 信息。 例如: 可以通过无线资源控制(Radio Resource Control, 简称 RRC ) 消息中的信息元素(Information Element, 简称 IE )携带所述参考小区的小 区标识信息。 所述 RRC消息可以为现有技术中已有的 RRC消息, 通过对 已有的 RRC消息的 IE进行扩展携带所述参考小区的小区标识信息, 或者 所述 RRC消息也可以是不同于现有技术中已有的 RRC消息。 再例如: 可 以通过媒体访问控制( Media Access Control, 简称 MAC )控制元素( Control Element, 简称 CE ) 消息携带所述参考小区的小区标识信息。
在本发明实施例中, 可选地, 所述用户设备还可以根据参考配置信息 确定所述 TA组中的所述参考小区。所述参考配置信息可以由基站发送给所 述用户设备, 例如: 所述用户设备可以接收基站通过高层信令发送的所述 参考配置信息,例如:可以通过 RRC消息中的 IE携带所述参考配置信息, 所述 RRC消息可以为现有技术中的 RRC消息, 通过对已有的 RRC消息的 IE进行扩展携带所述参考配置信息,或者所述 RRC消息也可以为不同于现 有技术中已有的 RRC消息。再例如: 可以通过增加新的 MAC CE消息携带 所述参考配置信息。 或者, 所述参考配置信息还可以预先配置得到。
所述参考配置信息可以用于确定所述 TA组中的所述参考小区,用户设 备可以根据所述参考配置信息确定所述 TA组中的所述参考小区。所述参考 配置信息可以包括但不限于下列信息:以所述 TA组中的主小区作为所述参 考小区; 或者, 以最先接收到的下行信号对应的小区作为所述参考小区; 或者, 以频点最小的小区作为所述参考小区; 或者, 以小区索引号最小的 小区作为所述参考小区; 或者, 以最先激活的小区作为所述参考小区。
102、 所述用户设备根据所述用户设备接收到所述参考小区的下行信号 的时间和所述 TA组的 TA值, 确定所述 TA组的上行信号的发送时间。
其中, TA组中可以包括一个或多个小区, 当有多个小区时, 多个小区 的上行信号的发送时间相同。 用户设备可以根据所述用户设备接收到所述 参考小区的下行信号的时间和所述 TA组的 TA值, 确定所述 TA组的上行 信号的发送时间 T上行信号。 例如, 所述用户设备可以根据公式 T上行信 号=丁1+ ( TA 16+NTA offset ) Ts, 确定所述 TA组的上行信号的发送时 间。 其中, T上行信号为所述 TA组的上行信号的发送时间; T1为所述用 户设备接收到所述参考小区的下行信号的时间; TA为所述 TA组的 TA值, 在本发明实施例中, 所述 TA组的 TA值可以由所述基站根据 TA组中上行 信号的偏移确定, 然后将确定的所述 TA组的 TA值发送给所述用户设备, 例如, 所述 TA组的 TA值的取值范围可以为 [0 , 1282] ; 对于频分双工 ( Frequency Division Duplex, 简称 FDD )***, NTA offset=0, 对于时分双 工 ( Time Division Duplex, 简称 TDD )***, NTA offset=624; Ts=l/ ( 15000 x 2048 ), 单位为秒(s )。
本发明实施例中, 若用户设备确定的参考小区需要被去激活, 则用户 设备可以重新确定新参考小区。 例如, 如果所述用户设备确定的参考小区 需要去激活, 该参考小区可以记为第一小区, 所述用户设备则可以确定该 用户设备的 TA组中的不同于所述第一小区的第二小区作为新参考小区,可 以记作第二参考小区, 并进一步根据所述用户设备接收到所述第二小区的 下行信号的时间和所述 TA组的 TA值, 确定所述 TA组的上行信号的新发 送时间, 所述新发送时间可以和所述 T上行信号相同, 也可以不同。 用户 设备确定所述第二小区以及 TA组的上行信号的发送时间的具体方法与 101-102中的方法类似,详细描述可以参见 101~102的相关内容,此处不再 赘述。 优选地, 基站可以在对所述第一小区进行去激活的过程中, 通过去 激活消息将所述第二小区的小区标识信息或者参考配置信息发送给所述用 户设备。 也即所述用户设备可以接收基站通过高层信令发送的所述第二小 区的小区标识信息或者参考配置信息, 其中的高层信令可以为对所述第一 小区进行去激活过程中的去激活的消息。
本发明实施例中, 若用户设备已经确定所述 TA组中的参考小区, 当有 其它的小区需要激活, 则用户设备也可以重新确定新参考小区。 例如, 所 述用户设备已经确定的 TA组中的参考小区可以记为第一小区,当有不同于 所述第一小区的小区, 可以记作第三小区需要激活, 用户设备可以确定新 参考小区, 可以记作第三参考小区, 确定得到的第三参考小区可以是原来 的所述第一小区, 也可以是与所述第一小区不同的小区。 所述用户设备可 以根据所述用户设备接收到所述第三参考小区的下行信号的时间和所述 TA 组的 TA值, 确定所述 TA组的上行信号的新发送时间, 所述新发送时间可 以和所述 T上行信号相同, 也可以不同。 具体地, 用户设备确定所述第三 参考小区以及 ΤΑ组的上行信号的发送时间的具体方法与 101~102中的方法 类似, 详细描述可以参见 101 102 的相关内容, 此处不再赘述。 优选地, 基站可以在对所述第三小区进行激活的过程中, 通过激活消息将所述第三 参考小区的小区标识信息或者参考配置信息发送给所述用户终端, 也即所 述用户设备可以接收基站通过高层信令发送的所述第三参考小区的小区标 识信息或者参考配置信息, 其中的高层信令可以为对所述第三小区进行激 活过程中的激活的消息。
本实施例中, 通过用户设备确定该用户设备的 ΤΑ组中的参考小区, 使 得所述用户设备能够根据所述用户设备接收到所述参考小区的下行信号的 时间和所述 ΤΑ组的 ΤΑ值, 确定所述 ΤΑ组的上行信号的发送时间, 解决 了现有技术中没有给出用户设备如何确定 ΤΑ组中的上行信号的发送时间 的问题, 从而保证了用户设备根据确定的发送时间发送的上行信号到达基 站的时间与基站期望其到达时间的误差在可接受范围之内。
图 2为本发明另一实施例提供的上行信号的发送时间确定方法的流程 示意图,如图 2所示,本实施例的上行信号的发送时间确定方法可以包括:
201、 基站确定用户设备的 ΤΑ组中的参考小区;
可选地,基站可以根据参考配置信息确定用户设备的 ΤΑ组中的参考小 区。 其中, 所述参考配置信息可以包括但不限于下列信息: 以所述 ΤΑ组中 的主小区作为所述参考小区;或者,以频点最小的小区作为所述参考小区; 或者, 以小区索引号最小的小区作为所述参考小区; 或者, 以最先激活的 小区作为所述参考小区。
202、 所述基站向所述用户设备发送所述参考小区的小区标识信息。 在本实施例中, 所述基站可以向所述用户设备发送所述参考小区的小 区标识信息,所述小区标识信息可以用于所述用户设备确定 ΤΑ组中的参考 小区, 以使得所述用户设备根据所述参考小区的小区标识信息确定所述参 考小区,所述 UE可以根据所述参考小区的小区标识信息确定所述参考小区, 并根据所述用户设备接收到所述参考小区的下行信号的时间和所述 TA组 的定时提前 TA值, 确定所述 TA组的上行信号的发送时间。
可选地, 在本发明实施例中, 基站可以通过高层信令发送所述参考小 区的小区标识信息。 例如: 可以通过 RRC消息中的 IE携带所述参考小区 的小区标识信息。 所述 RRC消息可以为现有技术中已有的 RRC消息, 通 过对已有的 RRC消息的 IE进行扩展携带所述参考小区的小区标识信息, 或者所述 RRC消息也可以是不同于现有技术中已有的 RRC消息。再例如: 可以通过 MAC CE消息携带所述参考小区的小区标识信息。
在本发明实施例中,所述用户设备确定的所述 TA组中的参考小区需要 去激活, 则所述基站可以重新确定新参考小区, 例如可以记作第二参考小 区, 并将所述第二参考小区的小区信息标识发送给所述用户设备, 所述第 二参考小区可以包括在对所述参考小区的去激活消息中。若所述 TA组中有 小区需要激活, 或者有小区需要加入所述 TA组并进行激活, 则所述基站可 以重新确定新参考小区, 例如可以记作第三参考小区, 并将所述第三参考 小区的小区标识信息发送给所述用户设备, 所述第三参考小区的小区标识 信息可以包括在激活消息中。
本实施例中, 通过基站确定用户设备的 TA组中的参考小区, 并向所述 用户设备发送所述参考小区的小区标识信息, 使得所述用户设备能够根据 所述参考小区的小区标识信息确定所述参考小区, 并根据所述用户设备接 收到所述参考小区的下行信号的时间和所述 TA组的 TA值, 确定所述 TA 组的上行信号的发送时间, 解决了现有技术中没有给出用户设备如何确定 TA组中的上行信号的发送时间的问题, 从而保证了用户设备根据确定的发 送时间发送的上行信号到达基站的时间与基站期望其到达时间的误差在可 接受范围之内。
需要说明的是: 对于前述的各方法实施例, 为了简单描述, 故将其都 表述为一系列的动作组合, 但是本领域技术人员应该知悉, 本发明并不受 所描述的动作顺序的限制, 因为依据本发明, 某些步骤可以釆用其他顺序 或者同时进行。 其次, 本领域技术人员也应该知悉, 说明书中所描述的实 施例均属于优选实施例, 所涉及的动作和模块并不一定是本发明所必须的。
在所述实施例中, 对各个实施例的描述都各有侧重, 某个实施例中没 有详述的部分, 可以参见其他实施例的相关描述。
图 3为本发明另一实施例提供的用户设备的结构示意图,如图 3所示, 本实施例的用户设备可以包括小区确定单元 31和时间确定单元 32。 其中, 小区确定单元 31用于确定上述用户设备的 TA组中的参考小区; 时间确定 单元 32根据小区确定单元 31确定的所述用户设备接收到上述参考小区的 下行信号的时间和上述 TA组的 TA值, 确定上述 TA组的上行信号的发送 时间。
上述图 1和图 2对应的实施例中用户设备的功能可以由本实施例提供 的用户设备实现, 本实施例中的用户设备的实现也可以参见上述方法实施 例。
可选地, 本实施例中的小区确定单元 31可以接收基站发送的所述参考 小区的小区标识信息, 并根据所述参考小区的小区标识信息确定所述参考 小区。 例如: 小区确定单元 31可以接收基站通过高层信令发送的所述参考 小区的小区标识信息, 其中, 高层信令可以 RRC消息中的 IE携带所述参 考小区的小区标识信息, 或者也可以为 MAC CE消息携带所述参考小区的 小区标识信息。
可选地,本实施例中的小区确定单元 31具体还可以根据参考配置信息, 确定所述参考小区。 所述参考配置信息可以是所述基站通过高层信令发送 的所述参考配置信息, 其中, 高层信令可以为 RRC消息中 IE携带所述参 考配置信息,或者也可以为增加新的 MAC CE消息携带所述参考配置信息。 或者所述参考配置信息可以是预先配置的。 其中, 所述参考配置信息可以 包括但不限于下列信息:
以所述 TA组中的主小区作为所述参考小区; 或者
以最先接收到下行信号对应的小区作为所述参考小区; 或者
以频点最小的小区作为所述参考小区; 或者
以小区索引号最小的小区作为所述参考小区; 或者
以最先激活的小区作为所述参考小区。
可选地, 本实施例中的小区确定单元 31还可以进一步用于若所述参考 小区需要去激活, 确定所述用户设备的 TA组中的第二参考小区, 例如可以 记作第二参考小区; 相应地, 时间确定单元 32还可以进一步根据小区确定 单元 31确定的所述用户设备接收到所述第二参考小区的下行信号的时间和 所述 TA组的 TA值, 确定所述 TA组的上行信号的新发送时间, 所述新发 送时间可以和所述 T上行信号相同, 也可以不同。
可选地, 本实施例中的小区确定单元 31还可以进一步若有不同于所述 参考小区的小区需要激活,所述用户设备确定所述用户设备的 TA组中的第 三参考小区, 例如可以记作第三参考小区; 相应地, 时间确定单元 32还可 以进一步根据小区确定单元 31确定的所述用户设备接收到所述第三参考小 区的下行信号的时间和所述 TA组的 TA值, 确定所述 TA组的上行信号的 新发送时间, 所述新发送时间可以和所述 T上行信号相同, 也可以不同。
本发明实施例中, 所述小区确定单元 31和时间确定单元 32可以是处 理器, 可以同一个处理器, 也可以是不同的处理器。 在本发明实施例中, 还提供一种芯片, 所述芯片可以用于实现所述用于确定所述用户设备的 TA 组中的参考小区, 并根据确定的所述用户设备接收到所述参考小区的下行 信号的时间和所述 TA组的 TA值 ,确定所述 TA组的上行信号的发送时间。
在本发明实施例中, 所述用户设备接收的信息可以通过用户设备的接 收器进行接收。
本实施例中,用户设备通过小区确定单元确定该用户设备的 TA组中的 参考小区, 使得时间确定单元能够根据小区确定单元确定的所述用户设备 接收到所述参考小区的下行信号的时间和所述 TA组的 TA值,确定所述 TA 组的上行信号的发送时间, 解决了现有技术中没有给出用户设备如何确定 TA组中的上行信号的发送时间的问题, 从而保证了用户设备根据确定的发 送时间发送的上行信号到达基站的时间与基站期望其到达时间的误差在可 接受范围之内。
图 4为本发明另一实施例提供的基站的结构示意图, 如图 4所示, 本 实施例的基站可以包括小区确定单元 41和标识发送单元 42。 其中, 小区确 定单元 41用于确定用户设备的 TA组中的参考小区;标识发送单元 42用于 向所述用户设备发送所述参考小区的小区标识信息, 所述参考小区的小区 标识信息可以用于所述用户设备确定所述参考小区。 可以使得所述用户设 备进一步根据所述用户设备接收到所述参考小区的下行信号的时间和所述 TA组的定时提前 TA值, 确定所述 TA组的上行信号的发送时间。
上述图 1和图 2对应的实施例中基站的功能可以由本实施例提供的基 站实现。
可选地, 本实施例中的小区确定单元 41具体可以根据参考配置信息确 定用户设备的 TA组中的参考小区。 其中, 所述参考配置信息可以包括但不 限于下列信息: 以所述 TA组中的主小区作为所述参考小区; 或者, 以频点 最小的小区作为所述参考小区; 或者, 以小区索引号最小的小区作为所述 参考小区; 或者, 以最先激活的小区作为所述参考小区。
可选地, 在本发明实施例中, 标识发送单元 42具体可以通过高层信令 发送所述参考小区的小区标识信息。 例如: 可以通过 RRC消息中的 IE携 带所述参考小区的小区标识信息。 所述 RRC消息可以为现有技术中已有的 RRC消息, 通过对已有的 RRC消息的 IE进行扩展携带所述参考小区的小 区标识信息, 或者所述 RRC 消息也可以是不同于现有技术中已有的 RRC 消息。再例如:可以通过 MAC CE消息携带所述参考小区的小区标识信息。 在本实施例中,本发明实施例中,所述小区确定单元 41可以是处理器, 可以同一个处理器。 在本发明实施例中, 还提供一种芯片, 所述芯片可以 用于实现所述用于确定所述用户设备的 TA组中的参考小区。所述标识发送 单元 42也可以是一种发射器。
本实施例中 ,基站通过小区确定单元确定用户设备的 TA组中的参考小 区, 并由标识发送单元向所述用户设备发送所述参考小区的小区标识信息, 使得所述用户设备能够根据所述参考小区的小区标识信息确定所述参考小 区, 并根据所述用户设备接收到所述参考小区的下行信号的时间和所述 TA 组的 TA值, 确定所述 TA组的上行信号的发送时间, 解决了现有技术中没 有给出用户设备如何确定 TA组中的上行信号的发送时间的问题,从而保证 了用户设备根据确定的发送时间发送的上行信号到达基站的时间与基站期 望其到达时间的误差在可接受范围之内。
本发明实施例还提供了一种通信***,该通信***可以包括如上述图 3 所示实施例中的用户设备或上述图 4 所示实施例中的基站, 该通信***可 以实现下行上述图 1和图 2所示实施例提供的方法。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 上述 描述的***, 装置和单元的具体工作过程, 可以参考前述方法实施例中的 对应过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的***, 装置 和方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅 是示意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实 现时可以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成 到另一个***, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论 的相互之间的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单 元的间接耦合或通信连接, 可以是电性, 机械或其它的形式。 作为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地 方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的 部分或者全部单元来实现本实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在 一个单元中。 上述集成的单元既可以釆用硬件的形式实现, 也可以釆用硬 件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元, 可以存储在一个计算 机可读取存储介质中。 上述软件功能单元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方法的部分步骤。 而前述的存储介质 包括: U盘、 移动硬盘、 只读存储器 (Read-Only Memory, 简称 ROM )、 随机存取存储器 ( Random Access Memory, 简称 RAM )、 磁碟或者光盘等 各种可以存储程序代码的介质。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解: 其依然可以对前述各实施例所记载的技术方案进行修 改, 或者对其中部分技术特征进行等同替换; 而这些修改或者替换, 并不 使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims

权利要求
1、 一种上行信号的发送时间确定方法, 其特征在于, 包括: 用户设备确定该用户设备的定时提前组中的参考小区;
所述用户设备根据所述用户设备接收到所述参考小区的下行信号的时 间和所述定时提前组的定时提前 TA值,确定所述定时提前组的上行信号的 发送时间。
2、 根据权利要求 1所述的方法, 其特征在于, 所述用户设备确定该用 户设备的定时提前组中的参考小区包括:
所述用户设备接收基站发送的所述参考小区的小区标识信息, 并根据 所述参考小区的小区标识信息确定所述参考小区; 或者
所述用户设备根据参考配置信息, 确定所述参考小区。
3、 根据权利要求 2所述的方法, 其特征在于, 所述用户设备接收基站 发送的所述参考小区的小区标识信息, 包括:
所述用户设备接收基站通过高层信令发送的所述参考小区的小区标识 信息。
4、 根据权利要求 2所述的方法, 其特征在于, 所述参考配置信息包括 下列信息:
以所述定时提前组中的主小区作为所述参考小区; 或者
以最先接收到的下行信号对应的小区作为所述参考小区; 或者 以频点最小的小区作为所述参考小区; 或者
以小区索引号最小的小区作为所述参考小区; 或者
以最先激活的小区作为所述参考小区。
5、 根据权利要求 1至 4任一权利要求所述的方法, 其特征在于, 所述 方法还包括:
若所述参考小区需要去激活, 所述用户设备确定该用户设备的定时提 前组中的第二参考小区;
所述用户设备根据所述用户设备接收到所述第二参考小区的下行信号 的时间和所述定时提前组的 TA值,确定所述定时提前组的上行信号的新发 送时间。
6、 根据权利要求 5所述的方法, 其特征在于, 所述用户设备确定该用 户设备的定时提前组中的第二参考小区, 包括:
所述用户设备根据所述去激活的消息中包含的小区标识信息确定所述 第二参考小区。
7、 根据权利要求 1至 4任一权利要求所述的方法, 其特征在于, 所述 方法还包括:
若有不同于所述参考小区的小区需要激活, 所述用户设备确定该用户 设备的定时提前组中的第三参考小区;
所述用户设备根据所述用户设备接收到所述第二参考小区的下行信号 的时间和所述定时提前组的 TA值,确定所述定时提前组的上行信号的新发 送时间。
8、 根据权利要求 7所述的方法, 其特征在于, 所述用户设备确定该用 户设备的定时提前组中的第三参考小区, 包括:
所述用户设备根据所述激活的消息中包含的小区标识信息确定所述第 三参考小区。
9、 一种用户设备, 其特征在于, 包括:
小区确定单元, 用于确定所述用户设备的定时提前组中的参考小区; 时间确定单元, 根据所述用户设备接收到所述参考小区的下行信号的 时间和所述定时提前组的定时提前 TA值,确定所述定时提前组的上行信号 的发送时间。
10、 根据权利要求 9所述的用户设备, 其特征在于, 所述小区确定单 元进一步用于接收基站发送的所述参考小区的小区标识信息, 并根据所述 参考小区的小区标识信息确定所述参考小区; 或者,
所述小区确定单元进一步用于根据参考配置信息, 确定所述参考小区。
1 1、 根据权利要求 10所述的用户设备, 其特征在于, 所述参考配置信 息包括下列信息:
以所述定时提前组中的主小区作为所述参考小区; 或者
以最先接收到的下行信号对应的小区作为所述参考小区; 或者 以频点最小的小区作为所述参考小区; 或者
以小区索引号最小的小区作为所述参考小区; 或者
以最先激活的小区作为所述参考小区。
12、根据权利要求 9至 1 1任一权利要求所述的用户设备,其特征在于, 所述小区确定单元还用于若所述参考小区需要去激活, 确定所述用户 设备的定时提前组中的第二参考小区;
所述时间确定单元还用于根据所述用户设备接收到所述第二参考小区 的下行信号的时间和所述定时提前组的 TA值,确定所述定时提前组的上行 信号的新发送时间。
13、根据权利要求 9至 1 1任一权利要求所述的用户设备,其特征在于, 所述小区确定单元还用于若有不同于所述参考小区的小区需要激活, 所述用户设备确定所述用户设备的定时提前组中的第三参考小区;
所述时间确定单元还用于根据所述用户设备接收到所述第三参考小区 的下行信号的时间和所述定时提前组的 TA值,确定所述定时提前组的上行 信号的新发送时间。
PCT/CN2012/081802 2011-09-29 2012-09-24 上行信号的发送时间确定方法及设备 WO2013044764A1 (zh)

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