WO2011047504A1 - 对组成载波进行定时调整的方法、基站及*** - Google Patents

对组成载波进行定时调整的方法、基站及*** Download PDF

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Publication number
WO2011047504A1
WO2011047504A1 PCT/CN2009/074520 CN2009074520W WO2011047504A1 WO 2011047504 A1 WO2011047504 A1 WO 2011047504A1 CN 2009074520 W CN2009074520 W CN 2009074520W WO 2011047504 A1 WO2011047504 A1 WO 2011047504A1
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Prior art keywords
component carrier
carrier
downlink component
uplink
downlink
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PCT/CN2009/074520
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English (en)
French (fr)
Inventor
李亚娟
常俊仁
武雨春
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华为技术有限公司
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43899772&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2011047504(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2009/074520 priority Critical patent/WO2011047504A1/zh
Priority to CN2009801476313A priority patent/CN102440048A/zh
Priority to EP09850500.1A priority patent/EP2493254B1/en
Publication of WO2011047504A1 publication Critical patent/WO2011047504A1/zh
Priority to US13/450,050 priority patent/US20120201214A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, a base station, and a system for performing timing adjustment on a component carrier after carrier aggregation. Background technique
  • the 3GPP LTE-Advanced system is ready to use carrier aggregation technology as its method of expanding system bandwidth.
  • the main idea of carrier aggregation is to aggregate multiple component carriers into a carrier higher than 20M to support high-speed data transmission rate. As shown in the carrier aggregation diagram in Figure 1, the downlink bandwidth is aggregated by five 20M carriers.
  • the terminal UE communicates with two access points using two different component carriers. Two sites are respectively arranged with two remote antenna heads or distributed antenna heads. The UE uses two different component carriers and The two sites communicate.
  • different downlink component carriers are timing-aligned when the base station transmits, but the time to reach the same UE may be different due to different propagation environments, resulting in different uplink carrier components. time.
  • the base station eNB only needs to send the offset of the uplink timing adjustment to the UE. Since the LTE R8 system has only one pair of uplink and downlink component carriers, the downlink timing reference carrier is very clear, and the UE can be based on The only downlink carrier adjustment TA, other information does not need to be clear. However, there are multiple downlink component carriers in LTE-A, and these downlink component carriers may arrive at the UE at different times. The TA adjustment of the uplink carrier cannot be accurately determined by using the prior art. Summary of the invention
  • Embodiments of the present invention provide a method, a base station, and a system for timing adjustment of component carriers.
  • the embodiment of the present invention provides a method for timing adjustment of a component carrier, including the following steps: receiving indication signaling, where the indication signaling is used to indicate a downlink component carrier that is used as a timing reference for an uplink component carrier;
  • the timing information of the downlink component carrier is used as a timing reference time to adjust the uplink component carrier.
  • the embodiment of the present invention further provides a base station, configured to communicate with a terminal by using at least two component carriers after the carrier aggregation, including: an indication signaling sending apparatus, configured to send indication signaling, where the indication signaling is used Timing information indicating a downlink component carrier that is a timing reference for the uplink component carrier.
  • the embodiment of the present invention further provides a system for timing adjustment of a component carrier, including a base station and a terminal;
  • the base station is configured to send indication signaling, where the indication signaling is used to indicate a downlink component carrier that is a timing reference for the uplink component carrier;
  • the terminal adjusts the uplink component carrier by using the timing information of the downlink component carrier as the timing reference time according to the indication signaling.
  • the downlink component carrier that is used as the timing reference for the uplink component carrier is used in the sending indication signaling. It is possible to clarify the timing reference time used by the terminal to perform TA adjustment of the uplink component carrier, and accurately determine the TA adjustment of the uplink component carrier.
  • FIG. 1 is a schematic diagram of a prior art carrier aggregation
  • FIG. 2 is a schematic diagram of a prior art terminal using two different component carriers to communicate with two access points;
  • FIG. 3 is a flowchart of a method for timing adjustment of a component carrier after carrier aggregation according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a downlink component carrier in a group that specifies an uplink component carrier reference timing according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a base station according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a system for timing adjustment of component carriers after carrier aggregation according to an embodiment of the present invention. detailed description
  • an embodiment of the present invention provides a method for timing adjustment of a component carrier after carrier aggregation, which includes the following steps:
  • Step 301 The terminal UE receives the indication signaling, where the indication signaling is used to indicate a downlink component carrier that is used as a timing reference for the uplink component carrier.
  • Step 302 The UE adjusts the timing information of the downlink component carrier as a timing reference time to form a carrier.
  • step 301 and step 302 can be used to determine the timing reference time used by the UE to perform TA adjustment of the uplink component carrier, and accurately determine the TA adjustment of the uplink component carrier.
  • the indication signaling is used to select different downlink component carriers for timing reference of the uplink component carrier according to the preset rule and/or the external command indication, and further enable the UE to perform uplink component carrier TA. Adjustments are more flexible and meet specific needs.
  • the preset rule may include the timing information of the downlink component carrier used by the UE in the first random access RACH (RACH) process as the timing reference time of the TA of all uplink component carriers.
  • the preset rule may also be: when the UE performs the TA adjustment of the uplink component carrier, the downlink component carrier where the serving cell or the primary serving cell (the primary serving cell or the special cell) is located is used as the timing reference point.
  • the preset rule can also treat the uplink and downlink component carriers with the same propagation environment (for example, the same site to the UE) as a group of component carriers, so that the UE will randomly access the RACH process in each component carrier group.
  • the timing information of the downlink component carrier is used as the timing reference time of the TA of all uplink carriers in the component carrier (CC) group.
  • the preset rule may also be: the base station broadcasts each uplink carrier TA in the system broadcast message to adjust the downlink timing reference component carrier, or broadcasts the downlink carrier in each carrier group of the same TA timing reference time in the system broadcast message. Timing reference carrier.
  • the indication signaling can also be further flexibly adjusted according to external commands or separately according to external commands; in particular, the external command can be flexibly changed according to a specific application scenario.
  • the downlink component carrier is used as a timing reference time for adjusting all uplink component carriers, and may also be used to specify all uplink component carrier reference timing groups in the group according to CC group information.
  • the downlink constitutes a carrier.
  • the intra-group downlink component carrier specifies the uplink component carrier reference timing for different CC groups according to the group information.
  • CC group 341 the intra-group downlink component carrier DLCC1 of all uplink component carriers ULCC1 and ULCC2 reference timing in the specified group is included;
  • RRC Radio Resource Control
  • the following is described by taking the radio resource control protocol RRC (Radio Resource Control) configuration information bearer as an example. It can be understood that the RRC configuration message can clearly indicate that each The timing of the TA adjustment by the uplink carrier is referred to the downlink component carrier.
  • the first CC group or the second CC group is used to represent a specific application scenario as an example. It can be understood that the first and second descriptions are only used to indicate the difference, and have no special physical meaning.
  • the timing of the uplink component carrier is referred to the downlink component carrier in the CC group as much as possible.
  • the timing reference downlink component carrier may be a downlink component carrier in the first CC group, or the base station and the UE default to any downlink component carrier in the first CC group.
  • the base station may specify a new timing reference carrier, or may be automatically replaced by the UE to the same CC group. Other downlink components within the carrier.
  • the base station should specify other downlink component carriers as the uplink timing reference carrier.
  • the base station When there is no downlink component carrier in a CC group, the base station must specify a downlink component carrier as the timing reference carrier of all uplink carriers of the group, or may default to use the downlink component carrier where the primary serving cell is located as the timing reference carrier.
  • the TA-adjusted downlink timing reference carrier may be specified, or the TA adjustment of the uplink component carrier may be referenced to the downlink timing reference of other uplink component carriers in the same CC group as the uplink component carrier. Carrier.
  • the base station can determine the timing reference downlink carrier of the uplink carrier by using a system message or RRC signaling or MAC control information.
  • the indication signaling may also be carried by the broadcast information sent by the base station, and the downlink component carrier is used as a timing reference time for adjusting the uplink component carrier. It can be understood that, in the system broadcast information, information indicating that the uplink and downlink component carrier pairing or grouping is added is added, and the pairing or grouping information is used in addition to In addition to the TA-adjusted timing reference downlink component carrier, it can also be used for other purposes, such as random access RACH.
  • the specific grouping method herein can also refer to FIG. 4.
  • the same or different downlink component carriers are selected for the uplink component carrier according to the preset rule and/or the external command indication, and the downlink component carrier is used as the timing reference time to adjust the uplink component carrier. If the selected downlink component carrier is released or replaced by the reconfiguration process, the re-establishment process, or other manners, the downlink component carrier of another timing reference needs to be reselected to adjust the corresponding uplink component carrier. It can be understood that the reselection here is of course. When the selected downlink component carrier is replaced by a reconfiguration process or the like, the base station can notify the UE in the reconfiguration message that the other carrier is used as the new timing reference time.
  • the uplink TAs of the current ULCC1 and ULCC2 refer to the DLCC1, when the DLCC1 is no longer When serving the UE, the UE and the base station can simultaneously maintain the existing uplink synchronization by using DLCC3 in the same CC group as the synchronization reference time. If there is no downlink component carrier in a CC group at this time, it is necessary to perform the RACH procedure for the uplink component carrier in the CC group to determine a new timing reference time.
  • the base station can explicitly indicate the downlink component carrier of the timing reference in signaling such as a reconfiguration message.
  • the UE may also actively send a request message to the base station, and the request message is used to request to obtain a downlink component carrier that re-specifies a timing reference.
  • an embodiment of the present invention further provides a base station 400, which is configured to communicate with a terminal 410 by using at least two component carriers that are aggregated by using a carrier.
  • the base station 400 includes: an indication signaling sending apparatus 401, configured to The terminal 410 sends the indication signaling, where the indication signaling is used to indicate a downlink component carrier that is used as a timing reference for the uplink component carrier. Further, the timing reference time used when the terminal 410 performs the TA adjustment of the uplink component carrier is clarified.
  • the base station 400 may further include: a preset rule storage device 402, configured to select a first random access channel (RACH)
  • the row constitutes a carrier as the selected downlink component carrier;
  • the indication signaling sending device 401 sends the indication signaling according to the downlink component carrier selected by the preset rule storage device 402.
  • the manner of the downlink component carrier selected by the preset rule storage device 402 can refer to the preset rule in the method embodiment of the present specification, and the preset rule storage device 402 can be instructed according to different preset rules and/or external commands.
  • the uplink component carrier is used as a timing reference, different downlink component carriers are selected. The flexibility in timing reference time used when the terminal 410 performs TA adjustment of the uplink component carrier is improved.
  • the indication signaling may be carried by the radio resource control protocol RRC (Radio Resource Control) configuration information;
  • RRC Radio Resource Control
  • the downlink component carrier is used as a timing reference time for adjusting timing of all uplink component carriers, and may also be different CC according to CC group information.
  • RRC Radio Resource Control
  • the uplink component carriers in the group are in the group, and the downlink component carriers are downlink components.
  • the indication signaling may also be carried by the broadcast information sent by the base station 410, and the downlink component carrier is used as a timing reference time for adjusting the uplink component carrier. It can be understood that information indicating the uplink/downlink component pairing or grouping is added to the system broadcast information, and the pairing or grouping information can be used for other purposes, such as random access, in addition to the timing reference downlink component carrier for TA adjustment. RACH and so on.
  • different downlink component carriers are selected for the timing component of the uplink component carrier, and the downlink component carrier is used as the timing reference time to adjust the uplink component carrier. If the selected downlink component carrier is replaced by a reconfiguration process, a re-establishment process, or other manner, the downlink component carrier of another timing reference is reselected to adjust the corresponding uplink component carrier. It can be understood that the re-selection can be selected according to the preset rule in the method embodiment of the present specification, and details are not described herein again.
  • the base station 400 may notify the UE to use the other carrier as the new timing reference time in the reconfiguration message equivalent message.
  • the base station 400 receives the request message sent by the terminal 410 to the base station 400.
  • the request message is used to request to obtain a downlink component carrier that re-specifies a timing reference.
  • the embodiment of the present invention further provides a system for timing adjustment of a component carrier after carrier aggregation, including a base station 500 and a terminal 510;
  • the base station 500 is configured to send indication signaling, where the indication signaling is used to indicate a downlink component carrier that is used as a timing reference for the uplink component carrier;
  • the terminal 510 adjusts the uplink component carrier by using the downlink component carrier as a timing reference time according to the indication signaling.
  • the downlink component carrier in the system embodiment is a downlink component carrier used by the base station 500 to select a first random access channel (RACH); the downlink component carrier is used as a timing reference time. Adjust all uplink component carriers.
  • RACH random access channel
  • the base station 500 in the system embodiment may have the same function as the base station 400 in FIG. 5; the terminal 510 in the system embodiment has the same function as the terminal 410 in FIG. 5, and details are not described herein again.
  • the optional terminal 510 adjusts all uplink component carriers or partial uplink component carriers as the timing reference time.
  • the terminal 510 sends a request message to the base station 500, where the request message is used to request to obtain a downlink component carrier that re-specifies a timing reference.
  • the system directly carries the re-established timing reference downlink carrier when sending a message such as reconfiguration.
  • the method, the base station, and the system disclosed in the present specification clarify the pairing relationship of the uplink and downlink component carriers, and the pairing, that is, the uplink component carrier, adjusts the downlink component carrier of the reference pairing.
  • each terminal UE adjusts all uplink carriers by using the downlink component carrier used in the first RACH process as the timing reference time, or adjusts all the carriers or the primary carrier of the primary serving cell as the timing reference time. Uplink carrier, or other way to adjust the uplink carrier.
  • the UE When the timing reference downlink component carrier of the terminal is replaced by the reconfiguration process or the like, the UE needs to reselect a downlink component carrier of a timing reference to adjust all uplink carriers, and the eNB may re-designate a downlink component carrier of a timing reference.
  • the eNB When performing carrier reconfiguration on the UE, try to reserve the timing reference carrier of the UE or try to keep one downlink component carrier in the same CC group.
  • the timing reference time used by the UE to adjust the TA of the uplink component carrier can be determined, and the TA adjustment of the uplink component carrier can be accurately determined, so that the UE can be more flexible when performing TA adjustment of the uplink component carrier to meet specific requirements.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Description

对组成载波进行定时调整的方法、 基站及*** 技术领域
本发明涉及通信领域， 特别涉及对经过载波汇聚后的组成载波进行定 时调整的方法、 基站及***。 背景技术
为了满足高速发展的通信需求， 3GPP LTE-Advanced***准备将载波 汇聚技术作为其扩展***带宽的方法。 载波汇聚的主要思想就是将多个组 成载波汇聚成一个高于 20M的载波， 以支持高速数据输率。 如图 1载波 汇聚示意图所示， 下行带宽由 5个 20M的载波汇聚而成。
在进行载波汇聚后， 发现在某些场景中， 终端 UE使用的多个组成载 波无法使用相同的定时调整（ Timing Adjustment , ΤΑ )参考时间。 如图 2 所示： 终端 UE使用两个不同的组成载波与两个接入点通信， 两个站点分 别布置了两个远端天线头或者分布式天线头， UE使用两个不同的组成载 波与这两个站点进行通信。 在上述的场景下， 不同的下行组成载波在基站 发射的时候尽管是定时对齐的， 但是由于传播环境的不同可能导致到达同 一个 UE的时间是不同的， 从而导致上行组成载波具有不同的 ΤΑ参考时 间。 当然在其他一些运营场景下， 同样可能出现不同上行组成载波具有不 同 ΤΑ参考时间的情况。
在现有技术 LTE R8***， 基站 eNB只需要把上行定时调整的偏移量发 送给 UE, 由于 LTE R8***只有一对上下行组成载波， 所以下行定时参考载 波是非常明确的， UE就可以基于唯一的下行载波调整 TA, 其他信息不需要 明确。 但是 LTE-A中存在多个下行组成载波， 并且这些下行组成载波可能是 不同时间到达 UE的， 采用现有技术无法准确确定上行载波的 TA调整。 发明内容
本发明实施例提供对组成载波进行定时调整的方法、 基站及***。 本发明实施例提供对组成载波进行定时调整的方法， 包括如下步骤： 接收指示信令， 所述指示信令用于指示为上行组成载波作定时参考的 下行组成载波；
将所述下行组成载波的定时信息作为定时参考时间调整上行组成载 波。
本发明实施例还提供一种基站， 用于与使用经过载波汇聚后的至少两 个组成载波与终端通信， 包括： 指示信令发送装置， 用于发送指示信令， 所述指示信令用于指示为上行组成载波作定时参考的下行组成载波的定 时信息。
本发明实施例再提供一种对组成载波进行定时调整的***， 包括基站 和终端；
所述基站用于发送指示信令， 所述指示信令用于指示为上行组成载波 作定时参考的下行组成载波；
所述终端根据所述指示信令将所述下行组成载波的定时信息作为定 时参考时间调整上行组成载波。
本发明实施例通过在发送指示信令中， 指示为上行组成载波作定时参 考的下行组成载波。 可以明确终端进行上行组成载波的 TA调整的时候所 使用的定时参考时间， 准确确定上行组成载波的 TA调整。 附图说明 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为现有技术载波汇聚示意图；
图 2为现有技术终端使用两个不同的组成载波与两个接入点进行通信 的示意图；
图 3为本发明实施例一种对经过载波汇聚后的组成载波进行定时调整 的方法流程图；
图 4为本发明实施例指定上行组成载波参考定时的组内下行组成载波 示意图；
图 5为本发明实施例一种基站示意图； 和
图 6为本发明实施例一种对经过载波汇聚后的组成载波进行定时调整 的***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。
请参阅图 3 , 本发明实施例提供一种对经过载波汇聚后的组成载波进 行定时调整的方法， 其包括以下步骤：
步骤 301 , 终端 UE接收指示信令， 所述指示信令用于指示为上行组 成载波作定时参考的下行组成载波；
步骤 302 , UE将该下行组成载波的定时信息作为定时参考时间调整上 行组成载波。
这样通过步骤 301和步骤 302,可以明确 UE进行上行组成载波的 TA 调整的时候所使用的定时参考时间， 准确确定上行组成载波的 TA调整。 可选的， 步骤 301中， 所述指示信令用于根据预设规则和 /或外部命令 指示， 为上行组成载波作定时参考时选择不同的下行组成载波， 进而使得 UE进行上行组成载波的 TA调整时更加灵活， 满足特定的需求。
该预设规则可以包括 UE 第一次随机接入 RACH ( Random Access Channel )过程中使用的下行组成载波的定时信息作为所有上行组成载波的 TA 的定时参考时间。 该预设规则也可以为： UE 在进行上行组成载波的 TA调整的时候以一个服务小区或主服务小区（ Serving cell, Primary serving cell或 special cell等） 所在的下行组成载波为定时参考点。 该预设规则也 可以将具有相同传播环境 （例如经过相同的站点转发给 UE的） 的上下行 组成载波视为一组组成载波， 这样 UE 将在每个组成载波组内随机接入 RACH 过程使用的下行组成载波的定时信息作为这个组成载波 ( Component Carrier, CC )组内所有上行载波的 TA的定时参考时间。 该 预设规则也可以为： 基站在***广播消息中广播每个上行载波 TA调整对 应的下行定时参考组成载波， 或者***广播消息中广播每个相同 TA定时 参考时间的载波组内上行载波的下行定时参考载波。 当然指示信令也可以 结合外部命令或单独根据外部命令做进一步灵活调整； 特别的， 该外部命 令可以应特殊应用场景灵活变更。
在本实施例该预设规则中， 所述下行组成载波作为定时参考时间用于 调整所有的上行组成载波， 也可以根据 CC分组信息为不同 CC组指定组 内所有上行组成载波参考定时的组内下行组成载波。
请参阅根据分组信息为不同 CC组指定上行组成载波参考定时的组内 下行组成载波示意图图 4, CC 组 341 中， 指定组内所有上行组成载波 ULCC1和 ULCC2参考定时的组内下行组成载波 DLCC1 ; CC组 342中， 指定组内的上行组成载波 ULCC3参考定时的组内下行组成载波 DLCC6。 以所述指示信令由无线资源控制协议 RRC ( Radio Resource Control ) 配置 信息承载为例进行如下说明。 可以理解， RRC配置消息中可以明确指示每 个上行载波进行 TA调整的定时参考下行组成载波。 以第一 CC组或第二 CC 组代表某种特定应用场景为例进行说明如下， 可以理解， 这里第一、 第二的说明只是用于表示区别， 没有特殊物理意义。
如果第一 CC组内既有上行组成载波又有下行组成载波， 则上行组成 载波的定时尽量参考该 CC组内的下行组成载波。 该定时参考下行组成载 波可以是基站指定第一 CC组内的一个下行组成载波，也可以是基站和 UE 默认为第一 CC组内的任一下行组成载波。
如果第二 CC组内的下行组成载波发生重配置， 恰好作为上行定时参 考的下行组成载波被释放或替换了， 那么可以由基站指定新的定时参考载 波， 也可以由 UE自动更换到相同 CC组内的其它下行组成载波。
如果第一 CC组内或第二 CC组内没有下行组成载波可以作为上行组 成载波的定时参考， 那么基站应该指定其它的下行组成载波作为上行定时 参考载波。
当一个 CC组内没有下行组成载波的情况下， 基站必须要指定一个下 行组成载波作为该组所有上行载波的定时参考载波， 或者可以默认为将主 服务小区所在的下行组成载波作为定时参考载波。
当基站新增加上行组成载波的时候， 可以指定 TA调整的下行定时参 考载波， 也可以默认该上行组成载波的 TA调整参考与该上行组成载波相 同的 CC组内的其他上行组成载波的下行定时参考载波。
如果***确定只有一个下行组成载波作为所有上行载波的定时调整 参考点， 那么应该是主服务小区所在的下行组成载波。 基站可以通过*** 消息或者 RRC信令或者 MAC控制信息确定上行载波的定时参考下行载 波。
所述指示信令也可以由基站发送的广播信息承载， 所述下行组成载波 作为定时参考时间用于调整上行组成载波。 可以理解， 在***广播信息中 增加指示上下行组成载波配对或分组的信息， 这个配对或分组信息除了用 于 TA调整的定时参考下行组成载波之外， 还可以用于其他用途， 比如随 机接入 RACH等。 可选的， 这里具体分组方法也可以参考图 4。
可选的，根据预设规则和 /或外部命令指示， 为上行组成载波作定时参 考时选择相同或者不同的下行组成载波， 并将该下行组成载波作为定时参 考时间调整上行组成载波后。 如果选择的所述下行组成载波被重配置过 程、 重建立过程或其他方式释放或者替换掉时， 需要重新选择另一个定时 参考的下行组成载波来调整对应的上行组成载波。 可以理解这里的重新选 当然， 当所选择的所述下行组成载波被重配置过程等替换掉的时， 基 站可以在重配置消息中通知 UE以其它的载波作为新的定时参考时间。 也 可以根据 CC分组的信息， 对定时参考的下行组成载波进行等同替换， 例 如图 4所示， 假设具有相同传播环境的 CC分组 341 中， 当前 ULCC1和 ULCC2的上行 TA参考 DLCC1 , 当 DLCC1不再为该 UE服务的时候， UE 和基站可以同时将相同 CC组内的 DLCC3作为同步参考时间继续维持现 有的上行同步。 如果此时出现一个 CC组内没有下行组成载波的情况， 则 这个 CC组内的上行组成载波有必要重新进行 RACH过程，确定新的定时 参考时间。 这种情况可以由基站在重配置消息等信令中明确指示定时参考 的下行组成载波。 UE 也可以主动向基站发送请求消息， 所述请求消息用 于请求获得重新指定一个定时参考的下行组成载波。
请参阅图 5本发明实施例还提供一种基站 400, 该基站用于与使用经 过载波汇聚后的至少两个组成载波与终端 410通信， 基站 400包括： 指示 信令发送装置 401 , 用于向终端 410发送指示信令， 所述指示信令用于指 示为上行组成载波作定时参考的下行组成载波。 进而明确终端 410进行上 行组成载波的 TA调整的时候所使用的定时参考时间。
可选的， 基站 400, 还可以包括： 预设规则存储装置 402, 用于选择 以第一次随机接入信道 RACH ( Random Access Channel )过程中使用的下 行组成载波作为所选择的所述下行组成载波； 所述指示信令发送装置 401 根据预设规则存储装置 402 所选择的所述下行组成载波发送所述指示信 令。 可以理解预设规则存储装置 402选择的所述下行组成载波的方式可以 参考本说明书方法实施例中的预设规则， 预设规则存储装置 402可以根据 不同的预设规则和 /或外部命令指示，指示为上行组成载波作定时参考时选 择不同的下行组成载波。 以提高终端 410进行上行组成载波的 TA调整的 时候所使用的定时参考时间时的灵活性。
同样， 指示信令可以由无线资源控制协议 RRC ( Radio Resource Control )配置信息承载； 所述下行组成载波作为定时参考时间用于调整所 有的上行组成载波的定时， 也可以根据 CC分组信息为不同 CC组指定组 内所有上行组成载波参考定时的组内下行组成载波下行组成载波， 具体也 可以请参阅图 4。
所述指示信令也可以由基站 410发送的广播信息承载， 所述下行组成 载波作为定时参考时间用于调整上行组成载波。 可以理解， 在***广播信 息中增加指示上下行组成载波配对或分组的信息， 这个配对或分组信息除 了用于 TA调整的定时参考下行组成载波之外， 还可以用于其他用途， 比 如随机接入 RACH等。
可选的，根据预设规则和 /或外部命令指示， 为上行组成载波作定时参 考时选择不同的下行组成载波， 并将该下行组成载波作为定时参考时间调 整上行组成载波后。 如果选择的所述下行组成载波被重配置过程、 重建立 过程或其他方式替换掉时， 重新选择另一个定时参考的下行组成载波来调 整对应的上行组成载波。 可以理解这里的重新选择可以依据本申请说明书 方法实施例中的预设规则进行选择， 在此不再赘述。
当然， 当所选择的所述下行组成载波被重配置过程等替换掉的时， 基 站 400可以在重配置消息等同一个消息通知 UE以其它的载波作为新的定 时参考时间。 可选的， 基站 400接收终端 410向基站 400发送请求消息， 所述请求消息用于请求获得重新指定一个定时参考的下行组成载波。
请参阅图 6, 本发明实施例还提供一种对经过载波汇聚后的组成载波 进行定时调整的***， 包括基站 500和终端 510;
所述基站 500用于发送指示信令， 所述指示信令用于指示为上行组成 载波作定时参考的下行组成载波；
所述终端 510根据所述指示信令将所述下行组成载波作为定时参考时 间调整上行组成载波。
可选的， ***实施例中的下行组成载波是所述基站 500选择以第一次 随机接入信道 RACH ( Random Access Channel )过程中使用的下行组成载 波； 所述下行组成载波作为定时参考时间用于调整所有的上行组成载波。
当然***实施例中基站 500, 可以与图 5中的基站 400具有相同的功 能； ***实施例中的终端 510与图 5中的终端 410具有相同的功能， 在此 不再赘述。
可选的终端 510将该下行组成载波作为定时参考时间调整所有的上行 组成载波， 或部分上行组成载波。 当然， 当所选择的所述下行组成载波被 重配置过程等替换掉的时， 终端 510向基站 500发送请求消息， 所述请求 消息用于请求获得重新指定一个定时参考的下行组成载波。 或者***在发 送重配置等消息时， 直接携带重新制定的定时参考下行载波。
综上， 可见本说明书中揭露的方法、 基站、 ***明确上下行组成载波 的配对关系， 所指配对即上行组成载波的 TA调整参考配对的下行组成载 波。 可选的， 每个终端 UE都以第一次 RACH过程中使用的下行组成载波 作为定时参考时间调整所有的上行载波， 或者都以主服务小区所在的载波 或主载波作为定时参考时间调整所有的上行载波， 或者其他方式调整上行 载波。 当终端的定时参考下行组成载波被重配置过程等替换掉的时候， U E需要重新选择一个定时参考的下行组成载波来调整所有的上行载波， 也 可以由 eNB重新指定一个定时参考的下行组成载波。 我们可以让 eNB在 对 UE进行载波重配置的时候， 尽量保留 UE的定时定时参考载波或尽量 保留相同 CC组内的一个下行组成载波。 进而可以明确 UE进行上行组成 载波的 TA调整的时候所使用的定时参考时间， 准确确定上行组成载波的 TA调整， 使得 UE进行上行组成载波的 TA调整时更加灵活， 满足特定的 需求。
另外， 本领域普通技术人员可以理解实现上述实施例方法中的全部或部 分流程， 是可以通过程序来指令相关的硬件来完成， 所述的程序可存储于一 计算机可读取存储介质中， 该程序在执行时， 可包括如上述各方法的实施例 的流程。 其中， 所述的存储介质可为磁碟、 光盘、 只读存储记忆体（Read-0 nly Memory, ROM )或随机存储记忆体 ( Random Acces s Memory, RAM )等。
以上所述是本发明的具体实施方式， 应当指出， 对于本技术领域的普通 技术人员来说， 在不脱离本发明原理的前提下， 还可以做出若干改进和润饰， 这些改进和润饰也视为本发明的保护范围。

Claims

权 利 要 求 书
1、 一种对组成载波进行定时调整的方法， 其特征在于， 包括如下步 骤：
接收指示信令， 所述指示信令用于指示为上行组成载波作定时参考的 下行组成载波；
将所述下行组成载波作为定时参考时间调整上行组成载波。
2、 如权利要求 1所述的方法， 其特征在于，
所述指示信令用于根据预设规则和 /或外部命令指示，为上行组成载波 作定时参考时选择下行组成载波。
3、 如权利要求 2所述的方法， 其特征在于，
所述指示信令由无线资源控制协议 RRC配置信息承载；
所述下行组成载波作为定时参考时间用于调整所有的上行组成载波。
4、 如权利要求 2所述的方法， 其特征在于， 所述指示信令由***发 送的广播信息承载；
所述下行组成载波作为定时参考时间用于调整所有的上行组成载波。
5、 如权利要求 2所述的方法， 其特征在于， 所述预设规则包括： 选择以第一次随机接入信道 RACH 过程中使用的下行组成载波作为 所选择的不同的下行组成载波。
7、 如权利要求 2所述的方法， 其特征在于， 所述预设规则包括： 根据组成载波 CC分组信息为不同 CC组指定组内所有上行组成载波 参考定时的组内下行组成载波。
8、 如权利要求 7所述的方法， 其特征在于， 根据 CC分组信息为不同 CC组指定组内所有上行组成载波参考定时的组内下行组成载波包括： 如果第一 CC组内既有上行组成载波又有下行组成载波， 则基站指定 第一 CC组内的一个下行组成载波或选择第一 CC组内的的任一下行组成 载波； 或 如果第二 cc组内 CC组内的下行组成载波作为上行定时参考的下行 组成载波被释放了， 则由基站指定新的定时参考载波或由 UE自动更换到 相同第二 CC组内的其它下行组成载波。
9、 如权利要求 2所述的方法， 其特征在于， 所述预设规则还包括： 当基站新增加上行载波时， 指定 TA调整的下行定时参考载波。
10、 如权利要求 2所述的方法， 其特征在于， 所述预设规则还包括： 当基站新增加上行载波时， 默认该上行载波的 TA调整参考与该上行 载波相同的 CC组内的其他上行组成载波的下行定时参考载波。
11、 如权利要求 1所述的方法， 其特征在于，
当所选择的所述下行组成载波被重配置过程替换掉时， 重新选择另一 个定时参考的下行组成载波来调整所有的上行组成载波。
12、 如权利要求 9所述的方法， 其特征在于，
优先选择主小区所在的下行载波作为定时参考时间。
13、 如权利要求 1所述的方法， 其特征在于， 当所选择的所述下行组 成载波被重配置过程替换掉的时， 发送请求消息， 所述请求消息用于请求 获得重新指定一个定时参考的下行组成载波。
14、 一种基站， 用于与使用经过载波汇聚后的至少两个组成载波与终 端通信， 其特征在于包括： 指示信令发送装置， 用于发送指示信令， 所述 指示信令用于指示为上行组成载波作定时参考的下行组成载波。
15、 如权利要求 14所述的基站， 其特征在于还包括：
预设规则存储装置，用于选择以第一次随机接入信道 RACH ( Random Access Channel ) 过程中使用的下行组成载波作为所选择的所述下行组成 载波；
所述指示信令发送装置根据预设规则存储装置所选择的所述下行组 成载波发送所述指示信令。
16、 一种对组成载波进行定时调整的***， 其特征在于， 包括基站和 终端；
所述基站用于发送指示信令， 所述指示信令用于指示为上行组成载波 作定时参考的下行组成载波；
所述终端根据所述指示信令将所述下行组成载波作为定时参考时间 调整上行组成载波。
17、 如权利要求 16所述的***， 其特征在于， 所述下行组成载波是 所述基站选择以第一次随机接入信道 RACH ( Random Access Channel )过 程中使用的下行组成载波；
所述下行组成载波作为定时参考时间用于调整所有的上行组成载波。
PCT/CN2009/074520 2009-10-20 2009-10-20 对组成载波进行定时调整的方法、基站及*** WO2011047504A1 (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102595481A (zh) * 2012-02-15 2012-07-18 新邮通信设备有限公司 载波聚合下定时参考小区的确定方法
WO2013044764A1 (zh) * 2011-09-29 2013-04-04 华为技术有限公司 上行信号的发送时间确定方法及设备
CN103209432A (zh) * 2012-01-11 2013-07-17 中兴通讯股份有限公司 时间参考小区的重配置方法、装置及***
WO2013113146A1 (en) * 2012-01-30 2013-08-08 Renesas Mobile Corporation Method and apparatus for controlling uplink transmission

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8934459B2 (en) 2010-01-08 2015-01-13 Interdigital Patent Holdings, Inc. Maintaining time alignment with multiple uplink carriers
CN106877989B (zh) * 2010-11-11 2020-06-02 瑞典爱立信有限公司 分量载波聚合控制方法及设备、***和计算机可读介质
WO2014082271A1 (zh) * 2012-11-29 2014-06-05 华为技术有限公司 一种定时参考小区的处理方法和设备
CN103172449B (zh) * 2013-04-07 2014-12-24 中国农业大学 一种苹果专用螯合钙叶面肥及其制备方法与施用方法
KR102244326B1 (ko) * 2015-01-30 2021-04-23 후아웨이 테크놀러지 컴퍼니 리미티드 다중 요소 반송파 시스템에서 서빙 셀을 그룹핑하는 방법 및 장치
US9503990B2 (en) 2015-01-30 2016-11-22 Innovative Technology Lab Co., Ltd. Apparatus and method for performing uplink power control in wireless communication system supporting carrier aggregation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1466285A (zh) * 2002-06-06 2004-01-07 华为技术有限公司 时分双工无线通信***中实现同步的方法
CN101505538A (zh) * 2009-03-13 2009-08-12 中兴通讯股份有限公司 一种多载波随机接入的方法和***
CN101540978A (zh) * 2009-04-27 2009-09-23 中兴通讯股份有限公司 下行分量载波标识方法、同步下行分量载波上报方法与装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8320356B2 (en) * 2005-04-28 2012-11-27 Panasonic Corporation Wireless communication apparatus and wireless communication method
WO2008155734A2 (en) * 2007-06-18 2008-12-24 Nokia Corporation Method and apparatus for providing timing alignment
ES2612785T3 (es) 2007-11-05 2017-05-18 Telefonaktiebolaget Lm Ericsson (Publ) Alineamiento mejorado de sincronización en un sistema LTE en caso de conflicto del preámbulo de acceso aleatorio
GB2456128B (en) * 2007-12-20 2010-01-27 Samsung Electronics Co Ltd Communication system and method
WO2009099312A2 (en) 2008-02-10 2009-08-13 Lg Electronics Inc. Random access channel frequency allocation
KR101089838B1 (ko) * 2008-08-13 2011-12-05 한국전자통신연구원 캐리어 집성을 사용하는 통신 시스템 및 상기 통신 시스템에 속하는 기지국 및 단말
US8526374B2 (en) * 2008-09-12 2013-09-03 Qualcomm Incorporated Physical random access channel (PRACH) transmission in multicarrier operation
US8514793B2 (en) * 2008-10-31 2013-08-20 Interdigital Patent Holdings, Inc. Method and apparatus for monitoring and processing component carriers
KR101470063B1 (ko) * 2009-03-12 2014-12-12 인터디지탈 패튼 홀딩스, 인크 업링크 일차 반송파를 선택 및 재선택하는 방법 및 장치
EP3193530B1 (en) * 2009-03-12 2022-05-04 InterDigital Patent Holdings, Inc. Method and apparatus for performing component carrier-specific reconfiguration
US9137764B2 (en) * 2009-03-17 2015-09-15 Htc Corporation Method of managing timing alignment functionality for multiple component carriers and related communication device
CN101516140A (zh) 2009-03-18 2009-08-26 中兴通讯股份有限公司 一种随机接入响应的传输方法及传输基站和接收终端
US8755298B2 (en) * 2009-07-06 2014-06-17 Lg Electronics Inc. Method and apparatus for random access in a wireless communication system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1466285A (zh) * 2002-06-06 2004-01-07 华为技术有限公司 时分双工无线通信***中实现同步的方法
CN101505538A (zh) * 2009-03-13 2009-08-12 中兴通讯股份有限公司 一种多载波随机接入的方法和***
CN101540978A (zh) * 2009-04-27 2009-09-23 中兴通讯股份有限公司 下行分量载波标识方法、同步下行分量载波上报方法与装置

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WO2013044764A1 (zh) * 2011-09-29 2013-04-04 华为技术有限公司 上行信号的发送时间确定方法及设备
CN103209432A (zh) * 2012-01-11 2013-07-17 中兴通讯股份有限公司 时间参考小区的重配置方法、装置及***
WO2013113146A1 (en) * 2012-01-30 2013-08-08 Renesas Mobile Corporation Method and apparatus for controlling uplink transmission
CN102595481A (zh) * 2012-02-15 2012-07-18 新邮通信设备有限公司 载波聚合下定时参考小区的确定方法

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