CN101646234A - Obtaining method of timing lead - Google Patents

Obtaining method of timing lead Download PDF

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Publication number
CN101646234A
CN101646234A CN 200910161920 CN200910161920A CN101646234A CN 101646234 A CN101646234 A CN 101646234A CN 200910161920 CN200910161920 CN 200910161920 CN 200910161920 A CN200910161920 A CN 200910161920A CN 101646234 A CN101646234 A CN 101646234A
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China
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user terminal
new
timing advance
timing
component carrier
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CN 200910161920
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Chinese (zh)
Inventor
斌 喻
戎 张
鹏 朱
王瑜新
鹏 郝
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中兴通讯股份有限公司
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Priority to CN 200910161920 priority Critical patent/CN101646234A/en
Publication of CN101646234A publication Critical patent/CN101646234A/en

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    • 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/12Dynamic Wireless traffic scheduling ; Dynamically scheduled allocation on shared channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/08Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure

Abstract

The invention discloses an obtaining method of timing lead, which is applied to a carrier wave aggregating system; the method comprises: a user terminal obtains a timing lead through initial access, and system information broadcasted by a cell base station is read; the user terminal determines weather a new timing lead is needed to obtain according to configuration information of the timing lead of each carrier component in the system information, and/or indication information for transmitting the timing lead by the base station, when the base station dispatches the user terminal to transmit an uplink signal on a new carrier component; if yes, random access is initiated on the new carrier component to obtain a new timing lead. By adopting the method, flexible configuration of same timing lead or different timing leads adopted on different carrier components based on the cell or the user terminal is realized, and pay expenses of uplink-synchronization establishment and maintenance suchas random access are reduced at the same time.

Description

一种定时提前量的获取方法 The method of obtaining a timed advance of

技术领域 FIELD

本发明涉及移动通信领域,特别涉及一种定时提前量的获取方法。 The present invention relates to the field of mobile communications, particularly to a method for obtaining a timing advance. 背景技术 Background technique

3GPP LTE ( The 3rd Generation Partnership Project Long Term Evolution, 第三代合作伙伴计划长期演进)系统上行采用SC-FDMA (单栽波频分多址) 传输技术,为了满足用户终端(UserEquipment,简称UE)上行信号之间的正交性,必须保证各UE上行信号到达基站接收端的时间一致,即上行同步。 3GPP LTE (The 3rd Generation Partnership Project Long Term Evolution, the Third Generation Partnership Project Long Term Evolution) system using an uplink SC-FDMA (Single planted wave frequency division multiple access) transmission technique, in order to meet the user terminal (User Equipment, abbreviated UE) uplink orthogonality between signals, each UE must ensure that the base station receives an uplink signal arrives at the end of the same time, i.e., uplink synchronization. 上行同步可以通过基站控制UE采用不同的定时提前量(Timing Advance Command,简称TA)来实现,即距离基站较远、传播时延较大的UE较早发送,距离基站较近、传播时延较小的UE较晚发送,从而使各个UE的上行信号基本同时到达基站接收端。 Base station uplink synchronization by controlling the UE can employ different timing advance (Timing Advance Command, abbreviated TA) is achieved, i.e., far away from the base station, a larger propagation delay UE sent earlier, closer from the base station, the propagation delay than small UE later transmission, so that the uplink signal of each UE substantially simultaneously reach the base station receiver. 基站通过MAC层信令指示UE采用适当的定时提前量TA。 The base station indicated by UE MAC layer signaling using appropriate timing advance TA.

UE可以通过发起随才几接入(Random Access),从基站的随枳4矣入响应(Random Access Response )中获得定时提前量;也可以通过基站发送的MAC 层信令(Timing Advance Command MAC control element)获得定时提前量的更新。 UE can access only a few (Random Access), 4 initiated by the carry over from the base station with Hovenia response (Random Access Response) obtained in the timing advance; may be transmitted by the base station MAC layer signaling (Timing Advance Command MAC control element) to obtain timing advance update. 其中,随机接入响应中的定时提前量为llbits,指示新的上行定时(uplink timing) ; Timing Advance Command MAC control element中的定时提前量为6bits,指示对当前上行定时的调整。 Wherein, in response to the random access timing of the advance of llbits, indicating the new uplink timing (uplink timing); Timing Advance Command MAC control element in an amount of the timing advance 6bits, indicating the current uplink timing adjustment.

以下说明随机接入响应中定时^是前量的获取方法。 The following described timing of the random access response is a front ^ amount acquisition method.

首先,用户终端通过小区搜索与小区基站建立下行时间同步和频率同步, 获得下行定时(downlink timing )。 First, the user terminal establishes a downlink by the cell search and cell time base synchronization and frequency synchronization, downlink timing is obtained (downlink timing). 然后,读取物理广播信道(Physical Broadcast Channel,简称PBCH )和物理下4亍共享信道(Physical Downlink Shared Channel ,简称PDSCH)上的系统信息(System Information)。 Then, reading a physical broadcast channel (Physical Broadcast Channel, abbreviated PBCH) and the Physical Shared Channel 4 right foot (Physical Downlink Shared Channel, referred to as PDSCH) system information (System Information) on. LTE系统的系统信息分为主信息块(Master Information Block,简称MIB )和一系列系统信息块(System Information Blocks,筒称SIBs)。 The system information of the LTE system information block is divided into main (Master Information Block, referred to as MIB) and a number of system information blocks (System Information Blocks, said cartridge SIBs). 其中, 主信息块(MIB)包含一些最基本的系统信息,包括下行系统带宽、物理下行HARQ (混合自动重传)指示信道(PHICH)的配置信息、系统帧号等。 Wherein the master information block (MIB) containing some basic information system, comprising a downlink system bandwidth, a physical downlink HARQ (hybrid automatic repeat request) indicator channel (PHICH) configuration information, system frame number and the like. 主信息块(MIB )在物理广播信道(PBCH)上周期发送。 A master information block (MIB) transmitted on a periodic physical broadcast channel (PBCH). 系统信息块(SIBs ) 根据内容分为11类(SystemlnformationBlockType 1〜11),并在物理下行共享信道上发送。 System information blocks (SIBs) The content is divided into 11 classes (SystemlnformationBlockType 1~11), and transmitting a physical downlink shared channel. 其中,SystemlnformationBlockType2 (SIB-2)包含了该小区的无线资源配置信息(Radio Resource Configuration Information ),其中包括上行载波的载频信息、上行系统带宽,以及随机接入配置参数。 Wherein, SystemlnformationBlockType2 (SIB-2) includes radio resource configuration information of the cell (Radio Resource Configuration Information), wherein the carrier includes uplink carrier information, uplink system bandwidth, and the parameter of random access configuration.

完成下行同步和获取系统信息之后,用户终端发起随机接入。 After the completion of the downlink synchronization and acquiring system information, the user terminal initiates a random access. 通过随机接入,用户终端与小区基站建立上行时间同步,获得定时提前量。 By random access, the user terminal establishes an uplink time synchronization and cell base station, the timing advance is obtained. 根据占用资源方式的不同,随机接入过程又分为基于竟争的(contention based)随机接入和基于非竟争的(non-contention based)随才几接入。 Depending on the mode of occupied resources, based on the random access procedure is divided into a competitive (contention based) random access based on a non-competitive (non-contention based) with only a few access.

如图1所示,基于竟争的随机接入过程分为四步: 1, the competition based random access procedure is divided into four steps:

(1 ) UE根据系统信息块SIB-2中的随机接入配置参数,选择物理随机接入信道(Physical Random Access Channel,简称PRACH)向基站eNB (evolved Node B,演进的节点B)发送随机接入前导(Random Access Preamble, 又称为Message 1, 简写为Msgl)。 (1) UE random access configuration parameters in system information blocks SIB-2, select the physical random access channel (Physical Random Access Channel, abbreviated PRACH) transmitting a random access to the base station eNB (evolved Node B, an evolved Node B) the preamble (Random Access preamble, also called Message 1, abbreviated as Msgl).

所谓基于竟争的随机接入,即基站配置的随机接入前导可选集是小区内多个用户终端共享的。 The so-called competitive-based random access, i.e., the base station configures a random access preamble set optionally within a cell of the plurality of user terminals to share.

随机接入前导基于下行同步的子帧(subframe)位置发送(此时假设定时提前量为0)。 Random access preamble based on the synchronization of the downlink subframe (subframe) transmitted position (assuming a timing advance at this time is 0). 具体说,对于频分双工(Frequency Division Duplex,简称FDD)模式,随机接入前导在下行同步的子帧起始位置开始发送;对于时分双工(Time Division Duplex,简称TDD)才莫式,随机接入前导格式0〜3 (preamble format 0~3 )在下行同步的子帧起始位置开始发送,随机接入前导格式4 (preamble format 4)在下行同步的时隙UpPTS (上行导频时隙)的结束位置前5158个Ts开始发送。 In particular, for a frequency division duplex (Frequency Division Duplex, referred to as FDD) mode, a random access preamble in a downlink sub-frame transmission synchronization start position; for a time division duplex (Time Division Duplex, referred to as TDD) was Mohs, a random access preamble formats 0~3 (preamble format 0 ~ 3) starts to transmit a downlink sub-frame synchronization start position of the random access preamble format 4 (preamble format 4) in the downlink slot synchronization UpPTS (uplink pilot time slot) location of the front end transmission 5158 Ts starts. 其中,Ts4/(15000x2048)秒。 Wherein, Ts4 / (15000x2048) seconds.

(2)基站检测到随机接入前导后,利用其中的随机接入前导序列,计算定时提前量。 (2) base station detects the random access preamble, wherein the random access preamble sequence and timing advance is calculated. 如图2所示,定时提前量包括了上行和下行链路的传播时延(propagation delay ),以及多径时延(multipath delay )。 As shown in FIG 2 comprises a timing advance and the uplink propagation delay of downlink (propagation delay), delay and multipath (multipath delay). 定时4是前量连同其他一些信令信息,经物理下行共享信道发送,称为随机接入响应(又称为Message 2 , 简写为Msg 2 )。 4 is a front, along with the timing the amount of other signaling information by transmitting a physical downlink shared channel, known as a random access response (also referred to as Message 2, abbreviated as Msg 2).

(3 )用户终端在收到随机接入响应后,按照随机接入响应中对应于其发送的随机接入前导的定时提前量,在下行同步的子帧起始位置的基础上,提前相应的一^:时间发送首次调度上行传输(First scheduled UL transmission, 又称为Message 3,简写为Msg3)。 (3) the user terminal after receiving the random access response, a random access response corresponding to the timing of the random access preamble transmitted thereto advance, on the basis of the downlink sub-frame synchronization start position, the corresponding advance a ^: transmitting first scheduled uplink transmission time (first scheduled UL transmission, also called Message 3, abbreviated as Msg3). Msg3根据触发该随机接入过程的事件不同而包含有不同的信息。 Msg3 different events triggering the random access procedure contains different information.

(4)如前所述,对基于竟争的随机接入过程,多个用户终端可能从共用的随机接入前导可选集中选择相同的随机接入前导,并选择了相同的随机接入信道。 (4) As described above, based on competition of a random access procedure, the user terminal may be selectable from a plurality of common random access preamble concentrated select the same random access preamble, and selects the same random access channel . 基站收到Msg 3后还要按其内容反馈竟争解决消息(Contention Resolution,又称为Message 4,简写为Msg 4 )给用户终端,以解决可能出现的沖突问题。 The base station also received Msg 3 competitive solve their content feedback message (Contention Resolution, also known as Message 4, abbreviated as Msg 4) to the user terminal, to resolve conflicts that may arise.

基于非竟争的随机接入过程则可分为两步,类似于基于竟争的随机接入过程的前两步。 It can be divided into two steps based on non-competitive random access procedure, similar to the first two steps of competition based random access procedure. 但在第(1)步中,用户终端才艮据系统信息块SIB-2中的随机接入配置参数,以及高层信令的配置,选择物理随机接入信道发送随机接入前导。 But in the step (1), the user terminal before the random access data Gen system information block SIB-2 configuration parameters, and the configuration of the high-level signaling, to select a physical random access channel transmits a random access preamble. 具体说,高层信令显式地给出一个专用的随机接入前导,以及一个物理随机接入信道掩码(PRACH Mask index)。 In particular, higher layer signaling explicitly given a dedicated random access preamble, and a physical random access channel mask (PRACH Mask index). 用户终端才艮据该掩码,在一个确定的物理随机接入信道上,或在一组限定的物理随机接入信道中选择一个物理随机接入信道,发送专用的随机接入前导。 Gen user terminal according to the mask only in a determined physical random access channel, or a defined group of physical random access channel to select a physical random access channel, the dedicated random access preamble transmission.

随机接入前导的发送时序同基于竟争的随机接入过程一样,是基于下行同步的子帧起始位置发送(假设定时提前量为0)。 A random access preamble transmission timing based on competition with random access procedure, is based on a frame start position of synchronizing a downlink transmission (assuming a timing advance is 0).

用户终端确认随机接入成功以后,即可根据下行定时和定时提前量确定上行定时,进而发送上行信号。 After the user terminal confirms the success of random access, to determine the uplink timing advance according to the downlink timing and timing of the uplink transmission signal in turn. 这样,尽管不同的用户终端可能位于小区中的不同位置,路径传播时延和多径时延各不相同,用户终端发送的上行信号到达基站接收端的时间却是一样的。 Thus, although different user terminals may be in different positions in the cell, the propagation delay and multipath delay varies, the base station an uplink signal receiving end time of arrival of the user terminal transmitted is the same.

随着用户终端的移动,或者传播环境中散射体的移动,用户终端同小区基站间的距离发生变化,传播环境发生变化,传播时延和多径时延也随之变 With the movement of the mobile user terminal, or the propagation environment scatterers, the user terminal changes with the distance between the cell base station, propagation environment changes, propagation delay and multipath delay also will become

化,基站通过MAC层信令发送定时提前量更新给用户终端,对当前的上行定时加以调整,以保持上行同步。 Of the base station MAC layer signaling by transmitting timing advance update to the user terminal, the current to be adjusted uplink timing, in order to maintain uplink synchronization.

LTE-Advanced系统(Long Term Evolution-Advanced,简称LTE-A系统) 是LTE系统的下一代演进系统。 LTE-Advanced system (Long Term Evolution-Advanced, LTE-A system for short) is the next generation of the LTE system evolved system. 如图3所示,LTE-A系统采用载波聚合 3, LTE-A system adopts carrier aggregation

(Carrier Aggregation,又称载波聚集)技术扩展传输带宽,以获得更高的数据速率。 (Carrier Aggregation, known as carrier aggregation) technique bandwidth expansion, in order to obtain a higher data rate. 每个聚合的载波称为一个"分量载波"(Component Carrier)。 Each polymeric carrier is called a "component carrier" (Component Carrier). 分量载波在频i普上可以是连续的,也可以是非连续的;可以位于同一个频段 I P component carrier frequency may be on a continuous or a non-continuous; may be located in the same frequency band

(frequency band),也可4立于不同的频萃殳。 (Frequency band), can stand 4 different frequency extraction Shu.

不同分量载波上的上/下行传播时延和多径时延可能相同,也可能不同, 影响的因素包括:分量载波间的频率间隔,如果间隔较大,甚至位于不同的频段,不同分量载波的信道传播特性可能不一样;以及分量载波的收发机位置,如果不同分量载波使用不同的天线,且天线间间隔较大,传播时延和多径时延也可能不一样。 Uplink / downlink propagation delay and multipath delay may be the same on different component carriers, may be different, the influence of factors comprising: a frequency interval between the component carrier, if the distance is large, even located in different frequency bands, different component carriers channel propagation characteristics may not be the same; and a transceiver component carrier position, if the different component carriers using different antennas, and a large interval between the antennas, the propagation delay and multipath delay may not be the same.

因此,在与现有:R术的单一载波的系统不同的载波聚合系统中,用户终端如何获取不同分量栽波上的定时提前量,以保持上行同步,并同时减小通过随机接入建立上行同步的开销,成为一个亟待解决的问题。 Thus, in the conventional: R cytometry single carrier system different carrier aggregation system, how to obtain the different components of the user terminal planted on the timing advance wave to maintain uplink synchronization, while reducing the random access and establishes an uplink synchronization overhead becomes a problem to be solved.

发明内容 SUMMARY

本发明要解决的技术问题是提供一种定时提前量的获取方法,可应用于载波聚合系统中,使用户终端能够获取不同分量载波上的定时提前量,以保持上行同步。 The present invention is to solve the technical problem of providing a method for obtaining a timing advance, may be applied to carrier aggregation system, a user terminal can acquire the timing of the different component carriers advance, in order to maintain uplink synchronization.

为了解决上述问题,本发明提供了一种定时提前量的获取方法,包括: To solve the above problems, the present invention provides a method for obtaining timing advance, comprising:

用户终端通过初始接入,获取一个定时提前量,并读取小区基站广播的系统信息; An initial access by the user terminal, obtaining a timing advance, and read system information broadcast by the cell base station;

当所述基站调度所述用户终端在一个新的分量载波上发送上行信号时, 所述用户终端根据所述系统信息中的各分量载波的定时提前量的配置信息、和/或所述基站发送的定时提前量的指示信息,决定是否需要获取新的定时提 When the base station schedules the user terminal sends an uplink signal in a new component carrier, the user terminal advance configuration information, and / or the base station transmission timing of each component carrier according to the information system the timing advance instructions, decide whether you need to obtain a new timing mention

前量;如果需要,则在所述新的分量载波上发起随机接入以获取新的定时提 The amount of the former; if desired, initiates a random access on said new component carrier to obtain new timing extract

前量o Before the amount o

进一步地,所述各分量载波的定时提前量的配置信息包括本小区各分量 Further, the timing of the advance of each component carrier of the present cell configuration information includes the components

载波是否使用相同的定时提前量的信息; Whether to use the same carrier timing advance information;

当所述用户终端根据所述配置信息决定是否需要获取新的定时提前量时,如果所述配置信息指示本小区各分量载波使用相同的定时提前量,则所述用户终端判定无需获取新的定时提前量,在所述新的分量载波上,使用初始接入所上行同步的分量载波上的定时提前量确定上行定时,进而发送上行信号;如果所述配置信息指示本小区各分量栽波使用不同的定时提前量,则所述用户终端判定需要获取新的定时提前量,并在所述新的分量载波上,使用所述新的定时提前量确定上行定时,进而发送上行信号。 When the user terminal according to the configuration information determining whether to obtain new timing advance, if the configuration information of each component carrier indicates the present cell using the same timing advance, then the user terminal without obtaining a new timing determination advance on the new component carriers, the use of an initial access timing of synchronization on the uplink component carrier is determined uplink timing advance, in turn sends an uplink signal; different if the configuration information indicates that the components of the present plant cell using wave the timing advance then determines the user terminal needs to obtain new timing advance, and on said new component carrier, using said new timing advance is determined uplink timing, and then transmit the uplink signal.

进一步地,所述各分量载波的定时提前量的配置信息包括本小区分量栽波组的配置信息,使用相同的定时提前量的分量载波属于同一个分量载波组; Furthermore, each component carrier of the timing advance the configuration information includes configuration information of the present plant cell component sets of waves, using the same advance timing component carriers belonging to the same component carrier group;

所述用户终端根据所述配置信息,将初始接入的分量载波所属的分量载波组标记为已上行同步,并将已获取的定时提前量作为该分量载波组的定时提前量; The user terminal according to the configuration information, the initial access of the component carrier group belonging to the component carrier marked as uplink synchronization, and has acquired the timing of the timing advance as the advance of the component carrier group;

当所述用户终端根据所述配置信息决定是否需要获取新的定时提前量时,判断所述新的分量载波是否属于已上行同步的某个分量载波组,如果所述新的分量载波属于已上行同步的某个分量载波组,则所述用户终端判定无需获取新的定时提前量,并在所述新的分量载波上,使用其所属的分量载波组的定时提前量确定上行定时,进而发送上行信号;如果所述新的分量栽波不属于已上行同步的任何一个分量载波组,则所述用户终端判定需要获取新的定时提前量,并在所述新的分量载波上,使用所述新的定时才是前量确定上行定时,进而发送上行信号。 When the user terminal according to the configuration information determining whether to obtain new timing advance, determines the new uplink component carriers belonging to a component carrier group of synchronization, if said new uplink component carrier belonging to a synchronization component carrier group, the user terminal is determined without obtaining a new timing advance, and on said new component carrier, using the timing of the component carrier group to which it belongs is determined uplink timing advance, in turn sends an uplink signal; if the new component does not belong to plant wave uplink component carrier of any one set of synchronization, the terminal determines that the user needs to obtain a new timing advance, and the new component carriers, the new use of timing is before determining the amount of uplink timing, and then transmit the uplink signal.

进一步地,当所述用户终端在所述新的分量载波上发起随机接入并获取新的定时提前量后,将所述分量载波组的配置信息中,所述新的分量载波所属的分量载波组标记为已上行同步,并将获取的所述新的定时提前量作为该分量载波组的定时提前量。 Further, when the user terminal initiates the random access on said new component carrier and obtain a new timing advance, the configuration information of the component carrier group in the component carrier belonging to the new component carriers group marked as uplink synchronization and obtain the new timing advance as the timing of the advance of the component carrier group.

进一步地,所述定时提前量的配置信息包含在包含小区无线资源配置信息或小区栽波聚合配置信息的系统信息块中,所述系统信息块在物理下行共享信道上发送。 Further, the timing advance is included in the configuration information comprises a system information block cell radio resource configuration information, or planted wave polymerizable cell configuration information, the system information block transmitted on a physical downlink shared channel.

进一步地,所述定时提前量的指示信息包括指示所述用户终端使用已获 Further, the timing advance indication information indicating that the user terminal comprises been used

得的某个定时提前量,或者不能使用已获得的任何一个定时提前量的信息; Timing was an advance, or can not use any information of a timing advance has been obtained;

当所述用户终端根据所述指示信息决定是否需要获取新的定时提前量时,如果所述指示信息指示所述用户终端使用已获得的某个定时提前量,则所述用户终端判定无需在该新的分量载波上发起随才几接入,在新的分量载波上,使用所述已获得的定时提前量确定上行定时,进而发送上行信号;如果所述指示信息指示所述用户终端不能使用已获得的任何一个定时提前量,则所述用户终端判定在所述新的分量载波上需要发起随机接入以获得一个新的定时提前量,并在所述新的分量载波上,使用新的定时提前量确定上行定时, 进而发送上行信号。 When the user terminal according to the determined information indicating whether to obtain new timing advance, if the indication information indicates that the user terminal uses a certain timing advance has been obtained, then the user terminal is determined without the initiating timing of a new component carriers with access only a few, on the new component carriers, using the acquired uplink timing advance is determined, and then transmits an uplink signal; if the indication information indicates that the user terminal is not available any of a timing advance is obtained, then the user terminal is determined on the new component needs to initiate a random access carrier to obtain a new timing advance, and the new component carriers, the use of a new timing determining the uplink timing advance, and then transmits the uplink signal.

进一步地,所迷定时提前量的指示信息包含在所述基站为所述用户终端调度新的分量载波的无线资源控制信令中。 Further, the fans timing advance indication information included in the scheduling base station to the user terminal the new component carrier radio resource control signaling.

进一步地,当所述系统信息中包含所述定时提前量的配置信息、并且所述基站又发送了所述定时提前量的指示信息时,所述用户终端优先以所述定时提前量的指示信息为准。 When Further, when the system information includes configuration information of said timing advance, and the base station in turn transmits the timing advance information indicating the priority to the user terminal indicating a timing advance information prevail.

进一步地,当所述用户终端判定需要获取新的定时提前量时,采用基于竟争的或基于非竟争的随机接入方式在所述新的分量载波上发起随机接入; 当所述用户终端采用基于非竟争的随机接入方式时,所述基站通过为所述用户终端调度新的分量载波的无线资源控制信令指示专用的随积4妄入前导和物理随机接入信道掩码,所述用户终端根据所述随机接入前导和物理随机接入信道掩码,并结合所述新的分量载波上的随机接入配置参数,选择物理随机接入信道发送专用的随机接入前导。 Further, when the user terminal is determined to obtain new timing advance, or initiating competition-based random access on said new component carrier based on non-competitive random access manner; when the user terminal using a non-competitive manner based random access, the base station through the user terminal to schedule a new component carriers dedicated RRC signaling indicates jump over product 4 into a preamble and a physical random access channel mask the user terminal random access channel mask, in combination with the new parameters on the random access configuration component carriers, select a physical random access channel transmission according to the random access preamble and a physical dedicated random access preamble .

进一步地,所述用户终端在所述新的分量载波上发随机接入时,基于对时分双工模式下的新的分量载波、或对基于频分双工模式下的新的上行分量载波对应的下行分量载波的下行同步的子帧起始位置发送随机接入前导, Furthermore, when the user terminal send a random access on the new component carriers, the new component carriers based on the time division duplex mode, or the corresponding uplink component carrier based on the new frequency division duplex mode downlink synchronization sub downlink component carrier frame start position of the random access preamble transmission,

并假设定时提前量为0; And assuming that timing advance is 0;

所述用户终端在所述新的分量载波上发送上行信号时,根据所述新的分量载波的下行定时和所述新的定时提前量确定上行定时。 When the user terminal transmits an uplink signal on said new component carrier, according to the downlink timing of the new component carrier and said new timing advance is determined uplink timing.

进一步地,所述用户终端在所述新的分量载波上发起随机接入时,基于初始接入所下行同步的子帧起始位置发送随机接入前导,并假设定时提前量为0; Furthermore, when the user terminal initiates a random access on the new component carriers, the synchronization sub-frame start position based on an initial transmission of the downlink access random access preamble, and assuming that timing advance is 0;

所述用户终端在所述新的分量载波上发送上行信号时,根据初始接入的下行定时和所述新的定时提前量确定上行定时。 When the user terminal transmits an uplink signal on said new component carrier, according to the downlink timing and the initial access of the new timing advance is determined uplink timing.

本发明提供的载波聚合系统中不同分量载波上的定时提前量的获取方法,可实现基于小区的(cell-specific)或基于用户终端的(UE-specific )不同分量载波上相同或是不同定时提前量的灵活配置,同时减小随机接入等上行同步建立和维持的开销。 The present invention provides a carrier aggregation system in different component carriers on the timing method of obtaining advance may be achieved based on the cell (cell-specific) or based on the user terminal on the same or different component carriers different timings (UE-specific) in advance the amount of flexible configuration, while reducing the random access and the like to establish and maintain uplink synchronization overhead.

附图说明 BRIEF DESCRIPTION

图1是LTE系统基于竟争的随机接入过程的示意图; 1 is a schematic of competing random access procedure based LTE system;

图2是定时提前量的示意图; FIG 2 is a schematic timing advance;

图3是LTE-A系统载波聚合示意图。 FIG 3 is a LTE-A carrier aggregation system schematic.

具体实施方式 Detailed ways

本发明提供的载波聚合系统中不同分量载波上的定时提前量的获取方法,可以采用如下方式: The present invention provides a carrier aggregation system in different component carriers on a timing advance acquisition method can be used in the following manner:

(一)基站在系统信息中携带各分量载波的定时提前量的配置信息,例如,本小区各分量载波是否使用相同的定时提前量的信息。 (A) carrying the timing of each base station in the system information of the component carrier configuration information in advance in an amount of, for example, whether each component carrier of the present cell using the same timing advance information.

所述用于指示各分量载波是否使用相同的定时提前量的系统信息为1比特,该比特信息为O(或1 )表示各分量载波使用相同的定时提前量,为1 (或0)表示使用不同的定时提前量。 The system information is used to indicate whether the respective component carriers with the same timing advance is 1 bit, the bit information is O (or 1) represents each component carrier with the same timing advance value is 1 (or 0) is used different timing advance. 所述定时提前量的配置信息可以承载于包含小区无线资源配置信息或小 The timing advance information may be carried in the configuration of radio resource configuration information includes a cell or small

区载波聚合配置信息的系统信息块SIB中,所述SIB在物理下行共享信道上发送。 System information block (SIB) configuration information region in carrier aggregation, the SIB transmitted in a physical downlink shared channel.

所述各分量载波是指TDD模式下的分量栽波,或FDD模式下的上行分 The carrier component refers to each of the uplink component waves planted in TDD mode or FDD mode sub

量载波。 The amount of the carrier.

TDD模式下,所述系统信息在所有分量栽波或部分分量载波上广播; FDD模式下,所述系统信息在所有下行分量载波或部分下行分量载波上广播。 TDD mode, the system information broadcast on all or part of the components of the component carrier wave planted; FDD mode, the system information broadcast on all downlink component carrier or the downlink component carrier part.

用户终端通过初始接入(initial access),获得一个定时提前量,并读取 A user terminal via an initial access timing advance (initial access), is obtained, and reading

基站广播的系统信息,包括小区各分量载波是否使用相同的定时提前量的信台 System information broadcast by the base station, each comprising a cell component carriers with the same timing advance letters station

用户终端在已上行同步的分量载波上,根据定时提前量确定上行定时, 发送上行信号。 The user terminal has uplink component carrier synchronization, timing advance is determined according to uplink timing, uplink signal transmission.

当基站调度用户终端在一个新的分量载波上发送上行信号时,用户终端根据所述系统信息中各分量载波的定时提前量的配置信息,决定是否需要获取新的定时提前量,如果需要,则在新的分量载波上发起随机接入。 When the base station schedules user terminal sends an uplink signal in a new component carrier, the user terminal based on the timing of each component carrier in advance of the information system configuration information, determine whether to obtain new timing advance, if desired, initiating the random access on the new component carriers.

如果所述配置信息指示本小区各分量载波使用相同的定时提前量,则用户终端在新的分量载波上无需发起随机接入。 If the configuration information indicates each component carrier of the present cell using the same timing advance, the user terminal on the new component carrier without initiating random access. 用户终端在新的分量载波上, 使用初始接入所上行同步的分量载波上的定时提前量确定上行定时,进而发送上行信号。 The user terminal on the new component carriers, the initial access using the timing synchronization on the uplink component carrier is determined uplink timing advance, and then transmits the uplink signal.

如果所述配置信息指示本小区各分量载波使用不同的定时提前量,则用户终端在新的分量载波上需要发起随机接入以获得一个新的定时提前量。 If the configuration information indicates that the present cell uses different carriers each component timing advance, the user terminal on the new component needs to initiate a random access carrier to obtain a new timing advance. 用户终端在新的分量载波上,使用新的定时提前量确定上行定时,进而发送上行信号。 The user terminal on the new component carriers, the new timing advance is determined uplink timing, and then transmit the uplink signal.

(二)基站在系统信息中携带各分量载波的定时提前量的配置信息,例如,指示本小区哪些分量载波使用相同的定时提前量。 (B) the timing of each component carrier carrying the base station in the system configuration information in advance in the amount of information, e.g., indicating which component carrier of the present cell using the same timing advance.

所述用于指示哪些分量载波使用相同的定时提前量的系统信息为分量载波组的配置信息,使用相同定时提前量的分量载波组成一个分量载波组,使用不同定时提前量的分量载波属于不同的分量栽波组。 Means for indicating which component carrier the same timing advance information to the system configuration information of the component carrier groups, the same components of the timing advance of a carrier composed of a component carrier group, the timing advance to use a different component carriers belonging to different planted wave component group. 每个分量载波组至少有一个分量载波。 Each component carrier group has at least one component carrier.

所述定时提前量的配置可以承载于包含小区无线资源配置信息或小区载 The timing advance can be arranged bearer configuration information is contained in a cell or a cell comprising a radio resource

波聚合配置信息的系统信息块SIB中,所述SIB在物理下行共享信道上发送。 The system information block SIB wave configuration information in the polymerization, the SIB transmission on a physical downlink shared channel.

所述分量载波是指TDD模式下的分量栽波,或FDD模式下的上行分量载波。 It refers to the component carrier in the uplink component carrier wave component planted in TDD mode or FDD mode.

TDD模式下,所述系统信息在所有分量载波或部分分量栽波上广播; FDD模式下,所述系统信息在所有下行分量载波或部分下行分量载波上广播。 TDD mode, the system information broadcast on all component carriers or a portion of plant wave component; FDD mode, the system information broadcast on all downlink component carrier or the downlink component carrier part.

用户终端通过初始接入,获得一个定时提前量,并读取基站广播的系统信息,包括小区哪些分量载波使用相同的定时提前量的信息。 An initial access by the user terminal to obtain a timing advance, and read system information broadcast by the base station, comprising a cell which component carriers with the same timing advance information.

用户终端在已上行同步的分量载波上,根据定时提前量确定的上行定时, 发送上行信号。 The user terminal has synchronized uplink component carrier, uplink timing in accordance with the determined timing advance, uplink signal transmission.

用户终端根据分量载波组的配置信息,将已上行同步的分量载波所属的分量载波组标记为已上行同步,并将获得的定时提前量作为该分量载波组的定时提前量。 The user terminal according to the configuration information of the component carrier group, which has been synchronized uplink component carrier belonging to the component carrier group is marked as uplink synchronization, the timing and the amount obtained in advance as the timing of the advance of the component carrier group.

当基站调度用户终端在一个新的分量载波上发送上行信号时,用户终端根据所述系统信息中的各分量载波的定时提前量的配置信息,即分量载波组的配置信息,判断新的分量栽波是否属于已上行同步的某个分量栽波组,决定是否需要在新的分量载波上发起随机接入。 When the base station schedules user terminal sends an uplink signal in a new component carrier, the user terminal in accordance with the timing of each component carrier in advance information system configuration information, i.e. configuration information of the component carrier group, it is determined the new plant component wave component is part of a uplink synchronization has been planted wave group, decide whether to initiate a random access on the new component carriers.

如果新的分量载波属于已上行同步的某个分量载波组,则用户终端在新的分量载波上无需发起随机接入。 If the new uplink component carrier belonging to a component carrier group synchronization, the user terminal on the new component carrier without initiating random access. 用户终端在新的分量载波上,^使用其所属的分量载波组的定时提前量确定上行定时,进而发送上行信号。 User terminal in a new component carrier, using the timing ^ component carrier group to which it belongs is determined uplink timing advance, and then transmits the uplink signal.

如果新的分量载波不属于已上行同步的任何一个分量载波组,则用户终端在新的分量载波上需要发起随机接入以获得一个新的定时提前量。 If the new component carrier does not belong to any of the uplink synchronization of a component carrier group, the user terminal on the new component needs to initiate a random access carrier to obtain a new timing advance. 当随机接入过程完成后,根据分量载波组的配置信息,将该分量载波所属的分量载波组标记为已上行同步,并将获得的新的定时提前量作为该分量载波组的定时提前量。 When the random access procedure is completed, according to the configuration information of the component carrier groups, and the component carrier of the component carrier group tag belongs advance as uplink synchronization, and the new timing advance is obtained as the timing of the component carrier group. 用户终端在新的分量载波上,使用新的定时提前量确定上行定时,进而发送上行信号。 The user terminal on the new component carriers, the new timing advance is determined uplink timing, and then transmit the uplink signal.

(三)基站向用户终端发送定时提前量的指示信息,指示用户终端使用该用户终端已获得的某个定时提前量,或者不能使用已获得的任何一个定时提前量。 (Iii) a terminal station transmits timing advance information to a user indication, the user terminal uses a timer indicating that the user terminal has obtained advance, or can not use any of the timing advance is obtained.

用户终端通过初始接入,获得一个定时提前量。 An initial access by the user terminal to obtain a timing advance.

在已上行同步的分量载波上,用户终端根据定时提前量确定的上行定时, 发送上行信号。 On the uplink component carrier has been synchronized, the user terminal uplink timing in accordance with the determined timing advance, uplink signal transmission.

当基站调度用户终端在一个新的分量载波上发送上行信号时,指示用户终端使用该用户终端已获得的某个定时提前量,或者不能使用已获得的任何一个定时提前量。 When the base station schedules user terminal sends an uplink signal in a new component carrier, indicating the timing of the user terminal uses a user terminal has obtained advance, or can not use any of the timing advance is obtained.

如果基站指示用户终端使用已获得的某个定时提前量,则用户终端根据 If the base station instructs the user equipment acquired using a certain timing advance, according to the user terminal

所述指示信息决定无需在该新的分量载波上发起随机接入;用户终端在新的分量载波上,使用所述指示信息指示的定时提前量确定上行定时,进而发送上行信号。 Without indicating the decision to initiate a random access information on the new component carrier; user terminal in a new component carrier, using the information indicating the timing indicated by the determined uplink timing advance, and then transmits the uplink signal.

如果基站指示用户终端不能使用已获得的任何一个定时提前量,则用户终端根据所述指示信息在新的分量载波上需要发起随机接入以获得一个新的定时提前量。 If the base station instructs the user equipment can not use any of the timing advance has been obtained, the user terminal according to the indication information on the new component needs to initiate a random access carrier to obtain a new timing advance. 用户终端在新的分量载波上,使用新的定时提前量确定上行定时,进而发送上行信号。 The user terminal on the new component carriers, the new timing advance is determined uplink timing, and then transmit the uplink signal.

上述指示信息可以通过基站给用户终端调度新的分量栽波的RRC (Radio Resource Control,无线资源控制)信令发送给用户终端。 The indication information to the user terminal by the scheduling base station new plant component waves RRC (Radio Resource Control, RRC) signaling to the user terminal.

综上,方法(一)和方法(二)是基于小区的(cell-specific),方法(三) 是基于用户终端的(UE-specific)。 In summary, the method (a) and (b) is a cell-based (cell-specific), (3) methods based on the user terminal (UE-specific). 其中,方法(一)和方法(三),或者方法(二)和方法(三)可以配合使用,且对某个分量载波,基于用户终端 Wherein the method (a) and (c), or a method (ii) and (iii) may be used in conjunction with, and for certain component carrier, based on a user terminal

的定时提前量的指示信息优先级高于基于小区的定时提前量的配置信息。 The timing advance information indicating configuration information of higher priority than the timing advance based on the cell. 例如,当基站在系统信息中指示了基于小区的定时提前量的配置信息,如各分量载波是否使用相同的定时提前量,或本小区哪些分量载波使用相同的定时 For example, when the base station indicates the amount of configuration information based on the timing advance of a cell in system information, such as the respective component carriers with the same timing advance, or the present cell which component carriers with the same timing

提前量,又在RRC信令中对某个用户终端在某个分量载波上获取定时提前量进行指示时,该用户终端应以基于用户终端的RRC信令中的指示为准。 Advance, and the terminal acquires the timing advance instructs the user terminal to be based on a user terminal in RRC signaling indicating a component carrier in the subject for a user in the RRC signaling.

当基站调度用户终端在一个新的分量载波上发送上行信号,并且用户终端需要在新的分量载波上发起随机接入以获得新的定时提前量时,用户终端可以采用基于竟争的或基于非竟争的随机接入方式。 When the base station schedules user terminal sends an uplink signal in a new component carrier, and the user terminal needs to initiate a random access on the new component carrier to obtain a new timing advance, the user terminal may be based on competitive or non- a competitive random access manner. 当用户终端采用基于非竟争的随机接入时,基站通过给该用户终端调度新的分量载波的RRC信令指示专用的随机接入前导和物理随机接入信道掩码(PRACH Mask index)。 When the user terminal using a non-competitive-based random access, the base station new scheduling the terminal RRC signaling indicating the component carrier dedicated random access preamble and a physical random access channel mask (PRACH Mask index) through to the user. 用户终端结合新的分量载波上的随机接入配置参数,选择物理随机接入信道发送专用的随枳j妄入前导。 The user terminal random access configuration parameters in conjunction with the new component carriers, select a physical random access channel transmission over a dedicated preamble orange j jump into.

在新的分量栽波上,用户终端可以基于对该分量载波(TDD模式)或该上行分量载波对应的下行分量栽波(FDD模式)下行同步的子帧起始位置发送随机接入前导(假设定时提前量为0)。 Planted on a new wave component, based on the user terminal downlink component carrier of the component (TDD mode) or the corresponding uplink component carrier wave planted (FDD mode) the start position of the synchronization downlink subframe transmits a random access preamble (assuming timing advance is 0). 用户终端在各新的分量载波上按照各自的下行定时和定时提前量确定各分量载波上的上行定时,进而发送各分量载波上的上行信号。 User terminal in accordance with their downlink timing and timing advance determining uplink timing on each component carrier each new component carriers, the uplink transmission signal in turn on each component carrier.

所谓基于下行同步的子帧起始位置发送随机接入前导(假设定时提前量为0),是指对于FDD模式,随机接入前导在下行同步的子帧起始位置开始发送;对于TDD模式,随机接入前导格式0~3在下行同步的子帧起始位置开始发送,随机接入前导格式4在下行同步的时隙UpPTS的结束位置前5158 个Ts开始发送。 The so-called sub-frame start position based on the downlink synchronization transmitting a random access preamble (assuming a timing advance is 0), refers to the FDD mode, a random access preamble in a downlink sub-frame transmission synchronization start position; for TDD mode, a random access preamble format 0 to 3 in the downlink sub-frame transmission synchronization start position of the random access preamble format 4 before the end position of the UpPTS timeslot in the downlink synchronization Ts 5158 starts transmission. 其中,Ts二l/(15000x2048)秒。 Wherein, Ts two l / (15000x2048) seconds.

在新的分量载波上,用户终端也可以基于初始接入所下行同步的子帧起始位置发送随机接入前导(假设定时提前量为0)。 On the new component carriers, the user terminal may also start position synchronized subframe transmitting a random access preamble (assuming a timing advance of 0) based on the initial downlink access. 用户终端在各新的分量栽波上按照初始接入的下行定时,和各新的分量载波上的定时提前量确定各分量载波上的上行定时,进而发送上行信号。 The user terminal determines the uplink timing advance on each component carrier in accordance with the initial access downlink timing, and the timing of each of the new component carriers on each component of the new wave planted, and further transmits the uplink signal.

下面将结合实施例和附图详细描述本发明。 The following Examples and figures The invention is described in detail. 实施例一假定一个载波聚合的LTE-A系统,工作在TDD模式下,有5个分量载波CC 1~5。 Example of a polymeric carrier assume a LTE-A system, operating in TDD mode, there are 5 component carriers CC 1 ~ 5.

基站在各分量载波的系统信息中用1比特(该比特为1)指示本小区各分量载波使用不同的定时提前量。 The base station in the system information of each component carrier by one bit (the bit is 1) indicates each component carrier of the present cell using different timing advance.

用户终端在初始接入时,先在CC1上完成下行同步和随机接入,获得下行定时DLtimingl,以及定时提前量TA1,并读取CC1上的系统信息,包括系统信息中各分量载波定时提前量的lbit配置信息。 When a user terminal initially accesses, to complete the downlink synchronization over the CC1 and the random access, downlink timing obtained DLtimingl, and the timing advance TA1, and the CC1 read system information, including system information of each component carrier timing advance the lbit configuration information.

用户终端在已上行同步的分量载波CC1上,按照下行定时DL timingl 和定时提前量TA1确定的上行定时,发送上行信号。 User terminal has uplink synchronization on the component carrier CC1, and DL timingl downlink timing according to the timing advance TA1 determined uplink timing, uplink signal transmission.

当基站调度用户终端在CC3上发送上行信号时,用户终端根据所述系统信息中各分量载波定时提前量的配置信息,决定需要在CC3上发起随机接入。 When the base station schedules user terminal sends an uplink signal in the CC3, a user terminal according to the amount of configuration information of each component carrier timing advance information the system determines the need to initiate a random access on CC3.

用户终端先在CC3上完成下行同步,获得下行定时DLtiming3,并读取CC3上的系统信息。 To complete the user terminal on the downlink synchronization CC3, obtained downlink timing DLtiming3, and read system information on CC3. 再根据系统信息中的随机接入配置参数,在CC3上发起基于竟争的随机接入过程,得到一个新的定时提前量TA3。 Rearrangement information according to the random access system parameters, initiating a random access procedure based on the CC3 competitive, get a new timing advance TA3.

或者,基站在调度CC3给用户终端时,在RRC信令中配置了专用的随机接入前导和物理随才几接入信道掩码(PRACH Mask index )。 Alternatively, the base station scheduling CC3 to the user terminal, the RRC dedicated signaling configuration and the physical random access preamble with only a few masks access channel (PRACH Mask index). 用户终端结合CC3上的随机接入配置参数,在CC3上发起基于非竟争的随机接入过程,得到一个新的定时提前量TA3。 The user terminal random access configuration parameters in conjunction with the CC3, CC3 initiated based on a non-competitive random access procedure to obtain a new timing advance TA3.

用户终端在新的分量载波上,按照下行定时DLtiming3,和新的定时提前量TA3确定上行定时,进而发送上行信号。 The user terminal on the new component carriers according downlink timing DLtiming3, and the new timing advance is determined TA3 uplink timing, and thus transmits the uplink signal.

实施例二 Second Embodiment

假定一个载波聚合的LTE-A系统,工作在FDD模式下,有2个下行分量载波D1,D2,和2个上行分量载波U1,U2。 Assume a LTE-A carrier aggregation system operating in FDD mode, there are two downlink component carriers D1, D2, and two uplink component carrier U1, U2.

基站在D1,D2 (或只在D1 )的系统信息中用1比特(该比特为0)指示本小区各分量载波使用相同的定时提前量。 The base station D1, D2 (or only D1) system information with 1 bit (the bit is 0) indicates each component carrier of the present cell using the same timing advance.

户终端在初始接入时,先在D1和U1上完成下行同步和随机接入,获得下行定时DL timingl,以及定时提前量TA1,并读取D1上的系统信息,包括系统信息中各分量栽波定时提前量的lbit配置信息。 User terminal during an initial access is completed first D1 and U1 in the downlink and synchronous random access, downlink timing obtained DL timingl, the amount and the timing advance TA1, and reads system information on the D1, the components including the system information plant wave timing advance lbit configuration information.

用户终端在已上行同步的Ul上,按照下行定时DL timingl和定时提前量TA1确定的上行定时,发送上行信号。 The user terminal on the uplink synchronization has been Ul, DL timingl and downlink timing according to the timing advance TA1 determined uplink timing, uplink signal transmission.

当基站调度用户终端在U2上发送上行信号时,用户终端根据所述系统信息中各分量载波定时提前量的配置信息,决定不需要在U2上发起随机接入。 When the base station schedules user terminal sends an uplink signal in the U2, a user terminal according to the system information of each component carrier timing advance configuration information required to initiate a random access decision on U2.

用户终端先在D2上完成下行同步,获得下行定时DL timing2,并读取D2上的系统信息。 To complete the user terminal on the downlink synchronization D2, obtained downlink timing DL timing2, and reads system information on the D2.

用户终端在U2上,按照下行定时DL timing2,和定时提前量TA1确定的上行定时,发送上行信号。 On the user terminal U2, in accordance with downlink timing DL timing2, and the timing advance TA1 determined uplink timing, uplink signal transmission.

或者,D1,D2以及U1, U2是严格时频同步的,则用户终端在U2上, 按照Dl上的下行定时DL timingl,和Ul上的定时提前量TA1确定的上行定时,发送上行信号。 Alternatively, D1, D2 and U1, U2 is the synchronous frequency, in the user terminal U2, in accordance with the downlink timing DL timingl Dl, Ul amount and timing on uplink timing advance TA1 strict time determination, the uplink signal transmission.

实施例三 Third Embodiment

假定一个载波聚合的LTE-A系统,工作在TDD模式下,有4个分量载波CC0-3。 Assume a LTE-A carrier aggregation system operating in TDD mode, there are four component carriers CC0-3. 其中,CC0和CC1有相同的定时提前量,为分量载波组0; CC2 和CC3有相同的定时提前量,为分量载波组l。 Wherein, CC0 and CC1 have the same timing advance for the component carrier group 0; CC2, and CC3 have the same timing advance for the component carrier group l.

基站在每个分量载波的系统信息中指示本小区哪些分量栽波使用相同的定时提前量。 This indicates the cell base station in the system information of each component carrier waves in which components with the same planted timing advance. 具体地,可以在小区无线资源配置信息或小区栽波聚合配置信息中指示CC0和CC1为分量载波组0; CC2和CC3为分量载波组1。 Specifically, cell configuration information, or planted polymerization wave configuration information indicating component carrier CC1 and CC0 0 in a cell a radio resource group; and the CC2 and the CC3 is a component carrier group.

用户终端在初始接入时,先在CC3上完成下行同步和随机接入,获得下行定时DLtiming3,以及一个定时提前量TA3,并读取CC3上的系统信息,包括系统信息中各分量载波的定时提前量的配置信息,即分量载波组的配置信息。 When a user terminal initially accesses, to complete the downlink synchronization on CC3 and random access, downlink timing obtained DLtiming3, and TA3 timing of a timing advance, and read system information on CC3, including the component carrier system information advance configuration information, i.e. configuration information of the component carrier group.

用户终端根据分量载波组的配置信息,将已上行同步的CC3所属的分量载波组1标记为已上行同步,并将获得的定时提前量TA3作为该分量载波组的定时提前量。 The user terminal according to the configuration information of the component carrier group, the group has an uplink component carrier CC3 synchronization marks belongs as uplink synchronization, the timing advance and TA3 obtained as the timing of the advance of the component carrier group.

用户终端在已上行同步的CC3上,按照下行定时DLtiming3,和定时提前量TA3确定的上行定时,发送上行信号。 The user terminal on the uplink synchronization has been the CC3, in accordance with downlink timing DLtiming3, timing advance and TA3 identified uplink timing, uplink signal transmission.

当基站调度用户终端在CC2上发送上行信号时,用户终端根据所述分量载波组的配置信息,判断CC2属于已上行同步的分量载波组1,决定不需要在CC2上发起随机接入。 When the base station schedules user terminal sends an uplink signal on the CC2, the user terminal according to the configuration information of the component carrier group belonging to the uplink synchronization is determined CC2 component carrier group 1, does not need to decide on a random access to initiate CC2.

用户终端先在CC2上完成下行同步,获得下行定时DLtiming2,并读取CC2上的系统信息。 A user terminal to complete the downlink synchronization on CC2 obtained downlink timing DLtiming2, and reads system information on the CC2.

用户终端在CC2上,按照下行定时DL timing2,和定时提前量TA3确定的上行定时,发送上行信号。 On the CC2 user terminal, in accordance with downlink timing DL timing2, timing advance and TA3 identified uplink timing, uplink signal transmission.

或者,CC3, CC2是严格时频同步的,则用户终端在CC2上,按照CC3 上的下行定时DL timing3,和CC3上的定时提前量TA3确定的上行定时, 发送上行信号。 Alternatively, CC3, the CC2 is strictly time-frequency synchronization, the user terminal on the CC2, CC3 according to the timing of the downlink DL timing3, CC3 and timing advance on the determined uplink timing TA3, an uplink transmission signal.

当基站调度用户终端在CC0 (或CC1)上发送上行信号时,用户终端才艮据所述分量载波组的配置信息,判断CCO不属于已上行同步的分量栽波组1, 决定需要在CC0上发起随机接入。 When the base station schedules user terminal sends an uplink signal on CC0 (or CC1), the user terminal only according to the configuration information component Burgundy carrier groups, is determined CCO has not synchronized uplink component planted wave group 1, the decision on the need CC0 initiate a random access.

用户终端先在CCO上完成下行同步,获得下行定时DLtimingO,并读取CCO上的系统信息。 To complete the user terminal on the downlink synchronization CCO obtain downlink timing DLtimingO, and reads system information on the CCO. 再根据系统信息中的随机接入配置参数,在CC0上发起基于竟争的随机接入过程,得到一个新的定时提前量TA0。 Rearrangement information according to the random access system parameters, initiating a random access procedure is based on competitive CC0, to obtain a new timing advance TA0.

或者,基站在调度CCO给用户终端时,在RRC信令中配置了专用的随机接入前导和物理随才;U妄入信道掩码(PRACH Mask index)。 Alternatively, the base station to the user terminal, the RRC dedicated signaling configuration and the physical random access preamble with only scheduling CCO; U jump into the mask channel (PRACH Mask index). 用户终端结合cco上的随机接入配置参数,在cco上发起基于非竟争的随机接入过程,得 Binding the user terminal on a random access cco configuration parameters, based on non-competitive initiate random access procedure, get on cco

到一个新的定时提前量TA0。 To a new timing advance TA0.

用户终端根据分量载波组的配置信息,将已上行同步的CC0所属的分量载波组0标记为已上行同步,并将获得的定时提前量TA0作为该分量载波组的定时提前量。 The user terminal according to the configuration information of the component carrier group in the component carrier group has uplink synchronization mark 0 CC0 belongs as uplink synchronization, and the timing advance TA0 obtained as the timing of the advance of the component carrier group.

用户终端在CC0上,4姿照下行定时DL timing0,和定时4是前量TA0确定的上行定时,发送上行信号。 On the user terminal CC0, downlink timing according pose 4 DL timing0, the timing and the amount of the former 4 is TA0 determines uplink timing of the uplink transmission signal.

实施例四 Fourth Embodiment

假定一个载波聚合的LTE-A系统,工作在FDD模式下,有3个下行分量载波DO, Dl, D2,和2个上行分量载波UO, Ul, U2。 Assume a LTE-A carrier aggregation system operating in FDD mode, there are three downlink component carriers DO, Dl, D2, and two uplink component carrier UO, Ul, U2.

户终端在初始接入时,先在D1和U1上完成下行同步和随机接入,获得下行定时DLtimingl,以及定时提前量TA1,并读取D1上的系统信息。 User terminal during an initial access is completed first D1 and U1 in the downlink and synchronous random access, downlink timing obtained DLtimingl, and the timing advance TA1, and the read system information D1.

用户终端在已上行同步的Ul上,按照下行定时DL timingl,和定时提前量TA1确定上行定时,发送上行信号。 The user terminal on the uplink synchronization has been Ul, in accordance with downlink timing DL timingl, the amount and timing determined uplink timing TA1 transmits an uplink signal in advance.

当基站调度用户终端在U2上发送上行信号时,通过RRC信令指示用户终端在U2上不能使用该用户终端已获得的任何一个定时提前量。 When the base station schedules user terminal sends an uplink signal in the U2, indicating that the user can not use any terminal RRC signaling a timing advance that the user terminal has been obtained on U2. 用户终端需要在U2上发起随机接入。 The user terminal needs to initiate a random access on U2.

用户终端先在D2上完成下行同步,获得子帧起始位置DL timing2,并读取D2上的系统信息。 To complete the user terminal on the downlink synchronization D2, the sub-frame start position obtained DL timing2, and reads system information on the D2. 再根据系统信息中的随机接入配置参数,在U2上发起基于竟争的随机接入过程,得到一个新的定时提前量TA2。 Rearrangement information according to the random access system parameters, initiating a random access procedure is based on competitive U2, to obtain a new timing advance TA2.

或者,基站在调度U2给用户终端时,在RRC信令中配置了专用的随机接入前导和物理随才;U妄入信道掩码(PRACH Mask index)。 Alternatively, the base station to the user terminal U2 scheduling, the RRC dedicated signaling configuration and the physical random access preamble with only; jump into the U-channel mask (PRACH Mask index). 用户终端结合D2上的随机接入配置参数,在U2上发起基于非竟争的随机接入过程,得到一个新的定时提前量TA2。 Binding the user terminal on a random access configuration parameters D2, U2 initiated based on a non-competitive random access procedure to obtain a new timing advance TA2.

用户终端在U2上,按照下行定时DLtiming2,和定时提前量TA2确定上行定时,发送上行信号。 On the user terminal U2, in accordance with downlink timing DLtiming2, and determining the timing advance TA2 uplink timing, uplink signal transmission. 当基站调度用户终端在U0上发送上行信号时,通过RRC信令指示用户终端在U0上使用该用户终端已获得的定时提前量TA1。 When the user terminal sends the base station schedules uplink signal on U0, indicating that the user terminal uses RRC signaling timing of the user terminal has been obtained in advance U0 TA1. 用户终端不需要在UO上发起随机接入。 The user terminal does not need to initiate a random access on the UO.

用户终端先在DO上完成下行同步,获得下行定时DL timingO,并读取DO上的系统信息。 A user terminal to complete the DO downlink synchronization, downlink timing obtained DL timingO, and reads system information on the DO.

用户终端在UO上,按照下行定时DL timingO,和信令指示的定时提前量TA1确定上行定时,发送上行信号。 User terminal over a UO, downlink timing according to the timing of DL timingO, indication and signaling uplink timing advance TA1 determines, an uplink transmission signal.

或者,Dl, DO是严格时频同步的,则用户终端在UO上,按照在Dl上的下行定时DLtimingl,和信令指示的TAl确定上行定时,发送上行信号。 Alternatively, Dl, the DO is strictly time-frequency synchronization, the user terminal on UO, TAl indicated in accordance with downlink timing DLtimingl of Dl, and signaling uplink timing is determined, the uplink transmission signal.

实施例五 Fifth Embodiment

假定一个载波聚合的LTE-A系统,工作在TDD模式下,有5个分量载波CC0〜4。 Assume a LTE-A carrier aggregation system operating in TDD mode, there are 5 component carriers CC0~4. 其中,CC0和CC1有相同的定时提前量,为分量载波组O; CC2 为分量载波组l; CC3和CC4有相同的定时提前量,为分量栽波组2。 Wherein, CC0 and CC1 have the same timing advance for the component carrier group O; CC2 component carrier group l; CC3 and CC4 have the same timing advance for the plant component 2 wave group.

基站在每个分量载波的系统信息中指示本小区哪些分量载波使用相同的定时提前量。 This indicates the cell base station in the system information of each component carrier in which component carriers with the same timing advance. 具体说,是在小区无线资源配置信息或小区载波聚合配置信息中指示CC0和CC1为分量载波组O; CC2为分量载波组1; CC3和CC4为分量载波组2。 Specifically, the cell is disposed in a cell or radio resource information indicated in the configuration information carrier aggregation CC0 and CC1 is the component carrier group O; CC2 component carrier group 1; CC3 and CC4 for the component carrier group 2.

用户终端在初始接入时,先在CCO上完成下行同步和随机接入,获得下行定时DLtimingO,以及一个定时提前量TAO,并读取CCO上的系统信息, 包括系统信息中各分量栽波的定时提前量的配置信息,即分量载波组的配置信息。 When a user terminal initially accesses, to complete the downlink synchronization on CCO and random access, downlink timing obtained DLtimingO, TAO, and a timing advance, and read the system information on the CCO, including system information of each component wave plant timing advance configuration information, i.e. configuration information of the component carrier group.

用户终端根据分量载波组的配置信息,将已上行同步的CCO所属的分量载波组0标记为已上行同步,并将获得的定时提前量TAO作为该分量载波组的定时提前量。 The user terminal according to the configuration information of the component carrier group in the component carrier group has uplink synchronization mark 0 CCO belongs as uplink synchronization, and the timing advance TAO obtained as the timing of the advance of the component carrier group.

用户终端在已上行同步的CCO上,按照下行定时DL timing0,和定时提前量TAO确定上行定时,发送上行信号。 The user terminal on the uplink synchronization has been CCO, according to the downlink timing DL timing0, the amount and timing determined TAO uplink timing, transmits an uplink signal in advance.

20当基站调度用户终端在CC1上发送上行信号时,用户终端根据所述分量载波组的配置信息,判断CCl属于已上行同步的分量载波组O,决定不需要在CC1上发起随机接入。 When the base station 20 transmits an uplink scheduling user terminals on the CC1 signal, the user terminal according to the configuration information of the component carrier group, CCl determined uplink component carrier belonging to group O synchronization, required to initiate a random access decision on CC1.

用户终端先在CC1上完成下行同步,获得下行定时DLtimingl,并读取CC1上的系统信息。 A user terminal to complete the downlink synchronization over the CC1, obtained downlink timing DLtimingl, and reads system information on the CC1.

用户终端在CC1上,按照下行定时DL timingl ,和定时提前量TA0确定上行定时,发送上行信号。 On the user terminal CC1, in accordance with downlink timing DL timingl, and timing advance TA0 determines uplink timing, uplink signal transmission.

或者,CC0, CC1是严格时频同步的,则用户终端在CC1上,按照CC0 上的下行定时DL timing0,和CC0上的定时提前量TA0确定上行定时,发送上行信号。 Alternatively, CC0, CC1 is strictly time-frequency synchronization, the user terminal on CC1, CC0 according to the timing of the downlink DL timing0, and timing advance on CC0 TA0 determines uplink timing, uplink signal transmission.

当基站调度用户终端在CC2上发送上行信号时,用户终端根据所述分量载波组的配置信息,判断CC2不属于已上行同步的分量栽波组0,决定需要在CC3上发起随机接入。 When the base station schedules user terminal sends an uplink signal on the CC2, the user terminal according to the configuration information of the component carrier group determination component CC2 does not belong to the uplink synchronization has been planted wave group 0, the decision needs to initiate a random access on CC3.

用户终端先在CC2上完成下行同步,获得下行定时DLtiming2,并读取CC2上的系统信息。 A user terminal to complete the downlink synchronization on CC2 obtained downlink timing DLtiming2, and reads system information on the CC2. 再根据系统信息中的随机接入配置参数,在CC2上发起基于竟争的随机接入过程,得到一个新的定时提前量TA2。 Rearrangement information according to the random access system parameters, initiating a random access procedure based on the CC2 competitive, get a new timing advance TA2.

或者,基站在调度CC2给用户终端时,在RRC信令中配置了专用的随机接入前导和物理随机接入信道掩码(PRACH Mask index)。 Alternatively, the base station scheduling CC2 to the user terminal in RRC signaling to configure a dedicated random access preamble and a physical random access channel mask (PRACH Mask index). 用户i冬端结合CC2上的随机接入配置参数,在CC2上发起基于非竟争的随机接入过程,得到一个新的定时提前量TA2。 I winter end user on a random access CC2 binding configuration parameters, based on CC2 initiate non-competitive random access procedure to obtain a new timing advance TA2.

用户终端根据分量载波组的配置信息,将已上行同步的CC2所属的分量载波组1标记为已上行同步,并将获得的定时提前量TA2作为该分量栽波组的定时提前量。 The user terminal according to the configuration information of the component carrier group, the group has an uplink component carrier CC2 synchronization marks belongs as uplink synchronization, and the timing advance TA2 obtained as the timing of the wave component group planted advance.

用户终端在CC2上,4安照下行定时DL timing2,和定时提前量TA2确定上行定时,发送上行信号。 On the user terminal CC2, 4 Ann downlink timing according DL timing2, and determining the timing advance TA2 uplink timing, uplink signal transmission. 当基站调度用户终端在CC3上发送上行信号时,用户终端根据所述分量载波组的配置信息,判断CC3不属于已上行同步的分量载波组0或分量载波组l,决定需要在CC3上发起随机接入。 When the base station schedules user terminal sends an uplink signal on CC3, a user terminal according to the configuration information of the component carrier group, it is determined CC3 does not belong to the uplink component carrier or a component carrier group of group 0 l synchronization needs to initiate a random decision on CC3 access.

用户终端先在CC3上完成下行同步,获得下行定时DLtiming3,并读取CC3上的系统信息。 To complete the user terminal on the downlink synchronization CC3, obtained downlink timing DLtiming3, and read system information on CC3. 再根据系统信息中的随机接入配置参数,在CC3上发起基于竟争的随机接入过程,得到一个新的定时提前量TA3。 Rearrangement information according to the random access system parameters, initiating a random access procedure based on the CC3 competitive, get a new timing advance TA3.

或者,基站在调度CC3给用户终端时,在RRC信令中配置了专用的随才几接入前导和物理随4几接入信道掩码(PRACH Mask index )。 Alternatively, the base station to the user terminal, the RRC dedicated signaling is arranged in a scheduling CC3 with only a few access preamble and a physical access channel with several mask 4 (PRACH Mask index). 用户终端结合CC3上的随机接入配置参数,在CC3上发起基于非竟争的随机接入过程,得到一个新的定时提前量TA3。 The user terminal random access configuration parameters in conjunction with the CC3, CC3 initiated based on a non-competitive random access procedure to obtain a new timing advance TA3.

用户终端根据分量载波组的配置信息,将已上行同步的CC3所属的分量载波组2标记为已上行同步,并将获得的定时提前量TA3作为该分量载波组的定时提前量。 The user terminal according to the configuration information of the component carrier group in the component carrier group 2 has uplink synchronization mark belongs CC3 as uplink synchronization, the timing advance and TA3 obtained as the timing of the advance of the component carrier group.

用户终端在CC3上,按照下行定时DL timing3,和定时提前量TA3确定上行定时,发送上行信号。 On the CC3 user terminal, in accordance with downlink timing DL timing3, and TA3 timing advance determining uplink timing, uplink signal transmission.

当基站调度用户终端在CC4上发送上行信号时,通过RRC信令指示用户终端在CC4上不能使用该用户终端已获得的任何一个定时提前量(TA0, TA2,或TA3 )。 When the base station schedules user terminal sends an uplink signal in the CC4, indicating that the user can not use any terminal RRC signaling a timing advance (TA0, TA2, TA3 or) the user terminal has been obtained on the CC4. 用户终端需要在CC4上发起随机接入。 The user terminal needs to initiate a random access on CC4.

用户终端先在CC4上完成下行同步,获得下行定时DLtiming4,并读取CC4上的系统信息。 To complete the user terminal on the downlink synchronization CC4 obtain downlink timing DLtiming4, and read system information on CC4. 再根据系统信息中的随机接入配置参数,在CC4上发起基于竟争的随机接入过程,得到一个新的定时提前量TA4。 Rearrangement information according to the random access system parameters, initiating a random access procedure is based on competitive CC4, to obtain a new timing advance TA4.

或者,基站在调度CC4给用户终端时,在RRC信令中配置了专用的随机接入前导和物理随机接入信道掩码(PRACH Mask index)。 Alternatively, the base station scheduling CC4 to the user terminal in RRC signaling to configure a dedicated random access preamble and a physical random access channel mask (PRACH Mask index). 用户终端结合CC4上的随机接入配置参数,在CC4上发起基于非竟争的随机接入过程,得到一个新的定时提前量TA4。 The user terminal random access configuration parameters in conjunction with the CC4, CC4 initiated based on a non-competitive random access procedure to obtain a new timing advance TA4.

用户终端在CC4上,按照下行定时DL timing4,和定时提前量TA4确定上行定时,发送上行信号。 CC4 on the user terminal, in accordance with downlink timing DL timing4, and determining the timing advance TA4 uplink timing, uplink signal transmission. 实施例六 Sixth Embodiment

假定一个载波聚合的LTE-A系统,工作在TDD模式下,有5个分量载波CC 1~5。 Assume a LTE-A carrier aggregation system operating in TDD mode, there are 5 component carriers CC 1 ~ 5.

基站在每个分量栽波的系统信息中用1比特(该比特为1)指示本小区各分量载波使用不同的定时提前量。 In the base station system information for each component of the plant with a wave bit (the bit is 1) indicates each component carrier of the present cell using different timing advance.

用户终端在初始接入时,先在CC1上完成下行同步和随机接入,获得下行定时DLtimingl,以及定时提前量TA1,并读取CC1上的系统信息,包括系统信息中各分量载波定时提前量的lbit配置信息。 When a user terminal initially accesses, to complete the downlink synchronization over the CC1 and the random access, downlink timing obtained DLtimingl, and the timing advance TA1, and the CC1 read system information, including system information of each component carrier timing advance the lbit configuration information.

用户终端在已上行同步的CC1上,按照下行定时DL timingl,和定时提前量TA1确定上行定时,发送上行信号。 The user terminal on the uplink synchronization has been CC1, in accordance with downlink timing DL timingl, the amount and timing determined uplink timing TA1 transmits an uplink signal in advance.

当基站调度用户终端在CC3上发送上行信号时,用户终端根据所述系统信息,决定需要在CC3上发起随机接入。 When the base station schedules user terminal sends an uplink signal in the CC3, the user terminal based on the system information, determines the need to initiate a random access on CC3.

用户终端从CC1上的系统信息中获得了CC3上的随机接入配置参数, 在CC3上基于DL timingl发送随机接入前导,发起基于竟争的随机接入过程,得到一个新的定时提前量TA3。 Obtaining system information from the user terminal on the CC1 in the random access configuration parameters on the CC3, transmits the random access preamble based on the DL timingl the CC3, initiates a random access procedure based on competitive obtain a new timing advance TA3 .

或者,基站在调度CC3给用户终端时,在RRC信令中配置了CC3上的随机接入配置参数,专用的随机接入前导和物理随机接入信道掩码(PRACH Mask index)。 Alternatively, when the base station to the user terminal in RRC signaling to configure the parameters on the random access configuration CC3 CC3 scheduling, the dedicated random access preamble and a physical random access channel mask (PRACH Mask index). 用户终端在CC3上基于DL timingl发送随机接入前导,发起基于非竟争的随机接入过程,得到一个新的定时提前量TA3。 The user terminal transmitting a random access preamble based on the DL timingl the CC3, based on non-competitive initiating random access procedure to obtain a new timing advance TA3.

用户终端在CC3上,按照初始接入时的下行定时DL timingl,和定时提前量TA3确定上行定时,发送上行信号。 On the CC3 user terminal, in accordance with downlink timing DL timingl time of initial access, and determining the timing advance TA3 uplink timing, uplink signal transmission.

当然,本发明还可有其他多种实施例,在不背离本发明精神及其实质的情况下,熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形, 但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。 Of course, the present invention may have many other embodiments without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding modifications and variations according to the present invention, these corresponding modifications and variations shall fall within the scope of the appended claims.

Claims (11)

1、一种定时提前量的获取方法,其特征在于,包括: 用户终端通过初始接入,获取一个定时提前量,并读取小区基站广播的系统信息; 当所述基站调度所述用户终端在一个新的分量载波上发送上行信号时,所述用户终端根据所述系统信息中的各分量载波的定时提前量的配置信息、和/或所述基站发送的定时提前量的指示信息,决定是否需要获取新的定时提前量;如果需要,则在所述新的分量载波上发起随机接入以获取新的定时提前量。 1. A method for obtaining a timing advance, characterized by comprising: an initial access by a user terminal, obtaining a timing advance, and read system information broadcast by the cell base station; the base station schedules the user terminal transmitting a uplink signal, the user terminal in accordance with the timing of each component carrier in advance information system configuration information, and / or timing of the base station sending the advance of a new carrier component indication information, determine whether to obtain new timing advance; if desired, initiates a random access on said new component carrier to obtain a new timing advance.
2、 如权利要求l所述的方法,其特征在于,所述各分量栽波的定时提前量的配置信息包括本小区各分量载波是否使用相同的定时提前量的信息;当所述用户终端根据所述配置信息决定是否需要获取新的定时提前量时,如果所述配置信息指示本小区各分量载波使用相同的定时提前量,则所述用户终端判定无需获取新的定时提前量,在所述新的分量载波上,使用初始接入所上行同步的分量载波上的定时提前量确定上行定时,进而发送上行信号;如果所述配置信息指示本小区各分量载波使用不同的定时提前量,则所述用户终端判定需要获取新的定时提前量,并在所述新的分量栽波上,使用所述新的定时提前量确定上行定时,进而发送上行信号。 2. The method of claim l, wherein each of said component wave timing advance plant configuration information includes information whether each component carrier of the present cell using the same amount of timing advance; when the user terminal according to when the configuration information to decide whether to obtain new timing advance, if the configuration information of each component carrier indicates the present cell using the same timing advance, then the user terminal is determined without obtaining a new timing advance, in the a new component carriers, the use of an initial access timing of the synchronization on the uplink component carrier is determined uplink timing advance, in turn sends an uplink signal; if the configuration information indicates that the present cell uses different carriers each component timing advance, then the said user terminal is determined to obtain new timing advance and the newly planted wave component using said new timing advance is determined uplink timing, and then transmit the uplink signal.
3、 如权利要求l所述的方法,其特征在于,所述各分量载波的定时提前量的配置信息包括本小区分量载波组的配置信息,使用相同的定时提前量的分量载波属于同一个分量载波组;所述用户终端根据所述配置信息,将初始接入的分量载波所属的分量栽波组标记为已上行同步,并将已获取的定时提前量作为该分量载波组的定时提前量;当所述用户终端根据所述配置信息决定是否需要获取新的定时提前量时,判断所述新的分量载波是否属于已上行同步的某个分量载波组,如果所述新的分量载波属于已上行同步的某个分量载波组,则所述用户终端判定无需获取新的定时提前量,并在所述新的分量载波上,使用其所属的分量栽波组的定时提前量确定上行定时,进而发送上行信号;如果所述新的分量载波不属于已上行同步的任何一个分量载波组,则所述用户 3. The method of claim l, wherein said each component carrier timing advance configuration information includes configuration information of the component carrier group of the present cell using the same timing advance component carriers belonging to the same component carrier group; the user terminal according to the configuration information, the initial access component carrier component group belongs planted wave marked as uplink synchronization, and acquired as the timing advance of the timing of the advance of the component carrier group; when the user terminal according to the configuration information determining whether to obtain new timing advance, determines the new uplink component carriers belonging to a component carrier group of synchronization, if said new uplink component carrier belonging to a synchronization component carrier group, the user terminal is determined without obtaining a new timing advance, and on said new component carrier, using the component to which it belongs planted timing of sets of waves determined uplink timing advance, in turn sends an uplink signal; if the new component carrier does not belong to any of the uplink synchronization of a component carrier group, the user is 端判定需要获取新的定时提前量,并在所述新的分量载波上,使用所述新的定时提前量确定上行定时,进而发送上4于信号。 End is determined to obtain new timing advance, and on said new component carrier, using said new timing advance is determined uplink timing, and thus the transmission 4 to the signal.
4、 如权利要求3所述的方法,其特征在于,当所述用户终端在所述新的分量载波上发起随机接入并获取新的定时提前量后,将所述分量载波组的配置信息中,所述新的分量载波所属的分量载波组标记为已上行同步,并将获取的所述新的定时提前量作为该分量载波组的定时提前量。 4. The method as claimed in claim 3, wherein, when the user terminal initiates the random access on said new component carrier and obtain a new timing advance, the configuration information of the component carrier group in the component carrier group belonging to a new component carrier marked as uplink synchronization, and to obtain the new timing advance as the timing of the advance of the component carrier group.
5、 如权利要求2、 3或4所述的方法,其特征在于,所述定时提前量的配置信息包含在包含小区无线资源配置信息或小区载波聚合配置信息的系统信息块中,所述系统信息块在物理下行共享信道上发送。 5. The method of claim 2, claim 3 or claim 4, wherein said timing advance configuration information includes configuration information that contains a cell or a cell carrier radio resource configuration information to the polymerization system information block, the system information block transmitted in a physical downlink shared channel.
6、 如权利要求1所述的方法,其特征在于,所述定时提前量的指示信息包括指示所述用户终端使用已获得的某个定时提前量,或者不能使用已获得的任何一个定时提前量的信息;当所述用户终端根据所述指示信息决定是否需要获取新的定时提前量时,如果所述指示信息指示所述用户终端使用已获得的某个定时提前量,则所述用户终端判定无需在该新的分量载波上发起随机接入,在新的分量载波上,使用所述已获得的定时提前量确定上行定时,进而发送上行信号;如果所述指示信息指示所述用户终端不能使用已获得的任何一个定时提前量,则所述用户终端判定在所述新的分量载波上需要发起随机接入以获得一个新的定时提前量,并在所述新的分量载波上,使用新的定时提前量确定上行定时, 进而发送上行信号。 6. The method as claimed in claim 1, wherein said timing advance information comprises an indication indicating that the user terminal acquired using a certain timing advance, or can not use any of the timing advance has been obtained information; when the user terminal according to the determined information indicating whether to obtain new timing advance, if the indication information indicates that the user terminal uses a certain timing advance has been obtained, the user terminal determines the no need to initiate a random access on the new component carrier, the component carrier in a new timing acquired using the determined uplink timing advance, in turn sends an uplink signal; if the indication information indicates that the user terminal can not be used any timing advance is obtained, then the user terminal is determined on the new component needs to initiate a random access carrier to obtain a new timing advance, and the new component carriers, the new uplink timing determined timing advance, in turn sends an uplink signal.
7、 如权利要求6所述的方法,其特征在于,所述定时提前量的指示信息包含在所述基站为所述用户终端调度新的分量载波的无线资源控制信令中。 7. The method as claimed in claim 6, wherein said timing advance indication information included in the scheduling base station to the user terminal the new component carrier radio resource control signaling.
8、 如权利要求1、 2、 3、 4、 6或7之任一项所述的方法,其特征在于,当所述系统信息中包含所述定时提前量的配置信息、并且所述基站又发送了所述定时提前量的指示信息时,所述用户终端优先以所述定时提前量的指示信息为准。 8, as claimed in 1, 2, 3, 4, A method according to any one of 6 or 7, wherein, when the system information includes configuration of the timing advance information and the base station in turn requires when the transmission of the timing advance indication information, subject to the user terminal priority information indicative of the advance of the timing.
9、 如权利要求8所述的方法,其特征在于,当所述用户终端判定需要获取新的定时提前量时,采用基于竟争的或基于非竟争的随机接入方式在所述新的分量栽波上发起随机接入;当所述用户终端采用基于非竟争的随机接入方式时,所述基站通过为所述用户终端调度新的分量载波的无线资源控制信令指示专用的随机接入前导和物理随枳4妄入信道掩码,所述用户终端根据所述随机接入前导和物理随机接入信道掩码, 并结合所述新的分量载波上的随机接入配置参数,选择物理随机接入信道发送专用的随枳4妄入前导。 9. A method as claimed in claim 8, wherein, when the user terminal is determined to obtain new timing advance, based on competitive or non-competitive random access manner in the new initiating a random access on the plant component wave; when the user terminal using a non-competitive manner based random access, the base station through the user terminal to schedule a new component carriers dedicated RRC signaling indicates random with physical access preamble and the channel jump orange mask 4, the user terminal random access channel in accordance with the mask and the physical random access preamble, the random access and binding on the new configuration parameters of the component carrier, selected physical random access channel transmission over a dedicated preamble into the trifoliate 4 jump.
10、 如权利要求8所述的方法,其特征在于,所述用户终端在所述新的分量载波上发起随机接入时,基于对时分双工模式下的新的分量载波、或对基于频分双工模式下的新的上行分量载波对应的下行分量载波的下行同步的子帧起始位置发送随机接入前导,并假设定时提前量为0;所述用户终端在所述新的分量载波上发送上行信号时,根据所述新的分量载波的下行定时和所述新的定时提前量确定上行定时。 10, A method as claimed in claim 8, wherein the user terminal initiates a random access on the new component carriers, the new component carriers based on the time division duplex mode, based on the frequency or sub-frame start position of the new downlink component carrier corresponding to the downlink component carrier of the uplink synchronization sub-duplex mode in transmitting a random access preamble, and assuming that timing advance is 0; in the user terminal said new component carrier when the uplink signal transmission, downlink timing according to said new component carrier and said new timing advance is determined uplink timing.
11、 如权利要求8所述的方法,其特征在于,所述用户终端在所述新的分量载波上发起随机接入时,基于初始接入所下行同步的子帧起始位置发送随机接入前导,并假设定时提前量为0;所述用户终端在所述新的分量载波上发送上行信号时,根据初始接入的下行定时和所述新的定时提前量确定上行定时。 11, A method as claimed in claim 8, wherein the user terminal initiates a random access on the new component carrier, a random access based on the initial transmission of the access downlink subframe start position of the synchronization preamble, and assuming that timing advance is 0; when the user terminal transmits an uplink signal on said new component carrier, according to the downlink timing and the initial access of the new timing advance is determined uplink timing.
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WO2011050671A1 (en) * 2009-10-28 2011-05-05 中兴通讯股份有限公司 Component carrier configuration method in carrier aggregation and device thereof
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WO2011085678A1 (en) * 2010-01-12 2011-07-21 华为技术有限公司 Method, device and system for determining timing advance group
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