CN101478824B - Method and base station for identifying downlink component carrier in random access process - Google Patents

Method and base station for identifying downlink component carrier in random access process Download PDF

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CN101478824B
CN101478824B CN200910009897.3A CN200910009897A CN101478824B CN 101478824 B CN101478824 B CN 101478824B CN 200910009897 A CN200910009897 A CN 200910009897A CN 101478824 B CN101478824 B CN 101478824B
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random access
component carrier
downlink component
terminal
base station
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CN101478824A (en
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朱鹏
郝鹏
喻斌
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中兴通讯股份有限公司
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Abstract

本发明提供了一种随机接入过程中标识下行分量载波的方法,包括:基站收到终端发送的随机接入前导后,发送该随机接入前导对应的随机接入响应,在发送所述随机接入响应的所有下行分量载波上,不同的下行分量载波上发送的随机接入响应中携带不同的信道资源分配信息;基站收到终端发送的首次调度上行传输Msg.3后,根据该Msg.3所占用的物理上行共享信道的资源,确定所述终端所同步的下行分量载波。 The present invention provides a method of identifying a random access procedure downlink component carriers, comprising: a base station receives the random access preamble sent by the terminal after transmitting the random access preamble corresponding to the random access response, in transmitting the random All the downlink component carrier access response, a random access response transmitted on a different downlink component carriers carry different channel resource allocation information; base station after receiving the first scheduling uplink transmissions Msg.3 sent by the terminal, according to the Msg. physical uplink shared channel resource 3 occupied, the terminal determines the synchronized downlink component carrier. 本发明还提供一种基站,在随机接入过程中标识下行分量载波。 The present invention further provides a base station in a random access procedure identified downlink component carrier. 本发明利用随机接入响应中的信道资源分配信息标识了下行分量载波,并利用Msg.3的资源映射隐含传递了该标识,使基站确定该终端所同步的下行分量载波。 The present invention utilizes the channel resource allocation in the random access response information identifies the downlink component carrier, and transmitting the identifier using a resource mapping Msg.3 implied, that the base station determines the downlink synchronization component carrier of the terminal.

Description

一种随机接入过程中标识下行分量载波的方法及基站 A random access method and a base station identification process of the downlink component carrier

技术领域 FIELD

[0001] 本发明涉及移动通信领域,特别涉及一种在LTE-A系统随机接入过程中标识下行分量载波的方法及基站。 [0001] The present invention relates to the field of mobile communications, and particularly relates to a LTE-A system random access procedure of the downlink component carrier identification method and base station.

背景技术 Background technique

[0002] 随机接入(RandomAccess)是终端开始和网络通信前的一种接入过程。 [0002] random access (the RandomAccess) is a terminal and an access procedure before beginning the communication network. 如图1 所示,LTE(LongTermEvolution,长期演进)系统的随机接入过程先由终端在物理随机接入信道(PhysicalRandomAccessChannel,简称PRACH)上向基站发送随机接入前导(randomaccesspreamble)。 As shown in FIG random access procedure, LTE (LongTermEvolution, long term evolution) system first by the terminal 1 to the base station on a physical random access channel (PhysicalRandomAccessChannel, referred PRACH) a random access preamble (randomaccesspreamble). 基站接收到终端发出的随机接入前导后,利用其中包含的序列,计算定时提前量,并给该终端分配用于下一步传输的信道资源(称作上行调度授权,UL grant)和临时C-RNTI(CellRadioNetworkTemporaryIdentifier,小区无线网络临时标识号)。 The base station after receiving the random access preamble sent from the terminal, which comprises the use of a sequence, calculate the timing advance and allocation of channel resources for the next transmission to the terminal (referred to as an uplink scheduling grant, UL grant) and a temporary C- RNTI (CellRadioNetworkTemporaryIdentifier, cell radio network temporary identification number). 随机接入前导标识号(RandomAccessPreambleIdentifier),定时提前量、信道资源分配信息以及临时C-RNTI等经物理下行共享信道发送给该终端,称为随机接入响应(randomaccessresponse)。 A random access preamble identification number (RandomAccessPreambleIdentifier), timing advance, channel resource allocation information and temporary C-RNTI, etc. is sent to the terminal via a physical downlink shared channel, known as a random access response (randomaccessresponse). 终端在收到随机接入响应后,按照随机接入响应中的信道资源分配信息ULgrant在物理上行共享信道(PhysicalUplinkSharedChannel,简写为PUSCH)上发送首次调度上行传输(FirstscheduledULtransmission,简写为scheduled transmission,又称为Message3,简写为Msg. 3),并根据随机接入响应中的临时C-RNTI对Msg. 3加扰。 After the terminal receives a random access response, the channel resource allocation information according to the random access response ULgrant physical uplink shared channel (PhysicalUplinkSharedChannel, abbreviated as PUSCH) transmitting first uplink transmission scheduling (FirstscheduledULtransmission, abbreviated as scheduled transmission, also known as is Message3, abbreviated as Msg. 3), and to Msg. 3 the scrambled temporary C-RNTI in the random access response. Msg. 3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,包括比如RRC连接请求(RRCConnectionRequest),终端的C-RNTI等等。 Msg. 3 depending on the event triggering the random access procedure includes different information, including, for example an RRC connection request (a RRCConnectionRequest), the terminal C-RNTI and the like. 基站收到Msg. 3后按其内容反馈随机接入的竞争解决(ContentionResolution)给终端,称为Message4,简写为Msg. 4。 After the base station receives Msg. 3 according to their content of the feedback random access contention resolution (ContentionResolution) to a terminal, referred MESSAGE4, ​​abbreviated as Msg. 4.

[0003] LTE系统中的资源分配以物理资源块(PhysicalResourceBlock,PRB,或简称为ResourceBlock,资源块)为单位,一个PRB在频域上占12个子载波(subcarrier,或称为ResourceElement,简称为RE,每个子载波为15kHz),在时域上占一个时隙,即在时域上占据7个常规循环前缀(Normalcyclicprefix,简称为NormalCP)或6个扩展循环前缀(Extendedcyclicprefix,ExtendedCP)的SC-FDMA符号。 [0003] resource allocation in the LTE system to the physical resource blocks (PhysicalResourceBlock, PRB, or simply ResourceBlock, resource blocks) as a unit, a PRB representing 12 subcarriers (subcarrier in the frequency domain, or referred ResourceElement, simply referred to as RE , each subcarrier is 15kHz), occupies one slot in the time domain, i.e. occupies 7 normal cyclic prefix in time domain (Normalcyclicprefix, abbreviated as NormalCP) 6 or an extended cyclic prefix (Extendedcyclicprefix, ExtendedCP) of SC-FDMA symbol. 如果上行系统带宽在频域上对应的PRB总数为NKB'则PRB的索引nPEBS0、1.....N:_1,RE的索引k为0、1..... N/1 •NseKB-l,其中,N,为一个PRB在频域上所对应的子载波数。 If the total number of PRB uplink system bandwidth corresponds in the frequency domain as NKB 'the index of a PRB nPEBS0,1 ..... N: _1, RE index k is 0,1 ..... N / 1 • NseKB- l, wherein, N, is the number of subcarriers in the frequency domain a PRB corresponding. 贝1J Tony 1J

[0004] [0004]

Figure CN101478824BD00031

[0005] 以常规循环前缀为例,PRB的结构如图2所示。 [0005] In a normal cyclic prefix, for example, the structure of PRB is shown in Fig.

[0006] 在LTE系统中,物理随机接入信道配置参数包括(但不限于)(1)物理随机接入信道的配置索引;(2)物理随机接入信道的频域初始位置;(3)物理随机接入信道所使用的第一条根序列的逻辑索引;(4)序列循环移位量;(5)循环移位限制标识。 [0006] In the LTE system, a physical random access channel configuration parameters include (but are not limited to) configuration index (1) physical random access channel; frequency domain starting position (2) a physical random access channel; (3) the first logical root sequence index of a physical random access channel is used; (4) sequence cyclic shift amount; (5) identifies the cyclic shift limitations. 下面分别介绍这些参数的含义。 The following describes the meaning of these parameters.

[0007] 在LTE系统中,物理随机接入信道使用Zadoff-Chu(简称ZC)序列的循环移位序列作为前导(preamble),这些ZC序列又称为根序列,这些循环移位序列又称为零相关区域(ZeroCorrelationZone,简称ZCZ)序列。 [0007] In the LTE system, a physical random access channel using Zadoff-Chu (referred ZC) sequence cyclic shift sequence as a preamble (Preamble), which is called the root ZC sequence and the sequence, which is also known as a cyclic shift sequence zero correlation zone (ZeroCorrelationZone, abbreviation of ZCZ) sequence. 终端开机之后首先进行下行同步,之后开始检测广播信道。 First, after the terminal is powered on for downlink synchronization, after the start of detection of a broadcast channel. 基站通过广播信道通知终端本小区PRACH信道可以使用的第一条ZC序列的逻辑索引以及循环移位的步长(即循环移位量),终端根据某种映射规则从第一条根序列逻辑索引得到该序列的物理索引,然后根据循环移位量以及一定的"循环移位限制规则"生成可用的ZCZ序列。 The base station notifies the terminal of the present cell PRACH channels through the broadcast channel may use the logical index of the first ZC sequence and step size of cyclic shift (i.e. cyclic shift amount), the terminal according to a certain mapping rule first logical index from a root sequence to obtain the physical index of the sequence, and "cyclic shift restriction rule" according to certain cyclic shift amount and the generated available ZCZ sequences. 这些循环移位限制规则是由循环移位限制标识使能的。 These cyclic shift restriction rule is identified by a cyclic shift limitations enabled. 如果ZCZ序列的数量少于门限值T(LTE系统中,T= 64),则终端自动递增序列逻辑索引,利用下一条ZC 序列继续生成ZCZ序列,直到ZCZ序列的总数大于等于上述门限值为止。 If the number of ZCZ sequences is less than the threshold value T (LTE system, T = 64), the terminal automatically increments the index sequence logic, continue generating ZCZ sequences using the ZC sequence next, until the total number of ZCZ sequences is greater than equal to said threshold value until. 最后,终端在所有生成的可用ZCZ序列中随机选择一条作为随机接入前导(以下简称前导)发送。 Finally, the terminal randomly selected in all available ZCZ sequences generated as a random access preamble (hereinafter referred to as a preamble) transmitted.

[0008] 在LTE系统中,PRACH信道在频域所占的第一个物理资源块(PRB)的索31夂__~卵994「^&細秘初始位置)是通过信令由基站通知终端的,取值范围是rcsjjmjstsi [0008] In the LTE system, PRACH channel 31 Fan cable 994 eggs __ ~ "^ & secret fine frequency domain starting position of a physical resource block (PRB) occupied by a) by signaling by the base station notifies the terminal the range is rcsjjmjstsi

Figure CN101478824BD00041

r> r>

[0009] 在LTE系统中,物理随机接入信道的配置索引共有64种。 [0009] In the LTE system, physical random access channel configuration index channel a total of 64 species. FDD模式的配置与TDD 模式的配置不同,如表1和表2所示。 Configuration FDD mode and TDD mode different configuration, as shown in Table 1 and Table 2.

[0010] 表1FDD模式物理随机接入信道的配置 [0010] Table 1FDD mode of the physical random access channel configuration

[0011] [0011]

Figure CN101478824BD00051

Figure CN101478824BD00061

[0012] [0012]

Figure CN101478824BD00071

[0013] 表1TDD模式物理随机接入信道的配置 [0013] Table 1TDD mode of the physical random access channel configuration

[0014] [0014]

Figure CN101478824BD00081

Figure CN101478824BD00091

[0016] LTE随机接入过程中,终端在物理上行共享信道PUSCH上发送首次调度上行传输Msg. 3。 [0016] LTE random access procedure, send the first scheduling uplink transmissions Msg. 3 on the terminal in a physical uplink shared channel PUSCH. LTE系统在PUSCH的传输中支持集中式(Localized)的资源映射方式,即系统分配给一个终端的上行传输资源为一组连续的物理资源块。 Uplink transmission resource LTE system supports centralized resource mapping of formula (Localized) in PUSCH transmission, i.e. the dispensing system to a terminal for a set of consecutive physical resource blocks. 同时支持上行跳频发射,包括子帧内和子帧间跳频。 Uplink frequency-hopping transmitting support, comprising a subframe hopping and inter-subframe. 在LTE系统的随机接入响应中,包含有用于终端在PUSCH上发送首次调度上行传输Msg. 3的信道资源分配信息,称作上行调度授权(ULgrant,ZObitshULgrant 中又包含有资源块分配信息(Fixedsizeresourceblockassignment,lObits)和上行跳频使能标识(Hoppingflag,lbit),以及其他信道资源分配信息。终端在收到随机接入响应后,按照一定的规则解析ULgrant中的资源块分配信息,得到资源指示量(Resource IndicationValue,RIV)。资源指示量对应了一组连续的虚拟资源块(VirtualResource Block,VRB),具体地说是指示了其中起始虚拟资源块的位置RBSTAK#P该组虚拟资源块的长度La®,。一个虚拟资源块的大小等于一个物理资源块。物理资源块PRB的索引为nPKB,虚拟资源块VRB的索引为11_。 In LTE system, random access response, the terminal includes a first transmission on the PUSCH scheduling uplink transmissions Msg. 3 channel resource allocation information is referred to as uplink scheduling grant (ULgrant, ZObitshULgrant in turn includes a resource block assignment information (Fixedsizeresourceblockassignment , lObits) and an uplink frequency-hopping enable identification (Hoppingflag, lbit), and other channel resource allocation information terminal after receiving the random access response, the resolution resource blocks ULgrant accordance with certain rules of allocation information, indicating the amount of resources obtained (resource IndicationValue, RIV). indicating an amount of resources corresponding to a set of consecutive virtual resource blocks (VirtualResource block, VRB), particularly wherein the starting position indicates a length of the virtual resource blocks RBSTAK # P of the set of virtual resource blocks La® ,. a virtual resource block size is equal to a physical resource blocks PRB physical resource block indexes for nPKB, virtual resource block VRB indexes for 11_.

[0017] 当lbit跳频使能标识为0,即上行跳频未使能时,ULgrant中指示的一组虚拟资源块直接映射到相应子帧第一个时隙内的一组连续物理资源块上;而在该子帧的第二个时隙内,也分配同样位置的一组连续物理资源块。 [0017] When the frequency hopping is enabled lbit identified as 0, i.e., the uplink frequency hopping is not enabled, a set of virtual resource blocks indicated ULgrant directly mapped to a set of consecutive physical resource blocks within the respective sub-frame the first slot on; and in the second slot of the subframe, also be assigned a set of consecutive physical resource blocks the same position. 即分别在一个子帧的两个时隙内,nPKB = nTOB。 I.e. in two slots of one subframe, nPKB = nTOB. 两组资源块用于传输Msg. 3。 Two sets of resource blocks for transmission Msg. 3.

[0018] 当lbit跳频使能标识为1,即上行跳频使能时,ULgrant中指示的一组虚拟资源块按照一定的规则映射到相应子帧第一个时隙内的一组连续物理资源块上;而在该子帧的第二个时隙内,按照一定的跳频规则,也分配一组连续物理资源块。 [0018] When the frequency hopping is enabled lbit identified as 1, i.e. an uplink frequency hopping is enabled, a set of virtual resource blocks ULgrant indicated in accordance with certain rules corresponding subframe is mapped to a set of contiguous physical within the first slot resource blocks; and in the second slot of the subframe, according to a certain hopping rule, also be assigned a set of consecutive physical resource blocks. 即nPKB (ns) =f(nVEB,ns), 其中1^为一个无线巾贞内的时隙编号。 I.e. nPKB (ns) = f (nVEB, ns), wherein 1 ^ is a slot within a wireless towel Zhen number. 两组资源块用于传输Msg. 3。 Two sets of resource blocks for transmission Msg. 3.

[0019] 总之,终端按照一定的资源块映射规则,将ULgrant中资源块分配信息指示的虚拟资源块映射到相应的物理资源块上,以传输Msg. 3。 Virtual resource blocks [0019] In summary, the terminal according to a certain resource block mapping rule, the allocation information indicating the resource block ULgrant mapped to corresponding physical resource blocks to transmit Msg. 3.

[0020] LTE-Advanced系统(简称LTE-A系统)是LTE系统的下一代演进系统。 [0020] LTE-Advanced system (LTE-A system) is the next generation of the LTE system evolved system. 如图3所示,LTE-A系统采用载波聚集(carrieraggregation)技术扩展传输带宽,每个聚集的载波称为一个"分量载波"(componentcarrier)。 As shown in FIG. 3, LTE-A system adopts carrier aggregation (carrieraggregation) transmission bandwidth extension technique, each aggregated carrier is called a "component carrier" (componentcarrier). 分量载波在频谱上可以是连续的,也可以是非连续的。 On component carrier spectrum may be continuous, it may be non-contiguous. 如图4所示,LTE-A系统的下行传输带宽由多个下行分量载波聚集而成;上行传输带宽可能只包含一个上行分量载波,也可能由多个上行分量载波聚集而成。 4, the downlink transmission bandwidth of the LTE-A system, a plurality of downlink component carriers gathered together; uplink transmission bandwidth may contain only one uplink component carrier, may also be gathered from a plurality of uplink component carriers. 即系统上、下行带宽可能包含不同数目的分量载波。 That is on the system, downlink bandwidth may comprise a different number of component carriers. 即使系统上、下行分量载波的数目相同,对某个终端而言,其下行接收带宽包含的分量载波数同上行发送带宽包含的分量载波数也可能不同。 Even on the system, the same number of downlink component carriers, for a certain terminal, the number of carrier components contained in its reception bandwidth of downlink carriers row above the number of components included in the transmission bandwidth may be different. 上、 下行分量载波数目不等的情况称为非对称载波聚集。 , The unequal number of downlink component carriers called asymmetric carrier aggregation.

[0021] 为在单个分量载波上后向兼容LTE,LTE-A系统在尽可能多的下行分量载波上发送同步信号(SynchronizationSignal)和广播信道(BroadcastChannel,BCH)。 [0021] The compatibility to a single component carrier in the LTE, LTE-A system transmits a synchronization signal (SynchronizationSignal) as much as possible on the downlink carrier component and a broadcast channel (BroadcastChannel, BCH). 广播信道广播的信息有多种,其中可以包括(1) 一个上行分量载波的频点以及这个上行分量载波的带宽;(2)上述上行分量载波对应的物理随机接入信道的配置参数。 Broadcast channel information variety, which can include (1) the bandwidth of a frequency of the uplink component carrier and the uplink component carrier; configuration parameters (2) the uplink component carrier corresponding to a physical random access channel.

[0022] 在LTE-A系统的随机接入过程中,终端首先利用下行分量载波上的同步信号完成下行同步。 [0022] In the random access procedure of the LTE-A system, the terminal first synchronization signal using the downlink carrier component on completion of downlink synchronization. 然后,在这个下行分量载波上接收广播信道,得到这个下行分量载波所对应的有物理随机接入信道的上行分量载波的频点、带宽以及相应的物理随机接入信道配置参数。 Then, on receiving this broadcast channel downlink component carrier to obtain the uplink component carrier frequency with a physical random access channel corresponding to the downlink component carrier, the bandwidth and the corresponding physical random access channel configuration parameters. 接着,终端在这个有物理随机接入信道的上行分量载波上发送物理随机接入前导,进行上行同步。 Subsequently, the terminal has a physical uplink component carrier transmitting a physical random access channel, the random access preamble, to perform uplink synchronization. 基站对接收到的随机接入前导进行检测,之后发送随机接入响应给终端。 The base station received the random access preamble is detected, after the transmission of the random access response to the terminal. 终端根据随机接入响应中的信息发送首次调度上行传输Msg. 3。 First scheduled UL transmission terminal Msg. 3. The information transmits the random access response. 基站收到Msg. 3后反馈竞争解决Msg. 4,整个随机接入过程结束。 After the base station receives Msg. 3 contention resolution feedback Msg. 4, the overall random access process ends.

[0023] 在LTE-A系统中,一个有物理随机接入信道的上行分量载波可能对应多个下行分量载波,即多个下行分量载波的广播信道所通知的有物理随机接入信道的上行分量载波相同,如图4所示。 [0023] In the LTE-A system, an uplink component carrier physical random access channel may correspond to a plurality of downlink component carriers, the uplink component has a physical random access channel, i.e., a plurality of broadcast channels of the downlink component carrier notified same carrier, as shown in FIG. 在随机接入过程中,当基站检测到在这个上行分量载波上发送的随机接入前导时,基站无法确定发送该信号的终端同步在哪一个下行分量载波上。 In the random access procedure when the base station detects the random access transmission on this uplink component carrier preamble, the base station determines that the terminal can not transmit the signal which is synchronized on a downlink component carrier. 于是,基站需要在所有对应的下行分量载波上重复发送随机接入响应。 Thus, the base station transmits the random access response to be repeated in all of the corresponding downlink component carrier. 同理,当基站检测到在这个上行分量载波上发送的Msg. 3时,基站无法确定发送该信号的终端同步在哪一个下行分量载波上。 Similarly, when the base station detects Msg transmitted on the uplink component carrier. 3, the base station can not be determined that the terminal transmits the synchronization signal on which downlink component carrier. 于是,基站需要在所有对应的下行分量载波上重复发送竞争解决Msg. 4。 Thus, the base station transmits a contention resolution needs to be repeated Msg. 4 on all of the corresponding downlink component carrier. 如果随机接入过程结束后,基站仍无法确定该终端所同步的下行分量载波,后续的下行信号和/或下行信令可能也需要在多个下行分量载波上重复发送。 If the random access procedure ends, the base station still can not determine the synchronized downlink component carrier of the terminal, a subsequent downlink signal and / or downlink signaling may need to be repeated over a plurality of transmitted downlink component carriers. 这都造成了系统资源的浪费。 This will result in waste of system resources.

[0024] 因此,在LTE-A系统中,如何确定终端同步在哪个下行分量载波上成为一个亟待解决的问题。 [0024] Accordingly, in the LTE-A system, how to synchronize the terminal determines which downlink component carrier on a problem to be solved.

发明内容 SUMMARY

[0025] 本发明要解决的技术问题是提供一种随机接入过程中标识下行分量载波的方法及一种基站,在多个下行分量载波对应一个上行分量载波时,通过标识确定终端所同步的下行分量载波,避免在多个下行分量载波上重复发送竞争解决,浪费系统资源。 [0025] The present invention is to solve the technical problem of providing a random access procedure downlink component carrier identification method and a base station in a plurality of downlink component carriers corresponding to the uplink component carrier, by determining the terminal identifier of the synchronization downlink component carrier, avoid sending the contention resolution in a plurality of downlink component carriers, waste of system resources.

[0026] 为了解决上述技术问题,本发明提供了一种随机接入过程中标识下行分量载波的方法,包括: [0026] To solve the above problems, the present invention provides a method of identifying a random access procedure downlink component carriers, comprising:

[0027] 基站收到终端发送的随机接入前导后,发送该随机接入前导对应的随机接入响应,在发送所述随机接入响应的所有下行分量载波上,不同的下行分量载波上发送的随机接入响应中携带不同的信道资源分配信息; After [0027] The base station receives the random access preamble sent by the terminal transmits the random access preamble corresponding to the random access response on the downlink component carriers all transmit the random access response transmitted on a different downlink component carrier random access response channel carries different resource allocation information;

[0028] 所述基站收到终端在物理上行共享信道上发送的首次调度上行传输Msg. 3后,根据该Msg. 3所占用的所述物理上行共享信道的资源,确定所述终端所同步的下行分量载波。 [0028] The base station receives a physical uplink shared terminal after the first scheduling uplink transmissions Msg.. 3 sent over the channel. The physical uplink shared channel resource 3 occupied, the terminal is determined based on the synchronization Msg downlink component carrier.

[0029] 进一步的,上述方法还可具有以下特点,所述基站只在所述终端所同步的下行分量载波上发送与所述Msg. 3对应的竞争解决Msg. 4。 [0029] Preferably, the above method may also have the following feature, the base station transmits only the Msg. 3 corresponding contention resolution Msg. 4 on the synchronized downlink component carrier of the terminal.

[0030] 进一步的,上述方法还可具有以下特点,所述信道资源分配信息是指基站分配给终端的一组资源块的位置信息和/或数量信息,该组资源块为连续的或非连续的。 [0030] Preferably, the above method may also have the following feature, the channel resource allocation information refers to a set of location information of resource blocks and / or the amount of information allocated to the terminal station, the set of resource blocks for the continuous or discontinuous of.

[0031] 进一步的,上述方法还可具有以下特点,所述携带不同的信道资源分配信息是指不同下行分量载波上发送的随机接入响应中携带的为用于传输Msg. 3的物理上行共享信道分配的资源块的位置完全不同或只有部分重叠。 [0031] Further, the above method may have the following characteristics, different channel carrying the resource allocation information is a random access response transmitted on a different downlink component carrier is carried for transmission Msg. 3 is a physical uplink shared locations of the resource blocks allocated to a channel are different or only partially overlap.

[0032] 进一步的,上述方法还可具有以下特点,N个下行分量载波对应于1个上行分量载波时,即所述N个下行分量载波上通知了同一个上行分量载波的频点位置信息和带宽,如果基站在所述上行分量载波上接收到所述随机接入前导,在该上行分量载波对应的N个下行分量载波上发送该随机接入前导对应的随机接入响应。 When [0032] Further, the above method may have the following features, the N downlink component carriers corresponding to an uplink component carrier, i.e., the frequency notified position information of the same uplink component carrier on the N downlink component carriers and the bandwidth, if the base station receives the uplink component carrier on to the random access preamble, transmitting the random access preamble in the random access response corresponding to the uplink component carrier corresponding to the N downlink component carriers.

[0033] 进一步的,上述方法还可具有以下特点,N个下行分量载波对应1个上行分量载波,即所述N个下行分量载波上通知了同一个上行分量载波的频点位置信息和带宽,且其中M个下行分量载波上通知了相同的所述上行分量载波上的物理随机接入信道的配置索弓丨、频域初始位置和第一条可用根序列的逻辑索引,基站在该上行分量载波上接收到终端发送的所述随机接入前导,在该M个下行分量载波上发送该随机接入前导对应的随机接入响应。 [0033] Further, the above method may have the following features, the N downlink component carriers corresponding to an uplink component carrier, i.e., the position information notified frequency bandwidth, and the same uplink component carrier on the N downlink component carriers, and informing the configuration index bow Shu physical random access channel on the same uplink component carrier on M downlink component carriers, the logical index and the frequency domain starting position of the first root sequences are available, the base station in the uplink component receiving the transmitted carrier to the terminal random access preamble, transmitting the random access preamble in the random access response corresponding to the M downlink component carriers.

[0034] 本发明还提出一种基站,所述基站,用于接收终端发送的随机接入前导,发送该随机接入前导对应的随机接入响应,在发送所述随机接入响应的所有下行分量载波上,不同的下行分量载波上发送的随机接入响应中携带不同的信道资源分配信息; [0034] The present invention also provides a base station, the base station, a random access preamble sent by the terminal transmits a random access response corresponding to the random access preamble, the random access response transmitted in all downlink the component carrier, a random access response transmitted on a different downlink component carriers carry different channel resource allocation information;

[0035] 所述基站还用于接收终端在物理上行共享信道上发送的首次调度上行传输Msg. 3,根据该Msg. 3所占用的所述物理上行共享信道的资源,确定所述终端所同步的下行分量载波。 [0035] The first base station is further configured to schedule uplink transmission Msg sent by a terminal in a physical uplink shared channel. 3, according to the Msg. The physical uplink shared channel resource occupied by 3, the terminal determines synchronization downlink carrier component.

[0036] 进一步的,上述基站还可具有以下特点,所述基站只在所述终端所同步的下行分量载波上发送与所述Msg. 3对应的竞争解决Msg. 4。 [0036] Further, the base station may have the following characteristics, only the terminal by the base station synchronized with the downlink transmission Msg. 3 corresponding contention resolution Msg. 4 on the component carrier.

[0037] 进一步的,上述基站还可具有以下特点,所述信道资源分配信息是指基站分配给终端的一组资源块的位置信息和/或数量信息,该组资源块为连续的或非连续的。 [0037] Further, the base station may have the following characteristics, the channel resource allocation information refers to a set of location information of resource blocks and / or the amount of information allocated to the terminal station, the set of resource blocks for the continuous or discontinuous of.

[0038] 进一步的,上述基站还可具有以下特点,所述携带不同的信道资源分配信息是指不同下行分量载波上发送的随机接入响应中携带的为所述用于传输Msg. 3的物理上行共享信道分配的资源块的位置完全不同或只有部分重叠。 [0038] Further, the base station may have the following characteristics, different channel carrying the resource allocation information is a random access response transmitted on a different downlink component carrier for the transmission is carried Msg. 3 Physical locations of the resource blocks allocated to the uplink shared channel are different or only partially overlap.

[0039] 进一步的,上述基站还可具有以下特点,N个下行分量载波对应于1个上行分量载波时,即所述N个下行分量载波上通知了同一个上行分量载波的频点位置信息和带宽,如果基站在所述上行分量载波上接收到所述随机接入前导,在该上行分量载波对应的N个下行分量载波上发送该随机接入前导对应的随机接入响应。 When [0039] Further, the base station may have the following characteristics, the N downlink component carriers corresponding to an uplink component carrier, i.e., the frequency notified position information of the same uplink component carrier on the N downlink component carriers and the bandwidth, if the base station receives the uplink component carrier on to the random access preamble, transmitting the random access preamble in the random access response corresponding to the uplink component carrier corresponding to the N downlink component carriers.

[0040] 进一步的,上述基站还可具有以下特点,N个下行分量载波对应1个上行分量载波,即所述N个下行分量载波上通知了同一个上行分量载波的频点位置信息和带宽,且其中M个下行分量载波上通知了相同的所述上行分量载波上的物理随机接入信道的配置索弓丨、频域初始位置和第一条可用根序列的逻辑索引,基站在该上行分量载波上接收到终端发送的所述随机接入前导,在该M个下行分量载波上发送该随机接入前导对应的随机接入响应。 [0040] Further, the base station may have the following characteristics, the N downlink component carriers corresponding to an uplink component carrier, i.e., a notification on the N downlink component carriers the same uplink component position information and the frequency bandwidth carriers, and informing the configuration index bow Shu physical random access channel on the same uplink component carrier on M downlink component carriers, the logical index and the frequency domain starting position of the first root sequences are available, the base station in the uplink component receiving the transmitted carrier to the terminal random access preamble, transmitting the random access preamble in the random access response corresponding to the M downlink component carriers.

[0041] 本发明利用随机接入响应中的信道资源分配信息标识了下行分量载波,并利用首次调度上行传输Msg. 3的资源映射隐含传递了该标识,使系统确定了该终端同步在哪一个下行分量载波上,避免了在多个下行分量载波上重复发送竞争解决Msg. 4,避免了后续在多个下行分量载波上重复发送下行信号和/或下行信令。 [0041] The present invention utilizes the channel resource allocation in the random access response information identifies the downlink component carrier, and using the first scheduling uplink transmissions Msg. 3 transmission resource mapping the implicit identification, the system determines where the synchronous terminal on a downlink component carrier, transmits a contention resolution to avoid duplication Msg. 4, to avoid repeating the subsequent downlink signal is transmitted on a plurality of downlink component carriers and / or downlink signaling on a plurality of downlink component carriers.

附图说明 BRIEF DESCRIPTION

[0042] 附图用来提供对本发明的进一步理解,并且构成说明书的一部分,与本发明的实施例一起用于解释本发明,并不构成对本发明的限制。 [0042] The accompanying drawings provide a further understanding of the present invention, and constitute part of this specification, the embodiments of the invention, serve to explain the invention, not to limit the present invention. 在附图中: In the drawings:

[0043] 图1是LTE系统随机接入过程不意图; [0043] FIG. 1 is an LTE system, the random access procedure is not intended;

[0044] 图2是LTE系统的物理资源块结构示意图(以常规循环前缀为例) [0044] FIG. 2 is a schematic structural diagram of a physical resource block in the LTE system (normal cyclic prefix at Case)

[0045] 图3是LTE-A系统载波聚集示意图; [0045] FIG. 3 is a LTE-A carrier aggregation system schematic;

[0046] 图4是LTE-A系统多个下行分量载波对应一个上行分量载波不意图; [0046] FIG. 4 is a LTE-A system, a plurality of downlink component carriers corresponding to the uplink component carrier is not intended;

[0047] 图5是本发明下行分量载波标识方法流程图; [0047] FIG. 5 is a flowchart of a component carrier identification method of the present invention, the downlink;

[0048] 图6是本发明下行分量载波标识方法实施例一(1)示意图; [0048] FIG. 6 is a downlink component carrier identification according to the present invention is a method of Example (1) a schematic view of embodiment;

[0049] 图7是本发明下行分量载波标识方法实施例一(2)示意图; [0049] FIG. 7 is a downlink component carrier identification according to the present invention is a method of Example (2) a schematic embodiment;

[0050] 图8是本发明下行分量载波标识方法实施例二(1)示意图; [0050] FIG. 8 is a schematic view of the present invention downlink component carrier identification according to the second embodiment of the method (1);

[0051] 图9是本发明下行分量载波标识方法实施例二(2)示意图; [0051] FIG. 9 is a schematic view of the present invention downlink component carrier identification method according to the second embodiment (2);

[0052] 图10是本发明下行分量载波标识方法实施例三(1)示意图; [0052] FIG. 10 is a schematic diagram of a downlink component carrier identification method of the present invention according to a third embodiment (1);

[0053] 图11是本发明下行分量载波标识方法实施例三(2)示意图; [0053] FIG. 11 is a schematic diagram of a downlink component carrier identification method of the present invention according to a third embodiment (2);

[0054] 图12是本发明下行分量载波标识方法实施例四(1)示意图; [0054] FIG. 12 is a schematic diagram of the present invention downlink component carrier identification method of Example IV (1);

[0055] 图13是本发明下行分量载波标识方法实施例四(2)示意图。 [0055] FIG. 13 is a tetra (2) a schematic diagram of a downlink component carrier identification method of the present invention is implemented.

具体实施方式 Detailed ways

[0056] 下面将结合实施例和附图详细描述本发明。 [0056] The following embodiments and the accompanying drawings in conjunction with embodiments of the present invention will be described in detail.

[0057] 本发明提出了一种在LTE-A系统随机接入响应中标识下行分量载波的方法,如图5所示,包括: [0057] In the present invention proposes a method of identifying downlink component carrier in the LTE-A system, the random access response, shown in Figure 5, comprising:

[0058] 步骤510,基站接收随机接入前导,发送随机接入响应,在发送所述随机接入响应的所有下行分量载波上,不同的下行分量载波上发送的随机接入响应中携带的信道资源分配信息不同。 [0058] Step 510, the base station receives the random access preamble, the random access response transmitted on all downlink component carriers transmitting the random access response, a random access response transmitted on a different downlink component carrier carries a channel different resource allocation information.

[0059] 场景一: [0059] a scene:

[0060] 假设在一个LTE-A系统中,有N个下行分量载波对应1个上行分量载波,即这N个下行分量载波中,每个下行分量载波的广播信道都通知了同一个上行分量载波的频点位置信息及其带宽。 [0060] Assuming a LTE-A system, there are N downlink component carriers corresponding to an uplink component carrier, i.e., the N downlink component carriers, the broadcast channel of each downlink component carrier are notified of the same uplink component carrier point position information and the frequency bandwidth. N的取值可以为1,2, 3,4或5。 The value of N may be 1, 2, 3, 4 or 5.

[0061] 若N> 1,当有终端下行同步在这N个下行分量载波的其中之一时,终端根据收到的广播信道上的系统信息发送随机接入前导。 [0061] When N> 1, wherein when the synchronous one in the N downlink component carriers in downlink a terminal, the terminal transmits system information broadcast channel according to the received random access preamble. 基站根据收到的随机接入前导,无法确定该终端同步在这N个下行分量载波的哪一个上。 The base station according to the received random access preamble, the terminal can not determine which of the synchronization on the N downlink component carriers. 则基站在所有N个下行分量载波上都发送随机接入响应。 The base station sends a random access response on all N downlink component carriers.

[0062] 场景二: [0062] Scene 2:

[0063] 假设在一个LTE-A系统中,有N个下行分量载波对应1个上行分量载波,即这N个下行分量载波中,每个下行分量载波的广播信道都通知了同一个上行分量载波的频点位置信息及其带宽。 [0063] Assuming a LTE-A system, there are N downlink component carriers corresponding to an uplink component carrier, i.e., the N downlink component carriers, the broadcast channel of each downlink component carrier are notified of the same uplink component carrier point position information and the frequency bandwidth. N的取值可以为1,2, 3,4或5。 The value of N may be 1, 2, 3, 4 or 5.

[0064] 在下行分量载波的广播信道上通知的物理随机接入信道配置参数包括物理随机接入信道的配制索引,频域初始位置,物理随机接入信道的第一条可用根序列的逻辑索引, 循环移位量以及循环移位限制标识。 [0064] configuration parameter index comprises formulating a physical random access channel in a physical random access channel on a broadcast channel a notification of the downlink component carrier, the logical index of the frequency domain starting position, the first available root sequence physical random access channel , the cyclic shift amount and the cyclic shift restriction flag. 在这N个下行分量载波中,假设有M个下行分量载波的广播信道上通知了相同的一组物理随机接入信道配置参数。 In the N downlink component carriers, the broadcast channel is assumed that there are M downlink component carriers notified of the same set of physical random access channel configuration parameters. 该组参数包括(但不限于) 物理随机接入信道的配制索引,和频域初始位置,以及物理随机接入信道的第一条可用根序列的逻辑索引。 The set of parameters including (but not limited to) the index formulated physical random access channel, and the frequency domain initial position, and the first available logical root sequence index of a physical random access channel. 1 <M<N,M的取值可以为1,2,3,4。 1 <M <N, M values ​​can be 1,2,3,4.

[0065] 若M> 1,当有终端同步在这M个下行分量载波的其中之一时,终端根据收到的广播信道上的系统信息发送随机接入前导。 [0065] When M> 1, when a terminal in one of the M synchronized downlink component carriers, the terminal transmits a random access preamble according to the system information broadcast channel received. 基站根据收到的随机接入前导,无法确定该终端同步在这M个下行分量载波的哪一个上。 The base station according to the received random access preamble, the terminal can not be determined which of the synchronization on M downlink component carriers. 则基站在所有M个下行分量载波上都发送随机接入响应。 The base station sends a random access response on all M downlink component carriers.

[0066] 在以上两种场景的基础上基站在这N个(场景一)或M个(场景二)下行分量载波上发送的随机接入响应中携带不同的信道资源分配信息。 [0066] The base station random access response transmitted on the N (a scene) or the M (Scene 2) downlink component carriers carry different channel resource allocation information on the basis of the above two scenarios. 信道资源分配信息是指基站分配给终端用于下一步在物理上行共享信道上传输首次调度上行传输Msg. 3的一组资源块的位置信息和/或数量信息,该组资源块为连续的或非连续的。 Channel resource allocation information is allocated to the terminal for the next base station in the first physical uplink shared channel transmission scheduling uplink transmissions Msg. A set of location information of resource blocks and / or amount of information 3, the set of resource blocks or continuous non-continuous.

[0067] 进一步,在不同的下行分量载波上发送的随机接入响应中携带不同的信道资源分配信息是指携带的资源块的位置信息不同,所述资源块的位置信息不同是指不同的下行分量载波上发送的随机接入响应中携带的为用于传输Msg. 3的物理上行共享信道分配的资源块的位置完全不同或只有部分重叠。 [0067] Further, the random access response transmitted on a different downlink component carriers carry different channel resource allocation information is different from location information of resource blocks to carry the location information of the different resource blocks refer to different downlink a random access response transmitted on the component carrier is carried for transmission Msg. in the position of resource blocks of a physical uplink shared channel 3 is allocated only partially overlapping, or completely different.

[0068] 步骤520,终端根据随机接入响应中的信道资源分配信息,按照一定的资源块映射规则,在对应的物理上行共享信道的物理资源块上发送Msg. 3。 [0068] Step 520, the terminal according to the channel resource allocation information in the random access response, the resource block mapping according to certain rules, sending Msg. 3 on a corresponding physical resource blocks in a physical uplink shared channel.

[0069] 步骤530,基站接收Msg. 3,根据收到的Msg. 3所占用的物理上行共享信道的资源, 确定终端所同步的下行分量载波。 [0069] Step 530, the base station receives Msg. 3, the physical uplink shared channel resources received Msg. 3 occupied, the terminal determines a downlink component carrier is synchronized.

[0070] 进一步地,基站只在该下行分量载波上发送与所述Msg. 3对应的竞争解决Msg. 4。 [0070] Further, the base station in only the downlink component carrier transmitting the Msg. 3 corresponding contention resolution Msg. 4.

[0071] 基站在所分配的N组(场景一)或M组(场景二)资源块上进行盲检测,最终解调出Msg. 3。 [0071] The base station performs blind detection on N group (a scene) or M group (Scene 2) resource blocks allocated, the final demodulated Msg. 3. 基站根据收到的Msg. 3所占用的物理上行共享信道的资源(即所在的物理资源块位置),即可判定该终端同步在哪一个下行分量载波上,并只在该下行分量载波上发送所述Msg. 3对应的竞争解决Msg. 4。 The base station according to the physical uplink shared channel resource received Msg. 3 occupied (i.e., physical resource block position is located), it is determined that the terminal can synchronize on which a downlink component carrier, and transmits only in the downlink component carrier the Msg. 3 corresponding contention resolution Msg. 4.

[0072] 下面通过具体应用实例进一步说明本发明。 [0072] The present invention is further described below with specific application examples.

[0073] 实施例一 [0073] Example a

[0074] 假定一个LTE-A系统,工作在FDD模式下,下行分量载波有2个,每个下行分量载波的带宽为20MHz,上行分量载波有1个,带宽为20MHz,如图6所示。 [0074] assume a LTE-A system, operating in FDD mode, there are two downlink component carriers, the bandwidth of each downlink component carrier is 20MHz, the uplink component carrier has a bandwidth of 20MHz, as shown in FIG.

[0075] 下行分量载波1、2的广播信道中广播了如下信息(不限于如下信息) [0075] 1,2 downlink component carrier broadcast channel broadcasting the following information (information is not limited to the following)

[0076] 1)上行分量载波1的频点位置信息及带宽。 [0076] 1) uplink component carrier frequency and bandwidth information of the position 1.

[0077] 2)上行分量载波1上的物理随机接入信道配置参数。 [0077] 2) uplink component carrier physical random access channel on a configuration parameter.

[0078] 如果一个终端下行同步于下行分量载波1,则这个终端在上行分量载波1上发送随机接入前导。 [0078] If a terminal in the downlink synchronization downlink component carrier 1, then the terminal transmits an uplink component carrier on a random access preamble. 基站在接收到这个终端发送的随机接入前导后,检测出终端上行的定时提前量,通过随机接入响应将这个定时提前量发送给终端。 The base station after receiving the random access preamble sent by the terminal, the terminal detects the timing advance of the uplink, the timing advance is sent to the terminal through a random access response. 由于无法确定发送该信号的终端同步在下行分量载波1或是2上,基站在两个下行分量载波上都发送随机接入响应。 Since the transmitting terminal can not determine the synchronization signal on the downlink component carrier 1 or 2, the base station sends a random access response on the two downlink component carriers.

[0079] 但在下行分量载波1上发送的随机接入响应中,信道资源分配信息为ULgrant_l, 其为终端下一步在上行分量载波1上的物理上行共享信道上传输Msg. 3分配了一组连续的虚拟资源块RIV_1 ;在下行分量载波2上发送的随机接入响应中,信道资源分配信息为UL grant_2,其为终端下一步在上行分量载波1上的物理上行共享信道上传输Msg. 3分配了另一组连续的虚拟资源块RIV_2。 [0079] However, in the random access response transmitted on a downlink component carrier, the channel resource allocation information ULgrant_l, which. Is a group 3 is assigned the next physical uplink shared channel terminal transmission on an uplink component carrier Msg 1 consecutive virtual resource blocks RIV_1; random access response transmitted on the second downlink component carrier, the channel resource allocation information for the UL grant_2, which is a physical uplink shared channel terminal Next Msg transmission on an uplink component carrier 1 is 3. another set of contiguous assigned virtual resource blocks RIV_2. RIV_1和RIV_2这两组连续虚拟资源块的长度LeEBs相同(即虚拟资源块数量相同),但起始位置不同,分别为RBSTAKT 1和RBSTAKT 2。 This same two consecutive RIV_2 RIV_1 and virtual resource block length LeEBs (i.e., the same number of virtual resource blocks), but with different starting positions, respectively RBSTAKT 1 and RBSTAKT 2. 且两组虚拟资源块位置正交,互不重叠。 Position and two orthogonal virtual resource blocks, do not overlap. 假定上行跳频不使能,则虚拟资源块直接映射到对应的物理资源块上,npsB-nVRB,如图7所不。 Assuming uplink frequency-hopping is not enabled, the virtual resource block is mapped directly to a corresponding physical resource block, npsB-nVRB, 7 are not shown in FIG.

[0080] 终端收到随机接入响应后,按照随机接入响应中的信道资源分配信息ULgrant_l 在上行分量载波1上对应的物理上行共享信道的资源上(即RIV_1对应的物理资源块上) 发送Msg. 3。 [0080] After the terminal receives a random access response (i.e., the corresponding physical resource blocks RIV_1) according to the transmission resource information ULgrant_l channel resource allocation in the random access response on the uplink component carrier corresponding to a physical uplink shared channel msg. 3. 基站在RIV_1和RIV_2对应的物理资源块上做盲检测。 Do blind detection on the base station and RIV_2 RIV_1 corresponding physical resource blocks. 正确接收Msg. 3后,根据其占用的物理资源块位置判定终端同步在下行分量载波1上,并在下行分量载波1上发送竞争解决。 After correctly receiving Msg. 3, the terminal determines that synchronization in downlink component carrier 1, and transmits a contention resolution component carrier on the downlink physical resource block 1 in accordance with the position it occupies.

[0081] 实施例二 [0081] Second Embodiment

[0082] 假定一个LTE-A系统,工作在FDD模式下,下行分量载波有2个,每个下行分量载波的带宽为20MHz,上行分量载波有1个,带宽为20MHz,如图8所示。 [0082] assume a LTE-A system, operating in FDD mode, there are two downlink component carriers, the bandwidth of each downlink component carrier is 20MHz, the uplink component carrier has a bandwidth of 20MHz, as shown in FIG.

[0083] 下行分量载波1、2的广播信道中广播了如下信息(不限于如下信息) [0083] 1,2 downlink component carrier broadcast channel broadcasting the following information (information is not limited to the following)

[0084] 1)上行分量载波1的频点位置信息及带宽。 [0084] 1) uplink component carrier frequency and bandwidth information of the position 1.

[0085] 2)上行分量载波1上的物理随机接入信道配置参数。 [0085] 2) uplink component carrier physical random access channel on a configuration parameter.

[0086] 如果一个终端下行同步于下行分量载波1,则这个终端在上行分量载波1上发送随机接入前导。 [0086] If a terminal in the downlink synchronization downlink component carrier 1, then the terminal transmits an uplink component carrier on a random access preamble. 基站在接收到这个终端发送的随机接入前导后,检测出终端上行的定时提前量,通过随机接入响应将这个定时提前量发送给终端。 The base station after receiving the random access preamble sent by the terminal, the terminal detects the timing advance of the uplink, the timing advance is sent to the terminal through a random access response. 由于无法确定发送该信号的终端同步在下行分量载波1或是2上,基站在两个下行分量载波上都发送随机接入响应。 Since the transmitting terminal can not determine the synchronization signal on the downlink component carrier 1 or 2, the base station sends a random access response on the two downlink component carriers.

[0087] 但在下行分量载波1上发送的随机接入响应中,信道资源分配信息为ULgrant_l, 其为终端下一步在上行分量载波1上的物理上行共享信道上传输Msg. 3分配了一组连续的虚拟资源块RIV_1 ;在下行分量载波2上发送的随机接入响应中,信道资源分配信息为UL grant_2,其为终端下一步在上行分量载波1上的物理上行共享信道上传输Msg. 3分配了另一组连续的虚拟资源块RIV_2。 [0087] However, in the random access response transmitted on a downlink component carrier, the channel resource allocation information ULgrant_l, which. Is a group 3 is assigned the next physical uplink shared channel terminal transmission on an uplink component carrier Msg 1 consecutive virtual resource blocks RIV_1; random access response transmitted on the second downlink component carrier, the channel resource allocation information for the UL grant_2, which is a physical uplink shared channel terminal Next Msg transmission on an uplink component carrier 1 is 3. another set of contiguous assigned virtual resource blocks RIV_2. RIV_1和RIV_2两组连续虚拟资源块的长度相同(即虚拟资源块数量相同),但起始位置不同,分别为RBSTAKT 1和RBSTAKT 2。 RIV_1 and RIV_2 two contiguous virtual resource blocks of the same length (i.e., the same number of virtual resource blocks), but with different starting positions, respectively RBSTAKT 1 and RBSTAKT 2. 且两组虚拟资源块位置不完全正交,有部分重叠。 Position and two virtual resource blocks is not completely orthogonal, partially overlap. 假定上行跳频不使能,则虚拟资源块直接映射到对应的物理资源块上,nPEB=nVKB,如图9所示。 Assuming uplink frequency-hopping is not enabled, the virtual resource block is mapped directly to a corresponding physical resource block, nPEB = nVKB, as shown in FIG.

[0088] 终端收到随机接入响应后,按照随机接入响应中的信道资源分配信息ULgrant_l 在上行分量载波1上对应的物理上行共享信道的资源上(即RIV_1对应的物理资源块上) 发送Msg. 3。 [0088] After the terminal receives a random access response (i.e., the corresponding physical resource blocks RIV_1) according to the transmission resource information ULgrant_l channel resource allocation in the random access response on the uplink component carrier corresponding to a physical uplink shared channel msg. 3. 基站在RIV_1和RIV_2对应的物理资源块上做盲检测。 Do blind detection on the base station and RIV_2 RIV_1 corresponding physical resource blocks. 正确接收Msg. 3后,根据其占用的物理资源块位置判定终端同步在下行分量载波1上,并在下行分量载波1上发送竞争解决。 After correctly receiving Msg. 3, the terminal determines that synchronization in downlink component carrier 1, and transmits a contention resolution component carrier on the downlink physical resource block 1 in accordance with the position it occupies.

[0089] 实施例三 [0089] Example three

[0090] 假定一个LTE-A系统,工作在FDD模式下,下行分量载波有5个,每个下行分量载波的带宽为20MHz,上行分量载波有2个,每个上行分量载波的带宽为20MHz,如图10所示。 [0090] assume a LTE-A system, operating in FDD mode, there are five downlink component carriers, the bandwidth of each downlink component carrier is 20MHz, there are two uplink component carriers, the bandwidth for each uplink component carrier is 20MHz, as shown in FIG. [0091] 下行分量载波1、2、3的广播信道中广播了如下信息(不限于如下信息) [0091] 1,2,3 downlink component carrier broadcast channel broadcasting the following information (information is not limited to the following)

[0092] 1)上行分量载波1的频点位置信息及带宽。 [0092] 1) uplink component carrier frequency and bandwidth information of the position 1.

[0093] 2)上行分量载波1上的物理随机接入信道配置参数。 [0093] 2) uplink component carrier physical random access channel on a configuration parameter.

[0094] 下行分量载波1、2上广播的上行分量载波1上的物理随机接入信道配置参数相同,即物理随机接入信道配置索引为9 (对应的物理随机接入信道的格式为0,在上行子帧1 或4或7上发送),频域位置为第20个RB,第一条可用根序列的逻辑索引为10。 [0094] 1,2 downlink carrier component uplink component carrier broadcasted on a physical random access channel configuration parameters of the same, i.e., a physical random access channel configuration index 9 (corresponding to the format of a physical random access channel is 0, transmitting the uplink subframe 1 or 4 or 7), the frequency domain location of the RB 20, the first available logical root sequence index was 10.

[0095] 下行分量载波3上广播的上行分量载波1上的物理随机接入信道配置参数为物理随机接入信道配置索引为9 (对应的物理随机接入信道的格式为0,在上行子帧1或4或7 上发送),频域位置为第26个RB,第一条可用根序列的逻辑索引为10。 [0095] downlink component carriers 3 uplink component carrier broadcast physical random on an access channel configuration parameters of the physical random access channel configuration index 9 (corresponding to a physical random access channel format is 0, the frame in the uplink sub 1 or 4 or 7 the transmission), the frequency domain location of the RB 26, the first available logical root sequence index was 10.

[0096] 下行分量载波4、5的广播信道中广播了如下信息(不限于如下信息) [0096] 4,5 downlink component carrier broadcast channel broadcasting the following information (information is not limited to the following)

[0097] 1)上行分量载波2的频点位置信息及带宽。 [0097] 1) uplink component carrier frequency and bandwidth information of the position 2.

[0098] 2)上行分量载波2上的物理随机接入信道配置参数。 [0098] 2) uplink component carrier on a physical random access channel configuration parameter 2.

[0099]下行分量载波4、5上广播的上行分量载波2上的物理随机接入信道配置参数相同,即物理随机接入信道配置索引为9 (对应的物理随机接入信道的格式为0,在上行子帧1 或4或7上发送),频域位置为第20个RB,第一条可用根序列的逻辑索引为10。 [0099] 4,5 on the same uplink component carrier broadcasted on a physical random access channel configuration parameters of the downlink component carrier 2, i.e., a physical random access channel configuration index 9 (corresponding to the format of a physical random access channel is 0, transmitting the uplink subframe 1 or 4 or 7), the frequency domain location of the RB 20, the first available logical root sequence index was 10.

[0100] 如果一个终端下行同步于下行分量载波1,则这个终端在上行分量载波1上发送随机接入前导,该随机接入前导可以在子帧1或4或7上发送,频域初始位置为第20个RB, 第一条可用根序列的逻辑索引为10。 [0100] If a terminal in the downlink synchronization downlink component carrier 1, then the terminal transmits an uplink component carrier on a random access preamble, the random access preamble may be transmitted on subframe 1 or 4 or 7, the frequency domain starting position for the first 20 RB, the first logical root sequence index of 10 available. 基站在接收到这个终端发送的随机接入前导后,检测出终端上行的定时提前量,通过随机接入响应将这个定时提前量发送给终端。 The base station after receiving the random access preamble sent by the terminal, the terminal detects the timing advance of the uplink, the timing advance is sent to the terminal through a random access response. 基站根据该随机接入前导的子帧位置、频域初始位置和使用的根序列判断发送该信号的终端同步在下行分量载波1或2上,基站在两个下行分量载波上都发送随机接入响应。 The base station according to the terminal position of the sub-frame random access preamble root sequence is determined using the frequency-domain initial position and transmits the synchronization signal on the downlink component carrier 1 or 2, the base station sends a random access on two downlink component carrier response.

[0101] 但在下行分量载波1上发送的随机接入响应中,信道资源分配信息为ULgrant_l, 其为终端下一步在上行分量载波1上的物理上行共享信道上传输Msg. 3分配了一组连续的虚拟资源块RIV_1 ;在下行分量载波2上发送的随机接入响应中,信道资源分配信息为UL grant_2,其为终端下一步在上行分量载波1上的物理上行共享信道上传输Msg. 3分配了另一组连续的虚拟资源块RIV_2。 [0101] However, in the random access response transmitted on a downlink component carrier, the channel resource allocation information ULgrant_l, which. Is a group 3 is assigned the next physical uplink shared channel terminal transmission on an uplink component carrier Msg 1 consecutive virtual resource blocks RIV_1; random access response transmitted on the second downlink component carrier, the channel resource allocation information for the UL grant_2, which is a physical uplink shared channel terminal Next Msg transmission on an uplink component carrier 1 is 3. another set of contiguous assigned virtual resource blocks RIV_2. RIV_1和RIV_2两组连续虚拟资源块的长度相同(即虚拟资源块数量相同),但起始位置不同,分别为RBSTAKT 1和RBSTAKT 2。 RIV_1 and RIV_2 two contiguous virtual resource blocks of the same length (i.e., the same number of virtual resource blocks), but with different starting positions, respectively RBSTAKT 1 and RBSTAKT 2. 且两组虚拟资源块位置正交,互不重叠。 Position and two orthogonal virtual resource blocks, do not overlap. 假定上行子帧内跳频使能,则虚拟资源块按照一定的规则映射到对应的物理资源块上,如图11所示。 Assuming uplink sub-frame frequency hopping is enabled, then the virtual resource block is mapped to the corresponding physical resource blocks in accordance with certain rules, as shown in FIG.

[0102] 终端收到随机接入响应后,按照随机接入响应中的信道资源分配信息ULgrant_l 在上行分量载波1对应的物理上行共享信道的资源上(即RIV_1对应的物理资源块上)发送Msg. 3。 [0102] After the terminal receives a random access response, the resource allocation information according to a channel ULgrant_l the random access response (i.e., the corresponding physical resource blocks RIV_1) Msg transmission on a physical uplink shared channel resource corresponding to the uplink component carrier 1 3. 基站在上行分量载波1RIV_1和RIV_2对应的物理资源块上做盲检测。 Do blind detection station on an uplink component carrier and RIV_2 1RIV_1 corresponding physical resource blocks. 正确接收Msg. 3后,根据其占用的物理资源块位置判定终端同步在下行分量载波1上,并在下行分量载波1上发送竞争解决。 After correctly receiving Msg. 3, the terminal determines that synchronization in downlink component carrier 1, and transmits a contention resolution component carrier on the downlink physical resource block 1 in accordance with the position it occupies.

[0103] 如果一个终端下行同步于下行分量载波3,则这个终端在上行分量载波1上发送随机接入前导,该随机接入前导可以在子帧1或4或7上发送,频域初始位置为第26个RB, 第一条可用根序列的逻辑索引为10。 [0103] If a terminal in the downlink synchronization downlink carrier component 3, then the terminal transmits a random access preamble on the uplink component carrier 1, the random access preamble may be transmitted on subframe 1 or 4 or 7, the frequency domain starting position for the first 26 RB, the first logical root sequence index of 10 available. 基站在接收到这个终端发送的随机接入前导后,检测出终端的定时提前量,通过随机接入响应将这个定时提前量发送给终端。 The base station after receiving the random access preamble sent by the terminal, the terminal detects the timing advance, the timing advance is sent to the terminal through a random access response. 基站根据该随机接入前导的子帧位置、频域初始位置和所使用的根序列,判定该终端下行同步在下行分量载波3上。 The base station according to the position of the sub-frame random access preamble, an initial frequency domain location of the root sequence and used, the terminal determines the downlink synchronization on the downlink component carrier 3. 则随机接入响应在下行分量载波3上发送,相应的竞争解决也在下行分量载波3上发送。 Transmitting the random access response on the downlink component carrier 3, also the corresponding contention resolution transmission on the downlink component carrier 3.

[0104] 如果一个终端下行同步于下行分量载波5,则这个终端在上行分量载波2上发送随机接入前导,该随机接入前导可以在子帧1或4或7上发送,频域初始位置为第20个RB, 第一条可用根序列的逻辑索引为10。 [0104] If a terminal in the downlink synchronization downlink carrier component 5, then the terminal transmits a random access preamble on the uplink component carrier 2, the random access preamble may be transmitted on subframe 1 or 4 or 7, the frequency domain starting position for the first 20 RB, the first logical root sequence index of 10 available. 基站在接收到这个终端发送的随机接入前导后,检测出终端上行的定时提前量,通过随机接入响应将这个定时提前量发送给终端。 The base station after receiving the random access preamble sent by the terminal, the terminal detects the timing advance of the uplink, the timing advance is sent to the terminal through a random access response. 由于无法确定发送该信号的终端同步在下行分量载波4或是5上,基站在两个下行分量载波上都发送随机接入响应。 Since the transmitting terminal can not determine the synchronization signal on the downlink component carrier 4 or 5, the base station sends a random access response on the two downlink component carriers.

[0105] 但在下行分量载波4上发送的随机接入响应中,信道资源分配信息为ULgrant_4, 其为终端下一步在上行分量载波2上的物理上行共享信道上传输Msg. 3分配了一组连续的虚拟资源块RIV_4 ;在下行分量载波5上发送的随机接入响应中,信道资源分配信息为UL grant_5,其为终端下一步在上行分量载波2上的物理上行共享信道上传输Msg. 3分配了另一组连续的虚拟资源块RIV_5。 [0105] However, the random access response transmitted on the downlink carrier component 4, the channel resource allocation information ULgrant_4, which. Is a group 3 is assigned the next physical uplink shared channel terminal transmission on an uplink component carrier Msg 2 consecutive virtual resource blocks RIV_4;. random access response transmitted on the downlink carrier component 5, the channel resource allocation information for the UL grant_5, which is the next physical uplink shared channel terminal transmission on an uplink component carrier Msg 2 3 another set of contiguous assigned virtual resource blocks RIV_5. RIV_4和RIV_5两组连续虚拟资源块的长度相同(即虚拟资源块数量相同),但起始位置不同,分别为RBSTAKT 4和RBSTAKT 5。 And two groups of contiguous virtual RIV_4 RIV_5 same length (i.e., the same number of virtual resource blocks) of resource blocks, but a different starting position, and respectively RBSTAKT 4 RBSTAKT 5. 且两组虚拟资源块位置不完全正交,有部分重叠。 Position and two virtual resource blocks is not completely orthogonal, partially overlap. 假定上行子帧内跳频使能,则虚拟资源块按照一定的规则映射到对应的物理资源块上,如图11所示。 Assuming uplink sub-frame frequency hopping is enabled, then the virtual resource block is mapped to the corresponding physical resource blocks in accordance with certain rules, as shown in FIG.

[0106] 终端收到随机接入响应后,按照随机接入响应中的信道资源分配信息ULgrant_5 在上行分量载波2对应的物理上行共享信道的资源上(即RIV_5对应的物理资源块上)发送Msg. 3。 [0106] After the terminal receives a random access response, the channel resource allocation information according to the random access response ULgrant_5 (i.e., the corresponding physical resource blocks RIV_5) Msg transmission on a physical uplink shared channel resource corresponding to the uplink component carrier 2 3. 基站在上行分量载波2RIV_4和RIV_5对应的物理资源块上做盲检测。 Do blind detection on the base station physical resource blocks in the uplink component carrier corresponding 2RIV_4 and RIV_5. 正确接收Msg. 3后,根据其占用的物理资源块位置判定终端同步在下行分量载波5上,并在下行分量载波5上发送竞争解决。 After correctly receiving Msg. 3, the terminal determines that synchronization in downlink carrier component 5, and transmits a contention resolution component carrier on the downlink physical resource block 5 in accordance with the position it occupies.

[0107] 实施例四 [0107] Fourth Embodiment

[0108] 假定一个LTE-A系统,工作在FDD模式下,下行分量载波有2个,每个下行分量载波的带宽为20MHz,上行分量载波有1个,带宽为20MHz,如图12所示。 [0108] assume a LTE-A system, operating in FDD mode, there are two downlink component carriers, the bandwidth of each downlink component carrier is 20MHz, the uplink component carrier has a bandwidth of 20MHz, as shown in Fig.

[0109] 下行分量载波1、2的广播信道中广播了如下信息(不限于如下信息) [0109] 1,2 downlink component carrier broadcast channel broadcasting the following information (information is not limited to the following)

[0110] 1)上行分量载波1的频点位置信息及带宽。 [0110] 1) uplink component carrier frequency and bandwidth information of the position 1.

[0111] 2)上行分量载波1上的物理随机接入信道配置参数。 [0111] 2) uplink component carrier physical random access channel on a configuration parameter.

[0112] 如果一个终端下行同步于下行分量载波2,则这个终端在上行分量载波2上发送随机接入前导。 [0112] If a terminal in the downlink synchronization downlink component carrier 2, then the terminal transmits a random access preamble on the uplink component carrier 2. 基站在接收到这个终端发送的随机接入前导后,检测出终端上行的定时提前量,通过随机接入响应将这个定时提前量发送给终端。 The base station after receiving the random access preamble sent by the terminal, the terminal detects the timing advance of the uplink, the timing advance is sent to the terminal through a random access response. 由于无法确定发送该信号的终端同步在下行分量载波1或是2上,基站在两个下行分量载波上都发送随机接入响应。 Since the transmitting terminal can not determine the synchronization signal on the downlink component carrier 1 or 2, the base station sends a random access response on the two downlink component carriers.

[0113] 但在下行分量载波1上发送的随机接入响应中,信道资源分配信息为ULgrant_l, 其为终端下一步在上行分量载波1上的物理上行共享信道上传输Msg. 3分配了一组非连续的物理资源块RBGs_l;在下行分量载波2上发送的随机接入响应中,信道资源分配信息为ULgrant_2,其为终端下一步在上行分量载波1上的物理上行共享信道上传输Msg. 3分配了另一组非连续的物理资源块RBGs_2。 [0113] However, in the random access response transmitted on a downlink component carrier, the channel resource allocation information ULgrant_l, which. Is a group 3 is assigned the next physical uplink shared channel terminal transmission on an uplink component carrier Msg 1 non-contiguous physical resource blocks RBGs_l; random access response transmitted on the downlink component carrier 2, channel resource allocation information ULgrant_2, which is the next physical uplink shared channel terminal transmission on an uplink component carrier Msg 1 3. another group of non-assigned consecutive physical resource blocks RBGs_2. RBGs_l和RBGs_2两组非连续物理资源块的位置正交,互不重叠,如图13所示。 RBGs_l RBGs_2 position two orthogonal and non-consecutive physical resource blocks, do not overlap, as shown in Fig.

[0114] 终端收到随机接入响应后,按照随机接入响应中的信道资源分配信息ULgrant_2 在对应的物理上行共享信道的资源上(即RBGs_2对应的物理资源块上)发送Msg. 3。 After [0114] The terminal receives a random access response, the channel resource allocation information according to the random access response ULgrant_2 (i.e., the corresponding physical resource block RBGs_2) sending Msg. 3 on a corresponding resource of a physical uplink shared channel. 基站在RBGs_l和RBGs_2对应的物理资源块上做盲检测。 Do blind detection on the base station and RBGs_2 RBGs_l corresponding physical resource blocks. 正确接收Msg. 3后,根据其占用的物理资源块位置判定终端同步在下行分量载波2上,并在下行分量载波2上发送竞争解决。 After correctly receiving Msg. 3, the terminal determines that synchronization in downlink component carrier 2, and transmits a contention resolution component carrier on the downlink physical resource blocks according to the position it occupies.

[0115] 这样,当有多个下行分量载波对应一个上行分量载波时,通过在不同的下行分量载波上发送不同的随机接入响应,具体地说是在不同的随机接入响应中包含有不同的信道资源分配信息,给终端下一步传输Msg. 3分配不同的物理资源块,系统标识了不同的下行分量载波。 [0115] Thus, when a plurality of downlink component carriers corresponding to one uplink component carrier, by transmitting the different random access response on a different downlink carrier component, specifically included in the random access response different different channel resource allocation information transmission to the terminal Next Msg. 3 assigned different physical resource blocks, the system identifies the different downlink component carrier. 基站根据收到的Msg. 3所在的物理资源块位置,可以确定该终端同步在哪一个下行分量载波上。 The base station according to the received physical resource block position Msg. 3 where it may be determined that the terminal on which a synchronization downlink carrier component.

[0116] 以上所述仅为本发明的实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。 [0116] The above embodiments of the invention only, but not intended to limit the invention to those skilled in the art, the present invention may have various changes and variations. 凡在本发明的精神和原则之内,所作的任何修改、 等同替换、改进等,均应包含在本发明的权利要求范围之内。 Any modification within the spirit and principle of the present invention, made, equivalent substitutions, improvements, etc., should be included within the scope of the invention as claimed in claims.

Claims (4)

1. 一种随机接入过程中标识下行分量载波的方法,其特征在于, 基站收到终端发送的随机接入前导后,发送该随机接入前导对应的随机接入响应,在发送所述随机接入响应的所有下行分量载波上,不同的下行分量载波上发送的随机接入响应中携带不同的信道资源分配信息; 所述基站收到终端在物理上行共享信道上发送的首次调度上行传输Msg. 3后,根据该Msg. 3所占用的所述物理上行共享信道的资源,确定所述终端所同步的下行分量载波; 所述信道资源分配信息是指基站分配给终端的一组资源块的位置信息和/或数量信息,该组资源块为连续的或非连续的; 所述携带不同的信道资源分配信息是指不同下行分量载波上发送的随机接入响应中携带的为用于传输Msg. 3的物理上行共享信道分配的资源块的位置完全不同或只有部分重叠。 A method of identifying a random access procedure of the downlink component carrier, wherein the base station after receiving a random access preamble sent by the terminal transmits the random access preamble corresponding to the random access response, in transmitting the random All the downlink component carrier access response, a random access response transmitted on a different downlink component carriers carry different channel resource allocation information; base station receives the first scheduling uplink transmissions sent by a terminal in a physical uplink shared channel Msg . 3, according to the Msg the physical uplink shared channel resource occupied by 3, the terminal determines synchronization downlink carrier component; the channel resource allocation information refers to the base station a set of resource blocks allocated to the terminal position information and / or information on the number of resource blocks of the set of continuous or discontinuous; different channel carrying the resource allocation information is a random access response transmitted on a different downlink component carrier is carried for transmission Msg uplink physical locations of the resource blocks. 3 shared channel allocation are different or only partially overlap.
2. 如权利要求1所述的方法,其特征在于,所述基站只在所述终端所同步的下行分量载波上发送与所述Msg. 3对应的竞争解决Msg. 4。 2. The method according to claim 1, characterized in that the base station only in the terminal the synchronized downlink component carrier transmitting the Msg. 3 corresponding contention resolution Msg. 4.
3. 如权利要求1或2所述的方法,其特征在于,N个下行分量载波对应于1个上行分量载波时,即所述N个下行分量载波上通知了同一个上行分量载波的频点位置信息和带宽, 如果基站在所述上行分量载波上接收到所述随机接入前导,在该上行分量载波对应的N个下行分量载波上发送该随机接入前导对应的随机接入响应。 3. The method of claim 1 or claim 2, wherein, the N downlink component carriers corresponding to an uplink component carrier, i.e., a frequency of the notification of the uplink component carrier with the N downlink component carriers position information and the bandwidth, if the base station receives the uplink component carrier on to the random access preamble, transmitting the random access preamble in the random access response corresponding to the uplink component carrier corresponding to the N downlink component carriers.
4. 如权利要求1或2所述的方法,其特征在于,N个下行分量载波对应1个上行分量载波,即所述N个下行分量载波上通知了同一个上行分量载波的频点位置信息和带宽,且其中M个下行分量载波上通知了相同的所述上行分量载波上的物理随机接入信道的配置索弓丨、频域初始位置和第一条可用根序列的逻辑索引,基站在该上行分量载波上接收到终端发送的所述随机接入前导,在该M个下行分量载波上发送该随机接入前导对应的随机接入响应。 4. The method of claim 1 or claim 2, wherein, the N downlink component carriers corresponding to an uplink component carrier, i.e., a notification of the same uplink component carrier frequency point position information on the N downlink component carriers and bandwidth, and informing the configuration index bow Shu physical random access channel on the same uplink component carrier on M downlink component carriers, the logical index and the frequency domain starting position of the first root sequences are available, the base station receiving the uplink component carrier to the terminal sends random access preamble, the random transmission on the M downlink component carriers corresponding to the access preamble random access response.
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