CN101772179A - Method and system for transmitting system information in carrier aggregation scene - Google Patents

Method and system for transmitting system information in carrier aggregation scene Download PDF

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Publication number
CN101772179A
CN101772179A CN201010002226A CN201010002226A CN101772179A CN 101772179 A CN101772179 A CN 101772179A CN 201010002226 A CN201010002226 A CN 201010002226A CN 201010002226 A CN201010002226 A CN 201010002226A CN 101772179 A CN101772179 A CN 101772179A
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China
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carrier
information
component carrier
system information
system
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CN201010002226A
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Chinese (zh)
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戴博
曾萍
吴欣
左志松
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中兴通讯股份有限公司
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Publication of CN101772179A publication Critical patent/CN101772179A/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/0406Wireless resource allocation involving control information exchange between nodes

Abstract

The invention discloses a method and a system for transmitting system information in a carrier aggregation scene, which can realize cross-carrier system information transmission. Firstly, a base station selects a component carrier for the system information to be sent and the base station sends the system information to be sent on the selected component carrier; and user equipment UE receives the system information on the selected component carrier and utilizes a wireless network temporary sign with carrier indicative characters or carrier indication information in a downlink control information format to distinguish the component carrier corresponding to the system information, wherein the wireless network temporary sign with the carrier indicative characters or the downlink control information format with the carrier indication information is utilized on the selected component carrier to indicate the component carrier corresponding to the system information to be sent. The invention can realize cross-carrier system information transmission and realize the correct acquisition of the system information of the expanded carrier.

Description

载波聚合场景下系统信息的传输方法及系统 Carrier aggregation transmission method and system scenario of system information

[0001] 技术领域 [0001] Technical Field

[0002] 本发明涉及无线通信技术领域,特别是涉及大带宽下的载波聚合场景下系统信息的传输方法及系统。 [0002] The present invention relates to wireless communication technologies, and particularly relates to a method and system for transmitting system information under carrier aggregation scenario in a large bandwidth.

[0003] 背景技术 [0003] BACKGROUND OF THE INVENTION

[0004] 为了满足高级国际电信联盟(International TelecommunicationUnion-Advanced,简称为ITU-Advanced)的要求,作为LTE(Long TermEvolution,简称为LTE)的演进标准的高级长期演进(Long Term EvolutionAdvanced,简称为LTE-A)系统需要支持更大的系统带宽(最高可达100MHz),并需要后向兼容LTE现有的标准。 Senior Long Term Evolution [0004] In order to meet the high-level ITU (International TelecommunicationUnion-Advanced, referred to as ITU-Advanced) requirements, as LTE (Long TermEvolution, referred to as LTE) standard evolution (Long Term EvolutionAdvanced, referred to as LTE- a) system needs to support a greater system bandwidth (up to 100MHz), and the need for LTE compatible to existing standards. 在现有的LTE系统的基础上,可以将LTE系统的带宽配置进行合并来获得更大的带宽,这种技术称为载波聚合(Carrier Aggregation,简称为CA)技术,该载波聚合技术能够提高IMT-Advance系统的频谱利用率、缓解频谱资源紧缺,进而优化频谱资源的利用。 On the basis of the conventional LTE system, the LTE system bandwidth configuration can be combined to obtain greater bandwidth, this technique is called carrier aggregation (Carrier Aggregation, simply referred to as CA) technology, which can improve the IMT carrier aggregation spectrum utilization -Advance system to ease the shortage of spectrum resources, thus optimizing the use of spectrum resources.

[0005] LTE系统中,物理下行控制信道(Physical downlink control channel,简称为PDCCH):用于承载上、下行调度信息,以及上行功率控制信息。 [0005] LTE system, a physical downlink control channel (Physical downlink control channel, referred to as PDCCH): the carrier is used, the downlink scheduling information and uplink power control information.

[0006] LTE系统中,物理下行共享信道(Physicai Downlink Shared Channel,简称为PDSCH)用来传输用户数据。 [0006] LTE system, a physical downlink shared channel (Physicai Downlink Shared Channel, referred to as PDSCH) used to transmit user data.

[0007] 下行控制信息(Downlink Control Information,简称为DCI)的格式分为以下几种:DCI format 0、1、1A、1B、1C、1D、2、2A、3,3A等。 Divided into the following format [0007] The downlink control information (Downlink Control Information, abbreviated to DCI) is: DCI format 0,1,1A, 1B, 1C, 1D, 2,2A, 3,3A like. 其中, among them,

[0008] ●DCI format 0用于指示物理上行共享信道(Physical uplink sharedchannel,简称为PUSCH)的调度; [0008] ● DCI format 0 (for the PUSCH Physical uplink sharedchannel, short) is used to indicate scheduling of a physical uplink shared channel;

[0009] ●DCI format 1,1A,1B,1C,1D用于单传输块的物理下行共享信道(Physical Downlink Shared Channel,简称为PDSCH)的不同传输模式; [0009] ● DCI format 1,1A, 1B, 1C, 1D for a single physical downlink shared channel transmission block (Physical Downlink Shared Channel, referred to as PDSCH) of different transmission modes;

[0010] ●DCI format 2,2A用于下行PDSCH空分复用的不同传输模式; [0010] ● DCI format 2,2A different transmission modes for the downlink PDSCH space division multiplexing;

[0011] ●DCI format 3,3A用于物理上行控制信道(Physical uplinkcontrolchannel,简称为PUCCH)和PUSCH的功率控制指令的传输。 [0011] ● control instruction (for the PUCCH Physical uplinkcontrolchannel, abbreviation) power transmission and PUSCH DCI format 3,3A for physical uplink control channel.

[0012] 上述DCI format 0,1A,3,3A的传输块大小一样,其中DCI format 0,1A采用1比特进行格式区分。 [0012] The DCI format 0,1A, 3,3A the same transport block size, where DCI format 0,1A distinguished using 1-bit format.

[0013] DCI Format 1A传输的信息如下: [0013] Information transmitted DCI Format 1A follows:

[0014] [0014]

1比特用于选择DCI Format 0或DCI Format 1A; 1 bit for selecting or DCI Format 0 DCI Format 1A;

[0015] [0015]

1比特用于选择集中式虚拟资源块(Localized Virtual ResourceBlock,LVRB)或分布式虚拟资源块(Distributed Virtual ResourceBlock,DVRB)的资源分配方式; 1 bit for selecting a localized virtual resource blocks (Localized Virtual ResourceBlock, LVRB), or distributed virtual resource blocks (Distributed Virtual ResourceBlock, DVRB) resource allocation;

[0016] [0016]

比特用于资源块分配(Resource BlockAssignment),其中,NRBDL表示下行的带宽,用资源块RB(ResourceBlock)的数量来表示。 Bits for resource block allocation (Resource BlockAssignment), wherein, NRBDL represents the downlink bandwidth, with the number of resource blocks RB (ResourceBlock) to FIG.

[0017] [0017]

5比特用于指示调制编码方式(Modulation and Coding Scheme,MCS); 5 bits for indicating modulation and coding scheme (Modulation and Coding Scheme, MCS);

[0018] [0018]

FDD系统中,3比特用于HARQ(Hybrid Automatic Repeat-reQuest,混合自动重传请求)进程数;TDD系统中,4比特用于HARQ进程数。 FDD system, 3 bits for HARQ process number (Hybrid Automatic Repeat-reQuest, hybrid automatic repeat request); the TDD system, 4 bits for HARQ process number.

[0019] [0019]

1比特用于新数据指示(New Data Indicator,NDI); 1 bits for the new data indication (New Data Indicator, NDI);

[0020] [0020]

2比特用于指示冗余版本(RV); 2 bits for indicating the redundancy version (the RV);

[0021] [0021]

2比特用于物理上行控制信道PUCCH的TPC(Transmit PowerControl,传输功率控制); TPC (Transmit PowerControl, transmission power control) 2 bits for a physical uplink control channel PUCCH;

[0022] [0022]

2比特用于下行分配索引(DAI),此功能只在TDD系统的上下行配置需要,在FDD系统中不需要; 2 bits for a downlink assignment index (the DAI), this feature is only, not required in the uplink and downlink in an FDD system configuration requires a TDD system;

[0023] 关于LTE中物理下行控制信道PDCCH的盲检测的过程简单描述如下,控制信道单元(Control channel element,简称为CCE)是承载PDCCH资源的最小单元,控制区域由一系列CCEs组成。 [0023] Blind on a PDCCH in LTE detection procedure is described as follows, control channel elements (Control channel element, abbreviated as CCE) is the minimum unit carrying PDCCH resource, the control region composed of a series of CCEs.

[0024] PDCCH盲检范围由搜索空间定义,搜索空间分公共搜索空间和UE专用搜索空间。 [0024] PDCCH blind detection range defined by the search space, the search space and the common search space points UE-specific search space. 搜索空间Sk(L)定义为: Search space Sk (L) is defined as:

[0025] [0025]

[0026] CCE聚合等级L∈{1,2,4,8},Yk对公共搜索空间Yk=0,即从CCE=0~15中搜索。 [0026] CCE aggregation level L∈ {1,2,4,8}, Yk of the common search space Yk = 0, i.e., from the CCE = 0 to 15 searches. 对UE专用搜索空间Yk=(A·Yk-1)modD,Y-1=nRNTI≠0,A=39827,D=65537, Of the UE-specific search space Yk = (A · Yk-1) modD, Y-1 = nRNTI ≠ 0, A = 39827, D = 65537,

ns表示时隙编号0~19。 ns denotes a slot number from 0 to 19. i=0,…,L-1,m=0,…,M(L)-1.M(L)是搜索空间中L给定后PDCCH候检集(candidates)的数量。 i = 0, ..., L-1, m = 0, ..., M (L) -1.M (L) L is the number of the subject after a given set of PDCCH candidates (candidates in a) search space.

[0027] 其中,nRNTI表示无线网络临时标识值(Radio Network TemporaryIdentifier,简称为RNTI)。 [0027] wherein, nRNTI value represents a radio network temporary identity (Radio Network TemporaryIdentifier, abbreviated as RNTI). 所述nRNTI对应下述无线网络临时标识之中的一个值: The nRNTI a value among the corresponding radio network temporary identity following:

[0028] 系统信息RNTI(System information-RNTI,简称为SI-RNTI), [0028] System Information RNTI (System information-RNTI, simply referred to as SI-RNTI),

[0029] 随机接入RNTI(Random access-RNTI,简称为RA-RNTI), [0029] Random Access RNTI (Random access-RNTI, abbreviated as RA-RNTI),

[0030] 呼叫RNTI(Paging-RNTI,简称为P-RNTI), [0030] Call RNTI (Paging-RNTI, simply referred to as P-RNTI),

[0031] 小区RNTI(Cell-RNTI,简称为C-RNTI), [0031] a cell RNTI (Cell-RNTI, abbreviated as C-RNTI),

[0032] 半静态调度RNTI(Semi-persistent scheduling RNTI,简称为SPS-RNTI), [0032] Semi-Persistent Scheduling RNTI (Semi-persistent scheduling RNTI, abbreviated to SPS-RNTI),

[0033] 临时小区RNTI(Temporary C-RNTI)。 [0033] Temporary Cell RNTI (Temporary C-RNTI).

[0034] 所述nRNTI具体选择哪类RNTI由高层信令配置,具体取值也由相应信令和数据指定。 [0034] The particular choice of what kind of RNTI nRNTI configured by higher layer signaling, the specific values ​​are also designated by the respective data and signaling. RNTI的取值参见下面的表1所示。 RNTI values, see Table 1 shown below. 根据聚合等级定义的搜索空间参见下面的表2所示,UE盲检测时,根据下行链路的传输模式对应的DCI format进行检测。 Referring to Table 2 shown below according to the definition of search spaces aggregation level, the UE blind detection, detection based on the transmission mode of the downlink corresponding to DCI format. 各下行控制信息DCI的16比特循环冗余校验(Cyclicalredundancy check,简称为CRC)用上述的RNTI加扰。 Each 16-bit cyclic redundancy check of downlink control information (DCI) (Cyclicalredundancy check, abbreviated as CRC) scrambled with the above-RNTI. 不同的UE可配置不同的RNTI对CRC进行加扰,从而可以区分不同UE的DCI。 Different RNTI of the UE may configure different scrambling the CRC, which can distinguish between different DCI UE.

[0035] 表1:RNTI值 [0035] Table 1: RNTI value

[0036] [0036]

[0037] [0037]

[0038] 表2:UE监测的PDCCH candidates [0038] Table 2: UE monitoring the PDCCH candidates

[0039] [0039]

[0040] 在LTE系统中,系统信息(System Information,简称为SI)是通过DCIformat 1A/1C进行资源分配的。 [0040] In LTE systems, system information (System Information, abbreviated as SI) is performed by the resource allocation DCIformat 1A / 1C. SI的盲检测只在公共搜索空间中进行,并且SI的DCI的CRC采用唯一的SI-RNTI加扰。 SI blind detection of only the common search space, the SI and the CRC using only DCI SI-RNTI scrambled.

[0041] 在LTE-A载波聚合场景下,引入了多种载波类型。 [0041] In the LTE-A carrier aggregation scenario, the introduction of a variety of types of carriers. LTE-A载波类型可划分为:后向兼容载波(Backwards compatible carrier),非后向兼容载波(Non-backwards compatible carrier)和扩展载波(Extension carrier)三种类型。 LTE-A carrier types can be divided into: a backward compatible carrier (Backwards compatible carrier), the latter three types of non-compatible carrier (Non-backwards compatible carrier), and extension carrier (Extension carrier).

[0042] 扩展载波有两种含义:1)作为分量载波(Component carrier,简称CC)的一部分;2)作为一个独立的分量载波。 [0042] The extension carrier has two meanings: 1) as the component carrier (Component carrier, referred to as CC) part; 2) as an independent component carrier. 扩展载波不能独立工作,必须属于一组分量载波集里的一部分,且此集合中的分量载波中至少有一个可以独立工作。 Extension carrier can not work independently, be part of a component carrier set in the set, and this set of component carriers in at least a working independently. 扩展载波对于LTE UEs是不可见的。 For LTE UEs extension carrier it is not visible.

[0043] 为了设计简单及考虑到各种可能的应用场景,扩展载波极有可能配置成没有PDCCH。 [0043] In order to design a simple and taking into account the possible application scenario, likely extension carrier configured without PDCCH. 那么扩展载波的系统信息对应的DCI需要在其他分量载波上传输。 Then the extension carrier system information corresponding to the DCI to be transmitted on another component carrier. 此外,LTE-A还引入了驻留载波的概念,即UE初始接入的载波,接入成功后,还可通过高层信令给UE重新配置驻留载波,以保证负载均衡。 In addition, LTE-A also introduces the concept resides carrier, i.e. carrier UE initial access, after the access is successful, the UE through higher layer signaling may be reconfigured resident carriers to ensure load balancing.

[0044] 在LTE-A载波聚合场景下,定义了PDCCH分量载波集(PDCCH CCset),UE需要在PDCCH CC set里进行盲检测;还定义了下行分量载波集(Downlink component carrier set,简称为DL CC set),UE的PDSCH可以在DL CC set中任意CC上发送。 [0044] In the LTE-A carrier aggregation scenario, define the PDCCH component carrier set (PDCCH CCset), UE needs to perform blind detection on PDCCH CC set in; also defines the downlink component carrier set (Downlink component carrier set, referred to as DL CC set), UE the PDSCH may be transmitted on DL CC set to any CC. 在LTE-A载波聚合场景下,允许跨载波调度,即某分量载波上的PDCCH可以调度多个分量载波上的PDSCH或PUSCH。 In the LTE-A carrier aggregation scenario, allowing cross-carrier scheduling, i.e. the PDCCH on one component carrier may PDSCH or PUSCH scheduled on multiple component carriers. 跨载波调度时,解非PDCCH所在载波的PDSCH时,需要知道PDSCH所在载波的系统信息。 When cross-carrier scheduling solution carrier where the PDCCH-PDSCH, PDSCH system information you need to know where the carrier.

[0045] 因此,LTE-A系统中,对于配置扩展载波或跨载波调度场景下,用户设备UE如何在分量载波A上获取分量载波B(A≠B)的系统信息成为需要解决的技术问题。 [0045] Therefore, LTE-A system, to configure the extension carrier or the cross-carrier scheduling scenario, the user equipment UE how to obtain the component carrier B (A ≠ B) in the component carrier A system information has become technical problem to be solved.

[0046] 发明内容 [0046] SUMMARY OF THE INVENTION

[0047] 本发明所要解决的技术问题在于,提供一种载波聚合场景下系统信息的传输方法及系统,实现扩展载波或跨载波的系统信息如何获取的问题,实现载波聚合场景下系统信息的正确获取。 [0047] The present invention solves the technical problem is to provide a carrier aggregation transmission method and system for system information at the scene to implement how extension carrier or cross-carrier system information acquisition, to achieve the correct system information under carrier aggregation scenario Obtain.

[0048] 为了解决上述问题,本发明提出了一种载波聚合场景下系统信息的传输方法,包括: [0048] In order to solve the above problems, the present invention proposes a method for transmitting system information under carrier aggregation scenario, comprising:

[0049] 为待发送的系统信息选定分量载波,由基站在选定的分量载波上发送所述待发送的系统信息至用户设备UE; [0049] The selected component carrier is system information to be transmitted, transmitting the system information to be transmitted to the user equipment UE on the selected component carrier by a base station;

[0050] 其中,在选定的分量载波上利用具有载波指示特征的无线网络临时标志或携带载波指示信息的下行控制信息格式来指示待发送的系统信息所对应的分量载波。 [0050] wherein, on the selected component carrier using a temporary wireless network having a flag indicating feature carrier or carrier carrying information indicative of the downlink control information format to indicate the system information of the component carrier to be transmitted corresponds.

[0051] 所述传输方法,进一步包括: [0051] The transmission method further comprising:

[0052] 用户设备UE在选定的分量载波上接收所述系统信息,利用具有载波指示特征的无线网络临时标志或下行控制信息格式里的载波指示信息区分出该系统信息对应的分量载波。 [0052] The user equipment UE receives the system information on the selected component carrier, the use of temporary wireless network having a flag indicating feature carrier or a downlink control information format in the indication information to distinguish the carrier information corresponding to the component carrier system.

[0053] 所述为待发送的系统信息选定分量载波的步骤,可以采用如下方式中一种或它们的组合来实现: [0053] The step of the selected component carrier is system information to be transmitted, in a manner that one or a combination thereof may be implemented using:

[0054] 高层信令指示选定分量载波;自动默认唯一的载波或唯一关联载波;从物理下行控制信道PDCCH分量载波集中随机选定分量载波;采用驻留载波作为选定分量载波。 [0054] The higher layer signaling indicating the selected component carrier; automatically default to a unique carrier or carriers is uniquely associated; a PDCCH concentration from a randomly selected component carrier component carriers; resident employed as a carrier selected component carrier.

[0055] 所述在选定的分量载波上利用具有载波指示特征的无线网络临时标志或携带载波指示信息的下行控制信息格式指示待发送的系统信息所对应的分量载波的步骤,是通过定义一种载波指示无线网络临时标识值CI-RNTI或者定义一种下行控制信息格式DCI format X来实现。 [0055] The component carrier selected on the use of temporary wireless network having a flag indicating feature carrier or carrier carries a downlink control information format of the indication information step of the component carrier system information to be transmitted corresponding indication, by defining a species carrier indicator radio network temporary identity value CI-RNTI or to define a downlink control information format DCI format X to achieve.

[0056] 所述载波指示无线网络临时标识值CI-RNTI是由基站通过高层信令给被跨载波调度的各分量载波配置,不同的分量载波被分配的CI-RNTI值不同; [0056] The carrier indicator radio network temporary identity value CI-RNTI each component carrier by a base station through higher layer signaling is to be cross-carrier scheduling arrangement, different values ​​of CI-RNTI in different component carriers assigned;

[0057] 采用被选定的分量载波的CI-RNTI为选定分量载波上发送的携带对应系统信息的下行控制信息格式DCI format 1A/1C的循环冗余校验CRC加扰。 [0057] The information carried in the corresponding system using the selected downlink component carrier CI-RNTI is transmitted on the selected component carrier control information format cyclic redundancy check DCI format 1A / 1C of CRC scrambling.

[0058] 所述下行控制信息格式DCI format X,至少包括载波指示(CarrierIndicaror,CI)信息;采用集中式虚拟资源块或分布式虚拟资源块资源分配方式指示比特;资源块分配比特,调制编码方式指示比特,冗余版本指示比特。 [0058] The downlink control information format of the DCI format X, comprising at least a carrier indication (CarrierIndicaror, CI) information; localized virtual resource blocks using a distributed virtual resource block or a resource allocation mode indicator bit; bit resource block assignment, modulation and coding scheme indication bits, redundancy version indicator bit.

[0059] 携带所述待发送的系统信息的下行控制信息格式DCI format X采用X-RNTI加扰。 [0059] system information to be transmitted carries a downlink control information format of the DCI format X scrambled using X-RNTI.

[0060] 所述的携带其他载波SI的DCI format X可定义可位于公共搜索空间或UE专有搜索空间,或定义只能位于公共搜索空间。 [0060] The carrier carrying the other SI, DCI format X may be defined in a common search space or a UE-specific search space, or can only be defined in a common search space.

[0061] 所述DCI format X是合并在DCI format 1A中的下行控制信息格式,当高层信令配置系统信息的DCI的CRC由X-RNTI加扰时,用户设备UE解出的下行控制信息对应DCI format X携带的信息。 [0061] The DCI format X are combined in the DCI format 1A in a downlink control information format, when the high-level downlink signaling system configuration information of DCI by the CRC scrambling X-RNTI, the user equipment UE control information corresponding to the solution DCI format X information carried.

[0062] 所述DCI format X是独立的下行控制信息格式,此时该DCI format X还携带与DCI format 0/1A格式区分的比特信息。 [0062] The DCI format X are separate downlink control information format, at which point the DCI format X-bit information also carries with DCI format 0 / 1A format distinguished.

[0063] 本发明还提供一种载波聚合场景下系统信息的传输系统,所述传输系统包括:基站和用户设备UE,其中: [0063] The present invention also provides a carrier aggregation scenario the system information transmission system, said transmission system comprising: a base station and the UE user equipment, wherein:

[0064] 基站,用于为待发送的系统信息选定分量载波,在选定载波上向用户设备UE发送所述待发送的系统信息,其中,在选定的分量载波上利用具有载波指示特征的无线网络临时标志或携带载波指示信息的下行控制信息格式确定待发送的系统信息所对应的分量载波; [0064] the base station, the selected component carrier for system information to be transmitted, the UE transmits the system information to be transmitted to the user equipment on the selected carrier, wherein the carrier has indicated the use of selected features on the component carrier the radio network temporary flag indicating or carrying the carrier downlink control information format information component carrier system determines information to be transmitted corresponding to;

[0065] 用户设备UE,用于接收在选定的分量载波上从基站发送的所述系统信息,利用具有载波指示特征的无线网络临时标志或下行控制信息格式里的载波指示信息区分出该系统信息对应的分量载波。 [0065] the UE user equipment, for receiving the system information on the selected component carrier transmitted from the base station, the wireless network using the temporary flag indicating feature having a carrier or a downlink control information format in the indication information carrier out of the system to distinguish information corresponding to the component carrier.

[0066] 所述基站通过如下方式中一种或它们的组合为待发送的系统信息选定分量载波: [0066] The base station system information selected component carrier to be transmitted by way of one or a combination thereof:

[0067] 高层信令指示选定分量载波;自动默认唯一的载波或唯一关联载波;从PDCCH分量载波集中随机选定分量载波、及采用驻留载波作为选定分量载波。 [0067] The higher layer signaling indicating the selected component carrier; automatically default to a unique carrier or carriers is uniquely associated; concentrated PDCCH from a randomly selected component carrier component carrier, and the use of the carrier as the selected component carriers reside.

[0068] 所述基站在选定的分量载波上利用具有载波指示特征的无线网络临时标志或携带载波指示信息的下行控制信息格式确定待发送的系统信息所对应的分量载波时,是通过定义一种载波指示无线网络临时标识值CI-RNTI或者定义一种新的下行控制信息格式DCI format X来实现。 When [0068] the base station on the selected component carrier using a temporary wireless network having a flag indicating feature carrier or carrier carrying information indicative of the downlink control information format of the system information is determined to be the component carrier corresponding to the transmitted, by defining a species carrier indicator radio network temporary identity value CI-RNTI or to define a new format of downlink control information DCI format X to achieve.

[0069] 本发明的载波聚合场景下系统信息的传输方法及系统,可以实现跨载波的系统信息传输,通过解决采用哪个或哪些分量载波来发送所述系统信息,以及如何在选定载波上指示所发送的系统信息为哪个分量载波的系统信息,等问题,利用高层信令指示选定分量载波;自动默认唯一的载波或唯一关联载波;从物理下行控制信道PDCCH分量载波集中随机选定分量载波;采用驻留载波作为选定分量载波等方式选定载波,利用CI-RNTI和新的DCI格式指示出所承载系统信息对应的载波,使得终端可以正确接收。 [0069] Method and system for carrier aggregation transmission system information scenario of the present invention, the information transmission system can be realized across the carrier, which is transmitted by addressing or which component carriers using the system information, and indicating how the selected carrier problems which component carrier is system information, and other system information is transmitted by high layer signaling indicating the selected component carrier; automatically default to a unique carrier or carriers is uniquely associated; concentrated from a PDCCH component carrier selected at random component carrier ; resident carrier using the selected carrier, etc. as the selected component carriers, information indicating the carrier corresponding to the carrier system and use of CI-RNTI new DCI format, so that the terminal can be received correctly. 这就可以实现在一个载波上发送其他载波系统信息的下行控制信息,从而,解决载波聚合场景下系统信息的获取问题。 This realizes a transmission system information other carriers downlink control information on a carrier, thereby to solve the problem of obtaining a carrier aggregation scenario information system.

[0070] 附图说明 [0070] BRIEF DESCRIPTION OF DRAWINGS

[0071] 图1是载波聚合场景下跨载波发送系统信息的示意图; [0071] FIG. 1 is a schematic cross-carrier transmission system carrier aggregation scenario information;

[0072] 图2是载波聚合场景下跨载波发送系统信息的传输系统的示意图。 [0072] FIG. 2 is a schematic cross-carrier transmission system carrier aggregation scenario information of the transmission system.

[0073] 具体实施方式 [0073] DETAILED DESCRIPTION

[0074] 为使本发明的目的、技术方案和优点更加清楚,以下结合附图对本发明作进一步地详细说明。 [0074] To make the objectives, technical solutions, and advantages of the present invention will become more apparent hereinafter in conjunction with the accompanying drawings of the present invention will be described in further detail.

[0075] 在LTE-A系统中,分量载波A的系统信息在本分量载波A上发送时,发送方法同LTE系统中一致;但是当分量载波A的系统信息不在本分量载波A上发送时,应该如何处理,本发明的技术方案将给予说明。 [0075] In the LTE-A system, the component carrier system information A is transmitted on this component carrier A, transmission method consistent with the LTE system; but transmit when the system information of the component carrier A is not present the component carriers A, what should, aspect of the present invention will be described administered.

[0076] 本发明针对LTE-A系统中配置扩展载波或跨载波调度时,分量载波的系统信息如何在非本分量载波上发送并接收处理的问题,提出了载波聚合场景下系统信息的传输方法及系统。 When [0076] the present invention is configured for LTE-A system extension carrier or cross-carrier scheduling, how the component carrier transmitting system information and reception problems process on the non-present component carriers proposed a carrier aggregation scenario in system information transmission method and systems. 本发明将该技术问题分解为:选择采用哪个或哪些分量载波来发送所述系统信息,以及如何在选定载波上指示所发送的系统信息为哪个分量载波的系统信息,以便用户设备UE可以识别,准确获取各分量载波的系统信息。 The technical problem of the present invention is divided into: opt which of the component carriers transmitting system information, and system information indicating how the transmitted carrier system on the selected component carrier to which the information to the user equipment UE may recognize accurately obtain system information of each component carrier. 通过选定发送的分量载波,并准确指示出系统信息对应于哪个分量载波,就可以实现在一个载波上发送其他载波系统信息的下行控制信息,从而,解决载波聚合场景下系统信息的获取问题。 Transmitting the selected component carriers, and accurate indication of system information corresponds to which component carrier, the downlink transmission can be achieved other system information carrier control information on a carrier, thereby to solve the problem of obtaining a carrier aggregation scenario information system.

[0077] 基于上述思路,本发明的载波聚合场景下系统信息的传输方法,包括: [0077] Based on the above idea, the present invention is a carrier aggregation scenario the system information transmission method, comprising:

[0078] 为待发送的系统信息选定分量载波,由基站在选定载波上发送所述待发送的系统信息至用户设备(User equipment,简称为UE),其中,在选定的分量载波上利用新定义的RNTI或含有载波指示信息的DCI确定待发送的系统信息所对应的分量载波。 [0078] system information to be transmitted to the selected component carriers, the base station transmits the system information to be transmitted on the selected carrier to the UE (User equipment, referred to as the UE), wherein, on the selected component carrier or newly defined using RNTI information indicating a DCI-containing carrier component carrier system determines information to be transmitted corresponds.

[0079] 在上述方法中,为待发送的系统信息选定分量载波的步骤,可以采用如下方式中一种或它们的组合来实现: [0079] In the above process, the system information transmitted to the selected component carrier to be a step in a manner of one or a combination thereof may be implemented using:

[0080] 高层信令指示;自动默认;随机选择;在驻留载波上发送。 [0080] The higher layer signaling indication; automatically default; randomly selected; transmit on carrier resides. 其中: among them:

[0081] ●高层信令指示的方式 [0081] ● indicated by higher layer signaling mode

[0082] 由基站选定发送系统信息的分量载波,基站利用高层信令通过第三层无线资源控制层(Radio Resource Control,简称为RRC)将选定的分量载波的指示信息发送给一个或多个UE,UE解析高层信令获取选定的分量载波的指示信息;基站则在选定的分量载波上发送所述系统信息的DCI,UE则在选定的载波上检测系统信息的DCI。 [0082] the component carrier transmitting system information selected by the base station, using higher-layer signaling by a third layer radio resource control layer (Radio Resource Control, abbreviated to RRC) information indicative of the selected component carriers transmitted to one or more a UE, UE higher layer signaling acquired parsed indication information selected component carrier; DCI base station sending the system information on the selected component carriers, UE then selected on the carrier detection system information DCI.

[0083] ●自动默认方式 [0083] ● automatic default

[0084] 当PDCCH分量载波集对于UE来说只有一个时,或者当扩展载波B只与一个分量载波A关联时,前者UE需要盲检测的系统信息的DCI在唯一的分量载波A上,后者UE需要盲检测的扩展载波B的系统信息的DCI在唯一的分量载波A上,此时则不需要高层信令指示。 [0084] When the PDCCH is only one set of component carriers for the UE, or when the extension carrier A B associated with only one component carrier, the UE needs former system information DCI blind detection on only a component carrier A, the latter UE needs system information extension carrier B DCI blind detection on only a component carrier a, there is no need at this time indicates higher layer signaling.

[0085] ●随机选择方式 [0085] ● random selection mode

[0086] 可以从PDCCH的分量载波集中选择任意一个分量载波来发送扩展载波的SI的DCI或被跨载波调度的分量载波的SI的DCI。 [0086] PDCCH component carrier concentration can select any of a component carrier of the component carriers transmitting the SI DCI DCI extension carrier or cross-carrier scheduling of the SI. 例如,可以从分量载波集中任选一个分量载波A,用于发送扩展载波B的系统信息的DCI。 For example, a component may be optionally concentrated carrier A component carrier for transmitting the system information carrier B extended the DCI.

[0087] ●在驻留载波上发送的方式 [0087] ● embodiment resides in the transmitted carrier

[0088] 当UE需要获取PDCCH的分量载波集以外的其他分量载波的系统信息时,这些系统信息的DCI在UE的下行驻留载波上发送。 [0088] When the UE needs to acquire system information of the component carrier other than the component carrier set PDCCH, the DCI system information transmitted in the downlink of the UE camps on a carrier.

[0089] 在上述方法中,在选定的分量载波上利用新定义的RNTI或含有载波指示信息的DCI确定待发送的系统信息的DCI所对应的分量载波的步骤,可以通过定义一种具有载波指示特征的无线网络临时标志CI-RNTI或者定义一种新的下行控制信息格式DCI format来实现。 Step DCI component carrier system information [0089] In the above process, using a newly defined RNTI on the selected component carrier or a carrier containing information indicating a DCI to be transmitted is determined corresponding to, by defining a carrier having indicating feature radio network temporary flag CI-RNTI or define a new DCI format of downlink control information format is achieved. 其中: among them:

[0090] ●采用CI-RNTI指示 [0090] ● using CI-RNTI indicating

[0091] 当小区内存在被跨载波调度的分量载波时,通过高层信令给被跨载波调度的各分量载波配置不同的CI-RNTI,该CI-RNTI的取值可以从LTE系统中预留的RNTI数值中选择,即包括预留值FFF3~FFFC,不同的分量载波具有不同的CI-RNTI值,与其他种类的RNTI不冲突。 [0091] When memory cells each component carrier when the component carrier is cross-carrier scheduling by the higher layer signaling to configure different cross-carrier scheduling of CI-RNTI, the value of CI-RNTI from the LTE system may be reserved the RNTI value selected, i.e. comprising a reserved value FFF3 ~ FFFC, different component carriers having different values ​​of CI-RNTI does not conflict with other types of RNTI.

[0092] 当分量载波B的SI在本载波B上发送时,携带SI的DCI format 1A/1C的CRC直接用SI-RNTI加扰,当分量载波B的SI的DCI不在本载波B上发送时,例如在利用上述四种方式选定的分量载波A上发送时,携带SI的DCI format 1A/1C的CRC用分量载波B的CI-RNTI加扰。 [0092] When SI component carrier B are transmitted on this carrier B, carrying the SI DCI format CRC 1A / 1C directly with SI-RNTI scrambled, when the SI of the component carrier B in the DCI is not present carrier B transmission , for example, on a transmission mode selected by using the above four component carriers a, CI-RNTI carried in the SI scrambled with DCI format CRC of the component carrier B 1A / 1C is. UE通过解扰校验DCI达到区分不同分量载波的系统信息的目的。 DCI UE by checking achieve descrambling system information object distinguishing different component carriers.

[0093] 用CI-RNTI加扰的DCI format 1A可定义只位于公共搜索空间,或可位于公共搜索空间或UE专有搜索空间。 [0093] CI-RNTI scrambled with a DCI format 1A can be defined only common search space is located, or may be located in a common search space or a UE-specific search space.

[0094] 用CI-RNTI加扰的DCI format 1C只位于公共搜索空间。 [0094] CI-RNTI scrambled with a DCI format 1C is located only common search space.

[0095] ●采用专门用于指示其他载波SI的DCI format X指示 [0095] ● using DCI format X to indicate other dedicated carriers indication of SI

[0096] 本发明中定义一种专门用于指示其他载波的系统信息的下行控制信息格式DCI format X,该DCI format X的开销与DCI format 1A一致; Downlink system information [0096] The present invention is defined in the other carriers for indicating a special control information format DCI format X, the DCI format X overhead consistent with DCI format 1A;

[0097] 该DCI format X至少包括: [0097] The DCI format X comprises at least:

[0098] 载波指示(Carrier Indicaror,CI)信息; [0098] indicates carrier (Carrier Indicaror, CI) information;

[0099] 集中式虚拟资源块或分布式虚拟资源块资源表示指示比特; [0099] localized virtual resource blocks or the distributed virtual resource block represents a resource indicator bit;

[0100] 资源块分配比特; [0100] resource allocation bit block;

[0101] 调制编码方式指示比特; [0101] bits indicating modulation and coding scheme;

[0102] 冗余版本指示比特。 [0102] redundancy version indicator bit.

[0103] 更进一步的,承载DCI format X的PDCCH使用专有的X-RNTI加扰CRC。 [0103] further, PDCCH of DCI format X carrier using a proprietary X-RNTI scrambled CRC. 更进一步的,携带其他载波SI的DCI format 1A/X可位于公共搜索空间或UE专有搜索空间。 Still further, the other carriers carrying the SI DCI format 1A / X can be located in a common search space or a UE-specific search space. 这里需指出,DCI format X可以合并在DCI format 1A中,当高层信令配置系统信息由X-RNTI加扰时,UE解出的DCI信息对应DCI format X携带的信息。 Here is to be noted, DCI format X can be combined in a DCI format 1A, when the high-level signaling system configuration information from the X-RNTI scrambling, a solution of the DCI information of the UE corresponding to the information carried by the DCI format X. X-RNTI可以从LTE系统中预留的RNTI中选择,即FFF3~FFFC。 X-RNTI may be selected from the LTE system reserved RNTI, i.e. FFF3 ~ FFFC.

[0104] DCI format X也可以作为独立的DCI format,此时DCI format X还携带与DCI format 0/1A格式区分的比特信息。 [0104] DCI format X can be used as an independent DCI format, this point also carries DCI format X-bit information with DCI format 0 / 1A format distinguished.

[0105] 系统信息的PDSCH可定义在本载波上发送,即分量载波A的系统信息的PDSCH在分量载波A上发送。 PDSCH can be defined [0105] system information transmitted on this carrier, i.e. component carrier system information A is transmitted by the PDSCH on the component carrier A. 也可以定义系统信息的PDSCH与DCI在同一载波上发送。 You may also be defined with DCI PDSCH system information transmitted on the same carrier.

[0106] 如图2所示,显示了本发明的载波聚合场景下系统信息的传输系统,所述传输系统包括:基站和用户设备UE,其中: [0106] Figure 2, shows the transmission system of the present invention, the carrier aggregation scenario the system information, the transmission system comprising: a base station and the UE user equipment, wherein:

[0107] 基站,用于为待发送的系统信息选定分量载波,在选定载波上向用户设备UE发送所述待发送的系统信息,其中,在选定的分量载波上利用具有载波指示特征的无线网络临时标志或携带载波指示信息的下行控制信息格式确定待发送的系统信息所对应的分量载波。 [0107] the base station, the selected component carrier for system information to be transmitted, the UE transmits the system information to be transmitted to the user equipment on the selected carrier, wherein the carrier has indicated the use of selected features on the component carrier the radio network temporary flag indicating or carrying the carrier downlink control information format information component carrier system determines information to be transmitted corresponds.

[0108] 用户设备UE,用于接收在选定的分量载波上从基站发送的所述系统信息,利用具有载波指示特征的无线网络临时标志或下行控制信息格式里的载波指示信息区分出该系统信息对应的分量载波。 [0108] the UE user equipment, for receiving the system information on the selected component carrier transmitted from the base station, the wireless network using the temporary flag indicating feature having a carrier or a downlink control information format in the indication information carrier out of the system to distinguish information corresponding to the component carrier.

[0109] 所述UE进一步根据所接收的系统信息的下行控制信息DCI,解对应的分量载波的物理下行共享信道。 [0109] Further the UE downlink control information (DCI) in accordance with system information received, the corresponding component carrier solution physical downlink shared channel.

[0110] LTE-A中的系统信息可以进行跨载波调度;也就是说,载波B的系统信息(System Information)相关的下行控制信息(DCI)可由基站在其他载波A(B不等于A)上发送给UE,UE可以在载波A上检测载波B系统信息相关的下行控制信息(DCI); [0110] LTE-A system information may be cross-carrier scheduling; That is, the carrier B system information (System Information) relating to the downlink control information (DCI) in the other carriers by the base station A (B is not equal to A) of sent to the UE, UE may detect information related to carrier B system downlink control information (DCI) on carrier a;

[0111] 发送所述载波B系统信息相关的下行控制信息的载波,可以通过高层信令配置;或者是PDCCH分量载波集里的任意一个载波;或者是驻留载波;或者是UE的PDCCH分量载波集里唯一仅有的一个载波A或者是只与扩展载波B关联的一个分量载波A,此时UE需要检测的系统信息在唯一的分量载波A上。 [0111] Carrier B transmitting the downlink control information related to the system carrier information, may be configured by higher layer signaling; or a PDCCH in a component carrier set to any one carrier; resident or carrier; or a component carrier of the UE PDCCH set the only a or only one carrier extension carrier associated with only one component carrier B in a, while the system information the UE needs only detected on the component carriers a.

[0112] 在所述传输系统中,在同一个载波上发送的不同载波系统信息的DCI通过对承载相应DCI的PDCCH使用不同的扰码来加扰CRC,从而,区分不同载波系统信息的DCI。 [0112] In the transmission system, the scrambling CRC DCI different carrier system transmitted on the same carrier information through different bearer corresponding PDCCH of DCI scrambling code used to distinguish different carriers DCI system information. 给小区内需要被跨载波调度的每一个分量载波分配一个载波指示无线网络临时标识值(Carrier indicator-Radio NetworkTemporary Identifier,简称为CI-RNTI),承载各载波相应系统信息的DCI的PDCCH使用各载波对应的扰码来加扰CRC; Need to be allocated within a cell for each component carrier cross-carrier scheduling a carrier indicator radio network temporary identity value (Carrier indicator-Radio NetworkTemporary Identifier, referred to as CI-RNTI), the carrier of each carrier corresponding to the system information of DCI PDCCH using each carrier scrambling codes corresponding to the CRC scrambled;

[0113] 各载波的系统信息的DCI format 1A/1C的CRC用给定的CI-RNTI进行加扰。 [0113] DCI format of the system information of each carrier 1A / 1C of the CRC scrambled by the given CI-RNTI. 在检测DCI时,UE可以通过CI-RNTI来区分各载波的系统信息。 Upon detection of DCI, UE can be distinguished by each carrier system information CI-RNTI.

[0114] 在所述传输系统中,还可以定义一种专门用于指示其他载波SI的DCIformat X,该DCI format X的开销与其所在分量载波的DCI format 1A一致;所述一致是指编码前的原始信息一致,即信息域及域大小一致。 [0114] In the transmission system, may also be defined specifically for the SI indicate other carriers DCIformat X, the DCI format X where its overhead component carrier consistent with DCI format 1A; the same before coding means consistent with the original information that matches the information domain and the domain size.

[0115] 该DCI format X包括: [0115] The DCI format X comprising:

[0116] 载波指示(Carrier Indicaror,CI)信息, [0116] indicates carrier (Carrier Indicaror, CI) information,

[0117] 集中式虚拟资源块或分布式虚拟资源块资源表示指示比特, [0117] localized virtual resource blocks or the distributed virtual resource block represents a resource indication bits,

[0118] 资源块分配比特, [0118] Resource block assignment bit,

[0119] 调制编码方式指示比特, [0119] MCS indication bits,

[0120] 冗余版本指示比特。 [0120] redundancy version indicator bit.

[0121] DCI format X使用专有的X-RNTI加扰CRC。 [0121] DCI format X using a proprietary X-RNTI scrambled CRC. 携带其他载波SI的DCIformat 1A/X可位于公共搜索空间或UE专有搜索空间。 Other carriers carrying the SI DCIformat 1A / X can be located in a common search space or a UE-specific search space.

[0122] DCI format X可以合并在DCI format 1A中,当高层信令配置SI由X-RNTI加扰时,UE解出的DCI信息对应DCI format X携带的信息。 [0122] DCI format X can be combined in a DCI format 1A, when the high-level signaling configuration SI scrambling X-RNTI, the DCI information of the UE solved DCI format X corresponding to the information carried. X-RNTI可以从LTE系统中预留的RNTI中选择,即FFF3~FFFC。 X-RNTI may be selected from the LTE system reserved RNTI, i.e. FFF3 ~ FFFC.

[0123] DCI format X也可以作为独立的DCI format,此时DCI format X还携带与DCI format 0/1A格式区分的比特信息。 [0123] DCI format X can be used as an independent DCI format, this point also carries DCI format X-bit information with DCI format 0 / 1A format distinguished.

[0124] 实施例1 [0124] Example 1

[0125] 本实施例中,采用高层信令配置方式选定发送系统信息的分量载波,采用CI-RNTI进行加扰指示。 [0125] In this embodiment, high-level signaling configuration manner using the selected component carrier transmitting system information using CI-RNTI for scrambling indication. 参照图1,假定有三个载波CC1,CC2,CC3。 Referring to Figure 1, assume that there are three carriers CC1, CC2, CC3. CC3为扩展载波,UE的PDCCH CC set(分量载波集)里有2个分量载波,记作CC1,CC2。 CC3 is an extended carrier, the UE's PDCCH CC set (set of component carrier), there are two component carriers, denoted by CC1, CC2.

[0126] 由于扩展载波CC3没有PDCCH,所以扩展载波的系统信息可由高层信令指示在其他分量载波上发送。 [0126] Since the extension carrier CC3 no PDCCH, so the system information extension carrier may be higher layer signaling indication transmitted on other component carriers.

[0127] 高层信令给CC3分配的CI-RNTI为FFFC(16进制)。 CI-RNTI [0127] higher layer signaling is assigned to CC3 FFFC (16 hex).

[0128] 如果扩展载波CC3的系统信息由高层信令指示在分量载波CC2上发送时,则相应的DCI的CRC用扩展载波CC3的CI-RNTI=FFFC(16进制)加扰,UE根据高层信令指示在CC2上盲检测扩展载波CC3的系统信息SI,在公共搜索空间检测DCI format 1C和1A,在UE专有搜索空间里检测DCIformat 1A,且都用扩展载波CC3的CI-RNTI=FFFC解CRC,校验DCI信息。 [0128] If the extension carrier CC3 system indicated by higher layer signaling information is transmitted on the component carrier CC2, DCI CRC of the corresponding extension carrier CC3 with the CI-RNTI = FFFC (16 hex) scrambling, UE according to senior signaling indicates blind detection of system information SI extension carrier CC3 in the common search space is detected. 1A and CC2 DCI format 1C, detect the UE specific search space DCIformat 1A, and are extended with a carrier CC3 CI-RNTI = FFFC solution CRC, check DCI information.

[0129] 通过上述步骤,UE可以根据解得的DCI获取扩展载波CC3的系统信息的PDSCH在CC3的位置。 [0129], UE can acquire system information carrier CC3 is extended through the above steps according to the solution obtained in the CC3 DCI PDSCH position.

[0130] 实施例2 [0130] Example 2

[0131] 本实施例中,采用随机选择方式选定发送系统信息的分量载波,采用新定义的下行控制信息格式DCI format X进行指示。 [0131] In this embodiment, the random selection mode transmission system information of the selected component carriers, the new downlink control information format defined DCI format X instruction. 参照图1,假定有三个载波CC1,CC2,CC3。 Referring to Figure 1, assume that there are three carriers CC1, CC2, CC3. CC3为扩展载波,UE的PDCCH CC set(分量载波集)里有2个分量载波,记作CC1,CC2。 CC3 is an extended carrier, the UE's PDCCH CC set (set of component carrier), there are two component carriers, denoted by CC1, CC2.

[0132] UE需要获取CC1,CC2和CC3的系统信息。 [0132] UE needs to obtain system information CC1, CC2 and CC3's. 则UE在分量载波CC1上盲检测CC1的系统信息,在分量载波CC2上盲检测CC2的系统信息,在分量载波集的载波上进行检测,例如在CC1和CC2上盲检测扩展载波CC3的系统信息。 The UE on the component carrier CC1 blind detection system information CC1 and on the component carrier CC2 blind detection system information of CC2, detection on carrier component carrier set, for example on CC1 and CC2 blind detection extension carrier CC3 system information .

[0133] 基站利用高层信令给UE配置用X-RNTI=FFF4(16进制)加扰扩展载波CC3的系统信息的DCI的CRC。 [0133] The base station uses the high layer signaling to a UE configured with X-RNTI = FFF4 (16 hex) scrambling the extended system information carrier CC3 of the DCI CRC.

[0134] UE在分量载波集的载波CC1和CC2上盲检测扩展载波CC3的系统信息的DCI时,用X-RNTI=FFF4(16进制)对CRC进行解扰,然后校验DCI信息,按照DCI format X的信息内容解读相应信息。 When the [0134] UE DCI blind detection carrier CC3 extended system information on a carrier component carriers CC1 and CC2 set by X-RNTI = FFF4 (16 hex) descrambling the CRC and parity DCI information, in accordance with content DCI format X corresponding information interpretation.

[0135] 根据DCI format X里的载波指示CI信息获得系统信息SI对应的分量载波是CC3。 [0135] The information indicating CI DCI format X obtained in the carrier corresponding to the component carrier is system information SI CC3. 然后根据DCI format X里的资源分配信息在CC3的PDSCH中解CC3的系统信息。 Then extract the information system in the CC3 CC3 PDSCH according to the DCI format X in the resource allocation information.

[0136] 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。 [0136] 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 (13)

1.一种载波聚合场景下系统信息的传输方法,其特征在于,包括: CLAIMS 1. A method of transmitting a carrier aggregation scenario of system information, characterized by comprising:
为待发送的系统信息选定分量载波,由基站在选定的分量载波上发送所述待发送的系统信息至用户设备UE; Selected component carrier is system information to be transmitted, transmitting the system information to be transmitted to the user equipment UE on the selected component carrier by a base station;
其中,在选定的分量载波上利用具有载波指示特征的无线网络临时标志或携带载波指示信息的下行控制信息格式来指示待发送的系统信息所对应的分量载波。 Wherein, on the selected component carrier using a temporary wireless network having a flag indicating feature carrier or carrier carrying information indicative of the downlink control information format to indicate the system information of the component carrier to be transmitted corresponds.
2.根据权利要求1所述的传输方法,其特征在于,所述传输方法,进一步包括: 2. The transmission method according to claim 1, wherein said transmission method further comprising:
用户设备UE在选定的分量载波上接收所述系统信息,利用具有载波指示特征的无线网络临时标志或下行控制信息格式里的载波指示信息区分出该系统信息对应的分量载波。 The user equipment UE receives the system information on the selected component carrier, the use of temporary wireless network having a flag indicating feature carrier or a downlink control information format in the indication information to distinguish the carrier information corresponding to the component carrier system.
3.根据权利要求1所述的传输方法,其特征在于,所述为待发送的系统信息选定分量载波的步骤,可以采用如下方式中一种或它们的组合来实现: The transmission method according to claim 1, wherein the step of the selected component carrier is system information to be transmitted, in a manner that one or a combination thereof may be implemented using:
高层信令指示选定分量载波;自动默认唯一的载波或唯一关联载波;从物理下行控制信道PDCCH分量载波集中随机选定分量载波;采用驻留载波作为选定分量载波。 Higher layer signaling indicating the selected component carrier; automatically default to a unique carrier or carriers is uniquely associated; a PDCCH concentration from a randomly selected component carrier component carriers; resident employed as a carrier selected component carrier.
4.根据权利要求1或3所述的传输方法,其特征在于, The transmission method according to claim 13, wherein,
所述在选定的分量载波上利用具有载波指示特征的无线网络临时标志或携带载波指示信息的下行控制信息格式指示待发送的系统信息所对应的分量载波的步骤,是通过定义一种载波指示无线网络临时标识值CI-RNTI或者定义一种下行控制信息格式DCI format X来实现。 The wireless network using the temporary flag indicating feature having a carrier on the selected component carrier or a carrier carrying information indicative of the downlink control information format indicating the component carrier to be the step of transmitting the system information corresponding to define a carrier indication by radio network temporary identity value CI-RNTI or to define a downlink control information format DCI format X to achieve.
5.根据权利要求4所述的传输方法,其特征在于, The transmission method according to claim 4, characterized in that,
所述载波指示无线网络临时标识值CI-RNTI是由基站通过高层信令给被跨载波调度的各分量载波配置,不同的分量载波被分配的CI-RNTI值不同; The carrier indicator radio network temporary identity value CI-RNTI each component carrier by a base station through higher layer signaling is to be cross-carrier scheduling arrangement, different values ​​of CI-RNTI in different component carriers assigned;
采用被选定的分量载波的CI-RNTI为选定分量载波上发送的携带对应系统信息的下行控制信息格式DCI format 1A/1C的循环冗余校验CRC加扰。 Carries system information corresponding to the downlink component carrier is selected using the CI-RNTI is transmitted on the selected component carrier control information format cyclic redundancy check DCI format 1A / 1C of CRC scrambling.
6.根据权利要求4所述的传输方法,其特征在于, 6. The transmission method according to claim 4, characterized in that,
所述下行控制信息格式DCI format X,至少包括载波指示(CarrierIndicaror,CI)信息;采用集中式虚拟资源块或分布式虚拟资源块资源分配方式指示比特;资源块分配比特,调制编码方式指示比特,冗余版本指示比特。 The format of the downlink control information DCI format X, comprising at least a carrier indication (CarrierIndicaror, CI) information; localized virtual resource blocks using a distributed virtual resource block or a resource allocation mode indicator bit; bit resource block assignment, modulation and coding scheme indication bits, redundancy version indicator bit.
7.根据权利要求4所述的传输方法,其特征在于, The transmission method according to claim 4, characterized in that,
携带所述待发送的系统信息的下行控制信息格式DCI format X采用X-RNTI加扰。 Carrying system information to be transmitted to the downlink control information format using the DCI format X X-RNTI scrambled.
8.根据权利要求4所述的传输方法,其特征在于, 8. The transmission method according to claim 4, characterized in that,
所述的携带其他载波SI的DCI format X可定义可位于公共搜索空间或UE专有搜索空间,或定义只能位于公共搜索空间。 The other carrier carrying a DCI format X SI may define in a common search space or a UE-specific search space, or can only be defined in a common search space.
9.根据权利要求4所述的传输方法,其特征在于, 9. The transmission method according to claim 4, characterized in that,
所述DCI format X是合并在DCI format 1A中的下行控制信息格式,当高层信令配置系统信息的DCI的CRC由X-RNTI加扰时,用户设备UE解出的下行控制信息对应DCI format X携带的信息。 The DCI format X are combined in the DCI format 1A in a downlink control information format, when scrambled by the X-RNTI, the user equipment UE solved downlink control level signaling system configuration information corresponding to the DCI CRC information DCI format X carry information.
10.根据权利要求4所述的传输方法,其特征在于, 10. The transmission method according to claim 4, characterized in that,
所述DCI format X是独立的下行控制信息格式,此时该DCI format X还携带与DCI format 0/1A格式区分的比特信息。 The DCI format X are separate downlink control information format, at which point the DCI format X-bit information also carries with DCI format 0 / 1A format distinguished.
11.一种载波聚合场景下系统信息的传输系统,其特征在于,所述传输系统包括:基站和用户设备UE,其中: A carrier aggregation scenario in system information transmission system, characterized in that said transmission system comprising: a base station and the UE user equipment, wherein:
基站,用于为待发送的系统信息选定分量载波,在选定载波上向用户设备UE发送所述待发送的系统信息,其中,在选定的分量载波上利用具有载波指示特征的无线网络临时标志或携带载波指示信息的下行控制信息格式确定待发送的系统信息所对应的分量载波; Base station for the selected component carrier is system information to be transmitted, the UE transmits the system information to be transmitted to the user equipment on the selected carrier, wherein the carrier using a wireless network having characteristics indicated on the selected component carrier temporary flag indicating or carrying the downlink carrier component carrier control information determines information to be transmitted by system information corresponding to the format;
用户设备UE,用于接收在选定的分量载波上从基站发送的所述系统信息,利用具有载波指示特征的无线网络临时标志或下行控制信息格式里的载波指示信息区分出该系统信息对应的分量载波。 The UE user equipment, for receiving the system information on the selected component carrier transmitted from the base station, the wireless network using the temporary flag indicating feature having a carrier or a downlink control information format in the indication information carrier out of the system to distinguish information corresponding to component carrier.
12.根据权利要求11所述的传输系统,其特征在于, 12. The transmission system according to claim 11, wherein,
所述基站通过如下方式中一种或它们的组合为待发送的系统信息选定分量载波: The selected component carrier base station system information to be transmitted by way of one or a combination thereof:
高层信令指示选定分量载波;自动默认唯一的载波或唯一关联载波;从PDCCH分量载波集中随机选定分量载波、及采用驻留载波作为选定分量载波。 Higher layer signaling indicating the selected component carrier; automatically default to a unique carrier or carriers is uniquely associated; concentrated PDCCH from a randomly selected component carrier component carrier, and the use of the carrier as the selected component carriers reside.
13.根据权利要求11或12所述的传输系统,其特征在于, 13. The transmission system according to claim 11 or claim 12, wherein,
所述基站在选定的分量载波上利用具有载波指示特征的无线网络临时标志或携带载波指示信息的下行控制信息格式确定待发送的系统信息所对应的分量载波时,是通过定义一种载波指示无线网络临时标识值CI-RNTI或者定义一种新的下行控制信息格式DCI format X来实现。 Said base station having a wireless network using the temporary flag indicating feature carrier or carrier carries a downlink control information format of the indication information is determined to be the component carrier corresponding to the system information transmitted on the selected component carrier indicated by the carrier to define a radio network temporary identity value CI-RNTI or to define a new format of downlink control information DCI format X to achieve.
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