CN100512535C - Random access method of multi-carrier covering of TD-SCDMA system - Google Patents

Random access method of multi-carrier covering of TD-SCDMA system Download PDF

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CN100512535C
CN100512535C CN 200410009312 CN200410009312A CN100512535C CN 100512535 C CN100512535 C CN 100512535C CN 200410009312 CN200410009312 CN 200410009312 CN 200410009312 A CN200410009312 A CN 200410009312A CN 100512535 C CN100512535 C CN 100512535C
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carrier frequency
channel
access
step
frequency
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CN1719932A (en
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溯 江
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中兴通讯股份有限公司
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Abstract

一种实现TD-SCDMA系统多载频覆盖的随机接入方法,将每个小区/扇区设为由多个载频组成的至少一个逻辑小区,使每个逻辑小区中一个载频做为导频载频,其它频点的载频做为辅助载频,该导频载频在下行同步时隙发送下行同步信道,该辅助载频的下行同步时隙处于闭塞状态;设该导频载频和辅助载频使用相同的扰码和基本训练序列码;公共控制信道配置在该导频载频的TS0,用于承载来自传输信道的数据,并提供覆盖整个小区/扇区的系统消息广播;同时将承载接入信道和寻呼信道的辅助公共控制信道和寻呼指示信道配置在该导频载频;在该导频载频和辅助载频上配置有前向物理接入信道和随机接入信道;终端设备UE在导频载频的UpPCH信道接入,或者在辅助载频的UpPCH信道接入。 TD-SCDMA system for implementing a multi-carrier frequency coverage random access method, each cell / sector to a plurality of carrier frequencies composed of at least one logic cell, each logic cell as a pilot carrier frequency frequency carrier frequency, carrier frequency as a frequency other auxiliary carrier, the pilot carrier frequency downlink synchronization channel transmitted in a downlink synchronization time slot, the carrier frequency of the auxiliary slot in the closed state of the downlink synchronization; provided the pilot carrier frequency and an auxiliary carrier frequency using the same scrambling code and basic training sequence code; common control channel disposed in the pilot TS0, carrier frequency, used to carry data from the transmission channel, and provide coverage throughout the cell / sector system message; while carrying the secondary access channel and the paging channel, common control channel and a paging indicator channel disposed in the pilot carrier frequency; pilot carrier frequency and the secondary carrier frequency are arranged on a forward physical access channel and the random access into the channel; UpPCH terminal apparatus UE in the pilot channel carrier frequency of access, or access channel UpPCH auxiliary carrier frequency.

Description

一种TD-SCDMA系统多载频覆盖的随机接入方法 One kind of a multi-carrier TD-SCDMA system random access method of frequency coverage

技术领域 FIELD

本发明涉及一种移动通信技术,尤其涉及一种移动通讯系统多载频覆盖的随机接入方法。 The present invention relates to a mobile communication technology, and particularly relates to a random access method for a mobile communication system is a multi-carrier coverage.

背景技术 Background technique

TD-SCDMA(Time Division-Synchronization Code Division Multiple Access)是ITU正式发布的第三代移动通信空间接口技术规范之一,TD-SCDMA 系统同其它移动通信系统一样,为了满足移动通信市场不断增长的需求,在同一扇区/小区进行多载频覆盖将是TD-SCDMA系统增大系统容量的重要手段。 TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) is one of ITU official release of the third generation mobile communications air interface specifications, TD-SCDMA system As with other mobile communication systems, mobile communications market in order to meet growing demand , multi-carrier coverage in the same sector / cell will be an important means of TD-SCDMA system to increase system capacity.

目前Uu接口对于无线资源的操作、配置都是针对一个载频进行的,在Iub 接口小区建立的过程中一个小区(Cell)也是只配置了一个绝对频点号;如果是多载频,则每个载频被当作一个逻辑小区。 Currently Uu interface to the operation of radio resources, is configured for a carrier frequency, and during the Iub interface to establish a cell in a cell (the Cell) is configured with only an absolute frequency point number; if it is a multi-carrier frequency, each carrier frequencies are treated as one logical cell. 例如,对于三扇区三载频的情况,则认为有9个逻辑小区,针对每个小区完成独立的操作,也即9个小区发送各自的导频和广播信息。 For example, in the case of three sector three carrier frequencies, that is nine logical cells, independent operation is completed for each cell, i.e. cells 9 each transmitted pilot and broadcast information. 这样,多载频系统的每个载频都必须配置一套完整的公共信道,而其中的广播信道(BCH)、接入信道(FACH)和分组信道(PCH)都为全向信道。 Thus, a multi-carrier system, each carrier frequency must be configured with a complete set of common channel, and wherein the broadcast channel (the BCH), access channel (FACH) and packet channels (PCH) are omnidirectional channel. 则多载频基站在实际组网时不但对发射机功率要求很高,而且,在同频组网的情况下,载频间广播信道的干扰也很严重,同时系统的效率也非常低。 In the multi-carrier base station transmitter only when the actual network demanding power, and, in the case of co-frequency networking, broadcast channel interference between the carrier frequency is also very serious, while the efficiency of the system is very low. 在图1中,揭示了一种典型情况,它是一个工作于多载频频率的蜂窝移动通信网,如果此网络使用10MHz带宽,每个基站工作在相同的6个载频频率上。 In Figure 1, it discloses a typical case, it is operating in a multi-carrier cellular mobile communication network frequencies, if this network uses 10MHz bandwidth in each work station 6 on the same carrier frequency. 一个终端如果处于小区交界处,它将面临如下具体问题: If the terminal is in a cell junction, it faces the following specific problems:

1、小区搜索困难。 1, the cell search difficult. 为了解决TDD系统在蜂窝网下的小区初始搜索问题, TD-SCDMA设计了独特的帧结构,通过下行导引时隙(DwPTS)实现小区搜索。 In order to solve the problem TDD system the initial cell search in a cellular network, TD-SCDMA frame structure unique design, realized by the cell search for a downlink pilot timeslot (DwPTS). 此时隙中没有业务数据,信噪比很高。 This slot no business data, a high signal to noise ratio. 而在图l所示网络中,由于相邻小区都将在此频率发射DwPTS,码不同,基站离距离终端的位置又相差不大,终 In the network shown in FIG. L, since the neighboring cell will transmit the DwPTS this frequency, different codes, the base station and the terminal position of the distance or less, the final

5端接收此导引信号的信噪比可能在-5dB,甚至更差,而且,相邻载频均差不多。 5 receives the end of the pilot signal to noise ratio may be -5 dB, and even worse, and, adjacent carrier frequencies are the same. 这样,将使初始搜索非常困难。 In this way, the initial search will be very difficult.

2、 终端测量复杂。 2, the terminal measures a complex. 由于每个载频均为一个小区,图l中此终端将可能测量到邻近18个小区有差不多相同的信号电平。 Since the carrier frequencies are each a cell, Figure l may be measured to the terminal neighboring cells 18 have almost the same signal level. 在目前标准中,终端只测量6 个最强的小区,面临远远多于此数量的小区,终端完全可能陷入复杂的、难以判别的测量过程中。 In the current standard, the terminal measures only six strongest cell, facing far more than this number of cells, may well fall into the terminal complex, difficult to determine the measurement process.

3、 切换困难。 3, switching difficult. 上述的测量结果送到无线网络控制器RNC,将导致切换判定上的困难,并将导致不停的切换过程,使系统负荷明显增加。 The above measurement results to the RNC radio network controller, the handover decision result in difficulties, and will result in non-stop switching process, so that a significant increase in system load. 也可能导致错误的切换判定,降低系统的服务质量。 The switch may also lead to wrong judgment, reduce the quality of service system.

4、 系统效率低。 4, low system efficiency. 大量的测量结果送到RNC,不停的切换过程,必然将严重降低系统的效率。 A large number of measurement results to the RNC, kept switching process, inevitably will seriously reduce the efficiency of the system.

发明内容 SUMMARY

本发明所要解决的技术问题是提供一种TD-SCDMA系统多载频覆盖情况下的随机接入方法,以解决小区搜索困、终端测量复杂、切换困难和系统效率低的问题。 The present invention solves the technical problem is to provide a multi-carrier TD-SCDMA system random access method in the frequency coverage, cell search to solve the difficulties, measurement of the terminal complex, difficult and low switching system efficiency.

为了实现上述目的,本发明提供了一种TD-SCDMA系统多载频覆盖随机接入方法,包括如下步骤: To achieve the above object, the present invention provides a TD-SCDMA system, the multi-frequency coverage random access method, comprising the steps of:

通过设置每个小区/扇区为由多个载频组成的至少一个逻辑小区;使每个小区中一个载频做为导频载频,其它频点的载频做为辅助载频;该导频载频在DwPTS时隙发送下行DwPCH信道;该辅助载频的DwPTS时隙处于闭塞状态, 不发送下行DwPCH同步信道。 By providing each cell / sector by at least a plurality of logic cell carrier frequency thereof; in each cell as a pilot carrier frequency carrier frequency, carrier frequency as a frequency other auxiliary carrier frequency; the guiding frequency carrier frequency time slot DwPTS transmits downlink channel DwPCH; DwPTS of the auxiliary carrier frequency time slot in the closed state, does not transmit a downlink synchronization channel DwPCH.

设置该导频载频和辅助载频使用相同的扰码和基本midamble码;公共控制信道P-CCPCH(Primary Common Control Physical Channel)配置在导频载频的TS0,用于承载来自传输信道BCH的数据,提供覆盖整个小区/扇区的系统消息广播;承载传输信道FACH和寻呼信道PCH的辅助公共控制信道(S-CCPCH, Secondary Common Control Physical Channel)和寻呼指示信道(PICH)也配置在导频载频。 The carrier frequency is provided, and the auxiliary pilot carrier using the same scrambling code and basic midamble code; common control channel P-CCPCH (Primary Common Control Physical Channel) disposed in the pilot carrier frequency TS0, used to carry from the transmission channel BCH data is provided to cover the entire cell / sector system message; secondary common control channel carrier transport channel FACH and PCH is a paging channel (S-CCPCH, secondary common Control Physical channel) and a paging indicator channel (the PICH) also arranged in The pilot carrier frequency.

该导频载频和辅助载频上都可以配置有前向物理接入信道(F-PACH)和随机接入信道(P-RACH, Physical Random Access Channel)。 The pilot carrier and the auxiliary carrier frequency can be configured with a forward physical access channel (F-PACH) and a random access channel (P-RACH, Physical Random Access Channel). 对于一个有 For a

6N个载波的多载波小区,可以配置m个UpPTS载波,l〈=m <=N,根据系统配置要求,配置UpPTS信道,导频载频和辅助载频的UpPTS都可以用于随机接入。 6N carriers of multicarrier cells, UpPTS can be configured carriers of m, l <= m <= N, according to the system requirements, the configuration UpPTS channel, a pilot carrier and the auxiliary carrier frequency UpPTS are used for random access. UE可以在导频载频的UpPCH信道接入,也可以在辅助载频的UpPCH信道接入。 The UE may UpPCH pilot carrier frequency channel access, the secondary carrier may be UpPCH channel access frequency.

导频载频和辅助载频使用相同的上行同步码SYNC-UL。 The pilot carrier and the auxiliary carrier frequency using the same uplink sync code SYNC-UL. 由于导频和辅助载频的频点不同,不同频点上使用相同的SYNC-UL码不会有大的相互干扰。 Since the pilot carrier frequencies and different auxiliary frequency, using the same code on different SYNC-UL frequency will not have a big mutual interference. 这种多载频随机接入方式,可以减少多用户接入时碰撞和阻塞的产生。 Such multi carrier frequency random access manner, collisions may be reduced and blocking the access of multiple users.

每个逻辑小区/扇区的不同载频,可以设置不同的接入优先级。 Each logical cell / sector different carrier frequencies may be set different access priority. 接入优先级,在BCH信道的系统消息中广播。 Access priority, in a system message broadcast in the channel BCH. UE根据系统消息,随机选择优先级髙的载频的UpPCH信道接入。 A system according to UE message, the randomly selected priority Gao UpPCH carrier frequency channel access. 降低接入碰撞严重的载频的接入优先级,提高接入碰撞很少的载频的优先级,可以起到接入负荷分担调度的作用。 Seriously reduce access collisions carrier frequency access priority, the access priority is increased little collision carrier frequency, it can play the role of scheduling the access load sharing.

随机选择优先级高的载频的UpPCH信道接入是从可用的接入载频中,随机选择一个载频接入,所用的随机函数必须满足每个允许的选择被选中的概率与接入优先级相关,接入优先级髙的载频,被选中的概率大;接入优先级低的载频,被选中的概率小。 Randomly selected high priority channel access UpPCH carrier frequency from the carrier frequencies available access randomly select a carrier frequency of access, the random function used must meet the probability for each of the allowed selections is chosen with the access priority level related to access priority Gao carrier frequency, high probability of being selected; access to low-priority carrier frequency, small probability of being selected.

在小区半径很大的广覆盖小区,UE可能距离基站很远。 In a large cell radius wide cell coverage, UE may be very far from the base station. 需要提高时间提前量TA,保证同一时隙,不同UE的上行信号,同步到达节点B (NodeB)。 We need to increase the TA timing advance, to ensure that the same time slot, different UE uplink signals, synchronized to node B (NodeB). 在系统消息中提高辅助载频的接入优先级。 Improved access priority secondary carrier frequency in a system message. 由于辅助载频的DwPTS时隙不发送数据,UE可以选取比导频载频接入更大的时间提前量TA (Tirae Advance), 不必担心与DwPCH碰撞。 Since the auxiliary carrier frequency time slot DwPTS does not transmit data, UE can select the carrier frequency than the pilot greater access timing advance TA (Tirae Advance), and not worry about the collision DwPCH. 这样,有利于突破时间提前量TA的限制,增大小区的覆盖半径。 This will help break through the timing advance TA limit, increasing the coverage radius of the cell.

本发明采用的该TD-SCDMA系统多载频覆盖情况下的随机接入方法,UE可以根据优先级,在导频载频或者辅助载频上接入系统,减少多用户接入时碰撞和阻塞的产生。 The TD-SCDMA system according to the present invention employs a multi-carrier random access method in the case where the frequency coverage, the UE priority level, when the pilot carrier or auxiliary carrier frequency access system, reduce multiple user access according to a collision and congestion generation. 接入优先级的设置可以对接入负荷进行分担,进一步减小碰撞的发生。 Access priority may be provided to share the load of the access, to further reduce the occurrence of a collision. 覆盖半径很大的小区,引导UE在辅助载频接入网络,有利于突破时间提前量TA的限制,增大小区的覆盖半径。 Large cell coverage radius, the radius covering the guide UE secondary carrier frequency in the access network, is conducive to a TA breakthrough time limit, increasing the cell.

下面结合附图对本发明的具体实施方案进一步详细说明。 BRIEF detailed description of specific embodiments further below in connection with the present invention.

附图说明 BRIEF DESCRIPTION

图1是TD-SCDMA系统多载频覆盖示意图 FIG 1 is a TD-SCDMA system, the multi-frequency coverage schematic

7说明书第4/6页 Specification No. 7 4/6

图2是Cel 1一A多载频小区的物理帧格式图3是小区信道配置 FIG 2 is a Cel 1 A multiple physical frame format of FIG. 3 is a carrier-frequency cell-cell channel configuration

图4是小区搜索和随机接入过程的流程图 FIG 4 is a flowchart of cell search and random access procedure

具体实施方式 Detailed ways

在图1中,揭示了一种TD-SCDMA系统多载频覆盖情况,UE位于4个多载频小区Cel^A、 Cell—B、 Cellj:和Cell—D的覆盖交界处,每个小区有6个载波。 In Figure 1, it discloses a TD-SCDMA system, the multi-frequency coverage, the UE located in the cell over four carrier frequencies Cel ^ A, Cell-B, Cellj: covering the junction, and Cell-D, each cell has 6 carriers. 小区Cell一A、 Cell一B和Ce11—C中f3做为导频频点,辅助载频是fl、 f2、 f4、 f5和f6。 A cell Cell A, Cell B, and a Ce11-C as the pilot frequency f3 point, the auxiliary carrier frequency is fl, f2, f4, f5 and f6. 小区Cel1—D中f6做为导频频点,辅助载频是fl、 f2、 f3、 f4和f5。 Cells Cel1-D in point f6 as pilot frequencies, a secondary carrier frequency fl, f2, f3, f4 and f5.

在图2中,揭示了小区CelLA多载频小区的物理帧结构,以小区Cel1—A 为例,小区Cell一A是6载频小区,导频载频是f3, f3载频的DwPTS时隙发送下行导频码SYNC-DL。 In FIG 2 discloses a frame structure of a physical cell CelLA multi-frequency cell to the cell Cel1-A as an example, a cell Cell A cell is a carrier 6, the pilot carrier frequency is f3, f3 carrier frequency time slot DwPTS transmitting a downlink pilot code SYNC-DL. 其它频点fl、 f2、 f4、 f5、 f6是"辅助载频",这些载频的DwPTS时隙处于闭塞(Idle)状态,不发送任何数据,不发送下行DwPCH同步信道。 Other frequency fl, f2, f4, f5, f6 is the "secondary carrier", the carrier frequency time slot DwPTS is closed (the Idle) state, no data is transmitted, not to transmit a downlink synchronization channel DwPCH.

TD-SCDMA的码资源被分成32个码组。 TD-SCDMA code resources are divided into 32 code groups. 相邻小区使用不同的码组。 Neighboring cells use different codes. 例如: Cell—A配置码组l。 For example: Cell-A configuration code group l. 小区Cell一A的f3载频的DwPTS时隙,发送的下行导频码从码组1中选择,即SYNC-DL0。 Cell A cell f3 carrier frequency of a time slot DwPTS, the downlink pilot symbols transmitted from a code group selection, i.e. SYNC-DL0. 同一个小区内,使用相同的扰码和基本用户训练序列码(midamble码)。 In the same cell use the same scrambling code and basic user training sequence code (the midamble code). 比如,Cell—A的扰码和基本midamble从码组l中选取:扰码Scrambling code l禾口Midamble 1。 For example, Cell-A scrambling code and basic midamble code groups selected from - l: scrambling Scrambling code l Wo port Midamble 1.

每个小区/扇区导频载频和辅助载频,选取相同的上行导频码。 Each cell / sector pilot carrier frequency and the secondary carrier frequency, the uplink pilot select the same code. 例如Cell—A从码组1中选取8个上行导频码SYNC-UPO... 7。 Cell-A, for example, select eight uplink pilot symbols SYNC-UPO ... 7 from one code group.

在图3中,进一步揭示了小区信道配置,小区的公共控制信道P-CCPCH, 配置在导频载频的TSO。 In FIG 3, further discloses a cell channel configuration, the cell common control channel P-CCPCH, disposed in the pilot carrier frequency TSO. S-CCPCH配置在导频载频上,用于承载来自传输信道FACH和PCH的数据。 S-CCPCH configuration in the pilot carrier frequencies for carrying data from the transport channel FACH and PCH. S-CCPCH可以配置在任意下行时隙,也可以与P-CCPCH时分复用在TS0。 S-CCPCH can be configured in any downlink slot, it may be time division multiplexed with the P-CCPCH TS0. P-CCPCH广播本小区其它载频的频点和配置,相邻小区的导频频点,本小区各个载频的接入优先级。 P-CCPCH present broadcast cell other frequency carrier frequency and configuration, neighboring cell point pilot frequencies, each cell of the present carrier frequency of access priority. 各个载频都配置有FPACH和PRACH, UE 可以在导频载频上接入,也可以在其它辅助载频上接入。 Each carrier frequency are arranged and FPACH PRACH, UE can access on the frequency of the pilot carrier, the access frequency may be in the other auxiliary carrier.

在图4中,揭示了本发明的小区搜索和随机接入过程,移动终端设备(UE) 小区搜索和接入网络的过程如下: In FIG. 4, the present invention discloses a cell search and a random access procedure, the process of the mobile terminal equipment (UE) and an access network cell search as follows:

步骤S100,在TDD频段内各个载频中搜索导频频点和DwPTS位置。 Step S100, the frequency point and searching for a pilot in the DwPTS position of each TDD carrier frequency bands. UE开机 UE boot

8后,首先测量TDD频段内各个载频的宽带功率。 8, the first wideband power measurement of each TDD carrier frequency bands. 将测得的宽带功率按照强弱排序,然后从最强的频点开始搜索DwPTS。 The wide band power measured in accordance with the strength of the sort, then starting from the strongest frequency search DwPTS. DwPTS时隙两端各有一个零功率区, 每帧都以恒定的功率发送。 Both ends of each time slot DwPTS a zero power zone, every frame transmitted at a constant power. 根据DwPTS的特征,可以初步确定其位置。 According to a feature of DwPTS, you can initially determine its position.

步骤S110,在DwPTS时隙搜索下行同步码SYNC-DL。 Step S110, the search in the DwPTS timeslot downlink synchronization code SYNC-DL. 有了初步的位置,再根据匹配滤波的原理确定小区使用的SYNC-DL码和时隙的准确位置。 With the initial position, and then to determine the exact position of SYNC-DL codes and time slots used by the cell in accordance with principles of the matched filtering. 确定了小区的SYNC-DL码,也就确定了小区的码组。 Determining the cell SYNC-DL code, the code will determine the set of cells.

步骤S120,确定小区使用的基本用户训练序列码和扰码(Screambling Code)。 Step S120, the user determines the basic training sequence and scrambling codes (Screambling Code) used by the cell. Midarable码的确定基于导频频点TS0的第l或第2信道化码,因为这两个码道通常发射很强,覆盖整个小区/扇区。 Midarable code determined based on pilot frequency or the second point of l channelization codes of TS0, because the two code channels typically emits a strong, covering the entire cell / sector. 依次用小区所在码组的4个Midamble码,计算信道的冲激响应,最大者为小区使用的Midamble码。 Midamble codes successively by four code groups of cells where the calculated impulse response of the channel, the largest of Midamble codes used by the cell. 扰码和Midamble码有固定的对应关系,确定了Midamble码也就确定了扰码Scrambling,每个小区/扇区的所有载频都使用相同的基本Midamble码和扰码。 Midamble codes and scrambling codes have a fixed correspondence relationship determined Midamble scrambling codes is also determined a Scrambling, each cell / sector use the same carrier frequencies in all basic Midamble codes and scrambling codes. 步骤S130,判断Midamble码搜索是否成功,若成功,则继续,若失败, 则返回执行步骤SIOO。 Step S130, the judge Midamble code search is successful, if successful, continue, if fails, proceed to step SIOO return.

步骤S140,建立基本公共控制信道(P-CCPCH)同^和读取系统广播消息。 Step S140, the establishment of the basic common control channel (P-CCPCH) reading system broadcast messages and with ^. UE在导频频点的TSO时隙,第1或者第2信道,同步P-CCPCH信道,并且读取P-CCPCH信道上广播的系统消息。 The UE timeslot TSO point pilot frequencies, the first or second channel, a synchronization channel P-CCPCH, P-CCPCH channel and reads the broadcast message system. 在多载波覆盖的情况下,系统消息中广播当前小区辅助载频的频点和时隙配置信息(例如TSO是否扩展),相邻小区的导频频点、导频码、基本Midamble和扰码信息。 In the case of a multi-carrier coverage, the broadcast system information of the current cell auxiliary frequency carrier frequency and time slot configuration information (e.g., whether the extended TSO), neighboring cell point pilot frequencies, pilot code, scrambling code information and the basic Midamble . 系统消息中广播辅助载频的接入优先级。 System message broadcast access priority secondary carrier frequency.

步骤S150,根据系统消息选择接入的导频。 Step S150, the frequency selecting an access system according to the guide message. UE可以在导频载频,也可以在辅助载频接入网络。 The UE may pilot carrier frequency, the carrier frequency may be assisted access network. 根据系统广播消息,UE优先在优先级高的载频的UpPTS 时隙发送上行同步码SYNC-UL。 The system broadcast message, UE preferentially transmits the uplink synchronization code SYNC-UL higher priority in the carrier frequency time slot UpPTS. 这样可以减少接入碰撞和进行小区内多个载频之间的负荷分担。 This can reduce access collisions between the load carrier and a plurality of frequency sharing within a cell.

步骤S160,节点B (NodeB)收到上行同步码SYNC-UL后,在与UpPTS时隙同一载频的FPACH信道上,发送下行消息,调整UE的上行同步和初始功率。 Step S160, the Node B (NodeB) after receiving the uplink synchronization code SYNC-UL, FPACH channel in the UpPTS time slot and the same carrier frequency, transmitting a downlink message, the UE adjusts the uplink synchronization and initial power.

步骤S170, UE接收到FPACH信道消息后,调整上行同步和初始功率;在同一载频的PRACH信道上发送RRC连接请求消息。 After step S170, UE receives FPACH channel message, the uplink synchronization and initial power adjustment; at the same carrier frequency PRACH channel transmits RRC connection request message.

步骤S180, NodeB在FACH信道上发送RRC连接建立消息给UE,分配专用信道给UE。 Step S180, NodeB transmits RRC connection setup message to the UE, dedicated channel is allocated to the UE on the FACH channel. 分配的专用信道限定在UE接入的载频上。 Allocated dedicated channel defined on the carrier frequency-UE. FACH信道配置在导频载频 FACH channel disposed in the pilot carrier frequency

9步骤S190, UE在分配的专用信道上发送RRC连接建立完成消息。 9 step S190, UE sends an RRC connection setup complete message on a dedicated channel allocated. 步骤S199,随机接入过程结束。 Step S199, the random access procedure ends.

上述内容仅为本发明的最佳实施方案,其并非用来限制本发明的具体实施方式,凡根据本方法的主要发明构思而进行的修改和变动,均应属于本发明权利要求书所要求的保护范围。 Only the foregoing preferred embodiment of the present invention, which is not intended to limit specific embodiments of the present invention, modifications and variations of the present invention, where the method according to the main concept is carried out, should belong to the claimed invention as claimed in the claims protected range.

Claims (10)

1、一种TD-SCDMA系统多载频覆盖的随机接入方法,包括如下步骤:将每个小区/扇区设置为由多个载频组成的至少一个逻辑小区,使每个逻辑小区中一个载频做为导频载频,其它频点的载频做为辅助载频,该导频载频在下行同步时隙DwPTS发送下行DwPCH同步信道,该辅助载频的下行同步时隙DwPTS处于闭塞状态,不发送下行DwPCH同步信道;设置该导频载频和辅助载频使用相同的扰码和基本训练序列码;公共控制信道P-CCPCH配置在该导频载频的TSO,用于承载来自传输信道BCH的数据,并提供覆盖整个小区/扇区的系统消息广播;同时将承载接入信道FACH和寻呼信道PCH的辅助公共控制信道S-CCPCH和寻呼指示信道PICH配置在该导频载频;在该导频载频和辅助载频上配置有前向物理接入信道和随机接入信道;对于一个有N个载波的多载波小区,可以配置m个UpPTS载波,1<=m<=N, A multi-carrier TD-SCDMA system random access method in the video overlay, comprising the steps of: for each cell / sector is provided by at least one logical cell composed of a plurality of carrier frequencies, each logic cell in a pilot carrier as the carrier frequency, the other frequency carrier frequency as a secondary carrier frequency, the carrier frequency in the downlink pilot time slot DwPTS transmits downlink synchronization DwPCH synchronization channels, the auxiliary carrier frequency of the downlink synchronization time slot DwPTS is closed state and does not transmit downlink synchronization channel DwPCH; pilot set the carrier frequency and the secondary carrier frequencies using the same scrambling code and basic training sequence code; common control channel P-CCPCH arranged in the pilot carrier frequency of the TSO, for carrying from BCH transport channel data, and provide coverage throughout the cell / sector system message; while carrying the access channel and the paging channel PCH FACH secondary common control channel S-CCPCH, and paging indicator channels PICH disposed in the pilot carrier frequency; there is a forward physical access channel and the random access channel at the pilot carrier frequency and the secondary carrier frequency configuration; for a N carriers of multicarrier cells, can be configured of m UpPTS carriers, 1 <= m <= N, 据系统配置要求,配置UpPTS信道,移动终端设备UE在导频载频的UpPCH信道接入,或者在辅助载频的UpPCH信道接入。 According to system requirements, UpPTS channel configuration, the mobile terminal apparatus UE in the access UpPCH pilot channel carrier frequency, or channel access UpPCH secondary carrier frequency.
2、 根据权利要求1所述的TD-SCDMA系统多载频覆盖的随机接入方法,其特征在于,将每个逻辑小区/扇区的不同载频设置不同的接入优先级,并将该接入优先级在传输信道BCH的系统消息中广播;移动终端设备UE根据该系统消息,随机选择优先级高的载频的UpPCH信道接入。 2, the TD-SCDMA system according to claim 1 multicarrier frequency coverage random access method, wherein, each carrying a different logical cell / sector pilot set different access priority, and the access priority system broadcast channel BCH message transmission; the mobile terminal UE according to the system message, randomly selected high priority UpPCH carrier frequency channel access.
3、 根据权利要求2所述的TD-SCDMA系统多载频覆盖的随机接入方法,其特征在于,所述的随机选择优先级高的载频的UpPCH信道接入是从可用的接入载频中,随机选择一个载频接入,所用的随机函数必须满足每个允许的选择被选中的概率与接入优先级相关,接入优先级高的载频,被选中的概率大; 接入优先级低的载频,被选中的概率小。 3, according to the TD-SCDMA system as claimed in claim 2, a multi-carrier frequency coverage random access method, wherein the randomly selected high priority channel carrier frequency UpPCH said access is an access from the available carrier frequency randomly select a carrier frequency of access, the random function used must meet the selection probability of each selected to allow access priority related access priority higher carrier frequency, a large probability of being selected; access low priority carrier frequency, small probability of being selected.
4、 根据权利要求1或2所述的TD-SCDMA系统多载频覆盖的随机接入方法, 其特征在于,每个逻辑小区/扇区内的导频载频和辅助载频使用相同的上行同步码SYNC-UL。 4, TD-SCDMA system according to claim 1 or claim 2 carrier multi-frequency coverage random access method, wherein the guide in each logical cell / sector secondary carrier frequency carrier frequency and the uplink frequency using the same synchronization code sYNC-UL.
5、 根据权利要求1或2所述的TD-SCDMA系统多载频覆盖的随机接入方法, 其特征在于,通过在该系统消息中提高辅助载频的接入优先级,使距离基站较远的移动终端设备iM选取比该导频载频接入更大的时间li前量TA。 5, TD-SCDMA system according to claim 1 or claim 2, wherein the random access method of multi-carrier coverage frequency, wherein, by increasing access priority secondary carrier frequency in the system message, so far from the base station iM mobile terminal than the selected amount of pilot carrier frequency before TA greater access time li.
6、 根据权利要求1或2所述的TD『SCDMA系统多载频覆盖的随机接入方法, 其特征在于,该移动终端设备UE随机接入的步骤进一步包括:步骤S100,在TDD频段内各个载频中搜索导频频点和下行同步时隙DwPTS 位置;步骤S110,在下行同步时隙DwPTS搜索下行同步码SYNC-DL; 步骤S120,确定小区使用的基本用户训练序列码和扰码; 步骤S130,判断该用户训练序列码搜索是否成功,若成功,则继续执行下一步,若失败,则返回执行步骤S100;步骤S 140,建立基本公共控制信道同步和读取系统消息; 步骤S150,根据该系统消息选择接入的导频;步骤S160,节点B收到上行同步码SYNC-UL后,在与上行同步时隙UpPTS 同一载频的前向物理接入信道FPACH上,发送下行消息,调整移动终端设备UE的上行同步和初始功率;步骤S170,该移动终端设备UE接收到前向物理接入信道FPACH的消息后, 调整上 6, according to claim 1 or 2, TD 'SCDMA system multiple carrier frequency coverage random access method, wherein the step of UE random access of the mobile terminal device further comprises: step S100, the respective frequency band in a TDD searching for a pilot carrier frequency and the downlink frequency point synchronization time slot DwPTS positions; step S110, the downlink synchronization time slot DwPTS search downlink synchronization code sYNC-DL; step S120, the user determines the basic training sequence and scrambling codes used by the cell; step S130 determining whether the user training sequence code search is successful, if successful, proceed to the next step, if failed, execution returns to step SlOO; step S 140, to establish the basic common control channel to synchronize and read the system message; step S150, the based on the selecting an access system messages pilot; step S160, the node B receives the uplink synchronization code sYNC-UL, the physical access to the FPACH channel, transmits a downlink message before UpPTS uplink synchronization time slot of the same carrier frequency, the adjustment movement an uplink synchronization of the UE terminal device and the initial power; after step S170, the UE receives the mobile terminal device before FPACH to a physical access channel message, the adjustment 行同步和初始功率,并在同一载频的随机接入信道PRACH上发送无线资源控制RRC连接请求消息;步骤S180,节点B在前向接入信道FACH上发送无线资源控制RRC连接建立消息给移动终端设备UE,分配专用信道给移动终端设备UE;步骤S190,移动终端设备UE在分配的专用信道上发送无线资源控制RRC连接建立完成消息。 Transmitting the random access channel PRACH initial synchronization and power lines, and at the same carrier frequency in a radio resource control (RRC) connection request message; step S180, the node B first transmits the RRC, the access channel a connection establishment message to the mobile FACH terminal device UE, a dedicated channel allocated to the mobile terminal apparatus UE; step S190, the mobile terminal apparatus UE transmits a radio resource control dedicated channel allocated RRC connection setup complete message.
7、 根据权利要求6所述的TD-SCDMA系统多载频覆盖的随机接入方法,其特征在于,所述的步骤S180中分配专用信道给移动终端设备UE是在UE接入的载频上分配专用信道。 7. The TD-SCDMA system according to claim 6 random access method in a multicarrier frequency coverage, characterized in that the dedicated channel is allocated to the mobile terminal UE according to step S180 is accessed by the UE on the carrier frequency allocated dedicated channel.
8、 一种移动终端设备随机接入方法,适用于TD-SCDMA系统多载频覆盖的环境,其特征在于,包括如下步骤:步骤SIOO,在TDD频段内各个载频中搜索导频频点和下行同步时隙DwPTS 位置;步骤SllO,在下行同步时隙DwPTS搜索下行同步码SYNC-DL; 步骤S120,确定小区使用的基本用户训练序列码和扰码;步骤S招f ,"判渐该用户训练序列码搜索是否^成功/'若成功,则继续执行下一步,若失败,则返回执行步骤S100;步骤S140,建立基本公共控制信道同步和读取系统消息;步骤S150,根据该系统消息选择接入的导频,其中,该系统消息中包含已设置的不同接入优先级消息;步骤S160,节点B收到上行同步码SYNC-UL后,在与上行同步时隙UpPTS 同一载频的前向物理接入信道FPACH上,发送下行消息,调整移动终端设备UE的上行同步和初始功率;步骤S170,该移动终端设备UE接收到前向物理接 8, a mobile terminal random access method for a TD-SCDMA system, the multi-frequency coverage environment, characterized by comprising the following steps: Step SIOO, in each TDD frequency band searching for a pilot carrier frequency and the downlink frequency point synchronization time slot DwPTS positions; step SllO, downlink synchronization time slot DwPTS search downlink synchronization code sYNC-DL; step S120, the user determines the basic training sequence and scrambling codes used by the cell; step S strokes f, "the user gradually training sentence successful searches whether the sequence code ^ / 'if successful, proceed to the next step, if failed, execution returns to step SlOO; step S140, the basic common control channel to establish synchronization and reads the system message; step S150, the selected access system based on the message the pilot, wherein the system information message contains a different access priority has been set; step S160, the node B receives the uplink synchronization code sYNC-UL, forward uplink synchronization with the carrier frequency in the same time slot UpPTS the FPACH physical access channel, transmits a downlink message, the mobile terminal apparatus UE adjusts the uplink synchronization and initial power; step S170, the UE receives the mobile terminal device to a physical connection to the front 入信道FPACH的消息后, 调整上行同步和初始功率,并在同一载频的随机接入信道PRACH上发送无线资源控制RRC连接请求消息;步骤S180,节点B在前向接入信道FACH上发送无线资源控制RRC连接建立消息给移动终端设备UE,分配专用信道给移动终端设备UE;步骤S190,移动终端设备UE在分配的专用信道上发送无线资源控制RRC 连接建立完成消息。 After the channel FPACH message, adjusting uplink synchronization and initial power, the transmission radio resource control RRC connection request message on a random access channel (PRACH) and at the same carrier frequency; step S180, the node B first sends a radio Access Channel FACH resource control RRC connection setup message to the mobile terminal UE, dedicated channel is allocated to the mobile terminal apparatus UE; step S190, the mobile terminal apparatus UE transmits a radio resource control RRC connection setup complete message on a dedicated channel allocated.
9、 根据权利要求8所述移动终端设备随机接入方法,其特征在于,在步骤S150中,该移动终端设备UE根据该系统消息选择接入优先级高的载频接入。 9. The method of claim 8 random access mobile terminal apparatus as claimed in claim, wherein, in the step S150, the mobile terminal apparatus UE selects a higher access priority access to the carrier frequency in accordance with the system message.
10、 根据权利要求8所述移动终端设备随机接入方法,其特征在于,所述的步骤S180中分配专用信道给移动终端设备UE是在UE接入的载频上分配专用信道。 10, 8 is moved according to the random access method for a terminal apparatus as claimed in claim, wherein the dedicated channel is allocated to the mobile terminal UE is allocated a dedicated channel in the UE accesses the carrier frequency in step S180.
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