CN100442876C - Method for realizing shared reverse signalling channel - Google Patents

Method for realizing shared reverse signalling channel Download PDF

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CN100442876C
CN100442876C CN 200610000940 CN200610000940A CN100442876C CN 100442876 C CN100442876 C CN 100442876C CN 200610000940 CN200610000940 CN 200610000940 CN 200610000940 A CN200610000940 A CN 200610000940A CN 100442876 C CN100442876 C CN 100442876C
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reverse
traffic channel
ms
signaling
transmit
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CN1867115A (en
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强 王
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华为技术有限公司
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Abstract

本发明涉及通讯技术领域中一种实现共享反向业务信道来传送反向信令的方法。 The present invention relates to a method for realizing communications art shared reverse traffic channel to transmit reverse signaling. 该方法包括:移动台MS通过反向业务信道发送带有用户标识的反向信令;基站控制器接收到所述反向信令后发送带有所述用户标识的应答消息给MS;MS接收到所述应答消息后,关闭在反向业务通道上的发射功率。 The method comprising: transmitting reverse signaling the mobile station MS with a subscriber identity via the reverse traffic channel; the base station controller receives the response message with the user identifier after the reverse signaling to the MS; MS receiving after the response to the message, the closed transmit power of the reverse traffic channel. 利用本发明所述方法可以使同一扇区载频下的用户共享一个或多个业务信道来传送反向信令,从而节省了系统资源,增加了系统容量。 Using the method of the present invention may be of the same carrier frequency in the sector of the one or more users to share traffic channel to transmit reverse signaling, thereby saving system resources, increases the system capacity.

Description

一种实现共享反向业务信道来传送反向信令的方法 A method for a shared reverse traffic channel to transmit reverse signaling to achieve

技术领域 FIELD

本发明涉及通讯技术领域,尤其涉及一种实现共享反向业务信道来传送反向信令的方法. The present invention relates to communication technologies, and in particular relates to a method for the shared reverse traffic channel to transmit reverse signaling implemented.

背景技术 Background technique

CDMA系统是当前主流移动通信系统之一,具有系统容量大、话音质量高、保密性强等优点.CDMA系统中反向逻辑信令信道分为r-csch (反向公共信令信道)和r-dsch (反向专用信令信道)两种.其中r-csch通常映射到R-ACH (反向接入信道)上;r-dsch則通常映射到R-FCH (反向基本信道)或R-DCCH (反向专用控制信道)上,这些反向物理信道可以统称为R-TCH A CDMA system is one of the major mobile communication system, the system having a large capacity, high voice quality, privacy, and other advantages .CDMA reverse logic system into signaling channel r-csch (reverse common signaling channel), and r -dsch (reverse dedicated signaling channel) two of which are typically mapped to the r-csch R-ACH (reverse access channel);. r-dsch usually mapped to the R-FCH (reverse fundamental channel) or R -DCCH upper (reverse dedicated Control channel), these reverse physical channels may be collectively referred to as R-TCH

(反向业务信道), (Reverse traffic channel),

CDMA协议规定,r-csch用于呼叫建立时传送反向呼叫信令,同一扇区栽频下的用户可以共享这个信道;而r-dsch则是用户专有的,是在呼叫建立后系统为用户分配的,用户可以用它传送自己的切换、功控等信令。 CDMA predetermined protocol, transmitting the reverse call signaling for call setup when the r-csch, the user pilot plant under the same sector can share the channel; and r-dsch is user-specific, in the call set-up after the system is assigned by the user, the user can switch its own transmission, signaling and other power control. 总之, r-csch或R-ACH^公共的信令信道;wisch或R-TCH则是专用的信令信道。 In summary, r-csch R-ACH ^ or common signaling channel; Wisch or R-TCH is a dedicated signaling channel.

集群通信系统作为一种专用调度通信系统,具有信道资源共享、用户分组、多级优先控制、系统容量大等特点。 Trunking communication system as a dedicated dispatching communication system having a shared channel resource, a user packet, the multi-stage priority control, the system capacity and other characteristics. 集群系统又称为PTT (按键讲话)系统,其通话模式为半双工,可以在一对用户间进行,即单呼;也可以在一个群组内的用户间进行,即组呼。 Also known as the PTT cluster system (push to talk) system, which is a half-duplex communication mode, can be performed between a pair of users, i.e. single call; may be carried out within a group between users, i.e. the group call. 用户需要讲话时按下PTT鍵向系统请f话权,系统授权后给用户一个提示,此时该用户可以开始讲话,对方或组 When the user presses the PTT button please f need to speak right words to the system, the system licensed to the user a prompt, at which point the user can begin speaking, the person or group

内用户可以听到讲话者的话音,讲话者松开PTT键停止讲话,在一次通话过程中可以有多次这样的PTT交互。 Within a user can hear the voice of the speaker, the speaker release the PTT key to stop speaking, there can be multiple interactions in such a PTT call. PTT这种半双工通话的特点,使得集群系统可以做到前反向信道共享,即前向一个业务信道给组内用户广播话音,反向一个信道用于讲话用户传送上行话音。 Such half-duplex PTT call features, such can be done before the cluster system sharing a reverse channel, to the user group to broadcast a voice traffic channel, i.e., before a reverse channel is used for transmitting the uplink user speaking voice.

目前,在CDMA系统上实现集群系统的功能是本领域内关注的一个研究方向。 Currently, functional cluster system in the CDMA system is a research direction in the art of attention. 与时分系统不同,由于CDMA协议和芯片的限制,CDMA的移动台在处于业务信道状态时,即通话状态下,无法同时工作在r-csch上,因此PTT话权请求信令的发送必须在业务信道上进行,而CD MA的业务信道是给每个通话中的用户各自独立分配的,无法进行共享。 And time division systems, due to the limitations CDMA protocol and chip, CDMA mobile station while in a traffic channel state, i.e. the call, does not work on the r-csch simultaneously, PTT speaking right request signaling to be in the business for channel, while the traffic channel is a CD MA call to each user independently assigned can not be shared.

针对上述问题,OMA (开放移动联盟)制定了PoC (基于蜂窝网的PTT)标准,其适用于具有一定数据业务能力的蜂窝系统,每个用户需要使用一对专用的前反向信道,通过数据业务的方式传递PTT信令。 For the above problem, the OMA (Open Mobile Alliance) has developed the PoC (based PTT cellular network) standard, which is applicable to certain data service capabilities of the cellular system, each user needs to use a pair of forward and reverse dedicated channel, the data PTT signaling transfer service mode. 但是该方法无法实现信道共享,且存在呼叫建立速度慢、语音时延高的缺陷。 However, this method can not realize channel sharing, and call setup is slow, high-delay voice defects.

现有技术又提出了PTT方案,其只能用于CDMA lx系统,每个用户需要使用一对专用的前反向信道,PTT信令在专用信道上发送。 PTT also proposed prior art solutions, which can only be used for CDMA lx system, each user needs to use a pair of forward and reverse dedicated channels, PTT signaling is sent on the dedicated channel. 该方案同样存在无法实现信道共享的缺陷,同时,在CDMA lx Release 0上的性能表现较差,只有在CDMA lXRelease A上才有较好的性能表现。 The solution also defective shared channel can not be achieved, at the same time, the poor performance in CDMA lx Release 0, and only have a better performance in CDMA lXRelease A.

发明内容 SUMMARY

本发明的目的在于提供一种实现共享反向业务信道来传送反向信令的方法,可以使同一扇区栽频下的用户共享一个或多个业务信道来传送反向信令,节省系统资源、增加系统容量。 Object of the present invention is to provide a method for a shared reverse traffic channel to transmit reverse signaling implemented, the user can make the pilot plant under the same sector share one or more traffic channel to transmit reverse signaling, to save system resources and increase system capacity.

本发明的目的是通过以下技术方案实现的: Object of the present invention is achieved by the following technical solution:

一种实现共享反向业务信道来传送反向信令的方法,包括: A、移动台MS从已经建立的反向业务信道中选择一条反向业务信道,通过选择的反向业务信道发送带有用户标识的反向信令;B、接收基站控制器发送的带有所述用户标识的应答消息。 A method for a shared reverse traffic channel to transmit reverse signaling implementations, including: A, the mobile station MS selects a reverse traffic channel has been established from a reverse traffic channel, transmitted by selection with the Reverse Traffic Channel reverse signaling user ID; B, with the user identification response message sent by the receiving base station controller.

MS发送所述带有用户标识的反向信令前,所述方法还包括: MS发送前导码使基站收发信台对MS进行捕获; 基站收发信台将所述前导码转发给基站控制器。 MS before transmitting the reverse signaling with the user identifier, the method further comprising: MS transmits the preamble to the base transceiver station that the MS is captured; base transceiver station forwards the preamble to the base station controller. 所述步骤A进一步包括: Said step A further comprises:

基站控制器接收到所述前导码后,发送应答消息给MS, MS接收到应答消息后发送所述带有用户标识的反向信令。 When the base station controller receives the preamble, transmits a response message to the MS, after receiving the response message with the MS transmits the reverse signaling user ID. 所述方法进一步包括: The method further comprising:

MS发送所述反向信令完毕,收到应答消息后,关闭在所述反向业务信道上的发射功率;或, MS transmitting the reverse signaling is completed, after receiving the response message, the closed transmit power of the reverse traffic channel; or,

MS多次发送反向信令后,仍未收到应答消息,则自动终止。 Repeatedly transmitting the reverse signaling after the MS, a response message is not received, it is automatically terminated.

所述MS发送反向信令的发射功率通过开环功控得到,初始功率根据前向信号的强度作开环估计,后续重发每次上升一预定的功率步长值。 The MS transmits the reverse signaling transmission power obtained by the open loop power control, open loop for the initial estimation of the forward power according to the intensity of the signal, incremented in a subsequent retransmission of the predetermined power step value.

由上述本发明提供的技术方案可以看出,本发明实现了CDMA集群系统能够共享反向信令信道,从而节省了系统资源,增加了系统容量。 Provided by the technical solution of the present invention can be seen, the present invention achieves the CDMA trunking system can share reverse signaling channel, thereby saving system resources, increases the system capacity.

附困说明 Description attached trapped

图1为本发明所述方法一种实施例操作流程图。 Figure 1 is a flowchart of operating an embodiment of the method of the invention. 具体实施方式 Detailed ways

本发明的核心思想是提供一种实现共享反向业务信道来传送反向信令的方法,可以^使同一扇区栽频下的用户共享一个或多个业务信道来传送反向信令,从而节省系统资源,增加系统容量。 The core idea of ​​the invention is to provide a method for a shared reverse traffic channel to transmit reverse signaling to achieve, so that the user can ^ planted in the same sector share one or more frequency channel to transmit the reverse traffic signaling, whereby conserve system resources, increase system capacity. 本发明提供一种实现共享反向业务信道来传送反向信令的方法,该方法 The present invention provides a method of sharing a reverse traffic channel to transmit reverse signaling, the method

可以应用到CDMA2000、 WCDMAiiLTD-SCDMA,本实施例以该方法应用于CDMA2000上为例进行说明,可以利用任何一种R-TCH来实现,包括:R-FCH (反向基本信道)、R-DCCH (反向专用控制信道)、R-SCH (方向补充信道)等,本实施例将这些反向业务信道统称为R-TCHs; F-TCH (前向业务信道)可以是任何一种物理信道,包括:F-FCH (前向基本信道)、F-DCCH (前向专用控制信道)、F-SCH (前向补充信道)等;本发明所述方法一种实施例操作流程如困l所示,具体包括如下步骤: Can be applied to CDMA2000, WCDMAiiLTD-SCDMA, the present embodiment of the method applied to CDMA2000 is described as an example, we may utilize any of a R-TCH achieved, including: R-FCH (Reverse Fundamental Channel), R-DCCH (reverse dedicated Control channel), R-SCH (direction supplemental channel), etc., the present embodiment these reverse traffic channel referred to as R-tCHs; F-TCH (forward traffic channel) may be any physical channel, comprising: F-FCH (forward fundamental channel), F-DCCH (forward dedicated Control channel), F-SCH (forward supplemental channel) and the like; the method of the present invention embodiments Example operation flow as shown trapped l , includes the following steps:

步骤l: MS在反向导频倌道R-PICH上向系统发送前导码Pre咖ble,来使BTS对MS进行捕获; Step l: MS groom in a reverse pilot channel transmitted on the R-PICH preamble Pre coffee ble to the system to enable the MS to the BTS capture;

BTS检测到MS的发射,可以开始对其发射信号进行解调; Detecting the emitted BTS the MS may begin transmitting its signal to demodulate;

步骤2: BTS捕获到MS发射的Pre咖ble后,通过反向业务帧Abis-IS2000 TCH Reverae向BSC转发; Step 2: Pre BTS captured coffee ble MS emitted forwarded to the BSC via a reverse traffic frame Abis-IS2000 TCH Reverae;

步骤3: BSC收到所述Preamble后,通过前向业务帧Abis-IS2000 TCH Forward向BTS发送应答; Step 3: After the BSC receives the Preamble, before sending a response to the service through the Abis-IS2000 TCH Forward the frame to the BTS;

步骤4: BTS收到所述应答后,通过F-TCH向MS发送应答消息BS Ack Order; Step 4: After receiving the response BTS sends a response message to the MS by the BS Ack Order F-TCH;

由于R-PICH上的Preamble不舍MS的标识IMSI ,因此该消息不带用户标 Since the MS identity IMSI Preamble dismay on R-PICH, so the message is not marked with a user

识; knowledge;

步骤5: MS收到所述应答消息后,开始在R-TCHs上发送反向信令,由于各MS共享反向业摊道,因此信令中需絲带MS的用户标识IMSI; Step 5: MS after receiving the response message, begins transmitting reverse signaling on R-TCHs, since each sector share MS shared reverse channel, and therefore need ribbon signaling the IMSI of the MS user identifier;

MS的发射功率通过开环功控得到,即初始功率根据前向信号的强度作开环估计,后续重发时,每次上升一定的功率步长值;为了满足大量MS共享反向业务倌道的需要,R-TCHs可以建立多条,MS每次发送信令时可以随机选择一条R-TCHs来发送;步-腺6: BTS4欠到所述4言令后,通过反向业务帧Abis-IS2000 TCH MS transmit power obtained by the open loop power control, i.e., the open loop estimate for the strength of the signal before the initial power according to, subsequent retransmission incremented in certain power step value; in order to satisfy a large number of MS shared reverse traffic channel groom needs, R-tCHs can establish multiple, the MS may be randomly selected each time an R-tCHs when transmitting signaling; step - adeno 6: BTS4 less so after the 4 words, reverse traffic frames Abis- IS2000 TCH

Reverse向BSC转发; Reverse forwarded to the BSC;

步骤7: BSC收到所述信令后,通过前向业务帧Abis-IS2000 TCH Forward向BTS发送应答; Step 7: after receiving the signaling BSC, before sending a response to the BTS through the traffic frame Abis-IS2000 TCH Forward;

步骤8: BTS收到所述应答后,通过F-TCH向MS发送应答消息BS Ack Order,该消息中同样携带用户的标识IMSI; Step 8: After receiving the response BTS sent through F-TCH to the MS a response message BS Ack Order, the same message carries the IMSI identity of the user;

步骤9: MS收到应答后,关闭在R-TCHs上的发射功率,以便给其它MS 或本身下次使用。 Step 9: After the MS receives the reply, off transmit power on the R-TCHs, in order to use itself or next to other MS.

上述搡作过程中,MS是在接收到应答消息后才发送反向信令,也可以采用如下方法:当MS发送Preamble—段时间后,无论是否收到应答都开始发送反向信令;如果一定时间内没有收到应答消息BS Ack Order时,则认为发送失败,为了避免多个MS同时抢占R-TCHs, MS需要随机延时一段时间再重发,多次重发失败,则停止发送。 Process for shoving, MS is transmitting reverse signaling reply message after receiving the above, a method may be employed: When the MS sends Preamble- period of time, whether or not received the response began to transmit reverse signaling; if when there is no response within a BS Ack order message a predetermined time, the transmission failure that, in order to avoid multiple simultaneous preemption MS R-tCHs, MS random delay period of time to need retransmission times retransmission fails, transmission is stopped.

综上所述,本发明实现了CDMA集群系统能够共享反向业务信道,从而节省了系统资源,增加了系统容量。 In summary, the present invention achieves a CDMA trunking system can share the reverse traffic channel, thereby saving system resources, increases the system capacity.

以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内。 Above, the present invention is merely preferred specific embodiments, but the scope of the present invention is not limited thereto, any skilled in the art in the art within the scope of the invention disclosed can be easily thought of the changes or Alternatively, it shall fall within the protection scope of the present invention. 因此,本发明的保护范围应该以权利要求的保护范围为准。 Accordingly, the scope of the present invention should be defined by the scope of the claims.

Claims (5)

1、一种实现共享反向业务信道来传送反向信令的方法,其特征在于,包括: A、移动台MS从已经建立的反向业务信道中选择一条反向业务信道,通过选择的反向业务信道发送带有用户标识的反向信令; B、接收基站控制器发送的带有所述用户标识的应答消息。 1. A method for the shared reverse traffic channel to transmit reverse signaling implemented, characterized by comprising: A, the mobile station MS selects a reverse traffic channel has been established from a reverse traffic channel, by selecting the counter transmitting reverse signaling with the user identifier to the traffic channel; B, receiving a response message sent by the base station controller with said user identification.
2、 如权利要求l所迷的一种实现共享反向业务信道来传送反向信令的方法,其特征在于,MS发送所述带有用户标识的反向信令前,所述方法还包括:MS发送前导码使基站收发信台对MS进行捕获; 基站收发信台将所迷前导码转发给基站控制器。 2. The fan as claimed in claim l way to share the reverse traffic channel to transmit reverse signaling to achieve, wherein, before the MS transmits the reverse signaling with user identification, said method further comprising : MS transmits a preamble to a base transceiver station that the MS is captured; base transceiver station forwards the fans preamble to the base station controller.
3、 如权利要求2所述的一种实现共享反向业务信道来传送反向信令的方法,其特征在于,所述步骤A进一步包括:基站控制器接收到所述前导码后,发送应答消息给MS, MS接收到应答消息后发送所迷带有用户标识的反向信令。 3. The one-implemented method of claim 2 shared reverse traffic channel to transmit reverse signaling, wherein said step A further comprising: a base station controller after receiving the preamble, transmits a response message to the MS, MS receives the response message and transmits the reverse signaling with user identification fans.
4、 如权利要求l所述的一种实现共享反向业务信道来传送反向信令的方法,其特征在于,所述方法进一步包括:MS发送所述反向信令完毕,收到应答消息后,关闭在所述反向业务信道上的发射功率;或,MS多次发送反向信令后,仍未收到应答消息,则自动终止。 4. A method according to l shared reverse traffic channel to transmit reverse signaling claim, wherein said method further comprises: MS finished transmitting said reverse signaling, receiving the response message after closing the transmit power of the reverse traffic channel; or, after the MS transmits the reverse signaling times, you do not receive a response message is automatically terminated.
5、 如权利要求l所述的一种实现共享反向业务信道来传送反向信令的方法,其特征在于,所述MS发送反向信令的发射功率通过开环功控得到,初始功率根据前向信号的强度作开环估计,后续重发每次上升一预定的功率步长值。 5. The one-implemented method of claim l shared reverse traffic channel to transmit reverse signaling of the initial power requirements, characterized in that, the MS transmits the reverse signaling transmission power obtained by the open loop power control, the strength of a forward signal for open loop estimate, incremented in a subsequent retransmission of the predetermined power step value.
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