CN100555910C - Method for defining available signal by terminal under direct connection mode and communication method - Google Patents

Method for defining available signal by terminal under direct connection mode and communication method Download PDF

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CN100555910C
CN100555910C CN 200510080641 CN200510080641A CN100555910C CN 100555910 C CN100555910 C CN 100555910C CN 200510080641 CN200510080641 CN 200510080641 CN 200510080641 A CN200510080641 A CN 200510080641A CN 100555910 C CN100555910 C CN 100555910C
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terminal
available
repeater
calling terminal
step
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CN 200510080641
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Chinese (zh)
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CN1893312A (en
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马继鹏
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联芯科技有限公司;大唐移动通信设备有限公司;上海大唐移动通信设备有限公司
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Abstract

本发明提供一种直通模式下终端确定可用信号的方法,预先建立转发器使用的码字的专用码表,并将所述转发器的工作频点和所述专用码表分别存储在终端中;然后在所述转发器的工作频点接收信号;并根据所述接收的信号中解析出的码字与所述专用码表中的码字对比,判断当前是否存在转发器;当存在转发器时,解析所述转发器发出的消息,并根据解析后的消息,确定可用转发器。 The present invention provides a method for determining a terminal availability signal in a through mode, a dedicated pre-established code table codeword repeater in use and the operating frequency of the repeater and the specific code table are stored in the terminal; then operation of the transponder in frequency a received signal; and Comparative codewords according to the specific code table in the received signal is parsed, it is determined whether there is currently a transponder; when present transponder parse the message sent by the transponder, and in accordance with the parsed message, determining available transponders. 本发明能够快速搜索到当前系统中可用的转发器或者主叫终端,进一步向所述转发器或主叫终端进行同步。 The present invention can quickly search the current repeater system available or the calling terminal is further synchronized to the repeater or the calling terminal.

Description

直通模式下终端确定可用信号的方法及其通信的方法 The method of determining the available signal terminal direct mode communication method and

技术领域 FIELD

本发明涉及TD-SCDMA在专用网络中的应用技术,尤其涉及TD-SCDMA在直通模式下终端保持同步的方法,特别是同步过程中终端确定可用信号的方法。 The present invention relates to TD-SCDMA technology in the private network, particularly to a method of synchronizing a TD-SCDMA terminal remains in a direct mode, in particular, the terminal determines synchronization signal available methods. 背景技术 Background technique

专网系统对可靠性要求较高,但专网系统往往规模较小,无法实现全国范围内的连续覆盖,如果终端进入到网络覆盖不到的区域,或者当前网络由于故障而不能提供通信服务,则可以使终端通过直通模式进行通信。 Private network systems requiring high reliability, but private network systems tend to be small-scale, continuous coverage can not be achieved in the country, if not terminal into the network coverage area, or the current network is not due to a failure to provide communication services, it is possible to communicate via the terminal through mode. 直通模式指的是终端之间不通过网络设备进行信号中转,终端间直接进行通信或通过转发器进行通信的模式。 Through mode refers to not transfer a signal between a terminal equipment via a network, or inter-terminal direct communication mode for communication through the repeater.

专用网络中的直通模式下的终端通信。 Communication terminal in a private network through mode.

TD-SCDMA中,基本的直通模式为一个主叫终端发射信号,其余所有被叫终端向主叫终端同步,并接收主叫终端发出的信号。 TD-SCDMA, the basic mode of transmitting signals through a calling terminal, the called terminal is synchronized to all other calling terminal and the calling terminal sends the reception signal. 为了提高直通模式下的通信距离,在某些情况下在通信区域中央放置转发器设备。 In order to increase the communication distance in the direct mode, in some cases the repeater device is placed in the communication area in the center. 在使用转发器的情况下,所有终端均向转发器进行同步,并与转发器进行信号的收发。 In the case where the repeater, all terminals are synchronized to the repeater, and transmits and receives a signal repeater. 转发器接收一个主叫终端发出的业务数据和信令,并将数据和信令转发给所有被叫终端;同时转发器也会接收被叫终端发出的信令,并将其转发给主叫终端。 Repeater receives a calling terminal sends traffic data and signaling, and forwards all data and signaling to the called terminal; the same repeater would receive the signaling sent by the called terminal, and forward it to the calling terminal .

由上文所述,直通模式下,当终端之间直接进行通信,则被叫终端必须与主叫终端进行同步,当主叫终端与被叫终端通过转发器进行通信,则被叫终端必须与转发器保持同步,因此,实现同步进行通信需要解决如何确定当前系统中处于通信的主叫终端或者转发器的问题。 By the described above, passthrough mode, when the direct communication between the terminal, the called terminal must be synchronized with the calling terminal when the calling terminal and the called terminal via the transponder communication, the called terminal must be repeater synchronized, therefore, communicate synchronization problems should be solved to determine the current system is in communication with the calling terminal or the repeater.

发明内容本发明要解决的技术问题在于:提供一种直通模式下终端确定可用信号及 SUMMARY OF THE INVENTION The technical problem to be solved in that: the terminal is determined to provide a usable signal pass-through mode and

其通信的方法,能够快速搜索到当前系统中可用的转发器或者主叫终端,进一步向所述转发器或主叫终端进行同步。 The method of the communication, it is possible to quickly search currently available in the system or repeater calling terminal is further synchronized to the repeater or the calling terminal.

为解决上述技术问题,本发明提供一种直通模式下终端确定可用信号的 To solve the above problems, the present invention provides a terminal determination signal in a through available mode

方法,包括步骤: A method, comprising the steps of:

1) 建立转发器^f吏用的码字的专用码表,并将所述转发器的工作频点和所述专用码表分别存储在终端中; 1) to establish specific transponder code table ^ f codeword with officials, and the working frequency of the repeater and the specific code table are stored in the terminal;

2) 在所述转发器的工作频点接收信号; 2) receiving a signal at the working frequency repeater;

3) 根据所述接收的信号中解析出的码字与所述专用码表中的码字对比, 判断当前是否存在转发器; 3) According to Comparative codewords parsed the received signal with the specific code table, it is determined whether there is currently a transponder;

4) 当存在转发器时,解析所述转发器发出的消息,并根据解析后的消息, 确定可用转发器。 4) When there is a repeater, the repeater parses the message is sent, and in accordance with the parsed message, determining available transponders.

其中,当前频点不存在可用转发器时,还包括:根据步骤l)存储的转发器的工作频点的下一个频点执行步骤2)和步骤3 )。 Wherein there is no current available frequency transponder, further comprising: performing 2) and according to the following Steps a frequency working frequency repeaters step l) stored in 3).

其中,所述码字包括:下行导频码、上行导频码、扰码以及基本中间码, 所述下行导频码、上行导频码、扰码以及基本中间码属于同一码组。 Wherein said code word comprises: a downlink pilot symbol, an uplink pilot code, scrambling code and basic midamble codes, the downlink pilot code, the uplink pilot code, scrambling code and basic midamble codes belonging to the same group.

本发明还公开一种直通模式下终端确定可用信号的方法,包括步骤: The present invention also discloses a method for determining a terminal availability signal is a direct mode, comprising the steps of:

41) 建立各主叫终端使用的码字的专用码表,并将所述专用码表以及所述主叫终端使用的工作频点存储在终端中; 41) establishing a dedicated codewords of each code table used by the calling terminal, and the specific code table, and using the calling terminal working frequency stored in the terminal;

42) 在所述主叫终端的工作频点接收信号; 42) in the calling terminal receiving a working frequency signal;

43) 根据接收的信号中解析出的码字与所述专用码表中的码字对比,判断当前是否存在主叫终端; 43) The comparison of codewords of the specific code table in the received signal is parsed, it is determined whether there is currently calling terminal;

44) 若存在主叫终端,则解析所述主叫终端发出的消息,并根据所述消息确定可用的主叫终端。 44) If the calling terminal exists, parsing the message sent by the calling terminal, the calling terminal and determine available according to the message.

其中,所述步骤41)还包括:建立转发器使用的码字的专用码表,并将 Wherein the step 41) further comprising: establishing a dedicated code table using a codeword repeater, and

6所述转发器的工作频点和所述转发器使用的码字的专用码表分别存储在终 6 the working frequency of the repeater and the repeater codeword using specific code table are stored in the final

端中; Ends;

所述步骤42)之前还包括:按照下述步骤确定是否存在可用转发器: The step 42) until further comprising: according to the following steps to determine if there is an available repeater:

A) 在所述转发器的工作频点接收信号; A) receiving a signal at the working frequency repeater;

B) 根据在所述转发器的工作频点接收的信号中解析出的码字与所述转发器使用的码字的专用码表中的码字对比,判断当前是否存在转发器; B) The specific codeword comparison of codewords code table in the analyzed signal the transponder working frequency received codeword used by the repeater, it is determined whether there is currently a transponder;

当不存在可用转发器时,执行步骤42)至步骤44); 当存在可用转发器时,不执行步骤42)至步骤44)。 When there is no repeater is available, step 42) to step 44); if there are available repeater does not perform step 42) to step 44). 其中,所述步骤41)之前还包括: Wherein, prior to the step 41) further comprises:

将码字分类,其中一类码字用于标识与转发器的对应关系,另一类码字用于标识与主叫终端的对应关系。 The classification code word, where the corresponding relationship between a class code word used to identify the repeater, and the other codeword for the corresponding relationship between the identifier of the calling terminal.

其中,分类后的码字还包括用于备用的保留类码。 Wherein the code word further comprises a classification reserved for alternate class code.

其中,若当前频点不存在可用主叫终端,则才艮据步骤41)存储的主叫终端的工作频点的下一个工作频点执行步骤42)和步骤43 )。 Wherein, if the current frequency point is available the calling terminal does not exist, according to step 41 before Gen) for working a working frequency point calling terminal stored frequency step 42) and step 43).

另外,所述步骤还包括:若当前频点不存在可用主叫终端,则当人工干预时,执行步骤A)至步骤B)。 Further, the steps further comprise: if the current frequency point is available the calling terminal does not exist, when manual intervention, step A) to step B).

另外,当不存在可用转发器时,在执行步骤42)之前还包括步骤:设置解析周期,当到达所述解析周期时,再执行步骤42 )和43 )。 Further, when there is no available transponders, before performing step 42) further comprises the step of: parsing setting period, when reaching the analysis period, and then perform step 42) and 43).

其中,所述周期为160ms或320ms。 Wherein the period is 160ms or 320ms.

本发明还公开一种直通终端进行通信的方法,包括 The present invention also discloses a method of communicating through a terminal, comprising

121 )根据上述提供的一种直通模式下终端确定可用信号的方法的步骤确 121) may signal the steps of the method according to the determined terminal determines a through mode provided above

定可用转发器; Given the available transponders;

122) 与该可用转发器进^f亍同步,并解析转发器发出的信息; 122) into the repeater available synchronization ^ f right foot, and analysis information sent by the transponder;

123) 根据所述信息通过所述可用转发器进行通信。 123) to communicate according to the information available through the repeater.

进一步,还包括步骤:设置解析周期,当到达所述解析周期时,解析所 Further, further comprising the step of: parsing setting period, when reaching the analysis period, parses

7述转发器发出的信息。 7 said information transfer emitted.

本发明还公开一种直通终端进行通信的方法,包括: 141 );故叫终端确定可用主叫终端; The present invention also discloses a method of terminal through communication, comprising: 141); it can be used to determine the calling terminal to the calling terminal;

142)所述^^皮叫终端与该可用主叫终端进行同步,并解析主叫终端发出的信息; 142) of the calling terminal to the skin ^^ calling terminal available for synchronization, and analysis information sent by the calling terminal;

143 )所述被叫终端根据所述信息与所述主叫终端进行通信。 143) the called communication terminal according to the information of the calling terminal. 进一步,所述步骤还包括: Further, said step further comprises:

解析所述主叫终端发出的信息,当判断所述主叫终端改变为另一个终端时,调整接收机的定时器,向新的主叫终端保持同步。 Parsing the information sent by the calling terminal, when determining that the calling terminal is changed to another terminal, the receiver timer is adjusted to the new calling terminal remains synchronized.

与现有技术相比,本发明的有益效果是:当终端通过转发器进行通信时, 本发明提供的确定可用转发器的方法预先建立转发器与码字的专用码表,并将所述专用码表分别存储在终端中,通过预先存储的专用码表,被叫终端能够快速确定当前可用的转发器,进而与之保持同步,进行通信。 Compared with the prior art, the beneficial effects of the present invention is that: when a terminal communicating through a repeater, the present invention provides a method of determining the available dedicated repeater pre-established code table and a codeword repeater, and the specific code table stored in the terminal, respectively, through dedicated code table stored in advance, the called terminal can quickly determine currently available transponders, and thus synchronizes to communicate.

本发明提供的确定可用主叫终端的方法,在终端之间直接进行通信时, 预先建立所述主叫终端与码字的专用码表,并预先存储在终端中,通过预先存储的专用码表确定可用的主叫终端,进而与之保持同步,进行通信; The method of determining the available calling terminal provided by the present invention, when the direct communication between the terminals, the dedicated code table pre-established by the calling terminal and a codeword, and previously stored in the terminal, the dedicated code table stored in advance determining available calling terminal, and then synchronizes to communicate;

若当前网络存在转发器,本发明首先确定是否存在可用的转发器,不存在可用转发器时,再确定可用的主叫终端,进一步,本发明预先将码字分类, 限制转发器和主叫终端使用的码字,从而降低搜索的复杂度,同时提高搜索的可靠性,进一步缩短搜索时间。 If the current network with repeaters, the present invention first determines whether there are available repeater when the repeater is available, and then determine the available calling terminal does not exist, and further, the present invention is classified in advance codeword, and limits the calling terminal repeater codeword used, thereby reducing the complexity of the search, while improving the reliability of the search, the search time is further shortened.

另外,本发明还预留了保留类码,方便将来业务扩展使用。 Further, the present invention also reserved reserved class code, easy to service future expansion.

另外,本发明设置解析可用转发器或主叫终端的周期'达到使终端省电的目的。 Further, the present invention can be used provided parsing of the calling terminal or repeater cycle 'reaches the terminal so that power saving purposes.

进一步,本发明在通信过程中周期判断发生呼叫权转移,从而使确定当前可用的主叫终端或转发器更加可靠有效。 Further, the present invention is determined during the communication cycle occurring Call Transfer, thereby determining the currently available calling terminal or the repeater is more reliable and effective. 另夕卜,本发明中的码字采用原有TD-SCDMA中使用的下行导频码、上 Another Bu Xi, the codeword used in the invention in the existing TD-SCDMA downlink pilot frequency used in the code, the

行导频码、扰码以及基本中间码,简化设计难度。 OK pilot code, scrambling code and basic midamble, simplify the design difficulty. 附图说明 BRIEF DESCRIPTION

图1是本发明所述的直通模式下终端确定可用转发器的流程图; 1 is a flowchart available for a direct mode repeater according to the present invention, a terminal is determined;

图2是本发明所述的直通模式下终端确定可用主叫终端的流程图; FIG 2 is a direct mode terminal determines the present invention may be of a flowchart of the calling terminal;

图3是第一实施例的流程图。 FIG 3 is a flowchart of a first embodiment. 具体实施方式 Detailed ways

目前TD-SCDMA技术主要应用在公共移动通信网之中,所有终端必须通过基站进行通信,终端若要与其他终端进4于通信,必须把业务lfc据和信令发送给网络,同时接收来自网络的业务数据和信令。 The current TD-SCDMA technology is mainly used in public mobile communications network, all the terminals must communicate via a base station, to the terminal 4 into the communication with other terminals, must send traffic data and signaling to the network lfc, while receiving from the network the traffic data and signaling. 本发明的申请人设计了一套将TD-SCDMA技术用于专网(比如各地公安机关使用的集群通信系统)的方案。 The present applicants have designed a set of the TD-SCDMA technology used in private networks (such as the public security organs used trunking communication system) scheme. 专网系统对可靠性要求比较高,但专网系统往往M^t^支小,无法实现全国范围内的连续覆盖。 Special networks of relatively high reliability, but the private network systems often M ^ t ^ branched small to achieve continuous coverage within the country. 如果终端i^到网络覆盖不到的区域,或者当前网络由于故障而不能提供通信服务,就可以让终端进入直通模式。 I ^ If the terminal to the network not covered area, or due to a fault current network does not provide a communication service, so that the terminal can enter the through mode. 这时终端不再与网络设备进行信号的收发,而是终端设备之间直接进行通信。 In this case the terminal will not transmit and receive signals with the network device, but direct communication between the terminal apparatus. 其基本的通信模式为一个主叫终端发射信号,其余所有被叫终端向主叫终端同步,并接收主叫终端发出的信号。 The basic communication mode of transmitting a signal to the calling terminal, the called terminal is synchronized to all other calling terminal and the calling terminal sends the reception signal. 为了提高直通模式下的通信距离,有时也会在通信区域中央放置一个转发器。 In order to increase the communication distance in the direct mode, sometimes placing a transponder in a communication area center. 在使用转发器的情况下,所有终端都向转发器进行同步,并通过转发器进行信号的牝义。 In the case where the repeater, all terminals be synchronized to the repeater, and female sense signal through the repeater. 终端i^v直通模式后必须与主叫终端或转发器进行同步, 因为同步是通信的基本要素,接收机只有完成与发射机的同步才能正确获取发射机发出的信息,即被叫终端与主叫终端或转发器进行同步后,才能正确接收业务数据和信令。 After the terminal i ^ v passthrough mode must be synchronized with the calling terminal or the repeater, because synchronous communication is the basic element, the receiver has completed correctly synchronized to the transmitter, the transmitter acquires information sent, i.e., the called terminal and the main after the called terminal or transponders to synchronize, in order to receive traffic data and signaling correctly. 由于终端进入直通模式后不知道当前系统中是否使用转发器,因此应当首先尝试搜索可用的转发器,如果找不到任何转发器或者找到的所有转发器的身份标识都不符合终端自身存储的可用转发器身份标识,则终端i^为当前不存在转发器,即可进入不断搜索主叫终端的状态。 Not knowing whether the current system using the transponder after entering the terminal pass-through mode, and therefore should first try to search for available transponders, identity If no transponder or find all of the transponders are not in line with the available storage terminal itself transponder identity, the terminal i ^ is the state does not currently exist transponder, you can enter the continuous search for the calling terminal.

本发明正是针对该问题提出的。 The present invention is proposed to solve this problem. 本发明的核心思想是预先在各终端和/或 The core idea of ​​the invention is to advance in each terminal and / or

转发器中存储用来设定各转发器以及各终端之间对应关系的码字,当终端进入 Repeater stores a codeword for setting the correspondence between each repeater and each terminal, when the terminal enters

直通模式时根据预先存储的码字确定建立通信的转发器或主叫终端。 When the mode is determined to be established through the calling terminal or communications repeater according codeword stored in advance.

本发明提供了两种确定可用信号的方法,所谓可用信号是指可用转发器发 The present invention provides two methods available to determine signal, called signal means available transponders available hair

给所述终端的信号,或者是一个主叫终端准备或正在向所述终端发送呼叫信息 Signal to the terminal or a calling terminal is ready to transmit a call or message to the terminal

的信号。 signal of.

本发明首先提供了如何确定可用转发器的方法,可用转发器即当前被叫 The present invention provides a method of how to determine the first available transponders, i.e., transponders available currently called

终端与主叫终端建立通信时使用的转发器。 Terminal and the calling terminal to establish a communication using the repeater. 如图1所示,具体的方法是:建立转发器使用的码字的专用码表,并将所述转发器的工作频点和所述专用码表分别存储在终端中(Sl);在所述转发器的工作频点尝试接收所述转发器发出的信号(S2);将所述信号中的解析出的码字与所述专用码表中的码字进行比较,判断当前是否存在转发器(S3);当解析出的码字与专用码表中的码字一致时,认为存在转发器。 1, the specific method is: establishing dedicated code codeword table used in the repeater, and working frequency of the repeater and the specific code table are stored in the terminal (Sl is); in the the working frequency of said transponder try signal (S2) emitted from said repeater receiver; the codewords in the signal is parsed and the specific code table, and determines whether there is currently repeater (S3); when the same code word with code words parsed specific code table, that the presence of the transponder. 由于与转发器对应的码字可能存在一组码字对应多个转发器的情况,因此需要确定当前的转发器是否为可用的转发器,方法是进一步解析该转发器发出的信息(S4),解析后信息中包括转发器ID,同时,终端自身存储有可用转发器的列表,根据转发器ID能够判断出是否为可用的转发器。 Since the repeater corresponding to the codeword set of circumstances there may be a plurality of codewords corresponding to the transponders, it is necessary to determine whether the current transponder available repeater is further resolved the repeater information sent (S4), after the analysis information ID included in the transponder, while the terminal itself stores a list of available transponders, transponder ID can be determined according to whether the repeater is available.

本发明还提供了如何确定可用主叫终端的方法,在直通模式下,如果终端之间直接进行通信,而未通过转发器,则需要确定当前可用的主叫终端; 终端在不知道当前是否存在转发器的情况下,应当首先尝试搜索可用转发器。 The present invention also provides a method how to determine the available calling terminal, in direct mode, if a direct communication between terminals, and not through the repeater, it is necessary to determine the currently available calling terminal; terminal does not know whether there is currently the case of the transponder, you should first try to search for available transponders. 若未搜索到可用转发器,则所述终端认为当前不存在可用转发器,即可进入不断搜索主叫终端的状态。 If no available repeater search, the terminal that currently there is no available transponders, the calling terminal to enter the search state continually. 以下就两种情况详细进行阐述。 The following detailed elaborate on the two cases.

图2为不存在转发器时确定可用主叫终端的流程图。 FIG 2 is a flowchart of the absence of the transponder determines the calling terminal available. 当直通模式下不存在转发器时,预先建立主叫终端使用的码字的专用码表,并将所迷专用码表 When there is no direct mode repeater, a dedicated pre-established code table codewords used by the calling terminal, and the specific code table fans

10以及所述主叫终端使用的频点信息存储在各终端中(SI);根据所述工作频点接收主叫终端发出的信号(S2);解析所述主叫终端发出的信号,并根据解析出的码字以及所述专用码表中的码字判断当前是否存主叫终端(S3);若存在主叫终端,则解析所述主叫终端发出的信息,并根据所述信息中包含的被叫终端标识判断所述主终端是否正在试图与自己建立呼叫(S4 )。 Receiving a calling signal frequency emitted from the operation terminal (S2);; 10 and frequency information stored in the calling terminal for use in each terminal (SI) parsing of the calling signal sent from the terminal, and in accordance with parsing the code word and the code word of the specific code table is determined whether there is currently calling terminal (S3); if the calling terminal exists, parsing the information sent by the calling terminal, and said information comprising the identification of the called terminal determines whether the main terminal is trying to establish a call (S4) with their own.

当直通模式下存在转发器时,终端在开机时首先确定当前是否存在可用的转发器,具体的方法与上文所述的确定可用转发器的方法相同,当不存在可用转发器时,则确定当前是否存在可用的主叫终端,方法与上文不存在转发器时确定可用主叫终端的方法一致,不同之处在于,在这种情况下还需要预先建立转发器使用的码字的专用码表,并将所述转发器的工作频点和所述专用码预先存储在终端中。 When there is a direct mode repeater, when the terminal first determines whether there is currently power available transponders, particular a method same as the method of determining available repeater described above, when there is no repeater is available, it is determined whether there is currently available calling terminal, and a method of determining a consistent method available in the absence of the calling terminal repeater above, except that, in this case also need to create a codeword repeater specific code previously used table, and the working frequency of the repeater and the specific code stored in the terminal in advance.

另外,作为本发明的进一步改进,当存在转发器时,本发明将码字分类, 其中一类码字用于标识与转发器的对应关系,另一类码字用于标识与主叫终端的对应关系,另外其余的码字作为将来备用的保留类码,将码字分类,预先限制转发器和主叫终端使用的码字的目的是降低搜索的复杂度,提高搜索的可靠性,即不会因为误搜索到当前没有使用的码而导致搜索时间延长。 Further, as a further development of the invention, when the transponder is present, the present invention is classified codeword, wherein the corresponding relationship between a class code word used to identify the repeater, and the other codeword for identifying the calling terminal correspondence relation, the rest of the additional code word reserved for future use as a class code, the code word tree, previously the purpose of limiting the codeword repeater and the calling terminal is used to reduce the complexity of the search, the search is to improve the reliability, i.e. not because of the error code to search not currently in use and lead to prolonged search.

进一步,当可用信号为可用转发器时,本发明还提供了直通终端利用确定的可用信号进行通信的方法,首先利用上述方法确定可用转发器;保持与该转发器的同步;并解析转发器发出的信息,判断是否存在以本终端作为呼叫对象的呼叫,由于该信息中包括i皮叫终端的标识,因此当判断该标识与自身的标识一致时加入当前呼叫。 Further, when the available signal is available transponders, the present invention also provides the signals available through the terminal using the determined method of communication, first determine the available transponders by the above method; synchronization holding the transponder; and parsing the transponder emits information, determines whether there is a call for the terminal call object, since the information included in the skin called terminal identifier i, and therefore the current call is added when determining the identification consistent with its own identity. 为了节省用电量,可以设置信号接收周期, 当到达所述信号接收周期时,再接收信号并进行解析。 To save power consumption, it can be provided a signal reception cycle, when the signal reaches the reception cycle, and then receives and analyzes the signal. 这是因为如果搜索到转发器,意味着当前通信是通过转发器进行的,由于转发器是始终保持信号发送的,所以终端与转发器同步后,所有与该终端相关的呼叫均通过该转发器进行。 This is because if the search to the transponder, meaning that the current communication is carried out through a repeater, due to the transponder signal is always sent, so the terminal and repeater synchronization, all associated with the end of the call by both the transponder get on. 如果终端没有处于呼叫状态,则会解析该转发器发出的信息,判断是否有一个呼叫以及该呼叫,同时,由于主叫终端可以对应多个终端组,当被叫属于该组时才允许加入呼叫,被叫终端若想加入通信,需要先判断当前主叫终端是否在呼叫自己。 If the terminal is not in a call, the repeater information will resolve the issue, and determines whether the call is a call, and since the calling terminal may correspond to a plurality of terminal groups, belonging to the group called only when permitted to join the call called terminal to join the communication, the calling terminal needs to determine whether the current call is in themselves.

当可用信号为主叫终端时,本发明同样也提供了相应的直通终端利用确定的可用信号进行通信的方法,首先利用上述方法确定可用主叫终端;同样,由于与主叫终端对应的码字可能存在一组码字对应多个主叫终端的情况,因此需要确定当前的主叫终端是否为可用的主叫终端,方法是解析所迷主叫终端发出的信息,并根据所述信息中的被叫用户标识确定可用的主叫终端。 When the calling terminal available signal, the present invention also provides a method of using available corresponding terminal through the communication signal is determined, first, by the above method can be used to determine the calling terminal; Also, since the codeword corresponding to the calling terminal where there is a set of a plurality of codewords corresponding to the calling terminal may be, it is necessary to determine whether the calling terminal is currently available to the calling terminal, the calling information is sent from the terminal parses the fan, and based on the information in the called user ID to determine the available calling terminal. 在这种情况下,终端不通过转发器直接与主叫终端通信,与转发器相区别,主叫终端只有在需要通信时才会发出信号,因此被叫终端与主叫终端同步并加入了一个呼叫后,该被叫终端会持续解析主叫终端发出的全部信令。 In this case, the terminal does not directly communicate with the calling terminal, the repeater distinguished by the repeater, the calling terminal will only need to communicate signals when, so called terminal and the calling terminal and adding a synchronization after the call, the called terminal will continue to resolve all signaling sent by the calling terminal.

由于主叫终端的身份可能发生转移,即主叫终端身份从某个终端变为另外一个终端,因此在没有使用转发器进行直通的情况下,所有被叫终端都可从原主叫终端获得主叫身份转移的信息。 Since the identity of the calling terminal is likely to metastasize, i.e. the identity of the calling terminal from another terminal becomes a terminal, and therefore not carried out through the use of a transponder, all the called terminal can be obtained from the original calling terminal primary call identity information transfer. 新的主叫终端会保持帧号的连续性。 The new calling terminal will maintain the continuity of the frame number. 帧号是用于标记无线帧的,主叫终端每发送一个无线帧的信号,无线帧号就会自动加1。 Is used to mark the frame number of the radio frame, the calling terminal sends a signal to each radio frame, the radio frame number is automatically incremented by one. 无线帧号可以用于更高层面的同步。 Radio frame number used for synchronization of the higher level. 比如可以约定在特定的无线帧号对应的无线帧发送特定的信息。 You may agree to such specific information transmitted in the radio frame a particular frame number corresponding to the radio. 保持帧号的连续性可以使得各从终端不必重新获取新的主叫终端发送信号的帧号。 Maintaining the continuity of the frame number may be such that each of the terminal does not have to reacquire new calling terminal sends the frame number signal.

上述情况下,讲话权发生转移后,所有的被叫终端包括原主叫终端^向新的主叫终端重新同步。 Under the above circumstances, after the shift occurs speaking, all of the original calling terminal, the called terminal comprises ^ resynchronization to the new calling terminal. 因为原来的所有被叫终端都是向原主叫终端同步的, 由于新的主叫终端与原主叫终端可能在地理位置上存在一定距离,新主叫终端发出的信号到达某个从终端所花费的时间(即电磁波传递时间)与原主叫终端发出的信号到达该从终端所花费的时间可能会不同,因此被叫终端必须调整本 Since all the original calling terminal the called terminal are synchronized with the original due to the new calling terminal and the original calling terminal there may be a certain distance from the geographical calling terminal sends a new signal arrives at the terminal from a spent time signal (i.e., electromagnetic wave transmission time) of the original calling terminal sends the arrival time of the terminal takes may differ from, the called terminal must be adjusted so the present

12同步。 12 synchronization. 为了保持与新的主叫终端继续同步,需要被叫终端调整接收机的定时器,向新的主叫终端保持同步。 In order to continue to maintain synchronization with the new calling terminal, the called terminal needs to adjust the timer of the receiver to synchronize the new calling terminal. 而如果当前通信是通过转发器进行的,由于所有终端均与转发器同步,因此当主叫终端身份转移时,各终端仍然与转发器保持同步,不必调整接收机的定时器。 And if the current communication is via a repeater, since all terminals are synchronized with the transponder, so when the identity of the calling terminal transfer, each terminal remains synchronized with the transponder, the receiver does not have to adjust the timer.

若终端开机后在所有的直通频点上既搜索不到可用转发器又搜索不到可用的主叫终端,则终端将不断尝试搜索主叫终端。 If the terminal is powered either straight-through searches on all frequencies less than the available transponder and search is not available calling terminal, the terminal will continue to try to search for the calling terminal. 不必进行转发器的搜索是由于转发器是持续发送信号,如果搜索不到当前可用的转发器,则说明当前环境不存在可用转发器。 Do not have to search the transponder is due to send a signal repeater is a continuous, if the search is not currently available transponders, then the current environment there is no available transponders. 同样为了省电,可以设定固定的搜索周期。 Also to conserve power, you may be set a fixed search period.

当不存在可用转发器或主叫终端时,还可以由用户主动触发搜索转发器的过程。 When the calling terminal or repeater available absence, but also may be actively triggered by the user of the repeater search process.

为了简化涉及,本发明使用现有TD - CDMA中的下行导频码(SYNC—DL)、上行导频码(SYNC—UL)、扰码(scrambling)以及基本中置码(basic midamble)建立与转发器以及各终端的对应关系。 To simplify relates to the present invention using existing TD - CDMA downlink pilot in pilot code (SYNC-DL), uplink pilot symbols (SYNC-UL), scrambling code (Scrambling) and basic midamble (basic midamble) Establishment and repeater and the correspondence between each terminal. 这些码的长度、 在帧中的位置、产生方式等与基于TD-SCDMA技术的公共移动通信网相同, 以下以第一实施例为例,详细说明在存在转发器的情况下确定可用转发器及可用主叫终端的实现过程。 The length of these codes, the position in the frame, and the other way to generate a public mobile communication network based on TD-SCDMA technology is the same, the following first embodiment to an example embodiment, detailed description is available is determined in the presence of the transponder and the transponder available calling terminal implementation.

第一实施例:在本实施例中,直通模式下主叫终端和转发器发射信号涉及的码包括但不限于:下行导频码(SYNC—DL )、上行导频码(SYNC—UL )、扰码(Scrambling )、基本中置码(Basic midamble )。 First embodiment: embodiment, the direct mode calling terminal and the transponder code signal transmitted according to the present embodiment include, but are not limited to: a downlink pilot codes (SYNC-DL), uplink pilot symbols (SYNC-UL), scrambling code (scrambling), basic midamble (basic midamble). 这些码的长度、在帧中的位置、产生方式等与基于TD-SCDMA技术的公共移动通信网相同,SYNC—DL 共32个,位于下行导频时隙中;SYNC—UL共128个,位于上行导频时隙中; Basic midamble共128个,可生成Midamble码作为常规时隙的训练序列。 The length of these codes, the position in the frame, and the other way to generate a public mobile communication network based on TD-SCDMA technology is the same, SYNC-DL total of 32, is located in the downlink pilot time slot; SYNC-UL 128 were located uplink pilot time slot; Basic midamble total 128 may be generated as a training sequence Midamble code regular time slots. 这些码归属于32个码组,对应关系如下<table>table see original document page 14</column></row> <table> These codes are assigned to 32 yards groups, the correspondence relationship as <table> table see original document page 14 </ column> </ row> <table>

如图3所示,在本实施例中,作为优选实施例,首先将SYNC—DL、 SYNC—UL、 scrambling code、 basic midamble码分别分为3类(SI),包括用于终端间直接通信的MM类,用于标识终端与转发器通信的MR类,以及为将来拓展业务预留的保留类。 3, in the present embodiment, as a preferred embodiment, the first SYNC-DL, SYNC-UL, scrambling code, basic midamble code are divided into three categories (the SI), comprising a terminal for direct communication between class MM, MR class for identifying a terminal in communication with the repeater, and the retention class reserved for future expansion. 具体的分类方法是:首先保留现有技术中终端使用的SYNC—DL、 SYNC一UL、 scrambling code 、 basic midamble Code的石马纟且分类方式,即共有32个码组,每个码组中包含1个SYNC—DL码、8个SYNC—UL码、4个scrambling code和4个basic midamble code, 并且scrambling code与 Specific classification methods are: firstly reserved prior art terminal for use SYNC-DL, SYNC a UL, scrambling code, basic midamble Code Shima Si and classification, i.e., a total of 32 code groups, each code group comprising a SYNC-DL code, eight code SYNC-UL, scrambling code four and four basic midamble code, and scrambling code and

basic midamble Code--对应。 the corresponding basic midamble Code--. 在此1^5出上,选出一个或多个SYNC—DL码作 On this 1 ^ 5, selecting one or more of the SYNC-DL code for

为MM类SYNC_DL码,在同一码组中挑选一个或多个SYNC—UL码作为MM类SYNC—UL码,挑选一个或多个scrambling code、 basic midamble Code 作为MM类scrambling Code、 basic midamble Code ( S2 )。 The MM type SYNC_DL code, the same code in the selected group of one or more SYNC-UL MM class code as code SYNC-UL, one or more selected scrambling code, basic midamble Code MM type as scrambling Code, basic midamble Code (S2 ). 同一码组中未#皮选中的SYNC UL、 scrambling code、 basic midamble Code都是保留类码,以备将来新增的转发器使用。 Not the same group code # transdermal selected SYNC UL, scrambling code, basic midamble Code class code are reserved for future use of the new transponder.

同样,另外选出一个或多个SYNC一DL码作为MR类SYNC—DL码,在同一码组中挑选一个或多个SYNC一UL码作为MR类SYNC—UL码,挑选一个或多个scrambling code、 basic midamble Code作为MR类scrambling code、 basic midamble Code。 Similarly, selecting one or more additional SYNC-DL code as MR SYNC-DL code class, a selection of one or more SYNC UL code in the same code group as a class of MR-SYNC UL code, the selection of one or more scrambling code , basic midamble code as an MR-based scrambling code, basic midamble code. 同一码组中未被选中的SYNCJJL、 scrambling code、 basic midamble Code作为保留类码,以备将来新增的终端使用。 In the same code group unselected SYNCJJL, scrambling code, basic midamble Code as reserved class code, the new terminal future.

其余未被选择的SYNC—DL码,以及与这些SYNC—DL码属于相同码组的SYNC—UL、 scrambling code、 basic midamble Code均作为保留类码。 Remaining unselected SYNC-DL code, and a SYNC-DL code which belongs to the same SYNC-UL code groups, scrambling code, basic midamble Code are reserved as a class code.

在直通模式下,终端开机后会首先在支持的转发器工作频点上接收信号(S3),根据接收到的信号判断是否存在转发器(S4)。 In the direct mode, after the terminal is powered on will first receive signal (S3) on the support transponder working frequency, in accordance with the received signal determining the presence or absence of a transponder (S4). 终端使用MR类SYNC—DL、 scrambling code、 basic midamble码通过相关运算等方法进行搜索, 而用MM类SYNC—DL、 scrambling code、 basic midamble码来搜索主叫终端, 搜索方法与公网中终端开机搜索网络的过程(通常称为TD-SCDMA终端的小区初搜过程)是一致的。 MR using a terminal-based SYNC-DL, scrambling code, basic midamble code by searching correlation calculation or the like, and the class with MM SYNC-DL, scrambling code, basic midamble code to search for the calling terminal, the search method with the public network terminal is powered network search process (commonly referred to as the beginning of a cell of the TD-SCDMA terminal search process) is the same. 搜索过程如下: Search process is as follows:

首先4姿照接收信号强度,对可能有信号的频点排序;并一艮据帧结构的特性, 用功率特征窗法搜寻SYNC^DL的大致位置;然后用相关法找出SYNC—DL的准确位置和码型(即具体哪个SYNC_DL码);接着利用SYNC估计本地接收机与远端发射机的频率偏差,粗调频偏;利用信道估算确定Basic midamble 码,也因此确定了Scrambling code;然后利用Midamble码和数据部分进行进一步精调频偏;寻找SYNC—DL与midamble之间的相对相位偏差的变化图样, 确定Sl信息(SI是一种SYNC_DL与midamble之间特定的相对相位偏差变化图样,可以指示出20ms的同步),获取20ms同步;最后接收广##息。 4 first posture as received signal strength, frequency pair might sequencing signal; Gen according to characteristics and a frame structure, the approximate location of the search by the SYNC ^ DL power characteristic window method; and accurately find the SYNC-DL by the correlation method and pattern position (i.e. which specifically SYNC_DL code); then the frequency offset is estimated by using the SYNC local receiver with the remote transmitter, FM partial crude; channel estimate is determined using Basic midamble code, and thus determines Scrambling code; then using Midamble code and a data portion further fine frequency modulated bias; look for changes in the relative phase deviation between the pattern of the SYNC-DL and midamble, determining Sl information (SI is a specific relative phase deviation between the variation pattern of one kind and SYNC_DL midamble, may indicate synchronization), synchronous acquisition of 20ms 20ms; ## last received wide interest.

终端若搜索到转发器,则会解析转发器发出的信息,该信息中包含帧号、 当前呼叫状态、转发器ED等信息(S5 ),终端自身存储有可用转发器的列表, 根据接收到的转发器ID判断当前转发器是否可用。 If the search for the terminal to the transponder, the transponder information sent will parse this information includes frame number, call status, and other information ED repeater (S5), the terminal itself stores a list of available repeater, according to the received repeater repeater determines whether the current ID is available. 若转发器可用,则终端会与转发器进行同步,并周期性尝试解析转发器发出的消息,根据消息中被叫用户的标识来判断是否存在一个呼叫以及是否需要加入到该呼叫(S7)。 If the repeater is available, the terminal will be synchronized with the transponder, and periodically attempt to resolve the message sent by the repeater, determined according to the message identifier of the called user if there is a call, and whether to join the call (S7). 若搜索不到可用转发器,则在主叫终端的工作频点接收信号(S8),根据接收到的信号判断是否存在可用主叫终端(S9)。 If the repeater search is not available, the operating frequency of the calling terminal in the received signal (S8), according to the received signal determining whether there is an available calling terminal (S9).

如果终端搜索到可用的主叫终端,则会尽快取得与该主叫终端的同步,并解析该主叫终端发出的消息(SIO),该呼叫消息中包括被叫用户的标识,若被叫标识与自身标识匹配,则表示自己需要加入该呼叫,则加入到该终端发起的呼叫之中(S7)。 If the terminal searches available to the calling terminal will soon acquire synchronization with the calling terminal, and parses the message (SIO) issued by the calling terminal, the call message includes the called user ID, if the called identifier with its own identification match, then they need to join the call, the terminal is added to the call initiated in (S7).

如果开机后所有直通频点上都搜索不到可用转发器和可用的主叫终端,则终端会在主叫终端可用频点上以固定周期(如160ms、 320ms)重复搜索主叫终端。 If the boot can search through all the available frequencies not available to the transponder and the calling terminal, the terminal will be available at a fixed period (e.g., 160ms, 320ms) repeat the search frequency at the calling terminal the calling terminal. 或者用户主动触发搜索转发器的过程,则终端按照上述开机搜索的转发器和主叫终端的过程进行搜索。 Trigger a search process or the user active transponder, the terminal repeater search process according to the calling terminal and the start search.

终端一旦加入到呼叫当中,则iiX连接状态。 Once the addition terminal to which the call is connected iiX state. 在专网通信中,通信模式是一对一或一对多,即一个主叫终端向另一个终端喊话,或者一个主叫终端向另外多个终端喊话。 In the private network communication, the communication mode is one to one or one to many, i.e., a calling terminal to another terminal loudspeaker or a loudspeaker calling terminal to a plurality of additional terminals. 只有拥有谪祐权的主叫终端才能向其他终端喊话,没有讲话权的终端在呼叫状态下只能收听。 Only those with the right to woo disgrace to propaganda calling terminal to another terminal, the terminal is not speaking only to listen to the call in the state. 这样当一个用户喊话结束后'如杲其他用户需要喊话,就要获取讲话权。 So that when a user ends propaganda 'as Gao other users need to propaganda, we should get the right to speak. 即讲话权的转移。 Namely the transfer of the right to speak. 当主叫终端身份发生转移时, 新的主叫终端将保持帧号的连续性。 When the calling terminal identity transfer occurs, the new calling terminal to maintain continuity of the frame number. 而如果此呼叫不涉及转发器'则所有终端均须调整各自的接收机定时。 If the call does not involve the transponder 'all terminals must adjust their timing of the receiver.

16以上为存在转发器的情况下确定可用信号的实现过程,以下介绍不存在转发器的情况下确定可用主叫终端的实现过程。 16 above determination process can be implemented to signal the presence of the transponder, the following describes the process can be implemented to determine the calling terminal in the absence of a repeater.

第二实施例:在本实施例中,仍用第一实施例中的码子分类方式,但仅用其中的MM类码,包括下行导频码(SYNC—DL )、上行导频码(SYNCJJL )、 扰码(Scrambling)、基本中置码(Basic midamble)作为主叫终端的专用码字。 Second embodiment: embodiment, the first embodiment is still used in the embodiment of the classification code word, but only where the class code of the MM in the present embodiment, includes a downlink pilot code (SYNC-DL), uplink pilot symbols (SYNCJJL) scrambling code (a scrambling), basic midamble (basic midamble) of the calling terminal as a specific codeword.

在直通模式下,终端开机后会首先在支持的直通频点上接收信号,根据接收到的信号判断是否存在主叫终端。 In the direct mode, after the terminal is powered on will first receive signals on frequency pass-through support, it determines whether the received signal exists according to the calling terminal.

如果终端搜索到主叫终端,则会尽快取得与该主叫终端的同步,并解析该主叫终端发出的消息,该呼叫消息中包括被叫用户的标识,若被叫标识与自身标识匹配,则表示自己需要加入该呼叫(即该主叫终端是可用的),则加入到该终端发起的呼叫之中。 If the terminal to search for the calling terminal will soon acquire synchronization with the calling terminal and parse the message sent to the calling terminal, the call message includes the called user ID, if the called identifier matches the own identification, It said they need to join the call (i.e., the calling terminal is available), then was added to the call being initiated by the terminal.

如果开机后所有直通频点上都搜索不到可用的主叫终端,则终端会在主叫终端工作频点上以固定周期(如160ms、 320ms)重复^:索主叫终端。 If the boot is not available to the calling terminal searches all frequencies through, the terminal of the calling terminal will be repeated in the working frequency with a fixed period (e.g., 160ms, 320ms) ^: Cable calling terminal.

终端一旦加入到呼叫当中,则进入连接状态。 Once the addition terminal to which the call is into a connected state. 在专网通信中,通信模式是一对一或一对多,即一个主叫终端向另一个终端喊话,或者一个主叫终端向另外多个终端喊话。 In the private network communication, the communication mode is one to one or one to many, i.e., a calling terminal to another terminal loudspeaker or a loudspeaker calling terminal to a plurality of additional terminals. 只有拥有讲话权的主叫终端才能向其他终端喊话,没有讲话权的终端在呼叫状态下只能收听。 Only those with the right to speak to propaganda calling terminal to another terminal, the terminal is not speaking only to listen to the call in the state. 这样当一个用户喊话结束后,如果其他用户需要喊话,就要获取讲话权。 So that when a user propaganda ends, if other users need to propaganda, we should get the right to speak. 即讲话权的转移。 Namely the transfer of the right to speak. 当主叫终端身份发生转移时, 新的主叫终端将保持帧号的连续性。 When the calling terminal identity transfer occurs, the new calling terminal to maintain continuity of the frame number. 所有终端均须调整各自的接收才几定时。 All terminals must adjust their timing of receiving only a few.

以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以作出若干改进和润饰, 这些改进和润饰也应视为本发明的保护范围。 The above are only preferred embodiments of the present invention, it should be noted that those of ordinary skill in the art, in the present invention without departing from the principles of the premise, further improvements and modifications may be made, these improvements and modifications should also be the protection scope of the present invention.

17 17

Claims (15)

1、一种直通模式下终端确定可用信号的方法,其特征在于,包括步骤: 1)建立转发器使用的码字的专用码表,并将所述转发器的工作频点和所述专用码表分别存储在终端中; 2)在所述转发器的工作频点接收信号; 3)根据所述接收的信号中解析出的码字与所述专用码表中的码字对比,判断当前是否存在转发器; 4)当存在转发器时,解析所述转发器发出的消息,并根据解析后的消息,确定可用转发器。 1, a through mode of the terminal available method for determining signal, characterized by comprising the steps of: a) establishing a dedicated code table codeword repeater used, the operating frequency of the repeater and the specific code and tables are stored in the terminal; 2) receiving a signal at the working frequency of the repeater; 3) according to Comparative codeword in the received signal by parsing the code words of the specific code table, determine whether the current with repeaters; 4) when the transponder is present, it parses the message emitted transponder, according to the parsed message, determining available transponders.
2、 根据权利要求l所述的直通模式下终端确定可用信号的方法,其特征在于,当前频点不存在可用转发器时,还包括:根据步骤1)存储的转发器的工作频点的下一个频点执行步骤2)和步骤3 )。 2. The method of determining the available signal terminal direct mode according to claim l, characterized in that the current frequency point is not present when the repeater is available, further comprising: a working transponder according to the step 1) of the stored frequency a frequency point 2) and the step of performing step 3).
3、 根据权利要求l所述的直通模式下终端确定可用信号的方法,其特征在于,所述码字包括:下行导频码、上行导频码、扰码以及基本中间码,所述下行导频码、上行导频码、扰码以及基本中间码属于同一码组。 3. The method of determining the available signal terminal direct mode according to claim l, wherein said code word comprises: a downlink pilot symbol, an uplink pilot code, scrambling code and basic midamble codes, the downlink pilot frequency code, the uplink pilot code, scrambling code and basic midamble codes belonging to the same group.
4、 一种直通模式下终端确定可用信号的方法,其特征在于,包括步骤:[41) 建立各主叫终端使用的码字的专用码表,并将所述专用码表以及所述主叫终端使用的工作频点存储在终端中;[42) 在所述主叫终端的工作频点接收信号;[43) 根据接收的信号中解析出的码字与所述专用码表中的码字对比,判断当前是否存在主叫终端;[44) 若存在主叫终端,则解析所述主叫终端发出的消息,并才艮据所述消息确定可用的主叫终端。 4, the terminal a through mode determination method available signals, characterized by comprising the steps of: [41) to establish a dedicated codewords of each code table used by the calling terminal, and the specific code table and the calling working frequency point used by the terminal is stored in the terminal; [42) receiving a signal at the working frequency of the calling terminal; [43) parses the codewords received signal with the specific code table in accordance with contrast, it is determined whether there is currently calling terminal; [44) when the calling terminal exists, parsing the message sent by the calling terminal, and Burgundy was determined according to the calling terminal available message.
5、 根据权利要求4所述的直通模式下终端确定可用信号的方法,其特征在于,所述步骤41)还包括:建立转发器使用的码字的专用码表,并将所述转发器的工作频点和所述转发器使用的码字的专用码表分别存储在终端中;所述步骤42)之前还包括:按照下述步骤确定是否存在可用转发器: A)在所述转发器的工作频点接收信号;B )根据在所述转发器的工作频点接收的信号中解析出的码字与所述转发器使用的码字的专用码表中的码字对比,判断当前是否存在转发器; 当不存在可用转发器时,执行步骤42)至步骤44); 当存在可用转发器时,不执行步骤42)至步骤44)。 5. The method of claim determine available signal terminal direct mode according to claim 4, wherein said step 41) further comprising: establishing a dedicated code table codeword transponder used and the repeater working frequency codeword and the forwarder uses a dedicated code table stored in the terminal, respectively; prior to the step 42) further comprises: according to the following steps to determine if there is an available transponder: a) in said repeater working frequency received signal; B) according to Comparative codeword specific code table in the code word in the analyzed signal the transponder working frequency received codeword used by the repeater, it is determined whether there is currently transponder; when there is no repeater is available, step 42) to step 44); if there are available repeater does not perform step 42) to step 44).
6、 根据权利要求5所述的直通模式下终端确定可用信号的方法,其特征在于,所述步骤41)之前还包括:将码字分类,其中一类码字用于标识与转发器的对应关系,另一类码字用于标识与主叫终端的对应关系。 6. The method of determining the available signal terminal direct mode according to claim 5, characterized in that, prior to the step 41) further comprises: a classification code word which corresponds to a class code word for identifying the repeater relationship, and the other codeword for the corresponding relationship between the identifier of the calling terminal.
7、 根据权利要求6所述的直通模式下终端确定可用信号的方法,其特征在于:分类后的码字还包括用于备用的保留类码。 7, a terminal according to claim determine available direct mode signals according to claim 6, characterized in that: the classification code word comprises a further backup retention class code.
8、 根据权利要求4或6所述的直通模式下终端确定可用信号的方法,其特征在于:若当前频点不存在可用主叫终端,则根据步骤41)存储的主叫终端的工作频点的下一个工作频点执行步骤42 )和步骤43 )。 8. The method of determining the available signal terminal direct mode 4 or claim 6, wherein: if there is no available frequency current calling terminal, the calling terminal according to the working step 41) the stored frequency a working frequency point of the next step 42) and step 43).
9、 根据权利要求6所述的直通模式下终端确定可用信号的方法,其特征在于,所述步骤还包括:若当前频点不存在可用主叫终端,则当人工干预时, 执行步骤A)至步骤B)。 9. The method of determining the available signal terminal direct mode according to claim 6, wherein said step further comprises: if the current frequency point is available the calling terminal does not exist, when manual intervention, step A) to step B).
10、 根据权利要求6所述的直通模式下终端确定可用信号的方法,其特征在于,当不存在可用转发器时,在执行步骤42)之前还包括步骤:设置解析周期,当到达所述解析周期时,再执行步骤42 )和43 )。 10. The method of determining the available signal terminal direct mode according to claim 6, characterized in that, when there is no available transponders, before performing step 42) further comprises the step of: parsing setting period, upon reaching the analysis time period, then perform step 42) and 43).
11、 根据权利要求IO所述的直通终端进行通信的方法,其特征在于,所述周期为160ms或320ms。 11. The method of claim IO terminals communicating through, wherein the period is 160ms or 320ms.
12、 一种直通终端进行通信的方法,其特征在于,包括步骤: 121)根据权利要求1确定可用转发器:122) 与该可用转发器进行同步,并解析转发器发出的信息:123) 才艮据所述信息通过所述可用转发器进行通信。 12. A method of communicating through a terminal, characterized by comprising the steps of: 121) according to claim 1 Determine repeater: 122) is available for synchronization with the transponder, the transponder and analysis information sent: 123) was According to the Gen information available by the communication transponder.
13、 根据权利要求12所述的直通终端进行通信的方法,其特征在于,还包括步骤:设置解析周期,当到达所述解析周期时,解析所述转发器发出的信息。 13, through the terminal 12 in accordance with the method of communication as claimed in claim, characterized in that, further comprising the step of: setting analytical cycle, when the cycle reaches the parsing information parsing the emitted forward.
14、 一种直通终端进行通信的方法,其特征在于,包括步骤:141) ;陂叫终端确定可用主叫终端;142) 所述被叫终端与该可用主叫终端进行同步,并解析主叫终端发出的信息;143 )所述净皮叫终端才艮据所述信息与所述主叫终端进行通信。 14. A method of communicating through a terminal, characterized by comprising the steps of: 141); Pei called terminal determines the calling terminal is available; 142) synchronized with the called terminal to the calling terminal is available, the caller and parses information sent from the terminal; 143) until the net Paper Gen calling terminal according to the information of the calling terminal communicates.
15、 根据权利要求14所述的直通终端进行通信的方法,其特征在于,所述步骤还包括:解析所述主叫终端发出的信息,当判断所述主叫终端改变为另一个终端时,调整接收机的定时器,向新的主叫终端保持同步。 15, through terminal according to claim 14, wherein said method of communicating, wherein said step further comprises: parsing the information sent by the calling terminal, when determining that the calling terminal is changed to another terminal, adjust the receiver timer synchronized to the new calling terminal.
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