CN100493252C - Method for switching mobile terminal service in digital TV broadcast multiple frequency network - Google Patents

Method for switching mobile terminal service in digital TV broadcast multiple frequency network Download PDF

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CN100493252C
CN100493252C CN 200510132667 CN200510132667A CN100493252C CN 100493252 C CN100493252 C CN 100493252C CN 200510132667 CN200510132667 CN 200510132667 CN 200510132667 A CN200510132667 A CN 200510132667A CN 100493252 C CN100493252 C CN 100493252C
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adjacent
band
service
frequency
program
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CN1988718A (en
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吕林军
毅 张
莹 徐
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华为技术有限公司
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Abstract

本发明公开了一种在数字电视广播多频网中移动终端切换的方法。 The present invention discloses a method for a terminal handover in the digital mobile TV broadcast multi-frequency network. 网络侧发送的相邻频段消息NFM中包含关于切换的信息,移动终端在接收服务频段载频脉冲节目信号的间隔期内,接收其他频段的载频信息,并根据接收到的切换信息以及服务频段和相邻频段的载频信息决定是否进行切换以及如何切换,切换时通过设置延时来避免乒乓切换。 Adjacent bands message sent by the network NFM contains information about the handover, the mobile terminal during the interval to receive a service band carrier frequency pulse program signal, receive other band carrier frequency information, and based on the received switching information and a service band and adjacent band carrier frequency information determining whether to handover and how to switch, is avoided by setting the delay when switching ping-pong handovers. 本发明对移动终端处于的两种稳定状态:空闲态和业务态,分别给出了实施切换的具体方案。 Two stable states according to the present invention the mobile terminal is in the: idle state and operational state, we are given a specific implementation of the program switch. 本发明可以实现数字电视广播多频网中移动终端进行平滑的业务切换,且切换过程中避免了乒乓切换。 The present invention may be a digital television broadcast multi-frequency network the mobile terminal smoothing service handover, and the handover process to avoid the ping-pong handover.

Description

数字电视广播多频网中移动终端进行业务切换的方法 Digital television broadcasting multi-frequency network in a mobile terminal service switching

技术领域 FIELD

本发明涉及无线通信技术领域,特别涉及一种在数字电视广播多频网中移动终端进行业务切换的方法。 The present invention relates to wireless communication technologies, and in particular relates to a method for a mobile terminal in a digital television broadcasting multi-frequency network for traffic switching.

背景技术 Background technique

纠错功能等,使手机或其他移动终端接收高清晰度的数字电视节目成为了可能。 Error correction, so that cell phones or other mobile terminals to receive high-definition digital TV programs as possible.

在数字电视广播网络中,为了避免各个发射台(TTX)发出的信号互相千扰, 一种技术方案为采用多频网技术,即相邻发射台使用不同的栽波频率发射相同的电视节目。 In digital television broadcasting network, the signal in order to avoid the respective transmitter (TTX) emitted by each one thousand interference, a technical solution for the multi-frequency network technology, i.e. neighboring transmitting stations use different plant wave frequency to transmit the same television program. 在这种多频网的数字电视广播业务模式下,各个发射台只能各自覆盖有限的区域,移动用户从一个发射台的覆盖区域移动到另一个发射台的覆盖区域时,业务需要进行无缝切换。 In digital television broadcasting business models such multi-frequency network, each transmitter only their limited coverage area, the mobile subscriber from a coverage area of ​​the station transmitting to another transmission coverage area station, business needs seamlessly switch. 下面结合示意图简单描迷一下这种业务过程。 Below in conjunction with schematic diagram of a simple description of the fans look at this business process. 图1为多频网网络示意图,Fl、 F2和F3是相邻的三个发射台,它们的服务载频频率分别为Fl、 F2和F3,发射台之间没有时间同步,但发送的业务内容一样,每个节目均以脉冲形式发送,发射台覆盖的区域被称为小区。 Figure 1 is a multi-frequency network diagram network, Fl, F2 and F3 are three adjacent transmission station, which service carrier frequency of Fl respectively, F2 and F3, the emission is no time synchronization between the stations, but the service content transmitted as each program are in the form of pulses sent area station coverage emitted is referred to as a cell. 图中接收终端正在接收发射台Fl的节目A (Service A), 在脉冲的间隔时期(Off time)内,接收终端搜索相邻发射台的载频频段, 当发现有节目内容相同且质量更好的信号可以使用时,则切换到信号质量更好的栽频频率继续接收节目。 FIG receiving terminal is receiving a program A (Service A) transmitting station of Fl, within an interval period pulse (Off time), the receiving terminal the carrier frequency band transmitting station search the adjacent, when found in the same program content and better quality when a signal can be used to switch to the better signal quality is planted frequencies continue to receive the program. 另外,移动终端还可以在不同节目之间进行切换,这种情况下,移动终端同样要在相邻发射台的业务内容中进行最优化的选择。 Further, the mobile terminal may also switch between different programs, in this case, the mobile terminal similarly to optimize the choice of adjacent transmitting station service content.

在上面所述的业务切换过程中,网络侧需要确定发送哪些切换参数以及具体的发送方式;移动终端需要才艮据这些切换参数判断是否需要进行切换, 以及采取何种方式切换,并且要保证防止移动终端的兵乓切换。 In the above service handover procedure, the network side needs to determine which handover parameter and the specific transmission mode transmission; mobile terminal needs only Gen From these handover parameters determines whether to perform handover, and in what manner the switching, and to ensure preventing ping pong mobile terminal handover.

由于目前数字电视广播标准正在逐渐成熟中,目前还没有给出这种移动终端业务切换的具体实现方式。 As the current digital television broadcasting standard is maturing, the not yet give a specific implementation of such a mobile terminal service handover.

发明内容 SUMMARY

有鉴于此,本发明的主要目的在于提出一种在数字电视广播多频网中移动终端进行业务切换的方法,使移动终端能实现数字电视广播多频网中业务的平滑切换。 In view of this, the main object of the present invention is to provide a method in a digital television broadcasting multi-frequency network in a mobile terminal service handover so that the mobile terminal can realize digital television broadcasting multi-frequency smooth switch network traffic.

本发明方法包括如下步骤: The method of the present invention comprises the steps of:

A、 网络側向移动终端发送切换信息; A, the network side mobile terminal transmits the handover information;

B、 移动终端根据收到的切换信息以及检测到的服务频段和相邻频段栽频的导频强度,进行频段切换。 B, the mobile terminal based on the switching information received and detected service band and adjacent bands planted pilot strength pilot performs band switching.

较佳地,步骤A中,网络侧通过相邻频^险消息NFM发送切换信息。 Preferably, step A, the network side through the adjacent frequency ^ risk message NFM sending handover information. 较佳地,所迷NFM通过业务指示SI、或传输参数信令TPS传输。 Preferably, the NFM by traffic indication the SI, or Transmission Parameter Signaling TPS transmission fans. 所述切换信息包括:可用服务频段门限、不可用服务频段门限、立即切换 The switching information comprising: an available service band threshold, unavailable service band threshold, immediately switch

门限、相同业务切换的导频强度差、切换延迟时长和相邻频段信息。 Threshold, the same service switching pilot strength difference, length and adjacent bands information switching delay.

所述相邻频段信息还进一步包括:相邻频段数目、每个相邻频段的物理层 The adjacent frequency band information further comprises: the number of adjacent bands, each adjacent band physical layer

配置信息、频率标识、相邻频段栽频的频率和节目标识。 Configuration information, frequency identifier, adjacent bands planted frequencies and program identification frequency.

移动终端进行频段切换的具体步骤随移动终端当前所处的状态有所不同, DETAILED step mobile terminal band switching over which the state of the mobile terminal is currently different,

下面分别对移动终端处于空闲态和业务态的情况分别加以说明。 Where Next, the mobile terminal respectively in the idle state and operational state will be described separately. 移动终端当前处于空闲态,则步骤B中所述进行频段切换为: 移动终端在服务频段节目脉冲信号的间隔内接收切换信息,建立或更新频 The mobile terminal is currently in an idle state, then Step B of frequency bands is switched to: a mobile terminal receives handover information in the interval service segment program pulse signal, create or update frequency

段列表,分别对服务频段栽频和相邻频段栽频进行处理,之后再接收并緩存此 A list of segments, each service band planted frequency and adjacent bands planted frequency for processing, after then receives and caches this

次服务频段栽频脉沖信号的节目内容,并删除过时的内容。 The current service frequency bands planted frequency program content of the pulse signal, and delete obsolete content. 所述对相邻频段栽频进行处理为: The pair of adjacent bands planting frequency is processed as follows:

从il到i的值等于相邻频段栽频数目,对每个i判断第i个相邻频段栽频的导频强度: From il to the value of i is equal to adjacent bands planted frequency number of guiding each i determines the i-th adjacent bands planted frequency pilot strength:

如果导频强度小于立即切换门限,则判断该相邻频段是否在频段列表中, 如果在频段列表中,则从频段列表中清除该相邻频段栽频及其节目信息,否则不作任何操作; If the pilot strength is less than immediately switching threshold, it is judged that the adjacent band is in the frequency list, if the frequency band list, from the frequency list to clear the adjacent bands planted frequency and program information, or does nothing;

如果导频强度大于等于立即切换门限且小于不可用服务门限,则先判断是否已启动该相邻频段载频对应的切换定时器,如未启动,则启动该切换定时器; 否则,再判断该相邻频段栽频对应的切换定时器是否超时,若超时,则从频段列表中清除该相邻频段栽频及其节目信息,若未超时,则不作任何操作; If the pilot strength greater than or equal to immediately switch threshold and less than the unavailable service threshold, then first determines whether to start the adjacent band carrier frequency corresponding to the switching timer, if not start, then starts the switching timer; otherwise, further determining whether the adjacent bands planted whether the frequency corresponding to the handover timer expires, if the timeout from the frequency list to clear the adjacent bands planted frequency and program information, if not timed out, no any operation;

如果导频强度大于等于不可用服务门限且小于可用服务门限,则判断是否已启动该相邻频段栽频对应的切换定时器,若是,则停止该定时器,否则不作任何搡作; If the intensity is greater than the pilot equal to unavailable service threshold and is less than the available service threshold, it is determined whether to start the adjacent bands planted frequency corresponding to the switching timer, if yes, stopping the timer, or without any push for;

如果导频强度大于等于可用服务门限,则先保存该相邻频段载频的导频强度,再判断是否该相邻频段栽频的节目标识表示不同节目内容且未保存该相邻频段栽频节目信息,若是,则搜索并保存该相邻频段栽频节目信息,否则不作任何搡作。 If the pilot strength is not less than the available service threshold, to save the adjacent band carrier frequency pilot strength, and then determines whether or not the program identification band planted frequencies adjacent represent different program content and does not save the adjacent bands plant video program information, and if so, search for and save the adjacent bands planted frequency program information, otherwise it does not make any push for.

所述对服务频段载频的处理为: The processing service band carrier frequency as:

判断服务频段栽频的导频强度的大小: Analyzing service band planted have a pilot strength Size:

如果导频强度小于立即切换门限,则查找相邻频段栽频的导频信息,选择导频强度最强的频段栽频为服务频段栽频; If the pilot strength is less than the immediate switch threshold, then search for pilot information adjacent bands planted frequency, selecting pilot strength of the strongest band planted frequency service band plant frequency;

如果导频强度大于等于立即切换门限且小于不可用服务门限,则先判断是否已启动服务频段栽频对应的切换定时器,如杲未启动,则启动该切换定时器; 否则,判断服务频段载频对应的切换定时器是否已超时,若超时,则查找相邻频段载频的导频信息,逸择导频强度最强的频段载频为服务频段载频,若未超时,不作任何操作; If the pilot strength greater than or equal to immediately switch threshold and less than the unavailable service threshold, then first determines whether to start the service band planted frequency corresponding to the switching timer, such as Gao not started, starts the handover timer; otherwise, it is determined service band carrier whether the frequency corresponding to the switching timer has timed out, if the timeout, find the pilot information of the adjacent band carrier frequencies, Yi optional pilot strength of the strongest band carrier frequency service band carrier frequency, if not timed out, without any operation;

如果导频强度大于等于不可用服务门限,则判断是否已启动服务频段栽频对应的切换定时器,若已启动,则停止该定时器,否则不作任何搡作。 If the intensity is greater than the pilot equal is not restricted service door, it is determined whether to start the service band planted frequency corresponding to the switching timer, Ruoyi start, stop the timer, or without any shoving for.

移动终端当前处于业务态,则步骤B中所述进行频段切换包括:移动终端在服务频段节目脉冲信号的间隔内接收切换信息,分别对服务频段载频和相邻频段载频进行处理,之后接收并緩存此次服务频段载频脉冲信号的节目内容,并显示在屏幕上。 The mobile terminal is currently in a traffic state, the step B, the performing frequency switching comprising: a mobile terminal receives handover information in the interval service segment program pulse signal, respectively service band carrier frequency and the adjacent frequency carrier frequency treatment, after receiving and the buffer of the service frequency carrier program content frequency pulse signal and displayed on the screen.

所述对服务频段载频和相邻频段栽频的处理进一步包括: 判断服务频段栽频的导频强度: The service band carrier frequency and adjacent bands plant processing frequency further comprises: determining the service band planted pilot pilot strength:

如果服务频段载频的导频强度小于立即切换门限时,则执行如下步骤: If the service band carrier frequency pilot strength is less than the switching threshold Now, the following steps are performed:

Bll、提示用户即将离开原节目服务区,并在屏幕上显示可供选择的节目,自. Bll, prompting the user to leave the original program service area and displays alternative program on the screen since.

io ,&, io, &,

B12、判断用户是否对节目进行选择,如果是,则切换到用户指定频段的节目上,结束当前处理流程,否则,搜索节目标识表示相同节目内容的相邻频段,寻找导频强度最强且大于可用服务门限的相邻频段; B12, it determines whether the user of the program selection, if so, switching to a user-specified frequency a program, ending the current process, otherwise, the search program identifier indicates adjacent bands the same program content, find the pilot strength of the strongest and greater than available service threshold adjacent bands;

B13、判断是否找到导频强度最强且大于可用服务门限的相邻频段,如果找到,则切换到所找到的相邻频段上,否则,进一步搜索节目标识表示不同节目内容的相邻频段,切换到所有相邻频段中导频强度最强的频段上; B13, determines whether to find a pilot strength of the strongest and greater than adjacent bands available services threshold, if found, to switch to an adjacent frequency found Otherwise, further searching the program identifier indicates adjacent bands different program content, switching all adjacent bands of the pilot on the intensity of the strongest band;

如果服务频段栽频的导频强度大于等于立即切换门限且小于不可用服务门限时,则执行如下步骤: If the service band planted pilot pilot strength greater than or equal to immediately switch threshold and less than the unavailable service threshold, the following steps are performed:

B21、搜索已启动切换定时器的相邻频段,判断是否找到满足条件的相邻频段,如果找到,则判断所找到的相邻频段对应的定时器是否已超时,若是, 则将节目切换到该相邻频段上,结束当前处理流程,否则不作任何操作,结束当前处理流程;如果未找到,则提示用户即将离开原节目服务区并显示可供选择的节目信息; B21, the search has started an adjacent band switching timer to determine whether to find adjacent bands to meet the conditions, if found, it is determined whether the frequency band corresponding adjacent timer found has expired, and if yes, the program switches to the adjacent frequency bands, the end of the current process, otherwise no action to end the current process; if not found, the user is prompted about to leave the original program service area and displays alternative program information;

B22、判断用户是否对节目进行逸择,如果是,则切换到用户指定频段上, 结束当前处理流程,否则,搜索节目标识表示相同节目内容、导频强度最强且大于可用服务门限的相邻频段; B22, determines whether the user of the program for Yi optional, if so, switching to a user-specified frequency bands, the end of the current process, otherwise, the search program denote identical program content, the pilot strength of the strongest and greater than the adjacent available service threshold band;

B23、判断是否找到表示相同节目内容且导频强度大于可用服务门限的相邻频段,如果找到,则启动所找到的频段对应的切换定时器,接收并緩存该频段的节目数据帧,结束当前处理流程;否则,进一歩搜索节目标识表示不同节目内容的相邻频段,找到所有相邻频段中导频强度最强的一个,启动所找到的 B23, determines whether or not find represent the same program content and the pilot strength is greater than the adjacent bands available services threshold, if found, the start frequency corresponding to the found switching timer, receiving and caching the program data frame of the band, and ends the present processing process; otherwise, into a ho search program to identify represent different program content of the adjacent band, find all the adjacent bands in the pilot strength of the strongest, start found

频m应的切换定时器,接收并緩存该频段的节目数据帧; Frequency m corresponding switching timer, receiving and buffering the band of the program data frame;

如杲服务频段的导频强度大于等于不可用服务门限时,从i=l到i的值等 As Gao service band pilot strength greater than or equal unavailable service threshold from i = l to the value of i, etc.

于相邻频段数目,对每个i执行如下步骤: To the number of frequency bands adjacent, perform the following steps for each i:

B31、判断第i个相邻频段的导频强度以及该频段的节目标识: B31, determines the i-th adjacent bands pilot strength and frequency of program identification:

如果导频强度小于不可用服务门限,则先判断该相邻频段是否存在于频段列表中,如果存在,则从列表中清除该相邻频段及其节目信息,如果不存在则转至下一步骤:继续判断是否已启动该相邻频段对应的切换定时器,若已启动, 则停止该定时器并停止接收该相邻频段的节目数据帧; If the pilot strength is less than the unavailable service threshold, to determine whether the adjacent bands exists in the frequency band list, if present, from the list to clear the adjacent bands, and program information, and if not then go to the next step : continue to determine whether to start the adjacent bands corresponding to the switching timer, Ruoyi start, stop the timer and stops receiving the program data frame frequency of the neighbor;

如果导频强度大于等于可用服务门限且节目标识表示相同节目内容,则判断该相邻频段的导频强度减去服务导频的导频强度的强度差是否大于相同业务切换的导频强度差; If the pilot strength is not less than the available service threshold and the program denote identical program content, it is determined derivative of the adjacent bands pilot strength minus the intensity difference service pilot pilot strength is greater than the same service switching pilot strength difference;

若大于导频强度差,则先保存该频段的导频强度,再判断是否已启动该相邻频段对应的切换定时器,若未启动,则启动该相邻频段对应的定时器;在已启动该相邻频段对应的定时器的情况下,接收该相邻频段节目数据帧,再判断该相邻频段节目数据帧号是否大于服务频段节目数据帧号,若大于,则緩存该相邻频段节目数据帧,删除重复的节目数据帧,若小于,则直接执行下一步骤; 判断该相邻频段对应的定时器是否超时,若超时,则切换到该相邻频段上; If greater than the turn intensity difference frequency is to save the band pilot strength, and then determines whether to start the band corresponding to the adjacent switching timer, if no start, corresponding to the band of the adjacent timer is started; has been started a case where the frequency band corresponding to the adjacent timer, the reception-segment program data frame to the adjacent, then determining whether the adjacent segment program data of the frame number is greater than the service-segment program data of the frame number, if so, then cache the adjacent bands program data frame, remove duplicate program data frame, if less than directly to the next step; determining whether the adjacent bands corresponding timer expires, if the timeout is switched to the adjacent bands;

若小于等于导频强度差,则判断该相邻频段信息是否已存在于频段列表中, 若是,则更新其导频强度信息;否则直接转至下一步骤;继续判断是否已启动该相邻频段对应的切换定时器,若已启动,则停止该定时器并停止接收该相邻频段的节目数据帧,结束当前处理流程;否则直接结束当前处理流程; If less pilot strength difference, it is determined whether the adjacent band information is already present in the frequency band list, and if yes, update the pilot strength information; otherwise go directly to the next step; continues to determine whether to start the adjacent bands corresponding switching timer, Ruoyi start, stop the timer and stops receiving the program data frame frequency of the adjacent, end the current process; otherwise, ends the current process;

如果导频强度大于等于不可用服务门限且节目标识表示不同节目内容,则进一步判断导频强度是否大于等于可用服务门限, If the pilot strength greater than or equal unavailable service threshold and the program identifier indicates a different program content, it is further determined whether the pilot strength is not less than the available service threshold,

如果大于等于可用服务门限,则判断是否已保存该相邻频段的导频强度信息,若未保存刺保存该频段的导频强度倌息; If more than equal to the available service threshold, it is determined whether the stored pilot strength information of the adjacent band, if not stored barbed save the band pilot strength groom the information;

如果小于可用服务门限,则判断是否已启动该相邻频段对应的切换定时器, 若已启动,则停止该定时器并停止接收该频段的节目数据帧。 If less than the available service threshold, it is determined whether the start frequency corresponding to the adjacent switching timer, Ruoyi start, stop the timer and stops the program received data frame of the band.

根据本发明提出的方法,网络側通过相邻频段消息NFM向移动终端发送关于切换的信息,无论移动终端处于空闲态还是业务态,移动终端在接收服务频段栽频脉沖节目信号的间隔期内,接收其他频段的载频信息,并根据接收到的切换信息以及服务频段和相邻频段的载频信息决定是否进行切换以及如何切换,切换时通过设置延时来避免乒乓切换。 The method proposed by the present invention, the network side transmits through the adjacent band message NFM to the mobile terminal information about the handover, whether a mobile terminal is in an idle state or service state, the mobile terminal band reception service planted frequency during the interval pulse program signal, receive other frequency carrier frequency information, and decides whether to switch and how to switch, is avoided by setting the delay when switching ping-pong handover according to the received handover information service band and carrier frequency information of the adjacent bands. 这样就达到了实现数字电视广播多频网中移动终端进行平滑的业务切换的目的,且切换过程中避免了兵乓切换。 This achieves a digital television broadcasting multi-frequency network mobile terminals smoothes the destination service switching, and the handover procedure is avoided ping pong handover.

附图说明 BRIEF DESCRIPTION

图1为现有技术中多频网网络示意图; Figure 1 is a mesh network schematic of a prior art multi-frequency;

图2为本发明中当移动终端处于空闲态时的工作流程图; FIG 2 of the present invention, when the mobile terminal is an operation flowchart of an idle state;

图3为如图2所示的工作流程中对相邻频段载频的处理流程图; Figure 3 is a work flow shown in FIG. 2 process flowchart of an adjacent band carrier frequency;

图4为如图2所示的工作流程中对服务频段载频的处理流程图; FIG 4 is a process flowchart illustrating the work flow shown in FIG. 2 for the service band carrier frequency;

图5为本发明中当移动终端处于业务态时的工作流程图; FIG 5 present invention, when the mobile terminal is an operation flowchart service state;

图6为如图5所示的工作流程中当服务频段导频强度小于不可用服务门 FIG 6 is a workflow shown in Figure 5 when the service frequency pilot strength is less than the unavailable service door

限时对相邻栽频的处理流程图; Limited neighboring processing flowchart frequency planted;

图7为如图5所示的工作流程中当服务频段导频强度大于等于不可用服 Workflow as shown in FIG. 5 FIG. 7, when the service frequency pilot strength greater than or equal unavailable service

务门限且小于可用服务门限时对相邻载频的处理流程图; Traffic threshold and limit process flowchart of adjacent carrier frequencies is less than the available service door;

图8为如图5所示的工作流程中当服务频段导频强度大于等于可用服务 8 is a workflow shown in Figure 5 when the service frequency pilot strength is not less than the available service

门限时对相邻载频的处理流程图; Threshold processing flowchart pair of adjacent carrier frequencies;

图9为本发明中当移动终端处于空闲态时移动终端状态切换示意图; 图IO为本发明中当移动终端处于业务态时移动终端状态切换示意图。 The mobile terminal state switching schematic view of FIG. 9 of the present invention, when the mobile terminal is in an idle state; FIG IO of the present invention, when the mobile terminal switches a schematic view in the mobile terminal state when the service state. 具体实施方式 Detailed ways

本发明提出一种在数字电视广播多频网中移动终端进行业务切换的方案, The present invention provides a digital TV broadcast multi-frequency network in a mobile terminal service switching scheme,

网络側通过相邻频段消息(NFM),将切换信息发送给移动终端;移动终端根 The network side adjacent bands message (NFM), the handover information to the mobile terminal; mobile terminal Root

据切换信息以及自身所处的状态,自动进行更新节目信息、重新选择服务频段、 According to the switching information and the state finds itself, automatically updating program information, re-select service band,

状态切换和节目切换。 State switching and program switching.

为使本发明的目的、技术方案和优点更加清楚,下面首先说明切换信息中包括的具体内容,接下来说明用于实现本发明方法的移动终端的具体工作流程, To make the objectives, technical solutions, and advantages of the present invention will become apparent, will be described first switching specific content information included in the next illustrate specific workflow mobile terminal for implementing the method according to the present invention,

最后说明移动终端是如何在不同状态之间进行切换的。 Finally, it illustrates how the mobile terminal is to switch between different states.

在数字电视广播多频网中网络侧发送NFM消息,其中包括了关于切换的信息。 The network side sending NFM message in digital television broadcasting multi-frequency network, which includes information about the handover. NFM消息通过业务指示(SI)或传输参数信令(TPS)传输,具体包括以下内容: NFM message through the traffic indication (SI) or Transmission Parameter Signaling (TPS) transmission, comprises the following:

NFM消息标识'.域名为Nfm_Msg_ID,长度8比特;用来标识NFM消息。 . NFM message identifier 'domain name Nfm_Msg_ID, a length of 8 bits; used to identify the NFM message.

NFM消息序号:域名为Nfm一Seq,数据值为0〜255;当NFM消息中有参数改变时,Nfm_Seq加1模256,否则Nfm—S叫不变。 NFM message number: domain name Nfm a Seq, data is 0~255; when NFM message has parameters change, Nfm_Seq plus 1 mod 256, or Nfm-S called unchanged.

可用服务频段门限:域名为Pwr一add,长度6比特;当服务栽频的导频强度大于等于此门限时,认为该服务栽频传输的业务为可用。 Services available frequency threshold: domain name Pwr an add, a length of 6 bits; when the service planted pilot pilot strength greater than or equal to this threshold, that the service planted frequency transmission service is available.

切换延迟时长:域名为Tmr一Drop,长度6比特;表示进行切换之前必要的延迟时间。 Long switching delay: domain name Tmr a Drop, a length of 6 bits; represents the necessary delay before the handover.

不可用服务频段门限:域名为Pwr一Drop,长度6比特;当服务栽频的导频强度小于此门限值,且持续时间达到Tmr—Drop时,认为该服务栽频传输的业务为不可用,需要向可用的业务切换。 Unavailable service frequency threshold: domain name Pwr a the Drop, a length of 6 bits; when the service planted frequency pilot strength smaller than the threshold, and the duration time reaches Tmr-Drop, that the service planted frequency transmission service is not available , you need to switch to the available business.

立即切换门限:域名为Pwr—Min_Drop,长度6比特;当服务载频的导频强度小于该门限值,则立即进行切换。 Immediately switched threshold: domain name Pwr-Min_Drop, a length of 6 bits; when the service carrier frequency pilot strength is less than the threshold value, it is immediately switched.

相同业务切换的导频强度差:域名为Pwr一Comp,长度6比特;当相邻载频与服务栽频的导频强度差大于该导频强度差值,且持续时间达到TmiJDrop 时,认为该相邻栽频的业务质量明显好于目前的服务栽频质量,需要向该相邻载频切换。 Guiding the same service switching frequency intensity difference: the domain name Pwr a Comp, a length of 6 bits; when a pilot strength difference between adjacent carrier frequencies and service planted frequency is greater than the pilot strength of the difference frequency, and duration reaches TmiJDrop, considered adjacent planted frequency of service quality significantly better than the current service planted video quality, we need to adjacent carrier frequency switching.

相邻栽频数目:域名为NghbiiNum,长度为8比特;以下记录分别有0或Nghbr一Num个,分别i己录各个相邻栽频的4言息,其中/ e [1, Nghbr—Numj: Adjacent planted Frequency Number: domain name NghbiiNum, 8 bits in length; the following is recorded 0 or Nghbr a Num substituents each respectively i respective adjacent already recorded planted frequency 4 made interest, wherein / e [1, Nghbr-Numj:

Nghbr一Config[i]为物理层配置信息,长度为2比特,OO表示相同配置,01 表示不同配置,其他值保留; Nghbr a Config [i] is configured to the physical layer information, 2-bit, OO represents the same configuration, 01 represents a different configuration, other values ​​are reserved;

Nghbr^FrqJnd[i]为相邻网络使用的频率标识,长度为2比特,OO表示使用相同频率,在多频网中不能设置为该值,留待以后扩展;Ol表示使用不同频率, 其他值保留; Nghbr ^ FrqJnd [i] is the neighbor frequency identification network using a length of 2 bits, OO represents the same frequency can not be set to this value in a multi-frequency network, left to future expansion; Ol represented using different frequencies, other values ​​are reserved ;

如果Nghbi^FrqJnd[i]值为01,则存在以下记录: NghbriFrq[i]为相邻载频的频率值,长度为32比特; If Nghbi ^ FrqJnd [i] value is 01, the following records are present: NghbriFrq [i] is the frequency values ​​adjacent carrier frequencies, a length of 32 bits;

Nghbr_Prog—Ind[i]为节目标识,00表示该相邻栽频与服务栽频为相同节目, Ol表示为不同节目,其他值保留。 Nghbr_Prog-Ind [i] is the program identification, 00 indicates the neighbor planted frequency and service planted frequency of the same program, Ol represented as different programs, other values ​​are reserved.

移动终端的状态包括稳定状态和暂态,其中稳定状态有两种,分别是空闲态和业务态。 State of the mobile terminal comprises the steady state and transient, wherein the steady state, there are two, namely, idle state and operational state. 空闲态指移动终端处于未收看任何广播节目状态,业务态指移动终端正在收看某一广播节目的状态。 Idle state refers to a mobile terminal is not watch any broadcast program status, service status means the mobile terminal is viewing status of a broadcast program. 在这两种状态下,移动终端定时检测相邻频段和服务频段的导频强度,根据导频强度信息,决定是否切换到对应的其它状态上去。 In these two states, the mobile terminal timing detected adjacent bands and service band pilot strength information according to the pilot strength to determine whether to switch to the other state corresponding up.

除上述空闲态和业务态之外的所有状态都是暂态。 All state other than the above-described idle state and operational states are transitory. 当移动终端处于不同暂态时将执行对应的操作,具体操作如下: When the mobile terminal is different from the transient to perform the corresponding operations, as follows:

待切换态:该状态只能由空闲态切换而来,当移动终端处于该状态时,将根据切换信息以及定时器是否超时切换到其他状态; Be switched state: This state can only switch from the idle state when the mobile terminal is in the state, as to whether handover information and the timer times out handover according to another state;

重选状态:移动终端重新选择可用的服务频段; Reselection state: the mobile terminal reselects the service frequency band is available;

更新信息状态:移动终端更新切换信息和相邻频段信息; Update status: the mobile terminal updates the switching information and adjacent bands of information;

更新节目状态:移动终端更新所接收到的节目信息; Update Program Status: the mobile terminal updates the received program information;

节目待切换态:该状态只能由业务态切换而来,当移动终端处于该状态时, 将根据切换信息以及定时器是否超时切换到其他状态;切换状态:移动终端从正在播放的服务频段切换到新的服务频段。 The program to be switched state: This state can only switch from a traffic state, when the mobile terminal is in the state, as to whether handover information and the timer times out handover according to another state; switching state: switching the mobile terminal from a service band being played to a new service band.

本发明涉及的移动终端在处于空闲态和处于业务态时处理流程是不同的, 处于空闲态时移动终端进行切换判断以及处理的流程如图2所示: The mobile terminal according to the present invention relates to treatment while in the idle state and in a service state processes are different, the mobile terminal performs handover determination and the flow of processing in FIG. 2 in the idle state shown:

步骤201:移动终端接收网络侧下发的对应当前服务频段的NFM消息,获取其中的切换信息。 Step 201: Send the network side mobile terminal corresponding to the current service band NFM message, acquires the handover information therein.

步骤202 ~ 203:移动终端将收到的切换信息中的消息序号Nfn^S叫与已存储的切换信息的消息序号Nftr^Seq进行比较,如果两者不匹配,则保存接收的切换信息,如果匹配,则不作任何操作。 Step 202 ~ 203: the mobile terminal handover information in the received message number Nfn ^ S call is compared with the message number Nftr switching information stored ^ Seq, if they do not match, the switching information received is saved, if match, no any operation.

步骤204-205:判断相邻栽频数目Nghbr—Num,如果为0,则跳转执行步骤201,如果不为O,则按照栽频数目建立频段列表。 Step 204-205: Analyzing adjacent planted frequency number Nghbr-Num, if it is 0, the process advances to step 201, if not is O, is established frequency list by the number of plant frequency.

这里,所述频段列表中的每个载频频段i Oe[l, Nghbr—Num]),包含如下信 Here, the frequency band list for each carrier-frequency band i Oe [l, Nghbr-Num]), comprising the letter

息:物理层配置信息Nghbrj:onfig[i]、使用不同频率标识Nghbr—Frqjnd[i]、该栽频频段的频率Nghbr—Frq[i]、节目标识Nghbr—Prog—Ind[i]、该栽频频段的导频强度Nghbr—Pwr[i]、该栽频频段的切换计时器Nghbr一Tmr—Drop[i]。 Information: the physical layer configuration information Nghbrj: onfig [i], using different frequency identification Nghbr-Frqjnd [i], the plant frequency band frequency Nghbr-Frq [i], the program identification Nghbr-Prog-Ind [i], the plant pilot frequency band pilot strength Nghbr-Pwr [i], switch timer the plant-frequency band Nghbr a Tmr-Drop [i].

步骤206:按照Nghbr—Frq[i]所示的频率搜索其导频强度,之后,并行执行步骤207和208。 Step 206: according Nghbr-Frq [i] as shown in the frequency search its pilot strength, after the parallel execution steps 207 and 208.

步骤207:对每个相邻栽频,判断其栽频的导频强度,并根据导频强度进行相应的处理,具体过程如图3所示,包括如下步骤: Step 207: planted frequency for each adjacent determines which plant have a pilot strength, and the corresponding processing according to the pilot strength, the specific procedure shown in Figure 3, comprising the steps of:

步骤207a:在i小于等于Nghbr—Num时,判断第i个相邻栽频的导频强度, 如果其强度小于Pwr_Min—Drop则执行步骤207b ~ 207c,如杲强度大于等于Pwr_Min—Drop且小于Pwr—Drop则执行步骤207d~207g,如果强度大于等于Pwr_Drop且小于Pwr一Add则执行步骤207h〜207i,如果强度大于等于Pwr—Add 则执行步骤207j ~步骤2071; Step 207a: when i less Nghbr-Num, determines the i-th adjacent plant have a pilot strength if the strength is less than Pwr_Min-Drop execute step 207b ~ 207c, as Gao strength greater than or equal Pwr_Min-Drop and less than Pwr -Drop execute step 207d ~ 207g, if the strength of greater than or equal Pwr_Drop and less than Pwr a Add perform step 207h~207i, if the strength of greater than or equal Pwr-Add execute step 207j ~ step 2071;

步骤207b ~ 207c:判断该栽频是否在频段列表中,若是,则从列表中删除该栽频频段及其节目信息;若否,则不作任何操作。 Step 207b ~ 207c: determining whether the plant frequency is in the frequency list, if, from the list to remove the plant-frequency band and the program information; if not, no any operation.

执行完步骤207c后,将i的值加1再返回步骤207a。 After step 207c, the value of i is incremented by 1 and then returns to step 207a. 步骤207d ~ 207e :判断是否已启动该载频频段的切换定时器Nghbr—Tmr一Drop[i],若是,则不作任何搮作;若否,则启动该定时器Nghbr—Tmr一Drop [i]。 Step 207d ~ 207e: determining whether the start switch timer Nghbr-Tmr of the carrier frequency band of a Drop [i], if, not any Li made; if not, then starts the timer Nghbr-Tmr a Drop [i] .

步骤207f~207g:判断该频段的切换定时器NghbrJTmi^Dr叩[i]是否已超时,若是,则从频段列表中清除该栽频频段及其节目信息;若否,则不作任何操作。 Step 207f ~ 207g: Analyzing the band switching timer NghbrJTmi ^ Dr rapping [i] has timed out, if, from the frequency list to clear the plant-frequency band and the program information; if not, no any operation.

执行完步骤207g后,将i的值加l再返回步骤207a。 After executing step 207g, add the values ​​l i again returns to step 207a.

步骤207h ~ 207i :判断是否已启动该栽频频段的切换定时器Nghbr_Tmr—Drop[i],若是,则停止该定时器;若否,则不作任何操作。 Step 207h ~ 207i: determining whether to start the plant-frequency band switching timer Nghbr_Tmr-Drop [i], if yes, stopping the timer; if not, no any operation.

执行完步骤207i后,将i的值加l再返回步骤207a。 After performing step 207i, add the values ​​l i again returns to step 207a.

步骤207j:保存该栽频频段的导频强度Nghbr_Pwr[i]。 Step 207j: Save the plant frequently pilot strength segment Nghbr_Pwr [i].

步骤207k ~ 2071:判断是否相邻栽频的节目标识Nghbr—Pro—Ind[i]=01且未保存该频段节目信息,若是,则搜索并保存该相邻频段节目信息;若否,则不作任何操作。 Step 207k ~ 2071: determining whether an adjacent program identification Nghbr-Pro-Ind [i] planted frequency = 01 and does not save the band program information, if so, the search and save the adjacent bands program information; if not, not as any operation.

执行完步骤2071后,将i的值加l再返回步骤207a。 After step 2071, the value plus l i again returns to step 207a. 在步骤207的执行过程中,i的值从1开始不断增大,当i - Nghbr—Num时, 该步骤处理完毕。 During step 207, the value of i is increasing starting from 1, when the i - Nghbr-Num when the step processed.

步骤208:判断服务载频的导频强度,并根据该导频强度进行相应处理, 其具体过程如图4所示,包括如下步骤: Step 208: Determine the service carrier frequency pilot strength, and the corresponding processing according to the pilot strength, the specific process shown in Figure 4, comprising the steps of:

步骤208a:判断服务载频的导频强度,若小于Pwr_Min_Drop,则执行步骤208b- 208c,若大于等于Pwr—Min_Drop且小于Pwr—Drop,则执行步骤208d〜208h,若大于等于Pwr—Drop,则执行步骤208i〜208j。 Step 208a: determining the service carrier frequency pilot strength, if less than Pwr_Min_Drop, execute step 208b- 208c, if greater than or equal Pwr-Min_Drop and less than Pwr-Drop, execute step 208d~208h, if greater than or equal Pwr-Drop, the to step 208i~208j.

步骤208b〜208c:查找相邻频段的导频信息,找到导频强度最强的频段, 则将该频段切换为服务频段,之后结束步骤208。 Step 208b~208c: Find the adjacent band pilot information, find the pilot strength of the strongest bands, then the band switching for the service frequency band, after the step 208.

步骤208d〜208e:判断是否已启动服务载频的切换定时器SerJTmr—Drop, 若是,则不执行任何操作,若否,则启动该定时器。 Step 208d~208e: determining whether the start switch timer SerJTmr-Drop service carrier frequency, and if so, no action is taken, and if not, then start the timer.

步骤208f-208h:判断服务载频的切换定时器是否已超时,若是,则找到导频强度最强的相邻频段作为服务频段,若否,则不执行任何操作。 Step 208f-208h: Analyzing service carrier frequency handover timer has timed out, if the pilot strength of the strongest adjacent the found frequency as the serving frequency, if not, no action is performed.

执行完步骤208f〜208h后,结束步骤208。 After step 208f~208h, ends at step 208.

步骤208i ~ 208j:判断是否已启动服务栽频的切换定时器Ser—Tmr—Drop, 若是,则停止该定时器,若否,则不执行任何搮作。 Step 208i ~ 208j: determining whether the services are started planted switching timer Ser-Tmr-Drop frequency, if yes, stopping the timer, if no, do nothing Li for. 执行完步骤208i-208j后,结束步骤208。 After performing step 208i-208j, end step 208.

从步骤201 -208为一个工作循环周期,在移动终端处于空闲态时,会反复执行上述循环。 From step 201-208 to a duty cycle, when the mobile terminal is in idle state, repeatedly executes the loop.

当移动终端处于业务态时,进行切换判断及处理流程如图5所示,包括如下步骤: When the mobile terminal in a traffic state, handover is determined and the process flow shown in Figure 5, comprising the steps of:

步骤501:移动终端接收网络侧发送的对应当前服务频段的NFM消息,获取其中的切换信息。 Step 501: switching information corresponding to the current NFM message service band, obtaining wherein the mobile terminal receives the network-side transmission.

步骤502 ~ 503:将收到的切换信息中的消息序号Nfm一S叫与上一次接收的Nfn^Seq进行比较,如果两者不匹配,则保存接收的切换信息,如果匹配则不作任何操作。 Step 502 ~ 503: the switching information in the received message number Nfm a S called once receiving the Nfn ^ Seq compared, if they do not match, the switching information received is stored, if a match is not any operation.

步骤504〜505:判断相邻栽频数目Nghbr一Num,如果为0,则跳转到步骤501,如果不为0,则按照栽频数目形成频段列表。 Step 504~505: determining adjacent planted frequency number Nghbr a the Num, if it is 0, then jumps to step 501, if not zero, is formed frequency list by the number of plant frequency.

这里,所述频段列表中的每个载频频段i ( Ze[l, Nghbr_Numl ),包含如下信 Here, each of the carrier list band frequency band i (Ze [l, Nghbr_Numl), comprising the letter

息:物理层配置信息Nghbr—Config[i]、使用不同频率标识Nghbr—Frqjnd[i]、该载频频段的频率Nghbr—Frq[i]、节目标识Nghbr—Prog—Ind[i]、该载频频段的导频强度Nghbr—Pwr[i]、该栽频频段的切换计时器Nghbr—Tmr_Drcp[i]。 Information: the physical layer configuration information Nghbr-Config [i], using different frequency identification Nghbr-Frqjnd [i], the carrier-frequency band frequency Nghbr-Frq [i], the program identification Nghbr-Prog-Ind [i], the carrier pilot frequency band pilot strength Nghbr-Pwr [i], the plant switching timer Nghbr-Tmr_Drcp-frequency band [i]. 步骤506:按照Nghbr—Frq[i]所示的频率搜索其导频强度。 Step 506: according to the frequency shown in Nghbr-Frq [i] searches its pilot strength. 步骤507:判断服务频段的导频强度,若小于Pwr—Min—Drop,则执行步骤508,若大于等于Pwr—Min—Drop且小于Pwr一Drop则执行步骤509,若大于等于Pwr_Drop则执行步骤510。 Step 507: Determine the service frequency pilot strength, if less than Pwr-Min-Drop, execute step 508, when greater than or equal Pwr-Min-Drop and less than Pwr a Drop execute step 509, if greater than or equal Pwr_Drop perform step 510 .

步骤508:当服务栽频的导频强度小于Pwr—Min_Drop时,相应的判断和处理过程包括:根据用户选择进行频段及节目切换或者自动切换到导频强度最大的相邻栽频及节目,其具体过程如蹈6所示,包括如下步骤: Step 508: When the service planted have a pilot strength is less than Pwr-Min_Drop, appropriate determination and processing comprising: a user selection frequency and program switching or automatically switched to the maximum pilot strength adjacent planting frequency and program according to which In particular processes, such as dance 6, comprising the steps of:

步骤508a:移动终端提示用户即将离开原节目服务区并在屏幕上显示可供选择的节目信息, Step 508a: mobile terminal prompts the user is about to leave the original program service area and display program information are available on the screen,

步骤508b:判断用户是否对节目进行选择,若是,则执行步骤508c,若否, 则执行步骤508d~508g。 Step 508b: determining whether the user of the program selection, if yes, execute step 508C,, if no, Step 508d ~ 508g.

步骤508c:切换到用户选择的频段的节目上,之后结束步骤508。 Step 508c: switch to frequency a program selected by the user, after the step 508.

步骤508d:搜索节目标识Nghbr—Prog—Ind[i]-OO的所有相邻频段,若找到导频强度最强且大于Pwr一Add的相邻频段,则执行步骤508e,若未找到,则执行步骤508f-508g。 Step 508d: all adjacent band search program identification Nghbr-Prog-Ind [i] -OO, if the pilot strength to find the strongest and greater than Pwr a Add the adjacent bands, step 508e, if not found, the step 508f-508g.

步骤508e:将服务频段切换为步骤508d搜索到的频段上,之后结束步骤 Step 508e: the service band switched to step 508d on the search to the band, after completion of step

508。 508.

步骤508f:进一步搜索Nghbr—Prog—Ind[i]-Ol的相邻频,殳,从所有相邻频段中,找到导频强度最强的相邻频段。 Step 508f: adjacent further search Nghbr-Prog-Ind [i] -Ol frequency, Shu, from all neighboring frequency bands, find the pilot strength of the strongest adjacent bands.

步骤508g:将服务频段切换为步骤508f搜索到的频段上,之后结束步骤 Step 508g: service band switched to step 508f on the search to the band, after completion of step

508。 508.

步骤509:当服务导频强度小于Pwr一Drop且大于等于Pwr—Min一Drop时, 具体的判断和切换处理过程如图7所示,包括如下步骤: Step 509: when the service of the pilot strength is less than Pwr a Drop and greater than or equal Pwr-Min a Drop, specific determination and the switching process shown in Figure 7, comprising the steps of:

步骤509a:移动终端检查所有相邻频段中是否已有频段启动切换定时器Nghbr—Tmr—Drop[i],若未找到已启动的定时器,则执行步骤509b ~ 509n,若找到启动的定时器,则执行步骤509o-509p。 Step 509a: the mobile terminal checks if all adjacent bands have band starts switching timer Nghbr-Tmr-Drop [i], if not locate the timer started, execute step 509b ~ 509n, when the found start timer , step 509o-509p.

步骤509b:提示用户即将离开原节目服务区并在屏幕上显示可供选择的节目信息。 Step 509b: prompting the user to leave the original program service area and displays alternative program information on the screen.

步骤509c:判断用户是否对节目进行选择,若是,则执行步骤509d,若否, 则执行步骤509e。 Step 509c: determining whether the user of the program selection, if yes, execute step 509d, if not, the step 509e.

步骤509d:将用户指定节目的频段切换为服务栽频,之后结束步骤509。 Step 509d: the user-specified program band switching service planted frequency, after the step 509. 步骤509e:查找节目标识Nghbr—Prog一Ind(j]-OO的所有相邻频段导频信息, 搜索其中导频强度最强且大于Pwr一Add的频段,若找到满足条件的频段j,则执行步骤5O9f〜509i,若未找到,则执行步骤509j ~ 509n。 步骤509f:启动频段j的切换定时器Nghbr_Tmr_Drop[j〗。 步骤509g:接收频段j的节目数据帧,并緩存。 Step 509e: Find the program identification Nghbr-Prog a Ind (j] all adjacent bands guide -OO audio information, search where the pilot intensity of the strongest and greater than Pwr a Add band, if the condition found in the frequency band j, is executed step 5O9f~509i, if not found, execute step 509j ~ 509n step 509f:. start band j of switching timer Nghbr_Tmr_Drop [j〗 step 509g:. receiving program data frames band j, and the cache.

步骤509h〜509i:判断定时器Nghbr—Tmr—Drop[j]是否已超时,若是,则将频段j切换为服务频段,若否,则不作任何操作。 Step 509h~509i: determining whether the timer Nghbr-Tmr-Drop [j] has expired, and if yes, the frequency band j switched service bands, if not, no any operation. 执行完步骤509i后结束步骤509。 After 509i completion of step 509 executing the steps.

步骤509j:进一步搜索节目标识Nghbi^Progjnd[k]-01的相邻频段,找到所有相邻频段中导频强度最大的频段k。 Step 509j: further search program identification Nghbi ^ Progjnd [k] adjacent bands -01 find all band guide adjacent pilot strength largest band k.

步骤509k:启动频段k的切换定时器Nghbr—Tmr_Drop[k]。 Step 509k: Start frequency of k switching timer Nghbr-Tmr_Drop [k]. 步骤5091:接收频段k的节目数据帧,并緩存。 Step 5091: receiving program data frame frequency k and the cache.

步骤509m〜509n:判断定时器Nghbr—Tmi^Drop[k]是否已超时,若是,则将频段k切换为服务频段,若否,则不作任何操作。 Step 509m~509n: judgment timer Nghbr-Tmi ^ Drop [k] has timed out, if yes, the service frequency band is switched to k, if not, no any operation. 执行完步骤509n后结束步骤509。 After completion of step 509 509n executing the steps.

步骤509o〜509p:判断定时器Nghbr_Tmr—Drop[i]是否已超时,若是,则将频段i切换为服务频段,若否,则不作任何操作。 Step 509o~509p: determining whether the timer Nghbr_Tmr-Drop [i] has expired, and if yes, the service frequency band i is switched to, if not, no any operation. 执行完步骤509p后结束步骤509。 After completion of step 509 509p executing the steps.

步骤510:当服务导频强度大于等于Pwr—Dr叩时,具体的切换处理过程如图8所示,包括如下步骤: Step 510: When a service pilot strength greater than or equal Pwr-Dr call-specific handover process of FIG. 8, comprising the steps of:

步骤510a:在i小于等于Nghbr_Num时,判断第i个相邻频段导频强度和节目标识Nghbr—ProgJnd[i]的值,若强度小于Pwr一Drop,则执行步骤510b ~ 510e;若强度大于等于Pwr—Drop且值为00,则执行步骤510f ~ 510r;若强度大于等于Pwr—Drop且值为01,则执行步骤510s〜510w。 Step 510a: when i less Nghbr_Num, adjacent bands determines the i-th pilot strength and the program identification Nghbr-ProgJnd [i] value, if the strength is less than a Pwr the Drop, execute step 510b ~ 510e; if strength greater than or equal 00 and Pwr-Drop value, step 510f ~ 510r; if the intensity is greater than a value equal to 01 and Pwr-Drop, step 510s~510w.

步骤510b ~ 510c:判断该频段是否存在频段列表中,若是,则从频段列表中删除该频段及其节目信息,若否,则不作任何操作。 Step 510b ~ 510c: Analyzing the band whether there is a frequency list, if, from the frequency band list, remove the band and program information, if not, no any operation.

步骤510d〜510e:判断是否已启动切换定时器Nghbr—Tmr—Drop[i],若是, 则停止该定时器并停止接收该相邻频段数据帧,若否,则不作任何操作。 Step 510d~510e: determining whether the timer has started switching Nghbr-Tmr-Drop [i], if yes, stopping the timer and stops the reception band adjacent data frame, if not, no any operation.

执行完步骤510e后,将i的值加1再返回步骤510a。 After step 510e, the value of i is incremented by 1 and then returns to step 510a. 步骤510f:判断该相邻频段导频强度減去服务频段导频强度的强度差是否大于等于Pwr—Comp,若是,则执行步骤510g〜510n,若否,则执行步骤510o-510r。 Step 510f: determining whether the adjacent bands pilot strength minus the intensity difference between the band guide service pilot strength is greater than or equal Pwr-Comp, if yes, execute step 510g~510n, if not, execute step 510o-510r.

步骤510g:保存导频强度Nghbr—Pwr[i]。 Step 510g: pilot strength stored Nghbr-Pwr [i].

步骤510h-510i:判断是否已启动定时器Nghbr_Tmr—Drop[i],若是,则不作任何操作,若否,则启动该定时器。 Step 510h-510i: determining whether the timer has been started Nghbr_Tmr-Drop [i], if, not performing any operation, if not, the timer is started.

步骤510j:接收该频段的节目数据帧。 Step 510j: receiving program data frame of the band.

步骤510k〜510i:判断该相邻频段节目数据帧号是否大于等于服务频段节目数据帧号,若是,则緩存该相邻频段数据帧,并删除重复节目数据,若否, 则不作任何操作。 Step 510k~510i: determining whether the adjacent segment program data of the frame number is greater than equal to the service-segment program data of the frame number, if yes, cache the band data frame adjacent to and remove duplicate program data, if not, no any operation.

步骤510m〜510n:判断定时器Nghbr一Tmr—Drop[i]是否超时,若是则将该相邻频段栽频切换为服务栽频,若否,则不作任何操作。 Step 510m~510n: a judgment timer Nghbr Tmr-Drop [i] whether a timeout, if the switching frequency of the adjacent bands planted plant service frequency, if not, no any operation.

执行完步骤510n后,将i的值加l再返回步骤510a。 After step 510n, plus the value of l i and then returns to step 510a.

步骤510o〜510p:判断该相邻栽频信息是否已在频段列表中,若是则更新其导频强度Nghbr—Pwr[i],若否,则不作任何操作。 Step 510o~510p: determining whether the plant adjacent frequency band information is already in the list, which is updated if the pilot strength Nghbr-Pwr [i], if not, no any operation.

步骤510q-510r:判断是否已启动定时器NghbrJTmr一Drop[i],若是,则停止该计时器并停止接收该频段的节目数据帧,若否,则不作任何操作。 Step 510q-510r: determining whether a timer is started NghbrJTmr Drop [i], if yes, stopping the timer and stops the program data frames received in the band, if not, no any operation.

执行完步骤510r后,将i的值加1再返回步骤510a。 After step 510r, the value of i is incremented by 1 and then returns to step 510a.

步骤510s:判断该相邻频段的导频强度是否大于等于Pwr一Add,若否,则执行步骤510t~510u,若是,则执行步骤510v~510w。 Step 510s: determining whether the pilot strength adjacent bands is greater than equal to a Pwr Add, if not, execute step 510t ~ 510u, if yes, execute step 510v ~ 510w.

步骤510t〜510u:判断是否已启动计时器Nghbr—Tmr_Drop[i],若是,则停止该计时器并停止接收该相邻频段的节目数据帧,若否则不作任何操作。 Step 510t~510u: determining whether the timer has started Nghbr-Tmr_Drop [i], if yes, stopping the timer and the program stops receiving the data frame adjacent frequency bands, or if no action.

步骤510v〜510w:判断是否已保存该相邻频段节目信息,若是,则不作任何操作,若否,则搜索并保存该相邻频段的节目信息。 Step 510v~510w: determine whether the program has saved the adjacent band information, and if so, not for nothing, if not, the program information search and save the adjacent band.

执行完步骤510w后,将i的值加l再返回步骤510a。 After step 510w, plus the value of l i and then returns to step 510a.

在步骤510的执行过程中,i的值从l开始不断增大,当"Nghbr一Num后,步骤510处理完毕。 During step 510, the value of i from l start increasing, when "Nghbr the Num a, step 510 is processed.

步骤511:接收并緩存此次服务栽频脉冲信号的节目内容,并显示在屏幕上。 Step 511: receiving and caching the planting program content service frequency pulse signal and displayed on the screen.

上述步骤501~511为一个工作循环周期,当移动终端处于业务态时,反复执行上述工作循环。 The above-described steps 501 to 511 to a duty cycle, when the mobile terminal in a traffic state, the above-mentioned work cycle is repeated.

当移动终端处于空闲态时,移动终端各状态之间的切换过程如图9所示, 具体包括: When the mobile terminal is in idle state, the state switching process between the mobile terminal 9, comprises:

当移动终端处于空闲态且接收到的Nfh^S叫有变化或相邻导频强度大于等于Pwr一Add时,移动终端会从空闲态切换到更新信息状态,如标号卯l所示; When the mobile terminal is in idle state and receives the call change Nfh ^ S or neighboring pilot strength not less than a Pwr Add, the mobile terminal switches from the idle state to the state update information, as indicated by reference numeral L d;

当移动终端处于空闲态且相邻导频强度小于Pwr—Drop或服务导频强度小于Pwr_Drop时,移动终端会从空闲态切换到待切换态,如标号卯2所示; When the mobile terminal is in idle state and the adjacent pilot strength is less than or service Pwr-Drop pilot strength is less than Pwr_Drop, the mobile terminal switches to be switched from the idle state to state, as shown in reference numeral d 2;

当移动终端处于空闲态且用户选定节目开始收看时,移动终端会从空闲态切换到业务态,如标号903所示; When the mobile terminal is in idle state and start watching a program selected by a user, the mobile terminal can switch from the idle state to the operational state, as shown in reference numeral 903;

处于待切换态的移动终端,当服务频段的切换定时器超时或服务频段的导频强度小于Pwr_Min—Drop时,会从待切换态切换到重选状态,如标号904所示; The mobile terminal is to be switched state, the switching frequency when the service timer expires or a service band pilot strength is less than Pwr_Min-Drop, switches from state to be switched to the re-selection state, as shown in reference numeral 904;

处于待切换态的移动终端,当服务频段的导频强度大于等于Pwr—Drop或相邻频段的导频强度大于等于Pwr_Drop时,会从待切换态切换到空闲态,如标号905所示; The mobile terminal is to be switched state, when the service guide band pilot strength of greater than or equal Pwr-Drop adjacent bands pilot strength greater than or equal Pwr_Drop, switches from state to be switched to the idle state, as shown in reference numeral 905;

处于待切换态的移动终端,当服务频段的切换定时器超时或服务频段的导频强度小于Pwr—Min—Drop时,会从待切换态切换到重选状态,如标号卯6所 The mobile terminal is to be switched state, when the band switching the service guide or service timer expires band pilot strength is less than Pwr-Min-Drop, switches from switching state to be re-selection state, as indicated at d 6

示; Shown;

处于重选状态的移动终端,当服务频段选择完毕时,会从重选状态切换到 Reselection in a mobile terminal state, when the service band selection is complete, a selected state to a heavy

更新信息状态,如标号907所示; Update status information, as shown at 907;

处于更新信息状态的移动终端,当切换信息和相邻频段信息更新完毕时, 会从更新信息状态切换到更新节目状态,如标号908所示; Update information in the mobile terminal status, when the switching information and the updated information adjacent bands, it switches from the state update information to update the program state, as shown in reference numeral 908;

处于更新节目状态的移动终端,当节目信息更新完毕时,会从更新节目状态切换到空闲态,如标号卯9所示; In the mobile terminal status update program, when the program information is updated, it updates the program switches from the idle state to state, as shown in reference numeral 9 d;

处于业务态的移动终端,当用户结束收看时,会从业务态切换到重选状态, 如标号910所示。 The mobile terminal in a traffic state, when the user finishes viewing, switches from the operational state to the re-selection state, as shown in reference numeral 910.

当移动终端处于业务态时,移动终端各状态之间的切换过程如图IO所示, 具体包括: When the mobile terminal in a traffic state, the switching process between the state of the mobile terminal shown in FIG IO, comprises:

处于业务态的移动终端,当服务导频强度小于Pwr_Drop时,会从业务态切换到节目待切换态;如果相邻导频播放相同节目时,则当相邻导频和服务导频的强度差大于等于Pwr_Comp并且服务导频强度大于等于Pwr—Drop时,从业务态切换到节目待切换态,如标号1001所示; The mobile terminal in a traffic state, when the pilot strength is less than the service Pwr_Drop, switches from the operational state to be switched to the program state; if the adjacent pilot play the same program, when the intensity of the adjacent pilot services and pilot difference when services and greater than or equal Pwr_Comp pilot strength greater than or equal Pwr-Drop, traffic is switched from the state to be switched to the program state, as shown in reference numeral 1001;

处于业务态的移动终端,当接收到的Nfm一Seq有变化时,会从业务态切换到更新信息状态;当相邻导频强度大于等于Pwr—Add或小于Pwr—Drop时,会从业务态切换到更新信息状态,如标号1002所示; The mobile terminal in a traffic state, when Nfm Seq received a change, from the service state switches to the state update information; when adjacent pilot strength greater than or equal to less than Pwr-Add Pwr-Drop, the business will be from state switched to the state update information, as shown at 1002;

以下三种情况,处于节目待切换态的移动终端会从节目待切换态切换到更新信息状态,如标号1003所示: The following three cases, the mobile terminal is in a program state to be switched from the program will be switched to the switching state update information, as shown in reference numeral 1003:

a、 如杲待切换的频段播放相同的节目,当相邻导频和服务导频的强度差小于Pwr—Comp且服务导频强度〉-Pwr—Drop时; Same frequency band broadcast program a, Gao as to be switched, when the adjacent guide pilot strength and pilot services is less than Pwr-Comp pilot strength and service> -Pwr-Drop time;

b、 当待切换的相邻导频强度小于Pwi^Drop时; b, to be switched when the adjacent guide pilot strength is less than Pwi ^ Drop;

c、 当服务导频强度大于等于Pwr一Drop时; c, when the service is greater than the pilot strength Pwr equals a Drop;

处于节目待切换态的移动终端,如果切换定时器超时或在切换定时器维持阶段,服务导频强度小于Pwr—Min一Drop时,会从节目待切换态切换到切换状态,如标号1004所示; The program state to be switched in a mobile terminal, if the timer expires or a switch in the maintenance phase switching timer, service pilot strength is less than the Drop a Pwr-Min, will be switched to the switching state of the switching state from the program, as shown in reference numeral 1004 ;

处于切换态的移动终端,当已经完成服务频_〖殳的切换后,从切换状态切换到更新信息状态,如标号1005所示; The mobile terminal in handoff state, when the handover has been completed _ 〖Shu service frequency, switching from the switching state to the state update information, as shown in reference numeral 1005;

处于更新信息状态的移动终端,当切换信息及相邻频段信息更新完毕后, 会从更新信息状态切换到更新节目状态,如标号1006所示; In the mobile terminal updates the state information, when the adjacent band information and switching information updated, update information is switched from the program state to the update, as shown in reference numeral 1006;

处于更新节目状态的移动终端,当节目信息更新完毕后,会从更新节目状态切换到业务态,如标号1007所示;处于业务态的移动终端,当用户结束收看时,会从业务态切换到重选状态, Updating the program in the mobile terminal state, when the program information is updated, update the program switches from the operational state to a state, as shown in reference numeral 1007; service state in the mobile terminal, when the user finishes viewing, switches from the operational state to re-election state,

如标号1008所示。 As shown in reference numeral 1008.

以上所述,仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围。 The above are only preferred embodiments of the present invention but are not intended to limit the scope of the present invention.

Claims (9)

1、一种数字电视广播多频网中移动终端进行业务切换的方法,其特征在于,网络侧向空闲态的移动终端发送切换信息;所述切换信息包括:可用服务频段门限、不可用服务频段门限、立即切换门限、相同业务切换的导频强度差、切换延迟时长和相邻频段信息;移动终端在服务频段节目脉冲信号的间隔内接收切换信息,建立或更新频段列表,分别对服务频段载频和相邻频段载频进行处理,之后再接收并缓存此次服务频段载频脉冲信号的节目内容,并删除过时的内容;所述对相邻频段载频进行处理包括:从i=1到i的值等于相邻频段载频数目,对每个i判断第i个相邻频段载频的导频强度:如果导频强度小于立即切换门限,则判断该相邻频段是否在频段列表中,如果在频段列表中,则从频段列表中清除该相邻频段载频及其节目信息,否则不作任何操作;如 1, a digital television broadcast multi-frequency network in a mobile terminal method of service switching, wherein, the mobile terminal network side in an idle status transmitting switching information; the handover information comprises: an available service band threshold, unavailable service band threshold switching threshold Now, the same service switching pilot strength difference, length and adjacent bands information switching delay; mobile terminal receives handover information in the interval service segment program pulse signal, create or update frequency list, each service band carrier frequency and the adjacent carrier frequency band processing, and then, after receiving and caching the program service carrier frequency band of the pulse signal content, and to remove the outdated content; the carrier frequency band adjacent process comprising: i from i = 1 to adjacent bands is equal to the carrier frequency number is determined for each i the i th carrier frequency bands adjacent pilot strength: if the pilot strength is less than the handoff threshold immediately, it is determined whether the frequency band adjacent to the frequency band list, if in the list of bands, bands from the list to clear information about the program and its adjacent carrier frequency band, otherwise no action; as 导频强度大于等于立即切换门限且小于不可用服务门限,则先判断是否已启动该相邻频段载频对应的切换定时器,如未启动,则启动该切换定时器;否则,再判断该相邻频段载频对应的切换定时器是否超时,若超时,则从频段列表中清除该相邻频段载频及其节目信息,若未超时,则不作任何操作;如果导频强度大于等于不可用服务门限且小于可用服务门限,则判断是否已启动该相邻频段载频对应的切换定时器,若是,则停止该定时器,否则不作任何操作;如果导频强度大于等于可用服务门限,则先保存该相邻频段载频的导频强度,再判断是否该相邻频段载频的节目标识表示不同节目内容且未保存该相邻频段载频节目信息,若是,则搜索并保存该相邻频段载频节目信息,否则不作任何操作。 Pilot strength greater than or equal to less than the switching threshold gate immediately unavailable service threshold, it determines whether to start the carrier frequencies adjacent bands corresponding switching timer, are not started, then the handover start timer; otherwise, then the phase determination whether the adjacent bands corresponding to a carrier frequency handover timer expires, if the timeout, the program clears the list from the frequency information of the carrier frequency and its adjacent bands, if not timed out, not performing any operation; if the pilot strength of greater than or equal service is not available threshold and less than the available service threshold, it is determined whether to start the adjacent band carrier frequency corresponding to the switching timer, if yes, stopping the timer, otherwise no action; if the pilot strength is greater than equal to the available service threshold, the first storage the adjacent carrier frequency band pilot strength, and then determines whether or not the program identification band adjacent carrier frequencies represent different program content and does not save the program information carrier frequencies adjacent bands, if so, the search and save the adjacent carrier band frequency program information, or no action.
2、 如权利要求l所述的方法,其特征在于,步骤A中,网络側通过相邻频l殳消息NFM发送切换信息。 2. The method of claim l, wherein, in step A, the network side through the adjacent NFM l Shu message transmission frequency switching information.
3、 如权利要求2所述的方法,其特征在于,所述NFM通过业务指示SI、 或传输参数信令TPS传输。 3. The method as claimed in claim 2, wherein the traffic indication NFM by the SI, or TPS transmission parameter signaling transmission.
4、 如权利要求1所述的方法,其特征在于,所述相邻频段信息进一步包括:相邻频段数目、每个相邻频段的物理层配置信息、频率标识、相邻频段栽频的频率和节目标识。 4. The method as claimed in claim 1, characterized in that the adjacent band information further comprises: the number of adjacent bands, each band adjacent to the physical layer configuration information, identifying the frequency, the frequency band adjacent to the frequency planted and program identification.
5、 根据权利要求l所述的方法,其特征在于,所述对服务频段载频的处理为:判断服务频段载频的导频强度的大小:如果导频强度小于立即切换门限,则查找相邻频段载频的导频信息,选择导频强度最强的频段载频为服务频段载频;如果导频强度大于等于立即切换门限且小于不可用服务门限,则先判断是否已启动服务频段载频对应的切换定时器,如果未启动,则启动该切换定时器; 否则,判断服务频段载频对应的切换定时器是否已超时,若超时,则查找相邻频段栽频的导频信息,选择导频强度最强的频段栽频为服务频段栽频,若未超时,不作任何操作;如果导频强度大于等于不可用服务门限,则判断是否已启动服务频段栽频对应的切换定时器,若已启动,则停止该定时器,否则不作任何操作。 5. The method according to claim l, wherein said carrier frequency band serving for the processing of: determining carrier frequency service band pilot strength size: if the pilot strength is less than the handoff threshold immediately, then search phase o band carrier frequency of pilot information, select the pilot strength of the strongest band carrier frequency service band carrier frequency; if the pilot strength greater than or equal immediately switching threshold and less than the unavailable service threshold, to determine whether to start the service frequency carrier switching frequency corresponding timer, if it is not started, start the timer switch; otherwise, judging whether the service carrier frequency band corresponding switching timer has expired, if the time-out, then look for the pilot plant adjacent bands of frequency information, select the strongest pilot strength for the service frequency band planted plant frequency bands, if not timed out, no action; if the pilot strength is greater than a threshold equal to unavailable service, it is determined whether the service has been started corresponding to the frequency band switching timer planted, if has started, stop the timer, otherwise no action.
6、 一种数字电视广播多频网中移动终端进行业务切换的方法,其特征在于, 网络侧向业务态的移动终端发送切换信息;所述切换信息包括:可用服务频段门限、不可用服务频段门限、立即切换门限、相同业务切换的导频强度差、 切换延迟时长和相邻频段信息;移动终端在服务频段节目脉沖信号的间隔内接收切换信息,分别对服务频段栽频和相邻频段载频进行处理,之后接收并緩存此次服务频^呔栽频脉沖信号的节目内容,并显示在屏幕上;所述对服务频段载频和相邻频段载频的处理进一步包括: 判断服务频段载频的导频强度:如果服务频段栽频的导频强度小于立即切换门限时,则执行如下步骤: Bll、提示用户即将离开原节目服务区,并在屏幕上显示可供选择的节目信息;B12、判断用户是否对节目进行选择,如果是,则切换到用户指定频段的节目 6, a digital television broadcast multi-frequency network in a mobile terminal method of service switching, wherein, the mobile terminal network side service state transmitting switching information; the handover information comprises: an available service band threshold, unavailable service band threshold switching threshold Now, the same service switching pilot strength difference, length and adjacent bands information switching delay; mobile terminal receives handover information in the interval service segment program pulse signal, respectively service bands planted frequency and the adjacent frequency carrier frequency for processing, the receiving buffer of the service frequency and tie ^ planted program content rate pulse signal and displayed on the screen after; the service frequency band carrier frequency and adjacent carrier frequencies process further comprising: determining the carrier frequency band serving pilot strength: If the service frequency pilot plant pilot strength is less than the switching threshold Now, the following steps are performed: Bll, prompting the user to leave the service area of ​​the original program, and for displaying the selected program information on the screen; B12, determining whether the user selected the program, if so, the frequency band is switched to the user-specified program 上,结束当前处理流程,否则,搜索节目标识表示相同节目内容的相邻频段,寻找导频强度最强且大于可用服务门限的相邻频段;B13、判断是否找到导频强度最强且大于可用服务门限的相邻频段,如果找到,则切换到所找到的相邻频段上,否则,进一步搜索节目标识表示不同节目内容的相邻频段,切换到所有相邻频段中导频强度最强的频段上;如果服务频段载频的导频强度大于等于立即切换门限且小于不可用服务门限时,则执行如下步骤:B21、搜索已启动切换定时器的相邻频段,判断是否找到满足条件的相邻频段,如果找到,则判断所找到的相邻频段对应的定时器是否已超时,若是, 则将节目切换到该相邻频段上,结束当前处理流程,否则不作任何操作,结束当前处理流程;如杲未找到,则提示用户即将离开原节目服务区并显示可供选择的节目信 On the end of the current process, otherwise, the search program to identify adjacent bands represent the same program content, look for the strongest pilot strength of adjacent frequency bands available services and greater than a threshold; B13, to determine whether the pilot find the most intense and larger than the available service threshold adjacent bands, if found, then switched to the adjacent bands found, otherwise, the search program to identify further adjacent bands represent different program content, switch to all adjacent frequency bands guide the intensity of the strongest band on; if the service carrier frequency band pilot strength greater than or equal to less than the switching threshold gate immediately unavailable service threshold, the following steps are performed: B21, the search timer is started adjacent to the band switching, it is determined whether the find adjacent satisfying the condition band, if found, it is determined whether the frequency band corresponding to the found adjacent the timer has expired, and if yes, the program is switched to the adjacent bands, ends the current process, otherwise, no action, the current process ends; if Gao is not found, the program prompts the user is about to leave the primary service area and displays alternative program letter 息;B22、判断用户是否对节目进行选择,如果是,则切换到用户指定频段上, 结束当前处理流程,否则,搜索节目标识表示相同节目内容、导频强度最强且大于可用服务门限的相邻频段;B23、判断是否找到表示相同节目内容、导频强度最强且导频强度大于可用服务门限的相邻频^汰,如果找到,则启动所找到的频段对应的切换定时器, 接收并緩存该频段的节目数据帧,结束当前处理流程;否则,进一步搜索节目标识表示不同节目内容的相邻频段,找到所有相邻频段中导频强度最强的一个, 启动所找到的频段对应的切换定时器,接收并緩存该频段的节目数据帧;如果服务频段的导频强度大于等于不可用服务门限时,从i=l到i的值等于相邻频段数貝,对每个i执行如下步骤:B31 、判断第i个相邻频段的导频强度以及该频段的节目标识T:如果导频强度小于不 Interest; B22, determines whether the user of the program selection, if so, switching to a user-specified frequency bands, the end of the current process, otherwise, the search program denote identical program content, the pilot strength of the strongest and greater than the available service threshold phase adjacent bands; B23, determining whether the same program content represents found, and the intensity of the strongest pilot pilot pilot neighboring intensity is greater than a threshold frequency of available services ^ elimination, if found, the found corresponding to the band switching timer is started, and reception the band program cache data frame, the current process ends; otherwise, further searching the program identification adjacent bands represent different program content, to find all the guide band adjacent one of the strongest pilot strength, the band corresponding to the found start switch timer, receiving and buffering the band of the program data frame; frequency band if the pilot strength greater than the service unavailable service threshold equal to, the value of i from i = l to the number of bands equal to the adjacent shell, perform the following steps for each i : B31, adjacent bands determines the i-th pilot strength T and the program identification band: If the pilot strength is not less than 可用服务门限,则先判断该相邻频段是否存在于频段列表中,如果存在,则从列表中清除该相邻频段及其节目信息,如果不存在则转至下一步骤:继续判断是否已启动该相邻频段对应的切换定时器,若已启动, 则停止该定时器并停止接收该相邻频段的节目数据帧;如果导频强度大于等于可用服务门限且节目标识表示相同节目内容,则判断该相邻频段的导频强度减去服务导频的导频强度的强度差是否大于相同业务切换的导频强度差;若大于导频强度差,则先保存该频段的导频强度,再判断是否已启动该相邻频段对应的切换定时器,若未启动,则启动该相邻频段对应的定时器;在已启动该相邻频段对应的定时器的情况下,接收该相邻频段节目数据帧,再判断该相邻频段节目数据帧号是否大于服务频段节目数据帧号,若大于,则緩存该相邻频段节目数据 Available services threshold, to determine the adjacent band exists in the band list, if present, from the list to clear the adjacent bands and program information, and if not then go to the next step: to continue to determine whether to start corresponding to the band of the adjacent switching timer, Ruoyi start, stop, stop the timer and receives the program data of the frame of the adjacent bands; if the pilot strength is greater than a threshold equal to the available services and programs denote identical program content, it is determined guiding the adjacent bands pilot strength minus the difference in intensity of the pilot service pilot strength is greater than the same service switching pilot strength difference; if the difference is greater than the pilot strength, pilot strength is first stored in the band, and then determines has been started corresponding to the band adjacent to the switching timer, if no start, corresponding to the band adjacent to the timer is started; started in the case of the adjacent bands corresponding timer, the receiving program data adjacent bands frame, then the program determines whether the data frame adjacent bands is greater than the number of service-segment program data frame number, if greater than the adjacent bands of the program data cached 帧,删除重复的节目数据帧,若小于,则直接执行下一步骤; 判断该相邻频段对应的定时器是否超时,若超时,则切换到该相邻频段上;若小于等于导频强度差,则判断该相邻频段信息是否已存在于频段列表中, 若是,则更新其导频强度信息;否则直接转至下一步骤;继续判断是否已启动该相邻频段对应的切换定时器,若已启动,则停止该定时器并停止接收该相邻频段的节目数据帧,结束当前处理流程;否则直接结束当前处理流程;如杲导频强度大于等于不可用服务门限且节目标识表示不同节目内容,则进一步判断导频强度是否大于等于可用服务门限,如果大于等于可用服务门限,则判断是否已保存该相邻频段的导频强度信息,若未保存则保存该频段的导频强度信息;如果小于可用服务门限,则判断是否已启动该相邻频^殳对应的切换定时器, 若 Frame, remove duplicate program data frame, if less than the next step directly; determining whether the adjacent bands corresponding timer expires, if the timeout is switched to the adjacent bands; pilot strength if the difference is less than equal to , it is determined whether the information is already present in a band adjacent to the frequency band list, and if yes, update the pilot strength information; otherwise, go to the next step directly; continues to determine whether the start switch corresponding to the band adjacent to the timer, if It started, stopped, stop the timer and receives program data frame adjacent to the band ends the current process; otherwise, ends the current process; Gao the pilot strength is not greater than or equal restricted service door represent different program identification and program content , it is further determined whether the pilot strength is not less than the available service threshold if more than equal to the available service threshold, it is determined whether the stored pilot strength information of the adjacent band, if not stored pilot strength information of the frequency band is stored; if available services is less than the threshold, it is determined whether to start the corresponding adjacent switching frequency ^ Shu timer, if 已启动,则停止该定时器并停止接收该频段的节目数据帧。 Has started, stop the timer and stop the program received data frame of the band.
7、如权利要求6所述的方法,其特征在于,网络侧通过相邻频段消息NFM 发送切换信息。 7. The method as claimed in claim 6, wherein, the network side band message transmitted NFM adjacent switching information.
8、 如权利要求7所述的方法,其特征在于,所述NFM通过业务指示SI、 或传输参数信令TPS传输。 8. A method as claimed in claim 7, wherein the traffic indication NFM by the SI, or TPS transmission parameter signaling transmission.
9、 如权利要求6所述的方法,其特征在于,所述相邻频段信息进一步包括:相邻频段数目、每个相邻频段的物理层配置信息、频率标识、相邻频段栽频的频率和节目标识„ 9. The method according to claim 6, characterized in that the adjacent band information further comprises: the number of adjacent bands, each band adjacent to the physical layer configuration information, identifying the frequency, the frequency band adjacent to the frequency planted and program identification. "
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CN1572123A (en) 2001-08-20 2005-01-26 高通股份有限公司 Method and system for a handoff in a broadcast communication system

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