WO2013182033A1 - 缩短呼叫建立时延的方法及系统 - Google Patents

缩短呼叫建立时延的方法及系统 Download PDF

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Publication number
WO2013182033A1
WO2013182033A1 PCT/CN2013/076699 CN2013076699W WO2013182033A1 WO 2013182033 A1 WO2013182033 A1 WO 2013182033A1 CN 2013076699 W CN2013076699 W CN 2013076699W WO 2013182033 A1 WO2013182033 A1 WO 2013182033A1
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Prior art keywords
user service
tch
service request
serving cell
delay
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PCT/CN2013/076699
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English (en)
French (fr)
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周恩惠
范学锋
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中兴通讯股份有限公司
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Publication of WO2013182033A1 publication Critical patent/WO2013182033A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/52Allocation or scheduling criteria for wireless resources based on load

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a method and system for shortening call setup delay in a call setup process of a Global System for Mobile communications (Global System for Mobile Communications).
  • Global System for Mobile communications Global System for Mobile Communications
  • the terminal accesses the network, it first passes through the channel initial allocation phase, that is, the network allocates a channel for the terminal to transmit signaling.
  • the network may choose to directly allocate a TCH (Traffic Channel) channel to the terminal, and this allocation mode is called a premature allocation mode.
  • the network may also allocate a SDCCH (Standard-alone Dedicated Control Channel) channel to the terminal, and then allocate a TCH channel to the terminal according to specific needs. This allocation mode is called pre-allocation. mode.
  • the current network In the channel initial allocation, the current network often uses the pre-allocation mode.
  • the pre-allocation mode When the pre-allocation mode is used and there is no SDCCH channel currently available, the network directly allocates the TCH channel according to the priority level of the corresponding service request to replace the SDCCH channel. In order to complete the transmission of signaling messages, in practical applications, this method is likely to cause waste of resources, because usually one TCH channel is equivalent to eight SDCCH channels.
  • the SDCCH channel and the TCH channel transmit signaling According to the manner in which the SDCCH channel and the TCH channel transmit signaling, it can be known that the SDCCH channel rate is low and the TCH channel rate is high. A large amount of statistical data shows that when using the premature allocation mode, the end-to-end call setup delay is almost half or less of the same call setup delay when using the pre-allocation mode. Therefore, in the case where the user is demanding in the delay, the premature allocation mode is adopted, that is, the transmission of the TCH channel signaling can shorten the call setup delay and bring significant benefits to the user. At the same time, it will reduce the amount of traffic that the TCH channel itself can carry, increase the risk of network congestion, and ultimately reduce the network capacity.
  • the present invention aims to provide a method and system for shortening call setup delay, in view of the current situation in which the network pre-allocation mode causes call extension to be extended and the premature allocation mode is used to cause network congestion problems.
  • a method for shortening a call setup delay includes:
  • step B When a user service requests access to the network, parsing the user service request, determining whether the user service requested by the user service request is a service that the network desires to shorten the delay, and if yes, proceeding to step C, if not, Deriving a user service request to allocate an independent dedicated control channel SDCCH;
  • step A the busyness value of the TCH of each serving cell is dynamically counted by the base station controller in real time.
  • the busyness of the TCH of the serving cell is the ratio of the number of TCHs activated by the serving cell to the number of TCHs available to the serving cell.
  • the step of determining whether the user service requested by the user service request is a service that is expected to be shortened by the network includes: determining, according to the random access RA information carried in the request channel message of the user service request, whether the user service is a network expected shortening delay Business.
  • the dynamic adjustment threshold ranges from 0 to 90%.
  • a system for shortening call setup delay comprising: a base station controller BSC configured to collect a busy value of a traffic channel TCH of each serving cell in real time;
  • a channel allocation control module configured to parse the user service request to access the network
  • the service request of the user determines whether the user service requested by the user service request is a service that the network expects to shorten the delay, and if yes, continues to determine whether the busy value of the current serving cell is less than a preset dynamic adjustment threshold, and if so, Allocating a TCH for the user service request, and if not, allocating an SDCCH for the user service request.
  • the busyness of the TCH of the serving cell is the ratio of the number of TCHs activated by the serving cell to the number of TCHs available to the serving cell.
  • the channel allocation control module is configured to determine whether the user service is a network that is expected to shorten the delay according to the random access RA information carried in the request channel message of the user service request.
  • the dynamic adjustment threshold ranges from 0 to 90%.
  • the present invention can selectively allocate TCH channels for user services that are expected to shorten the delay according to the busyness of the TCH channel to transmit signaling, and allocate SDCCH channels for other common user services. Therefore, the call setup delay that shortens the corresponding user service is achieved, and the user experience is improved without causing the network congestion.
  • 1 is a schematic flow chart of a conventional channel initialization allocation phase
  • FIG. 2 is a schematic flowchart of a method for shortening a call setup delay according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of an overall framework of a GSM system according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a specific implementation step of a method for shortening a call setup delay according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a system for shortening a call setup delay according to an embodiment of the present invention.
  • the implementation, functional features and advantageous effects of the object of the present invention will be further described below in conjunction with the specific embodiments and the accompanying drawings.
  • a method for shortening a call setup delay includes the following specific steps:
  • step S20 When a user service requests access to the network, parsing the user service request, determining whether the user service is a service that the network desires to shorten the delay, and if yes, proceeding to step S30, otherwise, assigning the dedicated service request to the secondary user service request Control channel SDCCH;
  • S30 Determine whether the busyness value of the TCH channel of the current serving cell is less than a preset dynamic adjustment threshold. If yes, allocate a TCH channel for the secondary service request. Otherwise, allocate an SDCCH channel for the secondary user service request.
  • step A the busyness value of the traffic channel TCH of each serving cell is statistically counted by the base station controller BSC in real time.
  • the BSC is generally responsible for the management and allocation of the radio channels of each cell. Therefore, the TCH channel busyness can also be calculated by the BSC in real time.
  • MS Mobile station
  • BTS Base Transceiver Station
  • BSS Base Station Subsystem
  • HLR Home Location Register
  • AUC Authentication
  • EIR Device Identity Register
  • MSC Mobile Switching Center
  • VLR Visitor Location Register
  • OMC Operaation & Maintenance Center
  • PSTN Public Switched Telephone Network
  • ISDN International Services Digital Network
  • the embodiment of the present invention defines that the TCH channel busyness value of the serving cell is a ratio of the number of TCH channels activated by the corresponding serving cell to the number of TCH channels available to the serving cell.
  • step B the content of the random access (RA) information carried in the request channel message of the user service request is used to determine whether the user service is a service that the network desires to shorten the delay.
  • RA random access
  • the network expects that the service with shortened delay can be different types of services.
  • the service with shortened delay can be different types of services.
  • it can be a voice service, a data service, a short message service, and the like.
  • the calling voice service is selected as a delay shortening object to explain the inventive spirit of the present invention.
  • the NECI New Establishment Cause Indication
  • the service will use the request channel message whose random access information RA content is 0001****, and the RA content in the request channel message of the calling voice service selected in this embodiment is 111***** and 0100*** *Two types of request channel messages with RA content of 111***** may also come from data services. Since there are very few users using the TCH channel for data services compared to voice services, they are negligible.
  • Step 1 Set the NECI bit of the network to 1;
  • Step 2 The BSC collects the TCH channel occupancy of the monthly service cells in real time.
  • the statistics method of the TCH channel occupancy situation provided by the embodiment of the present invention is: when the BSC activates the TCH channel of a certain cell, the BSC increases the number of activated TCH channels by 1; the BSC releases a certain cell each time. When the TCH channel is used, the number of activated TCH channels of the cell is decremented by one. It is not difficult to be understood by those skilled in the art that the implementation of the TCH channel occupancy of the serving cell is not limited to the above method, and the present invention can also be applied by using other known statistical methods;
  • Step 3 After receiving the channel message of the user service request of the user terminal, the BSC checks whether the random access information RA content carried in the request channel message is 111***** or 0100****, if yes, Then go to step 4; otherwise, go to step 6;
  • Step 4 The BSC calculates the TCH channel busyness of the corresponding serving cell according to the TCH channel occupancy of the serving cell where the user terminal is located at the current moment, and then determines whether the TCH channel busyness is less than a preset dynamic adjustment threshold, and if yes, then transfers to Step 5. Otherwise, go to step 6.
  • the dynamic adjustment threshold ranges from 0 to 90%.
  • the dynamic adjustment threshold can also set different thresholds to meet the needs of operators.
  • Step 5 Allocating a TCH channel for the user service request initiated by the user terminal, and ending.
  • the embodiment of the present invention further provides a system for shortening a call setup delay, including: a base station controller BSC100 configured to collect a busy value of a service channel TCH of each serving cell in real time;
  • the channel allocation control module 200 is configured to parse the user service request when the user service requests to access the network, determine whether the user service is a service that the network desires to shorten the delay, and if yes, continue to determine the TCH channel of the current serving cell. Whether the busyness value is less than a preset dynamic adjustment threshold, and if so, assigning a TCH channel to the secondary user service request, otherwise, assigning an SDCCH channel to the secondary user service request.
  • the TCH channel busyness value of the serving cell is a ratio of the number of TCH channels activated by the corresponding serving cell to the number of TCH channels available to the serving cell.
  • the channel allocation control module 200 determines, according to the content of the random access information RA carried in the request channel message of the user service request, whether the user service is a service that the network desires to shorten the delay. For example, the RA content in the request channel message of the calling voice service selected in this embodiment is 111***** and 0100****.
  • the channel allocation control module parses the user service request and determines that the random access information RA carried by the request channel message of the user service request is 111***** or 0100****, the user service is determined to be a network expectation. Short-delayed business.
  • the dynamic adjustment threshold ranges from 0 to 90%.
  • the dynamic adjustment threshold can also be flexibly set through the background parameters, or different thresholds can be set according to different application scenarios to meet the requirements of the operator.
  • the embodiments of the present invention can selectively allocate TCH channels for user services that are expected to shorten the delay in some networks according to the busyness of the TCH channel to transmit signaling, and allocate SDCCH channels for other common user services, thereby The call setup delay that shortens the corresponding user service is achieved, and the user experience is improved, and the beneficial effect of network congestion is not caused.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

一种缩短呼叫建立时延的方法及系统,所述方法包括:A、实时统计各服务小区的业务信道TCH的繁忙度值;B、当有用户业务请求接入网络时,解析该用户业务请求,判断该用户业务请求所请求的用户业务是否为网络期望缩短时延的业务,若是,则转步骤 C,若不是,为所述用户业务请求分配独立专用控制信道SDCCH;以及C、判断当前服务小区的TCH的繁忙度值是否小于预设的动态调整门限,若是,则为所述用户业务请求分配TCH,若不是,为所述用户业务请求分配SDCCH。本发明能够根据TCH信道的繁忙程度有选择地为某些网络期望缩短时延的用户业务分配TCH信道以传输信令,为其他普通用户业务分配SDCCH信道,达到了既缩短相应用户业务的呼叫建立时延,又不引起网络拥塞的有益效果。

Description

缩短呼叫建立时延的方法及系统
技术领域
本发明涉及通信技术领域,具体而言, 涉及 GSM系统( Global System for Mobile communications, 即全球移动通信系统)在呼叫的建立过程中一种缩短 呼叫建立时延的方法及系统。
背景技术
在 GSM系统中, 如图 1所示, 终端在接入网络时, 首先要经过信道初始 化分配阶段, 即网络为终端分配一条信道用于传输信令。
具体地, 网络可以选择直接给该终端分配 TCH(Traffic Channel, 业务信 道)信道, 此种分配方式被称为过早分配模式。 除此之外, 网络也可以先给该 终端分配 SDCCH( Stand-alone Dedicated Control Channel,独立专用控制信道) 信道, 然后再根据具体需要给该终端分配 TCH信道, 此种分配方式被称为预 分配模式。
在信道初始化分配中, 当前网络往往都釆用预分配模式, 当使用预分配 模式、 且当前没有可用的 SDCCH信道时, 网络根据相应业务请求的优先级别 为之直接分配 TCH信道, 以替代 SDCCH信道以完成信令消息的传送, 但在实 际应用当中, 这种方式容易造成资源浪费, 这是因为, 通常一个 TCH信道相 当于八个 SDCCH信道。
根据 SDCCH信道和 TCH信道传输信令的方式可以知道, SDCCH信道速率 低, 而 TCH信道速率高。 大量的统计数据表明, 釆用过早分配模式时, 端到 端的呼叫建立时延几乎是釆用预分配模式时同类呼叫建立时延的一半甚至更 少。 因此,在用户对时延要求苛刻的情况下, 釆用过早分配模式, 即釆用 TCH 信道传输信令可以缩短呼叫建立时延, 给用户带来明显益处。 但同时, 其会 降低 TCH信道本身所能承载的业务量, 增加网络拥塞的风险, 最终减小网络 容量。
为此, 如何权衡两者之间的矛盾, 一方面为用户带来用户体验上的提升, 缩短业务呼叫建立时延, 另一方面不大规模的增加 TCH信道的使用次数, 节 省网络资源, 并控制网络拥塞风险处于一个合理的水平, 便是业界所关注且 需要予以解决的技术问题。
发明内容
针对当前网络釆用预分配模式造成呼叫建立时延长、 而釆用过早分配模 式又易引发网络拥塞问题的现状, 本发明的目的在于提供一种缩短呼叫建立 时延的方法及系统。
为了达到本发明的目的, 本发明釆用以下技术方案实现:
一种缩短呼叫建立时延的方法, 包括:
A、 实时统计各服务小区的业务信道 TCH的繁忙度值;
B、 当有用户业务请求接入网络时, 解析该用户业务请求, 判断该用户业 务请求所请求的用户业务是否为网络期望缩短时延的业务, 若是, 则转步骤 C, 若不是, 为所述用户业务请求分配独立专用控制信道 SDCCH; 以及
C、判断当前服务小区的 TCH的繁忙度值是否小于预设的动态调整门限, 若是, 则为所述用户业务请求分配 TCH, 若不是, 为所述用户业务请求分配
SDCCH。
在步骤 A中, 由基站控制器实时统计各服务小区的 TCH的繁忙度值。 在步骤 A中, 服务小区的 TCH的繁忙度值为该服务小区已激活的 TCH 数目与该服务小区可用的 TCH数目的比值。
判断该用户业务请求所请求的用户业务是否为网络期望缩短时延的业务 的步骤包括: 根据用户业务请求的请示信道消息携带的随机接入 RA信息判 断所述用户业务是否为网络期望缩短时延的业务。
所述动态调整门限的取值范围为 0到 90 %。
一种缩短呼叫建立时延的系统, 包括: 基站控制器 BSC,其设置成实时统计各服务小区的业务信道 TCH的繁忙 度值; 以及
信道分配控制模块, 其设置成当有用户业务请求接入网络时, 解析该用 户业务请求, 判断该用户业务请求所请求的用户业务是否为网络期望缩短时 延的业务, 若是, 则继续判断当前服务小区的 TCH的繁忙度值是否小于预设 的动态调整门限, 若是, 则为所述用户业务请求分配 TCH, 若不是, 为所述 用户业务请求分配 SDCCH。
服务小区的 TCH的繁忙度值为该服务小区已激活的 TCH数目与该服务 小区可用的 TCH数目的比值。
信道分配控制模块是设置成根据用户业务请求的请示信道消息携带的随 机接入 RA信息判断所述用户业务是否为网络期望缩短时延的业务。
所述动态调整门限的取值范围为 0到 90 %。
通过上述本发明的技术方案可以看出,本发明能够根据 TCH信道的繁忙 程度有选择地为某些网络期望缩短时延的用户业务分配 TCH信道以传输信 令, 为其他普通用户业务分配 SDCCH信道, 从而达到了既缩短相应用户业 务的呼叫建立时延, 提高了用户体验, 又不至于引起网络拥塞的有益效果。 附图概述
图 1是传统的信道初始化分配阶段的流程示意图;
图 2本发明实施例提供的一种缩短呼叫建立时延的方法流程示意图; 图 3是本发明实施例涉及的 GSM系统的总体框架示意图。
图 4是本发明实施例提供的缩短呼叫建立时延的方法具体实施步骤的流 程示意图;
图 5本发明实施例提供的一种缩短呼叫建立时延的系统结构示意图。 本发明目的的实现、 功能特点及优异效果, 下面将结合具体实施例以及 附图做进一步的说明。
本发明的较佳实施方式
下面结合附图和具体实施例对本发明所述技术方案作进一步的详细描 述, 以使本领域的技术人员可以更好的理解本发明并能予以实施, 但所举实 施例不作为对本发明的限定。
如图 2所示, 本发明实施例提供的一种缩短呼叫建立时延的方法, 包括如 下具体步骤:
S10、 实时统计各服务小区的业务信道 TCH的繁忙度值;
S20、 当有用户业务请求接入网络时, 解析该用户业务请求, 判断该用户 业务是否为网络期望缩短时延的业务, 若是, 则转步骤 S30, 否则, 为该次用 户业务请求分配独立专用控制信道 SDCCH;
S30、判断当前服务小区的 TCH信道的繁忙度值是否小于预设的动态调整 门限, 若是, 则为该次用户业务请求分配 TCH信道, 否则, 为该次用户业务 请求分配 SDCCH信道。
具体地,在步骤 A中, 由基站控制器 BSC实时统计各服务小区的业务信道 TCH的繁忙度值。
如图 3所示,在 GSM系统的总体框架中, 一般由 BSC负责各小区的无线信 道的管理和分配, 因此 TCH信道繁忙度也可以由 BSC负责实时统计, 在该图 中, 所述 MS ( mobile station )是指移动台, BTS ( Base Transceiver Station ) 是指基站收发信机站, BSS ( Base Station Subsystem )是指基站子系统模块, HLR ( Home Location Register )是指归属位置寄存器, AUC ( Authentication Centre )是指鉴权中心, EIR ( Equipment Identity Register )是指设备标识寄存 器, MSC ( Mobile Switching Center )是指移动交换中心, VLR ( Visitor Location Register )是指拜访位置寄存器, OMC ( Operations & Maintenance Center )是 指操作维护中心, PSTN ( Public Switched Telephone Network )是指公共交换 电话网络, ISDN ( Integrated Services Digital Network )是指综合业务数字网。
具体地, 在步骤 A中, 本发明实施例定义: 服务小区的 TCH信道繁忙度 值为相应服务小区已激活的 TCH信道数目与本服务小区可用的 TCH信道数目 的比值。
具体地,在步骤 B中,根据用户业务请求的请示信道消息携带的随机接入 ( Random Access, RA )信息内容判断该用户业务是否为网络期望缩短时延 的业务。
在实际实施应用当中,网络期望缩短时延的业务可以为不同类型的业务, 例如可以是语音业务, 数据业务, 短消息业务等等。
在本实施例中, 选择主叫语音业务作为时延缩短对象以说明本发明的发 明精神。
根据 3GPP协议 TS44018规范 9丄 8节的描述, 为了使得网络能区分主叫语 音业务和短消息发送业务, 需要将网络的 NECI ( New Establishment Cause Indication, 新建原因指示)比特置 1 , 这样短消息发送业务将使用随机接入信 息 RA内容为 0001****的请示信道消息, 而本实施例选择的主叫语音业务的请 示信道消息中的 RA内容为 111*****和 0100****两种, 其中 RA内容为 111***** 的请示信道消息也可能来自数据业务。 由于和语音业务相比, 使用 TCH信道 进行数据业务的用户非常少, 因此可忽略不计。
如图 4所示,本实施例提供的缩短呼叫建立时延的方法的具体实施步骤如 下:
步骤 1、 将网络的 NECI比特置 1 ;
步骤 2、 BSC实时统计各月良务小区的 TCH信道占用情况;
例如, 本发明实施例提供的一种 TCH信道占用情况的统计方法为: BSC 每次激活某一小区的 TCH信道时, 将该小区已激活的 TCH信道数目加 1 ; BSC 每次释放某一小区的 TCH信道时, 将该小区已激活的 TCH信道数目减 1。 本领 域的技术人员不难得知, 用以统计服务小区 TCH信道占用情况的实施不仅仅 限于上述方法, 其通过釆用其他已知的统计方法同样可以适用本发明;
步骤 3、 BSC每次收到用户终端的用户业务请求的请示信道消息后, 检查 请示信道消息携带的随机接入信息 RA 容是否为 111*****或者 0100**** , 如 果是, 则转入步骤 4; 否则, 转入步骤 6;
步骤 4、 BSC根据当前时刻用户终端所在服务小区的 TCH信道占用情况计 算出该相应服务小区的 TCH信道繁忙度, 然后判断 TCH信道繁忙度是否小于 预设的动态调整门限, 如果是, 则转入步骤 5, 否则, 转入步骤 6。 在本实施 中, 所述动态调整门限的取值范围为 0到 90 % , 当然, 动态调整门限还可以通 置不同的门限值以达到运营商的需求。
步骤 5、 为用户终端发起的用户业务请求分配一条 TCH信道, 结束。 步骤 6、 为用户终端发起的用户业务请求分配一条 SDCCH信道, 结束。 如图 5所示,本发明实施例还提供了一种缩短呼叫建立时延的系统,包括: 基站控制器 BSC100, 其设置成实时统计各服务小区的业务信道 TCH的繁 忙度值; 以及
信道分配控制模块 200、其设置成当有用户业务请求接入网络时, 解析该 用户业务请求, 判断该用户业务是否为网络期望缩短时延的业务, 若是, 则 继续判断当前服务小区的 TCH信道的繁忙度值是否小于预设的动态调整门 限, 若是, 则为该次用户业务请求分配 TCH信道, 否则, 为该次用户业务请 求分配 SDCCH信道。
具体地, 服务小区的 TCH信道繁忙度值为相应服务小区已激活的 TCH信 道数目与本服务小区可用的 TCH信道数目的比值。
具体地,信道分配控制模块 200根据用户业务请求的请示信道消息携带的 随机接入信息 RA内容判断该用户业务是否为网络期望缩短时延的业务。 例 如, 本实施例选择的主叫语音业务的请示信道消息中的 RA 容为 111*****和 0100****两种。 当信道分配控制模块解析用户业务请求, 判断该用户业务请 求的请示信道消息携带的随机接入信息 RA 容为 111*****或 0100****时, 则 判断该用户业务为网络期望缩短时延的业务。
具体地, 动态调整门限的取值范围为 0到 90 %。 当然, 同样地, 动态调整 门限还可以通过后台参数灵活设置, 或者可以由本领域的技术人员根据不同 的应用场景设置不同的门限值以达到运营商的需求。
以上所述仅为本发明的优选实施例, 并非因此限制本发明的专利范围, 凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换, 或直接 或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。
工业实用性
与现有技术相比,本发明实施方式能够根据 TCH信道的繁忙程度有选择 地为某些网络期望缩短时延的用户业务分配 TCH信道以传输信令,为其他普 通用户业务分配 SDCCH信道, 从而达到了既缩短相应用户业务的呼叫建立 时延, 提高了用户体验, 又不至于引起网络拥塞的有益效果。

Claims

权 利 要 求 书
1、 一种缩短呼叫建立时延的方法, 包括:
A、 实时统计各服务小区的业务信道 TCH的繁忙度值;
B、 当有用户业务请求接入网络时, 解析该用户业务请求, 判断该用户业 务请求所请求的用户业务是否为网络期望缩短时延的业务,若是,则转步骤 C, 若不是, 为所述用户业务请求分配独立专用控制信道 SDCCH; 以及
C、 判断当前服务小区的 TCH的繁忙度值是否小于预设的动态调整门限, 若是, 则为所述用户业务请求分配 TCH, 若不是, 为所述用户业务请求分配 SDCCH。
2、 如权利要求 1所述的缩短呼叫建立时延的方法, 其中, 在步骤 A中, 由基站控制器实时统计各服务小区的 TCH的繁忙度值。
3、如权利要求 1或 2所述的缩短呼叫建立时延的方法, 其中, 在步骤 A中, 服务小区的 TCH的繁忙度值为该服务小区已激活的 TCH数目与该服务小区可 用的 TCH数目的比值。
4、 如权利要求 1所述的缩短呼叫建立时延的方法, 其中, 判断该用户业 务请求所请求的用户业务是否为网络期望缩短时延的业务的步骤包括: 根据 用户业务请求的请示信道消息携带的随机接入 RA信息判断所述用户业务是 否为网络期望缩短时延的业务。
5、 如权利要求 1所述的缩短呼叫建立时延的方法, 其中, 所述动态调整 门限的取值范围为 0到 90 %。
6、 一种缩短呼叫建立时延的系统, 包括:
基站控制器 BSC, 其设置成实时统计各服务小区的业务信道 TCH的繁忙 度值; 以及
信道分配控制模块, 其设置成当有用户业务请求接入网络时, 解析该用 户业务请求, 判断该用户业务请求所请求的用户业务是否为网络期望缩短时 延的业务, 若是, 则继续判断当前服务小区的 TCH的繁忙度值是否小于预设 的动态调整门限, 若是, 则为所述用户业务请求分配 TCH, 若不是, 为所述 用户业务请求分配 SDCCH。
7、如权利要求 6所述的缩短呼叫建立时延的系统,其中,服务小区的 TCH 的繁忙度值为该服务小区已激活的 TCH数目与该服务小区可用的 TCH数目的 比值。
8、 如权利要求 6所述的缩短呼叫建立时延的系统, 其中, 信道分配控制 模块是设置成根据用户业务请求的请示信道消息携带的随机接入 RA信息判 断所述用户业务是否为网络期望缩短时延的业务。
9、 如权利要求 6所述的缩短呼叫建立时延的系统, 其中, 所述动态调整 门限的取值范围为 0到 90 %。
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