WO2007124650A1 - Procédé et système de contrôle de l'état de la liaison radio - Google Patents

Procédé et système de contrôle de l'état de la liaison radio Download PDF

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Publication number
WO2007124650A1
WO2007124650A1 PCT/CN2007/000761 CN2007000761W WO2007124650A1 WO 2007124650 A1 WO2007124650 A1 WO 2007124650A1 CN 2007000761 W CN2007000761 W CN 2007000761W WO 2007124650 A1 WO2007124650 A1 WO 2007124650A1
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Prior art keywords
channel
wireless link
quality
predetermined
signal
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English (en)
French (fr)
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Jinlin Zhang
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections

Definitions

  • Radio link state monitoring method and system thereof The present application claims priority to Chinese patent application filed on April 28, 2006, the Chinese Patent Office, Application No. 200610080019.7, and entitled “Wireless Link State Monitoring Method and System” The entire contents of which are incorporated herein by reference.
  • the present invention relates to the field of wireless communication technologies, and in particular, to a wireless link state monitoring method and system thereof. Background technique
  • the third generation mobile communication technology (3G, 3rd Generation) is compared to the first generation analog mobile communication technology and the second generation global mobile communication system (GSM, Global System for Mobile communication), code division multiple access (CDMA, Code Division).
  • GSM Global System for Mobile communication
  • CDMA Code Division Multiple access
  • digital mobile communication technologies such as multiple access, it refers to a new generation mobile communication technology that combines wireless communication with multimedia communication such as the Internet. It can handle a variety of media formats such as images, music, video streaming, etc., providing a variety of information services including web browsing, teleconferencing, and e-commerce.
  • ITU-T International Telecommunication Union-Telecommunication Standards Department
  • the 3rd Generation Partnership Project (3GPP) aims to research, develop and promote standards for 3G development based on GSM mobile communication networks, such as WCDMA, TD-SCDMA, and GSM evolution solutions with enhanced data rates (EDGE, Enhanced Data Rates for GSM Evolution) and more.
  • WCDMA is a typical 3G system.
  • the WCDMA system consists of three parts, namely, the core network (CN, Core Net), the UMTS Terrestrial Radio Access Network (UTRAN), and the User Equipment (UE).
  • the interface between UTRAN and UE is defined as Uu interface.
  • the UTRAN includes a plurality of Radio Network Subsystems (Rs, Radio Network Subsystems) connected to the CN through the Iu interface.
  • An RNS includes a Radio Network Controller (RNC) and one or more base stations (Node B).
  • Node B is connected to the RNC through the Iub interface.
  • Each Node B includes one or more cells.
  • the RNCs in each RNS can exchange information through the Iur interface.
  • the Iur interface can be physically connected directly to the RNC or through an appropriate transport network.
  • the radio resource control (RRC) layer state includes an idle mode (UE Idle Mode) and a connection mode (UTRA RRC Connected Mode), as shown in FIG.
  • the UE does not have any RRC signal connection, and does not occupy the system's wireless channel resources except for the data transmission channels used by paging and broadcasting.
  • an RRC signal connection is established, and an RRC message can be transmitted between the UE and the RNC.
  • the UE will use the system's wireless channel resources. According to the usage status of the wireless channel resources, it can be further subdivided into a UTRAN Registration Area Paging Channel (URA-PCH, UTRAN Registration Area Paging Channel), a Cell Paging Channel (Cell-PCH), and a Cell-Specific Transmission Channel (Cell-DCH). And the cell forward access channel (Cell-FACH) four states.
  • UUA-PCH UTRAN Registration Area Paging Channel
  • Cell-PCH Cell Paging Channel
  • Cell-DCH Cell-Specific Transmission Channel
  • Cell-FACH cell forward access channel
  • the UE in the idle state will respond through the RC connection establishment process; the UE in the URA_PCH and Cell-PCH states will respond through the cell update procedure; the UE in the Cell-DCH state will establish the packet mobility management (PMM, Packet) Mobility Management)
  • PMM Packet Mobility Management
  • RAN Radio Access Network
  • the goal of the work project is to improve the number of online users of the group service.
  • the work item is proposed because, for some services, the business flow model is intermittent data transmission.
  • the number of data interruptions is very large, such as web browsing services, generally downloading web pages (with data transmission). Alternate with browsing the web (no data transfer);
  • These businesses require long periods of sporadic data transmission.
  • For these services if the same state is always maintained, that is, even if resources are allocated for the service even when there is no data transmission, it will cause a great waste of system resources; if the connection is established at the beginning of data transmission, the data transmission Releasing the connection at the end will result in frequent establishment and connection of the link, which increases the load on the system control and increases the delay in data transmission.
  • the goal of the permanent online work item is to enable the UE to remain in the Cell-DCH state of the connected mode for a long time during idle time without data transmission, while reducing the consumption of air interface resources.
  • the uplink dedicated physical control channel DPCCH, Dedicated Physical Control Channel
  • DPCCH Dedicated Physical Control Channel
  • an existing solution is to periodically perform uplink DPCCH transmission even if the UE does not use data transmission. Since the wireless link state monitoring method according to the existing system determines that the wireless link is out of synchronization if the signal quality does not meet the requirements in a short period of time, the idle time is often short in order not to affect the wireless link state monitoring. Since the length of the idle time is limited, the savings on air interface resources are also limited.
  • Another existing solution is to not perform wireless link state monitoring during idle time, when the time interval of data transmissions that need to be transmitted is long (into the idle state M booth, the uplink DPCCH is transmitted until new data is needed). At the time of transmission, try to recover.
  • the wireless link status is not monitored during idle time, one of the data transmitting and receiving parties may be interrupted due to an error in signaling transmission and the other party does not know. Therefore, in the case where the idle time is long The uninterrupted party will occupy the processing resources for a long time, resulting in waste of system resources.
  • Embodiments of the present invention provide a wireless link state monitoring method and system thereof, which enable effective monitoring of a wireless link state in an idle time.
  • An embodiment of the present invention provides a radio link state monitoring method, including the following steps: After a radio link enters an idle state, the first device starts a first channel transmission signal at a predetermined time;
  • the second device receives a signal transmitted through the first channel, and detects the first signal The quality of the track, when the shield of the first channel is detected to be better than the predetermined first threshold, the second channel transmit signal is activated;
  • Another method for monitoring a radio link state includes the following steps: after a radio link enters an idle state, the first device periodically starts the first channel transmit signal in a predetermined first period;
  • the second device receives the signal transmitted by the first channel, and periodically detects the quality of the first channel in a predetermined second period, if the quality of the first channel is better than the first gate P ⁇ If the number of times exceeds a predetermined number of times, it is determined that the wireless link is normal, otherwise, it is determined that the wireless link is out of synchronization.
  • the embodiment of the invention further provides a wireless link state monitoring system, which has a first device and a second device connected by a wireless link;
  • the first device includes:
  • a first transmitting module configured to start, by the first channel, at at least one predetermined time after the idle time is entered, to send a signal to the second device;
  • a first receiving module configured to receive a signal sent by the second device by using a second channel, and detect a quality of the second channel within a first predetermined duration of the first predetermined duration timer;
  • a first determining module configured to determine whether the wireless link is normal
  • the second device includes:
  • a second receiving module configured to receive a signal sent by the first transmitting module by using the first channel, and detect a shield of the first channel
  • a second transmitting module configured to start a second channel transmission after the second receiving module detects that the quality of the first channel exceeds a predetermined first threshold
  • the first determining module determines that the wireless link is normal, Otherwise it is determined that the wireless link is out of synchronization.
  • the Node B and the UE stop monitoring the radio link, and the Node B starts the downlink channel transmission at a predetermined time, and the UE detects the quality of the downlink channel transmission.
  • the UE detects the quality of the downlink channel transmission.
  • the Node B detects that the quality of the uplink channel exceeds a preset threshold within a predetermined duration, determining that the wireless link is normal, otherwise determining the wireless link Out-of-synchronization, so that the Node B can effectively monitor the state of the wireless link in idle time, so that a longer idle time can be maintained, thereby greatly saving air interface resources.
  • the prior art avoids the occupation of processing resources for a long period of time in the call without interrupting the wireless link state in the case where the idle time is long, thereby reducing the waste of system resources.
  • the UE periodically detects the quality of the downlink channel transmission. If the quality of the downlink channel exceeds the threshold is greater than the preset value, it determines that the radio link is normal. Otherwise, it determines that the radio link is out of synchronization. Therefore, the UE monitors the state of the wireless link in the idle time, and the long idle time can be maintained, so that the quality of the call is saved, the power of the UE is saved, and the user experience is improved.
  • FIG. 2 is a flowchart of a method for monitoring a wireless link state according to a first embodiment of the present invention
  • FIG. 3 is a flowchart of a method for monitoring a wireless link state according to a second embodiment of the present invention.
  • FIG. 4 is a structural diagram of a wireless link state monitoring system according to a third embodiment of the present invention.
  • Fig. 5 is a structural diagram of a radio link state monitoring system according to a fourth embodiment of the present invention. detailed description
  • the first device (UE or Node B) of the monitoring initiator starts the first channel transmission at a predetermined time, and the second device detects the transmission, and determines The shield and state of the wireless link simultaneously initiate the second channel transmission.
  • the first device detects and determines the quality and status of the wireless link based on the second channel transmission.
  • Both parties to the call that have achieved idle time monitor the quality and status of the wireless link.
  • the radio link state monitoring method of the first embodiment of the present invention after entering the idle time, the Node B and the UE connected by the radio link stop monitoring the radio link, and the Node B takes the initiative. Initiate wireless link status monitoring.
  • the specific steps are as follows:
  • Step 201 The Node B starts downlink channel transmission at at least one predetermined time, for example, there are three predetermined moments: after 1.0 seconds of entering the idle time, after 1.2 seconds, after 1.4 seconds, or at a preset fixed time interval.
  • Period T1 periodically initiates downlink channel transmission.
  • Step 202 The UE receives the downlink signal transmitted by the Node B through the downlink channel, and detects the quality of the downlink channel.
  • Step 203 After detecting that the quality of the downlink channel exceeds a preset first threshold, the UE starts transmitting the uplink signal.
  • Step 204 The UE periodically detects the quality of the downlink channel by using the preset second period T2. If the quality of the downlink channel exceeds the first threshold is greater than the preset value, the UE determines that the wireless link is normal. Otherwise, determining the wireless chain. The path is out of synchronization, and the wireless link out-of-synchronization process is initiated, for example, the upper layer reports that the wireless link is out of synchronization, thereby implementing the UE's monitoring of the state of the wireless link in idle time.
  • the T2 is greater than or equal to the interval between the start of the downlink channel transmission, and the start interval of the downlink channel transmission may be long, generally in the order of seconds, so that the power consumption of the Node B and the UE can be reduced while the idleness is minimized. Detect the status of the wireless link.
  • Step 205 The Node B receives the uplink signal sent by the UE, and detects the quality of the uplink channel. If the quality of the uplink channel exceeds the preset second threshold within the first predetermined duration t1, the wireless link is determined to be normal, otherwise The wireless link is out of synchronization and initiates radio link out-of-synchronization processing, such as reporting radio link out-of-synchronization to the upper layer, so that the Node B can effectively monitor the state of the radio link in idle time.
  • Step 206 After determining that the radio link is normal, the Node B sends a signaling indication to the UE to enter the idle time.
  • Step 207 After receiving the signaling indication of entering the idle time, the UE stops transmitting the uplink signal. As shown in FIG. 3, in the radio link state monitoring method of the second embodiment of the present invention, after entering the idle time, the Node B and the UE connected by the radio link stop monitoring the radio link, and the UE initiates the radio.
  • the monitoring of link status is as follows:
  • Step 301 The UE starts an uplink channel to transmit an uplink signal at at least one predetermined time, for example, There are three predetermined moments: after 1.1 seconds of entering the idle time, after 1.7 seconds of the interval, after 2.5 seconds of the interval, or periodically starting the uplink channel transmission at the predetermined time interval first period T1.
  • Step 302 The Node B receives an uplink signal from the UE, and detects the quality of the uplink channel.
  • Step 304 The Node B periodically detects the quality of the uplink channel by using the preset second period T2. If the quality of the uplink channel exceeds the first threshold is greater than the preset value, the wireless link is determined to be normal. Otherwise, the wireless is determined. The link is out of synchronization, and the wireless link out-of-synchronization processing is started, and the Node B is also monitored for the state of the wireless link in idle time.
  • the T2 is greater than or equal to the interval between the start of the uplink channel transmission. Similarly, the start interval of the uplink channel transmission may be long, generally in the order of seconds, so as to minimize the power consumption of the Node B and the UE while idle. Timely detection of the status of the wireless link.
  • Step 305 The UE receives the downlink channel transmission. If it is detected that the quality of the downlink channel exceeds the preset second threshold within the first predetermined duration t1, it determines that the radio link is normal, otherwise determines that the radio link is out of synchronization, and starts the radio. Link out of sync processing.
  • the wireless link state monitoring system in the embodiment of the present invention includes a first device and a second device connected by a wireless link.
  • the first device further includes: a first periodic timer, a first transmitting module, a first predetermined duration timer, a first receiving module, and a first determining module.
  • the first transmitting module is configured to periodically start according to the first period of the first period timer by the first channel after entering the idle time, or start at multiple (at least one) predetermined time, to the first
  • the second device sends a signal
  • the first receiving module is configured to receive a signal sent by the second device by using the second channel, and detect a quality of the second channel within a first predetermined duration of the first predetermined duration timer; For determining whether the wireless link is normal, if the first receiving module detects that the quality of the second channel exceeds a preset second threshold within the first predetermined duration, the first determining module determines that the wireless link is normal, otherwise determines that The wireless link is out of sync.
  • the method further includes: a second period timer, a second receiving module, a second transmitting module, a second predetermined duration timer, and a second determining module.
  • the second receiving module receives the signal sent by the first transmitting module by using the first channel, And periodically detecting the quality of the first channel according to the second period of the second period timer; the second transmitting module is configured to start after the second receiving module detects that the quality of the first channel exceeds a preset first threshold Two channel transmission, and continuing the second channel transmission within a second predetermined duration of the second predetermined duration timer; a second determining module, configured to determine whether the wireless link is normal, if the second receiving module detects the quality of the first channel If the number of times exceeding the first threshold is greater than a preset value, the second determining module determines that the wireless link is normal, otherwise, determines that the wireless link is out of synchronization.
  • the first device in the foregoing embodiment is a Node B, and the second device is a UE; or the first device is a UE, and the second device is a Node B.
  • the radio link state monitoring system structure of the fourth embodiment of the present invention includes a first device and a second device connected by a wireless link.
  • the first device further includes: a first periodic timer, a first transmitting module, a first predetermined duration timer, a first receiving module, and a first determining module.
  • the first transmitting module is configured to periodically start according to the first period of the first period timer by the first channel after entering the idle time, or start at multiple (at least one) predetermined time, to the first
  • the second device sends a signal
  • the first receiving module is configured to receive a signal sent by the second device by using the second channel, and detect a quality of the second channel within a first predetermined duration of the first predetermined duration timer; For determining whether the wireless link is normal, if the first receiving module detects that the quality of the second channel exceeds a preset second threshold within the first predetermined duration, the first determining module determines that the wireless link is normal, otherwise determines that The wireless link is out of sync.
  • the method further includes: a second period timer, a second receiving module, a second transmitting module, and a second determining module.
  • the second receiving module is configured to receive a signal sent by the first transmitting module by using the first channel, and periodically detect the quality of the first channel according to the second period of the second period timer; a transmitting module, configured to start a second channel transmission after the second receiving module detects that the quality of the first channel exceeds a preset first threshold; and the second determining module is configured to determine whether the wireless link is normal, if the second receiving module If it is detected that the number of times the quality of the first channel exceeds the first threshold is greater than a preset value, the second determining module determines that the wireless link is normal, otherwise, determines that the wireless link is out of synchronization.
  • the first determining module instructs the first transmitting module to send a signaling indication that the idle time is entered to the second receiving module; and the second receiving module receives the signaling to enter the idle time. After the indication, the second transmitting module is instructed to stop transmitting the second channel.
  • the first device is a Node B
  • the second device is a UE
  • the first device is a UE
  • the second device is a Node B

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Description

无线链路状态监测方法及其系统 本申请要求于 2006 年 04 月 28 日提交中国专利局、 申请号为 200610080019.7、 发明名称为 "无线链路状态监测方法及其系统" 的中国专 利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及无线通信技术领域, 特别涉及无线链路状态监测方法及其 系统。 背景技术
第三代移动通信技术(3G, 3rd Generation )是相对于第一代模拟制式 移动通信技术和第二代全球移动通信系统( GSM, Global System for Mobile communication )、 码分多址 ( CDMA, Code Division Multiple Access )等数 字移动通信技术而言的, 是指将无线通信与国际互联网等多媒体通信结合 的新一代移动通信技术。 它能够处理图像、 音乐、 视频流等多种媒体形式, 提供包括网页浏览、 电话会议、 电子商务等多种信息服务。
国际电信联盟-电信标准部 ( ITU-T , ITU Telecommunication
Standardization Sector )在 2000 年 5 月确定宽带码分多址 (WCDMA, Wideband Code Division Multiple Access )、 CDMA2000和时分同步码分多址 ( TD-SCDMA, Time Division Synchronous Code Division Multiple Access ) 三大主流无线接口标准, 写入 3G技术指导性文件《2000年国际移动通讯 计划》(简称 IMT-2000 ) 中。
第三代合作伙伴项目 (3GPP, 3rd Generation Partnership Project ) 的宗 旨是研究、 制定和推广以 GSM移动通信网络为基础向 3G发展的标准, 例 如 WCDMA、 TD-SCDMA、增强数据速率的 GSM演进方案( EDGE, Enhanced Data Rates for GSM Evolution )等等。 其中, WCDMA是一个典型的 3G系 统。
WCDMA系统由三部分组成, 即核心网 ( CN, Core Net )、 通用移动通 信系统地面无线接入网 ( UTRAN, UMTS Terrestrial Radio Access Network ) 和用户设备 ( UE, User Equipment )组成。 UTRAN与 UE的接口定义为 Uu 接口。
其中, UTRAN中又包括许多通过 Iu接口连接到 CN的无线网络子系统 ( R S, Radio Network Subsystem )。 一个 RNS 包括一个无线网络控制器 ( RNC, Radio Network Controller )和一个或多个基站( Node B )。 Node B 通过 Iub接口连接到 RNC上。每个 Node B包括一个或多个小区。在 UTRAN 内部, 各 RNS中的 RNC能通过 Iur接口交互信息, Iur接口可以是 RNC之 间物理的直接相连或通过适当的传输网络实现。
在 WCDMA中, 无线资源控制 (RRC, Radio Resource Control )层状 态包括空闲模式( UE Idle Mode )和连接模式( UTRA RRC Connected Mode ), 如图 1所示。
具体地说, 在空闲模式下, UE没有任何的 RRC信号连接, 除了寻呼 ( Paging )和广播(Broadcast )所使用的资料传输通道外, 不占用系统的无 线通道资源。
而在连接模式下,建立了 RRC信号连接,可以在 UE与 RNC之间传输 RRC消息, 在这个状态下, UE将使用系统的无线通道资源。 依据无线通道 资源的使用状况,又可细分为 UTRAN注册区寻呼信道( URA— PCH, UTRAN Registration Area Paging Channel )、 小区寻呼信道 ( Cell— PCH )、 小区专用传 输信道(Cell— DCH )和小区前向接入信道(Cell— FACH ) 四种状态。
空闲状态下的 UE, 将通过 R C 连接建立过程响应; URA_PCH和 Cell—PCH状态下的 UE, 将通过小区更新过程响应; Cell— DCH状态下的 UE, 将通过建立包移动性管理(PMM, Packet Mobility Management )连接 过程响应;在 Cell— FACH状态下, 系统知道 UE位置时向 UE传输的控制信 息或短 UE数据包。
在 3GPP无线接入网络( RAN, Radio Access Network ) 29次会议上, 批准成立了一个永久在线的工作项目, 该工作项目希望达成的目标是: 提 高分組业务在线用户的数目。
提出该工作项目, 是由于对于某些业务, 其业务流模型是数据断续发 送, 在一次业务过程中, 数据断续的次数非常多, 比如网页浏览业务, 一 般是下载网页 (有数据传输)和浏览网页 (无数据传输) 交替进行; 还有 些业务需要长时间的零星数据传输。 对于这些业务, 如果始终都维持同样 的状态, 也就是说即使在没有数据传输时也为该业务分配资源, 那么将造 成系统资源的极大浪费; 如果在数据传输开始时建立连接, 在数据传输结 束时释放连接, 那么将导致频繁地建立和鋒放连接链路, 加重了系统控制 的负荷, 也增加了数据传输的时延。
永久在线的工作项目的目标是, 使 UE在没有数据发送的空闲时间内, 能长时间地保持在连接模式的 Cell— DCH状态, 同时减少对空口资源的消 耗。 然而, 在现有的 WCDMA协议中, 当 UE处于 Cell—DCH状态时, 上 行的专用物理控制信道( DPCCH, Dedicated Physical Control Channel )一定 会有信令传输, 这样就会对其他 UE 带来上行干扰, 使得处于连接模式的 UE数目受到限制。
为了达到永久在线的工作项目的目标,现有的一种方案是即使 UE没用 数据传输,仍然要周期性地进行上行 DPCCH发射。 由于根据现有系统的无 线链路状态监测方法, 如果在一个很短周期内信号质量达不到要求就判定 无线链路失步, 所以为了不影响无线链路状态监测, 空闲时间往往很短。 由于空闲时间的长度受限, 因此对空口资源的节省也艮有限。
现有的另一种方案是在空闲时间不进行无线链路状态监测, 当两次需 要传输的数据传输的时间间隔较长时(进入空闲态 M亭止上行 DPCCH发射, 直到有新的数据需要传输时再尝试恢复。 但是, 由于在空闲时间不监测无 线链路状态, 可能由于信令传输的错误导致数据收发双方中一方中断而另 一方并不知道, 因此, 在空闲时间比较长的情况下, 没有中断的一方将较 长时间的占用处理资源, 造成系统资源的浪费。 发明内容
本发明实施例提供一种无线链路状态监测方法及其系统, 使得可以对 处于空闲时间的无线链路状态进行有效地监测。
本发明实施例提供一种无线链路状态监测方法, 包括以下步骤: 无线链路进入空闲状态后, 第一设备在预定时刻启动第一信道发射信 号;
所述第二设备接收通过所述第一信道发射的信号, 并检测所述第一信 道的质量, 当检测到第一信道的盾量优于预定的第一门限值后启动第二信 道发射信号;
所述第一设备接收所述第二设备通过所述第二信道发射的信号, 如果 在第一预定时长内检测到第二信道的质量优于预定的第二门限值, 则判定 所述无线链路正常, 否则判定该无线链路失步。
本发明实施例提供的另一种无线链路状态监测方法, 包括以下步骤: 无线链路进入空闲状态后, 第一设备以预定的第一周期周期性地启动 所述第一信道发射信号;
第二设备接收通过所述第一信道发射的信号, 并以预定的第二周期周 期性地检测所述第一信道的质量, 若所述第一信道的质量优于所述第一门 P艮值的次数超过预定次数, 则判定所述无线链路正常, 否则, 判定该无线 链路失步。
本发明实施例还提供一种无线链路状态监测系统, 具有通过无线链路 连接的第一设备和第二设备;
所述第一设备包括:
第一预定时长定时器;
第一发射模块, 用于在进入空闲时间后, 通过第一信道在至少一个预 定时刻启动, 向所述第二设备发送信号;
第一接收模块, 用于接收所述第二设备通过第二信道发来的信号, 并 在所述第一预定时长定时器的第一预定时长内检测所述第二信道的质量; 以及
第一判定模块, 用于判定所述无线链路是否正常;
所述第二设备包括:
第二接收模块, 用于接收所述第一发射模块通过所述第一信道发来的 信号, 并检测该第一信道的盾量;
第二发射模块, 用于在所述第二接收模块检测到所述第一信道的质量 超过预定的第一门限后启动第二信道发射;
如果在所述第一预定时长内所述第一接收模块检测到所述第二信道的 质量超过预定的第二门限, 则所述第一判定模块判定所述无线链路正常, 否则判定该无线链路失步。
本发明实施例的技术方案中,无线链路进入空闲时间后, Node B和 UE 均停止对无线链路的监测, 该 Node B在预定时刻启动下行信道发射, UE 对下行信道发射的质量进行检测, 当检测到下行信道的质量超过预设的门 限后启动上行信道发射; 如果 Node B在预定时长内检测到上行信道的质量 超过预设的门限,则判定无线链路正常,否则判定无线链路失步,从而 Node B可以对处于空闲时间的无线链路状态进行有效地的监测,使得可以持续较 长的空闲时间, 也因此大大节省了空口资源。 还避免了现有技术在空闲时 间较长的情况下, 不监测无线链路状态所导致通话中未中断的一方较长时 间的占用处理资源, 从而减少了系统资源的浪费。
另外, UE对下行信道发射的质量进行周期性地检测, 如果下行信道的 质量超过门限的次数大于预设值, 则判定无线链路正常, 否则, 判定无线 链路失步。从而实现了 UE对处于空闲时间的无线链路状态的监测, 由于可 以持续较长的空闲时间 ,使得在保证了通话质量的同时,节省了 UE的电能, 提升了用户体验。 附图说明
图 1是现有技术中 3G网络的 R C状态转换示意图;
图 2是本发明第一实施例的无线链路状态监测方法流程图;
图 3是本发明第二实施例的无线链路状态监测方法流程图;
图 4是本发明第三实施例的无线链路状态监测系统结构图;
图 5是本发明第四实施例的无线链路状态监测系统结构图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本 发明作进一步地详细描述。
本发明实施例提供的一种无线链路状态监测方法和系统, 由监测发起 方第一设备 ( UE或 Node B )在预定时刻启动第一信道发射, 另一方第二设 备检测该发射, 并判定无线链路的盾量和状态, 同时启动第二信道发射。 再由第一设备根据第二信道发射检测并判定无线链路的质量和状态。 实现 了空闲时间的通话双方监测无线链路的质量和状态。 如图 2所示, 本发明第一实施例的无线链路状态监测方法中, 进入空 闲时间后, 以无线链路连接的 Node B和 UE均停止对该无线链路的监测, 由 Node B主动发起无线链路状态监测, 具体步骤如下:
步骤 201 , Node B在至少一个预定时刻启动下行信道发射, 例如有三 个预定时刻: 进入空闲时间的 1.0秒后、 间隔 1.2秒后、 间隔 1.4秒后, 或 者以预设的固定的时间间隔第一周期 T1周期性地启动下行信道发射。
步骤 202, UE接收 Node B通过下行信道发射的下行信号,并检测下行 信道的质量。
步骤 203 ,当 UE检测到下行信道的质量超过预设的第一门限后,启动发 射上行信号。
步驟 204, UE以预设的第二周期 T2周期性地检测下行信道的质量, 如果下行信道的质量超过第一门限的次数大于预设值, 则判定无线链路正 常, 否则, 判定该无线链路失步, 并启动无线链路失步处理, 例如向上层 报告无线链路失步, 从而实现了 UE对处于空闲时间的无线链路状态的监 测。 其中, T2大于等于下行信道发射启动的间隔时间, 而下行信道发射的 启动间隔时间可以很长,一般可为秒量级,从而可以在尽量减少空闲时 Node B和 UE功率消耗的同时, 及时地检测无线链路状态。
步骤 205, Node B接收 UE发射的上行信号, 并检测上行信道的质量, 如果在第一预定时长 tl 内检测到上行信道的质量超过预设的第二门限, 则 判定无线链路正常, 否则判定该无线链路失步, 并启动无线链路失步处理, 例如向上层报告无线链路失步, 从而 Node B可以对处于空闲时间的无线链 路状态进行有效地监测。
步骤 206, Node B判定无线链路正常后,向 UE发送进入空闲时间的信 令指示。
步骤 207, UE收到进入空闲时间的信令指示后, 停止发射上行信号。 如图 3 所示, 本发明第二实施例的无线链路状态监测方法中, 进入空 闲时间后, 以无线链路连接的 Node B和 UE均停止对该无线链路的监测, 由 UE发起无线链路状态的监测, 具体步骤如下:
步骤 301, UE在至少一个预定时刻启动上行信道发射上行信号, 例如 有三个预定时刻: 进入空闲时间的 1.1秒后、 间隔 1.7秒后、 间隔 2.5秒后, 或者以预定的时间间隔第一周期 T1周期性地启动上行信道发射。
步骤 302, Node B接收来自 UE的上行信号, 并检测上行信道的质量。 步骤 303, 当 Node B检测到上行信道的质量超过预设的第一门限后启 动下行信道发射, 持续下行信道发射的时间为第二预设时长 t2。
步驟 304, Node B以预设的第二周期 T2周期性地检测上行信道的质量, 如果上行信道的质量超过第一门限的次数大于预设值, 则判定无线链路正 常,否则,判定该无线链路失步,并启动无线链路失步处理,也实现了 Node B对处于空闲时间的无线链路状态的监测。 其中, T2大于等于上行信道发 射启动的间隔时间, 同样地, 上行信道发射的启动间隔时间可以很长, 一 般可为秒量级,从而可以在尽量减少空闲时 Node B和 UE功率消耗的同时, 及时地检测无线链路状态。
步骤 305, UE接收下行信道发射, 如果在第一预定时长 tl内检测到下 行信道的质量超过预设的第二门限, 则判定无线链路正常, 否则判定该无 线链路失步, 并启动无线链路失步处理。
如图 4所示, 本发明实施例中的无线链路状态监测系统包括通过无线 链路连接的第一设备和第二设备。
其中, 在第一设备中, 还包含: 第一周期定时器、 第一发射模块、 第 一预定时长定时器、 第一接收模块、 第一判定模块。
具体地说, 第一发射模块, 用于在进入空闲时间后, 通过第一信道根 据第一周期定时器的第一周期周期性地启动, 或者在多个 (至少一个)预 定时刻启动, 向第二设备发送信号; 第一接收模块, 用于接收第二设备通 过第二信道发来的信号, 并在第一预定时长定时器的第一预定时长内检测 第二信道的质量; 第一判定模块, 用于判定无线链路是否正常, 如果在第 一预定时长内第一接收模块检测到第二信道的质量超过预设的第二门限, 则第一判定模块判定无线链路正常, 否则判定该无线链路失步。
在第二设备中, 还包含: 第二周期定时器、 第二接收模块、 第二发射 模块、 第二预定时长定时器、 第二判定模块。
具体地说, 第二接收模块接收第一发射模块通过第一信道发来的信号, 并根据第二周期定时器的第二周期周期性地检测第一信道的质量; 第二发 射模块, 用于在第二接收模块检测到第一信道的质量超过预设的第一门限 后启动第二信道发射, 并在第二预定时长定时器的第二预定时长内持续第 二信道发射; 第二判定模块, 用于判定无线链路是否正常, 如果第二接收 模块检测到第一信道的质量超过第一门限的次数大于预设值, 则第二判定 模块判定无线链路正常, 否则, 判定该无线链路失步。
上述实施方式中的第一设备为 Node B, 第二设备为 UE; 或者, 第一设 备为 UE, 第二设备为 Node B。
如图 5 所示, 本发明第四实施例的无线链路状态监测系统结构包括通 过无线链路连接的第一设备和第二设备。
其中, 在第一设备中, 还包含: 第一周期定时器、 第一发射模块、 第 一预定时长定时器、 第一接收模块、 第一判定模块。
具体地说, 第一发射模块, 用于在进入空闲时间后, 通过第一信道根 据第一周期定时器的第一周期周期性地启动, 或者在多个(至少一个)预 定时刻启动, 向第二设备发送信号; 第一接收模块, 用于接收第二设备通 过第二信道发来的信号, 并在第一预定时长定时器的第一预定时长内检测 第二信道的质量; 第一判定模块, 用于判定无线链路是否正常, 如果在第 一预定时长内第一接收模块检测到第二信道的质量超过预设的第二门限, 则第一判定模块判定无线链路正常, 否则判定该无线链路失步。
在第二设备中, 还包含: 第二周期定时器、 第二接收模块、 第二发射 模块、 第二判定模块。
具体地说, 第二接收模块, 用于接收第一发射模块通过第一信道发来 的信号 , 并才艮据第二周期定时器的第二周期周期性地检测第一信道的质量; 第二发射模块, 用于在第二接收模块检测到第一信道的质量超过预设的第 一门限后启动第二信道发射; 第二判定模块, 用于判定无线链路是否正常, 如果第二接收模块检测到第一信道的质量超过第一门限的次数大于预设 值, 则第二判定模块判定无线链路正常, 否则, 判定该无线链路失步。
第一判定模块判定无线链路正常后, 指示第一发射模块向第二接收模 块发送进入空闲时间的信令指示; 第二接收模块收到进入空闲时间的信令 指示后, 指示第二发射模块停止第二信道发射。
同样地, 在上述实施方式中的第一设备为 Node B, 第二设备为 UE; 或 者, 第一设备为 UE, 第二设备为 Node B。
虽然通过参照本发明的具体实施方式, 已经对本发明进行了图示和描 述, 但本领域的普通技术人员应该明白, 而不偏离本发明的精神和范围, 可以进行各种改变和等同替换。

Claims

权 利 要 求
1. 一种无线链路状态监测方法, 其特征在于, 包括以下步驟: 无线链路进入空闲状态后 , 第一设备在预定时刻启动第一信道发射信 所述第二设备接收通过所述第一信道发射的信号, 并检测所述第一信 道的质量, 当检测到第一信道的质量优于预定的第一门限值后启动第二信 道发射信号;
所述第一设备接收所述第二设备通过所述第二信道发射的信号, 并检 测所述第二信道的质量, 如果在第一预定时长内检测到第二信道的质量优 于预定的第二门限值, 则判定所述无线链路正常, 否则判定该无线链路失 步。
2. 根据权利要求 1所述的无线链路状态监测方法, 其特征在于, 进一 步包括:
所述第一设备在预定时刻启动第一信道发射信号之后, 以预定的周期 周期性地启动所述第一信道发射信号。
3. 根据权利要求 1所述的无线链路状态监测方法, 其特征在于, 还包 括以下步驟:
所述第一设备判定无线链路正常后, 向所述第二设备发送所述无线链 路进入空闲状态的信令指示;
所述第二设备收到所述进入空闲状态的信令指示后, 停止所述第二信 道中的信号发射。
4. 根据权利要求 1所述的无线链路状态监测方法, 其特征在于, 当所述第二设备检测到第一信道的质量优于预定的第一门限值后, 持 续通过所述第二信道发射信号。
5. 根据权利要求 1所述的无线链路状态监测方法, 其特征在于, 所述 第一设备为基站, 所述第二设备为用户设备; 或者,
所述第一设备为用户设备, 所述第二设备为基站。
6. 一种无线链路状态监测方法, 其特征在于, 包括以下步骤: 无线链路进入空闲状态后, 第一设备以预定的第一周期周期性地启动 所述第一信道发射信号;
第二设备接收通过所述第一信道发射的信号, 并以预定的第二周期周 期性地检测所述第一信道的质量, 若所述第一信道的质量优于所述第一门 限值的次歡超过预定次数, 则判定所述无线链路正常, 否则, 判定该无线 链路失步。
7. 根据权利要求 6所述的无线链路状态监测方法, 其特征在于, 所述 第二周期大于等于所述第一周期。
8. —种无线链路状态监测系统, 其特征在于, 具有通过无线链路连接 的第一设备和第二设备;
所述第一设备包括:
第一预定时长定时器;
第一发射模块, 用于在进入空闲时间后, 通过第一信道在至少一个预 定时刻启动, 向所述第二设备发送信号;
第一接收模块, 用于接收所述第二设备通过第二信道发来的信号, 并 在所述第一预定时长定时器的第一预定时长内检测所述第二信道的质量; 以及第一判定模块, 用于判定所述无线链路是否正常;
所述第二设备包括:
第二接收模块, 用于接收所述第一发射模块通过所述第一信道发来的 信号, 并检测该第一信道的质量;
第二发射模块, 用于在所述第二接收模块检测到所述第一信道的质量 超过预定的第一门限后启动第二信道发射信号;
如果在所述第一预定时长内所述第一接收模块检测到所述第二信道的 质量超过预定的第二门限, 则所述第一判定模块判定所述无线链路正常, 否则判定该无线链路失步。
9. 根据权利要求 8所述的无线链路状态监测系统, 其特征在于, 所述 第一设备还包含第一周期定时器, 所述第一发射模块根据该第一周期定时 器设定的第一周期周期性地启动第一信道发射信号。
10. 根据权利要求 8 所述的无线链路状态监测系统, 其特征在于, 所 述第二设备还包含第二周期定时器, 所述第二接收模块根据所述第二周期 定时器设定的第二周期周期性地检测所述第一信道的质量; 第二判定模块, 用于判定所述无线链路是否正常;
如果所述笫二接收模块检测到所述第一信道的质量超过所述第一门限 的次数大于预定值, 则所述第二判定模块判定所述无线链路正常, 否则, 判定该无线链路失步。
11. 根据权利要求 8 所述的无线链路状态监测系统, 其特征在于, 所 述第二设备还包括第二预定时长定时器, 所述第二发射模块在所述第二预 定时长定时器设定的第二预定时长内持续在所述第二信道发射信号。
12. 根据权利要求 8所述的无线链路状态监测系统, 其特征在于, 所 述第一判定模块判定无线链路正常后, 指示所述第一发射模块向所述第二 接收模块发送进入空闲时间的信令指示;
所述第二接收模块收到所述进入空闲时间的信令指示后, 指示所述第 二发射模块停止所述第二信道发射信号。
PCT/CN2007/000761 2006-04-28 2007-03-09 Procédé et système de contrôle de l'état de la liaison radio Ceased WO2007124650A1 (fr)

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CN102123436A (zh) * 2010-01-07 2011-07-13 华为技术有限公司 一种用户设备的监测方法和装置
EP2632068B1 (en) * 2012-02-24 2022-01-05 THALES DIS AIS Deutschland GmbH Method of detecting a jamming transmitter affecting a communication user equipment, and system
CN103384382A (zh) * 2012-05-04 2013-11-06 华为技术有限公司 无线链路管理的方法、用户设备和基站
CN103945416A (zh) * 2013-01-17 2014-07-23 中兴通讯股份有限公司 一种多流配置下上报链路状态及配置链路的方法及设备
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CN115914585A (zh) * 2022-11-04 2023-04-04 南京林业大学 一种广播电视卫星传输综合管理系统

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