WO2010003324A1 - 一种无线系统的切换方法、系统、基站和终端 - Google Patents
一种无线系统的切换方法、系统、基站和终端 Download PDFInfo
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- WO2010003324A1 WO2010003324A1 PCT/CN2009/070671 CN2009070671W WO2010003324A1 WO 2010003324 A1 WO2010003324 A1 WO 2010003324A1 CN 2009070671 W CN2009070671 W CN 2009070671W WO 2010003324 A1 WO2010003324 A1 WO 2010003324A1
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- WIPO (PCT)
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- handover
- base station
- terminal
- mode
- switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/34—Reselection control
- H04W36/38—Reselection control by fixed network equipment
Definitions
- the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method, a system, a base station, and a terminal for switching a wireless system. Background technique
- Dynamic frequency access provides new space for growing wireless services.
- the dynamic frequency access is different from the traditional fixed allocation spectrum.
- the sensing node knows that the state of the spectrum around the node is idle, the frequency band can be used to establish communication.
- the QoS Quality of Service
- the base station collects measurement information of the base station itself and the terminal served by the base station in the service range. If the served terminal meets the handover condition, the base station sends a channel switching message to notify the terminal to switch the channel, and then the entire cell works in the The services on the channel are all interrupted, and then the services of the entire cell working on the channel are switched to the target channel, that is, the base station and the terminal in the entire cell are switched to work on the target channel.
- the base station pre-maintains the candidate channel list, so as to quickly switch the service in the base station to the channel with the highest priority among the candidate channels, and resume communication as soon as possible, if the handover is required. Instead of triggering a scan of the switching target channel after the switching condition is met.
- the base station periodically broadcasts a list of candidate channels in the handover message. If the terminal after switching from idle to active cannot find the serving base station on the original working channel, it searches for the candidate channel to implement fast access to the serving base station. If the terminal after transitioning to the active state cannot access the serving base station, the terminal initiates a regular channel scan to find an accessible channel.
- the prior art has at least the following problems: Since all services on the current working channel need to be interrupted in the process of switching the working channel, the QoS of the entire system is greatly affected. And switching the working channel requires the cell to abandon the work in the current working frequency band, which is not conducive to improving the network spectrum utilization rate. Summary of the invention
- the embodiments of the present invention provide a handover method, system, base station, and terminal for a wireless system, so as to reduce the number of handovers of the base station, thereby reducing service interruption of the working channel caused by handover of the base station.
- an embodiment of the present invention provides a method for switching a wireless system, including: a base station collecting handover decision information; determining a handover mode according to the handover decision information, and generating a handover message according to the handover mode; And the switching message is sent to the terminal in the service area of the base station, where the handover message carries the switching mode and the indication information of the target channel that the terminal switches, and the terminal is instructed to switch to the target channel according to the switching mode.
- the embodiment of the present invention further provides a wireless system, including: a base station, configured to collect handover decision information, determine a handover mode according to the handover decision information, determine execution of a handover operation according to the handover mode, and send a handover Sending a message to the terminal in the service area of the base station, the handover message carrying the switching mode and the indication information of the target channel switched by the terminal, indicating that the terminal switches to the target channel according to the switching mode; and the terminal is configured to receive The handover message sent by the base station performs a handover operation according to the handover mode carried by the handover message and the indication information of the target channel that the terminal switches.
- a base station configured to collect handover decision information, determine a handover mode according to the handover decision information, determine execution of a handover operation according to the handover mode, and send a handover Sending a message to the terminal in the service area of the base station, the handover message carrying the switching mode and the indication information of the target channel switched by the terminal, indicating
- the embodiment of the present invention further provides a base station, including: a collection module, configured to collect handover decision information; and a determining module, configured to determine a handover mode according to the handover decision information collected by the collection module, and according to the handover And a message sending module, configured to send the handover message to a terminal in a service area of the base station, where the handover message carries a handover mode determined by the determining module and indication information of a target channel that is switched by the terminal.
- a base station including: a collection module, configured to collect handover decision information; and a determining module, configured to determine a handover mode according to the handover decision information collected by the collection module, and according to the handover
- a message sending module configured to send the handover message to a terminal in a service area of the base station, where the handover message carries a handover mode determined by the determining module and indication information of a target channel that is switched by the terminal.
- the embodiment of the present invention further provides a terminal, including: a message receiving module, configured to receive a handover message sent by a base station, where the handover message carries a handover mode and indication information of a target channel that is switched by the terminal; And a module, configured to perform a switching operation according to the handover message received by the message receiving module.
- the embodiment of the present invention has the following advantages: According to the embodiment of the present invention, the base station collects handover decision information, determines a handover mode according to the collected handover decision information, and determines execution of the handover operation according to the determined handover mode, and
- the handover message sent to the terminal in the service area of the base station carries the indication information of the handover mode and the target channel of the terminal handover, and instructs the terminal to switch to the target channel according to the handover mode.
- the embodiment of the invention reduces the number of handovers of the base station, thereby reducing the service interruption of the working channel caused by the handover of the base station, improving the QoS of the entire system, and improving the handover success rate.
- FIG. 1 is a flowchart of a method for switching a wireless system according to an embodiment of the present invention
- FIG. 2 is a structural diagram of a wireless system according to an embodiment of the present invention.
- FIG. 3 is a structural diagram of a base station according to an embodiment of the present invention.
- FIG. 4 is a structural diagram of a terminal according to an embodiment of the present invention. detailed description
- the embodiment of the present invention provides a method for switching a wireless system.
- the base station collects handover decision information according to an embodiment of the present invention, and determines a handover mode according to the collected handover decision information, and determines execution of the handover operation according to the determined handover mode, and sends the handover operation.
- the handover message of the terminal in the service area of the base station carries the indication information of the handover mode and the target channel of the terminal handover, and instructs the terminal to switch to the target channel according to the handover mode, thereby reducing the number of handovers of the base station, thereby reducing the handover caused by the base station.
- the service interruption of the working channel improves the QoS of the entire system, improves the spectrum utilization of the network, and reduces the failure of the terminal handover.
- FIG. 1 it is a flowchart of a method for switching a wireless system according to an embodiment of the present invention, which specifically includes the following steps:
- Step S101 The base station collects handover decision information.
- the handover decision information includes measurement information and/or network side information reported by the terminal in the service area of the base station.
- the measurement information reported by the terminal is obtained by the terminal detecting the working channel of the cell where the terminal is located, including authorized user detection, interference level detection, channel quality detection, and the like.
- the network side information includes the neighbor base stations of the base station, the working channel of the neighbor base station, and the system load condition.
- Step S102 the base station determines whether the handover decision information satisfies the handover trigger condition, and if yes, Then, step S103 is performed. If the handover decision information does not satisfy the handover trigger condition, the base station does not perform the handover operation.
- the handover triggering condition may be that the feedback signal strength or the signal quality of the terminal in the base station service area is significantly decreased, and at least one terminal in the base station service area may feedback and detect the authorized user, or may be at least one terminal in the base station service area.
- the interference level is obviously high, and the load of the base station service area may be too large.
- Step S103 The base station determines a handover mode.
- the switching mode may be divided into a first switching mode and a second switching mode.
- the base station performs different switching operations. For example, when performing the first switching mode, the base station performs a handover operation; when performing the second handover mode, the base station does not perform a handover operation.
- the base station determines whether the handover decision information satisfies the handover mode decision condition, and if yes, determines to perform the first handover mode, and performs step S104; if the handover decision information does not satisfy the handover mode decision Condition, it is determined that the second switching mode is executed, and step S105 is performed.
- the switching mode decision condition may be that the signal strength or the signal quality of the multiple terminals is significantly decreased, or the downlink interference of the authorized user by the base station may be generated.
- Step S104 The base station performs a first handover mode, determines to switch to the target channel, and sends a handover message to all terminals in the base station service area, where the handover message carries the indication information of the handover mode and the target channel of the terminal handover.
- the handover message is a broadcast message indicating that all terminals in the service area of the base station switch to the handover target channel determined by the base station, and the base station also switches to the target channel.
- the target channel may be a candidate channel of the system or a newly detected idle channel of the system.
- the base station and all terminals in the service area of the base station store the data information before the handover in the cache, switch to the handover target channel determined by the base station, and after the agreed delay, the base station and the base station service area All terminals resume communication on the target channel. All terminals in the service area of the base station access the original serving base station that is handed over to the target channel. During the handover process, all terminals in the service area of the base station do not need to perform operations such as ranging, authentication, etc., so that these terminals can quickly resume work on the target channel.
- Step S105 The base station performs the second switching mode, continues to work on the original working channel, determines the terminal that performs the handover operation, determines the working channel of the neighboring base station recommended to the terminal, and sends a handover message to the terminal that performs the handover operation determined by the base station, and interrupts. Communication with these terminals.
- the handover message is a multicast or unicast message, and the terminal that performs the handover operation determined by the base station is notified to perform a handover operation.
- the switch The handover mode indication information in the message carries the target channel that the base station recommends the terminal to switch. After receiving the handover message, the terminal performs a handover operation.
- the base station forwards the stored data information and the communication context before the handover of the terminal that determines the handover operation to the neighbor base station operating on the target channel of the handover.
- the terminal that determines the handover operation obtains uplink and downlink synchronization on the working channel of the neighbor base station recommended by the base station, and implements inter-cell handover.
- the target channel that the base station recommends for the terminal handover is determined according to the handover decision information collected by the base station.
- the base station recommends the neighbor base station working channel of the authorized user working channel detected by the terminal; when the handover decision information is that the base station is overloaded The base station recommends a neighbor base station working channel with a smaller load; when the handover decision information is that the terminal is away from the original base station service area, the base station recommends a neighbor base station working channel in the terminal moving direction of the base station service area.
- the base station determines that the terminal performing the handover operation is determined according to the handover decision information collected by the base station.
- the terminal that performs the handover operation determined by the base station only includes: the terminal that reports the handover decision information; when the handover decision information is that the terminal detects the authorized user
- the terminal that performs the handover operation determined by the base station includes: a terminal that reports the handover decision information and a terminal that is adjacent to the terminal; and when the handover decision information is that the base station is overloaded, the base station determines to achieve load balancing.
- the terminal performing the handover operation includes: a service area of a neighbor base station operating on a target channel recommended by the base station and a terminal within an overlapping range of the base station service area.
- the base station collects the handover decision information, and determines the handover operation according to the collected handover decision information, and carries the handover mode indication information in the handover message sent to the terminal in the service area of the base station, indicating the target channel for the handover of the terminal. Therefore, the entire system can be flexibly handled in the case where the entire system performs the handover operation and the handover operation is performed on some of the terminals, the service interruption on the working channel caused by the handover operation is reduced, the QoS of the entire system is improved, and the spectrum utilization rate of the network is improved. , reducing the situation of terminal switching failure.
- FIG. 2 it is a structural diagram of a radio system according to an embodiment of the present invention, including a base station 21 and a terminal 22.
- the base station 21 is configured to collect handover decision information, and determine a handover mode according to the handover decision information. Determining execution of the handover operation according to the handover mode, and transmitting a handover message to the terminal in the service area of the base station
- the handover message carries the switching mode and the indication information of the target channel switched by the terminal 22, and instructs the terminal 22 to switch to the target channel according to the switching mode;
- the terminal 22 is configured to receive a handover message sent by the base station 21, and perform a handover operation according to the handover mode carried by the handover message and the indication information of the target channel switched by the terminal 22.
- FIG. 3 it is a structural diagram of a base station according to an embodiment of the present invention, including:
- the collecting module 211 is configured to collect handover decision information.
- the determining module 212 is configured to determine a switching mode according to the switching decision information collected by the collecting module 211, and determine an execution of the switching operation according to the switching mode;
- the message sending module 213 is configured to send a handover message to the terminal 22 in the service area of the base station, where the handover message carries the handover mode determined by the determining module 212 and the indication information of the target channel switched by the terminal 22.
- the determining module 212 can include:
- the switching judgment sub-module 2121 is configured to determine whether the handover decision information collected by the collection module 211 meets a handover trigger condition
- the mode determining sub-module 2122 is configured to determine, after the handover determining sub-module 2121 determines that the handover decision information meets the handover trigger condition, whether the handover decision information collected by the collection module 211 meets the handover mode decision condition, and if yes, determine to perform the first handover mode. If the handover decision information collected by the collection module 211 does not satisfy the handover mode decision condition, determining to perform the second handover mode;
- the channel determining sub-module 2123 is configured to determine, after the mode determining sub-module 2122 determines the switching mode, the target channel of the terminal handover in the service area of the base station;
- the handover terminal determining sub-module 2124 is configured to determine, after the mode determination sub-module 2122 determines the handover mode, the terminal that performs the handover.
- the base station may further include: a handover execution module 214, configured to perform a handover operation after the determining module 212 determines the handover mode.
- a handover execution module 214 configured to perform a handover operation after the determining module 212 determines the handover mode.
- the handover execution module 214 can include:
- the first switching mode execution sub-module 2141 is configured to: after the mode determining sub-module 2122 determines to perform the first switching mode, store the data information before the terminal switching served by the base station, and switch to the target channel, where the scheduled time delay is Resume communication on the target channel; a second switching mode execution sub-module 2142, configured to determine, after the mode determining sub-module 2122 determines to perform the second switching mode, the terminal that performs the switching operation, interrupt communication with the terminal that determines the switching operation, and store the determining
- the data information before the handover of the terminal of the handover operation forwards the data information and the communication context before the handover stored by the base station to the neighbor base station working on the target channel that the base station recommends the handover of the terminal.
- FIG. 4 it is a structural diagram of the terminal 22 according to an embodiment of the present invention, including:
- the message receiving module 221 is configured to receive a handover message sent by the base station, where the handover message carries the indication information of the handover mode and the target channel of the terminal handover;
- the handover execution module 222 is configured to perform a handover operation according to the handover mode carried in the handover message received by the message receiving module 221 and the indication information of the target channel of the terminal handover.
- the handover execution module 222 may include: a first handover mode execution sub-module 2221, configured to: when the handover message received by the message receiving module 221 indicates that the terminal performs the first handover mode, switch to the target channel after the scheduled delay, and recover Communication with a base station switched to a target channel.
- the handover execution module 222 may include: a second handover mode execution sub-module 2222, configured to: when the handover message received by the message receiving module 221 indicates that the terminal performs the second handover mode, obtain synchronization on the working channel of the neighbor base station recommended by the base station. And accessing the neighbor base station to resume communication.
- the present invention can be implemented by hardware, or can be implemented by means of software plus necessary general hardware platform, and the technical solution of the present invention. It can be embodied in the form of a software product that can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including a number of instructions for making a computer device (may It is a personal computer, a server, or a network device, etc.) that performs the methods described in various embodiments of the present invention.
- a non-volatile storage medium which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.
- a computer device may It is a personal computer, a server, or a network device, etc.
- modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or the corresponding changes may be located in one or more apparatuses different from the embodiment.
- the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.
Description
一种无线系统的切换方法、 系统、 基站和终端
本申请要求于 2008 年 7 月 10 日提交中国专利局、 申请号为 200810132839.5、 发明名称为"一种无线系统的切换方法、 系统和装置"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
本发明实施例涉及通信技术领域，特别涉及一种无线系统的切换方法、 系 统、 基站和终端。 背景技术
目前无线资源越来越稀缺，新增长的无线业务也越来越多 ,传统的固定分 配频谱的方式已经不能满足日益增长的无线业务的需求。动态频语接入为增长 的无线业务提供了新的空间。 动态频语接入和传统的固定分配频谱的方式不 同，具有感知能力的节点获知该节点周围频谱的状态为空闲时，可以使用该频 段建立通讯。 当出现优先级较高的用户或由于链路质量下降到低于 QoS ( Quality of Service, 服务质量）要求时， 这类具有感知能力的节点切换到其 他可用信道上， 重新建立通讯。
现有技术中 ,基站收集服务范围内该基站自身和该基站所服务的终端的测 量信息，如果所服务的终端满足切换条件，基站发送信道切换消息通知终端切 换信道，这时整个小区工作在该信道上的业务均会中断， 然后整个小区工作在 该信道上的业务均被切换到目标信道上，即整个小区内的基站和终端都切换到 目标信道上工作。
为了减少切换时间， 缩短业务的中断时间， 基站预先维护候选信道列表， 以便在需要切换的情况下，将基站内的业务快速切换到候选信道中优先级最高 的信道上，尽快恢复通讯。 而不是在满足切换条件后才触发切换目标信道的扫 描。
基站在切换消息中周期性地广播候选信道列表。如果从空闲转为活动状态 后的终端不能在原来的工作信道上找到服务基站， 就在候选信道上寻找， 实现 快速接入服务基站。如果转为活动状态后的终端不能接入服务基站， 则该终端 再启动常规信道扫描， 寻找可接入的信道。
在实现本发明的过程中，发明人发现现有技术至少存在以下问题： 由于切 换工作信道的过程中需要中断当前工作信道上的所有业务，因此对整个系统的 QoS有很大的影响。 并且切换工作信道需要小区放弃在当前的工作频段上工 作， 不利于提高网络频谱利用率。 发明内容
本发明实施例提供一种无线系统的切换方法、 系统、基站和终端， 以减少 基站切换的次数， 从而减少因为基站切换造成的工作信道的业务中断。
为达到上述目的，本发明实施例一方面提供一种无线系统的切换方法， 包 括： 基站收集切换判决信息； 根据所述切换判决信息确定切换模式， 并根据所 述切换模式生成切换消息；发送所述切换消息至基站服务区内的终端， 所述切 换消息携带所述切换模式和所述终端切换的目标信道的指示信息，指示所述终 端根据所述切换模式切换到目标信道上。
另一方面， 本发明实施例还提供一种无线系统， 包括： 基站， 用于收集切 换判决信息，根据所述切换判决信息确定切换模式，根据所述切换模式确定切 换操作的执行， 并发送切换消息至基站服务区内的终端， 所述切换消息携带所 述切换模式和所述终端切换的目标信道的指示信息，指示所述终端根据所述切 换模式切换到目标信道上； 终端， 用于接收所述基站发送的切换消息， 根据所 述切换消息携带的切换模式和所述终端切换的目标信道的指示信息执行切换 操作。
再一方面， 本发明实施例还提供一种基站， 包括： 收集模块， 用于收集切 换判决信息； 确定模块， 用于根据所述收集模块收集的切换判决信息确定切换 模式， 并根据所述切换模式生成切换消息； 消息发送模块， 用于发送所述切换 消息至基站服务区内的终端，所述切换消息携带所述确定模块确定的切换模式 和所述终端切换的目标信道的指示信息。
再一方面， 本发明实施例还提供一种终端， 包括： 消息接收模块， 用于接 收基站发送的切换消息，所述切换消息携带切换模式和所述终端切换的目标信 道的指示信息； 切换执行模块， 用于根据所述消息接收模块接收的切换消息执 行切换操作。
与现有技术相比， 本发明实施例具有以下优点： 通过本发明实施例， 基站 收集切换判决信息， 并根据收集的切换判决信息确定切换模式，根据确定的切 换模式确定切换操作的执行，并在发送给基站服务区内的终端的切换消息中携 带切换模式和终端切换的目标信道的指示信息，指示终端根据切换模式切换到 目标信道上。本发明实施例减少了基站切换的次数，从而减少了因为基站切换 造成的工作信道的业务中断， 提高了整个系统的 QoS, 也提高了切换成功率。 附图说明
图 1为本发明实施例无线系统的切换方法的流程图；
图 2为本发明实施例无线系统的结构图；
图 3为本发明实施例基站的结构图；
图 4为本发明实施例终端的结构图。 具体实施方式
本发明实施例提供一种无线系统的切换方法，通过本发明实施例，基站收 集切换判决信息， 并根据收集的切换判决信息确定进行切换模式，根据确定的 切换模式确定切换操作的执行，在发送给基站服务区内的终端的切换消息中携 带切换模式和终端切换的目标信道的指示信息，并指示终端根据切换模式切换 到目标信道上， 减少了基站切换的次数，从而减少了因为基站切换造成的工作 信道的业务中断， 提高了整个系统的 QoS, 提高了网络的频谱利用率， 减少了 终端切换失败的情况。
如图 1所示， 为本发明实施例无线系统的切换方法的流程图， 具体包括以 下步骤：
步骤 S101 , 基站收集切换判决信息。 该切换判决信息包括基站服务区内 的终端上报的测量信息和 /或网络侧信息。 终端上报的测量信息是终端对该终 端所在的小区的工作信道进行检测得到的，包括授权用户检测，干扰水平检测， 信道质量检测等。 网络侧信息包括基站有哪些邻居基站，该邻居基站的工作信 道， 系统负载情况等。
步骤 S102, 基站判断切换判决信息是否满足切换触发条件， 如果满足，
则执行步骤 S103 , 如果该切换判决信息不满足切换触发条件， 则基站不进行 切换操作。该切换触发条件可以为基站服务区内至少有一个终端反馈信号强度 或信号质量明显下降，也可以为基站服务区内至少有一个终端反馈检测出授权 用户，还可以是基站服务区内至少一个终端干扰水平明显偏高，还可以是基站 服务区负载过大等。
步骤 S 103， 基站确定切换模式。
在本发明实施例中，切换模式可以分为第一切换模式和第二切换模式，在 不同的切换模式下，基站进行不同的切换操作。例如：在执行第一切换模式时， 基站进行切换操作； 在执行第二切换模式时， 基站不进行切换操作。
在基站确定切换判决信息满足切换触发条件之后 ,该基站判断切换判决信 息是否满足切换模式判决条件， 如果满足， 则确定执行第一切换模式， 执行步 骤 S104; 如果该切换判决信息不满足切换模式判决条件， 则确定执行第二切 换模式， 执行步骤 S105。 该切换模式判决条件可以为多个终端的信号强度或 信号质量明显下降， 也可以为基站对授权用户产生下行干扰等。
步骤 S104, 基站执行第一切换模式， 确定切换到目标信道， 并向基站服 务区内的所有终端发送切换消息，该切换消息携带切换模式和终端切换的目标 信道的指示信息。该切换消息为广播消息，该切换消息指示基站服务区内的所 有终端切换到基站确定的切换目标信道，该基站也切换到该目标信道。该目标 信道可以是系统的候选信道， 也可以是系统新检测的空闲信道。
在进行切换操作之前，基站和该基站服务区内的所有终端在緩存中存储切 换前的数据信息， 在切换到基站确定的切换目标信道， 并经过约定时延后， 基 站和该基站服务区内的所有终端均在目标信道上恢复通信。该基站服务区内的 所有终端接入切换到目标信道的原服务基站。在切换过程中，该基站服务区内 的所有终端不需要重新进行测距，鉴权等操作， 因此这些终端可以在目标信道 上快速恢复工作。
步骤 S105 , 基站执行第二切换模式， 继续在原工作信道上工作， 确定进 行切换操作的终端，确定向终端推荐的邻居基站的工作信道， 向该基站确定的 进行切换操作的终端发送切换消息， 中断和这些终端的通讯。该切换消息为多 播或单播消息，通知该基站确定的进行切换操作的终端进行切换操作。该切换
消息中的切换模式指示信息携带基站推荐终端切换的目标信道。在接收到该切 换消息之后， 终端执行切换操作。 在终端执行切换操作前， 基站将存储的确定 进行切换操作的终端切换前的数据信息和通讯上下文，转发给在切换的目标信 道上工作的邻居基站。所述确定进行切换操作的终端在该基站推荐的邻居基站 工作信道上获得上下行同步， 实现小区间切换。
其中 ,基站推荐终端切换的目标信道是根据基站收集的切换判决信息确定 的。 当切换判决信息为该基站服务区内的少量终端对授权用户产生上行干扰 时，该基站推荐远离终端检测到的授权用户工作信道的邻居基站工作信道； 当 切换判决信息为该基站负载过大时， 该基站推荐负载较小的邻居基站工作信 道； 当切换判决信息为终端远离原基站服务区时，该基站推荐该基站服务区内 的终端移动方向上的邻居基站工作信道。以上只是基站确定推荐的目标信道的 几种方式，本发明实施例并不局限于此，任何根据基站收集的切换判决信息确 定基站推荐终端切换的目标信道的方法， 均应落入本发明实施例的保护范围。
其中 ,基站确定进行切换操作的终端是根据基站收集的切换判决信息确定 的。 当切换判决信息为由于终端远离当前服务区的移动，移动产生信号强度下 降时， 基站确定的进行切换操作的终端仅包括： 上报该切换判决信息的终端； 当切换判决信息为终端检测到授权用户时，则基站确定的进行切换操作的终端 包括： 上报该切换判决信息的终端以及与该终端相邻的终端； 当切换判决信息 为该基站负载过重时， 则为了达到负载均衡，基站确定的进行切换操作的终端 包括：工作在该基站推荐的目标信道上的邻居基站的服务区和该基站服务区的 重叠范围内的终端。
上述无线系统的切换方法，基站收集切换判决信息， 并根据收集的切换判 决信息确定进行切换操作，在发送给基站服务区内的终端的切换消息中携带切 换模式指示信息，指示终端切换的目标信道，从而可以灵活地处理整个系统全 部进行切换操作和部分终端执行切换操作的情形，减少了由切换操作带来的工 作信道上的业务中断， 提高了整个系统的 QoS, 提高了网络的频谱利用率， 减 少了终端切换失败的情况。
如图 2所示，为本发明实施例无线系统的结构图，包括基站 21和终端 22， 基站 21 , 用于收集切换判决信息， 根据该切换判决信息确定切换模式，
根据该切换模式确定切换操作的执行，并发送切换消息至基站服务区内的终端
22, 该切换消息携带切换模式和终端 22切换的目标信道的指示信息， 指示终 端 22根据切换模式切换到目标信道上；
终端 22, 用于接收基站 21发送的切换消息， 根据该切换消息携带的切换 模式和终端 22切换的目标信道的指示信息执行切换操作。
如图 3所示， 为本发明实施例基站的结构图， 包括：
收集模块 211 , 用于收集切换判决信息；
确定模块 212，用于根据收集模块 211收集的切换判决信息确定切换模式， 并根据该切换模式确定切换操作的执行；
消息发送模块 213 , 用于发送切换消息至基站服务区内的终端 22,该切换 消息携带确定模块 212确定的切换模式和该终端 22切换的目标信道的指示信 息。
其中， 确定模块 212可以包括：
切换判断子模块 2121 , 用于判断收集模块 211收集的切换判决信息是否 满足切换触发条件；
模式确定子模块 2122, 用于在切换判断子模块 2121判断切换判决信息满 足切换触发条件之后，判断收集模块 211收集的切换判决信息是否满足切换模 式判决条件， 如果满足， 则确定执行第一切换模式， 如果收集模块 211收集的 切换判决信息不满足切换模式判决条件， 则确定执行第二切换模式；
信道确定子模块 2123 , 用于在模式确定子模块 2122确定切换模式之后， 确定基站服务区内的终端切换的目标信道；
切换终端确定子模块 2124, 用于在模式确定子模块 2122确定切换模式之 后， 确定执行切换的终端。
其中， 该基站还可以包括： 切换执行模块 214， 用于在确定模块 212确定 切换模式之后， 执行切换操作。
其中， 切换执行模块 214可以包括：
第一切换模式执行子模块 2141 , 用于在模式确定子模块 2122确定执行第 一切换模式之后，存储该基站所服务的终端切换前的数据信息， 并切换到目标 信道， 在约定时延后在目标信道上恢复通讯；
第二切换模式执行子模块 2142, 用于在模式确定子模块 2122确定执行第 二切换模式之后，确定进行切换操作的终端， 中断与所述确定进行切换操作的 终端的通讯，存储所述确定进行切换操作的终端切换前的数据信息， 向工作在 基站推荐终端切换的目标信道上的邻居基站转发所述基站存储的切换前的数 据信息和通讯上下文。
如图 4所示， 为本发明实施例终端 22的结构图， 包括：
消息接收模块 221 , 用于接收基站发送的切换消息， 该切换消息携带切换 模式和终端切换的目标信道的指示信息；
切换执行模块 222, 用于根据消息接收模块 221接收的切换消息中携带的 切换模式和终端切换的目标信道的指示信息执行切换操作。
其中， 切换执行模块 222可以包括： 第一切换模式执行子模块 2221 , 用 于当消息接收模块 221接收的切换消息中指示终端执行第一切换模式时，在约 定时延后切换到目标信道， 恢复与切换到目标信道上的基站的通讯。
其中， 切换执行模块 222可以包括： 第二切换模式执行子模块 2222, 用 于当消息接收模块 221接收的切换消息中指示终端执行第二切换模式时，在基 站推荐的邻居基站工作信道上获得同步， 接入所述邻居基站， 恢复通讯。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到本发明 可以通过硬件实现，也可以可借助软件加必要的通用硬件平台的方式来实现基 于这样的理解，本发明的技术方案可以以软件产品的形式体现出来，该软件产 品可以存储在一个非易失性存储介质（可以是 CD-ROM, U盘， 移动硬盘等） 中， 包括若干指令用以使得一台计算机设备（可以是个人计算机， 服务器， 或 者网络设备等）执行本发明各个实施例所述的方法。
本领域技术人员可以理解附图只是一个优选实施例的示意图，附图中的模 块或流程并不一定是实施本发明所必须的。
本领域技术人员可以理解实施例中的装置中的模块可以按照实施例描述 进行分布于实施例的装置中，也可以进行相应变化位于不同于本实施例的一个 或多个装置中。上述实施例的模块可以合并为一个模块，也可以进一步拆分成 多个子模块。
上述本发明实施例序号仅仅为了描述， 不代表实施例的优劣。 以上公开的
仅为本发明的几个具体实施例， 但是， 本发明并非局限于此， 任何本领域的技 术人员能思之的变化都应落入本发明的保护范围。
Claims
1、 一种无线系统的切换方法， 其特征在于， 包括：
基站收集切换判决信息；
根据所述切换判决信息确定切换模式， 并根据所述切换模式生成切换消 发送所述切换消息至基站服务区内的终端，所述切换消息携带所述切换模 式和所述终端切换的目标信道的指示信息，指示所述终端 ^居所述切换模式切 换到目标信道上。
2、 如权利要求 1所述无线系统的切换方法， 其特征在于， 所述切换判决 信息包括所述基站服务区内的终端上报的测量信息和 /或网络侧信息。
3、 如权利要求 1所述无线系统的切换方法， 其特征在于， 所述基站收集 切换判决信息之后，还包括： 所述基站判断所述切换判决信息是否满足切换触 发条件；
当所述切换判决信息满足所述切换触发条件时，执行所述根据切换判决信 息确定切换模式的步骤。
4、 如权利要求 1所述无线系统的切换方法， 其特征在于， 所述根据切换 判决信息确定切换模式， 并根据所述切换模式生成切换消息包括：
当所述切换判决信息满足所述切换模式判决条件时，所述基站确定执行第 一切换模式；
所述基站根据所述第一切换模式生成切换消息，所述切换消息中携带有所 述基站确定切换到的目标信道的指示信息，以及指示所述基站服务区内的所有 终端切换到所述目标信道的指示信息。
5、 如权利要求 4所述无线系统的切换方法， 其特征在于， 所述发送切换 消息至所述基站服务区内的终端之后 , 还包括：
所述基站及所述基站服务区内的所有终端在约定时延后 ,根据预先存储的 切换前的数据信息在所述目标信道上恢复通信。
6、 如权利要求 1所述无线系统的切换方法， 其特征在于， 所述根据切换 判决信息确定切换模式， 并根据所述切换模式生成切换消息包括：
当所述切换判决信息不满足所述切换模式判决条件时，所述基站确定执行
第二切换模式；
所述基站根据所述第二切换模式生成切换消息，所述基站确定进行切换操 作的终端，所述切换消息中携带有所述基站向所述确定进行切换操作的终端推 荐的邻居基站的工作信道；
所述发送所述切换消息至所述基站服务区内的终端包括：向所述确定进行 切换操作的终端发送切换消息，所述切换消息用于中断所述基站与所述确定进 行切换操作的终端的通讯。
7、 如权利要求 6所述无线系统的切换方法， 其特征在于， 向所述确定进 行切换操作的终端推荐邻居基站的工作信道包括：根据所述切换判决信息确定 所述确定进行切换操作的终端切换的邻居基站的工作信道；
所述确定进行切换操作的终端切换的邻居基站的工作信道包括： 远离所述确定进行切换操作的终端检测到的授权用户工作信道的邻居基 站工作信道、 负载小于所述基站的负载的邻居基站工作信道、或所述基站服务 区内确定进行切换操作的终端移动方向上的邻居基站工作信道。
8、 如权利要求 6所述无线系统的切换方法， 其特征在于， 所述基站确定 进行切换操作的终端包括：所述基站根据所述基站收集的切换判决信息确定进 行切换操作的终端；
所述进行切换操作的终端包括：
上报所述切换判决信息的终端、或上报所述切换判决信息的终端以及与所 述上报切换判决信息的终端相邻的终端、或工作在所述基站推荐的目标信道上 的邻居基站的服务区和所述基站服务区的重叠范围内的终端。
9、 如权利要求 6所述无线系统的切换方法， 其特征在于， 所述向确定进 行切换操作的终端发送切换消息之后， 还包括：
所述基站向所述邻居基站转发所述基站存储的所述确定进行切换操作的 终端切换前的数据信息和通讯上下文，所述基站确定的进行切换操作的终端在 所述基站推荐的邻居基站工作信道上获得同步， 接入所述邻居基站。
10、 一种无线系统， 其特征在于， 包括：
基站， 用于收集切换判决信息， 根据所述切换判决信息确定切换模式， 根 据所述切换模式确定切换操作的执行， 并发送切换消息至基站服务区内的终
端， 所述切换消息携带所述切换模式和所述终端切换的目标信道的指示信息， 指示所述终端 ^居所述切换模式切换到目标信道上；
终端， 用于接收所述基站发送的切换消息，根据所述切换消息携带的切换 模式和所述终端切换的目标信道的指示信息执行切换操作。
11、 一种基站， 其特征在于， 包括：
收集模块， 用于收集切换判决信息；
确定模块， 用于根据所述收集模块收集的切换判决信息确定切换模式， 并 根据所述切换模式生成切换消息；
消息发送模块， 用于发送所述切换消息至基站服务区内的终端， 所述切换 消息携带所述确定模块确定的切换模式和所述终端切换的目标信道的指示信 息。
12、 如权利要求 11所述基站， 其特征在于， 所述确定模块包括： 切换判断子模块，用于判断所述收集模块收集的切换判决信息是否满足切 换触发条件；
模式确定子模块，用于在所述切换判断子模块判断所述切换判决信息满足 切换触发条件之后，判断所述收集模块收集的切换判决信息是否满足切换模式 判决条件， 如果满足， 则确定执行第一切换模式， 如果所述收集模块收集的切 换判决信息不满足所述切换模式判决条件， 则确定执行第二切换模式；
信道确定子模块，用于在所述模式确定子模块确定切换模式之后，确定所 述基站服务区内的终端切换的目标信道；
切换终端确定子模块， 用于在所述模式确定子模块确定切换模式之后，确 定执行切换的终端。
13、 如权利要求 12所述基站， 其特征在于， 还包括：
第一切换模式执行子模块，用于在所述模式确定子模块确定执行第一切换 模式之后， 切换到所述目标信道， 在约定时延后在所述目标信道上恢复通讯； 第二切换模式执行子模块，用于在所述模式确定子模块确定执行第二切换 模式之后，确定进行切换操作的终端， 中断与所述确定进行切换操作的终端的 通讯，向工作在所述目标信道上的邻居基站转发所述确定进行切换操作的终端 在切换前的数据信息和通讯上下文。
14、 一种终端， 其特征在于， 包括：
消息接收模块， 用于接收基站发送的切换消息， 所述切换消息携带切换模 式和所述终端切换的目标信道的指示信息；
切换执行模块， 用于根据所述消息接收模块接收的切换消息执行切换操 作。
15、 如权利要求 14所述终端， 其特征在于， 所述切换执行模块包括： 第一切换模式执行子模块，用于当所述消息接收模块接收的切换消息中指 示所述终端执行第一切换模式时，在约定时延后切换到所述目标信道， 恢复与 切换到所述目标信道上的基站的通讯；
第二切换模式执行子模块，用于当所述消息接收模块接收的切换消息中指 示所述终端执行第二切换模式时，在所述基站推荐的邻居基站工作信道上获得 同步， 接入所述邻居基站， 恢复通讯。
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| US9730134B2 (en) * | 2013-03-08 | 2017-08-08 | Nokia Technologies Oy | Method and apparatus for handover of device-to-device communications |
| CN106341844A (zh) * | 2016-11-30 | 2017-01-18 | 北京邮电大学 | 一种基于sdn的无线局域网负载均衡方法和装置 |
| CN112997519B (zh) * | 2018-12-18 | 2024-03-15 | 联想(北京)有限公司 | 用于非地面网络中的通信的用户装备、基站及方法 |
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| CN1992960A (zh) * | 2005-12-30 | 2007-07-04 | 华为技术有限公司 | 一种VoIP业务信道切换控制的方法 |
| CN101179821A (zh) * | 2006-11-07 | 2008-05-14 | 华为技术有限公司 | 一种无线通信系统中实现终端接入的方法及装置及系统 |
| CN101212775A (zh) * | 2006-12-30 | 2008-07-02 | 华为技术有限公司 | 一种切换过程中无线链路失败的处理方法及其装置 |
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| CN1992960A (zh) * | 2005-12-30 | 2007-07-04 | 华为技术有限公司 | 一种VoIP业务信道切换控制的方法 |
| CN101179821A (zh) * | 2006-11-07 | 2008-05-14 | 华为技术有限公司 | 一种无线通信系统中实现终端接入的方法及装置及系统 |
| CN101212775A (zh) * | 2006-12-30 | 2008-07-02 | 华为技术有限公司 | 一种切换过程中无线链路失败的处理方法及其装置 |
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