CN104994548B - A kind of switching method in LTE system and base station - Google Patents

A kind of switching method in LTE system and base station Download PDF

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CN104994548B
CN104994548B CN201510409690.0A CN201510409690A CN104994548B CN 104994548 B CN104994548 B CN 104994548B CN 201510409690 A CN201510409690 A CN 201510409690A CN 104994548 B CN104994548 B CN 104994548B
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sinr
data rate
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serving cell
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CN104994548A (en
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李佳俊
李轶群
路玮
宋蒙
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China United Network Communications Group Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016Hand-off preparation specially adapted for end-to-end data sessions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0083Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085Hand-off measurements
    • H04W36/0094Definition of hand-off measurement parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/24Reselection being triggered by specific parameters
    • H04W36/30Reselection being triggered by specific parameters by measured or perceived connection quality data

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

本发明实施例公开了一种LTE系统中的切换方法和基站,涉及通信技术领域,可以保证UE切换后的下行链路的数据速率大于UE切换前的下行链路的数据速率,从而提高用户体验。具体方案为:服务小区的基站获取第一SINR;该基站获取第二SINR;该基站获取服务小区的可用RB的个数和第一小区的可用RB的个数;该基站根据第一SINR和服务小区的可用RB的个数确定UE在服务小区中的下行链路的数据速率,并根据第二SINR和第一小区的可用RB的个数确定UE在第一小区中的下行链路的数据速率;若UE在第一小区的下行链路的数据速率大于UE在服务小区的下行链路的数据速率,则该基站将UE从服务小区切换至第一小区。

The embodiment of the present invention discloses a handover method and a base station in an LTE system, which relate to the field of communication technology and can ensure that the data rate of the downlink after UE handover is greater than the data rate of the downlink before UE handover, thereby improving user experience . The specific solution is: the base station of the serving cell obtains the first SINR; the base station obtains the second SINR; the base station obtains the number of available RBs in the serving cell and the number of available RBs in the first cell; The number of available RBs in the cell determines the downlink data rate of the UE in the serving cell, and determines the downlink data rate of the UE in the first cell according to the second SINR and the number of available RBs in the first cell ; If the downlink data rate of the UE in the first cell is greater than the downlink data rate of the UE in the serving cell, the base station switches the UE from the serving cell to the first cell.

Description

一种LTE系统中的切换方法和基站Handover method and base station in an LTE system

技术领域technical field

本发明涉及通信技术领域,尤其涉及一种长期演进(英文:Long Term Evolution,缩写:LTE)系统中的切换方法和基站。The present invention relates to the field of communication technologies, and in particular to a handover method and a base station in a Long Term Evolution (English: Long Term Evolution, abbreviation: LTE) system.

背景技术Background technique

由于LTE系统中每个小区的覆盖范围有限,当用户设备(英文:User Equipment,缩写:UE)移动到服务小区的边缘时,UE在服务小区的信号质量可能会逐渐降低,为了保证UE能够正常的通信,需要将UE从服务小区切换至信号质量更好的邻小区。Due to the limited coverage of each cell in the LTE system, when the user equipment (English: User Equipment, abbreviation: UE) moves to the edge of the serving cell, the signal quality of the UE in the serving cell may gradually decrease. communication, the UE needs to be handed over from the serving cell to the neighboring cell with better signal quality.

在LTE系统中,用户对数据业务(如浏览网页、下载歌曲、下载视频等)的需求量越来越大,数据业务的业务质量主要受下行链路的质量影响,而上行链路的质量对数据业务的业务质量影响不大,因此,现有的切换方法主要关注的是下行链路的质量。LTE系统中常用的一种切换方法是基于参考信号接收功率(英文:Reference Signal Receiving Power,缩写:RSRP)的切换方法。该方法包括:UE分别测量服务小区的RSRP和邻小区的RSRP,并将测量结果上报给服务小区的基站;服务小区的基站根据服务小区的RSRP和邻小区的RSRP进行判决,确定是否进行切换。具体的,当邻小区的RSRP大于服务小区的RSRP时,服务小区的基站将UE从服务小区切换至邻小区;当邻小区的RSRP小于等于服务小区的RSRP时,UE不进行切换。In the LTE system, users have an increasing demand for data services (such as browsing web pages, downloading songs, downloading videos, etc.), and the service quality of data services is mainly affected by the quality of the downlink, while the quality of the uplink has a great impact on The service quality of the data service has little influence, therefore, the existing handover method mainly focuses on the quality of the downlink. A handover method commonly used in an LTE system is a handover method based on Reference Signal Received Power (English: Reference Signal Receiving Power, abbreviation: RSRP). The method includes: the UE separately measures the RSRP of the serving cell and the RSRP of the adjacent cell, and reports the measurement results to the base station of the serving cell; the base station of the serving cell makes a judgment according to the RSRP of the serving cell and the RSRP of the adjacent cell, and determines whether to perform handover. Specifically, when the RSRP of the neighboring cell is greater than the RSRP of the serving cell, the base station of the serving cell handovers the UE from the serving cell to the neighboring cell; when the RSRP of the neighboring cell is less than or equal to the RSRP of the serving cell, the UE does not perform handover.

但是,上述方法存在如下问题:RSRP仅能反映下行链路的信号强度,而对于数据业务,用户更关注的是下行链路的数据速率,下行链路的数据速率除了和下行链路的信号强度有关,还和干扰信号的强度、可用系统资源的多少等有关,RSRP大的小区,下行链路的数据速率不一定大,因此,RSRP的大小不能反映下行链路的数据速率的大小,根据RSRP确定是否进行切换,可能会导致UE切换后的下行链路的数据速率小于UE切换前的下行链路的数据速率,从而导致用户体验较差。However, the above method has the following problems: RSRP can only reflect the signal strength of the downlink, and for data services, users pay more attention to the data rate of the downlink. It is also related to the strength of the interference signal and the amount of available system resources. In a cell with a large RSRP, the downlink data rate is not necessarily high. Therefore, the size of the RSRP cannot reflect the size of the downlink data rate. According to RSRP Determining whether to perform handover may cause the downlink data rate of the UE after the handover to be lower than the downlink data rate of the UE before the handover, thereby causing poor user experience.

发明内容Contents of the invention

本发明的实施例提供一种LTE系统中的切换方法和基站,可以保证UE切换后的下行链路的数据速率大于UE切换前的下行链路的数据速率,从而提高用户体验。Embodiments of the present invention provide a handover method and a base station in an LTE system, which can ensure that the downlink data rate of the UE after handover is greater than the downlink data rate of the UE before handover, thereby improving user experience.

为达到上述目的,本发明的实施例采用如下技术方案:In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

本发明实施例的第一方面,提供一种长期演进LTE系统中的切换方法,包括:The first aspect of the embodiments of the present invention provides a handover method in a long term evolution LTE system, including:

服务小区的基站获取第一信干噪比SINR,所述第一SINR为用户设备UE测量得到的所述服务小区的SINR;The base station of the serving cell acquires a first SINR, where the first SINR is the SINR of the serving cell measured by the user equipment UE;

所述基站获取第二SINR,所述第二SINR为所述UE测量得到的第一小区的SINR,所述第一小区为邻小区;The base station acquires a second SINR, where the second SINR is the SINR of the first cell measured by the UE, and the first cell is a neighboring cell;

所述基站获取所述服务小区的可用资源块RB的个数和所述第一小区的可用RB的个数;The base station acquires the number of available resource block RBs of the serving cell and the number of available RBs of the first cell;

所述基站根据所述第一SINR和所述服务小区的可用RB的个数确定所述UE在所述服务小区中的下行链路的数据速率,并根据所述第二SINR和所述第一小区的可用RB的个数确定所述UE在所述第一小区中的下行链路的数据速率;The base station determines the downlink data rate of the UE in the serving cell according to the first SINR and the number of available RBs in the serving cell, and determines the downlink data rate of the UE in the serving cell according to the second SINR and the first The number of available RBs of the cell determines the downlink data rate of the UE in the first cell;

若所述UE在所述第一小区的下行链路的数据速率大于所述UE在所述服务小区的下行链路的数据速率,则所述基站将所述UE从所述服务小区切换至所述第一小区。If the downlink data rate of the UE in the first cell is greater than the downlink data rate of the UE in the serving cell, the base station switches the UE from the serving cell to the Describe the first district.

结合第一方面,在第一方面的第一种可能的实现方式中,所述服务小区的基站获取第一信干噪比SINR,包括:With reference to the first aspect, in a first possible implementation manner of the first aspect, the base station of the serving cell acquires the first SINR, including:

所述基站向所述UE发送第一测量消息,所述第一测量消息用于指示所述UE测量所述服务小区的SINR;The base station sends a first measurement message to the UE, where the first measurement message is used to instruct the UE to measure the SINR of the serving cell;

所述基站接收所述UE发送的第一测量结果,所述第一测量结果中包含所述第一SINR,所述第一SINR为所述UE测量得到的所述服务小区的SINR。The base station receives the first measurement result sent by the UE, where the first measurement result includes the first SINR, and the first SINR is the SINR of the serving cell measured by the UE.

结合第一方面的第一种可能的实现方式,在第一方面的第二种可能的实现方式中,所述基站获取第二SINR,包括:With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, acquiring the second SINR by the base station includes:

若所述第一SINR小于等于测量门限,则所述基站向所述UE发送第二测量消息,所述第二测量消息用于指示所述UE测量第二小区的SINR,所述第二测量消息中包含所述第二小区的标识和切换门限,所述第二小区为待测量的邻小区;If the first SINR is less than or equal to the measurement threshold, the base station sends a second measurement message to the UE, the second measurement message is used to instruct the UE to measure the SINR of the second cell, and the second measurement message Including the identity and handover threshold of the second cell, the second cell is a neighbor cell to be measured;

所述基站接收所述UE上报的第二测量结果,所述第二测量结果中包含:所述第一小区的标识和所述第二SINR,所述第一小区为所述UE测量得到的所述第二小区中SINR大于所述切换门限的小区,所述第二SINR为所述UE测量得到的所述第一小区的SINR。The base station receives the second measurement result reported by the UE, the second measurement result includes: the identity of the first cell and the second SINR, and the first cell is the measured result obtained by the UE. Among the second cells, the cells whose SINR is greater than the handover threshold, the second SINR is the SINR of the first cell measured by the UE.

结合第一方面或第一方面的第一种可能的实现方式或第一方面的第二种可能的实现方式,在第一方面的第三种可能的实现方式中,所述基站根据所述第一SINR和所述服务小区的可用RB的个数确定所述UE在所述服务小区中的下行链路的数据速率,并根据所述第二SINR和所述第一小区的可用RB的个数确定所述UE在所述第一小区中的下行链路的数据速率,包括:With reference to the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect, in a third possible implementation of the first aspect, the base station according to the first A SINR and the number of available RBs of the serving cell determine the downlink data rate of the UE in the serving cell, and according to the second SINR and the number of available RBs of the first cell Determining a downlink data rate of the UE in the first cell includes:

所述基站根据所述第一SINR和所述服务小区的可用RB的个数,查找第一映射表,得到第一数据速率,所述第一数据速率为所述UE在所述服务小区中的下行链路的数据速率;The base station searches a first mapping table according to the first SINR and the number of available RBs of the serving cell to obtain a first data rate, and the first data rate is the UE's RB in the serving cell Downlink data rate;

所述基站根据所述第二SINR和所述第一小区的可用RB的个数,查找所述第一映射表,得到第二数据速率,所述第二数据速率为所述UE在所述第一小区中的下行链路的数据速率;The base station searches the first mapping table according to the second SINR and the number of available RBs of the first cell, and obtains a second data rate, and the second data rate is the UE in the second the data rate of the downlink in a cell;

其中,所述第一映射表为所述基站中预先保存的映射表,所述第一映射表用于指示SINR、可用RB的个数与数据速率之间的对应关系。Wherein, the first mapping table is a pre-stored mapping table in the base station, and the first mapping table is used to indicate a correspondence between SINR, the number of available RBs, and a data rate.

结合第一方面的第二种可能的实现方式,在第一方面的第四种可能的实现方式中,所述切换方法还包括:With reference to the second possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the handover method further includes:

若所述UE在所述第一小区的下行链路的数据速率小于等于所述UE在所述服务小区的下行链路的数据速率,则所述基站将所述测量门限降低预设值,并将降低后的测量门限作为新的测量门限。If the downlink data rate of the UE in the first cell is less than or equal to the downlink data rate of the UE in the serving cell, the base station lowers the measurement threshold by a preset value, and The reduced measurement threshold is used as a new measurement threshold.

本发明实施例的第二方面,提供一种基站,包括:A second aspect of the embodiments of the present invention provides a base station, including:

获取单元,用于获取第一信干噪比SINR,所述第一SINR为用户设备UE测量得到的所述服务小区的SINR;An acquiring unit, configured to acquire a first signal-to-interference-noise ratio SINR, where the first SINR is the SINR of the serving cell measured by the user equipment UE;

所述获取单元,还用于获取第二SINR,所述第二SINR为所述UE测量得到的第一小区的SINR,所述第一小区为邻小区;The acquiring unit is further configured to acquire a second SINR, where the second SINR is the SINR of the first cell measured by the UE, and the first cell is a neighboring cell;

所述获取单元,还用于获取所述服务小区的可用资源块RB的个数和所述第一小区的可用RB的个数;The acquiring unit is further configured to acquire the number of available resource block RBs of the serving cell and the number of available RBs of the first cell;

确定单元,用于根据所述获取单元获取的所述第一SINR和所述服务小区的可用RB的个数确定所述UE在所述服务小区中的下行链路的数据速率,并根据所述获取单元获取的所述第二SINR和所述第一小区的可用RB的个数确定所述UE在所述第一小区中的下行链路的数据速率;a determining unit, configured to determine the downlink data rate of the UE in the serving cell according to the first SINR obtained by the obtaining unit and the number of available RBs in the serving cell, and according to the The second SINR obtained by the obtaining unit and the number of available RBs in the first cell determine the downlink data rate of the UE in the first cell;

切换单元,用于若所述确定单元确定的所述UE在所述第一小区的下行链路的数据速率大于所述确定单元确定的所述UE在所述服务小区的下行链路的数据速率,则将所述UE从所述服务小区切换至所述第一小区。A switching unit, configured to if the downlink data rate of the UE in the first cell determined by the determining unit is greater than the downlink data rate of the UE in the serving cell determined by the determining unit , then handover the UE from the serving cell to the first cell.

结合第二方面,在第二方面的第一种可能的实现方式中,所述获取单元包括:With reference to the second aspect, in a first possible implementation manner of the second aspect, the acquiring unit includes:

发送模块,用于向所述UE发送第一测量消息,所述第一测量消息用于指示所述UE测量所述服务小区的SINR;A sending module, configured to send a first measurement message to the UE, where the first measurement message is used to instruct the UE to measure the SINR of the serving cell;

接收模块,用于接收所述UE发送的第一测量结果,所述第一测量结果中包含所述第一SINR,所述第一SINR为所述UE测量得到的所述服务小区的SINR。A receiving module, configured to receive a first measurement result sent by the UE, where the first measurement result includes the first SINR, and the first SINR is the SINR of the serving cell measured by the UE.

结合第二方面的第一种可能的实现方式,在第二方面的第二种可能的实现方式中,所述发送模块,还用于若所述第一SINR小于等于测量门限,则向所述UE发送第二测量消息,所述第二测量消息用于指示所述UE测量第二小区的SINR,所述第二测量消息中包含所述第二小区的标识和切换门限,所述第二小区为待测量的邻小区;With reference to the first possible implementation of the second aspect, in a second possible implementation of the second aspect, the sending module is further configured to, if the first SINR is less than or equal to a measurement threshold, send the The UE sends a second measurement message, the second measurement message is used to instruct the UE to measure the SINR of the second cell, the second measurement message includes the identity of the second cell and a handover threshold, and the second cell is the neighboring cell to be measured;

所述接收模块,还用于接收所述UE上报的第二测量结果,所述第二测量结果中包含:所述第一小区的标识和所述第二SINR,所述第一小区为所述UE测量得到的所述第二小区中SINR大于所述切换门限的小区,所述第二SINR为所述UE测量得到的所述第一小区的SINR。The receiving module is further configured to receive a second measurement result reported by the UE, the second measurement result includes: the identity of the first cell and the second SINR, the first cell is the A cell whose SINR is greater than the handover threshold among the second cells measured by the UE, where the second SINR is the SINR of the first cell obtained by the UE.

结合第二方面或第二方面的第一种可能的实现方式或第二方面的第二种可能的实现方式,在第二方面的第三种可能的实现方式中,所述确定单元包括:With reference to the second aspect or the first possible implementation manner of the second aspect or the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the determining unit includes:

查找模块,用于根据所述获取单元获取的所述第一SINR和所述服务小区的可用RB的个数,查找第一映射表,得到第一数据速率,所述第一数据速率为所述UE在所述服务小区中的下行链路的数据速率;A search module, configured to search a first mapping table according to the first SINR obtained by the obtaining unit and the number of available RBs of the serving cell, to obtain a first data rate, where the first data rate is the The downlink data rate of the UE in the serving cell;

所述查找模块,还用于根据所述获取单元获取的所述第二SINR和所述第一小区的可用RB的个数,查找所述第一映射表,得到第二数据速率,所述第二数据速率为所述UE在所述第一小区中的下行链路的数据速率;The search module is further configured to search the first mapping table according to the second SINR obtained by the obtaining unit and the number of available RBs of the first cell to obtain a second data rate, and the second The second data rate is the downlink data rate of the UE in the first cell;

其中,所述第一映射表为所述基站中预先保存的映射表,所述第一映射表用于指示SINR、可用RB的个数与数据速率之间的对应关系。Wherein, the first mapping table is a pre-stored mapping table in the base station, and the first mapping table is used to indicate a correspondence between SINR, the number of available RBs, and a data rate.

结合第二方面的第二种可能的实现方式,在第二方面的第四种可能的实现方式中,所述基站还包括:With reference to the second possible implementation of the second aspect, in a fourth possible implementation of the second aspect, the base station further includes:

更新单元,用于若所述确定单元确定的所述UE在所述第一小区的下行链路的数据速率小于等于所述确定单元确定的所述UE在所述服务小区的下行链路的数据速率,则将所述测量门限降低预设值,并将降低后的测量门限作为新的测量门限。An updating unit, configured to if the downlink data rate of the UE in the first cell determined by the determining unit is less than or equal to the downlink data of the UE in the serving cell determined by the determining unit rate, the measurement threshold is reduced by a preset value, and the reduced measurement threshold is used as a new measurement threshold.

本发明实施例提供的LTE系统中的切换方法和基站,服务小区的基站获取第一SINR;该基站获取第二SINR;该基站获取服务小区的可用RB的个数和第一小区的可用RB的个数;该基站根据第一SINR和服务小区的可用RB的个数确定UE在服务小区中的下行链路的数据速率,并根据第二SINR和第一小区的可用RB的个数确定UE在第一小区中的下行链路的数据速率;若UE在第一小区的下行链路的数据速率大于UE在服务小区的下行链路的数据速率,则该基站将UE从服务小区切换至第一小区。In the handover method and base station in the LTE system provided by the embodiments of the present invention, the base station of the serving cell obtains the first SINR; the base station obtains the second SINR; the base station obtains the number of available RBs of the serving cell and the number of available RBs of the first cell number; the base station determines the downlink data rate of the UE in the serving cell according to the first SINR and the number of available RBs in the serving cell, and determines the UE's downlink data rate in the serving cell according to the second SINR and the number of available RBs in the first cell The downlink data rate in the first cell; if the downlink data rate of the UE in the first cell is greater than the downlink data rate of the UE in the serving cell, the base station will switch the UE from the serving cell to the first district.

与现有技术中基于RSRP的切换方法,可能会导致UE切换后的下行链路的数据速率小于UE切换前的下行链路的数据速率,从而导致用户体验较差相比,在本实施提供的切换方法中,只有当UE在第一小区的下行链路的数据速率大于UE在服务小区的下行链路的数据速率,才将UE从服务小区切换至第一小区,可以保证UE切换后的下行链路的数据速率大于UE切换前的下行链路的数据速率,从而提高用户体验。Compared with the RSRP-based handover method in the prior art, which may cause the downlink data rate of the UE after handover to be lower than the downlink data rate of the UE before handover, resulting in poor user experience, the present implementation provides In the handover method, only when the downlink data rate of the UE in the first cell is greater than the downlink data rate of the UE in the serving cell, the UE is handed over from the serving cell to the first cell, which can ensure the downlink speed of the UE after handover. The data rate of the link is greater than the data rate of the downlink before the handover of the UE, thereby improving user experience.

附图说明Description of drawings

为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

图1为本发明实施例提供的一种LTE系统中的切换方法的流程图;FIG. 1 is a flowchart of a handover method in an LTE system provided by an embodiment of the present invention;

图2为本发明实施例提供的另一种LTE系统中的切换方法的流程图;FIG. 2 is a flowchart of another handover method in an LTE system provided by an embodiment of the present invention;

图3为本发明实施例提供的一种基站的组成示意图;FIG. 3 is a schematic composition diagram of a base station provided by an embodiment of the present invention;

图4为本发明实施例提供的另一种基站的组成示意图;FIG. 4 is a schematic composition diagram of another base station provided by an embodiment of the present invention;

图5为本发明实施例提供的另一种基站的组成示意图;FIG. 5 is a schematic composition diagram of another base station provided by an embodiment of the present invention;

图6为本发明实施例提供的另一种基站的组成示意图;FIG. 6 is a schematic composition diagram of another base station provided by an embodiment of the present invention;

图7为本发明实施例提供的另一种基站的组成示意图;FIG. 7 is a schematic composition diagram of another base station provided by an embodiment of the present invention;

图8为本发明实施例提供的另一种基站的组成示意图。FIG. 8 is a schematic composition diagram of another base station provided by an embodiment of the present invention.

具体实施方式Detailed ways

下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

实施例1Example 1

本发明实施例提供一种LTE系统中的切换方法,如图1所示,包括:An embodiment of the present invention provides a handover method in an LTE system, as shown in FIG. 1 , including:

S101、服务小区的基站获取第一信干噪比(英文:Signal to Interference plusNoise Ratio,缩写:SINR)。S101. The base station of the serving cell acquires a first Signal to Interference plus Noise Ratio (English: Signal to Interference plus Noise Ratio, abbreviation: SINR).

其中,服务小区为UE当前接入的小区,第一SINR为UE测量得到的服务小区的SINR。Wherein, the serving cell is the cell currently accessed by the UE, and the first SINR is the SINR of the serving cell measured and obtained by the UE.

具体的,该基站可以通过向UE发送测量消息,以指示UE测量并上报该第一SINR,从而获取该第一SINR。基站也可以通过UE主动上报的第一SINR,获取第一SINR。本发明实施例这里对该基站获取第一SINR的方法不作具体限定。Specifically, the base station may acquire the first SINR by sending a measurement message to the UE to instruct the UE to measure and report the first SINR. The base station may also obtain the first SINR through the first SINR actively reported by the UE. The embodiment of the present invention does not specifically limit the method for the base station to obtain the first SINR here.

S102、该基站获取第二SINR。S102. The base station acquires a second SINR.

其中,第二SINR为UE测量得到的第一小区的SINR,第一小区为邻小区。具体的,该基站可以通过向UE发送测量消息,以指示UE测量并上报该第二SINR,从而获取该第二SINR。基站也可以通过UE主动上报的第二SINR,获取第二SINR。本发明实施例这里对该基站获取第二SINR的方法不作具体限定。Wherein, the second SINR is the SINR of the first cell measured and obtained by the UE, and the first cell is a neighboring cell. Specifically, the base station may acquire the second SINR by sending a measurement message to the UE to instruct the UE to measure and report the second SINR. The base station may also obtain the second SINR through the second SINR actively reported by the UE. The embodiment of the present invention does not specifically limit the method for the base station to obtain the second SINR here.

S103、该基站获取服务小区的可用资源块(英文:Resource Block,缩写:RB)的个数和第一小区的可用RB的个数。S103. The base station obtains the number of available resource blocks (English: Resource Block, abbreviation: RB) of the serving cell and the number of available RBs of the first cell.

在LTE系统中,在频域上,1个RB为由12个的带宽为15kHz的子载波组成,在时域上,1个RB为1个时隙(0.5ms)。In the LTE system, in the frequency domain, one RB is composed of 12 subcarriers with a bandwidth of 15 kHz, and in the time domain, one RB is one time slot (0.5 ms).

本步骤中,基站可以通过X2接口与第一小区的基站进行信息交互,以获取第一小区的可用RB的个数。In this step, the base station may exchange information with the base station of the first cell through the X2 interface, so as to acquire the number of available RBs of the first cell.

S104、该基站根据第一SINR和服务小区的可用RB的个数确定UE在服务小区中的下行链路的数据速率,并根据第二SINR和第一小区的可用RB的个数确定UE在第一小区中的下行链路的数据速率。S104. The base station determines the downlink data rate of the UE in the serving cell according to the first SINR and the number of available RBs in the serving cell, and determines the UE's downlink data rate in the serving cell according to the second SINR and the number of available RBs in the first cell. The downlink data rate in a cell.

其中,该基站可以根据第一SINR和服务小区的可用RB的个数,结合香农公式计算UE在服务小区中的下行链路的数据速率,也可以根据SINR、RB的个数和数据速率之间的映射表,计算UE在服务小区中的下行链路的数据速率,其中,不同的设备生产厂商可以规定不同的SINR、RB的个数和数据速率之间的映射表。Wherein, the base station can calculate the downlink data rate of the UE in the serving cell according to the first SINR and the number of available RBs in the serving cell in combination with Shannon's formula, or according to the SINR, the number of RBs, and the data rate The mapping table calculates the downlink data rate of the UE in the serving cell, where different equipment manufacturers may specify different mapping tables between the SINR, the number of RBs, and the data rate.

该基站根据第二SINR和第一小区的可用RB的个数确定UE在第一小区中的下行链路的数据速率的方法,与该基站根据第一SINR和服务小区的可用RB的个数确定UE在服务小区中的下行链路的数据速率相同,本实施例这里不再赘述。The method for the base station to determine the downlink data rate of the UE in the first cell according to the second SINR and the number of available RBs in the first cell is the same as the method for the base station to determine according to the first SINR and the number of available RBs in the serving cell The downlink data rate of the UE in the serving cell is the same, which will not be repeated here in this embodiment.

S105、若UE在第一小区的下行链路的数据速率大于UE在服务小区的下行链路的数据速率,则该基站将UE从服务小区切换至第一小区。S105. If the downlink data rate of the UE in the first cell is greater than the downlink data rate of the UE in the serving cell, the base station switches the UE from the serving cell to the first cell.

本实施例提供的LTE系统中的切换方法,服务小区的基站获取第一SINR;该基站获取第二SINR;该基站获取服务小区的可用RB的个数和第一小区的可用RB的个数;该基站根据第一SINR和服务小区的可用RB的个数确定UE在服务小区中的下行链路的数据速率,并根据第二SINR和第一小区的可用RB的个数确定UE在第一小区中的下行链路的数据速率;若UE在第一小区的下行链路的数据速率大于UE在服务小区的下行链路的数据速率,则该基站将UE从服务小区切换至第一小区。In the handover method in the LTE system provided by this embodiment, the base station of the serving cell obtains the first SINR; the base station obtains the second SINR; the base station obtains the number of available RBs of the serving cell and the number of available RBs of the first cell; The base station determines the downlink data rate of the UE in the serving cell according to the first SINR and the number of available RBs in the serving cell, and determines the downlink data rate of the UE in the first cell according to the second SINR and the number of available RBs in the first cell. If the downlink data rate of the UE in the first cell is greater than the downlink data rate of the UE in the serving cell, the base station switches the UE from the serving cell to the first cell.

与现有技术中基于RSRP的切换方法,可能会导致UE切换后的下行链路的数据速率小于UE切换前的下行链路的数据速率,从而导致用户体验较差相比,在本实施提供的切换方法中,只有当UE在第一小区的下行链路的数据速率大于UE在服务小区的下行链路的数据速率,才将UE从服务小区切换至第一小区,可以保证UE切换后的下行链路的数据速率大于UE切换前的下行链路的数据速率,从而提高用户体验。Compared with the RSRP-based handover method in the prior art, which may cause the downlink data rate of the UE after handover to be lower than the downlink data rate of the UE before handover, resulting in poor user experience, the present implementation provides In the handover method, only when the downlink data rate of the UE in the first cell is greater than the downlink data rate of the UE in the serving cell, the UE is handed over from the serving cell to the first cell, which can ensure the downlink speed of the UE after handover. The data rate of the link is greater than the data rate of the downlink before the handover of the UE, thereby improving user experience.

实施例2Example 2

本发明实施例提供一种LTE系统中的切换方法,如图2所示,包括:An embodiment of the present invention provides a handover method in an LTE system, as shown in FIG. 2 , including:

S201、基站向UE发送第一测量消息,第一测量消息用于指示UE测量服务小区的SINR。S201. The base station sends a first measurement message to the UE, where the first measurement message is used to instruct the UE to measure the SINR of the serving cell.

其中,该基站为服务小区的基站,服务小区为UE当前接入的小区。Wherein, the base station is a base station of a serving cell, and the serving cell is a cell currently accessed by the UE.

S202、基站接收UE发送的第一测量结果,第一测量结果中包含第一SINR,第一SINR为UE测量得到的服务小区的SINR。S202. The base station receives the first measurement result sent by the UE, where the first measurement result includes a first SINR, and the first SINR is the SINR of the serving cell measured by the UE.

S203、若第一SINR小于等于测量门限,则基站向UE发送第二测量消息。S203. If the first SINR is less than or equal to the measurement threshold, the base station sends a second measurement message to the UE.

其中,测量门限为预设的一个值,可以用α表示。第二测量消息用于指示UE测量第二小区的SINR,第二测量消息中包含第二小区的标识和切换门限,第二小区为待测量的邻小区。待测量的邻小区可以包含多个小区。Wherein, the measurement threshold is a preset value, which can be represented by α. The second measurement message is used to instruct the UE to measure the SINR of the second cell, the second measurement message includes the identity of the second cell and the handover threshold, and the second cell is a neighboring cell to be measured. The neighboring cells to be measured may include multiple cells.

进一步的,基站可以通过X2接口与第二小区的基站进行信息交互,以获取第二小区的下行参考信号的配置信息(如,下行参考信号占用的RB的时频信息、下行参考信号的发送周期等)。基站向UE发送的第二测量消息中还可以包含第二小区的下行参考信号的配置信息。UE根据第二小区的下行参考信号的配置信息,在下行参考信号所占用的RB上进行解调,可以得到第二小区的下行参考信号的强度和干扰信号的强度,从而可以得到第二小区的SINR。Further, the base station can perform information interaction with the base station of the second cell through the X2 interface, so as to obtain the configuration information of the downlink reference signal of the second cell (such as the time-frequency information of the RB occupied by the downlink reference signal, the transmission cycle of the downlink reference signal) Wait). The second measurement message sent by the base station to the UE may further include configuration information of the downlink reference signal of the second cell. The UE performs demodulation on the RB occupied by the downlink reference signal according to the configuration information of the downlink reference signal of the second cell, and can obtain the strength of the downlink reference signal of the second cell and the strength of the interference signal, thereby obtaining the strength of the downlink reference signal of the second cell. SINR.

S204、基站接收UE上报的第二测量结果。S204. The base station receives the second measurement result reported by the UE.

其中,第二测量结果中包含:第一小区的标识和第二SINR,第一小区为UE测量得到的第二小区中SINR大于切换门限的小区,第二SINR为UE测量得到的第一小区的SINR,切换门限为预设的一个值,可以用β表示。Wherein, the second measurement result includes: the identity of the first cell and the second SINR, the first cell is the cell whose SINR is greater than the handover threshold in the second cell measured by the UE, and the second SINR is the cell of the first cell measured by the UE SINR, the switching threshold is a preset value, which can be represented by β.

需要说明的是,第二小区可以包含多个小区,第一小区属于第二小区,第一小区可以包含一个小区,第一小区也可以包含多个小区。It should be noted that the second cell may include multiple cells, the first cell belongs to the second cell, the first cell may include one cell, and the first cell may also include multiple cells.

S205、基站获取服务小区的可用RB的个数和第一小区的可用RB的个数。S205. The base station acquires the number of available RBs of the serving cell and the number of available RBs of the first cell.

本步骤中,基站可以通过X2接口与第一小区的基站进行信息交互,以获取第一小区的可用RB的个数。In this step, the base station may exchange information with the base station of the first cell through the X2 interface, so as to acquire the number of available RBs of the first cell.

S206、基站根据第一SINR和服务小区的可用RB的个数,查找第一映射表,得到第一数据速率,第一数据速率为UE在服务小区中的下行链路的数据速率。S206. The base station searches the first mapping table according to the first SINR and the number of available RBs of the serving cell to obtain a first data rate, where the first data rate is a downlink data rate of the UE in the serving cell.

其中,第一映射表为基站中预先保存的映射表,第一映射表用于指示SINR、可用RB的个数与数据速率之间的对应关系。不同的设备生产厂商可以规定不同的SINR、RB的个数和数据速率之间的映射表。Wherein, the first mapping table is a pre-stored mapping table in the base station, and the first mapping table is used to indicate the correspondence between the SINR, the number of available RBs, and the data rate. Different equipment manufacturers may specify different SINRs, mapping tables between the number of RBs and data rates.

S207、基站根据第二SINR和第一小区的可用RB的个数,查找第一映射表,得到第二数据速率,第二数据速率为UE在第一小区中的下行链路的数据速率。S207. The base station searches the first mapping table according to the second SINR and the number of available RBs in the first cell to obtain a second data rate, where the second data rate is a downlink data rate of the UE in the first cell.

S208、基站判断第二数据速率是否大于第一数据速率。S208. The base station judges whether the second data rate is greater than the first data rate.

若第二数据速率大于第一数据速率,则执行S209;若第二数据速率小于等于第一数据速率,则执行S210。If the second data rate is greater than the first data rate, execute S209; if the second data rate is less than or equal to the first data rate, execute S210.

S209、基站将UE从服务小区切换至第一小区。S209. The base station switches the UE from the serving cell to the first cell.

需要说明的是,若第一小区中存在多个小区满足第二数据速率大于第一数据速率,则基站可以将UE从服务小区切换至该多个小区中的任意一个小区。It should be noted that, if there are multiple cells in the first cell and the second data rate is greater than the first data rate, the base station may handover the UE from the serving cell to any one of the multiple cells.

S210、基站将测量门限降低预设值,并将降低后的测量门限作为新的测量门限。S210. The base station reduces the measurement threshold by a preset value, and uses the reduced measurement threshold as a new measurement threshold.

其中,预设值可以表示为△,新的测量门限可以表示为α',α'=α-△。Wherein, the preset value can be expressed as Δ, and the new measurement threshold can be expressed as α', where α'=α-Δ.

在S210之后,可以重复执行S201-S208。After S210, S201-S208 may be repeatedly executed.

本实施例提供的LTE系统中的切换方法,只有当第一SINR小于等于测量门限时,基站才向UE发送第二测量消息,以指示UE测量第二小区的SINR,这样可以减少UE的测量次数,从而节省系统资源。并且,在本实施提供的切换方法中,只有当UE在第一小区的下行链路的数据速率大于UE在服务小区的下行链路的数据速率,才将UE从服务小区切换至第一小区,可以保证UE切换后的下行链路的数据速率大于UE切换前的下行链路的数据速率,从而提高用户体验。此外,若第二数据速率小于等于第一数据速率,则不会对UE进行切换,这时如果UE仍然继续测量第二小区的SINR,最终得到的结果可能还是第二数据速率小于等于第一数据速率,这样,频繁测量第二小区的SINR会大量消耗UE的电量。采用本实施例的切换方法,若第二数据速率小于等于第一数据速率,则基站将测量门限降低预设值,并将降低后的测量门限作为新的测量门限,这样,只有当服务小区的SINR下降一定值,且满足服务小区的SINR小于等于新的测量门限时,UE才继续测量第二小区的SINR,这样可以减少对UE电量的消耗。In the handover method in the LTE system provided by this embodiment, only when the first SINR is less than or equal to the measurement threshold, the base station sends the second measurement message to the UE to instruct the UE to measure the SINR of the second cell, which can reduce the number of measurements of the UE , thereby saving system resources. Moreover, in the handover method provided by this implementation, only when the downlink data rate of the UE in the first cell is greater than the downlink data rate of the UE in the serving cell, the UE is handed over from the serving cell to the first cell, It can ensure that the data rate of the downlink after the handover of the UE is greater than the data rate of the downlink before the handover of the UE, thereby improving user experience. In addition, if the second data rate is less than or equal to the first data rate, the UE will not be handed over. At this time, if the UE continues to measure the SINR of the second cell, the final result may still be that the second data rate is less than or equal to the first data rate. In this way, frequently measuring the SINR of the second cell will consume a lot of power of the UE. Using the handover method of this embodiment, if the second data rate is less than or equal to the first data rate, the base station will reduce the measurement threshold by a preset value, and use the reduced measurement threshold as a new measurement threshold. In this way, only when the serving cell When the SINR drops by a certain value and the SINR of the serving cell is less than or equal to the new measurement threshold, the UE continues to measure the SINR of the second cell, which can reduce the power consumption of the UE.

实施例3Example 3

本发明实施例提供一种基站,如图3所示,可以包括:获取单元31、确定单元32和切换单元33。An embodiment of the present invention provides a base station, as shown in FIG. 3 , which may include: an acquiring unit 31 , a determining unit 32 , and a switching unit 33 .

获取单元31,用于获取第一SINR,第一SINR为UE测量得到的服务小区的SINR。The obtaining unit 31 is configured to obtain a first SINR, where the first SINR is the SINR of the serving cell measured by the UE.

获取单元31,还用于获取第二SINR,第二SINR为UE测量得到的第一小区的SINR,第一小区为邻小区。The obtaining unit 31 is further configured to obtain a second SINR, where the second SINR is the SINR of the first cell measured and obtained by the UE, and the first cell is a neighboring cell.

获取单元31,还用于获取服务小区的可用RB的个数和第一小区的可用RB的个数。The obtaining unit 31 is further configured to obtain the number of available RBs of the serving cell and the number of available RBs of the first cell.

确定单元32,用于根据获取单元31获取的第一SINR和服务小区的可用RB的个数确定UE在服务小区中的下行链路的数据速率,并根据获取单元31获取的第二SINR和第一小区的可用RB的个数确定UE在第一小区中的下行链路的数据速率。The determining unit 32 is configured to determine the downlink data rate of the UE in the serving cell according to the first SINR obtained by the obtaining unit 31 and the number of available RBs in the serving cell, and according to the second SINR and the second SINR obtained by the obtaining unit 31 The number of available RBs in a cell determines the downlink data rate of the UE in the first cell.

切换单元33,用于若确定单元32确定的UE在第一小区的下行链路的数据速率大于确定单元32确定的UE在服务小区的下行链路的数据速率,则将UE从服务小区切换至第一小区。The switching unit 33 is configured to switch the UE from the serving cell to first cell.

进一步的,如图4所示,获取单元31包括:发送模块311和接收模块312。Further, as shown in FIG. 4 , the acquiring unit 31 includes: a sending module 311 and a receiving module 312 .

发送模块311,用于向UE发送第一测量消息,第一测量消息用于指示UE测量服务小区的SINR。The sending module 311 is configured to send a first measurement message to the UE, where the first measurement message is used to instruct the UE to measure the SINR of the serving cell.

接收模块312,用于接收UE发送的第一测量结果,第一测量结果中包含第一SINR,第一SINR为UE测量得到的服务小区的SINR。The receiving module 312 is configured to receive the first measurement result sent by the UE, the first measurement result includes a first SINR, and the first SINR is the SINR of the serving cell measured by the UE.

进一步的,发送模块311,还用于若第一SINR小于等于测量门限,则向UE发送第二测量消息,第二测量消息用于指示UE测量第二小区的SINR,第二测量消息中包含第二小区的标识和切换门限,第二小区为待测量的邻小区。Further, the sending module 311 is also configured to send a second measurement message to the UE if the first SINR is less than or equal to the measurement threshold, the second measurement message is used to instruct the UE to measure the SINR of the second cell, and the second measurement message includes the first The identification and handover threshold of the second cell, the second cell is the neighbor cell to be measured.

接收模块312,还用于接收UE上报的第二测量结果,第二测量结果中包含:第一小区的标识和第二SINR,第一小区为UE测量得到的第二小区中SINR大于切换门限的小区,第二SINR为UE测量得到的第一小区的SINR。The receiving module 312 is also configured to receive the second measurement result reported by the UE, the second measurement result includes: the identity of the first cell and the second SINR, the first cell is the SINR of the second cell measured by the UE is greater than the handover threshold cell, and the second SINR is the SINR of the first cell measured and obtained by the UE.

进一步的,如图5所示,确定单元32包括:查找模块321。Further, as shown in FIG. 5 , the determining unit 32 includes: a search module 321 .

查找模块321,用于根据获取单元31获取的第一SINR和服务小区的可用RB的个数,查找第一映射表,得到第一数据速率,第一数据速率为UE在服务小区中的下行链路的数据速率。The search module 321 is configured to search the first mapping table according to the first SINR obtained by the obtaining unit 31 and the number of available RBs in the serving cell to obtain the first data rate, where the first data rate is the downlink rate of the UE in the serving cell road data rate.

查找模块321,还用于根据获取单元31获取的第二SINR和第一小区的可用RB的个数,查找第一映射表,得到第二数据速率,第二数据速率为UE在第一小区中的下行链路的数据速率。The search module 321 is further configured to search the first mapping table according to the second SINR obtained by the obtaining unit 31 and the number of available RBs in the first cell to obtain the second data rate, the second data rate is the UE in the first cell The downlink data rate.

其中,第一映射表为基站中预先保存的映射表,第一映射表用于指示SINR、可用RB的个数与数据速率之间的对应关系。Wherein, the first mapping table is a pre-stored mapping table in the base station, and the first mapping table is used to indicate the correspondence between the SINR, the number of available RBs, and the data rate.

进一步的,如图6所示,本发明实施例中的基站还包括:更新单元34。Further, as shown in FIG. 6 , the base station in this embodiment of the present invention further includes: an updating unit 34 .

更新单元34,用于若确定单元32确定的UE在第一小区的下行链路的数据速率小于等于确定单元32确定的UE在服务小区的下行链路的数据速率,则将测量门限降低预设值,并将降低后的测量门限作为新的测量门限。An updating unit 34, configured to reduce the measurement threshold by a preset value if the downlink data rate of the UE in the first cell determined by the determining unit 32 is less than or equal to the downlink data rate of the UE in the serving cell determined by the determining unit 32 value, and use the reduced measurement threshold as the new measurement threshold.

需要说明的是,本发明实施例提供的基站中部分功能模块的具体描述可以参考方法实施例中的对应内容,本实施例这里不再详细赘述。It should be noted that, for the specific description of some functional modules in the base station provided in the embodiment of the present invention, reference may be made to the corresponding content in the method embodiment, and details will not be described in detail here in this embodiment.

本发明实施例提供的基站,获取单元31获取第一SINR,获取第二SINR,获取服务小区的可用RB的个数和第一小区的可用RB的个数;确定单元32根据第一SINR和服务小区的可用RB的个数确定UE在服务小区中的下行链路的数据速率,并根据第二SINR和第一小区的可用RB的个数确定UE在第一小区中的下行链路的数据速率;若UE在第一小区的下行链路的数据速率大于UE在服务小区的下行链路的数据速率,则切换单元33将UE从服务小区切换至第一小区。In the base station provided by the embodiment of the present invention, the acquiring unit 31 acquires the first SINR, acquires the second SINR, acquires the number of available RBs in the serving cell and the number of available RBs in the first cell; The number of available RBs in the cell determines the downlink data rate of the UE in the serving cell, and determines the downlink data rate of the UE in the first cell according to the second SINR and the number of available RBs in the first cell ; If the downlink data rate of the UE in the first cell is greater than the downlink data rate of the UE in the serving cell, the switching unit 33 switches the UE from the serving cell to the first cell.

与现有技术中基于RSRP的切换方法,可能会导致UE切换后的下行链路的数据速率小于UE切换前的下行链路的数据速率,从而导致用户体验较差相比,采用本实施例提供的基站,只有当UE在第一小区的下行链路的数据速率大于UE在服务小区的下行链路的数据速率,才将UE从服务小区切换至第一小区,可以保证UE切换后的下行链路的数据速率大于UE切换前的下行链路的数据速率,从而提高用户体验。Compared with the RSRP-based handover method in the prior art, which may cause the downlink data rate of the UE after handover to be lower than the downlink data rate of the UE before handover, resulting in poor user experience, the present embodiment provides Only when the downlink data rate of the UE in the first cell is greater than the downlink data rate of the UE in the serving cell, will the UE be handed over from the serving cell to the first cell, which can ensure the downlink speed of the UE after handover The data rate of the downlink is greater than the data rate of the downlink before the handover of the UE, thereby improving user experience.

实施例4Example 4

本发明实施例提供一种基站,如图7所示,可以包括:处理器41。An embodiment of the present invention provides a base station, as shown in FIG. 7 , may include: a processor 41 .

处理器41,用于获取第一SINR,第一SINR为UE测量得到的服务小区的SINR;获取第二SINR,第二SINR为UE测量得到的第一小区的SINR,第一小区为邻小区;获取服务小区的可用RB的个数和第一小区的可用RB的个数;根据第一SINR和服务小区的可用RB的个数确定UE在服务小区中的下行链路的数据速率,并根据第二SINR和第一小区的可用RB的个数确定UE在第一小区中的下行链路的数据速率;若UE在第一小区的下行链路的数据速率大于UE在服务小区的下行链路的数据速率,则将UE从服务小区切换至第一小区。The processor 41 is configured to obtain a first SINR, where the first SINR is the SINR of the serving cell measured by the UE; obtain a second SINR, where the second SINR is the SINR of the first cell obtained by the UE measurement, and the first cell is a neighboring cell; Acquiring the number of available RBs in the serving cell and the number of available RBs in the first cell; determining the downlink data rate of the UE in the serving cell according to the first SINR and the number of available RBs in the serving cell, and according to the first SINR and the number of available RBs in the serving cell, and Two SINR and the number of available RBs in the first cell determine the downlink data rate of the UE in the first cell; if the downlink data rate of the UE in the first cell is greater than the downlink data rate of the UE in the serving cell data rate, the UE is handed over from the serving cell to the first cell.

其中,处理器41可以为基站的控制中心,如中央处理器(英文:CentralProcessing Unit,缩写:CPU),也可以为CPU、图像处理器(英文:Graphic ProcessingUnit,缩写:GPU)、数字信号处理器(英文:Digital Signal Processor,缩写:DSP)以及通信单元中的控制芯片(例如基带芯片)的组合。在本发明实施方式中,CPU可以是单运算核心,也可以包括多运算核心。Wherein, the processor 41 may be the control center of the base station, such as a central processing unit (English: Central Processing Unit, abbreviated: CPU), and may also be a CPU, an image processor (English: Graphic Processing Unit, abbreviated: GPU), a digital signal processor (English: Digital Signal Processor, abbreviation: DSP) and a combination of a control chip (such as a baseband chip) in the communication unit. In the embodiments of the present invention, the CPU may be a single computing core, or may include multiple computing cores.

进一步的,如图8所示,本实施例中的基站还包括:发送器42、接收器43和存储器44。处理器41、发送器42、接收器43和存储器44通过总线连接并完成相互间的通信。Further, as shown in FIG. 8 , the base station in this embodiment further includes: a transmitter 42 , a receiver 43 and a memory 44 . The processor 41 , the transmitter 42 , the receiver 43 and the memory 44 are connected through a bus to complete mutual communication.

其中,总线可以是工业标准体系结构(英文:Industry Standard Architecture,缩写:ISA)总线、外部设备互连(英文:Peripheral Component Interconnect,缩写:PCI)总线或扩展工业标准体系结构(英文:Extended Industry Standard Architecture,缩写:EISA)总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示,图8中仅用一条粗线表示,但并不表示仅有一根总线或一种类型的总线。Wherein, the bus may be an Industry Standard Architecture (English: Industry Standard Architecture, abbreviation: ISA) bus, a Peripheral Component Interconnect (English: Peripheral Component Interconnect, abbreviation: PCI) bus or an Extended Industry Standard Architecture (English: Extended Industry Standard Architecture, abbreviation: EISA) bus, etc. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 8 , but it does not mean that there is only one bus or one type of bus.

发送器42,用于向UE发送第一测量消息,第一测量消息用于指示UE测量服务小区的SINR。The transmitter 42 is configured to send a first measurement message to the UE, where the first measurement message is used to instruct the UE to measure the SINR of the serving cell.

接收器43,用于接收UE发送的第一测量结果,第一测量结果中包含第一SINR,第一SINR为UE测量得到的服务小区的SINR。The receiver 43 is configured to receive the first measurement result sent by the UE, where the first measurement result includes a first SINR, and the first SINR is the SINR of the serving cell measured by the UE.

存储器44,用于存储第一SINR、第二SINR、服务小区的可用RB的个数、第一小区的可用RB的个数、UE在服务小区中的下行链路的数据速率以及UE在第一小区中的下行链路的数据速率等。The memory 44 is configured to store the first SINR, the second SINR, the number of available RBs in the serving cell, the number of available RBs in the first cell, the downlink data rate of the UE in the serving cell, and the number of UEs in the first SINR. The data rate of the downlink in the cell, etc.

进一步的,发送器42,还用于若第一SINR小于等于测量门限,则向UE发送第二测量消息,第二测量消息用于指示UE测量第二小区的SINR,第二测量消息中包含第二小区的标识和切换门限,第二小区为待测量的邻小区。Further, the transmitter 42 is also configured to send a second measurement message to the UE if the first SINR is less than or equal to the measurement threshold, the second measurement message is used to instruct the UE to measure the SINR of the second cell, and the second measurement message includes the first The identification and handover threshold of the second cell, the second cell is the neighbor cell to be measured.

接收器43,还用于接收UE上报的第二测量结果,第二测量结果中包含:第一小区的标识和第二SINR,第一小区为UE测量得到的第二小区中SINR大于切换门限的小区,第二SINR为UE测量得到的第一小区的SINR。The receiver 43 is also configured to receive the second measurement result reported by the UE, the second measurement result includes: the identity of the first cell and the second SINR, the first cell is the SINR of the second cell measured by the UE is greater than the handover threshold cell, and the second SINR is the SINR of the first cell measured and obtained by the UE.

进一步的,处理器41,还用于根据第一SINR和服务小区的可用RB的个数,查找第一映射表,得到第一数据速率,第一数据速率为UE在服务小区中的下行链路的数据速率;根据第二SINR和第一小区的可用RB的个数,查找第一映射表,得到第二数据速率,第二数据速率为UE在第一小区中的下行链路的数据速率。Further, the processor 41 is further configured to search the first mapping table according to the first SINR and the number of available RBs of the serving cell to obtain the first data rate, where the first data rate is the downlink rate of the UE in the serving cell According to the second SINR and the number of available RBs in the first cell, search the first mapping table to obtain the second data rate, the second data rate is the downlink data rate of the UE in the first cell.

其中,第一映射表为基站中预先保存的映射表,第一映射表用于指示SINR、可用RB的个数与数据速率之间的对应关系。Wherein, the first mapping table is a pre-stored mapping table in the base station, and the first mapping table is used to indicate the correspondence between the SINR, the number of available RBs, and the data rate.

进一步的,处理器41,还用于若UE在第一小区的下行链路的数据速率小于等于UE在服务小区的下行链路的数据速率,则将测量门限降低预设值,并将降低后的测量门限作为新的测量门限。Further, the processor 41 is also configured to reduce the measurement threshold by a preset value if the downlink data rate of the UE in the first cell is less than or equal to the downlink data rate of the UE in the serving cell, and set the reduced The measurement threshold of is used as the new measurement threshold.

需要说明的是,本发明实施例提供的基站中部分功能模块的具体描述可以参考方法实施例中的对应内容,本实施例这里不再详细赘述。It should be noted that, for the specific description of some functional modules in the base station provided in the embodiment of the present invention, reference may be made to the corresponding content in the method embodiment, and details will not be described in detail here in this embodiment.

本发明实施例提供的基站,处理器41获取第一SINR,获取第二SINR,获取服务小区的可用RB的个数和第一小区的可用RB的个数;根据第一SINR和服务小区的可用RB的个数确定UE在服务小区中的下行链路的数据速率,并根据第二SINR和第一小区的可用RB的个数确定UE在第一小区中的下行链路的数据速率;若UE在第一小区的下行链路的数据速率大于UE在服务小区的下行链路的数据速率,则将UE从服务小区切换至第一小区。In the base station provided by the embodiment of the present invention, the processor 41 obtains the first SINR, obtains the second SINR, obtains the number of available RBs of the serving cell and the number of available RBs of the first cell; according to the first SINR and the number of available RBs of the serving cell The number of RBs determines the downlink data rate of the UE in the serving cell, and determines the downlink data rate of the UE in the first cell according to the second SINR and the number of available RBs in the first cell; if the UE If the downlink data rate of the first cell is greater than the downlink data rate of the UE in the serving cell, then the UE is handed over from the serving cell to the first cell.

与现有技术中基于RSRP的切换方法,可能会导致UE切换后的下行链路的数据速率小于UE切换前的下行链路的数据速率,从而导致用户体验较差相比,采用本实施例提供的基站,只有当UE在第一小区的下行链路的数据速率大于UE在服务小区的下行链路的数据速率,才将UE从服务小区切换至第一小区,可以保证UE切换后的下行链路的数据速率大于UE切换前的下行链路的数据速率,从而提高用户体验。Compared with the RSRP-based handover method in the prior art, which may cause the downlink data rate of the UE after handover to be lower than the downlink data rate of the UE before handover, resulting in poor user experience, the present embodiment provides Only when the downlink data rate of the UE in the first cell is greater than the downlink data rate of the UE in the serving cell, will the UE be handed over from the serving cell to the first cell, which can ensure the downlink speed of the UE after handover The data rate of the downlink is greater than the data rate of the downlink before the handover of the UE, thereby improving user experience.

通过以上的实施方式的描述,所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,仅以上述各功能模块的划分进行举例说明,实际应用中,可以根据需要而将上述功能分配由不同的功能模块完成,即将装置的内部结构划分成不同的功能模块,以完成以上描述的全部或者部分功能。上述描述的系统,装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned functions can be allocated according to needs It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. For the specific working process of the above-described system, device, and unit, reference may be made to the corresponding process in the foregoing method embodiments, and details are not repeated here.

在本申请所提供的几个实施例中,应该理解到,所揭露的系统,装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述模块或单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be Incorporation may either be integrated into another system, or some features may be omitted, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,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)或处理器(英文:processor)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(英文:Read-Only Memory,缩写:ROM)、随机存取存储器(英文:Random AccessMemory,缩写:RAM)、磁碟或者光盘等各种可以存储程序代码的介质。If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (English: processor) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (English: Read-Only Memory, abbreviated: ROM), random access memory (English: Random AccessMemory, abbreviated: RAM), magnetic disk or optical disc, etc. A medium on which program code can be stored.

以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (10)

1. the switching method in a kind of long term evolution LTE system, which is characterized in that including:
The first Signal to Interference plus Noise Ratio of base station the acquisition SINR, the first SINR of serving cell obtain described for user equipment (UE) measurement The SINR of serving cell;
The base station obtains the 2nd SINR, and the 2nd SINR is the SINR for the first community that the UE measurements obtain, and described the One cell is adjacent cell;
The base station obtains the number of the number of the available resource block RB of the serving cell and the available RB of the first community;
The base station determines the UE in the service according to the number of the first SINR and the available RB of the serving cell The data rate of downlink in cell, and determined according to the number of the 2nd SINR and the available RB of the first community The data rate of downlinks of the UE in the first community;
If the UE the downlink of the first community data rate be more than the UE the serving cell downlink The data rate of link, then the base station UE is switched into the first community from the serving cell.
2. switching method according to claim 1, which is characterized in that the base station of the serving cell obtains first and believes dry make an uproar Than SINR, including:
The base station sends first to the UE and measures message, and the first measurement message is used to indicate the UE and measures the clothes The SINR for cell of being engaged in;
The base station receives the first measurement result that the UE is sent, and includes the first SINR in first measurement result, First SINR is the SINR for the serving cell that the UE measurements obtain.
3. switching method according to claim 2, which is characterized in that the base station obtains the 2nd SINR, including:
If the first SINR is less than or equal to measure thresholding, the base station sends second to the UE and measures message, described the Two measurement message are used to indicate the SINR that the UE measures second community, and described second measures in message comprising the second community Mark and handoff threshold, the second community be adjacent cell to be measured;
The base station receives the second measurement result that the UE is reported, and includes in second measurement result:The first community Mark and the 2nd SINR, the first community be in the obtained second community of the UE measurements SINR be more than it is described The cell of handoff threshold, the 2nd SINR are the SINR for the first community that the UE measurements obtain.
4. switching method according to any one of claim 1-3, which is characterized in that the base station is according to described first The number of the available RB of SINR and the serving cell determines the data speed of downlinks of the UE in the serving cell Rate, and determine the UE in the first community according to the number of the 2nd SINR and the available RB of the first community The data rate of downlink, including:
The first mapping table is searched, is obtained according to the number of the first SINR and the available RB of the serving cell in the base station First data rate, first data rate are the data rate of downlinks of the UE in the serving cell;
First mapping table is searched in the base station according to the number of the 2nd SINR and the available RB of the first community, The second data rate is obtained, second data rate is the data speed of downlinks of the UE in the first community Rate;
Wherein, first mapping table is the mapping table pre-saved in the base station, and first mapping table is used to indicate SINR, the correspondence between the number and data rate of RB can be used.
5. switching method according to claim 3, which is characterized in that the switching method further includes:
If the UE is less than or equal to the UE in the serving cell in the data rate of the downlink of the first community The data rate of downlink, then the measurement thresholding is reduced preset value by the base station, and the measurement thresholding after reduction is made For new measurement thresholding.
6. a kind of base station, which is characterized in that including:
Acquiring unit is the service that user equipment (UE) measurement obtains for obtaining the first Signal to Interference plus Noise Ratio SINR, the first SINR The SINR of cell;
The acquiring unit is additionally operable to obtain the 2nd SINR, and the 2nd SINR is the first community that the UE measurements obtain SINR, the first community are adjacent cell;
The acquiring unit, be additionally operable to obtain the number of the available resource block RB of the serving cell and the first community can With the number of RB;
Determination unit, of the available RB of the first SINR and the serving cell for being obtained according to the acquiring unit Number determines the data rate of downlinks of the UE in the serving cell, and according to described in acquiring unit acquisition The number of 2nd SINR and the available RB of the first community determine the number of downlinks of the UE in the first community According to rate;
Switch unit, if for the determination unit determine the UE the first community downlink data rate The UE determined more than the determination unit the downlink of the serving cell data rate, then by the UE from institute It states serving cell and switches to the first community.
7. base station according to claim 6, which is characterized in that the acquiring unit includes:
Sending module measures message for sending first to the UE, and the first measurement message is used to indicate the UE and measures The SINR of the serving cell;
Receiving module, the first measurement result sent for receiving the UE include described first in first measurement result SINR, the first SINR are the SINR for the serving cell that the UE measurements obtain.
8. base station according to claim 7, which is characterized in that the sending module, if it is small to be additionally operable to the first SINR In equal to thresholding is measured, then sends second to the UE and measure message, the second measurement message is used to indicate the UE and measures The SINR of second community, described second measures the mark and handoff threshold for including the second community in message, and described second is small Area is adjacent cell to be measured;
The receiving module is additionally operable to receive the second measurement result that the UE is reported, includes in second measurement result:Institute The mark of first community and the 2nd SINR are stated, the first community is in the second community that the UE measurements obtain SINR is more than the cell of the handoff threshold, and the 2nd SINR is the SINR for the first community that the UE measurements obtain.
9. according to the base station described in any one of claim 6-8, which is characterized in that the determination unit includes:
Searching module, of the available RB of the first SINR and the serving cell for being obtained according to the acquiring unit Number searches the first mapping table, obtains the first data rate, and first data rate is the UE in the serving cell The data rate of downlink;
The searching module is additionally operable to the available of the 2nd SINR obtained according to the acquiring unit and the first community The number of RB searches first mapping table, obtains the second data rate, and second data rate is the UE described the The data rate of downlink in one cell;
Wherein, first mapping table is the mapping table pre-saved in the base station, and first mapping table is used to indicate SINR, the correspondence between the number and data rate of RB can be used.
10. base station according to claim 8, which is characterized in that the base station further includes:
Updating unit, if for the determination unit determine the UE the first community downlink data rate Less than or equal to the determination unit determine the UE the serving cell downlink data rate, then by the survey Measuring thresholding reduces preset value, and using the measurement thresholding after reduction as new measurement thresholding.
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