WO2009100568A1 - 用户终端设备和用于该设备的网络接入方法 - Google Patents

用户终端设备和用于该设备的网络接入方法 Download PDF

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Publication number
WO2009100568A1
WO2009100568A1 PCT/CN2008/000239 CN2008000239W WO2009100568A1 WO 2009100568 A1 WO2009100568 A1 WO 2009100568A1 CN 2008000239 W CN2008000239 W CN 2008000239W WO 2009100568 A1 WO2009100568 A1 WO 2009100568A1
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Prior art keywords
antenna
user terminal
directional
performance parameter
antennas
Prior art date
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PCT/CN2008/000239
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English (en)
French (fr)
Inventor
Honghong Cai
Pengwu Liu
Original Assignee
Zte Corporation
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Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to EP08700758.9A priority Critical patent/EP2239867A4/en
Priority to PCT/CN2008/000239 priority patent/WO2009100568A1/zh
Priority to US12/865,083 priority patent/US20100329124A1/en
Publication of WO2009100568A1 publication Critical patent/WO2009100568A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868Hybrid systems, i.e. switching and combining
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686Hybrid systems, i.e. switching and simultaneous transmission
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0691Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868Hybrid systems, i.e. switching and combining
    • H04B7/0874Hybrid systems, i.e. switching and combining using subgroups of receive antennas
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868Hybrid systems, i.e. switching and combining
    • H04B7/088Hybrid systems, i.e. switching and combining using beam selection

Definitions

  • a simple WiMAX system diagram 100 includes two WiMAX user terminals SS (Subscriber Stations) 110 and 120 with an omnidirectional antenna covering a radius 160, a pattern 170. And three base stations BS (Base Station) 130, 140 and 150. As can be seen from the figure, the digital terminal 110 is within the coverage of the base station 130, that is, the digital terminal can access the network through the base station 130.
  • SS Subscriber Stations
  • BS Base Station
  • An object of the present invention is to provide a user terminal device and a network access method for the device, which can expand the coverage of the user terminal by using a selectable dynamic antenna to access the network and supplement the network coverage.
  • the user terminal device of the present invention includes: an antenna module, comprising: a plurality of directional antennas for accessing a network through one or more of a plurality of directional antennas; and a processor configured to set a direction of the directional antenna, according to each The performance parameters of the directional antennas are selected by a directional antenna of multiple directional antennas or a combination of multiple directional antennas to access the network.
  • the network access method for the user terminal device of the present invention includes: Step 1: The user terminal scans the downlink channel in each directional antenna direction of the user terminal device at predetermined time intervals to obtain performance parameters of each directional antenna; Step two, the user terminal constructs each directional antenna and its combination direction
  • the performance parameter table sorts and updates the performance parameters in the performance parameter table.
  • Step 3 The mobile terminal selects one antenna or a combination of multiple antennas for network access according to the performance parameter table.
  • the performance parameters include at least one of the following: a frame error rate, a received signal strength, and a signal to noise
  • Pre-timing - interval is 100 milli'.
  • the initialization values of the performance parameters in the performance parameter table are all zero. If the user terminal device includes a non-volatile storage device, the initialization value of the performance parameter in the performance parameter table is zero or the value of the performance parameter when the user terminal device was last turned off stored in the non-volatile storage device .
  • a currently used directional antenna or a combination of a plurality of directional antennas is not the best performing directional antenna or a combination of a plurality of directional antennas
  • the combination of the best performing directional antenna or directional antennas is selected when a plurality of performance parameters are better than a predetermined threshold of a corresponding performance parameter of the currently used directional antenna or combination of directional antennas.
  • the performance parameter table or a part of the performance parameters in the table is periodically updated according to the working state of the user terminal device.
  • the dynamic directional antenna device is used to replace the original omnidirectional antenna, and the control of the processor can obtain the transmission and reception farther than the omnidirectional antenna. Scope, which can better enhance the coverage of the network, improve the product 4 energy, and expand the scope of product use.
  • FIG. 1 is a schematic diagram of a user digital terminal system with an omnidirectional antenna in the prior art
  • FIG. 2 is a block diagram of a user terminal device of the present invention
  • FIG. 3 is a schematic diagram of a directional antenna of the device of the present invention. It is a flowchart of the method for the user terminal device of the present invention;
  • Figure 5 is a directional antenna of the present invention and a combination thereof;
  • Figure 6A and Figure 6B are directional antenna selection parameter tables of the present invention;
  • Figure ⁇ is a directional antenna selection flowchart of the present invention;
  • Figure 8 is a parameter of the present invention.
  • the user equipment of the present invention includes: an antenna module 202, including a plurality of directional antennas for accessing a network through one or more of a plurality of directional antennas; and a processor 204 for setting The direction of the directional antenna, the performance parameters of each directional antenna, the selection of one directional antenna of multiple directional antennas or a combination of multiple directional antennas to access the network.
  • the figure includes a digital terminal 310 and base stations 320, 330, 340.
  • the digital terminal 310 carries an omnidirectional antenna (radius 350, direction 360), it cannot access any of the base stations 320, 330, and 340.
  • the omnidirectional antenna is replaced by a series of directional antennas 310A-310H, which can reach a radius of 370, and 310A can be connected to the network through the range of the base station 330. Therefore, it can be seen that the user digital terminal with the directional antenna device can cover a larger distance than the original omnidirectional antenna coverage, thereby expanding the transmission and reception distance, and complementing the network coverage.
  • the network access method for a user terminal device of the present invention includes: Step S402: A user terminal scans a downlink channel in each directional antenna direction of a user terminal device at predetermined time intervals to obtain each orientation.
  • Step S404 the user terminal constructs a performance parameter table in each directional antenna and its combined direction and sorts and updates the performance parameters in the performance parameter table;
  • Step S406 the mobile terminal selects an antenna according to the performance parameter table Or a combination of multiple antennas for mesh intrusion.
  • Step S402 The user terminal scans the downlink channel in each directional antenna direction of the user equipment device at predetermined time intervals to obtain performance parameters of each directional antenna.
  • the first thing to explain is the time interval. This time interval selection has certain requirements. If the time is too long, then during the terminal movement, the terminal will have left the base station in a certain direction, and the processor is still in this.
  • the definition is ⁇ (mslT will be the same in other communication systems " ⁇ 11. Secondly, for the terminal, it is more likely that only one directional antenna is used at a certain moment. It is the simultaneous use of several directional antennas, which include two, three or even N antennas, as shown in Figure 5, assuming that the terminal contains three directional antennas A, B and C with phases that differ by 120 degrees, respectively. Medium 510 is the direction of the A antenna, and 520 is the direction of the B antenna.
  • Step S404 the user terminal constructs a performance parameter table in each directional antenna and its combined direction and sorts and updates the performance parameters in the performance parameter table. For performance differences in these antenna configurations, a parameter table is used as a judgment. According to
  • this table includes three parameters of frame error rate 610, received signal strength (RSSI) 620, and signal to noise ratio (CINR) 630 for each antenna configuration. These values are calculated from the data received by the processor from the network. The data in the table is the value measured for each antenna combination at a time, just as an example of this method.
  • Fig. 6A is a table of initial measurement values
  • Fig. 6B is a table after sorting. Illustrated in Figure 6A is a combination of three directional antennas A, B, and C, all of which contain seven combinations in addition to all of which are closed. The number of combinations is determined by the number of directional antennas.
  • the number of directional antennas is relatively large, for example, there are 8 directional antennas, the theoretical number of combinations is 255. If they are all arranged, it will be very large. The table will waste a lot of time when refreshing, so you should fully consider the possibility of directional antenna superposition when making the table. For the combination that does not generate superposition at all or the superimposed part is very weak, it may not be included in the table. . In this table, several parameters are selected instead of one as the basis for judgment, which fully takes into account the characteristics of this terminal antenna system. In general, the performance of the terminal receiving performance can be expressed from the frame error rate 610. However, if both antenna combinations successfully receive all the frame data, the frame error rate is 0.
  • This initial-initialization - can be - all zero, - can also be the last time - when the system is turned off - the specific choice, one can be determined according to the system's memory, if the system is set to non-volatile Storage devices (such as EEPROM or FLASH flash memory), etc., this table can also be saved after the system was last shut down, and used when the system is running again. This has the advantage of reducing the time it takes to search the network for the first time when the system is running. However, if the above storage device is not available in the system, this parameter table can only be initialized to all zeros.
  • Step S406 The mobile terminal selects one antenna or a combination of multiple antennas according to the performance parameter table to perform network access.
  • the method for selecting an antenna configuration in the method of the present invention includes the following steps: Step S702: Select an initial antenna configuration to synchronize with a base station, and the initial antenna configuration selection is based on a parameter table.
  • the parameter table contains the antenna configuration used last time. From this configuration, if there is no such information in the table, the scanning starts from the initial antenna direction defined by the system (such as a single directional antenna in the 0 degree direction).
  • Step S704 determining whether to perform update ordering of the parameter table. In general, the update order of the parameter table is performed periodically, but the update method is different depending on the current working condition of the terminal.
  • This antenna configuration starts working and the parameter table is updated and sorted during the next scan cycle.
  • the parameter table is updated and sorted into the antenna combination table as shown in FIG. 6B.
  • the selection of the antenna configuration depends on the ordering of the parameter table, but it is not completely in accordance with the ordering, and the interference needs to be considered, and the terminal is guaranteed to work. Under normal circumstances, the antenna configuration is frequently switched to a certain extent.
  • the best performance pointer points to the top-ranked antenna configuration, which currently points to the currently used antenna configuration.
  • the antenna configuration of the two pointers can be the same or different. In the same situation, it indicates that the antenna configuration currently in use is the most advanced antenna configuration.
  • the antenna parameter update ordering and the selection antenna configuration are associated, and each time the terminal performs parameter update and sorting, the current antenna configuration pointer and the best performance antenna configuration pointer are reset.
  • the antenna configuration is selected based on the two pointers. Steps S710 to S712, whether or not the parameter update sorting process is performed, once an antenna cooperation is selected, the processor switches its control to perform an operation of scanning the downlink channel.
  • the parameter table update ordering is periodic, the operation of updating the sorting is different depending on the working state of the terminal.
  • the general principle is to update the parameter table in a timely manner without affecting the current working state of the terminal.
  • the operation flow of the parameter update is as shown in FIG. 8: Step S802, selecting an antenna configuration that is not currently used.
  • Step S804 scanning the downlink channel and attempting to synchronize with the base station.
  • the wireless digital terminal product can be a series of wireless digital access devices such as a mobile phone, a CPE (Customer Premise Equipment) device, and a PCMCIA card.

Description

用户终端设备和
用于该设备的网络接入方法
-技-术领域— 本发明涉及无线通讯技术领域,尤其涉及一种用于 WiMAX ( Worldwide Interoperability for Microwave Access, 微波存取全球互通) 网络的用户终端 设备和用于该设备的网 ^^入方法。 背景技术 如图 1所示,一个简单的 WiMAX系统示意图 100,包括了两个 WiMAX 用户终端 SS ( Subscriber Station ) 110和 120, 其带有的是全向天线, 其覆盖 半径 160, 方向图 170。 以及 3个基站 BS ( Base Station ) 130, 140和 150。 从图中可以看出, 数字终端 110在基站 130的覆盖范围内, 也就是说, 数字终端可以通过基站 130接入网络。 而数字终端 120不在任何一个基站范 围内, 从理论上说, 数字终端 120在其当前位置上, 无法接入网络进行使用。 这样就会导致通信的不正常, 所有与网络相关的业务都无法进行, 包括电话 的呼入呼出、 短消息的发送接收以及网页的浏览、 数据的上传下载等等, 都 无法正常工作。 发明内容 本发明的目的在于提供一种用户终端设备和用于该设备的网络接入方法, 利用可选择的动态天线扩大用户终端的覆盖范围, 以接入网络, 对网络覆盖进 行补充。 本发明的用户终端设备, 包括: 天线模块, 包括多个定向天线, 用于通过 多个定向天线中的一个或多个来接入网络;处理器,用于设定定向天线的方向, 根据每个定向天线的性能参数, 选择多个定向天线的一个定向天线或多个定向 天线的组合来接入网络。 本发明的用于用户终端设备的网络接入方法, 包括: 步骤一, 用户终端以 预定时间间隔扫描用户终端设备的每个定向天线方向上的下行信道, 以获取每 个定向天线的性能参数; 步骤二, 用户终端构造每个定向天线及其组合方向上 的性能参数表格并对性能参数表格中的性能参数进行排序和更新; 步骤三, 移 动终端根据性能参数表格选择一个天线或多个天线的组合进行网络接入。 其中, 性能参数包括以下至少之一: 误帧率、 接收信号强度以及信噪比。
-预-定时-间间隔为 100毫 '。 其中, 如果用户终端设备不具有非易失性存储设备, 则性能参数表格中的 性能参数的初始化值均为零。 如果用户终端设备包括非易失性存储设备, 则性 能参数表格中的性能参数的初始化值均为零或为存储在非易失性存储设备中 的上次关闭用户终端设备时的性能参数的值。 其中,在当前使用的定向天线或多个定向天线的组合不是性能最好的定向 天线或多个定向天线的组合的情况下, 当性能最好的定向天线或多个定向天线 的组合的一个或多个性能参数优于所述当前使用的定向天线或多个定向天线 的组合的对应性能参数的预定阈值时, 选择所述性能最好的定向天线或多个定 向天线的组合。 其中,根据用户终端设备的工作状态, 周期性地更新性能参数表格或该表 格中的一部分性能参数。 通过本发明提供的用户终端设备和用于该设备的网 入方法,利用动 态的定向天线装置替代原有的全向天线, 加上处理器的控制, 可以获取比全 向天线更远的发射接收范围, 从而能够更好的增强网络的覆盖, 提升了产品 4生能, 拓展产品使用范围。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不 当限定。 在附图中: 图 1为现有技术中带有全向天线的用户数字终端系统示意图; 图 2是本发明的用户终端设备框图; 图 3是本发明的设备的定向天线的示意图; 图 4是本发明的用于用户终端设备的网绍 έ入方法流程图; 图 5是本发明的定向天线及其组合的方向图; 图 6A和图 6B是本发明的定向天线选择参数表; 图 Ί是本发明的定向天线选择流程图; 以及 图 8是本发明的参数更新的流程图。 具体实施方式 下面参考附图, 详细说明本发明的具体实施方式。 如图 2所示, 本发明的用户终端设备包括: 天线模块 202 , 包括多个定向 天线, 用于通过多个定向天线中的一个或多个来接入网络; 处理器 204, 用于 设定定向天线的方向, 居每个定向天线的性能参数, 选择多个定向天线的一 个定向天线或多个定向天线的组合来接入网络。 如图 3所示, 图中包括有数字终端 310和基站 320、 330、 340。 从图中可 以看到, 如果数字终端 310带有的是全向天线 (半径 350, 方向 360 ), 那么其 无法接入基站 320、 330 以及 340 中的任何一个。 而: ¾口果用一系列定向天线 310A-310H来替代全向天线, 其半径可以达到 370 , 则其中的 310A在基站 330 的范围中, 就可以通过其接入网络。 因此可以看出, 带有此定向天线装置的用 户数字终端, 可以覆盖的距离要大于原有全向天线覆盖的范围, 从而扩大其发 射接收距离, 对网络覆盖起到了很好的补充。 如图 4所示,本发明的用于用户终端设备的网络接入方法包括:步骤 S402, 用户终端以预定时间间隔扫描用户终端设备的每个定向天线方向上的下行信 道, 以获取每个定向天线的性能参数; 步骤 S404, 用户终端构造每个定向天线 及其组合方向上的性能参数表格并对性能参数表格中的性能参数进行排序和 更新; 步骤 S406, 移动终端根据性能参数表格选择一个天线或多个天线的组合 进行网 矣入。 下面详细力 ø以说明。 步骤 S402 , 用户终端以预定时间间隔扫描用户终端设备的每个定向天线 方向上的下行信道, 以获取每个定向天线的性能参数。 首先要说明的是时间间隔, 这个时间间隔选取是有一定的要求的,如果时 间太长,那么在终端移动过程中,会出现终端已经离开了某一个方向上的基站, 而处理器依旧在这个方向上与基站通信, 会导致掉网情况发生, 而如果时间太 短, 会占用过多处理器资源, 使处理器长时间工作, 增大功耗。 在 WiMAX系 不 定义 ΐϊ ¾·间是 ϊδδ~ί ( mslT在其他的通信系统 「^11会有 同。 其次, 对于终端来说, 某一个时刻并不是只使用了某一个定向天线, 更有 可能的是同时使用了几个定向天线, 这包括两个、 三个乃至 N个天线, 如图 5 所示, 假设此终端含有 3个定向天线 A、 B和 C, 其相位分别相差 120度, 图 中 510是 A天线的方向图, 520是 B天线的方向图, 如果天线 A、 B同时打开, 就会产生如 530的方向图, 在这个方向上, 有可能获取比 A、 B天线都要好的 网络。 步骤 S404, 用户终端构造每个定向天线及其组合方向上的性能参数表格 并对性能参数表格中的性能参数进行排序和更新。 对于这些天线配置上的性能差异, 用一个参数表格作为判断依据。 如图
6A所示, 这个表格中针对每一种天线配置, 都包含了误帧率 610、 接收信号强 度(RSSI ) 620以及信噪比 (CINR ) 630这三个参数。 这些值都是处理器 居 从网络接收来的数据计算而成。 表格中的数据是某一时刻各个天线组合测得的 值, 仅仅作为这种方法的示例说明。 图 6A是初始测量值表格, 图 6B是排序后 的表格。 图 6A中列举的是 3个定向天线 A、 B和 C的组合, 除却全部关闭这种组 合之外, 一共包含了 7种组合。 组合的数目是由定向天线的数目来决定的, 如 果定向天线的数目比较多, 例如定向天线有 8个, 其理论上的组合个数有 255 个, 如果都排列在内, 会是一个非常大的表格, 刷新的时候会浪费很多时间, 因此在制作表格的时候要充分考虑定向天线叠加的可能性, 对于根本不会产生 叠加或者叠加部分非常 4啟弱的组合, 可以不包含在表格之中。 在这个表格中,选择了几个参数而不是一个作为判断依据,是充分考虑到 了这个终端天线系统的特性。 一般来说, 终端接收性能的好坏, 可以从误帧率 610上来表达, 但是对于某两个天线组合, 如果其都成功收到了所有的帧数据, 表明其误帧率是都是 0, 此时就要利用接收信号强度 620或者信噪比 630来判 断这两个天线配置的差异了。 如图 6表格中的组合 1和组合 4, 在其误帧率都 是 0的情况下, 通过 RSSI的不同可以判断出组合 4的性能优于组合 1。 这个参数表格在系统刚刚开始运行的时候, 是由处理器来进行初始化的。 这个初-始化的值—可-以全为零,—也可以是上次 -关闭系统时—的值,具体选择哪 ,一 可以根据系统的存储器来决定, 如果系统设置有非易失性存储设备 (如 EEPROM或 FLASH闪存)等, 那么在上次关闭系统后这个表格也可以被保存 起来, 已备系统再次运行的时候使用, 这样的好处是可以减少系统运行时初次 搜索网络的时间。 但是如果系统中没有上述存储设备, 则这个参数表格只能是 被初始 b为全零。 步骤 S406, 移动终端根据性能参数表格选择一个天线或多个天线的组合 进行网^ ^入。 本发明的方法选择天线配置的过程, 如图 7所示, 包括如下步骤: 步骤 S702, 选定某一个初始的天线配置, 与基站进行同步, 这个初始的 天线配置选择是依据参数表格的, 如果参数表格中包含了上次使用的天线配 置, 则从这个配置开始, 如果表格中没有这个信息, 则从系统定义的初始天线 方向 (如 0度方向上单一定向天线等) 上开始扫描。 步骤 S704, 判断是否进行参数表格的更新排序。 一般情况下, 参数表格 的更新排序是周期性进行的, 但是根据当前终端所处的工作状况不同, 其更新 的方式也有所不同。 步骤 S706至步骤 S708 , 系统初始化时, 如果当前参数表格中没有保存有 上次运行的参数, 为了快速接入网络, 不进行参数更新, 当扫描到某一种天线 配置能够正常工作后, 就选择这个天线配置开始工作, 在下一个扫描周期的时 候才会更新参数表格并排序。 初始化成功, 参数表格被更新排序成如图 6B所示的天线组合表格, 对天 线配置的选择依赖与这个参数表格的排序, 但不完全是依照这个排序, 需要考 虑干扰的情况, 在保证终端工作正常的情况下, 一定程度上避免频繁的切换天 线配置。 为了达到这个目的,可以设置两个指针向量: 性能最好指针以及当前使用 指针。 性能最好指针指向排序最靠前的天线配置, 当前使用指针指向当前使用 的天线配置。 这两个指针所指天线配置可以一样, 也可以不一样。 在一样的情 况下, 表明当前使用的天线配置就是排序最靠前的天线配置。 而当不一样时, 蕞靠 夫^ 不是^ 使用 ό ϊί¾, 表 其^^ ¾配置 生 ί ¾ 于当前的天线配置, 需要注意的是, 就是在这种情况下, 也不是立即将当前使 用指针指向排序最前的天线配置, 而是设有一个阈值 (如误帧率的差值 <3% ), 只有当排序最前的天线配置的某个参数性能高于当前使用天线配置这个阈值 之后, 才会将当前使用指针指向排序最前的天线配置。 在这种情况下, 可以保 证在工作正常的情况下尽量少的切换天线配置, 避免干扰。 这样一来, 就将天线参数更新排序和选择天线配置联系起来,在每次终端 执行参数更新并排序之后, 重新设置当前使用天线配置指针和性能最好天线配 置指针。 而当终端工作时, 就依据这两个指针来选择天线配置。 步骤 S710至步骤 S712, 不论是否进行了参数更新排序过程, 一旦选定了 某个天线配合, 就又处理器对其控制进行开关, 执行扫描下行信道的操作。 参数表格更新排序虽然是周期性的,但根据终端工作状态不同, 更新排序 的操作也有所不同。 总的原则是在不影响终端当前工作状态的情况下, 及时的 更新参数表格。 参数更新的操作流程, 如图 8所示: 步骤 S802, 选择一个当前没有使用的天线配置。 步骤 S804, 扫描下行信道, 尝试与基站同步。 步骤 S806, 接下来判断是否能与基站同步, 如果能够与基站同步, 则进 行步骤 S808至步骤 S816的操作, 从基站获取信息, 分别计算误帧率、 接收信 号强度 RSSI和信噪比并进行更新排序,在这些动作完成之后,进入步骤 S818, 选择下一个没有使用的天线配置, 从步骤 S804开始执行。 而如果本次的天线配置无法与基站同步, 则执^ "步骤 S810, 在清除当前 参数之后, 直接进入 S818, 选择下一个天线配置重新开始。 在每一个未用天线 配置都被扫描过后, 就能得到一个如图 6Β所示的排过序后的表格, 这个表格 可以作为终端选择天线配置的直接依据。 需要说明的是, 尽管每次更新的过程是一样的, 但是根据终端状态不同, 更新的天线配置数目是不同的。 这个依据就是本次扫描时终端是否处于工作过 程之中, 如果处于工作之中, 正在发送或者接收数据, 此时为了保证更新过程 不影响当前的工作状态, 可以只选取当前可以接入网络的天线配置进行更新, 菜可以接 词络的 配置比 ¾多, 也可 K选取 ^―几个# ¾靠箭^― 进行更新。 表现在如图 6B所示的表格中, 则是仅仅更新前 4个天线组合的参 数。 如果当前终端处于空闲模式, 没有工作,那么就可以进行全部天线组合参 数的更新操作, 对所有的天线组合都进行图 8的操作, 形成一个完整的参数更 新以及排序表格。 表现在如图 6B所示的表格中, 则是更新全部天线组合的参 数。 本发明所述方法和技术具有较大的通用性, 除了可以应用在 WiMAX 网 络下,对其他提供无线接入功能的 GSM、 CDMA. PHS、 WCDMA、 TD-SCDMA 等网络都是可以的。并且无线数字终端产品可以是手机、 CPE( Customer Premise Equipment ) 设备、 PCMCIA卡等一系列无线数字接入设备。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领 i或的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 4'奇神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书
1. 一种用户终端设备, 其特征在于, 包括:
天线模块, 包括多个定向天线, 用于通过所述多个定向天线中的一 个或多个来接入网络; 以及
处理器, 用于设定所述定向天线的方向, »据所述每个定向天线的 性能参数, 选择所述多个定向天线的一个定向天线或多个定向天线的组 合来接入网络。
2. 根据权利要求 1所述的用户终端设备, 其特征在于, 所述性能参数包括 以下至少之一: 误帧率、 接收信号强度以及信噪比。
3. 一种用于权利要求 1或 2所述的用户终端设备的网络接入方法, 其特征 在于, 所述方法包括:
步骤一,所述用户终端以预定时间间隔扫描所述用户终端设备的每 个定向天线方向上的下行信道, 以获取每个定向天线的性能参数; 步骤二,所述用户终端构造所述每个定向天线及其组合方向上的性 能参数表格并对所述性能参数表格中的性能参数进行排序和更新; 以及 步骤三,所述移动终端根据所述性能参数表格选择所述一个天线或 多个天线的组合进行网络接入。
4. 根据权利要求 3所述的网络接入方法, 其特征在于, 所述性能参数包括 以下至少之一: 误帧率、 接收信号强度以及信噪比。
5. 根据权利要求 4所述的网络接入方法, 其特征在于, 如果所述用户终端 设备不具有非易失性存储设备, 则所述性能参数表格中的性能参数的初 始化值均为零。
6. 根据权利要求 4所述的网络接入方法, 其特征在于, 如果所述用户终端 设备包括非易失性存储设备, 则所述性能参数表格中的性能参数的初始 化值均为零或为存储在所述非易失性存储设备中的上次关闭所述用户终 端设备时的性能参数的值。
7. 根据权利要求 5或 6所述的网络接入方法, 其特征在于, 在当前使用的 - 定向天线或多个定向天线的组合不是性能最好的定向天线或多个定向夫 线的组合的情况下, 当性能最好的定向天线或多个定向天线的组合的一 个或多个性能参数优于所述当前使用的定向天线或多个定向天线的组合 性能参 ^定阈 ,— 择 ¾¾最^ ^ 线或多—^ 向天线的组合。
8. 根据权利要求 7所述的网络接入方法, 其特征在于, 根据所述用户终端 设备的工作状态, 周期性地更新所述性能参数表格。
9. 根据权利要求 8所述的网 入方法, 其特征在于, 根据所述用户终端 设备的工作状态,周期性地更新所述性能参数表格中的一部分性能参数。
10. 根据权利要求 9所述的网络接入方法, 其特征在于, 所述预定时间间隔 为 100毫秒。
PCT/CN2008/000239 2008-01-30 2008-01-30 用户终端设备和用于该设备的网络接入方法 WO2009100568A1 (zh)

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