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WO2011144045A2 - 资源复用方法和装置、切换方法和装置 - Google Patents

资源复用方法和装置、切换方法和装置 Download PDF

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Publication number
WO2011144045A2
WO2011144045A2 PCT/CN2011/074346 CN2011074346W WO2011144045A2 WO 2011144045 A2 WO2011144045 A2 WO 2011144045A2 CN 2011074346 W CN2011074346 W CN 2011074346W WO 2011144045 A2 WO2011144045 A2 WO 2011144045A2
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WO
WIPO (PCT)
Prior art keywords
scrambling code
cell
multiplexed
multiplexing
code phase
Prior art date
Application number
PCT/CN2011/074346
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English (en)
French (fr)
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WO2011144045A3 (zh
Inventor
邓爱林
徐斌斌
任远
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2011/074346 priority Critical patent/WO2011144045A2/zh
Priority to CN2011800005777A priority patent/CN102204313B/zh
Priority to JP2014510635A priority patent/JP5745166B2/ja
Publication of WO2011144045A2 publication Critical patent/WO2011144045A2/zh
Publication of WO2011144045A3 publication Critical patent/WO2011144045A3/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0061Transmission or use of information for re-establishing the radio link of neighbour cell information

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a resource multiplexing method and apparatus, a switching method, and an apparatus. Background technique
  • the network structure of (Macro Ce l l ) is covered, and the coverage radius of the macro cell is generally 1 km to tens of kilometers. As the number of network users increases, the capacity of macro cells cannot meet the traffic demand. In order to compensate for the insufficient capacity of the macro cell, micro-cells (Micro-Cell) or pico-cells (Pico-Cel) are generally used for coverage in hotspot areas. In order to improve the quality of indoor coverage, indoor coverage is also covered by microcells or picocells. As shown in FIG.
  • cell A is a macro cell, and cells B, C, D, and E are micro cells; and the base station controller allocates scrambling codes for cells A, B, C, D, and E (Pseudo-Noi se code).
  • scrambling codes for short
  • PN code for short
  • the base station controller is configured with a neighbor list, and the neighbor list of the cell A is configured with cells B, C, D, E adjacent to the cell A.
  • the protocol has restrictions on the number of neighboring cells (the general agreement stipulates that IS-95 mobile phones support 20 neighboring cells, and IS-2000 supports 40 neighboring cells); the base station controller also configures neighboring cells for cells B, C, D, and E. List.
  • each building is equipped with a cellular system to form a microcell.
  • the neighbor list is more and more inflated.
  • the neighbor relationship to be planned exceeds the number of neighbors specified in the protocol, the neighbor relationship of some cells cannot be added to the neighbor list, causing the handover failure.
  • each micro cell is assigned a PN code, but the PN code resources are limited (512) and cannot be allocated without limit.
  • An embodiment of the present invention provides a resource multiplexing method and apparatus, a switching method, and an apparatus. To achieve the above object, an embodiment of the present invention uses the following technical solutions:
  • a resource reuse method including: A multiplexing scrambling code is allocated for each cell, the multiplexing scrambling code includes a scrambling code and an offset; and the neighboring cell list is configured for the cell by using the multiplexing scrambling code.
  • a resource multiplexing device includes:
  • a multiplexing scrambling code allocation module configured to allocate a multiplexing scrambling code for each cell, where the multiplexing scrambling code includes a scrambling code and an offset;
  • the neighbor list configuration module is configured to configure a neighbor list for the cell by using the multiplexing scrambling code.
  • the prior art uses the PN code to distinguish different cells A and B.
  • the cellular small A and B can respectively allocate the PN codes X and Y, and occupy two scrambling codes.
  • the embodiment of the present invention uses the multiplexing scrambling code to distinguish different cells. B, for example, the cell A assigns a multiplexing scrambling code to: X minus offset; assigns a multiplexing scrambling code to cell B as: X plus offset.
  • Cell and B use the same scrambling code, which saves scrambling resources and reduces the planning pressure of neighbors.
  • the offset can be set according to the specific situation, and the offset increase and offset reduction of different cells can be different.
  • a switching method includes:
  • the terminal moves from the source cell to the target cell
  • the multiplexed scrambling code phase of the destination cell is sent; and the handover indication message sent by the base station controller is received.
  • a switching method includes:
  • a switching device includes:
  • a receiving module configured to receive a multiplexed scrambling code phase of the destination cell
  • a correction module configured to correct the multiplexed scrambling code phase, and obtain a modified multiplexed scrambling code phase
  • An identifying module configured to determine whether the modified multiplexed scrambling code phase is in a scrambling code identification interval of the destination cell
  • a sending module if the output of the identifying module is: modifying the scrambling code phase in the scrambling code identification interval of the destination cell, the sending module is configured to send a handover indication message to the terminal.
  • the multiplexed scrambling code phase is corrected and then identified, and the recognition error is reduced; the switching indication is sent according to the identification result, and the handover success rate is improved.
  • FIG. 1 is a schematic diagram of a distribution of a cell according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a resource multiplexing method according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a resource multiplexing device according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a handover method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an identification interval of a part of a cell according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a switching device according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a resource reuse method. As shown in Figure 2, the method includes:
  • the multiplexing scrambling code includes a scrambling code and a bias.
  • Each cell is assigned a PN code. As shown in Figure 1, the cells, B, C, D, and E occupy five scrambling codes X, Y, Z, U, and V.
  • the multiplexed scrambling code includes a scrambling code and an offset, and the offset may be 1, 2, 3... chips, and different cell offset increments and offset reductions may be different, and the offset may be set according to specific conditions.
  • the multiplexed scrambling code Y+lchi p is allocated to the cell B; the multiplexed scrambling code Y1 chip is allocated to the cell C; the multiplexed scrambling code Y+3chip is allocated to the cell D; and the cell E is allocated. Multiplexed code Y_3chip.
  • 202 Configure a neighbor list for the cell by using the multiplexing scrambling code.
  • the neighboring list configuration principle a.
  • the directly adjacent cells in the geographical location generally need to be neighbors;
  • the neighboring areas generally require mutual neighboring areas, that is, the carrier frequency of the A cell uses B as the neighboring area, and B also needs to A is a neighboring area;
  • c For dense urban areas, because the station spacing is relatively close (0.5 to 1.5 km), the neighboring area should do more.
  • the PN code resources are limited (512) and cannot be allocated without restrictions.
  • the multiplexed scrambling code By using the multiplexed scrambling code to configure the neighbor list for the cell, it satisfies the requirement that the neighboring area should do more and save the PN code resource.
  • step 201 the cells ⁇ C, D, E occupy only one scrambling code, but can represent four cells in the neighbor list.
  • the resource multiplexing method further includes: a step of configuring a search window parameter.
  • the search window parameters should be configured reasonably.
  • the parameters cannot be configured too large or configured too small; the parameters are configured too large. If the parameter configuration is too large, some extraneous signals will also fall within the search window, affecting the link quality.
  • the larger search window will also make the mobile phone search for adjacent pilots slower; the parameters are configured too small.
  • the useful set of the active set signals will fall outside the search window. The active set signals that are missing outside the window may become interference, which may seriously affect the link quality.
  • the embodiment of the present invention configures the search window parameters to two. Chip.
  • the embodiment of the present invention further provides a resource multiplexing device.
  • the device includes: a multiplexing scrambling code allocation module 301, configured to allocate a multiplexing scrambling code for each cell, and the multiplexing interference
  • the code includes a scrambling code and an offset;
  • the neighbor list configuration module 302 is configured to configure a neighbor list for the cell by using the multiplexing scrambling code.
  • the cell includes a macro cell, a micro cell, and a pico cell; the offset is 1 chip.
  • the resource multiplexing device of the embodiment of the present invention further includes: a parameter configuration module, configured to configure a search window parameter; and the embodiment of the present invention configures the search window parameter as two chips.
  • the resource multiplexing method of the embodiment of the invention saves the scrambling code resources and reduces the planning pressure of the neighboring area.
  • the embodiment of the invention further provides a handover method.
  • the application scenario of the method The terminal moves from the source cell to the target cell, and sends the multiplexed scrambling code phase of the destination cell to the base station controller.
  • the switching method includes the following steps:
  • the clocks of the cells A and D are referenced to the system time (ie, GPS GPS); the clock of the terminal is related to the transmission delay of the cell in which it is located; in the present invention, the terminal is from cell A.
  • Switch to Cell D; Cell A provides service to the terminal before the handover is completed, assuming m is the transmission delay of the signal within Cell A.
  • the terminal transmits the multiplexed scrambling code phase to the cell D.
  • the base station controller corrects and restores the phase of the multiplexed PN code, and the PNphase plus the transmission delay m in the cell A is multiplexed with the 4th code phase PN ⁇ *64 + 3+ ⁇ , since the handover has not been completed, the terminal There is no communication channel established with the mobile phone, so ⁇ cannot be corrected.
  • the base station and the mobile phone have a same neighbor list, and the neighbor list lists adjacent cells, and each cell corresponds to an identification interval.
  • the starting end point of the scrambling code identification interval of the destination cell is the multiplex scrambling code of the destination cell minus W chips, and the terminating end point is the multiplexing scrambling code of the destination cell plus Z chips, where W and Z are Natural number.
  • W and Z are Natural number.
  • the values of W and Z may be the same or different.
  • the multiplexed scrambling code phase PNphase ⁇ ⁇ * 64 + 3 + n falls within the scrambling code identification interval (PN Y+2 , PN Y+ 4 ) of the destination cell D (as shown in FIG. 5, since n cannot be corrected) Therefore, the arrow representing the multiplexed scrambling code phase has a certain interval from the center of the interval;), and the handover indication message is sent to the terminal. Adding the destination cell to an active set of the terminal.
  • the terminal receives the handover indication message sent by the base station controller, and performs handover.
  • the multiplexed scrambling code phase is corrected and then identified, and the recognition error is reduced; the switching indication is sent according to the recognition result, and the handover success rate is improved.
  • the embodiment of the invention further provides a switching device, as shown in FIG. 6, comprising:
  • a receiving module 601 configured to receive a multiplexed scrambling code phase of the destination cell
  • a correction module 602 configured to modify the multiplexed scrambling code phase to obtain a modified multiplexed scrambling code phase
  • an identification module 603, configured to determine whether the modified multiplexed scrambling code phase is in a scrambling code identification interval of the destination cell
  • the sending module 604 is configured to: if the output of the identifying module is: correcting the scrambling code phase in the scrambling code identification interval of the target cell, the sending module is configured to send a handover indication message to the terminal.
  • the multiplexing scrambling code phase is the target cell scrambling code multiplied by the offset of the 64-plus-target cell minus the source cell transmission delay; the starting endpoint of the scrambling code identification interval of the destination cell is the multiplexing of the destination cell.
  • the scrambling code is reduced by W chips, and the terminating end point is a multiplexing scrambling code of the destination cell plus Z chips, where w and z are natural numbers.
  • W and Z may be the same or different. .
  • the modifying the multiplexed scrambling code phase includes a transmission delay of the multiplexed scrambling code phase plus source cell.
  • the multiplexed scrambling code phase is corrected and then identified, and the recognition error is reduced; the switching indication is sent according to the identification result, and the handover success rate is improved.

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

Abstract

本发明公开了一种资源复用方法和装置、切换方法和装置。该资源复用方法包括:为每个蜂窝小区分配复用扰码,所述复用扰码包括扰码和偏置(201);使用所述复用扰码为蜂窝小区配置邻区列表(202)。本发明节省了扰码资源,减轻了邻区规划压力。本发明可用于微蜂窝、pico基站、Femto基站等室内覆盖系统。

Description

资源复用方法和装置、 切换方法和装置 技术领域
本发明涉及通信技术领域, 尤其涉及资源复用方法和装置、 切换方法和 装置。 背景技术
在移动通信网络的建网初期, 由于用户数比较少, 一般釆用宏蜂窝
( Macro Ce l l ) 的网络结构进行覆盖, 宏蜂窝小区的覆盖半径一般在 1 公 里到几十公里。 随着网络用户数的增加, 宏蜂窝的容量不能满足业务量需求。 为了弥补宏蜂窝的容量不足, 一般在热点地区釆用微蜂窝 ( Micro - Ce l l ) 或微微蜂窝 ( Pico - Ce l l )进行覆盖。 为了提高室内覆盖质量, 一般室内 覆盖也釆用微蜂窝或微微蜂窝进行覆盖。 如图 1所示, 小区 A为宏蜂窝小区, 小区 B、 C、 D、 E为微蜂窝小区; 基站控制器为小区 A、 B、 C、 D、 E分配有扰 码(Pseudo-Noi se code , 简称 PN码) X、 Y、 Ζ、 U、 V; 基站控制器配置有邻 区列表, 小区 A的邻区列表配置有与小区 A相邻的小区 B、 C、 D、 E。 协议对 邻区个数有限制 (一般协议规定 IS-95手机支持 20个邻区, IS-2000支持 40 个邻区,); 基站控制器为小区 B、 C、 D、 E也配置有邻区列表。
在通信业务繁忙的地区(如北京西单地区),每个大楼内都设有啟蜂窝系 统, 形成微蜂窝小区。 从而造成邻区列表越来越膨胀, 当需要规划的邻区关 系超过协议上规定的邻区个数时, 必将造成一部分蜂窝小区的相邻关系无法 加入到邻区列表,从而引起切换失败。 同时,每个微蜂窝小区分配一个 PN码, 但是 PN码资源有限(512个), 不能无限制的分配。 发明内容
本发明的实施例提供一种资源复用方法和装置、 切换方法和装置; 为达到上述目的, 本发明的实施例釆用如下技术方案:
一种资源复用方法, 包括: 为每个蜂窝小区分配复用扰码, 所述复用扰码包括扰码和偏置; 使用所述复用扰码为蜂窝小区配置邻区列表。
一种资源复用装置, 包括:
复用扰码分配模块, 用于为每个蜂窝小区分配复用扰码, 所述复用扰码 包括扰码和偏置;
邻区列表配置模块, 用于使用所述复用扰码为蜂窝小区配置邻区列表。 现有技术使用 PN码区分不同蜂窝小区 A、 B , 例如, 蜂窝小 A、 B可以 分别分配 PN码 X、 Y , 要占用两个扰码; 本发明实施例使用复用扰码区分不同 蜂窝小区 、 B , 例如, 蜂窝小区 A分配复用扰码为: X减偏置; 为蜂窝小区 B 分配复用扰码为: X加偏置。 蜂窝小区 、 B使用同一个扰码, 节省了扰码资 源, 减轻了邻区规划压力。
偏置可以根据具体情况进行设置, 并且不同小区偏置增加量和偏置减少 量可以不同。
一种切换方法, 包括:
终端从源小区, 向目的小区移动;
搜索到目的小区的导频信号;
当导频信号质量大于切换阈值时, 发送目的小区的复用扰码相位; 接收基站控制器发送的切换指示消息。
一种切换方法, 包括:
接收目的蜂窝小区的复用扰码相位;
修正所述复用扰码相位, 得到修正复用扰码相位;
判断所述修正复用扰码相位是否在目的蜂窝小区的扰码识别区间; 如果所述修正复用扰码相位在目的蜂窝小区的扰码识别区间, 向终端发 送切换指示消息。
一种切换装置, 包括:
接收模块, 用于接收目的蜂窝小区的复用扰码相位;
修正模块, 用于修正所述复用扰码相位, 得到修正复用扰码相位; 识别模块, 用于判断所述修正复用扰码相位是否在目的蜂窝小区的扰码 识别区间;
发送模块, 如果所述识别模块的输出结果为: 修正复用扰码相位在目的 蜂窝小区的扰码识别区间, 所述发送模块用于向终端发送切换指示消息。
本发明实施例对复用扰码相位进行修正后再识别, 减小了识别误差; 根 据识别结果发送切换指示, 提高了切换成功率。 附图说明
图 1为本发明实施例蜂窝小区分布示意图;
图 2为本发明实施例资源复用方法流程图;
图 3为本发明实施例资源复用装置结构示意图;
图 4为本发明实施例切换方法流程图;
图 5为本发明实施例部分蜂窝小区的识别区间示意图;
图 6为本发明实施例切换装置结构示意图。 具体实施方式
为了节省扰码资源, 减轻邻区规划压力, 本发明实施例提供一种资源复 用方法。 如图 2所示, 该方法包括:
201、 为每个蜂窝小区分配复用扰码, 所述复用扰码包括扰码和偏置; 在 IS-95A CDMA系统中, PN码的周期是 32768码片 ( chip ),每隔 64 chip 进行划分,得到了 512 (= 32768 / 64)个不同相位的 PN码。
为每个蜂窝小区分配一个 PN码, 如图 1所示, 蜂窝小区 、 B、 C、 D、 E 占有 5个扰码 X、 Y、 Z、 U、 V。
所述复用扰码包括扰码和偏置, 偏置可以为 1、 2、 3…个码片, 不同小区 偏置增加量和偏置减少量可以不同, 偏置可以根据具体情况进行设置。如图 1 所示, 为蜂窝小区 B 分配复用扰码 Y+lchi p; 为蜂窝小区 C 分配复用扰码 Y-l chip; 为蜂窝小区 D分配复用扰码 Y+3chip; 为蜂窝小区 E分配复用扰码 Y_3chip。 202、 使用所述复用扰码为蜂窝小区配置邻区列表。
邻区列表配置原则: a、 地理位置上直接相邻的小区一般要作为邻 区; b、 邻区一般都要求互为邻区, 即 A蜂窝小区载频把 B作为邻区, B也 要把 A作为邻区; c、 对于密集市区, 由于站间距比较近(0. 5 ~ 1. 5公里), 邻区应该多做。 PN码资源有限(512个), 不能无限制的分配。
使用复用扰码为蜂窝小区配置邻区列表, 就同时满足了邻区应该多做, 又要节省 PN码资源的要求。
从步骤 201可以看出: 蜂窝小区^ C、 D、 E只占用了 1个扰码, 但是在 邻区列表可以表示四个蜂窝小区。
本发明技术方案同时也适用于宏蜂窝小区、 微蜂窝小区和微微蜂窝小区。 为了保证终端能够搜索到使用扰码 Y的所有蜂窝小区 B、 C、 D、 E , 所述 资源复用方法还包括: 配置搜索窗参数的步骤。
搜索窗参数要配置的合理, 该参数不能配置得太大, 也不能配置得太小; 参数配置得太大。 该参数配置太大, 会造成某些无关信号也落在搜索窗口之 内, 影响链路质量; 较大的搜索窗口, 还会使得手机搜索相邻导频的速度变 慢; 参数配置得太小, 会造成部分有用的激活集信号落在搜索窗口之外, 这 些遗漏在窗口之外的激活集信号会变成干扰, 可能严重影响链路质量; 本发 明实施例将搜索窗参数配置为 2个码片。
本发明实施例还提供了一种资源复用装置, 如图 3所示, 该装置包括: 复用扰码分配模块 301 , 用于为每个蜂窝小区分配复用扰码, 所述复用扰 码包括扰码和偏置;
邻区列表配置模块 302 , 用于使用所述复用扰码为蜂窝小区配置邻区列 表。
所述蜂窝小区包括宏蜂窝小区、 微蜂窝小区和微微蜂窝小区; 所述偏置 为 1个码片。
本发明实施例资源复用装置还包括: 参数配置模块, 用于配置搜索窗参 数; 本发明实施例将所述搜索窗参数配置为 2个码片。 本发明实施例资源复用方法节省扰码资源, 减轻了邻区规划压力。
本发明实施例还提供了一种切换方法。 该方法应用场景: 终端从源小区 向目的小区移动, 向基站控制器发送目的蜂窝小区的复用扰码相位。 如图 4 所示, 该切换方法包括如下步骤:
401、 接收目的蜂窝小区的复用扰码相位;
基站控制器接收蜂窝小区 D的复用扰码相位, PNpha se =PN Y*64 + 3- m;
402、 修正所述复用扰码相位, 得到修正复用扰码相位;
基站控制器根据蜂窝小区 A的传输时延, 对所述复用扰码相位进行修正, 得到修正复用扰码相位 PNpha s e =PN Y*64 +3;
4爹正过程如下:
蜂窝小区 A、 D 的时钟, 参照系统时间 (即全球定位系统 GPS G loba l Pos i t ioning Sys tem ); 终端的时钟与所在小区的传输时延有关系; 在本发明 中, 终端从蜂窝小区 A向蜂窝小区 D切换; 在切换完成之前, 蜂窝小区 A为 终端提供服务, 假设 m为信号在蜂窝小区 A内的传输时延。
蜂窝小区 D如果在早晨 10点发送复用 PN码, 经蜂窝小区 A的传输到达 终端; 假设信号在蜂窝小区 A内的传输时延 m为 1 0分钟, 此时, 终端的时间 是 10点 10分,终端根据传输时延判断蜂窝小区 D发送复用 PN码的时间为 10 点 10分一 10分 =10点,确定目的蜂窝小区的复用 PN码相位是: PNpha se =PN Y*64
+ 3—m;
终端向蜂窝小区 D发送复用扰码相位, 假设信号在蜂窝小区 A内的传输 时延 n为 3分钟,基站控制器确定复用 PN码相位是: PNpha se =PN Y*64 + 3- m+n 其中, 当目的小区为蜂窝小区或微蜂窝小区时, 由于蜂窝小区或微蜂窝小区 到终端的距离非常近, n可以忽略不计。
基站控制器对复用 PN码相位进行修正还原, PNpha se加上在蜂窝小区 A 内的传输时延 m得到复用 4尤码相位 PN Υ*64 + 3+η, 由于切换还没有完成, 终端 与手机之间还没有建立通信信道, 所以 η无法修正。
403、 判断所述修正复用扰码相位是否在目的蜂窝小区的扰码识别区间; 基站和手机都有一份相同的邻区列表, 邻区列表记载了相邻的蜂窝小区, 每个蜂窝小区都对应一个识别区间。 目的蜂窝小区的扰码识别区间的起始端 点为目的蜂窝小区的复用扰码减 W个码片, 终止端点为目的蜂窝小区的复用 扰码加 Z个码片, 其中, W、 Z为自然数。 W、 Z的取值可以相同, 也可以不同。
蜂窝小区 B的扰码识别区间 ( PN Υ, ΡΝ Υ+ 2 ); 蜂窝小区 C的扰码识别区间 ( ΡΝ Υ, ΡΝ Υ-2 ); 蜂窝小区!)的扰码识别区间 ( ΡΝ Υ+2 , PN Υ+ 4 ); 蜂窝小区 Ε的 扰码识别区间 (ΡΝ Υ- 2, ΡΝ Υ- 4 )„
基站控制器识别复用扰码相位 PNpha se =PN Y*64 +3+n落在哪个扰码识别区 间;
404、 如果所述修正复用扰码相位在目的蜂窝小区的扰码识别区间, 向终 端发送切换指示消息。
如果所述复用扰码相位 PNphase =ΡΝ γ*64 + 3+n落在目的蜂窝小区 D的扰码 识别区间 (PN Y+2 , PN Y+ 4 ) (如图 5所示, 由于 n无法修正, 所以代表复 用扰码相位的箭头与该区间的中心有一定的间隔;), 则向终端发送切换指示消 息。 将所述目的蜂窝小区加入到所述终端的激活集。
终端接收到基站控制器发送的切换指示消息, 进行切换。 本发明实施例 对复用扰码相位进行修正后再识别, 减小了识别误差; 根据识别结果发送切 换指示, 提高了切换成功率。
本发明实施例还提供了一种切换装置, 如图 6所示, 包括:
接收模块 601 , 用于接收目的蜂窝小区的复用扰码相位;
修正模块 602 , 用于修正所述复用扰码相位, 得到修正复用扰码相位; 识别模块 603 ,用于判断所述修正复用扰码相位是否在目的蜂窝小区的扰 码识别区间;
发送模块 604 , 如果所述识别模块的输出结果为: 修正复用扰码相位在目 的蜂窝小区的扰码识别区间, 所述发送模块用于向终端发送切换指示消息。
所述复用扰码相位为目的小区扰码乘以 64加目的小区的偏置减去源小区 传输时延; 目的蜂窝小区的扰码识别区间的起始端点为目的蜂窝小区的复用 扰码减 W个码片, 终止端点为目的蜂窝小区的复用扰码加 Z个码片, 其中, w、 z为自然数。 W、 Z的取值可以相同, 也可以不同。。
所述修正所述复用扰码相位包括所述复用扰码相位加源蜂窝小区的传输 时延。
本发明实施例对复用扰码相位进行修正后再识别, 减小了识别误差; 根 据识别结果发送切换指示, 提高了切换成功率。

Claims

权利 要 求 书
1、 一种资源复用方法, 其特征在于包括:
为每个蜂窝小区分配复用扰码, 所述复用扰码包括扰码和偏置;
使用所述复用扰码为蜂窝小区配置邻区列表。
2、 根据权利要求 1所述的资源复用方法, 其特征在于还包括:
配置搜索窗参数。
3、 根据权利要求 1所述的资源复用方法, 其特征在于, 所述蜂窝小区包括 宏蜂窝小区、 微蜂窝小区和微微蜂窝小区。
4、 一种切换方法, 终端从源小区向目的小区移动, 发送目的蜂窝小区的复 用扰码相位, 其特征在于, 该方法包括:
接收目的蜂窝小区的复用扰码相位;
修正所述复用扰码相位, 得到修正复用扰码相位;
判断所述修正复用扰码相位是否在目的蜂窝小区的扰码识别区间; 如果所述修正复用扰码相位在目的蜂窝小区的扰码识别区间, 向终端发送 切换指示消息。
5、 根据权利要求 4所述的切换方法, 其特征在于, 还包括:
将所述目的蜂窝小区加入到所述终端的激活集。
6、 根据权利要求 4所述的切换方法, 其特征在于, 所述复用扰码相位为目 的小区扰码乘以 64加目的小区的偏置减去源小区传输时延; 所述目的蜂窝小区 的扰码识别区间的起始端点为目的蜂窝小区的复用扰码减 W个码片, 终止端点 为目的蜂窝小区的复用扰码加 Z个码片, 其中, I Z为自然数。
7、 根据权利要求 6所述的切换方法, 其特征在于, 所述 W、 Z的取值相同。
8、 根据权利要求 4所述的切换方法, 其特征在于, 所述修正所述复用扰码 相位包括所述复用扰码相位加源蜂窝小区的传输时延。
9、 一种资源复用装置, 其特征在于包括:
复用扰码分配模块, 用于为每个蜂窝小区分配复用扰码, 所述复用扰码包 括扰码和偏置; 邻区列表配置模块, 用于使用所述复用扰码为蜂窝小区配置邻区列表。
10、 根据权利要求 9所述的资源复用装置, 其特征在于还包括:
参数配置模块, 用于配置搜索窗参数。
11、 根据权利要求 9 所述的资源复用装置, 其特征在于, 所述蜂窝小区包 括宏蜂窝小区、 微蜂窝小区和微微蜂窝小区。
12、 一种切换装置, 其特征在于, 包括:
接收模块, 用于接收目的蜂窝小区的复用扰码相位;
修正模块, 用于修正所述复用扰码相位, 得到修正复用扰码相位; 识别模块, 用于判断所述修正复用扰码相位是否在目的蜂窝小区的扰码识 别区间;
发送模块, 如果所述识别模块的输出结果为: 修正复用扰码相位在目的蜂 窝小区的扰码识别区间, 所述发送模块用于向终端发送切换指示消息。
1 3、 根据权利要求 12所述的切换装置, 其特征在于, 所述复用扰码相位为 目的小区扰码乘以 64加目的小区的偏置减去源小区传输时延; 所述目的蜂窝小 区的扰码识别区间的起始端点为目的蜂窝小区的复用扰码减 W个码片, 终止端 点为目的蜂窝小区的复用扰码加 Z个码片, 其中, Ψ、 Ζ为自然数。
14、 根据权利要求 1 3所述的切换装置, 其特征在于, 所述 W、 Z的取值相 同。
15、 根据权利要求 12所述的切换装置, 其特征在于, 所述修正所述复用扰 码相位包括所述复用扰码相位加源蜂窝小区的传输时延。
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