WO2010105436A1 - 一种小区切换的方法和设备 - Google Patents

一种小区切换的方法和设备 Download PDF

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Publication number
WO2010105436A1
WO2010105436A1 PCT/CN2009/070916 CN2009070916W WO2010105436A1 WO 2010105436 A1 WO2010105436 A1 WO 2010105436A1 CN 2009070916 W CN2009070916 W CN 2009070916W WO 2010105436 A1 WO2010105436 A1 WO 2010105436A1
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WO
WIPO (PCT)
Prior art keywords
link
terminal
base station
cell
network controller
Prior art date
Application number
PCT/CN2009/070916
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English (en)
French (fr)
Inventor
胡琴涛
董旭晖
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 CN2009801165954A priority Critical patent/CN102379140A/zh
Priority to PCT/CN2009/070916 priority patent/WO2010105436A1/zh
Publication of WO2010105436A1 publication Critical patent/WO2010105436A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/34Reselection control
    • H04W36/38Reselection control by fixed network equipment
    • H04W36/385Reselection control by fixed network equipment of the core network

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and device for cell handover. Background technique
  • the mobile terminal UE User Equipment
  • the UE may be out of the coverage of the current carrier frequency during the movement, it is necessary to initiate an inter-frequency hard handover in time to prevent dropped calls. Since the frequency points before and after switching are different, and the UE has only one antenna, it is necessary to start the compressed mode auxiliary measurement.
  • the so-called compressed mode technology is to save the physical channel transmission capability or reduce the data transmission amount, so that each physical frame can be saved.
  • the time of 3-7 time slots is used to perform the measurement of the inter-frequency and inter-system cells.
  • the RNC Radio Network Controller
  • the inventors have found that the above prior art has at least the following shortcomings and disadvantages:
  • the UE has developed from having only one antenna to have two antennas, and adopting the above compression mode, This causes additional radio resources to be occupied and causes waste of antenna resources. Summary of the invention
  • the embodiment of the present invention provides a method and a device for cell handover.
  • the technical solution is as follows:
  • the embodiment of the present invention provides a method for cell handover, where the terminal has a set of antennas, and the terminal further has at least one set of antennas, and the method includes:
  • the terminal acquires a signal quality of a current cell
  • the first link is used to maintain the first link with the radio network controller; the second set of antennas is used to measure the neighboring cell of the current cell, and the measurement is obtained.
  • the embodiment of the present invention provides a terminal, where the terminal has a set of antennas, and the terminal further has at least one set of antennas, and the terminal includes:
  • An acquiring module configured to acquire a signal quality of a current cell where the terminal is located
  • a processing module configured to: when the signal quality acquired by the acquiring module is lower than a preset signal quality threshold, use a first set of antennas to maintain a first link with a radio network controller; and use the second set of antennas to use a current cell
  • the neighboring cell performs measurement to obtain measurement information
  • the reporting module is configured to report the measurement information acquired by the processing module to the radio network controller by using the first link, so that the radio network controller determines, according to the measurement information, whether the terminal is Inter-cell handover is required.
  • the embodiment of the present invention provides a radio network controller, where the radio network controller includes: a holding module, configured to: when a signal quality of a current cell acquired by the terminal is lower than a preset signal quality threshold, The first set of antennas of the terminal and the terminal maintain a first link, and the terminal has at least two sets of antennas;
  • a receiving module configured to receive measurement information reported by the terminal by using the first link, where the measurement information is obtained by the terminal using the second set of antennas to measure neighboring cells of a current cell;
  • a determining module configured to determine, according to the measurement information received by the receiving module, whether the terminal needs to perform inter-cell handover.
  • FIG. 1 is a schematic flowchart of a method for cell handover according to an embodiment of the present invention
  • Embodiment 1 of the present invention is a schematic diagram of an inter-frequency handover scenario provided by Embodiment 1 of the present invention
  • FIG. 3 is a schematic flowchart of a method for cell handover according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic diagram of a terminal according to Embodiment 2 of the present invention
  • FIG. 5 is another schematic diagram of a terminal according to Embodiment 2 of the present invention
  • FIG. 4 is a schematic diagram of a terminal according to Embodiment 2 of the present invention
  • FIG. 5 is another schematic diagram of a terminal according to Embodiment 2 of the present invention
  • FIG. 5 is another schematic diagram of a terminal according to Embodiment 2 of the present invention.
  • FIG. 6 is a detailed schematic diagram of a terminal provided in Embodiment 2 of the present invention.
  • FIG. 7 is a schematic diagram of a radio network controller according to Embodiment 3 of the present invention.
  • FIG. 8 is another schematic diagram of a radio network controller according to Embodiment 3 of the present invention.
  • FIG. 9 is a detailed schematic diagram of a radio network controller according to Embodiment 3 of the present invention.
  • FIG. 10 is a schematic diagram of a system for cell handover according to Embodiment 4 of the present invention. detailed description
  • the embodiment of the present invention provides a method for cell handover, as shown in FIG.
  • the method is as follows:
  • S1 The terminal acquires the signal quality of the current cell.
  • S3 The obtained measurement information is reported to the radio network controller by using the first link, so that the radio network controller determines, according to the measurement information, whether the terminal needs to perform inter-cell handover.
  • the method further includes:
  • the terminal uses the second set of antennas to pass through the base station of the target cell to establish a second link with the radio network controller. After the second link is successfully established, the first link is deleted.
  • the method for cell handover provided by the embodiment of the present invention fully utilizes multiple sets of antennas owned by the mobile terminal, and uses the first set of antennas to maintain the first link with the radio network controller; and uses the second set of antennas to adjacent to the current cell.
  • the cell performs measurement, obtains measurement information, reports the acquired measurement information to the radio network controller through the first link, and performs a handover decision by the radio network controller, thereby reducing occupation of radio resources in the inter-frequency handover process, and Then, the second set of antennas is used to establish a new link, and the handover time and the risk of dropped calls of the UE are reduced by establishing a new link and then disconnecting the old link.
  • Embodiment 1 In order to describe the method provided by the foregoing embodiments of the present invention in detail, refer to the following embodiments: Embodiment 1
  • the embodiment of the invention provides a method for cell handover.
  • the mobile terminal has at least two sets of antennas
  • the mobile terminal reduces the occupation of radio resources in the inter-frequency handover process, and reduces the handover time and the risk of dropped calls of the UE.
  • FIG. 2 is a schematic diagram of an inter-frequency handover scenario according to an embodiment of the present invention, where the UE has at least two sets of antennas (this embodiment uses two sets of antennas X for convenience of description). Y is an example), see Figure 3, the method is as follows:
  • Step 101 The UE acquires the signal quality of the currently used frequency.
  • the UE obtains the signal quality of the currently used frequency under a certain cell covered by the NodeB1, that is, obtains the signal quality of the carrier frequency that can be provided by the current cell covered by the NodeB1.
  • Step 102 Determine whether the acquired signal quality is lower than a preset signal quality threshold. If yes, go to step 103; otherwise, go to step 117.
  • the preset signal quality threshold is set according to specific needs.
  • Step 103 The UE uses the antenna X to maintain the link with the RNC, and uses the antenna Y to measure the surrounding frequency of the currently used frequency to obtain measurement information.
  • the measurement information may include: Ec/No of the current cell and the neighboring cell CPICH (Common Pilot Channel), and may also include a relative time difference between the current cell and the neighboring cell.
  • CPICH Common Pilot Channel
  • Ec represents the average energy of a Chip chip
  • No represents the power spectral density of white noise
  • Ec/No represents the ratio of the energy of each modulation bit to the noise power. Since the time between cells is not synchronized, there may be a difference in relative time. Therefore, in order to ensure that the service after handover is not affected, the relative time difference between the current cell and each neighboring cell can be obtained.
  • Step 104 The UE reports the obtained measurement information to the RNC through the link maintained by the antenna X and the RNC.
  • the UE triggers the measurement in the cell A, and obtains the Ec/No and the time difference of the neighboring cells 8, C, and D, respectively. See Table 1 for the schematic table provided by the embodiment of the present invention.
  • the foregoing measurement information obtained by the UE where the current time difference between the cell A and the cell B is T1; the time difference between the current cell A and the cell C is T2; the time difference between the current cell A and the cell D is T3.
  • the above information obtained by the UE is reported to the RNC through the link maintained by the antenna X and the RNC.
  • Step 105 The RNC receives the measurement information reported by the UE through the link maintained by the antenna X of the UE, and determines whether the UE needs to perform the inter-frequency hard handover according to the Ec/No carried in the measurement information, and if yes, step 106 is performed; Otherwise, go to step 117.
  • the RNC receives the Ec/No (B), Ec/No (C), and Ec/No (D) carried in the measurement information reported by the UE, and determines whether the threshold is based on the preset switching threshold. Perform inter-frequency hard switching on the UE.
  • Ec/No (B), Ec/No (C), and Ec/No (D) are 30, 40, and 15, respectively, and the preset switching threshold is 20, then If there is a value in the received Ec/No that is greater than the preset switching threshold, it is determined that the inter-frequency hard handover needs to be performed on the UE, and the following step 106 is performed.
  • Step 106 The RNC selects a target cell from the cells reported by the UE according to the preset selection rule.
  • the RNC may select the largest one according to the size of the Ec/No value, and use the cell corresponding to the maximum Ec/No value as the target cell of the handover; or, the RNC may also be multiple from the preset handover threshold.
  • the Ec/No values one of them is arbitrarily selected, and the cell corresponding to the selected Ec/No value is used as the target cell for handover.
  • the embodiment of the present invention does not impose any limitation on this. For convenience of description, referring to FIG. 2, in this embodiment, the target cell selected by the RNC is used as the cell C, and the base station where the cell C is located is the NodeB2.
  • Step 107 The RNC sends a radio link establishment request to the base station corresponding to the target cell according to the target cell.
  • Step 108 After receiving the radio link setup request, the base station corresponding to the target cell sends the radio link setup request to the UE, and configures the physical channel of the target cell for the UE according to the radio link setup request.
  • the base station corresponding to the target cell may adopt a transparent transmission mode when the radio link setup request is sent to the UE, which is not limited in this embodiment.
  • Step 109 After receiving the radio link setup request sent by the base station corresponding to the target cell, the UE sends an uplink synchronization signal to the base station.
  • Step 110 After receiving the uplink synchronization signal reported by the UE through the antenna Y, the base station corresponding to the target cell sends a radio link setup response to the RNC, and sends downlink data to the UE.
  • the base station corresponding to the target cell performs synchronization with the time difference of the UE after receiving the uplink synchronization signal reported by the UE through the antenna Y.
  • Step 111 The RNC receives the radio link setup response returned by the base station corresponding to the target cell, and sends a radio link increase request to the UE by using the base station corresponding to the target cell.
  • the radio link increase request may be a radio link activation set update message.
  • the RNC after receiving the radio link setup response returned by the NodeB2, the RNC sends a radio link activation set update message to the NodeB2 via the DCCH (Dedicated Control Channel) bearer (the radio link activation set update).
  • the message is used to indicate that the UE performs radio link addition.
  • the radio link activation set update message is transparently transmitted by the NodeB2 (illustrated by transparent transmission as an example), and then sent to the UE.
  • Step 112 The UE receives a radio link increase request, establishes a radio link with the RNC through the antenna Y, and the UE sends the RNC to the RNC. Return to the wireless link to increase the response.
  • the returning the radio link update response to the RNC may be specifically a radio link activation set update complete message.
  • Step 113 The RNC receives the radio link addition request reported by the UE, and sends a radio link deletion request to the UE by using the base station corresponding to the current cell.
  • the RNC releases the radio link established between the original and the NodeB1 for the UE, and sends the radio link activation set to the UE through the DCCH bearer through the NodeB1.
  • An update message, the radio link active set update message is used to instruct the UE to perform radio link deletion.
  • Step 114 After receiving the radio link deletion request sent by the RNC, the UE deletes the link between the RNC and the RNC that was previously established through the antenna X, and returns the radio link to the RNC through the link established between the antenna Y and the RNC. Road delete response.
  • the radio link deletion response returned to the RNC is specifically a radio link activation set update complete message.
  • Step 115 The RNC receives the radio link deletion response returned by the UE, and sends a radio link deletion request to the base station corresponding to the current cell.
  • Step 116 The base station corresponding to the current cell receives the radio link deletion request, releases the radio resource, and returns a radio link deletion response.
  • the base station corresponding to the current cell may return a radio link deletion response to the RNC through an NBAP (NodeB Application Part) message.
  • the radio link deletion response is not sent by the previously established first link, but is sent by the base station of the current cell and other paths connected by the radio network controller, so after deleting the first link, the current cell
  • the corresponding base station can still return a radio link deletion response to the RNC.
  • the base station corresponding to the current cell may not return a radio link deletion response to the RNC after releasing the radio resource, which is not limited in this embodiment.
  • Step 117 No action is performed.
  • the above embodiment is only described by taking two sets of antennas of the mobile terminal as an example. Those skilled in the art can know that the method is also applicable to the case where the mobile terminal has more than two sets of antennas.
  • a WCDMA (Wideband Code-Division Multiple Access) system is taken as an example for description.
  • the method provided by the embodiment of the present invention is also applicable to communications similar to the scenario.
  • the mobile terminal In the case of a system, such as a GSM (Global System for Mobile Communications) system, the mobile terminal has two antennas. This embodiment does not impose any limitation.
  • the method for cell handover provided by the embodiment of the present invention, when the mobile terminal has two sets of antennas, fully utilizes multiple sets of antennas owned by the mobile terminal, and uses the first set of antennas to maintain the first link with the radio network controller; Two sets of days The line measures the neighboring cell of the current cell, and obtains the measurement information. The measured information is reported to the radio network controller through the first link, and the radio network controller performs the handover decision, thereby reducing the inter-frequency handover process. For the occupation of radio resources, and then using the second antenna to establish a new link, the handover time and the risk of dropped calls of the UE are reduced by establishing a new link and then disconnecting the old link.
  • the embodiment of the present invention provides a terminal, where the terminal has at least two sets of antennas.
  • the terminal includes:
  • the obtaining module 401 is configured to obtain a signal quality of a current cell where the terminal is located;
  • the processing module 402 is configured to: when determining that the signal quality acquired by the obtaining module 401 is lower than the preset signal quality threshold, use the first set of antennas to maintain the first link with the radio network controller; and use the second set of antennas to phase the current cell The neighboring cell performs measurement to obtain measurement information;
  • the reporting module 403 is configured to report, by using the first link, the measurement information acquired by the processing module 402 to the wireless network controller, so that the wireless network controller determines, according to the measurement information, whether the terminal needs to perform inter-cell handover.
  • the terminal when the terminal needs to perform inter-cell handover, the terminal further includes:
  • the establishing module 404 is configured to establish a second link with the radio network controller by using the second set of antennas to pass through the base station of the target cell;
  • the second set of antennas are used to establish a second link with the radio network controller by using the second set of antennas through the base station of the target cell.
  • the deleting module 405 is configured to delete the first link after the establishing module 404 successfully establishes the second link.
  • the establishing module 404 includes:
  • the first receiving unit 4041 is configured to receive a radio link setup request sent by the base station of the target cell, where the radio network controller determines, after the radio network controller selects the target cell from the neighboring cells reported by the terminal, according to the measurement information, Delivered to the base station of the target cell;
  • the first sending unit 4042 is configured to: after receiving the radio link setup request, the first receiving unit 4041 sends an uplink synchronization signal to the base station of the target cell through the physical channel, where the physical channel is the base station of the target cell receives the radio link setup request. Configured for the terminal later;
  • the second receiving unit 4043 is configured to receive a radio link increase request sent by the base station of the target cell, where the radio link increase request is that the base station of the target cell receives the uplink synchronization signal, and returns a radio link setup response to the radio network controller. , delivered by the radio network controller to the base station of the target cell;
  • the establishing unit 4044 is configured to: after the second receiving unit 4043 receives the wireless link increase request, pass the second set of days The line establishes a second link with the radio network controller through the base station of the target cell.
  • the deleting module 405 includes:
  • the second sending unit 4051 is configured to: after the establishing unit 4044 successfully establishes the second link, return a radio link increase response to the radio network controller;
  • the third receiving unit 4052 is configured to receive a radio link deletion request sent by the base station of the current cell, where the radio network deletion request is sent by the radio network controller to the base station of the current cell after receiving the radio link increase response;
  • the deleting unit 4053 is configured to: after the third receiving unit 4052 receives the radio link deletion request, delete the first link, and return a radio link deletion response to the radio network controller by using the second link, so that the radio network control After receiving the radio link deletion response, the device sends a radio link deletion request to the base station of the current cell, so that the base station of the current cell receives the radio link deletion request, releases the radio resource, and returns a radio link deletion response to the RNC.
  • the terminal when the terminal has two sets of antennas, fully utilizes two sets of antennas owned by the terminal, and uses the first set of antennas to maintain a link with the radio network controller; using the second set of antennas to the current cell
  • the neighboring cell performs measurement to obtain measurement information.
  • the first link is used to report the acquired measurement information to the radio network controller, and the radio network controller performs handover decision, thereby reducing occupation of radio resources in the inter-frequency handover process.
  • using the second antenna to establish a new link, by first establishing a new link and then disconnecting the old link, reducing the handover time and dropped call risk of the UE.
  • the embodiment of the present invention provides a radio network controller, see FIG. 7, the wireless network.
  • the controller includes:
  • the maintaining module 601 is configured to: when the signal quality of the current cell acquired by the terminal is lower than a preset signal quality threshold, use the first antenna and the terminal of the terminal to maintain the first link, where the terminal has at least two antennas;
  • the receiving module 602 is configured to receive measurement information reported by the terminal through the first link, where the measurement information is obtained by the terminal using the second antenna to measure the neighboring cell of the current cell;
  • the determining module 603 is configured to determine, according to the measurement information received by the receiving module 602, whether the terminal needs to perform inter-cell handover.
  • the measurement information reported by the terminal includes: an Ec/No value of a common pilot channel of the current cell and the neighboring cell; and correspondingly, the determining module 603 includes:
  • the determining unit is configured to determine, according to the preset threshold value and the reported Ec/No value, whether the terminal needs to perform inter-cell handover. Further, when the terminal needs to perform inter-cell handover, referring to FIG. 8, the radio network controller further includes: an establishing module 604, configured to: when the determining module 603 determines that the terminal needs to perform inter-cell handover, the base station of the target cell Using the second set of antennas of the terminal to establish a second link with the terminal;
  • the deleting module 605 is configured to delete the first link after the establishing module 604 successfully establishes the second link.
  • the establishing module 604 includes:
  • the selecting unit 6041 is configured to select, according to the measurement information received by the receiving module 602, the target cell from the neighboring cells reported by the terminal;
  • the first sending unit 6042 is configured to: after the selecting unit 6041 selects the target cell, send a radio link setup request to the base station of the target cell; so that the base station of the target cell configures the physical channel for the terminal after receiving the radio link setup request. And sending a radio link setup request to the terminal, so that after receiving the radio link setup request, the terminal sends an uplink synchronization signal to the base station of the target cell through the physical channel;
  • the first receiving unit 6043 is configured to receive a radio link setup response, where the radio link setup response is that when the base station of the target cell receives the uplink synchronization signal and returns to the radio network controller;
  • the second sending unit 6044 is configured to: after the first receiving unit 6043 receives the radio link setup response, send a radio link increase request to the base station of the target cell, so that the base station of the target cell sends the radio link increase request to The terminal causes the terminal to receive the radio link increase request, and establishes a second link with the radio network controller through the base station of the target cell through the second set of antennas.
  • the deleting module 605 includes:
  • a second receiving unit 6051 configured to: when the second link is successfully established, the wireless link that is sent by the receiving terminal increases the response;
  • the third sending unit 6052 is configured to: when the second receiving unit 6051 receives the wireless link increase response, Sending a radio link deletion request to the base station of the current cell, so that the base station of the current cell sends a radio link deletion request to the terminal, so that after receiving the radio link deletion request, the terminal deletes the first link;
  • the third receiving unit 6053 is configured to: after deleting the first link, the receiving terminal returns a radio link deletion response by using the second link;
  • the fourth sending unit 6054 is configured to: after receiving the radio link deletion response returned by the terminal by using the second link, send a radio link deletion request to the base station of the current cell, so that the base station of the current cell receives the radio link deletion request. , releasing the wireless resource, returning the wireless link deletion response;
  • the fourth receiving unit 6055 is configured to receive a radio link deletion response that is returned after the base station of the current cell releases the radio resource. :
  • the radio link deletion response is not sent through the first link, but is sent through the other path that the base station of the current cell and the radio network controller are connected to.
  • the radio network controller provided by the embodiment of the present invention, since the terminal has at least two sets of antennas, the first set of antennas is used to maintain the link with the radio network controller; and the second set of antennas is used to measure the neighboring cells of the current cell.
  • the embodiment of the present invention provides a system for cell handover.
  • the system includes: a terminal 801 having at least two sets of antennas, and a radio network controller 802, wherein.
  • the terminal 801 is configured to acquire a signal quality of a current cell where the terminal 801 is located, and determine that the acquired signal quality is lower than a preset signal quality threshold, and use the first antenna to maintain the first link with the radio network controller 802.
  • the set antenna measures the neighboring cell of the current cell, and obtains measurement information.
  • the measured information is reported to the radio network controller 802 through the first link, so that the radio network controller 802 determines whether the terminal 801 is based on the measurement information. Inter-cell handover is required;
  • the radio network controller 802 is configured to: when the signal quality of the current cell acquired by the terminal 801 is lower than the preset signal quality threshold, the first set of antennas and the terminal 801 of the terminal 801 are used to maintain the first link; and is further used by the receiving terminal 801.
  • the measurement information reported by the first link is further used to determine, according to the received measurement information, whether the terminal 801 needs to perform inter-cell handover.
  • the terminal 801 is further configured to: establish, by the base station of the target cell, the second link of the radio network controller 802 by using the second set of antennas; and further, when the establishing module 404 successfully establishes the second link, deleting the first link. Road
  • the radio network controller 802 is further configured to establish a second link with the terminal 801 by using the second set of antennas of the terminal 801 through the base station of the target cell; and deleting the first link after the second link is successfully established.
  • the system for cell handover provided by the embodiment of the present invention, because the terminal has at least two sets of antennas, the first set of antennas is used to maintain the link with the radio network controller; and the second set of antennas is used to measure the neighboring cells of the current cell. Acquiring measurement information; reporting the acquired measurement information to the radio network controller through the first link, and performing a handover decision by the radio network controller, thereby reducing occupation of radio resources in the inter-frequency handover process, and further utilizing the second
  • the antenna establishes a new link, and reduces the handover time and dropped call risk of the UE by first establishing a new link and then disconnecting the old link.
  • the term "receiving" in the embodiment of the present invention may be understood as actively acquiring information from other modules or receiving information sent by other modules.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the embodiment, or may be correspondingly changed in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.
  • Some of the steps in the embodiment of the present invention may be implemented by software, and the corresponding software program may be stored in a readable storage medium such as an optical disk or a hard disk.

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  • Computer Networks & Wireless Communication (AREA)
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Description

一种小区切换的方法和设备 技术领域
本发明涉及通信领域, 特别涉及一种小区切换的方法和设备。 背景技术
随着移动通信的普及, 移动终端 UE (User Equipment ) 已经得到了用户的广泛使用, 由于 UE自身的移动性等特点, 如何保证在移动时, 仍能向用户提供优质的业务成为业界所 关注的。
由于 UE在移动中可能脱离当前载频的覆盖范围,需要及时发起异频硬切换,防止掉话。 由于切换前后频点不同, 而 UE只有一套天线, 需要启动压缩模式辅助测量, 其中, 所谓压 缩模式技术是通过增加物理信道的传送能力或者减少数据发送量的方式, 使得每个物理帧 可以节省出 3— 7个时隙的时间用于执行异频、异系统小区的测量。通过 RNC ( Radio Network Control ler, 无线网络控制器)向 UE下发测量控制信息实现, 在 RNC下发测量控制信息之 前, RNC首先会在基站 NodeB和 UE配置压缩模式参数, 然后设置异频、 异系统小区的测量 控制, 并同时激活压缩模式。
发明人在实现本发明的过程中, 发现上述现有技术至少存在以下缺点和不足: 随着通 信技术的发展, UE 已经由只拥有一套天线发展为拥有两套天线, 采用上述压缩模式, 会导 致额外的无线资源占用, 并造成天线的资源浪费。 发明内容
当移动终端拥有至少两套天线时, 为了减少异频切换过程中对无线资源的占用, 本发 明实施例提供了一种小区切换的方法和设备。 所述技术方案如下:
—方面, 本发明实施例提供了一种小区切换的方法, 终端拥有一套天线, 所述终端还 拥有至少一套天线, 所述方法包括:
所述终端获取当前小区的信号质量;
当所述信号质量低于预设信号质量门限时, 利用第一套天线保持和无线网络控制器的 第一链路; 利用所述第二套天线对当前小区的相邻小区进行测量, 获取测量信息;
通过所述第一链路, 将获取的测量信息上报给所述无线网络控制器, 以使得所述无线 网络控制器根据所述测量信息, 判定所述终端是否需要进行小区间切换。 另一方面, 本发明实施例提供了一种终端, 所述终端拥有一套天线, 所述终端还拥有 至少一套天线, 所述终端包括:
获取模块, 用于获取所述终端所在当前小区的信号质量;
处理模块, 用于当所述获取模块获取的信号质量低于预设信号质量门限时, 利用第一 套天线保持和无线网络控制器的第一链路; 利用所述第二套天线对当前小区的相邻小区进 行测量, 获取测量信息;
上报模块, 用于通过所述第一链路, 将所述处理模块获取的测量信息上报给所述无线 网络控制器, 以使得所述无线网络控制器根据所述测量信息, 判定所述终端是否需要进行 小区间切换。
再一方面, 本发明实施例提供了一种无线网络控制器, 所述无线网络控制器包括: 保持模块, 用于当终端获取的当前小区的信号质量低于预设信号质量门限时, 利用所 述终端的第一套天线和所述终端保持第一链路, 所述终端至少拥有两套天线;
接收模块, 用于接收所述终端通过所述第一链路上报的测量信息, 所述测量信息是所 述终端利用所述第二套天线对当前小区的相邻小区进行测量后获取的;
判断模块, 用于根据所述接收模块接收的测量信息, 判定所述终端是否需要进行小区 间切换。
本发明实施例提供的技术方案的有益效果是:
充分利用移动终端所拥有的多套天线, 利用第一套天线保持和无线网络控制器的第一 链路; 利用第二套天线对当前小区的相邻小区进行测量, 获取测量信息; 通过第一链路, 将获取的测量信息上报给无线网络控制器, 由无线网络控制器进行切换的判决, 从而减少 异频切换过程中对无线资源的占用。 附图说明
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的前提下, 还可以根 据这些附图获得其他的附图。
图 1是本发明实施例提供的小区切换的方法的流程示意图;
图 2是本发明实施例 1提供的异频切换场景示意图;
图 3是本发明实施例 1提供的小区切换的方法的流程示意图;
图 4是本发明实施例 2提供的终端示意图; 图 5是本发明实施例 2提供的终端另一示意图;
图 6是本发明实施例 2提供的终端详细示意图;
图 7是本发明实施例 3提供的无线网络控制器示意图;
图 8是本发明实施例 3提供的无线网络控制器另一示意图;
图 9是本发明实施例 3提供的无线网络控制器详细示意图;
图 10是本发明实施例 4提供的小区切换的系统示意图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发明实施方式作 进一步地详细描述。
当移动终端拥有至少两套天线时, 为了减少异频切换过程中对无线资源的占用, 减少 UE 的切换时间和掉话风险, 本发明实施例提供了一种小区切换的方法, 参见图 1, 该方法 内容如下:
S1:终端获取当前小区的信号质量;
S2 :当信号质量低于预设信号质量门限时, 利用第一套天线保持和无线网络控制器的第 一链路; 利用第二套天线对当前小区的相邻小区进行测量, 获取测量信息;
S3 :通过第一链路, 将获取的测量信息上报给无线网络控制器, 以使得无线网络控制器 根据测量信息, 判定终端是否需要进行小区间切换。
进一步地, 当终端需要进行小区间切换时,方法还包括:
终端利用第二套天线经过目标小区的基站, 建立和无线网络控制器的第二链路; 第二链路建立成功后, 删除第一链路。
本发明实施例提供的小区切换的方法, 充分利用移动终端所拥有的多套天线, 利用第 一套天线保持和无线网络控制器的第一链路; 利用第二套天线对当前小区的相邻小区进行 测量, 获取测量信息; 通过第一链路, 将获取的测量信息上报给无线网络控制器, 由无线 网络控制器进行切换的判决, 从而减少异频切换过程中对无线资源的占用, 并进而利用第 二套天线建立新链路, 通过先建立新链路再断开旧链路的方式, 减少 UE的切换时间和掉话 风险。
为了对上述本发明实施例提供的方法进行详细说明, 请参见如下实施例: 实施例 1
本发明实施例提供了一种小区切换的方法, 当移动终端拥有至少两套天线时, 通过该 方法减少异频切换过程中对无线资源的占用, 减少 UE的切换时间和掉话风险。 为了对本发明实施例提供的方法进行详细说明, 参见图 2, 为本发明实施例提供的异频 切换场景示意图, 其中, UE拥有至少两套天线 (本实施例为了便于说明以两套天线 X、 Y为 例), 参见图 3, 该方法内容如下:
步骤 101 : UE获取当前所使用频率的信号质量。
以上述图 2所示场景为例, UE在 NodeBl覆盖的某小区下, 获取当前所使用频率下的信 号质量, 即, 获取该 NodeBl覆盖的当前小区所能提供的载频下的信号质量。
步骤 102: 判断获取的信号质量是否低于预设信号质量门限, 如果是, 则执行步骤 103; 否则, 执行步骤 117。
其中, 上述预设信号质量门限根据具体需要进行设定。
步骤 103: UE利用天线 X保持和 RNC的链路, 利用天线 Y对当前使用频率的周围频点 进行测量, 获取测量信息。
其中, 测量信息中可以包括: 当前小区和相邻小区 CPICH ( Common Pi lot Channel , 公共导频信道) 的 Ec/No, 还可以包括当前小区和相邻小区的相对时间差异。
其中, Ec代表一个 Chip码片的平均能量, No代表白噪声的功率谱密度, Ec/No 代表 每个调制比特的能量与噪声功率之比。 由于小区间的时间不同步, 可能存在相对时间的差 异,因此,为了保证切换后业务不受影响,可以获取当前小区和各相邻小区的相对时间差异。
步骤 104: UE通过天线 X和 RNC保持的链路, 将获取的测量信息上报给 RNC。
例如, 假设 UE在小区 A下触发了测量, 分别获取到其邻近小区8、 C、 D的 Ec/No和时 间差值,参见表 1, 为本发明实施例提供的示意表。
表 1
Figure imgf000006_0001
如表 1所示, UE获取到的上述测量信息, 其中, 当前小区 A和小区 B的时间差异为 T1 ; 当前小区 A和小区 C的时间差异为 T2 ;当前小区 A和小区 D的时间差异为 T3。 相应地, 将 UE获取的上述信息通过天线 X和 RNC保持的链路上报给 RNC 。
步骤 105: RNC通过和 UE的天线 X保持的链路, 接收 UE上报的测量信息, 根据测量信 息中携带的 Ec/No, 判断 UE是否需要进行异频硬切换, 如果是, 则执行步骤 106; 否则, 执行步骤 117。 其中, 仍以上述示例进行说明, RNC 收到 UE 上报的测量信息中携带的 Ec/No (B)、 Ec/No (C)、Ec/No (D)后,根据预设切换门限,判断是否对 UE进行异频硬切换,例如, Ec/No (B)、 Ec/No (C)、 Ec/No (D)分别为 30、 40、 15, 而该预设切换门限值为 20, 则由于接收到的 Ec/No 中存在大于该预设的切换门限值的数值, 则确定需要对该 UE执行异频硬切换, 执行下述步 骤 106。
步骤 106 : RNC根据预设选择规则, 从 UE上报的小区中, 选择出目标小区。
其中, 如表 1所示, 假设 UE上报的小区中存在多个 Ec/No值大于预设切换门限值, 则
RNC可以根据 Ec/No值的大小, 从中选择中最大的一个, 将该最大 Ec/No值对应的小区作为 切换的目标小区; 或者, RNC还可以从大于预设的切换门限值的多个 Ec/No值中, 任意选择 其中一个, 将该选择出的 Ec/No 值对应的小区作为切换的目标小区。 本发明实施例对此不 做任何限制。 为了便于说明, 参见图 2, 本实施例以 RNC选择出的目标小区为小区 C为例, 且该小区 C所在基站为 NodeB2。
步骤 107 : RNC根据目标小区, 向该目标小区对应的基站发送无线链路建立请求。
步骤 108 : 目标小区对应的基站收到无线链路建立请求后, 将该无线链路建立请求发送 给 UE, 并根据无线链路建立请求, 为该 UE配置目标小区的物理信道。
其中, 目标小区对应的基站在将该无线链路建立请求发送给 UE时, 可以采用透传的方 式, 本实施例对此不做限制。
步骤 109 : UE通过天线 Y收到目标小区对应的基站发送的无线链路建立请求后, 向该 基站发送上行同步信号。
步骤 110 : 目标小区对应的基站收到 UE通过天线 Y上报的上行同步信号后, 向 RNC发 送无线链路建立响应, 并向 UE发送下行数据。
其中, 目标小区对应的基站收到 UE通过天线 Y上报的上行同步信号后, 执行和该 UE 的时间差值的同步。
步骤 111 : RNC收到目标小区对应的基站返回的无线链路建立响应, 通过目标小区对应 的基站, 向 UE发送无线链路增加请求。
其中,无线链路增加请求可以是无线链路激活集更新消息。如图 2所示, RNC收到 NodeB2 返回的无线链路建立响应后, 经由 DCCH ( Dedicated Control Channel,专用控制信道) 承 载向 NodeB2下发无线链路激活集更新消息 (该无线链路激活集更新消息用于指示 UE进行 无线链路增加), 其中, 该无线链路激活集更新消息经过 NodeB2 透传 (以透传为例进行说 明) 后, 发送至 UE。
步骤 112 : UE接收无线链路增加请求, 通过天线 Y建立和 RNC间的无线链路, UE向 RNC 返回无线链路增加响应。
其中, 如果 UE接收到无线链路增加请求具体是 RNC下发的无线链路激活集更新消息, 则此处向 RNC返回无线链路增加响应可以具体为无线链路激活集合更新完成消息。
步骤 113: RNC收到 UE上报的无线链路增加响应, 通过当前小区对应的基站向 UE下发 无线链路删除请求。
其中, 如图 2所示, RNC收到 NodeB2返回的无线链路增加响应后, 释放原有和 NodeBl 之间为 UE建立的无线链路, 通过 DCCH承载经 NodeBl向 UE下发无线链路激活集更新消息, 该无线链路激活集更新消息用于指示 UE进行无线链路删除。
步骤 114: UE收到 RNC下发的无线链路删除请求后, 将之前通过天线 X建立的和 RNC 之间的链路删除, 通过天线 Y建立的和 RNC之间的链路向 RNC返回无线链路删除响应。
其中, 如果 UE接收到是 RNC下发的无线链路激活集更新消息, 则此处向 RNC返回无线 链路删除响应具体为无线链路激活集合更新完成消息。
步骤 115: RNC接收 UE返回的无线链路删除响应, 向当前小区对应的基站发送无线链 路删除请求。
步骤 116: 当前小区对应的基站接收无线链路删除请求, 释放无线资源, 并返回无线链 路删除响应。
其中, 当前小区对应的基站可以通过 NBAP (NodeB Application Part, 基站应用部分) 消息实现向 RNC返回无线链路删除响应。 其中, 该无线链路删除响应不是通过之前建立的 第一链路发送的, 而是通过当前小区的基站和无线网络控制器相连的其他路径发送的, 所 以删除掉第一链路后, 当前小区对应的基站还是能够向 RNC返回无线链路删除响应的。 可 选地, 当前小区对应的基站还可以在释放无线资源后, 不向 RNC返回无线链路删除响应, 本实施例对此不做限制。
步骤 117: 不执行动作。
上述本实施例仅以移动终端拥有两套天线为例进行的说明, 本领域技术人员可以获知, 该方法还适用于移动终端拥有两套以上天线的情况。 本实施例以 WCDMA (Wideband Code-Division Multiple Access, 宽带分码多工存取)系统为例进行的说明, 本领域技术 人员可以获知, 本发明实施例提供的方法还适用与该场景类似的通信系统, 如 GSM(Global System for Mobile Communications,全球移动通讯系统)系统中移动终端拥有两套天线的 场景, 本实施例对此不做任何限制。
本发明实施例提供的小区切换的方法, 当移动终端拥有两套天线时, 充分利用移动终 端所拥有的多套天线, 利用第一套天线保持和无线网络控制器的第一链路; 利用第二套天 线对当前小区的相邻小区进行测量, 获取测量信息; 通过第一链路, 将获取的测量信息上 报给无线网络控制器, 由无线网络控制器进行切换的判决, 从而减少异频切换过程中对无 线资源的占用, 并进而利用第二天线建立新链路, 通过先建立新链路再断开旧链路的方式, 减少 UE的切换时间和掉话风险。 实施例 2
与上述方法实施例对应, 为了减少异频切换过程中对无线资源的占用, 本发明实施例 提供了一种终端, 其中, 该终端至少拥有两套天线, 参见图 4, 终端包括:
获取模块 401, 用于获取终端所在当前小区的信号质量;
处理模块 402, 用于确定获取模块 401获取的信号质量低于预设信号质量门限时, 利用 第一套天线保持和无线网络控制器的第一链路; 利用第二套天线对当前小区的相邻小区进 行测量, 获取测量信息;
上报模块 403, 用于通过第一链路, 将处理模块 402获取的测量信息上报给无线网络控 制器, 以使得无线网络控制器根据测量信息, 判定终端是否需要进行小区间切换。
进一步地, 参见图 5, 当终端需要进行小区间切换时,终端还包括:
建立模块 404, 用于利用第二套天线经过目标小区的基站, 建立和无线网络控制器的第 二链路;
具体可以为: 当终端的建立模块 404接收到无线网络控制器的切换指令后, 利用第二 套天线经过目标小区的基站, 建立和无线网络控制器的第二链路。
删除模块 405, 用于当建立模块 404将第二链路建立成功后, 删除第一链路。
其中, 参见图 6, 建立模块 404, 包括:
第一接收单元 4041, 用于接收由目标小区的基站发送的无线链路建立请求, 无线链路 建立请求是无线网络控制器根据测量信息, 从终端上报的相邻小区中选择出目标小区后, 向目标小区的基站下发的;
第一发送单元 4042, 用于当第一接收单元 4041接收到无线链路建立请求后, 通过物理 通道向目标小区的基站发送上行同步信号, 物理通道是目标小区的基站接收到无线链路建 立请求后为终端配置的;
第二接收单元 4043, 用于接收由目标小区的基站发送的无线链路增加请求, 无线链路 增加请求是目标小区的基站收到上行同步信号, 向无线网络控制器返回无线链路建立响应 后, 由无线网络控制器向目标小区的基站下发的;
建立单元 4044, 用于当第二接收单元 4043接收到无线链路增加请求后, 通过第二套天 线经过目标小区的基站建立和无线网络控制器的第二链路。
其中, 参见图 6, 删除模块 405, 包括:
第二发送单元 4051, 用于当建立单元 4044将第二链路建立成功后, 向无线网络控制器 返回无线链路增加响应;
第三接收单元 4052, 用于接收由当前小区的基站发送的无线链路删除请求, 无线链路 删除请求是无线网络控制器接收到无线链路增加响应后, 向当前小区的基站下发的;
删除单元 4053,用于当第三接收单元 4052接收到无线链路删除请求后,删除第一链路, 并通过第二链路向无线网络控制器返回无线链路删除响应, 以使得无线网络控制器接收到 无线链路删除响应后, 向当前小区的基站发送无线链路删除请求, 使得当前小区的基站接 收无线链路删除请求后, 释放无线资源, 并向 RNC返回无线链路删除响应。
本发明实施例提供的终端, 当终端拥有两套天线时, 充分利用终端所拥有的两套天线, 利用第一套天线保持和无线网络控制器的链路; 利用第二套天线对当前小区的相邻小区进 行测量, 获取测量信息; 通过第一链路, 将获取的测量信息上报给无线网络控制器, 由无 线网络控制器进行切换的判决, 从而减少异频切换过程中对无线资源的占用, 并进而利用 第二天线建立新链路, 通过先建立新链路再断开旧链路的方式, 减少 UE的切换时间和掉话 风险。 实施例 3
与上述方法实施例和终端实施例相应, 为了减少至少拥有两套天线的终端异频切换过 程中对无线资源的占用, 本发明实施例提供了一种无线网络控制器, 参见图 7, 无线网络控 制器包括:
保持模块 601, 用于当终端获取的当前小区的信号质量低于预设信号质量门限时, 利用 终端的第一套天线和终端保持第一链路, 终端至少拥有两套天线;
接收模块 602, 用于接收终端通过第一链路上报的测量信息, 测量信息是终端利用第二 套天线对当前小区的相邻小区进行测量后获取的;
判断模块 603, 用于根据接收模块 602接收的测量信息, 判定终端是否需要进行小区间 切换。
其中, 上述终端上报的测量信息包括: 当前小区和相邻小区的公共导频信道的 Ec/No 值; 相应地, 判断模块 603包括:
判断单元, 用于根据预设门限值以及上报的 Ec/No值, 判定终端是否需要进行小区间 切换。 进一步地, 当终端需要进行小区间切换时, 参见图 8, 无线网络控制器还包括: 建立模块 604, 用于当判断模块 603判断的结果是终端需要进行小区间切换后, 通过目 标小区的基站, 利用终端的第二套天线建立和终端的第二链路;
删除模块 605, 用于当建立模块 604将第二链路建立成功后, 删除第一链路。
其中, 参见图 9, 建立模块 604包括:
选择单元 6041, 用于根据接收模块 602接收的测量信息, 从终端上报的相邻小区中选 择出目标小区;
第一发送单元 6042, 用于当选择单元 6041选择出目标小区后, 向目标小区的基站下发 无线链路建立请求; 以使得目标小区的基站接收到无线链路建立请求后为终端配置物理通 道, 并将无线链路建立请求发送给终端, 以使得终端接收到无线链路建立请求后, 通过物 理通道向目标小区的基站发送上行同步信号;
第一接收单元 6043, 用于接收无线链路建立响应, 无线链路建立响应是当目标小区的 基站收到上行同步信号, 向无线网络控制器返回的;
第二发送单元 6044, 用于当第一接收单元 6043接收到无线链路建立响应后, 向目标小 区的基站下发无线链路增加请求, 以使得目标小区的基站将无线链路增加请求发送给终端, 使得终端接收到无线链路增加请求, 通过第二套天线经过目标小区的基站建立和无线网络 控制器的第二链路。
其中, 参见图 9, 删除模块 605, 包括:
第二接收单元 6051, 用于当第二链路建立成功后, 接收终端返回的无线链路增加响应; 第三发送单元 6052, 用于当第二接收单元 6051接收到无线链路增加响应后, 向当前小 区的基站下发无线链路删除请求; 以使得当前小区的基站将无线链路删除请求发送给终端, 使得终端接收到无线链路删除请求后, 删除第一链路;
第三接收单元 6053, 用于当删除第一链路后, 接收终端通过第二链路返回的无线链路 删除响应;
第四发送单元 6054, 用于接收到终端通过第二链路返回的无线链路删除响应后, 向当 前小区的基站发送无线链路删除请求, 使得当前小区的基站接收到无线链路删除请求后, 释放无线资源, 返回无线链路删除响应;
第四接收单元 6055, 用于接收当前小区的基站释放无线资源后返回的无线链路删除响 应。:
其中, 无线链路删除响应不是通过第一链路发送的, 而是通过当前小区的基站和无线 网络控制器相连的其他路径发送的。 本发明实施例提供的无线网络控制器, 由于终端拥有至少两套天线, 则利用第一套天 线保持和无线网络控制器的链路; 利用第二套天线对当前小区的相邻小区进行测量, 获取 测量信息; 通过第一链路, 将获取的测量信息上报给无线网络控制器, 由无线网络控制器 进行切换的判决, 从而减少异频切换过程中对无线资源的占用, 并进而利用第二天线建立 新链路, 通过先建立新链路再断开旧链路的方式, 减少 UE的切换时间和掉话风险。 实施例 4
与上述方法实施例相应, 为了减少至少拥有两套天线的终端异频切换过程中对无线资 源的占用, 减少 UE的切换时间和掉话风险, 本发明实施例提供了一种小区切换的系统, 参 见图 10, 系统包括: 拥有至少两套天线的终端 801、 无线网络控制器 802, 其中。
终端 801, 用于获取终端 801所在当前小区的信号质量; 确定获取的信号质量低于预设 信号质量门限时, 利用第一套天线保持和无线网络控制器 802 的第一链路; 利用第二套天 线对当前小区的相邻小区进行测量, 获取测量信息; 通过第一链路, 将获取的测量信息上 报给无线网络控制器 802, 以使得无线网络控制器 802根据测量信息, 判定终端 801是否需 要进行小区间切换;
无线网络控制器 802,用于当终端 801获取的当前小区的信号质量低于预设信号质量门 限时, 利用终端 801的第一套天线和终端 801保持第一链路; 还用于接收终端 801通过第 一链路上报的测量信息; 还用于根据接收的测量信息, 判定终端 801 是否需要进行小区间 切换。
进一步地, 当终端 801需要进行小区间切换时, 贝 U,
终端 801, 还用于利用第二套天线经过目标小区的基站, 建立和无线网络控制器 802的 第二链路; 还用于当建立模块 404将第二链路建立成功后, 删除第一链路;
相应地,
无线网络控制器 802, 还用于通过目标小区的基站, 利用终端 801的第二套天线建立和 终端 801的第二链路; 当第二链路建立成功后, 删除第一链路。
本发明实施例提供的小区切换的系统, 由于终端拥有至少两套天线, 则利用第一套天 线保持和无线网络控制器的链路; 利用第二套天线对当前小区的相邻小区进行测量, 获取 测量信息; 通过第一链路, 将获取的测量信息上报给无线网络控制器, 由无线网络控制器 进行切换的判决, 从而减少异频切换过程中对无线资源的占用, 并进而利用第二天线建立 新链路, 通过先建立新链路再断开旧链路的方式, 减少 UE的切换时间和掉话风险。 本发明实施例中的 "接收"一词可以理解为主动从其他模块获取也可以是接收其他模 块发送来的信息。
本领域技术人员可以理解附图只是一个优选实施例的示意图, 附图中的模块或流程并 不一定是实施本发明所必须的。
本领域技术人员可以理解实施例中的装置中的模块可以按照实施例描述分布于实施例 的装置中, 也可以进行相应变化位于不同于本实施例的一个或多个装置中。 上述实施例的 模块可以合并为一个模块, 也可以进一步拆分成多个子模块。
上述本发明实施例序号仅仅为了描述, 不代表实施例的优劣。
本发明实施例中的部分步骤, 可以利用软件实现, 相应的软件程序可以存储在可读取 的存储介质中, 如光盘或硬盘等。
以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 凡在本发明的精神和原则 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、 一种小区切换的方法, 终端拥有一套天线, 其特征在于, 所述终端还拥有至少一套 天线, 所述方法包括:
所述终端获取当前小区的信号质量;
确定所述信号质量低于预设信号质量门限后, 利用第一套天线保持和无线网络控制器 的第一链路; 利用所述第二套天线对当前小区的相邻小区进行测量, 获取测量信息;
通过所述第一链路, 将获取的测量信息上报给所述无线网络控制器, 以使得所述无线 网络控制器根据所述测量信息, 判定所述终端是否需要进行小区间切换。
2、 如权利要求 1 所述的方法, 其特征在于, 所述测量信息包括: 所述当前小区和所 述相邻小区的公共导频信道的每个调制比特的能量与噪声功率之比 Ec/No值;
所述根据所述测量信息, 判定所述终端是否需要进行小区间切换, 包括:
根据预设门限值以及上报的 Ec/No值, 判定所述终端是否需要进行小区间切换。
3、 如权利要求 2所述的方法, 其特征在于,
所述测量信息还包括: 当前小区和所述相邻小区的时间差值, 所述时间差值用于当执 行小区切换时, 根据目标小区和当前小区的时间差值, 执行时间同步。
4、 如权利要求 1或 2或 3任一权利要求所述的方法, 其特征在于, 当所述终端需要进 行小区间切换时,所述方法还包括:
所述终端利用所述第二套天线经过所述目标小区的基站, 建立和所述无线网络控制器 的第二链路;
所述第二链路建立成功后, 删除所述第一链路。
5、 如权利要求 4所述的方法, 其特征在于, 所述终端通过目标小区的基站, 利用所述 第二套天线经过所述目标小区的基站, 建立和所述无线网络控制器的第二链路, 包括: 所述终端接收由所述目标小区的基站发送的无线链路建立请求, 所述无线链路建立请 求是所述无线网络控制器从所述终端上报的相邻小区中选择出目标小区后, 向所述目标小 区的基站下发的;
当所述终端接收到所述无线链路建立请求后, 通过物理通道向所述目标小区的基站发 送上行同步信号, 所述物理通道是所述目标小区的基站接收到所述无线链路建立请求后为 所述终端配置的;
所述终端接收由所述目标小区的基站发送的无线链路增加请求, 所述无线链路增加请 求是所述目标小区的基站收到所述上行同步信号, 向所述无线网络控制器返回无线链路建 立响应后, 由所述无线网络控制器向所述目标小区的基站下发的; 当所述终端接收到所述无线链路增加请求后, 通过所述第二套天线经过所述目标小区 的基站建立和所述无线网络控制器的第二链路。
6、 如权利要求 4或 5任一权利要求所述的方法, 其特征在于, 所述第二链路建立成功 后, 删除所述第一链路, 包括:
所述终端向所述无线网络控制器返回无线链路增加响应;
所述终端接收由所述当前小区的基站发送的无线链路删除请求, 所述无线链路删除请 求是所述无线网络控制器接收到所述无线链路增加响应后, 向所述当前小区的基站下发的; 当所述终端接收到所述无线链路删除请求后, 删除所述第一链路, 并通过所述第二链 路向所述无线网络控制器返回无线链路删除响应, 以使得所述无线网络控制器接收到所述 无线链路删除响应后, 向所述当前小区的基站发送无线链路删除请求, 使得所述当前小区 的基站接收到所述无线链路删除请求后, 释放无线资源, 并向所述无线网络控制器返回无 线链路删除响应。
7、 一种终端, 所述终端拥有一套天线, 其特征在于, 所述终端还拥有至少一套天线, 所述终端包括:
获取模块, 用于获取所述终端所在当前小区的信号质量;
处理模块, 用于确定所述获取模块获取的信号质量低于预设信号质量门限时, 利用第 一套天线保持和无线网络控制器的第一链路; 利用所述第二套天线对当前小区的相邻小区 进行测量, 获取测量信息;
上报模块, 用于通过所述第一链路, 将所述处理模块获取的测量信息上报给所述无线 网络控制器, 以使得所述无线网络控制器根据所述测量信息, 判定所述终端是否需要进行 小区间切换。
8、 如权利要求 7 所述的终端, 其特征在于, 当所述终端需要进行小区间切换时,所述 终端还包括:
建立模块, 用于利用所述第二套天线经过所述目标小区的基站, 建立和所述无线网络 控制器的第二链路;
删除模块, 用于当所述建立模块将所述第二链路建立成功后, 删除所述第一链路。
9、 如权利要求 8所述的终端, 其特征在于, 所述建立模块, 包括:
第一接收单元, 用于接收由所述目标小区的基站发送的无线链路建立请求, 所述无线 链路建立请求是所述无线网络控制器根据所述测量信息, 从所述终端上报的相邻小区中选 择出目标小区后, 向所述目标小区的基站下发的;
第一发送单元, 用于当所述第一接收单元接收到所述无线链路建立请求后, 通过物理 通道向所述目标小区的基站发送上行同步信号, 所述物理通道是所述目标小区的基站接收 到所述无线链路建立请求后为所述终端配置的;
第二接收单元, 用于接收由所述目标小区的基站发送的无线链路增加请求, 所述无线 链路增加请求是所述目标小区的基站收到所述上行同步信号, 向所述无线网络控制器返回 无线链路建立响应后, 由所述无线网络控制器向所述目标小区的基站下发的;
建立单元, 用于当所述第二接收单元接收到所述无线链路增加请求后, 通过所述第二 套天线经过所述目标小区的基站建立和所述无线网络控制器的第二链路。
10、 如权利要求 8或 9所述的终端, 其特征在于, 所述删除模块, 包括:
第二发送单元, 用于当所述建立单元将所述第二链路建立成功后, 向所述无线网络控 制器返回无线链路增加响应;
第三接收单元, 用于接收由所述当前小区的基站发送的无线链路删除请求, 所述无线 链路删除请求是所述无线网络控制器接收到所述无线链路增加响应后, 向所述当前小区的 基站下发的;
删除单元, 用于当第三接收单元接收到所述无线链路删除请求后, 删除所述第一链路, 并通过所述第二链路向所述无线网络控制器返回无线链路删除响应, 以使得所述无线网络 控制器接收到所述无线链路删除响应后, 向所述当前小区的基站发送无线链路删除请求, 使得所述当前小区的基站接收所述无线链路删除请求后, 释放无线资源, 并向所述无线网 络控制器返回无线链路删除响应。
11、 一种无线网络控制器, 其特征在于, 所述无线网络控制器包括:
保持模块, 用于当终端获取的当前小区的信号质量低于预设信号质量门限时, 利用所 述终端的第一套天线和所述终端保持第一链路, 所述终端至少拥有两套天线;
接收模块, 用于接收所述终端通过所述第一链路上报的测量信息, 所述测量信息是所 述终端利用所述第二套天线对当前小区的相邻小区进行测量后获取的;
判断模块, 用于根据所述接收模块接收的测量信息, 判定所述终端是否需要进行小区 间切换。
12、 如权利要求 11所述的无线网络控制器, 其特征在于, 所述测量信息包括: 所述当 前小区和所述相邻小区的公共导频信道的每个调制比特的能量与噪声功率之比 Ec/No值; 所述判断模块包括:
判断单元, 用于根据预设门限值以及上报的 Ec/No值, 判定所述终端是否需要进行小 区间切换。
13、 如权利要求 11或 12任一权利要求所述的无线网络控制器, 其特征在于, 所述无 线网络控制器还包括:
建立模块, 用于当所述判断模块判断的结果是所述终端需要进行小区间切换后, 通过 目标小区的基站, 利用所述终端的第二套天线建立和所述终端的第二链路;
删除模块, 用于当所述建立模块将所述第二链路建立成功后, 删除所述第一链路。
14、 如权利要求 13所述的无线网络控制器, 其特征在于, 所述建立模块包括: 选择单元, 用于根据所述接收模块接收的测量信息, 从所述终端上报的相邻小区中选 择出目标小区;
第一发送单元, 用于当所述选择单元选择出所述目标小区后, 向所述目标小区的基站 下发无线链路建立请求; 以使得所述目标小区的基站接收到所述无线链路建立请求后为所 述终端配置物理通道; 并将所述无线链路建立请求发送给所述终端, 以使得所述终端接收 到所述无线链路建立请求后, 通过所述物理通道向所述目标小区的基站发送上行同步信号; 第一接收单元, 用于接收无线链路建立响应, 所述无线链路建立响应是当所述目标小 区的基站收到所述上行同步信号, 向所述无线网络控制器返回的;
第二发送单元, 用于当所述第一接收单元接收到所述无线链路建立响应后, 向所述目 标小区的基站下发无线链路增加请求, 以使得所述目标小区的基站将所述无线链路增加请 求发送给所述终端, 使得所述终端接收到所述无线链路增加请求, 通过所述第二套天线经 过所述目标小区的基站建立和所述无线网络控制器的第二链路。
15、 如权利要求 13所述的无线网络控制器, 其特征在于, 所述删除模块, 包括: 第二接收单元, 用于当所述第二链路建立成功后, 接收所述终端返回的无线链路增加 响应;
第三发送单元, 用于当所述第二接收单元接收到所述无线链路增加响应后, 向所述当 前小区的基站下发无线链路删除请求; 以使得所述当前小区的基站将所述无线链路删除请 求发送给所述终端, 使得所述终端接收到所述无线链路删除请求后, 删除所述第一链路; 第三接收单元, 用于当删除所述第一链路后, 接收所述终端通过第二链路返回的无线 链路删除响应;
第四发送单元, 用于接收到所述终端通过所述第二链路返回的无线链路删除响应后, 向所述当前小区的基站发送无线链路删除请求, 使得所述当前小区的基站接收到所述无线 链路删除请求后, 释放无线资源, 返回无线链路删除响应;
第四接收单元, 用于接收所述当前小区的基站释放无线资源后返回的无线链路删除响 应。
PCT/CN2009/070916 2009-03-20 2009-03-20 一种小区切换的方法和设备 WO2010105436A1 (zh)

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