WO2011017948A1 - 小区切换方法和装置 - Google Patents

小区切换方法和装置 Download PDF

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Publication number
WO2011017948A1
WO2011017948A1 PCT/CN2010/072669 CN2010072669W WO2011017948A1 WO 2011017948 A1 WO2011017948 A1 WO 2011017948A1 CN 2010072669 W CN2010072669 W CN 2010072669W WO 2011017948 A1 WO2011017948 A1 WO 2011017948A1
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Prior art keywords
cell
candidate
vamos
priority
candidate cells
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PCT/CN2010/072669
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English (en)
French (fr)
Inventor
张爽
陈利军
赵志勇
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中兴通讯股份有限公司
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Priority to EP10807893.2A priority Critical patent/EP2466952A4/en
Publication of WO2011017948A1 publication Critical patent/WO2011017948A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support
    • 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/34Reselection control
    • H04W36/38Reselection control by fixed network equipment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information

Definitions

  • the present invention relates to the field of communications, and in particular to a cell handover method and apparatus.
  • BACKGROUND In a wireless communication network, due to the movement of a terminal location, the interference of the surrounding environment, and the change of the wireless environment, the quality of the communication of the terminal is degraded, and the call drop is easily caused. Since the wireless communication network is composed of multiple service cells, in this case, the service can be switched to the cell with good communication quality through the handover process to ensure the normal operation of the communication service and improve the network quality.
  • the so-called handover means that when a mobile station (Mobile Station, or MS) is called, it moves from one base station coverage area to another base station coverage area during a call, or, in the event of a call due to external interference When the quality is degraded, the original channel is changed and transferred to another idle channel to keep the call on.
  • intra-cell handovers based on different trigger conditions, such as: sub-cell handover, based on path loss time advancement (Time Advance, abbreviated as ⁇ ) and carrier-based interference ratio (Carrier/Interfere, C/I for short).
  • the interference problem can be solved by intra-cell handover.
  • Uplink/downlink quality switching When the receiving quality is poor and exceeds the predefined threshold, the inter-cell handover caused by the quality cause is triggered.
  • Uplink/downlink level switching in order to avoid low interference level, can not achieve the interference switching or quality switching conditions, in the case of more serious level attenuation, trigger the uplink/downlink level inter-cell handover.
  • Fast level-down switching an inter-cell handover algorithm that is used due to a drastic change in the wireless environment of the serving cell, causing a rapid drop in reception levels.
  • MS-Base Station Base Transceiver Station, BTS for short
  • BTS Base Transceiver Station
  • PBGT Key Buffer Genomy
  • macro-micro handover macro-micro handover
  • directional migration handover a flowchart of handover according to the related art.
  • the handover implementation process includes: cell level configuration, measurement report processing, handover algorithm selection, candidate cell selection, candidate cell ordering, and handover. Punish 3 ⁇ 4 strategy.
  • GSM Global System for Mobile Communication
  • voice services have also increased, putting tremendous pressure on existing networks.
  • the fierce market competition has made the price of voice services cheaper and cheaper. Therefore, operators expect to make full use of existing network hardware resources and improve spectrum resource utilization.
  • Voice services over Adaptive Multi-user Orthogonal Sub channels (VAMOS) multiplex two or more users into the same time slot, so that each BTS Voice capacity is improved.
  • VAMOS Adaptive Multi-user Orthogonal Sub channels
  • VAMOS introduces a new modulation mode ⁇ - Quadrate Phase Shift Keying ( a - QPSK ) to achieve multiplexing of two subchannels in the same time slot, which doubles each BTS transceiver. Capacity.
  • the new training sequence is used to improve the orthogonal correlation performance of the current training sequence.
  • the VAMOS channel can be full-rate and half-rate: Traffic Channel/Full Speed (TCH/FS), Traffic Channel/Half Speed (TCH/HS), and enhanced Traffic Channel/Enhanced Full Speed (TCH/EFS), Traffic Channel/Adaptive Full Speed (TCH/AFS), Adaptive Half Rate Voice Traffic Channel (Traffic) Channel/Adaptive Half Speed (referred to as TCH/AHS) and Wide Band Full Rate Full Traffic (TCH/WFS) and related joint signaling channels, the goal is not to reduce the call quality.
  • the VAMOS function needs to support the legacy Down-linked Advanced Receiver Performance (DARP) Phase 1 capability terminal or a dedicated VAMOS terminal support.
  • DARP Down-linked Advanced Receiver Performance
  • GMSK Gaussian Minimum Shift Keying
  • VAMOS allows two or more users to be multiplexed on the same time slot, doubling the capacity of the network.
  • some stations in the communication network are stationed earlier. Because some of the existing network equipment are outdated, some BTS-covered cells cannot support the VAMOS function, and the cells that open the VAMOS cannot form continuous coverage.
  • the candidate cell supports VAMOS, and some candidate cells do not support VAMOS.
  • the VAMOS terminal is switched to the candidate cell supporting VAMOS or the candidate cell not supporting VAMOS, and the impact on the network is different.
  • the main object of the present invention is to provide a cell handover.
  • a cell handover method includes: when performing cell handover, the network side acquires cell information of one or more candidate cells, where the cell information includes an identifier for indicating whether the candidate cell corresponding to the cell information supports the VAMOS; The network side determines a target cell for handover from one or more candidate cells according to the identifier.
  • the determining, by the network side, the target cell for the handover from the one or more candidate cells according to the identifier includes: the network side divides the candidate cell into two families according to whether the one or more candidate cells support VAMOS, and respectively is two families.
  • the candidate cells in the candidate set different family priorities, wherein the candidate cells belonging to the same family have the same family priority; the network side determines the family priority of one or more candidate cells from one or more candidate cells.
  • the determining, by the network side, the target cell for the handover from the one or more candidate cells according to the family priority of the one or more candidate cells further includes: the network side is each of the one or more candidate cells. A cell priority is set; the network side determines a target cell for handover from among candidate cells with the same family priority according to the cell priority of one or more candidate cells.
  • the candidate cell supporting the VAMOS has a higher priority than the candidate not supporting the VAMOS.
  • Priority of the cell if the candidate channel supporting the VAMOS in one or more candidate cells has less idle channels than the one that does not support VAMOS
  • the priority of the candidate cell supporting the VAMOS is lower than the priority of the candidate cell not supporting the VAMOS.
  • the family priority is higher than the cell priority.
  • the determining, by the network side, the target cell for the handover from the one or more candidate cells according to the cell information comprises: the network side according to the occurrence of the 'j, the zone switching terminal supports the VAMOS and the identifier from the one or more candidate cells Determine the target cell for handover.
  • a cell switching apparatus is provided.
  • the device according to the present invention is located on the network side, and includes: an acquiring module, configured to acquire cell information of one or more candidate cells, where the cell information includes an identifier for indicating whether a candidate cell corresponding to the cell information supports VAMOS; And determining, by using the cell information identifier, a target cell for handover from one or more candidate cells.
  • the handover module includes: a first priority processing sub-module, configured to: whether one or more candidate cells support VAMOS, the candidate 'j, is divided into two families, and respectively set different candidate cells in the two families The priority of the family of the candidate cells belonging to the same family is the same; the first handover submodule is configured to determine, from the one or more candidate cells, the target cell for handover according to the family priority.
  • the handover module further includes: a second priority processing submodule, configured to set a cell priority for each of the one or more candidate cells; and a second switching submodule, configured to use the family priority and The cell priority determines a target cell for handover from among one or more candidate cells.
  • the handover module further includes: a determining submodule, configured to determine whether the idle channel of the candidate cell supporting the VAMOS in the one or more candidate cells is more than or equal to the idle channel of the candidate cell not supporting the VAMOS;
  • the sub-module is specifically configured to: when the determining sub-module determines that the idle channel of the candidate cell supporting the VAMOS in the one or more candidate cells is more than or equal to the idle channel of the candidate cell that does not support the VAMOS, setting a family of candidate cells supporting the VAMOS The priority is higher than the priority of the candidate cell that does not support the VAMOS.
  • the determining sub-module determines that the candidate channel supporting the VAMOS in the one or more candidate cells has less idle channels than the candidate cells that do not support the VAMOS
  • the setting is set.
  • the priority of the candidate cell supporting the VAMOS is lower than the priority of the candidate cell not supporting the VAMOS.
  • the cell information used in the candidate cell is added to indicate that the candidate cell is Whether the identity of the VAMOS is supported or not, the network side is located in the target cell to select the handover, and the related technology does not distinguish whether the candidate cell supports the VAMOS, which may cause the network load of the target cell to increase, thereby causing a decrease in network quality, thereby achieving The effect of optimizing network resources and improving spectrum utilization.
  • FIG. 1 is a flowchart of a handover according to a related art
  • FIG. 2 is a flowchart of a cell handover method according to an embodiment of the present invention
  • FIG. 3 is a specific method for handover target cell according to an embodiment of the present invention
  • Figure 4 is a flow chart of a method according to a first embodiment of the present invention
  • Figure 5 is a flow chart of a method according to Embodiment 2 of the present invention
  • Figure 6 is a flow chart of a method according to Embodiment 3 of the present invention
  • 7 is a structural block diagram of an apparatus according to an embodiment of the present invention
  • FIG. 8 is a block diagram showing a preferred configuration of the apparatus in the embodiment of the present invention
  • FIG. 9 is another block diagram of another preferred configuration of the apparatus in the embodiment of the present invention.
  • a cell handover method includes: when performing cell handover, the network side acquires cell information of one or more candidate cells, where the cell information includes a candidate for indicating the cell information, j, and a region. Whether the identifier of the VAMOS is supported; the network side determines the target cell for handover from the one or more candidate cells according to the identifier.
  • FIG. 2 is a flowchart of a cell switching method according to an embodiment of the present invention.
  • the process includes the following steps S202 to 4:
  • Step S202 When performing cell handover, the network side (for example, the BSC, the BSC is taken as an example for description, but is not limited thereto), the cell information of one or more candidate cells is acquired, where the cell information includes Whether the target cell corresponding to the cell information supports the identity of the VAMOS.
  • Step S204 The BSC determines a target cell for handover from one or more candidate cells according to whether the VAMOS identifier is carried in the cell information.
  • step S204 may include the steps in FIG. 3, where FIG. 3 is a flowchart of a specific method for switching a target cell according to an embodiment of the present invention, as shown in FIG.
  • the step of determining the target cell for handover from the one or more candidate cells according to the identifier may be: Step S302: The BSC divides the candidate cell into two families according to whether one or more candidate cells support VAMOS, and respectively The candidate cells in the family set the ranking selection priorities of different families (which may also be referred to as family priorities). Among them, the candidate cells belonging to the same family have the same family priority. The priority of the two families is set in the application scenario and network conditions.
  • Step S304 the BSC sets a cell for each of one or more candidate cells.
  • each candidate cell sets a candidate cell priority according to other set decision conditions (eg, network traffic, handover success rate, etc.).
  • the cell priority of the BSC in one or more candidate cells is determined from the candidate cells with the same family priority.
  • the candidate cell supporting the VAMOS has a higher priority than the candidate not supporting the VAMOS.
  • FIG. 4 is a flowchart of a method according to Embodiment 1 of the present invention. As shown in FIG.
  • the method includes the following steps: step S402 to step 4: S402: Step S402: When performing cell handover, the BSC acquires cell information of one or more candidate cells that meet the handover trigger condition, where the cell The information includes an identifier for indicating whether the candidate cell corresponding to the cell information supports the VAMOS. Step S404: The BSC divides the candidate cells into two switching families, Class A and Class B, according to the acquired cell identifier, and sets the priority of the different families for the candidate cells in the two families. Among them, Class A contains all candidate cells supporting VAMOS, and the Class B switching family contains all candidate cells that do not support VAMOS. The priority of Class A and Class B is set in the application scenario and the network.
  • the candidate cells belonging to the same family have the same priority.
  • the priority of the two switch families is the priority of the switch family.
  • Step S406 the BSC sets priorities for all candidate cells in Class A and Class B according to other set decision conditions (eg, network traffic volume, handover success rate, etc.), where each family The internal candidate 'j, the area priority is the intra-family candidate 'j, the area priority level;
  • Step S408 The BSC classifies the candidate cells according to the priority of the switching family and the candidate cell priority within the family, and determines In the target cell of the handover.
  • Step S502 When performing cell handover, the BSC is in the process of sorting candidate cells according to the acquisition.
  • the cell identifier divides all candidate cells satisfying the handover condition into two switching families, Class A and Class B. Class A includes all candidate cells supporting VAMOS, and Class B includes all candidate cells that do not support VAMOS.
  • Step S504 Set the family priority.
  • the BSC defines the priority of the candidate cell supporting VAMOS (ie, Class A) as 1, and the candidate cell that does not support VAMOS (ie, Class B) is defined as 0.
  • the priority 1 supporting the VAMOS cell is higher than the priority 0 of the cell not supporting VAMOS.
  • Step S506 Set the candidate cell priority in the family.
  • the BSC sets priority to candidate cells in Class A and Class B according to other setting conditions (eg, network traffic, handover success rate, etc.). Among them, eight priority levels are defined, that is, 0-7 levels, 0 has the lowest priority, and 7 has the highest priority.
  • the ordering of specific priorities may be determined according to the number of candidate cells in Class A.
  • Step S508 The BSC performs priority ordering of the two-dimensional combination on the candidate cells.
  • the priority of each candidate cell is determined by two parameters, which are the family priority and the priority of the candidate cells in the family.
  • the candidate cells are prioritized according to the priority of the two-dimensional combination.
  • Table 1 is a way to prioritize candidate cells, as shown in Table 1.
  • Table 1 Switching family priority (the candidate cell priority in the step family (step candidate cell final priority ordering S504) Step S506) (Step S508)
  • Step S510 The candidate cells are two-dimensionally sorted according to the priority of the switching family and the candidate cell priority within the family, and the target cell used for handover is determined.
  • the number of idle channels supporting the VAMOS cell is smaller than the number of idle channels that do not support the VAMOS cell, it is considered to preferentially switch the terminal supporting the VAMOS to the candidate cell that does not support the VAMOS.
  • FIG. 6 is a flowchart of a method according to Embodiment 3 of the present invention. As shown in FIG. 6, the method includes the following steps S602 to S610: Step S602, when the cell is switched, the BSC is in the process of selecting the candidate 'j, the area is sorted.
  • all candidate cells satisfying the handover condition are divided into two switching families: Class A and Class B.
  • Class A includes all candidate cells supporting VAMOS
  • Class B includes all candidate cells that do not support VAMOS.
  • Step S604 Set the family priority.
  • the BSC defines the Class A priority as 0, the priority of Class B is defined as 1, and the priority 1 of the candidate cell that does not support VAMOS is higher than the priority 0 of the candidate cell that supports VAMOS.
  • Step S606 Set the candidate cell priority in the family.
  • the BSC sets priorities to candidate cells within the Class B and Class A switching families according to other conditions (eg, network traffic, handover success rate, etc.).
  • Step S608 The BSC performs priority ordering of the two-dimensional combination on the candidate cells.
  • the priority of each candidate cell is determined by two parameters, which are the family priority and the priority of the candidate cells within the family.
  • the candidate cells are prioritized according to the priority of the two-dimensional combination.
  • Table 2 is a way to prioritize candidates, j, and regions, as shown in Table 2.
  • FIG. 7 is a block diagram of a device structure according to an embodiment of the present invention. As shown in FIG. 7, the device includes: an obtaining module 72 and a switching module 74. The structure will be described in detail below.
  • the obtaining module 72 is configured to acquire cell information of one or more candidate cells, where the cell information includes an identifier for indicating whether the candidate cell corresponding to the cell information supports the VAMOS, and the switching module 74 is connected to the obtaining module 72, according to Cell information identification from one or more candidate small
  • the target cell for handover is determined in the zone.
  • FIG. 8 is a block diagram showing a preferred structure of a device according to an embodiment of the present invention. As shown in FIG. 8, the switching module 74 includes: a first priority processing sub-module 82 and a first switching sub-module 84, which are specifically described below. . a first priority processing sub-module 82, configured to support according to one or more candidate cells
  • the VAMOS divides the candidate cells into two families, and sets different family priorities for the candidate cells in the two families, wherein the candidate cells belonging to the same family have the same family priority; the first switching sub-module 84 is connected to the first The priority processing sub-module 82 is configured to determine a target cell for handover from one or more candidate cells according to a family priority of one or more candidate cells. As shown in FIG. 8, the switching module 74 further includes: a determining sub-module 86, the determining sub-module 86 is connected to the first priority processing sub-module 82, and configured to determine the idleness of the candidate cell supporting the VAMOS in the one or more candidate cells.
  • the first priority processing sub-module 82 is specifically configured to determine, in the determining sub-module 86, that the candidate cell supporting the VAMOS in the one or more candidate cells has more idle channels than Or equal to the idle channel of the candidate cell that does not support the VAMOS, the family priority of the candidate cell supporting the VAMOS is set higher than the family priority of the candidate cell that does not support the VAMOS; and the determining sub-module 86 determines one or more candidate cells.
  • FIG. 9 is another block diagram of another preferred structure of the apparatus according to the embodiment of the present invention.
  • the switching module 74 further includes: a second priority processing sub-module 92 and a second switching sub-module 94. Make a specific description.
  • a second priority processing sub-module 92 configured to set a cell priority for each of the one or more candidate cells; the second switching sub-module 94 is connected to the first priority processing sub-module 82 and the The two priority processing sub-module 92 is configured to determine a target cell for handover from one or more candidate cells for the family priority and the candidate cell priority.
  • the first priority processing sub-module 82 sets the family priority higher than the candidate cell priority set from the second priority processing sub-module 92.
  • the present invention can selectively switch whether the candidate cell supports VAMOS as one of the consideration conditions for determining the target cell for handover after the cell handover is triggered by the network side.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

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Abstract

本发明公开了一种小区切换方法和装置,该方法包括:在进行小区切换时,网络侧获取一个或多个候选小区的小区信息,其中,小区信息中包括用于指示小区信息对应的候选小区是否支持 VAMOS的标识;网 络侧根据标识从一个或多个候选小区中确定用于切换的目标小区。通过本发明,优化网络资源、提高频谱利用率。

Description

小区切换方法和装置 技术领域 本发明涉及通信领域, 具体而言, 涉及一种小区切换方法和装置。 背景技术 在无线通讯网络中, 由于终端位置的移动、 周围环境的千扰、 以及无线 环境的变化等, 会导致终端通讯质量的下降, 从而容易引起掉话。 由于无线 通讯网络由多个服务小区组成, 因此, 在这种情况下, 可以通过切换流程将 业务切换到通讯质量好的小区, 保证通讯业务的正常进行, 提高网络质量。 所谓切换, 就是指当移动台 ( Mobile Station , 简称为 MS; 或者也称为 终端),, 在通话过程中从一个基站覆盖区移动到另一个基站覆盖区, 或者, 在由于外界千扰造成通话质量下降时, 改变原有的信道, 转接到另一条空闲 信道上去, 使通话继续保持的过程。 基于不同触发条件的小区内切换类别有很多, 例如: 子小区切换, 基于路径损耗时间提前 ( Time Advance , 简称为 ΤΑ ) 和 基于承载千扰比 (Carrier/Interfere, 简称为 C/I ) 的同心圓技术和双频共小区 的小区内切换。 上行 /下行千扰切换, 当千扰发生时, 小区内的各个信道千扰是不一样 的, 因此, 可以通过小区内切换, 解决千扰问题。 上行 /下行质量切换, 当接收质量比较差, 超过了预定义门限值后, 触 发质量原因引起的小区间切换。 上行 /下行电平切换, 为了避免千扰电平较低, 不能达到千扰切换或质 量切换条件, 在电平衰减较为严重的场合, 触发上行 /下行电平小区间切换。 快速电平下降切换,由于服务小区的无线环境发生剧烈变化导致接收电 平快速下降而釆用的一种小区间切换算法。 此夕卜, 还有 MS-基站 (Base Transceiver Station, 简称为 BTS ) 超距切 换、 基于键路损耗预算(Power BudGeT, 简称为 PBGT )切换、 宏微切换和 定向迁移切换等小区间切换。 图 1是根据相关技术的切换的流程图,如图 1所示,切换实现流程包括: 小区层次的配置、 测量报告的处理、 切换算法的选择、 候选小区的选择、 候 选小区的排序和切换的惩 ¾策略。 随着全求移动通信 ( Global system for Mobile Communication, 简称为 GSM )用户数量的增加, 语音业务也随之增加, 给现有的网络带来巨大的压 力。 激烈的市场竟争导致语音业务的价格越来越便宜, 因此, 运营商期望能 够更充分地利用现有的网络硬件资源, 提高频谱资源利用率。 自适应多用户 正交子信道语音月艮务 ( Voice services over Adaptive Multi-user Orthogonal Sub channels , 简称为 VAMOS )将两个或更多的用户复用到同一个时隙上, 使每 个 BTS的语音容量得到提高。
VAMOS 引入新的调制方式 α -正交相位偏移键控 ( a - Quadrate Phase Shift Keying,简称为 a -QPSK )实现两个子信道复用同一个时隙,使每个 BTS 收发信机提高两倍的容量。 并釆用新的训练序列, 改良了现在的训练序列的 正交相关性能。 VAMOS 信道可以是全速率和半速率: 全速率语音业务信道 ( Traffic Channel/ Full Speed,简称为 TCH/FS )、半速率语音业务信道( Traffic Channel/ Half Speed, 简称为 TCH/HS )、 加强全速率语音业务信道 (Traffic Channel/ Enhanced Full Speed, 简称为 TCH/EFS )、 自适应全速率语音业务信 道 ( Traffic Channel/ Adaptive Full Speed, 简称为 TCH/AFS )、 自适应半速率 语音业务信道 ( Traffic Channel/ Adaptive Half Speed, 简称为 TCH/AHS ) 和 宽谱带全速率语音业务信道 ( Traffic Channel/ Wideband Full Speed, 简称为 TCH/WFS )及相关联合信令信道, 目标是不降低通话质量。 VAMOS功能需 要支持传统下行链路高效接收机性能 ( Down-linked Advanced Receiver Performance, 简称为 DARP )相位( Phase ) 1能力的终端或者专门的 VAMOS 终端支持。 传统的高斯最小移频键控( Gaussian Minimum Shift Keying , 简称 为 GMSK ) 终端可以接入到 VAMOS小区, 但仍然保持原来的调制方式。
VAMOS允许同一个时隙上复用两个或以上的用户, 使网络的容量提升 一倍。 但是, 目前通讯网络中有的站点建站较早, 由于部分现网设备陈旧, 一些 BTS覆盖的小区无法支持 VAMOS功能,导致开通 VAMOS的小区不能 形成连续的覆盖。 发生小区切换的时候, 在满足条件的候选小区列表中, 有 的候选小区支持 VAMOS , 有的候选小区不支持 VAMOS。 在不同的情况下, 支持 VAMOS终端切换到支持 VAMOS的候选小区还是不支持 VAMOS的候 选小区,对网络的影响是不同的。例如,支持 VAMOS终端切换到支持 VAMOS 的目标小区, 可以与其他用户复用同一个时隙, 使频谱利用率得到提高。 而 且, VAMOS使无线资源调度更加灵活, 能有效地緩解网络负荷。 然而, 在相关技术中, 并不区分切换的候选小区是否支持 VAMOS , 因 此, 有可能导致目标小区的网络符合增大从而引起网络质量下降。 发明内容 针对相关技术不区分候选小区是否支持 VAMOS 而可能会导致目标小 区的网络负荷增大从而引起网络质量的下降的问题而提出本发明, 为此, 本 发明的主要目的在于提供一种小区切换方案, 以解决上述问题至少之一。 为了实现上述目的,根据本发明的一个方面,提供了一种小区切换方法。 才艮据本发明的切换方法包括: 在进行小区切换时, 网络侧获取一个或多 个候选小区的小区信息, 其中, 小区信息中包括用于指示小区信息对应的候 选小区是否支持 VAMOS的标识; 网络侧根据标识从一个或多个候选小区中 确定用于切换的目标小区。 优选地,网络侧根据标识从一个或多个候选小区中确定用于切换的目标 小区包括: 网络侧根据一个或多个候选小区是否支持 VAMOS将候选小区分 成两个族, 并分别为两个族中的候选小区设置不同的族优先级, 其中, 属于 同一族的候选小区的族优先级相同; 网络侧才艮据一个或多个候选小区的族优 先级从一个或多个候选小区中确定用于切换的目标小区。 优选地,网络侧才艮据一个或多个候选小区的族优先级从一个或多个候选 小区中确定用于切换的目标小区还包括: 网络侧为一个或多个候选小区中的 每个小区都设置一个小区优先级; 网络侧根据一个或多个候选小区的小区优 先级从族优先级相同的候选小区中确定用于切换的目标小区。 优选地,如果一个或多个候选小区中支持 VAMOS的候选小区的空闲信 道多于或等于不支持 VAMOS的候选小区的空闲信道, 则支持 VAMOS的候 选小区的族优先级高于不支持 VAMOS的候选小区的优先级; 如果一个或多 个候选小区中支持 VAMOS的候选小区的空闲信道少于不支持 VAMOS的候 选小区的空闲信道, 则支持 VAMOS 的候选小区的族优先级低于不支持 VAMOS的候选小区的优先级。 优选地, 族优先级高于小区优先级。 优选地,网络侧才艮据小区信息从一个或多个候选小区中确定用于切换的 目标小区包括: 网络侧根据发生 'j、区切换的终端是否支持 VAMOS和标识从 一个或多个候选小区中确定用于切换的目标小区。 为了实现上述目的,根据本发明的另一方面,提供了一种小区切换装置。 根据本发明的装置位于网络侧, 包括: 获取模块, 用于获取一个或多个 候选小区的小区信息, 其中, 小区信息中包括用于指示小区信息对应的候选 小区是否支持 VAMOS的标识; 切换模块, 用于根据小区信息标识从一个或 多个候选小区中确定用于切换的目标小区。 优选地, 切换模块包括: 第一优先级处理子模块, 用于 居一个或多个 候选小区是否支持 VAMOS将候选 'j、区分成两个族, 并分别为两个族中的候 选小区设置不同的族优先级, 其中,属于同一族的候选小区的族优先级相同; 第一切换子模块, 用于根据族优先级从一个或多个候选小区中确定用于切换 的目标小区。 优选地, 切换模块还包括: 第二优先级处理子模块, 用于为一个或多个 候选小区中的每个小区都设置一个小区优先级; 第二切换子模块, 用于根据 族优先级和小区优先级从一个或多个候选小区中确定用于切换的目标小区。 优选地, 切换模块还包括: 判断子模块, 用于判断一个或多个候选小区 中支持 VAMOS的候选小区的空闲信道是否多于或等于不支持 VAMOS的候 选小区的空闲信道; 第一优先级处理子模块具体用于在判断子模块判定一个 或多个候选小区中支持 VAMOS 的候选小区的空闲信道多于或等于不支持 VAMOS的候选小区的空闲信道的情况下, 设置支持 VAMOS的候选小区的 族优先级高于不支持 VAMOS的候选小区的优先级, 在判断子模块判定一个 或多个候选小区中支持 VAMOS的候选小区的空闲信道少于不支持 VAMOS 的候选小区的空闲信道的情况下, 设置支持 VAMOS的候选小区的族优先级 低于不支持 VAMOS的候选小区的优先级。 通过本发明,釆用在候选小区的小区信息中添加用于指示该候选小区是 否支持 VAMOS的标识, 网络侧 居该标识选择切换的目标小区, 解决了相 关技术不区分候选小区是否支持 VAMOS而可能会导致目标小区的网络负荷 增大从而引起网络质量的下降的问题, 进而达到了优化网络资源、 提高频谱 利用率的效果。 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是根据相关技术的切换的流程图; 图 2是才艮据本发明实施例的小区切换方法的流程图; 图 3是 居本发明实施例的切换目标小区的具体方法的流程图; 图 4是根据本发明实施例一的方法的流程图; 图 5是根据本发明实施例二的方法的流程图; 图 6是根据本发明实施例三的方法的流程图; 图 7是 居本发明实施例的装置的结构框图; 图 8是 居本发明实施例的装置优选的结构框图; 图 9是 居本发明实施例的装置另一种优选的结构框图。 具体实施方式 需要说明的是, 在不冲突的情况下, 本申请中的实施例及实施例中的特 征可以相互组合。 下面将参考附图并结合实施例来详细说明本发明。 在以下实施例中,在附图的流程图示出的步 4聚可以在诸如一组计算机可 执行指令的计算机系统中执行, 并且, 虽然在流程图中示出了逻辑顺序, 但 是在某些情况下, 可以以不同于此处的顺序执行所示出或描述的步骤。 在以下的实施例中, 考虑到相关技术不区分候选小区是否支持 VAMOS 而可能会导致目标小区的网络负荷增大从而引起网络质量的下降的问题, 提 供了一种小区切换方法, 该方法包括: 在进行小区切换时, 网络侧获取一个 或多个候选小区的小区信息, 其中, 小区信息中包括用于指示该小区信息对 应的候选 ,j、区是否支持 VAMOS的标识; 该网络侧根据标识从上述一个或多 个候选小区中确定用于切换的目标小区。 通过本发明实施例可以使网络侧在 进行小区切换时, 在对候选小区排序过程中, 定义优先级时增加一个考虑因 素, 即候选小区是否支持 VAMOS , 通过优先级的定义, 使候选小区在排序 过程中, 能够有选择性的切换到对网络资源利用更有利的目标小区, 降低相 关技术不区分候选小区是否支持 VAMOS而导致的由于目标小区的容量有限 而对目标小区的网络负荷带来压力以及引起的网络质量下降, 具有优化网络 资源、 提高频谱利用率的优点。 下面结合附图对本发明的一个实施例进行说明,, 图 2是才艮据本发明实 施例的小区切换方法的流程图, 如图 2 所示, 该流程包括如下的步骤 S202 至步 4聚 S204: 步骤 S202, 在进行小区切换时, 网络侧 (例如 BSC, 以下以 BSC为例 进行说明, 但并不限于此) 获取一个或多个候选小区的小区信息, 其中, 小 区信息中包括用于指示小区信息对应的目标小区是否支持 VAMOS的标识。 步骤 S204 , BSC根据小区信息中携带的是否支持 VAMOS的标识从一 个或多个候选小区中确定用于切换的目标小区。 通过上述步骤 S202和步骤 S204, 在切换过程中, 考虑了候选小区是否 支持 VAMOS。 因此, 可以根据不同的应用情况釆用不同的优先级定义, 从 而提高网络资源利用率, 提升网络质量。 在本发明的另一实施例中, 步骤 S204可以包括图 3中的步骤, 其中, 图 3是才艮据本发明实施例的切换目标小区的具体方法的流程图,如图 3所示, BSC 才艮据标识从一个或多个候选小区中确定用于切换的目标小区的步骤可 以为: 步骤 S302, BSC根据一个或多个候选小区是否支持 VAMOS将候选小 区分成两个族, 并分别为两个族中的候选小区设置不同族的排序选择优先级 (也可以称为族优先级)。 其中, 属于同一族的候选小区的族优先级相同。 两 个族的优先级 居应用场景和网络情况进行设置。 步骤 S304, BSC为一个或多个候选小区中的每个小区都设置一个小区 优先级, 每个候选小区根据其它设定的判决条件 (例如: 网络话务量、 切换 成功率等)设置候选小区优先级。 步骤 S306, BSC 居一个或多个候选小区的小区优先级从族优先级相 同的候选小区中确定用于切换的目标小区。 优选地,如果一个或多个候选小区中支持 VAMOS的候选小区的空闲信 道多于或等于不支持 VAMOS的目标小区的空闲信道, 则支持 VAMOS的候 选小区的族优先级高于不支持 VAMOS的候选小区的优先级; 如果一个或多 个候选小区中支持 VAMOS的候选小区的空闲信道少于不支持 VAMOS的候 选小区的空闲信道, 则支持 VAMOS 的候选小区的族优先级低于不支持 VAMOS的候选小区的优先级。 优选地, 族优先级高于小区优先级。 优选地, BSC也可以根据发生小区切换的终端是否支持 VAMOS 和标 识从一个或多个候选小区中确定用于切换的目标小区。 下面对以上实施例的变型实施例进行说明。 实施例一 图 4是才艮据本发明实施例一的方法流程图。 如图 4所示, 该方法包括如 下的步 4聚 S402至步 4聚 S406: 步骤 S402, 在进行小区切换时, BSC获取一个或多个满足切换触发条 件的候选小区的小区信息, 其中, 小区信息中包括用于指示小区信息对应的 候选小区是否支持 VAMOS的标识。 步骤 S404, BSC根据获取的小区标识将候选小区分为族 ( Class ) A和 族(Class ) B两个切换族, 并分别为两个族中的候选小区设置不同族的排序 选择优先级。 其中, Class A包含所有支持 VAMOS的候选小区, Class B切 换族包含所有不支持 VAMOS 的候选小区。 居应用场景和网络情况设置 Class A和 Class B的优先级, 属于同一族的候选小区的族优先级相同, 这两 个切换族的排序选择优先级即为切换族优先级。 步骤 S406, BSC根据其它设定的判决条件 (例如: 网络话务量、 切换 成功率等)为 Class A和 Class B内的所有候选小区设置优先级, 其中, 各族 内部各个候选 'j、区优先级即为族内候选 'j、区优先级; 步骤 S408: BSC才艮据切换族的优先级和族内候选小区优先级对候选小 区进行二维排序, 确定用于切换的目标小区。 实施例二 在支持 VAMOS小区的空闲信道数大于或等于不支持 VAMOS小区的空 闲信道数的情况下, 优先将支持 VAMOS的终端切换到支持 VAMOS的候选 小区。 图 5是 居本发明实施例二的方法流程图, 如图 5所示, 该方法包括 如下的步骤 S502至步骤 S510: 步骤 S502, 进行小区切换时, BSC在候选小区排序的过程中, 根据获 取的小区标识将所有满足切换条件的候选小区分成 Class A和 Class B两个切 换族, Class A包括所有支持 VAMOS的候选小区, Class B包括所有不支持 VAMOS的候选小区。 步骤 S504: 设置族优先级。 BSC将支持 VAMOS的候选小区 (即 Class A ) 的优先级定义为 1 , 不支持 VAMOS的候选小区 (即 Class B ) 定义为 0。 支持 VAMOS小区的优先级 1高于不支持 VAMOS的小区的优先级 0。 步骤 S506: 设置族内候选小区优先级。 BSC根据其它设定条件(例如: 网络话务量、 切换成功率等)设置优先级分别对 Class A和 Class B内的候选 小区。 其中, 定义 8个优先级等级, 即 0-7级, 0的优先级最低, 7的优先级 最高。 首先, 在族优先级为 1的 Class A内根据其它条件进行排序, 从 7开 始排序, 具体优先级的排序可以根据 Class A内的候选小区的数量决定。 例 如: Class A内候选小区有 3个, 那么优先级顺序为 7, 6, 5。 然后, 在优先 级比较低的 Class B内的候选小区根据其它条件进行排序, Class B内的 5个 候选小区的优先级顺序为 7, 6, 5 , 4, 3。 步骤 S508: BSC对候选小区进行二维组合的优先级排序。 其中, 每个 候选小区的优先级由两个参数决定, 这两个参数分别为族优先级、 族内候选 小区的优先级。 根据二维组合的优先级对候选小区进行最后的优先级排序。 表 1是一种对候选小区进行优先级排序的方式, 如表 1所示。 表 1 切换族优先级(步骤 族内候选小区优先级(步 候选小区最终优先级排序 S504 ) 骤 S506 ) (步骤 S508 )
1 ( Class A ) 7 1
1 ( Class A ) 6 2
1 ( Class A ) 5 3
0 ( Class B ) 7 4
0 ( Class B ) 6 5
0 ( Class B ) 5 6
0 ( Class B ) 4 7
0 ( Class B ) 3 8 步骤 S510: 才艮据切换族的优先级和族内候选小区优先级对候选小区进 行二维排序, 确定用于切换的目标小区。 实施例三 在支持 VAMOS小区的空闲信道数小于不支持 VAMOS小区的空闲信道 数的情况下, 考虑优先将支持 VAMOS的终端切换到不支持 VAMOS的候选 小区。 图 6是 居本发明实施例三的方法流程图, 如图 6所示, 该方法包括 如下的步骤 S602至步骤 S610: 步骤 S602 , 小区切换时, BSC在候选 'j、区排序的过程中, 才艮据获取的 小区标识将所有满足切换条件的候选小区分成 Class A和 Class B两个切换 族, Class A 包括所有支持 VAMOS 的候选小区, Class B 包括所有不支持 VAMOS的候选小区。 步骤 S604: 设置族优先级。 BSC将 Class A优先级定义为 0, Class B 的优先级定义为 1 ,不支持 VAMOS的候选小区的优先级 1高于支持 VAMOS 的候选小区的优先级 0。 步骤 S606: 设置族内候选小区优先级。 BSC根据其它条件 (例如: 网 络话务量、 切换成功率等)设置优先级分别对 Class B和 Class A切换族内的 候选小区。 定义 8个优先级等级, 即 0-7级, 0的优先级最低, 7的优先级最 高。 首先, 在 Class B内支持 VAMOS的候选小区内才艮据其他条件进行排序, 然后才艮据其他条件对 Class A内的候选小区进行排序。 比如: Class B内候选 小区有 5个, 那么优先级顺序为 7, 6, 5 , 4, 3。 Class A内候选小区有 3个, 那么优先级顺序为 7, 6, 5。 步骤 S608: BSC对候选小区进行二维组合的优先级排序。 每个候选小 区的优先级由两个参数决定, 这两个参数分别为族优先级、 族内候选小区的 优先级。 根据二维组合的优先级对候选小区进行最后的优先级排序。 表 2是 一种对候选 ,j、区进行优先级排序的方式, 如表 2所示。 表 2
Figure imgf000012_0001
从以上的描述中, 可以看出, 本发明实现了如下技术效果: 将候选小区 是否支持 VAMOS作为确定用于切换的目标小区的考虑条件之一, 优化了网 络资源, 提高了频谱利用率。 在另一个实施例中, 还提供了一种装置, 图 7是 居本发明实施例的装 置结构框图, 如图 7所示, 该装置包括: 获取模块 72 , 切换模块 74。 下面 对该结构进行详细的描述。 获取模块 72 , 用于获取一个或多个候选小区的小区信息, 其中, 小区 信息中包括用于指示小区信息对应的候选小区是否支持 VAMOS的标识; 切 换模块 74连接至获取模块 72 , 用于根据小区信息标识从一个或多个候选小 区中确定用于切换的目标小区。 图 8是根据本发明实施例的装置优选的结构框图, 如图 8所示, 切换模 块 74包括: 第一优先级处理子模块 82和第一切换子模块 84 , 下面对其进行 具体的描述。 第一优先级处理子模块 82 , 用于根据一个或多个候选小区是否支持
VAMOS 将候选小区分成两个族, 并分别为两个族中的候选小区设置不同的 族优先级, 其中, 属于同一族的候选小区的族优先级相同; 第一切换子模块 84 连接至第一优先级处理子模块 82 , 用于才艮据一个或多个候选小区的族优 先级从一个或多个候选小区中确定用于切换的目标小区。 如图 8所示, 切换模块 74还包括: 判断子模块 86 , 该判断子模块 86 连接至第一优先级处理子模块 82 , 用于判断一个或多个候选小区中支持 VAMOS的候选小区的空闲信道是否多于或等于不支持 VAMOS的候选小区 的空闲信道; 第一优先级处理子模块 82具体用于在判断子模块 86判定一个 或多个候选小区中支持 VAMOS 的候选小区的空闲信道多于或等于不支持 VAMOS的候选小区的空闲信道的情况下, 设置支持 VAMOS的候选小区的 族优先级高于不支持 VAMOS 的候选小区的族优先级; 在判断子模块 86判 定一个或多个候选小区中支持 VAMOS 的候选小区的空闲信道少于不支持 VAMOS的候选小区的空闲信道的情况下, 设置支持 VAMOS的候选小区的 族优先级低于不支持 VAMOS的候选小区的族优先级。 图 9是 居本发明实施例的装置另一种优选的结构框图, 如图 9所示, 切换模块 74还包括: 第二优先级处理子模块 92和第二切换子模块 94 , 下面 对其进行具体的描述。 第二优先级处理子模块 92 , 用于为一个或多个候选小区中的每个小区 都设置一个小区优先级; 第二切换子模块 94 连接至连接至第一优先级处理 子模块 82和第二优先级处理子模块 92 , 用于 居族优先级和候选小区优先 级从一个或多个候选小区中确定用于切换的目标小区。 在本发明实施例中, 第一优先级处理子模块 82设置的族优先级高于来 自第二优先级处理子模块 92设置的候选小区优先级。 综上所述, 本发明通过网络侧在小区切换触发后, 将候选小区是否支持 VAMOS 作为确定用于切换的目标小区的考虑条件之一, 能有选择性的切换 到对网络资源利用更有利的候选小区,优化了网络资源,提高了频谱利用率。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 或 者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软 件结合。 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 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 ^"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 一种小区切换方法, 其特征在于, 包括:
在进行 'j、区切换时, 网络侧获取一个或多个候选小区的小区信息, 其中, 所述小区信息中包括用于指示所述小区信息对应的候选小区是否 支持 VAMOS的标 K;
所述网络侧才艮据所述标识从所述一个或多个候选小区中确定用于 切换的目标小区。 根据权利要求 1所述的方法, 其特征在于, 所述网络侧根据所述标识从 所述一个或多个候选小区中确定所述用于切换的目标小区包括:
所述网络侧才艮据所述一个或多个候选小区是否支持 VAMOS 将候 选小区分成两个族, 并分别为所述两个族中的候选小区设置不同的族优 先级, 其中, 属于同一族的候选小区的族优先级相同;
所述网络侧根据所述一个或多个候选小区的族优先级从所述一个 或多个候选小区中确定所述用于切换的目标小区。 才艮据权利要求 2所述的方法, 其特征在于, 所述网络侧 -据所述一个或 多个候选小区的族优先级从所述一个或多个候选小区中确定所述用于切 换的目标小区包括:
所述网络侧为所述一个或多个候选小区中的每个小区都设置一个 小区优先级;
所述网络侧根据所述一个或多个候选小区的小区优先级从所述族 优先级相同的候选小区中确定所述用于切换的目标小区。 根据权利要求 2或 3所述的方法, 其特征在于, 如果所述一个或多个候 选小区中支持 VAMOS 的候选小区的空闲信道多于或等于不支持 VAMOS 的候选小区的空闲信道, 则所述支持 VAMOS 的候选小区的族 优先级高于所述不支持 VAMOS的候选小区的优先级; 如果所述一个或 多个候选小区中支持 VAMOS 的候选小区的空闲信道少于不支持 VAMOS 的候选小区的空闲信道, 则所述支持 VAMOS 的候选小区的族 优先级氏于所述不支持 VAMOS的候选小区的优先级。
5. 根据权利要求 3所述的方法, 其特征在于, 所述族优先级高于所述小区 优先级。
6. 根据权利要求 1至 3中任一项所述的方法, 其特征在于, 所述网络侧根 据所述小区信息从所述一个或多个候选小区中确定用于切换的目标小区 包括:
所述网络侧根据发生所述小区切换的终端是否支持 VAMOS 和所 述标识从所述一个或多个候选小区中确定所述用于切换的目标小区。
7. —种小区切换装置, 位于网络侧, 其特征在于, 包括:
获取模块, 用于获取一个或多个候选小区的小区信息, 其中, 所述 小区信息中包括用于指示所述小区信息对应的候选小区是否支持 VAMOS的标识;
切换模块,用于根据所述小区信息标识从所述一个或多个候选小区 中确定用于切换的目标小区。
8. 根据权利要求 7所述的装置, 其特征在于, 所述切换模块包括:
第一优先级处理子模块,用于根据所述一个或多个候选小区是否支 持 VAMOS将候选小区分成两个族, 并分别为所述两个族中的候选小区 设置不同的族优先级, 其中, 属于同一族的候选小区的族优先级相同; 第一切换子模块,用于根据所述族优先级从所述一个或多个候选小 区中确定所述用于切换的目标小区。
9. 根据权利要求 8所述的装置, 其特征在于, 所述切换模块还包括: 第二优先级处理子模块,用于为所述一个或多个候选小区中的每个 小区都设置一个小区优先级;
第二切换子模块,用于 居所述族优先级和所述小区优先级从所述 一个或多个候选小区中确定所述用于切换的目标小区。
10. 根据权利要求 8或 9所述的装置, 其特征在于, 所述切换模块还包括: 判断子模块,用于判断所述一个或多个候选小区中支持 VAMOS的 候选小区的空闲信道是否多于或等于不支持 VAMOS的候选小区的空闲 信道; 所述第一优先级处理子模块具体用于在所述判断子模块判定所述 一个或多个候选小区中支持 VAMOS的候选小区的空闲信道多于或等于 不支持 VAMOS的候选小区的空闲信道的情况下,设置所述支持 VAMOS 的候选小区的族优先级高于所述不支持 VAMOS的候选小区的优先级, 在所述判断子模块判定所述一个或多个候选小区中支持 VAMOS的候选 小区的空闲信道少于不支持 VAMOS的候选小区的空闲信道的情况下, 设置所述支持 VAMOS 的候选小区的族优先级低于所述不支持 VAMOS 的候选小区的优先级。
PCT/CN2010/072669 2009-08-14 2010-05-12 小区切换方法和装置 WO2011017948A1 (zh)

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