WO2009117974A1 - 无线通信的方法、基站、室内通信系统及切换方法 - Google Patents

无线通信的方法、基站、室内通信系统及切换方法 Download PDF

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Publication number
WO2009117974A1
WO2009117974A1 PCT/CN2009/071927 CN2009071927W WO2009117974A1 WO 2009117974 A1 WO2009117974 A1 WO 2009117974A1 CN 2009071927 W CN2009071927 W CN 2009071927W WO 2009117974 A1 WO2009117974 A1 WO 2009117974A1
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Prior art keywords
frequency
carrier frequency
indoor coverage
working
working frequency
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PCT/CN2009/071927
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English (en)
French (fr)
Inventor
陈林
邓爱林
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华为技术有限公司
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Publication of WO2009117974A1 publication Critical patent/WO2009117974A1/zh
Priority to US12/882,675 priority Critical patent/US20110009149A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0055Transmission or use of information for re-establishing the radio link
    • H04W36/0072Transmission or use of information for re-establishing the radio link of resource information of target access point

Definitions

  • Wireless communication method base station, indoor communication system and switching method
  • the present invention relates to the field of wireless communication technologies, and in particular, to a method, a base station, an indoor communication system, and a handover method for wireless communication.
  • the CDMA (Code Division Multiple Access) indoor coverage system includes a CDMA signal source and an indoor distributed antenna system; wherein, the CDMA signal source can be a repeater or a base station, and the working frequency of the CDMA signal source and the outdoor macrocell can be the same. , can also be different, if the same, the same frequency soft switching can be performed between the CDMA indoor coverage system and the outdoor macro cell.
  • the signals of multiple outdoor macrocell base stations and the indoor system signals of different frequency points can be simultaneously received in the adjacent window region of the high-rise building.
  • the terminal in the CDMA system usually preferentially resides at the basic frequency of the outdoor macro cell, thereby causing the terminal in the CDMA system to be unable to camp on the indoor coverage.
  • CDMA indoor and outdoor inter-frequency networking solutions have been difficult to promote.
  • Embodiments of the present invention provide a method, a base station, an indoor communication system, and a handover method for wireless communication, so as to ensure that indoor terminals preferentially reside in an inter-frequency network that is indoorly covered, thereby solving the problem of co-channel interference and improving wireless communication.
  • the communication quality of the system is not limited to, but not limited to, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, Wi-Fi, and Wi-Fi, and Wi-Fi Protectet Radio Service
  • a method for wireless communication presetting the operating frequency of the indoor coverage system service carrier frequency is different from the working frequency of the outdoor macro cellular system service carrier frequency, the working frequency of the indoor coverage system beacon carrier frequency and the outdoor macrocell
  • the working frequency of the system service carrier frequency is the same, and the common channel is allocated on the beacon carrier frequency of the indoor coverage system, and the method includes:
  • a base station comprising:
  • the service carrier frequency unit is configured to preset the working frequency of the service carrier frequency of the indoor coverage system to be different from the working frequency of the outdoor macro cellular system service carrier frequency;
  • the beacon carrier frequency unit is configured to preset the working frequency of the beacon carrier frequency to be the same as the working frequency of the outdoor macro cellular system service carrier frequency, and allocate a common channel on the beacon carrier frequency of the indoor coverage system, The common channel transmits a system message including only working frequency information of the indoor coverage system service carrier frequency at a working frequency point of the indoor coverage system beacon carrier frequency.
  • An indoor communication system comprising:
  • the base station is configured to preset the working frequency of the indoor coverage system service carrier frequency to be different from the working frequency of the outdoor macro cellular system service carrier frequency, and the working frequency of the indoor coverage system beacon carrier frequency and the outdoor macro cellular system service
  • the working frequency of the frequency is the same, and a common channel is allocated on the beacon carrier frequency of the indoor coverage system, and the working frequency of the beacon carrier frequency of the indoor coverage system is transmitted through the common channel, and only the indoor coverage system is included.
  • a system message of the service frequency information of the service carrier the system message is used to guide the mobile terminal to migrate to the working frequency of the indoor coverage service carrier frequency;
  • An indoor distributed antenna for receiving and transmitting information for the base station.
  • a method for switching between wireless communication systems comprising:
  • the system receives the system message sent by the indoor coverage system through the working frequency of the beacon carrier frequency, and the system message only includes the indoor coverage system.
  • Working frequency information of the service carrier frequency, the indoor coverage system is different from the operating frequency of the service carrier of the outdoor macro cellular system, and the working frequency of the beacon carrier frequency of the indoor coverage system and the service of the outdoor macro cellular system
  • the frequency of the carrier frequency is the same;
  • the mobile terminal switches to the working frequency of the service carrier frequency of the indoor coverage system according to the working frequency information of the service carrier frequency of the indoor coverage system included in the system message.
  • a method for switching between wireless communication systems comprising:
  • the pre-configured inter-frequency neighboring cell information is obtained, where the inter-frequency neighboring cell information includes: a cell and an outdoor macro of the working frequency of the indoor coverage system service carrier frequency
  • the cells of the working frequency of the carrier frequency of the cellular system service are mutually different frequency neighboring areas;
  • the mobile terminal switches from the working frequency of the indoor coverage system service carrier frequency to the working frequency of the outdoor macro cellular system service carrier frequency according to the inter-frequency neighboring cell information.
  • the base station providing the signal source is implemented by the base station including the beacon carrier frequency, thereby implementing the inter-frequency mixing mode between adjacent wireless communication systems.
  • the mobile terminal can smoothly relocate and smoothly switch to the indoor coverage system, effectively solving the problem of co-channel interference and pilot pollution existing between the indoor coverage system and the outdoor macro-cellular system, and improving the communication quality of the wireless communication system.
  • FIG. 1 is a schematic diagram of a scenario in which pilot pollution exists in the prior art
  • FIG. 2 is a schematic structural diagram of a wireless communication system according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of an indoor coverage system of a base station including two common beacon carrier frequencies according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a base station indoor coverage system including a frequency hopping beacon carrier frequency according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a frequency hopping process according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • a common channel and a service channel are allocated on a service carrier frequency of an indoor coverage system, and a working frequency of the service carrier frequency is different from a working frequency of an outdoor macro cellular system service carrier frequency,
  • To implement an inter-frequency networking to allocate a common channel on the beacon carrier frequency of the indoor coverage system, And transmitting, by using the common channel, a system message that includes only the working frequency information of the service carrier frequency of the indoor coverage system, and the working frequency of the beacon carrier frequency is the same as the working frequency of the service carrier of the outdoor macro cellular system, so as to pass
  • the same-frequency guiding manner enables the mobile terminal to smoothly switch or camp in the indoor coverage system, even if the mobile terminal can access the working frequency of the service carrier frequency of the indoor coverage system according to the information in the corresponding system message.
  • the working frequency of the beacon carrier frequency of the indoor coverage system may be fixedly set to the working frequency of the service carrier frequency of the outdoor macro cellular system; or the working frequency of the beacon carrier frequency may also be It is set to poll and schedule the working frequency of the service carrier frequency of the outdoor macro cellular system, that is, the frequency of each service carrier frequency of the outdoor macro cellular system is applied as the working frequency of the beacon carrier of the indoor coverage system by means of frequency hopping.
  • the frequency point for example, periodically cyclically changes within the frequency range of the outdoor macro cellular system to replace multiple independent beacon carrier frequencies.
  • the pre-configured frequency hopping configuration information needs to be obtained in the foregoing process, so as to determine the working frequency of the beacon carrier frequency according to the corresponding frequency hopping configuration information, where the frequency hopping configuration information may be Including the working frequency points included in the frequency hopping range (ie, the operating frequency of each service carrier frequency of the outdoor macro cellular system) and the hopping mode between the included working frequency points (such as frequency hopping period or hopping interval time, etc.) , and many more.
  • the working frequency of the service carrier frequency of the indoor coverage system and the working frequency of the service carrier frequency of the outdoor macro cellular system may be set as an inter-frequency neighboring zone;
  • the working frequency of the beacon carrier frequency and the working frequency of the service carrier frequency of the outdoor macro cellular system are set to the same frequency neighboring zone.
  • the corresponding intra-frequency neighboring zone and the inter-frequency neighboring zone are set in the base station controller.
  • the indoor coverage system and the outdoor macro cellular system may belong to the same operator, or may belong to different operators, may be the same mode communication network, or may be different mode communication networks.
  • a method for switching between the wireless communication systems is further provided, which may specifically include the following processes:
  • the mobile terminal moves from the outdoor macro cellular system to the indoor coverage system, and the indoor coverage system and the outdoor macro cellular system have different operating frequency frequencies, and constitute an inter-frequency neighboring zone;
  • the mobile terminal receives a system message sent by the indoor coverage system through the working frequency of the beacon carrier frequency,
  • the system message only includes the working frequency information of the service carrier frequency of the indoor coverage system, and the working frequency of the beacon carrier frequency is the same as the working frequency of the service carrier frequency of the outdoor macro cellular system, and the two constitute the same Frequency neighboring area;
  • the mobile terminal can smoothly switch the working frequency of the service carrier frequency of the indoor coverage system according to the working frequency information of the service carrier frequency of the indoor coverage system included in the system message, that is, send the signal carrier frequency through the beacon carrier.
  • the guidance of the system messages makes it possible to smoothly switch from the outdoor macro cellular system to the indoor coverage system.
  • the wireless communication network of the cellular system it can be applied to various indoor coverage systems and outdoor macro cellular systems in various general concepts with serious pilot pollution phenomena, for example, wireless including elevated bridges and roads.
  • a communication network scenario or in a wireless communication network scenario that includes a specific surface such as a wide surface of water, sea, or high ground, and the like. In order to overcome the corresponding pilot pollution phenomenon, the communication quality under different coverage areas is improved.
  • a corresponding indoor solution is shown in FIG. 2, including a base station system including a beacon carrier frequency (ie, an indoor coverage base station) and an indoor distribution.
  • An antenna system wherein, the operating frequency of the indoor coverage base station and the service frequency of the service carrier of the outdoor macro cellular system are set differently to avoid generating the same frequency between the indoor coverage system and the outdoor macro cellular system Interference, pilot pollution, etc.;
  • the service carrier frequency of the indoor coverage base station includes both a CDMA common channel and a traffic channel for absorbing indoor traffic and providing access services for mobile terminals in the indoor coverage area;
  • the included one or more beacon carrier frequencies have at least a corresponding CDMA forward common channel, and the working frequency of the beacon carrier frequency is the same as the operating frequency of the outdoor macro cellular system, and the beacon carrier frequency is used to make the indoor frequency
  • the CDMA mobile terminal can reliably reside in the indoor inter-frequency network (ie, the indoor coverage system), and can also be moved.
  • the embodiments of the present invention can be applied to both the CDMA IX system and the EVDO system, and can also be applied to other mobile communication systems having similar problems.
  • the corresponding outdoor macrocell system ie, the adjacent wireless communication system
  • the adjacent wireless communication system has two working frequency points, namely F1 frequency point and F2 frequency point respectively; corresponding CDMA indoor coverage system
  • the base station system and the indoor distributed antenna system including two beacon carrier frequencies are included; wherein, the operating frequency of the base station system in the CDMA indoor coverage system is F3 frequency, and the two beacons included therein
  • the frequency operating frequencies are respectively F1 frequency point and F2 frequency point, and the two beacon carrier frequencies each have a forward CDMA common channel, and keep transmitting corresponding forward common information messages continuously.
  • the channel list field in the system message of the beacon carrier frequency F1 frequency point, the beacon carrier frequency working frequency point F2 frequency point and the indoor coverage carrier F3 frequency point sent to the mobile terminal under the respective common channel are both
  • the CDMA mobile terminal indoors can select to camp on the F3 frequency point of the indoor inter-frequency network according to the frequency point information in the channel list field in the system message.
  • the call processing process of the mobile terminal in the indoor coverage system includes: when the mobile terminal in the indoor coverage system is powered on, the frequency of the basic frequency point F1 where the beacon carrier frequency is located is preferentially captured, and the frequency is from the F1 frequency point.
  • the forward common channel receives the system message. Since the channel list field of the system message includes only the working frequency point F3 frequency of the service carrier frequency of the indoor coverage system, the mobile terminal will according to the information in the system message and the CDMA mobile communication standard.
  • the HASH (Hash) algorithm automatically shifts from the F1 frequency point to the F3 frequency point of the indoor coverage service carrier frequency, so that the subsequent communication process will be on the F3 frequency point of the indoor coverage system. Initiate a call or receive a page.
  • the corresponding system message may include, but is not limited to, a synchronization channel message, a channel list message, a system parameter message, a neighbor list message, and the like.
  • the F3 frequency point of the indoor coverage system is different from the F1 frequency point and the F2 frequency point of the outdoor macro cellular system, the same-frequency interference problem existing in the same-frequency networking mode can be effectively avoided, and thus significant Improve the quality of communication in the room.
  • the handover process between the indoor and the outdoor of the mobile terminal includes: (1) a handover process of the mobile terminal from indoor to outdoor
  • the handover process of the mobile terminal in an idle state includes:
  • the F1 frequency point and the F2 frequency point cell of the outdoor macro cellular system are configured in advance as indoor base station corresponding F3 frequency-frequency inter-frequency neighboring area, so that in the process of moving the mobile terminal from indoor to outdoor, the corresponding inter-frequency neighboring area information of the indoor base station can be switched accordingly to switch to the outdoor macro-cellular system.
  • the F1 and F2 frequency points realize a smooth idle switching operation of the mobile terminal from indoor to outdoor;
  • the mobile terminal handover process in the service state includes:
  • the cells of the F1 frequency point and the F2 frequency point of the outdoor macro-cellular system are configured in advance as the inter-frequency neighboring areas of the F3 frequency points corresponding to the indoor base station, and then the mobile-assisted hard handover (MAHHO) mode can be used to implement the service state.
  • the handover process of the mobile terminal in an idle state includes:
  • the working frequency point F1 frequency of the beacon carrier frequency of the indoor coverage system is pre-configured as the same frequency adjacent area of the F1 frequency of the outdoor macro cellular system, and the working frequency of the indoor beacon carrier frequency is F2.
  • the same frequency neighboring area configured as the operating frequency point F2 frequency of the outdoor macro cellular system thus, if the mobile terminal first resides in the F1 frequency point of the outdoor macro cellular system and moves to the indoor coverage system, the idle switching will be performed first. Go to the beacon carrier frequency F1 frequency point, and receive the F3 frequency point channel list transmitted by the beacon carrier frequency F1 frequency point on the F1 frequency point of the indoor coverage system's beacon carrier frequency.
  • the mobile terminal handover process in the service state includes:
  • the working frequency point F1 frequency of the beacon carrier frequency of the indoor coverage system is pre-configured as the same-frequency adjacent area of the F1 frequency of the outdoor macro-cellular system, and the frequency F2 frequency of the beacon carrier frequency of the indoor coverage system is configured as The same frequency neighboring area of the F2 frequency of the working frequency of the outdoor macro cellular system; thus, if the mobile terminal is in the service communication state (ie, in the service state) and moves indoors at the frequency F1 of the outdoor macro cellular system In the guidance of the beacon carrier frequency F1 frequency, the F3 carrier (ie, F3 frequency point) of the indoor coverage system will be hard-switched to continue communication. Switch to the indoor coverage system working frequency point F3 frequency point because There is interference between the operating frequency point F1 frequency point and the F2 frequency point of the outdoor macro cellular system, so that good communication quality can be ensured.
  • the outdoor macro cellular system includes two working frequency points, namely an F1 frequency point and an F2 frequency point;
  • the CDMA indoor coverage system includes a base station including a frequency hopping beacon carrier frequency.
  • System and indoor distributed antenna system wherein, the operating frequency of the indoor coverage base station is F3 frequency point, and the working frequency of the frequency hopping beacon carrier frequency included between the F1 frequency point and the F2 frequency point is The predetermined period hopping, correspondingly within a hop period, the beacon carrier frequency through the working frequency point F1 frequency point and the F2 frequency point should at least each transmit a complete forward CDMA common channel message to the mobile terminal, so that the mobile terminal The complete forward CDMA common channel message can be used to access the indoor coverage system.
  • the indoor CDMA mobile terminal can reside. Go to the F3 frequency of the working frequency of the indoor inter-frequency network, that is, access the communication network through the CDMA indoor coverage system.
  • the corresponding complete forward CDMA common channel message may include: a synchronization channel message, a channel list message, a system parameter message, a neighbor list message, and the like.
  • the corresponding frequency hopping process may include:
  • Step 501 Obtain frequency hopping configuration information, where the frequency hopping configuration information includes a working frequency point included in the frequency hopping range, and a hopping manner between the included working frequency points, for example, a hopping transmission time TX ONDUR, and a frequency hopping frequency Shutdown time TX—OFFDUR;
  • Step 502 Determine whether the current frequency hopping working state is a transmitting state or an off state. If it is a transmitting state, perform steps 503 to 507. If the state is a shutdown state, perform steps 508 to 512; Step 503, perform statistical total frequency hopping. Launch time
  • Steps 504, 505, determining whether the accumulated cumulative frequency hopping transmission time is greater than the frequency hopping transmission time TX ONDUR, and if yes, executing step 506, otherwise, performing step 503;
  • Steps 506 and 507 blocking the transmission power of the channel (ie, the carrier channel) of the current frequency hopping frequency, and setting the working state to the shutdown state, and performing step 501 again.
  • the channel ie, the carrier channel
  • Step 508 calculating a cumulative frequency hopping off time
  • Step 509, 510 determining whether the accumulated cumulative frequency hopping off time is greater than the frequency hopping off time TX OFFDUR, and if so, executing step 511, otherwise, performing step 508; Steps 511, 512, configuring the current frequency hopping frequency (ie, the frequency of the carrier channel) as the next hopping frequency point in the working frequency point included in the frequency hopping range, and setting the working state to the transmitting state, and performing step 501 again.
  • the current frequency hopping frequency ie, the frequency of the carrier channel
  • the base station including the frequency hopping beacon carrier frequency is used as the indoor coverage system signal source instead of the base station including the multiple communication standard carrier frequency, the number of carriers required by the base station can be reduced, and the implementation cost of the base station is effectively saved. Moreover, when the outdoor macrocell system is expanded, such as when expanding from 2 carriers to 3 carriers, the indoor coverage system only needs to perform corresponding data setting (such as modifying the frequency range in the frequency hopping process through the corresponding interface), and No hardware modifications are required.
  • the implementation can be effectively implemented using the multi-carrier characteristics of the base station to reduce the application cost of the embodiment of the present invention.
  • the embodiment of the present invention further provides an indoor communication system and a base station, and the specific implementation structure thereof is as shown in FIG. 6.
  • the corresponding indoor communication system may specifically include:
  • a base station configured to allocate a common channel and a traffic channel on a service carrier frequency of the indoor coverage system, where a service frequency of the service carrier frequency is different from a service frequency of the service carrier frequency of the outdoor macro cellular system; and, for indoor coverage
  • a common channel is allocated on the beacon carrier frequency of the system, and a system message containing only the working frequency point information of the service frequency of the indoor coverage system is transmitted through the common channel, and the working frequency of the beacon carrier frequency and the service of the outdoor macro cellular system
  • the frequency of the carrier frequency is the same;
  • An indoor distributed antenna is configured to receive and transmit information for the base station, so as to implement interaction of information between the base station and the mobile terminal.
  • the base station may specifically include the following units:
  • the service carrier unit can be further divided into a service carrier baseband unit for performing baseband partial processing and a radio frequency unit in a service carrier frequency for performing intermediate radio section processing;
  • a beacon carrier unit configured to allocate a common channel on a beacon carrier frequency of the indoor coverage system, and send a system message including only working frequency information of the indoor coverage system service carrier frequency through the common channel, and the beacon
  • the working frequency of the carrier frequency is the same as the working frequency of the service carrier of the outdoor macro cellular system; the beacon
  • the working frequency of the beacon carrier frequency applied by the carrier unit may be set to a fixed operating frequency of each service carrier frequency of the outdoor macro cellular system, or may be set to use the outdoor macro cellular system for polling scheduling.
  • each service carrier frequency that is, the frequency of the corresponding beacon carrier frequency is determined by means of frequency hopping; likewise, since the base station can include a baseband subsystem and a medium RF subsystem, the beacon carries
  • the frequency unit can also be further divided into a beacon carrier frequency baseband unit for performing baseband partial processing and a beacon carrier frequency radio frequency unit for performing intermediate radio frequency partial processing.
  • the base station may further include a frequency hopping configuration information acquiring unit, configured to acquire the frequency hopping configuration information, and determine the beacon carrier according to the frequency hopping configuration information, if the hopping frequency is used to determine the working frequency of the beacon carrier frequency.
  • a corresponding power subsystem can also be included, through which the base station is powered.
  • a wireless communication system (such as a CDMA indoor coverage system) that provides a signal source by using a wireless communication device such as a base station including a beacon carrier frequency, thereby achieving indoor coverage
  • a wireless communication device such as a base station including a beacon carrier frequency
  • the different frequency networking mode between the system and the outdoor macro cellular system enables the mobile terminal to smoothly reside and smoothly switch to the corresponding wireless communication system, effectively solving the same frequency existing between the indoor coverage system and the outdoor macro cellular system.
  • Interference and pilot pollution issues provide communication quality for wireless communication systems.
  • the base station with the beacon carrier frequency is used as a guide and the implementation of the inter-frequency bearer service is implemented, so that the mobile terminal can smoothly reside and smoothly switch to the indoor coverage system.
  • the service of the embodiment of the present invention is carried on the inter-frequency carrier, so that the indoor service can completely occupy the radio resource of the outdoor macro-cellular system, thereby significantly improving the spectrum utilization rate of the network.
  • the embodiment of the present invention can effectively improve network quality and system capacity as compared with a CDMA indoor coverage system that provides a signal source by a repeater.

Description

无线通信的方法、 基站、 室内通信系统及切换方法
本申请要求于 2008 年 3 月 27 日提交中国专利局、 申请号为 200810102852.6、 发明名称为"一种基站、 无线通信系统及切换方法"的中国专 利申请的优先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术领域, 尤其涉及无线通信的方法、基站、 室内通 信系统及切换方法。
背景技术
在移动通信网络中, 大部分的移动通信话务量均发生于室内,使得移动通 信网络的室内覆盖质量对终端用户体验的影响较大, 即为改善终端用户体验, 则需要提升室内覆盖质量。
目前, CDMA (码分多址) 室内覆盖系统包括 CDMA信号源和室内分布 天线系统两部分; 其中, CDMA信号源可以为直放站或基站, 其工作频点和 室外宏蜂窝的频点可以相同, 也可以不同, 若相同, 则 CDMA室内覆盖系统 和室外宏蜂窝之间可以进行同频软切换。
在实现本发明过程中, 发明人发现现有技术中至少存在如下问题:
( 1 )若室内系统和室外系统之间釆用同频组网的实现方案, 则如图 1所 示,由于高层建筑邻窗区域通常可以同时接收到多个室外宏蜂窝基站的同频信 号, 而且, 相应的室外宏蜂窝到高层建筑窗口之间的电波衰耗较小, 因而相应 的信号较强, 这必然会对室内覆盖釆用的同频信号形成干扰,从而形成了导频 污染。 相应的导频污染将导致处于相应区域中的终端容易出现掉网、 掉话、 通 话质量差、 数据传输速率低等问题, 影响终端用户的体验。
( 2 )若室内系统和室外系统之间釆用异频组网的实现方案, 则在高层建 筑邻窗区域可以同时接收到多个室外宏蜂窝基站的信号及不同频点的室内系 统信号的情况下, 由于 CDMA系统中移动终端的选网策略的局限,使得 CDMA 系统中的终端通常将优先驻留在室外宏蜂窝的基本频点,进而导致 CDMA系统 中的终端无法驻留到室内覆盖的异频网中,使得 CDMA室内和室外异频组网方 案一直难以推广。
同时, 在其他类似无线通信系统中也存在同样的问题。 发明内容
本发明的实施例提供了无线通信的方法、基站、室内通信系统及切换方法 , 以保证室内终端优先驻留到室内覆盖的异频网中, 从而可以解决同频干扰问 题, 并可以提高无线通信系统的通信质量。
一种无线通信的方法,预先设置室内覆盖系统业务载频的工作频点与室外 宏蜂窝系统业务载频的工作频点不同,所述室内覆盖系统信标载频的工作频点 与室外宏蜂窝系统业务载频的工作频点相同,并在所述室内覆盖系统的信标载 频上分配公共信道, 所述方法包括:
通过所述公共信道,在所述室内覆盖系统信标载频的工作频点发送仅包含 室内覆盖系统的业务载频的工作频点信息的系统消息,所述系统消息用于引导 移动终端迁移到所述室内覆盖业务载频的工作频点。
一种基站, 包括:
业务载频单元,用于预先设置室内覆盖系统的业务载频的工作频点与室外 宏蜂窝系统业务载频的工作频点不同;
信标载频单元,用于预先设置信标载频的工作频点与室外宏蜂窝系统业务 载频的工作频点相同, 并在所述室内覆盖系统的信标载频上分配公共信道,通 过所述公共信道在所述室内覆盖系统信标载频的工作频点发送仅包含室内覆 盖系统业务载频的工作频点信息的系统消息。
一种室内通信系统, 包括:
基站,用于预先设置室内覆盖系统业务载频的工作频点与室外宏蜂窝系统 业务载频的工作频点不同,所述室内覆盖系统信标载频的工作频点与室外宏蜂 窝系统业务载频的工作频点相同,并在所述室内覆盖系统的信标载频上分配公 共信道,通过所述公共信道,在所述室内覆盖系统信标载频的工作频点发送仅 包含室内覆盖系统的业务载频的工作频点信息的系统消息,所述系统消息用于 引导移动终端迁移到所述室内覆盖业务载频的工作频点;
室内分布式天线, 用于为所述基站接收及发送信息。
一种无线通信系统间的切换方法, 包括:
移动终端从室外宏蜂窝系统移动到室内覆盖系统时,接收室内覆盖系统通 过信标载频的工作频点发送的系统消息,该系统消息中仅包含室内覆盖系统的 业务载频的工作频点信息,所述室内覆盖系统与室外宏蜂窝系统的业务载频的 工作频点不同,且所述室内覆盖系统信标载频的工作频点与室外宏蜂窝系统的 业务载频的工作频点相同;
移动终端根据所述系统消息中包含的室内覆盖系统的业务载频的工作频 点信息, 切换到所述室内覆盖系统的业务载频的工作频点上。
一种无线通信系统间的切换方法, 包括:
移动终端从室内覆盖系统移动到室外宏蜂窝系统时 ,获取预先配置的异频 邻区信息, 所述异频邻区信息包括: 所述室内覆盖系统业务载频的工作频点的 小区和室外宏蜂窝系统业务载频的工作频点的小区互为异频邻区;
移动终端根据所述异频邻区信息从所述室内覆盖系统业务载频的工作频 点切换到所述室外宏蜂窝系统业务载频的工作频点。
由上述本发明的实施例提供的技术方案可以看出,其釆用包含信标载频的 基站提供信号源的实现方式,从而实现相邻无线通信系统之间的异频混合的组 网方式,使得移动终端能够顺利的驻留和平滑的切换到室内覆盖系统中,有效 解决室内覆盖系统与室外宏蜂窝系统之间存在的同频干扰和导频污染问题,提 高了无线通信系统的通信质量。
附图说明
图 1为现有技术中存在导频污染的场景示意图;
图 2为本发明实施例提供的无线通信系统结构示意图;
图 3 为本发明实施例中包含二个普通的信标载频的基站的室内覆盖系统 的结构示意图;
图 4 为本发明实施例中包含一个跳频信标载频的基站室内覆盖系统的结 构示意图;
图 5为本发明实施例提供的跳频处理过程示意图;
图 6为本发明实施例提供的基站的结构示意图。
具体实施方式
本发明实施例提供的无线通信方案中,在室内覆盖系统的业务载频上分配 公共信道和业务信道,且该业务载频的工作频点与室外宏蜂窝系统业务载频的 工作频点不同,以实现异频组网;在室内覆盖系统的信标载频上分配公共信道, 并通过该公共信道发送仅包含室内覆盖系统的业务载频的工作频点信息的系 统消息, 该信标载频的工作频点与室外宏蜂窝系统业务载频的工作频点相同, 以便于通过同频引导的方式使得移动终端可以顺利切换或驻留到室内覆盖系 统中,即便于移动终端可以根据相应的系统消息中的信息接入到该室内覆盖系 统的业务载频的工作频点上。
本发明实施例中,室内覆盖系统的信标载频的工作频点可以固定设置为所 述室外宏蜂窝系统的业务载频的工作频点; 或者, 该信标载频的工作频点也可 以设置为轮询调度使用室外宏蜂窝系统的业务载频的工作频点,即釆用跳频的 方式应用室外宏蜂窝系统的各个业务载频的工作频点作为室内覆盖系统信标 载频的工作频点, 例如, 在室外宏蜂窝系统的频点范围内周期性的循环改变, 以替代多个独立的信标载频。
若釆用跳频的方式,则上述处理过程中还需要获取预先配置的跳频配置信 息, 以便于根据相应的跳频配置信息确定信标载频的工作频点, 其中, 跳频配 置信息可以包括跳频范围包含的工作频点(即室外宏蜂窝系统的各个业务载频 的工作频点)和在包含的工作频点之间的跳变方式 (如跳频周期或跳频间隔时 间等) , 等等。
为便于切换, 本发明实施例中,还可以将室内覆盖系统的业务载频的工作 频点和室外宏蜂窝系统的业务载频的工作频点之间设置为异频邻区;将室内覆 盖系统的信标载频的工作频点和与室外宏蜂窝系统的业务载频的工作频点之 间设置为同频邻区。例如, 在基站控制器中进行相应的同频邻区及异频邻区的 设置。
本发明实施例中, 室内覆盖系统与室外宏蜂窝系统可以属于同一运营商, 也可以属于不同的运营商, 可以为相同模式的通信网络, 也可以为不同模式的 通信网络。
本发明实施例中,还提供了相应的无线通信系统间切换的方法, 具体可以 包括以下处理过程:
移动终端从室外宏蜂窝系统中移动到室内覆盖系统中,且室内覆盖系统与 室外宏蜂窝系统的业务载频的工作频点不同, 构成异频邻区;
移动终端接收室内覆盖系统通过信标载频的工作频点发送的系统消息,该 系统消息中仅包含室内覆盖系统的业务载频的工作频点信息,且该信标载频的 工作频点与室外宏蜂窝系统的业务载频的工作频点相同,该两者之间构成同频 邻区;
移动终端根据所述系统消息中包含的室内覆盖系统的业务载频的工作频 点信息,便可以平滑切换接入到室内覆盖系统的业务载频的工作频点上, 即通 过信标载频发送的系统消息的引导,使得可以从室外宏蜂窝系统顺利的切换到 室内覆盖系统中。 蜂窝系统的无线通信网络中,即可以应用于各种存在严重的导频污染现象的各 种广义概念下的室内覆盖系统和室外宏蜂窝系统的应用场景, 例如, 包含高架 的桥梁和道路的无线通信网络场景中, 或者, 包含宽阔的水面、 海面、 高地等 特定地形的无线通信网络场景中, 等等。 以克服相应的导频污染现象, 提高不 同覆盖区域下的通信质量。
以应用于包含室内覆盖系统和室外宏蜂窝系统的 CDMA无线通信网络中 为例, 相应的室内解决方案如图 2所示, 包括包含信标载频的基站系统(即室 内覆盖基站)和室内分布天线系统; 其中, 该室内覆盖基站的业务载频的工作 频点和室外宏蜂窝系统的业务载频的工作频点设置为不相同,以避免在室内覆 盖系统和室外宏蜂窝系统间产生同频干扰、导频污染等问题; 室内覆盖基站的 业务载频上同时包含有 CDMA公共信道和业务信道,用于吸收室内的话务量, 为处于室内覆盖区域的移动终端提供接入服务;该基站包括的一个或者多个信 标载频至少具有相应的 CDMA前向公共信道, 并且信标载频的工作频点和室 外宏蜂窝系统的工作频点相同, 该信标载频用于使处于室内的 CDMA移动终 端能够可靠地驻留到室内异频网(即室内覆盖系统)中, 同时也可以为移动终 端从室外宏蜂窝系统到室内覆盖系统的切换提供指引,即对于进入室内覆盖区 域的移动终端,通过包含信标载频的基站, 可以将其平滑指引到室内覆盖区域 的异频工作频点上, 以规避室外覆盖区域的同频干扰问题。
本发明实施例既可以适用于 CDMA IX系统, 也可以适应用于 EVDO系 统, 同时, 还可以应用于存在类似问题的其他移动通信系统中。
为便于对本发明实施例的理解,下面将结合附图对本发明实施例的具体实 现方式进行详细的描述。
实施例一
在该实施例一中, 如图 3所示, 相应的室外宏蜂窝系统(即相邻无线通信 系统 )具有两个工作频点, 分别为 F1频点和 F2频点; 相应的 CDMA室内覆 盖系统包括包含有两个信标载频的基站系统和室内分布天线系统; 其中, 该 CDMA室内覆盖系统中的基站系统的业务载频的工作频点为 F3频点, 其包含 的两个信标载频的工作频点分别为 F1频点和 F2频点,且该两个信标载频均具 有前向 CDMA公共信道, 并保持连续发射相应的前向公共信息消息。 同时, 信标载频的工作频点 F1频点、 信标载频的工作频点 F2频点和室内覆盖载波 F3 频点在各自公共信道下发给移动终端的系统消息中的信道列表字段均为仅 包括 F3频点,以便于处于室内的 CDMA移动终端能够根据系统消息中的信道 列表字段中的频点信息选择驻留到室内异频网的 F3频点上。
在该实施例一中, 移动终端在室内覆盖系统的呼叫处理过程包括: 处于室内覆盖系统的移动终端开机时,则优先捕获信标载频所在的基本频 点 F1频点,并从 F1频点的前向公共信道接收系统消息, 由于该系统消息的信 道列表字段中仅包括室内覆盖系统的业务载频的工作频点 F3频点, 因而移动 终端将根据系统消息中的信息及 CDMA移动通信标准中的 HASH (哈希) 算 法, 自动从 F1频点转移到室内覆盖业务载频的工作频点 F3频点进行驻留,从 而使得后续的通信过程中将会在室内覆盖系统的 F3频点上发起呼叫或者接收 寻呼。
例如, 在该实施例一中, 相应的系统消息可以但不限于包括: 同步信道消 息, 信道列表消息, 系统参数消息, 邻区列表消息, 等等。
在后续的呼叫处理过程中, 由于室内覆盖系统的 F3频点与室外宏蜂窝系 统的 F1频点和 F2频点不同,因而可以有效避免同频组网方式存在的同频干扰 问题, 进而可以显著提升室内的通信质量。
在该实施例一中, 移动终端在室内与室外间的切换处理过程包括: ( 1 )移动终端由室内到室外的切换过程
处于空闲状态的移动终端的切换过程包括:
预先将室外宏蜂窝系统的 F1频点和 F2频点的小区配置为室内基站对应 F3 频点的异频邻区, 这样便于使得在移动终端从室内移动到室外的过程中, 可以根据预先配置的室内基站的异频邻区信息进行相应的切换,以切换到室外 宏蜂窝系统的 F1和 F2频点,实现了移动终端从室内到室外的平滑的空闲切换 操作;
处于业务状态的移动终端切换过程包括:
预先将室外宏蜂窝系统的 F 1频点和 F2频点的小区配置为室内基站对应的 F3频点的异频邻区, 之后, 便可以通过手机辅助硬切换(MAHHO )方式实现 处于业务状态的移动终端从室内覆盖系统到室外宏蜂窝系统的平滑的业务态 切换操作。
( 2 )移动终端由室外到室内的切换过程
处于空闲状态的移动终端的切换过程包括:
预先将室内覆盖系统的信标载频的工作频点 F1频点配置为室外宏蜂窝系 统的工作频点 F1频点的同频邻区,将室内的信标载频的工作频点 F2频点配置 为室外宏蜂窝系统的工作频点 F2频点的同频邻区; 这样, 若移动终端先驻留 在室外宏蜂窝系统的 F1频点且向室内覆盖系统移动的过程中, 将首先空闲切 换到信标载频 F1频点上,并在室内覆盖系统的信标载频的工作频点 F1频点上 接收通过信标载频的工作频点 F1频点发送的只包含 F3频点信道列表的系统消 息, 之后, 将根据系统消息中的信息并釆用 HASH (哈希)算法自动转移到室 内覆盖系统的 F3频点上驻留; 同样, 若移动终端先驻留在室外宏蜂窝系统的 F2频点, 则首先空闲切换到信标载频 F2频点上, 并在室内覆盖系统的信标载 频的工作频点 F2频点上接收信标载频 F2频点的只包含 F3频点信道列表的系 统消息,之后,将根据 HASH算法自动转移到室内覆盖系统的 F3频点上驻留; 处于业务状态的移动终端切换过程包括:
预先将室内覆盖系统的信标载频的工作频点 F1频点配置为室外宏蜂窝系 统 F1频点的同频邻区,将室内覆盖系统的信标载频的工作频点 F2频点配置为 室外宏蜂窝系统的工作频点 F2频点的同频邻区; 这样, 若移动终端在室外宏 蜂窝系统的工作频点 F1频点处于业务通信状态 (即处于业务状态)且向室内 移动的过程中, 将在信标载频 F1频点的指引下, 硬切换到室内覆盖系统的 F3 载波 (即 F3频点)继续通信。切换到室内覆盖系统工作频点 F3频点后由于不 存在室外宏蜂窝系统的工作频点 F1频点和 F2频点的干扰,因而可以保证良好 的通信质量。
实施例二
在该实施例二中, 如图 4所示, 室外宏蜂窝系统包含两个工作频点, 分别 为 F1频点和 F2频点; CDMA室内覆盖系统包括包含有一个跳频信标载频的 基站系统和室内分布天线系统; 其中, 该室内覆盖基站的业务载频的工作频点 为 F3频点, 其包含的跳频信标载频的工作频点在 F1频点和 F2频点之间按照 预定的周期跳变, 相应的在一个跳变周期内, 信标载频通过工作频点 F1频点 和 F2频点至少应当各自向移动终端发射一个完整的前向 CDMA公共信道消 息, 以便移动终端能够利用该完整的前向 CDMA公共信道消息接入到室内覆 盖系统中, 同样, 在发送的消息中仅包含室内覆盖基站的工作频点 F3频点, 以便于处于室内的 CDMA移动终端能够驻留到室内异频网的工作频点 F3频点 上, 即通过 CDMA室内覆盖系统接入通信网络。
其中,相应的完整的前向 CDMA公共信道消息可以包括: 同步信道消息, 信道列表消息, 系统参数消息, 邻区列表消息, 等等。
进一步地, 参照图 5所示, 相应的跳频的过程可以包括:
步骤 501 , 获取跳频配置信息, 该跳频配置信息包括跳频范围包含的工作 频点, 以及包含的工作频点之间的跳变方式, 例如, 可以为跳频发射时间 TX ONDUR, ϋ频关断时间 TX— OFFDUR;
步骤 502, 判断当前的跳频工作状态为发射状态还是关断状态, 若是发射 状态, 则执行步骤 503至步骤 507 , 若为关断状态, 则执行步骤 508至 512; 步骤 503 , 统计累计跳频发射时间;
步骤 504、 505 , 判断统计的累计跳频发射时间是否大于跳频发射时间 TX ONDUR, 若是, 则执行步骤 506, 否则, 执行步骤 503;
步骤 506、 507 , 闭塞当前跳频所在工作频点的通道(即载波通道) 的发 射功率, 并设置工作状态为关断状态, 重新执行步骤 501。
步骤 508 , 统计累计跳频关断时间;
步骤 509、 510 , 判断统计的累计跳频关断时间是否大于跳频关断时间 TX OFFDUR, 若是, 则执行步骤 511 , 否则, 执行步骤 508; 步骤 511、 512 , 配置当前跳频所在工作频点 (即载波通道的频点)为跳 频范围包含的工作频点中的下一个跳频频点, 并设置工作状态为发射状态, 重 新执行步骤 501。
在该方案中,由于应用含跳频信标载频的基站替代含多个普通信标载频的 基站作为室内覆盖系统信号源,从而可以减少基站需要的载波数目,有效节省 了基站的实现成本。 而且, 当室外宏蜂窝系统扩容时, 如从 2 载波扩容到 3 载波时, 室内覆盖系统仅需要进行相应的数据设置(如通过相应的接口修改跳 频过程中的频点范围) 即可, 而无需修改硬件。
而且, 该实现方式可以有效利用基站的多载波特性实现, 以降低本发明实 施例的应用成本。
本发明实施例还提供了一种室内通信系统及基站, 其具体实现结构如图 6 所示, 其中, 相应的室内通信系统具体可以包括:
基站, 用于在室内覆盖系统的业务载频上分配公共信道和业务信道, 该业 务载频的工作频点与室外宏蜂窝系统的业务载频的工作频点不同; 以及, 用于 在室内覆盖系统的信标载频上分配公共信道,并通过该公共信道发送仅包含室 内覆盖系统业务载频的工作频点信息的系统消息,该信标载频的工作频点与室 外宏蜂窝系统的业务载频的工作频点相同;
室内分布式天线, 用于为所述基站接收及发送信息, 以便于实现基站与移 动终端之间的信息的交互。
下面将再结合图 6进一步描述基站的具体实现结构, 该基站具体可以包括 以下单元:
业务载频单元,用于在室内覆盖系统的业务载频上分配公共信道和业务信 道, 且所述业务载频的工作频点与室外宏蜂窝系统业务载频的工作频点不同; 由于基站可以包括基带子系统和中射频子系统, 因此, 该业务载频单元也可以 进一步划分为用于完成基带部分处理的业务载频基带单元及用于完成中射频 部分处理的业务载频中射频单元;
信标载频单元, 用于在室内覆盖系统的信标载频上分配公共信道, 并通过 该公共信道发送仅包含室内覆盖系统业务载频的工作频点信息的系统消息,且 所述信标载频的工作频点与室外宏蜂窝系统业务载频的工作频点相同;该信标 载频单元应用的信标载频的工作频点可以设置为固定使用所述室外宏蜂窝系 统的各个业务载频的工作频点, 或者, 也可以设置为轮询调度使用所述室外宏 蜂窝系统的各个业务载频的工作频点,即釆用跳频的方式确定相应的信标载频 的工作频点; 同样, 由于基站可以包括基带子系统和中射频子系统, 因此, 该 信标载频单元也可以进一步划分为用于完成基带部分处理的信标载频基带单 元及用于完成中射频部分处理的信标载频中射频单元。
其中, 若釆用跳频方式确定信标载频的工作频点, 则该基站还可以包括跳 频配置信息获取单元, 用于获取跳频配置信息, 并根据该跳频配置信息确定信 标载频单元应用的信标载频的工作频点, 其中, 所述跳频配置信息包括跳频范 围包含的工作频点和在包含的工作频点之间的跳变方式(如跳频周期信息或跳 频间隔时间信息等) , 等等。
在图 6所示的基站中, 还可以包括相应的电源子系统, 通过该电源子系统 为基站供电。
综上所述, 上述各本发明实施例提供的实现方案中, 釆用包含信标载频的 基站等无线通信设备提供信号源的无线通信系统 (如 CDMA 室内覆盖系统 等), 从而实现室内覆盖系统与室外宏蜂窝系统之间异频组网方式, 使得移动 终端能够顺利的驻留和平滑的切换到相应的无线通信系统中,有效解决室内覆 盖系统与室外宏蜂窝系统之间存在的同频干扰和导频污染问题,提供了无线通 信系统的通信质量。
即本发明实施例中通过含信标载频的基站作指引、应用异频承载业务的实 现方式,使得移动终端能够顺利的驻留和平滑的切换到室内覆盖系统中。而且, 本发明实施例的业务承载在异频载波上,使得室内业务可以完全不占用室外宏 蜂窝系统的无线资源, 从而可以显著提升网络的频谱利用率。
再者,本发明实施例与由直放站提供信号源的 CDMA室内覆盖系统相比, 可以有效提高网络质量及系统容量。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局 限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应该以权利要求的保护范围为准。

Claims

OP090431 WO 2009/117974 PCT/CN2009/071927 - 11 - 权 利 要 求
1、 一种无线通信的方法, 其特征在于, 预先设置室内覆盖系统业务载频 的工作频点与室外宏蜂窝系统业务载频的工作频点不同,所述室内覆盖系统信 标载频的工作频点与室外宏蜂窝系统业务载频的工作频点相同,并在所述室内 覆盖系统的信标载频上分配公共信道, 所述方法包括:
通过所述公共信道,在所述室内覆盖系统信标载频的工作频点发送仅包含 室内覆盖系统的业务载频的工作频点信息的系统消息,所述系统消息用于引导 移动终端迁移到所述室内覆盖业务载频的工作频点。
2、 根据权利要求 1所述的方法, 其特征在于, 所述预先设置室内覆盖系统 信标载频的工作频点与室外宏蜂窝系统业务载频的工作频点相同包括:
将所述室内覆盖系统的信标载频的工作频点固定设置为所述室外宏蜂窝 系统的业务载频的工作频点; 或者,
釆用跳频方式,将所述室内覆盖系统的信标载频的工作频点设置为轮流使 用所述室外宏蜂窝系统的业务载频的工作频点。
3、 根据权利要求 2所述的方法, 其特征在于, 当釆用所述跳频方式时, 在 发送所述系统消息之前, 所述方法还包括:
获取跳频配置信息, 并根据所述跳频配置信息确定信标载频的工作频点, 其中, 所述跳频配置信息包括: 跳频范围内包含的工作频点、 和在所述工作频 点之间兆变的方式。
4、 根据权利要求 1、 2或 3所述的方法, 其特征在于, 还包括:
将所述室内覆盖系统业务载频的工作频点的小区和室外宏蜂窝系统业务 载频的工作频点的小区设置为异频邻区;
将所述室内覆盖系统信标载频的工作频点的小区和室外宏蜂窝系统业务 载频的工作频点的小区设置为同频邻区。
5、 一种基站, 其特征在于, 包括:
业务载频单元,用于预先设置室内覆盖系统的业务载频的工作频点与室外 宏蜂窝系统业务载频的工作频点不同;
信标载频单元,用于预先设置信标载频的工作频点与室外宏蜂窝系统业务 载频的工作频点相同, 并在所述室内覆盖系统的信标载频上分配公共信道,通 OP090431
WO 2009/117974 PCT/CN2009/071927
- 12- 过所述公共信道在所述室内覆盖系统信标载频的工作频点发送仅包含室内覆 盖系统业务载频的工作频点信息的系统消息,所述系统消息用于引导移动终端 迁移到所述室内覆盖业务载频的工作频点。
6、 根据权利要求 5所述的基站, 其特征在于, 所述预先设置所述信标载频 的工作频点与室外宏蜂窝系统业务载频的工作频点相同包括:
将所述室内覆盖系统的信标载频的工作频点固定设置为所述室外宏蜂窝 系统的业务载频的工作频点; 或者,
釆用跳频方式,将所述室内覆盖系统的信标载频的工作频点设置为轮流使 用所述室外宏蜂窝系统的业务载频的工作频点。
7、 根据权利要求 6所述的基站, 其特征在于, 当釆用所述跳频方式时, 所 述基站还包括:
跳频配置信息获取单元, 用于获取跳频配置信息, 并根据所述跳频配置信 息确定信标载频单元应用的信标载频的工作频点, 其中, 所述跳频配置信息包 括: 跳频范围内包含的工作频点、 和在所述工作频点之间跳变的方式。
8、 一种室内通信系统, 其特征在于, 包括:
基站,用于预先设置室内覆盖系统业务载频的工作频点与室外宏蜂窝系统 业务载频的工作频点不同,所述室内覆盖系统信标载频的工作频点与室外宏蜂 窝系统业务载频的工作频点相同,并在所述室内覆盖系统的信标载频上分配公 共信道,通过所述公共信道,在所述室内覆盖系统信标载频的工作频点发送仅 包含室内覆盖系统的业务载频的工作频点信息的系统消息,所述系统消息用于 引导移动终端迁移到所述室内覆盖业务载频的工作频点;
室内分布式天线, 用于为所述基站接收及发送信息。
9、 根据权利要求 8所述的系统, 其特征在于, 所述基站预先设置室内覆盖 系统信标载频的工作频点与室外宏蜂窝系统业务载频的工作频点相同包括: 所述基站将所述室内覆盖系统的信标载频的工作频点固定设置为所述室 外宏蜂窝系统的业务载频的工作频点; 或者,
所述基站釆用跳频方式,将所述室内覆盖系统的信标载频的工作频点设置 为轮流使用所述室外宏蜂窝系统的业务载频的工作频点。
10、 一种无线通信系统间的切换方法, 其特征在于, 包括: OP090431
WO 2009/117974 PCT/CN2009/071927
- 13 - 移动终端从室外宏蜂窝系统移动到室内覆盖系统时,接收室内覆盖系统通 过信标载频的工作频点发送的系统消息,该系统消息中仅包含室内覆盖系统的 业务载频的工作频点信息,所述室内覆盖系统与室外宏蜂窝系统的业务载频的 工作频点不同,且所述室内覆盖系统信标载频的工作频点与室外宏蜂窝系统的 业务载频的工作频点相同;
移动终端根据所述系统消息中包含的室内覆盖系统的业务载频的工作频 点信息, 切换到所述室内覆盖系统的业务载频的工作频点上。
11、 根据权利要求 10所述的切换方法, 其特征在于, 所述接收系统消息 之前还包括:
所述移动终端从当前所在室外宏蜂窝系统业务载频的工作频点切换到当 前室内覆盖系统信标载频的工作频点上。
12、 根据权利要求 11所述的切换方法, 其特征在于, 所述当前室内覆盖 系统信标载频的工作频点包括:
预先配置的与所述当前所在室外宏蜂窝系统业务载频的工作频点一致的 工作频点; 或者,
按照跳频方式预先配置的当前跳频周期对应的室内覆盖系统信标载频的 工作频点。
13、 一种无线通信系统间的切换方法, 其特征在于, 包括:
移动终端从室内覆盖系统移动到室外宏蜂窝系统时 ,获取预先配置的异频 邻区信息, 所述异频邻区信息包括: 所述室内覆盖系统业务载频的工作频点的 小区和室外宏蜂窝系统业务载频的工作频点的小区互为异频邻区;
移动终端根据所述异频邻区信息从所述室内覆盖系统业务载频的工作频 点切换到所述室外宏蜂窝系统业务载频的工作频点。
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