WO2010124536A1 - Scanning method based on a multi-carrier system - Google Patents

Scanning method based on a multi-carrier system Download PDF

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Publication number
WO2010124536A1
WO2010124536A1 PCT/CN2010/070792 CN2010070792W WO2010124536A1 WO 2010124536 A1 WO2010124536 A1 WO 2010124536A1 CN 2010070792 W CN2010070792 W CN 2010070792W WO 2010124536 A1 WO2010124536 A1 WO 2010124536A1
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WO
WIPO (PCT)
Prior art keywords
base station
terminal
scan
carrier
scanning
Prior art date
Application number
PCT/CN2010/070792
Other languages
French (fr)
Chinese (zh)
Inventor
李楠
陈玉芹
吕开颖
Original Assignee
中兴通讯股份有限公司
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Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2010124536A1 publication Critical patent/WO2010124536A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Definitions

  • the present invention relates to the field of communications, and in particular, to a scanning method based on a multi-carrier system.
  • BACKGROUND OF THE INVENTION 802.16m systems are based on orthogonal frequency division multiple access (Orthogonal Frequency Division)
  • MAC Media Access Control
  • PHY Physical layer
  • the bandwidth of each channel may be different, such as channel 1 having a bandwidth of 5 MHz, channel 2 having a bandwidth of 10 MHz, and channel N having a bandwidth of 20 MHz, and The bandwidth of each channel may be a continuous frequency band or a discontinuous frequency band.
  • the 802.16m system may include one or more Fully configured carriers and one or more Partially configured carriers, where the fully configured carrier is used to carry the following control information.
  • the synchronization control information, the broadcast control information, the multicast control information, and the unicast control information may also be used to carry information and parameters related to multi-carrier and other carrier operations, and some of the configured carriers are used to carry all control channels supporting downlink transmission.
  • the fully configured carrier can serve as the primary carrier or secondary carrier of the terminal, and the partially configured carrier can only serve as the secondary carrier of the terminal.
  • each terminal corresponds to one primary carrier, and may correspond to one or more secondary carriers, or may not have a secondary carrier, where the primary carrier is used for the service of the terminal and the physical device that controls the operation of the terminal.
  • Layer control information and media access control layer control information, such as network access the secondary carrier is used for the transmission service allocated by the base station to the terminal through specific commands and rules, and the secondary carrier can also carry the control supporting the multi-carrier operation.
  • Signaling In the 802.16e system, as the channel fading or the carrier load increases, the terminal terminates the connection with the current serving base station and switches to other neighboring base stations to obtain a better quality of service (QoS). .
  • QoS quality of service
  • the terminal scans the neighboring base station to obtain its channel quality, so as to select a suitable target base station to perform handover.
  • the prior art provides a method for a terminal to scan a channel quality of a neighboring base station in an 802.16e system, and can perform association at the time of scanning, so that the terminal obtains and records ranging parameters and useful service information, and selects a target base station.
  • Provisioning conditions are provided for handover to the target base station.
  • the association is an optional initial ranging process, and the types of scanning may include: scanning (no association), association without base station cooperation, association of base station cooperation, and association of network cooperation.
  • a scanning method based on a multi-carrier system including: a serving base station sending a scan message to its terminal, where the scan message includes: one or more carrier information that the terminal needs to scan; Scan one or more carriers.
  • a carrier scanning method based on a multi-carrier system is provided, so that a terminal can perform scanning on multiple carriers of multiple base stations in a multi-carrier system, which is between the base station and the base station of the terminal.
  • Carrier switching provides a reasonable reference value.
  • the drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention.
  • 1 is a schematic structural diagram of a multi-carrier system according to the related art
  • FIG. 2 is a flowchart of a multi-carrier system-based scanning method according to an embodiment of the present invention
  • FIG. 3 is a flowchart according to a first embodiment of the present invention
  • FIG. 4 is a flowchart of multi-carrier scanning of a multi-channel terminal initiated by a base station according to Embodiment 2 of the present invention
  • FIG. 5 is a third embodiment of the present invention.
  • Flowchart of multi-carrier scanning of a single-channel terminal initiated by a terminal
  • 6 is a flow chart of multi-carrier scanning of a multi-channel terminal initiated by a terminal according to Embodiment 4 of the present invention.
  • Step S202 The serving base station sends a scan message to its terminal, where the scan message includes: Multiple carrier information;
  • Step S204 the terminal scans the one or more carriers.
  • the terminal's monthly base station sends a scan message to the terminal, and after receiving the scan message, the terminal scans one or more carriers that need to be scanned, which solves the problem that the multi-carrier system cannot be scanned in the related art.
  • the problem is that the terminal can complete scanning on multiple carriers of multiple base stations in a multi-carrier system, and provides a reasonable reference value for intra-base station and inter-base station carrier switching of the terminal.
  • the scan message only needs to include one or more carrier information that the terminal needs to scan.
  • the terminal can scan one or more carriers by using its single RF channel.
  • the scanning message further includes the radio channel information used by the terminal for scanning and one or more carrier information that the terminal needs to scan.
  • the terminal scans one or more carriers using the RF channel indicated in the RF channel information.
  • the radio channel information used by the terminal in the scan message for scanning may be the carrier identification information corresponding to the radio channel used by the terminal for scanning, that is, in actual implementation, the monthly base station and the terminal save the current terminal.
  • the terminal may scan one or more carriers by using the radio frequency channel corresponding to the carrier identification information.
  • the carrier identification information may be a carrier physical number or a carrier logical number.
  • the one or more carriers that the terminal needs to scan include at least one of the following: all fully configured carriers supported by the terminal under the monthly base station and not currently used by the terminal, and all of the partially configured carriers Part or all of the carrier, all fully configured carriers of the neighboring base station, and some or all of the partially configured carriers, and the terminal knows some or all of the base stations identified by the base station.
  • the service base station sends a scan message to the terminal through the primary carrier of the terminal.
  • the scan message may further include at least one of the following: a scan start time, a scan interval, a scan result report rule, a report value type to be reported, and a scan type.
  • the report value type may include at least one of the following: a carrier interference noise ratio, a received signal strength indication, a relative delay, and a round trip delay.
  • the terminal can scan according to the above parameters and report the scan result.
  • the radio frequency channel used by the terminal for scanning is the same channel as the radio frequency channel used for communication between the terminal and the serving base station (that is, the channel is used for normal communication between the terminal and the monthly base station, Also used for scanning of the terminal;)
  • the scanning message also includes non-scanning intervals and repetition times.
  • the terminal scans each carrier that needs to be scanned in the scan interval through the radio frequency channel, and continues communication with the serving base station at the non-scan interval, and ends the scan when the scan duration reaches.
  • the serving base station needs to notify the terminal of the scan type corresponding to the carrier that needs to be scanned among the base stations that need to be scanned.
  • the scan type indicated in the scan message may include at least one of the following: scan only, association without base station cooperation, association of base station cooperation, association of network cooperation.
  • the scan types corresponding to all the carriers that need to be scanned are the same or different, that is, all carriers on the base station may use the same scan type, or may be different.
  • the carrier uses different scan types (for example, one part of the carrier scan type 1 and the other part scan type 2).
  • the scan message may further include the association information, where the association information may specifically include: the association level, the time when the association is performed, and the execution association Dedicated ranging code and dedicated ranging resource information used.
  • the terminal may send a dedicated measurement macro code to the base station (ie, the associated base station) to which the carrier associated with the terminal belongs according to the dedicated ranging resource of the to-be-scanned carrier according to the associated information;
  • the base station may send the ranging result of the terminal to the serving base station by using the bone network, where the ranging result includes: the time adjustment information, the frequency adjustment information, and the frequency adjustment information on the carrier that the terminal performs the network coordination association, Power adjustment information, ranging status, The service that the carrier can provide, etc.
  • the serving base station can send the ranging result to the terminal.
  • the one or more carrier information that the terminal needs to scan may include: a base station bitmap and/or base station identification information that the terminal that the serving base station needs to scan in the scan message, and the terminal scans one or more carriers by using the radio frequency channel.
  • the method includes: the terminal scanning part or all of the base stations corresponding to the base station bitmap and/or the base station identification information; and/or, the base station bitmap and/or the base station identifier that the terminal carried in the scan message needs to scan.
  • the information, and the identification information of the carrier that needs to be scanned under the base station bitmap and/or the base station identifier the terminal scanning the one or more carriers by using the radio frequency channel, including: the terminal to the base station bitmap and/or the base station identification information
  • the carrier corresponding to the carrier identification information in the corresponding base station is scanned.
  • the carrier identification information may be a carrier physical number or a carrier logical number.
  • the carrier configuration information of the neighboring cell base station is obtained, where the neighboring cell base station is: a set of base stations adjacent to the serving base station, and the carrier configuration information includes: physical frequency point information and carrier identifier of one or more available carriers in the neighboring cell base station Information, configuration information for each available carrier.
  • the scanning may be initiated by the base station or initiated by the terminal, and the two different initiation modes are respectively described below:
  • the scanning initiated by the terminal sends a scanning request message to the monthly base station, and the scanning base station sends a scanning message to the terminal, and the scanning message can be regarded as a response message of the scanning request message.
  • the base station initiates scanning, and the base station actively sends a scan message to the terminal, and the terminal scans after receiving the scan message.
  • the terminal may send the scan request message to the monthly base station after the discovery of the predetermined trigger condition is met, or the monthly base station may send the scan message to the terminal after the discovery of the predetermined trigger condition is met.
  • the predetermined triggering condition includes one of the following: a channel quality measurement value of a carrier currently used by the terminal is less than or equal to a predetermined channel quality measurement threshold, and the terminal currently makes The load value of the used carrier is greater than or equal to the predetermined load value threshold.
  • the predetermined trigger condition is the same as or different from the predetermined trigger conditions of the carriers of the other base stations (which may be the base stations in the neighboring cell list of the monthly base station); wherein the scanning belongs to the serving base station
  • the predetermined trigger condition of the carrier and the predetermined trigger condition for scanning the carriers belonging to the other base stations are the same as each other: the predetermined channel quality measurement threshold when scanning the serving base station is equal to the predetermined channel quality measurement threshold when scanning other base stations, or the scanning service
  • the predetermined load value threshold at the time of the base station is equal to the predetermined load value threshold when scanning other base stations.
  • the predetermined trigger condition is set to a predetermined channel quality measurement threshold A, and/or a predetermined load threshold C, and the predetermined trigger condition of the carrier under the other base station may be triggered by the carrier of the serving base station.
  • the conditions are the same, that is, if the predetermined trigger condition of the other base station is that the predetermined channel quality measurement threshold is A, and/or the predetermined load value threshold B, the trigger condition of the other base station is considered to be the same as the trigger condition of the serving base station;
  • the predetermined channel quality measurement threshold is not A in the predetermined trigger condition of the other base station, and/or the predetermined load value threshold is not B, and the predetermined trigger conditions of the other base station and the serving base station are different.
  • the terminal includes at least one of the following information in the scan request message sent by the terminal to the serving base station: radio channel information recommended by the terminal for scanning, one or more carrier identification information recommended by the terminal for scanning, and recommended scanning by the terminal. Interval, non-scanning interval recommended by the terminal, number of repetitions recommended by the terminal, and type of scanning recommended by the terminal.
  • the terminal scanning the one or more carriers by using the radio frequency channel, including: part or all of the base station corresponding to the base station bitmap and/or the base station identification information by the terminal
  • the carrier performs scanning; and/or, for the base station bitmap and/or the base station identification information of the terminal recommendation scan, and the carrier identification information that needs to be scanned under the base station corresponding to the base station bitmap and/or the base station identification information, the terminal uses the radio frequency channel.
  • Scanning the one or more carriers includes: the terminal scans the carrier corresponding to the carrier identification information under the base station corresponding to the base station bitmap and/or the base station identification information.
  • the carrier identification information may be a carrier physical number or a carrier logical number.
  • the scan types of all recommended scan carriers on the base station requested by the terminal are the same or different from each other.
  • the terminal may request scanning of a part of the carrier in the base station by scanning mode 1 at the base station. Another part of the carrier is scanned by scanning mode 2. It should be noted that, regardless of the mode 1 or the mode 2, the relevant parameters required by the terminal to perform scanning are determined by the serving base station, that is, the serving base station may not use the parameters carried in the scan request message sent by the terminal. .
  • the terminal may send the scanning result to the serving base station by using the primary carrier of the terminal according to the scanning result, wherein the scanning result includes: a reporting mode, a report value type, and a terminal scanning the one or more carriers.
  • the measurement result; the serving base station selects the target carrier for the terminal according to the scan result.
  • Table 1 is an example of a scan request message according to the present invention.
  • a scan type may be set for each carrier of the neighboring base station that needs to be scanned, and an unrelated scan may be used for the carrier of the serving base station that needs to be scanned. (That is, the scan type of the carrier that needs to be scanned for the serving base station is different from the scan type of the carrier that the neighboring base station needs to scan, and different carriers in one neighboring base station may correspond to different scan types).
  • the radio frequency channel used for scanning by the terminal is the same channel as the radio frequency channel used for communication between the terminal and the serving base station, the scanning request message, the non-scanning interval, and the repetition number need to be set in the scan request message.
  • the scanning duration is the product of the sum of the scanning interval and the non-scanning interval and the number of repetitions; in the case where the RF channel used for scanning by the terminal is not the same channel as the RF channel used for communication between the terminal and the serving base station, the scan request message may not be set.
  • Non-scan interval indication 1 0 No non-scan interval and heavy Multiple times
  • Scan RF channel change indication 1 Is the RF channel used for scanning the current RF channel?
  • the number of recommended base stations to be scanned 8 The value of 0 indicates that the service needs to be scanned.
  • the base station bitmap is in the bit map:
  • Table 2 is another example of a scan request message according to the present invention.
  • all carriers that need to be scanned are set to the same scan type for the neighboring base station, and the carrier that needs to be scanned for the serving base station is used without association.
  • Scanning that is, setting the same scanning type for carriers in all neighboring base stations that need to be scanned, the scanning type set by the carrier that needs to be scanned by the serving base station is the same, and the scanning type and the neighboring area set for the carrier of the serving base station
  • the scan type of the base station's carrier settings may be different).
  • Non-scan interval indication 1 0 No non-scan interval and repetition are required. Number of times
  • Scan RF channel change indication 1 Is the RF channel used for scanning the current RF channel?
  • the base station bitmap is in the bit map:
  • Table 3 is an example of a scan message according to the present invention.
  • the same scanning type is used for the carrier of the neighboring base station that needs to be scanned, and the carrier that needs to be scanned by the serving base station is used without any association.
  • Scanning that is, the same scanning type is set for the carriers in all neighboring base stations that need to be scanned, and the scanning type of the carrier that needs to be scanned by the serving base station is the same, and the scanning mode of the carrier set for the serving base station and the neighboring base station are set.
  • the scan type of the carrier setting may not be the same).
  • Non-scan interval indication 1 0 No non-scan interval and number of repetitions are required.
  • Scan RF channel change indication 1 Is the RF channel used for scanning the current channel?
  • Event triggers 4 ⁇ ⁇ ⁇ scan once 4 ⁇ Reporting cycle
  • Bit 0 base station carrier interference noise ratio
  • Bit 3 Round trip delay, remaining bits reserved
  • Table 4 is another example of a scan message in accordance with the present invention.
  • unassociated scans are applied to both the serving base station and the neighbor base station carriers, and the same report value type is used for all base stations.
  • Table 4 is another example of a scan message in accordance with the present invention.
  • unassociated scans are applied to both the serving base station and the neighbor base station carriers, and the same report value type is used for all base stations.
  • Non-scan interval indication 1 0 No non-scan interval and repetition are required. Number of times
  • Scan RF channel change indication 1 Is the RF channel used for scanning the current channel?
  • Bit 0 base station carrier interference noise ratio
  • Bit 3 Round trip delay, remaining bits reserved
  • Table 5 is a list corresponding to the association report sent by the serving base station to the terminal according to the present invention. Table 5
  • Table 6 is an embodiment corresponding to the scan report message sent by the terminal to the serving base station according to the present invention. After the scan is completed, the terminal reports the scan result to the serving base station according to the scan result reporting rule, and the result is used as the serving base station when selecting the target carrier. One of the reference values, in this embodiment, the measured carrier of each measured base station is reported. Table 6
  • FIG. 3 is a flowchart of multi-carrier scanning of a single-channel terminal initiated by a monthly service base station according to Embodiment 1 of the present invention. As shown in FIG. 3, the method includes the following steps: Step 1: The terminal acquires multi-carrier configuration information of the serving base station from the system information, and acquires multi-carrier configuration information of the neighboring base station from the neighboring area broadcast message.
  • Step 2 The serving base station sends a scan message to the terminal, where the scan message carries at least one of the following parameters: carrier information to be scanned, scan start time, scan interval, non-scan interval, number of repetitions, reporting rule of scan result, The type of report value that needs to be reported, the type of scan, and the associated information at the time of scanning.
  • the carrier that the terminal needs to scan includes at least one of the following: all fully configured carriers supported by the terminal and supported by the terminal, and some or all carriers of all the partially configured carriers, and all configured carriers of the neighboring base stations And part or all of the carriers in the partial configuration carrier, and the terminal knows some or all of the base stations in the base station identifier.
  • the carrier information that needs to be scanned may be a carrier number and/or carrier physical frequency point information.
  • Step 3 When the scan start time arrives, the terminal scans each carrier in the carrier list to be scanned in the scan interval by using the single radio frequency channel. Specifically, the terminal compares the carrier according to the information in the report value type that needs to be reported. Scanning is performed; and communication with the serving base station is continued at the non-scanning interval, and when the scanning duration is reached, the scanning is ended.
  • Step 4 The terminal reports the scan result to the base station according to the predetermined reporting rule.
  • Step 4 is a flowchart of multi-carrier scanning of a multi-channel terminal initiated by a monthly base station according to Embodiment 2 of the present invention, which includes the following steps: Step 1: The terminal acquires multi-carrier configuration information of the serving base station from system information, Obtaining multi-carrier configuration information of the neighboring base station from the neighboring area broadcast message. Step 2: When the serving base station initiates scanning, the serving base station sends a scan message, and the message carries at least one of the following information: radio channel information used by the terminal for scanning, carrier information to be scanned, scan start time, scan interval, scan result Escalation rules, types of report values that need to be reported, scan type, and associated information when scanning.
  • Step 1 The terminal acquires multi-carrier configuration information of the serving base station from system information, Obtaining multi-carrier configuration information of the neighboring base station from the neighboring area broadcast message.
  • Step 2 When the serving base station initiates scanning, the serving base station sends a scan message, and the message carries at least
  • Step 3 At a predetermined scan start time, if the radio frequency channel used by the terminal for scanning is not the same channel as the radio frequency channel used for communication between the terminal and the serving base station, the terminal scans the predetermined carrier by using one channel in the scan interval, and The connection to the serving base station is maintained on the other channel. When the scanning duration reaches a predetermined value, the scanning is ended.
  • Step 4 The terminal reports the scan result to the base station according to the predetermined reporting rule. Through the above processing, carrier scanning of the multi-channel terminal carrier to the base station and the neighboring base station is realized.
  • FIG. 5 is a flowchart of multi-carrier scanning of a single-channel terminal initiated by a terminal according to Embodiment 3 of the present invention, which includes the following steps: Step 1: The terminal acquires multi-carrier of the serving base station from the system information.
  • the configuration information is used to obtain multi-carrier configuration information of the neighboring base station from the neighboring area broadcast message.
  • Step 2 The terminal sends a scan request message when the terminal initiates the scan, and carries the parameters such as the recommended scan carrier information, the scan start time, the scan interval, the non-scan interval, and the number of repetitions.
  • Step 3 After receiving the scan request message of the terminal, the monthly service base station sends a scan message to the terminal, in addition to setting the scan parameters requested by the terminal, and setting the report of the scan result and the report to be reported in the response message.
  • Step 4 At a predetermined scan start time, the terminal scans the predetermined carrier during the scan interval, and continues communication with the serving base station at the non-scan interval, when scanning The duration reaches the predetermined value and the scan ends.
  • Step 5 The terminal reports the scan result to the base station according to the predetermined reporting rule.
  • Step 6 is a flowchart of multi-carrier scanning of a multi-channel terminal initiated by a terminal according to Embodiment 4 of the present invention, which includes the following steps: Step 1: The terminal acquires multi-carrier configuration information of the serving base station from the system information, and acquires multi-carrier configuration information of the neighboring base station from the neighboring area broadcast message. Step 2: The terminal sends a scan request message when the terminal initiates the scan, and carries the parameters of the radio channel information recommended by the terminal for scanning, the need to scan the carrier information, the scan start time, the scan interval, and the like.
  • Step 3 After receiving the scan request message of the terminal, the monthly service base station sends a scan message to the terminal, in addition to setting the scan parameters requested by the terminal, and setting the report of the scan result and the report to be reported in the response message. Value type, scan type, association information during scanning, etc.
  • Step 4 At a predetermined scan start time, if the RF channel used by the terminal for scanning is not the same channel as the RF channel used for communication between the terminal and the serving base station, the terminal is at The predetermined carrier is scanned with one channel during the scanning interval, and the communication with the serving base station is maintained on the other channel. When the scanning duration reaches a predetermined value, the scanning is ended. If the radio channel used by the terminal for scanning is the same channel as the radio channel used for communication between the terminal and the serving base station, the scanning operation on the channel is the same as that in the third embodiment, and is not mentioned.
  • Step 5 The terminal reports the scan result to the base station according to the predetermined reporting rule.
  • the multi-carrier system-based scanning method of the present invention enables the terminal to perform scanning on multiple carriers of multiple base stations in a multi-carrier system, which is the basis of the terminal. Carrier switching between the station and the base station provides a reasonable reference value.

Abstract

A scanning method based on a multi-carrier system is provided by the present invention, wherein the method includes that a serving base station (BS) transmits a scanning message to its terminal, wherein the scanning message includes the information of one or more carriers which the terminal needs to scan (S202), the terminal scans the one or more carriers (S204) With the assistance of the technical schemes of the present invention, a carrier scanning method based on a multi-carrier system is provided to enable a terminal to perform scanning over multiple carriers of multiple BSs in the multi-carrier system, thus providing reasonable reference values for intra-BS and inter-BS carrier handovers of the terminal.

Description

基于多载波系统的扫描方法 技术领域 本发明涉及通信领域， 尤其涉及一种基于多载波系统的扫描方法。 背景技术 802.16m系统是基于正交频分多址接入 ( Orthogonal Frequency Division The present invention relates to the field of communications, and in particular, to a scanning method based on a multi-carrier system. BACKGROUND OF THE INVENTION 802.16m systems are based on orthogonal frequency division multiple access (Orthogonal Frequency Division)
Multiplex Access, 简称为 OFDMA )技术的多载波系统， 且为 802.16e系统 的演进系统。 图 1是多载波系统的协议架构示意图， 如图 1所示， 单一的媒 体接入控制实体（ Media Access Control, 简称为 MAC )可以控制包括多个信 道的物理层 （Physical, 简称为 PHY )。 例如， PHY中包括信道 1、 信道 2... 信道 N, 并且， 每个信道的带宽可以不同， 如信道 1的带宽为 5MHz、 信道 2的带宽为 10MHz, 信道 N的带宽为 20MHz, 并且， 每个信道的带宽可以 为连续的频带， 也可以为不连续的频带。 并且， 802.16m系统中可以包括一个或多个全配置载波（ Fully configured carrier ) 和一个或多个用于下行传输的部分配置载波 （Partially configured carrier ), 其中， 全配置载波用于承载以下控制信息： 同步控制信息、 广播控 制信息、 多播控制信息和单播控制信息， 还可以用于承载涉及多载波和其他 载波操作的信息和参数， 部分配置载波用于承载支持下行传输的所有控制信 道。 全配置载波可以作为终端的主载波或者辅载波， 部分配置载波仅可以作 为终端的辅载波。 在一个小区中， 每个终端对应于一个主载波， 并且可以对 应于一个或多个辅载波， 也可以没有辅载波， 其中， 主载波用于^载终端的 业务、以及承载控制终端操作的物理层控制信息和媒体接入控制层控制信息， 例如网络接入， 辅载波用于 7 载基站通过特定的命令和规则为终端分配的传 输业务， 且辅载波上也可以承载支持多载波操作的控制信令。 在 802.16e系统中， 随着信道的衰落或载波负载的增加， 终端会终止与 当前服务基站的连接，切换到其他邻区基站，以获得更好的服务质量（Quality of Service, 简称为 QoS )。 在进行切换之前， 终端会对邻区基站进行扫描， 获得其信道质量， 以选择合适的目标基站进行切换。 目前， 现有技术提供了 802.16e系统中终端对邻区基站的信道质量进行扫描的方法，并可以在扫描时 进行关联，使终端获得并记录测距参数和有用的业务信息， 为选择目标基站、 向目标基站切换提供条件。 在扫描过程中， 关联为可选的初始测距过程， 扫 描的类型可以包括： 扫描（无关联）、 无基站协作的关联、 基站协作的关联和 网络协作的关联。 但是， 在现有的技术方案中对于多载波系统的扫描方法， 并没有给出具 体的解决方案。 发明内容 考虑到相关技术中无法对多载波系统进行扫描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基于多载波系统的扫描方法， 以至少解 决上述问题。 才艮据本发明的一个方面， 提供一种基于多载波系统的扫描方法， 包括： 服务基站向其终端发送扫描消息， 其中， 扫描消息中包括： 终端需要扫描的 一个或多个载波信息； 终端对一个或多个载波进行扫描。 通过本发明的上述至少一个技术方案，提供了基于多载波系统的载波扫 描方法，使得终端能够在多载波系统中完成在多个基站的多个载波上的扫描， 为终端的基站内和基站间载波切换提供了合理的参考值。 附图说明 附图用来提供对本发明的进一步理解， 并且构成说明书的一部分， 与本 发明的实施例一起用于解释本发明， 并不构成对本发明的限制。 在附图中： 图 1是根据相关技术的多载波系统的构架示意图； 图 2是 居本发明实施例的基于多载波系统的扫描方法的流程图； 图 3 是根据本发明实施例一的由基站发起的单通道终端的多载波扫描 的流程图； 图 4 是 居本发明实施例二的由基站发起的多通道终端的多载波扫描 的流程图； 图 5 是才艮据本发明实施例三的由终端发起的单通道终端的多载波扫描 的流程图； 图 6 是才艮据本发明实施例四的由终端发起的多通道终端的多载波扫描 的流程图。 具体实施方式 下面将结合附图详细描述本发明。 图 2是 居本发明实施例的基于多载波系统的扫描方法的流程图，包括 以下步 4聚： 步骤 S202, 服务基站向其终端发送扫描消息， 其中， 扫描消息包括： 终端需要扫描的一个或多个载波信息； 步骤 S204, 终端对上述一个或多个载波进行扫描。 该实施例中， 终端的月艮务基站发送扫描消息给终端， 终端接收到该扫描 消息后对所需要扫描的一个或多个载波进行扫描， 解决了相关技术中无法对 多载波系统进行扫描的问题， 从而使得终端能够在多载波系统中完成在多个 基站的多个载波上的扫描， 为终端的基站内和基站间载波切换提供了合理的 参考值。 其中， 当终端为单通道终端时， 扫描消息中只需包括终端需要扫描的一 个或多个载波信息， 终端接收到扫描消息后即可利用其单射频通道对一个或 多个载波进行扫描。 当终端为多通道终端时 ,上述扫描消息中还需包括终端用于进行扫描的 射频通道信息和终端需要扫描的一个或多个载波信息。 终端利用射频通道信 息中所指示的射频通道对一个或多个载波进行扫描。 在实际实施时， 扫描消 息中的终端用于进行扫描的射频通道信息可以是终端用于进行扫描的射频通 道所对应的载波标识信息， 即在实际实施时， 月艮务基站和终端保存终端当前 工作的射频通道与该射频通道当前工作的载波标识信息的映射关系。 终端接 收到扫描消息后即可利用上述载波标识信息所对应的射频通道对一个或多个 载波进行扫描。 其中 ,上述载波标识信息可以是载波物理编号，也可以是载波逻辑编号。 所述终端需要扫描的一个或多个载波包括以下情况至少之一：月艮务基站 下终端支持的且终端当前未使用的所有全配置载波和所有部分配置载波中的 部分或全部载波、 邻区基站的所有全配置载波和部分配置载波中的部分或全 部载波、 终端获知基站标识的基站中的部分或全部载波。 优选地， 艮务基站通过终端的主载波将扫描消息发送给该终端。 优选地， 扫描消息中还可以进一步包括以下至少之一： 扫描开始时间、 扫描间隔、 扫描结果上报规则、 需要上报的报告值类型、 扫描类型。 其中， 报告值类型可以包括以下至少之一： 载波千扰噪声比、 接收信号强度指示、 相对延迟、 往返时延。 这样， 终端可以根据上述参数进行扫描以及上报扫描 结果。 另外，在终端用于进行扫描的射频通道与终端和服务基站通信所使用的 射频通道为同一通道的情况下 （也就是说， 该通道既用于终端与月艮务基站之 间的正常通信，也用于终端的扫描；)，扫描消息还包括非扫描间隔和重复次数。 这样， 上述扫描开始时间到达时， 终端通过上述射频通道在扫描间隔内对需 要扫描的每个载波进行扫描，并且在上述非扫描间隔继续和服务基站的通信， 当扫描时长达到时结束扫描。 对于终端需要扫描的每个基站，服务基站需要将这些需要扫描的基站中 的需要扫描的载波所对应的扫描类型通知终端。 其中， 扫描消息中所指示的 扫描类型可以包括以下至少之一： 仅扫描、 无基站协作的关联、 基站协作的 关联、 网络协作的关联。 并且， 对于终端需要扫描的每个基站， 其上所有需 要扫描的载波所对应的扫描类型相同或不同， 也就是说， 该基站上所有的载 波可以釆用同一种扫描类型， 也可以是不同的载波釆用不同的扫描类型 （例 如， 一部分载波釆用扫描类型 1 , 另一部分载波釆用扫描类型 2 )。 另外，如果扫描类型为无基站协作的关联或基站协作的关联或网络协作 的关联， 则扫描消息中还可以包括关联信息， 其中， 关联信息具体可以包括： 关联级别、 执行关联的时刻、 执行关联使用的专用测距码和专用测距资源信 息。 此时， 终端可以根据关联信息， 在上述执行关联的时刻， 在待扫描载波 的专用测距资源上向与该终端进行关联的载波所属的基站 （即关联基站）发 送专用测 巨码； 当扫描类型为网络协作的关联时， 上述基站可以通过骨千网 向服务基站发送终端的测距结果， 其中， 测距结果包括： 终端执行了网络协 调关联的载波上的时间调整信息、 频率调整信息、 功率调整信息、 测距状态、 载波能够提供的服务等； 最后， 服务基站可以将测距结果发送给终端。 另外， 终端需要扫描的一个或多个载波信息可以包括： 服务基站在扫描 消息中携带的终端需要扫描的基站比特图和 /或基站标识信息， 则终端利用射 频通道对一个或多个载波进行扫描包括： 终端对基站比特图和 /或基站标识信 息对应的基站的部分或全部载波进行扫描； 和 /或， 月艮务基站在扫描消息中携 带的终端需要扫描的基站比特图和 /或基站标识信息、 以及该基站比特图和 / 或基站标识对应的基站下需要扫描的载波的标识信息， 则终端利用射频通道 对一个或多个载波进行扫描包括： 终端对基站比特图和 /或基站标识信息对应 的基站下的上述载波标识信息对应的载波进行扫描。 其中，上述载波标识信息可以是载波物理编号，也可以是载波逻辑编号。 在终端的服务基站向终端发送扫描消息之前，终端获取服务基站和邻区 基站的载波的配置信息， 具体过程如下： 终端通过服务基站发送的广播信息 获取月艮务基站的载波配置信息， 包括月艮务基站中的一个或多个可用载波的物 理频点信息和 /或载波标识信息、 每个可用载波的配置信息； 终端获取艮务基 站分配给终端的载波集合信息； 终端通过邻区广播信息获取邻区基站的载波 配置信息， 其中， 邻区基站是指： 与服务基站相邻的基站集合， 载波配置信 息包括：邻区基站中的一个或多个可用载波的物理频点信息和载波标识信息、 每个可用载波的配置信息。 在本发明实施例中， 扫描可以由基站发起， 也可以由终端发起， 下面将 对这两种不同的发起方式分别进行描述： Multiplex system of Multiplex Access (OFDMA) technology, and an evolution system of 802.16e system. 1 is a schematic diagram of a protocol architecture of a multi-carrier system. As shown in FIG. 1, a single Media Access Control (MAC) can control a physical layer (Physical, hereinafter referred to as PHY) including multiple channels. For example, the PHY includes channel 1, channel 2, ..., channel N, and the bandwidth of each channel may be different, such as channel 1 having a bandwidth of 5 MHz, channel 2 having a bandwidth of 10 MHz, and channel N having a bandwidth of 20 MHz, and The bandwidth of each channel may be a continuous frequency band or a discontinuous frequency band. In addition, the 802.16m system may include one or more Fully configured carriers and one or more Partially configured carriers, where the fully configured carrier is used to carry the following control information. The synchronization control information, the broadcast control information, the multicast control information, and the unicast control information may also be used to carry information and parameters related to multi-carrier and other carrier operations, and some of the configured carriers are used to carry all control channels supporting downlink transmission. The fully configured carrier can serve as the primary carrier or secondary carrier of the terminal, and the partially configured carrier can only serve as the secondary carrier of the terminal. In a cell, each terminal corresponds to one primary carrier, and may correspond to one or more secondary carriers, or may not have a secondary carrier, where the primary carrier is used for the service of the terminal and the physical device that controls the operation of the terminal. Layer control information and media access control layer control information, such as network access, the secondary carrier is used for the transmission service allocated by the base station to the terminal through specific commands and rules, and the secondary carrier can also carry the control supporting the multi-carrier operation. Signaling. In the 802.16e system, as the channel fading or the carrier load increases, the terminal terminates the connection with the current serving base station and switches to other neighboring base stations to obtain a better quality of service (QoS). . Before the handover is performed, the terminal scans the neighboring base station to obtain its channel quality, so as to select a suitable target base station to perform handover. At present, the prior art provides a method for a terminal to scan a channel quality of a neighboring base station in an 802.16e system, and can perform association at the time of scanning, so that the terminal obtains and records ranging parameters and useful service information, and selects a target base station. , Provisioning conditions are provided for handover to the target base station. During the scanning process, the association is an optional initial ranging process, and the types of scanning may include: scanning (no association), association without base station cooperation, association of base station cooperation, and association of network cooperation. However, in the prior art solution, a specific solution is not given for the scanning method of the multi-carrier system. SUMMARY OF THE INVENTION The present invention has been made in view of the problem that the multi-carrier system cannot be scanned in the related art. To this end, it is a primary object of the present invention to provide a scanning method based on a multi-carrier system to at least solve the above problems. According to an aspect of the present invention, a scanning method based on a multi-carrier system is provided, including: a serving base station sending a scan message to its terminal, where the scan message includes: one or more carrier information that the terminal needs to scan; Scan one or more carriers. With the above at least one technical solution of the present invention, a carrier scanning method based on a multi-carrier system is provided, so that a terminal can perform scanning on multiple carriers of multiple base stations in a multi-carrier system, which is between the base station and the base station of the terminal. Carrier switching provides a reasonable reference value. The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention. 1 is a schematic structural diagram of a multi-carrier system according to the related art; FIG. 2 is a flowchart of a multi-carrier system-based scanning method according to an embodiment of the present invention; FIG. 3 is a flowchart according to a first embodiment of the present invention; A flowchart of multi-carrier scanning of a single-channel terminal initiated by a base station; FIG. 4 is a flowchart of multi-carrier scanning of a multi-channel terminal initiated by a base station according to Embodiment 2 of the present invention; FIG. 5 is a third embodiment of the present invention. Flowchart of multi-carrier scanning of a single-channel terminal initiated by a terminal; 6 is a flow chart of multi-carrier scanning of a multi-channel terminal initiated by a terminal according to Embodiment 4 of the present invention. DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the accompanying drawings. 2 is a flowchart of a multi-carrier system-based scanning method according to an embodiment of the present invention, including the following steps: Step S202: The serving base station sends a scan message to its terminal, where the scan message includes: Multiple carrier information; Step S204, the terminal scans the one or more carriers. In this embodiment, the terminal's monthly base station sends a scan message to the terminal, and after receiving the scan message, the terminal scans one or more carriers that need to be scanned, which solves the problem that the multi-carrier system cannot be scanned in the related art. The problem is that the terminal can complete scanning on multiple carriers of multiple base stations in a multi-carrier system, and provides a reasonable reference value for intra-base station and inter-base station carrier switching of the terminal. When the terminal is a single-channel terminal, the scan message only needs to include one or more carrier information that the terminal needs to scan. After receiving the scan message, the terminal can scan one or more carriers by using its single RF channel. When the terminal is a multi-channel terminal, the scanning message further includes the radio channel information used by the terminal for scanning and one or more carrier information that the terminal needs to scan. The terminal scans one or more carriers using the RF channel indicated in the RF channel information. In actual implementation, the radio channel information used by the terminal in the scan message for scanning may be the carrier identification information corresponding to the radio channel used by the terminal for scanning, that is, in actual implementation, the monthly base station and the terminal save the current terminal. The mapping relationship between the working RF channel and the carrier identification information of the current working channel of the RF channel. After receiving the scan message, the terminal may scan one or more carriers by using the radio frequency channel corresponding to the carrier identification information. The carrier identification information may be a carrier physical number or a carrier logical number. The one or more carriers that the terminal needs to scan include at least one of the following: all fully configured carriers supported by the terminal under the monthly base station and not currently used by the terminal, and all of the partially configured carriers Part or all of the carrier, all fully configured carriers of the neighboring base station, and some or all of the partially configured carriers, and the terminal knows some or all of the base stations identified by the base station. Preferably, the service base station sends a scan message to the terminal through the primary carrier of the terminal. Preferably, the scan message may further include at least one of the following: a scan start time, a scan interval, a scan result report rule, a report value type to be reported, and a scan type. The report value type may include at least one of the following: a carrier interference noise ratio, a received signal strength indication, a relative delay, and a round trip delay. In this way, the terminal can scan according to the above parameters and report the scan result. In addition, in the case that the radio frequency channel used by the terminal for scanning is the same channel as the radio frequency channel used for communication between the terminal and the serving base station (that is, the channel is used for normal communication between the terminal and the monthly base station, Also used for scanning of the terminal;), the scanning message also includes non-scanning intervals and repetition times. Thus, when the scan start time arrives, the terminal scans each carrier that needs to be scanned in the scan interval through the radio frequency channel, and continues communication with the serving base station at the non-scan interval, and ends the scan when the scan duration reaches. For each base station that the terminal needs to scan, the serving base station needs to notify the terminal of the scan type corresponding to the carrier that needs to be scanned among the base stations that need to be scanned. The scan type indicated in the scan message may include at least one of the following: scan only, association without base station cooperation, association of base station cooperation, association of network cooperation. Moreover, for each base station that the terminal needs to scan, the scan types corresponding to all the carriers that need to be scanned are the same or different, that is, all carriers on the base station may use the same scan type, or may be different. The carrier uses different scan types (for example, one part of the carrier scan type 1 and the other part scan type 2). In addition, if the scan type is the association of the base station collaboration or the association of the base station collaboration or the association of the network collaboration, the scan message may further include the association information, where the association information may specifically include: the association level, the time when the association is performed, and the execution association Dedicated ranging code and dedicated ranging resource information used. At this time, the terminal may send a dedicated measurement macro code to the base station (ie, the associated base station) to which the carrier associated with the terminal belongs according to the dedicated ranging resource of the to-be-scanned carrier according to the associated information; When the type is the association of the network cooperation, the base station may send the ranging result of the terminal to the serving base station by using the bone network, where the ranging result includes: the time adjustment information, the frequency adjustment information, and the frequency adjustment information on the carrier that the terminal performs the network coordination association, Power adjustment information, ranging status, The service that the carrier can provide, etc. Finally, the serving base station can send the ranging result to the terminal. In addition, the one or more carrier information that the terminal needs to scan may include: a base station bitmap and/or base station identification information that the terminal that the serving base station needs to scan in the scan message, and the terminal scans one or more carriers by using the radio frequency channel. The method includes: the terminal scanning part or all of the base stations corresponding to the base station bitmap and/or the base station identification information; and/or, the base station bitmap and/or the base station identifier that the terminal carried in the scan message needs to scan. The information, and the identification information of the carrier that needs to be scanned under the base station bitmap and/or the base station identifier, the terminal scanning the one or more carriers by using the radio frequency channel, including: the terminal to the base station bitmap and/or the base station identification information The carrier corresponding to the carrier identification information in the corresponding base station is scanned. The carrier identification information may be a carrier physical number or a carrier logical number. Before the serving base station of the terminal sends the scan message to the terminal, the terminal acquires the configuration information of the carrier of the serving base station and the neighboring base station, and the specific process is as follows: The terminal acquires the carrier configuration information of the monthly base station by using the broadcast information sent by the serving base station, including the month. Physical frequency point information and/or carrier identification information of one or more available carriers in the service base station, configuration information of each available carrier; the terminal acquires carrier set information allocated by the service base station to the terminal; and the terminal broadcasts information through the neighboring area The carrier configuration information of the neighboring cell base station is obtained, where the neighboring cell base station is: a set of base stations adjacent to the serving base station, and the carrier configuration information includes: physical frequency point information and carrier identifier of one or more available carriers in the neighboring cell base station Information, configuration information for each available carrier. In the embodiment of the present invention, the scanning may be initiated by the base station or initiated by the terminal, and the two different initiation modes are respectively described below:
(方式一） 由终端发起扫描 终端向月艮务基站发送扫描请求消息 ,月艮务基站 居扫描请求消息向终端 发送扫描消息， 该扫描消息可以认为是扫描请求消息的响应消息。 (Mode 1) The scanning initiated by the terminal sends a scanning request message to the monthly base station, and the scanning base station sends a scanning message to the terminal, and the scanning message can be regarded as a response message of the scanning request message.
(方式二） 由基站发起扫描 月艮务基站主动向终端发送扫描消息， 终端收到扫描消息后进行扫描。 在上述方式一和方式二中 ,终端也可以在发现满足预定触发条件后才向 月艮务基站发送扫描请求消息或者月艮务基站也可以在发现满足预定触发条件后 才向终端发送扫描消息， 其中， 预定触发条件包括以下之一： 终端当前使用 的载波的信道质量测量值小于或等于预定信道质量测量值门限、 终端当前使 用的载波的负载值大于或等于预定负载值门限。 并且， 对于属于服务基站的载波， 其预定触发条件与其他基站（可以是 该月艮务基站的邻区列表中的基站） 的载波的预定触发条件彼此相同或不同； 其中， 扫描属于服务基站的载波的预定触发条件与扫描属于其他基站的载波 的预定触发条件彼此相同是指： 扫描服务基站时的预定信道质量测量值门限 与扫描其他基站时的预定信道质量测量值门限相等， 或者， 扫描服务基站时 的预定负载值门限与扫描其他基站时的预定负载值门限相等。 例如， 对于归属于服务基站的载波， 其预定触发条件设置为预定信道质 量测量值门限 A, 和 /或者预定负载值门限 B, 其他基站下的载波的预定触发 条件可以与服务基站的载波的触发条件相同， 即， 如果其他基站的预定触发 条件为预定信道质量测量值门限为 A、 和 /或者预定负载值门限 B, 则认为该 其他基站的触发条件与服务基站的触发条件相同； 此外， 如果其他基站的预 定触发条件中预定信道质量测量值门限不为 A、和 /或者预定负载值门限不为 B, 则其他基站与服务基站的预定触发条件不同。 对于上述方式一，终端在其发送给服务基站的扫描请求消息中包括以下 信息至少之一： 终端推荐用于扫描的射频通道信息、 终端推荐扫描的一个或 多个载波标识信息、 终端推荐的扫描间隔、 终端推荐的非扫描间隔、 终端推 荐的重复次数、 终端推荐的扫描类型。 其中， 对于终端推荐扫描的基站比特图和 /或基站标识信息， 终端利用 射频通道对其一个或多个载波进行扫描包括： 终端对基站比特图和 /或基站标 识信息对应的基站的部分或全部载波进行扫描； 和 /或， 对于终端推荐扫描的基站比特图和 /或基站标识信息、 以及该基站比特 图和 /或基站标识信息对应的基站下需要扫描的载波标识信息， 则终端利用射 频通道对一个或多个载波进行扫描包括： 终端对基站比特图和 /或基站标识信 息对应的基站下与载波标识信息对应的载波进行扫描。 其中 ,上述载波标识信息可以是载波物理编号，也可以是载波逻辑编号。 对于终端请求扫描的每个基站 ,终端请求的该基站上所有推荐扫描载波 的扫描类型彼此相同或不同， 例如， 终端可以请求在该基站的一部分载波釆 用扫描方式 1进行扫描，在该基站的另一部分载波釆用扫描方式 2进行扫描。 应当注意， 不论釆用方式一还是釆用方式二， 最终终端在进行扫描时所 需的相关参数均由服务基站来确定， 即， 服务基站可能不釆用终端发送的扫 描请求消息中携带的参数。 在扫描结束之后 ,终端可以按照扫描结果上 ^艮规则通过终端的主载波将 扫描结果发送给服务基站， 其中， 扫描结果包括： 报告模式、 报告值类型和 终端对一个或多个载波进行扫描后的测量结果； 服务基站根据扫描结果为终 端选择目标载波。 通过本发明实施例提供的技术方案，使得终端能够在多载波系统中完成 在多个基站的多个载波上的扫描， 为终端的基站内和基站间载波切换提供了 合理的参考值。 下面将结合具体实例描述 居本实施例的方法中的扫描请求消息或扫 描消息。 其中， 在下文中所描述的多种消息格式中， 对于扫描请求消息或扫 描消息中的部分参数可以不进行指定。 表 1是根据本发明的扫描请求消息的一个实例， 该实例中， 可以对邻区 基站的每个需要扫描的载波分别设置扫描类型， 对服务基站的需要扫描的载 波都釆用无关联的扫描 （即， 对于服务基站的需要扫描的载波的扫描类型与 邻区基站的需要扫描的载波的扫描类型不相同， 且一个邻区基站中的不同载 波可能对应于不同的扫描类型）。具体地，在终端用于进行扫描的射频通道与 终端和服务基站通信所使用的射频通道为同一通道的情况下， 扫描请求消息 中需要设置扫描间隔、 非扫描间隔和重复次数， 此时， 整个扫描时长是扫描 间隔与非扫描间隔的和与重复次数的乘积； 在终端用于进行扫描的射频通道 与终端和服务基站通信所使用的射频通道不是同一通道的情况下， 扫描请求 消息可以不设置非扫描间隔和重复次数， 此时， 整个扫描时长就是扫描间隔 的值。 表 1 (Method 2) The base station initiates scanning, and the base station actively sends a scan message to the terminal, and the terminal scans after receiving the scan message. In the foregoing manners 1 and 2, the terminal may send the scan request message to the monthly base station after the discovery of the predetermined trigger condition is met, or the monthly base station may send the scan message to the terminal after the discovery of the predetermined trigger condition is met. The predetermined triggering condition includes one of the following: a channel quality measurement value of a carrier currently used by the terminal is less than or equal to a predetermined channel quality measurement threshold, and the terminal currently makes The load value of the used carrier is greater than or equal to the predetermined load value threshold. And, for a carrier belonging to the serving base station, the predetermined trigger condition is the same as or different from the predetermined trigger conditions of the carriers of the other base stations (which may be the base stations in the neighboring cell list of the monthly base station); wherein the scanning belongs to the serving base station The predetermined trigger condition of the carrier and the predetermined trigger condition for scanning the carriers belonging to the other base stations are the same as each other: the predetermined channel quality measurement threshold when scanning the serving base station is equal to the predetermined channel quality measurement threshold when scanning other base stations, or the scanning service The predetermined load value threshold at the time of the base station is equal to the predetermined load value threshold when scanning other base stations. For example, for a carrier belonging to the serving base station, the predetermined trigger condition is set to a predetermined channel quality measurement threshold A, and/or a predetermined load threshold C, and the predetermined trigger condition of the carrier under the other base station may be triggered by the carrier of the serving base station. The conditions are the same, that is, if the predetermined trigger condition of the other base station is that the predetermined channel quality measurement threshold is A, and/or the predetermined load value threshold B, the trigger condition of the other base station is considered to be the same as the trigger condition of the serving base station; The predetermined channel quality measurement threshold is not A in the predetermined trigger condition of the other base station, and/or the predetermined load value threshold is not B, and the predetermined trigger conditions of the other base station and the serving base station are different. For the first mode, the terminal includes at least one of the following information in the scan request message sent by the terminal to the serving base station: radio channel information recommended by the terminal for scanning, one or more carrier identification information recommended by the terminal for scanning, and recommended scanning by the terminal. Interval, non-scanning interval recommended by the terminal, number of repetitions recommended by the terminal, and type of scanning recommended by the terminal. Wherein, for the base station bitmap and/or the base station identification information of the terminal recommendation scan, the terminal scanning the one or more carriers by using the radio frequency channel, including: part or all of the base station corresponding to the base station bitmap and/or the base station identification information by the terminal The carrier performs scanning; and/or, for the base station bitmap and/or the base station identification information of the terminal recommendation scan, and the carrier identification information that needs to be scanned under the base station corresponding to the base station bitmap and/or the base station identification information, the terminal uses the radio frequency channel. Scanning the one or more carriers includes: the terminal scans the carrier corresponding to the carrier identification information under the base station corresponding to the base station bitmap and/or the base station identification information. The carrier identification information may be a carrier physical number or a carrier logical number. For each base station that the terminal requests to scan, the scan types of all recommended scan carriers on the base station requested by the terminal are the same or different from each other. For example, the terminal may request scanning of a part of the carrier in the base station by scanning mode 1 at the base station. Another part of the carrier is scanned by scanning mode 2. It should be noted that, regardless of the mode 1 or the mode 2, the relevant parameters required by the terminal to perform scanning are determined by the serving base station, that is, the serving base station may not use the parameters carried in the scan request message sent by the terminal. . After the scanning ends, the terminal may send the scanning result to the serving base station by using the primary carrier of the terminal according to the scanning result, wherein the scanning result includes: a reporting mode, a report value type, and a terminal scanning the one or more carriers. The measurement result; the serving base station selects the target carrier for the terminal according to the scan result. The technical solution provided by the embodiment of the present invention enables the terminal to complete scanning on multiple carriers of multiple base stations in a multi-carrier system, and provides a reasonable reference value for carrier switching between the base station and the base station of the terminal. The scan request message or the scan message in the method of the present embodiment will be described below with reference to specific examples. Among them, in the various message formats described below, some parameters in the scan request message or the scan message may not be specified. Table 1 is an example of a scan request message according to the present invention. In this example, a scan type may be set for each carrier of the neighboring base station that needs to be scanned, and an unrelated scan may be used for the carrier of the serving base station that needs to be scanned. (That is, the scan type of the carrier that needs to be scanned for the serving base station is different from the scan type of the carrier that the neighboring base station needs to scan, and different carriers in one neighboring base station may correspond to different scan types). Specifically, in a case where the radio frequency channel used for scanning by the terminal is the same channel as the radio frequency channel used for communication between the terminal and the serving base station, the scanning request message, the non-scanning interval, and the repetition number need to be set in the scan request message. The scanning duration is the product of the sum of the scanning interval and the non-scanning interval and the number of repetitions; in the case where the RF channel used for scanning by the terminal is not the same channel as the RF channel used for communication between the terminal and the serving base station, the scan request message may not be set. The non-scan interval and the number of repetitions. At this time, the entire scan duration is the value of the scan interval. Table 1
名称 大小（单位： 注释  Name Size (unit: comment
比特）  Bit)
消息格式 {  Message format {
消息类型 8  Message type 8
扫描间隔 对于开启多通道的终端 ,直 接指定扫描时间长度 非扫描间隔指示 1 0: 不需要非扫描间隔和重 复次数 Scan interval For a multi-channel terminal, directly specify the scan time length. Non-scan interval indication 1 0: No non-scan interval and heavy Multiple times
1： 需要  1: need
If (非扫描间隔指示 ==1 )  If (non-scan interval indication ==1)
{非扫描间隔  {non-scan interval
重复次数} repeat times}
扫描射频通道改变指示 1 用于扫描的射频通道是否 是当前射频通道 Scan RF channel change indication 1 Is the RF channel used for scanning the current RF channel?
1： 是  1: Yes
0: 不是  0: No
If (扫描射频通道改变指示 ==0 )  If (scan RF channel change indication ==0)
{用于扫描的射频通道 }  {RF channel for scanning }
推荐扫描的基站个数 8 值为 0表示需要扫描服务 基站内的载波 The number of recommended base stations to be scanned 8 The value of 0 indicates that the service needs to be scanned.
If (推荐扫描的基站个数 ==0 ) {  If (number of base stations recommended for scanning ==0) {
推荐扫描的载波个数 Recommended number of carriers to scan
for(i==0 , ^推荐扫描的载波个数； For(i==0, ^ recommended number of carriers to scan;
i++){ i++){
推荐扫描的载波信息 频点 /载波编号 Recommended carrier information for scanning frequency / carrier number
}  }
}  }
else if (推荐扫描的基站个数 Else if (number of base stations recommended for scanning)
==0xFF ) {  ==0xFF ) {
邻区广播消息中基站比特图大小 Base station bitmap size in neighbor broadcast messages
邻区广播消息中基站比特图 比特图中： In the neighboring area broadcast message, the base station bitmap is in the bit map:
1表示需要扫描  1 indicates that scanning is required
0表示不扫 4笛  0 means not sweeping 2 flute
for( 每个 T){ For( each T){
要扫描的载波个数 Number of carriers to scan
for(i==0 , i<要扫描载波个数； For(i==0, i<the number of carriers to be scanned;
i++){ i++){
载波信息 频点 /载波编号 Carrier information frequency / carrier number
扫描类型 3 ObOOO: 无关联的扫描 Scan Type 3 ObOOO: Unrelated Scan
ObOOl: 关联级别 0的扫描 ObO lO: 关联级别 1的扫描 ObO l l : 关联级别 2的扫描 ObOOl: Correlation level 0 scan ObO lO: Correlation level 1 scan ObO l l : Correlation level 2 scan
} }
}  }
}else {  }else {
for j = 0; j <推荐扫描的基站个数； For j = 0; j < the number of base stations recommended for scanning;
j++){ 邻区基站序号 8 j++){ Neighboring area base station number 8
邻区基站要扫描的载波个数  Number of carriers to be scanned by neighboring base stations
for(k==0 , 1^<邻区基站要扫描的载  For(k==0, 1^<the load of the neighboring base station to be scanned
波个数; k++){  Wave number; k++){
载波信息 频点 /载波编号  Carrier information frequency / carrier number
扫描类型  Scan type
}  }
}  }
}  }
釆用完整基站标识的 4舞荐扫描基  4 4 recommended scan bases with complete base station identification
站的个数  Number of stations
for(i = 0; i〈釆用完整基站标识的  For(i = 0; i〈釆 with the full base station identifier
推荐扫描基站的个数； i++){  Recommended number of scanning base stations; i++){
推荐的基站的完整标识 48  The complete identification of the recommended base station 48
要扫描的载波个数 Number of carriers to scan
, j<要扫描的载波个数；  , j < the number of carriers to be scanned;
j++){  j++){
载波信息 频点 /载波编号  Carrier information frequency / carrier number
扫描类型  Scan type
} }
}  }
} 表 2是根据本发明的扫描请求消息的另一个实例， 该实施例中，对邻区基 站的所有需要扫描的载波设置相同的扫描类型， 对服务基站的需要扫描的载波 都釆用无关联的扫描 （即， 对所有邻区基站中的需要扫描的载波设置了相同的 扫描类型， 服务基站的需要扫描的载波所设置的扫描类型相同， 对于服务基站 的载波设置的扫描类型与对邻区基站的载波设置的扫描类型可能不相同）。 表 2 Table 2 is another example of a scan request message according to the present invention. In this embodiment, all carriers that need to be scanned are set to the same scan type for the neighboring base station, and the carrier that needs to be scanned for the serving base station is used without association. Scanning (that is, setting the same scanning type for carriers in all neighboring base stations that need to be scanned, the scanning type set by the carrier that needs to be scanned by the serving base station is the same, and the scanning type and the neighboring area set for the carrier of the serving base station The scan type of the base station's carrier settings may be different). Table 2
名称 大小 注释  Name Size Comments
(单位： 比特）  (unit: bit)
消息格式 {  Message format {
消息类型 8  Message type 8
扫描间隔 对于开启多通道的终端， 直 接指定扫描时间长度 非扫描间隔指示 1 0: 不需要非扫描间隔和重复 次数 Scan interval For a multi-channel terminal, directly specify the scan time length. Non-scan interval indication 1 0: No non-scan interval and repetition are required. Number of times
1： 需要  1: need
If (非扫描间隔指示 ==1 )  If (non-scan interval indication ==1)
{非扫描间隔  {non-scan interval
重复次数} repeat times}
扫描射频通道改变指示 1 用于扫描的射频通道是否是 当前的射频通道 Scan RF channel change indication 1 Is the RF channel used for scanning the current RF channel?
1： 是  1: Yes
0: 不是  0: No
If (扫描射频通道改变指示  If (scan RF channel change indication
==0 )  ==0 )
{用于扫描的射频通道 }  {RF channel for scanning }
推荐扫描的基站个数 8 值为 0表示需要扫描服务基 站内的载波 The number of recommended base stations to be scanned 8 A value of 0 indicates that the carrier in the service base station needs to be scanned.
If (推荐扫描的基站个数  If (the number of base stations recommended for scanning)
==0 )  ==0 )
{推荐扫描的载波个数  {Number of recommended carriers to scan
for(i==0, i<4舞荐扫描的载波 For(i==0, i<4 carrier of the recommended scan
个数； i++){ Number; i++){
推荐扫描的载波信息 } 频点 /载波编号 Recommended carrier information for scanning } Frequency / carrier number
}  }
else if (推荐扫描的基站个数 Else if (number of base stations recommended for scanning)
==0xFF ) {  ==0xFF ) {
邻区广播消息中基站比特图 Base station bitmap in neighboring area broadcast message
大小 Size
邻区广播消息中基站比特图 比特图中： In the neighboring area broadcast message, the base station bitmap is in the bit map:
1表示需要扫描  1 indicates that scanning is required
0表示不扫 4笛  0 means not sweeping 2 flute
for( 每个 T){ For( each T){
扫描类型 3 ObOOO: 无关联的扫描 Scan Type 3 ObOOO: Unrelated Scan
ObOOl: 关联级别 0的扫描 ObO lO: 关联级别 1的扫描 ObO l l : 关联级别 2的扫描 ObOOl: Correlation level 0 scan ObO lO: Correlation level 1 scan ObO l l : Correlation level 2 scan
} }
}else {  }else {
for j = 0; j <推荐扫描的基站 For j = 0; j <recommended scanning base station
个数; j++){ Number; j++){
邻区基站序号 8 Neighboring area base station number 8
扫描类型 Scan type
}  }
} 釆用完整基站标识的推荐扫 } 推荐Use the recommended sweep of the complete base station logo
描基站的个数  Number of base stations
for(i = 0; i〈釆用完整基站标  For(i = 0; i<釆 using the complete base station
识的推荐扫描基站的个数；  The number of recommended base stations for scanning;
i++){  i++){
推荐的基站的完整标识 48  The complete identification of the recommended base station 48
扫描类型 3  Scan type 3
}  }
} 表 3是根据本发明的扫描消息的一个实例，该实施例中，对邻区基站的需 要扫描的载波釆用了相同的扫描类型， 对服务基站的需要扫描的载波都釆用无 关联的扫描（即，对所有邻区基站中的需要扫描的载波设置了相同的扫描类型， 服务基站的需要扫描的载波所设置的扫描类型相同， 对于服务基站的载波设置 的扫描方式与对邻区基站的载波设置的扫描类型可能不相同）。 对所有基站都 Table 3 is an example of a scan message according to the present invention. In this embodiment, the same scanning type is used for the carrier of the neighboring base station that needs to be scanned, and the carrier that needs to be scanned by the serving base station is used without any association. Scanning (that is, the same scanning type is set for the carriers in all neighboring base stations that need to be scanned, and the scanning type of the carrier that needs to be scanned by the serving base station is the same, and the scanning mode of the carrier set for the serving base station and the neighboring base station are set. The scan type of the carrier setting may not be the same). For all base stations
o o o o  o o o o
釆用同样的报告值类型。 ,,,, 表 3  Use the same report value type. ,,,, table 3
名称 大小 注释 Name Size Comments
(单位： 比特）  (unit: bit)
消息格式 { Message format {
消息类型 8 Message type 8
扫描间隔 对于开启多通道的终端， 直 接指定扫描时间长度 非扫描间隔指示 1 0: 不需要非扫描间隔和重复 次数 Scan interval For a multi-channel terminal, directly specify the scan time length. Non-scan interval indication 1 0: No non-scan interval and number of repetitions are required.
1： 需要  1: need
If (非扫描间隔指示 ==1)  If (non-scan interval indication ==1)
{ 非扫描间隔  {non-scan interval
重复次数 } repeat times }
扫描射频通道改变指示 1 用于扫描的射频通道是否是 当前通道 Scan RF channel change indication 1 Is the RF channel used for scanning the current channel?
1： 是  1: Yes
0: 不是  0: No
If (扫描射频通道改变指示 ==0 )  If (scan RF channel change indication ==0)
{用于扫描的射频通道 }  {RF channel for scanning }
报告模式 2 不上报 Report mode 2 not reported
周期上报  Periodic report
事件触发 4艮告 一次扫描上 4艮 报告周期 Event triggers 4 一次 一次 一次 scan once 4艮 Reporting cycle
报告值类型 8 需要上报的测量值类型的比 特图 Reported value type 8 Bitmap of the type of measured value that needs to be reported
比特 0: 基站载波千扰噪声 比  Bit 0: base station carrier interference noise ratio
比特 1: 接收信号强度指示 # 2: 目  Bit 1: Received Signal Strength Indicator # 2:
比特 3: 往返时延 其余比特保留  Bit 3: Round trip delay, remaining bits reserved
使用邻区消息中基站索引 Use the base station index in the neighbor message
使用扫描请求消息中基站索弓 1 Use the base station cable in the scan request message 1
if (扫描间隔! =0) { If (scan interval! =0) {
扫描开始的超帧号 Superframe number at the start of the scan
If( 使用邻区消息中基站索引 ==  If (use base station index in neighbor message ==
1){  1){
邻区广播消息中基站比特图大小 Base station bitmap size in neighbor broadcast messages
邻区广播消息中基站比特图 比特图中 Base station bitmap in the neighboring area broadcast message
1表示需要扫描  1 indicates that scanning is required
0表示不扫 4笛  0 means not sweeping 2 flute
for( 每个 T){ For( each T){
扫描类型 ObOOO: 无关联的扫描 Scan Type ObOOO: Unrelated Scan
ObOOl: 关联级别 0的扫描 ObOlO: 关联级别 1的扫描 ObOll: 关联级别 2的扫描 if ((扫 4笛类型 ==0b010)OR  ObOOl: Correlation level 0 scan ObOlO: Correlation level 1 scan ObOll: Correlation level 2 scan if ((Sweep 2 flute type ==0b010)OR
(扫描类型 ==0b011)) (scan type ==0b011))
{专用测距码 }  {dedicated ranging code }
要扫描载波个数 Number of carriers to scan
for(i==0, i<要扫描的载波个数； For(i==0, i<the number of carriers to be scanned;
i++){ i++){
载波信息 频点 /载波编号 Carrier information frequency / carrier number
if ((扫 4笛类型 ==0b010)OR If ((Sweep 2 flute type ==0b010)OR
(扫描类型 ==0b011)) { (scan type ==0b011)) {
在该载波进行专用测距的超帧 Superframe for dedicated ranging on this carrier
专用测距资源信息 Dedicated ranging resource information
}  }
}  }
}  }
} else{  } else{
推荐扫描的基站个数 Recommended number of base stations to scan
if (推荐扫描的基站个数 ==O 对月艮务基站内的载波扫描 推荐扫描的载波个数 If (the number of base stations recommended for scanning ==O) Scanning the carrier in the monthly base station Recommended number of carriers to scan
for(i==0, i<推荐扫描的载波个数
Figure imgf000015_0001
For(i==0, i<number of carriers to be scanned
Figure imgf000015_0001
Figure imgf000016_0001
Figure imgf000016_0001
表 4是根据本发明的扫描消息的另一个实例， 该实施例中，对服务基站和 邻区基站的载波都釆用无关联的扫描， 对所有基站都釆用同样的报告值类型。 表 4  Table 4 is another example of a scan message in accordance with the present invention. In this embodiment, unassociated scans are applied to both the serving base station and the neighbor base station carriers, and the same report value type is used for all base stations. Table 4
名称 大小 注释  Name Size Comments
(单位： 比特）  (unit: bit)
消息格式 {  Message format {
消息类型 8  Message type 8
扫描间隔 对于开启多通道的终端， 直 接指定扫描时间长度 非扫描间隔指示 1 0: 不需要非扫描间隔和重复 次数 Scan interval For a multi-channel terminal, directly specify the scan time length. Non-scan interval indication 1 0: No non-scan interval and repetition are required. Number of times
1： 需要  1: need
If (非扫描间隔指示 ==1)  If (non-scan interval indication ==1)
{ 非扫描间隔  {non-scan interval
重复次数 } repeat times }
扫描射频通道改变指示 1 用于扫描的射频通道是否是 当前通道 Scan RF channel change indication 1 Is the RF channel used for scanning the current channel?
1： 是  1: Yes
0: 不是  0: No
If (扫描射频通道改变指示 ==0 ) If (scan RF channel change indication ==0)
{用于扫描的射频通道 }  {RF channel for scanning }
报告模式 2 ObOO: 不上 4艮 Report mode 2 ObOO: not 4
ObOl : 周期上 4艮  ObOl : 4艮 on the cycle
OblO: 事件触发 4艮告 Obl l : 一次扫描上报 报告周期  OblO: Event Trigger 4 Report Obl l : One scan report period
报告值类型 8 需要上报的测量值类型的比 特图 Reported value type 8 Bitmap of the type of measured value that needs to be reported
比特 0: 基站载波千扰噪声 比  Bit 0: base station carrier interference noise ratio
比特 1 : 接收信号强度指示 # 2: 目  Bit 1 : Received Signal Strength Indicator # 2:
比特 3: 往返时延 其余比特保留  Bit 3: Round trip delay, remaining bits reserved
使用邻区消息中基站索引 Use the base station index in the neighbor message
使用扫描请求消息中基站索弓 1 Use the base station cable in the scan request message 1
if (扫描间隔! = 0) { If (scan interval! = 0) {
扫描开始的超帧号 Superframe number at the start of the scan
If( 使用邻区消息中基站索引 ==  If (use base station index in neighbor message ==
1){ 1){
邻区广播消息中基站比特图大小 Base station bitmap size in neighbor broadcast messages
邻区广播消息中基站比特图 比特图中 Base station bitmap in the neighboring area broadcast message
1表示需要扫描  1 indicates that scanning is required
0表示不扫 4笛  0 means not sweeping 2 flute
} else{  } else{
推荐扫描的基站个数 Recommended number of base stations to scan
if (推荐扫描的基站个数 == O 对月艮务基站内的载波扫描 推荐扫描的载波个数 If (the number of base stations recommended for scanning == O) Scanning the carrier in the monthly base station Recommended number of carriers to scan
for(i==0, i<推荐扫描的载波个数 For(i==0, i<number of carriers to be scanned
_； i++){ _; i++){
载波信息 频点 /载波编号 Carrier information frequency / carrier number
} }
Figure imgf000018_0001
Figure imgf000018_0001
表 5是根据本发明的服务基站向终端发送的关联报告所对应的列表。 表 5  Table 5 is a list corresponding to the association report sent by the serving base station to the terminal according to the present invention. table 5
名称 大小 注释  Name Size Comments
(单位： 比特）  (unit: bit)
消息格式 {  Message format {
消息类型 8  Message type 8
推荐扫描的基站个数  Recommended number of base stations to scan
for(i = 0; i <4舞荐扫描的基站个  For(i = 0; i <4 base station for the recommended scan
数; i++){  Number; i++){
基站序号 需要扫描的载波个数 Base station number Number of carriers to be scanned
, j<要扫描的载波个数；  , j < the number of carriers to be scanned;
j++){  j++){
载波信息 频点 /载波编号  Carrier information frequency / carrier number
时间调整信息  Time adjustment information
功率调整信息  Power adjustment information
频率偏移调整信息  Frequency offset adjustment information
测距状态  Ranging state
可提供的服务信息 Service information available
Figure imgf000019_0001
Figure imgf000019_0001
表 6 是根据本发明的终端向服务基站发送的扫描报告消息所对应的实施 例， 扫描完成后， 终端根据扫描结果上报规则将扫描结果报告给服务基站， 该 结果作为服务基站在选择目标载波时的参考值之一， 在本实施例中， 对每个被 测量的基站的被测量载波都进行上报。 表 6 Table 6 is an embodiment corresponding to the scan report message sent by the terminal to the serving base station according to the present invention. After the scan is completed, the terminal reports the scan result to the serving base station according to the scan result reporting rule, and the result is used as the serving base station when selecting the target carrier. One of the reference values, in this embodiment, the measured carrier of each measured base station is reported. Table 6
Figure imgf000019_0002
Figure imgf000020_0001
Figure imgf000019_0002
Figure imgf000020_0001
Figure imgf000021_0001
Figure imgf000021_0001
下面结合具体实例对本发明的扫描方法进行详细说明。 实施例一 图 3 是才艮据本发明实施例一的由月艮务基站发起的单通道终端的多载波扫 描的流程图， 如图 3所示， 包括如下步骤： 步骤 1 , 终端从系统信息中获取其服务基站的多载波配置信息， 从邻区广 播消息中获取邻区基站的多载波配置信息。 步骤 2, 服务基站向终端发送扫描消息， 其中， 该扫描消息中携带以下 参数至少之一： 需要扫描的载波信息、 扫描开始时间、 扫描间隔、 非扫描间 隔、 重复次数、 扫描结果的上报规则、 需要上报的报告值类型、 扫描类型、 扫描时的关联信息。 其中， 终端需要扫描的载波包括以下情况至少之一： 务基站下终端支持的且终端当前未使用的所有全配置载波和所有部分配置载 波中的部分或全部载波、 邻区基站的所有全配置载波和部分配置载波中的部 分或全部载波、 终端获知基站标识的基站中的部分或全部载波。 需要扫描的 载波信息可以是载波编号和 /或载波物理频点信息。 步骤 3 , 上述扫描开始时间到达时， 终端通过上述单射频通道在扫描间隔 内对需要扫描的载波列表中的每个载波进行扫描， 具体地， 终端根据需要上报 的报告值类型中的信息对载波进行扫描； 并且在非扫描间隔继续和服务基站的 通信， 当扫描时长达到时， 结束扫描。 步骤 4, 按照预定上报规则， 终端将扫描结果上报给基站。 通过上述的处理，实现了单通道终端载波对艮务基站和邻区基站的载波扫 描。 实施例二 图 4 是本发明实施例二的由月艮务基站发起的多通道终端的多载波扫描流 程图， 包括如下步骤： 步骤 1 , 终端从系统信息中获取服务基站的多载波配置信息， 从邻区广播 消息中获取邻区基站的多载波配置信息。 步骤 2, 服务基站发起扫描时， 服务基站发送扫描消息， 且在消息中携带 以下信息至少之一： 终端用于扫描的射频通道信息、 需要扫描的载波信息、 扫 描开始时间、 扫描间隔、 扫描结果的上报规则、 需要上报的报告值类型、 扫描 类型、 扫描时的关联信息。 需要说明的是， 当终端釆用多个通道同服务基站进 行交互、 且终端用于进行扫描的射频通道与终端和服务基站通信所使用的射频 通道不是同一通道的情况下， 不需要设置非扫描间隔和重复次数， 否则需要设 置该参数。 步骤 3 , 在预定的扫描开始时间， 如果终端用于进行扫描的射频通道与终 端和服务基站通信所使用的射频通道不是同一通道， 终端在扫描间隔内利用一 个通道对预定载波进行扫描， 并且在另一个通道上保持和服务基站的联系。 当 扫描时长达到预定值， 结束扫描。 如果终端用于进行扫描的射频通道与终端和 服务基站通信所使用的射频通道是同一通道， 则该通道上的扫描操作同实施例 一， 不再赘述。 步骤 4, 按照预定上报规则， 终端将扫描结果上报给基站。 通过上述的处理，实现了多通道终端载波对月艮务基站和邻区基站的载波扫 描。 实施例三 图 5 是才艮据本发明实施例三的由终端发起的单通道终端的多载波扫描的 流程图， 包括以下步 4聚： 步骤 1 , 终端从系统信息中获取服务基站的多载波配置信息， 从邻区广播 消息中获取邻区基站的多载波配置信息。 步骤 2 , 终端发起扫描时将发送扫描请求消息， 且在消息中携带终端推荐 扫描载波信息、 扫描开始时间、 扫描间隔、 非扫描间隔和重复次数等参数。 步骤 3 , 月艮务基站收到终端的扫描请求消息后， 发送扫描消息给终端， 除 设置终端所请求的扫描参数外， 并且还需在响应消息中设置扫描结果的上报规 则、 需要上报的报告值类型、 扫描类型、 扫描时的关联信息等参数； 步 4聚 4,在预定的扫描开始时间，终端在扫描间隔内对预定载波进行扫描， 在非扫描间隔继续和服务基站的通信， 当扫描时长达到预定值， 结束扫描。 步骤 5 , 按照预定上报规则， 终端将扫描结果上报给基站。 通过上述的处理，实现了单通道终端载波对艮务基站和邻区基站的载波扫 描。 实施例四 图 6 是才艮据本发明实施例四的由终端发起的多通道终端的多载波扫描的 流程图， 包括以下步 4聚： 步骤 1 , 终端从系统信息中获取服务基站的多载波配置信息， 从邻区广播 消息中获取邻区基站的多载波配置信息。 步骤 2 , 终端发起扫描时将发送扫描请求消息， 且在消息中携带终端推荐 用于扫描的射频通道信息、 需要扫描载波信息、 扫描开始时间、 扫描间隔等参 数。 当终端用于进行扫描的射频通道与终端和服务基站通信所使用的射频通道 不是同一通道的情况下， 不需要携带非扫描间隔和重复次数， 否则需要携带。 步骤 3 , 月艮务基站收到终端的扫描请求消息后， 发送扫描消息给终端， 除 设置终端所请求的扫描参数外， 并且还需在响应消息中设置扫描结果的上报规 则、 需要上报的报告值类型、 扫描类型、 扫描时的关联信息等参数； 步骤 4, 在预定的扫描开始时间， 如果终端用于进行扫描的射频通道与终 端和服务基站通信所使用的射频通道不是同一通道， 终端在扫描间隔内利用一 个通道对预定载波进行扫描， 并且在另一个通道上保持和服务基站的联系。 当 扫描时长达到预定值， 结束扫描。 如果终端用于进行扫描的射频通道与终端和 服务基站通信所使用的射频通道是同一通道， 则该通道上的扫描操作同实施例 三， 不再赞述。 步骤 5 , 按照预定上报规则， 终端将扫描结果上报给基站。 通过上述的处理，实现了多通道终端载波对月艮务基站和邻区基站的载波的 扫描。 综上所述，借助于本发明的技术方案， 通过本发明的基于多载波系统的扫 描方法， 使得终端能够在多载波系统中完成在多个基站的多个载波上的扫描， 为终端的基站内和基站间载波切换提供了合理的参考值。 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。 The scanning method of the present invention will be described in detail below with reference to specific examples. Embodiment 1 FIG. 3 is a flowchart of multi-carrier scanning of a single-channel terminal initiated by a monthly service base station according to Embodiment 1 of the present invention. As shown in FIG. 3, the method includes the following steps: Step 1: The terminal acquires multi-carrier configuration information of the serving base station from the system information, and acquires multi-carrier configuration information of the neighboring base station from the neighboring area broadcast message. Step 2: The serving base station sends a scan message to the terminal, where the scan message carries at least one of the following parameters: carrier information to be scanned, scan start time, scan interval, non-scan interval, number of repetitions, reporting rule of scan result, The type of report value that needs to be reported, the type of scan, and the associated information at the time of scanning. The carrier that the terminal needs to scan includes at least one of the following: all fully configured carriers supported by the terminal and supported by the terminal, and some or all carriers of all the partially configured carriers, and all configured carriers of the neighboring base stations And part or all of the carriers in the partial configuration carrier, and the terminal knows some or all of the base stations in the base station identifier. The carrier information that needs to be scanned may be a carrier number and/or carrier physical frequency point information. Step 3: When the scan start time arrives, the terminal scans each carrier in the carrier list to be scanned in the scan interval by using the single radio frequency channel. Specifically, the terminal compares the carrier according to the information in the report value type that needs to be reported. Scanning is performed; and communication with the serving base station is continued at the non-scanning interval, and when the scanning duration is reached, the scanning is ended. Step 4: The terminal reports the scan result to the base station according to the predetermined reporting rule. Through the above processing, carrier scanning of the single-channel terminal carrier to the serving base station and the neighboring base station is realized. Embodiment 2 FIG. 4 is a flowchart of multi-carrier scanning of a multi-channel terminal initiated by a monthly base station according to Embodiment 2 of the present invention, which includes the following steps: Step 1: The terminal acquires multi-carrier configuration information of the serving base station from system information, Obtaining multi-carrier configuration information of the neighboring base station from the neighboring area broadcast message. Step 2: When the serving base station initiates scanning, the serving base station sends a scan message, and the message carries at least one of the following information: radio channel information used by the terminal for scanning, carrier information to be scanned, scan start time, scan interval, scan result Escalation rules, types of report values that need to be reported, scan type, and associated information when scanning. It should be noted that, when the terminal uses multiple channels to interact with the serving base station, and the radio channel used by the terminal for scanning does not have the same channel as the radio channel used for communication between the terminal and the serving base station, no non-scanning is required. Interval and number of repetitions, otherwise you need to set this parameter. Step 3: At a predetermined scan start time, if the radio frequency channel used by the terminal for scanning is not the same channel as the radio frequency channel used for communication between the terminal and the serving base station, the terminal scans the predetermined carrier by using one channel in the scan interval, and The connection to the serving base station is maintained on the other channel. When the scanning duration reaches a predetermined value, the scanning is ended. If the radio channel used by the terminal for scanning is the same as the radio channel used for communication between the terminal and the serving base station, the scanning operation on the channel is the same as that in the first embodiment, and details are not described herein. Step 4: The terminal reports the scan result to the base station according to the predetermined reporting rule. Through the above processing, carrier scanning of the multi-channel terminal carrier to the base station and the neighboring base station is realized. Embodiment 3 FIG. 5 is a flowchart of multi-carrier scanning of a single-channel terminal initiated by a terminal according to Embodiment 3 of the present invention, which includes the following steps: Step 1: The terminal acquires multi-carrier of the serving base station from the system information. The configuration information is used to obtain multi-carrier configuration information of the neighboring base station from the neighboring area broadcast message. Step 2: The terminal sends a scan request message when the terminal initiates the scan, and carries the parameters such as the recommended scan carrier information, the scan start time, the scan interval, the non-scan interval, and the number of repetitions. Step 3: After receiving the scan request message of the terminal, the monthly service base station sends a scan message to the terminal, in addition to setting the scan parameters requested by the terminal, and setting the report of the scan result and the report to be reported in the response message. Value type, scan type, association information during scanning, etc.; Step 4: At a predetermined scan start time, the terminal scans the predetermined carrier during the scan interval, and continues communication with the serving base station at the non-scan interval, when scanning The duration reaches the predetermined value and the scan ends. Step 5: The terminal reports the scan result to the base station according to the predetermined reporting rule. Through the above processing, carrier scanning of the single-channel terminal carrier to the serving base station and the neighboring base station is realized. Embodiment 4 FIG. 6 is a flowchart of multi-carrier scanning of a multi-channel terminal initiated by a terminal according to Embodiment 4 of the present invention, which includes the following steps: Step 1: The terminal acquires multi-carrier configuration information of the serving base station from the system information, and acquires multi-carrier configuration information of the neighboring base station from the neighboring area broadcast message. Step 2: The terminal sends a scan request message when the terminal initiates the scan, and carries the parameters of the radio channel information recommended by the terminal for scanning, the need to scan the carrier information, the scan start time, the scan interval, and the like. When the radio channel used by the terminal for scanning is not in the same channel as the radio channel used for communication between the terminal and the serving base station, it is not necessary to carry the non-scanning interval and the number of repetitions, otherwise it needs to be carried. Step 3: After receiving the scan request message of the terminal, the monthly service base station sends a scan message to the terminal, in addition to setting the scan parameters requested by the terminal, and setting the report of the scan result and the report to be reported in the response message. Value type, scan type, association information during scanning, etc. Step 4: At a predetermined scan start time, if the RF channel used by the terminal for scanning is not the same channel as the RF channel used for communication between the terminal and the serving base station, the terminal is at The predetermined carrier is scanned with one channel during the scanning interval, and the communication with the serving base station is maintained on the other channel. When the scanning duration reaches a predetermined value, the scanning is ended. If the radio channel used by the terminal for scanning is the same channel as the radio channel used for communication between the terminal and the serving base station, the scanning operation on the channel is the same as that in the third embodiment, and is not mentioned. Step 5: The terminal reports the scan result to the base station according to the predetermined reporting rule. Through the above processing, the scanning of the carrier of the multi-channel terminal carrier to the monthly base station and the neighboring base station is realized. In summary, with the technical solution of the present invention, the multi-carrier system-based scanning method of the present invention enables the terminal to perform scanning on multiple carriers of multiple base stations in a multi-carrier system, which is the basis of the terminal. Carrier switching between the station and the base station provides a reasonable reference value. 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.

Claims

权 利 要 求 书  Claims
1. 一种基于多载波系统的扫描方法， 其特征在于， 包括： 服务基站向其终端发送扫描消息， 其中， 所述扫描消息中包括： 所 述终端需要扫描的一个或多个载波信息； A scanning method based on a multi-carrier system, comprising: a serving base station sending a scan message to its terminal, wherein the scan message includes: one or more carrier information that the terminal needs to scan;
所述终端对所述一个或多个载波进行扫描。  The terminal scans the one or more carriers.
2. 才艮据权利要求 1所述的方法， 其特征在于， 当所述终端为多通道终端时， 所述扫描消息还包括所述终端用于进行扫描的射频通道信息， 所述终端 对所述一个或多个载波进行扫描包括： 2. The method according to claim 1, wherein when the terminal is a multi-channel terminal, the scan message further includes radio channel information used by the terminal to perform scanning, where the terminal is located The scanning of one or more carriers includes:
所述终端利用所述射频通道信息中所指示的射频通道对所述一个 或多个载波进行扫描。  The terminal scans the one or more carriers by using a radio frequency channel indicated in the radio frequency channel information.
3. 根据权利要求 1或 2所述的方法， 其特征在于， 所述扫描消息还包括以 下至少之一： 扫描开始时间、 扫描间隔、 扫描结果上报规则、 需要上报 的报告值类型、 扫描类型， 其中， 所述报告值类型包括以下至少之一： 载波千扰噪声比、 接收信号强度指示、 相对延迟、 往返时延； The method according to claim 1 or 2, wherein the scan message further comprises at least one of the following: a scan start time, a scan interval, a scan result report rule, a report value type to be reported, a scan type, The report value type includes at least one of the following: a carrier interference noise ratio, a received signal strength indication, a relative delay, and a round trip delay;
所述服务基站对所述终端指示需要扫描的每个基站中的载波所对 应的扫描类型， 其中， 所述扫描类型包括以下至少之一： 仅扫描、 无基 站协作的关联、 基站协作的关联、 网络协作的关联；  The serving base station indicates, to the terminal, a scan type corresponding to a carrier in each base station that needs to be scanned, where the scan type includes at least one of the following: only scanning, association without base station cooperation, association of base station cooperation, Association of network collaboration;
如果扫描类型为无基站协作的关联或基站协作的关联或网络协作 的关联， 则所述扫描消息还包括关联信息， 其中， 所述关联信息包括： 关联级别、 执行关联的时刻、 执行关联使用的专用测 巨码和专用测 巨资 源的信息。  The scan message further includes association information, where the scan type includes: association level, time of performing association, and execution association use, if the scan type is an association of the base station collaboration or the association of the base station collaboration or the association of the network collaboration. Information about special measurement giant code and special measurement giant resources.
4. 根据权利要求 3所述的方法， 其特征在于， 所述方法还包括： 所述终端 居所述关联信息， 在所述执行关联的时刻， 在所述专用 测距资源上向与所述终端进行关联的关联基站发送所述专用测距码； 当所述扫描类型为网络协作的关联时 ,所述关联基站通过骨千网向 所述艮务基站发送所述终端的测 巨结果， 其中， 所述测 巨结果包括： 所 述终端执行了网络协调关联的载波上的时间调整信息、 频率调整信息、 功率调整信息、 测距状态、 载波能够提供的服务； The method according to claim 3, wherein the method further comprises: the terminal locating the association information, and at the time of performing the association, on the dedicated ranging resource The associated base station that the terminal performs association sends the dedicated ranging code; when the scanning type is the association of the network cooperation, the associated base station sends the measurement result of the terminal to the service base station through the bone network, where The measurement result includes: the terminal performs time adjustment information, frequency adjustment information, power adjustment information, ranging status, and a service that the carrier can provide on the carrier that is associated with the network coordination;
9. 根据权利要求 1或 2所述的方法， 其特征在于， 所述终端需要扫描的一 个或多个载波选自预定载波， 其中， 所述预定载波包括以下至少之一： 所述服务基站下所述终端支持的且所述终端当前未使用的所有全配置载 波和所有部分配置载波中的部分或全部载波、 所述邻区基站的所有全配 置载波和部分配置载波中的部分或全部载波、 所述终端获知基站标识的 基站中的部分或全部载波。 The method according to claim 1 or 2, wherein the one or more carriers that the terminal needs to scan are selected from a predetermined carrier, where the predetermined carrier includes at least one of the following: All or all of the fully configured carriers and all of the partially configured carriers that are supported by the terminal and are not currently used by the terminal, all fully configured carriers of the neighboring base stations, and some or all of the carriers of the partially configured carriers, The terminal learns some or all of the carriers in the base station identified by the base station.
10. 根据权利要求 1或 2所述的方法， 其特征在于， 服务基站向其终端发送 扫描消息包括： The method according to claim 1 or 2, wherein the sending, by the serving base station, the scanning message to the terminal comprises:
所述服务基站通过所述终端的主载波将所述扫描消息发送给所述 终端。  The serving base station sends the scan message to the terminal by using a primary carrier of the terminal.
11. 根据权利要求 1或 2所述的方法， 其特征在于， 服务基站向其终端发送 扫描消息包括： The method according to claim 1 or 2, wherein the sending, by the serving base station, the scanning message to the terminal comprises:
所述终端向所述艮务基站发送扫描请求消息 ,所述艮务基站 居所 述扫描请求消息向所述终端发送所述扫描消息； 或者，  Sending, by the terminal, a scan request message to the service base station, where the service base station sends the scan message to the terminal according to the scan request message; or
所述艮务基站主动向所述终端发送所述扫描消息。  The service base station actively sends the scan message to the terminal.
12. 根据权利要求 11所述的方法， 其特征在于， 所述扫描请求消息包括以下 信息至少之一： 所述终端推荐用于扫描的射频通道标识信息、 终端推荐 扫描的一个或多个载波标识信息、 所述终端推荐的扫描间隔、 所述终端 推荐的非扫描间隔、 所述终端推荐的重复次数、 所述终端希推荐的扫描 类型。 The method according to claim 11, wherein the scan request message comprises at least one of the following: the radio channel identification information recommended by the terminal for scanning, and one or more carrier identifiers recommended by the terminal for scanning. The information, the scanning interval recommended by the terminal, the non-scanning interval recommended by the terminal, the number of repetitions recommended by the terminal, and the scanning type recommended by the terminal.
13. 根据权利要求 12所述的方法， 其特征在于， 所述终端推荐扫描的一个或 多个载波标识信息包括： The method according to claim 12, wherein the one or more carrier identification information that the terminal recommends to scan includes:
所述终端推荐扫描的基站比特图和 /或基站标识信息， 则所述终端 利用所述射频通道对所述一个或多个载波进行扫描包括： 所述终端对所 述基站比特图和 /或基站标识信息对应的基站的部分或全部载波进行扫 描； 和 /或，  The terminal recommends scanning the base station bitmap and/or the base station identification information, and the scanning, by the terminal, the one or more carriers by using the radio frequency channel, includes: the terminal to the base station bitmap and/or the base station Scanning part or all of the carriers of the base station corresponding to the identification information; and/or,
所述终端推荐扫描的基站比特图和 /或基站标识信息、 以及该基站 比特图和 /或基站标识信息对应的基站下需要扫描的载波标识信息， 则所 述终端利用所述射频通道对所述一个或多个载波进行扫描包括： 所述终 所述艮务基站将所述测 巨结果发送给所述终端。 根据权利要求 3所述的方法， 其特征在于， 扫描结束之后， 所述方法还 包括： The terminal recommends scanning the base station bitmap and/or the base station identification information, and the carrier identification information that needs to be scanned under the base station corresponding to the base station bitmap and/or the base station identification information, where the terminal uses the radio frequency channel to Scanning one or more carriers includes: The service base station sends the measurement result to the terminal. The method according to claim 3, wherein after the scanning ends, the method further comprises:
所述终端按照所述扫描结果上 4艮规则通过所述终端的主载波将扫 描结果发送给所述服务基站， 其中， 所述扫描结果包括： 报告模式、 报 告值类型和所述终端对所述一个或多个载波进行扫描后的测量结果； 所述艮务基站 居所述扫描结果为所述终端选择目标载波。 才艮据权利要求 1或 2所述的方法， 其特征在于， 在所述终端进行扫描的 射频通道与所述终端和所述服务基站通信所使用的射频通道为同一通道 的情况下， 所述扫描消息还包括非扫描间隔和重复次数。 根据权利要求 1或 2所述的方法， 其特征在于， 所述终端需要扫描的一 个或多个载波信息包括：  The terminal sends the scan result to the serving base station by using the primary carrier of the terminal according to the rule of the scan result, where the scan result includes: a report mode, a report value type, and the terminal pair The measurement result after the scanning is performed by the one or more carriers; the processing base station selects the target carrier for the terminal according to the scanning result. The method according to claim 1 or 2, wherein, in a case where the radio frequency channel scanned by the terminal is the same channel as the radio frequency channel used for communication between the terminal and the serving base station, The scan message also includes the non-scan interval and the number of repetitions. The method according to claim 1 or 2, wherein the one or more carrier information that the terminal needs to scan includes:
所述服务基站在所述扫描消息中携带的所述终端需要扫描的基站 比特图和 /或基站标识信息， 则所述终端利用所述射频通道对所述一个或 多个载波进行扫描包括： 所述终端对所述基站比特图和 /或基站标识信息 对应的基站的部分或全部载波进行扫描； 和 /或，  And scanning, by the serving base station, the base station bitmap and/or the base station identification information that the terminal needs to scan in the scanning message, where the terminal scanning the one or more carriers by using the radio frequency channel includes: The terminal scans part or all of the base stations corresponding to the base station bitmap and/or the base station identification information; and/or,
所述服务基站在所述扫描消息中携带的所述终端需要扫描的基站 比特图和 /或基站标识信息、以及该基站比特图和 /或基站标识信息对应的 基站下需要扫描的载波标识信息， 则所述终端利用所述射频通道对所述 一个或多个载波进行扫描包括： 所述终端对所述基站比特图和 /或基站标 识信息对应的基站下与所述载波标识信息对应的载波进行扫描。 根据权利要求 1或 2所述的方法， 其特征在于， 在服务基站向其终端发 送扫描消息之前还包括：  The base station bitmap and/or the base station identification information that the terminal needs to scan in the scan message, and the carrier identification information that needs to be scanned under the base station corresponding to the base station bitmap and/or the base station identification information, The scanning, by the terminal, the one or more carriers by using the radio frequency channel, includes: performing, by the terminal, a carrier corresponding to the carrier identification information in a base station corresponding to the base station bitmap and/or the base station identification information. scanning. The method according to claim 1 or 2, wherein before the serving base station sends the scan message to its terminal, the method further comprises:
所述终端通过服务基站发送的广播信息获取所述服务基站的载波 配置信息， 其中， 所述载波配置信息包括： 所述服务基站中的一个或多 个可用载波的物理频点信息和 /或载波标识信息、 每个可用载波的配置信 息； 获取所述服务基站分配给所述终端的载波集合信息；  The terminal acquires carrier configuration information of the serving base station by using broadcast information sent by the serving base station, where the carrier configuration information includes: physical frequency point information and/or carrier of one or more available carriers in the serving base station Identification information, configuration information of each available carrier; acquiring carrier set information allocated by the serving base station to the terminal;
所述终端通过邻区广播信息获取邻区基站的载波配置信息， 其中， 所述载波配置信息包括： 所述邻区基站中的一个或多个可用载波的物理 频点信息和 /或载波标识信息、 每个可用载波的配置信息。  The terminal acquires carrier configuration information of the neighboring base station by using the neighboring area broadcast information, where the carrier configuration information includes: physical frequency point information and/or carrier identification information of one or more available carriers in the neighboring base station , configuration information of each available carrier.
24 端对所述基站比特图和 /或基站标识信息对应的基站下与所述载波标识 信息对应的载波进行扫描。 根据权利要求 2所述的方法， 其特征在于， 所述方法还包括： twenty four The terminal scans the carrier corresponding to the carrier identification information under the base station corresponding to the base station bitmap and/or the base station identification information. The method according to claim 2, wherein the method further comprises:
服务基站和终端保存终端当前工作的射频通道与所述射频通道当 前工作的载波标识信息的映射关系。  The serving base station and the terminal store the mapping relationship between the radio channel currently working by the terminal and the carrier identification information of the current working channel of the radio channel.
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