WO2017054289A1 - 一种基于非授权频段的载波切换方法、基站和系统 - Google Patents

一种基于非授权频段的载波切换方法、基站和系统 Download PDF

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Publication number
WO2017054289A1
WO2017054289A1 PCT/CN2015/093541 CN2015093541W WO2017054289A1 WO 2017054289 A1 WO2017054289 A1 WO 2017054289A1 CN 2015093541 W CN2015093541 W CN 2015093541W WO 2017054289 A1 WO2017054289 A1 WO 2017054289A1
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WIPO (PCT)
Prior art keywords
carrier
base station
user equipment
working
target
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PCT/CN2015/093541
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English (en)
French (fr)
Inventor
乔粱
李明菊
张晨璐
朱亚军
张云飞
雷艺学
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宇龙计算机通信科技(深圳)有限公司
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Publication of WO2017054289A1 publication Critical patent/WO2017054289A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a carrier switching method, a base station, and a system for an unlicensed frequency band.
  • 3GPP 3rd Generation Partnership Project
  • 3GPP 3rd Generation Partnership Project
  • the uplink and downlink transmissions of the base station and the user do not need to consider whether there are base stations or users of the same carrier in the vicinity. If LTE is deployed on an unlicensed band, the DFS or dynamic carrier selection algorithm must be implemented, taking into account the highest priority of the radar system. In the traditional LTE system, there are no two mechanisms to avoid interference. In order to work better on unlicensed bands, LTE requires these two mechanisms, which is the drawback of existing technologies.
  • the traditional dynamic carrier selection algorithm is the measurement of the candidate frequency band/carrier generated by the base station after the measurement by the base station, and the appropriate carrier is selected for frequency hopping.
  • the disadvantage is that the user is not really considered.
  • the carrier selected by the base station may have a large interference from the user side. hopping along with the base station may reduce the user experience or even guarantee the quality of service.
  • a technical problem to be solved by the embodiments of the present invention is to provide a carrier switching method, a base station, and a communication system based on an unlicensed frequency band.
  • the problem of the degradation of service quality caused by carrier switching in the prior art can be solved.
  • an embodiment of the present invention provides a carrier switching method based on an unlicensed frequency band, including:
  • the first carrier set is obtained, where the first carrier set includes a carrier that is not strongly interfered by the base station side;
  • the base station sends a carrier measurement indication to the user equipment, where the carrier measurement indication is used to instruct the user equipment to perform a carrier measurement on the detected carrier to generate a measurement result, and return the measurement result to the base station;
  • the base station Determining, by the base station, the second set of carriers according to the measurement result, and the intersection of the first set of carriers and the second set of carriers to generate a carrier intersection; wherein the second set of carriers includes the user equipment side Carrier that is subject to strong interference;
  • the base station selects one carrier from the carrier intersection as a target carrier, and switches the working carrier to the target carrier.
  • generating the first carrier set according to the carrier that is not subjected to strong interference includes:
  • the base station determines the detected other carriers except the working carrier, and separately measures the RSSI of each carrier in the other carriers within a preset duration;
  • the first set of carriers is generated according to a carrier that is not subject to strong interference.
  • the determining, by the base station, the second carrier set according to the measurement result includes:
  • the switching the working carrier to the target carrier includes:
  • the working carrier is switched to the target carrier.
  • the sending, by the base station, the carrier measurement indication to the user equipment includes:
  • the base station sends a carrier measurement indication to the user equipment by using scheduling information or RRC signaling.
  • the method further includes:
  • the base station acquires a service level of the user equipment
  • the base station selects a target carrier from the second set of carriers
  • the base station selects a target carrier from the first set of carriers
  • the base station After determining the target carrier, the base station instructs the user equipment to switch the working carrier to the target carrier.
  • a second aspect of the embodiments of the present invention provides a base station, including:
  • a determining module configured to determine a first carrier set when the working carrier is interfered; wherein the first carrier set includes a carrier that is not strongly interfered by the base station side;
  • an indication module configured to send a carrier measurement indication to the user equipment, where the carrier measurement indication is used to indicate that the user equipment performs a carrier measurement on the detected carrier to generate a measurement result, and returns the measurement result to the base station;
  • a generating module configured to determine a second carrier set according to the measurement result, and take the first carrier set and the second carrier set to intersect to generate a carrier intersection; wherein the second carrier set includes the user equipment a carrier that is not subject to strong interference on the side;
  • a first switching module configured to select one carrier from the carrier intersection as a target carrier, and switch the working carrier to the target carrier.
  • the determining module specifically includes:
  • a first determining unit configured to measure that an RSSI of the working carrier is greater than a preset first time in a preset duration When the threshold is used, it is determined that the working carrier is strongly interfered with;
  • a measuring unit configured to determine the detected other carriers except the working carrier, and separately measure RSSI of each carrier in the other carriers within a preset duration
  • a second determining unit configured to: when the measured RSSI is not greater than the first threshold, determine that the corresponding carrier is not subjected to strong interference;
  • a generating unit configured to generate the first carrier set according to a carrier that is not subjected to strong interference.
  • the generating module is configured to:
  • the first switching module is used to:
  • the working carrier is switched to the target carrier.
  • the indication module is used to:
  • the carrier measurement indication is sent to the user equipment by scheduling information or RRC signaling.
  • the method further includes:
  • a second switching module configured to acquire a service level of the user equipment if the carrier intersection is empty
  • a third aspect of the embodiments of the present invention provides a communication system, including a base station and a user equipment.
  • the base station is configured to: when the working carrier is interfered, acquire the first carrier set; where the first carrier set is a carrier that is not strongly interfered by the base station side;
  • the user equipment is configured to receive the carrier measurement indication
  • the base station When determining that the working carrier is strongly interfered, acquires a carrier that is not strongly interfered by the base station side and a carrier that is not strongly interfered with the carrier on the terminal side, and selects a target carrier from the coincident carrier to perform handover, so that the selected carrier simultaneously satisfies Uplink and downlink transmission requirements, thereby improving the quality of service of user equipment.
  • FIG. 1 is a schematic flowchart of a carrier switching method based on an unlicensed frequency band according to an embodiment of the present invention
  • FIG. 2 is another schematic flowchart of a carrier switching method based on an unlicensed frequency band according to an embodiment of the present invention
  • FIG. 3 is a flow chart of interaction of a communication system according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 5 is another schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 1 is a schematic flowchart of a carrier switching method based on an unlicensed frequency band according to an embodiment of the present invention.
  • the method includes:
  • the base station determines, when the working carrier is interfered, acquires a first carrier set, where the first carrier set includes a carrier that is not strongly interfered by the base station side.
  • the working carrier is a carrier of an unlicensed frequency band
  • the carrier of the unlicensed frequency band becomes a working carrier
  • the user terminal in the base station and the associated cell uses the working carrier to transmit Business data or signaling data.
  • the base station finds that the working carrier is strongly interfered and cannot be used normally.
  • the base station acquires the first carrier set, and the first carrier set includes the carrier that is not strongly interfered by the base station side, and the base station acquires the first carrier.
  • the aggregation method may be: the base station determines a plurality of carriers that can be used, and performs measurement of each carrier of the plurality of carriers except the working carrier, and obtains RSSI (Received Signal Strength Indication, RSSI for short) of each carrier. If the RSSI is less than the preset threshold, it indicates that the carrier is not strongly interfered. If the RSSI is greater than or equal to the preset threshold, the carrier is strongly interfered.
  • the preset threshold value can be set as needed, and the present invention is not limited. In the LTE communication system, the preset threshold value is typically -62 dBm. Among them, the carrier can be determined according to the bandwidth and the frequency point.
  • the base station sends a carrier measurement indication to the user equipment, where the carrier measurement indication is used to instruct the user equipment to perform a carrier measurement generation measurement result on the detected carrier, and return the measurement result to the base station.
  • the user equipment is located in a cell to which the base station belongs, and the user equipment is in a connected state, the base station sends a carrier measurement indication to the user equipment, and the user equipment receives the carrier measurement indication, and performs carrier measurement on the detected carrier, where the carrier measurement includes detection.
  • the RSSI, the RSRQ, or the RSRQ of the carrier is measured to enable the base station to evaluate the quality of service of the carrier detected by the user equipment.
  • the user equipment After the carrier measurement is completed, the user equipment returns the measurement result to the base station and notifies the base station to detect the carrier.
  • the carrier measurement indication may be transmitted through a carrier of an unlicensed band or a carrier of a licensed band, which is not limited in the present invention.
  • the base station determines a second carrier set according to the measurement result, and generates a carrier intersection by using the first carrier set and the second carrier set, where the second carrier set is the The carrier on the device side is not subject to strong interference.
  • the base station determines, according to the measurement result returned by the user equipment, a carrier that is not strongly interfered by the user equipment side, generates a second carrier set according to the carrier that is not subjected to strong interference, and de-interleaves the first carrier set and the second carrier set to generate a carrier.
  • the carrier intersection includes carriers that are located in both the first carrier set and the second carrier set
  • the base station selects one carrier from the carrier intersection as a target carrier, and switches the working carrier to the target carrier.
  • the base station carries the broadcast frequency hopping instruction of the target carrier identifier in the cell, and after receiving the frequency hopping command, the user terminal switches the current working carrier to the target carrier according to the time indicated by the frequency hopping instruction.
  • the base station when determining that the working carrier is strongly interfered, acquires a carrier that is not subjected to strong interference on the base station side and a carrier that is not in the carrier that is not strongly interfered on the terminal side, and selects a target carrier to switch from the coincident carrier.
  • the carrier thus selected satisfies both uplink and downlink transmission requirements, thereby improving the quality of service of the user equipment.
  • FIG. 2 is a schematic diagram of a carrier switching method based on an unlicensed frequency band according to an embodiment of the present invention.
  • the method includes:
  • the base station determines that the working carrier is subjected to strong interference when the RSSI of the working carrier is greater than a preset first threshold.
  • the working carrier is a carrier of an unlicensed frequency band
  • the current carrier of the user equipment of the base station and the cell to which the cell belongs is a working carrier
  • the base station acquires the usage right of the working carrier by using a working carrier, and transmits service data or signaling data by using the working carrier
  • the working carrier that the base station contends for the unlicensed frequency band can obtain other modes by using the CCA method, which is not limited by the present invention.
  • the base station detects that the working carrier is strongly interfered with the working carrier transmitting data in the unlicensed frequency band and the data cannot be transmitted normally, the base station needs to perform carrier switching.
  • the method for determining that the working carrier is strongly interfered by the base station may be: the base station measures the RSSI of the working carrier multiple times within a preset duration, and averages the RSSI measured multiple times as the RSSI of the working carrier, and calculates the RSSI and the calculated RSSI. The preset first threshold is compared. If it is greater than the first threshold, the working carrier is strongly interfered.
  • the base station determines the detected other carriers except the working carrier, and separately measures RSSI of each carrier in the other carriers within a preset duration.
  • the unlicensed frequency band is divided into multiple carriers in advance according to the frequency range of the unlicensed frequency band and the bandwidth of the working carrier, and the base station can obtain the middle of the divided multiple carriers by using a competitive manner.
  • the right to use one carrier the working carrier is one of the divided multiple carriers, and the base station detected by the base station is divided into multiple carriers.
  • the base station measures the RSSI of each carrier in the other carriers within a preset duration.
  • the carrier detected by the base station is carrier 1, carrier 2, carrier 3, and carrier 4, where carrier 1 is the current working carrier, and when the base station determines that carrier 1 is strongly interfered, the carrier 2 measures carriers other than carrier 1.
  • the RSSI of carrier 3 and carrier 4 within a preset duration may be measured by taking an average after performing multiple measurements within a preset duration.
  • the carrier corresponding to the RSSI is not subjected to strong interference and can be used for normal data transmission.
  • the base station may perform uplink or descending ordering of carriers in the first carrier set according to the RSSI.
  • each carrier can be represented by frequency and bandwidth.
  • the base station sends a carrier measurement indication to the user equipment, where the carrier measurement indication is used to instruct the user equipment to perform a carrier measurement on the detected carrier to generate a measurement result, and return the measurement result to the base station.
  • the carrier measurement indication may be carried by using RRC signaling or scheduling information of the UE-specific search space, or other messages, which are not limited by the present invention.
  • the carrier measurement indication is used to indicate that the user equipment performs carrier measurement on the detected carrier, for example, measuring the RSSI of each carrier within a preset duration.
  • the measurement method of the RSSI is the same as that of the base station side, and the detected carrier user equipment is currently The carrier of the unlicensed band that can be used in the location.
  • the user equipment After the measurement is completed, the user equipment returns the measurement result to the base station. For example: the corresponding frequency, bandwidth and RSSI of the detected carriers.
  • the base station acquires an RSSI of each carrier in the detected carrier carried in the measurement result.
  • the base station determines, according to the measurement result, the RSSI corresponding to the carrier detected by the user equipment and the detected carrier.
  • the base station filters out the carrier whose RSSI is smaller than the preset second threshold in each carrier detected by the user equipment, and the RSSI is smaller than the second threshold, indicating that the carrier is not strongly interfered with the user equipment.
  • the base station may perform the ascending or descending ordering of the carriers in the second carrier set according to the RSSI.
  • the carrier detected by the user equipment is carrier 2, carrier 3, and carrier 4.
  • the base station filters out carriers that are not strongly interfered with carrier 3 and carrier 4, and the base station adds carrier 3 and carrier 4 to the second carrier set.
  • the first carrier set and the second carrier set are taken as an intersection to generate a carrier intersection.
  • the carrier in the carrier intersection is a carrier shared by the first carrier set and the second carrier set.
  • the first carrier set includes carrier 2, carrier 3, and carrier 4.
  • the second carrier set includes carrier 3 and carrier 4.
  • the carrier intersection generated by the base station after the intersection of the first carrier set and the second carrier set includes carrier 3 and Carrier 4.
  • the carrier intersection is empty, indicating that there is no carrier, that is, the first carrier set and the second carrier set do not have a common carrier. If the carrier intersection is empty, S212 is performed; otherwise, S211 is performed.
  • the base station selects one carrier from the carrier intersection as a target carrier, and switches the working carrier to the target carrier.
  • the base station may select a carrier with the smallest RSSI or any one carrier as the target carrier from the carrier intersection, and broadcast a frequency hopping indication carrying the frequency and bandwidth of the target carrier to the cell to indicate that the user equipment will work together at the specified time.
  • the carrier is switched to the target carrier.
  • the base station after determining the target carrier, the base station detects that the duration of the target carrier is an idle state exceeds a preset value, and then switches the current working carrier to the target carrier.
  • the service level indicates the priority of the service.
  • the higher the service level indicates the higher the priority of the service.
  • the service level of the voice service is higher than that of the data service.
  • the base station selects a target carrier from the second set of carriers.
  • the base station selects a target carrier from the first carrier set.
  • the base station instructs the user equipment to switch the working carrier to a target carrier.
  • the base station After determining the target carrier, the base station continues to determine whether the base station corresponding to the target carrier and the base station corresponding to the working carrier belong to the same carrier. If yes, the base station instructs the user equipment to hop together to the target carrier.
  • the base station when determining that the working carrier is strongly interfered, acquires a carrier that is not subjected to strong interference on the base station side and a carrier that is not in the carrier that is not strongly interfered on the terminal side, and selects a target carrier to switch from the coincident carrier.
  • the carrier thus selected satisfies both uplink and downlink transmission requirements, thereby improving the quality of service of the user equipment.
  • FIG. 3 is a schematic diagram of interaction of a communication system according to an embodiment of the present invention.
  • the communication system includes a base station and a user equipment, where the interaction process between the base station and the user equipment is as follows:
  • the base station determines that the working carrier is strongly interfered, and performs carrier measurement on other carriers except the working carrier.
  • the RSSI on the working carrier is measured multiple times within a preset duration, and the RSSI of the multiple measurements is averaged as the RSSI of the working carrier.
  • the work is determined.
  • the carrier is subjected to strong interference, and multiple carriers supported by the base station are acquired, and carriers other than the working carrier of the plurality of carriers are subjected to carrier measurement to obtain RSSI of each carrier.
  • the base station filters out carriers of other carriers whose RSSI is less than a preset first threshold, and generates a first carrier set according to the filtered carrier.
  • the first carrier set includes a carrier whose RSSI is smaller than the first threshold.
  • the base station sends a carrier measurement indication to the user equipment.
  • the user equipment determines the detected carrier according to the carrier measurement indication.
  • the user equipment measurement determines an RSSI of the detected carrier.
  • the user equipment returns, to the base station, the identifier of the detected carrier and the RSSI corresponding to each carrier.
  • the base station selects a carrier in which the RSSI of the detected carrier is smaller than a preset second threshold, and generates a second carrier set according to the filtered carrier.
  • the base station de-interleaves the first carrier set and the second carrier set to generate a carrier set.
  • the base station selects one target carrier from the carrier intersection.
  • the base station determines that the duration of the target carrier is not occupied reaches a preset value.
  • the base station determines that the duration of the target carrier is an idle state reaches a preset value.
  • the base station sends a carrier switching indication to the user equipment.
  • the base station and the user equipment are switched from the working carrier to the target carrier.
  • the base station when determining that the working carrier is strongly interfered, acquires a carrier that is not subjected to strong interference on the base station side and a carrier that is not in the carrier that is not strongly interfered on the terminal side, and selects a target carrier to switch from the coincident carrier.
  • the carrier thus selected satisfies both uplink and downlink transmission requirements, thereby improving the quality of service of the user equipment.
  • FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station includes a determining module 401, an indicating module 402, a generating module 403, and a first switching module 404.
  • the determining module 401 is configured to obtain a first carrier set when the working carrier is interfered, where the first carrier set includes a carrier that is not strongly interfered by the base station side.
  • the indication module 402 is configured to send a carrier measurement indication to the user equipment, where the carrier measurement indication is used to instruct the user equipment to perform a carrier measurement on the detected carrier to generate a measurement result, and return the measurement result to the base station.
  • a generating module 403 configured to determine a second carrier set according to the measurement result, and take the first carrier set and the second carrier set to intersect to generate a carrier intersection; wherein the second carrier set includes the user Carriers on the device side that are not subject to strong interference.
  • a first switching module configured to select one carrier from the carrier intersection as a target carrier, and switch the working carrier to the target carrier.
  • the determining module specifically includes:
  • a first determining unit configured to determine that the working carrier is strongly interfered when the RSSI of the working carrier is greater than a preset first threshold in a preset duration
  • a measuring unit configured to determine the detected other carriers except the working carrier, and separately measure RSSI of each carrier in the other carriers within a preset duration
  • a second determining unit configured to: when the measured RSSI is not greater than the first threshold, determine that the corresponding carrier is not subjected to strong interference;
  • a generating unit configured to generate the first carrier set according to a carrier that is not subjected to strong interference.
  • the generating module is configured to:
  • the first switching module is used to:
  • the working carrier is switched to the target carrier.
  • the indication module is used to:
  • the carrier measurement indication is sent to the user equipment by scheduling information or RRC signaling.
  • the base station further includes:
  • a second switching module configured to acquire a service level of the user equipment if the carrier intersection is empty
  • the base station selects a target carrier from the second set of carriers
  • the base station selects a target carrier from the first set of carriers
  • the base station After determining the target carrier, the base station instructs the user equipment to switch the working carrier to the target carrier.
  • FIG. 5 is a schematic diagram of another structure of a base station according to an embodiment of the present invention.
  • a base station is configured to implement a carrier switching method based on an unlicensed frequency band, and the base station includes a processor 501 and a memory 502.
  • the communication interface 503, the number of the processors 501 in the base station may be one or more, and FIG. 5 takes a processor as an example.
  • the processor 501, the memory 502, and the communication interface 503 may be connected by a bus or other means, and the bus connection is taken as an example in FIG.
  • the memory 502 stores a set of program codes
  • the processor 501 is configured to call the program code stored in the memory 502 for performing the following operations:
  • the first carrier set includes a carrier that is not strongly interfered by the base station side;
  • generating the first carrier set according to the carrier that is not subjected to the strong interference includes:
  • the first set of carriers is generated according to a carrier that is not subject to strong interference.
  • the performing, by the processor 501, determining, according to the measurement result, the second carrier set includes:
  • the performing, by the processor 501, the switching the working carrier to the target carrier comprises:
  • the working carrier is switched to the target carrier.
  • the performing, by the processor 501, the sending, to the user equipment, the carrier measurement indication includes:
  • the carrier measurement indication is sent to the user equipment by scheduling information or RRC signaling.
  • the processor 501 is further configured to:
  • the base station acquires a service level of the user equipment
  • the base station selects a target carrier from the second set of carriers
  • the base station selects a target carrier from the first set of carriers
  • the base station After determining the target carrier, the base station instructs the user equipment to switch the working carrier to the target carrier.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

提供一种基于非授权频段的载波切换方法、基站和通信系统。该方法包括：基站确定工作载波受干扰时，获取第一载波集合；其中，第一载波集合包含基站侧未受到强干扰的载波（S101）；所述基站向用户设备发送载波测量指示，载波测量指示用于指示用户设备对探测到的载波进行载波测量生成测量结果，并向所述基站返回测量结果（S102）；所述基站根据测量结果确定第二载波集合，以及将第一载波集合和第二载波集合取交集生成载波交集；其中，第二载波集合包含用户设备侧未受到强干扰的载波（S103）；所述基站从载波交集中选择一个载波作为目标载波，并将工作载波切换为目标载波（S104）。采用本发明，能在载波切换后保证业务的服务质量和业务连续性。

Description

一种基于非授权频段的载波切换方法、基站和系统 技术领域
本发明涉及无线通信领域，尤其涉及一种非授权频段的载波切换方法、基站和系统。
背景技术
随着通信业务量的急剧增加，3GPP(3rd Generation Partnership Project，第三代合作伙伴计划，简称3GPP)授权频谱显得越来越不足以提供更高的网络容量。为了进一步提高频谱资源的利用，3GPP正讨论如何在授权频谱的帮助下使用未授权频谱，如2.4GHz和5GHz频段。这些未授权频谱目前主要是Wi-Fi(Wireless-Fidelity，无线保真，简称Wi-Fi)，蓝牙，雷达，医疗等系统在使用。载波聚合功能让将LTE(Long Term Evolution，长期演进，简称LTE)部署于非授权频段变为可能。3GPP提出了LAA(Licensed Assisted Access，辅助授权接入，简称LAA)的概念，借助LTE授权频谱的帮助来使用未授权频谱。鉴于免授权频段上存在包括Wi-Fi、蓝牙等其它接入设备，一种用于避免雷达机制，DFS(Dynamic Frequency Selection，动态频谱选择，简称DFS)被提出。
LTE网络中由于有很好的正交性保证了干扰水平，所以基站与用户的上下行传输不用考虑周围是否有同一运营商的基站或用户在进行传输。而如果将LTE部署在非授权频段上，考虑到雷达系统的最高优先级，必须执行DFS或者动态载波选择算法。而传统的LTE系统中没有这两种机制来避免干扰。为了更好的在非授权频段上工作，LTE需要这两种机制，这就是现存技术的缺陷所在。
同时，传统的动态载波选择算法，都是基站测量之后，用户从基站测量产生的候选频段/载波中再进行测量，选出合适的载波进行跳频，这样存在的缺点在于，没有真正考虑到用户体验，因为基站与用户所处位置不同，基站选出的载波从用户端来说，可能干扰较大，跟随基站一起跳频可能会降低用户体验，甚至无法保障服务质量。
发明内容
本发明实施例所要解决的技术问题在于，提供一种基于非授权频段的载波切换方法、基站和通信系统。可解决现有技术中载波切换造成的业务服务质量下降的问题。
为了解决上述技术问题，本发明实施例提供了一种基于非授权频段的载波切换方法，包括：
基站确定工作载波受干扰时，获取第一载波集合；其中，所述第一载波集合包含基站侧未受到强干扰的载波；
所述基站向用户设备发送载波测量指示，所述载波测量指示用于指示所述用户设备对探测到的载波进行载波测量生成测量结果，并向所述基站返回所述测量结果；
所述基站根据所述测量结果确定第二载波集合，以及将所述第一载波集合和所述第二载波集合取交集生成载波交集；其中，所述第二载波集合包含所述用户设备侧未受到强干扰的载波；
所述基站从所述载波交集中选择一个载波作为目标载波，并将所述工作载波切换为所述目标载波。
结合第一方面，在第一种可能的实现方式中，所述基站确定工作载波收到干扰时，根据未受到强干扰的载波生成第一载波集合包括：
所述基站测量预设时长内所述工作载波的RSSI大于预设的第一门限值时，确定所述工作载波受到强干扰；
所述基站确定探测到的除所述工作载波之外的其他载波，并在预设时长内分别测量所述其他载波中各个载波的RSSI；
当测量到的RSSI不大于所述第一门限值时，确定对应的载波未受到强干扰；
根据未受到强干扰的载波生成所述第一载波集合。
结合第一方面的第一种可能的实现方式，在第二种可能的实现方式中，所述基站根据所述测量结果确定第二载波集合包括：
所述基站获取所述测量结果中携带的所述探测到的载波中各个载波的RSSI；
当RSSI小于预设的第二门限值，确定对应的载波未受到强干扰；
根据所述用户设备探测到的载波中未受到强干扰的载波生成所述第二载波集合。
结合第一方面，在第三种可能的实现方式中，所述将所述工作载波切换为所述目标载波包括：
当所述目标载波未被占用的时长超过预设值时，将所述工作载波切换为所述目标载波。
结合第一方面，在第四种可能的实现方式中，所述基站向用户设备发送载波测量指示包括：
所述基站通过调度信息或RRC信令向用户设备发送载波测量指示。
结合第一方面至第一方面的第四种可能的实现方式中的任意一种，在第五种可能的实现方式中，还包括：
如果所述载波交集为空，所述基站获取所述用户设备的业务等级；
判断所述用户设备的业务等级是否大于预设等级；
若为是，所述基站从所述第二载波集合中选择目标载波；
若为否，所述基站从所述第一载波集合中选择目标载波；
在确定目标载波之后，所述基站指示所述用户设备将所述工作载波切换为所述目标载波。
本发明实施例第二方面提供了一种基站，包括：
确定模块，用于确定工作载波受干扰时，获取第一载波集合；其中，所述第一载波集合包含基站侧未受到强干扰的载波；
指示模块，用于向用户设备发送载波测量指示，所述载波测量指示用于指示所述用户设备对探测到的载波进行载波测量生成测量结果，并向所述基站返回所述测量结果；
生成模块，用于根据所述测量结果确定第二载波集合，以及将所述第一载波集合和所述第二载波集合取交集生成载波交集；其中，所述第二载波集合包含所述用户设备侧未受到强干扰的载波；
第一切换模块，用于从所述载波交集中选择一个载波作为目标载波，并将所述工作载波切换为所述目标载波。
结合第二方面，在第一种可能的实现方式中，所述确定模块具体包括：
第一确定单元，用于测量预设时长内所述工作载波的RSSI大于预设的第一 门限值时，确定所述工作载波受到强干扰；
测量单元，用于确定探测到的除所述工作载波之外的其他载波，并在预设时长内分别测量所述其他载波中各个载波的RSSI；
第二确定单元，用于当测量到的RSSI不大于所述第一门限值时，确定对应的载波未受到强干扰；
生成单元，用于根据未受到强干扰的载波生成所述第一载波集合。
结合第二方面，在第二种可能的实现方式中，所述生成模块用于：
获取所述测量结果中携带的所述探测到的载波中各个载波的RSSI；
当RSSI小于预设的第二门限值，确定对应的载波未受到强干扰；
根据所述用户设备探测到的载波中未受到强干扰的载波生成所述第二载波集合。
结合第二方面，在第三种可能的实现方式中，所述将所述第一切换模块用于：
当所述目标载波未被占用的时长超过预设值时，将所述工作载波切换为所述目标载波。
结合第二方面，在第四种可能的实现方式中，所述指示模块用于：
通过调度信息或RRC信令向用户设备发送载波测量指示。
结合第二方面至第二方面的第四种可能的实现方式中的任意一种，在第五种可能的实现方式中，还包括：
第二切换模块，用于如果所述载波交集为空，所述基站获取所述用户设备的业务等级；
判断所述用户设备的业务等级是否大于预设等级；
若为是，从所述第二载波集合中选择目标载波；
若为否，从所述第一载波集合中选择目标载波；
在确定目标载波之后，指示所述用户设备将所述工作载波切换为所述目标载波。
本发明实施例第三方面提供了一种通信系统，包括基站和用户设备，
所述基站用于确定工作载波受干扰时，获取第一载波集合；其中，所述第一载波集合为基站侧未受到强干扰的载波；
向所述用户设备发送载波测量指示；
根据所述测量结果确定第二载波集合，以及将所述第一载波集合和所述第二载波集合生成载波交集；其中，所述第二载波集合为所述用户设备侧未受到强干扰的载波
从所述载波交集中选择一个载波作为目标载波，并将所述工作载波切换为所述目标载波；
所述用户设备用于接收所述载波测量指示；
根据所述载波测量指示对探测到的载波进行策略生成测量结果，向所述基站返回所述测量结果。
实施本发明实施例，具有如下有益效果：
基站在确定工作载波受到强干扰时，获取基站侧未受到强干扰的载波和终端侧未受到强干扰的载波中重合的载波，从重合的载波中选择目标载波进行切换，这样选择的载波同时满足上行和下行的传输要求，从而提高用户设备的服务质量。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的一种基于非授权频段的载波切换方法的流程示意图；
图2是本发明实施例提供的一种基于非授权频段的载波切换方法的另一流程示意图；
图3是本发明实施例提供的一种通信系统的交互流程图；
图4是本发明实施例提供的一种基站的结构示意图；
图5是本发明实施例提供的一种基站的另一结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是 全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
参见图1，为本发明实施例提供的一种基于非授权频段的载波切换方法的流程示意图，在本发明实施例中，所述方法包括：
S101、基站确定工作载波受干扰时，获取第一载波集合；其中，所述第一载波集合包含基站侧未受到强干扰的载波。
具体的，工作载波为非授权频段的载波，基站通过竞争的方式获得非授权频段的载波的使用权后，该非授权频段的载波成为工作载波，基站和所属小区内的用户终端使用工作载波传输业务数据或信令数据。基站在使用工作载波传输数据的过程中，发现工作载波受到强干扰，无法正常使用时，基站获取第一载波集合，第一载波集合中包含基站侧未受到强干扰的载波，基站获取第一载波集合的方法可以是：基站确定可使用的多个载波，测量多个载波中除工作载波的各个载波执行载波测量，获得各个载波的RSSI(Received Signal Strength Indication，接收信号强度指示，简称RSSI)，如果RSSI小于预设的门限值，表明载波未受到强干扰，如果RSSI大于或等于预设的门限值，表明载波受到强干扰。其中，预设的门限值可以根据需要进行设置，本发明不作限制，在LTE通信系统中，预设的门限值的典型值为-62dBm。其中，载波可以根据带宽和频点来确定。
S102、所述基站向用户设备发送载波测量指示，所述载波测量指示用于指示所述用户设备测量对探测到的载波进行载波测量生成测量结果，并向所述基站返回所述测量结果。
具体的，用户设备位于基站所属的小区内，且用户设备为连接态，基站向用户设备发送载波测量指示，用户设备接收载波测量指示，对探测到的载波进行载波测量，其中，载波测量包括探测到的载波的RSSI、RSRQ或RSRQ等进行测量，以使基站评估用户设备侧探测到的载波的服务质量，完成载波测量后，用户设备向基站返回测量结果以及通知基站自身探测到的载波。
其中，载波测量指示可以通过非授权频段的载波或授权频段的载波进行传输，本发明不作限制。
S103、所述基站根据所述测量结果确定第二载波集合，以及将所述第一载波集合和所述第二载波集合生成载波交集；其中，所述第二载波集合为所述用 户设备侧未受到强干扰的载波。
具体的，基站根据用户设备返回的测量结果，确定用户设备侧未受到强干扰的载波，根据未受到强干扰的载波生成第二载波集合，将第一载波集合和第二载波集合去交集生成载波交集，载波交集中包含同时位于第一载波集合和第二载波集合中的载波
S104、所述基站从所述载波交集中选择一个载波作为目标载波，并将所述工作载波切换为所述目标载波。
其中，基站在小区内携带目标载波标识的广播跳频指令，用户终端接收到跳频指令后，根据跳频指令指示的时间将当前的工作载波切换为目标载波。
实施本发明的实施例，基站在确定工作载波受到强干扰时，获取基站侧未受到强干扰的载波和终端侧未受到强干扰的载波中重合的载波，从重合的载波中选择目标载波进行切换，这样选择的载波同时满足上行和下行的传输要求，从而提高用户设备的服务质量。
参见图2，为本发明实施例提供的一种基于非授权频段的载波切换方法，在本发明实施例中，所述方法包括：
S201、基站测量预设时长内所述工作载波的RSSI大于预设的第一门限值时，确定所述工作载波受到强干扰。
具体的，工作载波为非授权频段的载波，基站和所属小区的用户设备当前的载波为工作载波，基站通过竞争的方式获取工作载波的使用权，通过工作载波传输业务数据或信令数据，其中，基站竞争非授权频段的工作载波可以采用CCA的方式获取其他方式，本发明不作限制。基站在使用非授权频段的工作载波传输数据的过程中发现工作载波受到强干扰而导致无法正常传输数据时，基站需要进行载波切换。基站确定工作载波受到强干扰的方法可以是：基站在预设的时长内多次测量工作载波上的RSSI，将多次测量到的RSSI取平均值作为工作载波的RSSI，将计算得到的RSSI和预设的第一门限值进行比较，如果大于第一门下值，表明工作载波受到强干扰。
S202、所述基站确定探测到的除所述工作载波之外的其他载波，并在预设时长内分别测量所述其他载波中各个载波的RSSI。
具体的，根据规定的非授权频段的频率范围和工作载波的带宽预先将非授权频段划分为多个载波，基站可以通过竞争的方式获取划分的多个载波的中任 意一个载波的使用权，工作载波即为划分的多个载波中的一个，基站探测到的基站为划分的多个载波。基站在确定工作载波受到强干扰时，分别在预设的时长内测量其他载波中各个载波的RSSI。
举例说明，基站探测到的载波为载波1、载波2、载波3和载波4，其中载波1为当前的工作载波，基站在确定载波1受到强干扰时，测量除载波1之外的载波2、载波3和载波4在预设时长内的RSSI，测量的方式可以是：在预设时长内进行多次测量后取平均值。
S203、当测量到的RSSI不大于所述第一门限值时，确定对应的载波未受到强干扰。
具体的，RSSI不大于第一门限值时，对于基站而言，RSSI对应的载波未受到强干扰，可以用来正常传输数据。
S204、根据未受到强干扰的载波生成第一载波集合。其中，基站可以根据RSSI对第一载波集合中的载波进行升序排列或降序排列。
例如，载波2、载波3和载波4的RSSI均不大于第一门限值，基站将载波2、载波3和载波4添加到第一载波集合。其中，各个载波可以通过频点和带宽来表示。
S205、所述基站向用户设备发送载波测量指示，所述载波测量指示用于指示所述用户设备对探测到的载波进行载波测量生成测量结果，并向所述基站返回所述测量结果。
具体的，载波测量指示可以通过RRC信令或UE-specific search space的调度信息来承载或其他消息来承载，本发明不作限制。载波测量指示用于指示用户设备对探测到的载波进行载波测量，例如：测量各个载波在预设时长内的RSSI，RSSI的测量方法与基站侧的测量方法相同，探测到的载波用户设备在当前位置可以使用的非授权频段的载波，测量完成后，用户设备向基站返回测量结果。例如：探测到的载波各自对应的频点、带宽和RSSI。
S206、所述基站获取所述测量结果中携带的所述探测到的载波中各个载波的RSSI。
具体的，基站根据测量结果确定用户设备探测到的载波和探测到的载波各自对应的RSSI。
S207、当RSSI小于预设的第二门限值，确定对应的载波未受到强干扰。
具体的，基站筛选出用户设备探测到的各个载波中RSSI小于预设的第二门限值的载波，RSSI小于第二门限值，表明对用于用户设备而言载波未受到强干扰。
S208、根据所述用户设备探测到的载波中未受到强干扰的载波生成第二载波集合。其中，基站可以根据RSSI对第二载波集合中的载波进行升序或降序排列。
例如，用户设备探测到的载波为载波2、载波3和载波4，其中基站筛选出未受到强干扰的载波为载波3和载波4，基站将载波3和载波4添加到第二载波集合中。
S209、将所述第一载波集合和所述第二载波集合取交集生成载波交集。
具体的，载波交集中的载波为第一载波集合和第二载波集合中共有的载波。例如，第一载波集合包含载波2、载波3和载波4，第二载波集合包含载波3和载波4，则基站对第一载波集合和第二载波集合取交集后生成的载波交集包含载波3和载波4。
S210、所述载波交集是否为空。
具体的，载波交集为空表示没有任何载波，即第一载波集合和第二载波集合没有共同的载波，如果载波交集为空，执行S212；否则，执行S211。
S211、所述基站从所述载波交集中选择一个载波作为目标载波，并将所述工作载波切换为所述目标载波。
其中，基站可以从载波交集中选择RSSI最小的载波或任意一个载波作为目标载波，并向小区中广播携带目标载波的频点和带宽的跳频指示，以指示用户设备在指定的时刻一起将工作载波切换为目标载波。
可选的，基站在确定目标载波后，检测目标载波为空闲状态的时长超过预设值后，将当前的工作载波切换到目标载波。
S212、获取所述用户设备的业务等级。
其中，业务等级表示业务的优先级，业务等级越高表示业务的优先级越高，例如语音业务的业务等级高于数据业务。
S213、所述业务等级是否大于预设等级。
具体的，判断用户设备的业务等级是否大于预设等级，若为是，执行S214，否则执行S215。
S214、所述基站从所述第二载波集合中选择目标载波。
S215、所述基站从所述第一载波集合中选择目标载波。
S216、所述基站指示所述用户设备将所述工作载波切换为目标载波。
其中，基站在确定目标载波之后，继续判断目标载波对应的基站和工作载波对应的基站是否属于同一运营商，如果为是，基站指示用户设备一起跳频到目标载波上。
实施本发明的实施例，基站在确定工作载波受到强干扰时，获取基站侧未受到强干扰的载波和终端侧未受到强干扰的载波中重合的载波，从重合的载波中选择目标载波进行切换，这样选择的载波同时满足上行和下行的传输要求，从而提高用户设备的服务质量。
参见图3，为本发明实施例提供的一种通信系统的交互示意图，在本发明实施例中，所述通信系统包括基站和用户设备，其中，基站和用户设备之间的交互流程如下：
S301、基站确定工作载波受到强干扰，对除工作载波之外的其他载波进行载波测量。
其中，在预设时长内多次测量工作载波上的RSSI，将多次测量的RSSI去平均值后作为工作载波的RSSI，当计算得到的RSSI大于预设的第一门限值时，确定工作载波受到强干扰，获取基站支持的多个载波，对多个载波中除工作载波之外的其他载波进行载波测量，以获得各个载波的RSSI。
S302、基站筛选出其他载波中RSSI小于预设的第一门限值的载波，根据筛选后的载波生成第一载波集合。
其中，第一载波集合包含RSSI小于第一门限值的载波。
S303、基站向用户设备发送载波测量指示。
S304、用户设备根据载波测量指示确定探测到的载波。
S305、用户设备测量确定探测到的载波的RSSI。
S306、用户设备向基站返回探测到的载波的标识和各个载波对应的RSSI。
S307、基站筛选出探测到的载波中RSSI小于预设的第二门限值的载波，根据筛选后的载波生成第二载波集合。
S308、基站对第一载波集合和第二载波集合去交集生成载波集合。
S309、基站从载波交集中选择一个目标载波。
S310、基站判断目标载波未被占用的时长达到预设值。
其中，基站确定目标载波为空闲状态的时长达到预设值。
S311、基站向用户设备发送载波切换指示。
S312、基站和用户设备从工作载波切换到目标载波。
实施本发明的实施例，基站在确定工作载波受到强干扰时，获取基站侧未受到强干扰的载波和终端侧未受到强干扰的载波中重合的载波，从重合的载波中选择目标载波进行切换，这样选择的载波同时满足上行和下行的传输要求，从而提高用户设备的服务质量。
参见图4，为本发明实施例提供的一种基站的结构示意图，在本发明实施例中，所述基站包括确定模块401、指示模块402、生成模块403和第一切换模块404。
确定模块401，用于确定工作载波受干扰时，获取第一载波集合；其中，所述第一载波集合包含基站侧未受到强干扰的载波。
指示模块402，用于向用户设备发送载波测量指示，所述载波测量指示用于指示所述用户设备对探测到的载波进行载波测量生成测量结果，并向所述基站返回所述测量结果。
生成模块403，用于根据所述测量结果确定第二载波集合，以及将所述第一载波集合和所述第二载波集合取交集生成载波交集；其中，所述第二载波集合包含所述用户设备侧未受到强干扰的载波。
第一切换模块，用于从所述载波交集中选择一个载波作为目标载波，并将所述工作载波切换为所述目标载波。
本发明实施例和方法实施例一基于同一构思，其带来的技术效果也相同，具体过程请参照方法实施例一的描述，此处不再赘述。
进一步，在本发明的一些实施例中，所述确定模块具体包括：
第一确定单元，用于测量预设时长内所述工作载波的RSSI大于预设的第一门限值时，确定所述工作载波受到强干扰；
测量单元，用于确定探测到的除所述工作载波之外的其他载波，并在预设时长内分别测量所述其他载波中各个载波的RSSI；
第二确定单元，用于当测量到的RSSI不大于所述第一门限值时，确定对应的载波未受到强干扰；
生成单元，用于根据未受到强干扰的载波生成所述第一载波集合。
可选的，所述生成模块用于：
获取所述测量结果中携带的所述探测到的载波中各个载波的RSSI；
当RSSI小于预设的第二门限值，确定对应的载波未受到强干扰；
根据所述用户设备探测到的载波中未受到强干扰的载波生成所述第二载波集合。
可选的，所述将所述第一切换模块用于：
当所述目标载波未被占用的时长超过预设值时，将所述工作载波切换为所述目标载波。
可选的，所述指示模块用于：
通过调度信息或RRC信令向用户设备发送载波测量指示。
可选的，所述基站还包括：
第二切换模块，用于如果所述载波交集为空，所述基站获取所述用户设备的业务等级；
判断所述用户设备的业务等级是否大于预设等级；
若为是，所述基站从所述第二载波集合中选择目标载波；
若为否，所述基站从所述第一载波集合中选择目标载波；
在确定目标载波之后，所述基站指示所述用户设备将所述工作载波切换为所述目标载波。
本发明实施例和方法实施例二基于同一构思，其带来的技术效果也相同，具体过程可参照方法实施例二的描述，此处不再赘述。
参见图5，为本发明实施例的一种基站的另一结构示意图，在本实施中，基站用于实现图1所述的基于非授权频段的载波切换方法，基站包括处理器501、存储器502和通信接口503，基站中的处理器501的数量可以是一个或多个，图5以一个处理器为例。本发明的一些实施例中，处理器501、存储器502和通信接口503可通过总线或其他方式连接，图5中以总线连接为例。
其中，存储器502中存储一组程序代码，且处理器501用于调用存储器502中存储的程序代码，用于执行以下操作：
确定工作载波受干扰时，获取第一载波集合；其中，所述第一载波集合包含基站侧未受到强干扰的载波；
向用户设备发送载波测量指示，所述载波测量指示用于指示所述用户设备对探测到的载波进行载波测量生成测量结果，并向所述基站返回所述测量结果；
根据所述测量结果确定第二载波集合，以及将所述第一载波集合和所述第二载波集合取交集生成载波交集；其中，所述第二载波集合包含所述用户设备侧未受到强干扰的载波
从所述载波交集中选择一个载波作为目标载波，并将所述工作载波切换为所述目标载波。
在本发明的一些实施例中，处理器501执行所述确定工作载波收到干扰时，根据未受到强干扰的载波生成第一载波集合包括：
测量预设时长内所述工作载波的RSSI大于预设的第一门限值时，确定所述工作载波受到强干扰；
确定探测到的除所述工作载波之外的其他载波，并在预设时长内分别测量所述其他载波中各个载波的RSSI；
当测量到的RSSI不大于所述第一门限值时，确定对应的载波未受到强干扰；
根据未受到强干扰的载波生成所述第一载波集合。
在本发明的一些实施例中，处理器501执行所述根据所述测量结果确定第二载波集合包括：
所述基站获取所述测量结果中携带的所述探测到的载波中各个载波的RSSI；
当RSSI小于预设的第二门限值，确定对应的载波未受到强干扰；
根据所述用户设备探测到的载波中未受到强干扰的载波生成所述第二载波集合。
在本发明的一些实施例中，处理器501执行所述将所述工作载波切换为所述目标载波包括：
当所述目标载波未被占用的时长超过预设值时，将所述工作载波切换为所述目标载波。
在本发明的一些实施例中，处理器501执行所述向用户设备发送载波测量指示包括：
通过调度信息或RRC信令向用户设备发送载波测量指示。
在本发明的一些实施例中，处理器501还用于执行：
如果所述载波交集为空，所述基站获取所述用户设备的业务等级；
判断所述用户设备的业务等级是否大于预设等级；
若为是，所述基站从所述第二载波集合中选择目标载波；
若为否，所述基站从所述第一载波集合中选择目标载波；
在确定目标载波之后，所述基站指示所述用户设备将所述工作载波切换为所述目标载波。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所揭露的仅为本发明一种较佳实施例而已，当然不能以此来限定本发明之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本发明权利要求所作的等同变化，仍属于发明所涵盖的范围。

Claims (13)

  1. 一种基于非授权频段的载波切换方法，其特征在于，包括：
    基站确定工作载波受到强干扰时，获取第一载波集合；其中，所述第一载波集合包含基站侧未受到强干扰的载波；
    所述基站向用户设备发送载波测量指示，所述载波测量指示用于指示所述用户设备对探测到的载波进行载波测量生成测量结果，并向所述基站返回所述测量结果；
    所述基站根据所述测量结果确定第二载波集合，以及将所述第一载波集合和所述第二载波集合取交集生成载波交集；其中，所述第二载波集合包含所述用户设备侧未受到强干扰的载波；
    所述基站从所述载波交集中选择一个载波作为目标载波，并将所述工作载波切换为所述目标载波。
  2. 如权利要求1所述的方法，其特征在于，所述基站确定工作载波受到强干扰时，根据未受到强干扰的载波生成第一载波集合包括：
    所述基站测量预设时长内所述工作载波的RSSI大于预设的第一门限值时，确定所述工作载波受到强干扰；
    所述基站确定探测到的除所述工作载波之外的其他载波，并在预设时长内分别对所述其他载波中各个载波进行多次RSSI测量；
    当测量到的RSSI不大于所述第一门限值时，确定对应的载波未受到强干扰；
    根据未受到强干扰的载波生成所述第一载波集合。
  3. 如权利要求2所述的方法，其特征在于，所述基站根据所述测量结果确定第二载波集合包括：
    所述基站获取所述测量结果中携带的所述探测到的载波中各个载波的RSSI；
    当RSSI小于预设的第二门限值，确定对应的载波未受到强干扰；
    根据所述用户设备探测到的载波中未受到强干扰的载波生成所述第二载波集合。
  4. 如权利要求1所述的方法，其特征在于，所述将所述工作载波切换为所述目标载波包括：
    当所述目标载波未被占用的时长超过预设值时，将所述工作载波切换为所述目标载波。
  5. 如权利要求1所述的方法，其特征在于，所述基站向用户设备发送载波测量指示包括：
    所述基站通过调度信息或RRC信令向用户设备发送载波测量指示。
  6. 如权利要求1-5任意一项所述的方法，其特征在于，还包括：
    如果所述载波交集为空，所述基站获取所述用户设备的业务等级；
    判断所述用户设备的业务等级是否大于预设等级；
    若为是，所述基站从所述第二载波集合中选择目标载波；
    若为否，所述基站从所述第一载波集合中选择目标载波；
    在确定目标载波之后，所述基站指示所述用户设备将所述工作载波切换为所述目标载波。
  7. 一种基站，其特征在于，包括：
    确定模块，用于确定工作载波受干扰时，获取第一载波集合；其中，所述第一载波集合包含基站侧未受到强干扰的载波；
    指示模块，用于向用户设备发送载波测量指示，所述载波测量指示用于指示所述用户设备对探测到的载波进行载波测量生成测量结果，并向所述基站返回所述测量结果；
    生成模块，用于根据所述测量结果确定第二载波集合，以及将所述第一载波集合和所述第二载波集合取交集生成载波交集；其中，所述第二载波集合包含所述用户设备侧未受到强干扰的载波；
    第一切换模块，用于从所述载波交集中选择一个载波作为目标载波，并将所述工作载波切换为所述目标载波。
  8. 如权利要求7所述的基站，其特征在于，所述确定模块具体包括：
    第一确定单元，用于测量预设时长内所述工作载波的RSSI大于预设的第一门限值时，确定所述工作载波受到强干扰；
    测量单元，用于确定探测到的除所述工作载波之外的其他载波，并在预设时长内分别测量所述其他载波中各个载波的RSSI；
    第二确定单元，用于当测量到的RSSI不大于所述第一门限值时，确定对应的载波未受到强干扰；
    生成单元，用于根据未受到强干扰的载波生成所述第一载波集合。
  9. 如权利要求7所述的基站，其特征在于，所述生成模块用于：
    获取所述测量结果中携带的所述探测到的载波中各个载波的RSSI；
    当RSSI小于预设的第二门限值，确定对应的载波未受到强干扰；
    根据所述用户设备探测到的载波中未受到强干扰的载波生成所述第二载波集合。
  10. 如权利要求7所述的基站，其特征在于，所述将所述第一切换模块用于：
    当所述目标载波未被占用的时长超过预设值时，将所述工作载波切换为所述目标载波。
  11. 如权利要求7所述的基站，其特征在于，所述指示模块用于：
    通过调度信息或RRC信令向用户设备发送载波测量指示。
  12. 如权利要求7-11任意一项所述的基站，其特征在于，还包括：
    第二切换模块，用于如果所述载波交集为空，所述基站获取所述用户设备的业务等级；
    判断所述用户设备的业务等级是否大于预设等级；
    若为是，从所述第一载波集合中选择目标载波；
    若为否，从所述第二载波集合中选择目标载波；
    在确定目标载波之后，指示所述用户设备将所述工作载波切换为所述目标载波。
  13. 一种通信系统，其特征在于，包括基站和用户设备，
    所述基站用于确定工作载波受干扰时，获取第一载波集合；其中，所述第一载波集合为基站侧未受到强干扰的载波；
    向所述用户设备发送载波测量指示；
    根据所述测量结果确定第二载波集合，以及将所述第一载波集合和所述第二载波集合生成载波交集；其中，所述第二载波集合为所述用户设备侧未受到强干扰的载波
    从所述载波交集中选择一个载波作为目标载波，并将所述工作载波切换为所述目标载波；
    所述用户设备用于接收所述载波测量指示；
    根据所述载波测量指示对探测到的载波进行策略生成测量结果，向所述基站返回所述测量结果。
PCT/CN2015/093541 2015-09-30 2015-10-31 一种基于非授权频段的载波切换方法、基站和系统 WO2017054289A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114022983A (zh) * 2021-12-09 2022-02-08 Oppo广东移动通信有限公司 跳频信道选择方法及装置、通信方法及装置、通信系统

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106993334A (zh) * 2016-01-21 2017-07-28 中兴通讯股份有限公司 数据传输方法及装置
US10070321B2 (en) * 2016-06-01 2018-09-04 Qualcomm Incorporated Method and apparatuses for suspending traffic in a frequency band
CN106255120B (zh) * 2016-08-24 2019-06-28 重庆邮电大学 一种与异构网on/off算法相结合的动态频谱选择方法
CN106550468B (zh) * 2016-11-07 2020-03-31 北京佰才邦技术有限公司 数据传输方法和基站
WO2019010713A1 (zh) * 2017-07-14 2019-01-17 深圳前海达闼云端智能科技有限公司 终端切换的方法、装置以及基站和存储介质
WO2020029158A1 (en) * 2018-08-09 2020-02-13 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for operations in different frequency bands within a radio device
CN110890953B (zh) 2018-09-11 2022-07-19 华为技术有限公司 使用免授权频段的通信方法和通信装置
CN112640516B (zh) * 2018-10-11 2023-02-03 华为技术有限公司 一种无线干扰检测方法及设备
CN111669790A (zh) * 2019-03-08 2020-09-15 中国移动通信有限公司研究院 小区重选或重定向方法、装置、网络侧设备及终端
CN117460064A (zh) * 2022-07-14 2024-01-26 华为技术有限公司 一种载波切换方法及装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101547486A (zh) * 2008-03-24 2009-09-30 华为技术有限公司 切换处理的方法、系统和装置
CN101932045A (zh) * 2009-06-24 2010-12-29 中兴通讯股份有限公司 载波聚合中测量结果的上报方法及用户设备
US20130231104A1 (en) * 2010-10-01 2013-09-05 Telefonaktiebolaget L M Ericsson (Publ) Technique for Managing Measurements for Multiple Subscriptions in a Mobile Terminal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101754402A (zh) * 2008-12-01 2010-06-23 三星电子株式会社 寻找空闲工作频段的方法和系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101547486A (zh) * 2008-03-24 2009-09-30 华为技术有限公司 切换处理的方法、系统和装置
CN101932045A (zh) * 2009-06-24 2010-12-29 中兴通讯股份有限公司 载波聚合中测量结果的上报方法及用户设备
US20130231104A1 (en) * 2010-10-01 2013-09-05 Telefonaktiebolaget L M Ericsson (Publ) Technique for Managing Measurements for Multiple Subscriptions in a Mobile Terminal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114022983A (zh) * 2021-12-09 2022-02-08 Oppo广东移动通信有限公司 跳频信道选择方法及装置、通信方法及装置、通信系统
CN114022983B (zh) * 2021-12-09 2023-08-11 Oppo广东移动通信有限公司 跳频信道选择方法及装置、通信方法及装置、通信系统

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