[go: up one dir, main page]

WO2014044132A1 - 一种小小区的发现方法和装置 - Google Patents

一种小小区的发现方法和装置 Download PDF

Info

Publication number
WO2014044132A1
WO2014044132A1 PCT/CN2013/083243 CN2013083243W WO2014044132A1 WO 2014044132 A1 WO2014044132 A1 WO 2014044132A1 CN 2013083243 W CN2013083243 W CN 2013083243W WO 2014044132 A1 WO2014044132 A1 WO 2014044132A1
Authority
WO
WIPO (PCT)
Prior art keywords
small cell
base station
serving
small
quasi
Prior art date
Application number
PCT/CN2013/083243
Other languages
English (en)
French (fr)
Inventor
苟伟
夏树强
戴博
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CA2881277A priority Critical patent/CA2881277C/en
Priority to US14/419,622 priority patent/US20150215852A1/en
Priority to RU2015109995A priority patent/RU2606560C2/ru
Priority to EP13838797.2A priority patent/EP2876941B1/en
Priority to AU2013317438A priority patent/AU2013317438B2/en
Priority to JP2015528864A priority patent/JP6364410B2/ja
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
Priority to KR1020157005457A priority patent/KR101644281B1/ko
Priority to MX2015003580A priority patent/MX346839B/es
Priority to BR112015006025A priority patent/BR112015006025A2/pt
Priority to IN2641DEN2015 priority patent/IN2015DN02641A/en
Publication of WO2014044132A1 publication Critical patent/WO2014044132A1/zh
Priority to HK15105835.1A priority patent/HK1205404A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a method and apparatus for discovering a small cell. Background technique
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • LTE-A evolved LTE
  • LTE-A can provide spectrum bandwidth of up to 100MHz, support more flexible and higher quality communication, and LTE-A system has good backward compatibility.
  • CC Component Carrier
  • one LTE terminal can only work on one backward compatible CC, and the stronger LTE-A terminal can simultaneously on multiple CCs.
  • the transmission is performed, that is, the terminal implementing LTE-A simultaneously transmits and receives data in multiple component carriers, thereby achieving the purpose of improving bandwidth.
  • This technique is known as multi-carrier aggregation technology.
  • a small cell In the current LTE, in order to better solve the user terminal (UE) communication in the local hotspot area and improve the spectrum efficiency, a small cell is introduced, and the small cell is characterized by a small coverage (a radius of several tens of meters). ), the transmit power is low, but the density of deployment is high.
  • the small cell is relative to the macro cell.
  • the macro cell generally covers a large area (with a radius of 500 meters or more), and the transmission power is high.
  • the macro cell can use the same frequency as the small cell, or can use different frequencies. .
  • the macro cell generally uses a lower frequency band to better provide a larger range of coverage, and the small cell generally uses a higher frequency band to provide high-speed data services. As shown in FIG. 1 , FIG.
  • FIG. 1 is a schematic diagram of coverage of a typical macro cell and a small cell.
  • There are many small cells under the coverage of a macro cell and each small cell uses a different frequency band, and the macro cell uses a frequency point fl, which is small.
  • the cell uses the frequency point f2.
  • a plurality of frequency points of the macro cell may be used, and a small cell may also use multiple frequency points, and the frequency points of the macro cell and the small cell do not overlap, for example, according to the attribute of the carrier, the macro cell Generally, a frequency of 2 GHz or less is used, and a small cell generally uses a frequency of 3 Ghz or more.
  • the UE Since the coverage of the small cell is small and the number is large, and most of the frequency points are different from those of the macro cell, in a system configured with a small cell, the UE needs to frequently perform inter-frequency measurement, which has the following effects on the UE:
  • the power consumption of the UE increases;
  • the data affecting the macro cell is transmitted to the terminal. Because of the inter-frequency measurement, most UEs need to interrupt the data transmission of the original frequency.
  • the LTE R11 phase puts forward new requirements for spectrum resource utilization, network energy conservation, and interference suppression between cells.
  • a new carrier type is proposed, which is applied by means of carrier aggregation techniques.
  • the main feature of the new carrier is that it does not need to consider backward compatibility when designing, and more new technologies can be applied in it.
  • the new carrier in LTE R11 is defined as that it needs to be paired with at least one compatible carrier, and the cell reference channel (CRS) of the LTE R8 is not configured in the new carrier to avoid the neighboring cell in the cell. Severe CRS interference at the edge, especially CRS interference between macro cells and small cells in a heterogeneous network (HetNet) scenario.
  • HetNet heterogeneous network
  • the carrier in the small cell is configured as a new carrier type, which can effectively help the small cell to save power.
  • the small cell can be turned off when there is no serving UE, which can help the network side to save energy.
  • how is the closed small cell discovered by the UE that needs to configure the small cell how to configure it to the UE, and Due to the large number of small cells, how to select a suitable small cell for the UE.
  • the prior art has not proposed a solution to the above problems. Summary of the invention
  • the main purpose of the embodiments of the present invention is to provide a method and a device for discovering a small cell, so as to solve at least the problem of the UE in the macro cell being discovered by the UE in the macro cell, and implementing energy saving on the network side and the UE. .
  • a method for discovering a small cell includes: the base station of the macro cell triggers a small cell in an inactive state to send a specific signal, and triggers the user terminal UE to receive a specific signal sent by the small cell.
  • the base station triggering the small cell refers to the base station signaling the base station of the small cell.
  • the method further includes: the base station receiving information that the UE finds and determines the reported small cell according to the received specific signal; and the small cell determined by the base station from the UE A part or all of the small cells are selected and configured as a quasi-serving small cell of the UE.
  • the method further includes: the base station triggering the quasi-serving small cell to send the measurement.
  • the base station receives the measurement result reported by the UE for the quasi-serving small cell, and selects a small cell serving as the UE from the quasi-serving small cell according to the measurement result. , a small cell serving the UE is activated.
  • the base station selects a small cell serving as the UE from the quasi-serving small cells according to the load condition of the small cell, the channel quality, and the UE carrier aggregation capability.
  • the specific signal is one of the following:
  • Channel state information reference signal CSI-RS Primary synchronization signal PSS and/or secondary synchronization signal SSS;
  • the specific signal sent by the small cell is notified to the UE by the base station by using a macro cell, or the base station notifies the UE of the value range or detection range of the specific signal by using the macro cell.
  • the small cell does not support UE camping in an idle state.
  • the small cell is in an inactive state when the data is not transmitted by the UE, and does not send the specific signal; when the UE transmits data in the small cell, the small cell is in an active state, and the specific signal.
  • the base station triggers the small cell in the inactive state to send the specific signal when determining that at least one UE needs to configure the small cell; and the small cell in the inactive state does not send the specific signal before being triggered.
  • the base station triggers the UE to receive a specific signal sent by the small cell by sending a dedicated radio resource control RRC signaling or a broadcast message.
  • RRC radio resource control
  • the UE does not receive the specific signal sent by the small cell before being triggered by the base station.
  • the UE determines that the small cell reported to the base station is a small cell whose channel quality meets the requirements.
  • the base station selects some or all small cells from the small cells determined by the UE according to the load condition of the small cell, the channel quality, and the UE carrier aggregation capability, and is configured as a quasi-serving small cell of the UE.
  • the measurement signal is a CSI-RS or a common reference signal CRS.
  • the measurement signal when the small cell does not transmit data for the UE or is not triggered by the base station as the quasi-serving small cell, the measurement signal is not sent; when the small cell transmits data for the UE or is triggered by the base station as the quasi-serving small cell, the measurement signal is sent.
  • the method further includes: in the small cell triggered to send the specific signal, the small cell that is not configured as the quasi-serving small cell of the UE no longer transmits the specific signal.
  • a small cell discovery apparatus is applicable to a base station of a macro cell, and the apparatus includes: a triggering module, configured to trigger a small cell in an inactive state to send a specific signal, and trigger a user terminal UE to receive the specific signal.
  • the triggering small cell is a base station that is sent by the triggering module to notify a small cell.
  • the device further includes: an information receiving module, configured to receive information that the UE finds and determines the reported small cell according to the received specific signal;
  • a configuration module configured to select some or all small cells from the small cells determined by the UE, and configured as a quasi-serving small cell of the UE.
  • the device further includes: an activation module, configured to trigger the quasi-serving small cell to send a measurement signal to the UE, and receive a measurement result reported by the UE to the quasi-serving small cell, and according to the The measurement result selects a small cell serving as the UE from the quasi-serving small cell, and activates a small cell serving as the UE.
  • an activation module configured to trigger the quasi-serving small cell to send a measurement signal to the UE, and receive a measurement result reported by the UE to the quasi-serving small cell, and according to the The measurement result selects a small cell serving as the UE from the quasi-serving small cell, and activates a small cell serving as the UE.
  • the activation module is further configured to select a small cell serving as the UE from the quasi-serving small cell according to a load condition of a small cell, a channel quality, and a UE carrier aggregation capability.
  • the triggering module is further configured to trigger the UE to receive the specific signal sent by the small cell by sending a dedicated radio resource control RRC signaling or a broadcast message.
  • the configuration module is further configured to: select some or all of the small cells from the small cells determined by the UE according to the load condition of the small cell, the channel quality, and the UE carrier aggregation capability, and configure the small cell as the quasi-serving small cell of the UE. .
  • a small cell network element including:
  • the trigger accepting module is configured to receive the base station trigger of the macro cell when the small cell is in an inactive state
  • the specific signal sending module is configured to receive a specific signal to the UE in the macro cell after being triggered by the base station of the macro cell.
  • the small cell network element further includes: a measurement signal sending module, configured to: when the small cell is selected by the base station as a quasi-serving small cell of the user terminal UE, under the trigger of the base station, to the UE Send a measurement signal.
  • the small cell network element further includes: a UE service module, configured to provide a service to the UE after being activated by the base station when the base station is selected as the small cell served by the UE.
  • a UE service module configured to provide a service to the UE after being activated by the base station when the base station is selected as the small cell served by the UE.
  • the small cell does not support UE camping in an idle state.
  • the small cell network element is in an inactive state when the data is not transmitted by the UE, and the specific signal is not sent.
  • the small cell network element is in an active state. Send the specific signal.
  • the measurement signal is not sent; when the small cell network element transmits data for the UE or is triggered by the base station as the quasi-serving small cell, Send a measurement signal.
  • a user terminal UE comprising:
  • a specific signal receiving module configured to receive a base station trigger of the macro cell, and receive a specific signal sent by the small cell subordinate to the macro cell;
  • the small cell reporting module is configured to discover and determine the information of the small cell according to the received specific signal, and report the information to the base station.
  • the UE further includes: a measurement module, configured to receive a measurement signal sent by the quasi-serving small cell selected by the base station, and report the measurement result of the quasi-serving small cell to the base station.
  • a measurement module configured to receive a measurement signal sent by the quasi-serving small cell selected by the base station, and report the measurement result of the quasi-serving small cell to the base station.
  • the specific signal receiving module does not receive the specific signal sent by the small cell before being triggered by the base station.
  • the small cell reporting module determines that the small cell reported to the base station is a small cell whose channel quality meets requirements.
  • the method and device for discovering a small cell enable a UE in a macro cell in a heterogeneous network of a wireless communication system to discover a small cell under the macro cell, and the network
  • the network side can provide a service for the UE to select a suitable small cell; and the mechanism of the present invention ensures that both the network side and the UE can effectively save energy.
  • FIG. 1 is a schematic diagram of coverage of a macro cell and a small cell in the prior art
  • FIG. 2 is a flowchart of a method for discovering a small cell according to an embodiment of the present invention. detailed description
  • a method for discovering a small cell according to an embodiment of the present invention mainly includes the following steps:
  • Steps 201-202 The base station of the macro cell triggers the small cell in the inactive state to send a specific signal, and triggers the UE to receive the specific signal sent by the small cell.
  • the triggering includes sending a signaling notification, or by special signal notification, for example, the base station sends a pulse signal.
  • the base station and small cell of the macro cell are essentially a base station, which is described in the context of a heterogeneous network.
  • the small cell in the inactive state refers to a small cell that is not serving the UE.
  • the step can also be summarized as follows:
  • the base station triggers the small cell to send a specific signal, and the base station triggers the UE to receive the specific signal.
  • the base station and the small cell may be affiliation, for example, a relationship between a macro cell and a small cell, or two macro base stations or two small cells.
  • the base station triggers the small cell, and the base station signals the base station of the small cell.
  • the base station of the macro cell i.e., the eNB shown in Figure 2 triggers the subordinate small cell to transmit a specific signal as needed, and triggers the UE to receive the specific signal transmitted by the small cell.
  • the specific signal sent by the small cell is notified to the UE by the base station by using a macro cell, or the base station notifies the UE of the value range or detection range of the specific signal by using the macro cell.
  • the base station When the base station determines that at least one UE needs to configure a small cell, it triggers a small cell in an inactive state to send a specific signal; and the small cell in an inactive state does not send before being triggered. Send a specific signal.
  • the base station triggers the UE to receive a specific signal sent by the small cell by transmitting dedicated radio resource control (RRC) signaling or a broadcast message.
  • RRC radio resource control
  • the UE does not receive the specific signal transmitted by the small cell before being triggered by the base station.
  • Step 203 The base station receives information that the UE finds and determines the reported small cell according to the received specific signal.
  • the step may also be described as: the base station receives the report information determined by the UE according to the received specific signal. This step can also be used as an optional step. For example, after steps 201-202, the base station only uses the information of step 203 as the reference information for determining the small cell.
  • the UE identifies and determines the corresponding small cell according to the received specific signal, and reports the determined information of the small cell to the base station.
  • the UE determines that the small cell reported to the base station is a small cell whose channel quality meets the requirements. For example, the UE reports the ID of the M cells with the best measurement results; or, reports the index and measurement strength of the M cells with the best measurement results. If the measurement takes place on a carrier of a different frequency, then further corresponding frequency point information needs to be reported.
  • Step 204 The base station selects some or all small cells from the small cells determined by the UE, and is configured as a quasi-serving small cell of the UE.
  • the quasi-serving small cell means that the small cell is configured to the UE, but whether the small cell finally provides data transmission and service for the UE needs further determination.
  • the step can also be described as follows:
  • the base station configures a serving cell of the UE according to the information reported by the UE.
  • This step can also be used as an optional step.
  • the base station only needs to refer to the small cell information reported by the UE to configure the serving small cell for the UE.
  • the base station is allowed to configure the UE for the UE.
  • the cell is from a small cell that is not reported by the UE.
  • the base station selects some or all of the small cells from the small cells reported by the UE, and configures them as the quasi-serving small cells of the UE, thereby completing the process of configuring the small cells for the UE by the base station.
  • the base station selects some or all small cells from the small cells determined by the UE according to the load condition of the small cell, the channel quality, and the UE carrier aggregation capability, and is configured as a quasi-serving small cell of the UE.
  • a small cell that is triggered to transmit a specific signal a small cell that is not configured as a quasi-serving small cell of the UE no longer transmits a specific signal.
  • the method further includes the step 203, the base station notifying that the small cell that is not configured as the quasi-serving small cell of the UE stops transmitting the specific signal.
  • the method further includes the steps 205 to 207, the base station triggers the quasi-serving small cell to send a measurement signal to the UE, and the base station receives the measurement reported by the UE to the quasi-serving small cell.
  • the base station triggers the quasi-serving small cell to send a measurement signal to the UE, and the base station receives the measurement reported by the UE to the quasi-serving small cell.
  • a small cell serving as the UE is selected from the quasi-serving small cells according to the measurement result, and a small cell serving as the UE is activated.
  • the base station selects a small cell serving as the UE from the quasi-serving small cell according to the load condition of the small cell, the channel quality, and the UE carrier aggregation capability.
  • the small cell does not transmit a measurement signal until it is triggered by the base station as a quasi-serving small cell.
  • the measurement signal is not sent; when the small cell transmits data for the UE or is triggered by the base station as the quasi-serving small cell, the measurement signal is sent.
  • the step corresponding to the dotted arrow is an optional step.
  • the small cell when a part of the carrier of the small cell is a new carrier type or all of the new carrier type, preferably, when the small cell is not configured to any one UE or the small cell does not transmit data for the UE, the small cell is small.
  • the cell does not send any information (including specific signals and measurement signals), the small cell is in an inactive state (meaning that the small cell is closed, and energy conservation is maintained); or, the small cell is inactive before the base station is triggered to transmit a specific signal. status.
  • Such a small cell triggers its transmission of relevant signals (such as specific signals) only when the base station needs it, thereby ensuring energy saving on the network side.
  • the small cell does not provide the UE in the idle state to camp, and the UE in the idle state needs to camp in the macro cell.
  • For an activated small cell at least one UE is configured with the small cell or the small cell is transmitting data for the UE, it always transmits a specific signal, which is advantageous for the UE to discover the activated small cell.
  • the UE in the idle state it does not receive the specific signal or measurement signal of the small cell, and the UE in the idle state does not need to perform the discovery and measurement of the small cell, thereby achieving energy saving.
  • the base station triggers the UE to receive the specific signal according to needs (such as small cell load, channel quality, UE carrier aggregation capability, etc.).
  • the specific signal in the embodiment of the present invention refers to a signal with a small cell identified, and the UE can identify and determine the small cell by receiving or detecting the specific signal.
  • the specific signals in the embodiments of the present invention include, but are not limited to, discovery signaling, channel state information reference signals (CSS-RS primary synchronization signals (PSS), and/or secondary synchronization signals (SSS, Secondary synchronization signal), One of the reference signals, the Common Reference Signal (CRS), that is synchronized.
  • CRS Common Reference Signal
  • the discovery signaling is a type of information used to identify a small cell, and is sent by the physical layer, and is also considered to be used by the existing PSS/SSS/CRS, or PRS (Location Reference Signal) or CSI-RS as the discovery signaling.
  • the CSI-RS sequence is calculated based on the identifier (ID) of the small cell. Therefore, after detecting the CSI-RS, the UE can reversely obtain the corresponding small cell ID.
  • PSS and SSS are used to carry small cell IDs.
  • the reference signal and CRS of the synchronous tracking are similar to the CSI-RS. After detecting the reference signal or CRS of the synchronization tracking, the UE can reversely obtain the corresponding small cell ID.
  • the base station can notify the UE of the specific signal sent by the small cell to the UE through the macro cell, so that the UE can directly receive and avoid the process of blindly detecting the specific signal; or the base station notifies the UE of the sequence range of the specific signal or the range of the detection, and thus It can help the UE reduce the workload of sequence determination.
  • configuration information of a specific signal for example, configuration related information of CSI-RS, including one of CSI-RS-Config, CSI-RS-ConfigNZP, CSI-RS-ConfigNZPId, CSI-RS-ConfigZP and CSI-RS-ConfigZPId or Multiple resource-free control information elements, and the value of the physical layer sequence of the CSI-RS configuration or a set of possible potential values.
  • configuration related information of CSI-RS including one of CSI-RS-Config, CSI-RS-ConfigNZP, CSI-RS-ConfigNZPId, CSI-RS-ConfigZP and CSI-RS-ConfigZPId or Multiple resource-free control information elements, and the value of the physical layer sequence of the CSI-RS configuration or a set of possible potential values.
  • the base station Before the base station transmits a specific signal in a small cell that is in an inactive state (off), the base station should determine that it is necessary to configure a small cell for at least one UE, otherwise the inactive small cell remains in a closed state. In a specific implementation, the small cell that does not receive the base station trigger information is not activated. Send a specific signal, which is always kept off, which is good for network side energy saving. However, for a small cell that provides services for at least one UE or has been configured to the UE, a specific signal is to be sent, because it is convenient for the suitable UE to discover and provide services in time.
  • the base station When the base station determines that a small cell needs to be configured for the UE according to the load balancing, the signal quality, the scheduling requirement, and the like, the base station triggers the small cell in the inactive state of the macro cell to send a specific signal, and notifies the UE to receive the specific signal sent by the small cell.
  • the base station may notify the UE by using dedicated radio resource control (RRC) signaling, or notify the UE to receive the specific signal sent by the small cell by using a broadcast message.
  • RRC radio resource control
  • the UE does not receive the specific signal transmitted by the small cell until the UE receives the notification that the base station triggers its reception of the specific signal.
  • the UE When the UE is in an idle state, the UE does not receive a specific signal transmitted by the small cell.
  • the UE When the specific signal of the small cell is triggered, the UE needs to identify and acknowledge the small cell corresponding to the specific signal from the received specific signal, and report the small cell whose channel quality in the confirmed small cell meets the predetermined requirement to the base station.
  • the base station selects some or all of the small cells for the UE according to the load condition of the small cell, the channel quality, the UE carrier aggregation capability, and the like in the small cell reported by the UE.
  • the base station re-closes the small cell that is not configured for the UE, so that it remains energy-saving.
  • the base station After the base station configures the small cell (as the quasi-serving small cell of the UE), the base station triggers the configured small cell to send a measurement signal, and is used by the UE to measure the small cell configured by the base station.
  • Measurement signals include, but are not limited to, CSI-RS, CRS.
  • the small cell configured for the UE does not transmit the measurement signal until the base station triggers its transmission of the measurement signal, which is also for network energy saving.
  • the small cell does not transmit data to the UE or is not configured to the UE, the small cell does not transmit the measurement signal, and when the small cell transmits data for the UE or is configured as the quasi-serving small cell of the UE, the measurement signal is sent.
  • the UE needs to report the measurement result of the quasi-serving small cell configured by the base station to the base station, and the base station provides services for the UE to activate the small cell that meets the predetermined requirement according to the measurement result, mainly referring to the load condition, channel quality, and UE carrier of the small cell. Aggregation capabilities to determine the activated small cell.
  • the process of the small cell serving the UE is divided into two processes: configuration and activation. That is, the base station configures the small cell for the UE first, and the UE needs to solve the small cell discovery in the process of configuring the small cell. To determine which small cells are suitable for the UE, the small cells (ie, the quasi-serving small cells) that the base station configures for the UE are not necessarily all activated by the base station to provide services to the UE.
  • the specific signal of the small cell is triggered by the base station, and the small cell does not support the camping of the idle state UE. Therefore, when the small cell subordinate has no UE service, the small cell may not send the specific signal. Thereby keeping the off state energy saving.
  • the UE in the idle state does not receive the specific signal of the small cell, and selects the macro cell to camp on when camping, thus avoiding the UE performing the small cell measurement frequently in the idle state, thereby making the UE energy-saving. That is to say, for the UE in the idle state, it can work in a mode in which no small cell exists.
  • the macro cell and its subordinate small cell coverage are as shown in FIG.
  • the method of the present invention when the network is deployed, at least one carrier of the macro cell uses a compatible carrier type to provide a larger coverage; the carrier of the small cell subordinate to the macro cell adopts a new carrier type and is deployed in the hotspot area. Users provide a high data experience.
  • a small cell subordinate to the macro cell For a small cell subordinate to the macro cell, it remains in an inactive state (i.e., the air interface does not transmit and receive information, remains off) until a specific signal is triggered by the macro cell. If the small cell subordinate to the macro cell is serving the UE (refers to being activated by the base station to provide services for the UE), or is configured by the base station as a small cell of the UE (ie, the base station triggers sending a specific signal but is not activated), then the small cell It is necessary to keep transmitting specific signals all the time.
  • the UE in the idle state does not receive the specific signal of the small cell until the base station of the macro cell triggers the specific signal of the small cell to be received by the UE, and the UE identifies and discovers the small cell from the received specific signal by receiving the specific signal, and
  • the information of the determined small cell is reported to the base station of the macro cell, and the base station of the macro cell selects a suitable small cell for the UE according to the load condition of the small cell, the channel quality, and the carrier aggregation capability that the UE can support from the small cell reported by the UE. .
  • the base station of the macro cell notifies that the small cell configured for the UE sends a measurement signal, and notifies that the small cell that is not configured for the UE is closed.
  • the UE performs measurement on the configured small cell, and reports the measurement result.
  • the base station of the macro cell activates the small cell serving the UE according to the measurement result, combining the small cell load condition and the UE carrier aggregation capability.
  • the macro cell and its subordinate small cell coverage are as shown in FIG. 1.
  • Embodiments in accordance with the present invention are also possible for the case where the carrier type of the small cell is deployed as a compatible carrier type.
  • the small cell does not support camping, and for the UE that needs to camp, the UE chooses to stay in the macro cell. Therefore, the method in the first embodiment can also be used in the implementation to implement the discovery and configuration process of the macro cell and the small cell. It can also ensure energy saving on the network side and the UE side.
  • the macro cell and its subordinate small cell coverage are as shown in FIG.
  • Embodiments in accordance with the present invention are also possible for the case where the carrier type of the small cell is deployed as a compatible carrier type.
  • the small cell supports camping; for UEs that need to camp, the UE may select a suitable small cell to camp.
  • This implementation is implemented as follows:
  • a small cell For a small cell subordinate to a macro cell, it always transmits a specific signal regardless of whether the small cell is configured or activated for the UE.
  • the UE in the idle state also needs to receive a specific signal, and timely distinguish and determine a small cell in the vicinity by using a specific signal, and the UE updates and saves the determined small cell in real time.
  • the specific signal can support the UE to perform measurement
  • the UE directly performs measurement according to the specific signal, and selects a small cell camp that satisfies the camp condition.
  • the particular signal does not support the UE for performing measurements, then the UE may use the reference signal (e.g., CRS) for measurement in the small cell to perform measurements, selecting the appropriate small cell camp based on the measurement.
  • CRS reference signal
  • the macro cell triggers the UE to receive the small cell specific signal to confirm the small cell, and the UE reports the discovered small cell to the macro cell (the UE will save the updated update located near itself).
  • the cell reports that the UE actually receives the specific signal in real time.
  • the macro cell selects a suitable small cell to configure for the UE.
  • the UE performs measurement on the configured small cell, reports the measurement result, and the macro cell selects a suitable small cell for the activation.
  • the macro cell and its subordinate small cell coverage are as shown in FIG. 1 .
  • At least one carrier of the macro cell uses a compatible carrier type to provide a larger coverage; the carrier of the small cell subordinate to the macro cell adopts a new carrier type and is deployed in the hotspot area. Users provide a high data experience.
  • the UE in the connected state also needs to receive a specific signal, and timely distinguish and determine the nearby small cell by using a specific signal.
  • the UE in the connected state In preparation for the measurement of the small cell, the UE in the connected state only needs to measure the small cell in the vicinity of the discovery, that is, the measurement is performed only at the discovered small cell frequency.
  • the UE in the idle state does not receive the specific signal of the small cell until the base station of the macro cell triggers the specific signal of the small cell, and the UE identifies and discovers the small cell from the received specific signal by receiving the specific signal, and determines the small cell.
  • the information of the cell is reported to the base station of the macro cell, and the base station of the macro cell selects an appropriate small cell for the UE according to the load condition of the small cell, the channel quality, and the carrier aggregation capability that the UE can support from the small cell reported by the UE.
  • the base station of the macro cell notifies that the small cell configured for the UE sends a measurement signal, and notifies that the small cell that is not configured for the UE is closed.
  • the UE performs measurement on the configured small cell, and reports the measurement result to the base station of the macro cell.
  • the base station of the macro cell activates the small cell serving as the UE according to the measurement result, combined with the small cell load condition and the UE carrier aggregation capability.
  • An embodiment of the method for discovering a small cell further provides an embodiment of a small cell discovery apparatus, where the apparatus is applicable to a base station of a macro cell, and includes:
  • the triggering module is configured to trigger a small cell that is in an inactive state to send a specific signal, and trigger the UE to receive the specific signal sent by the small cell.
  • the triggering small cell is a base station that the triggering module signals the small cell.
  • the device further includes: an information receiving module, configured to receive information that the UE finds and determines the reported small cell according to the received specific signal;
  • the configuration module is configured to select some or all of the small cells from the small cells determined by the UE, and is configured as a quasi-serving small cell of the UE.
  • the device further includes: an activation module, configured to trigger the quasi-serving small cell to send a measurement signal to the UE, and receive a measurement result reported by the UE to the quasi-serving small cell, and according to the The measurement result selects a small cell serving as the UE from the quasi-serving small cell, and activates a small cell serving as the UE.
  • an activation module configured to trigger the quasi-serving small cell to send a measurement signal to the UE, and receive a measurement result reported by the UE to the quasi-serving small cell, and according to the The measurement result selects a small cell serving as the UE from the quasi-serving small cell, and activates a small cell serving as the UE.
  • the activation module is further configured to select a small cell serving as the UE from the quasi-serving small cell according to the load condition of the small cell, the channel quality, and the UE carrier aggregation capability.
  • the triggering module is further configured to trigger the UE to receive the specific signal sent by the small cell by sending the dedicated RRC signaling or the broadcast message.
  • the configuration module is further configured to: select some or all of the small cells from the small cells determined by the UE according to the load condition of the small cell, the channel quality, and the UE carrier aggregation capability, and configure the small service of the UE to be small. Community.
  • a small cell network element including:
  • the trigger accepting module is configured to receive the base station trigger of the macro cell when the small cell is in an inactive state
  • the specific signal sending module is configured to receive a specific signal to the UE in the macro cell after being triggered by the base station of the macro cell.
  • the network element further includes: a measurement signal sending module, configured to send a measurement signal to the UE when triggered by the base station when the small cell is selected by the base station as a quasi-serving small cell of the UE.
  • a measurement signal sending module configured to send a measurement signal to the UE when triggered by the base station when the small cell is selected by the base station as a quasi-serving small cell of the UE.
  • the network element further includes: a UE service module, configured to provide a service to the UE after being activated by the base station when the base station is selected as the small cell served by the UE.
  • a UE service module configured to provide a service to the UE after being activated by the base station when the base station is selected as the small cell served by the UE.
  • the small cell does not support UE camping in an idle state.
  • the small cell network element is in an inactive state when the data is not transmitted by the UE, and the specific signal is not sent.
  • the UE transmits data in the small cell the small cell network element is in an active state. Send the specific signal.
  • the measurement signal is not sent; when the small cell network element transmits data for the UE or is triggered by the base station as the quasi-serving small cell, the measurement signal is sent. .
  • a UE comprising:
  • a specific signal receiving module configured to receive a base station trigger of the macro cell, and receive a specific signal sent by the small cell subordinate to the macro cell;
  • the small cell reporting module is configured to discover and determine the information of the small cell according to the received specific signal, and report the information to the base station.
  • the UE further includes: a measurement module, configured to receive a measurement signal sent by the quasi-serving small cell selected by the base station, and report the measurement result of the quasi-serving small cell to the base station.
  • a measurement module configured to receive a measurement signal sent by the quasi-serving small cell selected by the base station, and report the measurement result of the quasi-serving small cell to the base station.
  • the specific signal receiving module does not receive the specific signal transmitted by the small cell before being triggered by the base station.
  • the small cell reporting module determines that the small cell reported to the base station is a small cell whose channel quality meets the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明公开了一种小小区的发现方法和装置，方法包括：宏小区的基站触发处于未激活状态的小小区发送特定信号，并触发用户终端（UE）接收所述小小区发送的特定信号；所述基站接收所述UE根据接收的特定信号发现并确定上报的小小区的信息；所述基站从UE确定的小小区中选择部分或全部小小区，配置为所述UE的准服务小小区。通过本发明，实现了在无线通信系统异构网络中宏小区下的UE能够发现该宏小区下的小小区，并且网络侧能够为UE选择合适的小小区提供服务；且本发明机制确保了网络侧和UE都能够有效节能。

Description

一种小小区的发现方法和装置 技术领域
本发明涉及移动通信领域， 尤其涉及一种小小区的发现方法和装置。 背景技术
随着移动通信产业的发展、 以及对移动数据业务需求的不断增长， 用 户对移动通信的速率和服务质量（Qos )的要求越来越高， 于是在第三代移 动通信（3G )还没有大规模商用之前， 就已经开始了对下一代移动通信系 统的研究和开发工作， 其中比较典型的是第三代合作伙伴计划 （3GPP )启 动的长期演进（LTE， Long Term Evolution )项目， LTE系统可提供的最高 频语带宽为 20MHz (兆赫兹）。随着网络的进一步演进，演进 LTE ( LTE-A ) 作为 LTE的演进系统， 可以提供高达 100MHz的频谱带宽， 支持更灵活更 高质量的通信， 同时 LTE-A系统具备很好的后向兼容性。 在 LTE-A系统中 有多个分量载波（ CC， Component Carrier )， 一个 LTE终端只能工作在某一 个后向兼容的 CC上， 而能力较强的 LTE-A终端可以同时在多个 CC上进 行传输， 即实现 LTE-A的终端同时在多个分量载波中传输和接收数据， 从 而达到提升带宽的目的。 该技术被称为多载波聚合技术。
在现阶段的 LTE中，为了更好的解决局部热点区域内的用户终端（ UE ) 通信， 提升频谱效率， 引入了小小区 （small cell ), 小小区的特点是覆盖范 围小 （半径几十米）， 发射功率低， 但部署的密度高。 小小区是相对于宏小 区 （macro cell ) 而言的， 宏小区一般覆盖范围比较大（半径 500米以上）， 发射功率高， 宏小区可以使用与小小区相同的频率， 也可以使用不同的频 率。 对于使用不同的频率的情况， 宏小区一般使用较低的频段， 更好的提 供较大范围的覆盖， 小小区一般使用较高的频段， 提供高速的数据服务。 如图 1所示， 图 1是一种典型的宏小区与小小区的覆盖示意图， 宏小区覆 盖下有很多的小小区， 并且每个小小区使用不同的频段， 宏小区使用频点 fl， 小小区使用频点 f2。 当然， 在载波聚合的场景下， 宏小区的频点可以 使用多个， 小小区也是可以使用多个频点的， 且宏小区与小小区的频点不 重叠， 例如根据载波的属性，宏小区一般使用 2GHz以下的频点， 小小区一 般使用 3Ghz以上的频点。
由于小小区的覆盖范围小、数量多，且多数使用与宏小区不同的频点， 因此在配置有小小区的系统中， UE需要频繁的执行异频测量， 这会对 UE 造成以下影响：
1、 UE的功耗增大；
2、 影响宏小区的数据传输给终端， 因为异频测量时， 多数 UE需要中 断原有频率的数据传输。
因此， 在有大量小小区存在的系统中， 需要考虑对于小小区测量的优 化， 以帮助终端节能。
另外， 在现阶段的研究中， 在多载波聚合技术的基础上， LTE R11阶段 对于频谱资源利用率、 网络节能、 以及小区之间的干扰抑制方面提出了新 的要求。 为了实现这一目的， 提出了新载波（ new carrier type )， 借助于载 波聚合技术来应用。新载波的主要特点是，在设计时无需考虑后向兼容性， 可以应用更多的新技术在其中。例如， 目前 LTE R11中对新载波的定义为， 需要和至少一个兼容载波配对应用，在新载波中不配置 LTE R8的小区参考 信号 （CRS， Cell-specific Reference Signals ), 以避免邻小区在小区边缘严 重的 CRS干扰， 特别是在异构网络（HetNet )场景下宏小区和小小区之间 的 CRS干扰。
小小区中的载波均配置为新载波类型， 可以有效的帮助小小区省电， 例如：小小区在没有服务 UE时可以关闭，从而可以帮助网络侧节能。但是， 关闭后的小小区如何被需要配置小小区的 UE发现， 如何配置给 UE， 而且 由于小小区数量众多， 如何选择合适的小小区给 UE。 现有技术还未提出针 对以上问题的解决方案。 发明内容
有鉴于此， 本发明实施例的主要目的在于提供一种小小区的发现方法 和装置， 以至少解决宏小区下的 UE对于该宏小区下的小小区的发现问题， 实现网络侧和 UE的节能。
为达到上述目的， 本发明实施例的技术方案是这样实现的：
一种小小区的发现方法， 该方法包括： 宏小区的基站触发处于未激活 状态的小小区发送特定信号，并触发用户终端 UE接收所述小小区发送的特 定信号。
优选的， 所述基站触发小小区是指基站信令通知小小区的基站。
优选的， 在所述基站触发 UE接收特定信号后， 该方法还包括： 所述基 站接收所述 UE根据接收的特定信号发现并确定上报的小小区的信息；所述 基站从 UE确定的小小区中选择部分或全部小小区，配置为所述 UE的准服 务小小区。
优选的，在所述基站从 UE确定的小小区中选择部分或全部小小区， 配 置为所述 UE的准服务小小区后，该方法还包括： 所述基站触发所述准服务 小小区发送测量信号给所述 UE， 且所述基站接收所述 UE上报的对所述准 服务小小区的测量结果， 并根据所述测量结果从所述准服务小小区中选择 为所述 UE服务的小小区， 激活为所述 UE服务的小小区。
优选的， 基站根据小小区的负载情况、 信道质量、 UE 载波聚合能力， 从所述准服务小小区中选择为所述 UE服务的小小区。
优选的， 所述特定信号为以下其中之一：
发现信令；
信道状态信息参考信号 CSI-RS; 主同步信号 PSS和 /或辅同步信号 SSS;
同步跟踪的参考信号；
公共参考信号 CRS。
优选的， 所述小小区发送的特定信号由所述基站通过宏小区通知给所 述 UE， 或者所述基站通过宏小区通知 UE所述特定信号的取值范围或检测 范围。
优选的，所述小小区中的载波中，部分载波或全部载波为新载波类型。 优选的， 所述小小区不支持空闲状态的 UE驻留。
优选的， 所述小小区在不为 UE传输数据时， 处于未激活状态， 不发送 所述特定信号；所述小小区中有 UE传输数据时，所述小小区处于激活状态， 发送所述特定信号。
优选的，所述基站在确定至少一个 UE需要配置小小区时， 才触发处于 未激活状态的小小区发送特定信号； 且处于未激活状态的小小区在被触发 之前不发送特定信号。
优选的， 所述基站通过发送专用无线资源控制 RRC信令或广播消息触 发 UE接收小小区发送的特定信号。
优选的， 所述 UE在被基站触发之前， 不接收小小区发送的特定信号。 优选的，所述 UE确定上报给基站的小小区，是信道质量满足要求的小 小区。
优选的， 所述基站根据小小区的负载情况、 信道质量、 UE载波聚合能 力， 从 UE确定的小小区中选择部分或全部小小区， 配置为所述 UE的准服 务小小区。
优选的， 所述测量信号为 CSI-RS或公共参考信号 CRS。
优选的，当小小区未为 UE传输数据或未作为准服务小小区被基站触发 时， 不发送测量信号； 当小小区为 UE传输数据或作为准服务小小区被基站 触发时， 发送测量信号。 优选的， 所述方法还包括： 在被触发发送特定信号的小小区中， 未被 配置为 UE的准服务小小区的小小区不再发送特定信号。
一种小小区的发现装置， 适用于宏小区的基站中， 该装置包括： 触发模块， 配置为触发处于未激活状态的小小区发送特定信号， 并触 发用户终端 UE接收所述小小区发送的特定信号。
优选的， 所述触发小小区是所述触发模块信令通知小小区的基站。 优选的， 该装置还包括： 信息接收模块， 配置为接收所述 UE根据接收 的特定信号发现并确定上报的小小区的信息；
配置模块， 配置为从 UE确定的小小区中选择部分或全部小小区， 配置 为所述 UE的准服务小小区。
优选的， 所述装置还包括： 激活模块， 配置为触发所述准服务小小区 发送测量信号给所述 UE， 接收所述 UE上报的对所述准服务小小区的测量 结果，并根据所述测量结果从所述准服务小小区中选择为所述 UE服务的小 小区， 激活为所述 UE服务的小小区。
优选的， 所述激活模块还配置为，根据小小区的负载情况、信道质量、 UE载波聚合能力， 从所述准服务小小区中选择为所述 UE服务的小小区。
优选的， 所述触发模块还配置为， 通过发送专用无线资源控制 RRC信 令或广播消息触发 UE接收小小区发送的特定信号。
优选的， 所述配置模块还配置为，根据小小区的负载情况、信道质量、 UE载波聚合能力， 从 UE确定的小小区中选择部分或全部小小区， 配置为 所述 UE的准服务小小区。
一种小小区网元， 包括：
触发接受模块， 配置为在小小区处于未激活状态时， 接受宏小区的基 站触发；
特定信号发送模块， 配置为接受宏小区的基站触发后， 发送特定信号 给宏小区内的 UE。 优选的， 所述小小区网元还包括： 测量信号发送模块， 配置为在所述 小小区被基站选择为用户终端 UE的准服务小小区时，在所述基站的触发下， 向所述 UE发送测量信号。
优选的， 所述小小区网元还包括： UE服务模块， 配置为在被基站选择 为所述 UE服务的小小区时， 在被所述基站的激活后为所述 UE提供服务。
优选的， 所述小小区不支持空闲状态的 UE驻留。
优选的， 所述小小区网元在不为 UE传输数据时， 处于未激活状态， 不 发送所述特定信号； 所述小小区中有 UE传输数据时， 所述小小区网元处于 激活状态， 发送所述特定信号。
优选的，当小小区网元未为 UE传输数据或未作为准服务小小区被基站 触发时， 不发送测量信号； 当小小区网元为 UE传输数据或作为准服务小小 区被基站触发时， 发送测量信号。
一种用户终端 UE， 包括：
特定信号接收模块， 配置为接受宏小区的基站触发， 接收所述宏小区 下属的小小区发送的特定信号；
小小区上报模块， 配置为根据接收的特定信号发现并确定小小区的信 息， 上报给所述基站。
优选的， 所述 UE还包括： 测量模块， 配置为接收所述基站选择的准服 务小小区发送的测量信号， 并上报对所述准服务小小区的测量结果给所述 基站。
优选的， 在被基站触发之前， 所述特定信号接收模块不接收小小区发 送的特定信号。
优选的， 所述小小区上报模块确定上报给基站的小小区， 是信道质量 满足要求的小小区。
本发明实施例所提供的一种小小区的发现方法和装置， 实现了在无线 通信系统异构网络中宏小区下的 UE能够发现该宏小区下的小小区，并且网 络侧能够为 UE选择合适的小小区提供服务；且本发明机制确保了网络侧和 UE都能够有效节能。 附图说明
图 1为现有技术中宏小区与小小区的覆盖示意图；
图 2为本发明实施例的一种小小区的发现方法的流程图。 具体实施方式
下面结合附图和具体实施例对本发明的技术方案进一步详细阐述。 本发明实施例提供的一种小小区的发现方法， 如图 2所示， 主要包括 以下步骤：
步骤 201~202，宏小区的基站触发处于未激活状态的小小区发送特定信 号， 并触发 UE接收所述小小区发送的特定信号。 其中， 触发包括发送信令 通知、 或者通过特殊信号通知， 例如基站发送脉冲信号。 宏小区的基站、 小小区的实质就是一个基站， 这里是以异构网为背景介绍的。 未激活状态 的小小区是指未为 UE提供服务的小小区。
该步骤也可以总结为： 基站触发小小区发送特定信号， 基站触发 UE 接收所述特定信号。基站和小小区可以是从属关系，例如 macro cell和 small cell的关系， 也可以两个宏基站或两个小小区。 所述基站触发小小区， 是指 基站信令通知小小区的基站。
宏小区的基站（即图 2中所示的 eNB )根据需要触发下属的小小区发 送特定信号， 并触发 UE接收小小区发送的特定信号。
所述小小区发送的特定信号由所述基站通过宏小区通知给所述 UE， 或 者所述基站通过宏小区通知 UE所述特定信号的取值范围或检测范围。
所述基站在确定至少一个 UE需要配置小小区时，才触发处于未激活状 态的小小区发送特定信号； 且处于未激活状态的小小区在被触发之前不发 送特定信号。
所述基站通过发送专用无线资源控制（RRC )信令或广播消息触发 UE 接收小小区发送的特定信号。
所述 UE在被基站触发之前， 不接收小小区发送的特定信号。
步骤 203，基站接收所述 UE根据接收的特定信号发现并确定上报的小 小区的信息。
该步骤也可以描述为：基站接收所述 UE根据接收到的特定信号确定的 上报信息。 该步骤也可以作为可选步骤， 例如在步骤 201~202之后， 基站 仅仅利用步骤 203的信息作为确定小小区的参考信息。
UE根据接收的特定信号识别和确定对应的小小区， 并将确定的小小区 的信息上报给基站； UE确定上报给基站的小小区， 是信道质量满足要求的 小小区。 例如， UE上报测量结果最好的 M个小区的 ID; 或者， 上报测量 结果最好的 M个小区的索引及测量强度。 如果测量发生在不同频率的载波 上， 那么进一步还需要上报对应的频点信息。
步骤 204， 基站从 UE确定的小小区中选择部分或全部小小区， 配置为 所述 UE 的准服务小小区。 其中， 准服务小小区， 是指将该小小区配置给 UE, 但是小小区是否最终为 UE提供数据传输、 服务还需要进一步确定。
该步骤也可以描述为： 所述基站根据所述 UE上报的信息， 配置所述 UE的服务小区。 该步骤也可以作为可选步骤， 例如基站仅仅参考 UE上报 的小小区信息来为 UE配置服务小小区， 极端情况（例如 UE上报的小小区 都是负载较重的 )允许基站为 UE配置的小小区来自非 UE上报的小小区。
基站从 UE上报的小小区中选择部分或全部小小区，配置为 UE的准服 务小小区， 从而完成基站为 UE配置小小区的过程。
所述基站根据小小区的负载情况、 信道质量、 UE 载波聚合能力， 从 UE确定的小小区中选择部分或全部小小区， 配置为所述 UE的准服务小小 区。 在被触发发送特定信号的小小区中，未被配置为 UE的准服务小小区的 小小区不再发送特定信号。可选的，在步骤 203之后，还可以包括步骤 203a， 基站通知未被配置为 UE的准服务小小区的小小区停止发送特定信号。
较佳的，在步骤 204之后还包括步骤 205~207，基站触发所述准服务小 小区发送测量信号给所述 UE， 且所述基站接收所述 UE上报的对所述准服 务小小区的测量结果， 并根据所述测量结果从所述准服务小小区中选择为 所述 UE服务的小小区， 激活为所述 UE服务的小小区。
基站根据小小区的负载情况、 信道质量、 UE载波聚合能力， 从所述准 服务小小区中选择为所述 UE服务的小小区。
在作为准服务小小区被基站触发之前， 所述小小区不发送测量信号。 当小小区未为 UE传输数据或未作为准服务小小区被基站触发时，不发 送测量信号； 当小小区为 UE传输数据或作为准服务小小区被基站触发时， 发送测量信号。
需要说明的是， 在图 2 所示的流程中， 虚线箭头所对应的步骤为可选 步骤。
在上述的流程中， 对于基站和 UE进行了一些处理， 使得基站和 UE均 可以节能。 根据本发明的实施例， 当小小区的载波有一部分为新载波类型 或全部为新载波类型时，优选的， 小小区在未配置给任何一个 UE时或者小 小区没有为 UE传输数据时， 小小区不发送任何信息 (包括特定信号和测量 信号）， 小小区处于未激活状态 （是指小小区关闭， 保持节能）； 或者， 小 小区在未被基站触发发送特定信号之前， 小小区处于未激活状态。 这样的 小小区只有在基站有需求的时候才会触发其发送相关信号 （如特定信号）， 从而保证了网络侧的节能。 小小区不提供空闲状态的 UE驻留，此时空闲态 的 UE需要驻留在宏小区中。 对于激活的小小区（至少为一个 UE配置了该 小小区或者小小区正在为 UE传输数据）， 其始终发送特定信号， 这样有利 于 UE发现激活的小小区。 对于空闲态的 UE， 其不接收小小区的特定信号或者测量信号等， 这样 空闲态的 UE不需要执行小小区的发现和测量，从而实现了节能。 空闲态的 UE变为连接态后， 由基站根据需要（如小小区负载、 信道质量、 UE载波 聚合能力等 )触发 UE接收特定信号。
本发明实施例的特定信号是指一种具备标识小小区的信号， UE接收或 检测出这种特定信号就可以识别和确定出该小小区。 本发明实施例中的特 定信号包括但不限于： 发现信令、 信道状态信息参考信号（CSI-RS 主同 步信号 ( PSS , Primary synchronization signal ) 和 /或辅同步信号 ( SSS , Secondary synchronization signal )、同步跟踪的参考信号、公共参考信号（ CRS ) 中的一个。
其中， 发现信令是一种用于标识小小区的信息， 通过物理层发送， 也 被认为由现有的 PSS/SSS/CRS、 或者 PRS (定位参考信号 )或 CSI-RS作为 发现信令。 CSI-RS序列是根据小小区的标识（ID )计算得来的， 所以 UE 检测到 CSI-RS后， 就可以反推获得对应的小小区 ID。 PSS和 SSS是用来 携带小小区 ID的。 同步跟踪的参考信号和 CRS与 CSI-RS类似， UE检测 到同步跟踪的参考信号或 CRS后就可以反推获得对应的小小区 ID。
基站可以将小小区发送的特定信号通过宏小区通知给 UE， 这样便于 UE直接接收， 避免盲检特定信号的过程； 或者基站通知给 UE， 特定信号 的序列取值范围或检测的范围，这样也可以帮助 UE减少序列确定的工作量。 例如特定信号的配置信息 （例如 CSI-RS 的配置相关信息， 包括 CSI-RS-Config, CSI-RS-ConfigNZP, CSI-RS-ConfigNZPId, CSI-RS-ConfigZP 和 CSI-RS-ConfigZPId中的一个或多个无资源控制信息单元， 以及 CSI-RS 配置的物理层序列的取值或可能的潜在取值集合。
基站在触发处于未激活状态 （关闭） 的小小区发送特定信号前， 基站 应该确定需要为至少一个 UE配置小小区，否则所述未激活的小小区保持关 闭状态。 具体实施中， 没有接收到基站触发信息的未激活状态的小小区不 发送特定信号， 其实际始终保持关闭， 这样有利于网络侧节能。 但是对于 至少为一个 UE在提供服务， 或者已经被配置给 UE的小小区， 是要发送特 定信号的， 因为方便适合的 UE及时发现， 并为其提供服务。
基站根据负载均衡、信号质量、调度需要等确定需要为 UE配置小小区 时， 基站触发宏小区下属的处于未激活状态的小小区发送特定信号， 并通 知 UE接收小小区发送的特定信号。基站可以采用专用无线资源控制（RRC ) 信令通知 UE， 或者采用广播消息通知 UE接收小小区发送的特定信号。 UE 在未接收到基站触发其接收特定信号的通知之前， UE不接收小小区发送的 特定信号。 当 UE处于空闲状态时， UE不接收小小区发送的特定信号。 当 被触发接收小小区的特定信号时， UE需要从接收的特定信号中识别和确认 发送特定信号对应的小小区， 并将确认出的小小区中信道质量满足预定要 求的小小区上报给基站。基站在 UE上报的小小区中根据小小区的负载情况、 信道质量、 UE载波聚合能力等， 为 UE选择其中部分或全部的小小区进行 配置。 基站将未为 UE配置的小小区重新关闭， 使其保持节能。
当基站为 UE配置了小小区（作为 UE的准服务小小区）后， 基站触发 所述配置的小小区发送测量信号，用于 UE对基站为其配置的小小区进行测 量。 测量信号包括但不限于 CSI-RS、 CRS。 为 UE配置的小小区在基站触 发其发送测量信号之前， 该小小区是不发送测量信号的， 这样也是为了网 络节能。 当小小区未为 UE传输数据或者未被配置给 UE时， 小小区不发送 测量信号， 当小小区为 UE传输数据或被配置为 UE的准服务小小区时则发 送测量信号。
UE需要将基站为其配置的准服务小小区的测量结果报告给基站， 由基 站根据测量结果为 UE激活满足预定要求的小小区提供服务，主要是参考小 小区的负载情况、 信道质量和 UE载波聚合能力来确定激活的小小区。
小小区为 UE服务的过程分为配置和激活两个过程，也就是说，基站为 UE先配置小小区， 配置小小区的过程中需要解决 UE对于小小区的发现， 以确定哪些小小区对于 UE是合适的， 基站配置给 UE的小小区（即准服务 小小区） 不一定都被基站激活向 UE提供服务。
本发明的实施例中， 小小区的特定信号是由基站触发发送的， 并且小 小区不支持空闲态 UE的驻留， 所以小小区下属没有 UE服务时， 小小区就 可以不再发送特定信号， 从而保持关闭状态节能。 对于 UE而言， 空闲态的 UE不接收小小区的特定信号， 驻留时选择宏小区进行驻留， 这样也就避免 了空闲态的 UE频繁的执行小小区测量， 从而使得 UE节能。 也就是说， 对 于空闲态的 UE， 可以按照没有小小区存在的模式工作。
下面以具体实施例进行说明。
本发明的实施例一， 在异频异构网络中， 宏小区及其下属的小小区覆 盖如图 1 所示。 按照本发明的方法， 在部署网络时， 宏小区的载波中至少 一个载波采用兼容载波类型， 提供较大的覆盖范围； 宏小区下属的小小区 的载波采用新载波类型， 部署在热点区域， 为用户提供高的数据体验。
对于宏小区， 需要始终保持开启状态。
对于宏小区下属的小小区， 保持非激活状态 （即空口不发送和接收信 息， 保持关闭） 直到被所述宏小区触发发送特定信号。 如果宏小区下属的 小小区正在为 UE服务（指被基站激活为 UE提供服务）， 或者被基站配置 为 UE的小小区 （即被基站触发发送特定信号但未被激活）， 那么这种小小 区是需要一直保持发送特定信号的。
对于 UE， 空闲状态的 UE不接收小小区的特定信号， 直到宏小区的基 站触发其接收小小区的特定信号， UE通过接收特定信号， 从接收的特定信 号中识别、 发现确定小小区， 并将确定的小小区的信息上报给宏小区的基 站，宏小区的基站从 UE上报的小小区中根据小小区的负载情况、信道质量 以及 UE能够支持的载波聚合能力， 选择合适的小小区为 UE配置。
宏小区的基站通知为 UE配置的小小区发送测量信号，同时通知没有为 UE配置的小小区关闭。 UE对于配置的小小区执行测量， 将测量结果上报 给宏小区的基站， 宏小区的基站根据测量结果， 结合小小区负载情况和 UE 载波聚合能力激活为 UE服务的小小区。
本发明的实施例二， 在异频异构网络中， 宏小区及其下属的小小区覆 盖如图 1 所示。 对于小小区的载波类型部署为兼容载波类型的情况， 按照 本发明的实施方式也是可行的。
本实施例中对于小小区不支持驻留， 对于需要驻留的 UE， UE选择驻 留在宏小区中。 这样本实施中也可以采用实施例一中的方式来实现宏小区 和小小区的发现和配置过程。 同样可以保证网络侧、 UE侧节能。
本发明的实施例三， 在异频异构网络中， 宏小区及其下属的小小区覆 盖如图 1 所示。 对于小小区的载波类型部署为兼容载波类型的情况， 按照 本发明的实施方式也是可行的。
本实施例中对于小小区支持驻留； 对于需要驻留的 UE， UE可以选择 合适的小小区驻留。 本实施按照以下方式实现：
对于宏小区， 需要始终保持开启状态；
对于宏小区下属的小小区， 其始终发送特定信号， 无论小小区是否为 UE配置或激活。 空闲状态的 UE也需要接收特定信号， 通过特定信号及时 分辨、 确定附近的小小区， 且 UE将确定的小小区实时更新保存。 所述特定 信号如果可以支持 UE执行测量， 那么 UE直接根据特定信号执行测量， 选 择满足驻留条件的小小区驻留。如果特定信号不支持 UE用于执行测量，那 么 UE可以使用小小区中用于测量的参考信号 （例如 CRS ) 来执行测量， 根据测量结果选择合适的小小区驻留。
当基站需要为 UE配置小小区时， 例如对于连接状态 UE， 宏小区触发 UE接收小小区特定信号确认小小区， UE上报发现的小小区给宏小区 （UE 将保存的更新的位于自己附近的小小区上报，实际上 UE是实时接收特定信 号的）， 宏小区选择合适的小小区为 UE配置， UE对于配置的小小区执行 测量， 上报测量结果， 宏小区为其选择适合的小小区激活。 本发明的实施例四， 在异频异构网络中， 宏小区及其下属的小小区覆 盖如图 1 所示。 按照本发明的方法， 在部署网络时， 宏小区的载波中至少 一个载波采用兼容载波类型， 提供较大的覆盖范围； 宏小区下属的小小区 的载波采用新载波类型， 部署在热点区域， 为用户提供高的数据体验。
对于宏小区， 需要始终保持开启状态。
对于宏小区下属的小小区， 其始终发送特定信号， 无论小小区是否为
UE配置或激活。 连接状态的 UE也需要接收特定信号， 通过特定信号及时 分辨、 确定附近的小小区。 为小小区的测量做准备， 这样连接状态的 UE 只需要测量发现的附近的小小区即可， 也就是说只在发现的小小区频点执 行测量。
空闲状态的 UE不接收小小区的特定信号，直到宏小区的基站触发其接 收小小区的特定信号， UE通过接收特定信号， 从接收的特定信号中识别、 发现确定小小区， 并将确定的小小区的信息上报给宏小区的基站， 宏小区 的基站从 UE上报的小小区中根据小小区的负载情况、信道质量以及 UE能 够支持的载波聚合能力， 选择合适的小小区为 UE配置。
宏小区的基站通知为 UE 配置的小小区发送测量信号， 并通知没有为 UE配置的小小区关闭。 UE对于配置的小小区执行测量， 将测量结果上报 给宏小区的基站， 宏小区的基站根据测量结果， 结合小小区负载情况和 UE 载波聚合能力激活为 UE服务的小小区。
对应小小区的发现方法的实施例， 本发明还提供了一种小小区的发现 装置的实施例， 该装置适用于宏小区的基站中， 包括：
触发模块， 配置为触发处于未激活状态的小小区发送特定信号， 并触 发 UE接收所述小小区发送的特定信号。
其中， 所述触发小小区是所述触发模块信令通知小小区的基站。
优选的， 该装置还包括： 信息接收模块， 配置为接收所述 UE根据接收 的特定信号发现并确定上报的小小区的信息； 配置模块， 配置为从 UE确定的小小区中选择部分或全部小小区， 配置 为所述 UE的准服务小小区。
较佳的， 该装置还包括： 激活模块， 配置为触发所述准服务小小区发 送测量信号给所述 UE， 接收所述 UE上报的对所述准服务小小区的测量结 果，并根据所述测量结果从所述准服务小小区中选择为所述 UE服务的小小 区， 激活为所述 UE服务的小小区。
较佳的， 所述激活模块还配置为，根据小小区的负载情况、信道质量、 UE载波聚合能力， 从所述准服务小小区中选择为所述 UE服务的小小区。
较佳的， 所述触发模块还配置为， 通过发送专用 RRC信令或广播消息 触发 UE接收小小区发送的特定信号。
较佳的， 所述配置模块还配置为，根据小小区的负载情况、信道质量、 UE载波聚合能力， 从 UE确定的小小区中选择部分或全部小小区， 配置为 所述 UE的准服务小小区。
一种小小区网元， 包括：
触发接受模块， 配置为在小小区处于未激活状态时， 接受宏小区的基 站触发；
特定信号发送模块， 配置为接受宏小区的基站触发后， 发送特定信号 给宏小区内的 UE。
较佳的， 该网元还包括： 测量信号发送模块， 配置为在所述小小区被 基站选择为 UE的准服务小小区时， 在所述基站的触发下， 向所述 UE发送 测量信号。
较佳的， 该网元还包括： UE服务模块， 配置为在被基站选择为所述 UE服务的小小区时， 在被所述基站的激活后为所述 UE提供服务。
所述小小区不支持空闲状态的 UE驻留。
所述小小区网元在不为 UE传输数据时，处于未激活状态， 不发送所述 特定信号；所述小小区中有 UE传输数据时，所述小小区网元处于激活状态， 发送所述特定信号。
当小小区网元未为 UE传输数据或未作为准服务小小区被基站触发时， 不发送测量信号；当小小区网元为 UE传输数据或作为准服务小小区被基站 触发时， 发送测量信号。
一种 UE， 包括：
特定信号接收模块， 配置为接受宏小区的基站触发， 接收所述宏小区 下属的小小区发送的特定信号；
小小区上报模块， 配置为根据接收的特定信号发现并确定小小区的信 息， 上报给所述基站。
较佳的， 该 UE还包括： 测量模块， 配置为接收所述基站选择的准服务 小小区发送的测量信号， 并上报对所述准服务小小区的测量结果给所述基 站。
在被基站触发之前， 所述特定信号接收模块不接收小小区发送的特定 信号。
所述小小区上报模块确定上报给基站的小小区， 是信道质量满足要求 的小小区。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种小小区的发现方法， 该方法包括：
基站触发小小区发送特定信号，基站触发用户终端 UE接收所述特定 信号。
2、 根据权利要求 1所述小小区的发现方法， 其中， 所述基站触发小 小区是指基站信令通知小小区的基站。
3、 根据权利要求 1所述小小区的发现方法， 其中， 在所述基站触发 UE接收特定信号后， 该方法还包括：
所述基站接收所述 UE根据接收的特定信号发现并确定上报的小小 区的信息；
所述基站从 UE确定的小小区中选择部分或全部小小区，配置为所述 UE的准服务小小区。
4、根据权利要求 3所述小小区的发现方法，其中，在所述基站从 UE 确定的小小区中选择部分或全部小小区，配置为所述 UE的准服务小小区 后， 该方法还包括：
所述基站触发所述准服务小小区发送测量信号给所述 UE， 且所述基 站接收所述 UE上报的对所述准服务小小区的测量结果，并根据所述测量 结果从所述准服务小小区中选择为所述 UE服务的小小区， 激活为所述 UE服务的小小区。
5、 根据权利要求 4所述小小区的发现方法， 其中， 基站根据小小区 的负载情况、 信道质量、 UE载波聚合能力， 从所述准服务小小区中选择 为所述 UE服务的小小区。
6、 根据权利要求 1至 5任一项所述小小区的发现方法， 其中， 所述 特定信号为以下其中之一：
发现信令； 信道状态信息参考信号 CSI-RS;
主同步信号 PSS和 /或辅同步信号 SSS;
同步跟踪的参考信号；
公共参考信号 CRS。
7、 根据权利要求 1至 5任一项所述小小区的发现方法， 其中， 所述 小小区发送的特定信号由所述基站通过宏小区通知给所述 UE， 或者所述 基站通过宏小区通知 UE所述特定信号的取值范围或检测范围。
8、 根据权利要求 1至 5任一项所述小小区的发现方法， 其中， 所述 小小区中的载波中， 部分载波或全部载波为新载波类型。
9、 根据权利要求 1所述小小区的发现方法， 其中， 所述小小区不支 持空闲状态的 UE驻留。
10、 根据权利要求 1至 5任一项所述小小区的发现方法， 其中， 所述小小区在不为 UE传输数据时， 处于未激活状态， 不发送所述特 定信号；
所述小小区中有 UE传输数据时， 所述小小区处于激活状态，发送所 述特定信号。
11、根据权利要求 1至 5任一项所述小小区的发现方法， 其中， 所述 基站在确定至少一个 UE需要配置小小区时，才触发处于未激活状态的小 小区发送特定信号； 且处于未激活状态的小小区在被触发之前不发送特 定信号。
12、 根据权利要求 1至 5任一项所述小小区的发现方法， 其中， 所 述基站通过发送专用无线资源控制 RRC信令或广播消息触发 UE接收小 小区发送的特定信号。
13、 根据权利要求 1至 5任一项所述小小区的发现方法， 其中， 所 述 UE在被基站触发之前， 不接收小小区发送的特定信号。
14、 根据权利要求 3所述小小区的发现方法， 其中， 所述 UE确定上 报给基站的小小区， 是信道质量满足要求的小小区。
15、 根据权利要求 3 所述小小区的发现方法， 其中， 所述基站根据 小小区的负载情况、 信道质量、 UE载波聚合能力， 从 UE确定的小小区 中选择部分或全部小小区， 配置为所述 UE的准服务小小区。
16、 根据权利要求 4 所述小小区的发现方法， 其中， 所述测量信号 为 CSI-RS或公共参考信号 CRS。
17、 根据权利要求 4所述小小区的发现方法， 其中，
当小小区未为 UE传输数据或未作为准服务小小区被基站触发时，不 发送测量信号；
当小小区为 UE传输数据或作为准服务小小区被基站触发时，发送测 量信号。
18、根据权利要求 3所述小小区的发现方法， 其中， 该方法还包括： 在被触发发送特定信号的小小区中，未被配置为 UE的准服务小小区 的小小区不再发送特定信号。
19、一种小小区的发现装置， 适用于宏小区的基站中， 该装置包括： 触发模块， 配置为触发处于未激活状态的小小区发送特定信号， 并 触发用户终端 UE接收所述小小区发送的特定信号。
20、 根据权利要求 19所述小小区的发现装置， 其中， 所述触发小小 区是所述触发模块信令通知小小区的基站。
21、根据权利要求 19所述小小区的发现装置，其中，该装置还包括： 信息接收模块，配置为接收所述 UE根据接收的特定信号发现并确定 上报的小小区的信息；
配置模块， 配置为从 UE确定的小小区中选择部分或全部小小区， 配 置为所述 UE的准服务小小区。
22、根据权利要求 21所述小小区的发现装置，其中，该装置还包括： 激活模块， 配置为触发所述准服务小小区发送测量信号给所述 UE， 接收所述 UE上报的对所述准服务小小区的测量结果，并根据所述测量结 果从所述准服务小小区中选择为所述 UE服务的小小区， 激活为所述 UE 服务的小小区。
23、 根据权利要求 22所述小小区的发现装置， 其中， 所述激活模块 还配置为， 根据小小区的负载情况、 信道质量、 UE载波聚合能力， 从所 述准服务小小区中选择为所述 UE服务的小小区。
24、 根据权利要求 19至 23任一项所述小小区的发现装置， 其中， 所述触发模块还配置为， 通过发送专用无线资源控制 RRC信令或广播消 息触发 UE接收小小区发送的特定信号。
25、 根据权利要求 21所述小小区的发现装置， 其中， 所述配置模块 还配置为， 根据小小区的负载情况、 信道质量、 UE 载波聚合能力， 从 UE确定的小小区中选择部分或全部小小区， 配置为所述 UE的准服务小 小区。
26、 一种小小区网元， 包括：
触发接受模块， 配置为在小小区处于未激活状态时， 接受宏小区的 基站触发；
特定信号发送模块， 配置为接受宏小区的基站触发后， 发送特定信 号给宏小区内的 UE。
27、 根据权利要求 26所述小小区网元， 其中， 还包括：
测量信号发送模块， 配置为在所述小小区被基站选择为用户终端 UE 的准服务小小区时， 在所述基站的触发下， 向所述 UE发送测量信号。
28、 根据权利要求 23所述小小区网元， 其中， 还包括：
UE服务模块， 配置为在被基站选择为所述 UE服务的小小区时， 在 被所述基站的激活后为所述 UE提供服务。
29、 根据权利要求 26、 27或 28所述小小区网元， 其中， 所述小小 区不支持空闲状态的 UE驻留。
30、 根据权利要求 26、 27或 28所述小小区网元， 其中， 所述小小区网元在不为 UE传输数据时， 处于未激活状态， 不发送所 述特定信号；
所述小小区中有 UE传输数据时， 所述小小区网元处于激活状态，发 送所述特定信号。
31、 根据权利要求 26、 27或 28所述小小区网元， 其中，
当小小区网元未为 UE传输数据或未作为准服务小小区被基站触发 时， 不发送测量信号；
当小小区网元为 UE传输数据或作为准服务小小区被基站触发时，发 送测量信号。
32、 一种用户终端 UE， 包括：
特定信号接收模块， 配置为接受宏小区的基站触发， 接收所述宏小 区下属的小小区发送的特定信号；
小小区上报模块， 配置为根据接收的特定信号发现并确定小小区的 信息， 上报给所述基站。
33、 根据权利要求 32所述 UE， 其中， 还包括： 测量模块， 配置为 接收所述基站选择的准服务小小区发送的测量信号， 并上报对所述准服 务小小区的测量结果给所述基站。
34、 根据权利要求 32或 33所述 UE， 其中， 在被基站触发之前， 所 述特定信号接收模块不接收小小区发送的特定信号。
35、 根据权利要求 32或 33所述 UE， 其中， 所述小小区上报模块确 定上报给基站的小小区， 是信道质量满足要求的小小区。
PCT/CN2013/083243 2012-09-21 2013-09-10 一种小小区的发现方法和装置 WO2014044132A1 (zh)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US14/419,622 US20150215852A1 (en) 2012-09-21 2013-09-10 Method and apparatus for finding small cells
RU2015109995A RU2606560C2 (ru) 2012-09-21 2013-09-10 Способ и устройство для поиска малых сот
EP13838797.2A EP2876941B1 (en) 2012-09-21 2013-09-10 Method and apparatus for finding small cells
AU2013317438A AU2013317438B2 (en) 2012-09-21 2013-09-10 Method and apparatus for finding small cells
JP2015528864A JP6364410B2 (ja) 2012-09-21 2013-09-10 小セルの発見方法及び装置
CA2881277A CA2881277C (en) 2012-09-21 2013-09-10 Method and apparatus for finding small cells
KR1020157005457A KR101644281B1 (ko) 2012-09-21 2013-09-10 소형 셀의 발견 방법 및 장치
MX2015003580A MX346839B (es) 2012-09-21 2013-09-10 Metodo y aparato para encontrar celulas pequeñas.
BR112015006025A BR112015006025A2 (pt) 2012-09-21 2013-09-10 método e sistema para descobrir uma célula pequena
IN2641DEN2015 IN2015DN02641A (zh) 2012-09-21 2013-09-10
HK15105835.1A HK1205404A1 (zh) 2012-09-21 2015-06-18 種小小區的發現方法和裝置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210353418.1 2012-09-21
CN201210353418.1A CN102883408B (zh) 2012-09-21 2012-09-21 一种小小区的发现方法和装置

Publications (1)

Publication Number Publication Date
WO2014044132A1 true WO2014044132A1 (zh) 2014-03-27

Family

ID=47484502

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/083243 WO2014044132A1 (zh) 2012-09-21 2013-09-10 一种小小区的发现方法和装置

Country Status (13)

Country Link
US (1) US20150215852A1 (zh)
EP (1) EP2876941B1 (zh)
JP (1) JP6364410B2 (zh)
KR (1) KR101644281B1 (zh)
CN (1) CN102883408B (zh)
AU (1) AU2013317438B2 (zh)
BR (1) BR112015006025A2 (zh)
CA (1) CA2881277C (zh)
HK (1) HK1205404A1 (zh)
IN (1) IN2015DN02641A (zh)
MX (1) MX346839B (zh)
RU (1) RU2606560C2 (zh)
WO (1) WO2014044132A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016018964A1 (en) * 2014-07-31 2016-02-04 Microsoft Technology Licensing, Llc Cell discovery

Families Citing this family (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102883408B (zh) * 2012-09-21 2017-04-05 中兴通讯股份有限公司 一种小小区的发现方法和装置
CN103716858B (zh) * 2012-09-29 2018-12-14 中兴通讯股份有限公司 一种实现小小区为ue服务的方法、装置和系统
CN109194437B (zh) * 2013-01-18 2019-09-03 华为技术有限公司 发现参考信号的发送和检测方法及装置
EP3313010B1 (en) * 2013-01-25 2019-09-11 LG Electronics Inc. Method and apparatus for performing initial access procedure in wireless communication system
KR102204048B1 (ko) * 2013-01-25 2021-01-19 팬텍 주식회사 무선통신 시스템에서 측정을 설정하는 정보를 송수신하는 방법 및 장치
CN103974278B (zh) * 2013-01-31 2019-07-16 上海诺基亚贝尔股份有限公司 通知nct信息、在drx中测量参考信号及功控的方法
US9439112B2 (en) * 2013-02-01 2016-09-06 Mediatek, Inc. Low overhead mobility in local area wireless network
CN104969596B (zh) * 2013-02-12 2019-04-23 诺基亚通信公司 用于管理用户装置移动驱动的小区系统负载平衡的系统和方法
WO2014127516A1 (en) * 2013-02-21 2014-08-28 Broadcom Corporation Enhanced discovery channel for interworking between a cellular wide-area communication system and a wireless local-area communication system
BR112015019630A2 (pt) * 2013-02-22 2017-07-18 Sony Corp dispositivo e método de controle de comunicação, e, dispositivo de terminal
US9084264B2 (en) * 2013-02-26 2015-07-14 Blackberry Limited Method and apparatus for small cell configuration in a heterogeneous network architecture
CN104080119B (zh) 2013-03-29 2018-05-11 华为技术有限公司 信号发送方法及设备
CN104105159B (zh) * 2013-04-03 2018-02-23 中国移动通信集团公司 小小区发现方法及中心控制单元、基站、用户设备
CN104105164A (zh) * 2013-04-03 2014-10-15 中国移动通信集团公司 频间小小区搜索系统和方法以及发现信号发送方法及设备
EP2966900B1 (en) * 2013-04-12 2018-10-31 Huawei Technologies Co., Ltd. Method and apparatus for assisting terminal in performing measurement
CN105191192B (zh) * 2013-05-09 2018-04-20 Lg 电子株式会社 接收用于检测小尺寸小区的搜索信号的方法
CN104168615B (zh) 2013-05-17 2019-05-10 中兴通讯股份有限公司 信号发送的方法及装置
CN104244372A (zh) * 2013-06-14 2014-12-24 中国移动通信集团公司 一种终端接入小小区的方法、终端及基站
JP6418154B2 (ja) * 2013-06-19 2018-11-07 ソニー株式会社 端末装置、通信制御装置及び通信制御方法
CN103327525B (zh) * 2013-07-10 2015-12-23 武汉邮电科学研究院 基于PUCCH的small cell发现方法
WO2015016573A1 (ko) * 2013-07-30 2015-02-05 삼성전자 주식회사 이동 통신 시스템에서 기지국의 디스커버리 신호 송수신 장치 및 방법
EP3032885B1 (en) * 2013-08-05 2020-11-11 Fujitsu Connected Technologies Limited Dormant cell discovering
JP6209898B2 (ja) * 2013-08-12 2017-10-11 ソニー株式会社 通信制御装置、通信制御方法及び端末装置
EP3457764B1 (en) 2013-08-19 2021-05-26 BlackBerry Limited Method and user equipment for communicating with a wireless access network node having an off state
WO2015039315A1 (zh) * 2013-09-18 2015-03-26 华为技术有限公司 小站通信方法、设备和系统
CN105684519B (zh) * 2013-10-28 2019-04-05 Lg电子株式会社 用于无线通信的方法和设备
EP2879425B1 (en) * 2013-11-28 2016-01-06 NTT Docomo, Inc. Macro-cell assisted small cell discovery and resource activation
EP2879434A1 (en) 2013-11-28 2015-06-03 NTT Docomo, Inc. Macro-cell assisted small cell discovery and resource activation
EP2879440A1 (en) * 2013-11-28 2015-06-03 NTT Docomo, Inc. Macro-cell assisted small cell discovery and resource activation
US9942820B2 (en) * 2013-12-02 2018-04-10 Apple Inc. Systems and methods for cross-cell carrier aggregation for coverage balance improvement
WO2015089296A1 (en) * 2013-12-11 2015-06-18 Zte Wistron Telecom Ab Csi-rs based cell discovery signal
WO2015089774A1 (en) * 2013-12-18 2015-06-25 Nokia Solutions And Networks Oy Method and apparatus
CN104735752B (zh) * 2013-12-19 2018-06-01 中国电信股份有限公司 激活休眠微基站的方法和系统以及基站
CN111988098B (zh) 2013-12-25 2022-08-12 松下电器（美国）知识产权公司 基站、终端、集成电路及通信方法
CN105052194A (zh) * 2013-12-30 2015-11-11 华为技术有限公司 邻区测量方法和设备
US10225725B2 (en) * 2014-01-14 2019-03-05 Sharp Kabushiki Kaisha Base station device and terminal device
CN104811962B (zh) * 2014-01-24 2021-03-09 中兴通讯股份有限公司 小小区基站状态切换方法及装置
JP2017510141A (ja) * 2014-01-26 2017-04-06 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． ユーザイクイップメント、基地局及びセル探索方法
US9961573B2 (en) * 2014-01-30 2018-05-01 Telefonaktiebolaget Lm Ericsson (Publ) Measurement on SCC SCell and on/off discovery signals
JP2017513259A (ja) * 2014-01-30 2017-05-25 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． チャネル品質フィードバックのためのシステム及び方法
CN103841574A (zh) * 2014-03-21 2014-06-04 宇龙计算机通信科技(深圳)有限公司 微小区半静态开关转换方法和微小区半静态开关转换系统
US9456406B2 (en) * 2014-03-28 2016-09-27 Intel IP Corporation Cell discovery and wake up through device-to-device discovery protocols
CN103957557B (zh) * 2014-04-25 2017-11-10 工业和信息化部电信传输研究所 一种终端测量上报方法
CN105101280B (zh) * 2014-05-09 2019-06-18 中国移动通信集团公司 传输点识别和无线资源管理测量的方法、设备及系统
WO2015180181A1 (zh) * 2014-05-30 2015-12-03 华为技术有限公司 数据传输方法及基站
CN104618956B (zh) * 2015-01-12 2018-05-01 中国联合网络通信集团有限公司 一种控制小区的方法及装置
CN106304123B (zh) * 2015-06-10 2020-10-20 电信科学技术研究院 一种无线移动网络的小小区资源配置方法及装置
CN106792950A (zh) * 2015-11-23 2017-05-31 中兴通讯股份有限公司 一种超密集网络传输方法、基站、ue及网元
CN107294672B (zh) * 2016-03-30 2020-01-17 中国移动通信集团上海有限公司 一种小区载波聚合的调度方法及装置
US9877263B1 (en) 2016-05-14 2018-01-23 Sprint Communications Company L.P. Carrier aggregation (CA) for user equipment (UE) and wireless relays
EP3501209B1 (en) * 2016-08-22 2021-04-14 Telefonaktiebolaget LM Ericsson (publ) A processing unit and a method therein for initiating cell activation
CN114025365B (zh) * 2017-08-11 2024-04-12 华为技术有限公司 一种辅小区激活方法、接入网设备、通信装置以及系统
CN117395814A (zh) * 2018-06-20 2024-01-12 谷歌有限责任公司 释放信息以改善在不同的资源控制状态下的小区选择
US10798706B1 (en) * 2018-10-22 2020-10-06 Sprint Spectrum L.P. Method and system for operation of nearby access nodes on a common wideband carrier and on different respective narrowband carriers within the wideband carrier
CN111526600B (zh) * 2020-04-21 2022-03-15 达闼机器人有限公司 网络接入的方法、装置、存储介质及终端和网络设备
CN111786764B (zh) * 2020-06-30 2022-08-26 中国联合网络通信集团有限公司 主载波选择方法、系统、终端设备及计算机可读存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101784039A (zh) * 2009-01-20 2010-07-21 华为技术有限公司 激活通信设备的方法、网络侧设备及网络系统
CN102238663A (zh) * 2010-05-06 2011-11-09 电信科学技术研究院 一种基站进入工作状态的方法、系统和装置
WO2012094608A2 (en) * 2011-01-07 2012-07-12 Interdigital Patent Holdings, Inc. Communicating channel state information (csi) of multiple transmission points
CN102883408A (zh) * 2012-09-21 2013-01-16 中兴通讯股份有限公司 一种小小区的发现方法和装置

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2450481C2 (ru) * 2007-11-08 2012-05-10 Телефонактиеболагет Лм Эрикссон (Пабл) Способ и устройство для обеспечения передачи обслуживания из наземной мобильной сети доступа wcdma в сеть общего доступа
US9504007B2 (en) * 2009-06-24 2016-11-22 Samsung Electronics Co., Ltd. Terminal, method for managing thereof, base station and method for managing thereof
JPWO2011004599A1 (ja) * 2009-07-10 2012-12-20 パナソニック株式会社 移動通信システム、端末装置および基地局装置
KR101083542B1 (ko) * 2009-10-16 2011-11-14 주식회사 팬택 소형 기지국 및 그의 동작제어방법
US8599708B2 (en) * 2010-01-14 2013-12-03 Qualcomm Incorporated Channel feedback based on reference signal
JP5352513B2 (ja) * 2010-03-31 2013-11-27 株式会社日立製作所 無線通信システム及びハンドオーバー制御方法
US8892094B2 (en) * 2010-06-15 2014-11-18 Telefonaktiebolaget L M Ericsson (Publ) Cell search and measurement in heterogeneous networks
CN106100793B (zh) * 2010-06-21 2019-06-28 瑞典爱立信有限公司 用于无线网络中参数的信号传送的方法和装置
CN102340379B (zh) * 2010-07-15 2015-04-22 中国移动通信集团公司 一种csi-rs的发送方法、检测方法及其装置
US9936490B2 (en) * 2010-09-03 2018-04-03 Panasonic Intellectual Property Corporation Of America Wireless communication system, low transmission power cell base station, macrocell base station, wireless terminal, and load distribution method
WO2012067430A2 (ko) * 2010-11-16 2012-05-24 엘지전자 주식회사 제어 정보를 제공하는 방법 및 이를 위한 장치
KR101740371B1 (ko) * 2010-11-22 2017-06-08 삼성전자 주식회사 셀룰라 이동 통신 시스템의 안테나 할당 장치 및 방법
US8918096B2 (en) * 2011-07-15 2014-12-23 Nokia Corporation Method and apparatus providing multi-level proximity indication and small cell discovery
US9204354B2 (en) * 2011-08-11 2015-12-01 Mediatek Inc. Method for small cell discovery in heterogeneous network
US9253713B2 (en) * 2011-09-26 2016-02-02 Blackberry Limited Method and system for small cell discovery in heterogeneous cellular networks
US20130188624A1 (en) * 2012-01-20 2013-07-25 Jung Seung Lee Apparatus and method for searching neighbor cells of small cell base station
US8767581B2 (en) * 2012-03-28 2014-07-01 Sharp Laboratories Of America, Inc. Coordinated multipoint (CoMP) radio resource management (RRM) measurement
US8559917B1 (en) * 2012-03-30 2013-10-15 Alcatel Lucent Method, apparatus and computer readable medium for associating user equipment with a cell
CN103581993B (zh) * 2012-07-31 2017-05-10 财团法人工业技术研究院 小型小区检测方法以及使用所述方法的设备
JP6045843B2 (ja) * 2012-07-31 2016-12-14 株式会社Ｎｔｔドコモ 通信システム、基地局装置、移動端末装置及び通信方法
WO2014024001A1 (en) * 2012-08-08 2014-02-13 Nokia Siemens Networks Oy Interference reduction through cell activation methods in heterogeneous networks
US9596644B2 (en) * 2012-09-03 2017-03-14 Nokia Technologies Oy Local cell discovery in macro-assisted enhanced local area

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101784039A (zh) * 2009-01-20 2010-07-21 华为技术有限公司 激活通信设备的方法、网络侧设备及网络系统
CN102238663A (zh) * 2010-05-06 2011-11-09 电信科学技术研究院 一种基站进入工作状态的方法、系统和装置
WO2012094608A2 (en) * 2011-01-07 2012-07-12 Interdigital Patent Holdings, Inc. Communicating channel state information (csi) of multiple transmission points
CN102883408A (zh) * 2012-09-21 2013-01-16 中兴通讯股份有限公司 一种小小区的发现方法和装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2876941A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016018964A1 (en) * 2014-07-31 2016-02-04 Microsoft Technology Licensing, Llc Cell discovery
CN107113588A (zh) * 2014-07-31 2017-08-29 微软技术许可有限责任公司 小区发现

Also Published As

Publication number Publication date
CN102883408A (zh) 2013-01-16
IN2015DN02641A (zh) 2015-09-18
KR20150038548A (ko) 2015-04-08
EP2876941A1 (en) 2015-05-27
MX346839B (es) 2017-03-31
BR112015006025A2 (pt) 2019-11-19
JP6364410B2 (ja) 2018-07-25
MX2015003580A (es) 2015-06-22
EP2876941B1 (en) 2019-01-02
AU2013317438B2 (en) 2016-04-28
JP2015527018A (ja) 2015-09-10
RU2015109995A (ru) 2016-11-10
EP2876941A4 (en) 2015-10-14
RU2606560C2 (ru) 2017-01-10
CN102883408B (zh) 2017-04-05
AU2013317438A1 (en) 2015-02-26
HK1205404A1 (zh) 2015-12-11
KR101644281B1 (ko) 2016-07-29
CA2881277C (en) 2020-01-07
CA2881277A1 (en) 2014-03-27
US20150215852A1 (en) 2015-07-30

Similar Documents

Publication Publication Date Title
WO2014044132A1 (zh) 一种小小区的发现方法和装置
TWI803583B (zh) Wus和rrm量測之間的互動
US10660046B2 (en) Systems and methods for network adaptation support in wireless network
CN111316699A (zh) 从基于优先级的重选机制切换到基于排名的重选机制
US10306533B2 (en) Methods and apparatuses for facilitating dormant cell discovery
CN104737599B (zh) 用于从处于较不活跃模式中的小区或网络接收定时信息的方法和装置
US20160286483A1 (en) Procedures for Controlling Alternative Radio-Access Technology (RAT) in Multi-RAT Capable Terminals
CN111316752A (zh) 无线电网络节点、无线设备以及其中执行的方法
CN106537964A (zh) 用于网络适配和利用下行链路发现参考信号的设备、网络和方法
WO2014110816A1 (zh) 测量方法、小区测量方法、装置及通信节点
CN105359584B (zh) 小区的发现和测量方法、基站以及用户设备
WO2013026319A1 (zh) 小区测量方法、信息处理方法、终端、基站和网络系统
CN105050124B (zh) 异构蜂窝网络基于业务感知的站间频谱资源聚合方法
WO2014040558A1 (zh) 小小区的配置方法及装置
CN103858467A (zh) 协作多点测量方法、基站与用户设备
WO2014177077A1 (zh) 一种状态转换预处理方法、装置和系统
KR20150114442A (ko) 무선 통신 시스템에서 스몰 셀 배치 및 액세스를 제공하는 방법 및 시스템
WO2022057520A1 (zh) 一种配置载波的方法和装置
KR20150114890A (ko) 단말의 세컨더리 셀 동작 제어 방법 및 그 장치
WO2014079008A1 (zh) 新载波类型小区的测量方法、用户设备和基站
CN113543192B (zh) 一种测量配置方法及装置
WO2012040912A1 (zh) 一种载波测量方法和系统
CN104105172B (zh) 信息传输系统及方法
CN104105113A (zh) 信息传输系统、方法及装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13838797

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 14419622

Country of ref document: US

ENP Entry into the national phase

Ref document number: 2881277

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2013838797

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2013317438

Country of ref document: AU

Date of ref document: 20130910

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2015528864

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 20157005457

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: MX/A/2015/003580

Country of ref document: MX

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: IDP00201501879

Country of ref document: ID

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112015006025

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 2015109995

Country of ref document: RU

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 112015006025

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20150318

ENPC Correction to former announcement of entry into national phase, pct application did not enter into the national phase

Ref document number: 112015006025

Country of ref document: BR

Kind code of ref document: A2

Free format text: ANULADA A PUBLICACAO CODIGO 1.3 NA RPI NO 2426 DE 04/07/2017 POR TER SIDO INDEVIDA.

REG Reference to national code

Ref country code: BR

Ref legal event code: B01E

Ref document number: 112015006025

Country of ref document: BR

Kind code of ref document: A2

Free format text: APRESENTAR A TRADUCAO SIMPLES DA FOLHA DE ROSTO DA CERTIDAO DE DEPOSITO DA PRIORIDADE CN 201210353418.1 DE 21/09/2012 OU DECLARACAO CONTENDO, OBRIGATORIAMENTE, TODOS OS DADOS IDENTIFICADORES DESTA (DEPOSITANTE(S), INVENTOR(ES), NUMERO DE REGISTRO, DATA DE DEPOSITO E TITULO), CONFORME O PARAGRAFO UNICO DO ART. 25 DA RESOLUCAO 77/2013, UMA VEZ QUE NAO FOI POSSIVEL DETERMINAR O(S) TITULAR(ES) DA CITADA PRIORIDADE, NEM SEUS INVENTORES, INFORMACAO NECESSARIA PARA O EXAME.

ENP Entry into the national phase

Ref document number: 112015006025

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20150318