WO2013013573A1 - 小区切换方法、基站设备和用户设备 - Google Patents

小区切换方法、基站设备和用户设备 Download PDF

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Publication number
WO2013013573A1
WO2013013573A1 PCT/CN2012/078409 CN2012078409W WO2013013573A1 WO 2013013573 A1 WO2013013573 A1 WO 2013013573A1 CN 2012078409 W CN2012078409 W CN 2012078409W WO 2013013573 A1 WO2013013573 A1 WO 2013013573A1
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WIPO (PCT)
Prior art keywords
base station
user equipment
information
target base
partial
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PCT/CN2012/078409
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English (en)
French (fr)
Inventor
时洁
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华为技术有限公司
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Publication of WO2013013573A1 publication Critical patent/WO2013013573A1/zh

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Classifications

    • 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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • 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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points
    • 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

Definitions

  • Embodiments of the present invention relate to the field of communication technologies, and more particularly, to a cell handover method, a base station device, and a user equipment. Background technique
  • Heterogeneous networks can improve the coverage and capacity of mobile networks.
  • a small base station such as a Pico (micro base station), a HeNB (Home eNB, a home base station), and a Femto (a pico base station) are placed in the coverage of a Macro eNB (macro base station). ), Relay (relay base station) and other wireless access points.
  • the UE User Equipment
  • All base stations can be deployed in the same frequency or in different frequency.
  • the maximum capacity that a heterogeneous network system can obtain is the sum of the capacities of the macro base station and the small base station.
  • the entire communication system has higher capacity than the conventional LTE macro base station network.
  • the heterogeneous deployment of these small base stations and macro base stations can effectively enhance network coverage and improve spectrum efficiency.
  • Small base stations can access the network in wired or wireless mode.
  • network deployment is complex. There is a phenomenon in which a UE passes through a heterogeneous network at a high speed and traverses the coverage of one or more small base stations within the coverage of the macro base station.
  • the UE should switch to a small base station to reduce the load of the macro base station. This requires the source base station and the target base station and the core network to exchange and switch related information, and the uplink and downlink data pipes connected to the core network are switched from the source base station to the target base station.
  • the data of the UE is divided into uplink data and downlink data, and uplink data is sent from the UE to the base station, and then The station is transferred to the core network.
  • the downlink data is sent from the core network to the base station, and then transmitted by the base station to the UE.
  • the UE needs to listen to the control domain part and the data domain part of the downlink channel of the wireless channel.
  • the UE also uses the data domain of the uplink channel to transmit its own data information, and the control domain of the uplink channel transmits uplink related control information.
  • the serving cell of the current UE is a macro base station
  • the UE performs event, or periodically triggered measurements on the serving cell and surrounding neighbor cells, and each carrier frequency. When the measurement meets certain conditions, the UE reports the measured result to the macro base station. If the macro base station decides to handover the UE to the small base station, it will initiate a handover request to the small base station. If the small base station agrees to the handover request, it will reply to the handover request response message, and carry the relevant information of the target base station to the UE in the message for the UE to wirelessly access the target base station. The source base station forwards the information to the UE by using a handover command message, and the UE starts a random access procedure to the small base station on the wireless interface, and accesses the target base station.
  • the macro base station when the macro base station obtains the handover request response message, the macro base station can transfer the downlink data obtained from the CN (Core Network) to the small base station, and the small base station succeeds in accessing the UE. , send down the data.
  • the small base station simultaneously provides a conversion message Pathswitch (Path Switch) of the downlink data channel of the core network and the base station side to the core network.
  • the core network transfers the downlink data channel to the small base station side.
  • the core network transmits the downlink data packet to the target base station, and adds an end mark to the data packet of the source base station, that is, the macro base station.
  • the macro base station For the uplink data, when the macro base station obtains the handover request response message, the macro base station transmits the uplink data obtained by the UE to the core network, and transfers the sequence number of the last uplink data packet to the small base station. After the UE successfully accesses the small base station, the small base station initiates uplink data transmission to the CN network based on the data packet sequence number and the CN server pipe address information in the handover request message.
  • the process in which the UE leaves the small base station to switch to the macro base station is similar. However, if the UE moves at a high speed and the coverage of the small base station is small, the UE leaves in a short time after switching to the small base station. This short-term handover increases the interaction burden between the base station and the core network, and the throughput gain is not obvious. Especially in the scenario of continuously traversing several small base stations, this continuous switching brings a system burden. Summary of the invention
  • the embodiment of the invention provides a cell handover method, a base station device and a user equipment, which can reduce the interaction burden during handover.
  • a cell handover method including: determining, according to a measurement report sent by a user equipment, and/or a moving speed of the user equipment, a cell handover type of the user equipment is a partial handover type, where, in the partial handover type, the user equipment The PDCCH needs to be handed over to the target base station; a partial handover request is sent to the target base station, and the partial handover request is used to request the target base station to configure the PDCCH monitored by the user equipment.
  • a method for reporting a measurement report including: the macro base station broadcasts the identification information and/or the carrier frequency information of the small base station to the user equipment, or sends a measurement configuration to the user equipment, where the measurement configuration includes the small base station.
  • the measurement report carries the measurement result corresponding to the measurement configuration.
  • a cell handover method including: receiving a partial handover request sent by a source base station, where the partial handover request is used to request the target base station to configure a physical downlink control channel PDCCH monitored by the user equipment; and sending a partial handover request to the source base station.
  • the response message or the handover preparation failure message indicates that the target base station agrees to the partial handover request, and the handover preparation failure message indicates that the target base station rejects the partial handover request.
  • a cell handover method including: receiving a partial handover command sent by a source base station, a partial handover command corresponding to a partial handover type, and in a partial handover type, a user equipment object
  • the downlink control channel PDCCH needs to be handed over to the target base station; based on the partial handover command, the switched PDCCH is monitored, and the switched PDCCH is configured by the target base station for the user equipment.
  • a method for reporting a measurement report including: receiving identifier information and/or carrier frequency information of a small base station broadcast by a base station, or receiving a measurement configuration sent by a base station, where the measurement configuration includes identifier information of the small base station And transmitting the measurement report to the base station, where the measurement report carries the identification information and/or the carrier frequency information of the corresponding small base station when receiving the identification information and/or the carrier frequency information of the small base station broadcast by the base station, Or, when receiving the measurement configuration sent by the base station, the measurement report carries the measurement result corresponding to the measurement configuration.
  • a base station device including: a determining unit, configured to determine, according to a measurement report sent by the user equipment and/or a moving speed of the user equipment, that the cell switching type of the user equipment is a partial switching type, where the partial switching is performed.
  • the PDCCH of the user equipment needs to be handed over to the target base station; the requesting unit is configured to send a partial handover request to the target base station, where the partial handover request is used to request the target base station to configure the physical downlink control channel PDCCH monitored by the user equipment.
  • a base station device including: a receiving unit, configured to receive a partial handover request sent by a source base station, where the partial handover request is used to request the base station device to configure a physical downlink control channel PDCCH monitored by the user equipment; Sending a response message to the partial base station or a handover preparation failure message to the source base station, the response message indicating that the target base station agrees to the partial handover request, and the handover preparation failure message indicates that the target base station rejects the partial handover request.
  • a base station device including: a sending unit, configured to broadcast, to a user equipment, identification information and/or carrier frequency information of a small base station, or send a measurement configuration to the user equipment, where the measurement configuration includes an identifier of the small base station And a receiving unit, configured to receive a measurement report sent by the user equipment, where the measurement report carries the identifier of the corresponding small base station when the identification information and/or the carrier frequency information of the small base station is broadcast to the user equipment The information and/or the carrier frequency information, when the measurement configuration is sent to the user equipment, the measurement report carries the measurement result corresponding to the measurement configuration.
  • a user equipment including: a receiving unit, configured to receive identification information and/or carrier frequency information of a small base station broadcast by a base station, or receive a measurement configuration sent by a base station, where The quantity configuration includes the identification information and/or the carrier frequency information of the small base station, and the sending unit is configured to send the measurement report to the base station, where the measurement report carries the corresponding information when receiving the identification information and/or the carrier frequency information of the small base station broadcast by the base station.
  • the identification information and/or carrier frequency information of the small base station, or when receiving the measurement configuration sent by the base station the measurement report carries the measurement result corresponding to the measurement configuration.
  • a user equipment including: a receiving unit, configured to receive a partial handover command sent by a source base station, a partial handover command corresponding to a partial handover type, and in a partial handover type, a physical downlink control channel PDCCH of the user equipment
  • the eNB needs to switch to the target base station, and the monitoring unit is configured to monitor the PDCCH after the handover according to the partial handover command, where the PDCCH after the handover is configured by the target base station for the user equipment.
  • the service of the user equipment may be partially switched, and the PDCCH monitored by the user equipment is configured by the target base station, instead of all the services of the user equipment are switched to the target base station, thereby reducing the interaction burden during handover.
  • FIG. 1 is a flow chart of a cell handover method according to an embodiment of the present invention.
  • FIG. 2 is a flow chart of a cell handover method according to another embodiment of the present invention.
  • FIG. 3 is a schematic flow chart of a handover procedure in accordance with one embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a handover procedure according to another embodiment of the present invention.
  • FIG. 5 is a flow chart of a method of reporting a measurement report in accordance with one embodiment of the present invention.
  • FIG. 6 is a flow chart of a method of reporting a measurement report in accordance with one embodiment of the present invention.
  • FIG. 7 is a flowchart of a cell handover method according to an embodiment of the present invention.
  • Figure 8 is a block diagram of a base station device in accordance with one embodiment of the present invention.
  • 9 is a block diagram of a base station device in accordance with another embodiment of the present invention.
  • FIG. 10 is a block diagram of a base station device according to another embodiment of the present invention.
  • FIG. 11 is a block diagram of a base station device in accordance with another embodiment of the present invention.
  • FIG. 12 is a block diagram of a base station device according to another embodiment of the present invention.
  • Figure 13 is a block diagram of a user equipment in accordance with one embodiment of the present invention.
  • Figure 14 is a block diagram of a user equipment in accordance with another embodiment of the present invention.
  • FIG. 15 is a block diagram of a user equipment in accordance with another embodiment of the present invention. detailed description
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • a user equipment which may also be called a mobile terminal (Mobile Terminal), a mobile user equipment, etc., may communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network).
  • the user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer having a mobile terminal function, for example, a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device, Exchange language and/or data with the wireless access network.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or eNodeB, evolutional Node B) in LTE, the present invention It is not limited, but for convenience of description, the following embodiments are described by taking an eNB as an example.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved base station
  • eNodeB evolutional Node B
  • FIG. 1 is a flow chart of a cell handover method according to an embodiment of the present invention.
  • the method of Figure 1 is sourced
  • the base station performs, for example, execution by a base station of the current serving user equipment.
  • the cell switching type of the user equipment is a partial switching type, where in the partial switching type, the user equipment
  • the PDCCH needs to be handed over to the target base station.
  • the base station of the current serving UE is a macro base station, and there are one or more small base stations in the vicinity of its coverage or coverage.
  • the macro base station can determine whether the handover is needed according to the measurement report of the UE and/or the moving speed of the UE.
  • the measurement report may include identification information and/or carrier frequency information of the small base station.
  • the identification information and/or carrier frequency information of the small base station may be carried by the macro base station to the UE in advance in the broadcast.
  • the macro base station may send a measurement configuration to the UE to trigger the UE to send a measurement report corresponding to the measurement configuration.
  • the measurement configuration may include identification information and/or carrier frequency information of the small base station and other parameters required for measurement, such as measurement report thresholds of the reference signal.
  • the measurement report corresponding to the measurement configuration can be carried in the measurement report.
  • the macro base station can identify the information of the small base station according to the measurement report, thereby determining whether the UE performs handover and the type of handover.
  • the macro base station finds that the channel quality between the UE and the small base station is better according to the measurement report, and can determine that the UE partially or completely switches to the small base station.
  • the partial handover type in the embodiment of the present invention refers to a PDCCH (Physical Downlink Control Channel) that is monitored by the user equipment by the target base station.
  • the PDSCH (Physical Downlink Shared Channel) channel monitored by the user equipment may still be configured by the source base station or partially or wholly by the target base station. In the case that the PDSCH is all configured by the target base station, the uplink and downlink data of the UE may still be the anchor node of the source base station.
  • the partial handover type only the PDCCH of the UE is switched to the target base station, and the uplink and downlink data of the UE may still be the anchor node of the source base station.
  • All the handover types in the embodiment of the present invention are similar to the handover processing in the prior art. After the handover is completed, all the channels of the UE are configured by the target base station, and the uplink and downlink data of the UE pass through the target base station and the core network. The channel between the source and the base station translates the channel resources of the UE.
  • the UE's moving speed may be further considered when determining the type of handover. For example, it is assumed that the channel quality between the UE and the small base station has met the conditions specified by all handover types, but the UE moves faster. If the UE is all switched to the small base station, the UE may The small base station will leave soon, and the UE must switch back to the macro base station again or switch to other small base stations. This short-term handover increases the interaction burden between the base station and the core network, and the throughput gain is not obvious. Therefore, it is considered that only partial handover is performed on the UE, and the PDCCH monitored by the UE is allocated to the small base station configuration, thereby saving the interaction burden on the network side.
  • the mobile state of the UE may be determined according to the number of times of cell replacement occurring at a predetermined time, and the mobile state of the UE is divided into three levels in LTE, that is, High-mobility. Status, Medium-mobility status and Normal-mobility status. Based on the mobile state of the UE, speed-based scaling of parameters for UE handover or cell reselection is performed.
  • the partial handover request may further include other related information.
  • the partial handover request may include resource information of the PDSCH of the UE, such as the allocated PDSCH resource block information, corresponding.
  • the partial handover request in this embodiment corresponds to the partial handover type.
  • the service of the user equipment may be partially switched, that is, only the PDCCH of the UE is switched to the target base station, and the PDCCH monitored by the user equipment is configured by the target base station, instead of all the services of the user equipment are switched to the target base station, thereby reducing The interaction burden at the time of switching.
  • FIG. 2 is a flow chart of a cell handover method according to another embodiment of the present invention.
  • the method of Figure 2 is performed by the target base station, e.g., by the target base station to which the user equipment may be partially handed over.
  • the partial handover request may be a partial handover request sent by the source base station in the above 102, and thus the description will not be repeated.
  • 202 Send, to the source base station, a response message for the partial handover request or a handover preparation failure message, where the response message indicates that the target base station agrees to the partial handover request, and the handover preparation failure message indicates that the target base station rejects the partial handover request.
  • the target base station can determine whether to agree to the partial handover request according to its own operating state, such as its own load situation.
  • the service of the user equipment may be partially switched, and the PDCCH monitored by the user equipment is configured by the target base station, instead of all the services of the user equipment are switched to the target base station, thereby reducing the interaction burden during handover.
  • Figure 3 is a schematic flow diagram of a handover procedure in accordance with one embodiment of the present invention.
  • the LTE architecture is taken as an example, the source base station is a macro base station eNB, the target base station is a small base station pico, the mobility management network element is an MME (Mobility Management Entity, mobility management entity), and the serving gateway is S-GW (Serving Gateway).
  • the small base station may include an RRH (Remote Radio Head) or the like.
  • the mobility management network element may be an SGSN (Serving GPRS Support Node) or an S4-SGSN.
  • the macro base station may be referred to as a NodeB, a BTS, or the like.
  • the source base station and the target base station are deployed in the same frequency, and the source base station requests the target base station to configure the PDCCH monitored by the UE, but still sends downlink data to the UE through the PDSCH of the source base station.
  • the UE sends a measurement report to the macro base station eNB.
  • the UE may be based on a measurement result of the identification information such as a carrier frequency and/or a cell ID (identification), where the cell ID may be a PCI (Physical Cell Identity) of the cell or ECGI (Evolved Cell Global Identifier).
  • identification information such as a carrier frequency and/or a cell ID (identification), where the cell ID may be a PCI (Physical Cell Identity) of the cell or ECGI (Evolved Cell Global Identifier).
  • the macro base station determines, according to the measurement report of the UE, the channel quality between the UE and the small base station and the macro base station, and refers to the moving speed of the UE, and determines whether to initiate a subsequent handover procedure.
  • the information indicating whether it is a small base station can be judged by PCI or ECGI or frequency in the measurement report reported by the UE, or a combination thereof.
  • the macro base station decides to switch the configuration function of the PDCCH monitored by the UE to the small base station, but the PDSCH of the macro base station is still reserved for the UE.
  • the macro base station initiates a partial handover request message of the partial handover type.
  • the partial handover request message includes an indication that the PDCCH monitored by the UE is configured by the small base station, and the macro base station may further send the resource information of the PDSCH of the downlink data of the UE, and the time-frequency location information and the spatial location information of the resource block used by the PDSCH. , codec parameters, etc. are transmitted to the small base station.
  • the small base station configures PDCCH scheduling information or other control information of the user equipment according to the resource information delivered by the macro base station. For example, a small base station considers that the macro base station will be at the same frequency PDSCH location. If the information is sent, the signal may not be sent at the corresponding time-frequency resource location, or the time-frequency resource may be used by other UEs in other spatial locations so as not to interfere with the UE.
  • the small base station sends a handover request response message to the macro base station.
  • the response message may carry PDCCH information of the target base station, so that the macro base station sends the PDCCH information to the UE.
  • the PDCCH information may include the number of PDCCH subframes used and the like.
  • the handover preparation failure message may be transmitted to the macro base station.
  • the reason for the failure may be carried in the handover preparation failure message.
  • the macro base station initiates a partial handover command to the UE, and notifies the UE to switch to the target cell.
  • This partial switching command can be similar to an existing switching command.
  • the partial handover command may include not only the existing scrambling code information for the RACH, but also the resource information of the PDSCH of the macro base station, such as the allocated PDSCH resource block information, the corresponding codec information, and the corresponding reference signal. Information, etc.
  • the partial handover command may also include PDCCH information that the small base station transmits to the macro base station in 305.
  • the UE initiates an access request to the target small base station according to the partial handover command.
  • the small base station sends an access response to the UE, and the UE completes partial handover to the small base station. Thereafter, the UE obtains downlink data information from the PDSCH of the macro base station, and the macro base station obtains ACK/NACK feedback of the downlink data of the UE from the small base station, that is, the HARQ feedback information of the UE to the downlink data.
  • the uplink data of the UE is sent to the small base station, and the HARQ of the uplink data is fed back from the PHICH (Physical HARQ Indication Channel) of the small base station.
  • PHICH Physical HARQ Indication Channel
  • the UE may continue to measure the channel quality of the macro base station, and report the measurement result to the macro base station through an interface between the uplink channel between the UE and the small base station, the small base station, and the macro base station.
  • the Acer station can adjust the resource information of its own PDSCH, such as codec and other parameters, and the adjusted PDSCH resource information is transmitted to the UE through the PDCCH of the small base station.
  • the small base station may select to directly establish an uplink channel with the core network to send uplink data from the UE after the UE accesses the small base station, or may select to pass between the small base station and the macro base station.
  • the X2 interface and the existing channel between the macro base station and the core network transmit uplink data.
  • the UE listens to the PDCCH/PHICH of the small base station and listens to the PDSCH of the macro base station.
  • the data or downlink data may refer to a data block processed by the MAC protocol, or may be a PDCP (Packet Data Convergence Protocol) data packet.
  • PDCP Packet Data Convergence Protocol
  • the small base station switches all channels of the UE to itself when the data plane switching condition is met. For example, the PDCCH (the PDCCH/PHICH of the small base station, the PDSCH of the macro base station that the UE listens to the small base station) continues to exceed the first time period D1, or the channel quality of the small base station detected by the UE continues to be higher than the threshold second time period D2, or After detecting that the speed of the UE decreases or stops the third period D3, for the downlink data, the small base station sends a path switch request to the MME to request to transfer the downlink channel of the core network to the target base station; and, for the uplink data, The small base station can send the uplink data of the user equipment to the core network through an uplink channel established with the core network.
  • the PDCCH the PDCCH/PHICH of the small base station, the PDSCH of the macro base station that the UE listens to the small base station
  • the small base station sends a path switch request to the MME to request to
  • the above-mentioned time periods D1, D2 and/or D3 may be determined by the source base station and the target base station through negotiation, or the target base station may store the predetermined D1, D2 and/or D3, or the source base station may carry D1, D2 and/or D3 in the partial handover.
  • the request message it is sent to the target base station, or O3 (Operation Administration and Maintenance; Network Management System) sets D1, D2, and/or D3.
  • the path switching process is similar to the existing path switching process.
  • the small base station initiates a Path switch request to the MME (311), and the MME sends a user plane update request to the S-GW (312).
  • the S-GW performs a handover path (313) according to the user plane update request, transfers the downlink channel of the CN to the small base station, and then sends a username update request acknowledgement message (314) to the MME, and the MME sends a path switch request acknowledgement message to the small base station (315). ).
  • the macro base station If the previous macro base station does not transmit the TNL (Transport Network Layer) address of the CN to the small base station, the macro base station transmits the TNL address information of the CN pipe to the small base station or the small base station requests the CN base pipe from the macro base station or the MME. TNL address information, so that the small base station obtains the TNL address information of the CN pipe. Moreover, the small base station selects to transmit uplink data through itself and the CN's uplink channel, and no longer uses the macro base station as an anchor point for data transmission.
  • TNL Transport Network Layer
  • the embodiment of the present invention can partially switch the service of the user equipment, and the target base station configures the PDCCH monitored by the user equipment, instead of switching all the services of the user equipment to the target base station, thereby reducing the interaction burden during handover.
  • the PDSCH information of the UE is acquired from the macro base station. If considering the Coordinated Multiple Point (CoMP) technology, the small base station can also use its own PDSCH for scheduling information of the UE.
  • 4 is a schematic flow chart of a handover procedure according to another embodiment of the present invention.
  • the method of using the PDSCH for CoMP can be negotiated between the macro base station and the small base station.
  • the same or similar portions as those of FIG. 3 are denoted by the same reference numerals, and detailed description is omitted.
  • Figure 4 differs from Figure 3 in that:
  • the macro base station sends a partial handover request to the small base station.
  • the macro base station and the small base station negotiate the relevant parameters of the PDSCH based on CoMP.
  • the source base station and the target base station negotiate resource information for the PDSCH of the CoMP, and determine that the transport block is generated by the source base station or the target base station.
  • the downlink data packet for example, the PDCP data packet
  • MAC Media Access Control, Media Access Control
  • the partial transport block is used according to the negotiated PDSCH resource information. It is sent to the user equipment through the target base station.
  • the source base station when it is determined that the transport block is generated by the target base station, the source base station sends the downlink data packet for the user equipment to the target base station, so that the target base station performs MAC processing on the downlink data packet to generate a transport block.
  • the target base station may transmit all of the transport blocks to the source base station, or transmit part of the transport blocks to the source base station according to the CoMP needs.
  • the embodiment of the present invention may perform partial handover on the user equipment, and the target base station configures the PDCCH monitored by the user equipment and transmits a part of the data packet according to the CoMP requirement, instead of all the user equipments being switched to the target base station, thereby reducing the interaction at the time of handover. burden.
  • the UE may select to occupy the radio resources of the small base station from the perspective of improving system capacity.
  • downlink data is transmitted to the user equipment through the PDSCH of the target base station, but the source base station serves as an anchor point for the uplink data and downlink data of the user equipment. That is, in the downlink direction, the source base station receives downlink data for the user equipment from the core network, and transmits the downlink data to the target base station, so that the target base station forwards the downlink data to the user equipment.
  • the target base station receives the uplink data from the user equipment, and forwards the uplink data to the source base station, and the source base station sends the uplink data to the core network through a channel between the source network and the core network.
  • the macro base station finds that the target small base station that can be handed over from the measurement report of the UE is an inter-frequency deployment, and may choose to switch the uplink and downlink of the UE to a small size when initiating a partial handover request.
  • the base station increases the wireless system capacity of the small base station cell, but the data stream is still connected to the CN by using the macro base station as an anchor point. Only when the signal of the small base station is stable, that is, the condition described in 310 in the embodiment of FIG. 3 is met, the small base station may initiate a CN handover update message, which will be The channels for the core and downlink to the core network are all switched to themselves.
  • the indication information may be implicitly or explicitly added to the handover request message to indicate the type of handover described above.
  • the embodiment of the present invention may perform partial handover on the service of the user equipment, and the target base station configures the PDCCH and the PDSCH monitored by the user equipment, but the source base station still acts as the data anchor of the user equipment, instead of switching all the services of the user equipment to The target base station, thereby reducing the interaction burden at the time of handover.
  • FIG. 5 is a flow chart of a method of reporting a measurement report in accordance with one embodiment of the present invention.
  • the method of Figure 5 is performed by a base station, such as by a macro base station of the current serving user equipment.
  • the identification information and/or the carrier frequency information of the small base station to the user equipment, or send the measurement configuration to the user equipment, where the measurement configuration includes the identifier information of the small base station and/or the carrier frequency information.
  • the identification information of the small base station may select the PCI or ECGI identity of the cell.
  • the measurement configuration may include identification information and/or carrier frequency information of the small base station and other parameters required for measurement, such as a measurement report threshold of the reference signal.
  • the broadcast small base station may be within the coverage of the macro base station or adjacent to the macro base station.
  • the identification information and/or carrier frequency information of the small base station or the measurement configuration described above is configured by the network management system to the macro base station, and is transmitted by the macro base station to the user equipment.
  • the measurement report received in 502 carries the identification information and/or carrier frequency information of the corresponding small base station.
  • the measurement report received in 502 carries the measurement result corresponding to the measurement configuration.
  • the base station device in the embodiment of the present invention can identify that the base station corresponding to the measurement report sent by the user equipment is a small base station.
  • FIG. 6 is a flow chart of a method of reporting a measurement report in accordance with one embodiment of the present invention. The method of Figure 6 is performed by the user equipment.
  • the base station 601. Receive, by the base station, the identifier information and/or the carrier frequency information of the small base station that is in the coverage of the base station and/or the neighboring base station, or the measurement configuration that is sent by the base station, where the measurement configuration includes the “J. Identification information and/or carrier frequency information,
  • the measurement report Send a measurement report for the small base station to the base station.
  • the measurement report carries the identifier information and/or carrier frequency information of the corresponding small base station.
  • the measurement report carries the measurement result corresponding to the measurement configuration.
  • the base station device in the embodiment of the present invention can identify the small base station corresponding to the measurement report sent by the user equipment.
  • the base station may determine the handover type of the user equipment based on the measurement report sent by the user equipment according to the method of FIG. 6, and issue a partial handover request to the target base station.
  • the target base station agrees to the partial handover
  • the source base station transmits a partial handover command to the user equipment (for example, refer to 306 in Fig. 3 and Fig. 4).
  • the user equipment After receiving the partial handover command sent by the base station, the user equipment monitors the PDSCH of the source base station according to the partial handover command, and monitors the PDCCH of the small base station. Optionally, the user equipment can also listen to the PHICH of the small base station according to the partial handover command.
  • the user equipment may continue to measure the channel quality information of the source base station, and send the channel quality information to the source base station through the small base station, so that the source base station adjusts the resource information of the PDSCH according to the channel quality information.
  • the source base station sends the adjusted resource information of the PDSCH to the user equipment through the target base station.
  • FIG. 7 is a flowchart of a cell handover method according to an embodiment of the present invention. The method of Figure 7 is performed by the user device.
  • the service of the user equipment may be partially switched, and the PDCCH monitored by the user equipment is configured by the target base station, instead of all the services of the user equipment are switched to the target base station, thereby reducing the interaction burden during handover.
  • the user equipment may receive downlink data by using a PDSCH of the source base station.
  • the user equipment can receive downlink data through the PDSCH of the target base station, where the source base station acts as an anchor point for the downlink data and the uplink data of the user equipment.
  • the source base station is a macro base station
  • the target base station is a small base station.
  • Figure 8 is a block diagram of a base station device in accordance with one embodiment of the present invention.
  • An example of the base station device 80 of FIG. 8 is a base station of the current serving user equipment, including a determining unit 81 and a requesting unit 82.
  • the determining unit 81 and the requesting unit 82 may be processors.
  • the determining unit 81 determines, according to the measurement report sent by the user equipment and/or the moving speed of the user equipment, that the cell switching type of the user equipment is a partial handover type, wherein in the partial handover type, the PDCCH of the user equipment needs to be handed over to the target base station.
  • the requesting unit 82 sends a partial handover request to the target base station when the determining unit 81 determines that the cell switching type is the partial handover type, and the partial handover request is used to request the target base station to configure the PDCCH monitored by the user equipment.
  • the service of the user equipment may be partially switched, and the PDCCH monitored by the user equipment is configured by the target base station, instead of all the services of the user equipment are switched to the target base station, thereby reducing the interaction burden during handover.
  • FIG. 9 is a block diagram of a base station device in accordance with another embodiment of the present invention.
  • the same or similar portions as those in Fig. 8 are denoted by the same reference numerals, and the detailed description is omitted as appropriate.
  • the base station device 90 further includes a transmitting unit 83, which may be an interface unit.
  • transmission unit 83 transmits downlink data to the user equipment over the PDSCH of the source base station.
  • the transmitting unit 83 receives the HARQ feedback information of the user equipment for the downlink data from the target base station.
  • the partial handover request of the requesting unit 82 may include resource information of the PDSCH of the user equipment, so that the target base station configures PDCCH scheduling information or other control information of the user equipment according to the resource information.
  • the transmission unit 83 may further receive a response message of the partial handover request from the target base station, where the response message indicates that the target base station agrees to the partial handover request.
  • the response message may carry PDCCH information of the target base station.
  • the transmission unit 83 receives a handover preparation failure message of the partial handover request from the target base station, and the handover preparation failure message indicates that the target base station rejects the partial handover request.
  • the handover preparation failure message may carry the failure reason.
  • the base station device 90 determines that the target base station agrees to the partial handover request, and thus transmits the partial handover command to the user equipment through the transmission unit 83.
  • the partial handover command may include resource information of a PDSCH of the source base station and/or resource information of a PDCCH of the target base station.
  • the transmission unit 83 receives uplink data from the user equipment from the target base station and forwards the uplink data to the core network.
  • the user equipment may continue to measure channel quality information of the base station device 90, and the transmission unit 83 receives channel quality information of the source base station measured by the user equipment from the target base station, so that the base station device 90 can be based on the channel quality.
  • the information is adjusted, and the resource information of the PDSCH is adjusted, and the resource information of the adjusted PDSCH is transmitted to the user equipment through the target base station by using the transmission unit 83.
  • the base station apparatus 90 may further include a negotiating unit 84 in consideration of CoMP technology.
  • the negotiation unit 84 may be a processor that negotiates resource information for the PDSCH of the CoMP with the target base station, and determines that the transport block is generated by the source base station or the target base station. When it is determined that the transport block is generated by the source base station, the base station device 90 performs MAC processing on the downlink data packet to generate a transport block, and sends the partial transport block to the user equipment through the target base station according to the resource information of the negotiated PDSCH.
  • the base station device 90 transmits the downlink data packet for the user equipment to the target base station through the transmission unit 83, so that the target base station performs MAC processing on the downlink data packet, generates a transport block, and transmits the transport block.
  • Unit 83 receives some or all of the transport blocks generated by the target base station.
  • the source base station and the target base station are deployed in an inter-frequency manner, in the partial handover process, in addition to configuring the PDCCH of the user equipment by the target base station, the PDSCH of the target base station may be used to the user.
  • the device sends downlink data, and the source base station serves as an anchor point for uplink data and downlink data of the user equipment.
  • the service of the user equipment may be partially switched, and the PDCCH monitored by the user equipment is configured by the target base station, instead of all the services of the user equipment are switched to the target base station, thereby reducing the interaction burden during handover.
  • FIG. 10 is a block diagram of a base station device according to another embodiment of the present invention.
  • An example of the base station device 100 of FIG. 10 is a target base station, including a receiving unit 91 and a response unit 92.
  • the receiving unit 91 can be an interface unit
  • the response unit 92 can be a processor.
  • the receiving unit 91 receives a partial handover request sent by the source base station, where the partial handover request is used to request the base station device 90 to configure the PDCCH monitored by the user equipment.
  • the response unit 92 transmits a response message for the partial handover request or a handover preparation failure message to the source base station, the response message indicating that the target base station agrees to the partial handover request, and the handover preparation failure message indicates that the base station device 90 rejects the partial handover request.
  • the embodiment of the present invention may perform partial handover on the service of the user equipment, and the target base station configures the PDCCH monitored by the user equipment, instead of switching all the services of the user equipment to the target base station, thereby reducing There is less interaction burden when switching.
  • FIG. 11 is a block diagram of a base station device in accordance with another embodiment of the present invention.
  • the same or similar portions as those in Fig. 9 are denoted by the same reference numerals, and the detailed description is omitted as appropriate.
  • the base station device 110 further includes a negotiating unit 93, a management unit 94, and a transmitting unit 95.
  • Negotiation unit 93 and management unit 94 may be processors, and transmission unit 95 may be an interface unit.
  • the negotiating unit 93 can negotiate resource information for the PDSCH of the CoMP with the source base station.
  • the transmitting unit 95 transmits downlink data to the user equipment through the PDSCH of the base station device 100, wherein the source base station still serves as a fault point of the uplink data and the downlink data of the user equipment.
  • the receiving unit 91 further receives HARQ feedback information of the user equipment for downlink data, and the sending unit 95 sends the HARQ feedback information to the source base station.
  • the management unit 94 configures the PDCCH scheduling information or the control information of the user according to the resource information.
  • the receiving unit 91 is further configured to receive uplink data from the user equipment, and then the sending unit 95 forwards the uplink data to the source base station, so that the source base station forwards the uplink data to the core network, or sends the uplink data.
  • the unit 95 sends the uplink data to the core network through an uplink channel established with the core network.
  • the user equipment can continue to measure the channel quality information of the source base station.
  • the receiving unit 91 is further configured to receive channel quality information of the source base station measured by the user equipment, and the sending unit 95 forwards the channel measurement information to the source base station, so that the source base station adjusts the resource information of the PDSCH according to the channel quality information.
  • the receiving unit 91 then receives the resource information of the adjusted PDSCH from the source base station, and the transmitting unit 95 transmits the resource information of the adjusted PDSCH to the user equipment.
  • the management unit 94 after starting to schedule the PDCCH first time period D1 of the user equipment, or after the channel quality of the target base station detected by the user equipment is higher than the threshold second time period D2, or detecting the user equipment After the speed decreases or stops the third time period D3, the management unit 94 sends a path switch request to the mobility management network element to request that the downlink channel of the core network be transferred to the target base station.
  • the management unit 94 sends the uplink data of the user equipment to the core network through an uplink channel established between the core network and the core network.
  • the receiving unit 91 before receiving the path switching request to the mobility management network element, receives the address information of the core network channel sent by the source base station, or requests the source base station to send the address information of the core network channel.
  • the base station device 110 can negotiate with the source base station to determine the aforementioned time periods D1, 02, and/or D3, or the base station device 110 can store the predetermined D1, D2, and/or D3.
  • the source base station may carry the above period D1, D2 and/or D3 in the partial handover request message and send it to the base station apparatus 110.
  • D1, D2, and/or D3 can be configured by the network management system.
  • the service of the user equipment may be partially switched, and the PDCCH monitored by the user equipment is configured by the target base station, instead of all the services of the user equipment are switched to the target base station, thereby reducing the interaction burden during handover.
  • FIG. 12 is a block diagram of a base station device according to another embodiment of the present invention.
  • An example of the base station device 120 of FIG. 12 is a macro base station including a transmitting unit 121 and a receiving unit 122.
  • the transmitting unit 121 and the receiving unit 122 may be interface units.
  • the sending unit 121 broadcasts the identification information and/or the carrier frequency information of the small base station to the user equipment, or sends a measurement configuration to the user equipment, where the measurement configuration includes the identification information of the small base station and/or the carrier frequency information.
  • the receiving unit 122 receives the measurement report sent by the user equipment.
  • the sending unit 121 broadcasts the identification information and/or the carrier frequency information of the small base station to the user equipment
  • the measurement report received by the receiving unit 122 carries the identification information and/or carrier frequency information of the corresponding small base station.
  • the transmitting unit 121 delivers the measurement configuration to the user equipment
  • the measurement report received by the receiving unit 122 carries the measurement result corresponding to the measurement configuration.
  • the base station device in the embodiment of the present invention can identify the small base station corresponding to the measurement report sent by the user equipment.
  • the small base station is within the coverage of the base station 120 or adjacent to the base station 120, or the identification information and/or carrier frequency information or measurement configuration of the small base station is configured by the network management system to the base station 120.
  • FIG. 13 is a block diagram of a user equipment in accordance with one embodiment of the present invention.
  • the user equipment 130 of FIG. 13 includes a receiving unit 131 and a transmitting unit 132.
  • the receiving unit 131 and the transmitting unit 132 may be interface units.
  • the receiving unit 131 receives the identification information and/or the carrier frequency information of the small base station broadcasted by the base station, or receives the measurement configuration sent by the base station, where the measurement configuration includes the identification information of the small base station and/or the carrier frequency information.
  • the transmitting unit 132 transmits a measurement report to the base station. Wherein the receiving unit 131 receives the base station When the identification information and/or carrier frequency information of the small base station is broadcast, the measurement report sent by the transmitting unit 132 carries the identification information and/or carrier frequency information of the corresponding small base station. Or, when the receiving unit 131 receives the measurement configuration sent by the base station, the measurement report sent by the sending unit 132 carries the measurement result corresponding to the measurement configuration.
  • the base station device in the embodiment of the present invention can identify the small base station corresponding to the measurement report sent by the user equipment.
  • FIG. 14 is a block diagram of a user equipment in accordance with another embodiment of the present invention.
  • the same or similar portions as those in Fig. 13 are given the same reference numerals, and the detailed description is omitted as appropriate.
  • the user equipment 140 may further include a listening unit 133 and a measuring unit 134.
  • the listening unit 133 and the measuring unit 134 may be processors.
  • the receiving unit 131 is further configured to receive a partial handover command sent by the macro base station, and the intercepting unit 133 monitors the PDSCH of the macro base station according to the partial handover command received by the receiving unit 131, and monitors the small base station PDCCH.
  • the listening unit 133 can also monitor the PHICH of the small base station according to the partial handover command received by the receiving unit 131.
  • the measuring unit 134 measures channel quality information of the base station, and the sending unit 132 sends the channel quality information to the macro base station through the small base station, so that the macro base station adjusts the resource information of the PDSCH according to the channel quality information.
  • the receiving unit 131 then receives the resource information of the adjusted PDSCH from the macro base station from the target base station.
  • the service of the user equipment may be partially switched, and the PDCCH monitored by the user equipment is configured by the target base station, instead of all the services of the user equipment are switched to the target base station, thereby reducing the interaction burden during handover.
  • FIG. 15 is a block diagram of a user equipment in accordance with another embodiment of the present invention.
  • the user equipment 150 of FIG. 15 includes a receiving unit 151 and a listening unit 152.
  • the receiving unit 151 and the listening unit 152 may be an interface unit and a processor, respectively.
  • the receiving unit 151 receives the partial handover command sent by the source base station, and the partial handover command corresponds to the partial handover type, and in the partial handover type, the PDCCH of the user equipment 150 needs to be handed over to the target base station.
  • the monitoring unit 152 monitors the switched PDCCH based on the partial handover command, and the switched PDCCH is configured by the target base station for the user equipment 150.
  • the listening unit 152 receives downlink data by using a PDSCH of the source base station. Or the listening unit 152 receives the downlink data through the PDSCH of the target base station, where the source The base station serves as an anchor point for downlink data and uplink data of the user equipment.
  • the source base station is a macro base station
  • the target base station is a small base station.
  • the service of the user equipment may be partially switched, and the PDCCH monitored by the user equipment is configured by the target base station, instead of all the services of the user equipment are switched to the target base station, thereby reducing the interaction burden during handover.
  • a communication system may include the above-described base station device and/or user equipment.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separate, and the components displayed as the units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or a software functional unit. Formal realization.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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Abstract

一种小区切换方法、基站设备和用户设备，该方法包括：根据用户设备发送的测量报告和/或用户设备的移动速度，确定用户设备的小区切换类型；在确定小区切换类型为部分切换类型时，向目标基站发送部分切换请求，该部分切换请求用于请求目标基站配置用户设备监听的PDCCH。本发明实施例可以对用户设备的业务进行部分切换，由目标基站配置用户设备监听的PDCCH，而不是将用户设备的业务全部切换到目标基站，从而减少了切换时的交互负担。

Description

小区切换方法、 基站设备和用户设备
本申请要求于 2011 年 7 月 27 日提交中国专利局、 申请号为 201110211805.7、 发明名称为"小区切换方法、 基站设备和用户设备 "的中国专 利申请的优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明实施例涉及通信技术领域， 并且更具体地， 涉及小区切换方法、基 站设备和用户设备。 背景技术
异构网络可以改善移动网络的覆盖和容量。以 LTE ( Long Term Evolution, 长期演进 )异构网络为例，在 Macro eNB (宏基站 )覆盖范围内放置小型基站， 如 Pico (微基站）、 HeNB ( Home eNB, 家庭基站）、 Femto (微微基站）、 Relay (中继基站）等无线接入点。 UE ( User Equipment, 用户设备）处于宏基站和 小型基站的双重覆盖下。 所有基站可以采用同频部署， 也可以采用异频部署。 异构网络系统能够获得的最大容量是宏基站与小型基站的容量之和，整个通信 系统较以往传统的 LTE宏基站网络具有更高的容量。 在办公楼宇、 商场、 校 园网等场景下，利用这些小型基站和宏基站的异构部署，可有效增强网络覆盖， 提升频谱效率。 小型基站可以采用有线或无线方式接入网络。 在异构网络下， 网络部署复杂， 存在这样一种现象， UE以高速通过异构网络， 在宏基站覆盖的范围内穿越一个或多个小型基站的覆盖范围。为了保证整个系 统的吞吐量， UE应切换到小型基站， 降低宏基站的负载。 这需要源基站和目 标基站以及核心网交互与切换相关的信息，与核心网连接的上行和下行数据管 道从源基站切换到目标基站。
UE的数据分为上行数据和下行数据， 上行数据从 UE发给基站， 再由基 站转给核心网。 下行数据从核心网发给基站， 再由基站转给 UE。 UE获取下 行数据和相关控制信息时，需要监听无线信道的下行信道的控制域部分和数据 域部分。 UE也利用上行信道的数据域发送自己的数据信息， 上行信道的控制 域发送上行相关的控制信息。
在进行宏基站到小型基站的切换时， 当前 UE 的服务小区是宏基站， 该
UE对服务小区和周围的邻居小区， 以及各个载频， 执行事件性、 或者周期性 触发的测量。 当测量满足一定的条件时， UE将测量的结果上报给宏基站。 如 果宏基站决定将 UE切换到小型基站， 则会向小型基站发起切换请求。 如果小 型基站同意该切换请求， 则会回复切换请求响应消息， 并在该消息中携带目标 基站给 UE的相关信息， 用于 UE无线接入到目标基站。 源基站利用切换命令 消息将该信息转发给 UE, UE开始在无线接口向小型基站发起随机接入过程， 接入到目标基站。 从数据面考虑， 对于下行数据， 在宏基站获得切换请求响应 消息时， 宏基站可将从 CN ( Core Network, 核心网 )获得的下行数据转给小 型基站， 由小型基站在 UE成功接入后， 下发下行数据。 小型基站同时向核心 网提供核心网和基站侧的下行数据通道的转换消息 Pathswitch (路径切换）， 核心网收到该信息后将下行数据通道转到小型基站侧。 然后，核心网将下行的 数据包发送给目标基站， 并给源基站即宏基站的数据包加上 end mark (结束标 记）。 对上行数据， 在宏基站获得切换请求响应消息时， 宏基站将从 UE获得 的上行数据发给核心网的同时，将最后一个发出的上行数据包的序号转给小型 基站。 UE成功接入到小型基站后， 小型基站基于该数据包序号和在切换请求 消息里的 CN服务器管道地址信息， 向 CN网发起上行数据传输。 UE离开小 型基站切换到宏基站的过程与此类似。 但是， 如果 UE高速运动， 并且小型基站覆盖范围小， 则 UE切换到小型 基站之后很短的时间内就离开。这种短期的切换增加了一次基站和核心网的交 互负担， 带来的吞吐量收益却不明显。特别是在连续穿越若干个小型基站的场 景下， 这种连续切换带来了系统负担。 发明内容
本发明实施例提供一种小区切换方法、基站设备和用户设备， 能够减少了 切换时的交互负担。
一方面， 提供了一种小区切换方法， 包括： 根据用户设备发送的测量报告 和 /或用户设备的移动速度， 确定用户设备的小区切换类型为部分切换类型， 其中在部分切换类型中，用户设备的 PDCCH需要切换至目标基站； 向目标基 站发送部分切换请求，该部分切换请求用于请求目标基站配置用户设备监听的 PDCCH。
另一方面， 提供了一种上报测量报告的方法， 包括： 宏基站向用户设备广 播小型基站的标识信息和 /或载频信息， 或向用户设备下发测量配置， 该测量 配置包含小型基站的标识信息和 /或载频信息； 宏基站接收用户设备发送的测 量报告， 其中， 在向用户设备广播小型基站的标识信息和 /或载频信息时， 该 测量报告携带对应的小型基站的标识信息和 /或载频信息， 在向用户设备下发 测量配置时， 该测量 ^艮告携带对应于测量配置的测量结果。
另一方面， 提供了一种小区切换方法， 包括： 接收源基站发送的部分切换 请求，部分切换请求用于请求目标基站配置用户设备监听的物理下行控制信道 PDCCH；向源基站发送针对部分切换请求的响应消息或者切换准备失败消息， 响应消息表示目标基站同意部分切换请求，切换准备失败消息表示目标基站拒 绝部分切换请求。
另一方面， 提供了一种小区切换方法， 包括： 接收源基站发送的部分切换 命令， 部分切换命令对应部分切换类型， 且在部分切换类型中， 用户设备的物 理下行控制信道 PDCCH需要切换至目标基站；基于部分切换命令，监听切换 后的 PDCCH , 切换后的 PDCCH是目标基站为用户设备配置的。
另一方面， 提供了一种上报测量报告的方法， 包括： 接收基站广播的小型 基站的标识信息和 /或载频信息， 或者接收基站下发的测量配置， 其中测量配 置包含小型基站的标识信息和 /或载频信息， 向基站发送测量报告， 其中在接 收到基站广播的小型基站的标识信息和 /或载频信息时， 测量报告携带对应的 小型基站的标识信息和 /或载频信息， 或者在接收到基站下发的测量配置时， 测量^艮告携带对应于测量配置的测量结果。
另一方面， 提供了一种基站设备， 包括： 确定单元， 用于根据用户设备发 送的测量报告和 /或用户设备的移动速度， 确定用户设备的小区切换类型为部 分切换类型，其中在部分切换类型中，用户设备的 PDCCH需要切换至目标基 站； 请求单元， 用于向目标基站发送部分切换请求， 部分切换请求用于请求目 标基站配置用户设备监听的物理下行控制信道 PDCCH。
另一方面， 提供了一种基站设备， 包括： 接收单元， 用于接收源基站发送 的部分切换请求，部分切换请求用于请求基站设备配置用户设备监听的物理下 行控制信道 PDCCH; 响应单元， 用于向源基站发送针对部分切换请求的响应 消息或者切换准备失败消息， 响应消息表示目标基站同意部分切换请求，切换 准备失败消息表示目标基站拒绝部分切换请求。
另一方面， 提供了一种基站设备， 包括： 发送单元， 用于向用户设备广播 小型基站的标识信息和 /或载频信息， 或向用户设备下发测量配置， 测量配置 包含小型基站的标识信息和 /或载频信息； 接收单元， 用于接收用户设备发送 的测量报告， 其中， 在向用户设备广播小型基站的标识信息和 /或载频信息时， 测量报告携带对应的小型基站的标识信息和 /或载频信息， 在向用户设备下发 测量配置时， 测量 ^艮告携带对应于测量配置的测量结果。
另一方面， 提供了一种用户设备， 包括： 接收单元， 用于接收基站广播的 小型基站的标识信息和 /或载频信息， 或者接收基站下发的测量配置， 其中测 量配置包含小型基站的标识信息和 /或载频信息， 发送单元， 用于向基站发送 测量报告， 其中在接收到基站广播的小型基站的标识信息和 /或载频信息时， 测量报告携带对应的小型基站的标识信息和 /或载频信息， 或者在接收到基站 下发的测量配置时， 测量 ^艮告携带对应于测量配置的测量结果。
另一方面， 提供了一种用户设备， 包括： 接收单元， 用于接收源基站发送 的部分切换命令， 部分切换命令对应部分切换类型， 且在部分切换类型中， 用 户设备的物理下行控制信道 PDCCH需要切换至目标基站；监听单元，用于基 于部分切换命令， 监听切换后的 PDCCH , 切换后的 PDCCH是目标基站为用 户设备配置的。
本发明实施例可以对用户设备的业务进行部分切换，由目标基站配置用户 设备监听的 PDCCH , 而不是将用户设备全部业务切换到目标基站， 从而减少 了切换时的交互负担。 附图说明
为了更清楚地说明本发明实施例的技术方案，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是根据本发明一个实施例的小区切换方法的流程图。
图 2是根据本发明另一实施例的小区切换方法的流程图。
图 3是根据本发明一个实施例的切换过程的示意流程图。
图 4是根据本发明另一实施例的切换过程的示意流程图。
图 5是根据本发明一个实施例的上报测量报告的方法的流程图。
图 6是根据本发明一个实施例的上报测量报告的方法的流程图。
图 7是根据本发明一个实施例的小区切换方法的流程图。
图 8是根据本发明一个实施例的基站设备的框图。 图 9是根据本发明另一实施例的基站设备的框图。
图 10是根据本发明另一实施例的基站设备的框图。
图 11是根据本发明另一实施例的基站设备的框图。
图 12是根据本发明另一实施例的基站设备的框图。
图 13是根据本发明一个实施例的用户设备的框图。
图 14是根据本发明另一实施例的用户设备的框图。
图 15是根据本发明另一实施例的用户设备的框图。 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。
本发明的技术方案， 可以应用于各种通信系统， 例如： 全球移动通讯系统 ( GSM , Global System of Mobile communication ),码分多址（CDMA, Code Division Multiple Access ) 系统， 宽带码分多址（WCDMA, Wideband Code Division Multiple Access Wireless ), 通用分组无线业务 ( GPRS, General Packet Radio Service ), 长期演进 ( LTE, Long Term Evolution )等。
用户设备 （ UE , User Equipment ) , 也可称之为移动终端 （ Mobile Terminal ),移动用户设备等， 可以经无线接入网（例如， RAN , Radio Access Network )与一个或多个核心网进行通信， 用户设备可以是移动终端， 如移动 电话（或称为"蜂窝"电话）和具有移动终端功能的计算机， 例如， 可以是便携 式、 袖珍式、 手持式、 计算机内置的或者车载的移动装置， 它们与无线接入网 交换语言和 /或数据。
基站，可以是 GSM或 CDMA中的基站（ BTS, Base Transceiver Station ), 也可以是 WCDMA中的基站（ NodeB ),还可以是 LTE中的演进型基站（ eNB 或 eNodeB, evolutional Node B ), 本发明并不限定， 但为描述方便， 下述实 施例以 eNB为例进行说明。
图 1是根据本发明一个实施例的小区切换方法的流程图。图 1的方法由源 基站执行， 例如由当前服务用户设备的基站执行。
101 , 根据用户设备发送的测量报告和 /或用户设备的移动速度， 确定用户 设备的小区切换类型为部分切换类型， 其中在部分切换类型中， 用户设备的
PDCCH需要切换至目标基站。
假设当前服务 UE的基站为宏基站，在其覆盖范围内或者覆盖范围附近有 一个或多个小型基站。 在 UE经过小型基站的边缘或者中心时， 宏基站可根据 UE的测量报告和 /或 UE的移动速度， 判断是否需要进行切换。
可选地，在一个实施例中，在根据用户设备发送的测量报告确定小区切换 类型时， 测量报告中可包含小型基站的标识信息和 /或载频信息。 小型基站的 标识信息和 /或载频信息可以是宏基站事先在广播中携带给 UE 的。 或者， 宏 基站可向 UE下发测量配置， 以触发 UE发送对应于该测量配置的测量报告。 测量配置可包含小型基站的标识信息和 /或载频信息以及测量所需的其他参 数， 如参考信号的测量报告阈值等。 此时， 测量报告中可携带对应于该测量配 置的测量结果。 这样， 宏基站能够根据测量报告识别出小型基站的信息， 从而 确定 UE是否进行切换以及切换的类型。
例如， 宏基站根据测量报告， 发现 UE和小型基站之间的信道质量更好， 则可以确定 UE部分或全部切换到小型基站。
本发明实施例中的部分切换类型是指由目标基站配置用户设备监听的 PDCCH ( Physical Downlink Control Channel, 物理下行控制信道）。 至于用 户设备监听的 PDSCH ( Physical Downlink Shared Channel, 物理下行共享 信道）信道， 可以仍然由源基站配置， 或者部分或全部地由目标基站配置。 在 PDSCH全部由目标基站配置的情况下， UE的上下行数据可以仍然以源基站 为锚节点。 在部分切换类型中， 仅 UE的 PDCCH被切换至目标基站， UE的 上下行数据可以仍然以源基站为锚节点。
本发明实施例中的全部切换类型类似于现有技术中的切换 (handover)处 理， 在完成切换后， UE的所有信道都由目标基站配置， 并且 UE的上下行数 据均通过目标基站和核心网之间的通道传输， 源基站译放 UE的信道资源。
在另一实施例中， 在确定切换类型时， 可以进一步考虑 UE的移动速度。 例如，假设 UE和小型基站之间的信道质量已经满足全部切换类型所规定的条 件， 但是 UE的移动速度较快， 此时若将 UE全部切换到小型基站， UE可能 会很快离开小型基站， 则 UE 必须再一次切换回宏基站或切换到其他小型基 站。这种短期的切换增加了一次基站和核心网的交互负担， 带来的吞吐量收益 却不明显。 因此， 可考虑仅仅对 UE执行部分切换， 将 UE监听的 PDCCH交 由小型基站配置， 节省网络侧的交互负担。
例如， 在 LTE中， 对 UE的移动速度， 可按照规定时间发生小区更换的 次数来判断 UE的移动状态， 并且 LTE中将 UE的移动状态分为三个等级， 即 High-mobility (高速移动 ) 状态， Medium-mobility (中等移动 ) 状态和 Normal-mobility (正常移动）状态。 根据 UE的移动状态， 会对 UE切换或者 小区重选的参数进行基于速度的缩放。
102, 向目标基站发送部分切换请求， 该部分切换请求用于请求目标基站 配置用户设备监听的 PDCCH。
除了请求目标基站配置 UE监听的 PDCCH的指示信息之外，部分切换请 求中还可以包括其他相关信息， 例如， 部分切换请求可包括 UE的 PDSCH的 资源信息， 如所分配的 PDSCH资源块信息、 对应的编码或解码信息、 对应的 参考信号信息等，以便目标基站根据资源信息配置 UE的 PDCCH调度信息或 其他控制信息。 本实施例中所述部分切换请求对应于所述部分切换类型。
本发明实施例可以对用户设备的业务进行部分切换， 即仅将 UE 的 PDCCH切换至目标基站， 由目标基站配置用户设备监听的 PDCCH , 而不是 将用户设备的业务全部切换到目标基站， 从而减少了切换时的交互负担。
图 2是根据本发明另一实施例的小区切换方法的流程图。图 2的方法由目 标基站执行， 例如由用户设备可能部分切换到的目标基站执行。
201 , 接收源基站发送的部分切换请求， 该部分切换请求用于请求目标基 站配置用户设备监听的 PDCCH。
例如， 该部分切换请求可以是源基站在上述 102中发送的部分切换请求， 因此不再重复描述。
202, 向源基站发送针对该部分切换请求的响应消息或者切换准备失败消 息， 该响应消息表示目标基站同意部分切换请求， 该切换准备失败消息表示目 标基站拒绝部分切换请求。
目标基站可根据自身的运行状态， 例如自身的负载情况等，确定是否同意 部分切换请求。 本发明实施例可以对用户设备的业务进行部分切换，由目标基站配置用户 设备监听的 PDCCH , 而不是将用户设备的业务全部切换到目标基站， 从而减 少了切换时的交互负担。
下面结合具体例子， 更加详细地描述本发明的实施例。 图 3是根据本发明 一个实施例的切换过程的示意流程图。
应注意， 图 3-图 5中以 LTE架构为例， 源基站为宏基站 eNB, 目标基站 为小型基站 pico, 移动性管理网元为 MME ( Mobility Management Entity, 移 动性管理实体）， 服务网关为 S-GW ( Serving Gateway )。 但本发明实施例不 限于这些具体网元的名称。例如，小型基站可包括 RRH(Remote Radio Head , 远程射频头)等。 在 2G/3G 系统中， 移动性管理网元可以是 SGSN (Serving GPRS Support Node, 服务 GPRS支持节点)或 S4-SGSN等， 此时宏基站可 以称为 NodeB、 BTS等。 这些变化均落入本发明实施例的范围内。
在图 3的实施例中， 源基站和目标基站为同频部署， 源基站请求目标基站 配置 UE监听的 PDCCH ,但仍然通过源基站的 PDSCH向 UE发送下行数据。
301 , UE向宏基站 eNB发送测量报告。 可选地， 在该测量报告内， UE 可上 基于载频和 /或小区 ID (标识）等标识信息的测量结果， 其中， 小区 ID 可选用小区的 PCI ( Physical Cell Identity, 物理小区标识 )或 ECGI ( Evolved Cell Global Identifier, 演进的小区全局标识）。
302, 宏基站根据 UE的测量报告， 确定 UE和小型基站以及宏基站之间 的信道质量， 并参考 UE的移动速度， 决定是否发起后续的切换流程。 其中判 断是否为小型基站的信息， 可以通过 UE上报的测量报告中的 PCI或 ECGI 或频率， 或者它们的组合来判断。
303, 考虑到同频部署的干扰， 宏基站决定将 UE监听的 PDCCH的配置 功能切换到小型基站， 但是宏基站的 PDSCH仍然为 UE保留。 宏基站发起该 部分切换类型的部分切换请求消息。在该部分切换请求消息中包含 UE监听的 PDCCH 由小型基站配置的指示， 此外宏基站还可以下发 UE 下行数据的 PDSCH的资源信息， 将 PDSCH使用的资源块的时频位置信息、 空间位置信 息、 编解码参数等传给小型基站。
304, 小型基站根据宏基站下发的资源信息配置用户设备的 PDCCH调度 信息或其他控制信息。例如， 小型基站考虑到宏基站在同频的 PDSCH位置会 发送信息， 则可以选择在对应的时频资源位置不发送信号， 或者将该时频资源 用于其他空间位置的其他 UE使用， 以便不干扰该 UE。
305, 如果小型基站同意上述部分切换请求， 小型基站向宏基站发送切换 请求响应消息。 可选地， 该响应消息中可携带目标基站的 PDCCH信息， 以便 宏基站将该 PDCCH信息发送给 UE。 例如， 该 PDCCH信息可包括所使用的 PDCCH子帧个数等。
另外，如果小型基站不同意部分切换， 则可向宏基站发送切换准备失败消 息。 可选地， 该切换准备失败消息中可携带失败原因。
306, 宏基站向 UE发起部分切换命令， 通知 UE切换到目标小区。 该部 分切换命令可类似于现有的切换命令。此外， 该部分切换命令中不仅可包括现 有的用于 RACH的扰码信息， 还包括宏基站的 PDSCH的资源信息， 如所分 配的 PDSCH资源块信息、 对应的编解码信息、 对应的参考信号信息等。 该部 分切换命令中也可以包括小型基站在 305中发送给宏基站的 PDCCH信息。
307, UE根据部分切换命令， 向目标小型基站发起接入请求。
308, 小型基站向 UE发送接入响应， UE完成对小型基站的部分切换。 此后， UE从宏基站的 PDSCH获得下行数据信息， 宏基站从小型基站处 获得 UE的下行数据的 ACK/NACK反馈， 即 UE对下行数据的 HARQ反馈信 息。 UE的上行数据发送给小型基站， 上行数据的 HARQ反馈来自小型基站的 PHICH ( Physical HARQ Indication Channel, 物理 HARQ指示信道）。
后续地， UE可继续测量宏基站的信道质量， 并将测量结果通过 UE和小 型基站之间的上行信道、 小型基站和宏基站之间的接口， 报告给宏基站。 宏基 站可以调整自己的 PDSCH 的资源信息， 如编解码等参数， 并且调整后的 PDSCH的资源信息通过小型基站的 PDCCH传给 UE。
309, 在数据面上， 对于上行数据， 小型基站可以选择在 UE接入到小型 基站后， 直接与核心网建立上行通道发送来自 UE的上行数据， 也可以选择通 过小型基站和宏基站之间的 X2接口以及宏基站和核心网之间已有的通道发送 上行数据。
对于下行数据， UE 监听小型基站的 PDCCH/PHICH , 并监听宏基站的 PDSCH。
需要说明的是，如果没有特别描述， 本发明实施例中数据面上传输的上行 数据或下行数据可以是指 MAC协议处理的数据块， 也可以是 PDCP ( Packet Data Convergence Protocol , 分组数据汇聚协议 )数据包。
310, 小型基站在满足数据面切换条件时， 将 UE的全部信道切换到自身 处。 例如， 在开始调度 UE的 PDCCH ( UE监听小型基站的 PDCCH/PHICH , 宏基站的 PDSCH )持续超过第一时段 D1 , 或者 UE检测到的小型基站的信 道质量持续高于阈值第二时段 D2, 或者检测到 UE的速度下降或停止第三时 段 D3之后， 对于下行数据， 小型基站向 MME发送路径切换（Path switch ) 请求， 以请求将核心网的下行通道转到目标基站； 另外， 对于上行数据， 小型 基站可通过与核心网之间建立的上行通道，将用户设备的上行数据发送给核心 网。 上述时段 D1、 D2和 /或 D3可以由源基站和目标基站协商确定， 或者由目 标基站存储预先确定的 D1、 D2和 /或 D3, 或者源基站将 D1、 D2和 /或 D3携 带在部分切换请求消息中， 发送给目标基站， 或者由 OAM ( Operation Administration and Maintenance; 网管系统） 酉己置 D1、 D2和 /或 D3。
311 -315, 该路径切换过程类似于已有的路径切换过程。 具体地， 小型基 站向 MME发起 Path switch请求（ 311 ), MME向 S-GW发送用户面更新请 求（312 )。 S-GW根据用户面更新请求切换路径（313 ), 将 CN的下行通道 转到小型基站， 然后向 MME发送用户名更新请求确认消息 （314 ), MME向 小型基站发送路径切换请求确认消息 （315 )。 如果之前宏基站没有将 CN 的 TNL ( Transport Network Layer; 传输网络层）地址发送给小型基站， 这时候 宏基站向小型基站发送 CN管道的 TNL地址信息或者小型基站向宏基站或者 MME请求 CN管道的 TNL地址信息， 以使小型基站获得 CN管道的 TNL地 址信息。 并且， 小型基站选择通过自己和 CN的上行通道传输上行数据， 不再 以宏基站作为数据传输的锚点。
这样， 本发明实施例可以对用户设备的业务进行部分切换， 由目标基站配 置用户设备监听的 PDCCH , 而不是将用户设备的业务全部切换到目标基站， 从而减少了切换时的交互负担。
图 3的实施例中， UE的 PDSCH信息是从宏基站获取的。 如果考虑到协 作多点传输 ( CoMP, Coordinated Multiple Point )技术， 小型基站也可以将 自己的 PDSCH用于调度该 UE的信息。图 4是根据本发明另一实施例的切换 过程的示意流程图。 在图 4的实施例中， 对于下行进行 CoMP的数据， 宏基站和小型基站间 可以协商用于 CoMP的 PDSCH的使用方法。 在图 4中， 与图 3相同或相似 的部分使用相同的附图标记， 并省略详细描述。 图 4与图 3的不同之处在于：
303a, 类似于 303, 宏基站向小型基站发出部分切换请求。
303b, 宏基站和小型基站协商 PDSCH基于 CoMP的相关参数。
具体地， 源基站和目标基站协商用于 CoMP的 PDSCH的资源信息， 确 定由源基站或目标基站产生传输块。在确定由源基站产生传输块时，对下行数 据包， 例如 PDCP数据包， 进行 MAC ( Media Access Control, 媒体接入控 制）处理， 产生传输块， 并按照协商的 PDSCH的资源信息将部分传输块通过 目标基站发送给用户设备。
或者，在确定由目标基站产生传输块时， 源基站将针对用户设备的下行数 据包发送给目标基站， 以便目标基站对下行数据包进行 MAC处理， 产生传输 块。 目标基站可将传输块全部传输给源基站， 或者根据 CoMP需要， 将部分 传输块传输给源基站。
这样， 本发明实施例可以对用户设备进行部分切换， 由目标基站配置用户 设备监听的 PDCCH并根据 CoMP需求传输一部分数据包， 而不是将用户设 备全部切换到目标基站， 从而减少了切换时的交互负担。
此外， 如果 UE进入的小型基站和宏基站是异频部署， 则从提升系统容量 的角度出发， UE可以选择占用小型基站的无线资源。换句话说， 在此情况下， 通过目标基站的 PDSCH向用户设备发送下行数据，但源基站作为用户设备的 上行数据和下行数据的锚点。 即， 在下行方向上， 源基站从核心网接收针对用 户设备的下行数据， 并将下行数据发送给目标基站， 以便目标基站将下行数据 转发给用户设备。 在上行方向上， 目标基站从用户设备接收上行数据， 并将上 行数据转发给源基站，源基站通过与核心网之间的通道将上行数据发送至核心 网。
例如，宏基站从 UE的测量报告中发现可以切换到的目标小型基站与该宏 基站是异频部署， 则可以选择在发起部分切换请求时， 请求将 UE的上行和下 行链路全部切换到小型基站，增加小型基站小区的无线系统容量，但是数据流 依然以宏基站为锚点， 与 CN相连接。 只有当小型基站的信号稳定了即满足图 3的实施例中 310所述的条件时， 小型基站可以发起 CN切换更新消息， 将上 行、 下行的面向核心网的通道全部切换到自己这里。
可以在该切换请求消息中， 隐式或者显示地增加指示信息，表明上述的切 换类型。
这样， 本发明实施例可以对用户设备的业务进行部分切换， 由目标基站配 置用户设备监听的 PDCCH和 PDSCH ,但源基站仍作为用户设备的数据锚点， 而不是将用户设备的业务全部切换到目标基站， 从而减少了切换时的交互负 担。
图 5是根据本发明一个实施例的上报测量报告的方法的流程图。图 5的方 法由基站执行， 例如由当前服务用户设备的宏基站执行。
501 , 向用户设备广播小型基站的标识信息和 /或载频信息， 或向用户设备 下发测量配置， 该测量配置包含小型基站的标识信息和 /或载频信息。
小型基站的标识信息可选择小区的 PCI或 ECGI标识。测量配置可包含小 型基站的标识信息和 /或载频信息以及测量所需的其他参数， 如参考信号的测 量报告阈值等。
所广播的小型基站可以处于宏基站覆盖范围内或者与宏基站相邻。 或者， 小型基站的标识信息和 /或载频信息或上述测量配置由网管系统配置给宏基 站， 并由宏基站发送给用户设备。
502 , 接收用户设备发送的测量报告。
其中， 在 501 中向用户设备广播小型基站的标识信息和 /或载频信息时， 502中接收的测量报告携带对应的小型基站的标识信息和 /或载频信息。 另夕卜， 在 501 中向用户设备下发测量配置时， 502中接收的测量报告携带对应于测量 配置的测量结果。
这样，本发明实施例的基站设备能够识别出用户设备所发送的测量报告对 应的基站为小型基站。
图 6是根据本发明一个实施例的上报测量报告的方法的流程图。图 6的方 法由用户设备执行。
601 ,接收基站广播的该基站覆盖范围内和 /或该基站相邻的小型基站的标 识信息和 /或载频信息， 或者接收基站下发的测量配置， 其中该测量配置包含 'J、型基站的标识信息和 /或载频信息，
602, 向基站发送针对小型基站的测量报告。 其中在 601 中接收到基站广播的小型基站的标识信息和 /或载频信息时， 该测量报告携带对应的小型基站的标识信息和 /或载频信息。 或者在 601 中接 收到基站下发的测量配置时， 该测量报告携带对应于测量配置的测量结果。
这样，本发明实施例的基站设备能够识别出用户设备所发送的测量报告对 应的小型基站。
图 5和图 6的方法可结合上述图 1 -图 4的方法使用。 例如， 在 101 中， 基站可基于用户设备按照图 6的方法发送的测量报告，确定该用户设备的切换 类型， 向目标基站发出部分切换请求。 在目标基站同意部分切换时， 源基站向 用户设备发送部分切换命令 (例如， 参照图 3、 图 4中的 306 )。
用户设备在接收到基站发送的部分切换命令之后，根据部分切换命令，监 听源基站的 PDSCH , 监听小型基站的 PDCCH。 可选地， 用户设备还可以根 据部分切换命令， 监听小型基站的 PHICH。
在部分切换至小型基站之后 ,用户设备可以继续测量源基站的信道质量信 息， 并将信道质量信息通过小型基站发送给源基站， 以便源基站根据信道质量 信息调整 PDSCH的资源信息。源基站将调整后的 PDSCH的资源信息通过目 标基站发送给用户设备。
图 7是根据本发明一个实施例的小区切换方法的流程图。图 7的方法由用 户设备执行。
701 ,接收源基站发送的部分切换命令，部分切换命令对应部分切换类型， 且在部分切换类型中， 用户设备的 PDCCH需要切换至目标基站。
702, 基于部分切换命令， 监听切换后的 PDCCH , 切换后的 PDCCH是 目标基站为用户设备配置的。
本发明实施例可以对用户设备的业务进行部分切换，由目标基站配置用户 设备监听的 PDCCH , 而不是将用户设备的业务全部切换到目标基站， 从而减 少了切换时的交互负担。
可选地，作为一个实施例， 用户设备可通过源基站的 PDSCH接收下行数 据。 或者， 用户设备可通过目标基站的 PDSCH接收下行数据， 此时源基站作 为下行数据和用户设备的上行数据的锚点。
可选地， 作为另一实施例， 上述源基站为宏基站， 上述目标基站为小型基 站。 图 8是根据本发明一个实施例的基站设备的框图。 图 8的基站设备 80的 一个例子是当前服务用户设备的基站， 包括确定单元 81和请求单元 82。确定 单元 81和请求单元 82可以是处理器。
确定单元 81根据用户设备发送的测量报告和 /或用户设备的移动速度，确 定用户设备的小区切换类型为部分切换类型， 其中在部分切换类型中， 用户设 备的 PDCCH需要切换至目标基站。 请求单元 82在确定单元 81确定小区切 换类型为部分切换类型时， 向目标基站发送部分切换请求， 该部分切换请求用 于请求目标基站配置用户设备监听的 PDCCH。
本发明实施例可以对用户设备的业务进行部分切换，由目标基站配置用户 设备监听的 PDCCH , 而不是将用户设备的业务全部切换到目标基站， 从而减 少了切换时的交互负担。
图 9是根据本发明另一实施例的基站设备的框图。图 9的基站设备 90中， 与图 8中相同或相似的部分使用相同的附图标记， 并适当省略详细描述。
除了确定单元 81和请求单元 82之外， 基站设备 90还包括传输单元 83, 传输单元 83可以是接口单元。
在一个实施例中， 传输单元 83通过源基站的 PDSCH向用户设备发送下 行数据。 可选地， 在另一实施例中， 传输单元 83从目标基站接收用户设备对 下行数据的 HARQ反馈信息。
请求单元 82的部分切换请求可包括用户设备的 PDSCH的资源信息， 以 便目标基站根据资源信息配置用户设备的 PDCCH调度信息或其他控制信息。
可选地， 在另一实施例中， 在目标基站同意部分切换请求时， 传输单元 83还可从目标基站接收部分切换请求的响应消息， 该响应消息表示目标基站 同意部分切换请求。 该响应消息可携带目标基站的 PDCCH信息。 或者， 在目 标基站拒绝部分切换请求时， 传输单元 83从目标基站接收部分切换请求的切 换准备失败消息，该切换准备失败消息表示目标基站拒绝部分切换请求。例如， 切换准备失败消息可携带失败原因。
在传输单元 83从目标基站接收部分切换请求的响应消息的情况下， 基站 设备 90确定目标基站同意部分切换请求， 因此通过传输单元 83向用户设备 发送部分切换命令。 该部分切换命令可包括源基站的 PDSCH 的资源信息和 / 或目标基站的 PDCCH的资源信息。 对于数据面， 传输单元 83从目标基站接收来自用户设备的上行数据， 并 将上行数据转发给核心网。
可选地， 在另一实施例中， 用户设备可继续测量基站设备 90的信道质量 信息， 传输单元 83从目标基站接收用户设备测量的源基站的信道质量信息， 从而基站设备 90能够根据信道质量信息， 调整 PDSCH的资源信息， 并通过 传输单元 83将调整后的 PDSCH的资源信息，通过目标基站发送给用户设备。
在考虑 CoMP技术的情况下， 基站设备 90还可以包括协商单元 84。 协 商单元 84可以是处理器，与目标基站协商用于 CoMP的 PDSCH的资源信息， 确定由源基站或目标基站产生传输块。其中在确定由源基站产生传输块时，基 站设备 90对下行数据包进行 MAC处理，产生传输块，并按照协商的 PDSCH 的资源信息将部分传输块通过目标基站发送给用户设备。 另外，在确定由目标 基站产生传输块时， 基站设备 90通过传输单元 83将针对用户设备的下行数 据包发送给目标基站， 以便目标基站对下行数据包进行 MAC处理， 产生传输 块， 并且通过传输单元 83接收目标基站产生的部分或全部传输块。
可选地， 在另一实施例中， 例如源基站和目标基站为异频部署时， 在部分 切换过程中， 除了由目标基站配置用户设备的 PDCCH之外，还可通过目标基 站的 PDSCH向用户设备发送下行数据，源基站作为用户设备的上行数据和下 行数据的锚点。
本发明实施例可以对用户设备的业务进行部分切换，由目标基站配置用户 设备监听的 PDCCH , 而不是将用户设备的业务全部切换到目标基站， 从而减 少了切换时的交互负担。
图 10是根据本发明另一实施例的基站设备的框图。图 10的基站设备 100 的例子是目标基站， 包括接收单元 91和响应单元 92。 接收单元 91可以是接 口单元， 响应单元 92可以是处理器。
接收单元 91接收源基站发送的部分切换请求， 该部分切换请求用于请求 基站设备 90配置用户设备监听的 PDCCH。响应单元 92向源基站发送针对部 分切换请求的响应消息或者切换准备失败消息，响应消息表示目标基站同意部 分切换请求， 切换准备失败消息表示基站设备 90拒绝部分切换请求。
本发明实施例可以对用户设备的业务进行部分切换，由目标基站配置用户 设备监听的 PDCCH , 而不是将用户设备的业务全部切换到目标基站， 从而减 少了切换时的交互负担。
图 11是根据本发明另一实施例的基站设备的框图。图 11的基站设备 110 中， 与图 9中相同或相似的部分使用相同的附图标记， 并适当省略详细描述。
除了接收单元 91和响应单元 92之外，基站设备 110还包括协商单元 93、 管理单元 94和发送单元 95。 协商单元 93和管理单元 94可以是处理器， 发 送单元 95可以是接口单元。
在考虑 CoMP 的情况下， 协商单元 93 可与源基站协商用于 CoMP 的 PDSCH的资源信息。在此情况下，发送单元 95通过基站设备 100的 PDSCH 向用户设备发送下行数据，其中源基站仍作为用户设备的上行数据和下行数据 的错点。
可选地， 在一个实施例中， 接收单元 91 还接收用户设备对下行数据的 HARQ反馈信息， 并且发送单元 95将 HARQ反馈信息发送给源基站。
在部分切换请求包括用户设备的 PDSCH的资源信息的情况下，管理单元 94根据资源信息配置用户的 PDCCH调度信息或控制信息。
可选地，在另一实施例中，接收单元 91还用于从用户设备接收上行数据， 然后发送单元 95将上行数据转发给源基站， 以便源基站将上行数据转发给核 心网， 或者， 发送单元 95通过与核心网之间建立的上行通道， 将上行数据发 送给核心网。
在用户设备部分切换至基站设备 110之后，用户设备能继续测量源基站的 信道质量信息。 此时接收单元 91还用于接收用户设备测量的源基站的信道质 量信息， 发送单元 95将信道测量信息转发给源基站， 以便源基站根据信道质 量信息调整 PDSCH 的资源信息。 然后接收单元 91 从源基站接收调整后的 PDSCH的资源信息， 并且发送单元 95将调整后的 PDSCH的资源信息发送 给用户设备。
可选地， 在另一实施例中， 在开始调度用户设备的 PDCCH第一时段 D1 之后， 或者在用户设备检测到的目标基站的信道质量高于阈值第二时段 D2之 后， 或者检测到用户设备的速度下降或停止第三时段 D3之后， 管理单元 94 向移动性管理网元发送路径切换请求，以请求将核心网的下行通道转到目标基 站。 或者， 管理单元 94通过与核心网之间建立的上行通道， 将用户设备的上 行数据发送给核心网。 可选地， 在向移动管理网元发送路径切换请求之前， 接收单元 91接收源 基站发送的核心网通道的地址信息， 或者，请求源基站发送核心网通道的地址 信息。
基站设备 110可以与源基站协商确定上述时段 D1、 02和/或 D3, 或者基 站设备 110可存储预先确定的 D1、 D2和 /或 D3。 可替换地， 源基站可以将上 述时段 D1、 D2和 /或 D3携带在部分切换请求消息中， 发送给基站设备 110。 另外， 也可以由网管系统配置 D1、 D2和 /或 D3。
本发明实施例可以对用户设备的业务进行部分切换，由目标基站配置用户 设备监听的 PDCCH , 而不是将用户设备的业务全部切换到目标基站， 从而减 少了切换时的交互负担。
图 12是根据本发明另一实施例的基站设备的框图。图 12的基站设备 120 的一个例子是宏基站， 包括发送单元 121和接收单元 122。 发送单元 121和 接收单元 122可以是接口单元。
发送单元 121 向用户设备广播小型基站的标识信息和 /或载频信息， 或向 用户设备下发测量配置， 该测量配置包含小型基站的标识信息和 /或载频信息。 接收单元 122接收用户设备发送的测量报告。 其中， 在发送单元 121 向用户 设备广播小型基站的标识信息和 /或载频信息时， 接收单元 122接收的测量报 告携带对应的小型基站的标识信息和 /或载频信息。 在发送单元 121 向用户设 备下发测量配置时， 接收单元 122接收的测量报告携带对应于测量配置的测 量结果。
这样，本发明实施例的基站设备能够识别出用户设备所发送的测量报告对 应的小型基站。
小型基站处于基站 120覆盖范围内或者与基站 120相邻， 或者小型基站 的标识信息和 /或载频信息或测量配置由网管系统配置给基站 120。
图 13是根据本发明一个实施例的用户设备的框图。图 13的用户设备 130 包括接收单元 131和发送单元 132。 接收单元 131和发送单元 132可以是接 口单元。
接收单元 131接收基站广播的小型基站的标识信息和 /或载频信息， 或者 接收基站下发的测量配置， 其中测量配置包含小型基站的标识信息和 /或载频 信息。 发送单元 132向基站发送测量报告。 其中在接收单元 131接收到基站 广播的小型基站的标识信息和 /或载频信息时， 发送单元 132发送的测量报告 携带对应的小型基站的标识信息和 /或载频信息。 或者在接收单元 131接收到 基站下发的测量配置时， 发送单元 132发送的测量报告携带对应于测量配置 的测量结果。
这样，本发明实施例的基站设备能够识别出用户设备所发送的测量报告对 应的小型基站。
图 14是根据本发明另一实施例的用户设备的框图。图 14的用户设备 140 中，与图 13中相同或相似的部分使用相同的附图标记，并适当省略详细描述。
除了接收单元 131和发送单元 132之外， 用户设备 140还可以包括监听 单元 133和测量单元 134。 监听单元 133和测量单元 134可以是处理器。
接收单元 131还用于接收宏基站发送的部分切换命令， 监听单元 133根 据接收单元 131接收的部分切换命令， 监听宏基站的 PDSCH , 监听小型基站 PDCCH。此外，监听单元 133还可以根据接收单元 131接收的部分切换命令， 监听小型基站的 PHICH。
可选地， 在另一实施例中， 测量单元 134测量基站的信道质量信息， 发 送单元 132将信道质量信息通过小型基站发送给宏基站， 以便宏基站根据信 道质量信息调整 PDSCH的资源信息。 然后接收单元 131从目标基站接收来 自宏基站的调整后的 PDSCH的资源信息。
本发明实施例可以对用户设备的业务进行部分切换，由目标基站配置用户 设备监听的 PDCCH , 而不是将用户设备的业务全部切换到目标基站， 从而减 少了切换时的交互负担。
图 15是根据本发明另一实施例的用户设备的框图。图 15的用户设备 150 包括接收单元 151和监听单元 152。 接收单元 151和监听单元 152可以分别 是接口单元和处理器。
接收单元 151 接收源基站发送的部分切换命令， 部分切换命令对应部分 切换类型， 且在部分切换类型中， 用户设备 150的 PDCCH需要切换至目标 基站。 监听单元 152基于部分切换命令， 监听切换后的 PDCCH , 该切换后的 PDCCH是目标基站为用户设备 150配置的。
可选地， 作为一个实施例， 监听单元 152通过源基站的 PDSCH接收下 行数据。 或者监听单元 152通过目标基站的 PDSCH接收下行数据， 此时源 基站作为下行数据和用户设备的上行数据的锚点。
可选地， 作为另一实施例， 上述源基站为宏基站， 目标基站为小型基站。 本发明实施例可以对用户设备的业务进行部分切换，由目标基站配置用户 设备监听的 PDCCH , 而不是将用户设备的业务全部切换到目标基站， 从而减 少了切换时的交互负担。
根据本发明实施例的通信系统可包括上述基站设备和 /或用户设备。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示 例的单元及算法步骤， 能够以电子硬件、 计算机软件或者二者的结合来实现， 为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地 描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决 于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用 来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范 围。
所属领域的技术人员可以清楚地了解到， 为描述的方便和简洁， 上述描述 的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程， 在此不再赘述。
在本申请所提供的几个实施例中， 应该理解到， 所揭露的系统、 装置和方 法， 可以通过其它的方式实现。 例如， 以上所描述的装置实施例仅仅是示意性 的， 例如， 所述单元的划分， 仅仅为一种逻辑功能划分， 实际实现时可以有另 外的划分方式， 例如多个单元或组件可以结合或者可以集成到另一个系统， 或 一些特征可以忽略， 或不执行。 另一点， 所显示或讨论的相互之间的耦合或直 接耦合或通信连接可以是通过一些接口， 装置或单元的间接耦合或通信连接， 可以是电性， 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为 单元显示的部件可以是或者也可以不是物理单元， 即可以位于一个地方， 或者 也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部 单元来实现本实施例方案的目的。
另外， 在本发明各个实施例中的各功能单元可以集成在一个处理单元中， 也可以是各个单元单独物理存在 ,也可以两个或两个以上单元集成在一个单元 中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的 形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售 或使用时， 可以存储在一个计算机可读取存储介质中。 基于这样的理解， 本发 明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全 部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储 介质中， 包括若干指令用以使得一台计算机设备（可以是个人计算机，服务器， 或者网络设备等 )执行本发明各个实施例所述方法的全部或部分步骤。 而前述 的存储介质包括： U盘、移动硬盘、只读存储器（ROM , Read-Only Memory )、 随机存取存储器（RAM, Random Access Memory )、 磁碟或者光盘等各种可 以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于 此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易想到 变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保护范围应 所述以权利要求的保护范围为准。

Claims

权 利 要 求
1、 一种小区切换方法， 其特征在于， 包括：
根据用户设备发送的测量报告和 /或所述用户设备的移动速度， 确定所述 用户设备的小区切换类型为部分切换类型， 其中在所述部分切换类型中， 所述 用户设备的物理下行控制信道 PDCCH需要切换至目标基站；
向所述目标基站发送部分切换请求，所述部分切换请求用于请求所述目标 基站配置所述用户设备监听的所述 PDCCH。
2、 如权利要求 1所述的方法， 其特征在于， 在所述目标基站配置所述用 户设备监听的所述 PDCCH之后， 还包括：
通过源基站的物理下行共享信道 PDSCH向所述用户设备发送下行数据。
3、 如权利要求 2所述的方法， 其特征在于， 还包括：
从所述目标基站接收所述用户设备对所述下行数据的混合自动重传请求 HARQ反馈信息。
4、 如权利要求 1至 3中任一项所述的方法， 其特征在于， 所述部分切换 请求包括所述用户设备的物理下行共享信道 PDSCH的资源信息， 以便所述目 标基站根据所述资源信息配置所述用户设备的 PDCCH调度信息或控制信息。
5、 如权利要求 1至 4中任一项所述的方法， 其特征在于， 还包括： 从所述目标基站接收所述部分切换请求的响应消息，所述响应消息表示所 述目标基站同意所述部分切换请求； 或者，
从所述目标基站接收所述部分切换请求的切换准备失败消息，所述切换准 备失败消息表示所述目标基站拒绝所述部分切换请求。
6、 如权利要求 5所述的方法， 其特征在于，
所述响应消息携带所述目标基站的 PDCCH信息； 或者，
所述切换准备失败消息携带失败原因。
7、 如权利要求 5所述的方法， 其特征在于， 在从所述目标基站接收所述 部分切换请求的响应消息的情况下， 还包括： 向所述用户设备发送部分切换命令， 所述部分切换命令包括源基站的 PDSCH的资源信息和 /或所述用户设备的 PDCCH信息。
8、 如权利要求 1至 7中任一项所述的方法， 其特征在于， 还包括： 从所述目标基站接收来自所述用户设备的上行数据，并将所述上行数据转 发给核心网。
9、 如权利要求 1至 8中任一项所述的方法， 其特征在于， 还包括： 从所述目标基站接收所述用户设备测量的源基站的信道质量信息； 根据所述信道质量信息， 调整源基站的 PDSCH的资源信息；
将调整后的源基站的 PDSCH的资源信息， 通过所述目标基站发送给所述 用户设备。
10、 如权利要求 1至 9中任一项所述的方法， 其特征在于， 还包括： 与所述目标基站协商用于协作多点传输的 PDSCH的资源信息， 确定由源 基站或目标基站产生传输块。
11、 如权利要求 10所述的方法， 其特征在于， 在确定由源基站产生传输 块时， 还包括：
对下行数据包进行媒体接入控制 MAC处理， 产生传输块， 并按照协商的 PDSCH的资源信息将部分传输块通过所述目标基站发送给所述用户设备。
12、 如权利要求 10所述的方法， 其特征在于， 在确定由目标基站产生传 输块时， 还包括：
将针对所述用户设备的下行数据包发送给所述目标基站，以便所述目标基 站对所述下行数据包进行 MAC处理， 产生传输块；
接收所述目标基站产生的部分或全部传输块。
13、 如权利要求 1至 12中任一项所述的方法， 其特征在于， 还包括： 通过目标基站的 PDSCH向所述用户设备发送下行数据， 源基站作为所述 用户设备的上行数据和所述下行数据的锚点。
14、 如权利要求 1至 13任一项所述的方法， 其特征在于， 所述目标基站 为小型基站。
15、 一种上报测量报告的方法， 其特征在于， 包括：
宏基站向用户设备广播小型基站的标识信息和 /或载频信息， 或向所述用 户设备下发测量配置， 所述测量配置包含所述小型基站的标识信息和 /或载频 信息；
所述宏基站接收所述用户设备发送的测量报告，
其中， 在向所述用户设备广播小型基站的标识信息和 /或载频信息时， 所 述测量^艮告携带该小型基站的标识信息和 /或载频信息，
在向所述用户设备下发测量配置时，所述测量^艮告携带对应于所述测量配 置的测量结果。
16、 如权利要求 15所述的方法， 其特征在于， 所述小型基站处于所述宏 基站覆盖范围内或者与所述宏基站相邻；
或者所述小型基站的标识信息和 /或载频信息或所述测量配置由网管系统 配置给宏基站。
17、 一种小区切换方法， 其特征在于， 包括：
接收源基站发送的部分切换请求，所述部分切换请求用于请求目标基站配 置所述用户设备监听的物理下行控制信道 PDCCH;
向所述源基站发送针对所述部分切换请求的响应消息或者切换准备失败 消息， 所述响应消息表示所述目标基站同意所述部分切换请求， 所述切换准备 失败消息表示所述目标基站拒绝所述部分切换请求。
18、 如权利要求 17所述的方法， 其特征在于， 还包括：
通过源基站的物理下行共享信道 PDSCH向所述用户设备发送下行数据。
19、 如权利要求 17所述的方法， 其特征在于， 还包括：
接收所述用户设备对所述下行数据的 HARQ反馈信息；
将所述 HARQ反馈信息发送给所述源基站。
20、 如权利要求 17至 19中任一项所述的方法， 其特征在于， 所述部分切 换请求包括所述用户设备的 PDSCH的资源信息， 所述方法还包括： 根据所述资源信息配置所述用户的 PDCCH调度信息或控制信息。
21、 如权利要求 17至 20中任一项所述的方法， 其特征在于， 向所述源基 站发送针对所述部分切换请求的响应消息包括：
所述响应消息携带所述目标基站的 PDCCH信息； 或者，
所述切换准备失败消息携带失败原因。
22、 如权利要求 17至 21中任一项所述的方法， 其特征在于， 在向所述源 基站发送所述响应消息的情况下， 还包括：
从所述用户设备接收上行数据；
将所述上行数据转发给源基站， 以便所述源基站将上行数据转发给核心 网，或者，通过与核心网之间建立的上行通道，将所述上行数据发送给核心网。
23、 如权利要求 17至 22中任一项所述的方法， 其特征在于， 还包括： 接收所述用户设备测量的源基站的信道质量信息；
将所述信道质量信息转发给所述源基站，以便所述源基站根据所述信道质 量信息调整源基站的 PDSCH的资源信息；
从所述源基站接收调整后的源基站的 PDSCH的资源信息， 并将调整后的 源基站的 PDSCH的资源信息发送给所述用户设备。
24、 如权利要求 17至 23中任一项所述的方法， 其特征在于， 还包括： 与所述源基站协商用于协作多点传输的 PDSCH的资源信息。
25、 如权利要求 17至 24中任一项所述的方法， 其特征在于， 还包括： 通过目标基站的 PDSCH向所述用户设备发送下行数据， 其中所述源基站 作为所述用户设备的上行数据和所述下行数据的锚点。
26、 如权利要求 17 - 25中任一项任一项所述的方法， 其特征在于， 还包 括：
在开始调度用户设备的 PDCCH第一时段之后，或者在所述用户设备检测 到的目标基站的信道质量高于阈值第二时段之后，或者检测到用户设备的速度 下降或停止第三时段之后，
向移动性管理网元发送路径切换请求，以请求将核心网的下行通道转到目 标基站； 或者
通过与核心网之间建立的上行通道， 将用户设备的上行数据发送给核心 网。
27、 如权利要求 26所述的方法， 其特征在于， 在向移动管理网元发送路 径切换请求之前， 还包括：
接收所述源基站发送的核心网通道的地址信息； 或者，
请求所述源基站发送所述核心网通道的地址信息。
28、 一种小区切换方法， 其特征在于， 包括：
接收源基站发送的部分切换命令， 所述部分切换命令对应部分切换类型， 且在所述部分切换类型中，所述用户设备的物理下行控制信道 PDCCH需要切 换至目标基站；
基于所述部分切换命令， 监听切换后的 PDCCH, 所述切换后的 PDCCH 是目标基站为所述用户设备配置的。
29、 如权利要求 28所述的方法， 其特征在于， 还包括：
通过所述源基站的物理下行共享信道 PDSCH接收下行数据； 或者 通过目标基站的 PDSCH接收下行数据， 所述源基站作为所述下行数据和 用户设备的上行数据的锚点。
30、如权利要求 28或 29所述的方法，其特征在于，所述源基站为宏基站， 所述目标基站为小型基站。
31、 一种上报测量报告的方法， 其特征在于， 包括：
接收基站广播的小型基站的标识信息和 /或载频信息， 或者接收基站下发 的测量配置， 其中所述测量配置包含所述小型基站的标识信息和 /或载频信息， 向所述基站发送测量报告，
其中在接收到所述基站广播的小型基站的标识信息和 /或载频信息时， 所 述测量报告携带该小型基站的标识信息和 /或载频信息， 或者在接收到所述基 站下发的测量配置时， 所述测量"¾告携带对应于所述测量配置的测量结果。
32、 如权利要求 31所述的方法， 其特征在于， 所述小型基站处于所述基 站覆盖范围内或者与所述基站相邻， 或者所述小型基站的标识信息和 /或载频 信息或所述测量配置由网管系统配置给所述基站。
33、 如权利要求 31或 32所述的方法， 其特征在于， 还包括：
接收所述基站发送的部分切换命令；
根据所述部分切换命令， 监听所述基站的物理下行共享信道 PDSCH, 监 听小型基站的物理下行控制信道 PDCCH。
34、 如权利要求 33所述的方法， 其特征在于， 还包括：
根据所述部分切换命令， 监听所述小型基站的物理 HARQ 指示信道 PHICH。
35、 如权利要求 33或 34所述的方法， 其特征在于， 还包括：
测量所述基站的信道质量信息；
将信道质量信息通过小型基站发送给所述基站，以便所述基站根据所述信 道质量信息调整所述基站的 PDSCH的资源信息；
从所述目标基站接收来自所述基站的调整后的所述基站的 PDSCH的资源 信息。
36、 一种基站设备， 其特征在于， 包括：
确定单元， 用于根据用户设备发送的测量报告和 /或所述用户设备的移动 速度，确定所述用户设备的小区切换类型为部分切换类型， 其中在所述部分切 换类型中， 所述用户设备的物理下行控制信道 PDCCH需要切换至目标基站； 请求单元， 用于向所述目标基站发送部分切换请求， 所述部分切换请求用 于请求所述目标基站配置所述用户设备监听的所述 PDCCH。
37、 如权利要求 36所述的基站设备， 其特征在于， 还包括：
协商单元， 用于与所述目标基站协商用于协作多点传输的 PDSCH的资源 信息。
38、 一种基站设备， 其特征在于， 包括：
接收单元， 用于接收源基站发送的部分切换请求， 所述部分切换请求用于 请求所述基站设备配置所述用户设备监听的物理下行控制信道 PDCCH;
响应单元，用于向所述源基站发送针对所述部分切换请求的响应消息或者 切换准备失败消息， 所述响应消息表示所述基站设备同意所述部分切换请求， 所述切换准备失败消息表示所述基站设备拒绝所述部分切换请求。
39、 如权利要求 38所述的基站设备， 其特征在于， 还包括：
协商单元， 用于与所述源基站协商用于协作多点传输的 PDSCH的资源信 息。
40、 一种基站设备， 其特征在于， 包括：
发送单元， 用于向用户设备广播小型基站的标识信息和 /或载频信息， 或 向所述用户设备下发测量配置，所述测量配置包含所述小型基站的标识信息和 /或载频信息；
接收单元， 用于接收所述用户设备发送的测量报告，
其中， 在向所述用户设备广播小型基站的标识信息和 /或载频信息时， 所 述测量报告携带对应的小型基站的标识信息和 /或载频信息，
在向所述用户设备下发测量配置时，所述测量^艮告携带对应于所述测量配 置的测量结果。
41、 一种用户设备， 其特征在于， 包括：
接收单元， 用于接收基站广播的小型基站的标识信息和 /或载频信息， 或 者接收基站下发的测量配置，其中所述测量配置包含所述小型基站的标识信息 和 /或载频信息，
发送单元， 用于向所述基站发送测量报告， 其中在接收到所述基站广播的 小型基站的标识信息和 /或载频信息时， 所述测量报告携带对应的小型基站的 标识信息和 /或载频信息， 或者在接收到所述基站下发的测量配置时， 所述测 量报告携带对应于所述测量配置的测量结果。
42、 一种用户设备， 其特征在于， 包括：
接收单元， 用于接收源基站发送的部分切换命令， 所述部分切换命令对应 部分切换类型，且在所述部分切换类型中， 所述用户设备的物理下行控制信道 PDCCH需要切换至目标基站；
监听单元， 用于基于所述部分切换命令， 监听切换后的 PDCCH, 所述切 换后的 PDCCH是目标基站为所述用户设备配置的。
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