WO2010085913A1 - 一种多载波小区切换方法、装置和系统 - Google Patents

一种多载波小区切换方法、装置和系统 Download PDF

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Publication number
WO2010085913A1
WO2010085913A1 PCT/CN2009/070337 CN2009070337W WO2010085913A1 WO 2010085913 A1 WO2010085913 A1 WO 2010085913A1 CN 2009070337 W CN2009070337 W CN 2009070337W WO 2010085913 A1 WO2010085913 A1 WO 2010085913A1
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WIPO (PCT)
Prior art keywords
target enb
carriers
transmitted
information
data
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PCT/CN2009/070337
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English (en)
French (fr)
Inventor
肖登坤
贺媛
李安俭
韩静
李庆
王文杰
Original Assignee
华为技术有限公司
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.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2009/070337 priority Critical patent/WO2010085913A1/zh
Priority to CN200980155438.4A priority patent/CN102217368B/zh
Priority to EP09839061.0A priority patent/EP2387269B1/en
Publication of WO2010085913A1 publication Critical patent/WO2010085913A1/zh
Priority to US13/195,231 priority patent/US8908640B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/04Error control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/16Interfaces between hierarchically similar devices
    • H04W92/20Interfaces between hierarchically similar devices between access points

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a multi-carrier cell handover method, apparatus, and system.
  • LTE-A Long-term evolution advance
  • CA Carrier Aggregation
  • one UE User Equipment
  • the aggregation can be divided into three types, continuous carrier aggregation, discontinuous carrier aggregation in the same band, and discontinuous carrier aggregation in different bands.
  • the UE when the UE moves to the edge of the neighboring cell, the UE generally determines whether the value of the neighboring cell RSRP is better than the value of the serving cell RSRP by measuring the RSRP (Reference Signal Received Power) of the neighboring cell. Offset; if yes, the A3 event is triggered and the measurement report triggered by the event is reported, and the serving cell can initiate the handover after receiving the measurement report.
  • RSRP Reference Signal Received Power
  • the source eNB preferentially selects multiple eNBs in the same cell as the target eNB.
  • the UE uses multiple carriers, which means that the data rate of the current service of the UE is large. If the source eNB selects only a single eNB as the target eNB, and only one carrier channel quality is good, and the channel quality of other carriers is not good, only the single carrier can be used to support the current service. The UE will not be able to support the current business of the UE, and the user's final experience will be reduced.
  • the source eNB will use the cell 1 as the final target cell of the UE regardless of the cell 2, and cause the UE to switch to the target eNB1 to which the cell 1 belongs. However, at this time, the UE will only be able to use one carrier, thereby reducing the data transmission rate.
  • Embodiments of the present invention provide a multi-carrier cell handover method, apparatus, and system, which can be solved
  • An embodiment of the present invention provides a multi-carrier cell handover method, including:
  • the sequence number of the data to be transmitted sent by the source eNB and the identification information of the target eNB where the other carriers to which the UE is to perform handover are located;
  • An embodiment of the present invention provides a switching apparatus, including:
  • a receiving unit configured to receive a measurement report triggered by an event reported by the UE
  • a determining unit configured to determine, according to the measurement report, to switch the UE to a corresponding carrier of a different target eNB;
  • a sending unit configured to send, to the different target eNB or the primary target eNB in the different target eNB, a sequence number of the data to be transmitted and identifier information of the target eNB where the other carriers to which the UE is to perform handover.
  • a receiving unit configured to: after receiving the handover request response, receive a sequence number of the data to be transmitted sent by the source eNB, and identifier information of the target eNB where the other carriers to which the UE is to perform handover;
  • a transmitting unit configured to transmit scheduling information between the target eNB in which the other carrier to which the UE is to perform handover according to the identifier information.
  • An embodiment of the present invention provides a multi-carrier cell switching system, including: a first switching device, configured to receive an event-triggered measurement report reported by the UE, and determine, according to the measurement report, to switch the UE to a corresponding carrier of a different target eNB; to the different target eNB or The second switching device of the primary target eNB in the different target eNBs sends the sequence number of the data to be transmitted and the identification information of the target eNB where the other carriers to which the UE is to perform handover;
  • a second switching device configured to be configured on the target eNB, after receiving the handover request response, receiving, by the first switching device in the source eNB, a sequence number of the data to be transmitted and a target eNB where the other carrier to which the UE is to perform handover Identifying information; transmitting scheduling information between the target eNB in which the other carrier to which the UE is to perform handover according to the identification information.
  • the multi-carrier cell handover method, device, and system provided by the embodiment of the present invention perform handover decision according to the event report triggered by the event reported by the UE. If it is determined that the UE is to be handed over to the corresponding carrier of the different target eNB, the target eNB is switched to a different target eNB. Or the primary target eNB in the different target eNBs sends the sequence number of the data to be transmitted and the identity information of the target eNB where the other carriers to be handed over by the UE, and the different target eNBs receive the scheduling information after receiving the sequence number.
  • a plurality of eNBs perform data interaction with the UE through multiple carriers, thereby improving data throughput of the UE during cell edge switching, and improving data transmission efficiency.
  • FIG. 1 is a flowchart of a multi-carrier cell handover method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a multi-carrier cell handover method according to another embodiment of the present invention.
  • FIG. 3 is a flowchart of a multi-carrier cell handover method according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for switching a multi-carrier cell according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic diagram of a multiple switching device according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a determining unit of an embodiment of the present invention
  • FIG. 7 is a schematic diagram of a switching device according to another embodiment of the present invention.
  • Figure 8 is a schematic illustration of a transfer unit of an embodiment of the present invention.
  • a method for handover of a multi-carrier cell includes:
  • S201 The sequence number of the data to be transmitted sent by the source eNB and the identifier information of the target eNB where other carriers that the UE is to perform handover are located.
  • S202 Transfer scheduling information between the target eNB in which the other carrier to which the UE is to perform handover according to the identifier information.
  • the multi-carrier cell handover method performs a handover decision according to the event report triggered by the event reported by the UE, and if it is determined that the UE is to be switched to the corresponding carrier of the different target eNB, the different target eNB or the different
  • the primary target eNB in the target eNB sends the sequence number of the data to be transmitted and the identity information of the target eNB where the other carriers to be handed over by the UE, and after receiving the sequence number, the different target eNBs perform scheduling information transmission, and implement different
  • the target eNB performs data interaction with the UE through multiple carriers, thereby improving data throughput of the UE during cell edge handover and improving data transmission efficiency.
  • Embodiment 1 when the UE moves to the edge of the neighboring cell 1 and the neighboring cell 2, the UE switches to the target eNB1 to which the neighboring cell 1 belongs and the carrier in the target eNB2 to which the neighboring cell 2 belongs, as an example, which is an embodiment of the present invention. Detailed instructions are given.
  • the target eNB1 and the target eNB2 are in a parallel relationship.
  • this embodiment may include the following steps:
  • the UE reports a measurement report triggered by the event.
  • Some measured frequency and control information may be sent by the source eNB to the UE.
  • the UE when the UE moves to the edge of the neighboring cell 1 and the neighboring cell 2, the UE returns a measurement report to the source eNB after measuring the cell.
  • the trigger may be included.
  • the source eNB After receiving the measurement report of the UE, the source eNB performs a handover decision.
  • the related information of the candidate cell of the UE is obtained according to the measurement report, and it is determined whether the candidate cell is a different cell of a different eNB. If not, it is determined to switch the UE to a corresponding carrier of a different target eNB.
  • the source eNB determines that the UE is to be handed over to the target eNB1 to which the neighboring cell 1 belongs and the carrier in the target eNB2 to which the neighboring cell 2 belongs.
  • the source eNB transmits a handover request (handover request) to the target eNB1 and the target eNB2, such as handover request 1 and handover request 2 as shown in FIG.
  • the target eNB1 and the target eNB2 return a handover request Acknowledge, such as the handover request response 1 and the handover request response 2 shown in FIG.
  • the source eNB performs downlink allocation (DL allocation) on the UE and sends a handover command to enable the UE to report the measurement report on the allocated downlink resource, and notify the UE to perform handover of the target cell.
  • DL allocation downlink allocation
  • Steps S303 and S305 are both prior art and will not be described in detail herein.
  • the source eNB performs a sequence number status transmission (SN Status Transfer) to the target eNB, including the sequence number status transmission 1 and the sequence number status transmission 2 shown in FIG.
  • SN Status Transfer a sequence number status transmission
  • the serial number status transmission includes the sequence number of the data to be transmitted, and the UE to which the UE is to be switched The identification information of the target eNB where the carrier is located.
  • the sequence number status transmission 1 includes the sequence number of the data to be transmitted and the identification information of the target eNB2
  • the sequence number status transmission 2 includes the sequence number of the data to be transmitted and the identification information of the target eNB 1.
  • the source eNB needs to send a suitable sequence eNB to multiple target eNBs.
  • the sequence number of the data packet of the video service has an odd number and an even number.
  • the source eNB sends the odd sequence number (SN Status Transfer 1 ) of the data to be transmitted to the target eNB 1, and sends the even serial number (SN) of the data to be transmitted to the target eNB 2. Status Transfer 2).
  • the embodiments of the present invention are not limited thereto.
  • the same sequence numbers may be sent to different eNBs.
  • different sequence numbers of data to be transmitted may also be sent to different target eNBs according to the requirements of different services for Qos. For example, according to different requirements of QoS for different services, services with higher QoS requirements (such as real-time video services) are preferentially assigned to carriers with relatively stable channel conditions and more resources available.
  • the UE transmits a synchronization signal (Synchronization) 1 and a synchronization signal 2 to the target eNB1 and the target eNB2.
  • a synchronization signal Synchronization
  • the S308 a to the S308c, the target eNB1, and the target eNB2 After receiving the sequence number state transmission, the S308 a to the S308c, the target eNB1, and the target eNB2 perform scheduling information transmission, and respectively send uplink allocation and time advance to the UE.
  • the uplink allocation and time advance (UL allocation+TA) 1 may be sent by the target eNB1 to the UE.
  • the target eNB1 also sends scheduling information to the target eNB2, so that The target eNB2 can cooperate with the target eNB1 to perform scheduling, thereby transmitting an appropriate uplink allocation and time advance 2 to the UE.
  • the scheduling information includes: scheduling rules, such as continuous scheduling or interval scheduling, and scheduling results.
  • the eNB2 may first send uplink allocation and time advance information to the UE, and send scheduling information to the eNB1, so that the target eNB1 can cooperate with the target eNB2 to perform scheduling, thereby transmitting appropriate uplink allocation and time advance information.
  • the eNB2 may first send uplink allocation and time advance information to the UE, and send scheduling information to the eNB1, so that the target eNB1 can cooperate with the target eNB2 to perform scheduling, thereby transmitting appropriate uplink allocation and time advance information.
  • the transmission of the scheduling information between the eNB1 and the eNB2 can be negotiated by the two, which is not limited by the embodiment of the present invention.
  • the UE informs the target eNB to prepare for data transmission by using a handover confirm, and includes a handover confirmation 1 sent to the target eNB1 and a handover confirmation 2 sent to the target eNB2.
  • the eNB1 and the eNB2 After the UE completes the handover acknowledgment, the eNB1 and the eNB2 perform the transmission of the data to be transmitted with the UE according to the sequence number of the received data to be transmitted, thereby implementing handover of the UE from the source eNB to the target eNB1 and eNB2, and implementing the multi-carrier. Cell handover.
  • the handover between the source cell and the target cell is performed by the X2 interface of the source eNB and the target eNB, or by a mobility management entity (MME) connected to the source eNB and the target eNB, respectively. Communication.
  • MME mobility management entity
  • the UE when the UE moves to the edge of the neighboring cell 1 and the neighboring cell 2, the UE switches to the primary target eNB to which the neighboring cell 1 belongs and the carrier in the target eNB to which the neighboring cell 2 belongs, as an example, and the implementation of the present invention is implemented. The example will be described in detail.
  • the target eNB includes a primary target eNB and a secondary target eNB.
  • this embodiment may include the following steps:
  • the steps S401 to S405 are the same as the steps S301 to S305 in the first embodiment, where the eNB1 is the primary target eNB in this embodiment, and the eNB2 is the secondary target eNB in this embodiment, and specific steps are not described herein.
  • the source eNB performs sequence number status transmission to the primary target eNB (SN Status Transfer) and the identification information of the slave target eNB in which the other carriers to which the UE is to be handed over are transmitted.
  • the serial number of the data to be transmitted is included in the serial number status transmission.
  • all the identification information from the target eNB is transmitted to the primary target eNB.
  • Embodiments of the present invention may also use other manners to transmit identification information of the slave target eNB in which other carriers to which the UE is to handover.
  • the identification information from the target eNB may be included in the sequence number status transmission. That is, for the embodiment of the present invention, it is not limited whether the identification information of the target eNB is included in the sequence number state transmission, and the identification information of other target eNBs may be sent to the source target eNB in multiple manners.
  • the primary target eNB sends a sequence number status transmission to the target eNB according to the received identity information of the target eNB, where the sequence number of the data to be transmitted is included.
  • the primary target eNB may send the sequence number of the data to be transmitted that is received by itself to each of the target eNBs, and may also send the sequence number of the received data to be transmitted to different target eNBs by using a staggered transmission manner; Or if multiple target eNBs carry different services,
  • the UE sends a synchronization signal (Synchronization) 1 and a synchronization signal 2 to the primary target eNB and the secondary target eNB.
  • a synchronization signal Synchronization
  • the primary target eNB and the secondary target eNB After receiving the sequence number status, the primary target eNB and the secondary target eNB perform scheduling information transmission, and send uplink allocation and time advance to the UE respectively.
  • the uplink allocation and time advance (UL allocation+TA) 1 may be sent by the target primary target eNB to the UE.
  • the primary target eNB also sends scheduling information to the secondary target eNB, so that the secondary target eNB can cooperate with the primary target eNB for scheduling, thereby transmitting appropriate uplink allocation and time advance 2 to the UE.
  • the scheduling information includes: scheduling rules, such as continuous scheduling or interval scheduling, and scheduling results.
  • the UE confirms by switching (Handover confirm) informs the target eNB that data transmission is to be performed, including handover confirmation 1 transmitted to the primary target eNB and handover confirmation 2 transmitted to the target eNB.
  • the primary target eNB and the secondary target eNB may continue to transmit the data to be transmitted with the UE according to the sequence number of the received data to be transmitted, thereby implementing the UE from the source eNB to the primary target eNB and the secondary target eNB.
  • the handover realizes the handover of the multi-carrier cell.
  • the core network For the eNB of the master-slave relationship, the core network only needs to be linked with the primary eNB. For the eNB of the parallel relationship, the core network and each eNB have a link.
  • the handover method of the multi-carrier cell in the implementation of the present invention after the source eNB determines that the UE is to be handed over to multiple carriers of different target eNBs after performing the handover decision, and then, according to the needs, to each target eNB or each target eNB.
  • the primary target eNB transmits the same or different sequence number and the identification information of the target eNB where the other carriers to which the UE is to be handed over, and after receiving the sequence number, the target eNB can perform scheduling information transfer between different eNBs, thereby enabling
  • the cooperation with the UE data transmission is performed between different eNBs to implement data transmission of multiple carriers on different eNBs, thereby improving the data throughput of the UE.
  • an embodiment of the present invention further provides a switching apparatus, including:
  • the receiving unit 51 is configured to receive a measurement report triggered by an event reported by the UE;
  • a determining unit 52 configured to determine, according to the measurement report, to switch the UE to a corresponding carrier of a different target eNB;
  • the sending unit 53 is configured to send, to the different target eNB or the primary target eNB in the different target eNB, a sequence number of the data to be transmitted and identifier information of the target eNB where the other carriers to which the UE is to perform handover.
  • the determining unit 92 further includes:
  • the obtaining module 521 is configured to acquire, according to the measurement report, related information about the candidate cell of the UE;
  • the determining module 522 is configured to determine, when the candidate cells are different cells of different target eNBs, The notification sending unit sends the sequence number of the data to be transmitted to the different target eNB.
  • the switching device of this embodiment may be configured on the eNB.
  • the sequence numbers of the data to be transmitted sent to the different target eNBs may be different according to the foregoing embodiments.
  • the operation of the source eNB in the multi-carrier cell handover method in the embodiment shown in FIG. 3 can be implemented to implement handover of the UE to carriers of different target eNBs.
  • an embodiment of the present invention further provides another switching apparatus, including: a receiving unit 71, configured to receive a sequence number of data to be transmitted sent by a source eNB, and a target of another carrier to which the UE is to perform handover. Identification information of the eNB;
  • the transmitting unit 72 is configured to transmit scheduling information according to the identifier information to a target eNB where other carriers to which the UE is to perform handover.
  • the switching device may further include: a first sending unit, configured to: after the receiving unit receives the serial number of the data to be transmitted and the identifier information, according to the identifier information, The target eNB where the other carriers to which the UE is to perform handover transmits the sequence number of the data to be transmitted.
  • the device scheme provided by this embodiment can refer to the operation of the primary target eNB in the multi-carrier cell handover method of the embodiment shown in FIG. 4, and implement handover of the UE to carriers of different target eNBs.
  • the switching device further includes: a second sending unit, configured to send uplink data allocation and time advance information to the UE;
  • the transmitting unit 72 further includes:
  • a first transmitting module configured to send scheduling information to a target eNB where another carrier to which the UE is to perform handover after the second sending unit sends the first uplink data allocation and time advance information to the UE, where the scheduling Information, the target eNB for the other carrier can send the second uplink data allocation and time advance information to the UE according to the scheduling information;
  • a second delivery module configured to receive scheduling information sent by the target eNB where the other carrier that the UE is to perform handover, and after receiving, notify the sending unit to send uplink data allocation and time advance information to the UE according to the scheduling information.
  • the scheme may refer to the object in the multi-carrier cell handover method of the embodiment shown in FIG. 3 or FIG. 4
  • the operation of the target eNB implements handover of the UE to carriers of different target eNBs.
  • the switching device of this embodiment may be set on the eNB.
  • an embodiment of the present invention further provides a multi-carrier cell switching system, including: a first switching device 81, configured to receive, by the source eNB, an event triggered triggering report reported by the UE; Determining, according to the measurement report, that the UE is switched to a corresponding carrier of a different target eNB; and transmitting, to the second switching device 82, in the primary target eNB set in the different target eNB or the different target eNB The serial number and the identification information of the target eNB where the other carriers to which the UE is to perform handover are located;
  • the second switching device 82 is configured to be configured on the target eNB, after receiving the handover request response, receiving the sequence number of the data to be transmitted sent by the first switching device 81 on the source eNB and the target of the other carrier to be switched by the UE.
  • Identification information of the eNB transmitting scheduling information between the target eNB in which the other carrier to which the UE is to perform handover according to the identification information.
  • the embodiment preferably transmits different sequence numbers of data to be transmitted to the eNBs of different target cells at the first switching device 81.
  • the multi-carrier cell switching system in this embodiment can refer to the operation of the source eNB and the target eNB in the multi-carrier cell handover method of the embodiment shown in FIG. 3 and FIG. 4 to implement handover of the UE to carriers of different target eNBs.
  • the switching apparatus and system provided by the embodiment of the present invention perform a handover decision according to a measurement report triggered by an event reported by the UE. If it is determined that the UE is to be switched to a corresponding carrier of a different target eNB, the target e NB or the different target is The primary target eNB in the eNB sends different sequence numbers of the data to be transmitted and the identification information of the target eNB where the other carriers to which the UE is to be handed over. After receiving the sequence number, the different target eNBs transmit the scheduling information, thereby implementing multiple The eNB performs data interaction with the UE through multiple carriers, thereby improving data throughput of the UE during cell edge handover and improving data transmission efficiency.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Description

一种多载波小区切换方法、 装置和系统 技术领域 本发明涉及无线通信领域, 尤其涉及一种多载波小区切换方法、 装置和 系统。
背景技术
在 LTE-A ( long-term evolution advance,增强型长期演进 ) 系统中, 载波 聚合 (Carrier Aggregation, CA ) 技术被釆用后, LTE-A 的一个 UE(User Equipment, 用户设备)可以使用一个以上的载波。 通常聚合的情况可以分为三 种, 连续的载波聚合、 同一波段内不连续的载波聚合、 以及不同波段内的非 连续的载波聚合。
在现有技术中, UE在移动到邻小区边缘时, 通常 UE通过测量邻小区的 RSRP ( Reference Signal Received Power, 参考信号接收功率), 判断邻小区 RSRP的值是否比服务小区 RSRP的值好一个偏移量; 如果是, 则触发 A3事 件并上报该事件触发的测量报告, 服务小区收到该测量报告后可启动切换决 來。
一般情况下,源 eNB会优先选择多个载波在同一小区的 eNB为目标 eNB。 而通常 UE使用多载波, 意味着该 UE当前业务的数据速率较大。 如果源 eNB 只选择单个 eNB为目标 eNB, 此时只有一个载波信道质量较好, 其他载波的 信道质量不好, 则只能使用单载波支持当前业务。将不能艮好支持 UE当前业 务, 用户最终感受将会有所下降。
在载波聚合的网络拓朴结构下,如果 UE在测量结果中上报了其中的一个 小区 1 (对应的一个载波质量最好)和另一个小区 2 (对应的一个载波质量较 好)作为备选小区, 通常源 eNB会不管小区 2, 将小区 1作为 UE的最终目 标小区, 使 UE切换到小区 1所属的目标 eNBl中。 但是此时 UE将只能使用 一个载波, 从而降低数据的传输速率。
发明内容 本发明的实施例提供一种多载波小区切换方法、 装置和系统, 能够解决
UE与多个目标 eNB的不同小区的载波切换问题。 本发明的实施例釆用如下 技术方案:
本发明的实施例一种多载波小区切换方法, 包括:
接收 UE上报的事件触发的测量报告;
根据所述测量报告确定将所述 UE切换到不同目标 eNB的相应载波上; 向所述不同目标 eNB或所述不同目标 eNB中的主目标 eNB发送待传输 数据的序列号以及所述 UE要进行切换的其它载波所在的目标 eNB的标识信 息。
本发明的实施例另一种多载波小区切换方法, 包括:
进行切换请求响应后, 接收源 eNB发送的待传输数据的序列号以及 UE 要进行切换的其它载波所在的目标 eNB的标识信息;
根据所述标识信息与所述 UE要进行切换的其它载波所在的目标 eNB之 间传递调度信息。
本发明的实施例一种切换装置, 包括:
接收单元, 用于接收 UE上报的事件触发的测量报告;
确定单元, 用于根据所述测量报告确定将所述 UE切换到不同目标 eNB 的相应载波;
发送单元, 用于向所述不同目标 eNB或所述不同目标 eNB 中的主目标 eNB发送待传输数据的序列号以及所述 UE要进行切换的其它载波所在的目 标 eNB的标识信息。
本发明的实施例另一种切换装置, 包括:
接收单元, 用于在进行切换请求响应后, 接收源 eNB发送的待传输数据 的序列号以及 UE要进行切换的其它载波所在的目标 eNB的标识信息;
传递单元,用于根据所述标识信息与所述 UE要进行切换的其它载波所在 的目标 eNB之间传递调度信息。
本发明的实施例一种多载波小区切换系统, 包括: 第一切换装置, 设置于源 eNB上, 用于接收 UE上报的事件触发的测量 报告;根据所述测量报告确定将所述 UE切换到不同目标 eNB的相应载波上; 向所述不同目标 eNB或所述不同目标 eNB中的主目标 eNB中的第二切换装 置发送待传输数据的序列号以及所述 UE要进行切换的其它载波所在的目标 eNB的标识信息;
第二切换装置, 设置于目标 eNB上, 用于在进行切换请求响应后, 接收 源 eNB中的第一切换装置发送的待传输数据的序列号以及 UE要进行切换的 其它载波所在的目标 eNB的标识信息; 根据所述标识信息与所述 UE要进行 切换的其它载波所在的目标 eNB之间传递调度信息。
本发明实施例提供的多载波小区切换方法、装置和系统,根据 UE上报的 的事件触发的测量报告进行切换判决,如果确定要将 UE切换到不同目标 eNB 的相应载波上, 则向不同目标 eNB或所述不同目标 eNB中的主目标 eNB发 送待传输数据的序列号以及 UE要进行切换的其它载波所在的目标 eNB的标 识信息, 所述不同目标 eNB接收到序列号之后, 进行调度信息的传递, 实现 了多个 eNB通过多个载波与 UE之间进行数据的交互, 从而提高了 UE在小 区边缘切换过程中的数据吞吐量, 提高了数据传输效率。
附图说明 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性的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明的实施例多载波小区切换方法流程图;
图 2为本发明的另一实施例多载波小区切换方法流程图;
图 3为本发明的实施例一多载波小区切换方法流程图;
图 4为本发明的实施例二多载波小区切换方法流程图;
图 5为本发明的实施例多切换装置示意图;
图 6为本发明的实施例确定单元的示意图; 图 7为本发明的另一实施例切换装置示意图;
图 8为本发明的实施例传递单元的示意图。
具体实施方式
下面结合附图对本发明实施例多载波小区切换方法、 装置和系统进行详 细描述。
应当明确, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部的 实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作出创造性劳 动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
如图 1所示, 本发明的实施例一种多载波小区切换方法, 包括:
5101、 接收 UE上报的事件触发的测量报告;
5102、 根据所述测量报告确定将所述 UE切换到不同目标 eNB的相应载 波上;
5103、 向所述不同目标 eNB或所述不同目标 eNB中的主目标 eNB发送 待传输数据的序列号以及所述 UE要进行切换的其它载波所在的目标 eNB的 标识信息。
本发明的实施例另一种多载波小区切换方法, 包括:
5201、 接收源 eNB发送的待传输数据的序列号以及 UE要进行切换的其 它载波所在的目标 eNB的标识信息;
5202、 根据所述标识信息与所述 UE要进行切换的其它载波所在的目标 eNB之间传递调度信息。
本发明实施例提供的多载波小区切换方法,根据 UE上报的的事件触发的 测量报告进行切换判决, 如果确定要将 UE切换到不同目标 eNB的相应载波 上, 则向不同目标 eNB或所述不同目标 eNB中的主目标 eNB发送待传输数 据的序列号以及 UE要进行切换的其它载波所在的目标 eNB的标识信息, 所 述不同目标 eNB接收到序列号之后, 进行调度信息的传递, 实现了不同目标 eNB通过多载波与 UE之间进行数据的交互,从而提高了 UE在小区边缘切换 过程中的数据吞吐量, 提高了数据传输效率。 以下实施例一将以 UE移动到邻小区 1和邻小区 2的边缘时, UE切换到 邻小区 1所属的目标 eNBl和邻小区 2所属的目标 eNB2中的载波上为例, 对本发明的实施例进行详细说明。
在本实施例中, 目标 eNBl和目标 eNB2之间为并列关系。
如图 3所示, 本实施例可以包括如下步骤:
5301、 UE上报事件触发的测量报告。
可以由源 eNB向 UE下发一些测量的频点和控制信息。 在本实施例中, 当 UE移动到邻小区 1和邻小区 2的边缘时, UE在对小区进行测量后向源 eNB返回测量 4艮告(measurement reports )„ 在测量 4艮告中可以包括触发该测 量才艮告的事件的标识信息, 该 UE测量的邻小区 1 和邻小区 2的载波信息和 相应的测量值, 以及邻小区 1 和邻小区 2的标识信息。
5302、 接收到 UE的测量报告后, 源 eNB进行切换判决。
具体地,根据所述测量报告获取所述 UE的备选小区的相关信息, 并判断 所述备选小区是否为不同 eNB的不同小区。 如果不是, 则确定将所述 UE切 换到不同目标 eNB的相应载波上。 在本实施例中, 源 eNB确定要将 UE切换 邻小区 1所属的目标 eNBl和邻小区 2的所属的目标 eNB2中的载波上。
S303a〜 S303b、源 eNB向目标 eNBl和目标 eNB2发送切换请求( handover request ), 如图 3中所示的切换请求 1和切换请求 2。
S304 a〜 S304b, 目标 eNBl和目标 eNB2返回切换请求响应 (handover request Acknowledge ), 如图 3中所示的切换请求响应 1和切换请求响应 2。
S305、 源 eNB 对 UE 进行下行分配 (DL allocation)以及发送切换命令 ( handover command ), 使 UE在分配的下行资源上进行测量报告的上报, 并 通知 UE要进行目标小区的切换。
步骤 S303 S305均为现有技术, 这里不进行详述。
S306a〜S306b、 源 eNB 向目标 eNB 进行序列号状态传输 ( SN Status Transfer ), 包括图 3中所示的序列号状态传输 1和序列号状态传输 2。
在序列号状态传输中包括了待传输数据的序列号,以及 UE要切换到的其 它载波所在的目标 eNB的标识信息。 具体地, 在序列号状态传输 1中包括了 待传输数据的序列号以及目标 eNB2的标识信息,在序列号状态传输 2中包括 了待传输数据的序列号以及目标 eNB 1的标识信息。
如果所述不同目标 eNB的相应载波承载的是相同的业务, 多个目标 eNB 需要为该 UE的同一业务服务, 源 eNB需要给多个目标 eNB发送合适的序列 eNB。例如,视频业务的数据包的序列号有奇数和偶数, 源 eNB给目标 eNB 1 发送待传输数据的奇数序列号( SN Status Transfer 1 ),给目标 eNB 2发送待传 输数据的偶数序列号 (SN Status Transfer 2 )。 本发明的实施例并不局限于此, 在不同目标 eNB 的相应载波承载的是相同的业务时, 也可以向各个不同的 eNB发送相同的序列号。
如果不同目标 eNB的相应载波承载的是不同的业务, 则还可以根据不同 业务对 Qos的要求向不同目标 eNB发送待传输数据的不同的序列号。 例如根 据不同业务对 QoS的不同要求,优先将对 QoS要求较高的业务 (如实时视频业 务)分给信道状况相对较稳定, 可用资源较多的载波。 的方式的来选择对不同的 eNB传输不同的序列号或相同的序列号。 波所在的目标 eNB的标识信息。 例如, 另加一条信令来发送 UE要切换到的 其它载波所在的目标 eNB的标识信息。
S307a〜S307b 、 UE 向 目 标 eNBl 和目 标 eNB2 发送同步信号 ( Synchronization ) 1 , 和同步信号 2。
该步骤为现有技术, 不进行详述。
S308 a〜 S308c、 目标 eNBl和目标 eNB2在接收到序列号状态传输后, 则 进行调度信息的传递, 并分别向 UE发送上行分配和时间提前。
具体地, 可以由目标 eNBl 向 UE 发送上行分配和时间提前 (UL allocation+TA ) 1。 与此同时, 目标 eNBl还向目标 eNB2发送调度信息, 使 目标 eNB2能够配合目标 eNBl进行调度,从而发送合适的上行分配和时间提 前 2给 UE。
其中, 调度信息包括: 调度的规则, 如连续调度或间隔调度, 以及调度 的结果等。
本发明并不局限于此,也可以由 eNB2先向 UE发送上行分配和时间提前 信息,并向 eNBl发送调度信息,使目标 eNBl能够配合目标 eNB2进行调度, 从而发送合适的上行分配和时间提前信息给 UE。
eNBl与 eNB2之间的调度信息的发送, 可以由二者进行协商, 本发明的 实施例对此不做限定。
S309a〜 S309b、 UE 收到上行分配和时间提前信息后, 通过切换确认 ( handover confirm )告知目标 eNB 准备进行数据的传输, 包括发送给目标 eNBl的切换确认 1和发送给目标 eNB2的切换确认 2。
在 UE完成切换确认后, 则 eNBl和 eNB2会根据接收到的待传输数据的 序列号, 与 UE接续待传输数据的传输, 从而实现 UE从源 eNB到目标 eNBl 和 eNB2的切换, 实现了多载波小区的切换。
作为本发明的一个实施例, 所述源小区和目标小区的切换通过源 eNB和 目标 eNB的 X2接口通信,或者通过分别与所述源 eNB和目标 eNB相连接的 移动性管理实体(MME )进行通信。
实施例二将以 UE移动到邻小区 1和邻小区 2的边缘时, UE切换到邻小 区 1所属的主目标 eNB和邻小区 2所属的从目标 eNB中的载波上为例, 对 本发明的实施例进行详细说明。
在本实施例中, 目标 eNB包括主目标 eNB和从目标 eNB。
如图 4所示, 本实施例可以包括如下步骤:
步骤 S401 ~ S405与实施例一中的步骤 S301 ~ S305相同, 其中, eNBl 在本实施例中为主目标 eNB, eNB2在本实施例中为从目标 eNB, 这里不再赘 述具体步骤。
S406a ~ S406b、 源 eNB向主目标 eNB进行序列号状态传输( SN Status Transfer ) 以及发送 UE要切换到的其它载波所在的从目标 eNB的标识信息。 在序列号状态传输中包括了待传输数据的序列号。
如果从目标 eNB不只一个, 则向主目标 eNB发送所有从目标 eNB的标 识信息。
本发明的实施例还可以釆用其它方式来发送 UE要切换到的其它载波所 在的从目标 eNB的标识信息。例如,可以在序列号状态传输中包括从目标 eNB 的标识信息。 即, 对于本发明的实施例来说, 不限定是否在序列号状态传输 中包括从目标 eNB的标识信息,其它目标 eNB的标识信息可以通过多种方式 发送到源目标 eNB上。
S407、 主目标 eNB根据接收到的从目标 eNB的标识信息向从目标 eNB 发送序列号状态传输, 其中包括待传输数据的序列号。
主目标 eNB可以向各个从目标 eNB发送自身接收到的待传输数据的序列 号, 当然也可以釆用错开发送的方式, 将接收到的待传输数据的序列号发送 到不同的从目标 eNB上; 或者如果多个目标 eNB承载的是不同的业务, 则可
S408a ~ S408b、 UE 向主目标 eNB 和从目标 eNB 发送同步信号 ( Synchronization ) 1 , 和同步信号 2。
该步骤为现有技术, 不进行详述。
S409a ~ S409c、 主目标 eNB和从目标 eNB在接收到序列号状态后, 则进 行调度信息的传递, 并分别向 UE发送上行分配和时间提前。
具体地, 可以由目标主目标 eNB 向 UE发送上行分配和时间提前(UL allocation+TA ) 1。 与此同时, 主目标 eNB还向从目标 eNB发送调度信息, 使从目标 eNB能够配合主目标 eNB进行调度,从而发送合适的上行分配和时 间提前 2给 UE。
其中, 调度信息包括: 调度的规则, 如连续调度或间隔调度, 以及调度 的结果等。
S410a ~ S410b、 UE 收到上行分配和时间提前信息后, 通过切换确认 ( handover confirm )告知目标 eNB准备进行数据的传输, 包括发送给主目标 eNB的切换确认 1和发送给从目标 eNB的切换确认 2。
在 UE完成切换确认后, 则主目标 eNB和从目标 eNB会根据接收到的待 传输数据的序列号, 与 UE接续待传输数据的传输, 从而实现 UE从源 eNB 到主目标 eNB和从目标 eNB的切换, 实现了多载波小区的切换。
对于主从关系的 eNB, 核心网 (Core Network )只需与主 eNB之间有链 接, 对于并列关系的 eNB , 核心网与各个 eNB都有链接。
本发明的实施里多载波小区的切换方法, 通过源 eNB在进行切换判决之 后, 确定要将 UE切换到不同目标 eNB的多个载波上, 则根据需要向各个目 标 eNB或所述各个目标 eNB中的主目标 eNB发送相同或不同的序列号以及 UE要切换到的其它载波所在的目标 eNB的标识信息, 而目标 eNB在接收到 序列号后, 能够进行不同 eNB之间调度信息的传递, 从而能够在不同 eNB之 间进行与 UE数据传输的配合, 实现不同 eNB上多载波的数据传输, 提高了 UE的数据吞吐量。 如图 5所示, 本发明的实施例还提供了一种切换装置, 包括:
接收单元 51 , 用于接收 UE上报的事件触发的测量报告;
确定单元 52,用于根据所述测量报告确定将所述 UE切换到不同目标 eNB 的相应载波;
发送单元 53 , 用于向所述不同目标 eNB或所述不同目标 eNB中的主目 标 eNB发送待传输数据的序列号以及所述 UE要进行切换的其它载波所在的 目标 eNB的标识信息。
如图 6所示, 在本发明的一较佳实施例中, 进一步地, 所述确定单元 92 包括:
获取模块 521 , 用于根据所述测量报告获取所述 UE的备选小区的相关信 息;
判断模块 522, 用于判断所述备选小区为不同目标 eNB的不同小区时, 通知发送单元向所述不同目标 eNB发送所述待传输数据的序列号。
本实施例切换装置可以设置于 eNB上, 在上述实施例的基础上, 其中, 向所述不同目标 eNB发送的所述待传输数据的序列号可以是各不相同的。
并且本实施例可以参照如图 3 所示的实施例多载波小区切换方法中源 eNB的操作, 实现将 UE切换到不同的目标 eNB的载波上。
如图 7所示, 本发明的实施例还提供了另一种切换装置, 包括: 接收单元 71 , 用于接收源 eNB发送的待传输数据的序列号以及 UE要进 行切换的其它载波所在的目标 eNB的标识信息;
传递单元 72, 用于根据所述标识信息与所述 UE要进行切换的其它载波 所在的目标 eNB传递调度信息。
在上述方案的基础上, 所述切换装置还可以包括: 第一发送单元, 用于 在所述接收单元接收到所述待传输数据的序列号以及所述标识信息后, 根据 所述标识信息向所述 UE要进行切换的其它载波所在的目标 eNB发送所述待 传输数据的序列号。
本实施例提供的装置方案可以参照图 4所示的实施例多载波小区切换方 法中的主目标 eNB的操作, 实现将 UE切换到不同的目标 eNB的载波上。
在上述方案的基础上, 所述切换装置进一步包括: 第二发送单元, 用于 向 UE发送上行数据分配和时间提前信息;
并且, 所述传递单元 72进一步包括:
第一传递模块,用于在所述第二发送单元向 UE发送第一上行数据分配和 时间提前信息后, 向所述 UE要进行切换的其它载波所在的目标 eNB发送调 度信息, 所述的调度信息, 用于其它载波所在的目标 eNB能够根据所述调度 信息向所述 UE发送第二上行数据分配和时间提前信息; 或
第二传递模块, 用于接收 UE要进行切换的其它载波所在的目标 eNB发 送的调度信息,在接收之后,通知所述发送单元根据所述调度信息向 UE发送 上行数据分配和时间提前信息。
本方案可以参照如图 3或图 4所示的实施例多载波小区切换方法中的目 标 eNB的操作, 实现将 UE切换到不同的目标 eNB的载波上。
本实施例切换装置可以设置于 eNB上。
如图 8所示, 本发明的实施例还提供了一种多载波小区切换系统, 包括: 第一切换装置 81 , 设置于源 eNB上, 用于接收 UE上报的事件触发的测 量才艮告; 根据所述测量报告确定将所述 UE切换到不同目标 eNB的相应载波 上; 向设置于所述不同目标 eNB或所述不同目标 eNB中的主目标 eNB中的 第二切换装置 82发送待传输数据的序列号以及所述 UE要进行切换的其它载 波所在的目标 eNB的标识信息;
第二切换装置 82, 设置于目标 eNB上, 用于在进行切换请求响应后, 接 收源 eNB上的第一切换装置 81发送的待传输数据的序列号以及 UE要进行切 换的其它载波所在的目标 eNB的标识信息; 根据所述标识信息与所述 UE要 进行切换的其它载波所在的目标 eNB之间传递调度信息。
在上述方案的基础上, 本实施例优选在第一切换装置 81向不同的目标小 区的 eNB发送的是待传输数据的不同序列号。
本实施例多载波小区切换系统可以参照图 3、图 4所示的实施例多载波小 区切换方法中的源 eNB和目标 eNB的操作,实现将 UE切换到不同的目标 eNB 的载波上。
本发明实施例提供的切换装置和系统,根据 UE上报的事件触发的测量报 告进行切换判决, 如果确定要将 UE切换到不同目标 eNB的相应载波上, 则 向不同目标 eNB或所述不同目标 eNB中的主目标 eNB发送待传输数据的不 同序列号以及 UE要切换到的其它载波所在的目标 eNB的标识信息, 所述不 同目标 eNB接收到序列号之后, 进行调度信息的传递, 从而实现多个 eNB通 过多个载波与 UE之间进行数据的交互,从而提高了 UE在小区边缘切换过程 中的数据吞吐量, 提高了数据传输效率。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流 程, 是可以通过计算机程序来指令相关的硬件来完成, 所述的程序可存储于 一计算机可读取存储介质中, 该程序在执行时, 可包括如上述各方法的实施 例的流程。其中,所述的存储介质可为磁碟、光盘、只读存储记忆体( Read-Only Memory, ROM )或随机存^ "i己忆体 ( Random Access Memory, RAM )等。
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 想到的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保 护范围应以权利要求的保护范围为准。

Claims

权利 要求 书
1、 一种多载波小区切换方法, 其特征在于, 包括:
接收 UE上报的事件触发的测量报告;
根据所述测量报告确定将所述 UE切换到不同目标 eNB的相应载波上; 向所述不同目标 eNB或所述不同目标 eNB中的主目标 eNB发送待传输数 据的序列号以及所述 UE要进行切换的其它载波所在的目标 eNB的标识信息。
2、 根据权利要求 1所述的切换方法, 其特征在于, 根据所述测量报告确定 将所述 UE切换到不同目标 eNB的相应载波上, 包括:
根据所述测量报告获取所述 UE的备选小区的相关信息;
如果所述备选小区为不同 eNB的不同小区, 则确定将所述 UE切换到不同 目标 eNB的相应载波上。
3、根据权利要求 1所述的切换方法,其特征在于,所述向所述不同目标 eNB 或所述不同目标 eNB中的主目标 eNB发送待传输数据的序列号以及所述 UE要 进行切换的其它载波所在的目标 eNB的标识信息, 具体为:
如果各个目标 eNB为并列关系,则向各个目标 eNB发送待传输数据的序列 号以及所述 UE要进行切换的其它载波所在的目标 eNB的标识信息;
如果各个目标 eNB为主从关系,则向主目标 eNB发送待传输数据的序列号 以及所述 UE要进行切换的其它载波所在的从目标 eNB的标识信息。
4、根据权利要求 3所述的切换方法, 其特征在于, 如果各个目标 eNB为并 列关系, 则向各个目标 eNB发送待传输数据的序列号各不相同。
5、 根据权利要求 3或 4所述的切换方法, 其特征在于, 如果各个目标 eNB 为并列关系, 则向各个目标 eNB发送待传输数据的序列号以及所述 UE要进行 切换的其它载波所在的目标 eNB的标识信息, 包括:
如果所述不同目标 eNB的相应载波承载的是相同的业务, 则将所述待传输 数据的序列号直接发送或错开发送到所述不同目标 eNB, 同时向所述各个不同 目标 eNB发送所述 UE要进行切换的其它载波所在的目标 eNB的标识信息; 或 如果所述不同目标 eNB的相应载波承载的是不同的业务, 则根据不同业务 对 QoS 的要求向所述不同目标 eNB发送待传输数据的不同的序列号以及所述 UE要进行切换的其它载波所在的目标 eNB的标识信息。
6、 一种多载波小区切换方法, 其特征在于, 包括:
接收源 eNB发送的待传输数据的序列号以及 UE要进行切换的其它载波所 在的目标 eNB的标识信息;
根据所述标识信息与所述 UE要进行切换的其它载波所在的目标 eNB传递 调度信息。
7、 根据权利要求 6所述的切换方法, 其特征在于, 在接收到所述待传输数 据的序列号以及所述标识信息后, 进一步包括:
根据所述标识信息向所述 UE要进行切换的其它载波所在的目标 eNB发送 所述待传输数据的序列号。
8、 根据权利要求 6所述的切换方法, 其特征在于, 根据所述标识信息与所 述 UE要进行切换的其它载波所在的目标 eNB传递调度信息, 包括:
向 UE发送第一上行数据分配和时间提前信息,
并向所述 UE要进行切换的其它载波所在的目标 eNB发送调度信息, 所述 的调度信息, 用于其它载波所在的目标 eNB能够根据所述调度信息向所述 UE 发送第二上行数据分配和时间提前信息。
9、 根据权利要求 6所述的切换方法, 其特征在于, 根据所述标识信息与所 述 UE要进行切换的其它载波所在的目标 eNB传递调度信息, 包括:
接收 UE釆用的其它载波所在的目标 eNB发送的调度信息;
根据所述调度信息向 UE发送上行数据分配和时间提前信息。
10、根据权利要求 6所述的切换方法, 其特征在于, 所述 UE要进行切换的 各个载波所在的目标 eNB接收到的待传输数据的序列号各不相同。
11、 根据权利要求 6至 10中任一项所述的切换方法, 其特征在于, 所述调 度信息包括: 调度的规则或调度的结果。
12、 一种切换装置, 其特征在于, 包括:
接收单元, 用于接收 UE上报的事件触发的测量报告; 确定单元, 用于根据所述测量报告确定将所述 UE切换到不同目标 eNB的 相应载波; 发送待传输数据的序列号以及所述 UE要进行切换的其它载波所在的目标 eNB 的标识信息。
13、 根据权利要求 12所述的切换装置, 其特征在于, 所述确定单元包括: 获取模块, 用于根据所述测量报告获取所述 UE的备选小区的相关信息; 判断模块, 用于判断所述备选小区为不同目标 eNB的不同小区时, 通知发 送单元向所述不同目标 eNB发送所述待传输数据的序列号。
14、 一种切换装置, 其特征在于, 包括:
接收单元, 用于接收源 eNB发送的待传输数据的序列号以及 UE要进行切 换的其它载波所在的目标 eNB的标识信息;
传递单元 ,用于根据所述标识信息与所述 UE要进行切换的其它载波所在的 目标 eNB传递调度信息。
15、 根据权利要求 14所述的切换装置, 其特征在于, 还包括:
第一发送单元, 用于在所述接收单元接收到所述待传输数据的序列号以及 所述标识信息后,根据所述标识信息向所述 UE要进行切换的其它载波所在的目 标 eNB发送所述待传输数据的序列号。
16、 根据权利要求 14或 15所述的切换装置, 其特征在于,
所述切换装置进一步包括: 第二发送单元,用于向 UE发送上行数据分配和 时间提前信息;
所述传递单元进一步包括:
第一传递模块,用于在所述第二发送单元向 UE发送第一上行数据分配和时 间提前信息后, 向所述 UE要进行切换的其它载波所在的目标 eNB发送调度信 息, 所述的调度信息, 用于其它载波所在的目标 eNB能够根据所述调度信息向 所述 UE发送第二上行数据分配和时间提前信息; 或
第二传递模块, 用于接收 UE要进行切换的其它载波所在的目标 eNB发送 的调度信息,在接收之后,通知所述发送单元根据所述调度信息向 UE发送上行 数据分配和时间提前信息。
17、 一种多载波小区切换系统, 其特征在于, 包括:
第一切换装置, 设置于源 eNB上, 用于接收 UE上报的事件触发的测量报 告; 根据所述测量报告确定将所述 UE切换到不同目标 eNB的相应载波上; 向 所述不同目标 eNB或所述不同目标 eNB中的主目标 eNB中的第二切换装置发 送待传输数据的序列号以及所述 UE要进行切换的其它载波所在的目标 eNB的 标识信息;
所述第二切换装置, 设置于目标 eNB上, 用于在进行切换请求响应后, 接 收源 eNB中的所述第一切换装置发送的待传输数据的序列号以及 UE要进行切 换的其它载波所在的目标 eNB的标识信息; 根据所述标识信息与所述 UE要进 行切换的其它载波所在的目标 eNB之间传递调度信息。
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