WO2017054128A1 - 一种载波聚合技术中载波选择方法和设备 - Google Patents

一种载波聚合技术中载波选择方法和设备 Download PDF

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Publication number
WO2017054128A1
WO2017054128A1 PCT/CN2015/091060 CN2015091060W WO2017054128A1 WO 2017054128 A1 WO2017054128 A1 WO 2017054128A1 CN 2015091060 W CN2015091060 W CN 2015091060W WO 2017054128 A1 WO2017054128 A1 WO 2017054128A1
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WIPO (PCT)
Prior art keywords
channel information
carrier
scc
pcc
wireless channel
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Ceased
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PCT/CN2015/091060
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English (en)
French (fr)
Inventor
方旻曦
张岩强
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to JP2018515922A priority Critical patent/JP6541289B2/ja
Priority to KR1020187011560A priority patent/KR102041174B1/ko
Priority to PCT/CN2015/091060 priority patent/WO2017054128A1/zh
Priority to CN201580024648.5A priority patent/CN108029103A/zh
Priority to EP15905040.0A priority patent/EP3346784B1/en
Publication of WO2017054128A1 publication Critical patent/WO2017054128A1/zh
Priority to US15/938,136 priority patent/US20180220365A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/17—Selecting a data network PoA [Point of Attachment]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • 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
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H04W36/0044—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information of quality context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a carrier selection method and device in a carrier aggregation technology.
  • the Long Term Evolution (LTE) system has a maximum bandwidth of 20 Mhz.
  • LTE-A LTE-Advanced
  • the LTE-A system requires downlink 1 Gbps and uplink 500 Mbps. Obviously, the bandwidth of 20Mhz can no longer meet this demand.
  • 3GPP defines Carrier Aggregation (CA) technology in the Release 10 phase, that is, multiple carriers in the same frequency band or between different frequency bands are aggregated to form a larger bandwidth.
  • Serving user equipment (UE) at the same time as needed to provide the required rate. With CA, you can maximize resource utilization and make effective use of discrete spectrum resources.
  • CA Carrier Aggregation
  • the aggregated carrier consists of a primary component carrier (PCC) and one or more secondary component carriers (SCCs). Both the primary carrier and the secondary carrier can transmit service data and control information.
  • the cell corresponding to the primary carrier is a primary serving cell (Primary Cell, PCell for short), and the secondary cell corresponding to the secondary carrier is a secondary serving cell (Secondary Cell, SCell for short).
  • the PUCCH channel of the primary serving cell of the CA UE needs to carry an acknowledgement character (Acknowledgement, ACK)/Negative Acknowledgment (NACK) and channel state information of all the primary serving cells and all the secondary serving cells of the CA UE.
  • ACK acknowledgement character
  • NACK Negative Acknowledgment
  • Channel State Information CSI
  • Scheduling Request Policy Request
  • Information such as SR
  • the embodiments of the present invention provide a carrier selection method and device in a carrier aggregation technology, which are used to improve performance of a CA UE.
  • a carrier selection method in a carrier aggregation technology including:
  • the base station acquires the radio channel information reported by the CA user equipment UE, where the radio channel information includes the radio channel information of the PCC and the radio channel information of the SCC;
  • the base station When the wireless channel information of the SCC is greater than the wireless channel information of the PCC, the base station sends an RRC reconfiguration message to the CA UE, and the RRC reconfiguration message is used by the CA UE to use the SCC as a new PCC.
  • the CA UE periodically reports the radio channel information reported to the base station, and the base station periodically compares the radio channel information of the SCC reported by the CA UE with the size of the radio channel information of the PCC.
  • the radio channel information of the SCC is greater than the radio channel information of the PCC, specifically:
  • the wireless channel information of the SCC is greater than the wireless channel information of the PCC.
  • the wireless channel information of the SCC is greater than the wireless channel information of the PCC, specifically:
  • the value obtained by subtracting the wireless channel information of the PCC from the wireless channel information of the SCC is greater than a threshold.
  • the wireless channel information is any one of the following or a combination thereof:
  • CQI Channel Quality Indication
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • the CA UE can directly use the SCC as a new PCC.
  • the CA UE measures the SCC, and when the measurement result meets the measurement threshold, the CA UE uses the SCC as a new PCC.
  • the CA UE measures the SCC, specifically, the RSRP and/or the RSRQ of the SCC, and the measurement result meets the measurement threshold. Specifically, the measured value of the RSRP and/or the RSRQ of the SCC is greater than or equal to the measurement gate.
  • the limit value, the measurement threshold value is a preset empirical value.
  • the CA UE may report the radio channel information of the multiple SCCs to the base station.
  • the base station acquires the radio channel information of the SCCs of the two or more SCCs is greater than the radio channel information of the PCC
  • the base station sends the information to the CA UE.
  • the information of the two or more SCCs may be included in the transmitted RRC reconfiguration message.
  • the CA UE When the CA UE receives the RRC reconfiguration message including the SCCs of the two or more, the CA UE selects, from the SCCs included in the RRC reconfiguration message, any SCC whose measurement result meets the measurement threshold as the new PCC. Optionally, the CA UE selects, as the new PCC, the SCC whose radio channel information is the largest and the measurement result meets the measurement threshold from all the SCCs included in the RRC reconfiguration message.
  • the method further includes: the RRC reconfiguration message is further used by the CAUE to the PCC As a new SCC.
  • the RRC reconfiguration message includes information of the SCC that the one or more radio channel information determined by the base station is greater than the radio channel information of the PCC.
  • the base station acquires the radio channel information reported by the CA UE.
  • the radio channel information includes the radio channel information of the PCC and the radio channel information of the SCC.
  • the base station sends an RRC reconfiguration message to the CA UE.
  • the RRC reconfiguration message is used by the CA UE to treat the SCC as a new PCC.
  • the performance of the CA UE is improved.
  • a base station for carrier selection in a carrier aggregation technique including:
  • a transceiver unit configured to acquire wireless channel information reported by the CA UE, where the wireless channel information includes wireless channel information of the PCC and wireless channel information of the SCC;
  • a processing unit configured to: when the wireless channel information of the SCC is greater than the wireless channel information of the PCC, The transceiving unit sends an RRC reconfiguration message to the CA UE, and the RRC reconfiguration message is used by the CA UE to use the SCC as a new PCC.
  • the wireless channel information of the SCC is greater than the wireless channel information of the PCC, specifically:
  • the wireless channel information of the SCC is greater than the wireless channel information of the PCC.
  • the wireless channel information of the SCC is greater than the wireless channel information of the PCC, specifically:
  • the value obtained by subtracting the wireless channel information of the PCC from the wireless channel information of the SCC is greater than a threshold.
  • the wireless channel information is any one of the following or a combination thereof:
  • Channel quality indication CQI reference signal received power RSRP, reference signal received quality RSRQ.
  • the CA UE can directly use the SCC as a new PCC.
  • the CA UE measures the SCC, and when the measurement result meets the measurement threshold, the CA UE uses the SCC as a new PCC.
  • the CA UE measures the SCC, specifically, the RSRP and/or the RSRQ of the SCC, and the measurement result meets the measurement threshold. Specifically, the measured value of the RSRP and/or the RSRQ of the SCC is greater than or equal to the measurement gate.
  • the limit value, the measurement threshold value is a preset empirical value.
  • the CA UE may report the radio channel information of the multiple SCCs to the base station.
  • the base station acquires the radio channel information of the SCCs of the two or more SCCs is greater than the radio channel information of the PCC
  • the base station sends the information to the CA UE.
  • the information of the two or more SCCs may be included in the transmitted RRC reconfiguration message.
  • the CA UE When the CA UE receives the RRC reconfiguration message including the SCCs of the two or more, the CA UE selects, from the SCCs included in the RRC reconfiguration message, any SCC whose measurement result meets the measurement threshold as the new PCC. Optionally, the CA UE selects, as the new PCC, the SCC whose radio channel information is the largest and the measurement result meets the measurement threshold from all the SCCs included in the RRC reconfiguration message.
  • the RRC reconfiguration message is further used by the CA UE to use the PCC as a new SCC.
  • the base station acquires the radio channel information reported by the CA UE.
  • the radio channel information includes the radio channel information of the PCC and the radio channel information of the SCC.
  • the base station sends an RRC reconfiguration message to the CA UE.
  • the RRC reconfiguration message is used by the CA UE to treat the SCC as a new PCC.
  • the performance of the CA UE is improved.
  • a base station for carrier selection in a carrier aggregation technique including:
  • a processor for reading a program in the memory performing the following process:
  • the transceiver Obtaining, by the transceiver, the wireless channel information reported by the CA UE, where the wireless channel information includes the wireless channel information of the PCC and the wireless channel information of the SCC;
  • the RRC reconfiguration message is sent to the CA UE through the transceiver, and the RRC reconfiguration message is used by the CA UE to use the SCC as the new PCC.
  • the radio channel information of the SCC is greater than the radio channel information of the PCC, specifically:
  • the wireless channel information of the SCC is greater than the wireless channel information of the PCC.
  • the wireless channel information of the SCC is greater than the wireless channel information of the PCC, specifically:
  • the value obtained by subtracting the wireless channel information of the PCC from the wireless channel information of the SCC is greater than a threshold.
  • the wireless channel information is any one of the following or a combination thereof:
  • Channel quality indication CQI reference signal received power RSRP, reference signal received quality RSRQ.
  • the RRC reconfiguration message is further used by the CA UE to use the PCC as a new SCC.
  • the CA UE can directly use the SCC as a new PCC.
  • the CA UE measures the SCC, and when the measurement result meets the measurement threshold, the CA UE uses the SCC as a new PCC.
  • the CA UE measures the SCC, specifically, the RSRP and/or the RSRQ of the SCC, and the measurement result meets the measurement threshold. Specifically, the measured value of the RSRP and/or the RSRQ of the SCC is greater than or equal to the measurement gate.
  • the limit value, the measurement threshold value is a preset empirical value.
  • the CA UE may report the radio channel information of the multiple SCCs to the base station.
  • the base station acquires the radio channel information of the SCCs of the two or more SCCs is greater than the radio channel information of the PCC
  • the base station sends the information to the CA UE.
  • the information of the two or more SCCs may be included in the transmitted RRC reconfiguration message.
  • the CA UE When the CA UE receives the RRC reconfiguration message including the SCCs of the two or more, the CA UE selects, from the SCCs included in the RRC reconfiguration message, any SCC whose measurement result meets the measurement threshold as the new PCC. Optionally, the CA UE selects, as the new PCC, the SCC whose radio channel information is the largest and the measurement result meets the measurement threshold from all the SCCs included in the RRC reconfiguration message.
  • the RRC reconfiguration message is further used by the CA UE to use the PCC as a new SCC.
  • the base station acquires the radio channel information reported by the CA UE.
  • the radio channel information includes the radio channel information of the PCC and the radio channel information of the SCC.
  • the base station sends an RRC reconfiguration message to the CA UE.
  • the RRC reconfiguration message is used by the CA UE to treat the SCC as a new PCC.
  • the performance of the CA UE is improved.
  • a fourth aspect provides a carrier selection method in a carrier aggregation technology, including:
  • the carrier aggregates the radio channel information reported by the CA user equipment UE to the base station, and the radio channel information includes the radio channel information of the PCC and the radio channel information of the SCC;
  • the CA UE receives the RRC reconfiguration message sent by the base station, where the RRC reconfiguration message is sent by the base station when determining that the radio channel information of the SCC is greater than the radio channel information of the PCC;
  • the CA UE uses the SCC as a new PCC.
  • the CA UE can directly use the SCC as a new PCC.
  • the CA UE measures the SCC, and when the measurement result meets the measurement threshold, the CA UE uses the SCC as a new PCC.
  • the CA UE measures the SCC, specifically, the RSRP and/or the RSRQ of the SCC, and the measurement result meets the measurement threshold. Specifically, the measured value of the RSRP and/or the RSRQ of the SCC is greater than or equal to the measurement gate.
  • the limit value, the measurement threshold value is a preset empirical value.
  • the CA UE may report the radio channel information of the multiple SCCs to the base station.
  • the base station acquires the radio channel information of the SCCs of the two or more SCCs is greater than the radio channel information of the PCC
  • the base station sends the information to the CA UE.
  • the information of the two or more SCCs may be included in the transmitted RRC reconfiguration message.
  • the CA UE When the CA UE receives the RRC reconfiguration message including the SCCs of the two or more, the CA UE selects, from the SCCs included in the RRC reconfiguration message, any SCC whose measurement result meets the measurement threshold as the new PCC. Optionally, the CA UE selects, as the new PCC, the SCC whose radio channel information is the largest and the measurement result meets the measurement threshold from all the SCCs included in the RRC reconfiguration message.
  • the base station acquires the radio channel information reported by the CA UE.
  • the radio channel information includes the radio channel information of the PCC and the radio channel information of the SCC.
  • the base station sends an RRC reconfiguration message to the CA UE.
  • the RRC reconfiguration message is used by the CA UE to treat the SCC as a new PCC.
  • the performance of the CA UE is improved.
  • a fifth aspect provides a carrier selection method in a carrier aggregation technology, including:
  • the base station acquires the priority of the PCC of the CA UE and the priority of the SCC.
  • the method includes multiple modes. In one mode, the priority of the PCC and the priority of the SCC are pre-stored to the base station, and when the base station needs to use, the priority of the pre-stored PCC and the priority of the SCC are read.
  • the base station further includes a network interface, and the priority of the first carrier is stored in other network devices. When the base station needs to use, the priority of the PCC of the CA UE and the priority of the SCC are obtained through the network interface.
  • the base station When the priority of the SCC is greater than the priority of the PCC, the base station sends an RRC reconfiguration message to the CA UE, and the RRC reconfiguration message is used by the CA UE to use the SCC as a new PCC.
  • the RRC reconfiguration message includes one or more priorities determined by the base station that are greater than the priority of the PCC.
  • Level SCC information is one or more priorities determined by the base station that are greater than the priority of the PCC.
  • the base station also transmits indication information indicating the priority of the SCC included in the RRC reconfiguration message to the CA UE; the CA UE regards the SCC as a new PCC.
  • the CA UE can directly use the SCC as a new PCC.
  • the CA UE measures the SCC, and when the measurement result meets the measurement threshold, the CA UE uses the SCC as the new PCC; or when the measurement result does not meet the measurement threshold, the CA UE ends the current method flow.
  • the RRC reconfiguration message sent by the base station to the CA UE further includes indication information of the priority of the SCC.
  • the CA UE When the CA UE receives the RRC reconfiguration message including the SCCs of the two or more, the CA UE selects, from the SCCs included in the RRC reconfiguration message, any SCC whose measurement result meets the measurement threshold as the new PCC.
  • the CA UE may determine the priority of all the SCCs included in the RRC reconfiguration message according to the indication information of the priority of the SCC included in the RRC reconfiguration message, and the CA UE selects from all the SCCs included in the RRC reconfiguration message.
  • the SCC with the highest priority and whose measurement result satisfies the measurement threshold is used as the new PCC.
  • the priority of the preset PCC and the SCC in the base station may be sent by the operator or other personnel, and the priority configuration information is sent to the base station by using high layer signaling or notification, or by the operator or other personnel.
  • the priority configuration information is stored to the base station by direct storage, or the priority configuration information is placed in other base stations, servers or databases accessible by the base station.
  • the priority is determined based on the bandwidth and/or frequency band of the carrier.
  • the priority of the carrier may be set according to the bandwidth of the carrier. The wider the bandwidth of the carrier, the higher the priority of the carrier, and the narrower the bandwidth of the carrier, the lower the priority of the carrier.
  • the priority is set for the carrier. The lower the frequency band of the carrier, the higher the priority of the carrier, and the higher the frequency band of the carrier, the lower the priority of the carrier.
  • the weight of the bandwidth is greater than the weight of the frequency band, and thus, the proportion of the bandwidth in the carrier priority may be increased.
  • the weight value of the frequency band is larger than the weight value of the bandwidth, and thus, the proportion of the frequency band in the priority of the carrier may be increased.
  • a sixth aspect provides a carrier selection method in a carrier aggregation technology, including:
  • the CA UE receives the RRC reconfiguration message sent by the base station, where the RRC reconfiguration message is sent when the base station determines that the priority of the SCC is greater than the priority of the PCC;
  • the CA UE uses the SCC as a new PCC.
  • the CA UE also receives indication information sent by the base station to indicate the priority of the SCC included in the RRC reconfiguration message; the CA UE uses the SCC as a new PCC. Specifically, if the CA UE includes only one SCC in the RRC reconfiguration message, the CA UE measures the SCC in the RRC reconfiguration message, and when the measurement result meets the measurement threshold, the CA UE uses the SCC as the new PCC.
  • the CA UE can directly use the SCC as a new PCC.
  • the CA UE measures the SCC, and when the measurement result meets the measurement threshold, the CA UE uses the SCC as the new PCC; or when the measurement result does not meet the measurement threshold, the CA UE ends the current method flow.
  • the RRC reconfiguration message sent by the base station to the CA UE further includes indication information of the priority of the SCC.
  • the CA UE When the CA UE receives the RRC reconfiguration message including the SCCs of the two or more, the CA UE selects, from the SCCs included in the RRC reconfiguration message, any SCC whose measurement result meets the measurement threshold as the new PCC.
  • the CA UE may determine the priority of all the SCCs included in the RRC reconfiguration message according to the indication information of the priority of the SCC included in the RRC reconfiguration message, and the CA UE selects from all the SCCs included in the RRC reconfiguration message.
  • the SCC with the highest priority and whose measurement result satisfies the measurement threshold is used as the new PCC.
  • a seventh aspect provides a carrier selection method in a carrier aggregation technology, including:
  • the base station acquires the priority of the first carrier.
  • the method includes multiple modes. In one mode, the priority of the first carrier is pre-stored to the base station, and when the base station needs to be used, the priority of the first carrier stored in advance is read.
  • the base station further includes a network interface, and the priority of the first carrier is stored in other networks. In the network device, when the base station needs to use, the priority of the first carrier of the CA UE is obtained through the network interface.
  • the base station sends an RRC reconfiguration message to the CA UE, where the RRC reconfiguration message includes the information of the second carrier, and the RRC reconfiguration message is used by the CA UE to perform the second
  • the carrier is measured, and when the measurement result satisfies the measurement threshold, the second carrier is used as the PCC of the CA UE, where the first carrier and the second carrier are carriers capable of supporting the CA UE to perform CA.
  • the CA UE measures the second carrier included in the RRC reconfiguration message, and when the measurement result meets the measurement threshold, the CA UE The second carrier is used as the PCC.
  • the CA UE can directly use the second carrier as the PCC.
  • the CA UE includes at least two second carriers in the RRC reconfiguration message
  • one mode is that the CA UE selects any second carrier that meets the measurement threshold from all the second carriers included in the RRC reconfiguration message as a new one.
  • the CA UE selects, as the PCC, the second carrier with the highest priority and the measurement result that meets the measurement threshold from all the second carriers included in the RRC reconfiguration message.
  • the method further includes: The CA UE receives indication information sent by the base station to indicate the priority of each second carrier.
  • the base station acquires the priority of the first carrier, and if the priority of the first carrier is lower than the priority of the second carrier, the RRC reconfiguration is sent to the CA UE.
  • the message that the RRC reconfiguration message includes the information of the second carrier, and the CA UE performs the measurement of the second carrier, and when the measurement result meets the measurement threshold, the second carrier is used as the PCC of the CA UE, where the first carrier and the second carrier A carrier that can support the CA UE for CA.
  • the eighth aspect provides a carrier selection method in a carrier aggregation technology, including:
  • the carrier aggregation CA user equipment UE establishes an RRC connection with the base station on the first carrier;
  • the CA UE receives the RRC reconfiguration message sent by the base station, where the RRC reconfiguration message is sent by the base station when determining that the priority of the first carrier is lower than the priority of the second carrier, and the RRC reconfiguration message is sent.
  • Information including the second carrier;
  • the CA UE performs measurement of the second carrier, and when the measurement result meets the measurement threshold, the second carrier is used as the PCC of the CA UE, where the first carrier and the second carrier are carriers that can support the CA UE to perform CA.
  • the CA UE measures the second carrier included in the RRC reconfiguration message, and when the measurement result meets the measurement threshold, the CA UE The second carrier is used as the PCC.
  • the CA UE can directly use the second carrier as the PCC.
  • the CA UE includes at least two second carriers in the RRC reconfiguration message
  • one mode is that the CA UE selects any second carrier that meets the measurement threshold from all the second carriers included in the RRC reconfiguration message as a new one.
  • the CA UE selects, as the PCC, the second carrier with the highest priority and the measurement result that meets the measurement threshold from all the second carriers included in the RRC reconfiguration message.
  • the method further includes: The CA UE receives indication information sent by the base station to indicate the priority of each second carrier.
  • the base station acquires the radio channel information reported by the CA UE, where the radio channel information includes the radio channel information of the PCC and the radio channel information of the SCC.
  • the base station sends the CA UE to the CA UE.
  • An RRC reconfiguration message is sent, and the RRC reconfiguration message is used by the CA UE to use the SCC as a new PCC.
  • the performance of the CA UE is improved.
  • FIG. 1 is a schematic flowchart of a carrier selection method in a carrier aggregation technology according to an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart of a carrier selection method in a carrier aggregation technology according to an embodiment of the present disclosure
  • 2b is a schematic flowchart of a carrier selection method in a carrier aggregation technology according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of a base station used for carrier selection in a carrier aggregation technology according to an embodiment of the present disclosure
  • FIG. 3b is a schematic structural diagram of a CA UE used for carrier selection in a carrier aggregation technology according to an embodiment of the present disclosure
  • 3c is a schematic structural diagram of a base station used for carrier selection in a carrier aggregation technology according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of a CA UE used for carrier selection in a carrier aggregation technology according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of a base station used for carrier selection in a carrier aggregation technology according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of a CA UE used for carrier selection in a carrier aggregation technology according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a base station used for carrier selection in a carrier aggregation technology according to an embodiment of the present disclosure
  • FIG. 4b is a schematic structural diagram of a CA UE used for carrier selection in a carrier aggregation technology according to an embodiment of the present disclosure
  • 4c is a schematic structural diagram of a base station used for carrier selection in a carrier aggregation technology according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a CA UE used for carrier selection in a carrier aggregation technology according to an embodiment of the present disclosure
  • FIG. 4e is a schematic diagram of a base station used for carrier selection in a carrier aggregation technology according to an embodiment of the present invention. Schematic;
  • FIG. 4 is a schematic structural diagram of a CA UE used for carrier selection in a carrier aggregation technology according to an embodiment of the present invention.
  • the embodiments of the present invention are applicable to LTE, and other networks capable of supporting carrier aggregation technologies, such as a Universal Carrier Telecommunications Syste Terrestrial Radio Access Network (UTRAN). Supports the Downlink Dual Carrier (Enhanced Data Rate for GSM Evolution Radio Access Network, GERAN, etc.).
  • UTRAN Universal Carrier Telecommunications Syste Terrestrial Radio Access Network
  • GERAN Enhanced Data Rate for GSM Evolution Radio Access Network
  • CA UE specifically refers to a user equipment that has carrier aggregation (CA) capability and performs carrier aggregation.
  • user equipment includes, but is not limited to, a mobile station, a fixed or mobile subscriber unit, a pager, a cellular telephone, a Personal Digital Assistant (PDA), a computer, or any other type of user equipment capable of operating in a wireless environment.
  • base station includes, but is not limited to, a base station, a node, a station controller, an Access Point (AP), or any other type of interface device capable of operating in a wireless environment.
  • member carrier specifically refers to a carrier capable of CA.
  • FIG. 1 is a schematic flowchart diagram of a carrier selection method in a carrier aggregation technology according to an embodiment of the present invention.
  • an embodiment of the present invention provides a carrier selection method in a carrier aggregation technology, including:
  • Step 101 The base station acquires radio channel information reported by the CA UE, where the radio channel information includes radio channel information of the PCC and radio channel information of the SCC.
  • Step 102 When the wireless channel information of the SCC is greater than the wireless channel information of the PCC, the base station sends an RRC reconfiguration message to the CA UE, where the RRC reconfiguration message is used by the CA UE to use the SCC as a new PCC.
  • the wireless channel information is any one or a combination of the following: a channel quality indication (CQI), a reference signal receiving power (RSRP), and a reference signal receiving quality ( ReferenceSignalReceivingQuality, referred to as RSRQ).
  • CQI channel quality indication
  • RSRP reference signal receiving power
  • RSRQ reference signal receiving quality
  • the wireless channel information of the SCC is greater than the wireless channel information of the PCC, including: in the first time period, the wireless channel information of the SCC is greater than the wireless channel information of the PCC, or the wireless channel information of the SCC in the second time period.
  • the value obtained by subtracting the wireless channel information of the PCC is greater than the threshold.
  • the first time period and the second time period are preset empirical values.
  • the first time period and the second time period may be the same or different.
  • Those skilled in the art pre-set the above threshold according to a specific working environment or a type of wireless channel information.
  • the RRC reconfiguration message is further used by the CA UE to use the PCC as a new SCC.
  • FIG. 2a is a schematic flowchart showing a carrier selection method in a carrier aggregation technology according to an embodiment of the present invention, as shown in FIG. 2a.
  • Step 2101 The wireless channel information reported by the CA UE to the base station, where the wireless channel information includes the wireless channel information of the PCC and the wireless channel information of the SCC, and optionally, the wireless channel information that the CA UE periodically reports to the base station.
  • Step 2102 The base station compares the wireless channel information of the SCC reported by the CA UE with the size of the wireless channel information of the PCC. When determining that the wireless channel information of the SCC is greater than the wireless channel information of the PCC, the step 2106 is performed.
  • the base station when the CA UE periodically reports the wireless channel information to the base station, the base station periodically compares the wireless channel information of the SCC reported by the CA UE with the size of the wireless channel information of the PCC.
  • Step 2103 The base station sends an RRC reconfiguration message to the CA UE, where the RRC reconfiguration message is used.
  • the information including the SCC whose radio channel information determined by the base station is larger than the radio channel information of the PCC.
  • the information of the SCC may be the frequency of the SCC or other information capable of identifying the SCC.
  • Step 2104 The CA UE receives the RRC reconfiguration message sent by the base station.
  • step 2105 the CA UE uses the SCC as a new PCC.
  • the CA UE can directly use the SCC as a new PCC.
  • the CA UE measures the SCC, and when the measurement result meets the measurement threshold, the CA UE uses the SCC as the new PCC; or when the measurement result does not meet the measurement threshold, the CA UE ends the current method flow.
  • the CA UE measures the SCC, specifically, the RSRP and/or the RSRQ of the SCC, and the measurement result meets the measurement threshold. Specifically, the measured value of the RSRP and/or the RSRQ of the SCC is greater than or equal to the measurement gate.
  • the limit value, the measurement threshold value is a preset empirical value.
  • the CA UE may report the radio channel information of the multiple SCCs to the base station.
  • the base station acquires the radio channel information of the SCCs of the two or more SCCs is greater than the radio channel information of the PCC
  • the base station sends the information to the CA UE.
  • the information of the two or more SCCs may be included in the transmitted RRC reconfiguration message.
  • the CA UE When the CA UE receives the RRC reconfiguration message including the SCCs of the two or more, the CA UE selects, from the SCCs included in the RRC reconfiguration message, any SCC whose measurement result meets the measurement threshold as the new PCC. Optionally, the CA UE selects, as the new PCC, the SCC whose radio channel information is the largest and the measurement result meets the measurement threshold from all the SCCs included in the RRC reconfiguration message.
  • the method further includes:
  • Step 2106 The RRC reconfiguration message received by the CA UE is further used by the CA UE to use the PCC as a new SCC.
  • carrier aggregation is performed by using five carriers as an example for description.
  • the CA UE currently detects five carriers of carrier F1, carrier F2, carrier F3, carrier F4, and carrier F5.
  • the CA UE currently resides on the carrier F4, the carrier F4 is the current PCC of the CA UE, and the carrier F1, the carrier F2, the carrier F3, and the carrier F5 are the SCCs of the CA UE.
  • the CA UE reports the carrier F1, the carrier F2, the carrier F3, the carrier F4, and the carrier F5 to the base station.
  • Line channel information CQI.
  • the channel qualities of the five carriers of carrier F1, carrier F2, carrier F3, carrier F4 and carrier F5 are ranked from high to low in order: carrier F1, carrier F2, carrier F3, carrier F4 and carrier F5. That is, the channel quality of the carrier F1 is the highest, that is, the channel quality of the carrier F5 is the lowest.
  • the base station obtains the value obtained by subtracting the CQI of each SCC from the CQI of the PCC.
  • the SCC that the base station determines that the wireless channel information of the SCC minus the wireless channel information of the PCC is greater than the threshold is: carrier F1, carrier F2, and carrier F3.
  • the base station sends an RRC reconfiguration message to the CA UE, where the RRC reconfiguration message includes information of the carrier F1, the carrier F2, and the carrier F3.
  • the RRC reconfiguration message includes information of the carrier F1, the carrier F2, and the carrier F3.
  • it can be the frequency of the carrier F1, the frequency of the carrier F2, and the frequency of the carrier F3.
  • the CA UE performs RSRP measurement on the carrier F1, the carrier F2, and the carrier F3.
  • the measurement results of the carrier F1, the carrier F2, and the carrier F3 satisfy the measurement threshold, and the CA UE uses the SCC carrier F1 with the largest wireless channel information in all SCCs that meet the measurement threshold.
  • the CA UE camps on carrier F1 and uses carrier F4 as the new SCC.
  • the base station acquires the radio channel information of the PCC reported by the CA UE and the radio channel information of the SCC.
  • the base station sends an RRC reconfiguration message to the CA UE for the CA UE.
  • the performance of the CA UE is improved. For example, the access success rate, the reestablishment success rate, the call drop rate, the handover success rate, or the user rate, etc., also improve the user experience and improve the Key Performance Indicators (KPIs).
  • KPIs Key Performance Indicators
  • the base station obtains the better carrier of the CA UE as the primary carrier by acquiring the wireless channel information of the different component carriers.
  • the base station can obtain the priority information of the different component carriers, according to the priority of the component carrier,
  • the CA UE selects a carrier with a high priority as the primary carrier.
  • the base station acquires the priority of the PCC of the CA UE and the priority of the SCC, and the base station compares the priorities of the SCC and the PCC of the CA UE, and sends the priority to the CA UE when determining that the priority of the SCC is greater than the priority of the PCC.
  • An RRC reconfiguration message where the RRC reconfiguration message includes information of an SCC having a priority greater than a priority of the PCC, and the CA UE receives the RRC reconfiguration message sent by the base station, and uses the SCC as a new PCC.
  • the CA UE uses the PCC as the PCC. New SCC.
  • RRC The reconfiguration message also includes indication information of the priority of the SCC.
  • the CA UE can directly use the SCC as a new PCC.
  • the CA UE measures the SCC, and when the measurement result meets the measurement threshold, the CA UE uses the SCC as the new PCC; or when the measurement result does not meet the measurement threshold, the CA UE ends the current method flow.
  • the RRC reconfiguration message sent by the base station to the CA UE further includes indication information of the priority of the SCC.
  • the CA UE When the CA UE receives the RRC reconfiguration message including the SCCs of the two or more, the CA UE selects, from the SCCs included in the RRC reconfiguration message, any SCC whose measurement result meets the measurement threshold as the new PCC.
  • the CA UE may determine the priority of all the SCCs included in the RRC reconfiguration message according to the indication information of the priority of the SCC included in the RRC reconfiguration message, and the CA UE selects from all the SCCs included in the RRC reconfiguration message.
  • the SCC with the highest priority and whose measurement result satisfies the measurement threshold is used as the new PCC.
  • the priority of the preset PCC and the SCC in the base station may be sent by the operator or other personnel, and the priority configuration information is sent to the base station by using high layer signaling or notification, or by the operator or other personnel.
  • the priority configuration information is stored to the base station by direct storage, or the priority configuration information is placed in other base stations, servers or databases accessible by the base station.
  • the priority is determined based on the bandwidth and/or frequency band of the carrier.
  • the priority of the carrier may be set according to the bandwidth of the carrier. The wider the bandwidth of the carrier, the higher the priority of the carrier, and the narrower the bandwidth of the carrier, the lower the priority of the carrier.
  • the priority is set for the carrier. The lower the frequency band of the carrier, the higher the priority of the carrier, and the higher the frequency band of the carrier, the lower the priority of the carrier.
  • the weight of the bandwidth is greater than the weight of the frequency band, and thus, the proportion of the bandwidth in the carrier priority may be increased.
  • the weight value of the frequency band is larger than the weight value of the bandwidth, and thus, the proportion of the frequency band in the priority of the carrier may be increased.
  • the carrier has X carriers, which are carrier F1, carrier F2, carrier F3, ..., carrier Fx.
  • the carrier configures the X carriers as carriers that can perform carrier aggregation, and sets the X carriers. Priority.
  • the carrier sets a priority for each carrier according to the bandwidth of the X carriers, and the X carriers are sequentially ranked from the highest to the lowest according to the priority of the carrier F1, the carrier F2, the carrier F3, ..., the carrier Fx, that is, the carrier F1 has the highest priority.
  • Carrier Fx has the lowest priority.
  • the operator sends the priority of the carrier to the base station through high layer signaling.
  • the CA user equipment currently hears five carriers of carrier F1, carrier F2, carrier F3, carrier F4, and carrier F5.
  • the CA UE currently resides on carrier F4, which is the current PCC of the CA UE.
  • Carrier F1, carrier F2, carrier F3, and carrier F5 are SCCs of the CA UE.
  • the base station obtains the priorities of the five carriers of the carrier F1, the carrier F2, the carrier F3, the carrier F4, and the carrier F5, and determines whether the priority of the SCC is greater than the priority of the PCC, and when determining that the priority of the SCC is greater than the priority of the PCC, The base station sends reconfiguration information to the CA UE.
  • the SCC determines at this time that the SCCs with priorities greater than the priority of the PCC are: carrier F1, carrier F2, and carrier F3.
  • the base station sends an RRC reconfiguration message to the CA UE, where the RRC reconfiguration message includes information of the carrier F1, the carrier F2, and the carrier F3. For example, it can be the frequency of the carrier F1, the frequency of the carrier F2, and the frequency of the carrier F3.
  • the base station further sends indication information for indicating the priority of the SCC to the CA UE.
  • the indication information for indicating the priority of the SCC may be: the carrier F1 has the highest priority; the carrier F2 has the lower priority than the carrier F1. Priority, and greater than the priority of carrier F3; carrier F3 is the smallest.
  • the CA UE performs RSRP measurement on the carrier F1, the carrier F2, and the carrier F3.
  • the measurement results of the carrier F1, the carrier F2, and the carrier F3 satisfy the measurement threshold, and the CA UE takes the SCC carrier F1 with the highest priority among all the SCCs that meet the measurement threshold as the new one. PCC.
  • the base station may also select the PCC for the CA UE by the priority of the component carrier.
  • FIG. 2b is a schematic flow chart of a carrier selection method in a carrier aggregation technology according to an embodiment of the present invention. As shown in FIG. 2b, an embodiment of the present invention provides a carrier selection method in a carrier aggregation technology, including:
  • Step 2201 The CA UE establishes an RRC connection with the base station on the first carrier.
  • Step 2202 The base station acquires a priority of the first carrier.
  • Step 2203 The base station acquires a priority of the second carrier.
  • the first carrier and the second carrier are carriers that can support the CA UE to perform CA.
  • Step 2204 The base station compares the priorities of the first carrier and the second carrier. If the priority of the first carrier is lower than the priority of the second carrier, the base station sends an RRC reconfiguration message to the CA UE.
  • the RRC reconfiguration message includes information of the second carrier, and the information of the second carrier may be a frequency point of the second carrier or other information used to identify the second carrier.
  • the RRC reconfiguration message is used by the CA UE to perform measurement of the second carrier, and when the measurement result satisfies the measurement threshold, the second carrier is used as the PCC of the CA UE.
  • Step 2205 The CA UE receives the RRC reconfiguration message sent by the base station.
  • Step 2206 The CA UE performs measurement of the second carrier, and when the measurement result meets the measurement threshold, the second carrier is used as the PCC of the CA UE.
  • the CA UE measures the second carrier included in the RRC reconfiguration message, and when the measurement result meets the measurement threshold, the CA UE The second carrier is used as the PCC.
  • the CA UE can directly use the second carrier as the PCC.
  • the CA UE includes at least two second carriers in the RRC reconfiguration message
  • one mode is that the CA UE selects any second carrier that meets the measurement threshold from all the second carriers included in the RRC reconfiguration message as a new one.
  • the CA UE selects, as the PCC, the second carrier with the highest priority and the measurement result that meets the measurement threshold from all the second carriers included in the RRC reconfiguration message.
  • the method further includes: The CA UE receives indication information sent by the base station to indicate the priority of each second carrier.
  • the base station acquires the priority of the first carrier, and if the priority of the first carrier is lower than the priority of the second carrier, the RRC reconfiguration is sent to the CA UE.
  • the message that the RRC reconfiguration message includes the information of the second carrier, and the CA UE performs the measurement of the second carrier, and when the measurement result meets the measurement threshold, the second carrier is used as the PCC of the CA UE, where the first carrier and the second carrier A carrier that can support the CA UE for CA.
  • the performance of the CA UE is improved.
  • the indicator also improves the user experience and improves the network KPI.
  • FIG. 3 is a schematic structural diagram of a base station for carrier selection in a carrier aggregation technology according to an embodiment of the present invention.
  • an embodiment of the present invention provides a base station for carrier selection in a carrier aggregation technology, for performing the method shown in FIG. 1 and/or FIG. 2a, including a transceiver unit 3101 and a processing unit 3102:
  • a transceiver unit configured to acquire wireless channel information reported by the CA UE, where the wireless channel information includes wireless channel information of the PCC and wireless channel information of the SCC;
  • the processing unit is configured to: when the wireless channel information of the SCC is greater than the wireless channel information of the PCC, send, by the transceiver unit, an RRC reconfiguration message to the CA UE, where the RRC reconfiguration message is used by the CA UE to use the SCC as the new PCC.
  • the wireless channel information of the SCC is greater than the wireless channel information of the PCC, specifically:
  • the wireless channel information of the SCC is greater than the wireless channel information of the PCC.
  • the wireless channel information of the SCC is greater than the wireless channel information of the PCC, specifically:
  • the value obtained by subtracting the wireless channel information of the PCC from the wireless channel information of the SCC is greater than a threshold.
  • the wireless channel information is any one of the following or a combination thereof:
  • Channel quality indication CQI reference signal received power RSRP, reference signal received quality RSRQ.
  • the RRC reconfiguration message is further used by the CA UE to use the PCC as a new SCC.
  • FIG. 3b is a schematic structural diagram of a CA UE for carrier selection in a carrier aggregation technology according to an embodiment of the present invention.
  • an embodiment of the present invention provides a CA UE for carrier selection in a carrier aggregation technology, which is used to perform the method shown in FIG. 2a, including a transceiver unit 3201 and a processing unit 3202:
  • a transceiver unit configured to report the wireless channel information to the base station, where the wireless channel information includes the wireless channel information of the PCC and the wireless channel information of the SCC;
  • the receiving base station sends an RRC reconfiguration message, where The RRC reconfiguration message is sent by the base station when determining that the radio channel information of the SCC is greater than the radio channel information of the PCC;
  • the base station acquires the radio channel information of the PCC reported by the CA UE and the radio channel information of the SCC.
  • the base station sends an RRC reconfiguration message to the CA UE for the CA UE.
  • the performance of the CA UE is improved.
  • FIG. 3 is a schematic structural diagram of a base station for carrier selection in a carrier aggregation technology according to an embodiment of the present invention.
  • an embodiment of the present invention provides a base station for carrier selection in a carrier aggregation technology, including a transceiver unit 3301 and a processing unit 3302:
  • the processing unit is configured to acquire a priority of the PCC of the CA UE and a priority of the SCC.
  • the method may include multiple modes, where the priority of the PCC and the priority of the SCC are pre-stored to the base station, and when the base station needs to be used, the priority of the pre-stored PCC and the priority of the SCC are read by the processing unit.
  • the base station further includes an obtaining unit 3303.
  • the priority of the PCC and the priority of the SCC are stored in other network devices. When the base station needs to be used, the priority of the PCC of the CA UE and the SCC are acquired by the acquiring unit. Priority.
  • the processing unit is further configured to: when the priority of the SCC is greater than the priority of the PCC, send, by the transceiver unit, an RRC reconfiguration message to the CA UE, where the RRC reconfiguration message is used by the CA UE to use the SCC as the new PCC.
  • the priority is determined based on the bandwidth and/or frequency band of the carrier.
  • the method further includes: the RRC reconfiguration message is further used by the CA UE to use the PCC as a new SCC.
  • the RRC reconfiguration message includes information of at least two SCCs
  • the transceiver unit is also used to:
  • the indication information indicating the priority of each SCC is sent to the CA UE, so that the CA UE measures each SCC, and the SCC with the highest priority is used as the new PCC in the SCC whose measurement result satisfies the measurement threshold.
  • the indication information indicating the priority of each SCC is included in the inclusion At least two SCCs in the RRC reconfiguration message.
  • FIG. 3 is a schematic structural diagram of a CA UE for carrier selection in a carrier aggregation technology according to an embodiment of the present invention.
  • an embodiment of the present invention provides a CA UE for carrier selection in a carrier aggregation technology, including a transceiver unit 3401 and a processing unit 3402:
  • a transceiver unit configured to receive an RRC reconfiguration message sent by the base station, where the RRC reconfiguration message is sent when the base station determines that the priority of the SCC is greater than the priority of the PCC;
  • the priority is determined based on the bandwidth and/or frequency band of the carrier.
  • the processing unit is further configured to: use the PCC as a new SCC.
  • the RRC reconfiguration message includes information of at least two SCCs
  • the transceiver unit is also used to:
  • Processing unit specifically for:
  • the measurement is performed for each SCC, and the SCC with the highest priority is taken as the new PCC in the SCC whose measurement result satisfies the measurement threshold.
  • the priority of the PCC of the CA UE and the priority of the SCC are obtained.
  • the RRC reconfiguration message is sent to the CA UE through the transceiver unit, and the RRC reconfiguration message is used for the CA UE.
  • FIG. 3 e is a schematic structural diagram of a base station for carrier selection in a carrier aggregation technology according to an embodiment of the present invention.
  • an embodiment of the present invention provides a base station for carrier selection in a carrier aggregation technology, which is used to perform the method shown in FIG. 2b, and includes a transceiver unit 3501 and a processing unit 3502:
  • a processing unit configured to: when the CA UE establishes an RRC connection with the base station on the first carrier, acquire a priority of the first carrier.
  • the method includes multiple modes. In one mode, the priority of the first carrier is pre-stored to the base station, and when the base station needs to be used, the priority of the pre-stored first carrier is read by the processing unit.
  • the base station further includes an obtaining unit 3503. The priority of the first carrier is stored in another network device. When the base station needs to be used, the priority of the first carrier of the CA UE is acquired by the acquiring unit.
  • the processing unit is further configured to: when the priority of the first carrier is lower than the priority of the second carrier, send an RRC reconfiguration message to the CA UE by using the transceiver unit, where the RRC reconfiguration message includes the information of the second carrier, and the RRC reconfiguration The message is used by the CA UE to perform measurement of the second carrier, and when the measurement result meets the measurement threshold, the second carrier is used as the PCC of the CA UE, where the first carrier and the second carrier are carriers capable of supporting the CA UE to perform CA.
  • the priority is determined based on the bandwidth and/or frequency band of the carrier.
  • processing unit is further configured to:
  • the priority of the second carrier is obtained.
  • the RRC reconfiguration message includes information of at least two second carriers
  • the transceiver unit is also used to:
  • the second carrier acts as a new PCC.
  • FIG. 3 is a schematic structural diagram of a CA UE for carrier selection in a carrier aggregation technology according to an embodiment of the present invention.
  • an embodiment of the present invention provides a CA UE for carrier selection in a carrier aggregation technology, which is used to perform the method shown in FIG. 2b, and includes a transceiver unit 3601 and a processing unit 3602:
  • a transceiver unit configured to receive, by the base station, an RRC reconfiguration message, where the RRC reconfiguration message is a priority that the base station acquires the first carrier, and is sent when determining that the priority of the first carrier is lower than the priority of the second carrier,
  • the RRC reconfiguration message includes information of the second carrier;
  • a processing unit configured to establish an RRC connection with the base station in the first carrier; perform measurement of the second carrier, and when the measurement result meets the measurement threshold, use the second carrier as the PCC of the CA UE, where the first carrier and the second carrier A carrier that can support the CA UE for CA.
  • the priority is determined based on the bandwidth and/or frequency band of the carrier.
  • the RRC reconfiguration message includes information of at least two second carriers
  • the transceiver unit is also used to:
  • Processing unit specifically for:
  • the second carrier is measured for each second carrier, and the second carrier with the highest priority is used as the new PCC in the second carrier whose measurement result satisfies the measurement threshold.
  • the base station acquires the priority of the first carrier, and if the priority of the first carrier is lower than the priority of the second carrier, the RRC reconfiguration is sent to the CA UE.
  • the message that the RRC reconfiguration message includes the information of the second carrier, and the CA UE performs the measurement of the second carrier, and when the measurement result meets the measurement threshold, the second carrier is used as the PCC of the CA UE, where the first carrier and the second carrier A carrier that can support the CA UE for CA.
  • FIG. 4 is a schematic structural diagram of a base station for carrier selection in a carrier aggregation technology according to an embodiment of the present invention.
  • an embodiment of the present invention provides a base station for carrier selection in a carrier aggregation technology, including a transceiver 4101, a processor 4102, and a memory 4103:
  • FIG. 4b is a schematic structural diagram of a CA UE for carrier selection in a carrier aggregation technology according to an embodiment of the present invention.
  • an embodiment of the present invention provides a CA UE for carrier selection in a carrier aggregation technology, including a transceiver 4201, a processor 4202, a memory 4203, and a user interface 4204:
  • FIG. 4 is a schematic structural diagram of a base station for carrier selection in a carrier aggregation technology according to an embodiment of the present invention.
  • an embodiment of the present invention provides a base station for carrier selection in a carrier aggregation technology, including a transceiver 4301, a processor 4302, and a memory 4303:
  • a processor that reads a program in memory and performs the following procedures:
  • the method may include multiple modes, where the priority of the PCC and the priority of the SCC are pre-stored to the base station, and when the base station needs to be used, the priority of the pre-stored PCC and the priority of the SCC are read by the processor.
  • the base station further includes a network interface 4304. The priority of the PCC and the priority of the SCC are stored in other network devices. When the base station needs to use, the priority of the PCC of the CA UE and the SCC are acquired through the network interface. Priority
  • the RRC reconfiguration message is sent to the CA UE by the transceiver unit, and the RRC reconfiguration message is used by the CA UE to use the SCC as the new PCC.
  • the priority is determined based on the bandwidth and/or frequency band of the carrier.
  • the indication information indicating the priority of each SCC is included in an RRC reconfiguration message including at least two SCCs.
  • FIG. 4 is a schematic structural diagram of a CA UE for carrier selection in a carrier aggregation technology according to an embodiment of the present invention.
  • an embodiment of the present invention provides a CA UE for carrier selection in a carrier aggregation technology, including a transceiver 4401, a processor 4402, a memory 4403, and a user interface 4404:
  • a processor for reading a program in the memory performing the following process:
  • FIG. 4 e is a schematic structural diagram of a base station used for carrier selection in a carrier aggregation technology according to an embodiment of the present invention.
  • an embodiment of the present invention provides a base station for carrier selection in a carrier aggregation technology, including a transceiver 4501, a processor 4502, and a memory 4503:
  • the processor 4502 is configured to acquire the priority of the first carrier when the CA UE establishes an RRC connection with the base station in the first carrier.
  • the step specifically includes multiple manners.
  • the priority of the first carrier is pre-stored to the base station, and when the base station needs to be used, the priority of the pre-stored first carrier is read by the processor.
  • the base station further includes a network interface 4504. The priority of the first carrier is stored in other network devices. When the base station needs to be used, the priority of the first carrier of the CA UE is obtained through the network interface.
  • FIG. 4 is a schematic structural diagram of a CA UE for carrier selection in a carrier aggregation technology according to an embodiment of the present invention.
  • an embodiment of the present invention provides a CA UE for carrier selection in a carrier aggregation technology, including a transceiver 4601, a processor 4602, a memory 4603, and a user interface 4604:
  • embodiments of the present invention can be provided as a method, or a computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • a computer usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the computer readable memory is stored in the computer readable memory.
  • the instructions in the production result include an article of manufacture of an instruction device that implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

一种载波聚合技术中载波选择方法和设备，用以提高CA UE的性能。本发明实施例中，基站获取CA UE上报PCC的无线信道信息和SCC的无线信道信息，当SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送包含SCC信息的RRC重配置消息，用于CA UE将SCC作为新的PCC。

Description

一种载波聚合技术中载波选择方法和设备 技术领域
本发明涉及无线通信技术领域，尤其涉及一种载波聚合技术中载波选择方法和设备。
背景技术
长期演进(Long Term Evolution，简称LTE)系统，最大带宽为20Mhz。对于增强长期演进(LTE-Advanced，简称LTE-A)系统，LTE-A系统的峰值速率比LTE系统有了很大的提高，LTE-A系统要求达到下行1Gbps，上行500Mbps。显然，20Mhz的带宽已经无法满足这种需求。为了让LTE-A系统能够符合要求，3GPP在版本10阶段定义了载波聚合(Carrier Aggregation，简称CA)技术，即将在同一个频段内或者不同频段间的多个载波聚合在一起形成更大带宽，在需要时同时为用户设备(user equipment，简称UE)服务，以提供所需的速率。通过CA，可以最大化资源利用率、有效利用离散的频谱资源。
聚合的载波由一个主载波(Primary Component Carrier，简称PCC)和一个或者多个辅载波(Secondary Component Carrier，简称SCC)组成。主载波和辅载波上均可以发送业务数据和控制信息。主载波对应的小区为主服务小区(Primary Cell，简称PCell)，辅载波对应的小区为辅服务小区(Secondary Cell，简称SCell)。
根据3GPP 36.300的规定，对于CA UE来说，只有CA UE的主服务小区才有物理上行链路控制信道(Physical Uplink Control CHannel，简称为PUCCH)信道。CA UE的的主服务小区的PUCCH信道需要承载该CA UE所有主服务小区和所有辅服务小区的上行确认字符(Acknowledgement，简称ACK)/否定确认字符(Negative Acknowledgment，简称NACK)、信道状态信息(Channel State Information，简称CSI)、调度请求(Scheduling Request， 简称SR)等信息。可见，CA UE的主服务小区负荷较重。若CA UE的主服务小区负荷过重，则会出现拥塞状况，也会对CA UE的性能，比如接入成功率、重建成功率、掉话率、切换成功率或用户速率等带来严重影响。
发明内容
本发明实施例提供一种载波聚合技术中载波选择方法和设备，用以提高CA UE的性能。
第一方面，提供一种载波聚合技术中的载波选择方法，包括：
基站获取CA用户设备UE上报的无线信道信息，无线信道信息包括PCC的无线信道信息和SCC的无线信道信息；
当SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。
可选地，CA UE周期性向基站上报的无线信道信息，基站周期性对CA UE上报的SCC的无线信道信息和PCC的无线信道信息的大小进行比较。
结合第一方面，在第一方面的第一种可能的实现方式中，SCC的无线信道信息大于PCC的无线信道信息，具体为：
在第一时间段内，SCC的无线信道信息大于PCC的无线信道信息。
结合第一方面，在第一方面的第二种可能的实现方式中，SCC的无线信道信息大于PCC的无线信道信息，具体为：
在第二时间段内，SCC的无线信道信息减去PCC的无线信道信息所得到的值大于阈值。
结合第一方面至第一方面的第二种可能的实现方式中任一种实施方式，在第一方面的第三种可能的实现方式中，无线信道信息为以下的任一项或其组合：
信道质量指示(Channels quality indication，简称为：CQI)、参考信号接收功率(Reference Signal Receiving Power,简称RSRP)、参考信号接收质量(ReferenceSignalReceivingQuality，简称RSRQ)。
CA UE可以直接将该SCC作为新的PCC。可选的，CA UE对该SCC进行测量，当测量结果满足测量门限时，CA UE将SCC作为新的PCC。
具体来说，CA UE对SCC进行测量，具体可为测量该SCC的RSRP和/或RSRQ，测量结果满足测量门限具体可为测量得到的该SCC的RSRP和/或RSRQ的值大于或等于测量门限值，测量门限值为一个预设的经验值。
可选的，当存在多个SCC时，CA UE可向基站上报多个SCC的无线信道信息，当基站获取2个及以上的SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送的RRC重配置消息中可包含该2个及以上的SCC的信息。
当CA UE收到包含2个及以上的SCC的RRC重配置消息，可选的，CA UE从RRC重配置消息包括的所有SCC中选择任一个测量结果满足测量门限的SCC作为新的PCC，可选的，CA UE从RRC重配置消息包括的所有SCC中选择无线信道信息最大的且测量结果满足测量门限的SCC作为新的PCC。
结合第一方面至第一方面的第三种可能的实现方式中任一种实施方式，在第一方面的第四种可能的实现方式中，还包括：RRC重配置消息还用于CAUE将PCC作为新的SCC。
该RRC重配置消息中包括基站确定出的一个或多个无线信道信息大于PCC的无线信道信息的SCC的信息。
基站获取CA UE上报的无线信道信息，无线信道信息包括PCC的无线信道信息和SCC的无线信道信息，当SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。如此，通过选择更好的载波作为PCC，提高了CA UE的性能。
第二方面，提供一种用于载波聚合技术中的载波选择的基站，包括：
收发单元，用于获取CA UE上报的无线信道信息，无线信道信息包括PCC的无线信道信息和SCC的无线信道信息；
处理单元，用于当SCC的无线信道信息大于PCC的无线信道信息时，通 过收发单元向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。
结合第二方面，在第二方面的第一种可能的实现方式中，SCC的无线信道信息大于PCC的无线信道信息，具体为：
在第一时间段内，SCC的无线信道信息大于PCC的无线信道信息。
结合第二方面，在第二方面的第二种可能的实现方式中，SCC的无线信道信息大于PCC的无线信道信息，具体为：
在第二时间段内，SCC的无线信道信息减去PCC的无线信道信息所得到的值大于阈值。
结合第二方面至第二方面的第二种可能的实现方式中任一种实施方式，在第二方面的第三种可能的实现方式中，无线信道信息为以下的任一项或其组合：
信道质量指示CQI、参考信号接收功率RSRP、参考信号接收质量RSRQ。
CA UE可以直接将该SCC作为新的PCC。可选的，CA UE对该SCC进行测量，当测量结果满足测量门限时，CA UE将SCC作为新的PCC。
具体来说，CA UE对SCC进行测量，具体可为测量该SCC的RSRP和/或RSRQ，测量结果满足测量门限具体可为测量得到的该SCC的RSRP和/或RSRQ的值大于或等于测量门限值，测量门限值为一个预设的经验值。
可选的，当存在多个SCC时，CA UE可向基站上报多个SCC的无线信道信息，当基站获取2个及以上的SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送的RRC重配置消息中可包含该2个及以上的SCC的信息。
当CA UE收到包含2个及以上的SCC的RRC重配置消息，可选的，CA UE从RRC重配置消息包括的所有SCC中选择任一个测量结果满足测量门限的SCC作为新的PCC，可选的，CA UE从RRC重配置消息包括的所有SCC中选择无线信道信息最大的且测量结果满足测量门限的SCC作为新的PCC。
结合第二方面至第二方面的第三种可能的实现方式中任一种实施方式， 在第二方面的第四种可能的实现方式中，RRC重配置消息还用于CA UE将PCC作为新的SCC。
基站获取CA UE上报的无线信道信息，无线信道信息包括PCC的无线信道信息和SCC的无线信道信息，当SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。如此，通过选择更好的载波作为PCC，提高了CA UE的性能。
第三方面，提供一种用于载波聚合技术中的载波选择的基站，包括：
处理器，用于读取存储器中的程序，执行下列过程：
通过收发器获取CA UE上报的无线信道信息，无线信道信息包括PCC的无线信道信息和SCC的无线信道信息；
当SCC的无线信道信息大于PCC的无线信道信息时，通过收发器向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。
结合第三方面，在第三方面的第一种可能的实现方式中，SCC的无线信道信息大于PCC的无线信道信息，具体为：
在第一时间段内，SCC的无线信道信息大于PCC的无线信道信息。
结合第三方面，在第三方面的第二种可能的实现方式中，SCC的无线信道信息大于PCC的无线信道信息，具体为：
在第二时间段内，SCC的无线信道信息减去PCC的无线信道信息所得到的值大于阈值。
结合第三方面至第三方面的第二种可能的实现方式中任一种实施方式，在第三方面的第三种可能的实现方式中，无线信道信息为以下任一项或其组合：
信道质量指示CQI、参考信号接收功率RSRP、参考信号接收质量RSRQ。
结合第三方面至第三方面的第三种可能的实现方式中任一种实施方式，在第三方面的第四种可能的实现方式中，RRC重配置消息还用于CA UE将PCC作为新的SCC。
CA UE可以直接将该SCC作为新的PCC。可选的，CA UE对该SCC进行测量，当测量结果满足测量门限时，CA UE将SCC作为新的PCC。
具体来说，CA UE对SCC进行测量，具体可为测量该SCC的RSRP和/或RSRQ，测量结果满足测量门限具体可为测量得到的该SCC的RSRP和/或RSRQ的值大于或等于测量门限值，测量门限值为一个预设的经验值。
可选的，当存在多个SCC时，CA UE可向基站上报多个SCC的无线信道信息，当基站获取2个及以上的SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送的RRC重配置消息中可包含该2个及以上的SCC的信息。
当CA UE收到包含2个及以上的SCC的RRC重配置消息，可选的，CA UE从RRC重配置消息包括的所有SCC中选择任一个测量结果满足测量门限的SCC作为新的PCC，可选的，CA UE从RRC重配置消息包括的所有SCC中选择无线信道信息最大的且测量结果满足测量门限的SCC作为新的PCC。
结合第二方面至第二方面的第三种可能的实现方式中任一种实施方式，在第二方面的第四种可能的实现方式中，RRC重配置消息还用于CA UE将PCC作为新的SCC。
基站获取CA UE上报的无线信道信息，无线信道信息包括PCC的无线信道信息和SCC的无线信道信息，当SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。如此，通过选择更好的载波作为PCC，提高了CA UE的性能。
第四方面，提供一种载波聚合技术中的载波选择方法，包括：
载波聚合CA用户设备UE向基站上报的无线信道信息，无线信道信息包括PCC的无线信道信息和SCC的无线信道信息；
CA UE接收基站发送RRC重配置消息，其中，RRC重配置消息是基站在确定SCC的无线信道信息大于PCC的无线信道信息时发送的；
CA UE将SCC作为新的PCC。
CA UE可以直接将该SCC作为新的PCC。可选的，CA UE对该SCC进行测量，当测量结果满足测量门限时，CA UE将SCC作为新的PCC。
具体来说，CA UE对SCC进行测量，具体可为测量该SCC的RSRP和/或RSRQ，测量结果满足测量门限具体可为测量得到的该SCC的RSRP和/或RSRQ的值大于或等于测量门限值，测量门限值为一个预设的经验值。
可选的，当存在多个SCC时，CA UE可向基站上报多个SCC的无线信道信息，当基站获取2个及以上的SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送的RRC重配置消息中可包含该2个及以上的SCC的信息。
当CA UE收到包含2个及以上的SCC的RRC重配置消息，可选的，CA UE从RRC重配置消息包括的所有SCC中选择任一个测量结果满足测量门限的SCC作为新的PCC，可选的，CA UE从RRC重配置消息包括的所有SCC中选择无线信道信息最大的且测量结果满足测量门限的SCC作为新的PCC。
基站获取CA UE上报的无线信道信息，无线信道信息包括PCC的无线信道信息和SCC的无线信道信息，当SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。如此，通过选择更好的载波作为PCC，提高了CA UE的性能。
第五方面，提供一种载波聚合技术中的载波选择方法，包括：
基站获取CA UE的PCC的优先级和SCC的优先级。具体包括多种方式，一种方式，PCC的优先级和SCC的优先级预先存储至基站，基站需要使用时，读取预先存储的PCC的优先级和SCC的优先级。另一种可替代的方式为，基站还包括网络接口，第一载波的优先级存储于其它网络设备中，基站需要使用时，通过网络接口获取CA UE的PCC的优先级和SCC的优先级。
当SCC的优先级大于PCC的优先级时，基站向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。
RRC重配置消息中包括基站确定出的一个或多个优先级大于PCC的优先 级的SCC的信息。
基站还向CA UE发送用于指示RRC重配置消息中包括的SCC的优先级的指示信息；CA UE将SCC作为新的PCC。CA UE可以直接将该SCC作为新的PCC。可选的，CA UE对该SCC进行测量，当测量结果满足测量门限时，CA UE将SCC作为新的PCC；或者，当测量结果不满足测量门限时，CA UE结束当前方法流程。
可选的，当基站获取2个及以上的SCC的优先级大于PCC的优先级时，基站向CA UE发送的RRC重配置消息中还包括SCC的优先级的指示信息。
当CA UE收到包含2个及以上的SCC的RRC重配置消息，可选的，CA UE从RRC重配置消息包括的所有SCC中选择任一个测量结果满足测量门限的SCC作为新的PCC，可选的，CA UE可根据RRC重配置消息中包括的SCC的优先级的指示信息，确定出RRC重配置消息包括的所有SCC的优先级，进而CA UE从RRC重配置消息包括的所有SCC中选择优先级最高的且测量结果满足测量门限的SCC作为新的PCC。
可选地，基站中预设的PCC和SCC的优先级可通过运营商或其它人员进行设置之后，通过高层信令或通知的方式将优先级配置信息发送给基站，或者由运营商或其它人员通过直接存储的方式将优先级配置信息存储至基站，或者将优先级配置信息放置于基站可访问到的其它基站、服务器或数据库中。
优先级是根据载波的带宽和/或频段确定的。具体来说，可根据载波的带宽为载波设置优先级，载波的带宽越宽，则载波的优先级越高，载波的带宽越窄，则载波的优先级越低。或者，根据载波的频段为载波设置优先级，载波的频段越低，则载波的优先级越高，载波的频段越高，则载波的优先级越低。或者，根据载波的带宽和频段为载波设置优先级，为带宽和频段分别设置一个权重值。可选地，带宽的权重值比频段的权重值大，如此，则可加大带宽在载波优先级中所占的比重。可选地，频段的权重值比带宽的权重值大，如此，则可加大频段在载波的优先级中所占的比重。
如此，通过在CA UE驻留过程中为该CA UE选择优先级高的成员载波作 为PCC，提高了CA UE的性能。
第六方面，提供一种载波聚合技术中的载波选择方法，包括：
CA UE接收基站发送的RRC重配置消息，其中，RRC重配置消息是基站确定SCC的优先级大于PCC的优先级时发送的；
CA UE将SCC作为新的PCC。
CA UE还接收基站发送的用于指示RRC重配置消息中包括的SCC的优先级的指示信息；CA UE将SCC作为新的PCC。具体来说，若CA UE对RRC重配置消息中仅包括一个SCC，则CA UE对RRC重配置消息中包括该SCC进行测量，当测量结果满足测量门限时，CA UE将SCC作为新的PCC。
CA UE可以直接将该SCC作为新的PCC。可选的，CA UE对该SCC进行测量，当测量结果满足测量门限时，CA UE将SCC作为新的PCC；或者，当测量结果不满足测量门限时，CA UE结束当前方法流程。
可选的，当基站获取2个及以上的SCC的优先级大于PCC的优先级时，基站向CA UE发送的RRC重配置消息中还包括SCC的优先级的指示信息。
当CA UE收到包含2个及以上的SCC的RRC重配置消息，可选的，CA UE从RRC重配置消息包括的所有SCC中选择任一个测量结果满足测量门限的SCC作为新的PCC，可选的，CA UE可根据RRC重配置消息中包括的SCC的优先级的指示信息，确定出RRC重配置消息包括的所有SCC的优先级，进而CA UE从RRC重配置消息包括的所有SCC中选择优先级最高的且测量结果满足测量门限的SCC作为新的PCC。
如此，通过在CA UE驻留过程中为该CA UE选择优先级高的成员载波作为PCC，提高了CA UE的性能。
第七方面，提供一种载波聚合技术中的载波选择方法，包括：
当载波聚合CA用户设备UE在第一载波与基站建立RRC连接，基站获取第一载波的优先级。具体包括多种方式，一种方式，第一载波的优先级预先存储至基站，基站需要使用时，读取预先存储的第一载波的优先级。另一种可替代的方式为，基站还包括网络接口，第一载波的优先级存储于其它网 络设备中，基站需要使用时，通过网络接口获取CA UE的第一载波的优先级。
若第一载波的优先级低于第二载波的优先级，则基站向CA UE下发RRC重配置消息，RRC重配置消息包含第二载波的信息，RRC重配置消息用于CA UE进行第二载波的测量，且当测量结果满足测量门限时，将第二载波作为CA UE的PCC，其中，第一载波和第二载波为能支持CA UE进行CA的载波。
具体来说，若CA UE对RRC重配置消息中仅包括一个第二载波，则CA UE对RRC重配置消息中包括的该第二载波进行测量，当测量结果满足测量门限时，CA UE将第二载波作为PCC，可选的，CA UE也可直接将该第二载波作为PCC。
若CA UE对RRC重配置消息中包括至少两个第二载波，一种方式为CA UE从RRC重配置消息包括的所有第二载波中选择任一个测量结果满足测量门限的第二载波作为新的PCC；另一种方式为，CA UE从RRC重配置消息包括的所有第二载波中选择优先级最高的且测量结果满足测量门限的第二载波作为PCC，在该方式下，该方法还包括，CA UE接收基站发送的用于指示每个第二载波的优先级的指示信息。
可看出，当CA UE选择第一载波驻留基站时，基站获取第一载波的优先级，若第一载波的优先级低于第二载波的优先级，则向CA UE下发RRC重配置消息，RRC重配置消息包含第二载波的信息，CA UE进行第二载波的测量，且当测量结果满足测量门限时，将第二载波作为CA UE的PCC，其中，第一载波和第二载波为能支持CA UE进行CA的载波。如此，通过在CA UE驻留过程中为该CA UE选择优先级高的成员载波作为PCC，提高了CA UE的性能。
第八方面，提供一种载波聚合技术中的载波选择方法，包括：
载波聚合CA用户设备UE在第一载波与基站建立RRC连接；
CA UE接收基站下发RRC重配置消息；其中，RRC重配置消息是基站在确定第一载波的优先级低于第二载波的优先级时发送的，RRC重配置消息 包含第二载波的信息；
CA UE进行第二载波的测量，且当测量结果满足测量门限时，将第二载波作为CA UE的PCC，其中，第一载波和第二载波为能支持CA UE进行CA的载波。
具体来说，若CA UE对RRC重配置消息中仅包括一个第二载波，则CA UE对RRC重配置消息中包括的该第二载波进行测量，当测量结果满足测量门限时，CA UE将第二载波作为PCC，可选的，CA UE也可直接将该第二载波作为PCC。
若CA UE对RRC重配置消息中包括至少两个第二载波，一种方式为CA UE从RRC重配置消息包括的所有第二载波中选择任一个测量结果满足测量门限的第二载波作为新的PCC；另一种方式为，CA UE从RRC重配置消息包括的所有第二载波中选择优先级最高的且测量结果满足测量门限的第二载波作为PCC，在该方式下，该方法还包括，CA UE接收基站发送的用于指示每个第二载波的优先级的指示信息。
如此，通过在CA UE驻留过程中为该CA UE选择优先级高的成员载波作为PCC，提高了CA UE的性能。
本发明实施例中，基站获取CA UE上报的无线信道信息，无线信道信息包括PCC的无线信道信息和SCC的无线信道信息，当SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。如此，通过选择更好的载波作为PCC，提高了CA UE的性能。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，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，对于本领域的普通技术人员来讲，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为本发明实施例提供的一种载波聚合技术中载波选择方法流程示意图；
图2a为本发明实施例提供的一种载波聚合技术中载波选择方法流程示意图；
图2b为本发明实施例提供的一种载波聚合技术中载波选择方法流程示意图；
图3a为本发明实施例提供的一种用于载波聚合技术中载波选择的基站的结构示意图；
图3b为本发明实施例提供的一种用于载波聚合技术中载波选择的CA UE结构示意图；
图3c为本发明实施例提供的一种用于载波聚合技术中载波选择的基站的结构示意图；
图3d为本发明实施例提供的一种用于载波聚合技术中载波选择的CA UE结构示意图；
图3e为本发明实施例提供的一种用于载波聚合技术中载波选择的基站的结构示意图；
图3f为本发明实施例提供的一种用于载波聚合技术中载波选择的CA UE结构示意图；
图4a为本发明实施例提供的一种用于载波聚合技术中载波选择的基站的结构示意图；
图4b为本发明实施例提供的一种用于载波聚合技术中载波选择的CA UE结构示意图；
图4c为本发明实施例提供的一种用于载波聚合技术中载波选择的基站的结构示意图；
图4d为本发明实施例提供的一种用于载波聚合技术中载波选择的CA UE结构示意图；
图4e为本发明实施例提供的一种用于载波聚合技术中载波选择的基站的 结构示意图；
图4f为本发明实施例提供的一种用于载波聚合技术中载波选择的CA UE结构示意图。
具体实施方式
为了使本发明的目的、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明实施例适用于LTE，以及其它能够支持载波聚合技术的网络，比如支持双载波技术(Dual Carrier)通用移动通信系统陆地无线接入网(Universal Mobile Telecommunications Syste Terrestrial Radio Access Network，简称UTRAN)，支持下行双载波技术(Downlink Dual Carrier)增强型数据速率全球移动通信系统演进技术无线接入网(Global System for Mobile Communication Enhanced Data Rate for GSM Evolution Radio Access Network，简称GERAN)等。
本发明实施例中，术语“CA UE”具体是指具有载波聚合(carrier aggregation，简称CA)能力，且进行载波聚合的用户设备。术语“用户设备”包括但不限于移动站、固定或移动用户单元、寻呼机、蜂窝电话、个人数字助理(Personal Digital Assistant，简称PDA)、计算机或任何其它类型的能在无线环境中工作的用户设备。术语“基站”包括但不限于基站、节点、站控制器、接入点(Access Point，简称AP)、或任何其它类型的能够在无线环境中工作的接口设备。术语“成员载波”具体是指能够进行CA的载波。
本发明实施例可以用于各种CA场景，不限于站内CA、站间CA、异构网CA等。图1示例性示出本发明实施例提供的一种载波聚合技术中载波选择方法流程示意图。
如图1所示，本发明实施例提供一种载波聚合技术中载波选择方法，包括：
步骤101，基站获取CA UE上报的无线信道信息，无线信道信息包括PCC的无线信道信息和SCC的无线信道信息；
步骤102，当SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。
可选地，无线信道信息为以下的任一项或其组合：信道质量指示(Channels quality indication，简称为：CQI)、参考信号接收功率(Reference Signal Receiving Power,简称RSRP)、参考信号接收质量(ReferenceSignalReceivingQuality，简称RSRQ)。
可选地，SCC的无线信道信息大于PCC的无线信道信息，包括：在第一时间段内，SCC的无线信道信息大于PCC的无线信道信息，或在第二时间段内，SCC的无线信道信息减去PCC的无线信道信息所得到的值大于阈值。
上述第一时间段和第二时间段为预设的经验值。第一时间段和第二时间段可相同也可不同。本领域技术人员根据具体工作环境或无线信道信息类型预先设定上述阈值。
可选的，RRC重配置消息还用于CA UE将PCC作为新的SCC。
为了更加详细的介绍上述方法流程，图2a示例性示出本发明实施例提供的一种载波聚合技术中载波选择方法流程示意图，如图2a所示：
步骤2101，CA UE向基站上报的无线信道信息，无线信道信息包括PCC的无线信道信息和SCC的无线信道信息，可选地，CA UE周期性向基站上报的无线信道信息。
步骤2102，基站对CA UE上报的SCC的无线信道信息和PCC的无线信道信息的大小进行比较，在确定SCC的无线信道信息大于PCC的无线信道信息时，执行步骤2106。
可选地，当CA UE周期性向基站上报无线信道信息时，基站周期性对CA UE上报的SCC的无线信道信息和PCC的无线信道信息的大小进行比较。
步骤2103，基站向CA UE发送RRC重配置消息，该RRC重配置消息中 包括基站确定出的无线信道信息大于PCC的无线信道信息的SCC的信息。具体来说，SCC的信息可为该SCC的频点或其它能够标识出该SCC的信息。
步骤2104，CA UE接收基站发送RRC重配置消息。
步骤2105，CA UE将SCC作为新的PCC。
CA UE可以直接将该SCC作为新的PCC。可选的，CA UE对该SCC进行测量，当测量结果满足测量门限时，CA UE将SCC作为新的PCC；或者，当测量结果不满足测量门限时，CA UE结束当前方法流程。
具体来说，CA UE对SCC进行测量，具体可为测量该SCC的RSRP和/或RSRQ，测量结果满足测量门限具体可为测量得到的该SCC的RSRP和/或RSRQ的值大于或等于测量门限值，测量门限值为一个预设的经验值。
可选的，当存在多个SCC时，CA UE可向基站上报多个SCC的无线信道信息，当基站获取2个及以上的SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送的RRC重配置消息中可包含该2个及以上的SCC的信息。
当CA UE收到包含2个及以上的SCC的RRC重配置消息，可选的，CA UE从RRC重配置消息包括的所有SCC中选择任一个测量结果满足测量门限的SCC作为新的PCC，可选的，CA UE从RRC重配置消息包括的所有SCC中选择无线信道信息最大的且测量结果满足测量门限的SCC作为新的PCC。
可选地，该方法还包括：
步骤2106，CA UE接收到的RRC重配置消息还用于CA UE将PCC作为新的SCC。
为了更清楚介绍上述方法，本发明实施例中以5个载波进行载波聚合为例进行描述：
CA UE当前侦听到载波F1、载波F2、载波F3、载波F4和载波F5五个载波。CA UE当前驻留在载波F4上，载波F4即为CA UE的当前的PCC，载波F1、载波F2、载波F3和载波F5为CA UE的SCC。
CA UE向基站上报载波F1、载波F2、载波F3、载波F4和载波F5的无 线信道信息：CQI。载波F1、载波F2、载波F3、载波F4和载波F5五个载波的信道质量按从高到低依次排序为：载波F1、载波F2、载波F3、载波F4和载波F5。即载波F1的信道质量最高，即载波F5的信道质量最低。
在第二时间段内，基站获取每个SCC的CQI减去PCC的CQI得到的值。
示例的，基站确定出SCC的无线信道信息减去PCC的无线信道信息所得到的值大于阈值的SCC分别为：载波F1、载波F2、载波F3。
基站向CA UE发送RRC重配置消息，RRC重配置消息中包括载波F1、载波F2、载波F3的信息。比如可为载波F1的频点、载波F2的频点和载波F3的频点。
CA UE对载波F1、载波F2和载波F3进行RSRP测量，载波F1、载波F2和载波F3的测量结果均满足测量阈值，CA UE将满足测量阈值的所有SCC中无线信道信息最大的SCC载波F1作为新的PCC，CA UE驻留到载波F1上，并将载波F4作为新的SCC。
可看出，基站获取CA UE上报的PCC的无线信道信息和SCC的无线信道信息，当SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送RRC重配置消息，用于CA UE将SCC作为新的PCC。通过选择更好的载波作为PCC，提高了CA UE的性能。比如接入成功率、重建成功率、掉话率、切换成功率或用户速率等指标，也提高了用户体验，提升了网络关键性能指标(Key Performance Indicators，简称KPI)。
上述方法中，基站通过获取不同成员载波的无线信道信息，为CA UE选更好的载波作为主载波，可选的，基站可以获取不同成员载波的优先级信息，根据成员载波的优先级，为CA UE选取优先级高的载波作为主载波。
具体来说，基站获取CA UE的PCC的优先级和SCC的优先级，基站对CA UE的SCC和PCC的优先级进行比较，并在确定SCC的优先级大于PCC的优先级时向CA UE发送RRC重配置消息，该RRC重配置消息中包括优先级大于PCC的优先级的SCC的信息，CA UE接收基站发送RRC重配置消息，将SCC作为新的PCC，可选地，CA UE将PCC作为新的SCC。其中，RRC 重配置消息中还包括SCC的优先级的指示信息。
上述方法流程中，CA UE可以直接将该SCC作为新的PCC。可选的，CA UE对该SCC进行测量，当测量结果满足测量门限时，CA UE将SCC作为新的PCC；或者，当测量结果不满足测量门限时，CA UE结束当前方法流程。
可选的，当基站获取2个及以上的SCC的优先级大于PCC的优先级时，基站向CA UE发送的RRC重配置消息中还包括SCC的优先级的指示信息。
当CA UE收到包含2个及以上的SCC的RRC重配置消息，可选的，CA UE从RRC重配置消息包括的所有SCC中选择任一个测量结果满足测量门限的SCC作为新的PCC，可选的，CA UE可根据RRC重配置消息中包括的SCC的优先级的指示信息，确定出RRC重配置消息包括的所有SCC的优先级，进而CA UE从RRC重配置消息包括的所有SCC中选择优先级最高的且测量结果满足测量门限的SCC作为新的PCC。
可选地，基站中预设的PCC和SCC的优先级可通过运营商或其它人员进行设置之后，通过高层信令或通知的方式将优先级配置信息发送给基站，或者由运营商或其它人员通过直接存储的方式将优先级配置信息存储至基站，或者将优先级配置信息放置于基站可访问到的其它基站、服务器或数据库中。
优先级是根据载波的带宽和/或频段确定的。具体来说，可根据载波的带宽为载波设置优先级，载波的带宽越宽，则载波的优先级越高，载波的带宽越窄，则载波的优先级越低。或者，根据载波的频段为载波设置优先级，载波的频段越低，则载波的优先级越高，载波的频段越高，则载波的优先级越低。或者，根据载波的带宽和频段为载波设置优先级，为带宽和频段分别设置一个权重值。可选地，带宽的权重值比频段的权重值大，如此，则可加大带宽在载波优先级中所占的比重。可选地，频段的权重值比带宽的权重值大，如此，则可加大频段在载波的优先级中所占的比重。
为了更清楚介绍上述方法流程，本发明实施例中提供以下示例：
运营商有X个载波，分别为载波F1、载波F2、载波F3、…、载波Fx，运营商将该X个载波均配置为可以进行载波聚合的载波，并设置该X个载波 的优先级。运营商依据该X个载波的带宽为每个载波设置优先级，X个载波按优先级从高至低依次为载波F1、载波F2、载波F3、…、载波Fx，即载波F1的优先级最高，载波Fx的优先级最低。
运营商将载波的优先级通过高层信令发送给基站。
CA 用户设备当前侦听到载波F1、载波F2、载波F3、载波F4和载波F5五个载波。CA UE当前驻留在载波F4上，载波F4即为CA UE的当前的PCC。载波F1、载波F2、载波F3和载波F5为CA UE的SCC。
基站获取载波F1、载波F2、载波F3、载波F4和载波F5五个载波的优先级，并确定SCC的优先级是否大于PCC的优先级，在确定存在SCC的优先级大于PCC的优先级时，基站向CA UE发送重配置信息。基站此时确定出优先级大于PCC的优先级的SCC分别为：载波F1、载波F2、载波F3。
基站向CA UE发送RRC重配置消息，RRC重配置消息中包括载波F1、载波F2、载波F3的信息。比如可为载波F1的频点、载波F2的频点和载波F3的频点。基站还向CA UE发送用于指示SCC的优先级的指示信息；具体来说，用于指示SCC的优先级的指示信息可为：载波F1的优先级最高；载波F2的优先级小于载波F1的优先级，且大于载波F3的优先级；载波F3最小。
CA UE对载波F1、载波F2和载波F3进行RSRP测量，载波F1、载波F2和载波F3的测量结果均满足测量阈值，CA UE将满足测量阈值的所有SCC中优先级最高的SCC载波F1作为新的PCC。
在CA UE驻留的过程中，基站也可以通过成员载波的优先级为CA UE选择PCC。
图2b示例性示出本发明实施例提供的一种载波聚合技术中载波选择方法流程示意图。如图2b所示，本发明实施例提供一种载波聚合技术中载波选择方法，包括：
步骤2201，CA UE在第一载波上与基站建立RRC连接；
步骤2202，基站获取第一载波的优先级；
步骤2203，基站获取第二载波的优先级；第一载波和第二载波为能支持CA UE进行CA的载波。
步骤2204，基站对第一载波和第二载波的优先级进行比较，若第一载波的优先级低于第二载波的优先级，则基站向CA UE下发RRC重配置消息。RRC重配置消息包含第二载波的信息，第二载波的信息可为第二载波的频点或者其它用于标识出第二载波的信息。RRC重配置消息用于CA UE进行第二载波的测量，且当测量结果满足测量门限时，将第二载波作为CA UE的PCC。
步骤2205，CA UE接收基站发送RRC重配置消息。
步骤2206，CA UE进行第二载波的测量，且当测量结果满足测量门限时，将第二载波作为CA UE的PCC。
具体来说，若CA UE对RRC重配置消息中仅包括一个第二载波，则CA UE对RRC重配置消息中包括的该第二载波进行测量，当测量结果满足测量门限时，CA UE将第二载波作为PCC，可选的，CA UE也可直接将该第二载波作为PCC。
若CA UE对RRC重配置消息中包括至少两个第二载波，一种方式为CA UE从RRC重配置消息包括的所有第二载波中选择任一个测量结果满足测量门限的第二载波作为新的PCC；另一种方式为，CA UE从RRC重配置消息包括的所有第二载波中选择优先级最高的且测量结果满足测量门限的第二载波作为PCC，在该方式下，该方法还包括，CA UE接收基站发送的用于指示每个第二载波的优先级的指示信息。
可看出，当CA UE选择第一载波驻留基站时，基站获取第一载波的优先级，若第一载波的优先级低于第二载波的优先级，则向CA UE下发RRC重配置消息，RRC重配置消息包含第二载波的信息，CA UE进行第二载波的测量，且当测量结果满足测量门限时，将第二载波作为CA UE的PCC，其中，第一载波和第二载波为能支持CA UE进行CA的载波。如此，通过在CA UE驻留过程中为该CA UE选择优先级高的成员载波作为PCC，提高了CA UE的性能。比如接入成功率、重建成功率、掉话率、切换成功率或用户速率等 指标，也提高了用户体验，提升了网络KPI。
图3a示例性示出本发明实施例提供的一种用于载波聚合技术中的载波选择的基站的结构示意图。
如图3a所示，本发明实施例提供一种用于在载波聚合技术中载波选择的基站，用于执行图1和/或图2a所示的方法，包括收发单元3101、处理单元3102：
收发单元，用于获取CA UE上报的无线信道信息，无线信道信息包括PCC的无线信道信息和SCC的无线信道信息；
处理单元，用于当SCC的无线信道信息大于PCC的无线信道信息时，通过收发单元向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。
可选地，SCC的无线信道信息大于PCC的无线信道信息，具体为：
在第一时间段内，SCC的无线信道信息大于PCC的无线信道信息。
可选地，SCC的无线信道信息大于PCC的无线信道信息，具体为：
在第二时间段内，SCC的无线信道信息减去PCC的无线信道信息所得到的值大于阈值。
可选地，无线信道信息为以下的任一项或其组合：
信道质量指示CQI、参考信号接收功率RSRP、参考信号接收质量RSRQ。
可选地，RRC重配置消息还用于CA UE将PCC作为新的SCC。
图3b示例性示出本发明实施例提供的一种用于载波聚合技术中的载波选择的CA UE的结构示意图。
基于相同构思，如图3b所示，本发明实施例提供一种用于在载波聚合技术中载波选择的CA UE，用于执行图2a所示的方法，包括收发单元3201、处理单元3202：
收发单元，用于向基站上报的无线信道信息，无线信道信息包括PCC的无线信道信息和SCC的无线信道信息；接收基站发送RRC重配置消息，其中， RRC重配置消息是基站在确定SCC的无线信道信息大于PCC的无线信道信息时发送的；
处理单元，用于将SCC作为新的PCC。
可看出，基站获取CA UE上报的PCC的无线信道信息和SCC的无线信道信息，当SCC的无线信道信息大于PCC的无线信道信息时，基站向CA UE发送RRC重配置消息，用于CA UE将SCC作为新的PCC。如此，通过选择更好的载波作为PCC，提高了CA UE的性能。
图3c示例性示出本发明实施例提供的一种用于载波聚合技术中的载波选择的基站的结构示意图。
基于相同构思，如图3c所示，本发明实施例提供一种用于在载波聚合技术中载波选择的基站，包括收发单元3301、处理单元3302：
处理单元，用于获取CA UE的PCC的优先级和SCC的优先级。具体可包括多种方式，一种方式为，PCC的优先级和SCC的优先级预先存储至基站，基站需要使用时，通过处理单元读取预先存储的PCC的优先级和SCC的优先级。另一种可替代的方式为，基站还包括获取单元3303，PCC的优先级和SCC的优先级存储于其它网络设备中，基站需要使用时，通过获取单元获取CA UE的PCC的优先级和SCC的优先级。
处理单元，还用于当SCC的优先级大于PCC的优先级时，通过收发单元向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。
可选地，优先级是根据载波的带宽和/或频段确定的。
可选地，还包括：RRC重配置消息还用于CA UE将PCC作为新的SCC。
可选地，RRC重配置消息包含至少两个SCC的信息；
收发单元，还用于：
向CA UE发送用于指示每个SCC的优先级的指示信息，以使CA UE对每个SCC进行测量，并在测量结果满足测量门限的SCC中将优先级最高的SCC作为新的PCC。可选的，指示每个SCC的优先级的指示信息包含在包含 至少两个SCC的RRC重配置消息中。
图3d示例性示出本发明实施例提供的一种用于载波聚合技术中的载波选择的CA UE的结构示意图。
基于相同构思，如图3d所示，本发明实施例提供一种用于在载波聚合技术中载波选择的CA UE，包括收发单元3401、处理单元3402：
收发单元，用于接收基站发送的RRC重配置消息，其中，RRC重配置消息是基站确定SCC的优先级大于PCC的优先级时发送的；
处理单元，用于将SCC作为新的PCC。
可选地，优先级是根据载波的带宽和/或频段确定的。
可选地，处理单元，还用于：将PCC作为新的SCC。
可选地，RRC重配置消息包含至少两个SCC的信息；
收发单元，还用于：
接收基站发送的用于指示每个SCC的优先级的指示信息；
处理单元，具体用于：
对每个SCC进行测量，并在测量结果满足测量门限的SCC中将优先级最高的SCC作为新的PCC。
可看出，获取CA UE的PCC的优先级和SCC的优先级，当SCC的优先级大于PCC的优先级时，通过收发单元向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。如此，通过在CA UE驻留过程中为该CA UE选择优先级高的成员载波作为PCC，提高了CA UE的性能。
图3e示例性示出本发明实施例提供的一种用于载波聚合技术中的载波选择的基站的结构示意图。
如图3e所示，本发明实施例提供一种用于在载波聚合技术中载波选择的基站，用于执行上述图2b所示的方法，包括收发单元3501、处理单元3502：
处理单元，用于当CA UE在第一载波与基站建立RRC连接，获取第一载波的优先级。具体包括多种方式，一种方式，第一载波的优先级预先存储至基站，基站需要使用时，通过处理单元读取预先存储的第一载波的优先级。 另一种可替代的方式为，基站还包括获取单元3503，第一载波的优先级存储于其它网络设备中，基站需要使用时，通过获取单元获取CA UE的第一载波的优先级。
处理单元，还用于若第一载波的优先级低于第二载波的优先级，则通过收发单元向CA UE下发RRC重配置消息，RRC重配置消息包含第二载波的信息，RRC重配置消息用于CA UE进行第二载波的测量，且当测量结果满足测量门限时，将第二载波作为CA UE的PCC，其中，第一载波和第二载波为能支持CA UE进行CA的载波。
可选地，优先级是根据载波的带宽和/或频段确定的。
可选地，处理单元，还用于：
在向CA UE下发RRC重配置消息之前，获取第二载波的优先级。
可选地，RRC重配置消息包含至少两个第二载波的信息；
收发单元，还用于：
向CA UE发送用于指示每个第二载波的优先级的指示信息，以使CA UE对每个第二载波进行测量，并在测量结果满足测量门限的第二载波中将优先级最高的第二载波作为新的PCC。
图3f示例性示出本发明实施例提供的一种用于载波聚合技术中的载波选择的CA UE的结构示意图。
基于相同构思，如图3f所示，本发明实施例提供一种用于在载波聚合技术中载波选择的CA UE，用于执行上述图2b所示的方法，包括收发单元3601、处理单元3602：
收发单元，用于接收基站下发RRC重配置消息；其中，RRC重配置消息是基站获取第一载波的优先级，在确定第一载波的优先级低于第二载波的优先级时发送的，RRC重配置消息包含第二载波的信息；
处理单元，用于在第一载波与基站建立RRC连接；进行第二载波的测量，且当测量结果满足测量门限时，将第二载波作为CA UE的PCC，其中，第一载波和第二载波为能支持CA UE进行CA的载波。
可选地，优先级是根据载波的带宽和/或频段确定的。
RRC重配置消息包含至少两个第二载波的信息；
收发单元，还用于：
接收基站发送的用于指示每个第二载波的优先级的指示信息；
处理单元，具体用于：
对每个第二载波进行测量，并在测量结果满足测量门限的第二载波中将优先级最高的第二载波作为新的PCC。
可看出，当CA UE选择第一载波驻留基站时，基站获取第一载波的优先级，若第一载波的优先级低于第二载波的优先级，则向CA UE下发RRC重配置消息，RRC重配置消息包含第二载波的信息，CA UE进行第二载波的测量，且当测量结果满足测量门限时，将第二载波作为CA UE的PCC，其中，第一载波和第二载波为能支持CA UE进行CA的载波。如此，通过在CA UE驻留过程中为该CA UE选择优先级高的成员载波作为PCC，提高了CA UE的性能。
图4a示例性示出本发明实施例提供的一种用于载波聚合技术中的载波选择的基站的结构示意图。
基于相同构思，如图4a所示，本发明实施例提供一种用于在载波聚合技术中载波选择的基站，包括收发器4101、处理器4102、存储器4103：
处理器，用于读取存储器中的程序，执行图1和/或图2a所示的方法。
图4b示例性示出本发明实施例提供的一种用于载波聚合技术中的载波选择的CA UE的结构示意图。
基于相同构思，如图4b所示，本发明实施例提供一种用于在载波聚合技术中载波选择的CA UE，包括收发器4201、处理器4202、存储器4203、用户接口4204：
处理器，用于读取存储器中的程序，执行图2a所示的方法。
图4c示例性示出本发明实施例提供的一种用于载波聚合技术中的载波选择的基站的结构示意图。
基于相同构思，如图4c所示，本发明实施例提供一种用于在载波聚合技术中载波选择的基站，包括包括收发器4301、处理器4302、存储器4303：
处理器，用于读取存储器中的程序，执行下列下列过程：
获取CA UE的PCC的优先级和SCC的优先级。具体可包括多种方式，一种方式为，PCC的优先级和SCC的优先级预先存储至基站，基站需要使用时，通过处理器读取预先存储的PCC的优先级和SCC的优先级。另一种可替代的方式为，基站还包括网络接口4304，PCC的优先级和SCC的优先级存储于其它网络设备中，基站需要使用时，通过网络接口获取CA UE的PCC的优先级和SCC的优先级；
当SCC的优先级大于PCC的优先级时，通过收发单元向CA UE发送RRC重配置消息，RRC重配置消息用于CA UE将SCC作为新的PCC。
可选地，优先级是根据载波的带宽和/或频段确定的。可选的，指示每个SCC的优先级的指示信息包含在包含至少两个SCC的RRC重配置消息中。
图4d示例性示出本发明实施例提供的一种用于载波聚合技术中的载波选择的CA UE的结构示意图。
基于相同构思，如图4d所示，本发明实施例提供一种用于在载波聚合技术中载波选择的CA UE，包括收发器4401、处理器4402、存储器4403、用户接口4404：
处理器，用于读取存储器中的程序，执行下列过程：
接收基站发送的RRC重配置消息，其中，RRC重配置消息是基站确定SCC的优先级大于PCC的优先级时发送的；
将SCC作为新的PCC。
图4e示例性示出本发明实施例提供的一种用于载波聚合技术中的载波选择的基站的结构示意图。
基于相同构思，如图4e所示，本发明实施例提供一种用于在载波聚合技术中载波选择的基站，包括包括收发器4501、处理器4502、存储器4503：
处理器，用于读取存储器中的程序，执行图2b所示的方法。
该方案中，处理器执行图2b所示的方法时，处理器4502用于当CA UE在第一载波与基站建立RRC连接，获取第一载波的优先级。此步骤具体包括多种方式，一种方式，第一载波的优先级预先存储至基站，基站需要使用时，通过处理器读取预先存储的第一载波的优先级。另一种可替代的方式为，基站还包括网络接口4504，第一载波的优先级存储于其它网络设备中，基站需要使用时，通过网络接口获取CA UE的第一载波的优先级。
图4f示例性示出本发明实施例提供的一种用于载波聚合技术中的载波选择的CA UE的结构示意图。
基于相同构思，如图4f所示，本发明实施例提供一种用于在载波聚合技术中载波选择的CA UE，包括收发器4601、处理器4602、存储器4603、用户接口4604：
处理器，用于读取存储器中的程序，执行图2b所示的方法。
本领域内的技术人员应明白，本发明的实施例可提供为方法、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包括有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的设备。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器 中的指令产生包括指令设备的制造品，该指令设备实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包括这些改动和变型在内。

Claims (15)

  1. 一种载波聚合技术中的载波选择方法，其特征在于，包括：
    基站获取载波聚合CA用户设备UE上报的无线信道信息，所述无线信道信息包括主载波PCC的无线信道信息和辅载波SCC的无线信道信息；
    当所述SCC的无线信道信息大于所述PCC的无线信道信息时，所述基站向所述CA UE发送无线资源控制RRC重配置消息，所述RRC重配置消息用于所述CA UE将所述SCC作为新的PCC。
  2. 如权利要求1所述的方法，其特征在于，所述SCC的无线信道信息大于所述PCC的无线信道信息，具体为：
    在第一时间段内，所述SCC的无线信道信息大于所述PCC的无线信道信息。
  3. 如权利要求1所述的方法，其特征在于，所述SCC的无线信道信息大于所述PCC的无线信道信息，具体为：
    在第二时间段内，所述SCC的无线信道信息减去所述PCC的无线信道信息所得到的值大于阈值。
  4. 如权利要求1至3任一权利要求所述的方法，其特征在于，所述无线信道信息为以下的任一项或其组合：
    信道质量指示CQI、参考信号接收功率RSRP、参考信号接收质量RSRQ。
  5. 如权利要求1至4任一权利要求所述的方法，其特征在于，还包括：所述RRC重配置消息还用于所述CA UE将所述PCC作为新的SCC。
  6. 一种用于载波聚合技术中的载波选择的基站，其特征在于，包括：
    收发单元，用于获取载波聚合CA用户设备UE上报的无线信道信息，所述无线信道信息包括主载波PCC的无线信道信息和辅载波SCC的无线信道信息；
    处理单元，用于当所述SCC的无线信道信息大于所述PCC的无线信道信息时，通过所述收发单元向所述CA UE发送无线资源控制RRC重配置消息， 所述RRC重配置消息用于所述CA UE将所述SCC作为新的PCC。
  7. 如权利要求6所述的基站，其特征在于，所述SCC的无线信道信息大于所述PCC的无线信道信息，具体为：
    在第一时间段内，所述SCC的无线信道信息大于所述PCC的无线信道信息。
  8. 如权利要求6所述的基站，其特征在于，所述SCC的无线信道信息大于所述PCC的无线信道信息，具体为：
    在第二时间段内，所述SCC的无线信道信息减去所述PCC的无线信道信息所得到的值大于阈值。
  9. 如权利要求6至8任一权利要求所述的基站，其特征在于，所述无线信道信息为以下的任一项或其组合：
    信道质量指示CQI、参考信号接收功率RSRP、参考信号接收质量RSRQ。
  10. 如权利要求6至9任一权利要求所述的基站，其特征在于，所述RRC重配置消息还用于所述CA UE将所述PCC作为新的SCC。
  11. 一种用于载波聚合技术中的载波选择的基站，其特征在于，包括：
    处理器，用于读取存储器中的程序，执行下列过程：
    通过收发器获取载波聚合CA用户设备UE上报的无线信道信息，所述无线信道信息包括主载波PCC的无线信道信息和辅载波SCC的无线信道信息；
    当所述SCC的无线信道信息大于所述PCC的无线信道信息时，通过所述收发器向所述CA UE发送无线资源控制RRC重配置消息，所述RRC重配置消息用于所述CA UE将所述SCC作为新的PCC。
  12. 如权利要求11所述的基站，其特征在于，所述SCC的无线信道信息大于所述PCC的无线信道信息，具体为：
    在第一时间段内，所述SCC的无线信道信息大于所述PCC的无线信道信息。
  13. 如权利要求11所述的基站，其特征在于，所述SCC的无线信道信息大于所述PCC的无线信道信息，具体为：
    在第二时间段内，所述SCC的无线信道信息减去所述PCC的无线信道信息所得到的值大于阈值。
  14. 如权利要求11至13任一权利要求所述的基站，其特征在于，所述无线信道信息为以下任一项或其组合：
    信道质量指示CQI、参考信号接收功率RSRP、参考信号接收质量RSRQ。
  15. 如权利要求11至14任一权利要求所述的基站，其特征在于，所述RRC重配置消息还用于所述CA UE将所述PCC作为新的SCC。
PCT/CN2015/091060 2015-09-29 2015-09-29 一种载波聚合技术中载波选择方法和设备 Ceased WO2017054128A1 (zh)

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