WO2012116625A1 - 一种采用载波汇聚方式传输数据的方法、系统及装置 - Google Patents

一种采用载波汇聚方式传输数据的方法、系统及装置 Download PDF

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Publication number
WO2012116625A1
WO2012116625A1 PCT/CN2012/071705 CN2012071705W WO2012116625A1 WO 2012116625 A1 WO2012116625 A1 WO 2012116625A1 CN 2012071705 W CN2012071705 W CN 2012071705W WO 2012116625 A1 WO2012116625 A1 WO 2012116625A1
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WIPO (PCT)
Prior art keywords
base station
eps bearer
group
data
access layer
Prior art date
Application number
PCT/CN2012/071705
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English (en)
French (fr)
Inventor
常俊仁
李亚娟
张永平
张亮亮
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP16206608.8A priority Critical patent/EP3229545B1/en
Priority to EP12752732.3A priority patent/EP2675228B1/en
Priority to EP20169262.1A priority patent/EP3764580B1/en
Publication of WO2012116625A1 publication Critical patent/WO2012116625A1/zh
Priority to US14/017,098 priority patent/US9219584B2/en
Priority to US14/951,269 priority patent/US9584274B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—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), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/104—Peer-to-peer [P2P] networks
    • H04L67/1044—Group management mechanisms 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • 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
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H04W36/00692—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO]

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, system, and apparatus for transmitting data by using a carrier aggregation (CA).
  • CA carrier aggregation
  • CA Long Term Evolution
  • the main idea of the CA mode is to aggregate multiple component carriers (CC, Component Carrier) into one carrier with a larger bandwidth to support high-speed data transmission.
  • Figure 1 shows the bandwidth structure used by the prior art to transmit data using CA technology.
  • the downlink channel bandwidth used for transmitting data is aggregated by five 20M carriers, including carrier 1, carrier 2, carrier 3, carrier 4, and carrier 5.
  • CAs can be divided into two types, one is intra-band CA (intra-band CA) and the other is inter-band CA.
  • intra-band CA since the aggregated multiple carriers are in the same frequency band, the coverage of the data transmission remains the same.
  • inter-band CA since the aggregated multiple carriers are in different frequency bands, when the frequency bands occupied by the frequency bands are relatively far apart, the coverage difference of the data transmission is relatively large.
  • the carrier coverage of the low frequency band is The range is large, and the carrier coverage of the high frequency band is relatively small.
  • FIG. 2 is a schematic diagram of different carrier coverage ranges in the prior art inter-band CA.
  • the blank area is covered by the 800 M hz carrier, and the padding area is covered by the 3Ghz carrier. It can be seen that The range covered by the 3Ghz carrier is smaller than the range covered by the 800Mhz carrier.
  • the UE can simultaneously transmit data using the high frequency carrier and the low frequency carrier in the inter-band CA.
  • the UE cannot use the high frequency carrier to transmit data, and the UE edge of the cell edge
  • the throughput of UE transmission data is much lower than that of the cell center.
  • a relay station (RN, relay node) or a small base station, such as a micro base station or a home base station Home eNB, may be used on the cell network side to expand the height.
  • the coverage of the frequency carrier as shown in the prior art of FIG. 3, expands the coverage structure of the high frequency carrier network structure, and increases the coverage of the high frequency carrier by the two RNs, thereby expanding the coverage of the high frequency carrier.
  • the UE at the cell edge wants to use the component carriers of the high frequency band and the low frequency band at the same time, the UE still needs to aggregate carriers from two different stations, that is, the carrier of the low frequency band comes from The macro base station (DeNB, Donor eNodeB), the carrier of the high frequency band comes from the RN or other small base station. This is referred to herein as inter-site CA.
  • the macro base station (DeNB, Donor eNodeB)
  • the carrier of the high frequency band comes from the RN or other small base station. This is referred to herein as inter-site CA.
  • the embodiment of the invention provides a method, a system and a device for transmitting data by using a CA method, so that the UE can receive data transmitted from different frequency bands of different base stations, and improve the throughput of the data transmitted by the UE.
  • a method for transmitting data by using a carrier aggregation CA method including:
  • the user equipment UE determines, when transmitting and receiving data, a component carrier group CC Group corresponding to an evolved packet system EPS bearer carrying the data, where the CC group is a CC set owned by a site that establishes the EPS bearer, or the site is a set of CCs established by the UE;
  • An apparatus for transmitting data by using a carrier aggregation CA method comprising: a scheduling unit and a processing unit, where the scheduling unit is configured to determine, when transmitting and receiving data, an evolved packet system that carries the data
  • the EPS bearer corresponds to a component carrier group CC Group, where the CC group is a CC set owned by a station that establishes the EPS bearer or a CC set established by the station as a UE, and according to the CC Group, at least two An access layer entity corresponding to the CC group is determined in the inbound entity; and the processing unit is configured to determine, in the at least two access layer entities, an access layer entity corresponding to the CC group to process the data.
  • the UE can determine the corresponding CC group according to different EPS bearers, thereby scheduling the processing data in the access layer entity corresponding to the CC group, so that the UE can receive the aggregated carrier transmission from different frequency bands belonging to different base stations.
  • the data is processed separately to improve the throughput of the UE's transmitted data.
  • an embodiment of the present invention further provides a method for transmitting data by using a carrier aggregation CA method, including:
  • the first base station establishes, by the user equipment UE, a first evolved packet system EPS bearer based on the first component carrier group CC Group, where the first CC group is a CC set owned by the first base station or the first base station is established for the UE CC collection;
  • the first base station instructs the second base station to establish a second EPS bearer based on the second CC group for the UE, where the second CC group is a CC set owned by the second base station or a CC set established by the second base station for the UE .
  • a system for transmitting data by using a carrier aggregation CA method where the system includes: a first base station to which the UE belongs, a UE, and a second base station to which the UE currently belongs, where
  • the first base station to which the UE belongs is used to establish a first evolved packet system EPS bearer based on the first component carrier group CC Group, where the first CC group is a CC set owned by the first base station or the first base station is a UE Establishing a CC set; instructing the second base station to establish a second EPS bearer based on the second CC group for the UE, where the second CC group is a CC set owned by the second base station or the second base station is established for the UE CC collection; the first EPS commitment established by itself Transfer data between the host and the UE;
  • the second base station that the UE currently belongs to is configured to establish a second EPS bearer for the UE under the indication of the first base station to which the UE belongs, and transmit data between the UE and the UE by using the second EPS bearer established by the UE;
  • a UE configured to determine, when transmitting and receiving data, a component carrier group CC Group corresponding to an evolved packet system EPS bearer carrying the data, and determining, in at least two access layer entities, an access layer entity corresponding to the CC group Processing the data to be sent and received.
  • An apparatus for transmitting data by using a carrier aggregation CA method comprising: an establishing unit, an indicating unit, and a transmitting unit, where
  • An establishing unit configured to establish a first evolved packet system EPS bearer based on the first component carrier group CC Group, where the first CC group is a CC set owned by the first base station or the CC set established by the first base station for the UE ;
  • the indication unit is configured to indicate that the second base station establishes a second EPS bearer based on the second CC group for the UE, where the second CC group is a CC set owned by the second base station or the second base station is established by the UE CC collection;
  • a transmitting unit configured to transmit data between the first EPS bearer established by itself and the UE.
  • Different base stations in the embodiments of the present invention respectively establish different EPS bearers based on different CC groups, and when interacting with the UE, the different EPS bearers are also established, so that the UE can identify corresponding corresponding bearers according to different EPS bearers.
  • the CC Group in order to perform classification processing, facilitates different base stations to transmit data to the same UE by using different frequency band carriers, thereby improving the throughput of the UE transmitting data.
  • FIG. 1 is a schematic diagram of a bandwidth structure used by a prior art to transmit data by using a CA technology
  • FIG. 2 is a schematic diagram of different carrier coverage ranges of a prior art inter-band CA
  • FIG. 3 is a schematic diagram of a network structure of a coverage area for expanding a high frequency carrier in the prior art
  • FIG. 4 is a flowchart of a method for transmitting data by using a CA method according to an embodiment of the present invention
  • FIG. 4B is a flowchart of a method for transmitting data by using a CA method according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a system for transmitting data by using a CA method according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a device structure for transmitting data by using a CA method according to an embodiment of the present invention
  • FIG. FIG. 7 is a schematic diagram of a specific embodiment of a system for transmitting data by using a CA method according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of a second embodiment of a system for transmitting data by using a CA method according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of a first embodiment of a method for establishing an EPS bearer for a UE by using a DeNB in a CA mode according to an embodiment of the present disclosure
  • FIG. 10 is a flowchart of a second embodiment of a method for establishing an EPS bearer for a UE by using a DeNB in a CA mode according to an embodiment of the present disclosure
  • FIG. 1 is a flowchart of a third embodiment of a method for establishing an EPS bearer for a UE in a CA mode according to an embodiment of the present invention
  • FIG. 12 is a flowchart of a fourth embodiment of a method for establishing an EPS bearer for a UE in a CA mode according to an embodiment of the present invention
  • FIG. 13 is a flowchart of a fifth embodiment of a method for establishing an EPS bearer for a UE in a CA mode according to an embodiment of the present invention
  • FIG. 14 is a flowchart of a sixth embodiment of a method for establishing an EPS bearer for a UE in a CA mode according to an embodiment of the present invention
  • FIG. 15 is a flowchart of a seventh embodiment of a method for establishing an EPS bearer for a UE in a CA mode according to an embodiment of the present invention
  • FIG. 16 is a flowchart of Embodiment 8 of a method for establishing an EPS bearer by a DeNB currently belonging to a UE in a CA mode according to an embodiment of the present invention. detailed description
  • How the UE implements the aggregation of data transmitted from different carriers of the DeNB and the RN, and the key to improving the throughput of the UE to transmit data is how the UE performs reception and aggregation for data from different sites, and how to transmit data for different sites. Therefore, when the UE sends and receives data, the corresponding component carrier group (CC Group) is determined according to the EPS bearer carrying the data, and the access layer entity corresponding to the CC group is determined in at least two access layer entities, and the processing is performed.
  • the corresponding component carrier group CC Group
  • the access layer entity corresponding to the CC group is determined in at least two access layer entities, and the processing is performed.
  • the access layer entity of the CC group processes the data
  • the CC group is a set of one or more CCs belonging to the same site, or the CC set established by the site for the UE, and the UE sets the CC group differently according to the CC group.
  • the access layer entity processes the data. In this way, the UE can receive and aggregate data transmitted from different frequency band carriers belonging to different base stations, and separately process, and improve the throughput of the UE transmission data.
  • the EPS bearer identifies the corresponding CC Group and processes them separately, so that the UE receives the data transmitted from the different frequency band carriers belonging to different base stations, and improves the throughput of the UE transmission data.
  • the station is the first base station to which the UE currently belongs or the second base station to which the UE currently belongs, and the processing data is performing MAC demultiplexing or multiplexing.
  • the Radio Link Control (RLC) layer can be cascaded, segmented, or reassembled when processing data. When processing data, it is also possible to cascade, segment or reorganize only the RLC layer.
  • the first base station to which the UE belongs may be the DeNB to which the UE belongs
  • the second base station to which the UE belongs may be the RN to which the UE belongs.
  • the RN in the embodiment of the present invention is replaced by a micro eNB and a home eNB.
  • the current EPS bearer of the UE is split into different EPS bearers, and different data is transmitted for the UE on the DeNB and the micro eNB respectively.
  • the above RN, Pico eNB and Home eNB may be collectively referred to as a small base station.
  • the DeNB currently belonging to the UE and the RN currently belonging to the UE are taken as an example. Line description.
  • the mapping between the CC group and the EPS bearer may be: the station that establishes the EPS bearer with the UE sets the identifier of the EPS layer in the access layer, such as the logical channel, for the EPS bearer of the different CC group.
  • the identifier or the data radio bearer (DRB) identifier is set, and the UE sets the correspondence between the EPS bearer identifier and the CC group identifier to which the EPS bearer belongs.
  • DRB data radio bearer
  • the data packet header of the UE transmitting data carries the identifier of the EPS bearer in the access layer, and the access layer entity of the UE, such as the media access control (MAC, Media Access Control), identifies the EPS bearer carried in the data packet header of the data.
  • the access layer entity of the UE such as the media access control (MAC, Media Access Control)
  • MAC Media Access Control
  • the identifier of the access layer is determined, the corresponding CC group identifier is determined, and the execution access layer entity corresponding to the CC group having the CC group identifier is further confirmed, and the data MAC is demultiplexed or multiplexed by the corresponding access layer entity. And the cascading, segmentation or reorganization of the RLC layer.
  • CCs from different sites are divided into different CC groups, that is, different CC groups correspond to different sites, and in the following description, CC Group descriptions are used, and names such as sites are no longer used.
  • the station may be the DRN currently belonging to the UE or the RN currently belonging to the UE.
  • FIG. 4 is a flowchart of a method for transmitting data by using a CA method according to an embodiment of the present invention, where specific steps are as follows:
  • Step 4000 The UE determines, when transmitting and receiving data, a CC group corresponding to an EPS bearer carrying the data, where the CC group is a CC set owned by a station that establishes the EPS bearer, or a CC set established by the station as a UE ;
  • the UE is configured with a correspondence between the CC Group and the EPS bearer. If the UE sets the correspondence between the CC Group identifier and the identifier of the EPS bearer in the access layer, the identifier of the EPS bearer at the access layer. It is uniformly allocated by the DeNB to which the UE belongs, and is sent to the UE in the process of establishing an EPS bearer with the UE, or may be used by the DeNB currently belonging to the UE and the RN to which the UE belongs, and respectively delivered to the UE, or respectively respectively. And setting an identity group of the EPS bearer in the access layer for the DeNB to which the UE belongs and the RN to which the UE is currently located. The DeNB currently belonging to the UE and the current RN of the UE are selected from the corresponding EPS bearer in the identifier group of the access layer, and then sent to the identifier group of the access layer.
  • UE
  • Step 4001 The UE determines, according to the CC group, at least two access layer entities. An access layer entity corresponding to the CC Group;
  • Step 4002 The UE processes the data in an access layer entity corresponding to the CC group.
  • the data is processed to perform MAC demultiplexing or multiplexing on the data, or/and perform a level of the RLC layer. Connect, segment or reorganize.
  • the UE in the foregoing embodiment can determine the corresponding CC group according to different EPS bearers, so as to process data in the access layer entity corresponding to the CC group, so that the UE can receive data from different frequency band carriers transmitted by different base stations. And separately perform scheduling and processing to improve the throughput of the UE to transmit data.
  • At least one CC may be included in the CC group.
  • the serving station of the UE can use the CC in the CC group to send and receive data to the UE through the corresponding EPS bearer.
  • FIG. 4b is a flowchart of a method for transmitting data by using a CA method according to an embodiment of the present invention, where specific steps are as follows:
  • Step 4100 The first base station establishes, by the UE, a first EPS bearer based on the first CC group, where the first CC group is a CC set owned by the first base station, or the CC set established by the first base station is a UE;
  • Step 4100 is performed under the control of a core network entity
  • Step 4101 The first base station instructs the second base station to establish a second EPS bearer based on the second CC group for the UE, where the second CC group is a CC set owned by the second base station, or the second base station is established for the UE. CC collection.
  • the first base station is the DeNB to which the UE belongs
  • the second base station is the current RN of the UE.
  • the DeNB currently belonging to the UE may determine, according to the obtained load status of the DeNB to which the UE belongs and the current RN of the UE, and the signal quality of the UE under the DeNB and/or the RN to the UE currently belonging to the DeNB to which the UE belongs.
  • the UE establishes more than one EPS payload, and determines whether the established one or more EPS bearers are established on the DeNB or the RN.
  • the DeNB currently belonging to the UE may also receive an EPS bearer request sent by the core network entity for the UE, and establish an EPS bearer under different CC Groups for the UE.
  • the DeNB currently belonging to the UE may receive the offload EPS bearer request sent by the RN currently sent by the UE.
  • the DeNB currently belonging to the UE may establish an EPS bearer in a different CC group for the UE, if the RN that the UE currently belongs to is instructed to establish an EPS bearer, but the RN of the UE currently belongs to the RN, the UE may belong to the UE. Establish an EPS bearer that fails to establish a part or all of the RNs to which the UE belongs.
  • the UE when the UE currently belongs to the DeNB, the UE is established under different CC Groups.
  • the low-priority EPS bearer that is removed due to the RN that the UE currently belongs to the UE to establish a high-priority EPS bearer may be used according to the indication of the core network entity or the information that the UE currently belongs to.
  • the removed low priority EPS bearer is established on the DeNB to which the UE currently belongs.
  • the removed low-priority other 'J EPS' may be established on the RN to which the UE belongs.
  • the data of the unsuccessful transmission on the low priority EPS bearer is sent to the DeNB (or the RN to which the UE currently belongs) to which the UE currently belongs.
  • Different base stations in the embodiments of the present invention respectively establish different EPS bearers based on different CC Groups to the UE, and when performing data interaction with the UE, the different EPS bearers are also established, so that the UE can make the UE according to different EPSs.
  • the bearer identifies the corresponding CC Group for classification processing, which facilitates different base stations to use different frequency band carriers to transmit data to the same UE, thereby improving the throughput of the UE transmitting data.
  • the low-priority EPS bearer can be established by another base station, so that the establishment of the EPS bearer is more flexible, so that Different sites serve the UE through carrier aggregation to improve service quality.
  • the low-priority EPS bearer of a site refers to a bearer with a lower priority of the EPS bearer that needs to be established with respect to the site. This priority may be related to service requirements, such as bearers associated with important or urgent services, which generally have higher priority.
  • FIG. 5 is a schematic structural diagram of a system for transmitting data by using a CA mode according to an embodiment of the present invention, including: a first base station to which a UE belongs, a UE, and a second base station to which a UE currently belongs, where
  • the first base station to which the UE belongs is used to establish a first evolved packet system EPS bearer based on the first component carrier group CC Group, where the first CC group is a CC set owned by the first base station or the first base station is a UE Establishing a CC set; instructing the second base station to establish a basis for the UE a second EPS bearer of the second CC group, where the second CC group is a CC set owned by the second base station or a CC set established by the second base station for the UE; and the first EPS bearer established by itself and the UE transfer data;
  • the second base station that the UE currently belongs to is configured to establish a second EPS bearer for the UE under the indication of the first base station to which the UE belongs, and transmit data between the UE and the UE by using the second EPS bearer established by the UE;
  • a UE configured to determine, when transmitting and receiving data, a component carrier group CC Group corresponding to an evolved packet system EPS bearer carrying the data, and determining, in at least two access layer entities, an access layer entity corresponding to the CC group Processing the data to be sent and received.
  • the first base station that the UE currently belongs to is also used to perform the establishment of the first EPS bearer and indicate for the UE under the control of the core network entity or under the offload request of the second base station to which the UE belongs.
  • the second base station establishes the second EPS bearer.
  • the first base station to which the UE currently belongs is also used to establish or partially establish a low priority EPS bearer that is to be removed by the second base station to be used by the UE to establish a second EPS bearer for the UE.
  • the low priority level EPS bearer is also used to establish or partially establish a low priority EPS bearer that is to be removed by the second base station to be used by the UE to establish a second EPS bearer for the UE.
  • FIG. 6 is a schematic diagram of a device structure for transmitting data by using a CA method according to an embodiment of the present disclosure, where the device is a DeNB, an establishing unit, an indicating unit, and a transmitting unit, where
  • An establishing unit configured to establish a first evolved packet system EPS bearer based on the first component carrier group CC Group, where the first CC group is a CC set owned by the first base station or the CC set established by the first base station for the UE ;
  • An indicating unit configured to instruct the second base station to establish a second CC Group-based second for the UE
  • the EPS bearer, the second CC Group is a CC set owned by the second base station, or the CC set established by the second base station for the UE;
  • the method further includes a receiving unit and a control unit, where
  • a receiving unit configured to receive a control command sent by the core network entity or a shunt request sent by the second base station that the UE belongs to, and send the information to the control unit,
  • control unit configured to control the establishing unit and the indicating unit, perform the first EPS bearer and indicate the establishment of the second EPS bearer.
  • the establishing unit further includes a sub-establishing unit, where the UE currently belongs to The low priority priority EPS bearer is established or partially established when the second base station is to remove the low priority EPS bearer that is removed by the UE for the second EPS bearer.
  • FIG. 6b is a schematic diagram of a second structure of a device for transmitting data by using a CA mode according to an embodiment of the present invention.
  • the device is a UE, and includes: a scheduling unit and a processing unit.
  • a scheduling unit configured to determine, when transmitting and receiving data, a component carrier group CC Group corresponding to an EPS packet carrying an evolved packet system that carries the data, where the CC group is a CC set owned by a site that establishes the EPS bearer or The station is a CC set established by the UE, and according to the CC Group, determining an access layer entity corresponding to the CC group in at least two access layer entities;
  • a processing unit configured to determine, in the at least two access layer entities, the access layer entity corresponding to the CC group to process the data.
  • the processing unit is further configured to: perform demultiplexing or multiplexing of the data in a media access control MAC layer corresponding to the CC group; and/or correspond to the CC group
  • the radio link control RLC layer performs the concatenation, segmentation or reassembly of the data.
  • FIG. 7 is a schematic diagram of a specific embodiment of a system for transmitting data by using a CA method according to an embodiment of the present invention, which includes a DeNB currently belonging to a UE, and has a CC Group of CC Group1, that is, CC1 and CC2 form a CC Gmupl, and the UE currently belongs to RN, which has a CC Group of CC Group 2, that is, CC3 and CC4 constitute CC Group 2, and the UE includes an access layer entity and a high layer entity, wherein the access layer entity includes a physical layer (PHY) and media access control in sequence. (MAC), RLC, and Packet Data Convergence Protocol (PDCP).
  • PHY physical layer
  • PDCP Packet Data Convergence Protocol
  • the UE sets CC Group1 corresponding to CC1 and CC2, sets CC Group2 to correspond to CC3 and CC4, sets CC Group1 corresponding access layer entities to PHY1, MAC1, RLC1, and PDCP1, and sets CC Group2 corresponding access layer entities to PHY2, MAC2, and RLC2. And PDCP2.
  • PDCP1 and PDCP2 may be combined into one PDCP entity in the UE. In this way, when the UE transmits and receives data, the corresponding CC group is determined according to the EPS bearer carrying the data, and the access layer entity of the CC Group performs the data concatenation, segmentation or/and reassembly, and further demultiplexing.
  • processing data that is, MAC demultiplexing or multiplexing of data, and concatenation, segmentation, or reassembly of the RLC layer.
  • processing data that is, MAC demultiplexing or multiplexing of data, and concatenation, segmentation, or reassembly of the RLC layer.
  • the data is transmitted through CC1 or CC2, corresponding to CC Group1, the data is performed by the execution access layer entity MAC1 of the CC Group1 or Demultiplexing, RLC1 performs concatenation, segmentation or/and reassembly of the data.
  • the data is transmitted through CC3 or CC4, corresponding to CC Group2, the data is multiplexed or demultiplexed by the execution access layer entity MAC2 of the CC Group2, and RLC2 performs concatenation, segmentation or/and reorganization of the data. Wait.
  • FIG. 8 is a schematic diagram of a second embodiment of a system for transmitting data by using a CA method according to an embodiment of the present invention, which includes a DeNB to which a UE currently belongs, having a CC Group of CC Group1, and two EPS bearers of the UE carrying EPS bearers 1 and EPS.
  • the bearer 2 is established in CC1 Group 1 and assigns a logical channel identifier 1 and a logical channel identifier 2 to the two EPS bearers, respectively. That is, for the UE, it can determine, by the network, the logical channel identifier assigned to its EPS bearer to determine which CC Group.
  • the UE currently belongs to the RN, which has the CC Group as CC Group2, that is, CC3 and The CC4 constitutes a CC Group2.
  • the UE establishes an EPS bearer in the CC Group 2, and the EPS bearer allocates a logical channel identifier 3.
  • the UE includes an access layer entity and a high layer entity, where the access layer entity includes a PHY, a MAC, in turn. RLC and PDCP.
  • the UE sets the logical channel identifier 1 and the logical channel identifier 2 to correspond to the CC Group1, sets the logical channel identifier 3 to correspond to the CC Group2, sets the CC Group1 corresponding access layer entity to the PHY1, MAC1, and RLC, and sets the CC Group2 corresponding access layer entity to PHY2 and MAC2 and RLC.
  • the UE transmits and receives data, according to the logical channel identifier carried in the data packet header of the data, the CC group to which the EPS bearer carrying the data belongs can be determined, and the access layer entity corresponding to the CC group executes the MAC of the data.
  • Demultiplexing or multiplexing, as well as cascading, segmentation or/and reassembly of the RLC layer That is, if the data packet header of the data carries the logical channel identifier 1 or the logical channel identifier 2, the corresponding group CC Group1, the access layer entities PHY1 and MAC1 corresponding to the CC Group1 multiplex or demultiplex the data, The access layer entity RLC corresponding to the CC Group1 performs concatenation, segmentation or/and reassembly, etc., if the data packet header carries the logical channel identifier 3, the corresponding CC Group2, and the access layer entity corresponding to the CC Group2 PHY2 and MAC2 multiplex or demultiplex the data, and the access layer entity RLC corresponding to the CC Group2 performs concatenation, segmentation or/and reassembly, and the like.
  • the access layer entities corresponding to CC1 Group1 are described as PHY1, MAC1, RLC1, and PDCP1.
  • the access layer entities corresponding to CC2 Group2 are described as PHY2, MAC2, RLC2, and PDCP2.
  • the UE performs packet processing on the data in the access layer entity of the UE according to the CC group corresponding to the EPS bearer carrying the data packet, that is, performs packet MAC multiplexing/demultiplexing of data based on the CC group.
  • FIG. 9 is a flowchart of a first embodiment of a method for establishing an EPS bearer by using a DeNB that is currently a UE in a CA mode, where the method includes:
  • Step 901 The current DeNB receives the signal quality information of the UE transmission data.
  • the signal quality information is detected and reported by the UE (shown as being sent by the UE in the figure), or the RN detects and reports, specifically Include signal quality information of each cell controlled by the RN, or signal quality information of the serving cell selected by the UE under the RN;
  • the signal quality information may also be an overall average signal quality information of the UE under all the cells that the UE belongs to, or an overall average signal of the serving cell selected by the UE in all cells that the current RN is responsible for. Quality information;
  • Step 902 The current RN that the UE currently belongs to sends the current load status information of the RN to which the UE belongs to the DeNB to which the UE belongs.
  • Step 903 The Mobility Management Network (MME) sends a request for establishing an EPS bearer for the UE to the DeNB currently belonging to the UE.
  • MME Mobility Management Network
  • a serving gateway S-GW
  • PDN-GW Public Data Network
  • S-GW serving gateway
  • PDN-GW Public Data Network
  • Step 904 After receiving the request, the DeNB currently belonging to the UE determines to establish an EPS bearer for the UE according to one or more of the load, the load information of the RN to which the UE belongs, and the signal quality information reported by the UE, and the established EPS.
  • the DeNB determines that the EPS bearer is to be established on the RN to which the UE currently belongs;
  • Step 905 The DeNB currently belonging to the UE sends an EPS bearer setup request to the RN to which the UE belongs.
  • Step 906 After receiving the request, the RN currently associated with the UE negotiates with the UE to establish an EPS bearer through an RRC connection reconfiguration process.
  • Step 907 The RN that the UE currently belongs to determines that the EPS bearer is successfully established or failed, and if successful, feeds back the EPS bearer setup success message to the DeNB currently belonging to the UE, and otherwise, feeds back the EPS bearer setup failure message to the DeNB currently belonging to the UE;
  • Step 908 The DeNB currently belongs to the UE receives the EPS bearer setup message fed back by the RN to which the UE belongs. If the message is an EPS bearer setup success message, the device directly sends an EPS bearer response to the MME. If the message is an EPS bearer setup failure message, Then, the DeNB that the UE currently belongs to decides whether to accept or partially accept the EPS bearer that fails to be established on the RN to which the UE belongs. If not, the EPS bearer fails to respond to the MME, and if all can be accepted, the UE reconnects through the RRC connection. After the EPS bearer is established, the EPS bearer response is sent to the MME.
  • the UE If the EPS bearer is partially accepted, the UE establishes an EPS bearer response by using the RRC connection reconfiguration process, and then sends an EPS bearer response to the MME, and carries the part of the EPS bearer information that is successfully established. And/or part of the EPS bearer information that is not established.
  • Specific embodiment 2
  • FIG. 10 is a flowchart of a second embodiment of a method for establishing an EPS bearer by a DeNB currently used by a UE in a CA mode according to an embodiment of the present disclosure, where the method includes:
  • Step 1001 The MME sends an EPS bearer setup request to the RN to which the UE belongs to the eNB, and the request includes a Pre-emption indication, where the MME indicates that the access network entity may lower the priority if the transmission data resource is limited.
  • the EPS bearer is removed, and the currently requested EPS bearer is established;
  • the other core network entity such as the S-GW, or the PDN-GW sends a request for establishing an EPS bearer for the UE to the DeNB currently belonging to the UE;
  • Step 1002 After receiving the request, the RN currently associated with the UE negotiates the EPS bearer with the UE through the RRC connection reconfiguration process. In the process, the EPS bearer is established for the UE, and the EPS bearer of the low priority is removed.
  • Step 1003 The RN currently belonging to the UE feeds back the EPS bearer setup success message to the DeNB currently belonging to the UE, and carries the information of the removed low priority EPS bearer.
  • Step 1004 The DeNB currently belonging to the UE determines whether the low-priority EPS bearer that can be removed is accepted, and if yes, establishes the low-priority EPS bearer in the DeNB to which the UE currently belongs. And the MME sends an EPS bearer setup success message to the MME. If not, the MME forwards the EPS bearer setup success message, which includes the information of the removed low priority EPS bearer, and the UE currently belongs to the DeNB and the UE through the RRC.
  • the connection reconfiguration process establishes the low priority EPS bearer or part of the low priority EPS bearer;
  • the DeNB that the UE currently belongs to establishes a low-priority EPS bearer that is partially removed by the RN, and then feeds back to the MME.
  • the EPS bearer setup response carries the low priority EPS bearer information that cannot be established and is removed by the RN;
  • Step 1005 The UE currently belongs to the DeNB
  • the low-priority EPS bearer or part of the low-priority EPS bearer information that the UE currently belongs to the RN is notified to;
  • Step 1006 After receiving the notification, the RN currently belonging to the UE forwards the data of the low-priority EPS bearer or the part of the low-priority EPS bearer that is not completed in the RN to the DeNB to which the UE belongs.
  • the data that has not been transmitted includes the sum that is not correctly received by the UE. No transmission to the UE; if the UM mode is adopted, it should be in the non-acknowledge mode, and the data that has not been transmitted and received includes not sent to the UE.
  • the EPS bearer of the low priority level of the RN to which the UE currently belongs is collectively controlled by the DeNB currently belonging to the UE.
  • FIG. 1 is a flowchart of a third embodiment of a method for establishing an EPS bearer by a DeNB currently used by a UE in a CA mode according to an embodiment of the present disclosure, where the method includes:
  • Step 1 101 The MME sends an EPS bearer setup request to the RN to which the UE belongs, by using the DeNB to which the UE belongs.
  • the request includes a Pre-emption indication, where the MME indicates that the access network entity may lower the priority when the transmission data resource is limited.
  • Level EPS bearer removal establishing the EPS of the current request;
  • Step 1 102 The RN currently belonging to the UE determines that the EPS bearer of the low priority level needs to be deleted, and feeds back the EPS bearer setup response to the DeNB currently belonging to the UE, and carries the EPS Pre-emption indication, indicating that the EPS bearer of the low priority level is deleted.
  • the ground selection may carry the identifier of the access layer to be deleted by the EPS;
  • Step 1 103 The DeNB that the UE currently belongs to detects whether the low-priority EPS bearer to be deleted by the RN to which the UE belongs is to be accepted or partially accepted, or the EPS bearer established by the MME is established.
  • Step 1104 If the DeNB currently belongs to the UE can establish an EPS bearer that is required to be established by the MME, send an EPS bearer hold request message to the RN to which the UE belongs, indicating that the RN currently belonging to the UE does not perform the EPS bearer setup request sent by the previous DeNB (not shown in the figure). If the low-priority EPS bearer to be deleted by the RN to which the UE belongs is to be received, the EPS bearer setup request message is sent to the RN to which the UE belongs, indicating that the EPS bearer is established for the UE, and the message is also carried by the DeNB currently belonging to the UE.
  • the low-priority EPS carries the identity of the access layer.
  • the DeNB currently belongs to the UE can establish the EPS bearer that the MME requires to establish, the DeNB and the UE currently belonging to the UE establish an EPS bearer for the UE through the RRC connection reconfiguration process (not shown in the figure). Reflect);
  • Step 1105 If the DeNB currently belongs to the UE accepts the low-priority EPS bearer to be deleted by the RN currently belonging to the UE, the DeNB and the UE currently belonging to the UE establish the accepted low to be deleted by the RN currently belonging to the UE through the RRC connection reconfiguration process.
  • the EPS bearer of the priority level, the RN and the UE to which the UE is currently located establish an EPS bearer for the UE through the RRC connection reconfiguration process, and remove the low priority EPS bearer to be deleted by the RN currently owned by the DeNB to which the UE belongs.
  • the UE needs to update the mapping relationship between the low priority bearer and the CC Group or the established node.
  • Step 1106 The DeNB currently belonging to the UE sends an EPS bearer setup success response to the MME.
  • Step 1107 The RN currently belonging to the UE forwards the data that is not successfully received and received in the RN corresponding to the low priority EPS bearer that the UE currently belongs to. ;
  • the uncompleted transmission data includes not being correctly received by the UE and not sent to the UE; If the UM mode is adopted, the transmission data that is not completed includes no transmission to the UE.
  • the RN that the UE currently belongs to requests the UE to belong to the DeNB to offload the EPS bearer that has been established by the UE, and the current DeNB requesting the UE to belong to the RN to split the established EPS bearer process is similar.
  • FIG. 12 is a flowchart of a fourth embodiment of a method for establishing an EPS bearer by a DeNB currently used by a UE in a CA mode according to an embodiment of the present invention, where the method includes:
  • Step 1201 The RN currently belonging to the UE sends an EPS bearer offloading request to the DeNB to which the UE belongs, and the request carries the identifier of the offloaded EPS bearer in the core network, or the number of EPS bearers that request the offloading, or the data throughput including the requested splitting. the amount;
  • Step 1202 The DeNB currently belonging to the UE sends an EPS offload response to the RN to which the UE belongs, and carries the received identifier of the offloaded EPS bearer in the core network.
  • Step 1203 The RN and the UE that the UE currently belongs to negotiate the modification of the EPS bearer through the RRC connection reconfiguration process: correspondingly, the UE needs to update the mapping relationship between the offloaded EPS bearer and the CC Group or the established node. For the EPS bearer that is offloaded by the DeNB to which the UE belongs, forward the corresponding data that is not completed in the RN to the DeNB currently belonging to the UE;
  • no transmission data includes that the UE does not acknowledge the correct reception and is not sent to the UE; if the UM mode is adopted, no transmission data includes no transmission to the UE;
  • Step 1204 The DeNB and the UE that the UE currently belongs to negotiate the modification of the EPS bearer by using the RRC connection reconfiguration process, and the EPS bearer that is offloaded from the RN to which the UE belongs is established in the DeNB to which the UE belongs.
  • the UE needs to update the mapping relationship between the offloaded EPS bearer and the CC Group or the establishing node.
  • the RN that the UE currently belongs to requests the UE to belong to the DeNB to be offloaded.
  • the EPS bearer is similar to the process in which the DeNB currently belonging to the UE requests the RN to which the UE belongs to the offload EPS bearer.
  • the core network entity controls the DeNB to which the UE currently belongs to establish an EPS bearer for the UE on the DeNB to which the UE belongs and the RN to which the UE currently belongs.
  • FIG. 13 is a flowchart of a fifth embodiment of a method for establishing an EPS bearer by a DeNB currently used by a UE in a CA mode according to an embodiment of the present invention, where the method includes:
  • Step 1301 The MME receives a notification that the UE has established a synchronous connection with the current RN and the current DeNB.
  • the notification may be sent by the RN to which the UE belongs;
  • Step 1302 The MME receives the signal quality information of the UE transmission data, and includes signal quality information and load information of the RN transmission data currently belonging to the UE, And signal quality information and load information of the data transmitted by the DeNB currently belonging to the UE;
  • the signal quality information of the RN transmission data that the UE currently belongs to is specifically: an overall average signal quality information of all the cells that the UE is responsible for at the current RN, or an overall of the serving cells selected by the UE in all cells that the RN is currently responsible for. Average signal quality information;
  • the signal quality information may also be the average total signal quality information of the EPS bearer transmission data established by the UE to which the UE belongs to the UE, or the EPS of the current RN selected by the UE to be established by the UE in the serving cell. Average signal quality information;
  • the signal quality information and the load information of the data transmitted by the DeNB currently belonging to the UE are similar to the foregoing process, and are not described herein again;
  • Step 1303 The MME determines to establish an EPS bearer for the UE according to the received information, and determines that the UE to which the EPS bearer established by the UE is currently located belongs to the DeNB or/and the RN to which the UE belongs. In this step, it is assumed that the MME determines that the UE will be established for the UE.
  • the EPS bearer is established on the RN to which the UE currently belongs;
  • Step 1304 The MME sends an EPS 7 bearer setup request to the RN to which the UE currently belongs by the DeNB to which the UE currently belongs.
  • Step 1305 After receiving the request, the RN currently associated with the UE negotiates the EPS bearer establishment with the UE through the RRC connection reconfiguration process, and the establishment is successful.
  • the step 1306, the RN EPS establishment success response that the UE currently belongs to is sent to the DeNB, and the DeNB forwards the message to the MME.
  • the DeNB uniformly controls the allocation of data radio bearer (DRB) identifiers and/or logical channel identifiers corresponding to the EPS bearers.
  • DRB data radio bearer
  • FIG. 14 is a flowchart of Embodiment 6 of a method for establishing an EPS bearer by a DeNB currently used by a UE in a CA mode according to an embodiment of the present disclosure, where the method includes:
  • Step 1401 The DeNB that the UE currently belongs receives the EPS bearer setup request from the MME, determines to establish an EPS bearer for the UE on the RN to which the UE belongs, and allocates a DRB identifier and/or a logical channel identifier for the EPS bearer to be established.
  • Step 1402 The DeNB currently belonging to the UE sends an EPS bearer setup request to the RN to which the UE belongs, and includes a DRB identifier and/or a logical channel identifier allocated for the EPS bearer to be established.
  • Step 1403 The RN and the UE that the UE currently belongs to establish an EPS bearer for the UE by using an RRC connection reconfiguration process.
  • the UE sets the CC Group identifier of the EPS bearer and the DRB identifier and/or the logical channel identifier of the EPS bearer.
  • Corresponding relationship, and access layer entities corresponding to different CC Group settings perform multiplexing or demultiplexing of data packets, as well as concatenation, segmentation or/and reorganization;
  • Step 1404 The RN that the UE currently belongs to sends an EPS bearer setup success response to the DeNB to which the UE belongs.
  • Step 1405 The DeNB currently belonging to the UE sends an EPS bearer setup success response to the MME.
  • the DeNB currently belonging to the UE notifies the RN to which the UE belongs to each other the DRB identifier and the logical channel identifier that are used by the UE, that is, distributed management.
  • FIG. 15 is a flowchart of a seventh embodiment of a method for establishing an EPS bearer by a DeNB currently used by a UE in a CA mode according to an embodiment of the present invention, where the method includes:
  • Step 1501 The DeNB that the UE currently belongs receives the EPS bearer setup request from the MME, determines to establish an EPS bearer for the UE on the RN to which the UE belongs, and notifies the UE of the DRB identifier and/or the logical channel identifier that the RN currently belongs to.
  • Step 1502 The DeNB currently belonging to the UE sends an EPS bearer setup request to the RN to which the UE belongs, including the DRB identifier and/or the logical channel identifier that has been used by the UE.
  • Step 1503 The RN and the UE currently belonging to the UE are connected to the UE through an RRC connection reconfiguration process, and are UEs.
  • Establishing an EPS bearer in which the UE sets a correspondence between a CC Group identifier of the EPS bearer and a DRB identifier and/or a logical channel identifier of the EPS bearer, and an access layer entity multiplexing or solution corresponding to the CC Group setting Reuse data, and perform cascading, segmentation or reorganization of data packets;
  • the RN When the RN allocates the DRB identifier and/or the logical channel identifier, the RN does not use the DRB identifier and/or the logical channel identifier that the UE currently belongs to the DeNB.
  • Step 1504 The RN currently belonging to the UE sends an EPS bearer setup success response to the DeNB currently belonging to the UE, and carries the DRB identifier and/or the logical channel identifier used by the EPS bearer allocated by the UE.
  • Step 1505 After receiving the EPS bearer setup success response, the DeNB currently belonging to the UE updates the stored DRB identifier and/or the logical channel identifier.
  • the UE currently belongs to the DeNB and the RN semi-statically divided DRB identifier and/or the logical channel identifier that the UE currently belongs to, and all the DRB identifiers and/or logical channel identifiers are grouped, and the DeNB and the UE to which the UE currently belongs belong.
  • the RN uses one of the groups, and the following is an example in which the RN currently belonging to the UE requests the DeNB currently belonging to the UE as an example, and vice versa.
  • FIG. 16 is a flowchart of Embodiment 8 of a method for establishing an EPS bearer by a DeNB currently used by a UE in a CA mode according to an embodiment of the present invention, where the method includes:
  • Step 1601 The RN currently belonging to the UE sends a DRB identifier and/or a logical channel identifier grouping request message for the UE to establish an EPS bearer to the DeNB to which the UE belongs.
  • the request message may further carry a DRB identifier and/or a logical channel identifier that the RN that the UE currently belongs to is recommended to use by the RN.
  • Step 1602 The DeNB that the UE currently belongs to feeds back a packet indication message to the RN to which the UE belongs, and carries a DRB identifier and/or a logical channel identifier respectively used when the DeNB currently belonging to the UE and the RN to which the UE belongs are used to establish an EPS bearer for the UE.
  • Step 1603 The DeNB currently belonging to the UE receives the EPS bearer setup request sent by the MME.
  • Step 1604 The DeNB currently belonging to the UE determines to establish an EPS bearer for the UE on the RN to which the UE belongs.
  • Step 1605 The DeNB currently belonging to the UE sends an EPS bearer setup request to the RN to which the UE belongs.
  • Step 1606 The RN that the UE currently belongs to selects a set of available DRB identifiers and/or logical channel identifiers from the DRB identifier and/or the logical channel identifier allocated for establishing the EPS bearer for the UE, and the RRC connection reconfiguration process is performed by the UE.
  • the UE establishes an EPS bearer, and in the process, the UE sets a correspondence between the CC Group identifier of the EPS bearer and the DRB identifier and/or the logical channel identifier of the EPS bearer, and the access layer entity corresponding to the CC group setting is multiplexed or Demultiplexing data, as well as cascading, segmenting or/and reorganizing data packets;
  • Step 1607 The RN currently belonging to the UE sends an EPS bearer setup success response to the DeNB currently belonging to the UE.
  • Step 1608 The DeNB currently belonging to the UE forwards the EPS bearer setup success response to the MME.
  • step 1604 when the UE currently belongs to the DeNB determines to establish an EPS bearer for the UE on the RN to which the UE belongs, the packet indication message is sent to the RN, or is in the RN. A packet indication message is sent to the RN when the EPS bearer request message is sent. In this case, steps 1601 and 1602 of this embodiment may be cancelled.
  • the UE may also determine a mapping relationship between the EPS bearer and the CC group according to the received CC group in which the CC that establishes the RRC message source of the EPS bearer is located.
  • corresponding CC Group sets different access layer entities to multiplex or demultiplex data, and performs concatenation, segmentation or/and reassembly of data packets, etc.; in all embodiments of the present invention, when DeNB (or RN) Determining that the UE needs to establish an EPS bearer in the RN (or DeNB), the above embodiments focus on first notifying the RN (or DeNB) that the EPS bearer needs to be established for the UE by the DeNB (or RN), and then by the RN (or DeNB) A method of establishing the EPS bearer for a UE by using an RRC connection reconfiguration configuration procedure.
  • the DeNB determines that the EPS bearer needs to be established for the UE in the RN (or DeNB)
  • the DeNB (or RN) can also directly reconfigure with the UE through the RRC connection. The process is for the UE to establish the EPS bearer at the RN (or DeNB). Further, the DeNB (or RN) needs to inform the RN (or DeNB) of the EPS bearer. In this manner, the DeNB (or RN) may explicitly indicate the cell group Cell Group (or node) established by the EPS bearer in the RRC connection reconfiguration message, or allocate the DRB ID and/or in the foregoing embodiment 8 of the present invention.
  • the throughput of the data transmitted by the cell edge UE can be improved, the difference of the transmission data throughput between the cell edge UE and the cell center UE is reduced, and the service performance fairness between the UEs is improved.

Description

一种采用载波汇聚方式传输数据的方法、 系统及装置 本申请要求于 2011年 3月 3日提交中国专利局、申请号为 201110050985.5、 发明名称为"一种采用载波汇聚方式传输数据的方法、系统及装置"的中国专利 申请的优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域， 特别涉及一种采用载波汇聚（CA, Carrier Aggregation )方式传输数据的方法、 系统及装置。 背景技术
为了在通信系统中支持高达 1 Gbit/s的峰值数据速率传输， 目前在长期演 进系统（ LTE, Long Term Evolution )中 , 已经采用 CA方式作为扩展 LTE带 宽的方法。 CA方式的主要思想就是将多个组成载波（ CC, Component Carrier ) 汇聚成一个较大带宽的载波， 以支持高速率的数据传输、 图 1为现有技术采用 CA技术传输数据所采用的带宽结构示意图， 如图所示， 用于传输数据的下行 信道带宽采用了 5个 20M的载波汇聚而成， 包括载波 1、 载波 2、 载波 3、 载 波 4和载波 5。
CA可以分为两种类型， 一种为带内载波汇聚（intra-band CA ), 另一种 不同带间载波汇聚（inter-band CA )。 对于 intra-band CA, 由于汇聚的多个载 波处于同一频带， 所以其数据传输的覆盖范围保持一致。 对于 inter-band CA, 由于汇聚的多个载波处于不同的频带， 当频带所占用的频段之间相差比较远 时， 其数据传输的覆盖范围差别就比较大， 一般来说， 低频段的载波覆盖范围 大，而高频段的载波覆盖范围比较小。如图 2所示，图 2为现有技术 inter-band C A下的不同载波覆盖范围示意图， 空白区域为 800 M h z载波所覆盖的范围， 填充区域为 3Ghz载波所覆盖的范围， 可以看出， 3Ghz载波所覆盖的范围要 小于 800Mhz载波所覆盖的范围。
从图 2可以看出， 如果用户设备（UE, User Equipment )处于小区的中 心地带， 则 UE可以同时使用 inter-band CA中的高频载波和低频载波传输数 据， 但是， 如果 UE运动到小区的边缘地带， 则 UE无法使用高频的载波传输 数据， 小区边缘的 UE相比于小区中心的 UE传输数据的吞吐量会下降很多。
因此， 为了提高小区边缘 UE传输数据的吞吐量， 扩大高频载波的覆盖范 围， 在小区网络侧可以采用中继站（RN , relay Node )或者小型基站， 例如 微基站或家庭基站 Home eNB等， 扩大高频载波的覆盖范围， 如图 3所示的 现有技术扩大高频载波的覆盖范围网络结构示意图，增加两个 RN对高频载波 的覆盖进行扩展， 从而扩大高频载波的覆盖范围。 但是， 即使采用 RN扩大高 频载波的覆盖范围，处于小区边缘的 UE如果想要同时使用高频段和低频段的 组成载波， UE仍然需要聚合来自两个不同站点的载波， 即低频段的载波来自 宏基站（DeNB, Donor eNodeB ), 高频段的载波来自 RN或者其他小型基站。 这里将其称之为不同站点间载波汇聚（ inter-site CA )。
因此， UE如何实现聚合来自 DeNB与 RN的不同频段载波传输数据， 提 高 UE传输数据的吞吐量是一个亟待解决的问题。
发明内容
本发明实施例提供一种采用 CA方式传输数据的方法、 系统及装置， 使得 UE能够接收来自分属于不同基站的不同频段载波传输的数据， 提高 UE传输 数据的吞吐量。
本发明实施例的技术方案是这样实现的：
一种采用载波汇聚 CA方式传输数据的方法， 包括：
用户设备 UE在收发数据时， 确定与承载所述数据的演进分组系统 EPS 承载对应的组成载波组 CC Group, 所述 CC Group为建立所述 EPS承载的 站点所拥有的 CC集合或所述站点为 UE建立的 CC集合；
所述 UE根据所述 CC Group, 在至少两个接入层实体中确定与所述 CC Group对应的接入层实体；
在与所述 CC Group对应的接入层实体处理所述数据。 一种采用载波汇聚 CA方式传输数据的装置，包括：调度单元及处理单元， 其中， 调度单元， 用于在收发数据时， 确定与承载所述数据的演进分组系统
EPS承载对应的组成载波组 CC Group, 所述 CC Group为建立所述 EPS承 载的站点所拥有的 CC集合或所述站点为 UE建立的 CC集合， 并根据所述 CC Group, 在至少两个接入层实体中确定与所述 CC Group对应的接入层实 体； 处理单元， 用于在至少两个接入层实体中确定与所述 CC Group对应的接 入层实体处理所述数据。
通过采用上述技术方案， UE 能够根据不同 EPS 承载确定对应的 CC group,从而在该 CC group对应的接入层实体调度处理数据， 这样就使得 UE 能够接收聚合来自分属于不同基站的不同频段载波传输的数据， 并分别处理， 提高 UE传输数据的吞吐量。
另一方面，本发明实施例还提供一种采用载波汇聚 CA方式传输数据的方 法， 包括：
第一基站为用户设备 UE建立基于第一组成载波组 CC Group的第一演进 分组系统 EPS承载， 所述第一 CC Group为第一基站所拥有的 CC集合或所 述第一基站为 UE建立的 CC集合；
第一基站指示第二基站为所述 UE建立基于第二 CC Group的第二 EPS 承载， 所述第二 CC Group为第二基站所拥有的 CC集合或所述第二基站为 UE建立的 CC集合。
一种采用载波汇聚 CA方式传输数据的系统， 该系统包括： UE当前所属 第一基站、 UE及 UE当前所属第二基站， 其中，
UE当前所属第一基站， 用于建立基于第一组成载波组 CC Group的第一 演进分组系统 EPS承载， 所述第一 CC Group为第一基站所拥有的 CC集合 或所述第一基站为 UE建立的 CC集合； 指示第二基站为所述 UE建立基于第 二 CC Group的第二 EPS承载，所述第二 CC Group为第二基站所拥有的 CC 集合或所述第二基站为 UE建立的 CC集合； 通过自身所建立的第一 EPS承 载与 UE之间传输数据；
UE当前所属第二基站， 用于在 UE当前所属第一基站的指示下为 UE建 立第二 EPS承载， 通过自身所建立的第二 EPS承载与 UE之间传输数据；
UE, 用于在收发数据时， 确定与承载所述数据的演进分组系统 EPS承载 对应的组成载波组 CC Group , 在至少两个接入层实体中确定与所述 CC Group对应的接入层实体处理所述需收发的数据。
一种采用载波汇聚 CA方式传输数据的装置， 该装置包括： 建立单元、 指 示单元和传输单元， 其中，
建立单元，用于建立基于第一组成载波组 CC Group的第一演进分组系统 EPS承载， 所述第一 CC Group为第一基站所拥有的 CC集合或所述第一基 站为 UE建立的 CC集合；
指示单元，用于指示第二基站为所述 UE建立基于第二 CC Group的第二 EPS承载， 所述第二 CC Group为第二基站所拥有的 CC集合或所述第二基 站为 UE建立的 CC集合；
传输单元， 用于通过自身所建立的第一 EPS承载与 UE之间传输数据。 本发明实施例中的不同基站， 分别建立基于不同 CC Group的不同 EPS 承载， 在与 UE进行交互时， 也通过所建立的不同 EPS承载， 这样， 就可以 使得 UE根据不同 EPS承载识别出所对应的 CC Group, 以便进行分类处理， 有利于不同基站采用不同频段载波向同一个 UE传输数据， 提高 UE传输数据 的吞吐量。
附图说明
图 1为现有技术采用 CA技术传输数据所采用的带宽结构示意图； 图 2为现有技术 inter-band CA下的不同载波覆盖范围示意图；
图 3为现有技术扩大高频载波的覆盖范围网络结构示意图；
图 4a为本发明实施例提供的采用 CA方式传输数据的方法一流程图； 图 4b为本发明实施例提供的采用 CA方式传输数据的方法二流程图； 图 5为本发明实施例提供的采用 CA方式传输数据的系统结构示意图； 图 6a为本发明实施例提供的采用 CA方式传输数据的装置结构一示意图； 图 6b为本发明实施例提供的采用 CA方式传输数据的装置结构二示意图； 图 7为本发明实施例提供的采用 CA方式传输数据的系统具体实施例一示 意图；
图 8为本发明实施例提供的采用 CA方式传输数据的系统具体实施例二示 意图；
图 9为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE建 立 EPS承载的方法具体实施例一流程图；
图 10为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例二流程图；
图 1 1为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例三流程图；
图 12为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例四流程图；
图 13为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例五流程图；
图 14为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例六流程图；
图 15为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例七流程图；
图 16为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例八流程图。 具体实施方式
为使本发明的目的、技术方案及优点更加清楚明白， 以下参照附图并举实 施例， 对本发明作进一步详细说明。
UE如何实现聚合来自 DeNB与 RN的不同载波上传输的数据， 提高 UE 传输数据的吞吐量的关键在于， UE如何针对来自不同站点的数据进行接收合 并， 以及如何针对不同站点发送数据。 因此， UE 收发数据时， 根据承载该 数据的 EPS承载确定对应的组成载波组 ( CC Group ) , 并在至少两个接入层 实体中确定与所述 CC Group对应的接入层实体，由处理该 CC Group的接入 层实体对该数据处理 ,所述 CC Group为属于同一个站点的一个或多个 CC构 成的集合或所述站点为 UE建立的 CC集合， UE对应 CC Group设置自身不 同的接入层实体处理数据。 这样， 就使得 UE能够接收聚合来自分属于不同基 站的不同频段载波传输的数据， 并分别处理， 提高 UE传输数据的吞吐量。
相应地， UE当前所属不同基站， 分别建立基于不同 CC Group的不同 ( EPS, Evolved Packet System )承载， 在与 UE进行交互时， 也通过所建 立的不同 EPS承载， 这样， 就可以使得 UE根据不同 EPS承载识别出所对应 的 CC Group, 并分别处理， 从而使得 UE接收聚合来自分属于不同基站的不 同频段载波传输的数据， 提高 UE传输数据的吞吐量。
在这里， 站点为 UE当前所属第一基站或 UE当前所属第二基站， 所述处 理数据为执行 MAC解复用或复用。 另外， 在处理数据时还可以对无线链路控 制 （RLC, Radio Link Control )层进行级联、 分段或重组。 在处理数据时， 也可以只对 RLC层进行级联、 分段或重组。
这样， 就明确了 UE如何对来自不同站点的数据进行接收合并， 针对不同 站点传输数据。
在本发明实施例中， UE当前所属第一基站可以为 UE当前所属 DeNB, UE当前所属第二基站可以为 UE当前所属 RN。 进一步地， 在异构网络中， 除了 DeNB和 RN夕卜，也可以存在微型 eNB ( Pico eNB )以及家庭 eNB( Home eNB ) . 因此， 将本发明实施例中的 RN替换为微型 eNB以及家庭 eNB, 也 同样可以在 UE接入到两个不同基站的情况下， 将 UE当前的 EPS承载拆分 为不同的 EPS承载， 分别在 DeNB和微型 eNB上为 UE传输不同的数据。上 述 RN , Pico eNB以及 Home eNB可以统称为小型基站。
在以下的实施例中，将以 UE当前所属 DeNB和 UE当前所属 RN为例进 行叙述。
在本发明实施例中， UE设置 CC Group与 EPS承载之间的对应关系可 以为： 与 UE建立 EPS承载的站点为不同 CC Group的 EPS承载设置不同 EPS承载在接入层的标识，比如逻辑信道标识或 /和数据无线承载（ DRB, Data Radio Bearer )标识， UE设置 EPS承载在接入层标识和该 EPS承载所属 CC Group标识的对应关系。 UE传输数据的数据包头中携带 EPS承载在接入层 的标识， 由 UE 的接入层实体， 比如媒体接入控制 （MAC, Media Access Control )识别到该数据的数据包头中携带的 EPS承载在接入层的标识后， 确 定对应的 CC Group标识，进一步确认具有该 CC Group标识的 CC Group对 应的执行接入层实体， 由对应的接入层实体对该数据 MAC解复用或复用， 以 及 RLC层的级连、 分段或重组。
在本发明实施例中， 将来自不同站点的 CC划分为不同的 CC Group, 即 不同的 CC Group对应不同的站点， 后续描述中， 将使用 CC Group描述， 而 不再使用站点等名称。在这里， 站点可以为 UE当前所属 DeNB或 UE当前所 属 RN。
图 4a为本发明实施例提供的采用 CA方式传输数据的方法一流程图， 其 具体步骤为：
步骤 4000、 UE在收发数据时， 确定与承载所述数据的 EPS承载对应的 CC Group,所述 CC Group为建立所述 EPS承载的站点所拥有的 CC集合或 所述站点为 UE建立的 CC集合；
在该步骤中， UE设置有 CC Group与 EPS承载之间的对应关系； 如果 UE设置的为 CC Group标识与 EPS承载在接入层的标识之间的对 应关系， EPS承载在接入层的标识是 UE当前所属 DeNB统一分配的， 并在 与 UE建立 EPS承载过程中下发给 UE的， 也可以是 UE当前所属 DeNB和 UE当前所属 RN 自身使用的， 并分别下发给 UE的， 或者分别为 UE当前所 属 DeNB和 UE当前所属 RN设置 EPS承载在接入层的标识组， UE当前所 属 DeNB和 UE当前所属 RN从所对应的 EPS承载在接入层的标识组中选择 后， 下发给 UE;
步骤 4001、 UE根据所述 CC Group, 在至少两个接入层实体中确定与所 述 CC Group对应的接入层实体；
步骤 4002、 UE在与所述 CC Group对应的接入层实体处理所述数据； 在本步骤中， 处理所述数据为对数据进行 MAC解复用或复用， 或 /和执行 RLC层的级连、 分段或重组。
上述实施例的 UE能够根据不同 EPS承载确定对应的 CC group,从而在 该 CC group对应的接入层实体调度处理数据， 这样就使得 UE能够接收聚合 来自分属于不同基站的不同频段载波传输的数据， 并分别进行调度和处理，提 高 UE传输数据的吞吐量。 所述 CC group中可包括至少一个 CC。 本实施例 中 UE的服务站点可利用 CC group中的 CC通过对应的 EPS承载向 UE收发 数据等。
图 4b为为本发明实施例提供的采用 CA方式传输数据的方法二流程图， 其具体步骤为：
步骤 4100、 第一基站为 UE建立基于第一 CC Group的第一 EPS承载， 所述第一 CC Group为第一基站所拥有的 CC集合或所述第一基站为 UE建立 的 CC集合；
步骤 4100是在核心网实体的控制下进行的；
步骤 4101、 第一基站指示第二基站为所述 UE建立基于第二 CC Group 的第二 EPS承载， 所述第二 CC Group为第二基站所拥有的 CC集合或所述 第二基站为 UE建立的 CC集合。
在该实施例中， 第一基站为 UE当前所属 DeNB, 第二基站为 UE当前所 属 RN , 进行举例说明。
在该实施例， UE当前所属 DeNB可以根据获得的 UE当前所属 DeNB和 UE当前所属 RN的负载情况，及 UE向 UE当前所属 DeNB上才艮的 UE在 DeNB 和 /或 RN下的信号质量确定为 UE建立一个以上的 EPS ^ 载， 确定所建立的 该一个以上 EPS承载建立在 DeNB上还是 RN上。
在该实施例之前， UE当前所属 DeNB还可以接收到核心网实体发送的为 UE建立 EPS承载请求， 为 UE建立不同 CC Group下的 EPS承载。
在该实施例之前， UE当前所属 DeNB可以接收到 UE当前所述 RN发送 的分流 EPS承载请求。 在该实施例中， 当 UE当前所属 DeNB为 UE建立不同 CC Group下的 EPS承载时， 如果指示 UE当前所属 RN建立 EPS承载， 但是 UE当前所属 RN建立失败时， UE当前所属 DeNB还可以为 UE建立部分或全部 UE当前 所属 RN建立失败的 EPS承载。
在该实施例中， 当 UE当前所属 DeNB为 UE建立不同 CC Group下的
EPS承载时，还可以根据核心网实体的指示或根据 UE当前所属 RN反馈的信 息， 当由于 UE当前所属 RN要为 UE建立高优先级 EPS承载而移除的低优 先级别 EPS承载时， 可在 UE当前所属 DeNB上建立移除的低优先级别 EPS 承载。 或者， 当由于 UE当前所属 DeNB要为 UE建立高优先级 EPS承载移 除的低优先级别 EPS承载时， 可在 UE当前所属 RN上建立移除的低优先级 另' J EPS 载。 这时， UE当前所属 RN (或者 UE当前所属 DeNB ) ^！夺移除的 低优先级别 EPS承载上未完成传输的数据发送给 UE当前所属的 DeNB (或 者 UE当前所属的 RN ) 。
本发明实施例中的不同基站， 分别建立基于不同 CC Group的不同 EPS 承载至 UE, 在与所述 UE进行数据交互时， 也通过所建立的不同 EPS承载， 这样， 就可以使得 UE根据不同 EPS承载识别出所对应的 CC Group, 以便 进行分类处理， 有利于不同基站采用不同频段载波向同一个 UE传输数据， 提 高 UE传输数据的吞吐量。 特别地， 当不同基站中的一个基站在建立 EPS承 载时需要移除低优先级的 EPS承载， 则可以由另一基站代为建立该低优先级 的 EPS承载，使得 EPS承载的建立更加灵活，使不同站点通过载波汇聚来为 UE服务， 提高服务质量。 可以理解， 本实施例及后续实施例中， 一个站点的 低优先级的 EPS承载，是指相对于该站点需要建立的 EPS承载优先级低的承 载。这种优先级可能与服务需求相关， 例如与重要或紧急的服务相关的承载通 常有更高的优先级。
图 5为本发明实施例提供的采用 CA方式传输数据的系统结构示意图，包 括： UE当前所属第一基站、 UE及 UE当前所属第二基站， 其中，
UE当前所属第一基站， 用于建立基于第一组成载波组 CC Group的第一 演进分组系统 EPS承载， 所述第一 CC Group为第一基站所拥有的 CC集合 或所述第一基站为 UE建立的 CC集合； 指示第二基站为所述 UE建立基于第 二 CC Group的第二 EPS承载，所述第二 CC Group为第二基站所拥有的 CC 集合或所述第二基站为 UE建立的 CC集合； 通过自身所建立的第一 EPS承 载与 UE之间传输数据；
UE当前所属第二基站， 用于在 UE当前所属第一基站的指示下为 UE建 立第二 EPS承载， 通过自身所建立的第二 EPS承载与 UE之间传输数据；
UE, 用于在收发数据时， 确定与承载所述数据的演进分组系统 EPS承载 对应的组成载波组 CC Group , 在至少两个接入层实体中确定与所述 CC Group对应的接入层实体处理所述需收发的数据。
在该实施例中， 所述 UE当前所属第一基站， 还用于在核心网实体的控制 下或者在 UE当前所属第二基站的分流请求下，为 UE执行建立所述第一 EPS 承载并指示第二基站建立所述第二 EPS承载。
在该实施例中， 所述 UE当前所属第一基站， 还用于在 UE当前所属第二 基站要为 UE建立第二 EPS承载而移除的低优先级别 EPS承载时，在自身建 立或部分建立所述低优先级别的 EPS承载。
图 6a为本发明实施例提供的采用 CA方式传输数据的装置结构一示意图， 该装置为 DeNB, 建立单元、 指示单元和传输单元， 其中，
建立单元，用于建立基于第一组成载波组 CC Group的第一演进分组系统 EPS承载， 所述第一 CC Group为第一基站所拥有的 CC集合或所述第一基 站为 UE建立的 CC集合；
指示单元，用于指示第二基站为所述 UE建立基于第二 CC Group的第二
EPS承载， 所述第二 CC Group为第二基站所拥有的 CC集合或所述第二基 站为 UE建立的 CC集合；
传输单元， 用于通过自身所建立的第一 EPS承载与 UE之间传输数据。 在该实施例中， 还包括接收单元和控制单元， 其中，
接收单元，用于接收核心网实体发送的控制指令或 UE当前所属第二基站 发送的分流请求， 发送给控制单元，
控制单元， 用于控制建立单元和指示单元， 进行第一 EPS承载和指示第 二 EPS承载的建立。
在该实施例中， 所述建立单元中还包括分建立单元， 用于在 UE当前所属 第二基站要为 UE建立第二 EPS承载而移除的低优先级别 EPS承载时，建立 或部分建立所述低优先级别的 EPS承载。
图 6b为本发明实施例提供的采用 CA方式传输数据的装置结构二示意图， 该装置为 UE, 包括包括： 调度单元及处理单元，
其中， 调度单元， 用于在收发数据时， 确定与承载所述数据的演进分组系 统 EPS承载对应的组成载波组 CC Group, 所述 CC Group为建立所述 EPS 承载的站点所拥有的 CC集合或所述站点为 UE建立的 CC集合， 并根据所述 CC Group, 在至少两个接入层实体中确定与所述 CC Group对应的接入层实 体；
处理单元，用于在至少两个接入层实体中确定与所述 CC Group对应的接 入层实体处理所述数据。
在该实施例中， 所述处理单元还用于： 在与所述 CC Group对应的媒体接 入控制 MAC层执行所述数据的解复用或复用；和 /或在与所述 CC Group对应 的无线链路控制 RLC层执行所述数据的级连、 分段或重组。
图 7为本发明实施例提供的采用 CA方式传输数据的系统具体实施例一示 意图，其中包括 UE当前所属 DeNB,其具有的 CC Group为 CC Groupl , 即 由 CC1和 CC2构成 CC Gmupl , UE当前所属 RN , 其具有的 CC Group为 CC Group2, 即由 CC3和 CC4构成 CC Group 2, UE中包括接入层实体和 高层实体，其中，接入层实体依次包括物理层（PHY )、媒体接入控制（MAC )、 RLC和分组数据汇聚协议 ( PDCP, Packet Data Convergence Protocol ) 。
UE设置 CC Groupl与 CC1和 CC2对应， 设置 CC Group2与 CC3和 CC4 对应， 设置 CC Groupl对应接入层实体为 PHY1、 MAC1、 RLC1和 PDCP1 , 设置 CC Group2对应接入层实体为 PHY2、 MAC2、 RLC2和 PDCP2。 特别 地， 对于 PDCP1和 PDCP2可以在 UE中合并为一个 PDCP实体。 这样， 当 UE收发数据时， 根据承载该数据的 EPS承载确定对应的 CC Group, 由该 CC Group的接入层实体执行对该数据级连， 分段或 /和重组， 以及进一步地解 复用或复用等， 统称为处理数据， 也就是对数据进行 MAC解复用或复用， 以 及 RLC层的级连、 分段或重组。 如果该数据通过 CC1或 CC2传输， 则对应 CC Groupl , 由该 CC Groupl的执行接入层实体 MAC1对该数据执行复用或 解复用、 RLC1 对该数据执行级连， 分段或 /和重组等。 如果该数据通过 CC3 或 CC4传输，则对应 CC Group2 ,由该 CC Group2的执行接入层实体 MAC2 对该数据执行复用或解复用、 RLC2对该数据执行级连， 分段或 /和重组等。
图 8为本发明实施例提供的采用 CA方式传输数据的系统具体实施例二示 意图， 其中包括 UE当前所属的 DeNB, 其具有的 CC Group为 CC Groupl , UE的两个 EPS承载 EPS承载 1和 EPS承载 2建立在 CC1 Group 1 , 并分 别为两个 EPS承载分配逻辑信道标识 1和逻辑信道标识 2。 即对于 UE而言， 其可以通过网络为其 EPS承载分配的逻辑信道标识来对应确定该 EPS承载建 立在哪个 CC Group. UE当前所属的 RN ,其具有的 CC Group为 CC Group2, 即由 CC3和 CC4构成 CC Group2. UE在该 CC Group 2建立了一个 EPS承 载， 并该 EPS承载分配逻辑信道标识 3, UE中包括接入层实体和高层实体， 其中， 接入层实体依次包括 PHY, MAC, RLC 和 PDCP。 UE设置逻辑信道 标识 1 和逻辑信道标识 2与 CC Groupl对应， 设置逻辑信道标识 3与 CC Group2对应， 设置 CC Groupl对应接入层实体为 PHY1 , MAC1和 RLC, 设置 CC Group2对应接入层实体为 PHY2和 MAC2和 RLC。 这样， 当 UE 收发数据时，根据该数据的数据包头携带的逻辑信道标识， 就可以确定承载该 数据的 EPS承载所属的 CC Group, 由该 CC Group对应的接入层实体执行 对该数据的 MAC解复用或复用， 以及 RLC层的级连， 分段或 /和重组等。 也 就是如果该数据的数据包头中携带逻辑信道标识 1或逻辑信道标识 2,则对应 CC Groupl，由该 CC Groupl对应的接入层实体 PHY1和 MAC1对该数据进 行复用或解复用， 由该 CC Groupl对应的接入层实体 RLC执行级连， 分段或 /和重组等，如果该数据的数据包头中携带逻辑信道标识 3,则对应 CC Group2, 由该 CC Group2对应的接入层实体 PHY2和 MAC2对该数据进行复用或解复 用， 由该 CC Group2对应的接入层实体 RLC执行级连， 分段或 /和重组等。
需要说明的是，上述是为了描述方便而将 CC1 Groupl对应的接入层实体 描述为 PHY1 , MAC1 , RLC1和 PDCP1. 将 CC2 Group2对应的接入层实体 描述为 PHY2, MAC2, RLC2和 PDCP2. 简言之， 即为 UE根据承载该数据 包的 EPS承载对应的 CC Group, 在 UE的接入层实体针对这些数据进行分 组处理， 即基于 CC Group进行数据的分组 MAC 复用 /解复用， 进行 RLC的 分组级连， 分段或 /和重组等。 这些分组处理， 可以说通过软件进行逻辑上的 分组处理， 也可以是通过硬件进行物理上的分组处理， 本发明不做限制。
以下举几个具体实施例对 EPS承载建立过程进行详细说明
具体实施例一
图 9为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE建 立 EPS承载的方法具体实施例一流程图， 该方法包括：
步骤 901、 当前所属 DeNB接收到 UE传输数据的信号质量信息； 在本步骤中， 该信号质量信息是 UE检测并上报的 （在图中表示为由 UE 发送）， 或 RN检测并上报的， 具体包括所属 RN所控制各个小区的信号质量 信息， 或者为 UE所选择的在所属 RN下的服务小区的信号质量信息；
在本步骤中，该信号质量信息还可以为 UE在当前所属 RN负责的所有小 区下的一个总体平均信号质量信息，或者 UE在当前所属 RN负责的所有小区 中选择的服务小区的一个总体平均信号质量信息；
步骤 902、UE当前所属 RN向 UE当前所属 DeNB发送 UE当前所属 RN 的当前负载状况信息；
步骤 903、 移动性管理实体（MME, Mobility Management Network ) 向 UE当前所属 DeNB发送为 UE建立 EPS承载的请求；
在本步骤中， 还可以是其他核心网实体， 比如服务网关（S-GW ) , 或公 共数据网网关 （PDN-GW, Public Data Network ) 向 UE当前所属 DeNB发 送为 UE建立 EPS承载的请求；
步骤 904、 UE当前所属 DeNB接收到该请求后， 根据自身负载、 UE当 前所属 RN的负载信息及 UE上报的信号质量信息中的一项或多项确定为 UE 建立 EPS承载， 及所建立的 EPS承载所在的节点；
在该步骤中， 假设 DeNB确定要将该 EPS承载建立在 UE当前所属 RN 上；
步骤 905、 UE当前所属 DeNB向 UE当前所属 RN发送 EPS承载建立请 求；
步骤 906、 UE当前所属 RN接收到该请求后，与 UE之间通过 RRC连接 重配置过程协商建立 EPS承载； 步骤 907、 UE当前所属 RN确定为 UE建立 EPS承载成功或失败， 如果 成功， 向 UE当前所属 DeNB反馈 EPS承载建立成功消息， 否则， 向 UE当 前所属 DeNB反馈 EPS承载建立失败消息；
步骤 908、 UE当前所属 DeNB接收到 UE当前所属 RN反馈的 EPS承载 建立消息， 如果该消息为 EPS承载建立成功消息， 则直接向 MME发送建立 EPS承载响应，如果该消息为 EPS承载建立失败消息，则 UE当前所属 DeNB 决定是否接受或部分接受在 UE当前所属 RN上建立失败的 EPS承载， 如果 都不能， 则向 MME反馈建立 EPS承载失败响应， 如果能接受全部， 则与 UE 通过 RRC连接重配置过程建立 EPS承载后， 向 MME发送建立 EPS承载响 应，如果能部分接受，则与 UE通过 RRC连接重配置过程建立部分 EPS承载 后， 向 MME发送建立 EPS承载响应， 携带建立成功的部分 EPS承载信息及 /或未建立的部分 EPS承载信息。 具体实施例二
图 10为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例二流程图， 该方法包括：
步骤 1001、MME通过 UE当前所属 DeNB向 UE当前所属 RN发送 EPS 承载建立请求， 该请求包括 Pre-emption指示， 表示 MME指示接入网实体可 以在传输数据资源受限的情况下， 将低优先级的 EPS承载移除， 建立当前请 求的 EPS承载；
在该步骤中，还可以是其他核心网实体， 比如 S-GW,或 PDN-GW向 UE 当前所属 DeNB发送为 UE建立 EPS承载的请求；
步骤 1002、 UE当前所属 RN接收到该请求后， 与 UE通过 RRC连接重 配置过程协商 EPS承载建立， 在该过程中， 为 UE建立 EPS承载， 移除某个 低优先级的 EPS承载；
步骤 1003、 UE当前所属 RN向 UE当前所属 DeNB反馈 EPS承载建立 成功消息， 携带被移除的低优先级的 EPS承载的信息；
步骤 1004、 UE当前所属 DeNB确定是否能够接受被移除的该低优先级 的 EPS承载，如果是，则在 UE当前所属 DeNB建立该低优先级的 EPS承载， 向 MME反馈 EPS承载建立成功消息，如果否，则向 MME转发 UE当前所属 RN反馈的 EPS承载建立成功消息， 其中包含被移除的低优先级 EPS承载的 信息； UE当前所属 DeNB与 UE通过 RRC连接重配置过程建立该低优先级 的 EPS承载或部分该低优先级的 EPS承载；
在本步骤中， 如果该低优先级的 EPS承载为多个， UE 当前所属 DeNB 只能接受部分， 则在 UE当前所属 DeNB建立部分被 RN移除的低优先级的 EPS承载， 然后向 MME反馈 EPS承载建立响应， 携带无法建立的被 RN移 除的低优先级的 EPS承载信息；
在本步骤中， 当 UE的低优先级的 EPS承载建立在 DeNB后， 相应地， UE需要更新该低优先级承载与 CC Group或者建立站点之间的映射关系； 步骤 1005、 UE当前所属 DeNB向 UE当前所属 RN通知其建立的该低 优先级的 EPS承载或部分该低优先级的 EPS承载信息；
步骤 1006、 UE当前所属 RN接收到通知后， 向 UE当前所属 DeNB转 发其建立的该低优先级的 EPS承载或部分该低优先级的 EPS承载所对应的在 RN中没有完成收发的数据；
在本步骤中， 如果其建立的该低优先级的 EPS承载或部分该低优先级的 EPS承载采用 RLC AM模式， 应该为确认模式， 则没有完成传输的数据包含 没有被 UE确认正确接收的和没有向 UE发送的； 如果采用 UM模式， 应该为 非确认模式， 则没有完成收发的数据包含没有向 UE发送的。 实施例三
在该实施例中， 由 UE当前所属 DeNB集中控制 UE当前所属 RN的低优 先级别的 EPS承载删除。
图 1 1为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例三流程图， 该方法包括：
步骤 1 101、MME通过 UE当前所属 DeNB向 UE当前所属 RN发送 EPS 承载建立请求， 该请求包括 Pre-emption指示， 表示 MME指示接入网实体可 以在传输数据资源受限的情况下， 将低优先级的 EPS承载移除， 建立当前请 求的 EPS ^ 载； 步骤 1 102、 UE当前所属 RN确定需要删除自身的低优先级别的 EPS承 载， 向 UE当前所属 DeNB反馈 EPS承载建立响应， 携带 EPS Pre-emption 指示，表示删除自身的低优先级别的 EPS承载，可选地，可以携带要删除 EPS 承载在接入层的标识；
步骤 1 103、 UE当前所属 DeNB检测是否可以接受或部分接受 UE当前 所属 RN要删除的该低优先级别的 EPS承载，或者建立 MME要求建立的 EPS 承载；
步骤 1104、如果 UE当前所属 DeNB能够建立 MME要求建立的 EPS承 载， 则向 UE当前所属 RN发送 EPS承载保持请求消息， 指示 UE当前所属 RN不执行之前 DeNB发送的 EPS承载建立请求（在图中没有体现） ； 如果 可以接受 UE当前所属 RN要删除的该低优先级别的 EPS承载， 向 UE当前 所属 RN发送 EPS承载建立请求消息， 指示为 UE建立 EPS承载， 该消息还 携带被 UE当前所属 DeNB接受的低优先级别的 EPS承载在接入层的标识； 如果 UE当前所属 DeNB能够建立 MME要求建立的 EPS承载， UE当前 所属 DeNB与 UE通过 RRC连接重配置过程为 UE建立 EPS承载（在图中没 有体现） ；
步骤 1 105, 如果 UE当前所属 DeNB接受 UE当前所属 RN要删除的该 低优先级别的 EPS承载， UE当前所属 DeNB与 UE通过 RRC连接重配置过 程建立所接受的 UE当前所属 RN要删除的该低优先级别的 EPS承载， UE当 前所属 RN与 UE通过 RRC连接重配置过程为 UE建立 EPS承载， 并移除 UE当前所属 DeNB所接受 UE当前所属 RN要删除的该低优先级别的 EPS 承载；
在本步骤中， 相应地， UE需要更新该低优先级承载与 CC Group或者建 立节点之间的映射关系；
步骤 1106、 UE当前所属 DeNB向 MME发送 EPS承载建立成功响应； 步骤 1107、 UE当前所属 RN向 UE当前所属 DeNB转发其接受的该低 优先级的 EPS承载所对应的在 RN中没有完成收发的数据；
在本步骤中， 如果其建立的该低优先级的 EPS承载采用 RLC AM模式， 则没有完成传输数据包含没有被 UE确认正确接收的和没有向 UE发送的； 如 果采用 UM模式， 则没有完成传输数据包含没有向 UE发送的。 实施例四
在该实施例中， UE当前所属 RN请求 UE当前所属 DeNB分流其已经建 立的 EPS承载， UE当前所属 DeNB请求 UE当前所属 RN分流其已建立的 EPS承载过程类似。
图 12为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例四流程图， 该方法包括：
步骤 1201、 UE当前所属 RN向 UE当前所属 DeNB发送 EPS承载分流 请求， 该请求携带被分流的 EPS承载在核心网的标识， 或者包含请求分流的 EPS承载的个数， 或者包含请求分流的数据吞吐量；
步骤 1202、UE当前所属 DeNB向 UE当前所属 RN发送 EPS分流响应， 携带所接受的被分流 EPS承载在核心网的标识；
步骤 1203、 UE当前所属 RN与 UE通过 RRC连接重配置过程协商 EPS 承载的修改： 相应地， UE需要更新该被分流的 EPS承载与 CC Group或者 建立节点之间的映射关系。 针对被 UE当前所属 DeNB分流的 EPS承载， 向 UE当前所属 DeNB转发所对应的在 RN中没有完成传输的数据；
在本步骤中， 如果分流的 EPS承载采用 RLC AM模式， 则没有传输数据 包含没有被 UE确认正确接收的和没有向 UE发送的； 如果采用 UM模式， 则 没有传输数据包含没有向 U E发送的；
步骤 1204、 UE当前所属 DeNB与 UE通过 RRC连接重配置过程协商 EPS承载的修改， 将从 UE当前所属 RN分流的 EPS承载建立在 UE当前所 属 DeNB。相应地， UE需要更新该被分流的 EPS承载与 CC Group或者建立 节点之间的映射关系。
以上实施例是 4叚设 UE当前所属 RN请求 UE当前所属 DeNB为其分流
EPS承载， 对于 UE当前所属 DeNB请求 UE当前所属 RN为其分流 EPS承 载的过程类似。 实施例五 在该实施例中， 由核心网实体控制 UE 当前所属 DeNB在 UE 当前所属 DeNB和 UE当前所属 RN上为 UE建立 EPS承载。
图 13为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例五流程图， 该方法包括：
步骤 1301、 MME接收到 UE已经与 UE当前所属 RN和当前所属 DeNB 建立了同步连接的通知；
在本步骤中， 该通知可以是 UE当前所属 RN发送的；
在本步骤中， 也可以是其他核心网实体接收到， 这里不再限定； 步骤 1302、 MME接收到 UE传输数据的信号质量信息， 包括在 UE当前 所属 RN传输数据的信号质量信息及负载信息，及 UE当前所属 DeNB传输数 据的信号质量信息及负载信息；
UE当前所属 RN传输数据的信号质量信息具体为：为 UE在当前所属 RN 负责的所有小区下的一个总体平均信号质量信息，或者 UE在当前所属 RN负 责的所有小区中选择的服务小区的一个总体平均信号质量信息；
在本步骤中， 该信号质量信息还可以为 UE当前所属 RN所有为 UE建立 的 EPS承载传输数据的平均总信号质量信息，或者 UE所选择的当前所属 RN 所有为 UE建立的 EPS承载在服务小区的平均信号质量信息；
对于 UE当前所属 DeNB传输数据的信号质量信息及负载信息，与上述过 程类似， 这里不再贅述；
步骤 1303、 MME根据接收到的信息确定为 UE建立 EPS承载， 且确定 为 UE建立的 EPS承载所在 UE当前所属 DeNB或 /和 UE当前所属 RN上； 在本步骤中，假设 MME确定将为 UE建立的 EPS承载建立在 UE当前所 属 RN上；
步骤 1304、MME通过 UE当前所属 DeNB向 UE当前所属 RN发送 EPS 7 载建立请求；
步骤 1305、 UE当前所属 RN接收到该请求后， 与 UE通过 RRC连接重 配置过程协商 EPS承载建立， 建立成功；
步裝 1306、 UE当前所属 RN EPS建立成功响应发送给 DeNB, DeNB 转发给 MME。 实施例六
在该实施例中， 由 DeNB 统一控制 EPS 承载所对应的数据无线承载 ( DRB )标识和 /或逻辑信道标识的分配。
图 14为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例六流程图， 该方法包括：
步骤 1401、UE当前所属 DeNB接收到来自 MME的 EPS承载建立请求， 确定在 UE当前所属 RN上为 UE建立 EPS承载， 为要建立的 EPS承载分配 DRB标识和 /或逻辑信道标识；
步骤 1402、 UE当前所属 DeNB向 UE当前所属 RN发送 EPS承载建立 请求， 包含为要建立的 EPS承载分配的 DRB标识和 /或逻辑信道标识；
步骤 1403、 UE当前所属 RN与 UE通过 RRC连接重配置过程， 为 UE 建立 EPS承载， 在该过程中， UE设置该 EPS承载所属 CC Group标识与该 EPS承载的 DRB标识和 /或逻辑信道标识的对应关系， 以及对应 CC Group 设置不同的接入层实体执行数据包的复用或解复用， 以及级连， 分段或 /和重 组等；
步骤 1404、 UE当前所属 RN向 UE当前所属 DeNB发送 EPS承载建立 成功响应；
步骤 1405、 UE当前所属 DeNB向 MME发送 EPS承载建立成功响应。 实施例七
在该实施例中， UE当前所属 DeNB向 UE当前所属 RN互相通知自身使 用过的 DRB标识和逻辑信道标识， 也就是进行分布式管理。
图 15为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例七流程图， 该方法包括：
步骤 1501、UE当前所属 DeNB接收到来自 MME的 EPS承载建立请求， 确定在 UE当前所属 RN上为 UE建立 EPS承载，通知 UE当前所属 RN其已 经使用的 DRB标识和 /或逻辑信道标识；
步骤 1502、 UE当前所属 DeNB向 UE当前所属 RN发送 EPS承载建立 请求， 包含其已经使用的 DRB标识和 /或逻辑信道标识；
步骤 1503、 UE当前所属 RN与 UE通过 RRC连接重配置过程， 为 UE 建立 EPS承载， 在该过程中， UE设置该 EPS承载所属 CC Group标识与该 EPS承载的 DRB标识和 /或逻辑信道标识的对应关系， 以及对应 CC Group 设置不同的接入层实体复用或解复用数据， 以及进行数据包的级连， 分段或重 组等；
RN在分配 DRB标识和 /或逻辑信道标识时， 不使用 UE当前所属 DeNB 已经使用的 DRB标识和 /或逻辑信道标识；
步骤 1504、 UE当前所属 RN向 UE当前所属 DeNB发送 EPS承载建立 成功响应， 携带为 UE分配的 EPS承载所使用的 DRB标识和 /或逻辑信道标 识；
步骤 1505、 UE当前所属 DeNB接收到 EPS承载建立成功响应后， 更新 所存储的 DRB标识和 /或逻辑信道标识。 实施例八
在该实施例中， UE当前所属 DeNB和 UE当前所属 RN半静态划分 DRB 标识和 /或逻辑信道标识的使用， 将所有的 DRB标识和 /或逻辑信道标识分组， UE当前所属 DeNB和 UE当前所属 RN分别使用其中的一组， 以下以 UE当 前所属 RN向 UE当前所属 DeNB请求为例说明， 反之亦然。
图 16为本发明实施例提供的采用 CA方式下 UE当前所属 DeNB为 UE 建立 EPS承载的方法具体实施例八流程图， 该方法包括：
步骤 1601、UE当前所属 RN向 UE当前所属 DeNB发送为 UE建立 EPS 承载的 DRB标识和 /或逻辑信道标识分组请求消息；
在本步骤中， 在该请求消息中还可以携带 UE 当前所属 RN 建议建立的 RN希望使用的 DRB标识和 /或逻辑信道标识；
步骤 1602、 UE当前所属 DeNB向 UE当前所属 RN反馈分组指示消息， 携带 UE当前所属 DeNB和 UE当前所属 RN为 UE建立 EPS承载时分别使 用的 DRB标识和 /或逻辑信道标识；
步骤 1603、 UE当前所属 DeNB接收到 MME发送的 EPS承载建立请求； 步骤 1604、 UE当前所属 DeNB确定在 UE当前所属 RN上为 UE建立 EPS承载； 步骤 1605、 UE当前所属 DeNB向 UE当前所属 RN发送 EPS承载建立 请求；
步骤 1606、 UE当前所属 RN从为 UE建立 EPS承载所分配的 DRB标识 和 /或逻辑信道标识中选择一组可用空闲的 DRB 标识和 /或逻辑信道标识， 与 UE通过 RRC连接重配置过程， 为 UE建立 EPS承载， 在该过程中， UE设 置该 EPS承载所属 CC Group标识与该 EPS承载的 DRB标识和 /或逻辑信道 标识的对应关系，以及对应 CC Group设置不同的接入层实体复用或解复用数 据， 以及进行数据包的级连， 分段或 /和重组等；
步骤 1607、 UE当前所属 RN向 UE当前所属 DeNB发送 EPS承载建立 成功响应；
步骤 1608、 UE当前所属 DeNB向 MME转发该 EPS承载建立成功响应。 需要说明的是， 在该实施例中， 也可以是在步骤 1604中， 当 UE当前所 属 DeNB确定在 UE当前所属 RN上为 UE建立 EPS承载时， 向 RN发送分 组指示消息， 或者是在向 RN发送 EPS承载请求消息时向 RN发送分组指示 消息。 在这种情况下， 该实施例的步骤 1601和 1602可以取消。 除上述方法外， 在本发明的所有实施例中， UE也可以根据所接收到的建 立该 EPS承载的 RRC消息来源的 CC所在的 CC Group确定该 EPS承载与 CC Group之间的映射关系。 从而对应 CC Group设置不同的接入层实体复用 或解复用数据， 以及进行数据包的级连， 分段或 /和重组等； 在本发明的所有实施例中， 当 DeNB (或者 RN )确定需要为 UE在 RN (或者 DeNB )建立 EPS承载时，上述这些实施例重点描述了通过 DeNB (或 者 RN )首先通知 RN (或者 DeNB )需要为 UE建立所述 EPS承载， 然后由 RN (或者 DeNB )通过 RRC连接重配置配置过程为 UE建立所述 EPS承载 的方法。 需要说明的是， 当 DeNB (或者 RN )确定需要为 UE在 RN (或者 DeNB ) 建立 EPS承载时， DeNB (或者 RN )也可以直接与 UE通过 RRC连接重配 置过程为 UE在 RN (或者 DeNB )建立所述 EPS承载。进一步地， DeNB (或 者 RN ) 需要通知 RN (或者 DeNB )该 EPS承载。 使用这种方式时， DeNB (或者 RN )可以在 RRC连接重配置消息中明确指示所述 EPS承载建立的小 区组 Cell Group (或者节点） ， 或者通过本发明上述实施例 8中分配 DRB ID 和 /或逻辑信道 ID的方式来隐式通知 UE所述 EPS建立的 Cell Group (或者 节点） ， 即所述 EPS承载对应的的 Cell Group (或者节点） 。 该方法尤其适 用于没有 RRC功能的 RN的情况。
采用本发明实施例， 可以提高小区边缘 UE传输数据的吞吐量， 降低小区 边缘 UE和小区中心 UE之间传输数据吞吐量的差别， 改善了 UE之间的业务 性能公平性。
以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡在本发 明的精神和原则之内， 所做的任何修改、 等同替换、 改进等， 均应包含在本发 明保护的范围之内。

Claims

权 利 要 求 书
1、 一种采用载波汇聚 CA方式传输数据的方法， 其特征在于， 包括： 用户设备 UE在收发数据时， 确定与承载所述数据的演进分组系统 EPS 承载对应的组成载波组 CC Group, 所述 CC Grou 为建立所述 EPS承载的站 点所拥有的 CC集合或所述站点为 UE建立的 CC集合；
所述 UE根据所述 CC Group, 在至少两个接入层实体中确定与所述 CC Grou 对应的接入层实体；
在与所述 CC Grou 对应的接入层实体处理所述数据。
2、 如权利要求要求 1所述的方法， 其特征在于， 所述在与所述 CC Group 对应的接入层实体处理所述数据包括：
在与所述 CC Group对应的媒体接入控制 MAC层执行所述数据的解复用 或复用； 和 /或
在与所述 CC Group对应的无线链路控制 RLC层执行所述数据的级连、分 段或重组。
3、 如权利要求 1或 2所述的方法， 其特征在于， 所述确定与承载所述数 据的 EPS承载对应的 CC Grou 包括：
所述 UE确定与所述 EPS承载在接入层的标识对应的 CC Grou 标识； 所述 UE根据所述 CC Group, 在至少两个接入层实体中确定与所述 CC Grou 对应的接入层实体包括：
所述 UE根据所述 CC Grou 标识， 在至少两个接入层实体中确定与所述
CC Grou 对应的接入层实体。
4、 如权利要求 3所述的方法， 其特征在于， 所述 EPS承载在接入层的标 识携带在所述数据的数据包头中。
5、 如权利要求 3所述的方法， 其特征在于， 还包括：
所述 UE获取第一 EPS承载在接入层的标识以及第二 EPS承载在接入层 的标识， 所述第一 EPS承载为第一基站基于第一 CC Grou 为该 UE建立， 所 述第二 EPS承载为第二基站基于第二 CC Grou 为该 UE建立；
所述 UE设置一对应关系， 所述对应关系包括： 第一 EPS承载在接入层的 标识与第一 CC Grou 标识对应， 第二 EPS承载在接入层的标识与第二 CC Grou 标识对应。
6、 如权利要求 5所述的方法， 其特征在于， 还包括：
所述第一基站分配第二 EPS承载在接入层的标识， 并将该第二 EPS承载 在接入层的标识通过 EPS承载建立请求发送给所述第二基站； 所述第二基站 使用所述第二 EPS承载在接入层的标识为 UE建立第二 EPS承载； 或者
所述第一基站向所述第二基站发送为 UE建立 EPS承载的请求消息，在所 述建立 EPS承载的请求消息中携带第一基站已使用的 EPS承载在接入层的标 识； 所述第二基站使用除所述第一基站已使用的 EPS承载在接入层的标识之 外的其他标识为 UE建立第二 EPS承载； 或者
所述第一基站向第二基站发送分组指示消息，在所述分组指示消息中携带 第一基站确定的第二基站的 EPS承载在接入层的标识组， 所述第二基站采用 第二基站的 EPS承载在接入层的标识组中的标识为 UE建立第二 EPS承载。
7、 如权利要求 6所述的方法， 其特征在于， 还包括： 所述第一基站确定 第一基站的 EPS承载在接入层的标识组， 所述第一基站采用第一基站的 EPS 承载在接入层的标识组中的标识为 UE建立第一 EPS承载。
8、 如权利要求 6所述的方法， 其特征在于， 在所述第一基站向第二基站 发送分组指示消息前，还包括： 所述第二基站向所述第一基站发送分组请求消 息， 以请求将 EPS承载在接入层的标识在第一基站和第二基站之间进行分组 使用。
9、 一种采用载波汇聚 CA方式传输数据的方法， 其特征在于， 包括： 第一基站为用户设备 UE建立基于第一组成载波组 CC Grou 的第一演进 分组系统 EPS承载， 所述第一 CC Group为第一基站所拥有的 CC集合或所述 第一基站为 UE建立的 CC集合； 第一基站指示第二基站为所述 UE建立基于第二 CC Group的第二 EPS承 载， 所述第二 CC Group为第二基站所拥有的 CC集合或所述第二基站为 UE 建立的 CC集合。
10、 如权利要求 9所述的方法， 其特征在于， 该方法还包括：
在第二基站为 UE建立第二 EPS承载失败时，第一基站在自身建立部分或 全部第二 EPS承载。
11、 如权利要求 9所述的方法， 其特征在于， 所述第一基站在核心网实体 的控制下， 或在接收到核心网实体发送的 EPS承载建立请求后， 或在接收到 所述第二基站发送的分流请求后， 执行所述方法。
12、 如权利要求 9所述的方法， 其特征在于， 该方法还包括：
第二基站通知第一基站该第二基站需要移除自身低优先级别的 EPS承载， 则第一基站在自身建立或部分建立所述低优先级别的 EPS承载。
13、 如权利要求 9所述的方法， 其特征在于， 还包括：
第二基站通知第一基站该第二基站需要移除自身低优先级别的 EPS承载； 如果第一基站能够自身为 UE建立所述第二 EPS承载，则指示第二基站不移除 所述低优先级的 EPS承载或者指示第二基站取消所述第二 EPS承载的建立， 并通过无线资源控制 RRC连接重配置过程为 UE建立所述第二 EPS承载。
14、 如权利要求 12或 13所述的方法， 其特征在于， 所述第二基站通知第 一基站该第二基站需要移除自身低优先级别的 EPS承载包括：
第二基站向第一基站发送第二 EPS承载建立成功消息， 在所述第二 EPS 承载建立成功消息中携带所述需要移除的低优先级别的 EPS承载的指示信息。
15、 如权利要求 9所述的方法， 其特征在于， 该方法还包括：
第一基站从第二基站接收到 EPS承载分流请求， 所述 EPS承载分流请求 中携带要分流的 EPS承载信息；
第一基站向第二基站返回 EPS承载分流响应， 所述 EPS承载分流响应中 携带可以分流的 EPS承载信息。
16、 如权利要求 12或 13所述的方法， 其特征在于， 还包括： 所述第二基站将要通过移除的低优先级别的 EPS承载传输的数据发送给 第一基站。
17、 如权利要求 9 - 13、 15任一所述的方法， 其特征在于， 还包括： 所述第一基站根据所述第一基站和所述第二基站的负载情况、 以及 UE在 第一基站或 /和第二基站下的信号质量， 确定为 UE建立所述第一 EPS承载和 第二 EPS承载。
18、 如权利要求 9 - 13、 15任一所述的方法， 其特征在于， 所述第一基站 为宏基站 DeNB; 所述第二基站为中继站、 微型基站或家庭基站。
19、 一种采用载波汇聚 CA方式传输数据的系统， 其特征在于， 该系统包 括： UE当前所属第一基站、 UE及 UE当前所属第二基站， 其中，
UE当前所属第一基站， 用于建立基于第一组成载波组 CC Grou 的第一 演进分组系统 EPS承载， 所述第一 CC Grou 为第一基站所拥有的 CC集合或 所述第一基站为 UE建立的 CC集合； 指示第二基站为所述 UE建立基于第二 CC Grou 的第二 EPS承载，所述第二 CC Grou 为第二基站所拥有的 CC集合 或所述第二基站为 UE建立的 CC集合； 通过自身所建立的第一 EPS承载与 UE之间传输数据；
UE当前所属第二基站， 用于在 UE当前所属第一基站的指示下为 UE建 立第二 EPS承载， 通过自身所建立的第二 EPS承载与 UE之间传输数据； UE, 用于在收发数据时， 确定与承载所述数据的演进分组系统 EPS承载 对应的组成载波组 CC Group, 在至少两个接入层实体中确定与所述 CC Group 对应的接入层实体处理所述需收发的数据。
20、 如权利要求 19所述的系统， 其特征在于， 所述 UE当前所属第一基 站，还用于在核心网实体的控制下或者在 UE当前所属第二基站的分流请求下， 为 UE执行建立所述第一 EPS承载并指示第二基站建立所述第二 EPS承载。
21、 如权利要求 19或 20所述的系统， 其特征在于， 所述 UE当前所属第 一基站，还用于在 UE当前所属第二基站要为 UE建立第二 EPS承载而移除的 低优先级别 EPS承载时，在自身建立或部分建立所述低优先级别的 EPS承载。
22、 一种采用载波汇聚 CA方式传输数据的装置， 其特征在于， 该装置包 括： 建立单元、 指示单元和传输单元， 其中，
建立单元， 用于建立基于第一组成载波组 CC Grou 的第一演进分组系统
EPS承载， 所述第一 CC Group为第一基站所拥有的 CC集合或所述第一基站 为 UE建立的 CC集合；
指示单元， 用于指示第二基站为所述 UE建立基于第二 CC Group的第二 EPS承载， 所述第二 CC Group为第二基站所拥有的 CC集合或所述第二基站 为 UE建立的 CC集合；
传输单元， 用于通过自身所建立的第一 EPS承载与 UE之间传输数据。
23、 如权利要求 22所述的装置， 其特征在于， 还包括接收单元和控制单 元， 其中，
接收单元，用于接收核心网实体发送的控制指令或 UE当前所属第二基站 发送的分流请求， 发送给控制单元，
控制单元， 用于控制建立单元和指示单元， 进行第一 EPS承载和指示第 二 EPS承载的建立。
24、 如权利要求 22或 23所述的装置， 其特征在于， 所述建立单元中还包 括分建立单元，用于在 UE当前所属第二基站要为 UE建立第二 EPS承载而移 除的低优先级别 EPS承载时， 建立或部分建立所述低优先级别的 EPS承载。
25、 一种采用载波汇聚 CA方式传输数据的装置， 其特征在于， 包括： 调 度单元及处理单元，
其中， 调度单元， 用于在收发数据时， 确定与承载所述数据的演进分组系 统 EPS承载对应的组成载波组 CC Group, 所述 CC Grou 为建立所述 EPS承 载的站点所拥有的 CC集合或所述站点为 UE建立的 CC集合，并根据所述 CC Group, 在至少两个接入层实体中确定与所述 CC Grou 对应的接入层实体； 处理单元， 用于在至少两个接入层实体中确定与所述 CC Grou 对应的接 入层实体处理所述数据。
26、 如权利要求 25所述的装置， 其特征在于， 所述处理单元还用于： 在与所述 CC Group对应的媒体接入控制 MAC层执行所述数据的解复用 或复用； 和 /或
在与所述 CC Group对应的无线链路控制 RLC层执行所述数据的级连、分 段或重组。
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CN106411491B (zh) 2019-09-10
CN106535337B (zh) 2023-07-18
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US20140010192A1 (en) 2014-01-09
US20160087770A1 (en) 2016-03-24
EP2675228A1 (en) 2013-12-18
EP3229545A1 (en) 2017-10-11
EP2675228A4 (en) 2014-04-02
EP3764580A1 (en) 2021-01-13
CN106535337A (zh) 2017-03-22
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CN102655682A (zh) 2012-09-05

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