WO2013139004A1 - 一种建立演进分组系统承载的方法及基站 - Google Patents
一种建立演进分组系统承载的方法及基站 Download PDFInfo
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- WO2013139004A1 WO2013139004A1 PCT/CN2012/072695 CN2012072695W WO2013139004A1 WO 2013139004 A1 WO2013139004 A1 WO 2013139004A1 CN 2012072695 W CN2012072695 W CN 2012072695W WO 2013139004 A1 WO2013139004 A1 WO 2013139004A1
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- eps bearer
- base station
- eps
- establish
- belongs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/32—Hierarchical cell structures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a method and a base station for establishing an Evolved Packet System (EPS). Background technique
- EPS Evolved Packet System
- CA Carrier Aggregation
- LTE Long Term Evolution
- CA technology has been adopted as a method for extending the EPS bandwidth in the Long Term Evolution (LTE) system.
- the main idea of CA technology is to aggregate multiple component carriers (CCs) into a larger bandwidth carrier 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 composed of five 2 Hz carriers, including carrier 1, carrier 2, carrier 3, carrier 4, and carrier 5. It can be understood that this aggregate carrier It may be continuous or discontinuous in the frequency domain.
- CAs can be divided into two types, one is 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 Mhz carrier, and the padding area is covered by the 3Ghz carrier. It can be seen that the 3Ghz carrier
- the coverage range is less 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, compared to the UE at the cell edge.
- the throughput of UEs transmitting data at the center of the cell will drop a lot.
- a relay station may be used on the cell network side to expand the coverage of the high frequency carrier, as shown in FIG.
- the technology expands the coverage structure of the high-frequency carrier network structure, and increases the coverage of the high-frequency carrier by increasing the data transmitted by the two RNs using the high-frequency carrier.
- inter-site CA inter-site CA
- the embodiments of the present invention provide a method for establishing an EPS bearer and a base station, so that the UE can implement carrier aggregation between different sites.
- comprising:
- the first base station to which the user equipment UE of the first EPS bearer based on the first component carrier CC belongs is determined to establish a second EPS bearer based on the second CC for the UE;
- the first base station initiates a process of establishing the second EPS bearer for the UE.
- a method of establishing an EPS payload comprising:
- the first base station to which the UE belongs is configured to establish a first EPS bearer based on the first CC, and the first EPS bearer is an EPS bearer between the first base station and the UE;
- the first base station instructs the second base station to establish a second EPS bearer based on the second CC, and the second EPS bearer is an EPS bearer between the second base station and the UE.
- a base station comprising:
- a base station comprising:
- an establishing unit configured to establish, by the user equipment UE, a first evolved packet system EPS bearer based on the first component carrier CC, where the first EPS bearer is an EPS bearer between the first base station and the UE to which the UE belongs;
- an indication unit configured to indicate that the second base station to which the UE belongs is configured to establish a second EPS bearer based on the second CC, and the second EPS bearer is an EPS bearer between the second base station and the UE to which the UE belongs.
- the first base station to which the UE belongs establishes a first EPS bearer based on the first CC for the UE, and establishes a second EPS bearer based on the second CC, where the first EPS bearer belongs to the UE.
- the process of establishing the second EPS bearer for the UE after the first base station to which the UE that is the first EPS bearer of the first CC is determined to establish the second EPS bearer based on the second CC.
- the UE can separately transmit data between the first base station and the second base station by using the two EPS bearers, so that the UE can aggregate different carrier transmission data from the first base station to which the UE belongs and the second base station to which the UE belongs, and realize different. Carrier aggregation between sites improves the throughput of data transmitted by the UE.
- FIG. 1 is a schematic diagram of a bandwidth structure used in the prior art to transmit data by using a CA technology
- FIG. 2 is a schematic diagram of different carrier coverage ranges in a prior art inter-band CA
- 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 establishing an EPS bearer according to an embodiment of the present invention
- FIG. 5 is a schematic structural diagram of a system for establishing an EPS bearer according to an embodiment of the present disclosure
- FIG. 6 is a schematic structural diagram of an apparatus for establishing an EPS bearer according to an embodiment of the present invention
- FIG. 7 is a schematic structural diagram of an apparatus for establishing an EPS bearer according to an embodiment of the present invention
- FIG. 8 is a schematic diagram of a method for establishing an EPS bearer according to an embodiment of the present invention
- FIG. 9 is a flowchart of a second embodiment of a method for establishing an EPS bearer according to an embodiment of the present invention.
- the UE In order to improve the throughput of the data transmitted by the UE, the UE needs to enable the UE to aggregate and transmit data from different carriers of the DeNB and the RN, that is, to aggregate carriers from different sites, where the station is a DeNB or an RN. Therefore, in the embodiment of the present invention, the first base station to which the UE belongs is configured to establish a first EPS bearer based on the first CC for the UE, and the second EPS bearer based on the second CC is established, where the first EPS bearer is the first base station and the UE to which the UE belongs.
- the EPS bearer is the EPS bearer between the second base station and the UE to which the UE belongs.
- the process of establishing the second EPS bearer for the UE after the first base station to which the UE that is the first EPS bearer of the first CC is determined to establish the second EPS bearer based on the second CC.
- the UE can separately transmit data between the first base station and the second base station by using the two EPS bearers, so that the UE can aggregate different carrier transmission data from the first base station to which the UE belongs and the second base station to which the UE belongs, and realize different. Carrier aggregation between sites improves the throughput of data transmitted by the UE.
- the station in this embodiment is a service node of a UE in a broad sense, and may be collectively referred to as a base station, and includes not only an eNB base station in a narrow sense but also a node capable of serving the UE, such as a relay station RN and a small base station.
- the DeNB to which the UE belongs in the embodiment of the present invention is the DeNB currently synchronized with the UE.
- 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 addition to the DeNB and the RN, there may be various small base stations such as a micro eNB (Pico eNB) and a home eNB (Home eNB). Therefore, the RN in the embodiment of the present invention is replaced by a micro eNB and a home eNB.
- the RN when the UE accesses two different base stations, the current multiple EPS bearers of the UE are respectively established on the DeNB and the micro eNB. Transmit different data for the UE.
- the above RN, Pico eNB and Home eNB may be collectively referred to as a small base station.
- the embodiment is not limited to a scenario of a heterogeneous network, and the first base station and the second base station may be two independent base stations that are not attached to each other.
- the DeNB to which the UE belongs and the RN to which the UE belongs are described as an example.
- the first scheme is an active initiation scheme, and the access network entity, such as the UE, the RN to which the UE belongs, or the DeNB to which the UE belongs, to the core network entity, such as a public data network gateway (PDN-GW), a mobility management entity (MME, Mobility Management Entity). Or the S-GW, Serving Gateway, initiates an EPS bearer setup request, and the core network entity receives the DeNB to which the UE belongs to establish a first EPS bearer based on the first CC and a second CC-based
- the two EPS bearers, the first EPS bearer is an EPS bearer between the DeNB and the UE to which the UE belongs, and the number of the EPS bearers is one or more.
- the second EPS bearer is an EPS bearer between the RN and the UE to which the UE belongs, and the number is one or more. Or, after receiving, by the core network, the first base station to which the UE that owns the first EPS bearer of the first CC determines that the second EPS bearer based on the second CC is established for the UE, The process of two EPS bearers. In this way, the UE can transmit data between the DeNB and the RN through two EPS bearers.
- the second scheme is an active setup scheme
- the DeNB to which the UE belongs determines to establish a first EPS bearer and a second EPS bearer for the UE
- the DeNB to which the UE belongs establishes a CC-based first EPS bearer and a CC-based second EPS bearer for the UE
- first The EPS bearer is an EPS bearer between the DeNB and the UE to which the UE belongs
- the number of the EPS bearers is one or more
- the second EPS bearer is the EPS bearer between the RN and the UE to which the UE belongs.
- the number is more than one; or the first base station to which the UE that owns the first EPS bearer of the first CC autonomously determines to establish the second EPS bearer based on the second CC, and initiates establishing the second for the UE The process of EPS bearer. In this way, the UE can transmit data between the DeNB and the RN through the two EPS bearers respectively.
- the DeNB establishes a radio data bearer (DRB) for the UE for the first EPS bearer to be established, and allocates a corresponding radio data bearer identifier (DRB ID).
- DRB radio data bearer
- the DeNB needs Each of the established EPS bearers establishes a corresponding DRB for the UE, and allocates a corresponding DRB ID. That is, for a UE, for example, between the UE and the core network, it is called an EPS bearer. Its corresponding between the UE and the DeNB is called DRB.
- establishing an EPS bearer for the UE by the eNB or the RN is equivalent to establishing a DRB for the UE. That is, when the first base station is described as establishing an EPS bearer for the UE, it means that the first base station establishes a DRB for the UE.
- the UE may also have the first EPS bearer with the associated DeNB or the second EPS bearer with the associated RN, but only through the first The EPS bearer or the second EPS bearer cannot satisfy the throughput of the UE transmitting data.
- the access network entity actively initiates a process of requesting to establish an EPS bearer or modifying an EPS bearer, or a process in which the DeNB to which the UE belongs to actively establish an EPS bearer.
- the process of establishing the EPS bearer if the UE does not have new service requirements other than the current service, the data transmitted by the first EPS bearer and the data transmitted by the second EPS bearer are established within a certain time.
- the sum of the quantities is equal to the amount of data transmitted by the unmodified first EPS bearer, or the amount of data transmitted by the unmodified second EPS bearer. If the network establishes a new service for the UE in the process of establishing the EPS bearer, the sum of the data amount of the data transmitted by the first EPS bearer and the data transmitted by the second EPS bearer is greater than the unmodified first. The amount of data transmitted by the EPS bearer is greater than the amount of data transmitted by the unmodified second EPS bearer.
- FIG. 4 is a flowchart of a method for establishing an EPS bearer according to an embodiment of the present disclosure, where the method includes: Step 401: The DeNB that the UE belongs to establishes a first EPS bearer based on the first CC, and the first EPS bearer is an EPS bearer between the DeNB and the UE to which the UE belongs, and the number is one or more.
- the UE transmits data between the first EPS bearer and the associated DeNB through the established first EPS bearer, and transmits data between the RRC and the RN through the established second EPS bearer.
- FIG. 5 is a schematic structural diagram of a system for establishing an EPS bearer according to an embodiment of the present invention, including: a UE, a DeNB to which the UE belongs, and an RN to which the UE belongs, where
- the DeNB to which the UE belongs is used to establish a first EPS bearer for the UE, where the first EPS bearer is
- the number of EPS bearers between the DeNB and the UE to which the UE belongs is one or more, indicating that the RN to which the UE belongs is the second EPS bearer for the UE, and the second EPS bearer is the EPS bearer between the RN and the UE to which the UE belongs, and the number is more than one. ;
- the RN to which the UE belongs is used to establish a second EPS bearer for the UE under the instruction of the DeNB to which the UE belongs.
- the system embodiment further includes an access network entity and a core network entity, where the access network entity is further configured to send an EPS bearer request message or modify an EPS bearer request message to the UE to the core network entity;
- the core network entity is configured to receive an EPS bearer request message or a modify EPS bearer request message sent by the access network entity, and instruct the DeNB to which the UE belongs to establish a first EPS bearer and a second EPS bearer for the UE.
- the DeNB to which the UE belongs is further used to determine to establish a first EPS bearer and a second EPS bearer.
- FIG. 6 is a schematic structural diagram of a device for establishing an EPS bearer according to an embodiment of the present invention.
- the device may be the base station mentioned in the foregoing embodiment, and includes: an establishing unit and an indicating unit, where
- An establishing unit configured to establish, by the user equipment UE, a first evolution component based on the first component carrier CC a group system EPS bearer, where the first EPS bearer is an EPS bearer between the first base station and the UE to which the UE belongs;
- an indication unit configured to indicate that the second base station to which the UE belongs is configured to establish a second EPS bearer based on the second CC, and the second EPS bearer is an EPS bearer between the second base station and the UE to which the UE belongs.
- the base station further includes a receiving unit, configured to receive, by the core network entity, an instruction to establish multiple EPS bearers based on multiple CCs for the UE, and the triggering setup unit establishes a first EPS bearer for the UE, and the trigger indication unit indicates The second base station establishes a second EPS bearer for the UE.
- a receiving unit configured to receive, by the core network entity, an instruction to establish multiple EPS bearers based on multiple CCs for the UE, and the triggering setup unit establishes a first EPS bearer for the UE, and the trigger indication unit indicates The second base station establishes a second EPS bearer for the UE.
- the base station further includes a determining unit, configured to autonomously determine to establish a first EPS bearer and a second EPS bearer for the UE, the trigger establishing unit establishes a first EPS bearer for the UE, and the trigger indication unit instructs the second base station to establish the UE The second EPS bearer.
- a determining unit configured to autonomously determine to establish a first EPS bearer and a second EPS bearer for the UE, the trigger establishing unit establishes a first EPS bearer for the UE, and the trigger indication unit instructs the second base station to establish the UE The second EPS bearer.
- FIG. 7 is a schematic structural diagram of a device for establishing an EPS bearer according to an embodiment of the present disclosure, where the device may be the base station mentioned in the foregoing embodiment, including a determining unit and an initiating unit, where
- a determining unit configured to determine, by the user equipment UE that owns the first evolved packet system EPS bearer based on the first component carrier CC, a second EPS bearer based on the second CC, and trigger the initiating unit; Establishing the process of the second EPS bearer for the UE.
- the base station further includes: a receiving unit, configured to receive, by the core network entity, an instruction for establishing, by the UE, multiple EPS bearers based on multiple CCs, and send the instruction to the determining unit;
- the determining unit is configured to determine, after receiving, from the receiving unit, an instruction to establish multiple EPS bearers based on multiple CCs for the UE, to establish a second EPS bearer based on the second CC.
- the UE and the DeNB to which the UE belongs have established the current first EPS bearer, and the UE adopts an active initiation scheme to establish an EPS bearer, assuming that the access network entity is the UE and the core network entity is PDN-GW.
- FIG. 8 is a flowchart of a first embodiment of a method for establishing an EPS bearer according to an embodiment of the present invention, including:
- Step 701 The UE sends an EPS tampering request to the PDN-GW.
- the UE or may also be an RN or a DeNB, initiates an E-RAB.
- E-UTRAN Radio Access Bearer E-UTRAN Radio Access Bearer
- Modify Request message request PDN GW, or S-GW or MME may modify the current single E-RAB of the UE to multiple EPS bearers. data transmission;
- Step 702 After receiving the EPS bearer modification request, the PDN-GW determines to modify the current first EPS bearer to the first EPS bearer and the second EPS bearer according to the state information value of the UE transmission data, for example, the QoS requirement, and determine the The first EPS bearer and the second EPS bearer are respectively set up nodes, that is, the first EPS bearer is determined to be established in the DeNB, the second EPS bearer is established in the RN, and the EPS bearer update request command is sent to the DeNB to which the UE belongs, carrying the indication modification information. ;
- Step 703 The DeNB that the UE belongs receives the EPS bearer update request command, and obtains information about the first EPS bearer and the second EPS bearer to be established.
- the DeNB determines to modify the previous EPS bearer to two new EPS bearers, one of which is established locally, and the other is established at the RN;
- Step 704 The DeNB that the UE belongs to establishes a first EPS bearer for the UE, that is, sends a radio resource control (RRC, Radio Resource Control) connection reconfiguration message to the UE, and carries information for reconfiguring the first EPS bearer;
- the information includes an identifier of the EPS bearer, an identifier of the established DRB and a logical channel identifier, and other access layer parameters.
- Step 705 After receiving the RRC connection reconfiguration message, the UE returns an RRC connection reconfiguration complete message to the DeNB to which the UE belongs after performing the establishment of the first EPS bearer according to the carried reconfiguration EPS bearer information and the DeNB to which the UE belongs.
- Step 706 The DeNB to which the UE belongs sends an EPS setup request message to the RN to which the UE belongs, for example, Establishing a request message for the E-RAB, carrying information to establish a second EPS bearer;
- Step 707 After receiving the EPS setup request message, the RN to which the UE belongs sends an RRC connection reconfiguration message to the UE, and carries the reconfigured second EPS bearer information.
- the information carried by the second EPS includes an identifier of the EPS bearer, an identifier of the established DRB and a logical channel identifier, and other access layer parameters;
- Step 708 After receiving the RRC connection reconfiguration message, the UE returns an RRC connection reconfiguration complete message to the RN to which the UE belongs after performing the second EPS bearer setup according to the carried the reconfigured second EPS bearer information.
- steps 704-705 and steps 706-708 may be performed simultaneously, or steps 706-708 may be performed first, and steps 704-705 may be performed, which are not limited herein.
- the PDN-GW may also not determine the respective setup nodes of the first EPS bearer and the second EPS bearer, but directly send an EPS bearer update request instruction to the DeNB, instructing the DeNB to perform the EPS bearer.
- the first EPS bearer and the second EPS bearer are modified, and in step 703, the established nodes of the first EPS bearer and the second EPS bearer are determined according to the state information of the UE transmission data by DeNodB, and the subsequent steps are performed.
- the DeNB needs to feed back to the PDN-GW its respective established nodes of the first EPS bearer and the second EPS bearer.
- the PDN-GW may also not modify the current first EPS bearer to the first EPS bearer and the second EPS bearer, but directly send the EPS carrying the UE identifier to DeNodB.
- Carrying the update request command in step 703, determining, by DeNodB, the current first EPS bearer to be modified into the first EPS bearer and the second EPS bearer, and the respective setup nodes, according to the state information value of the UE transmission data having the UE identifier. That is, the first EPS bearer is established at the DeNB, the second EPS bearer is established at the RN, and the subsequent steps are performed.
- the UE and the RN to which the UE belongs have established the current status.
- the two EPS bearers, the process is similar, and will not be described here.
- the UE and the RN to which the UE belongs have established the current second EPS bearer, and the DeNB to which the UE belongs is configured to establish an EPS bearer for the UE.
- FIG. 9 is a flowchart of a second embodiment of a method for establishing an EPS bearer according to an embodiment of the present disclosure, where the method includes:
- Step 801 The DeNB to which the UE belongs determines the load of the data transmitted by the UE to which the UE belongs to the RN sharing part of the UE, and therefore needs to establish a first EPS bearer for the UE.
- the DeNB to which the UE belongs Before the step, the DeNB to which the UE belongs has determined that the current second EPS bearer is established between the UE and the RN to which the UE belongs.
- the established first EPS bearer is a virtual EPS bearer, that is, the first EPS bearer is invisible in the core network;
- Step 802 The DeNB that the UE belongs to sends an RRC connection reconfiguration message to the UE, and carries the reconfiguration EPS bearer information, that is, the information of the first EPS bearer that needs to be established.
- the information of the first EPS bearer includes an identifier of the EPS bearer, and is correspondingly established. DRB identifier and logical channel identifier and other access layer parameters, etc.;
- the QoS parameter used by the first EPS bearer is the same as the QoS parameter used by the current second EPS bearer, where the identifier of the first EPS bearer and the identifier of the current second EPS bearer may be the same;
- Step 803 After receiving the RRC connection reconfiguration message, the UE returns an RRC connection reconfiguration complete message to the DeNB to which the UE belongs after performing the establishment of the first EPS bearer according to the carried reconfiguration EPS bearer information and the DeNB to which the UE belongs.
- the method further includes: performing a random access procedure between the UE and the DeNB to which the UE belongs, and establishing a synchronous connection between the UE and the DeNB to which the UE belongs; Step 804: The DeNB that the UE belongs to sends an EPS setup report message to the RN to which the UE belongs, and carries the identifier of the UE and the information that the first EPS bearer has been established.
- Step 805 After receiving the EPS setup report message, the RN to which the UE belongs sends an RRC connection reconfiguration message to the UE, and carries the second EPS bearer information that needs to be established.
- the information of the second EPS bearer includes an identifier of the EPS bearer, corresponding to Established DRB identifier and logical channel identifier and other access layer parameters, etc.;
- Step 806 After receiving the RRC connection reconfiguration message, the UE returns an RRC connection reconfiguration complete message to the RN after performing the second EPS bearer setup according to the carried the reconfigured second EPS bearer information and the RN to which the UE belongs.
- the current second EPS bearer may be directly used as the second EPS bearer, that is, the current second EPS bearer is not modified.
- the parameters are configured, and step 806 and step 807 are not executed, and details are not described herein again.
- the method provided by the embodiment of the present invention can improve the transmission data throughput of the cell edge UE managed by the cell to which the DeNB belongs, reduce the throughput difference between the cell center UE and the cell edge UE, and improve the transmission data performance between the UEs. Fairness.
- the present invention can be implemented by means of software plus necessary general hardware, and of course, can also be through hardware, but in many cases the former is a better implementation. .
- the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
- a hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
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Abstract
一种建立演进分组系统EPS承载的方法及装置,该方法包括:UE所属第一基站为UE建立基于第一CC的第一EPS承载,所述第一EPS承载为所述第一基站与UE之间的EPS承载;所述第一基站指示第二基站为UE建立基于第二CC的第二EPS承载,所述第二EPS承载为所述第二基站与UE之间的EPS承载。本发明使得UE实现聚合来自UE所属第一基站与UE所属第二基站的不同频段载波传输数据,提高UE传输数据的吞吐量。
Description
一种建立演进分组系统承载的方法及基站
技术领域
本发明涉及通信技术领域,特别涉及一种建立演进分组系统( EPS , Evolved Packet Sys tem ) 载的方法及基站。 背景技术
为了在通信系统中支持高达 lGbits/s的峰值数据速率传输,目前在长期演 进系统(LTE, Long Term Evolution ) 中, 已经采用载波汇聚(CA, Carrier Aggregation )技术作为扩展 EPS带宽的方法。 CA技术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 2( Hz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, 可以理解, 这集合载波在频域上可 以是连续的或非连续的。
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 CA下的不同载波覆盖范围示意图, 空白区域为 800Mhz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 )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 接续采用高频载波传输的数据, 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。 这里称之为不 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的不同载波传输数据, 提高 UE传 输数据的吞吐量, 增强 UE体验是一个亟待解决的问题。 发明内容
本发明实施例提供一种建立 EPS承载的方法及基站,使得 UE能够实现不 同站点间的载波汇聚。
所述技术方案是这样实现的:
一种建立演进分组系统 EPS 7|载的方法, 该方法包括:
拥有基于第一组成载波 CC的第一 EPS承载的用户设备 UE所属第一基站 确定为所述 UE建立基于第二 CC的第二 EPS承载;
所述第一基站发起为所述 UE建立所述第二 EPS承载的过程。
一种建立 EPS 载的方法, 该方法包括:
UE所属第一基站为 UE建立基于第一 CC的第一 EPS承载,所述第一 EPS 承载为所述第一基站与 UE之间的 EPS承载;
所述第一基站指示第二基站为 UE建立基于第二 CC的第二 EPS承载,所 述第二 EPS承载为所述第二基站与 UE之间的 EPS承载。
一种基站, 包括:
确定单元, 用于确定为拥有基于第一组成载波 CC 的第一演进分组系统 EPS承载的用户设备 UE建立基于第二 CC的第二 EPS承载,并触发发起单元; 所述发起单元, 用于发起为所述 UE建立所述第二 EPS承载的过程。 一种基站, 包括:
建立单元, 用于为用户设备 UE建立基于第一组成载波 CC的第一演进分 组系统 EPS承载, 所述第一 EPS承载为 UE所属第一基站与 UE之间的 EPS 承载;
指示单元,用于指示 UE所属第二基站为 UE建立基于第二 CC的第二 EPS 承载, 所述第二 EPS承载为 UE所属第二基站与 UE之间的 EPS承载。
本发明实施例所提供的方法及基站, 由 UE所属第一基站为 UE建立基于 第一 CC的第一 EPS承载及指示建立基于第二 CC的第二 EPS承载,第一 EPS 承载为 UE所属第一基站与 UE之间的 EPS承载,第二 EPS承载为 UE所属第 二基站与 UE之间的 EPS承载。 或者, 拥有基于第一 CC的第一 EPS承载的 UE所属第一基站确定为所述 UE建立基于第二 CC的第二 EPS承载后, 发起 为所述 UE建立所述第二 EPS承载的过程。 这样, 就使得 UE可以通过两个 EPS承载与所属第一基站和第二基站之间分别传输数据,使得 UE实现聚合来 自 UE所属第一基站与 UE所属第二基站的不同载波传输数据, 实现不同站点 间的载波汇聚, 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 4为本发明实施例提供的建立 EPS承载的方法流程图;
图 5为本发明实施例提供的建立 EPS承载的系统结构示意图;
图 6为本发明实施例提供的建立 EPS承载的装置一结构示意图; 图 7为本发明实施例提供的建立 EPS承载的装置二结构示意图; 图 8为本发明实施例提供的建立 EPS承载的方法具体实施例一的流程图; 图 9为本发明实施例提供的建立 EPS承载的方法具体实施例二的流程图。 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。
本发明实施例为了提高 UE传输数据的吞吐量, 就需要使得 UE实现聚合 分别来自 DeNB与 RN的不同载波收发数据,也就是使得汇聚来自不同站点的 载波, 在这里, 站点为 DeNB或 RN。 因此, 本发明实施例由 UE所属第一基 站为 UE建立基于第一 CC的第一 EPS承载及指示建立基于第二 CC的第二 EPS 承载, 第一 EPS承载为 UE所属第一基站与 UE之间的 EPS承载, 第二 EPS 承载为 UE所属第二基站与 UE之间的 EPS承载。 或者, 拥有基于第一 CC的 第一 EPS承载的 UE所属第一基站确定为所述 UE建立基于第二 CC的第二 EPS 承载后, 发起为所述 UE建立所述第二 EPS承载的过程。 这样, 就使得 UE可 以通过两个 EPS承载与所属第一基站和第二基站之间分别传输数据,使得 UE 实现聚合来自 UE所属第一基站与 UE所属第二基站的不同载波传输数据, 实 现不同站点间的载波汇聚, 提高 UE传输数据的吞吐量。 需要说明的是, 本实 施例中的站点是广义上的 UE的服务节点, 可统称为基站, 不仅包括狭义上的 eNB基站, 也包括中继站 RN和小型基站等能够服务于 UE的节点。 本发明实 施例中的 UE所属 DeNB就是与 UE当前同步的 DeNB。
在本发明实施例中, UE所属第一基站可以为 UE所属 DeNB, UE所属第 二基站可以为 UE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 )等各类小型基 站。 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当前的多个 EPS承载分别建 立在 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。 当然, 本实施例不限于异构网络的场景, 所 述第一基站和第二基站可以是 2个独立而彼此没有依附关系的基站。
在以下的实施例中, 将以 UE所属 DeNB和 UE所属 RN为例进行叙述。 在本发明实施例中, 具体有两种方案:
第一种方案为主动发起方案, 接入网实体, 比如 UE、 UE所属 RN或 UE 所属 DeNB向核心网实体, 比如公共数据网网关( PDN-GW )、 移动性管理实 体( MME, Mobility Management Entity )或月良务网关( S-GW, Serving Gateway ) , 发起 EPS承载建立请求,核心网实体接收到后指示 UE所属 DeNB为 UE建立 基于第一 CC的第一 EPS承载和基于第二 CC的第二 EPS承载, 第一 EPS承 载为 UE所属 DeNB与 UE之间的 EPS承载, 数量为一个以上, 第二 EPS承 载为 UE所属 RN与 UE之间的 EPS承载, 数量为一个以上。 或者, 核心网接 收到后指示已经拥有第一 CC的第一 EPS承载的 UE所属第一基站确定为所述 UE建立基于第二 CC的第二 EPS承载后, 发起为所述 UE建立所述第二 EPS 承载的过程。这样,使得 UE可以通过两个 EPS承载分别与 DeNB及 RN之间 传输数据。
第二种方案为主动建立方案, UE所属 DeNB确定为 UE建立第一 EPS承 载和第二 EPS承载, UE所属 DeNB为 UE建立基于 CC的第一 EPS承载和基 于 CC的第二 EPS承载, 第一 EPS承载为 UE所属 DeNB与 UE之间的 EPS 承载,数量为一个以上,第二 EPS承载为 UE所属 RN与 UE之间的 EPS承载,
数量为一个以上; 或者, 拥有第一 CC的第一 EPS承载的 UE所属第一基站自 主确定为所述 UE建立基于第二 CC的第二 EPS承载后, 发起为所述 UE建立 所述第二 EPS承载的过程。这样,使得 UE可以通过两个 EPS承载分别与 DeNB 和 RN之间传输数据。
具体地, DeNB会针对需要建立的第一 EPS承载为 UE建立一个无线数据 承载( DRB, Data Radio Bearer ) , 并分配一个对应的无线数据承载标识( DRB ID ) . 在具体实现中, DeNB针对需要建立的每个 EPS承载为 UE建立对应的 一个 DRB, 并分配一个对应的 DRB ID. 也就是说,对于一个 UE的 载而言, 在 UE与核心网之间, 将其称之为 EPS承载, 其对应的在 UE和 DeNB之间被 称之为 DRB。 在本发明实施例中, 将 eNB或 RN为 UE建立 EPS承载等价称 之为为 UE建立 DRB。 也就是, 当描述第一基站为 UE建立一个 EPS承载时, 就是表示第一基站为这个 UE建立一个 DRB。
在本发明实施例中的上述两种实施例中, UE也可以已经拥有了与所属 DeNB之间的第一 EPS承载或拥有了与所属 RN之间的第二 EPS承载, 但是, 只通过第一 EPS承载或第二 EPS承载无法满足 UE传输数据的吞吐量。 这时, 接入网实体主动发起请求建立 EPS承载或者修改 EPS承载的过程, 或者 UE 所属 DeNB进行主动建立 EPS承载的过程。 在上述 EPS承载的建立过程中, 如果 UE没有除当前业务之外的其他新的业务需求, 则在一定时间内, 所建立 的第一 EPS承载所传输数据和第二 EPS承载所传输数据的数据量之和等于未 修改的第一 EPS承载所传输的数据量, 或者为未修改的第二 EPS承载所传输 的数据量。如果在上述 EPS承载的建立过程中, 网络同时为 UE建立了新的业 务, 则所建立的第一 EPS承载所传输数据和第二 EPS承载所传输数据的数据 量之和大于未修改的第一 EPS承载所传输的数据量, 或者大于未修改的第二 EPS承载所传输的数据量。
图 4为本发明实施例提供的建立 EPS承载的方法流程图, 该方法包括:
步骤 401、 UE所属 DeNB为 UE建立基于第一 CC的第一 EPS承载, 所 述第一 EPS承载为 UE所属 DeNB与 UE之间的 EPS承载, 数量为一个以上; 步骤 402、 UE所属 DeNB指示 UE所属 RN为 UE建立基于第二 CC的第 二 EPS承载, 所述第二 EPS承载为 UE所属 RN与 UE之间的 EPS承载, 数 量为一个以上。
这样, UE就通过所建立的第一 EPS承载与所属 DeNB之间传输数据, 通 过所建立的第二 EPS承载与所属 RN之间传输数据。
图 5为本发明实施例提供的建立 EPS承载的系统结构示意图, 包括: UE、 UE所属 DeNB及 UE所属 RN, 其中,
UE所属 DeNB, 用于为 UE建立第一 EPS承载, 所述第一 EPS承载为
UE所属 DeNB与 UE之间的 EPS承载, 数量为一个以上, 指示 UE所属 RN 为 UE建立第二 EPS承载, 所述第二 EPS承载为 UE所属 RN与 UE之间的 EPS承载, 数量为一个以上;
UE所属 RN, 用于在 UE所属 DeNB的指示下为 UE建立第二 EPS承载。 在该系统实施例中,还包括接入网实体和核心网实体,其中,接入网实体, 还用于向核心网实体发送为 UE建立 EPS承载请求消息或修改 EPS承载请求 消息;
核心网实体, 用于接收接入网实体发送的建立 EPS承载请求消息或修改 EPS承载请求消息,指示 UE所属 DeNB为 UE建立第一 EPS承载及第二 EPS 承载。
在该系统实施例中, UE所属 DeNB还用于确定建立第一 EPS承载和第二 EPS承载。
图 6为本发明实施例提供的建立 EPS承载的装置一结构示意图, 该装置 可以为前面实施例中提到的基站, 包括: 建立单元和指示单元, 其中,
建立单元, 用于为用户设备 UE建立基于第一组成载波 CC的第一演进分
组系统 EPS承载, 所述第一 EPS承载为 UE所属第一基站与 UE之间的 EPS 承载;
指示单元,用于指示 UE所属第二基站为 UE建立基于第二 CC的第二 EPS 承载, 所述第二 EPS承载为 UE所属第二基站与 UE之间的 EPS承载。
在该基站中, 还包括接收单元, 用于接收由核心网实体发送的为 UE建立 基于多个 CC的多个 EPS承载的指令后, 触发建立单元为 UE建立第一 EPS 承载, 触发指示单元指示所述第二基站为 UE建立第二 EPS承载。
在该基站中,还包括确定单元,用于自主确定为 UE建立第一 EPS承载和 第二 EPS承载, 触发建立单元为 UE建立第一 EPS承载, 触发指示单元指示 所述第二基站为 UE建立第二 EPS承载。
图 7为本发明实施例提供的建立 EPS承载的装置二结构示意图, 该装置 可以为前面实施例中提到的基站, 包括确定单元和发起单元, 其中,
确定单元, 用于确定为拥有基于第一组成载波 CC 的第一演进分组系统 EPS承载的用户设备 UE建立基于第二 CC的第二 EPS承载,并触发发起单元; 所述发起单元, 用于发起为所述 UE建立所述第二 EPS承载的过程。 在该基站中, 还包括: 接收单元, 用于接收由核心网实体发送的为 UE建 立基于多个 CC的多个 EPS承载的指令后, 发送给所述确定单元;
所述确定单元,用于从接收单元接收到为 UE建立基于多个 CC的多个 EPS 承载的指令后, 确定建立基于第二 CC的第二 EPS承载。
图 6和图 7所示的装置实施例中各大暖具体可执行之前方法实施例所描述 的流程, 对这些流程此处不做赞述, 可参考之前的方法实施例。
以下举两个具体的实施例说明本发明实施例。
具体实施例一:
假设 UE与 UE所属 DeNB已经建立了当前第一 EPS承载, UE采用主动 发起方案进行 EPS承载的建立, 假设其中的接入网实体为 UE, 核心网实体为
PDN-GW。
图 8为本发明实施例提供的建立 EPS承载的方法具体实施例一的流程图, 包括:
步骤 701、 UE向 PDN-GW发送 EPS 载爹改请求;
在本步骤中, 具体地, UE, 或者也可以是 RN或 DeNB, 发起 E-RAB
( E-UTRAN无线接入承载, E-UTRAN Radio Access Bearer, )修改请求消息, 请求 PDN GW, 或者也可以是 S - GW或 MME将 UE当前的单一的 E-RAB 修改为多个 EPS承载进行数据传输;
步骤 702、 PDN-GW接收到该 EPS承载修改请求后,根据 UE传输数据的 状态信息值, 例如 QoS需求, 确定将当前第一 EPS承载修改为第一 EPS承载 和第二 EPS承载, 确定所述第一 EPS承载和第二 EPS承载各自的建立节点, 即确定将第一 EPS承载建立在 DeNB, 将第二 EPS承载建立在 RN, 并向 UE 所属 DeNB发送 EPS承载更新请求指令, 携带指示修改信息;
步骤 703、 UE所属 DeNB接收到该 EPS承载更新请求指令, 获取到要建 立第一 EPS承载和第二 EPS承载的信息;
在本步骤中, DeNB确定将之前的 EPS承载修改为两个新的 EPS承载其 中一个建立在本地, 另一个建立在 RN;
步骤 704、 UE所属 DeNB为 UE建立第一 EPS承载, 即向 UE发送无线 资源控制 (RRC, Radio Resource Control )连接重配置消息, 携带重配置第一 EPS承载的信息; 所述第一 EPS承载的信息包含 EPS承载的标识符, 对应建 立的 DRB的标识符和逻辑信道标识符以及其他接入层参数等。
步骤 705、 UE接收到该 RRC连接重配置消息后, 根据携带的重配置 EPS 承载信息与 UE所属 DeNB进行第一 EPS承载的建立后,向 UE所属 DeNB返 回 RRC连接重配置完成消息;
步骤 706、 UE所属 DeNB向 UE所属 RN发送 EPS建立请求消息, 例如
为 E-RAB建立请求消息, 携带要建立第二 EPS承载的信息;
步骤 707、 UE所属 RN接收到该 EPS建立请求消息后, 向 UE发送 RRC 连接重配置消息, 携带重配置的第二 EPS承载信息;
所述第二 EPS承载的信息包含 EPS承载的标识符,对应建立的 DRB的标 识符和逻辑信道标识符以及其他接入层参数等;
步骤 708、 UE接收到该 RRC连接重配置消息后, 根据携带的重配置的第 二 EPS承载信息与所属 RN进行第二 EPS承载的建立后,向 UE所属 RN返回 RRC连接重配置完成消息;
在该步骤之前, 如果 UE没有与所属 RN建立连接, 还需要进行随机接入 过程。
在该具体实施例中,步骤 704~705与步骤 706~708可以同时进行,也可以 先进行步骤 706~708, 再进行步骤 704~705, 这里不限制。
在该具体实施方式中, 在步骤 702中, PDN-GW也可以不确定第一 EPS 承载和第二 EPS承载各自的建立节点, 而是直接给 DeNB发送 EPS承载更新 请求指令, 指示 DeNB将 EPS承载修改为第一 EPS承载和第二 EPS承载, 在 步骤 703中,由 DeNodB根据 UE传输数据的状态信息确定第一 EPS承载和第 二 EPS承载各自的建立节点, 并进行后续步骤。 这里, DeNB需要向 PDN - GW反馈其确定的第一 EPS承载和第二 EPS承载各自的建立节点。
或者, 在该具体实施方式中, 在步骤 702中, PDN-GW也可以不确定将 当前第一 EPS承载修改为第一 EPS承载和第二 EPS承载,而是直接给 DeNodB 发送携带 UE标识的 EPS承载更新请求指令,在步骤 703中, 由 DeNodB根据 具有该 UE标识的 UE传输数据的状态信息值确定将当前第一 EPS承载修改为 第一 EPS承载和第二 EPS承载, 以及各自的建立节点, 即将第一 EPS承载建 立在 DeNB, 将第二 EPS承载建立在 RN, 并进行后续步骤。
在该具体实施方式中, 也可以假设 UE与 UE所属 RN已经建立了当前第
二 EPS承载, 过程类似, 这里不再赘述。
具体实施例二
假设 UE与 UE所属 RN已经建立了当前第二 EPS承载, UE所属 DeNB 采用主动建立方案为 UE进行 EPS承载的建立。
图 9为本发明实施例提供的建立 EPS承载的方法具体实施例二的流程图, 该方法包括:
步骤 801、 UE所属 DeNB确定由 UE所属 DeNB为 UE所属 RN分担部分 的 UE传输数据的负载, 因此需要为 UE建立第一 EPS承载;
在本步骤之前, UE所属 DeNB已经自主确定了 UE与 UE所属 RN之间 建立了当前第二 EPS承载;
在本步骤中, 所建立的第一 EPS承载为虚拟 EPS承载, 也就是在核心网 中该第一 EPS承载不可见;
步骤 802、 UE所属 DeNB向 UE发送 RRC连接重配置消息, 携带重配置 EPS承载信息, 即需要建立的第一 EPS承载的信息; 所述第一 EPS承载的信 息包含 EPS承载的标识符, 对应建立的 DRB的标识符和逻辑信道标识符以及 其他接入层参数等;
在本步骤中, 所建立的第一 EPS承载所采用的 QoS参数与当前第二 EPS 承载所采用的 QoS参数相同, 这里该第一 EPS承载的标识与当前第二 EPS承 载的标识可以相同;
步骤 803、 UE接收到该 RRC连接重配置消息后, 根据携带的重配置 EPS 承载信息与 UE所属 DeNB进行第一 EPS承载的建立后,向 UE所属 DeNB返 回 RRC连接重配置完成消息;
在该步骤中, 如果 UE与 UE所属 DeNB之前没有建立同步连接, 则在步 骤 803之前, 还包括: UE与 UE所属 DeNB之间进行随机接入过程, UE与 UE所属 DeNB建立同步连接;
步骤 804、 UE所属 DeNB向 UE所属 RN发送 EPS建立报告消息, 携带 UE的标识及已经建立第一 EPS承载的信息;
步骤 805、 UE所属 RN接收到该 EPS建立报告消息后, 向 UE发送 RRC 连接重配置消息, 携带需要建立的第二 EPS承载信息; 所述第二 EPS承载的 信息包含 EPS承载的标识符, 对应建立的 DRB的标识符和逻辑信道标识符以 及其他接入层参数等;
步骤 806、 UE接收到该 RRC连接重配置消息后, 根据携带的重配置的第 二 EPS承载信息与 UE所属 RN进行第二 EPS承载的建立后,向 RN返回 RRC 连接重配置完成消息。
在图 8所述的实施例中, 如果 UE和 UE所属 RN之间已经存在了当前第 二 EPS承载, 可以直接将当前第二 EPS承载作为第二 EPS承载, 即不修改当 前第二 EPS承载的配置参数,而不再执行步骤 806和步骤 807,这里不再赘述。
在该具体实施方式中, 也可以假设 UE与 UE所属 DeNB已经建立了当前 第一 EPS承载, 过程类似, 这里不再赘述。
采用本发明实施例提供的方法就可以提高 DeNB 所属小区管辖的小区边 缘 UE的传输数据吞吐量, 降低了小区中心 UE和小区边缘 UE之间的吞吐量 差异, 改善了 UE之间的传输数据性能的公平性。
通过以上的实施方式的描述,所属领域的技术人员可以清楚地了解到本发 明可借助软件加必需的通用硬件的方式来实现, 当然也可以通过硬件,但很多 情况下前者是更佳的实施方式。基于这样的理解, 本发明的技术方案本质上或 者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软 件产品存储在可读取的存储介质中, 如计算机的软盘, 硬盘或光盘等, 包括若 干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备 等)执行本发明各个实施例所述的方法。
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
1、 一种建立演进分组系统 EPS承载的方法, 其特征在于, 该方法包括: 拥有基于第一组成载波 CC的第一 EPS承载的用户设备 UE所属第一基站 确定为所述 UE建立基于第二 CC的第二 EPS承载;
所述第一基站发起为所述 UE建立所述第二 EPS承载的过程。
2、 如权利要求 1所述的方法, 其特征在于, 所述第一 EPS承载为所述第 一基站与 UE之间的 EPS承载;
所述第一基站发起为所述 UE建立所述第二 EPS承载的过程包括: 所述第一基站指示第二基站为 UE建立所述第二 EPS承载,所述第二 EPS 承载为所述第二基站与 UE之间的 EPS承载。
3、 如权利要求 2所述的方法, 其特征在于, 还包括:
所述第二基站在为 UE建立所述第二 EPS承载之前,如果所述第二基站与 所述 UE未建立连接, 所述第二基站与所述 UE建立连接。
4、 如权利要求 1所述的方法, 其特征在于, 所述第一 EPS承载为第二基 站与 UE之间的 EPS 7|载;
所述第一基站发起为所述 UE建立所述第二 EPS承载的过程包括: 所述第一基站为 UE建立所述第二 EPS承载, 所述第二 EPS承载为所述 第一基站与 UE之间的 EPS承载。
5、 如权利要求 1~4任一项所述的方法, 其特征在于, 在该方法之前, 还 包括:
所述第一基站接收由核心网实体发送的为 UE建立基于多个 CC 的多个 EPS承载的指令;
所述核心网实体为公共数据网网关 PDN-GW、 移动性管理实体 MME或 服务网关 S-GW。
6、 如权利要求 5所述的方法, 其特征在于, 在所述第一基站接收所述多 个 EPS承载的指令之前, 该方法还包括:
接入网实体向所述核心网实体发送为 UE建立 EPS承载的请求消息或修改 EPS承载的请求消息, 请求建立基于多个 CC的多个 EPS承载;
所述接入网实体为所述 UE、 第一基站或者第二基站。
7、 如权利要求 1~4任一项所述的方法, 其特征在于, 在该方法之前, 还 包括:
所述第一基站自主决定为 UE建立所述第二 EPS承载。
8、 如权利要求 1~4任一项所述的方法, 其特征在于, 所述 UE所属第一 基站修改拥有的基于第一 CC的第一 EPS承载;
所述修改后的第一 EPS承载传输数据量和第二 EPS承载传输数据量之和 等于或大于所述修改前的基于第一 CC的第一 EPS承载。
9、 如权利要求 8所述的方法, 其特征在于,
在所述第二 EPS承载建立之后, 所述修改后的第一 EPS承载的服务质量 参数和第二 EPS承载的服务质量参数分别等于: 在所述第二 EPS承载建立之 前未修改的第一 EPS承载的服务质量参数。
10、 如权利要求 1~4任一项所述的方法, 其特征在于, 所述第一基站为宏 基站,所述第二基站为依附于所述宏基站的中继站或宏基站覆盖范围内的小型 基站。
11、 一种建立演进分组系统 EPS承载的方法, 其特征在于, 该方法包括: 用户设备 UE所属第一基站为 UE建立基于第一组成载波 CC的第一 EPS 承载, 所述第一 EPS承载为所述第一基站与 UE之间的 EPS承载;
所述第一基站指示第二基站为 UE建立基于第二 CC的第二 EPS承载,所 述第二 EPS承载为所述第二基站与 UE之间的 EPS承载。
12、 如权利要求 11所述的方法, 其特征在于, 在该方法之前, 还包括: 所述第一基站接收由核心网实体发送的为 UE建立基于多个 CC 的多个 EPS承载的指令;
所述核心网实体为公共数据网网关 PDN-GW、 移动性管理实体 MME或 服务网关 S-GW。
13、 如权利要求 11所述的方法, 其特征在于, 在所述第一基站接收所述 多个 EPS承载的指令之前, 该方法还包括:
接入网实体向所述核心网实体发送为 UE建立 EPS承载的请求消息或修改 EPS承载的请求消息, 请求建立基于多个组成载波的多个 EPS承载;
所述接入网实体为所述 UE、 第一基站或者第二基站。
14、 如权利要求 11所述的方法, 其特征在于, 在该方法之前, 还包括: 所述第一基站自主决定为 UE建立所述第一 EPS承载和第二 EPS承载。
15、 如权利要求 11至 14中任一项所述的方法, 其特征在于, 所述第一基 站为宏基站,所述第二基站为依附于所述宏基站的中继站或宏基站覆盖范围内 的小型基站。
16、 如权利要求 11至 14中任一项所述的方法, 其特征在于, 还包括: 所述第二基站在为 UE建立基于第二组成载波的第二 EPS承载之前,如果 所述第二基站与所述 UE未建立连接, 则所述第二基站与所述 UE建立连接。
17、 一种基站, 其特征在于, 包括:
确定单元, 用于确定为拥有基于第一组成载波 CC 的第一演进分组系统 EPS承载的用户设备 UE建立基于第二 CC的第二 EPS承载,并触发发起单元; 所述发起单元, 用于发起为所述 UE建立所述第二 EPS承载的过程。
18、 如权利要求 17所述的基站, 其特征在于, 还包括: 接收单元, 用于 接收由核心网实体发送的为 UE建立基于多个 CC的多个 EPS承载的指令后, 发送给所述确定单元;
所述确定单元,用于从接收单元接收到为 UE建立基于多个 CC的多个 EPS 承载的指令后, 确定建立基于第二 CC的第二 EPS承载。
19、 一种基站, 其特征在于, 包括:
建立单元, 用于为用户设备 UE建立基于第一组成载波 CC的第一演进分 组系统 EPS承载, 所述第一 EPS承载为 UE所属第一基站与 UE之间的 EPS 承载;
指示单元,用于指示 UE所属第二基站为 UE建立基于第二 CC的第二 EPS 承载, 所述第二 EPS承载为 UE所属第二基站与 UE之间的 EPS承载。
20、 如权利要求 19所述的基站, 其特征在于,
还包括接收单元, 用于接收由核心网实体发送的为 UE建立基于多个 CC 的多个 EPS承载的指令后, 触发建立单元为 UE建立第一 EPS承载, 触发指 示单元指示所述第二基站为 UE建立第二 EPS承载。
21、 如权利要求 19所述的基站, 其特征在于, 还包括:
确定单元, 用于自主确定为 UE建立第一 EPS承载和第二 EPS承载, 触 发建立单元为 UE建立第一 EPS承载, 触发指示单元指示所述第二基站为 UE 建立第二 EPS承载。
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