AU2016304949A1 - Data bearer migration method, apparatus, and evolved node B - Google Patents

Data bearer migration method, apparatus, and evolved node B Download PDF

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AU2016304949A1
AU2016304949A1 AU2016304949A AU2016304949A AU2016304949A1 AU 2016304949 A1 AU2016304949 A1 AU 2016304949A1 AU 2016304949 A AU2016304949 A AU 2016304949A AU 2016304949 A AU2016304949 A AU 2016304949A AU 2016304949 A1 AU2016304949 A1 AU 2016304949A1
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bearer
migrated
menb
bearers
prbs
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AU2016304949A
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Na LIU
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1221—Wireless traffic scheduling based on age of data to be sent
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Disclosed is a data bearer migration method. The method comprises: acquiring the number M of residual resources in an MeNB, the number S of residual resources in an SeNB, and the sum N of resources currently occupied by all bearers established by a user equipment (UE); determining a to-be-migrated bearer according to M, S, and N; and migrating the to-be-migrated bearer from the MeNB to the SeNB. Also disclosed is a data bearer migration apparatus. The apparatus comprises: an information acquisition module, configured to acquire the number M of residual resources in an MeNB, the number S of residual resources in an SeNB, and the sum N of resources currently occupied by all bearers established by a UE; a to-be-migrated bearer determination module, configured to determine a to-be-migrated bearer according to M, S, and N; and a bearer migration module, configured to migrate the to-be-migrated bearer from the MeNB to the SeNB.

Description

Data Bearer Migration Method, Apparatus, and Evolved Node B
Technical Field
The present application relates to the field of mobile communications, and more particularly to a data bearer migration method, apparatus and system.
Background
The International Telecommunications Union (ITU) makes a very severe requirement on the performance of a next generation mobile communication system. For example, a maximum system transmission bandwidth is required to reach 100MHz, and peak rates of uplink-downlink data transmission are required to reach 1G bps and 500M bps respectively. Moreover, system average spectral efficiency, particularly edge spectral efficiency, is highly demanded. In order to better make an existing Long Term Evolution (LTE) standard compatible, to reduce the complexity of standardized operations, and to support a flexible application scenario, the 3rd Generation Partnership Project (3GPP) introduces a Dual Connectivity (DC) technology.
The DC technology refers to: radio resources provided by at least two different Evolved Nodes B (eNBs) may be used for a specified User Equipment (UE), these eNBs are connected in a non-ideal back way. Moreover, each eNB in a DC is different for a UE in function and also variable for different UEs. Herein, an eNB interacting signaling with a core network in the DC is a Master Evolved Node B (MeNB), and a non-MeNB for providing additional resources is a Secondary Evolved Node B (SeNB); serving cells belonging to the MeNB in the DC are a Master Cell Group (MCG), and serving cells belonging to the SeNB are a Secondary Cell Group (SCG); and a bearer only using MeNB resources in the DC is an MCG bearer, a bearer only using SeNB resources is an SCG bearer, and a bearer simultaneously using MeNB and SeNB resources is a segmented bearer. A key technical point of the DC is: determining bearer configurations on the MeNB and the SeNB, herein a 3rd Generation Partnership Project-ReleaseS (3GPP R8) or 3rd Generation Partnership Project-Release9 (3GPP R9) protocol only describes bear configurations of a UE under a single serving cell, and in the related art, management of a bearer under a single serving cell is only described. However, bearer configurations on the SeNB are new contents introduced by a DC function. In a current protocol or related art, bearer configurations on the SeNB are not clearly specified.
Summary
In view of this, the embodiments of the present invention disclose a data bearer migration method, apparatus and system, used to fill in a bearer configuration function on an SeNB under a DC function, thereby improving the utilization efficiency of spectral resources, improving the data service throughput of a user, improving system performance, and improving the experience of the user.
According to one aspect, an embodiment of the present invention discloses a data bearer migration method. The method includes: acquiring a number Μ (M is a natural number) of residual resources in an MeNB, a number S (S is a natural number) of residual resources in an SeNB, and acquiring a sum N (N is a natural number) of resources occupied by a current UE based on all bearers established by the UE; determining a to-be-migrated bearer based on M, S and N; and migrating the to-be-migrated bearer from the MeNB to the SeNB.
In an exemplary embodiment, the step of determining a to-be-migrated bearer based on M, S andN includes: determining a bearer, occupying fewest Physical Resource Blocks (PRBs), of the UE on the MeNB as the to-be-migrated bearer when N is greater than or equal to S; determining all bearers of the UE on the MeNB as to-be-migrated bearers when N is less than N and S-N is greater than M; and determining a to-be-migrated bearer based on a number of PRBs occupied by a bearer of the UE on the MeNB when N is less than S and S-N is less than or equal to M.
In an exemplary embodiment, the step of determining a to-be-migrated bearer based on a number of PRBs occupied by a bearer of the UE on the MeNB includes: acquiring an adjustment coefficient, the adjustment coefficient being S/(M+N+S); determining an adjustment reference based on N and the adjustment coefficient, the adjustment reference being N*S/(M+N+S); and sorting all bearers of the UE on the MeNB in an ascending order based on a difference value between the occupied bearer and the adjustment reference, and determining a bear ranked first as the to-be-migrated bearer.
In an exemplary embodiment, when there are multiple bearers, occupying fewest PRBs, of the UE on the MeNB or being ranked first bearers, a bearer with a maximum delay or a lowest basic service priority or a service allocation and blocking priority is selected as the to-be-migrated bearer.
According to another aspect, an embodiment of the present invention discloses a data bearer migration apparatus. The apparatus includes: an information acquisition module, configured to acquire a number M of residual resources in an MeNB, a number S of residual resources in an SeNB, and acquire a sum N of resources occupied by a UE based on all bearers established by the UE; a to-be-migrated bearer determination module, configured to determine a to-be-migrated bearer according to M, S and N; and a bearer migration module, configured to migrate the to-be-migrated bearer from the MeNB to the SeNB.
Meanwhile, an embodiment of the present invention discloses an eNB, including the above-mentioned data bearer migration apparatus.
According to the method, apparatus and eNB disclosed in the embodiments of the present invention, available resources of an MeNB and an SeNB are taken into overall consideration, and a specific bearer is migrated to the SeNB. Thus, the problem of inter-eNB excess load is effectively avoided. Meanwhile, spectral resources can be fully and effectively utilized, the data service throughput of a user is improved, system performance is improved, and the served experience of the user under an LTE system is enhanced.
Brief Description of Drawings FIG. 1 is a flow diagram of a data bearer migration method according to an embodiment of the present invention. FIG. 2 is an implementation logic diagram of the data bearer migration method according to an embodiment of the present invention. FIG. 3 is an apparatus diagram for the data bearer migration method according to an embodiment of the present invention. FIG. 4 is an eNB according to an embodiment of the present invention.
Detailed Description
In the embodiments of the present invention, an eNB acquires the number M of residual resources in an MeNB, the number S of residual resources in an SeNB, and the sum N of resources occupied currently according to all bearers established by a UE, determines a to-be-migrated bearer according to M, S and N, and migrates the to-be-migrated bearer from the MeNB to the SeNB. Thus, the problem of inter-eNB excess load is effectively avoided. Meanwhile, spectral resources can be fully and effectively utilized, the data service throughput of a user is improved, system performance is improved, and the served experience of the user under an LTE system is enhanced.
The main implementation principle, specific implementation manner and achievable beneficial effects of the solution disclosed in the present invention will be elaborated below in conjunction with the drawings in detail.
Embodiment 1
The embodiment 1 of the present invention provides a data bearer migration method. As shown in FIG. 1, the secondary carrier de-configuration method includes the steps as follows.
In step 101, the number M of residual resources in an MeNB, the number S of residual resources in an SeNB and the sum N of resources occupied currently according to all bearers established by a UE are acquired. in step 102, a to-be-migrated bearer is determined according to M, S and N.
In step 103, the to-be-migrated bearer is migrated from the MeNB to the SeNB.
Herein, as shown in FIG. 2, the process of determining a to-be-migrated bearer according to M, S andN in step 102 includes: determining a bearer, occupying fewest PRBs, of a current UE on the MeNB as a to-be-migrated bearer when N is greater than or equal to S; determining all bearers of the current UE on the MeNB as to-be-migrated bearers when N is less than N and S-N is greater than M; and determining the number of PRBs occupied by a bearer of the current UE on the MeNB as a to-be-migrated bearer when N is less than S and S-N is less than or equal to M.
In the embodiment, the operation that the number of PRBs occupied by a bearer of the current UE on the MeNB is determined as a to-be-migrated bearer may include: an adjustment coefficient is acquired, the adjustment coefficient is S/(M+N+S); an adjustment reference is determined according to N and the adjustment coefficient, the adjustment reference is N*S/(M+N+S); and all bearers of the current UE on the MeNB are sorted in an ascending order according to a difference value between the occupied bearer and the adjustment reference, and the bearer ranked first is determined as the to-be-migrated bearer.
In the embodiment, when there are multiple bearers, occupying fewest PRBs, of the current UE on the MeNB or being ranked first, a bearer with a maximum delay or a lowest basic service priority or a lowest service allocation and blocking priority may be selected as the to-be-migrated bearer.
The solution in an embodiment of the present invention will be described below by means of specific examples in detail.
Example 1:
Current cell downlink bandwidths of an MeNB and an SeNB are lOORBs, a UE establishes three bearers currently on the MeNB, namely QCI9, QCI7 and QCI4, a Modulation and Coding Scheme (MCS) of the UE is 12, and rates of the three bearers are 8kps, 64kps and 256*8kps respectively.
In S101, the MeNB determines the sum N of PRBs occupied by the current UE according to the three bearers established by the UE is 13, the number M of residual PRBs in the MeNB is 70, and the number S of residual PRBs acquired by the MeNB in the SeNB is 100.
In SI 02, the MeNB determines all bearers of the current UE on the MeNB as to-be-migrated bearers when N is less than S and (S-N) is greater than M.
In SI03, the MeNB migrates all bearers of the current UE on the MeNB from the MeNB to the SeNB.
Example 2:
Current cell downlink bandwidths of an MeNB and an SeNB are lOORBs, a UE establishes three bearers currently on the MeNB, namely QC19, QCI4 and QCI3, an MCS of the UE is 16, and rates of the three bearers are 8kps, 64kps and 256*8kps respectively.
In S201, the MeNB determines the sum N=T5 of PRBs occupied by the current UE according to all bearers established by the UE, the number M of residual PRBs in the MeNB is 70, and the number S of residual PRBs in the SeNB is 80.
In S202, when N is less than S, and (S-N) is less than M, the current UE currently establishes three bearers namely QCI9, QC14 and QCI3, rates thereof are 8kps, 64kps and 256*8kps respectively. Because a current MCS of the UE is 16, the MeNB may determine PRB resources needing to be occupied by the three bearers according to a relevant protocol as that: the bearer QCI9 needs to occupy 1RB, the bearer QCI4 needs to occupy 7RBs, and the bearer QCI3 needs to occupy 7RBs. The sum of PRB resources occupied by all bearers of the current UE on the MeNB is 15RB.
An adjustment coefficient S/(M+N+S) is 80/165.
An adjustment reference N*S/(M+N+S) is 7.27. A difference value between the bearer occupied by the bearer QCI4 of the current UE on the MeNB and the adjustment reference is 0.27, a difference value between the bearer occupied by QCI3 and the adjustment reference is 0.27, a difference value between the bearer occupied by QCI9 and the adjustment reference is 6.27, and the difference values between the bearer occupied by QCI3 and QCI4 and the adjustment reference are the same. However, because the delay of QCI4 is larger than that of QCI3, QC14 is preferred as a to-be-migrated bearer.
In S203, the MeNB migrates the to-be-migrated bearer from the MeNB to the SeNB.
Example 3:
Current cell downlink bandwidths of an MeNB and an SeNB are lOORBs, a UE establishes four bearers currently on the MeNB namely QCI9, QCI4, QC13 and QCI2, an MCS of the UE is 16, and rates of the four bearers are 8kps, 256*8kps, 256*8kps and 256*8kps respectively.
In S301, the MeNB determines the sum N=22 of PRBs occupied by the current UE according to all bearers established by the UE, the number M of residual PRBs in the MeNB is 80, and the number S of residual PRBs in the SeNB is 22.
In S302, the MeNB determines a bearer, occupying fewest PRBs, of the current UE on the MeNB as a to-be-migrated bearer according to NAS. The UE currently establishes four bearers namely QCI9, QCI4, QCI3 and QCI2, rates thereof are 8kps, 256*8kps, 256*8kps and 256*8kps respectively. Because a current MCS of the UE is 16, PRB resources needing to be occupied by the four bearers may be determined according to a relevant protocol as that: the bearer QC19 needs to occupy 1RB, the bearer QCI4 needs to occupy 7RBs, the bearer QC13 needs to occupy 7RBs, and the bearer QCI2 needs to occupy 7RBs. Therefore, the bearer QCI9 occupying fewest PRBs is currently selected as a to-be-migrated bearer.
In S303, the MeNB migrates the to-be-migrated bearer from the MeNB to the SeNB.
Embodiment 2:
The embodiment 2 of the present invention provides a data bearer migration apparatus. As shown in FIG. 3, the apparatus includes: an information acquisition module, configured to acquire the number M of residual resources in an MeNB, the number S of residual resources in an SeNB, and the sum N of resources occupied by a current UE according to all bearers established by the UE; a to-be-migrated bearer determination module, configured to determine a to-be-migrated bearer according to M, S and N; and a bearer migration module, configured to migrate the to-be-migrated bearer from the MeNB to the SeNB.
In the embodiment, the to-be-migrated bearer determination module may be configured to: determine a bearer, occupying fewest PRBs, of a current UE on the MeNB as the to-be-migrated bearer when N is greater than or equal to S; determine all bearers of the current UE on the MeNB as to-be-migrated bearers when N is less than N and S-N is greater than M; and determine a to-be-migrated bearer based on the number of PRBs occupied by a bearer of the current UE on the MeNB when N is less than S and S-N is less than or equal to M.
In the embodiment, the to-be-migrated bearer determination module may be configured to: acquire an adjustment coefficient, the adjustment coefficient being S/(M+N+S); determine an adjustment reference according to N and the adjustment coefficient, the adjustment reference being N*S/(M+N+S); and sort all bearers of the current UE on the MeNB in an ascending order according to a difference value between the occupied bearer and the adjustment reference, and determine a bear ranked first as the to-be-migrated bearer.
Embodiment 3:
The present embodiment discloses an eNB. As shown in FIG. 4, the eNB includes the data bearer migration apparatus.
The embodiment of the present invention also provides a computer-readable storage medium which stores computer-executable instructions. The computer-executable instructions are used to execute the method in the above-mentioned embodiment.
The embodiment of the present invention also provides an eNB which includes a storage and at least one processor, herein the storage stores instructions executed by the processor. The instructions are used to execute the method in the above-mentioned embodiment.
By the description of the specific implementation mode, the technical means and effects used by the present application to achieve a predetermined purpose may be understood more deeply and specifically. However, the appended drawings are only used for reference and description, and not used to limit the present invention. Meanwhile, the embodiments and the features in the embodiments may be combined mutually without conflicts.
Those skilled in the art shall understand that an embodiment of the present invention may be provided as a method or a computer program product. Thus, an embodiment of the present invention may be a hardware embodiment, a software embodiment or an embodiment integrating software and hardware. Moreover, an embodiment of the present invention may be a computer program product implemented on one or more computer available storage media (including, but are not limited to, a disk memory, an optical memory and the like) containing computer available program codes therein may be used in an embodiment of the present invention.
The present invention is described with reference to flowcharts and/or block diagrams of the method, the device (system) and the computer program product according to the embodiments of the present invention. It will be appreciated that each flow and/or block in the flowcharts and/or the block diagrams and a combination of the flows and/or the blocks in the flowcharts and/or the block diagrams may be implemented by computer program instructions. These computer program instructions may be provided to a general computer, a dedicated computer, an embedded processor or a processor of another programmable data processing device to generate a machine, such that an apparatus for implementing functions designated in one or more flows of the flowcharts and/or one or more blocks of the block diagrams is generated via instructions executed by computers or processors of other programmable data processing devices.
These computer program instructions may also be stored in computer readable memory capable of guiding computers or other programmable data processing devices to work in a specific mode, such that a manufactured product including an instruction apparatus is generated via the instructions stored in the computer readable memory, and the instruction apparatus implements the functions designated in one or more flows of the flowcharts and/or one or more blocks of the block diagrams.
These computer program instructions may also be loaded onto computers or other programmable data processing devices, such that processing implemented by a computer is generated by executing a series of operation steps on the computers or the other programmable devices, and therefore the instructions executed on the computers or the other programmable devices provide steps for implementing the functions designated in one or more flows of the flowcharts and/or one or more blocks of the block diagrams.
The above is only the illustrative embodiments of the present invention and not intended to limit the protection scope of the present invention.
Industrial Applicability
According to the method, apparatus and eNB disclosed in the embodiments of the present invention, available resources of an MeNB and an SeNB are taken into overall consideration, and a specific bearer is migrated to the SeNB. Thus, the problem of inter-eNB excess load is effectively avoided. Meanwhile, spectral resources can be fully and effectively utilized, the data service throughput of a user is improved, system performance is improved, and the served experience of the user under an LTE system is enhanced.

Claims (11)

  1. What we claim is:
    1. A data bearer migration method, comprising: acquiring a number M of residual resources in a Master Evolved Node B (MeNB), a number S of residual resources in a Secondary Evolved Node B (SeNB), and a sum N of resources occupied by all bearers established by a User Equipment (UE); determining a to-be-migrated bearer based on M, S, and N; and migrating the to-be-migrated bearer from the MeNB to the SeNB.
  2. 2. The method according to claim 1, wherein the resources are Physical Resource Blocks (PRBs).
  3. 3. The method according to claim 2, wherein determining a to-be-migrated bearer based on M, S and N comprises: determining a bearer, occupying fewest PRBs, of the UE on the MeNB as the to-be-migrated bearer when N is greater than or equal to S; determining all bearers of the UE on the MeNB as to-be-migrated bearers when N is less than N and S-N is greater than M; and determining a to-be-migrated bearer based on a number of PRBs occupied by a bearer of the UE on the MeNB when N is less than S and S-N is less than or equal to M.
  4. 4. The method according to claim 3, wherein determining a to-be-migrated bearer based on a number of PRBs occupied by a bearer of the UE on the MeNB comprises: acquiring an adjustment coefficient, wherein the adjustment coefficient is S/(M+N+S); determining an adjustment reference based on N and the adjustment coefficient, wherein the adjustment reference is N*S/(M+N+S); and sorting all bearers of the UE on the MeNB in an ascending order based on a difference value between the occupied bearer and the adjustment reference, and determining a bearer ranked first as the to-be-migrated bearer.
  5. 5. The method according to claim 4, wherein when there are a plurality of bearers, occupying fewest PRBs, of the UE on the MeNB or being ranked first, a bearer with a maximum delay or a lowest basic service priority or a lowest service allocation and blocking priority is selected as the to-be-migrated bearer.
  6. 6. A data bearer migration apparatus, comprising: an information acquisition module, configured to acquire a number M of residual resources in a Master Evolved Node B (MeNB), a number S of residual resources in a Secondary Evolved Node B (SeNB), and a sum N of resources occupied currently by all bearers established by a User Equipment (UE); a to-be-migrated bearer determination module, configured to determine a to-be-migrated bearer based on M, S and N; and a bearer migration module, configured to migrate the to-be-migrated bearer from the MeNB to the SeNB.
  7. 7. The apparatus according to claim 6, wherein the to-be-migrated bearer determination module is configured to: determine a bearer, occupying fewest Physical Resource Blocks (PRBs), of the UE on the MeNB as the to-be-migrated bearer when N is greater than or equal to S; determine all bearers of the UE on the MeNB as to-be-migrated bearers when N is less than N and S-N is greater than M; and determine a to-be-migrated bearer based on a number of PRBs occupied by a bearer of the UE on the MeNB when N is less than S and S-N is less than or equal to M.
  8. 8. The apparatus according to claim 7, wherein the to-be-migrated bearer determination module is configured to: acquire an adjustment coefficient, wherein the adjustment coefficient is S/(M+N+S); determine an adjustment reference based on N and the adjustment coefficient, wherein the adjustment reference is N*S/(M+N+S); and sort all bearers of the UE on the MeNB in an ascending order based on a difference value between the occupied bearer and the adjustment reference, and determine a bear ranked first as the to-be-migrated bearer.
  9. 9. The apparatus according to claim 7 or 8, wherein the to-be-migrated bearer determination module is configured to: select, when there are a plurality of bearers, occupying fewest PRBs, of the UE on the MeNB or being ranked first, a bearer with a maximum delay or a lowest basic service priority or a lowest service allocation and blocking priority as the to-be-migrated bearer.
  10. 10. An Evolved Node B (eNB), comprising the data bearer migration apparatus according to any one of claims 6 to 9.
  11. 11. A computer-readable storage medium, storing computer-executable instructions, which are used to execute the method according to any one of claims 1 to 5.
AU2016304949A 2015-08-12 2016-02-14 Data bearer migration method, apparatus, and evolved node B Abandoned AU2016304949A1 (en)

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CN201510493886.2 2015-08-12
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CN103731883B (en) * 2014-01-20 2017-06-09 中国联合网络通信集团有限公司 A kind of method and device of load balancing
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