WO2011020345A1 - Procédé et dispositif de sélection de porteuses - Google Patents

Procédé et dispositif de sélection de porteuses Download PDF

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Publication number
WO2011020345A1
WO2011020345A1 PCT/CN2010/072693 CN2010072693W WO2011020345A1 WO 2011020345 A1 WO2011020345 A1 WO 2011020345A1 CN 2010072693 W CN2010072693 W CN 2010072693W WO 2011020345 A1 WO2011020345 A1 WO 2011020345A1
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WO
WIPO (PCT)
Prior art keywords
carrier
aggregation
base station
module
new
Prior art date
Application number
PCT/CN2010/072693
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English (en)
Chinese (zh)
Inventor
魏巍
Original Assignee
中兴通讯股份有限公司
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Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2011020345A1 publication Critical patent/WO2011020345A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to the field of communications, and in particular, to a carrier selection method and apparatus.
  • carrier aggregation is proposed to effectively implement current wireless communication. Greater bandwidth is supported in the system.
  • Carrier aggregation is a key technology for supporting larger bandwidth in future wireless communication systems. It aggregates different carriers to form a carrier with a larger bandwidth, and supports a user with more capabilities on the aggregated bandwidth (User Equipment, Called UE), for example: 3 ⁇ 4 port, the bandwidth of more than 100 MHz in the Long-Term Evolution Advance (LTE-Advanced) system.
  • User Equipment Called UE
  • 3 ⁇ 4 port the bandwidth of more than 100 MHz in the Long-Term Evolution Advance (LTE-Advanced) system.
  • the carrier aggregation discussed in the current LTE-Advanced does not take into account the impact of inter-cell interference that plays an important role in inter-cell client throughput and average client throughput. If the aggregated carrier part suffers severe inter-cell interference, then Even if a larger bandwidth is obtained, the throughput and rate performance of the UE using the partially aggregated carrier are severely degraded due to severe inter-cell interference, thereby eliminating the benefits of carrier aggregation. An effective solution has not been proposed for the problem that the throughput and rate performance of the UE of the aggregated carrier are seriously degraded due to the fact that the inter-cell interference is not considered in the carrier aggregation in the related art.
  • the present invention has been made in view of the problem that the throughput and rate performance of a user terminal of an aggregated carrier is seriously degraded due to the fact that inter-cell interference is not considered in carrier aggregation.
  • the main object of the present invention is to provide a carrier selection scheme, Solve the above problem.
  • a carrier selection method is provided.
  • the carrier selection method includes: the base station determines the carrier aggregation information, where the carrier aggregation information includes: a size of a carrier capable of participating in carrier pre-aggregation, a bandwidth capability of the UE, and a new set of carrier pre-aggregation; Determined size from carrier prepolymerization In the new set, the carrier is selected to form a carrier set, and the pre-aggregation is completed; the base station selects the carrier to complete the aggregation from the set of carriers participating in the pre-aggregation according to the bandwidth capability of the UE and the determined size.
  • the determining, by the base station, the size of the carrier capable of participating in carrier pre-aggregation comprises: determining, by the base station, the size of the carrier capable of participating in carrier pre-aggregation according to all supported bandwidth types and bandwidth capabilities of the UE.
  • the determining, by the base station, the new set number of carrier pre-aggregation comprises: determining, by the base station, a new set of carrier pre-aggregation according to the bandwidth capability of the UE.
  • the base station selects a carrier from the set of carriers participating in the pre-aggregation according to the bandwidth capability of the UE and the determined size, and the aggregation includes: determining, by the base station, whether the selected carrier satisfies the bandwidth capability of the UE; if the judgment result is yes, The base station performs aggregation processing on the selected carrier.
  • the method further includes: if the determination result is negative, the base station selects a new carrier from other carriers that do not participate in the pre-aggregation; After the carrier and the pre-aggregated part of the carrier are aggregated to meet the bandwidth capability of the user, the selected new carrier and part are aggregated; otherwise, the base station releases the component carrier that has been selected for pre-aggregation, and does not participate in the pre-polymerization. Select a new carrier on the other carriers to re-carrier aggregation.
  • a carrier selection device is provided.
  • the carrier selection apparatus includes: a determining module, configured to determine carrier aggregation information, where the carrier aggregation information includes: a size of a carrier capable of participating in carrier pre-aggregation, a bandwidth capability of a client, and a new set of carrier pre-aggregation; a selecting module, configured to select a carrier forming carrier set from a new set of carrier pre-aggregation according to a cell interference condition and a size determined by the determining module, to complete pre-polymerization; and an aggregation module, configured to determine, according to a bandwidth capability of the user end, and a determining module The size is selected from the set of carriers participating in the pre-aggregation selected by the first selection module for aggregation.
  • the determining module comprises: a first determining submodule, configured to determine a size of a carrier participating in carrier pre-aggregation according to all supported bandwidth types and bandwidth capabilities of the UE.
  • the determining module comprises: a second determining submodule, configured to determine a new set of carrier pre-aggregation according to the bandwidth capability of the UE.
  • the foregoing apparatus further includes: a determining module, configured to determine that the carrier selected by the aggregation module is Whether the bandwidth capability of the user end is satisfied; the processing module is configured to perform aggregation processing on the carrier selected by the aggregation module if the judgment result of the determination module is yes.
  • the foregoing apparatus further includes: a second selection module, configured to: when the determination result of the determining module is negative, select a new carrier from other carriers that do not participate in pre-aggregation; the processing module is further configured to use the second selection
  • the new carrier selected by the module and the part carrier participating in the pre-aggregation are aggregated to satisfy the bandwidth capability of the user end, and the new carrier and part selected by the second selection module are aggregated; the release module is used in the second selection.
  • the component carrier that has been selected for pre-aggregation is released; the third selection module is used for selecting in the second selection module.
  • the base station selects a carrier-forming carrier set from a new set of carrier pre-aggregation according to the cell interference condition and the determined size to complete the pre-polymerization; the base station selects the carrier set from the pre-aggregation according to the bandwidth capability of the UE and the determined size.
  • FIG. 1 is a flowchart of a carrier selection method according to an embodiment of the present invention
  • FIG. 2 is a detailed flowchart of a carrier selection method according to an embodiment of the present invention
  • FIG. 3 is a carrier according to an embodiment of the present invention.
  • FIG. 4 is a block diagram showing a preferred configuration of a carrier selection apparatus according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.
  • a carrier selection scheme is provided in consideration of the problem that the throughput and rate performance of the UE of the aggregated carrier are seriously degraded due to the fact that the inter-cell interference is not considered in the carrier aggregation, in this embodiment.
  • the carrier aggregation involved is a key technology for supporting larger bandwidth in a wireless communication system in the future.
  • the base station base station, called a BS
  • the pre-aggregated carriers can be located at different carrier frequencies, and the position and size of the pre-aggregated carriers can be adjusted accordingly according to the needs of carrier aggregation.
  • the new basic carrier set formed by the pre-polymerization In order to ensure that the new basic carrier set formed by the pre-polymerization can meet the requirements of the wireless communication network, the new basic carrier set formed after the pre-polymerization must be able to be backward compatible with all the bandwidth capabilities of the wireless communication network, and at the same time, can be based on the wireless communication network.
  • the change of the environment forms a new pre-aggregated new basic carrier set capable of supporting more bandwidth capabilities, and can expand the number of carriers used by the pre-aggregated carrier, adapt to various requirements of the new wireless communication network, and ensure communication in the wireless communication network. quality.
  • a carrier selection method is provided. 1 is a flowchart of a carrier selection method according to an embodiment of the present invention. As shown in FIG.
  • the method includes the following steps S102 to S106: Step S102, the base station determines carrier aggregation information, where the carrier aggregation information includes: The size of the carrier capable of participating in carrier pre-aggregation, the bandwidth capability of the UE, and the new set of carrier pre-aggregation (determining a new set of carrier pre-aggregation may include determining a new set number of carrier pre-aggregation).
  • the base station can determine the size of the carrier capable of participating in carrier pre-aggregation according to all supported bandwidth types and the bandwidth capability of the UE; then, the base station determines the new set number of carrier pre-aggregation according to the bandwidth capability of the UE, that is, the base station determines The bandwidth capability of the client will affect the number and size of the aggregated carriers.
  • the base station determines the size of the carrier component that can participate in the carrier pre-aggregation aggregation. Because the new system must have a rigid requirement for backward compatibility with the old system, the new system may have the client in the old system. However, there is a big difference in the bandwidth requirements between the client that can be carried in the new system and the client in the old system.
  • the base station must organize all supported bandwidth types so that carrier aggregation can support all of these types of bandwidth.
  • the foregoing determining, by the base station, the new set of carrier pre-aggregation may include: among all the bandwidth capabilities of the UE, which combination is selected to form a new pre-aggregated carrier set, for example, if the bandwidth capability of the UE is 3 MHz, 5 MHz, 10 MHz, 15 MHz.
  • Step S104 The base station selects a component carrier forming carrier set from a new set of carrier pre-aggregation according to the cell interference condition and the determined size, and completes pre-polymerization.
  • the base station may select a component carrier to complete the pre-aggregation according to the interference situation, and the method includes: when selecting the pre-aggregated component carrier, considering the interference status of the current wireless communication system and the user end, the base station selects those carriers with less interference for pre-polymerization. It is beneficial to improve the spectral efficiency of the new carrier formed after pre-polymerization.
  • the pre-aggregated resources can be reallocated and the resources of the pre-aggregated part can be increased or decreased according to the status of the system, such as the load status, the change of the user end capability, and the inter-cell interference. Conducive to improving the utilization of resources.
  • Step S106 The base station selects a carrier from the set of carriers participating in the pre-aggregation according to the bandwidth capability of the UE and the determined size to perform aggregation.
  • the base station can determine whether the selected carrier satisfies the bandwidth capability of the user end; if the determination result is yes, the base station performs aggregation processing on the selected carrier; if the determination result is negative, the base station never participates in the pre-preemption Selecting a new carrier from the other carriers to be aggregated. If the selected new carrier and the part of the carriers participating in the pre-aggregation are aggregated to meet the bandwidth capability of the user, the selected new carrier and part are aggregated. Otherwise, the base station releases the already.
  • the base station aggregates the selected carrier resources to form a new aggregated carrier to meet the bandwidth capability of the UE, and finally obtains a carrier resource that the base station schedules for the UE.
  • the invention can still be reused.
  • the provided resource reservation based method reselects the new resource.
  • FIG. 2 is a detailed flowchart of a carrier selection method according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps S201 to S208: Step S201: The base station determines a size of a carrier component that can participate in carrier pre-polymerization aggregation. Step S202: The base station determines the bandwidth capability of the UE. Step S203: The base station determines a new set number of carrier pre-aggregation.
  • Step S204 The base station selects a component carrier to complete pre-polymerization according to the interference situation.
  • Step S205 The base station selects a carrier from the pre-aggregated carrier set to complete the aggregation according to the bandwidth capability of the user terminal, and determines whether the selected pre-aggregated carrier satisfies the bandwidth capability of the user end. If the determination result is yes, proceed to step S208, if the judgment structure is Otherwise, the process proceeds to step S206.
  • Step S206 The base station selects a new carrier from the other carriers that do not participate in the carrier pre-aggregation, and determines whether the newly selected carrier and the selected part of the pre-aggregated carrier can meet the requirements of the user end after the aggregation, and if the determination result is yes, proceed to the step. S208. If the determination result is no, proceed to step S207.
  • Step S207 The base station releases the pre-aggregated carrier resources that have been selected, and selects new resources on other carriers that do not participate in carrier pre-aggregation.
  • the component carrier selection method based on carrier pre-polymerization will be a wireless communication system.
  • the small carriers in the system are combined into a larger carrier to improve the spectrum utilization efficiency.
  • the new carrier formed after the pre-aggregation can be compatible with the bandwidth capabilities of multiple clients at the same time, which reduces the system overhead of the base station in resource scheduling.
  • the user terminal uses the new carrier formed after the aggregation, as the conditions of the user terminal change, such as the movement of the user end, the change of the client capability, and the like.
  • FIG. 3 is a structural block diagram of a carrier selection apparatus according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes: a determining module 31, a first selecting module 32, and an aggregating module 33. The foregoing structure is described below.
  • the determining module 31 is configured to determine carrier aggregation information, where the carrier aggregation information includes: a size of a carrier capable of participating in carrier pre-aggregation, a bandwidth capability of the user end, and a new set of carrier pre-aggregation; the first selecting module 32 is connected to the determining module 31.
  • the method is used to select a carrier-forming carrier set from a new set of carrier pre-aggregation according to a cell interference situation and a size determined by the determining module, to complete pre-polymerization, and the aggregation module 33 is connected to the determining module 31 and the first selecting module 32.
  • the carrier is selected for aggregation from the set of pre-aggregated carriers selected by the first selection module according to the bandwidth capability of the UE and the size determined by the determining module 31.
  • 4 is a block diagram of a preferred structure of a carrier selection apparatus according to an embodiment of the present invention.
  • the determining module 31 includes: a first determining submodule 41, configured to use all supported bandwidth types and user terminals.
  • the bandwidth capability determines the size of the carrier participating in the carrier pre-aggregation; the second determining sub-module 42 is configured to determine a new set of carrier pre-aggregation according to the bandwidth capability of the UE.
  • the device further includes: a determining module 43, a processing module 44, a second selecting module 45, a releasing module 46, and a third selecting module 47.
  • the above structure will be described below.
  • the determining module 43 is connected to the aggregation module 33 for determining whether the carrier selected by the aggregation module 33 satisfies the bandwidth capability of the user end.
  • the processing module 44 is connected to the aggregation module 33 and the determining module 43 for determining that the judgment result of the determining module 43 is In the case of YES, the carrier selected by the aggregation module 33 is subjected to aggregation processing.
  • the second selection module 45 is connected to the judging module 43 and the processing module 44, and is configured to select a new carrier from other carriers that do not participate in the pre-aggregation if the judgment result of the judging module 43 is NO.
  • the processing module 44 performs aggregation processing on the new carrier and part selected by the second selection module 45, in the case that the new carrier selected by the second selection module 45 and the partial carrier participating in the pre-aggregation are aggregated to satisfy the bandwidth capability of the user end.
  • the release module 46 is connected to the second selection module 45, and is configured to release the selected carrier before the new carrier selected by the second selection module 45 and the partial carrier participating in the pre-aggregation are aggregated and the bandwidth capability of the UE is not satisfied.
  • third selection module 47 connected to a second selection module 45, after a new carrier in the polymerization and prepolymerization portion participating carrier selection module 45 selects a second user terminal does not satisfy the bandwidth capability In this case, select a new resource on other carriers that are not participating in pre-aggregation.
  • the foregoing embodiment of the present invention provides a component carrier selection scheme based on carrier pre-aggregation, which considers the processing of inter-cell interference, and the base station determines the bandwidth capability of the UE in the wireless communication network, and the base station will be different.
  • the bandwidth capability is grouped and carrier pre-aggregated to form a new set of new basic carriers with greater bandwidth capability and backward compatibility with the bandwidth capabilities of some users in the existing wireless communication network system.
  • the pre-aggregated carriers can be located at different carrier frequencies, and the position and size of the pre-aggregated carriers can be adjusted accordingly according to the needs of carrier aggregation.
  • the new basic carrier set formed by the pre-polymerization In order to ensure that the new basic carrier set formed by the pre-polymerization can meet the requirements of the wireless communication network, the new basic carrier set formed after the pre-polymerization must be able to be backward compatible with all the bandwidth capabilities of the wireless communication network, and at the same time, can be based on the wireless communication network.
  • the change of the environment forms a new pre-aggregated new basic carrier set capable of supporting more bandwidth capabilities, and can expand the number of carriers used by the pre-aggregated carrier to adapt to various requirements of the new wireless communication network, and ensure communication in the wireless communication network.
  • Quality is a universal, easy-to-use, easy-to-use solution.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L’invention concerne un procédé et un dispositif de sélection de porteuses, le procédé comprenant les étapes suivantes: une station de base détermine des données d’agrégation de porteuses, les données d’agrégation de porteuses incluant les tailles des porteuses capables de participer à une préagrégation de porteuses, la capacité de bande passante d’un terminal d’utilisateur, un nouvel agrégat de la préagrégation de porteuses; selon la situation de brouillage de la cellule et les tailles déterminées, la station de base sélectionne des porteuses composantes dans le nouvel agrégat de la préagrégation de porteuses afin de former un agrégat de porteuses, et finit la préagrégation; selon la capacité de bande passante du terminal d’utilisateur et les tailles déterminées, la station de base sélectionne, en vue de former un agrégat, les porteuses de l’agrégat de porteuses qui participent à la préagrégation. L’invention permet d’assurer la qualité des communications dans un réseau de communication sans fil.
PCT/CN2010/072693 2009-08-19 2010-05-12 Procédé et dispositif de sélection de porteuses WO2011020345A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2009101675145A CN101998645A (zh) 2009-08-19 2009-08-19 载波选择方法及装置
CN200910167514.5 2009-08-19

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WO2011020345A1 true WO2011020345A1 (fr) 2011-02-24

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Publication number Priority date Publication date Assignee Title
US9848339B2 (en) 2011-11-07 2017-12-19 Qualcomm Incorporated Voice service solutions for flexible bandwidth systems
US9516531B2 (en) 2011-11-07 2016-12-06 Qualcomm Incorporated Assistance information for flexible bandwidth carrier mobility methods, systems, and devices
US20140010170A1 (en) * 2011-12-09 2014-01-09 Qualcomm Incorporated Providing for mobility for flexible bandwidth carrier systems
EP3522598B1 (fr) * 2016-09-29 2024-07-31 Ntt Docomo, Inc. Dispositif d'utilisateur, station de base, et procédé de communication

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CN101047429A (zh) * 2006-05-10 2007-10-03 华为技术有限公司 资源分配的方法
WO2008115699A1 (fr) * 2007-03-20 2008-09-25 Motorola, Inc. Procédé et appareil permettant l'attribution de ressources dans un système de communication multiporteuse
CN101312551A (zh) * 2007-05-25 2008-11-26 鼎桥通信技术有限公司 数据传输方法和无线网络控制器、基站及用户终端

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CN101404539A (zh) * 2008-11-18 2009-04-08 中兴通讯股份有限公司 一种混合时分双工大带宽系统数据传输方法
CN101478808B (zh) * 2009-01-21 2014-03-19 中兴通讯股份有限公司 一种下行控制信息的发送及检测方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101047429A (zh) * 2006-05-10 2007-10-03 华为技术有限公司 资源分配的方法
WO2008115699A1 (fr) * 2007-03-20 2008-09-25 Motorola, Inc. Procédé et appareil permettant l'attribution de ressources dans un système de communication multiporteuse
CN101312551A (zh) * 2007-05-25 2008-11-26 鼎桥通信技术有限公司 数据传输方法和无线网络控制器、基站及用户终端

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