WO2011020344A1 - 中继网络中载波聚合的确定方法与装置 - Google Patents
中继网络中载波聚合的确定方法与装置 Download PDFInfo
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- WO2011020344A1 WO2011020344A1 PCT/CN2010/072641 CN2010072641W WO2011020344A1 WO 2011020344 A1 WO2011020344 A1 WO 2011020344A1 CN 2010072641 W CN2010072641 W CN 2010072641W WO 2011020344 A1 WO2011020344 A1 WO 2011020344A1
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- carrier
- primary
- aggregation
- user terminal
- determining
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- 230000002776 aggregation Effects 0.000 title claims abstract description 131
- 238000004220 aggregation Methods 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000013468 resource allocation Methods 0.000 claims description 23
- 239000000969 carrier Substances 0.000 claims description 14
- 230000004931 aggregating effect Effects 0.000 claims description 2
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 20
- 238000005259 measurement Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
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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
- 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
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- 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 Carrier Aggregation technology, and in particular, to a method and an apparatus for determining carrier aggregation in a relay network. Background technique
- Carrier aggregation is a key technology for supporting larger bandwidth in future wireless communication systems.
- the core of the system is to determine the bandwidth of the user terminal (UT, User Terminal) in the wireless communication network through a base station (BS, Base Station) or a relay station (RS, Relay Station). Capability, the base station selects carrier resources of different bandwidth capabilities in the radio resources to aggregate to form a new carrier with greater bandwidth capability, and is backward compatible with the bandwidth capability of the user terminal in the existing wireless communication network system.
- Carrier aggregation called the primary aggregate carrier.
- the primary aggregate carrier is used to carry key control signaling and control information in important physical processes.
- carrier resources other than the primary aggregation carrier may be aggregated for different types of user terminals in the wireless communication network to form a carrier that is incomplete backward compatible with all user terminal bandwidth capabilities, referred to as a secondary aggregation carrier.
- the secondary aggregation carrier is used to carry related data information and the like.
- the base station and the relay station select a primary aggregate carrier resource and a secondary aggregate carrier on the base station to the relay station and the two-way link between the relay station and the user terminal in the uplink and downlink according to the measurement results of the relay station and the user terminal, and on the base station and the relay station. Resources.
- the information of the control information, the signaling, and the data are classified into the primary and secondary aggregated carrier resources by the division of the primary and secondary aggregated carrier resources, thereby being uplinked and downlinked according to the base station, the relay station, and the user terminal.
- the measurement results of the link lay the foundation for rational allocation of resources, and the quality of wireless communication is improved as much as possible under the conditions of the prior art.
- solving how wireless networks support larger bandwidths in the bandwidth of current wireless communication systems is a key factor in improving the throughput of inter-cell user terminals and the average throughput of user terminals. Faced with severe challenges.
- LTE Long Term Evolution
- LTE-A LTE- In Advanced
- the LTE-Advanced system is an evolved version of LTE.
- the system uses carrier aggregation to aggregate a number of carriers whose bandwidth meets certain requirements to support higher bandwidth, thereby obtaining a higher data rate.
- Each aggregated carrier is called a component carrier.
- the component carriers may be continuous or discontinuous in a frequency band.
- Each component carrier is composed of several subcarriers, and each component carrier includes a subcarrier. The number of carriers is determined by the bandwidth size of the component carrier and the frequency spacing between the subcarriers.
- the main object of the present invention is to provide a method and a device for determining carrier aggregation in a relay network, which can perform setting of a primary aggregation carrier and a secondary aggregation carrier according to a user terminal access situation of the system.
- a method for determining carrier aggregation in a relay network comprising:
- the user terminal After receiving the channel quality information measured by the user terminal, determining, according to the channel quality information and the broadband support capability of the user terminal, a resource allocation manner of the primary aggregation carrier and the secondary aggregation carrier, and notifying the user terminal.
- the method further includes:
- the user terminals are grouped according to their broadband support capabilities, and the allocation modes of the primary aggregation carrier and the secondary aggregation carrier are set for each group of user terminals.
- the method for determining a resource allocation manner of the primary aggregation carrier and the secondary aggregation carrier includes: determining a manner in which the primary aggregation carrier and the secondary aggregation carrier are allocated to the base station and the relay station, including: the primary aggregation carrier and the secondary aggregation carrier are all allocated to the relay station; The aggregated carrier is allocated to the relay station, and the secondary aggregated carrier is allocated to the base station; the primary aggregated carrier is allocated to the base station, and the secondary aggregated carrier is allocated to the relay station.
- determining a resource allocation manner of the primary aggregation carrier and the secondary aggregation carrier further comprising: determining a bandwidth of each component carrier in the primary aggregation carrier and the secondary aggregation carrier, and a quantity of component carriers.
- the method further includes:
- the current primary aggregation carrier is determined according to the user terminal accessed in the current network, and the current primary aggregation carrier can only be backward compatible with the current access network and only supports the single-carrier user terminal.
- a device for determining carrier aggregation in a relay network comprising:
- a first determining unit configured to determine, according to a broadband support capability of all user terminals in the network, a secondary aggregate carrier and a backward compatible primary aggregate carrier;
- a receiving unit configured to receive channel quality information measured by the user terminal
- a second determining unit configured to: according to the channel quality information, the broadband branch of the user terminal The capability of determining, by the user terminal, a resource allocation manner of the primary aggregate carrier and the secondary aggregate carrier;
- a notification unit configured to notify the user terminal of a resource allocation manner.
- the device further includes:
- a grouping unit configured to group the user terminals according to their broadband support capabilities
- a setting unit configured to set a primary aggregation carrier and a secondary aggregation carrier for each group of user terminals.
- the second determining unit determines a resource allocation manner of the primary aggregation carrier and the secondary aggregation carrier, including:
- the primary aggregation carrier and the secondary aggregation carrier are allocated to the base station and the relay station, including: the primary aggregation carrier and the secondary aggregation carrier are all allocated to the relay station; the primary aggregation carrier is allocated to the relay station, and the secondary aggregation carrier is allocated to the base station; Assigned to the base station, the secondary aggregated carrier is allocated to the relay station.
- the second determining unit determines a resource allocation manner of the primary aggregation carrier and the secondary aggregation carrier, and further includes:
- the bandwidth of each component carrier in the primary aggregate carrier and the secondary aggregate carrier and the number of component carriers are determined.
- the device further includes:
- a third determining unit configured to determine a current primary aggregation carrier according to the user terminal accessed in the current network, where the current primary aggregation carrier can only be backward compatible with the user terminal that supports only a single carrier in the current access network.
- the primary aggregation carrier is set according to the broadband support capability of the user terminal supported by the relay system, so that the primary aggregation carrier can be compatible with all user terminals, and the primary aggregation corresponding to each type of user terminal is set.
- the correspondence between the carrier and the secondary aggregation carrier, the system can select the primary aggregation carrier and the secondary aggregation carrier according to the current user terminal access situation.
- the broadband support capability of the current user terminal determines the manner in which the user terminal allocates resources, and notifies the user terminal.
- the invention can flexibly realize the allocation of the primary aggregate carrier and the secondary aggregate carrier, and the utilization of system resources is high.
- FIG. 1 is a flowchart of a method for determining carrier aggregation in a relay network according to the present invention
- FIG. 2 is a schematic structural diagram of a device for determining carrier aggregation in a relay network according to the present invention. detailed description
- the basic idea of the present invention is: setting the primary aggregation carrier according to the broadband support capability of the user terminal supported by the relay system, so that the primary aggregation carrier can be compatible with all user terminals, and setting corresponding to each type of user terminal access
- the corresponding relationship between the primary aggregation carrier and the secondary aggregation carrier, the system can select the primary aggregation carrier and the secondary aggregation carrier according to the current user terminal access situation.
- the invention can flexibly realize the allocation of the primary aggregate carrier and the secondary aggregate carrier, and the utilization of system resources is high.
- a method for determining carrier aggregation in a relay network of the present invention includes the following steps:
- Step 101 The base station determines the bandwidth capability of all user terminals that need to be supported in the wireless communication network.
- the base station determines the bandwidth capability of all user terminals that need to be supported in the wireless communication network (relay system), and the bandwidth capability of the user terminal determines the size and number of bandwidths that need to be backward compatible when the primary aggregation carrier is formed. That is to say, the primary aggregation carrier needs to determine the type of user terminal that does not currently support the aggregated carrier, and the bandwidth and frequency of the carrier supported by the user terminal that does not support the aggregated carrier. Etc., when determining the primary aggregate carrier, using the carrier in the original system as the component carrier of the primary aggregate carrier, and maintaining the channel characteristics in the original carrier, thereby implementing backward direction of the user terminal in the original system (possibly multiple systems). compatible.
- Step 102 The base station selects a fully backward compatible carrier resource to form a primary aggregate carrier.
- the base station selects a fully backward compatible carrier resource to form a primary aggregated carrier.
- full consideration should be given to the bandwidth capability of all user terminals in the wireless communication network.
- the new carrier formed by the primary aggregated carrier will be uniformly scheduled as a new basic carrier, which is beneficial to reduce the complexity of base station resource scheduling.
- the different bandwidth capabilities of the user terminals are pre-grouped. When the resources are selected to form the primary aggregation carrier, different carrier resources are selected to form a primary aggregation carrier set, and each subset in the set corresponds to a packet with different bandwidth capabilities.
- the bandwidth capability is grouped as follows, ie, ⁇ 3MHz, 5MHz, 10MHz ⁇ , ⁇ 20MHz, 50MHz And 100 MHz ⁇ two groups, corresponding to form a primary aggregate carrier, each group forms at least one primary aggregate carrier, and for backward compatibility with three carriers, the least common multiple of all carriers that are backward compatible in each group may be selected, For a group, a carrier of 30 MHz can be selected as the primary aggregate carrier, and for the second group, a carrier of 100 MHz can be selected as the primary aggregate carrier.
- the selected primary aggregation carrier only needs to be compatible with the carrier in the original system, that is, the bandwidth of the primary aggregation carrier covers all existing carriers, and it is not necessary to select the least common multiple of all the bandwidths in the foregoing group.
- the base station schedules carrier resources, it may uniformly schedule all groups in the primary aggregation carrier, or may schedule each group separately.
- the resources of the primary aggregation carrier may be statically configured. For example, the primary aggregation carrier and the secondary aggregation carrier when different user terminal types are determined according to the bandwidth capabilities supported by all user terminals in the relay system, so that the user reports bandwidth support. After the capability, the primary aggregation carrier and the secondary aggregation carrier that need to be allocated to the user terminal can be determined according to the group to which it belongs and the type of the user terminal currently accessed. Of course, the resources of the primary aggregate carrier can also be dynamically selected, and can be based on none. The current service status of the line communication system and the current bandwidth capacity distribution of the user terminal re-form a new bandwidth capability packet and form a new primary aggregation carrier group. The selection of the primary aggregation carrier may not be fully backward compatible with the bandwidth capabilities of all user terminals, and only backward compatible with the user terminal being served may satisfy the requirements.
- the secondary aggregation carrier may be allocated to the group in which the primary aggregation carrier is located according to the different groups set by the primary aggregation carrier according to the backward compatibility requirement.
- the base station is in resource scheduling, all the secondary aggregation carriers in the group are jointly scheduled to reduce the scheduling complexity.
- Step 103 The base station sets a primary and secondary aggregate carrier resource allocation threshold.
- the base station sets the threshold of the primary and secondary aggregated carrier resource allocations, and is used to allocate primary and secondary aggregated carrier resources between the base station and the relay station according to the link quality of the base station or the relay station.
- the setting of the threshold is determined based on the characteristics of the system and the experience.
- Step 104 The base station sends the allocated threshold to the relay station.
- Step 105 The user terminal measures channel quality information, and uplinks the base station or the relay station.
- the user terminal measures the channel quality information and reports it to the base station or the relay station. This is because the current user terminal may be accessed by the base station or the relay station. Therefore, the user terminal reports the result of the measurement to the base station or relay station serving it.
- Step 106 The base station or the relay station compares the measurement result with the allocation threshold, and determines the uplink and downlink primary and secondary carrier resource allocation manners according to the bandwidth capability of the user terminal.
- the base station or the relay station compares the measurement result with the distribution threshold, and determines the uplink and downlink primary and secondary carrier resource allocation schemes according to the bandwidth capability of the user terminal, mainly determining the allocation of the primary and secondary aggregated carrier resources, that is, All are allocated on the relay station; the primary aggregated carrier resource is on the relay station, and the secondary aggregated carrier resource is on the base station; the primary aggregated carrier resource is on the base station, and the secondary aggregated carrier resource is on the relay station, and the primary and secondary are allocated reasonably according to the bandwidth capability of the user terminal.
- the bandwidth of the aggregated carrier The bandwidth of the aggregated carrier.
- Step 107 The base station or the relay station determines the primary and secondary aggregate carrier resources according to the resource allocation scheme.
- Step 108 The base station or the relay station notifies the user terminal of the primary and secondary aggregate carrier resource allocation scheme by using the uplink grant.
- a new set of basic carriers that are backward compatible with bandwidth capabilities called the primary aggregate carrier.
- the primary aggregated carrier is used to carry critical control signaling and control information in important physical processes.
- Other carrier resources other than the primary aggregated carrier may be aggregated for different types of user terminals in the wireless communication network to form a carrier that is incompletely backward compatible with all user terminal bandwidth capabilities, referred to as a secondary aggregated carrier.
- the secondary aggregation carrier is used to carry related data information and the like.
- the base station and the relay station select the primary aggregated carrier resource and the secondary aggregated carrier resource on the base station and the relay station for the bidirectional link between the base station and the relay station and the relay station to the user terminal in the uplink and downlink according to the measurement result of the relay station and the user terminal. , as much as possible to improve the quality of wireless communication.
- the apparatus for determining carrier aggregation in a relay network of the present invention includes a first determining unit 20, a receiving unit 21, and a second determining.
- the second determining unit 22 is configured to determine, according to the channel quality information, the broadband support capability of the user terminal, a resource allocation manner of the primary aggregation carrier and the secondary aggregation carrier, where the user terminal determines; Notifying the user terminal of the resource allocation manner.
- the second determining unit 22 determines a resource allocation manner of the primary aggregation carrier and the secondary aggregation carrier, and includes: determining a manner in which the primary aggregation carrier and the secondary aggregation carrier are allocated to the base station and the relay station, including: the primary aggregation carrier and the secondary aggregation carrier are all allocated to the relay station. ; the primary aggregate carrier is allocated to the relay station, and the secondary aggregate carrier is allocated to the base station; The carrier is allocated to the base station, and the secondary aggregated carrier is allocated to the relay station.
- the second determining unit 22 determines a resource allocation manner of the primary aggregation carrier and the secondary aggregation carrier, and further includes: determining a bandwidth of each component carrier in the primary aggregation carrier and the secondary aggregation carrier, and a quantity of component carriers.
- the apparatus for determining carrier aggregation in the relay network of the present invention further includes a grouping unit 24 and a setting unit 25, wherein the grouping unit 24 is configured to group the user terminals according to their broadband support capabilities; the setting unit 25 is configured to The allocation mode of the primary aggregation carrier and the secondary aggregation carrier is set for each group of user terminals.
- the apparatus for determining carrier aggregation in the relay network of the present invention further includes a third determining unit 26, configured to determine, according to a user terminal accessed in the current network, a current primary aggregated carrier, where the current primary aggregated carrier It can only be backward compatible with the current access network and only supports single-carrier user terminals.
- the apparatus for determining carrier aggregation in the relay network shown in FIG. 2 is designed to implement the method for determining carrier aggregation in the foregoing relay network, and the functions of each processing unit in FIG. 2 can be referred to FIG. It is understood from the related description that the functions of the various processing units can be implemented by a program running on a processor, or by a specific logic circuit.
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Description
中继网络中载波聚合的确定方法与装置 技术领域
本发明涉及载波聚合 ( Carrier Aggregation )技术， 尤其涉及一种中继 网络中载波聚合的确定方法与装置。 背景技术
载波聚合是未来无线通信系统中支持更大带宽的关键技术， 其核心是 通过基站（BS, Base Station )或中继站（RS, Relay Station )确定无线通信 网络中用户终端 （UT, User Terminal ) 的带宽能力， 基站在无线资源中选 择不同的带宽能力的载波资源进行聚合而形成新的具有更大带宽能力的载 波， 并与已有无线通信网络系统中用户终端的带宽能力后向兼容的新的基 本载波聚合， 称为主聚合载波。 主聚合载波用于承载关键的控制信令及重 要的物理过程中的控制信息。 除了主聚合载波的其他载波资源可以针对无 线通信网络中的不同类型的用户终端进行聚合而形成不完全后向兼容所有 用户终端带宽能力的载波， 称为辅聚合载波。 辅聚合载波用于承载相关的 数据信息等。 基站和中继站根据中继站和用户终端的测量结果， 为上行链 路和下行链路中基站到中继站及中继站到用户终端之间的双向链路、 在基 站和中继站上选择主聚合载波资源和辅聚合载波资源。 主聚合载波资源和 辅聚合载波资源的分配有三种情况， 即， 全部在中继站上； 主聚合载波资 源在中继站上、 辅聚合载波资源在基站上； 主聚合载波资源在基站上、 辅 聚合载波资源在中继站上。 通过主、 辅聚合载波资源的划分， 将控制信息、 信令与数据等信息进行分类， 分别放置于主、 辅聚合载波资源上， 从而为 根据基站、 中继站、 用户终端之间上行链路、 下行链路的测量结果合理分 配资源奠定了基础， 在现有技术的条件下， 尽可能地改善了无线通信质量。
在下一代的宽带无线通信网络中， 解决无线通信网络中如何在当前的 无线通信系统中的带宽下支持更大的带宽成为提高小区间用户终端吞吐量 及用户终端平均吞吐量的一个关键因素并面临严峻的挑战。
目前， 在第三代合作伙伴计划的长期演进（ LTE , Long Term Evolution ) 系统中提出釆用载波聚合的方式来有效地在当前的无线通信系统中支持更 大的带宽， 以满足新一代无线标准中对吞吐量、 峰值速率等指标的需求。 载波聚合是未来无线通信系统中支持更大带宽的关键技术， 通过对不同的 载波进行聚合， 形成更大带宽的载波， 在聚合后的带宽上支持具有更强能 力的用户终端，例如， LTE-Advanced ( LTE- A )中载频带宽超过了 100 MHz。
LTE-Advanced系统是 LTE 的演进版本。该系统将釆用载波聚合的方式对若 干个带宽满足一定要求的载波进行聚合以支持更高的带宽， 进而获得更高 的数据速率。 每个被聚合的载波称为一个分量载波（component carrier ), 分 量载波在频带上可以是连续的， 也可以是不连续的， 每个分量载波由若干 个子载波组成， 每个分量载波包含的子载波个数由该分量载波的带宽大小 和子载波之间的频率间隔决定。 由于无线通信系统中上行链路和下行链路 之间的业务非对称、 导致载波聚合时存在上行链路和下行链路的载波非对 称的情况， 如果要求无线通信网络中所有的载波资源全部后向兼容， 那么 会存在支持非对称载波聚合时对所有载波资源都要求完全后向兼容的基站 调度复杂度与灵活性降低的问题。 不仅如此， 目前也没有针对中继系统的 载波聚合分配方式。 发明内容
有鉴于此， 本发明的主要目的在于提供一种中继网络中载波聚合的确 定方法与装置， 能根据系统的用户终端接入情况进行主聚合载波及辅聚合 载波的设置。
为达到上述目的， 本发明的技术方案是这样实现的：
一种中继网络中载波聚合的确定方法， 包括：
根据网络中所有用户终端的宽带支持能力确定辅聚合载波及能后向兼 容的主聚合载波； 以及
接收到用户终端所测量的信道质量信息后， 根据所述信道质量信息、 所述用户终端的宽带支持能力为所述用户终端确定主聚合载波及辅聚合载 波的资源分配方式， 并通知所述用户终端。
优选地， 所述方法还包括：
对用户终端按其宽带支持能力进行分组， 为各组用户终端设置主聚合 载波及辅聚合载波的分配方式。
优选地， 确定主聚合载波及辅聚合载波的资源分配方式， 包括： 确定主聚合载波及辅聚合载波分配到基站及中继站的方式， 包括： 主 聚合载波及辅聚合载波全部分配到中继站上； 主聚合载波分配到中继站上、 辅聚合载波分配到基站上； 主聚合载波分配到基站上、 辅聚合载波分配到 中继站上。
优选地， 确定主聚合载波及辅聚合载波的资源分配方式， 还包括： 确定主聚合载波及辅聚合载波中各分量载波的频带宽度及分量载波的 数量。
优选地， 所述方法还包括：
根据当前网络中接入的用户终端确定当前的主聚合载波， 所述当前的 主聚合载波仅能后向兼容当前接入网络仅支持单载波的用户终端。
一种中继网络中载波聚合的确定装置， 包括：
第一确定单元， 用于根据网络中所有用户终端的宽带支持能力确定辅 聚合载波及能后向兼容的主聚合载波；
接收单元， 用于接收用户终端所测量的信道质量信息；
第二确定单元， 用于根据所述信道质量信息、 所述用户终端的宽带支
持能力为所述用户终端确定主聚合载波及辅聚合载波的资源分配方式； 以 及
通知单元， 用于将资源分配方式通知所述用户终端。
优选地， 所述装置还包括：
分组单元， 用于对用户终端按其宽带支持能力进行分组； 以及 设置单元， 用于为各组用户终端设置主聚合载波及辅聚合载波的分配 方式。
优选地， 所述第二确定单元确定主聚合载波及辅聚合载波的资源分配 方式， 包括：
确定主聚合载波及辅聚合载波分配到基站及中继站的方式， 包括： 主 聚合载波及辅聚合载波全部分配到中继站上； 主聚合载波分配到中继站上、 辅聚合载波分配到基站上； 主聚合载波分配到基站上、 辅聚合载波分配到 中继站上。
优选地， 所述第二确定单元确定主聚合载波及辅聚合载波的资源分配 方式， 还包括：
确定主聚合载波及辅聚合载波中各分量载波的频带宽度及分量载波的 数量。
优选地， 所述装置还包括：
第三确定单元， 用于根据当前网络中接入的用户终端确定当前的主聚 合载波， 所述当前的主聚合载波仅能后向兼容当前接入网络仅支持单载波 的用户终端。
本发明中， 根据中继系统所支持的用户终端的宽带支持能力进行主聚 合载波的设置， 以使主聚合载波能兼容所有的用户终端， 并设置各类型用 户终端接入时所对应的主聚合载波及辅聚合载波的对应关系， 系统能根据 当前的用户终端接入情况进行主聚合载波及辅聚合载波的选择。 并能根据
当前用户终端的宽带支持能力为用户终端确定资源分配的方式， 并通知该 用户终端。 本发明能灵活地实现主聚合载波及辅聚合载波的分配， 系统资 源的利用率较高。 附图说明
图 1为本发明中继网络中载波聚合的确定方法的流程图；
图 2为本发明中继网络中载波聚合的确定装置的组成结构示意图。 具体实施方式
本发明的基本思想是： 根据中继系统所支持的用户终端的宽带支持能 力进行主聚合载波的设置， 以使主聚合载波能兼容所有的用户终端， 并设 置各类型用户终端接入时所对应的主聚合载波及辅聚合载波的对应关系， 系统能根据当前的用户终端接入情况进行主聚合载波及辅聚合载波的选 择。 并能根据当前用户终端的宽带支持能力为用户终端确定资源分配的方 式， 并通知该用户终端。 本发明能灵活地实现主聚合载波及辅聚合载波的 分配， 系统资源的利用率较高。
为使本发明的目的、 技术方案和优点更加清楚明白， 以下举实施例并 参照附图， 对本发明进一步详细说明。
图 1为本发明中继网络中载波聚合的确定方法的流程图， 如图 1所示， 本发明中继网络中载波聚合的确定方法包括以下步骤：
步骤 101 :基站确定无线通信网络中需要支持的所有用户终端的带宽能 力。
基站确定无线通信网络（中继系统） 中需要支持的所有用户终端的带 宽能力， 用户终端的带宽能力决定着主聚合载波形成时需要后向兼容的带 宽大小与数量。 也就是说， 主聚合载波需要确定出当前不支持聚合载波的 用户终端类型， 这些不支持聚合载波的用户终端所支持载波的带宽及频点
等， 以在确定主聚合载波时， 将原系统中的载波作为主聚合载波的分量载 波， 并保持原载波中的频道特性， 从而实现对原系统（可能是多个系统） 中用户终端后向兼容。
步骤 102: 基站选择完全后向兼容的载波资源聚合形成主聚合载波。 基站选择完全后向兼容的载波资源聚合形成主聚合载波， 在选择载波 资源形成主聚合载波时， 要充分考虑到无线通信网络中所有的用户终端的 带宽能力。 主聚合载波形成的新载波将作为一个新的基本载波统一调度， 有利于降低基站资源调度的复杂度。 为了提高频谱效率， 将用户终端的不 同带宽能力进行预先分组， 在选择资源形成主聚合载波时， 选择不同的载 波资源形成主聚合载波集合， 集合中的每个子集对应于不同带宽能力的分 组。 例如， 当无线通信网络中存在以下的用户终端带宽能力时， 3MHz、 5MHz、 10MHz、 20MHz、 50MHz、 100MHz, 对带宽能力进行如下的分组， 即， {3MHz、 5MHz、 10MHz}、 {20MHz、 50MHz、 100MHz}两个组， 对应 形成主聚合载波时， 每个组形成至少一个主聚合载波， 为了后向兼容三种 载波， 可以选择每个组中后向兼容的所有载波的最小公倍数， 对于第一个 组， 可以选择 30MHz 的载波作为主聚合载波， 对于第二个组， 可以选择 100MHz的载波作为主聚合载波。 需要说明的是， 所选择的主聚合载波， 只 要兼容原系统中的载波即可， 即主聚合载波的带宽涵盖所有现有载波即可， 不一定非得选用前述组中所有带宽的最小公倍数。 基站调度载波资源时， 可以对主聚合载波中所有组统一调度， 也可以分别调度每个组。
主聚合载波的资源可以是静态配置的， 例如， 根据中继系统中所有用 户终端所支持的带宽能力， 分别确定不同用户终端类型时的主聚合载波及 辅聚合载波， 这样， 当用户上报带宽支持能力后， 根据其所属的组及当前 接入的用户终端类型即可确定当前需要分配给或用户终端的主聚合载波及 辅聚合载波。 当然， 主聚合载波的资源也可以是动态选择的， 可以根据无
线通信系统当前的业务状况、 用户终端当前的带宽能力分布情况重新形成 新的带宽能力分组， 并形成新的主聚合载波组。 主聚合载波的选择， 可以 不完全后向兼容所有的用户终端的带宽能力， 只后向兼容正在服务的用户 终端就可以满足要求。
而辅聚合载波的选择中， 也可以根据后向兼容的需求， 根据前述主聚 合载波所设置的不同的组， 将辅聚合载波分配到主聚合载波所在的组。 基 站在资源调度时， 将组中所有的辅聚合载波共同调度， 以降低调度的复杂 度。
步骤 103: 基站设置主、 辅聚合载波资源分配阔值。
基站设置主、 辅聚合载波资源分配的阔值， 用于根据基站或中继站的 链路质量， 合理的在基站和中继站之间分配主、 辅聚合载波资源。 阔值的 设置是根据系统特点及经验值确定的。
步骤 104: 基站将分配阔值发送给中继站。
步骤 105: 用户终端测量信道质量信息， 并上 4艮基站或中继站。
用户终端测量信道质量信息， 并上报基站或中继站， 这是因为当前用 户终端可能由基站或中继站接入， 因此， 用户终端将测量的结果要上报给 为其服务的基站或中继站。
步骤 106: 基站或中继站将测量结果与分配阔值对比， 并根据用户终端 的带宽能力确定上行链路和下行链路主、 辅载波资源分配方式。
基站或中继站将测量结果与分配阔值对比， 并根据用户终端的带宽能 力确定上行链路和下行链路主、 辅载波资源分配方案， 主要是确定主、 辅 聚合载波资源的分配情况， 即， 全部分配在中继站上； 主聚合载波资源在 中继站上、 辅聚合载波资源在基站上； 主聚合载波资源在基站上、 辅聚合 载波资源在中继站上， 同时根据用户终端的带宽能力合理分配主、 辅聚合 载波的带宽大小。
步骤 107: 基站或中继站根据资源分配方案确定主、 辅聚合载波资源。 步骤 108: 基站或中继站通过上行链路授权将主、辅聚合载波资源分配 方案通知用户终端。
通过基站或中继站确定无线通信网络中用户终端的带宽能力， 基站在 无线资源中选择不同的带宽能力的载波资源进行聚合形成新的具有更大带 宽能力并与已有无线通信网络系统中用户终端的带宽能力后向兼容的新的 基本载波集合， 称为主聚合载波。 主聚合载波用于承载关键的控制信令及 重要的物理过程中的控制信息。 除了主聚合载波的其他载波资源可以针对 无线通信网络中的不同类型的用户终端进行聚合形成不完全后向兼容所有 用户终端带宽能力的载波， 称为辅聚合载波。 辅聚合载波用于承载相关的 数据信息等。 基站和中继站根据中继站和用户终端的测量结果， 为上行链 路和下行链路中基站到中继站及中继站到用户终端之间的双向链路在基站 和中继站上选择主聚合载波资源和辅聚合载波资源， 尽可能地改善了无线 通信质量。
图 2为本发明中继网络中载波聚合的确定装置的组成结构示意图， 如 图 2所示， 本发明中继网络中载波聚合的确定装置包括第一确定单元 20、 接收单元 21、 第二确定单元 22和通知单元 23 , 其中， 第一确定单元 20用 于根据网络中所有用户终端的宽带支持能力确定辅聚合载波及能后向兼容 的主聚合载波； 接收单元 21用于接收用户终端所测量的信道质量信息； 第 二确定单元 22用于根据所述信道质量信息、 所述用户终端的宽带支持能力 为所述用户终端确定主聚合载波及辅聚合载波的资源分配方式； 通知单元 23用于将资源分配方式通知所述用户终端。第二确定单元 22确定主聚合载 波及辅聚合载波的资源分配方式， 包括： 确定主聚合载波及辅聚合载波分 配到基站及中继站的方式， 包括： 主聚合载波及辅聚合载波全部分配到中 继站上； 主聚合载波分配到中继站上、 辅聚合载波分配到基站上； 主聚合
载波分配到基站上、 辅聚合载波分配到中继站上。
或者，第二确定单元 22确定主聚合载波及辅聚合载波的资源分配方式， 还包括： 确定主聚合载波及辅聚合载波中各分量载波的频带宽度及分量载 波的数量。
如图 2所示， 本发明中继网络中载波聚合的确定装置还包括分组单元 24和设置单元 25 , 其中， 分组单元 24用于对用户终端按其宽带支持能力 进行分组； 设置单元 25用于为各组用户终端设置主聚合载波及辅聚合载波 的分配方式。
如图 2所示， 本发明中继网络中载波聚合的确定装置还包括第三确定 单元 26, 用于根据当前网络中接入的用户终端确定当前的主聚合载波， 所 述当前的主聚合载波仅能后向兼容当前接入网络仅支持单载波的用户终 端。
本领域技术人员应当理解， 图 2所示的中继网络中载波聚合的确定装 置是为实现前述中继网络中载波聚合的确定方法而设计的， 图 2 中各处理 单元的功能可参照图 1 中的相关描述而理解， 各处理单元的功能可通过运 行于处理器上的程序而实现， 也可通过具体的逻辑电路而实现。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。
Claims
1、一种中继网络中载波聚合的确定方法，其特征在于， 所述方法包括： 根据网络中所有用户终端的宽带支持能力确定辅聚合载波及后向兼容 的主聚合载波；
接收到用户终端所测量的信道质量信息后， 根据所述信道质量信息、 所述用户终端的宽带支持能力为所述用户终端确定主聚合载波及辅聚合载 波的资源分配方式， 并通知所述用户终端。
2、 根据权利要求 1所述的方法， 其特征在于， 所述方法还包括： 对用户终端按该用户终端宽带支持能力进行分组， 为各组用户终端设 置主聚合载波及辅聚合载波的分配方式。
3、 根据权利要求 1或 2所述的方法， 其特征在于， 所述确定主聚合载 波及辅聚合载波的资源分配方式为： 确定主聚合载波及辅聚合载波分配到 基站及中继站的方式， 具体为： 主聚合载波及辅聚合载波全部分配到中继 站上； 或者， 主聚合载波分配到中继站上、 辅聚合载波分配到基站上； 或 者， 主聚合载波分配到基站上、 辅聚合载波分配到中继站上。
4、 根据权利要求 3所述的方法， 其特征在于， 所述确定主聚合载波及 辅聚合载波的资源分配方式为：
确定主聚合载波及辅聚合载波中各分量载波的频带宽度及分量载波的 数量。
5、 根据权利要求 1所述的方法， 其特征在于， 所述方法还包括： 根据当前网络中接入的用户终端确定当前的主聚合载波， 所述当前的 主聚合载波后向兼容当前接入网络仅支持单载波的用户终端。
6、 一种中继网络中载波聚合的确定装置， 其特征在于， 所述装置包括 第一确定单元、 接收单元、 第二确定单元和通知单元； 其中，
第一确定单元， 用于根据网络中所有用户终端的宽带支持能力确定辅 聚合载波及后向兼容的主聚合载波；
接收单元， 用于接收用户终端所测量的信道质量信息；
第二确定单元， 用于根据所述信道质量信息、 所述用户终端的宽带支 持能力为所述用户终端确定主聚合载波及辅聚合载波的资源分配方式； 通知单元， 用于将资源分配方式通知所述用户终端。
7、 根据权利要求 6所述的装置， 其特征在于， 所述装置还包括分组单 元和设置单元； 其中，
分组单元， 用于对用户终端按其宽带支持能力进行分组；
设置单元， 用于为各组用户终端设置主聚合载波及辅聚合载波的分配 方式。
8、 根据权利要求 6或 7所述的装置， 其特征在于， 所述第二确定单元 进一步确定主聚合载波及辅聚合载波分配到基站及中继站的方式， 具体确 定： 主聚合载波及辅聚合载波全部分配到中继站上； 或者具体确定： 主聚 合载波分配到中继站上、 辅聚合载波分配到基站上； 或者具体确定： 主聚 合载波分配到基站上、 辅聚合载波分配到中继站上。
9、 根据权利要求 8所述的装置， 其特征在于， 所述第二确定单元进一 步确定主聚合载波及辅聚合载波中各分量载波的频带宽度及分量载波的数 量。
10、 根据权利要求 6所述的装置， 其特征在于， 所述装置还包括： 第三确定单元， 用于根据当前网络中接入的用户终端确定当前的主聚 合载波， 所述当前的主聚合载波后向兼容当前接入网络仅支持单载波的用 户终端。
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| KR20160092771A (ko) * | 2015-01-28 | 2016-08-05 | 삼성전자주식회사 | 무선 통신 시스템에서 망 정보 분석 장치 및 방법 |
| US20180006862A1 (en) * | 2015-01-28 | 2018-01-04 | Samsung Electronics Co., Ltd. | Device and method for network information analysis in wireless communication system |
| US10355902B2 (en) * | 2015-01-28 | 2019-07-16 | Samsung Electronics Co., Ltd. | Device and method for network information analysis in wireless communication system |
| KR102307401B1 (ko) | 2015-01-28 | 2021-09-30 | 삼성전자주식회사 | 무선 통신 시스템에서 망 정보 분석 장치 및 방법 |
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| CN101998630A (zh) | 2011-03-30 |
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