WO2011153864A1 - 一种资源调度/授权方法 - Google Patents

一种资源调度/授权方法 Download PDF

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Publication number
WO2011153864A1
WO2011153864A1 PCT/CN2011/072292 CN2011072292W WO2011153864A1 WO 2011153864 A1 WO2011153864 A1 WO 2011153864A1 CN 2011072292 W CN2011072292 W CN 2011072292W WO 2011153864 A1 WO2011153864 A1 WO 2011153864A1
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Prior art keywords
enodeb
srs signal
uplink
intermediate node
information
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PCT/CN2011/072292
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English (en)
French (fr)
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易三军
吴迪
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普天信息技术研究院有限公司
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Publication of WO2011153864A1 publication Critical patent/WO2011153864A1/zh

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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

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a resource scheduling/authorization method. Background of the invention
  • the relay node is an intermediate node between the base station (eNodeB) and the user equipment (UE), and forwards the uplink and downlink traffic channels to increase system coverage and increase system capacity.
  • the intermediate node may also be a small base station working with the eNodeB, such as a micro base station or a home base station.
  • Figure 1 is a schematic diagram of the relationship between an RN, a UE, and an eNodeB. The present invention is applied to systems of LTE systems, WiMAX systems, and other application relay nodes RN.
  • the RN is generally defined as two types: a first type (Typel) and a second type (Type2), wherein the Typel RN is non-transparent to the UE, and the Type2 RN is to the UE.
  • the main feature of the Type 2 RN is that the control signaling between the UE and the eNodeB is not forwarded by the RN, that is, the control signaling interaction between the UE and the eNodeB is directly performed, and the uplink and downlink traffic channels are forwarded by the RN.
  • the eNodeB determines the resource scheduling information and the downlink MCS mode according to the uplink channel state information CSI between the UE and the eNodeB, and determines according to the uplink channel state information between the UE and the eNodeB.
  • the resource authorization information and the uplink MCS mode that is, the scheduling/authorization of the resources in the RN service range by the eNodeB is based on the uplink channel condition between the UE and the eNodeB, but In the inter-application, the uplink and downlink traffic channels of the UE in the RN service range are not directly transmitted through the uplink and downlink channels between the UE and the eNodeB, but are forwarded through the RN, and are visible according to the uplink channel condition between the UE and the eNodeB.
  • the power control, resource scheduling/authorization method does not necessarily accurately adapt to the uplink and downlink channel conditions between the UE and the RN, thus reducing the wireless performance of the system. Summary of the invention
  • the embodiments of the present invention provide a resource scheduling/authorization method, which can improve the wireless performance of the system.
  • a resource scheduling/authorization method comprising:
  • the intermediate node obtains the uplink channel state information CSI between the UE and the intermediate node according to the received listening SRS signal from the user equipment UE, and reports the uplink channel state information to the eNodeB;
  • the eNodeB determines the downlink modulation and coding MCS mode and the resource scheduling information by using the reciprocity of the uplink and downlink channels according to the uplink channel state information, and determines an uplink modulation and coding MCS mode and resource authorization information according to the uplink channel state information, and The resource scheduling information and the resource authorization information are informed to the UE.
  • a resource scheduling/authorization system comprising: a user equipment UE, an intermediate node, and a base station eNodeB;
  • the UE is configured to send a listening SRS signal to the intermediate node
  • the intermediate node configured to acquire uplink channel state information CSI between the UE and the intermediate node according to the received listening SRS signal from the UE, and report the uplink channel state information to the base station eNodeB;
  • the eNodeB is configured to determine, according to the uplink channel state information, a downlink modulation and coding MCS mode and resource scheduling information by using reciprocity of the uplink and downlink channels, and determine an uplink modulation and coding MCS mode and resources according to the uplink channel state information.
  • Authorization information and inform the UE of resource scheduling information and resource authorization information. .
  • the intermediate node acquires the uplink channel state information between the UE and the intermediate node, and reports the uplink channel state information to the eNodeB, and the eNodeB according to the uplink channel state information between the UE and the intermediate node
  • the channel channel reciprocity determines the downlink MCS mode and the resource scheduling information, determines the uplink MCS mode and the resource grant information according to the uplink channel state information between the UE and the RN, and sends the resource scheduling information and the resource grant information to the UE.
  • the embodiment of the present invention performs resource scheduling/authorization according to the uplink channel condition between the UE and the intermediate node
  • the provided resource scheduling/authorization method and system can accurately adapt to the uplink and downlink channel conditions between the UE and the intermediate node. Really realize the negotiation scheduling between the intermediate node and the eNodeB, and improve the wireless performance of the system.
  • FIG. 1 is a schematic diagram of a relationship between an RN, a UE, and an eNodeB;
  • FIG. 4 is a flowchart of a resource scheduling/authorization method according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a resource scheduling method according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a resource authorization method according to an embodiment of the present invention. Mode for carrying out the invention
  • FIG. 2 is a flowchart of a resource scheduling method in the prior art. As shown in FIG. 2, the resource scheduling method in the prior art includes the following steps:
  • Step 201 The eNodeB notifies the UE of the parameters of the SRS signal, where the parameters of the SRS signal include time-frequency resources and other parameters occupied by the SRS signal, for example, a transmission period of the SRS signal, where the aperiodic SRS signal is regarded as It is a special case of periodic SRS.
  • the SRS signal is a reference signal used by the UE for channel sounding.
  • the UE sends an SRS signal to the eNodeB, and in this step, the eNodeB informs the UE of the parameters of the SRS signal that the UE is to send, in a subsequent step.
  • the UE sends the SRS signal according to the parameters of the SRS signal.
  • the manner in which the parameters of the SRS signal are notified can be implemented in a specific manner such as the system information SIB notification.
  • Step 202 The UE sends an SRS signal to the eNodeB according to the parameter of the SRS signal.
  • the UE sends an SRS signal to the eNodeB according to the specified time-frequency resource and other parameters according to the time-frequency resource and other parameters included in the parameter of the SRS signal in step 201.
  • Step 203 The eNodeB parses the SRS signal to obtain uplink channel state information between the UE and the eNodeB.
  • the uplink channel state information can be directly obtained by parsing the SRS signal.
  • the uplink channel state information may include: information such as uplink channel quality, SRS signal strength, and frequency selection characteristics of the uplink channel.
  • Step 204 The eNodeB determines a downlink modulation and coding (MCS) mode and resource scheduling information according to uplink channel state information between the UE and the eNodeB and reciprocity of the uplink and downlink channels.
  • MCS modulation and coding
  • the SRS signal is an uplink signal, but the detection result of the SRS signal can be used as a basis for downlink channel scheduling according to the reciprocity of the uplink and downlink channels.
  • the eNodeB determines the MCS mode selected by the eNodeB and the downlink frequency selection scheduling result according to the reciprocity of the uplink and downlink channels according to the reciprocity of the uplink and downlink channels, and the downlink frequency selection scheduling result is the resource scheduling information.
  • the step 204 is only one of the specific implementation manners of the method for determining the downlink MCS mode and the resource scheduling information.
  • the eNodeB may also refer to the UE to receive the downlink guide.
  • the downlink MCS mode is determined by reporting the information after the frequency.
  • Step 205 The eNodeB informs the UE of the resource scheduling information, to notify the UE to receive the service channel on the corresponding time-frequency resource according to the resource scheduling information.
  • Step 206 The eNodeB sends the downlink traffic channel by using the determined downlink MCS mode. According to the downlink MCS mode determined in step 204, the eNodeB sends the next service channel to the RN.
  • Step 207 The RN forwards the received downlink traffic channel to the UE.
  • Step 208 The UE receives the downlink traffic channel according to the resource scheduling information.
  • the UE receives the downlink traffic channel on the corresponding time-frequency resource according to the resource scheduling information in step 205.
  • FIG. 3 is a flowchart of a resource authorization method in the prior art.
  • the resource authorization method in the prior art includes the following steps:
  • Step 301 The eNodeB notifies the UE of the parameters of the SRS signal.
  • Step 301 is the same as step 201, and reference may be made to the related description of step 201.
  • Step 302 The UE sends an SRS signal to the eNodeB according to the parameter of the SRS signal. Step 302 is the same as step 202, and reference may be made to the related description of step 202.
  • Step 303 The eNodeB parses the SRS signal to obtain uplink channel state information between the UE and the eNodeB.
  • the SRS signal is an uplink signal.
  • a series of uplink channel state information such as uplink channel quality, SRS signal strength, and uplink channel frequency selection characteristics can be obtained.
  • Step 304 The eNodeB determines an uplink MCS mode, power control information, and resource authorization information according to uplink channel state information between the UE and the eNodeB.
  • the eNodeB determines, according to the uplink channel state information, the uplink MCS mode, the power control information, and the uplink frequency selection scheduling result that are selected when the UE sends the uplink data channel to the eNodeB, where the uplink frequency selection scheduling result is resource authorization information.
  • Step 305 The eNodeB informs the UE of the determined uplink MCS mode, power control information, and resource grant information, and notifies the UE to send the uplink traffic channel on the corresponding time-frequency resource according to the resource grant information.
  • Step 306 The UE sends an uplink traffic channel to the RN according to the received uplink MCS mode, power control information, and resource authorization information.
  • Step 307 The RN forwards the received uplink traffic channel to the eNodeB.
  • Step 308 The eNodeB receives the uplink traffic channel on the corresponding time-frequency resource.
  • the RN is used as an intermediate node between the eNodeB and the UE, and the resource scheduling/authorization method in the prior art is introduced.
  • the intermediate node is used. It can also be any node that works in conjunction with the eNodeB, such as a micro base station or a home base station.
  • FIG. 4 is a flowchart of a resource scheduling/authorization method according to an embodiment of the present invention. As shown in Figure 4, the method includes the following steps:
  • Step 401 The RN acquires uplink channel state information between the UE and the RN according to the received SRS signal from the UE, and reports the uplink channel state information to the eNodeB.
  • Step 402 The eNodeB determines the downlink MCS mode and resource scheduling information by using the reciprocity of the uplink and downlink channels according to the uplink channel state information, and determines the uplink MCS mode and resource authorization information according to the uplink channel state information, and the resource is used. The scheduling information and the resource authorization information are informed to the UE.
  • the technical solution of the present invention is described by taking the RN as an intermediate node between the eNodeB and the UE.
  • the intermediate node may also be any working in cooperation with the eNodeB.
  • a node such as a base station or a home base station.
  • FIG. 5 is a flowchart of a resource scheduling method according to an embodiment of the present invention. As shown in FIG. 5, in step 501, the eNodeB notifies the RN of the parameters of the SRS signal.
  • the UE will send an SRS signal to the RN, and in this step, the eNodeB informs the RN of the parameters of the SRS signal to be sent by the UE, so that the RN subsequently detects the SRS signal.
  • Step 502 The eNodeB notifies the UE of the parameters of the SRS signal.
  • the parameters of the SRS signal in step 502 and step 501 are the same, and both include time-frequency resources and other parameters occupied by the SRS signal.
  • Step 502 is the same as step 201 in the prior art, and details are not described herein.
  • steps 501 and 502 are not limited.
  • Step 503 The UE sends an SRS signal according to a parameter of the SRS signal.
  • the UE sends an SRS signal to the base station and the RN according to the specified time-frequency resource and other parameters according to the time-frequency resource and other parameters included in the SRS signal information in step 502.
  • Step 504 The RN receives the SRS signal sent by the UE according to the parameter of the SRS signal, and parses the SRS signal to obtain uplink channel state information between the UE and the RN.
  • the method for parsing the SRS signal is the same as the prior art, and may be referred to the content of the prior art, and details are not described herein.
  • the content included in the uplink channel state information is related to the complexity of the RN. Generally, the higher the complexity of the RN and the stronger the RN resolution capability, the more content the uplink channel state information includes.
  • the uplink channel state information between the UE and the RN includes the following: uplink channel quality between the UE and the RN, SRS signal strength, SRS signal angle of arrival (DOA), channel space characteristics, and between the UE and the RN. Frequency selection characteristics of the uplink channel, and the like.
  • Step 505 The RN reports the uplink channel state information between the UE and the RN to the eNodeB.
  • the RN reports the uplink channel state information between the UE and the RN to the eNodeB, which is used as a basis for resource scheduling of the subsequent eNodeB.
  • Step 506 The eNodeB determines the downlink MCS mode and resource scheduling information according to the uplink channel state information between the UE and the RN, and the reciprocity of the uplink and downlink channels.
  • the method for determining the downlink MCS mode and the resource scheduling information according to the uplink channel state information is the same as that of the prior art.
  • the difference between this step and the prior art is:
  • the eNodeB determines the basis of the downlink MCS mode and the resource scheduling information as the UE.
  • the uplink channel state information between the UE and the RN is determined by the eNodeB determining the uplink channel state information of the downlink MCS mode and the RN forwarding the downlink traffic channel, that is, determining the uplink channel state information between the UE and the RN.
  • the basis of the downlink MCS mode and resource scheduling information is different from the prior art.
  • Step 507 The eNodeB informs the UE of the resource scheduling information, to notify the UE to receive the downlink traffic channel on the corresponding time-frequency resource according to the resource scheduling information. Traffic channel.
  • Step 509 The RN forwards the received downlink traffic channel to the UE.
  • Step 510 The UE receives the downlink traffic channel according to the resource scheduling information.
  • the technical solution of the present invention is described by taking the RN as an intermediate node between the eNodeB and the UE.
  • the intermediate node may also be any working in cooperation with the eNodeB.
  • a node such as a base station or a home base station.
  • FIG. 6 is a flowchart of a resource authorization method according to an embodiment of the present invention. As shown in FIG. 6, the resource authorization method provided by the embodiment of the present invention includes the following steps:
  • Step 601 The eNodeB notifies the RN of the parameters of the SRS signal.
  • Step 602 The eNodeB notifies the UE of the parameters of the SRS signal.
  • Step 603 The UE sends an SRS signal according to a parameter of the SRS signal.
  • Steps 601 to 603 are the same as steps 501 to 503, and the contents of steps 501 to 503 can be referred to.
  • Step 604 The RN receives the SRS signal sent by the UE according to the parameter of the SRS signal, and parses the SRS signal to obtain uplink channel state information between the UE and the RN.
  • the method for parsing the SRS signal is the same as the prior art, and the content of the prior art can be referred to, and details are not described herein.
  • the content included in the uplink channel state information is related to the complexity of the RN. Generally, the higher the complexity of the RN and the stronger the RN resolution capability, the more content the uplink channel state information includes.
  • the uplink channel state information between the UE and the RN includes the following: uplink channel quality between the UE and the RN, SRS signal strength, SRS signal arrival angle (DOA), channel space characteristics, and between the UE and the RN. Frequency selection characteristics of the uplink channel, and the like.
  • Step 605 The RN reports the uplink channel state information between the UE and the RN to the eNodeB.
  • the RN reports the uplink channel state information between the UE and the RN obtained by the RN to the RN.
  • the eNodeB is used as a basis for resource authorization and uplink power control of the eNodeB to the UE in a subsequent step.
  • Step 606 The eNodeB determines the uplink MCS mode, the power control information, and the resource authorization information according to the uplink channel state information between the UE and the RN.
  • the method for determining the uplink MCS mode, the power control information, and the resource authorization information according to the uplink channel state information may refer to the prior art.
  • the difference between this step and the prior art is:
  • the eNodeB determines the uplink MCS mode and the power control information.
  • the resource authorization information is based on the uplink channel state information between the UE and the RN.
  • the eNodeB determines the uplink MCS mode, the power control information, and the uplink resource scheduling information as the uplink channel state between the UE and the RN. information.
  • Step 607 The eNodeB informs the UE of the uplink MCS mode, the power control information, and the resource authorization information, to notify the UE to send the uplink traffic channel on the corresponding time-frequency resource according to the resource authorization information.
  • Step 608 The UE sends an uplink traffic channel to the RN according to the received uplink MCS mode, power control information, and resource authorization information.
  • Step 609 The RN forwards the received uplink traffic channel to the eNodeB.
  • Step 610 The eNodeB receives an uplink traffic channel on a corresponding time-frequency resource.
  • the technical solution of the present invention is described by taking the RN as an intermediate node between the eNodeB and the UE.
  • the intermediate node may also be any working in cooperation with the eNodeB.
  • a node such as a base station or a home base station.
  • the embodiment of the present invention further provides a resource scheduling/authorization system, where the system includes: a user equipment UE, an intermediate node, and a base station eNodeB; a UE, configured to send a listening SRS signal to the intermediate node;
  • An intermediate node configured to acquire uplink channel state information between the UE and the intermediate node according to the received listening SRS signal from the UE, and report the uplink channel state information to the base station eNodeB;
  • the eNodeB is configured to determine, according to the uplink channel state information, the downlink modulation and coding MCS mode and the resource scheduling information by using the reciprocity of the uplink and downlink channels, and determine an uplink modulation and coding MCS mode and resource authorization information according to the uplink channel state information, and The resource scheduling information and the resource authorization information are notified to the UE.
  • the eNodeB is further configured to notify the intermediate node of the parameter that the UE listens to the SRS signal, and notify the UE of the parameter of the SRS signal; the UE is further configured to send the SRS signal according to the parameter of the SRS signal; and the intermediate node is used according to the SRS.
  • the parameter of the signal receives the SRS signal sent by the UE, and parses the SRS signal to obtain uplink channel state information between the UE and the intermediate node.
  • the parameters of the SRS signal include: a time-frequency resource occupied by the SRS signal and a period of the SRS signal;
  • the uplink channel state information includes: an uplink channel quality, an SRS signal strength, and an SRS signal wave between the UE and the intermediate node.
  • the eNodeB is further configured to send the downlink traffic channel to the intermediate node by using the determined downlink MCS mode; the intermediate node is further configured to forward the received downlink traffic channel to the UE.
  • the eNodeB is further configured to determine the power control information according to the uplink channel state information, and notify the UE of the determined power control information; the UE is further configured to: according to the received uplink MCS mode, power control information, and resource authorization information, The intermediate node sends an uplink traffic channel; the intermediate node is further configured to forward the received uplink traffic channel to the eNodeB.
  • the intermediate node is any node that works in cooperation with the eNodeB, where the arbitrary node is a relay node RN or a micro base station or a home base station.
  • the RN acquires uplink channel state information between the UE and the RN, and uploads the uplink channel state information to the eNodeB, and the eNodeB according to the uplink channel state information and the uplink and downlink channel between the UE and the RN.
  • the reciprocity determines the downlink MCS mode and the resource scheduling information, determines the uplink MCS mode and the resource authorization information according to the uplink channel state information between the UE and the RN, and sends the resource scheduling information and the resource authorization information to the UE, which is visible.
  • the embodiment of the invention performs resource scheduling/authorization according to the uplink channel condition between the UE and the RN.
  • the provided resource scheduling/authorization method and system can accurately adapt to the uplink and downlink channel conditions between the UE and the RN, and truly implement the RN and the eNodeB.
  • Negotiated scheduling improves the wireless performance of the system.
  • the technical solution of the present invention is introduced by taking the RN as an intermediate node between the eNodeB and the UE.
  • the intermediate node may also work in cooperation with the eNodeB. Any node, such as a micro base station or a home base station.

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Description

一种资源调度 /授权方法
技术领域
本发明涉及移动通讯领域， 特别涉及一种资源调度 /授权方法。 发明背景
随着无线通讯技术的发展， 无线中继技术得到广泛重视， 如第三代 移动通信系统标准化伙伴项目 （3GPP )提出的长期演进（LTE ) 系统， 与全球微波互联接入（WiMAX ) 系统等主要的体系都有提及。 在 LTE 系统和 WiMAX系统中， 中继节点 （ RN ) 为基站（ eNodeB )与用户设 备（UE )之间的中间节点， 通过转发上下行业务信道， 以增加系统覆盖 并提高系统容量。 在现有技术中， 该中间节点也可以为与 eNodeB协同 工作的小型基站， 例如微基站或家庭基站等。 这里以 RN为例对现有技 术进行说明。 图 1为 RN、 UE和 eNodeB之间的关系示意图。 本发明应 用于 LTE系统、 WiMAX系统和其他应用中继节点 RN的系统。
依据 RN对 UE而言是否透明， 一般将 RN定义为两种类型： 第一 类型 （ Typel )和第二类型 （ Type2 )， 其中 Typel的 RN对 UE而言是非 透明的， Type2的 RN对 UE而言是透明的， Type2的 RN的主要特点是： UE和 eNodeB之间的控制信令不通过 RN转发， 即 UE和 eNodeB之间 直接进行控制信令的交互， 而上下行业务信道由 RN转发。
在现有技术所提供的资源调度 /授权方法中， eNodeB 根据 UE和 eNodeB之间的上行信道状态信息 CSI, 确定资源调度信息和下行 MCS 方式， 根据 UE和 eNodeB之间的上行信道状态信息， 确定资源授权信 息和上行 MCS方式， 也就是说， eNodeB对 RN服务范围内的资源的调 度 /授权是基于 UE和 eNodeB之间的上行信道情况进行的， 但是， 在实 际应用中， RN服务范围内 UE的上下行业务信道并不通过 UE和 eNodeB 之间的上下行信道直接传输， 而是通过 RN转发， 可见， 根据 UE和 eNodeB之间的上行信道情况所确定的功率控制， 资源调度 /授权方法并 不一定能够准确适应 UE和 RN之间的上下行信道情况， 因而降低了系 统的无线性能。 发明内容
有鉴于此， 本发明实施例提供了一种资源调度 /授权方法， 其能够提 高系统的无线性能。
为了解决上述技术问题， 本发明实施例提供的技术方案是这样实现 的：
一种资源调度 /授权方法， 该方法包括：
中间节点根据所接收的来自用户设备 UE的侦听 SRS信号获取 UE 和中间节点之间的上行信道状态信息 CSI, 并将上行信道状态信息上报 至 eNodeB;
eNodeB 根据所述上行信道状态信息， 利用上下行信道的互易性， 确定下行调制编码 MCS方式和资源调度信息， 根据所述上行信道状态 信息， 确定上行调制编码 MCS方式和资源授权信息， 并将资源调度信 息和资源授权信息告知 UE。
一种资源调度 /授权系统， 包括： 用户设备 UE、 中间节点和基站 eNodeB;
所述 UE, 用于向中间节点发送侦听 SRS信号；
所述中间节点， 用于根据所接收的来自 UE的侦听 SRS信号获取 UE和中间节点之间的上行信道状态信息 CSI,并将上行信道状态信息上 报至基站 eNodeB; 所述 eNodeB, 用于根据所述上行信道状态信息， 利用上下行信道 的互易性， 确定下行调制编码 MCS方式和资源调度信息， 根据所述上 行信道状态信息， 确定上行调制编码 MCS方式和资源授权信息， 并将 资源调度信息和资源授权信息告知 UE。。
根据本发明实施例提供的技术方案， 中间节点获取 UE和中间节点 之间的上行信道状态信息， 并将上行信道状态信息上报至 eNodeB , eNodeB根据 UE和中间节点之间的上行信道状态信息和上下行信道互 易性确定下行 MCS方式和资源调度信息，根据 UE和 RN之间的上行信 道状态信息确定上行 MCS方式和资源授权信息， 并将资源调度信息和 资源授权信息发送至 UE。可见， 由于本发明实施例根据 UE和中间节点 之间的上行信道情况进行资源调度 /授权， 因此所提供的资源调度 /授权 方法和系统能够准确适应 UE和中间节点之间的上下行信道情况， 真正 实现了中间节点与 eNodeB的协商调度， 提高了系统的无线性能。 附图简要说明
图 1为 RN、 UE和 eNodeB之间的关系示意图；
图 2为现有技术中的资源调度方法的流程图；
图 3为现有技术中的资源授权方法的流程图；
图 4为本发明实施例所提供的一种资源调度 /授权方法的流程图； 图 5为本发明实施例所提供的资源调度方法的流程图；
图 6为本发明实施例所提供的资源授权方法的流程图。 实施本发明的方式
基于 Type2的 RN, 下面对现有技术中的资源调度和授权方法进行 介绍， 需要说明的是， 本发明实施例所述 UE位于 RN的服务范围内。 以下行业务信道为例，图 2为现有技术中的资源调度方法的流程图。 如图 2所示， 现有技术中的资源调度方法包括以下步骤：
步骤 201 , eNodeB向 UE通知侦听（ SRS )信号的参数， 其中， SRS 信号的参数包括 SRS信号所占用的时频资源和其他参数， 例如， SRS信 号的发送周期， 其中非周期性 SRS信号视为周期 SRS的特例。
SRS信号是 UE发送的用于信道探测的参考信号， 在后续步骤中， UE将向 eNodeB发送 SRS信号， 而在本步骤中， eNodeB向 UE告知 UE将要发送的 SRS信号的参数， 在后续步骤中， UE按照该 SRS信号 的参数发送 SRS信号。
通知 SRS信号的参数的方式可通过系统信息 SIB告知等具体方式实 现。
步骤 202, UE根据 SRS信号的参数， 向 eNodeB发送 SRS信号。 UE根据步骤 201中 SRS信号的参数所包括的时频资源和其他参数， 按照所指定的时频资源和其他参数向 eNodeB发送 SRS信号。
步骤 203, eNodeB解析 SRS信号， 得到 UE和 eNodeB之间的上行 信道状态信息。
由于 SRS信号是上行信号，解析 SRS信号可直接得到上行信道状态 信息。
上行信道状态信息可包括： 上行行信道质量、 SRS信号强度和上行 信道的频选特性等信息。
步骤 204, eNodeB根据 UE和 eNodeB之间的上行信道状态信息以 及上下行信道的互易性， 确定下行调制编码（MCS )方式和资源调度信 息。
SRS信号是上行信号， 但是可以根据上下行信道的互易性， 将 SRS 信号的检测结果用作下行信道调度的依据。 eNodeB将上行信道状态信息作为依据，根据上下行信道的互易性确 定下行数据信道发送时 eNodeB所选择的 MCS方式，以及下行频选调度 结果， 所述下行频选调度结果即资源调度信息。
另外， 还需要说明的是， 步骤 204只是作为确定下行 MCS方式和 资源调度信息的方法的若干种具体实施方式中的一种举例说明， 例如， 在实际应用中， eNodeB也可以参考 UE接收下行导频后的上报信息而确 定下行 MCS方式。
步骤 205, eNodeB向 UE告知资源调度信息， 以通知 UE按照资源 调度信息在相应的时频资源上接收业务信道。
步骤 206, eNodeB采用所确定的下行 MCS方式发送下行业务信道。 根据步骤 204所确定的下行 MCS方式， eNodeB向 RN发送下行业 务信道。
步骤 207 , RN将接收到的下行业务信道转发给 UE。
步骤 208, UE根据资源调度信息接收下行业务信道。
在本步骤中， UE按照步骤 205中的资源调度信息，在相应的时频资 源上接收下行业务信道。
至此， 本流程结束。
以上行业务信道为例，图 3为现有技术中的资源授权方法的流程图。 如图 3所示， 现有技术中的资源授权方法包括以下步骤：
步骤 301 , eNodeB向 UE通知 SRS信号的参数。
步骤 301与步骤 201相同， 可参考步骤 201的相关介绍。
步骤 302, UE根据 SRS信号的参数， 向 eNodeB发送 SRS信号。 步骤 302与步骤 202相同， 可参考步骤 202的相关介绍。
步骤 303, eNodeB解析 SRS信号， 得到 UE和 eNodeB之间的上行 信道状态信息。 SRS信号是上行信号， 通过对 SRS信号的解析， 可得到上行信道质 量、 SRS信号强度和上行信道频选特性等一系列上行信道状态信息。
步骤 304, eNodeB根据 UE和 eNodeB之间的上行信道状态信息， 确定上行 MCS方式， 功率控制信息和资源授权信息。
eNodeB将上行信道状态信息作为依据， 确定 UE向 eNodeB发送上 行数据信道时所选择的上行 MCS方式、 功率控制信息和以及上行频选 调度结果， 所述上行频选调度结果即资源授权信息。
步骤 305, eNodeB向 UE告知所确定的上行 MCS方式、 功率控制 信息和资源授权信息， 通知 UE按照资源授权信息在相应的时频资源上 发送上行业务信道。
步骤 306, UE根据接收到的上行 MCS方式， 功率控制信息和资源 授权信息， 向 RN发送上行业务信道。
步骤 307, RN将接收到的上行业务信道转发给 eNodeB。
步骤 308, eNodeB在相应的时频资源上接收上行业务信道。
至此， 本流程结束。
在上述图 2和图 3描述的实施例中， 以 RN作为 eNodeB与 UE之 间的中间节点为例， 对现有技术中的资源调度 /授权方法进行介绍， 在其 它实施例中， 该中间节点也可以为与 eNodeB协同工作的任意节点， 例 如微基站或家庭基站等。
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， 对本发明所述方案作进一步地详细说明。
图 4为本发明实施例所提供的一种资源调度 /授权方法的流程图。如 图 4所示， 该方法包括以下步骤：
步骤 401 , RN根据所接收的来自 UE的 SRS信号获取 UE和 RN之 间的上行信道状态信息， 并将上行信道状态信息上报至 eNodeB。 步骤 402, eNodeB根据所述上行信道状态信息， 利用上下行信道的 互易性， 确定下行 MCS方式和资源调度信息， 根据所述上行信道状态 信息， 确定上行 MCS方式和资源授权信息， 并将资源调度信息和资源 授权信息告知 UE。
需要注意的是， 在本实施例中， 以 RN作为 eNodeB与 UE之间的 中间节点为例对本发明的技术方案进行介绍， 在其它实施例中， 该中间 节点也可以为与 eNodeB协同工作的任意节点， 例如 基站或家庭基站 等。
下面通过两个实施例对本发明进行详细介绍。
图 5为本发明实施例所提供的资源调度方法的流程图。如图 5所示， 步骤 501 , eNodeB向 RN告知 SRS信号的参数。
在后续步骤中， UE将向 RN发送 SRS信号，而在本步骤中， eNodeB 向 RN告知 UE将要发送的 SRS信号的参数，以便于 RN后续检测到 SRS 信号。
步骤 502, eNodeB向 UE通知 SRS信号的参数。
步骤 502和步骤 501中的 SRS信号的参数相同， 均包括 SRS信号 所占用的时频资源和其他参数。
步骤 502与现有技术中的步骤 201相同， 此处不予赘述。
还需要说明的是， 步骤 501和 502的执行先后顺序没有限定。
步骤 503, UE根据 SRS信号的参数， 发送 SRS信号。
UE根据步骤 502中的 SRS信号信息所包括的时频资源和其他参数， 按照所指定的时频资源和其他参数向基站与 RN发送 SRS信号。
步骤 504, RN根据 SRS信号的参数接收 UE所发送的 SRS信号， 并解析 SRS信号， 得到 UE和 RN之间的上行信道状态信息。 其中， 解析 SRS信号的方法与现有技术相同， 可参考现有技术的内 容， 此处不予赘述。
另外， 需要说明的是， 上行信道状态信息所包含的内容与 RN的复 杂程度相关， 一般来说， RN的复杂程度越高， RN的解析能力越强， 则 上行信道状态信息所包含的内容越多， 通常 UE和 RN之间的上行信道 状态信息包含如下内容： UE和 RN之间的上行信道质量、 SRS信号强 度、 SRS信号波达角（DOA ), 信道空间特征以及 UE和 RN之间的上行 信道的频选特性等。
步骤 505, RN向 eNodeB上报 UE和 RN之间的上行信道状态信息。 在本步骤中， RN将解析后得到的 UE和 RN之间的上行信道状态信 息上报给 eNodeB, 用于作为后续 eNodeB进行资源调度的依据。
步骤 506, eNodeB根据 UE和 RN之间的上行信道状态信息， 以及 上下行信道的互易性， 确定下行 MCS方式和资源调度信息。
根据上行信道状态信息确定下行 MCS方式和资源调度信息的方法与 现有技术相同， 本步骤与现有技术的区别在于： 在现有技术中， eNodeB 确定下行 MCS方式和资源调度信息的依据为 UE和 eNodeB之间的上行 信道状态信息， 而在本步骤中， eNodeB确定下行 MCS方式和 RN转发 下行业务信道的资源调度信息的依据为 UE和 RN之间的上行信道状态 信息， 也就是说， 确定下行 MCS方式和资源调度信息的依据与现有技 术存在不同。
步骤 507, eNodeB向 UE告知资源调度信息， 以通知 UE按照资源 调度信息在相应的时频资源上接收下行业务信道。 务信道。
步骤 509, RN将接收到的下行业务信道转发给 UE。 步骤 510, UE根据资源调度信息接收下行业务信道。
至此， 本流程结束。
需要注意的是， 在本实施例中， 以 RN作为 eNodeB与 UE之间的 中间节点为例对本发明的技术方案进行介绍， 在其它实施例中， 该中间 节点也可以为与 eNodeB协同工作的任意节点， 例如 基站或家庭基站 等。
图 6为本发明实施例所提供的资源授权方法的流程图。如图 6所示， 本发明实施例所提供的资源授权方法包括以下步骤：
步骤 601 , eNodeB向 RN告知 SRS信号的参数。
步骤 602, eNodeB向 UE通知 SRS信号的参数。
步骤 603, UE根据 SRS信号的参数， 发送 SRS信号。
步骤 601至 603与步骤 501至 503相同， 可参考步骤 501至 503的 内容。
步骤 604, RN根据 SRS信号的参数接收 UE所发送的 SRS信号， 并解析 SRS信号， 得到 UE和 RN之间的上行信道状态信息。
其中， 解析 SRS信号的方法与现有技术相同， 可参考现有技术的内 容， 此处不予赘述。
另外， 需要说明的是， 上行信道状态信息所包含的内容与 RN的复 杂程度相关， 一般来说， RN的复杂程度越高， RN的解析能力越强， 则 上行信道状态信息所包含的内容越多， 通常 UE和 RN之间的上行信道 状态信息包含如下内容： UE和 RN之间的上行信道质量、 SRS信号强 度、 SRS信号波达角（DOA ), 信道空间特征和 UE和 RN之间的上行信 道的频选特性等。
步骤 605, RN向 eNodeB上报 UE和 RN之间的上行信道状态信息。
RN将解析后得到的 UE 和 RN之间的上行信道状态信息上报给 eNodeB , 用于作为在后续步骤中 eNodeB对 UE进行资源授权与上行功 率控制的依据。
步骤 606, eNodeB根据 UE和 RN之间的上行信道状态信息， 确定 上行 MCS方式、 功率控制信息和资源授权信息。
根据上行信道状态信息确定上行 MCS方式、 功率控制信息和资源授 权信息的方法可参考现有技术， 本步骤与现有技术的区别在于： 在现有 技术中， eNodeB确定上行 MCS方式、 功率控制信息和资源授权信息的 依据为 UE和 eNodeB之间的上行信道状态信息，而在本步骤中， eNodeB 确定上行 MCS 方式、 功率控制信息和上行资源调度信息的依据为 UE 和 RN之间的上行信道状态信息。
步骤 607, eNodeB向 UE告知上行 MCS方式、 功率控制信息和资 源授权信息， 以通知 UE按照资源授权信息在相应的时频资源上发送上 行业务信道。
步骤 608, UE根据接收到的上行 MCS方式， 功率控制信息和资源 授权信息， 向 RN发送上行业务信道。
步骤 609, RN将接收到的上行业务信道转发给 eNodeB。
步骤 610, eNodeB在相应的时频资源上接收上行业务信道。
至此， 本流程结束。
需要注意的是， 在本实施例中， 以 RN作为 eNodeB与 UE之间的 中间节点为例对本发明的技术方案进行介绍， 在其它实施例中， 该中间 节点也可以为与 eNodeB协同工作的任意节点， 例如 基站或家庭基站 等。
基于上述实施例提供的资源调度 /授权方法，本发明实施例还提供了 一种资源调度 /授权系统， 该系统包括： 用户设备 UE、 中间节点和基站 eNodeB; 其中 UE, 用于向中间节点发送侦听 SRS信号；
中间节点， 用于根据所接收的来自 UE的侦听 SRS信号获取 UE和 中间节点之间的上行信道状态信息， 并将上行信道状态信息上报至基站 eNodeB;
eNodeB,用于根据该上行信道状态信息，利用上下行信道的互易性， 确定下行调制编码 MCS方式和资源调度信息， 根据该上行信道状态信 息， 确定上行调制编码 MCS方式和资源授权信息， 并将资源调度信息 和资源授权信息告知 UE。
在本实施例中， eNodeB进一步用于向中间节点告知 UE侦听 SRS 信号的参数， 向 UE通知 SRS信号的参数； UE进一步用于根据 SRS信 号的参数， 发送 SRS信号； 中间节点用于根据 SRS信号的参数接收 UE 所发送的 SRS信号， 并解析 SRS信号，得到 UE和中间节点之间的上行 信道状态信息。
在本实施例中， SRS信号的参数包括： SRS信号所占用的时频资源 和 SRS信号的周期； 上行信道状态信息包括： UE和中间节点之间的上 行信道质量、 SRS信号强度、 SRS信号波达角 DOA, 信道空间特征以 及 UE和中间节点之间的上行信道的频选特性。
在本实施例中， eNodeB进一步用于采用所确定的下行 MCS方式向 中间节点发送下行业务信道； 中间节点进一步用于将接收到的所述下行 业务信道转发至 UE。
在本实施例中， eNodeB 进一步用于根据上行信道状态信息确定功 率控制信息， 将确定的功率控制信息告知 UE; UE进一步用于根据接收 到的上行 MCS方式、 功率控制信息和资源授权信息， 向中间节点发送 上行业务信道； 中间节点进一步用于将接收到的上行业务信道转发给 eNodeB。 在本实施例中， 中间节点为与 eNodeB协同工作的任意节点， 其中 该任意节点为中继节点 RN或微基站或家庭基站。
综上，在本发明实施例中， RN获取 UE和 RN之间的上行信道状态 信息， 并将上行信道状态信息上艮至 eNodeB, eNodeB根据 UE和 RN 之间的上行信道状态信息和上下行信道的互易性确定下行 MCS方式和 资源调度信息， 根据 UE和 RN之间的上行信道状态信息确定上行 MCS 方式和资源授权信息， 并将资源调度信息和资源授权信息发送至 UE, 可见， 由于本发明实施例根据 UE和 RN之间的上行信道情况进行资源 调度 /授权，因此所提供的资源调度 /授权方法和系统能够准确适应 UE和 RN之间的上下行信道情况， 真正实现了 RN与 eNodeB的协商调度，提 高了系统的无线性能。 需要注意的是， 在本发明实施例中， 以 RN作为 eNodeB与 UE之间的中间节点为例对本发明的技术方案进行介绍，在其 它实施例中， 该中间节点也可以为与 eNodeB协同工作的任意节点， 例 如微基站或家庭基站等。
以上所述仅为本发明的较佳实施例， 并不用以限制本发明， 凡在本 发明的精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包 含在本发明的保护范围之内。

Claims

权利要求书
1、 一种资源调度 /授权方法， 其特征在于， 该方法包括：
中间节点根据所接收的来自用户设备 UE的侦听 SRS信号获取 UE 和中间节点之间的上行信道状态信息 CSI, 并将上行信道状态信息上报 至基站 eNodeB;
eNodeB 根据所述上行信道状态信息， 利用上下行信道的互易性， 确定下行调制编码 MCS方式和资源调度信息， 根据所述上行信道状态 信息， 确定上行调制编码 MCS方式和资源授权信息， 并将资源调度信 息和资源授权信息告知 UE。
2、 根据权利要求 1 所述的方法， 其特征在于， 所述中间节点获取 UE和中间节点之间的上行信道状态信息 CSI的方法包括：
eNodeB向中间节点告知 UE侦听 SRS信号的参数；
eNodeB向 UE通知 SRS信号的参数；
UE根据 SRS信号的参数， 发送 SRS信号；
中间节点根据 SRS信号的参数接收 UE所发送的 SRS信号，并解析 SRS信号， 得到 UE和中间节点之间的上行信道状态信息。
3、 根据权利要求 2所述的方法， 其特征在于， 所述 SRS信号的参 数包括： SRS信号所占用的时频资源和 SRS信号的周期。
4、 根据权利要求 1、 2或 3所述的方法， 其特征在于， 所述上行信 道状态信息包括： UE和中间节点之间的上行信道质量、 SRS信号强度、 SRS信号波达角 DOA,信道空间特征以及 UE和中间节点之间的上行信 道的频选特性。
5、 根据权利要求 1、 2或 3所述的方法， 其特征在于， eNodeB将 资源调度信息告知 UE后， 该方法进一步包括： eNodeB 采用所确定的下行 MCS 方式向中间节点发送下行业务信 道；
中间节点将接收到的所述下行业务信道转发至 UE。
6、 根据权利要求 1、 2或 3所述的方法， 其特征在于， 当根据所述 上行信道状态信息， 确定上行调制编码 MCS方式和资源授权信息时， 该方法进一步包括：
eNodeB根据所述上行信道状态信息确定功率控制信息；
eNodeB将所述确定的功率控制信息告知 UE;
eNodeB将所述资源授权信息、 功率控制信息和上行 MCS方式告知 UE后， 该方法进一步包括：
UE根据接收到的所述上行 MCS方式、功率控制信息和资源授权信 息， 向中间节点发送上行业务信道；
中间节点将接收到的所述上行业务信道转发给 eNodeB。
7、 根据权利要求 1、 2或 3所述的方法， 其特征在于， 所述中间节 点为与 eNodeB协同工作的任意节点，其中所述任意节点为中继节点 RN 或微基站或家庭基站。
8、 一种资源调度 /授权系统， 其特征在于， 该系统包括： 用户设备 UE、 中间节点和基站 eNodeB；
所述 UE, 用于向中间节点发送侦听 SRS信号；
所述中间节点， 用于根据所接收的来自 UE的侦听 SRS信号获取 UE和中间节点之间的上行信道状态信息 CSI,并将上行信道状态信息上 才艮至基站 eNodeB;
所述 eNodeB, 用于根据所述上行信道状态信息， 利用上下行信道 的互易性， 确定下行调制编码 MCS方式和资源调度信息， 根据所述上 行信道状态信息， 确定上行调制编码 MCS方式和资源授权信息， 并将 资源调度信息和资源授权信息告知 UE。
9、 根据权利要求 8所述的系统， 其特征在于， 所述 eNodeB进一步 用于向中间节点告知 UE侦听 SRS信号的参数，向 UE通知 SRS信号的 参数；
所述 UE进一步用于根据 SRS信号的参数， 发送 SRS信号； 所述中间节点用于根据 SRS信号的参数接收 UE所发送的 SRS信 号， 并解析 SRS信号， 得到 UE和中间节点之间的上行信道状态信息。
10、 根据权利要求 9所述的系统， 其特征在于， 所述 SRS信号的参 数包括： SRS信号所占用的时频资源和 SRS信号的周期。
11、 根据权利要求 8、 9或 10所述的系统， 其特征在于， 所述上行 信道状态信息包括： UE和中间节点之间的上行信道质量、 SRS信号强 度、 SRS信号波达角 DOA, 信道空间特征以及 UE和中间节点之间的上 行信道的频选特性。
12、根据权利要求 8、 9或 10所述的系统，其特征在于，所述 eNodeB 所述中间节点进一步用于将接收到的所述下行业务信道转发至 UE。
13、根据权利要求 8、 9或 10所述的系统，其特征在于，所述 eNodeB 进一步用于根据所述上行信道状态信息确定功率控制信息， 将所述确定 的功率控制信息告知 UE;
所述 UE进一步用于根据接收到的所述上行 MCS方式、功率控制信 息和资源授权信息， 向中间节点发送上行业务信道；
所述中间节点进一步用于将接收到的所述上行业务信道转发给 eNodeB。
14、 根据权利要求 8、 9或 10所述的系统， 其特征在于， 所述中间 节点为与 eNodeB协同工作的任意节点， 其中所述任意节点为中继节点 RN或微基站或家庭基站
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