WO2018082077A1 - 指示信道状态信息参考信号csi-rs资源的方法、基站和终端设备 - Google Patents

指示信道状态信息参考信号csi-rs资源的方法、基站和终端设备 Download PDF

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Publication number
WO2018082077A1
WO2018082077A1 PCT/CN2016/104798 CN2016104798W WO2018082077A1 WO 2018082077 A1 WO2018082077 A1 WO 2018082077A1 CN 2016104798 W CN2016104798 W CN 2016104798W WO 2018082077 A1 WO2018082077 A1 WO 2018082077A1
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Prior art keywords
csi
terminal device
indication information
signaling
base station
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PCT/CN2016/104798
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English (en)
French (fr)
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刘建琴
刘显达
贺传峰
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华为技术有限公司
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Priority to PCT/CN2016/104798 priority Critical patent/WO2018082077A1/zh
Publication of WO2018082077A1 publication Critical patent/WO2018082077A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling

Definitions

  • the present application relates to the field of communications, and more particularly to a method, base station and terminal device for indicating channel state information reference signal CSI-RS resources.
  • TE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • CSI-RS Channel State Information Reference Signal
  • the terminal device obtains the periodic T CSI-RS and the subframe offset ⁇ CSI-RS transmitted by the CSI-RS in a predefined manner according to the I CSI-RS configured by the base station.
  • the terminal device triggers the reporting of the CSI process by accepting the CSI request field field in the uplink control information (Downlink Control Information (DCI) of the uplink (Uplink, "UL").
  • DCI Downlink Control Information
  • LTE introduces aperiodic CSI-RS transmission.
  • the CSI-RS subframe configuration I CSI-RS is removed from the aperiodic CSI-RS resource.
  • the CSI-RS does not transmit according to the configured period, but the base station dynamically indicates the transmission of the CSI-RS through the UL-related DCI.
  • the transmission of the aperiodic CSI-RS resource and the triggering of the corresponding CSI report are in the same downlink subframe.
  • the base station needs to perform an indication of the corresponding aperiodic CSI-RS resource configuration while the CSI process is triggered to be reported.
  • the base station selects one of the N active acyclic CSI-RS resources to the terminal device, and sends the aperiodic on the physical downlink shared channel (Physical Downlink Shared Channel, referred to as “PDSCH”) of the current subframe.
  • the CSI-RS resource is transmitted, and the trigger signaling reported by the corresponding CSI is sent on the Physical Downlink Control Channel (“PDCCH”) of the current subframe.
  • PDCCH Physical Downlink Control Channel
  • the prior art adopts a method of adding a ceil (log2(N))-bit or a 2-bit field in the UL-related DCI format 0/4 to select an indication from the N activated aperiodic CSI-RS resources to the terminal device. That is used to indicate CSI-RS resources. Since the size of the DCI format 0/4 payload needs to be pre-configured to a fixed value through higher layer signaling, the new DCI domain needs to appear in every UL-related PDCCH. Moreover, the payload size of the DCI format 1A associated with the downlink and the payload size of the DCI format 0 must be the same.
  • the DCI format 1A needs to be padded with additional bits to guarantee the format 0.
  • the payload size is the same. In this way, adding a ceil (log2(N))-bit or 2-bit DCI field will increase the overhead of DCI signaling.
  • the present application provides a method, a base station, and a terminal device for indicating a channel state information reference signal CSI-RS resource, and the base station can send the first signaling to the terminal device, and simultaneously indicate the CSI request message and the target CSI-RS resource, which can be reduced. Signaling overhead.
  • a method for indicating a CSI-RS comprising: determining, by a base station, a target CSI-RS resource, where the target CSI-RS resource is one of N CSI-RS resources, and N is 3 Or the base station sends the first signaling to the terminal device, where the first signaling includes a channel state information CSI request message and target CSI-RS indication information, where the target CSI-RS indication information is used to indicate a target CSI-RS resource, the CSI request message is used to indicate that the terminal device reports a target CSI; the base station sends a target CSI-RS on the target CSI-RS resource;
  • the base station configures the terminal device with no more than five downlink serving cells, and the base station configures the terminal device with more than one downlink serving cell, where the first signaling is 3 bits, and the CSI request message Including four different indication information, the target CSI-RS indication information includes two types of indication information, and the base station sends the first signaling to the terminal device, where the base station is configured under a first qualification condition or a second qualification condition. Sending the first signaling to the terminal device, where the first situation is; or,
  • the base station configures the terminal device with no more than five downlink serving cells, and the base station configures the terminal device with more than one CSI process by using the high layer signaling, where the first signaling is 3 bits.
  • the CSI request message includes four different indication information, the target CSI-RS indication information includes two types of indication information, and the base station sends the first signaling to the terminal device, where the first limitation is included in the first limitation. And the second base station sends the first signaling to the terminal device; or
  • the base station configures the terminal device with no more than five downlink serving cells, and the base station configures two CSI measurement sets for the terminal device, where the first signaling is 3 bits, and the CSI request message includes 4 different indication information, the target CSI-RS indication information includes two types of indication information, and the base station sends the first signaling to the terminal device, where the base station is in a first qualified condition or a second limited condition Transmitting, by the terminal device, the first signaling, where the first situation is; or,
  • the base station configures the terminal device with more than five downlink serving cells, the first signaling is 4 bits, the CSI request message includes 8 different indication information, and the target CSI-RS indication information includes 2 And indicating, by the base station, the first signaling to the terminal device, where the base station sends the first signaling to the terminal device under a first limiting condition; or the first signaling is 3 bits
  • the CSI request message includes four different indication information, the target CSI-RS indication information includes two types of indication information, and the sending, by the base station, the first signaling to the terminal device, including the first qualification condition and the second Determining, the base station sends the first signaling to the terminal device; or
  • the base station configures one downlink serving cell for the terminal device, and the base station configures one CSI process for the terminal device by using the high layer signaling, the first signaling is 3 bits, and the CSI request message includes Two types of indication information, where the target CSI-RS indication information includes four different indication information.
  • the base station sends the first signaling to the terminal device by using the method for indicating the CSI-RS resource, where the CSI request message in the first signaling can indicate that the terminal device reports the target CSI, and the target CSI-RS indication in the first signaling
  • the information can indicate the target CSI-RS resource, reducing the signaling overhead.
  • the first qualified condition is that the N CSI-RS resources belong to two sets, and the target CSI-RS resource is the jth CSI in the i-th set- An RS resource, where i is 1 or 2, and j is 1 or 2; when the target CSI-RS resource is a CSI-RS resource in the first set, the base station sends the first to the terminal device
  • the signaling includes: in the first subframe, the base station sends the first signaling to the terminal device; when the target CSI-RS resource is a CSI-RS resource in the second set, the base station Transmitting the first signaling to the terminal device, including: sending, by the base station, the first signaling to the terminal device in a second subframe, where the first subframe and the second Subframes are different subframes.
  • the second limiting condition is: the base station
  • the terminal device sends a control element CE of the medium access control MAC, where the MAC CE is used to indicate indication information of the k CSI request messages, where the indication information of the CSI request message includes not triggering the terminal device to
  • the base station reports the target CSI or one of the indication information that triggers the k CSI request messages to report the target CSI, where k is a positive integer less than or equal to 3.
  • the first subframe and the second subframe are adjacent subframes.
  • the channel state information CSI request message and the target CSI-RS indication information are independent bits; or the channel state information CSI request message and the target CSI - RS indicates the joint encoding of the information.
  • a second aspect provides a method for indicating a CSI-RS, the method comprising: determining, by a base station, a target CSI-RS resource, wherein the target CSI-RS resource is one of two CSI-RS resources; Transmitting the first signaling to the terminal device, where the first signaling includes a channel state information CSI request message and target CSI-RS indication information, where the target CSI-RS indication information is used to indicate the target CSI-RS resource
  • the CSI request message is used to indicate that the terminal device reports a target CSI; the base station sends a target CSI-RS on the target CSI-RS resource, and the base station configures the terminal device with no more than five downlink services.
  • the base station configures the terminal device with more than one downlink serving cell
  • the first signaling is 3 bits
  • the CSI request message includes four different indication information
  • the target CSI-RS indication information Included in the two types of indication information
  • the base station configures the terminal device with no more than five downlink serving cells
  • the base station configures the terminal device with more than one CSI process by using a higher layer
  • the CS The I request message includes four different indication information, where the target CSI-RS indication information includes two types of indication information; or the base station configures the terminal equipment with no more than five downlink serving cells, and the base station gives
  • the terminal device is configured with two CSI measurement sets
  • the first signaling is 3 bits
  • the CSI request message includes four different indication information
  • the target CSI-RS indication information includes two types of indication information
  • the base station configures the terminal device with more than five downlink serving cells
  • the first signaling is 4 bits
  • the CSI request message includes 8 different indication information
  • the base station sends the first signaling to the terminal device by using the method for indicating the CSI-RS resource, where the CSI request message in the first signaling can indicate that the terminal device reports the target CSI, and the target CSI-RS indication in the first signaling
  • the information can indicate the target CSI-RS resource, reducing the signaling overhead.
  • the first limiting condition is that the two CSI-RS resources belong to two sets, and the target CSI-RS resource is the first CSI in the i-th set.
  • An RS resource where i is 1 or 2; when the target CSI-RS resource is a CSI-RS resource in the first set, the base station sends the first signaling to the terminal device, including: Transmitting, by the base station, the first signaling to the terminal device in a first subframe, and when the target CSI-RS resource is a CSI-RS resource in the second set, the base station is to the terminal device Transmitting the first signaling, the base station sending the first signaling to the terminal device in a second subframe, where the first subframe and the second subframe are different Subframe.
  • the second limiting condition is: the base station sends a control element CE of a media access control MAC to the terminal device, where the MAC CE is used to indicate k
  • the indication information of the CSI request message where the indication information of the CSI request message includes one of the indication information that does not trigger the terminal device to report the target CSI or trigger the k CSI request messages to the base station, and report the target CSI, k is a positive integer less than or equal to 3.
  • the first subframe and the second subframe are adjacent subframes.
  • the channel state information CSI request message and the target CSI-RS indication information are all independently coded;
  • the channel state information CSI request message and the target CSI-RS indication information are jointly encoded.
  • a third aspect provides a method for indicating a CSI-RS resource, where the method includes: the terminal device receives configuration information of N CSI-RS resources from a base station, where N is 3 or 4; and the terminal device receives the base station to send The first signaling, where the first signaling includes a channel state information CSI request message and a target CSI-RS indication information, where the target CSI-RS indication information is used to indicate a target CSI-RS resource, the CSI request The message is used to indicate that the terminal device reports the target CSI, where the target CSI-RS resource is one of the N CSI-RS resources, and the terminal device receives the location sent by the base station on the target CSI-RS resource.
  • the target CSI-RS is used to indicate that the terminal device reports the target CSI, where the target CSI-RS resource is one of the N CSI-RS resources, and the terminal device receives the location sent by the base station on the target CSI-RS resource.
  • the terminal device has no more than five downlink serving cells, and the terminal device has more than one downlink serving cell, and the first The signaling is 3 bits, the CSI request field includes 4 different indication information, the target CSI-RS indication information is 2 kinds of indication information, and the terminal device receives the first signaling sent by the base station, where The terminal device receives the first signaling sent by the base station, or the terminal device has no more than five downlink serving cells, and the terminal device has more CSI processes.
  • the first signaling is 3 bits
  • the CSI request field includes four different indication information
  • the target CSI-RS indication information is two kinds of indication information
  • the terminal device receives the information sent by the base station.
  • the first signaling includes, by using the first limiting condition or the second limiting condition, the terminal device receives the first signaling sent by the base station; or the terminal device has no more than five downlink serving cells, and the The CSI measurement set of the terminal device is two, the first signaling is 3 bits, the CSI request field includes four different indication information, and the target CSI-RS indication information is two kinds of indication information, the terminal Receiving, by the base station, the sending The signaling includes, by the first limiting condition or the second limiting condition, the terminal device receiving the first signaling sent by the base station; or the terminal device has more than five downlink serving cells, and when the The signaling is 4 bits, the CSI request message is 8 different indication information, the target CSI-RS indication information is 2 kinds of indication information, and the terminal device receives the first signaling sent by the base station, where The first device receives the first signaling sent by the base station, or the first signaling is 3 bits, where the CSI request field includes four different indication information, and the target CSI-RS
  • the base station sends the first signaling to the terminal device by using the method for indicating the CSI-RS resource, where the CSI request message in the first signaling can indicate that the terminal device reports the target CSI, and the target CSI-RS indication in the first signaling
  • the information can indicate the target CSI-RS resource, reducing the signaling overhead.
  • the first limiting condition is that the N CSI-RS resources belong to two sets, and the target CSI-RS resource is a j-th CSI in the i-th set An RS resource, where i is 1 or 2, and j is 1 or 2; when the target CSI-RS resource is a CSI-RS resource in the first set, the terminal device receives the first sent by the base station
  • the signaling includes: receiving, by the terminal device, the first signaling sent by the base station in a first subframe; and when the target CSI-RS resource is a CSI-RS resource in the second set, the terminal device Receiving the base station And sending, by the terminal device, the first signaling sent by the base station in a second subframe, where the first subframe and the second subframe are different subframes .
  • the second limiting condition is: the terminal device receives a control element CE of a media access control MAC sent by the base station, where the MAC CE is used to indicate k
  • the indication information of the CSI request message, the indication information of the CSI request message includes one of the indication information that does not trigger the terminal device to report the target CSI or trigger the k CSI request messages to the base station.
  • the target CSI, k is a positive integer less than or equal to 3.
  • the first subframe and the second subframe are adjacent subframes.
  • the channel state information CSI request message and the target CSI-RS indication information are all independently coded;
  • the channel state information CSI request message and the target CSI-RS indication information are jointly encoded.
  • a fourth aspect provides a method for indicating a CSI-RS resource, where the method includes: receiving, by a terminal device, first signaling sent by a base station, where the first signaling includes a channel state information CSI request domain and the target The CSI-RS indication information is used to indicate the target CSI-RS resource, where the CSI request field is used to instruct the terminal device to report a target CSI, where the target CSI-RS resource is 2 One of the CSI-RS resources; the terminal device receives the target CSI sent by the base station on the target CSI-RS resource; the terminal device has no more than five downlink serving cells, and the The terminal device has more than one downlink serving cell, the first signaling is 3 bits, the CSI request field includes 4 different indication information, and the target CSI-RS indication information is 2 kinds of indication information; or The terminal device has no more than five downlink serving cells, and the terminal device has more than one CSI process, the first signaling is 3 bits, and the CSI request domain includes four different indication information.
  • the target CSI-RS indication information is two types of indication information. Or, the terminal device has no more than five downlink serving cells, and the CSI measurement set of the terminal device is two, the first signaling is 3 bits, and the CSI request domain includes four different indications.
  • the information that the target CSI-RS indication information is two types of indication information; or that the terminal equipment has more than five downlink serving cells, the first signaling is 4 bits, and the CSI request message is 8 different types.
  • the first signaling includes the terminal device receiving the first signaling by the base station under a second limited condition; or the downlink serving cell of the terminal device is one, and the CSI process of the terminal device is 1
  • the first signaling is mapped to the terminal-specific search space, the first signaling is 3 bits, the CSI request domain is 2 kinds of indication information, and the target CSI-RS indication information is 4 Different instructions.
  • the base station sends the first signaling to the terminal device by using the method for indicating the CSI-RS resource, where the CSI request message in the first signaling can indicate that the terminal device reports the target CSI, and the target CSI-RS indication in the first signaling
  • the information can indicate the target CSI-RS resource, reducing the signaling overhead.
  • the first limiting condition is that the two CSI-RS resources belong to two sets, and the target CSI-RS resource is the first CSI in the i-th set.
  • An RS resource where i is 1 or 2; when the target CSI-RS resource is a CSI-RS resource in the first set, the base station sends the first signaling to the UE, including: The base station sends the first signaling to the UE in a first subframe; when the target CSI-RS resource is a CSI-RS resource in the second set, the terminal device receives the sent by the base station
  • the first signaling includes: the base station sends the first signaling to the terminal device in a second subframe, where the first subframe and the second subframe are different subframes.
  • the second limiting condition is: the UE receives a control element CE of a media access control MAC sent by the base station, where the MAC CE is used to indicate k
  • the indication information of the CSI request message where the indication information of the CSI request message includes one of the indication information that does not trigger the UE to report the target CSI or trigger the k CSI request messages to the base station, and report the target CSI , k is a positive integer less than or equal to 3.
  • the first subframe and the second subframe are adjacent subframes.
  • the channel state information CSI request message and the target CSI-RS indication information are all independently coded; or the channel state information CSI request message and the target CSI-RS The indication information is jointly encoded.
  • a base station including a processing unit and a sending unit, for implementing corresponding functions of the base station in the first aspect.
  • the functions of each unit can be implemented by hardware or by software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a base station including a processor and a transmitter, for implementing corresponding functions of the first base station.
  • the functions of each device can be implemented in hardware or in hardware.
  • the base station may also include a memory and a receiver.
  • a base station including a processing unit and a sending unit, for implementing corresponding functions of the base station in the second aspect.
  • the functions of each unit can be implemented by hardware or by software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a base station including a processor and a transmitter, for implementing corresponding functions of the base station in the second aspect.
  • the functions of each device can be implemented in hardware or in software by executing the corresponding software.
  • the base station may also include a memory and a receiver.
  • a ninth aspect provides a terminal device, including a receiving unit and a processing unit, for implementing corresponding functions of the terminal device in the third aspect.
  • the functions of each unit can be implemented by hardware or by software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a tenth aspect provides a terminal device, including a receiver and a processor, for implementing the terminal device of the base station in the foregoing third aspect.
  • the functions of each device can be implemented in hardware or in software by executing the corresponding software.
  • the terminal device may further include a memory and a transmitter.
  • a terminal device including a receiving unit and a processing unit, for implementing corresponding functions of the terminal device in the fourth aspect.
  • the functions of each unit can be implemented by hardware or by software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a twelfth aspect provides a terminal device, including a receiver and a processor, for implementing the terminal device of the base station in the fourth aspect.
  • the functions of each device can be implemented in hardware or in software by executing the corresponding software.
  • the terminal device may further include a memory and a transmitter.
  • a thirteenth aspect a computer readable storage medium for storing program code for indicating a channel state information reference signal CSI-RS resource, the program code for performing the first aspect Method instructions in .
  • a computer readable storage medium for storing program code for indicating a channel state information reference signal CSI-RS resource, the program code for performing the second aspect Method instructions in .
  • a method for indicating a channel state information reference signal CSI-RS resource includes:
  • the base station determines a target CSI-RS resource, where the target CSI-RS resource is one of N CSI-RS resources, and N is a positive integer greater than or equal to 2 and less than or equal to 4;
  • the base station sends the first signaling to the UE, where the first signaling includes a channel state information CSI request message and target CSI-RS indication information, where the target CSI-RS indication information is used to indicate the target a CSI-RS resource, where the CSI request message is used to indicate that the UE reports a target CSI;
  • the base station configures the UE with no more than five downlink serving cells, and the base station configures the UE with more than one downlink serving cell, the first signaling is 3 bits, and the CSI request message includes 4 a different indication information, the channel state information CSI request message and the target CSI-RS indication information are in a mapping relationship, where the mapping relationship is that each indication information in the CSI request message corresponds to m CSI-RS resources, m is a positive integer less than or equal to N; or,
  • the base station configures the UE with no more than five downlink serving cells, and the base station configures the UE with more than one CSI process, the first signaling is 3 bits, and the CSI request message includes 4 a different indication information, the channel state information CSI request message and the target CSI-RS indication information are in a mapping relationship, where the mapping relationship is that each indication information in the CSI request message corresponds to m CSI-RS resources, m is a positive integer less than or equal to N; or,
  • the base station configures the UE with no more than five downlink serving cells, and the base station configures two CSI measurement sets for the UE, where the first signaling is 3 bits, and the CSI request message includes four types.
  • Different mapping information, the channel state information CSI request message and the target CSI-RS indication information are in a mapping relationship, where the mapping relationship is that each indication information in the CSI request message corresponds to m CSI-RS resources, m Is a positive integer less than or equal to N; or,
  • the base station configures the UE with more than five downlink serving cells, the first signaling is 3 bits, the CSI request message includes 8 different indication information, the channel state information CSI request message, and the The target CSI-RS indication information has a mapping relationship, where each indication information in the CSI request message corresponds to m CSI-RS resources, and m is a positive integer less than or equal to N.
  • a method for indicating a channel state information reference signal CSI-RS resource including:
  • a receiving unit configured to receive configuration information of N CSI-RS resources from the base station, where N is a positive integer greater than or equal to 2 and less than or equal to 4;
  • the receiving unit is further configured to receive the first signaling sent by the base station, where the first signaling includes a channel state information CSI request message and target CSI-RS indication information, where the target The CSI-RS indication information is used to indicate the target CSI-RS resource, where the CSI request message is used to indicate that the UE reports a target CSI, and the target CSI-RS resource is one of N CSI-RS resources;
  • the terminal device has no more than five downlink serving cells, and the terminal device has more than one downlink serving cell, the first signaling is 3 bits, and the CSI request message includes four different indication information.
  • the channel state information CSI request message and the target CSI-RS indication information have a mapping relationship, where the mapping relationship is that each indication information in the CSI request message corresponds to m CSI-RS resources, where m is less than or equal to N. Positive integer; or,
  • the terminal device has no more than five downlink serving cells, and the terminal device has more than one CSI process, the first signaling is 3 bits, and the CSI request message includes four different indication information.
  • the channel state information CSI request message and the target CSI-RS indication information are in a mapping relationship, where the mapping information is that each indication information in the CSI request message corresponds to m CSI-RS resources, where m is less than or equal to N. Positive integer; or,
  • the terminal device has no more than five downlink serving cells, and the CSI measurement set of the terminal device is two, the first signaling is 3 bits, and the CSI request message includes four different indication information.
  • the channel state information CSI request message and the target CSI-RS indication information are in a mapping relationship, where the mapping information is that each indication information in the CSI request message corresponds to m CSI-RS resources, where m is less than or equal to N. Positive integer; or,
  • the terminal device has more than five downlink serving cells, the first signaling is 3 bits, and the CSI request message includes eight different indication information, the channel state information CSI request message and the target CSI-
  • the RS indicates that there is a mapping relationship, where each indication information in the CSI request message corresponds to m CSI-RS resources, and m is a positive integer less than or equal to N.
  • a base station comprising:
  • a processing unit configured to determine a target CSI-RS resource, where the target CSI-RS resource is one of N CSI-RS resources, and N is a positive integer greater than or equal to 2 and less than or equal to 4;
  • a sending unit configured to send the first signaling to the UE, where the first signaling includes a channel state information CSI request message and target CSI-RS indication information, where the target CSI-RS indication information is used to indicate a target CSI-RS resource, where the CSI request message is used to indicate that the UE reports a target CSI;
  • the sending unit is further configured to send the target CSI-RS on the target CSI-RS resource;
  • the processing unit is further configured to configure the UE with no more than five downlink serving cells, and configure more than one downlink serving cell for the UE, where the first signaling is 3 bits, and the CSI request message There are four different indication information, and the channel state information CSI request message and the target CSI-RS indication information have a mapping relationship, where the mapping relationship is that each indication information in the CSI request message corresponds to m CSI-RSs.
  • Resource, m is a positive integer less than or equal to N; or,
  • the processing unit is further configured to configure the UE with no more than five downlink serving cells, and configure more than one CSI process for the UE, where the first signaling is 3 bits, and the CSI request message There are four different indication information, and the channel state information CSI request message and the target CSI-RS indication information have a mapping relationship, where the mapping relationship is that each indication information in the CSI request message corresponds to m CSI-RSs.
  • Resource, m is a positive integer less than or equal to N; or,
  • the processing unit is further configured to configure the UE with no more than five downlink serving cells, and configure two CSI measurement sets for the UE, where the first signaling is 3 bits, and the CSI request message includes There are four different indication information, and the channel state information CSI request message and the target CSI-RS indication information are in a mapping relationship, where the mapping relationship is that each indication information in the CSI request message corresponds to m CSI-RS resources.
  • m is a positive integer less than or equal to N; or,
  • the processing unit is further configured to configure the UE with more than five downlink serving cells, where the first signaling is 3 bits, the CSI request message includes eight different indication information, and the channel state information CSI There is a mapping relationship between the request message and the target CSI-RS indication information, where each indication information in the CSI request message corresponds to m CSI-RS resources, and m is a positive integer less than or equal to N.
  • a terminal device where the terminal device includes:
  • a receiving unit configured to receive configuration information of N CSI-RS resources from the base station, where N is a positive integer greater than or equal to 2 and less than or equal to 4;
  • the receiving unit is further configured to receive the first signaling sent by the base station, where the first signaling includes a channel state information CSI request message and target CSI-RS indication information, and the target CSI-RS indication information
  • the CSI request message is used to indicate that the UE reports a target CSI
  • the target CSI-RS resource is one of N CSI-RS resources
  • a processing unit configured to determine the target CSI-RS resource according to the first signaling
  • a receiving unit configured to receive, by using the target CSI-RS resource, the target CSI-RS sent by the base station;
  • the terminal device has no more than five downlink serving cells, and the terminal device has more than one downlink serving cell, the first signaling is 3 bits, and the CSI request message includes four different indication information.
  • the channel state information CSI request message and the target CSI-RS indication information have a mapping relationship, where the mapping relationship is that each indication information in the CSI request message corresponds to m CSI-RS resources, where m is less than or equal to N. Positive integer; or,
  • the terminal device has no more than five downlink serving cells, and the terminal device has more than one CSI process, the first signaling is 3 bits, and the CSI request message includes four different indication information.
  • the channel state information CSI request message and the target CSI-RS indication information are in a mapping relationship, where the mapping information is that each indication information in the CSI request message corresponds to m CSI-RS resources, where m is less than or equal to N. Positive integer; or,
  • the terminal device has no more than five downlink serving cells, and the CSI measurement set of the terminal device is two, the first signaling is 3 bits, and the CSI request message includes four different indication information.
  • the channel state information CSI request message and the target CSI-RS indication information are in a mapping relationship, where the mapping information is that each indication information in the CSI request message corresponds to m CSI-RS resources, where m is less than or equal to N. Positive integer; or,
  • the terminal device has more than five downlink serving cells, the first signaling is 3 bits, and the CSI request message includes eight different indication information, the channel state information CSI request message and the target CSI-
  • the RS indicates that there is a mapping relationship, where each indication information in the CSI request message corresponds to m CSI-RS resources, and m is a positive integer less than or equal to N.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for indicating a channel state information reference signal according to an embodiment of the present invention.
  • FIG. 3 is a schematic block diagram of a base station in accordance with one embodiment of the present invention.
  • FIG. 4 is a schematic block diagram of a base station according to another embodiment of the present invention.
  • FIG. 5 is a schematic block diagram of a base station according to another embodiment of the present invention.
  • FIG. 6 is a schematic block diagram of a base station according to another embodiment of the present invention.
  • FIG. 7 is a schematic block diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 8 is a schematic block diagram of a terminal device according to another embodiment of the present invention.
  • FIG. 9 is a schematic block diagram of a terminal device according to another embodiment of the present invention.
  • FIG. 10 is a schematic block diagram of a terminal device according to another embodiment of the present invention.
  • the base station may be a base station (Base Transceiver Station, abbreviated as "BTS”) in GSM or CDMA, or may be a base station (NodeB, referred to as "NB”) in WCDMA, or may be in LTE.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB e-NodeB
  • the evolved base station is not limited in the present invention.
  • a terminal equipment may be referred to as a terminal, or may be a user equipment (UE), a mobile station (MS), and a mobile terminal ( Mobile terminal), a notebook computer, etc.
  • the terminal device can communicate with one or more core networks via a radio access network (RAN), for example, the terminal device can be a mobile phone (or "cellular" phone Or a computer or the like having a mobile terminal, for example, the terminal device may also be a portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile device that exchanges voice and/or data with the wireless access network.
  • RAN radio access network
  • the high layer signaling is signaling sent by a protocol layer above the physical layer, such as Radio Resource Control (RRC) signaling.
  • RRC Radio Resource Control
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
  • the basic network architecture of the LTE communication system may include, for example, a terminal device, a base station, a downlink serving cell 1 and a downlink serving cell N.
  • the terminal device is located in the coverage of one or more downlink serving cells (which can be understood as a carrier) provided by the base station, and the downlink serving cell serving the terminal device may be one or more.
  • the terminal device may perform carrier aggregation (Carrier Aggregation ("CA") or dual connectivity (Dual Connectivity ("DC”) or coordinated multipoint transmission (Coordinated Multiple Point Transmission). , referred to as "CoMP" for a while, where the carrier in the CA is provided by at least one base station.
  • CA Carrier Aggregation
  • DC Dual Connectivity
  • CoMP Coordinated Multiple Point Transmission
  • the CSI-RS subframe configuration I CSI-RS is removed from the aperiodic CSI-RS resource configuration, and the CSI-RS does not transmit according to the configured period, but the base station dynamically indicates the CSI-RS through the UL-related DCI.
  • the terminal device does not know the time-frequency location of the CSI-RS resource before receiving the CSI request field, and the base station needs to perform the instruction of the corresponding CSI-RS resource configuration while triggering the CSI report.
  • the CSI process represents a set of parameters such as channel quality and inter-cell interference, and any parameter that can indicate the channel state may be the content of the CSI process, which is not limited herein.
  • the base station When the base station needs to send downlink data to the terminal device, the base station sends the aperiodic CSI-RS resource to the terminal device, and the terminal device performs CSI measurement according to the received aperiodic CSI-RS resource, and feeds the measured CSI to the base station.
  • the base station performs resource scheduling according to the received CSI.
  • the terminal device when the terminal device feeds back the measured CSI to the base station, the terminal device triggers the sending of the CSI according to the CSI request field in the first signaling received from the base station.
  • the CSI request domain is 1 bit.
  • the status information is shown in Table 2-A.
  • Table 2-A when the indication information of the CSI request field is "0", the CSI request field is used to indicate that the terminal device does not send CSI to the base station; when the indication information of the CSI request field is "1", The CSI request field is used to instruct the terminal device to send CSI to the base station based on the CSI process set.
  • the base station configures the terminal device with no more than five downlink serving cells, and the base station configures the terminal device with more than one downlink serving cell
  • the first signaling is mapped to the terminal device specific search space or when the base station configures the terminal device More than 5 downlink serving cells, and the base station configures more than one CSI process for the terminal device by using the high layer signaling, when the first signaling is mapped to the terminal device specific search space; or when the base station configures the terminal device no more than 5 downlink serving cells, and the base station configures two CSI measurement sets for the terminal device.
  • the CSI request field is 2 bits, and when the base station configures the UE as the transmission mode 1 At 9 o'clock, the status information is shown in Table 2-B. For example, when the indication information of the CSI request field is “00”, the CSI request field is used to indicate that the terminal device does not send CSI to the base station; when the indication information of the CSI request field is “01”, the CSI request field is used to indicate The terminal device sends CSI to the base station based on the CSI process corpus; when the indication information of the CSI request field is "10", the CSI request field is used to indicate that the terminal device sends CSI to the base station based on the CSI first process subset; when the CSI requests the domain status When it is "11", the CSI request field is used to instruct the terminal device to send CSI to the base station based on the CSI second process subset.
  • the base station configures the terminal device with no more than five downlink serving cells, and the base station configures the terminal device with more than one downlink serving cell
  • the first signaling is mapped to the terminal device specific search space or when the base station allocates the terminal device No more than 5 downlink serving cells are set, and the base station configures more than one CSI process for the terminal device by using the high layer signaling, when the first signaling is mapped to the terminal device specific search space; or when the base station configures the terminal device More than 5 downlink serving cells, and the base station configures two CSI measurement sets for the terminal device.
  • the CSI request field is 2 bits, and when the base station configures the UE as the transmission mode.
  • the status information is shown in Table 2-C.
  • the indication information of the CSI request field is “00”, the CSI request field is used to indicate that the terminal device does not send CSI to the base station; when the indication information of the CSI request field is “01”, the CSI request field is used to indicate The terminal device sends CSI to the base station based on the CSI process corpus; when the indication information of the CSI request field is "10”, the CSI request field is used to indicate that the terminal device sends CSI to the base station based on the CSI first process subset; when the CSI requests the domain status When it is "11", the CSI request field is used to instruct the terminal device to send CSI to the base station based on the CSI second process subset.
  • the CSI request field is 3 bits, and the status information is as shown in Table 2-D. For example, when the CSI request field status is “000”, the CSI request field is used to indicate that the terminal device does not send CSI to the base station; when the CSI request domain status is “001”, the CSI request field is used to indicate that the terminal device is based on the CSI.
  • the CSI request field is used to instruct the terminal device to send CSI to the base station based on the CSI first process subset when the CSI request field status is "010"; when the CSI request field status is "011", The CSI request field is used to instruct the terminal device to send CSI to the base station based on the CSI second process subset.
  • the N CSI-RS resources are controlled by a Base Access Control (Medium Access Control, "MAC") control element (Control Element, "CE") according to an activation/deactivation mechanism from K CSIs.
  • MAC Medium Access Control
  • CE Control Element
  • the value of N can be configured through high-level signaling.
  • the maximum value of N is determined according to the capabilities of the terminal device.
  • Each CSI process can correspond to a maximum of four activated CSI-RS resources.
  • FIG. 2 is a schematic interaction diagram of a method 200 for indicating a channel state reference signal CSI-RS resource according to an embodiment of the present invention. As shown in FIG. 2, the method 200 includes:
  • the base station sends N CSI-RS resource configuration information to the terminal device.
  • the base station determines a target CSI-RS resource, where the target CSI-RS resource is one of N CSI-RS resources, and N is 3 or 4;
  • the base station sends the first signaling to the terminal device, where the first signaling includes a channel state information CSI request message and a target CSI-RS indication information, where the target CSI-RS indication information is used to indicate the target CSI-RS resource.
  • the CSI request message is used to indicate that the terminal device reports the target CSI; correspondingly, the terminal device receives the first signaling sent by the base station;
  • the base station sends a target CSI-RS on the target CSI-RS resource.
  • the terminal device receives the target CSI-RS on the target CSI-RS resource.
  • the base station determines one target CSI-RS resource indication from the N active CSI-RS resources to the terminal device.
  • the base station sends the first signaling to the terminal device, where the first signaling includes a channel state information CSI request message and a target CSI-RS indication information, where the target CSI-RS indication information is used to indicate the target CSI-RS resource, the CSI
  • the request message is used to indicate that the terminal device reports the target CSI, and the target CSI is the CSI sent on the target CSI-RS resource.
  • the base station sends the target CSI-RS on the target CSI-RS resource, and the terminal device starts the measurement of the CSI after receiving the target CSI-RS.
  • the method provided by the embodiment of the present invention can enable the CSI request message in the first signaling sent by the base station to indicate that the terminal device reports the target, and the target CSI-RS indication information in the first signaling can indicate the target CSI-RS. Resources, reducing signaling overhead.
  • the channel state information CSI request message and the target CSI-RS indication information in the first signaling may be independent coding or joint coding.
  • the indication information field of the CSI request message in the first signaling state is the same as the indication information field of the CSI request field in the prior art, and other fields in the first signaling except the indication information field of the CSI request message Then, the indication information field of the target CSI-RS indication information; in the joint coding, the indication information field of the CSI request message in the first signaling state is different from the indication information field of the CSI request domain in the prior art, in the CSI request
  • any combination of the forms may be used to indicate that the terminal device reports the CSI and the target CSI-RS resource.
  • the base station configures one downlink serving cell to the terminal device, and the base station configures one CSI process for the terminal device by using the high layer signaling, and the first signaling is mapped to the terminal device specific search space
  • the CSI request in the prior art.
  • the domain is 1 bit and includes two types of indication information.
  • the status information is shown in Table 2-A.
  • the first signaling is a fixed 3 bits
  • the CSI request message includes two types of indication information
  • the target CSI-RS indication information includes four different indication information.
  • the 3-bit first signaling may indicate that the five target CSI-RS resources and the terminal device report the target CSI-RS combination based on the target CSI process set, and the remaining three
  • the first signaling state is a reserved state and is not used to indicate any kind of information.
  • the CSI request message and the indication information of the target CSI-RS indication information may be jointly coded, or may be independently coded, so that the 3-bit first signaling may indicate the target CSI-RS resource and the terminal.
  • the device reports the target CSI-RS based on the target CSI process set, as shown in FIG. 3.
  • the first signaling state is "000”
  • the first signaling is used to indicate that the terminal device does not send CSI to the base station
  • the first signaling state is "001”
  • the first signal The 1-bit CSI request message in the command is used to instruct the terminal device to send CSI to the base station according to the ensemble of the CSI process, where the ensemble of the CSI process is configured for the serving cell, and the 2-bit target CSI in the first signaling is used.
  • the RS indication information is used to indicate the first CSI-RS resource of the four CSI-RS resources that the base station configures for the terminal device by using the RRC; when the first signaling state is “010”, the first signaling
  • the 1-bit CSI request message is used to instruct the terminal device to send CSI to the base station based on the ensemble of the CSI process, where the ensemble of the CSI process is configured for the serving cell, and the 2-bit target CSI-RS indication in the first signaling
  • the information is used to indicate the second CSI-RS resource of the four CSI-RS resources that the base station configures for the terminal device by using the RRC; when the first signaling state is “011”, the 1-bit CSI in the first signaling
  • the request message is used to indicate that the terminal device sends the CSI to the base station according to the ensemble of the CSI process, where the ensemble of the CSI process is configured for the serving cell, and the 2-bit target CSI-RS indication information in the first signaling is used to indicate The second CSI-RS resource
  • the coding mode shown in Table 3 is only one form of the joint coding mode, and any joint coding form capable of enabling the first signaling to indicate that the target resource and the terminal device transmit the CSI based on the CSI to the base station is within the scope of protection of the present invention.
  • the base station configures one downlink serving cell to the terminal device, and the base station configures one CSI process for the terminal device by using the high layer signaling
  • the first A signaling may also be a fixed 3 bits. To avoid repetition, details are not described herein again.
  • the base station configures the terminal device with no more than five downlink serving cells, and the base station configures the terminal device with more than one downlink serving cell
  • the first signaling is mapped to the terminal device specific search space or when the base station configures the terminal device More than 5 downlink serving cells, and the base station configures more than one CSI process for the terminal device by using the high layer signaling, when the first signaling is mapped to the terminal device specific search space; or when the base station configures the terminal device no more than 5 downlink serving cells, and the base station configures two CSI measurement sets for the terminal device.
  • the CSI request domain in the prior art includes four different indication information. The status information is shown in Table 2-B.
  • the CSI request message status is a fixed 3 bits
  • the target CSI-RS indication information is 1 bit.
  • the 3-bit indication information value cannot indicate the combination of the 13 target CSI-RS resources and the terminal device based on the target CSI process set report target CSI-RS without adding any restrictions. And transmitting, by using the first qualified condition, the first signaling manner to the terminal device, to indicate that the 13 target CSI-RS resources and the terminal device report the combination of the target CSI process set on which the target CSI-RS is based.
  • the base station When the target CSI-RS resource is a CSI-RS resource in the first set, the base station is in the first subframe. Transmitting, by the inbound terminal device, the first signaling;
  • the base station When the target CSI-RS resource is a CSI-RS resource in the second set, the base station sends the first signaling to the terminal device in the second subframe.
  • first subframe and the second subframe are different subframes, and may be adjacent subframes or non-adjacent subframes.
  • the predefined resource grouping mode is that the first set is (0, 1), and the second set is (2, 3).
  • the base station needs to When the target CSI-RS resource is determined in the four CSI-RS resources, the base station sends the first signaling to the terminal device in the Kth subframe, and the target CSI-RS indicated by the target CSI-RS indication information in the first signaling
  • the resource is one of 0 or 1 in the first set;
  • the target CSI-RS resource indicated by the target CSI-RS indication information in the first signaling sent in the K+1th subframe is 2 in the second set Or one of the three;
  • the target CSI-RS resource indicated by the target CSI-RS indication information in the first signaling sent by the base station in the K+2 subframe is one of 0 or 1 in the first set;
  • the target CSI-RS resource indicated by the target CSI-RS indication information in the first signaling sent in the K+3 subframe is one of 2 or 3 in the second set, and
  • the first signaling is sent to the terminal device by using the first limiting condition, and the target CSI-RS resource and the 13 combinations of the target CSI process set on which the terminal device reports the target CSI-RS are reported are reduced to 7, and the remaining one is first.
  • the signaling status is reserved.
  • the CSI request message and the indication information of the target CSI-RS indication information may be jointly encoded in any form, or may be independently coded, so that the 3-bit first signaling may indicate the target CSI-RS resource.
  • the terminal device reports the target CSI process set based on the target CSI-RS, as shown in FIG. 4 .
  • the first signaling state is "000”, the first signaling is used to indicate that the terminal device does not send CSI to the base station; when the first signaling state is "001", the first signal The 2-bit CSI request message in the command is used to instruct the terminal device to send CSI to the base station according to the ensemble of the CSI process, where the ensemble of the CSI process is configured for the serving cell, and the target CSI of the 1-bit in the first signaling - RS indication information is used to indicate the first of the 2 CSI-RS resources in the ith set a CSI-RS resource; when the first signaling state is "010", the 2-bit CSI request message in the first signaling is used to instruct the terminal device to send CSI to the base station based on the first subset of the CSI process corpora,
  • the CSI process trajectory is configured for the serving cell, and the 1-bit target CSI-RS indication information in the first signaling is used to indicate the first CSI in the 2 CSI-RS resources in the ith set.
  • the 2-bit CSI request message in the first signaling is used to indicate that the second subset of the CSI process ensemble based on the terminal device sends CSI to the base station, the CSI The cadence of the process is configured for the serving cell, and the target CSI-RS indication information of the 1 bit in the first signaling is used to indicate the second CSI-RS of the 2 CSI-RS resources in the ith set. Resources.
  • the coding mode shown in Table 4 is only one form of the joint coding mode, and the joint coding of the CSI process ensemble or subset based on which the first signaling can be instructed to indicate that the target resource and the terminal device transmit the CSI to the base station. Forms are within the scope of the invention.
  • the base station may further determine the target CSI-RS resources from the first set and the second set, respectively, in the adjacent subframes, and the base station may further perform the first reporting times according to the number of times of reporting.
  • a target CSI-RS resource is determined within the set and the second set. For example, when the base station needs to determine the target CSI-RS resource from the four CSI-RS resources, the base station first determines the target CSI-RS resource from the first set, and the second time determines the target CSI-RS from the second set. Resources, in turn loop.
  • the understanding of the CSI-RS resource set used by the base station and the terminal device for CSI reporting will be inconsistent.
  • the CSI-RS resource set number on which the current measurement result is based needs to be reported at the same time to confirm that the base station and the terminal device have the same understanding of the currently sent CSI-RS resources. If the understanding of the base station and the terminal device is inconsistent, the base station needs to reactivate the CSI-RS to reset the number of times the CSI report is triggered.
  • the base station configures the terminal device with no more than five downlink serving cells, and the base station configures the terminal device with more than one downlink serving cell
  • the first signaling is mapped to the terminal device specific search space or when the base station gives the terminal
  • the device is configured with no more than five downlink serving cells, and the base station configures more than one CSI process for the terminal device by using the high layer signaling, when the first signaling is mapped to the terminal device specific search space; or when the base station configures the terminal device No more than 5 downlink serving cells, and the base station configures two CSI measurement sets for the terminal device.
  • the CSI request domain in the prior art includes eight different indication information, and the status information is as shown in Table 2- C is shown.
  • the first signaling is a fixed 3 bits.
  • the combination of the target CSI-RS resources and the terminal device reporting the target CSI-RS based on the target CSI process set cannot be indicated by using the 3-bit first signaling.
  • the combination of the target CSI-RS resources and the terminal device reporting the target CSI-RS based on the target CSI process set may be indicated on the basis of the first qualification condition in combination with the second qualification condition.
  • the base station sends a control element CE of the media access control MAC to the terminal device, where the MAC CE is used to indicate indication information of the k CSI request messages, where the indication information of the CSI request message includes not triggering the terminal.
  • the device reports, to the base station, one of the target CSI or the indication information that triggers the k CSI request messages, to report the target CSI, where k is a positive integer less than or equal to 3.
  • the corresponding CSI process set When the status of a certain position in the bitmap is "1", the corresponding CSI process set is activated and can be used for CSI reporting.
  • a certain position in the bitmap is "0", the corresponding CSI process set is released. Used for CSI reporting.
  • the base station can cause the terminal device to determine the three CSI processes that are activated through the MAC CE.
  • a base station may indicate a set of k CSI processes through a MAC CE. Any manner that enables a MAC CE to indicate a set of k CSI processes is within the scope of the present application.
  • the target CSI-RS resource and the 29 combinations of the target CSI process set on which the terminal device reports the target CSI-RS are reported can be reduced to 7, and the remaining one signaling state is It is reserved and is not used to indicate any information.
  • the first signaling status information is as shown in Table 4.
  • the base station configures the terminal device with no more than five downlink serving cells, and the base station configures the terminal device with more than one downlink serving cell
  • the first signaling is mapped to the terminal device specific search space or when the base station gives the terminal
  • the device is configured with no more than 5 downlink serving cells, and the base station passes the high Layer signaling to the terminal device to configure more than one CSI process, when the first signaling is mapped to the terminal device specific search space; or when the base station configures the terminal device with no more than 5 downlink serving cells, and the base station gives the terminal device
  • the two CSI measurement sets are configured.
  • the base station may also separately send the first signaling to the terminal device under the second limited condition.
  • the corresponding CSI process set When the status of a certain position in the bitmap is "1", the corresponding CSI process set is activated and can be used for CSI reporting.
  • the corresponding CSI process set When a certain position in the bitmap is "0”, the corresponding CSI process set is released. Used for CSI reporting. It is assumed that the base station determines, by the MAC CE, that the terminal device determines that the two CSI processes that are activated are the CSI process corpus and the first subset.
  • the target CSI-RS resource and the terminal device can be reduced to 7 based on the 10 combinations of the target CSI process target reporting CSI, and the remaining 3 first signaling states are reserved, not used for indication. Any information.
  • the status information is shown in Table 5.
  • the first signaling state is “000”, the first signaling is used to indicate that the terminal device does not send CSI to the base station; when the first signaling state is "010", the first signal
  • the 2-bit CSI request message in the command is used to instruct the terminal device to send CSI to the base station according to the ensemble of the CSI process, where the ensemble of the CSI process is configured for the serving cell, and the target CSI of the 1-bit in the first signaling
  • the RS indication information is used to indicate the first CSI-RS resource of the three CSI-RS resources that the base station configures for the terminal device by using the RRC; when the first signaling state is “100”, 2 of the first signaling
  • the bit CSI request message is used to instruct the terminal device to send CSI to the base station according to the first subset of the CSI process corpus, the ensemble of the CSI process is configured for the serving cell by the high layer signaling, and the 1-bit target in the first signaling
  • the CSI-RS indication information is used to indicate the first CSI-
  • the 2-bit CSI request message in the first signaling is used to indicate that the terminal device is based on the first subset of the CSI process corpus
  • the base station sends CSI, and the complete set of the CSI process is high layer signaling for the serving cell.
  • the target CSI-RS indication information of the first bit of the first signaling is used to indicate the second CSI-RS resource of the three CSI-RS resources that the base station configures for the terminal device by using the RRC.
  • the CSI request domain in the prior art includes two The indication information and status information are shown in Table 2-A.
  • the first signaling is extended to 2 bits
  • the CSI request message includes two types of indication information
  • the target CSI-RS indication information also includes two types of indication information.
  • the base station sends the first signaling to the terminal device by using the first qualified condition, and the combination of the target CSI-RS resource and the terminal device based on the target CSI process set reporting target CSI-RS is reduced from 5 to 3, and the remaining one is first.
  • the signaling status is reserved and is not used to indicate any kind of information.
  • the CSI request message and the indication information of the target CSI-RS indication information may be jointly coded in any form, or may be independently coded, so that the 2-bit first signaling may indicate the target.
  • the CSI-RS resource and the terminal device report the target CSI process set on which the target CSI-RS is based, as shown in FIG. 6.
  • the first signaling state is "00"
  • the first signaling is used to indicate that the terminal device does not send CSI to the base station
  • the first signaling state is "01”
  • the first signal The 1-bit CSI request message in the command is used to indicate that the terminal device sends the CSI process ensemble on which the CSI is based to the base station, where the ensemble of the CSI process is configured for the serving cell, and the first signaling is 1 bit.
  • the target CSI-RS indication information is used to indicate the first CSI-RS resource of the four CSI-RS resources that the base station configures for the terminal device by using the RRC; when the first signaling is “10”, the first signaling is The 1-bit CSI request message is used to instruct the terminal device to send the CSI process ensemble on which the CSI is based, and the ensemble of the CSI process is configured for the serving cell, and the 1-bit target CSI in the first signaling is The RS indication information is used to indicate a second CSI-RS resource of the four CSI-RS resources that the base station configures for the terminal device by using the RRC.
  • the coding mode shown in Table 6 is only one form of the joint coding mode, and any joint coding form capable of enabling the first signaling to indicate that the target resource and the terminal device transmit the CSI based on the CSI to the base station is within the scope of protection of the present invention.
  • the first signaling may also use an extended 2 bits. To avoid repetition, it is not repeated here.
  • the CSI request field in the prior art is 3 bits, and the status information is as shown in Table 2-C.
  • the first signaling is extended 4 bits, and the target CSI-RS indication information is 1 bit.
  • the first signaling of the target CSI-RS resource and the terminal device report the combination of the target CSI based on the target CSI process set, and the remaining one of the first signaling states is reserved, and is not used. Indicate any information.
  • the CSI request message and the indication information of the target CSI-RS indication information may be jointly coded in any form, or may be independently coded, so that the 4-bit first signaling may indicate the target CSI-RS.
  • the resource and the terminal device report the target CSI based on the target CSI process set, as shown in FIG. 7.
  • the first signaling state is "0000", the first signaling is used to indicate that the terminal device does not send CSI to the base station; when the first signaling state is "0001", the first signal
  • the 3-bit CSI request message in the command is used to instruct the terminal device to send CSI to the base station based on the ensemble of the CSI process, where the ensemble of the CSI process is configured for the serving cell, and the target CSI of the 1-bit in the first signaling -RS indication information is used to indicate the first CSI-RS resource of the 2 CSI-RS resources in the ith set; when the first signaling state is "0010", the 3-bit CSI in the first signaling
  • the request message is used to instruct the terminal device to send CSI to the base station according to the first subset of the CSI process ensemble, where the ensemble of the CSI process is configured for the serving cell, and the 1-bit target CSI in the first signaling is
  • the RS indication information is used to indicate the first CSI-RS resource in the 2 CSI-RS resources in the ith
  • the coding mode shown in Table 7 is only one form of the joint coding mode, and any joint coding form capable of causing the first signaling to indicate that the target resource and the terminal device transmit the CSI based on the CSI to the base station is within the scope of protection of the present invention.
  • the base station may also send the first in the first limited condition.
  • the first signaling may also use an extended 4 bits. To avoid repetition, details are not described herein again.
  • the first signaling may also adopt an extended 4 bits, that is, for 2 CSI-RS resources not to be grouped, a 4-bit first signaling indication is used.
  • the first signaling is 4 bits
  • the CSI request message in the first signaling includes 8 different indication information
  • the target CSI-RS indication information includes 2 types of indication information
  • the channel state information CSI request message and the The target CSI-RS indication information is in an independent coding scheme
  • the first signaling state information is as shown in Table 7; in the channel state information CSI request message and the target CSI-RS indication information joint coding scheme, the first signaling
  • the status information is shown in Table 7. To avoid repetition, it will not be described here.
  • the CSI request message in the first signaling sent by the base station can be used to indicate that the terminal device reports the target CSI, and the target CSI in the first signaling is
  • the RS indication information can indicate the target CSI-RS resource, reducing the signaling overhead.
  • the embodiments of the present invention also provide the following two solutions.
  • the base station configures the UE with no more than five downlink serving cells, and the base station configures more than one downlink serving cell for the UE
  • the first signaling is 3 bits, and the CSI request message is sent. Includes 4 different instructions. Take Table 8 as an example.
  • each CSI request message corresponds to one CSI-RS resource in N.
  • N is the number of N CSI-RSs activated by the MAC CE, which may be 2, 3 or 4.
  • the first signaling is 3 Bit
  • the CSI request message includes 8 different indication information. Take Table 9 as an example. At this time, each CSI request message corresponds to one CSI-RS resource in N.
  • the indication channel state information reference signal CSI-RS is described in detail above in connection with FIGS. 1 and 2.
  • a base station and a terminal device according to an embodiment of the present invention will be described in detail below with reference to FIGS. 3 and 10.
  • FIG. 3 is a schematic block diagram of a base station 300 according to an embodiment of the present invention. As shown in FIG. 3, the base station 300 includes:
  • the sending unit 320 is configured to send configuration information of the N CSI-RS resources to the terminal device.
  • the processing unit 310 is configured to determine a target CSI-RS resource, where the target CSI-RS resource is one of the N CSI-RS resources, and N is 3 or 4;
  • the sending unit 320 is configured to send the first signaling to the terminal device, where the first signaling includes a channel state information CSI request message and target CSI-RS indication information, and the target CSI-RS indication information For indicating the target CSI-RS resource determined by the processing unit 310, the CSI request message is used to instruct the terminal device to report the target CSI;
  • the sending unit 320 is further configured to send a target CSI-RS on the target CSI-RS resource;
  • the processing unit 310 is further configured to configure the terminal device with no more than five downlink serving cells, and the processing unit 310 is further configured to configure the terminal device with more than one downlink serving cell, where the first The signaling is 3 bits, the CSI request message includes 4 different indication information, the target CSI-RS indication information includes 2 types of indication information, and the sending unit 320 sends the first signaling to the terminal device, where Transmitting the first signaling to the terminal device under a first qualification condition or a second qualification condition; or
  • the processing unit 310 is further configured to configure the terminal device with no more than five downlink serving cells, and the processing unit 310 is further configured to configure, by using the high layer signaling, the terminal device to configure more than one CSI process.
  • the first signaling is 3 bits
  • the CSI request message includes four different indication information
  • the target CSI-RS indication information includes two types of indication information
  • the sending unit 320 sends the first information to the terminal device.
  • the signaling includes transmitting the first signaling to the terminal device under a first qualification condition or a second qualification condition; or
  • the processing unit 310 is further configured to configure the terminal device with no more than five downlink serving cells, and the processing unit 310 is further configured to configure, by the terminal device, two CSI measurement sets, where the first The command is 3 bits, the CSI request message includes 4 different indication information, the target CSI-RS indication information includes 2 types of indication information, and the sending unit 320 sends the first signaling to the terminal device, where Transmitting the first signaling to the terminal device under a defined condition or a second defined condition; or
  • the processing unit 310 is further configured to configure, by the terminal device, more than five downlink serving cells, where the first signaling is 4 bits, and the CSI request message includes eight different indication information, the target CSI
  • the RS indication information includes two types of indication information, and the sending, by the sending unit 320, the first signaling to the terminal device, to send the first signaling to the terminal device under a first limiting condition; or the first The signaling is 3 bits, the CSI request message includes 4 different indication information, the target CSI-RS indication information includes 2 types of indication information, and the sending unit 320 sends the first signaling to the terminal device, where Transmitting the first signaling to the terminal device under a first qualification condition and a second qualification condition; or
  • the processing unit 310 is further configured to configure, by the terminal device, one downlink serving cell, and the processing unit 310 is further configured to configure, by using the high layer signaling, the CSI process to the terminal device, where the first The command is 3 bits, and the CSI request message includes two types of indication information, and the target CSI-RS indication information includes four different indication information.
  • the base station sends the first signaling to the terminal device, where the CSI request message in the first signaling can indicate that the terminal device reports the target, and the target CSI-RS indication information in the first signaling can Indicates the target CSI-RS resource, which reduces signaling overhead.
  • the first qualification condition is:
  • the N CSI-RS resources belong to two sets, and the target CSI-RS resource is the jth CSI-RS resource in the i-th set, where i is 1 or 2, and j is 1 or 2;
  • the sending unit 320 sends the first signaling to the terminal device, including: in the first subframe, to the terminal device Sending the first signaling;
  • the sending unit 320 sends the first signaling to the terminal device, including: in the second subframe, to the terminal device Transmitting the first signaling, where the first subframe and the second subframe are different subframes.
  • the sending unit 320 is further configured to send, to the terminal device, a control element CE of a media access control MAC according to the second qualification condition, where the MAC CE is used to indicate The indication information of the k CSI request messages, where the indication information of the CSI request message includes one of the indication information that does not trigger the terminal device to report the target CSI or trigger the k CSI request messages to the base station.
  • the target CSI, k is a positive integer less than or equal to 3.
  • the first subframe and the second subframe are adjacent subframes.
  • the channel state information CSI request message and the target CSI-RS indication information are independent bits;
  • the channel state information CSI request message and the target CSI-RS indication information are jointly encoded.
  • base station 400 can include a processor 410 and a transmitter 420. It should be understood that base station 400 can also include a memory 430. The memory 430 can be used to store code executed by the processor 410. Of course, the base station 400 may also include other devices such as a receiver, which is not limited in this embodiment of the present invention.
  • the various components in base station 400 are coupled together by a bus system, which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • a bus system which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • the base station 300 shown in FIG. 3 or the base station 400 shown in FIG. 4 can implement the various processes implemented in the foregoing embodiments of FIG. 1 to FIG. 2, and to avoid repetition, details are not described herein again.
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • the memory in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate SDRAM
  • DDR SDRAM Double Data Rate SDRAM
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Connection Dynamic Random Access Memory
  • DR RAM direct memory bus random access memory
  • FIG. 5 is a schematic block diagram of a base station 500 in accordance with an embodiment of the present invention. As shown in FIG. 5, the base station 500 includes:
  • the sending unit 520 is configured to send configuration information of two CSI-RS resources to the terminal device;
  • the processing unit 510 is configured to determine a target CSI-RS resource, where the target CSI-RS resource is one of the two CSI-RS resources;
  • the sending unit 520 is configured to send the first signaling to the terminal device, where the first signaling includes a channel state information CSI request message and target CSI-RS indication information, and the target CSI-RS indication information For indicating the target CSI-RS resource determined by the processing unit 510, the CSI request message is used to instruct the terminal device to report a target CSI;
  • the sending unit 520 is further configured to send a target CSI-RS on the target CSI-RS resource;
  • the processing unit 510 is further configured to configure the terminal device with no more than five downlink serving cells, and the processing unit 510 is further configured to configure the terminal device with more than one downlink serving cell, where the first The signaling is 3 bits, the CSI request message includes 4 different indication information, and the target CSI-RS indication information includes 2 types of indication information; or
  • the processing unit 510 is further configured to configure the terminal device with no more than five downlink serving cells, and the processing unit 510 is further configured to configure, by using the high layer signaling, the terminal device to configure more than one CSI process.
  • the first signaling is 3 bits
  • the CSI request message includes 4 different indication information
  • the CSI-RS indication information includes two types of indication information; or
  • the processing unit 510 is further configured to configure the terminal device with no more than five downlink serving cells, and the processing unit 510 is further configured to configure, by the terminal device, two CSI measurement sets, where the first The command is 3 bits, the CSI request message includes 4 different indication information, and the target CSI-RS indication information includes 2 types of indication information; or
  • the processing unit 510 is further configured to configure, by the terminal device, more than five downlink serving cells, where the first signaling is 4 bits, and the CSI request message includes eight different indication information, the target CSI
  • the RS indication information includes two types of indication information; or the first signaling is 3 bits, the CSI request message includes four different indication information, and the target CSI-RS indication information includes two types of indication information
  • the sending, by the sending unit 520, the first signaling to the terminal device includes sending the first signaling to the terminal device under a second limiting condition; or
  • the processing unit 510 is further configured to configure, by the terminal device, one downlink serving cell, and The processing unit 510 is further configured to configure, by using the high layer signaling, the CSI process to the terminal device, where the first signaling is 3 bits, and the CSI request message includes two types of indication information, the target CSI-RS The indication information includes 4 different indication information.
  • the base station sends the first signaling to the terminal device, where the CSI request message in the first signaling can indicate that the terminal device reports the target, and the target CSI-RS indication information in the first signaling can Indicates the target CSI-RS resource, which reduces signaling overhead.
  • the first qualification condition is:
  • the two CSI-RS resources belong to two sets, and the target CSI-RS resource is a CSI-RS resource in the i-th set, where i is 1 or 2;
  • the sending unit 520 sends the first signaling to the terminal device, including: in the first subframe, to the terminal device Sending the first signaling;
  • the sending unit 520 sends the first signaling to the terminal device, including: in the second subframe, to the terminal device Transmitting the first signaling, where the first subframe and the second subframe are different subframes.
  • the base station further includes:
  • the sending unit 520 is further configured to send a control element CE of the media access control MAC to the terminal device according to the second limiting condition, where the MAC CE is used to indicate indication information of the k CSI request messages,
  • the indication information of the CSI request message includes one of the indication information that does not trigger the terminal device to report the target CSI or trigger the k CSI request messages to the base station, and report the target CSI, where k is less than or equal to A positive integer of 3.
  • the first subframe and the second subframe are adjacent subframes.
  • the channel state information CSI request message and the target CSI-RS indication information are independent bits;
  • the channel state information CSI request message and the target CSI-RS indication information are jointly encoded.
  • base station 600 can include a processor 610 and a transmitter 620. It should be understood that the base station 600 can also include a memory 630 and a receiver 640. The memory 630 can be used to store code executed by the processor 610.
  • the various components in base station 600 are coupled together by a bus system that includes, in addition to the data bus, a power bus, a control bus, and a status signal bus.
  • the base station 500 shown in FIG. 5 or the base station 600 shown in FIG. 6 can implement the various processes implemented in the foregoing embodiments of FIG. 1 to FIG. 2. To avoid repetition, details are not described herein again.
  • FIG. 7 is a schematic block diagram of a terminal device 700 according to an embodiment of the present invention. As shown in FIG. 7, the terminal device 700 includes:
  • the receiving unit 710 is configured to receive configuration information of N CSI-RS resources sent by the base station, where N is 3 or 4;
  • the receiving unit 710 is further configured to receive the first signaling sent by the base station, where the first signaling includes a channel state information CSI request message and target CSI-RS indication information, where the target CSI-RS indication The information is used to indicate a target CSI-RS resource, where the CSI request message is used to indicate that the terminal device reports a target CSI, where the target CSI-RS resource is one of N CSI-RS resources;
  • the processing unit 720 is configured to determine the target CSI-RS resource according to the first signaling
  • the receiving unit 710 is further configured to receive, by using the target CSI-RS resource, the target CSI-RS sent by the base station;
  • the terminal device has no more than five downlink serving cells, and the terminal device has more than one downlink serving cell, the first signaling is 3 bits, and the CSI request message includes four different indication information.
  • the target CSI-RS indication information is two types of indication information, and the receiving, by the receiving unit 710, the first signaling sent by the base station, includes receiving, by using the first limiting condition or the second limiting condition, the first sending by the base station. Signaling; or,
  • the terminal device has no more than five downlink serving cells, and the terminal device has more than one CSI process, the first signaling is 3 bits, and the CSI request message includes four different indication information.
  • the target CSI-RS indication information is two types of indication information, and the receiving, by the receiving unit 710, the first signaling sent by the base station, by using the first qualified condition or the second limited condition, to receive the first Order; or,
  • the terminal device has no more than five downlink serving cells, and the CSI measurement set of the terminal device is two, the first signaling is 3 bits, and the CSI request message includes four different indication information.
  • the target CSI-RS indication information is two types of indication information, and the receiving, by the receiving unit 710, the first signaling sent by the base station, by using the first qualified condition or the second limited condition, to receive the first Order; or,
  • the terminal device has more than five downlink serving cells, the first signaling is 4 bits, the CSI request message is 8 different indication information, and the target CSI-RS indication information is 2 types. And the receiving, by the receiving unit 710, the first signaling sent by the base station, by using the first limiting condition, receiving the first signaling sent by the base station; or the first signaling is 3 bits, the CSI The request message includes four different indication information, the target CSI-RS indication information includes two types of indication information, and the receiving, by the receiving unit 710, the first signaling sent by the base station is included in the first qualification condition and the second qualification condition. Receiving, by the base station, the first signaling sent by the base station; or
  • the terminal device has one downlink serving cell, the terminal device has one CSI process, the first signaling is 3 bits, and the CSI request message is two kinds of indication information, and the target CSI-RS The indication information is 4 different indication information.
  • the terminal device receives the first signaling sent by the base station, and the CSI request message in the first signaling can instruct the terminal device to report the target CSI, and the target CSI-RS in the first signaling.
  • the indication information can indicate the target CSI-RS resource, which reduces the signaling overhead.
  • the first qualification condition is:
  • the N CSI-RS resources belong to two sets, and the target CSI-RS resource is the jth CSI-RS resource in the i-th set, where i is 1 or 2, and j is 1 or 2;
  • the receiving unit 710 receives the first signaling sent by the base station, and includes: receiving, in the first subframe, the sending by the base station First signaling;
  • the receiving unit 710 receives the first signaling sent by the base station, and includes: receiving, in the second subframe, the sending by the base station First signaling, where the first subframe and the second subframe are different subframes.
  • the receiving unit 710 is further configured to receive a control element CE of a media access control MAC sent by the base station, where the MAC CE is used to indicate an indication of k CSI request messages. And the information indicating that the CSI request message does not trigger the terminal device to report the target CSI or trigger the k CSI request message to the base station to report the target CSI, where k is smaller than Or a positive integer equal to 3.
  • the first subframe and the second subframe are adjacent subframes.
  • the channel state information CSI request message and the target CSI-RS indication information are independent bits;
  • the channel state information CSI request message and the target CSI-RS indication information are jointly encoded.
  • the receiving unit 710 may be implemented by a receiver, and the processing unit 720 may be implemented by a processor.
  • the terminal device 800 may include a receiver 810 and Processor 820. It should be understood that the terminal device 800 can also include a memory 830 and a transmitter 840. The memory 830 can be used to store code executed by the processor 820.
  • the various components in the terminal device 800 are coupled together by a bus system, wherein the bus system includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • the bus system includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • the terminal device 700 shown in FIG. 7 or the terminal device 800 shown in FIG. 8 can implement the various processes implemented in the foregoing embodiments of FIG. 1 to FIG. 2, and to avoid repetition, details are not described herein again.
  • FIG. 9 is a schematic block diagram of a terminal device 900 according to an embodiment of the present invention. As shown in FIG. 9, the terminal device 900 includes:
  • the receiving unit 910 is configured to receive configuration information of two CSI-RS resources sent by the base station;
  • the receiving unit 910 is further configured to receive the first signaling sent by the base station, where the first signaling includes a channel state information CSI request message and target CSI-RS indication information, where the target CSI-RS indication information is used. And indicating a target CSI-RS resource, where the CSI request message is used to indicate that the terminal device reports a target CSI, where the target CSI-RS resource is one of N CSI-RS resources;
  • the processing unit 920 is configured to determine a target CSI-RS resource according to the first signaling
  • the receiving unit 910 is further configured to receive, by using the target CSI-RS resource, the target CSI-RS sent by the base station.
  • the terminal device has no more than five downlink serving cells, and the terminal device has more than one downlink serving cell, the first signaling is 3 bits, and the CSI request message includes four different indication information.
  • the target CSI-RS indication information is two types of indication information, and the receiving, by the receiving unit 910, the first signaling sent by the base station, includes receiving, by using the first limiting condition or the second limiting condition, the first sending by the base station. Signaling; or,
  • the terminal device has no more than five downlink serving cells, and the terminal device has more than one CSI process, the first signaling is 3 bits, and the CSI request message includes four different indication information.
  • the target CSI-RS indication information is two types of indication information, and the receiving, by the receiving unit 910, the first signaling sent by the base station, by using the first limiting condition or the second limiting condition, receiving the first signaling sent by the base station Order; or,
  • the terminal device has no more than five downlink serving cells, and the CSI measurement set of the terminal device is two, the first signaling is 3 bits, and the CSI request message includes four different indication information.
  • the target CSI-RS indication information is two types of indication information, and the receiving, by the receiving unit 910, the first signaling sent by the base station includes receiving, in a first qualified condition or a second limited condition. Decoding the first signaling sent by the base station; or
  • the terminal device has more than five downlink serving cells, the first signaling is 4 bits, the CSI request message is 8 different indication information, and the target CSI-RS indication information is 2 kinds of indication information; Or the first signaling is 3 bits, the CSI request message includes four different indication information, the target CSI-RS indication information includes two types of indication information, and the receiving unit 910 receives the first
  • the signaling includes receiving the first signaling sent by the base station under a first qualification condition or a second qualification condition; or
  • the terminal device has one downlink serving cell, and the terminal device has one CSI process, and the first signaling is mapped to the terminal device-specific search space, and the first signaling is 3 bits.
  • the CSI request message is two types of indication information, and the target CSI-RS indication information is four different indication information.
  • the first qualification condition is:
  • the two CSI-RS resources belong to two sets, and the target CSI-RS resource is a CSI-RS resource in the i-th set, where i is 1 or 2;
  • the receiving module receives the first signaling sent by the base station, and includes: receiving, by using the base station, the first a signalling
  • the receiving module receives the first signaling sent by the base station, and includes: receiving, by using the base station, the second A signaling, wherein the first subframe and the second subframe are different subframes.
  • the receiving unit 910 is further configured to receive a control element CE of a media access control MAC sent by the base station, where the MAC CE is used to indicate indication information of k CSI request messages.
  • the indication information of the CSI request message includes one of the indication information that does not trigger the terminal device to report the target CSI or trigger the k CSI request messages to the base station, and the target CSI is less than or A positive integer equal to 3.
  • the first subframe and the second subframe are adjacent subframes.
  • the channel state information CSI request message and the target CSI-RS indication information are all independently coded;
  • the channel state information CSI request message and the target CSI-RS indication information are jointly encoded.
  • the receiving unit 910 may be implemented by a receiver, and the processing unit 920 may be implemented by a processor.
  • the terminal device 1000 may include a receiver 1010. And processor 1020.
  • the terminal device 800 can also include a memory 1030 and a transmitter 1040.
  • the memory 1030 can be used to store code executed by the processor 1020.
  • the various components in the terminal device 1000 are coupled together by a bus system, wherein the bus system includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • the bus system includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • the terminal device 900 shown in FIG. 9 or the terminal device 1000 shown in FIG. 10 can implement the various processes implemented in the foregoing embodiments of FIG. 1 to FIG. 2 . To avoid repetition, details are not described herein again.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • RAM random access memory
  • ROM read only memory
  • EEPROM electrically programmable ROM
  • EEPly erasable programmable ROM registers
  • hard disk removable disk
  • CD-ROM computer-readable media

Abstract

本申请提供了一种指示信道状态信息参考信号CSI-RS的方法、基站及终端设备。方法包括:基站确定目标CSI-RS资源,目标CSI-RS资源为N个CSI-RS资源中的一个,N为3或4;基站向终端设备发送第一信令,其中,第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,目标CSI-RS指示信息用于指示目标CSI-RS资源,CSI请求消息用于指示终端设备上报目标CSI;基站在目标CSI-RS资源上发送目标CSI-RS。通过本申请的方法,第一信令中的CSI请求消息能够指示终端设备上报目标CSI,第一信令中的目标CSI-RS指示信息能够指示目标CSI-RS资源,减小了信令开销。

Description

指示信道状态信息参考信号CSI-RS资源的方法、基站和终端设备 技术领域
本申请涉及通信领域,并且更具体地,涉及一种指示信道状态信息参考信号CSI-RS资源的方法、基站和终端设备。
背景技术
在第三代合作伙伴计划(3rd Generation Partnership Project,简称:“3GPP”)制定的长期演进(Long Term Evolution,简称:“LTE”)系统中,终端设备(Terminal Equipment,简称:“TE”)通过信道状态信息参考信号(Channel State Information Reference Signal,简称:“CSI-RS”)对信道状态信息(Channel State Information,简称:“CSI”)进行测量和反馈。
在CSI的周期性传输当中,基站通过高层信令为每一个服务小区配置一个或多个周期性信道状态信息进程(Channel State Information process,简称“CSI进程”),其中,每个CSI进程配置K={1,2,…,8}个周期性CSI-RS资源,当前小区内的终端设备可以共享这K个资源,每个周期性CSI-RS资源均对应了一个CSI-RS子帧配置ICSI-RS,ICSI-RS用来指示发送该资源的时域位置。终端设备根据基站配置的ICSI-RS,通过预定义的方式得到CSI-RS发送的周期TCSI-RS和子帧偏移ΔCSI-RS。终端设备通过接受基站发送的上行链路(Uplink,简称:“UL”)相关的下行控制信息(Downlink Control Information,简称:“DCI”)中的CSI请求域字段触发上报CSI进程。
采用周期性传输的方式会产生CSI-RS资源开销过大的问题,为了解决这一问题,LTE引入了非周期性CSI-RS传输。非周期性CSI-RS资源中去掉了CSI-RS子帧配置ICSI-RS。CSI-RS不会按照配置的周期进行发送,而是由基站通过UL相关的DCI动态指示CSI-RS的发送。非周期性CSI-RS资源的发送和相应CSI上报的触发在同一下行子帧中。基站需要在触发CSI进程上报的同时,进行相应非周期性CSI-RS资源配置的指示。具体实现为基站在N个激活的非周期性CSI-RS资源中选择一个指示给终端设备,在当前子帧的物理下行共享信道(Physical Downlink Shared Channel,简称:“PDSCH”)上发送该非周期性CSI-RS资源,并同时在当前子帧的物理下行控制信道(Physical Downlink Control Channel,简称:“PDCCH”)上发送相应CSI上 报的触发信令。
现有技术采用在UL相关的DCI format 0/4中增加ceil(log2(N))-bit或者2-bit域的方式从N个激活的非周期性CSI-RS资源中选择一个指示给终端设备,即用于指示CSI-RS资源。由于DCI format 0/4有效负载的大小需要通过高层信令预先配置为固定的值,新增的DCI域需要在每一个与UL相关的PDCCH中出现。而且,与下行链路相关的DCI format 1A的有效载荷大小和DCI format 0的有效载荷大小必须相同,例如,如果增加DCI format 0的有效载荷,DCI format 1A需要填充额外的比特以保证与format 0的有效载荷大小一致。这样,新增ceil(log2(N))-bit或者2-bit DCI域的方法会增加DCI信令的开销。
发明内容
本申请提供了一种指示信道状态信息参考信号CSI-RS资源的方法、基站和终端设备,基站可以向终端设备发送第一信令,同时指示CSI请求消息和目标CSI-RS资源,能够减小信令开销。
第一方面,提供了一种指示CSI-RS的方法,该方法包括:基站确定目标CSI-RS资源,其中,所述目标CSI-RS资源为N个CSI-RS资源中的一个,N为3或4;所述基站向终端设备发送第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI;所述基站在所述目标CSI-RS资源上发送目标CSI-RS;
所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站给所述终端设备配置多于一个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述基站向所述终端设备发送第一信令包括在第一限定条件或第二限定条件下所述基站向所述终端设备发送所述第一信令,所述第一情况为;或者,
所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站通过高层信令给所述终端设备配置多于1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述基站向所述终端设备发送第一信令包括在第一限定条 件或第二限定条件下所述基站向所述终端设备发送所述第一信令;或者,
所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站给所述终端设备配置两个CSI测量集合,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述基站向所述终端设备发送第一信令包括在第一限定条件或第二限定条件下所述基站向所述终端设备发送所述第一信令,所述第一情况为;或者,
所述基站给所述终端设备配置多于5个下行服务小区,所述第一信令为4比特,所述CSI请求消息包括8种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述基站向所述终端设备发送第一信令包括在第一限定条件下所述基站向所述终端设备发送所述第一信令;或所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述基站向所述终端设备发送第一信令包括在第一限定条件和第二限定条件下所述基站向所述终端设备发送所述第一信令;或者,
所述基站给所述终端设备配置1个下行服务小区,且所述基站通过高层信令给所述终端设备配置1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括2种指示信息,所述目标CSI-RS指示信息包括4种不同的指示信息。
因此,通过该指示CSI-RS资源的方法,基站向终端设备发送第一信令,第一信令中的CSI请求消息能够指示终端设备上报目标CSI,第一信令中的目标CSI-RS指示信息能够指示目标CSI-RS资源,减小了信令开销。
在第一方面的一种可能的实现方式中,第一限定条件为:所述N个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的第j个CSI-RS资源,其中,i为1或2,j为1或2;当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述基站向所述终端设备发送所述第一信令,包括:在第一子帧内所述基站向所述终端设备发送所述第一信令;当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述基站向所述终端设备发送所述第一信令,包括:在第二子帧内所述基站向所述终端设备发送所述第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
在第一方面的一种可能的实现方式中,第二限定条件为:所述基站向所 述终端设备发送媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
在第一方面的一种可能的实现方式中,所述第一子帧和所述第二子帧为相邻的子帧。
在第一方面的一种可能的实现方式中,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息均为独立的比特;或者所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息联合编码。
第二方面,提供了一种指示CSI-RS的方法,该方法包括:基站确定目标CSI-RS资源,其中,所述目标CSI-RS资源为2个CSI-RS资源中的一个;所述基站向终端设备发送第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI;所述基站在所述目标CSI-RS资源上发送目标CSI-RS所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站给所述终端设备配置多于一个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或者,所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站通过高层给所述终端设备配置多于1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或者,所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站给所述终端设备配置两个CSI测量集合,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或者,所述基站给所述终端设备配置多于5个下行服务小区,所述第一信令为4比特,所述CSI请求消息包括8种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述所述基站向所述终端设备发送第一信令包括在第二限定条件下所述基站向所述终端设备发送所述第一信令;或者,所述基站给所述终端设备配置1个下行服务小区,且所述基站通过高层信令给所述终端设 备配置1个CSI进程,所述第一信令为3比特,所述CSI请求域包括2种指示信息,所述目标CSI-RS指示信息包括4种不同的指示信息。
因此,通过该指示CSI-RS资源的方法,基站向终端设备发送第一信令,第一信令中的CSI请求消息能够指示终端设备上报目标CSI,第一信令中的目标CSI-RS指示信息能够指示目标CSI-RS资源,减小了信令开销。
在第二方面一种可能的实现方式中,所述第一限定条件为:所述2个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的第1个CSI-RS资源,其中,i为1或2;当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述基站向所述终端设备发送所述第一信令,包括:在第一子帧内所述基站向所述终端设备发送所述第一信令;当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述基站向所述终端设备发送所述第一信令,包括:在第二子帧内所述基站向所述终端设备发送所述第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
在第二方面一种可能的实现方式中,所述第二限定条件为:所述基站向所述终端设备发送媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
在第二方面一种可能的实现方式中,所述第一子帧和所述第二子帧为相邻的子帧。
在第二方面一种可能的实现方式中,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息均为独立编码;或者,
所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息联合编码。
第三方面,提供了一种CSI-RS资源的指示方法,该方法包括:终端设备从基站接收N个CSI-RS资源的配置信息,N为3或4;所述终端设备接收所述基站发送的第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI,所述目标CSI-RS资源为N个CSI-RS资源中的一个;所述终端设备在所述目标CSI-RS资源上接收所述基站发送的所述目标CSI-RS。所述终端设备的下行服务小区不多于5个,且所述终端设备的下行服务小区多于1个,所述第一 信令为3比特,所述CSI请求域包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述终端设备接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下所述终端设备接收所述基站发送的第一信令;或者,所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI进程多于1个,所述第一信令为3比特,所述CSI请求域包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述终端设备接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下所述终端设备接收所述基站发送的第一信令;或者,所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI测量集合为两个,所述第一信令为3比特,所述CSI请求域包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述终端设备接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下所述终端设备接收所述基站发送的第一信令;或者,所述终端设备的下行服务小区多于5个,且当所述第一信令为4比特,所述CSI请求消息为8种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述终端设备接收所述基站发送的第一信令包括在第一限定条件下所述终端设备接收所述基站发送的第一信令;或所述第一信令为3比特,所述CSI请求域包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述终端设备接收所述基站发送的第一信令包括在第一限定条件和第二限定条件下所述终端设备接收所述基站发送的第一信令;或者,所述终端设备的下行服务小区为1个,所述终端设备的CSI进程为1个,所述第一信令为3比特,所述CSI请求域为2种指示信息,所述目标CSI-RS指示信息为4种不同的指示信息。
因此,通过该指示CSI-RS资源的方法,基站向终端设备发送第一信令,第一信令中的CSI请求消息能够指示终端设备上报目标CSI,第一信令中的目标CSI-RS指示信息能够指示目标CSI-RS资源,减小了信令开销。
在第三方面一种可能的实现方式中,所述第一限定条件为:所述N个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的第j个CSI-RS资源,其中,i为1或2,j为1或2;当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述终端设备接收所述基站发送的第一信令,包括:所述终端设备在第一子帧内接收所述基站发送的第一信令;当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述终端设备接收所述基站发 送的第一信令,包括:所述终端设备在第二子帧内接收所述基站发送的第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
在第三方面一种可能的实现方式中,所述第二限定条件为:所述终端设备接收所述基站发送的媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
在第三方面一种可能的实现方式中,所述第一子帧和所述第二子帧为相邻的子帧。
在第三方面一种可能的实现方式中,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息均为独立编码;或者,
所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息联合编码。
第四方面,提供了一种CSI-RS资源的指示方法,该方法包括:终端设备接收基站发送的第一信令,其中,所述第一信令包括信道状态信息CSI请求域和所述目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求域用于指示所述终端设备上报目标CSI,所述目标CSI-RS资源为2个CSI-RS资源中的一个;所述终端设备在所述目标CSI-RS资源上接收所述基站发送的所述目标CSI;所述终端设备的下行服务小区不多于5个,且所述终端设备的下行服务小区多于1个,所述第一信令为3比特,所述CSI请求域包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息;或者,所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI进程多于1个,所述第一信令为3比特,所述CSI请求域包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息;或者,所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI测量集合为两个,所述第一信令为3比特,所述CSI请求域包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息;或者,所述终端设备的下行服务小区多于5个,所述第一信令为4比特,所述CSI请求消息为8种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息;或所述第一信令为3比特,所述CSI请求域包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述终端设备接收所述基站发送的 第一信令包括所述终端设备接收所述基站在第二限定条件下发送所述第一信令;或者,所述终端设备的下行服务小区为1个,所述终端设备的CSI进程为1个,所述第一信令映射到所述终端设备特定的搜索空间,所述第一信令为3比特,所述CSI请求域为2种指示信息,所述目标CSI-RS指示信息为4种不同的指示信息。
因此,通过该指示CSI-RS资源的方法,基站向终端设备发送第一信令,第一信令中的CSI请求消息能够指示终端设备上报目标CSI,第一信令中的目标CSI-RS指示信息能够指示目标CSI-RS资源,减小了信令开销。
在第四方面一种可能的实现方式中,所述第一限定条件为:所述2个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的第1个CSI-RS资源,其中,i为1或2;当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述基站向所述UE发送所述第一信令,包括:在第一子帧内所述基站向所述UE发送所述第一信令;当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述终端设备接收所述基站发送的第一信令,包括:所述基站在第二子帧内向所述终端设备发送所述第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
在第四方面一种可能的实现方式中,所述第二限定条件为:所述UE接收所述基站发送的媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述UE向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
在第四方面一种可能的实现方式中,所述第一子帧和所述第二子帧为相邻的子帧。
在第四方面一种可能的实现方式中,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息均为独立编码;或者所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息联合编码。
第五方面,提供了一种基站,包括处理单元和发送单元,用于实现第一方面中基站的相应功能。各单元的功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
第六方面,提供了一种基站,包括处理器和发送器,用于实现上述第一中基站的相应功能。各器件的功能可以通过硬件实现,也可以通过硬件执行 相应的软件实现。该基站中还可以包括存储器和接收器。
第七方面,提供了一种基站,包括处理单元和发送单元,用于实现第二方面中基站的相应功能。各单元的功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
第八方面,提供了一种基站,包括处理器和发送器,用于实现上述第二方面中基站的相应功能。各器件的功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。该基站中还可以包括存储器和接收器。
第九方面,提供了一种终端设备,包括接收单元和处理单元,用于实现第三方面中终端设备的相应功能。各单元的功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
第十方面,提供了一种终端设备,包括接收器和处理器,用于实现上述第三方面中基站的终端设备。各器件的功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。该终端设备中还可以包括存储器和发送器。
第十一方面,提供了一种终端设备,包括接收单元和处理单元,用于实现第四方面中终端设备的相应功能。各单元的功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
第十二方面,提供了一种终端设备,包括接收器和处理器,用于实现上述第四方面中基站的终端设备。各器件的功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。该终端设备中还可以包括存储器和发送器。
第十三方面,提供一种计算机可读存储介质,所述计算机可读存储介质用于存储指示信道状态信息参考信号CSI-RS资源的方法的程序代码,所述程序代码用于执行第一方面中的方法指令。
第十四方面,提供一种计算机可读存储介质,所述计算机可读存储介质用于存储指示信道状态信息参考信号CSI-RS资源的方法的程序代码,所述程序代码用于执行第二方面中的方法指令。
第十五方面,提供一种一种指示信道状态信息参考信号CSI-RS资源的方法,包括:
基站确定目标CSI-RS资源,其中,所述目标CSI-RS资源为N个CSI-RS资源中的一个,N为大于等于2且小于等于4的正整数;
所述基站向所述UE发送第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求消息用于指示所述UE上报目标CSI;
所述基站在所述目标CSI-RS资源上发送所述目标CSI-RS;
所述基站给所述UE配置不多于5个下行服务小区,且所述基站给所述UE配置多于一个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
所述基站给所述UE配置不多于5个下行服务小区,且所述基站给所述UE配置多于1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
所述基站给所述UE配置不多于5个下行服务小区,且所述基站给所述UE配置两个CSI测量集合,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
所述基站给所述UE配置多于5个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括8种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数。
第十六方面,提供了一种指示信道状态信息参考信号CSI-RS资源的方法,包括:
接收单元,用于从基站接收N个CSI-RS资源的配置信息,N为大于等于2且小于等于4的正整数;
所述接收单元,还用于接收所述基站发送的第一信令,其中所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标 CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求消息用于指示所述UE上报目标CSI,所述目标CSI-RS资源为N个CSI-RS资源中的一个;
所述终端设备在所述目标CSI-RS资源上接收所述基站发送的所述目标CSI-RS;
所述终端设备的下行服务小区不多于5个,且所述终端设备的下行服务小区多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI进程多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI测量集合为两个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
所述终端设备的下行服务小区多于5个,所述第一信令为3比特,所述CSI请求消息包括8种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数。
第十七方面,提供了一种基站,所述基站包括:
处理单元,用于确定目标CSI-RS资源,其中,所述目标CSI-RS资源为N个CSI-RS资源中的一个,N为大于等于2且小于等于4的正整数;
发送单元,用于向所述UE发送第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求消息用于指示所述UE上报目标CSI;
所述发送单元,还用于在所述目标CSI-RS资源上发送所述目标CSI-RS;
所述处理单元,还用于给所述UE配置不多于5个下行服务小区,且给所述UE配置多于一个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
所述处理单元,还用于给所述UE配置不多于5个下行服务小区,且给所述UE配置多于1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
所述处理单元,还用于给所述UE配置不多于5个下行服务小区,且给所述UE配置两个CSI测量集合,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
所述处理单元,还用于给所述UE配置多于5个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括8种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数。
第十八方面,提供了一种终端设备,所述终端设备包括:
接收单元,用于从基站接收N个CSI-RS资源的配置信息,N为大于等于2且小于等于4的正整数;
所述接收单元,还用于接收所述基站发送的第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求消息用于指示所述UE上报目标CSI,所述目标CSI-RS资源为N个CSI-RS资源中的一个;
处理单元,用于根据所述第一信令确定所述目标CSI-RS资源;
接收单元,用于在所述目标CSI-RS资源上接收所述基站发送的所述目标CSI-RS;
所述终端设备的下行服务小区不多于5个,且所述终端设备的下行服务小区多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI进程多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI测量集合为两个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
所述终端设备的下行服务小区多于5个,所述第一信令为3比特,所述CSI请求消息包括8种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数。
附图说明
图1为本发明实施例的一个应用场景的示意图。
图2为根据本发明实施例的指示信道状态信息参考信号的方法的示意性流程图。
图3为根据本发明一个实施例的基站的示意性框图。
图4为根据本发明另一个实施例的基站的示意性框图。
图5为根据本发明另一个实施例的基站的示意性框图。
图6为根据本发明另一个实施例的基站的示意性框图。
图7为根据本发明一个实施例的终端设备的示意性框图。
图8为根据本发明另一个实施例的终端设备的示意性框图。
图9为根据本发明另一个实施例的终端设备的示意性框图。
图10为根据本发明另一个实施例的终端设备的示意性框图。
具体实施方式
下面将结合附图,对本发明实施例中的技术方案进行描述。
在本发明实施例中,基站可以是GSM或CDMA中的基站(Base Transceiver Station,简称为“BTS”),也可以是WCDMA中的基站(NodeB,简称为“NB”),还可以是LTE中的演进型基站(Evolutional Node B,简称为“eNB或e-NodeB”),本发明并不限定。
还应理解,在本发明实施例中,终端设备(terminal equipment)可称之为终端(terminal),也可以是用户设备(user equipment,UE)、移动台(mobile station,MS),移动终端(mobile terminal),笔记本电脑等,该终端设备可以经无线接入网(radio access network,RAN)与一个或多个核心网进行通信,例如,终端设备可以是移动电话(或称为“蜂窝”电话)或具有移动终端的计算机等,例如,终端设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,它们与无线接入网交换语音和/或数据。
应理解,本发明各实施例中,高层信令为处于物理层之上的协议层发出的信令,例如无线资源控制(Radio Resource Control,RRC)信令。
图1是本发明实施例的一种应用场景的示意图。如图1所示,LTE通信系统的基本网络架构例如可以包括终端设备、基站、下行服务小区1和下行服务小区N。终端设备位于基站提供的一个或多个下行服务小区(可以理解为载波)的覆盖范围内,为终端设备服务的下行服务小区可以为一个或多个。当为终端设备的下行服务小区有多个时,终端设备可以按照载波聚合(Carrier Aggregation,简称“CA”)或双连接(Dual Connectivity,简称“DC”)或协作多点传输(Coordinated Multiple Point Transmission,简称“CoMP”)等方式工作,其中CA中的载波由至少一个基站提供。
在LTE Release 14中引入的非周期性CSI-RS传输的机制中,对于处于传输模式(Transmission Mode,简称:“TM”)10的终端设备,基站可以通过高层信令为每一个服务小区配置一个或者多个CSI进程,基站通过RRC信令为每个CSI进程配置K={1,2,…,8}个非周期性CSI-RS资源,当前小区内的终端设备可以共享这K个非周期性资源。其中,非周期性CSI-RS资源配置中去掉了CSI-RS子帧配置ICSI-RS,CSI-RS不会按照配置的周期进行发 送,而是由基站通过UL相关的DCI动态指示CSI-RS的发送,终端设备在接收到CSI请求域之前并不知道CSI-RS资源的时频位置,基站需要在触发CSI上报的同时,进行相应CSI-RS资源配置的指示。
应理解,CSI进程表示信道质量、小区间干扰等参数的集合,凡是能够表示信道状态的参数都可以是CSI进程的内容,本发明在此不作限定。
当基站需要向终端设备发送下行数据时,基站向终端设备发送非周期性CSI-RS资源,终端设备根据接收到的非周期性CSI-RS资源进行CSI测量,并将测量的CSI反馈给基站,基站根据接收到的CSI进行资源调度。
应理解,终端设备将测量的CSI反馈给基站时,终端设备是根据从基站接收的第一信令中的CSI请求域触发发送CSI。
具体地,当基站给终端设备配置1个下行服务小区,且基站通过高层信令给终端设备配置1个CSI进程,第一信令映射到终端设备特定的搜索空间时,CSI请求域为1比特,状态信息如表2-A所示。例如,在表2-A中,当CSI请求域的指示信息为“0”时,该CSI请求域用于指示终端设备不向基站发送CSI;当CSI请求域的指示信息为“1”时,该CSI请求域用于指示终端设备基于CSI进程集合向基站发送CSI。
当基站给终端设备配置不多于5个下行服务小区,且基站给终端设备配置多于一个下行服务小区,该第一信令映射到终端设备特定的搜索空间时或者当基站给终端设备配置不多于5个下行服务小区,且基站通过高层信令给终端设备配置多于1个CSI进程,该第一信令映射到终端设备特定的搜索空间时;或者当基站给终端设备配置不多于5个下行服务小区,且基站给终端设备配置两个CSI测量集合,该第一信令映射到终端设备特定的搜索空间时,CSI请求域为2比特,当基站给UE配置为传输模式1-9时,状态信息如表2-B所示。例如,当CSI请求域的指示信息为“00”时,该CSI请求域用于指示终端设备不向基站发送CSI;当CSI请求域的指示信息为“01”时,该CSI请求域用于指示终端设备基于CSI进程全集向基站发送CSI;当CSI请求域的指示信息为“10”时,该CSI请求域用于指示终端设备基于CSI第一进程子集向基站发送CSI;当CSI请求域状态为“11”时,该CSI请求域用于指示终端设备基于CSI第二进程子集向基站发送CSI。当基站给终端设备配置不多于5个下行服务小区,且基站给终端设备配置多于一个下行服务小区,该第一信令映射到终端设备特定的搜索空间时或者当基站给终端设备配 置不多于5个下行服务小区,且基站通过高层信令给终端设备配置多于1个CSI进程,该第一信令映射到终端设备特定的搜索空间时;或者当基站给终端设备配置不多于5个下行服务小区,且基站给终端设备配置两个CSI测量集合,该第一信令映射到终端设备特定的搜索空间时,CSI请求域为2比特,当基站给UE配置为传输模式10时,状态信息如表2-C所示。例如,当CSI请求域的指示信息为“00”时,该CSI请求域用于指示终端设备不向基站发送CSI;当CSI请求域的指示信息为“01”时,该CSI请求域用于指示终端设备基于CSI进程全集向基站发送CSI;当CSI请求域的指示信息为“10”时,该CSI请求域用于指示终端设备基于CSI第一进程子集向基站发送CSI;当CSI请求域状态为“11”时,该CSI请求域用于指示终端设备基于CSI第二进程子集向基站发送CSI。
当基站给终端设备配置多于5个下行服务小区,第一信令映射到终端设备特定的搜索空间时,CSI请求域为3比特,状态信息如表2-D所示。例如,当CSI请求域状态为“000”时,该CSI请求域用于指示终端设备不向基站发送CSI;当CSI请求域状态为“001”时,该CSI请求域用于指示终端设备基于CSI进程全集向基站发送CSI;当CSI请求域状态为“010”时,该CSI请求域用于指示终端设备基于CSI第一进程子集向基站发送CSI;当CSI请求域状态为“011”时,该CSI请求域用于指示终端设备基于CSI第二进程子集向基站发送CSI。
表2-A CSI请求域状态与上报的CSI的映射关系
Figure PCTCN2016104798-appb-000001
表2-B CSI请求域状态与上报的CSI的映射关系
Figure PCTCN2016104798-appb-000002
表2-C CSI请求域状态与上报的CSI的映射关系
Figure PCTCN2016104798-appb-000003
表2-D CSI请求域状态与上报的CSI的映射关系
Figure PCTCN2016104798-appb-000004
优选地,N个CSI-RS资源为基站通过媒体接入控制(Medium Access Control,简称:“MAC”)的控制元素(Control Element,简称:“CE”)根据激活/去激活机制从K个CSI-RS资源中激活的。N的取值可以通过高层信令进行配置,N的最大值根据终端设备的能力确定,在每个CSI进程最多可以对应4个激活的CSI-RS资源。当K≤2时,N=K;当K>2时,N={1,2,…, min(4,K)}。对于非周期性CSI-RS,当K=1或者N时,该步骤将被跳过。图2为本发明实施例的信道状态参考信号CSI-RS资源的指示方法200的示意性交互图。如图2所述,该方法200包括:
S210,基站向终端设备发送N个CSI-RS资源配置信息;
S220,基站确定目标CSI-RS资源,其中,该目标CSI-RS资源为N个CSI-RS资源中的一个,N为3或4;
S230,基站向终端设备发送第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,目标CSI-RS指示信息用于指示目标CSI-RS资源,CSI请求消息用于指示终端设备上报目标CSI;相对应地,终端设备接收基站发送的第一信令;
S240,基站在该目标CSI-RS资源上发送目标CSI-RS,相对应地,终端设备在该目标CSI-RS资源上接收目标CSI-RS。
具体地,基站从N个处于激活状态的CSI-RS资源中确定1个目标CSI-RS资源指示给终端设备。基站向终端设备发送第一信令,该第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,该目标CSI-RS指示信息用于指示该目标CSI-RS资源,所述CSI请求消息用于指示终端设备上报目标CSI,该目标CSI为在该目标CSI-RS资源上发送的CSI。
基站在该目标CSI-RS资源上发送目标CSI-RS,终端设备接收到该目标CSI-RS后启动对CSI的测量。
因此,通过本发明实施例提供的方法,可以使基站发送的第一信令中的CSI请求消息能够指示终端设备上报目标,第一信令中的目标CSI-RS指示信息能够指示目标CSI-RS资源,减小了信令开销。
可选地,第一信令中的信道状态信息CSI请求消息和目标CSI-RS指示信息可以是独立编码也可以是联合编码。在独立编码中,第一信令状态中的CSI请求消息的指示信息字段与现有技术中CSI请求域的指示信息字段相同,第一信令中除了CSI请求消息的指示信息字段以外的其他字段则为目标CSI-RS指示信息的指示信息字段;在联合编码中,第一信令状态中的CSI请求消息的指示信息字段与现有技术中CSI请求域的指示信息字段不相同,在CSI请求消息的指示信息的固定比特数和目标CSI-RS指示信息的指示信息的固定的比特数的前提下,任何形式的组合都可以用于指示终端设备上报CSI和目标CSI-RS资源。
为避免重复,下面将以N=4为例具体说明本申请的方案。
具体地,当基站给终端设备配置1个下行服务小区,且基站通过高层信令给终端设备配置1个CSI进程,第一信令映射到终端设备特定的搜索空间时,现有技术中CSI请求域为1个比特,包括2种指示信息,状态信息如表2-A所示。在本实施例中,第一信令为固定的3比特,CSI请求消息包括2种指示信息,目标CSI-RS指示信息包括4种不同的指示信息。N=4时,在不增加任何限制的情况下,3比特的第一信令可以指示5种目标CSI-RS资源和终端设备基于目标CSI进程集合上报目标CSI-RS的组合,剩余的三个第一信令状态则为保留状态,不用于指示任何一种信息。
在第一信令状态中,可以对CSI请求消息与目标CSI-RS指示信息的指示信息进行联合编码,也可以进行独立编码,使得3比特的第一信令可以指示目标CSI-RS资源和终端设备基于目标CSI进程集合上报目标CSI-RS,如图3所示。
表3 第一信令状态与上报的CSI的映射关系
Figure PCTCN2016104798-appb-000005
如表3所示,当第一信令状态为“000”时,该第一信令用于指示终端设备不向基站发送CSI;当第一信令状态为“001”时,该第一信令中的1比特的CSI请求消息用于指示终端设备基于CSI进程全集向基站发送CSI,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的2比特的目标CSI-RS指示信息用于指示基站通过RRC为终端设备配置的4个CSI-RS资源中的第一CSI-RS资源;当第一信令状态为“010”时,该第一信令中的 1比特的CSI请求消息用于指示终端设备基于CSI进程全集向基站发送CSI,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的2比特的目标CSI-RS指示信息用于指示基站通过RRC为终端设备配置的4个CSI-RS资源中的第二CSI-RS资源;当第一信令状态为“011”时,该第一信令中的1比特的CSI请求消息用于指示终端设备基于CSI进程全集向基站发送CSI,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的2比特的目标CSI-RS指示信息用于指示基站通过RRC为终端设备配置的4个CSI-RS资源中的第二CSI-RS资源。
应理解,表3所示的编码方式只是联合编码方式的其中一种形式,凡是能够使得第一信令能够指示目标资源与终端设备向基站发送CSI所基于的CSI进程全集的联合编码形式都在本发明的保护范围内。
应理解,当基站给终端设备配置1个下行服务小区,且基站通过高层信令给终端设备配置1个CSI进程,第一信令映射到终端设备特定的搜索空间时,N=2时,第一信令也可以是固定的3比特,为避免重复,此处不再赘述。
当基站给终端设备配置不多于5个下行服务小区,且基站给终端设备配置多于一个下行服务小区,该第一信令映射到终端设备特定的搜索空间时或者当基站给终端设备配置不多于5个下行服务小区,且基站通过高层信令给终端设备配置多于1个CSI进程,该第一信令映射到终端设备特定的搜索空间时;或者当基站给终端设备配置不多于5个下行服务小区,且基站给终端设备配置两个CSI测量集合,该第一信令映射到终端设备特定的搜索空间时,现有技术中的CSI请求域为包括4种不同的指示信息,状态信息如表2-B所示。在本申请中,CSI请求消息状态为固定的3比特,则目标CSI-RS指示信息为1比特。当N=4时,在不增加任何限制的情况下,3比特的指示信息值无法指示13种目标CSI-RS资源和终端设备基于目标CSI进程集合上报目标CSI-RS的组合,此时可以以通过第一限定条件向所述终端设备发送所述第一信令的方式来指示13种目标CSI-RS资源和终端设备上报目标CSI-RS所基于的目标CSI进程集合的组合。
在第一限定条件中,N个CSI-RS资源是属于两个集合,目标CSI-RS资源为第i集合中的第j个CSI-RS资源,其中,i为1或2,j为1或2,N=2,3或4;
当该目标CSI-RS资源为第1集合中的CSI-RS资源时,基站在第一子帧 内向终端设备发送第一信令;
当该目标CSI-RS资源为第2集合中的CSI-RS资源时,基站在第二子帧内向终端设备发送第一信令。
应理解,第一子帧和第二子帧为不同的子帧,可以是相邻的子帧,也可以是不相邻的子帧。
当N=4时,假设资源编号分别为0,1,2和3,预定义的资源分组方式为第一集合为(0,1),第二集合为(2,3),当基站需要从4个CSI-RS资源中确定目标CSI-RS资源时,在第K子帧内基站向终端设备发送第一信令,该第一信令内的目标CSI-RS指示信息指示的目标CSI-RS资源为第一集合中的0或1中的一个;在第K+1子帧内发送的第一信令中的目标CSI-RS指示信息指示的目标CSI-RS资源为第二集合中的2或3中一个;在第K+2子帧内基站发送的第一信令中的目标CSI-RS指示信息指示的目标CSI-RS资源为第一集合中的0或1中的一个;在第K+3子帧内发送的第一信令中的目标CSI-RS指示信息指示的目标CSI-RS资源为第二集合中的2或3中一个,依次循环。
通过第一限定条件向终端设备发送第一信令,可以使目标CSI-RS资源和终端设备上报目标CSI-RS所基于的目标CSI进程集合的13种组合减少为7中,剩余的一个第一信令状态则为保留状态。
以N=4时的第i集合为例具体说明。第一信令状态中,可以对CSI请求消息与目标CSI-RS指示信息的指示信息进行任意形式的联合编码,也可以进行独立编码,使得3比特的第一信令可以指示目标CSI-RS资源和终端设备上报目标CSI-RS所基于的目标CSI进程集合,如图4所示。
表4 第一信令状态与上报的CSI的映射关系
Figure PCTCN2016104798-appb-000006
Figure PCTCN2016104798-appb-000007
Figure PCTCN2016104798-appb-000008
如表4所示,当第一信令状态为“000”时,该第一信令用于指示终端设备不向基站发送CSI;当第一信令状态为“001”时,该第一信令中的2比特的CSI请求消息用于指示终端设备基于CSI进程全集向基站发送CSI,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的1比特的目标CSI-RS指示信息用于指示第i集合中的2个CSI-RS资源中的第一 CSI-RS资源;当第一信令状态为“010”时,该第一信令中的2比特的CSI请求消息用于指示终端设备基于CSI进程全集的第一子集向基站发送CSI,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的1比特的目标CSI-RS指示信息用于指示第i集合中的2个CSI-RS资源中的第一CSI-RS资源;当第一信令状态为“110”时,该第一信令中的2比特的CSI请求消息用于指示终端设备基于的CSI进程全集的第二子集向基站发送CSI,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的1比特的目标CSI-RS指示信息用于指示第i集合中的2个CSI-RS资源中的第二CSI-RS资源。
应理解,表4所示的编码方式只是联合编码方式的其中一种形式,凡是能够使得第一信令能够指示目标资源与终端设备向基站发送CSI所基于的CSI进程全集或子集的联合编码形式都在本发明的保护范围内。
可选地,在第一限定条件中,基站除了在相邻的子帧内分别依次从第一集合和第二集合内确定目标CSI-RS资源以外,基站还可以按照不同的上报次数从第一集合和第二集合内确定目标CSI-RS资源。例如,当基站需要从4个CSI-RS资源中确定目标CSI-RS资源时,基站第一次从第一集合里面确定目标CSI-RS资源,第二次从第二集合里面确定目标CSI-RS资源,依次循环。若终端设备丢失了某次第一信令中的目标CSI-RS资源指示信息或解码错误,基站和终端设备对于CSI上报使用的CSI-RS资源集合的理解将会不一致。终端设备上报CSI时需要同时上报当前测量结果所基于的CSI-RS资源集合编号,以确认基站和终端设备对于当前发送的CSI-RS资源的理解一致。若基站和终端设备的理解不一致时,基站需要重新激活CSI-RS以重置CSI上报触发的次数。
应理解,当基站给终端设备配置不多于5个下行服务小区,且基站给终端设备配置多于一个下行服务小区,该第一信令映射到终端设备特定的搜索空间时或者当基站给终端设备配置不多于5个下行服务小区,且基站通过高层信令给终端设备配置多于1个CSI进程,该第一信令映射到终端设备特定的搜索空间时;或者当基站给终端设备配置不多于5个下行服务小区,且基站给终端设备配置两个CSI测量集合,该第一信令映射到终端设备特定的搜索空间时,N=2的情况下,第一信令也可以采用固定的3比特,为避免重复,此处不再赘述。
当基站给终端设备配置多于5个下行服务小区,第一信令映射到终端设备特定的搜索空间时,现有技术中的CSI请求域包含8种不同的指示信息,状态信息如表2-C所示。在本实施例中,第一信令为固定的3比特。在N=4时,在不增加任何限制的情况下,使用3比特的第一信令无法指示29种目标CSI-RS资源和终端设备基于目标CSI进程集合上报目标CSI-RS的组合;同时在第一限定条件下,使用3比特的第一信令也无法指示15种目标CSI-RS资源和终端设备基于目标CSI进程集合上报目标CSI-RS的组合。此时可以在第一限定条件的基础上结合第二限定条件来指示29种目标CSI-RS资源和终端设备基于目标CSI进程集合上报目标CSI-RS的组合。
在第二限定条件中,基站向终端设备发送媒体接入控制MAC的控制元素CE,MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
例如,当基站给终端设备配置多于5个下行服务小区,第一信令映射到终端设备特定的搜索空间时,MAC CE中包含一个7比特的位图,每一位对应着CSI进程全集与6个CSI进程子集中的第n CSI进程子集的一种,n=1,2,…,6。当位图中某一位置状态值为“1”时,对应的CSI进程集合被激活,可以用于CSI上报;当位图中某一位置“0”时,对应的CSI进程集合被释放,不能用于CSI上报。基站可以通过MAC CE使终端设备确定被激活的3个CSI进程。
应理解,基站通过MAC CE指示k个CSI进程集合存在很多种可能的方式,凡是能够使得MAC CE指示k个CSI进程集合的方式都在本申请的保护范围内。
通过第一限定条件和第二限定条件,可以使目标CSI-RS资源和终端设备上报目标CSI-RS所基于的目标CSI进程集合的29种组合减少为7中,剩余的一个第一信令状态则为保留状态,不用于指示任何信息。第一信令状态信息如表4所示。
应理解,当基站给终端设备配置不多于5个下行服务小区,且基站给终端设备配置多于一个下行服务小区,该第一信令映射到终端设备特定的搜索空间时或者当基站给终端设备配置不多于5个下行服务小区,且基站通过高 层信令给终端设备配置多于1个CSI进程,该第一信令映射到终端设备特定的搜索空间时;或者当基站给终端设备配置不多于5个下行服务小区,且基站给终端设备配置两个CSI测量集合,该第一信令映射到终端设备特定的搜索空间时,基站也可以单独在第二限定条件下向终端设备发送第一信令。例如,N=3时,MAC CE中包含一个3比特的位图,每一位对应着CSI进程全集与2个CSI进程子集中的第n CSI进程子集的一种,n=1或2。当位图中某一位置状态值为“1”时,对应的CSI进程集合被激活,可以用于CSI上报;当位图中某一位置“0”时,对应的CSI进程集合被释放,不能用于CSI上报。假设基站通过MAC CE使终端设备确定被激活的2个CSI进程为CSI进程全集和第一子集。通过第二限定条件,可以使目标CSI-RS资源和终端设备基于目标CSI进程集合上报目标CSI的10种组合减少为7中,剩余的3个第一信令状态则为保留状态,不用于指示任何信息。状态信息如表5所示。
表5 第一信令状态与上报的CSI的映射关系
Figure PCTCN2016104798-appb-000009
Figure PCTCN2016104798-appb-000010
Figure PCTCN2016104798-appb-000011
如表5所示,当第一信令状态为“000”时,该第一信令用于指示终端设备不向基站发送CSI;当第一信令状态为“010”时,该第一信令中的2比特的CSI请求消息用于指示终端设备基于CSI进程全集向基站发送CSI,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的1比特的目标CSI-RS指示信息用于指示基站通过RRC为终端设备配置的3个CSI-RS资源中的第一CSI-RS资源;当第一信令状态为“100”时,该第一信令中的2比特的CSI请求消息用于指示终端设备基于CSI进程全集的第一子集向基站发送CSI,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的1比特的目标CSI-RS指示信息用于指示基站通过RRC为终端设备配置的4个CSI-RS资源中的第一CSI-RS资源;当第一信令状态为“011”时,该第一信令中的2比特的CSI请求消息用于指示终端设备基于CSI进程全集向基站发送CSI,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的1比特的目标CSI-RS指示信息用于指示基站通过RRC为终端设备配置的3个CSI-RS资源中的第二CSI-RS资源;当第一信令状态为“100”时,该第一信令中的2比特的CSI请求消息用于指示终端设备基于CSI进程全集的第一子集向基站发送CSI,该CSI进程全集为高层信令为该服务小区 配置的,该第一信令中的1比特的目标CSI-RS指示信息用于指示基站通过RRC为终端设备配置的3个CSI-RS资源中的第二CSI-RS资源。
当基站给终端设备配置多于5个下行服务小区,第一信令映射到终端设备特定的搜索空间时,N=2的情况下,第一信令也可以为固定的或扩展的3比特,为避免重复,此处不再赘述。
当基站给终端设备配置1个下行服务小区,且基站通过高层信令给终端设备配置1个CSI进程,第一信令映射到终端设备特定的搜索空间时,现有技术中CSI请求域包括两种指示信息,状态信息如表2-A所示。在本实施例中,第一信令扩展为2比特,CSI请求消息包括2种指示信息,目标CSI-RS指示信息也包括2种指示信息。N=4时,在不增加任何限制的情况下,2比特的第一信令无法指示5种目标CSI-RS资源和终端设备基于的目标CSI进程集合上报目标CSI-RS的组合。基站通过第一限定条件向终端设备发送第一信令,可以将目标CSI-RS资源和终端设备基于目标CSI进程集合上报目标CSI-RS的组合由5中减为3种,剩余的一个第一信令状态则为保留状态,不用于指示任何一种信息。
应理解,在第一信令状态中,可以对CSI请求消息与目标CSI-RS指示信息的指示信息进行任意形式的联合编码,也可以进行独立编码,使得2比特的第一信令可以指示目标CSI-RS资源和终端设备上报目标CSI-RS所基于的目标CSI进程集合,如图6所示。
表6 第一信令状态与上报的CSI的映射关系
Figure PCTCN2016104798-appb-000012
Figure PCTCN2016104798-appb-000013
如表6所示,当第一信令状态为“00”时,该第一信令用于指示终端设备不向基站发送CSI;当第一信令状态为“01”时,该第一信令中的1比特的CSI请求消息用于指示终端设备向基站发送CSI所基于的CSI进程全集,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的1比特的目标CSI-RS指示信息用于指示基站通过RRC为终端设备配置的4个CSI-RS资源中的第一CSI-RS资源;当第一信令为“10”时,该第一信令中的1比特的CSI请求消息用于指示终端设备向基站发送CSI所基于的CSI进程全集,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的1比特的目标CSI-RS指示信息用于指示基站通过RRC为终端设备配置的4个CSI-RS资源中的第二CSI-RS资源。
应理解,表6所示的编码方式只是联合编码方式的其中一种形式,凡是能够使得第一信令能够指示目标资源与终端设备向基站发送CSI所基于的CSI进程全集的联合编码形式都在本发明的保护范围内。
应理解,当基站给终端设备配置1个下行服务小区,且基站通过高层信令给终端设备配置1个CSI进程,第一信令映射到终端设备特定的搜索空间时,N=2的情况下,第一信令也可以采用扩展的2比特,为避免重复,此处不再重复。
当基站给终端设备配置多于5个下行服务小区,第一信令映射到终端设备特定的搜索空间时,现有技术中的CSI请求域为3比特,状态信息如表2-C所示。在本实施例中,第一信令为扩展的4比特,则目标CSI-RS指示信息为1比特。在N=4时,在不增加任何限制的情况下,使用4比特的第一信令无法指示29种目标CSI-RS资源和终端设备基于目标CSI进程集合上报目标CSI的组合;同时在第一限定条件下,使用4比特的第一信令可以指示15种目标CSI-RS资源和终端设备基于目标CSI进程集合上报目标CSI的组合,剩余的一个第一信令状态则为保留状态,不用于指示任何信息。
在第一信令状态中,可以对CSI请求消息与目标CSI-RS指示信息的指示信息进行任意形式的联合编码,也可以进行独立编码,使得4比特的第一信令可以指示目标CSI-RS资源和终端设备基于目标CSI进程集合上报目标CSI,如图7所示。
表7 第一信令状态与上报的CSI的映射关系
Figure PCTCN2016104798-appb-000014
Figure PCTCN2016104798-appb-000015
Figure PCTCN2016104798-appb-000016
Figure PCTCN2016104798-appb-000017
Figure PCTCN2016104798-appb-000018
如图7所示,当第一信令状态为“0000”时,该第一信令用于指示终端设备不向基站发送CSI;当第一信令状态为“0001”时,该第一信令中的3比特的CSI请求消息用于指示终端设备基于CSI进程全集向基站发送CSI,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的1比特的目标CSI-RS指示信息用于指示第i集合中的2个CSI-RS资源中的第一CSI-RS资源;当第一信令状态为“0010”时,该第一信令中的3比特的CSI请求消息用于指示终端设备基于CSI进程全集中的第一子集向基站发送CSI,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的1比特的目标CSI-RS指示信息用于指示第i集合中的2个CSI-RS资源中的第一CSI-RS资源;当第一信令状态为“1100”时,该第一信令中的3比特的CSI请求消息用于指示终端设备基于CSI进程全集中的第四子集向基站发送CSI,该CSI进程全集为高层信令为该服务小区配置的,该第一信令中的1比特的目标CSI-RS指示信息用于指示第i集合中的2个CSI-RS资源中的第二CSI-RS资源。
应理解,表7所示的编码方式只是联合编码方式的其中一种形式,凡是能够使得第一信令能够指示目标资源与终端设备向基站发送CSI所基于的CSI进程全集的联合编码形式都在本发明的保护范围内。
应理解,当基站给终端设备配置多于5个下行服务小区,第一信令映射到终端设备特定的搜索空间时,N=2的情况下,基站也可以在第一限定条件下发送第一信令,第一信令也可以采用扩展的4比特,为避免重复,此处不再赘述。
应理解,当基站给终端设备配置多于5个下行服务小区,第一信令映射到终端设备特定的搜索空间时,N=2的情况下,基站也可以不在第一限定条件下发送第一信令,第一信令也可以采用扩展的4比特,即对于2个CSI-RS资源不分组,采用4比特的第一信令指示。
具体地,第一信令为4比特,第一信令中的CSI请求消息包括8种不同的指示信息,目标CSI-RS指示信息包括2种指示信息,在信道状态信息CSI请求消息和所述目标CSI-RS指示信息均为独立编码方案中,第一信令状态信息如表7所示;在信道状态信息CSI请求消息和所述目标CSI-RS指示信息联合编码方案中,第一信令状态信息如表7所示,为避免重复,此处不再赘述。
因此,根据本申请提供的指示信道状态信息参考信号CSI-RS的方法,可以使基站发送的第一信令中的CSI请求消息能够指示终端设备上报目标CSI,第一信令中的目标CSI-RS指示信息能够指示目标CSI-RS资源,减小了信令开销。
本发明实施例还提供了以下两种方案。
当所述基站给所述UE配置不多于5个下行服务小区,且所述基站给所述UE配置多于一个下行服务小区时,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息。以表8为例,此时每一种CSI请求消息均对应N中的一个CSI-RS资源。其中,N是指MAC CE激活的N个CSI-RS,可以是2、3或4。
表8 第一信令状态与上报的CSI的映射关系
Figure PCTCN2016104798-appb-000019
Figure PCTCN2016104798-appb-000020
当所述基站给所述UE配置多于5个下行服务小区,所述第一信令为3 比特,所述CSI请求消息包括8种不同的指示信息。以表9为例,此时每一种CSI请求消息均对应N中的一个CSI-RS资源。
表9 第一信令状态与上报的CSI的映射关系
Figure PCTCN2016104798-appb-000021
上文结合图1和图2详细描述了指示信道状态信息参考信号CSI-RS。下面将结合图3和图10,详细描述根据本发明实施例的基站和终端设备。
图3为本发明实施例的基站300的示意性框图。如图3所示,该基站300包括:
发送单元320,用于向终端设备发送N个CSI-RS资源的配置信息;
处理单元310,用于确定目标CSI-RS资源,其中,所述目标CSI-RS资源为所述N个CSI-RS资源中的一个,N为3或4;
所述发送单元320,用于向所述终端设备发送第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所示处理单元310确定的所述目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI;
所述发送单元320,还用于在所述目标CSI-RS资源上发送目标CSI-RS;
所述处理单元310,还用于给所述终端设备配置不多于5个下行服务小区,且所述处理单元310还用于给所述终端设备配置多于一个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述发送单元320向所述终端设备发送第一信令包括在第一限定条件或第二限定条件下向所述终端设备发送所述第一信令;或者,
所述处理单元310,还用于给所述终端设备配置不多于5个下行服务小区,且所述处理单元310还用于通过高层信令给所述终端设备配置多于1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述发送单元320向所述终端设备发送第一信令包括在第一限定条件或第二限定条件下向所述终端设备发送所述第一信令;或者,
所述处理单元310,还用于给所述终端设备配置不多于5个下行服务小区,且所述处理单元310还用于给所述终端设备配置两个CSI测量集合,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述发送单元320向所述终端设备发送第一信令包括在第一限定条件或第二限定条件下向所述终端设备发送所述第一信令;或者,
所述处理单元310,还用于给所述终端设备配置多于5个下行服务小区,所述第一信令为4比特,所述CSI请求消息包括8种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述发送单元320向所述终端设备发送第一信令包括在第一限定条件下向所述终端设备发送所述第一信令;或所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述发送单元320向所述终端设备发送第一信令包括在第一限定条件和第二限定条件下向所述终端设备发送所述第一信令;或者,
所述处理单元310,还用于给所述终端设备配置1个下行服务小区,且所述处理单元310还用于通过高层信令给所述终端设备配置1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括2种指示信息,所述目标CSI-RS指示信息包括4种不同的指示信息。
因此,通过本发明实施例提供的基站,基站向终端设备发送第一信令,第一信令中的CSI请求消息能够指示终端设备上报目标,第一信令中的目标CSI-RS指示信息能够指示目标CSI-RS资源,减小了信令开销。
可选地,第一限定条件为:
所述N个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的第j个CSI-RS资源,其中,i为1或2,j为1或2;
当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述发送单元320向所述终端设备发送所述第一信令,包括:在第一子帧内向所述终端设备发送所述第一信令;
当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述发送单元320向所述终端设备发送所述第一信令,包括:在第二子帧内向所述终端设备发送所述第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
可选地,作为另一个实施例,所述发送单元320还用于按照所述第二限定条件向所述终端设备发送媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
优选地,第一子帧和第二子帧为相邻的子帧。
可选地,信道状态信息CSI请求消息和目标CSI-RS指示信息均为独立的比特;或者,
信道状态信息CSI请求消息和目标CSI-RS指示信息联合编码。
应注意,本发明实施例中,处理单元310可以由处理器实现,发送单元320可以由发送器实现。如图4所示,基站400可以包括处理器410和发送器420。应理解,基站400还可以包括存储器430。其中,存储器430可以用于存储处理器410执行的代码。当然,基站400还可以包括接收器等其他器件,本发明实施例对此不做限定。
基站400中的各个组件通过总线系统耦合在一起,其中总线系统除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。
图3所示的基站300或图4所示的基站400能够实现前述图1至图2的实施例中所实现的各个过程,为避免重复,此处不再赘述。
应注意,本发明上述方法实施例可以应用于处理器中,或者由处理器实现。处理器可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现成可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。
可以理解,本发明实施例中的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)。 应注意,本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
图5为根据本发明实施例的基站500的示意性框图。如图5所示,该基站500包括:
发送单元520,用于向终端设备发送2个CSI-RS资源的配置信息;
处理单元510,用于确定目标CSI-RS资源,其中,所述目标CSI-RS资源为所述2个CSI-RS资源中的一个;
所述发送单元520,用于向所述终端设备发送第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述处理单元510确定的所述目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI;
所述发送单元520,还用于在所述目标CSI-RS资源上发送目标CSI-RS;
所述处理单元510,还用于给所述终端设备配置不多于5个下行服务小区,且所述处理单元510还用于给所述终端设备配置多于一个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或者,
所述处理单元510,还用于给所述终端设备配置不多于5个下行服务小区,且所述处理单元510还用于通过高层信令给所述终端设备配置多于1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述CSI-RS指示信息包括2种指示信息;或者,
所述处理单元510,还用于给所述终端设备配置不多于5个下行服务小区,且所述处理单元510还用于给所述终端设备配置两个CSI测量集合,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或者,
所述处理单元510,还用于给所述终端设备配置多于5个下行服务小区,所述第一信令为4比特,所述CSI请求消息包括8种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述发送单元520向所述终端设备发送第一信令包括在第二限定条件下向所述终端设备发送所述第一信令;或者,
所述处理单元510,还用于给所述终端设备配置1个下行服务小区,且 所述处理单元510还用于通过高层信令给所述终端设备配置1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括2种指示信息,所述目标CSI-RS指示信息包括4种不同的指示信息。
因此,通过本发明实施例提供的基站,基站向终端设备发送第一信令,第一信令中的CSI请求消息能够指示终端设备上报目标,第一信令中的目标CSI-RS指示信息能够指示目标CSI-RS资源,减小了信令开销。
可选地,第一限定条件为:
所述2个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的CSI-RS资源,其中,i为1或2;
当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述发送单元520向所述终端设备发送所述第一信令,包括:在第一子帧内向所述终端设备发送所述第一信令;
当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述发送单元520向所述终端设备发送所述第一信令,包括:在第二子帧内向所述终端设备发送所述第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
可选地,作为另一个实施例,基站还包括:
所述发送单元520,还用于按照所述第二限定条件向所述终端设备发送媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
优选地,第一子帧和第二子帧为相邻的子帧。
可选地,信道状态信息CSI请求消息和目标CSI-RS指示信息均为独立的比特;或者,
信道状态信息CSI请求消息和目标CSI-RS指示信息联合编码。
应注意,本发明实施例中,处理单元510可以由处理器实现,发送单元520可以由发送器实现。如图6所示,基站600可以包括处理器610和发送器620。应理解,基站600还可以包括存储器630和接收器640。其中,存储器630可以用于存储处理器610执行的代码。
基站600中的各个组件通过总线系统耦合在一起,其中总线系统除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。
图5所示的基站500或图6所示的基站600能够实现前述图1至图2的实施例中所实现的各个过程,为避免重复,此处不再赘述。
图7为本发明实施例的终端设备700的示意性框图。如图7所示,该终端设备700包括:
接收单元710,用于接收基站发送的N个CSI-RS资源的配置信息,N为3或4;
所述接收单元710,还用于接收所述基站发送的第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI,所述目标CSI-RS资源为N个CSI-RS资源中的一个;
处理单元720,用于根据所述第一信令确定所述目标CSI-RS资源;
所述接收单元710,还用于在所述目标CSI-RS资源上接收所述基站发送的所述目标CSI-RS;
所述终端设备的下行服务小区不多于5个,且所述终端设备的下行服务小区多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述接收单元710接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下接收所述基站发送的第一信令;或者,
所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI进程多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述接收单元710接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下接收所述基站发送的第一信令;或者,
所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI测量集合为两个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述接收单元710接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下接收所述基站发送的第一信令;或者,
所述终端设备的下行服务小区多于5个,所述第一信令为4比特,所述CSI请求消息为8种不同的指示信息,所述目标CSI-RS指示信息为2种指 示信息,所述接收单元710接收所述基站发送的第一信令包括在第一限定条件下接收所述基站发送的第一信令;或所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述接收单元710接收所述基站发送的第一信令包括在第一限定条件和第二限定条件下接收所述基站发送的第一信令;或者
所述终端设备的下行服务小区为1个,所述终端设备的CSI进程为1个,所述第一信令为3比特,所述CSI请求消息为2种指示信息,所述目标CSI-RS指示信息为4种不同的指示信息。
因此,通过本发明实施例提供的终端设备,终端设备接收基站发送的第一信令,第一信令中的CSI请求消息能够指示终端设备上报目标CSI,第一信令中的目标CSI-RS指示信息能够指示目标CSI-RS资源,减小了信令开销。
可选地,作为一个实施例,第一限定条件为:
所述N个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的第j个CSI-RS资源,其中,i为1或2,j为1或2;
当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述接收单元710接收所述基站发送的第一信令,包括:在第一子帧内接收所述基站发送的第一信令;
当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述接收单元710接收所述基站发送的第一信令,包括:在第二子帧内接收所述基站发送的第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
可选地,作为一个实施例,所述接收单元710,还用于接收所述基站发送的媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
优选地,第一子帧和第二子帧为相邻的子帧。
可选地,作为一个实施例,信道状态信息CSI请求消息和目标CSI-RS指示信息均为独立的比特;或者
信道状态信息CSI请求消息和目标CSI-RS指示信息联合编码。
应注意,本发明实施例中,接收单元710可以由接收器实现,处理单元720可以由处理器实现。如图8所示,终端设备800可以包括接收器810和 处理器820。应理解,终端设备800还可以包括存储器830和发送器840。其中,存储器830可以用于存储处理器820执行的代码。
终端设备800中的各个组件通过总线系统耦合在一起,其中总线系统除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。
图7所示的终端设备700或图8所示的终端设备800能够实现前述图1至图2的实施例中所实现的各个过程,为避免重复,此处不再赘述。
图9为本发明实施例的终端设备900的示意性框图。如图9所示,该终端设备900包括:
接收单元910,用于接收基站发送的2个CSI-RS资源的配置信息;
所述接收单元910,还用于接收基站发送的第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI,所述目标CSI-RS资源为N个CSI-RS资源中的一个;
处理单元920,用于根据所述第一信令确定目标CSI-RS资源;
所述接收单元910,还用于在所述目标CSI-RS资源上接收所述基站发送的所述目标CSI-RS。
所述终端设备的下行服务小区不多于5个,且所述终端设备的下行服务小区多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述接收单元910接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下接收所述基站发送的第一信令;或者,
所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI进程多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述接收单元910接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下接收所述基站发送的第一信令;或者,
所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI测量集合为两个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述接收单元910接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下接收所 述基站发送的第一信令;或者,
所述终端设备的下行服务小区多于5个,所述第一信令为4比特,所述CSI请求消息为8种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息;或所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述接收单元910接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下接收所述基站发送的第一信令;或者,
所述终端设备的下行服务小区为1个,所述终端设备的CSI进程为1个,所述第一信令映射到所述终端设备特定的搜索空间,所述第一信令为3比特,所述CSI请求消息为2种指示信息,所述目标CSI-RS指示信息为4种不同的指示信息。
可选地,作为一个实施例,所述第一限定条件为:
所述2个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的CSI-RS资源,其中,i为1或2;
当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述接收模块接收所述基站发送的第一信令,包括:在第一子帧内接收所述基站发送的第一信令;
当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述接收模块接收所述基站发送的第一信令,包括:在第二子帧内接收所述基站发送的第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
可选地,作为一个实施例,所述接收单元910还用于接收所述基站发送的媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
可选地,作为一个实施例,所述第一子帧和所述第二子帧为相邻的子帧。
可选地,作为一个实施例,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息均为独立编码;或者,
所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息联合编码。
应注意,本发明实施例中,接收单元910可以由接收器实现,处理单元920可以由处理器实现。如图10所示,终端设备1000可以包括接收器1010 和处理器1020。应理解,终端设备800还可以包括存储器1030和发送器1040。其中,存储器1030可以用于存储处理器1020执行的代码。
终端设备1000中的各个组件通过总线系统耦合在一起,其中总线系统除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。
图9所示的终端设备900或图10所示的终端设备1000能够实现前述图1至图2的实施例中所实现的各个过程,为避免重复,此处不再赘述。
应理解,在本发明的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本发明实施例的实施过程构成任何限定。
应理解,本文中涉及的第一、第二、第三、第四以及各种数字编号仅为描述方便进行的区分,并不用来限制本发明实施例的范围。
应理解,在本发明实施例中,“与A相应的B”表示B与A相关联,根据A可以确定B。但还应理解,根据A确定B并不意味着仅仅根据A确定B,还可以根据A和/或其它信息确定B。
另外,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
本领域普通技术人员可以意识到,结合本文中所公开的实施例中描述的各方法步骤和单元,能够以电子硬件、计算机软件或者二者的结合来实现,为了清楚地说明硬件和软件的可互换性,在上述说明中已经按照功能一般性地描述了各实施例的步骤及组成。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。本领域普通技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。
结合本文中所公开的实施例描述的方法或步骤可以用硬件、处理器执行的软件程序,或者二者的结合来实施。软件程序可以置于随机存储器(RAM)、内存、只读存储器(ROM)、电可编程ROM、电可擦除可编程ROM、寄存器、硬盘、可移动磁盘、CD-ROM、或技术领域内所公知的任意其它形式的存储介质中。
尽管通过参考附图并结合优选实施例的方式对本发明进行了详细描述,但本发明并不限于此。在不脱离本发明的精神和实质的前提下,本领域普通技术人员可以对本发明的实施例进行各种等效的修改或替换,而这些修改或替换都应在本发明的涵盖范围内。

Claims (40)

  1. 一种指示信道状态信息参考信号CSI-RS资源的方法,其特征在于,包括:
    基站向终端设备发送N个CSI-RS资源的配置信息,N为3或4;
    所述基站确定目标CSI-RS资源,其中,所述目标CSI-RS资源为所述N个CSI-RS资源中的一个;
    所述基站向所述终端设备发送第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI;
    所述基站在所述目标CSI-RS资源上发送目标CSI-RS;
    所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站给所述终端设备配置多于一个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述基站向所述终端设备发送第一信令包括在第一限定条件或第二限定条件下所述基站向所述终端设备发送所述第一信令,所述第一情况为;或者,
    所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站通过高层信令给所述终端设备配置多于1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述基站向所述终端设备发送第一信令包括在第一限定条件或第二限定条件下所述基站向所述终端设备发送所述第一信令;或者,
    所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站给所述终端设备配置两个CSI测量集合,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述基站向所述终端设备发送第一信令包括在第一限定条件或第二限定条件下所述基站向所述终端设备发送所述第一信令;或者,
    所述基站给所述终端设备配置多于5个下行服务小区,所述第一信令为4比特,所述CSI请求消息包括8种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述基站向所述终端设备发送第一信令包括在第一限定条件下所述基站向所述终端设备发送所述第一信令;或所述第一信令 为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述基站向所述终端设备发送第一信令包括在第一限定条件和第二限定条件下所述基站向所述终端设备发送所述第一信令;或者,
    所述基站给所述终端设备配置1个下行服务小区,且所述基站通过高层信令给所述终端设备配置1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括2种指示信息,所述目标CSI-RS指示信息包括4种不同的指示信息。
  2. 根据权利要求1所述的方法,其特征在于,所述第一限定条件为:
    所述N个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的第j个CSI-RS资源,其中,i为1或2,j为1或2;
    当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述基站向所述终端设备发送所述第一信令,包括:在第一子帧内所述基站向所述终端设备发送所述第一信令;
    当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述基站向所述终端设备发送所述第一信令,包括:在第二子帧内所述基站向所述终端设备发送所述第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
  3. 根据权利要求1或2所述的方法,其特征在于,所述第二限定条件为:
    所述基站向所述终端设备发送媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
  4. 根据权利要求2或3所述的方法,其特征在于,所述第一子帧和所述第二子帧为相邻的子帧。
  5. 根据权利要求1至4中任一项所述的方法,其特征在于,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息均为独立编码;或者,
    所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息联合编码。
  6. 一种指示信道状态信息参考信号CSI-RS资源的方法,其特征在于,包括:
    基站向终端设备发送2个CSI-RS资源的配置信息;
    所述基站确定目标CSI-RS资源,其中,所述目标CSI-RS资源为所述2个CSI-RS资源中的一个;
    所述基站向所述终端设备发送第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI;
    所述基站在所述目标CSI-RS资源上发送目标CSI-RS;
    所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站给所述终端设备配置多于一个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或者,
    所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站通过高层给所述终端设备配置多于1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或者,
    所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站给所述终端设备配置两个CSI测量集合,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或者,
    所述基站给所述终端设备配置多于5个下行服务小区,所述第一信令为4比特,所述CSI请求消息包括8种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述基站向所述终端设备发送第一信令包括在第二限定条件下所述基站向所述终端设备发送所述第一信令;或者,
    所述基站给所述终端设备配置1个下行服务小区,且所述基站通过高层信令给所述终端设备配置1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括2种指示信息,所述目标CSI-RS指示信息包括4种不同的指示信息。
  7. 根据权利要求6所述的方法,其特征在于,所述第一限定条件为:
    所述2个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的第1个CSI-RS资源,其中,i为1或2;
    当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述基站向所述终端设备发送所述第一信令,包括:在第一子帧内所述基站向所述终端设备发送所述第一信令;
    当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述基站向所述终端设备发送所述第一信令,包括:在第二子帧内所述基站向所述终端设备发送所述第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
  8. 根据权利要求6或7所述的方法,其特征在于,所述第二限定条件为:
    所述基站向所述终端设备发送媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
  9. 根据权利要求7或8所述的方法,其特征在于,所述第一子帧和所述第二子帧为相邻的子帧。
  10. 一种指示信道状态信息参考信号CSI-RS资源的方法,其特征在于,包括:
    基站向终端设备发送N个CSI-RS资源的配置信息;
    所述基站确定目标CSI-RS资源,其中,所述目标CSI-RS资源为所述N个CSI-RS资源中的一个,N为大于等于2且小于等于4的正整数;
    所述基站向所述终端设备发送第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI;
    所述基站在所述目标CSI-RS资源上发送所述目标CSI-RS;
    所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站给所述终端设备配置多于一个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
    所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站给所述终端设备配置多于1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
    所述基站给所述终端设备配置不多于5个下行服务小区,且所述基站给所述终端设备配置两个CSI测量集合,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
    所述基站给所述终端设备配置多于5个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括8种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数。
  11. 一种指示信道状态信息参考信号CSI-RS资源的方法,其特征在于,包括:
    终端设备从基站接收N个CSI-RS资源的配置信息,N为3或4;
    所述终端设备接收所述基站发送的第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI,所述目标CSI-RS资源为N个CSI-RS资源中的一个;
    所述终端设备在所述目标CSI-RS资源上接收所述基站发送的所述目标CSI-RS。
    所述终端设备的下行服务小区不多于5个,且所述终端设备的下行服务小区多于1个,所述第一信令为3比特,所述CSI请求域包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述终端设备接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下所述终端设备接收所述基站发送的第一信令;或者,
    所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI进程多于1个,所述第一信令为3比特,所述CSI请求域包括4种不同的指示信 息,所述目标CSI-RS指示信息为2种指示信息,所述终端设备接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下所述终端设备接收所述基站发送的第一信令;或者,
    所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI测量集合为两个,所述第一信令为3比特,所述CSI请求域包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述终端设备接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下所述终端设备接收所述基站发送的第一信令;或者,
    所述终端设备的下行服务小区多于5个,所述第一信令为4比特,所述CSI请求消息为8种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述终端设备接收所述基站发送的第一信令包括在第一限定条件下所述终端设备接收所述基站发送的第一信令;或所述第一信令为3比特,所述CSI请求域包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述终端设备接收所述基站发送的第一信令包括在第一限定条件和第二限定条件下所述终端设备接收所述基站发送的第一信令;或者,
    所述终端设备的下行服务小区为1个,所述终端设备的CSI进程为1个,所述第一信令为3比特,所述CSI请求消息为2种指示信息,所述目标CSI-RS指示信息为4种不同的指示信息。
  12. 根据权利要求11所述的方法,其特征在于,所述第一限定条件为:
    所述N个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的第j个CSI-RS资源,其中,i为1或2,j为1或2;
    当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述终端设备接收所述基站发送的第一信令,包括:所述终端设备在第一子帧内接收所述基站发送的第一信令;
    当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述终端设备接收所述基站发送的第一信令,包括:所述终端设备在第二子帧内接收所述基站发送的第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
  13. 根据权利要求11或12所述的方法,其特征在于,所述第二限定条件为:
    所述终端设备接收所述基站发送的媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请 求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
  14. 根据权利要求12或13所述的方法,其特征在于,所述第一子帧和所述第二子帧为相邻的子帧。
  15. 根据权利要求11至14中任一项所述的方法,其特征在于,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息均为独立编码;或者,
    所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息联合编码。
  16. 一种指示信道状态信息参考信号CSI-RS资源的方法,其特征在于,包括:
    终端设备接收基站发送的第一信令,其中,所述第一信令包括信道状态信息CSI请求域和所述目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI,所述目标CSI-RS资源为2个CSI-RS资源中的一个;
    所述终端设备在所述目标CSI-RS资源上接收所述基站发送的所述目标CSI;
    所述终端设备的下行服务小区不多于5个,且所述终端设备的下行服务小区多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息;或者,
    所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI进程多于1个,所述第一信令为3比特,所述CSI请求域包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息;或者,
    所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI测量集合为两个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息;或者,
    所述终端设备的下行服务小区多于5个,所述第一信令为4比特,所述CSI请求消息为8种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息;或所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述终端设备接收所述基站发送的第一信令包括在第二限定条件下所述终端设备接收所述基站发送的第一信令;或者,
    所述终端设备的下行服务小区为1个,所述终端设备的CSI进程为1个,所述第一信令为3比特,所述CSI请求消息为2种指示信息,所述目标CSI-RS指示信息为4种不同的指示信息。
  17. 根据权利要求16所述的方法,其特征在于,所述第一限定条件为:
    所述2个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的第1个CSI-RS资源,其中,i为1或2;
    当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述终端设备接收所述基站发送的第一信令,包括:所述终端设备在第一子帧内接收所述基站发送的第一信令;
    当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述终端设备接收所述基站发送的第一信令,包括:所述终端设备在第二子帧内接收所述基站发送的第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
  18. 根据权利要求16或17所述的方法,其特征在于,所述第二限定条件为:
    所述终端设备接收所述基站发送的媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
  19. 根据权利要求17或18所述的方法,其特征在于,所述第一子帧和所述第二子帧为相邻的子帧。
  20. 一种指示信道状态信息参考信号CSI-RS资源的方法,其特征在于,包括:
    接收单元,用于从基站接收N个CSI-RS资源的配置信息,N为大于等于2且小于等于4的正整数;
    所述接收单元,还用于接收所述基站发送的第一信令,其中所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI,所述目标CSI-RS资源为N个CSI-RS资源中的一个;
    所述终端设备在所述目标CSI-RS资源上接收所述基站发送的所述目标 CSI-RS;
    所述终端设备的下行服务小区不多于5个,且所述终端设备的下行服务小区多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
    所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI进程多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
    所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI测量集合为两个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
    所述终端设备的下行服务小区多于5个,所述第一信令为3比特,所述CSI请求消息包括8种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数。
  21. 一种基站,其特征在于,所示基站包括:
    发送单元,用于向终端设备发送N个CSI-RS资源的配置信息;
    处理单元,用于确定目标CSI-RS资源,其中,所述目标CSI-RS资源为所述N个CSI-RS资源中的一个,N为3或4;
    所述发送单元,用于向所述终端设备发送第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所示处理单元确定的所述目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI;
    所述发送单元,还用于在所述目标CSI-RS资源上发送目标CSI-RS;
    所述处理单元,还用于给所述终端设备配置不多于5个下行服务小区,且所述处理单元还用于给所述终端设备配置多于一个下行服务小区,所述第 一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述发送单元向所述终端设备发送第一信令包括在第一限定条件或第二限定条件下向所述终端设备发送所述第一信令;或者,
    所述处理单元,还用于给所述终端设备配置不多于5个下行服务小区,且所述处理单元还用于通过高层信令给所述终端设备配置多于1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述发送单元向所述终端设备发送第一信令包括在第一限定条件或第二限定条件下向所述终端设备发送所述第一信令;或者,
    所述处理单元,还用于给所述终端设备配置不多于5个下行服务小区,且所述处理单元还用于给所述终端设备配置两个CSI测量集合,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述发送单元向所述终端设备发送第一信令包括在第一限定条件或第二限定条件下向所述终端设备发送所述第一信令;或者,
    所述处理单元,还用于给所述终端设备配置多于5个下行服务小区,所述第一信令为4比特,所述CSI请求消息包括8种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述发送单元向所述终端设备发送第一信令包括在第一限定条件下向所述终端设备发送所述第一信令;或所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述发送单元向所述终端设备发送第一信令包括在第一限定条件和第二限定条件下向所述终端设备发送所述第一信令;或者,
    所述处理单元,还用于给所述终端设备配置1个下行服务小区,且所述处理单元还用于通过高层信令给所述终端设备配置1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括2种指示信息,所述目标CSI-RS指示信息包括4种不同的指示信息。
  22. 根据权利要求21所述的基站,其特征在于,所述第一限定条件为:
    所述N个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的第j个CSI-RS资源,其中,i为1或2,j为1或2;
    当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述发送单元向所述终端设备发送所述第一信令,包括:在第一子帧内向所述终端设备发送所述第一信令;
    当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述发送单元向所述终端设备发送所述第一信令,包括:在第二子帧内向所述终端设备发送所述第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
  23. 根据权利要求21或22所述的基站,其特征在于,所述发送单元还用于按照所述第二限定条件向所述终端设备发送媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
  24. 根据权利要求22或23所述的基站,其特征在于,所述第一子帧和所述第二子帧为相邻的子帧。
  25. 根据权利要求21至24中任一项所述的基站,其特征在于,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息均为独立编码;或者,
    所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息联合编码。
  26. 一种基站,其特征在于,所述基站包括:
    发送单元,用于向终端设备发送2个CSI-RS资源的配置信息;
    处理单元,用于确定目标CSI-RS资源,其中,所述目标CSI-RS资源为所述2个CSI-RS资源中的一个;
    所述发送单元,用于向所述终端设备发送第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述处理单元确定的所述目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI;
    所述发送单元,还用于在所述目标CSI-RS资源上发送目标CSI-RS;
    所述处理单元,还用于给所述终端设备配置不多于5个下行服务小区,且所述处理单元还用于给所述终端设备配置多于一个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或者,
    所述处理单元,还用于给所述终端设备配置不多于5个下行服务小区, 且所述处理单元还用于通过高层信令给所述终端设备配置多于1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述CSI-RS指示信息包括2种指示信息;或者,
    所述处理单元,还用于给所述终端设备配置不多于5个下行服务小区,且所述处理单元还用于给所述终端设备配置两个CSI测量集合,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或者,
    所述处理单元,还用于给所述终端设备配置多于5个下行服务小区,所述第一信令为4比特,所述CSI请求消息包括8种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息;或所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述发送单元向所述终端设备发送第一信令包括在第二限定条件下向所述终端设备发送所述第一信令;或者,
    所述处理单元,还用于给所述终端设备配置1个下行服务小区,且所述处理单元还用于通过高层信令给所述终端设备配置1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括2种指示信息,所述目标CSI-RS指示信息包括4种不同的指示信息。
  27. 根据权利要求26所述的基站,其特征在于,所述第一限定条件为:
    所述2个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的CSI-RS资源,其中,i为1或2;
    当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述发送单元向所述终端设备发送所述第一信令,包括:在第一子帧内向所述终端设备发送所述第一信令;
    当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述发送单元向所述终端设备发送所述第一信令,包括:在第二子帧内向所述终端设备发送所述第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
  28. 根据权利要求26或27所述的基站,其特征在于:
    所述发送单元,还用于按照所述第二限定条件向所述终端设备发送媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的 一个上报所述目标CSI,k为小于或等于3的正整数。
  29. 根据权利要求27或28所述的基站,其特征在于,所述第一子帧和所述第二子帧为相邻的子帧。
  30. 一种基站,其特征在于,所述基站包括:
    发送单元,用于向终端设备发送N个CSI-RS资源的配置信息;
    处理单元,用于确定目标CSI-RS资源,其中,所述目标CSI-RS资源为所述N个CSI-RS资源中的一个,N为大于等于2且小于等于4的正整数;
    所述发送单元,用于向所述终端设备发送第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI;
    所述发送单元,还用于在所述目标CSI-RS资源上发送所述目标CSI-RS;
    所述处理单元,还用于给所述终端设备配置不多于5个下行服务小区,且给所述终端设备配置多于一个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
    所述处理单元,还用于给所述终端设备配置不多于5个下行服务小区,且给所述终端设备配置多于1个CSI进程,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
    所述处理单元,还用于给所述终端设备配置不多于5个下行服务小区,且给所述终端设备配置两个CSI测量集合,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
    所述处理单元,还用于给所述终端设备配置多于5个下行服务小区,所述第一信令为3比特,所述CSI请求消息包括8种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为 小于等于N的正整数。
  31. 一种终端设备,其特征在于,所述终端设备包括:
    接收单元,用于接收基站发送的N个CSI-RS资源的配置信息,N为3或4;
    所述接收单元,还用于接收所述基站发送的第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI,所述目标CSI-RS资源为N个CSI-RS资源中的一个;
    处理单元,用于根据所述第一信令确定所述目标CSI-RS资源;
    所述接收单元,还用于在所述目标CSI-RS资源上接收所述基站发送的所述目标CSI-RS;
    所述终端设备的下行服务小区不多于5个,且所述终端设备的下行服务小区多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述接收单元接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下接收所述基站发送的第一信令;或者,
    所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI进程多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述接收单元接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下接收所述基站发送的第一信令;或者,
    所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI测量集合为两个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述接收单元接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下接收所述基站发送的第一信令;或者,
    所述终端设备的下行服务小区多于5个,所述第一信令为4比特,所述CSI请求消息为8种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息,所述接收单元接收所述基站发送的第一信令包括在第一限定条件下接收所述基站发送的第一信令;或所述第一信令为3比特,所述CSI请求消 息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述接收单元接收所述基站发送的第一信令包括在第一限定条件和第二限定条件下接收所述基站发送的第一信令;或者
    所述终端设备的下行服务小区为1个,所述终端设备的CSI进程为1个,所述第一信令为3比特,所述CSI请求消息为2种指示信息,所述目标CSI-RS指示信息为4种不同的指示信息。
  32. 根据权利要求31所述的终端设备,其特征在于,所述第一限定条件为:
    所述N个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的第j个CSI-RS资源,其中,i为1或2,j为1或2;
    当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述接收单元接收所述基站发送的第一信令,包括:在第一子帧内接收所述基站发送的第一信令;
    当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述接收单元接收所述基站发送的第一信令,包括:在第二子帧内接收所述基站发送的第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
  33. 根据权利要求31或32所述的终端设备,其特征在于:
    所述接收单元,还用于接收所述基站发送的媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
  34. 根据权利要求32或33所述的终端设备,其特征在于,所述第一子帧和所述第二子帧为相邻的子帧。
  35. 根据权利要求31至34中任一项所述的终端设备,其特征在于,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息均为独立编码;或者,
    所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息联合编码。
  36. 一种终端设备,其特征在于,所述终端设备包括:
    接收单元,用于接收基站发送的2个CSI-RS资源的配置信息;
    所述接收单元,还用于接收基站发送的第一信令,其中,所述第一信令 包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI,所述目标CSI-RS资源为N个CSI-RS资源中的一个;
    处理单元,用于根据所述第一信令确定目标CSI-RS资源;
    所述接收单元,还用于在所述目标CSI-RS资源上接收所述基站发送的所述目标CSI-RS;
    所述终端设备的下行服务小区不多于5个,且所述终端设备的下行服务小区多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息;或者,
    所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI进程多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息;或者,
    所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI测量集合为两个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息;或者,
    所述终端设备的下行服务小区多于5个,所述第一信令为4比特,所述CSI请求消息为8种不同的指示信息,所述目标CSI-RS指示信息为2种指示信息;或所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述目标CSI-RS指示信息包括2种指示信息,所述接收单元接收所述基站发送的第一信令包括在第一限定条件或第二限定条件下接收所述基站发送的第一信令;或者,
    所述终端设备的下行服务小区为1个,所述终端设备的CSI进程为1个,所述第一信令映射到所述终端设备特定的搜索空间,所述第一信令为3比特,所述CSI请求消息为2种指示信息,所述目标CSI-RS指示信息为4种不同的指示信息。
  37. 根据权利要求36所述的终端设备,其特征在于,所述第一限定条件为:
    所述2个CSI-RS资源属于两个集合,所述目标CSI-RS资源为第i集合中的CSI-RS资源,其中,i为1或2;
    当所述目标CSI-RS资源为第1集合中的CSI-RS资源时,所述接收模块接收所述基站发送的第一信令,包括:在第一子帧内接收所述基站发送的第 一信令;
    当所述目标CSI-RS资源为第2集合中的CSI-RS资源时,所述接收模块接收所述基站发送的第一信令,包括:在第二子帧内接收所述基站发送的第一信令,其中,所述第一子帧和所述第二子帧为不同的子帧。
  38. 根据权利要求36或37所述的终端设备,其特征在于:
    所述接收单元还用于接收所述基站发送的媒体接入控制MAC的控制元素CE,其中,所述MAC CE用于指示k个CSI请求消息的指示信息,所述CSI请求消息的指示信息包括不触发所述终端设备向所述基站上报所述目标CSI或触发所述k个CSI请求消息的指示信息中的一个上报所述目标CSI,k为小于或等于3的正整数。
  39. 根据权利要求37或38所述的终端设备,其特征在于,所述第一子帧和所述第二子帧为相邻的子帧。
  40. 一种终端设备,其特征在于,所述终端设备包括:
    接收单元,用于从基站接收N个CSI-RS资源的配置信息,N为大于等于2且小于等于4的正整数;
    所述接收单元,还用于接收所述基站发送的第一信令,其中,所述第一信令包括信道状态信息CSI请求消息和目标CSI-RS指示信息,所述目标CSI-RS指示信息用于指示所述目标CSI-RS资源,所述CSI请求消息用于指示所述终端设备上报目标CSI,所述目标CSI-RS资源为N个CSI-RS资源中的一个;
    处理单元,用于根据所述第一信令确定所述目标CSI-RS资源;
    所述接收单元,还用于在所述目标CSI-RS资源上接收所述基站发送的所述目标CSI-RS;
    所述终端设备的下行服务小区不多于5个,且所述终端设备的下行服务小区多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
    所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI进程多于1个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映 射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
    所述终端设备的下行服务小区不多于5个,且所述终端设备的CSI测量集合为两个,所述第一信令为3比特,所述CSI请求消息包括4种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数;或者,
    所述终端设备的下行服务小区多于5个,所述第一信令为3比特,所述CSI请求消息包括8种不同的指示信息,所述信道状态信息CSI请求消息和所述目标CSI-RS指示信息存在映射关系,所述映射关系为CSI请求消息中的每个指示信息均对应m个CSI-RS资源,m为小于等于N的正整数。
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US20150098347A1 (en) * 2012-05-10 2015-04-09 Zte Corporation Method for instructing csi feedback signaling configuration and base station
CN103516464A (zh) * 2012-06-20 2014-01-15 中兴通讯股份有限公司 信道状态信息报告的反馈方法及装置
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