WO2013004198A1 - 信道信息的反馈方法、终端和基站 - Google Patents

信道信息的反馈方法、终端和基站 Download PDF

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Publication number
WO2013004198A1
WO2013004198A1 PCT/CN2012/078350 CN2012078350W WO2013004198A1 WO 2013004198 A1 WO2013004198 A1 WO 2013004198A1 CN 2012078350 W CN2012078350 W CN 2012078350W WO 2013004198 A1 WO2013004198 A1 WO 2013004198A1
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WO
WIPO (PCT)
Prior art keywords
feedback
base station
access point
channel
adjustment information
Prior art date
Application number
PCT/CN2012/078350
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English (en)
French (fr)
Inventor
夏亮
周永行
任晓涛
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP12807284.0A priority Critical patent/EP2713540A1/en
Publication of WO2013004198A1 publication Critical patent/WO2013004198A1/zh
Priority to US14/147,300 priority patent/US20140119325A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035Resource allocation in a cooperative multipoint environment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027Scheduling of signalling, e.g. occurrence thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/27Control channels or signalling for resource management between access points
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092Error control systems characterised by the topology of the transmission link
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management

Definitions

  • the present application claims priority to Chinese patent application filed on July 7, 2011, the Chinese Patent Office, the application number is 201110189916.2, and the invention name is "channel information feedback method, terminal and base station" The entire contents of which are incorporated herein by reference.
  • the present invention relates to the field of communications technologies, and in particular, to a method for feeding back channel information, a terminal, and a base station.
  • a multipoint transmission technology such as coordinated multipoint transmission and reception (Coordinated)
  • CoMP Multiple Point transmission and reception
  • APs Access Points
  • UEs User Equipments
  • the base station needs to use the channel state information between the terminal and the candidate access point and the set as the input amount or the reference quantity to complete the processes of sending the precoding, multi-user pairing, and the like, and performing the downlink resource scheduling and signal transmission.
  • the feedback of accurate downlink channel state information is of great significance.
  • the channel state information may be divided into channel space state information and channel quality information, and channel space state information is, for example, a precoding matrix indicator (PMI), and the channel quality information is, for example, a channel quality indicator (Channel Quality Indicator, Referred to as CQI).
  • PMI precoding matrix indicator
  • CQI Channel Quality Indicator
  • a method for feeding back channel space state information of a single access point in the prior art for example: the UE selects an optimal one codeword from the defined codebook, and feeds back the PMI of the codeword in the codebook; Reciprocity obtains the channel covariance matrix of the downlink channel.
  • the base station can obtain the channel covariance matrix of the downlink channel by measuring the Sounding Reference Signal (SRS), and calculate the downlink channel shape according to the PMI fed back by the UE. State information.
  • SRS Sounding Reference Signal
  • JP joint processing
  • multiple access points provide data transmission services for UEs on the same time-frequency resource.
  • the quality of the data signal may be enhanced or weakened. Therefore, multiple access points need to be processed in conjunction with the data signals to be transmitted, for example, the data signals to be transmitted are weighted and mapped to different antennas of different access points.
  • the joint processing of the data signals to be sent by the access point not only needs to consider the channel space state information of the single access point, but also needs to consider the channel information between different access points, so that multiple access points reach the data signals of the UE. The best quality.
  • the information about the channel space status of the single access point such as the PMI of the single access point and/or the channel quality indicator (CQI), may be the above prior art feedback; The channel information between the points is currently lacking a corresponding feedback mechanism.
  • Embodiments of the present invention provide a method for feeding back channel information, a terminal, and a base station, which are used to implement feedback of channel adjustment information between a reference access point and a non-reference access point.
  • An embodiment of the present invention provides a method for feeding back channel information, including:
  • the feedback content includes at least: channel adjustment information between the reference access point and the non-reference access point; the resource configured by the base station includes: a dedicated area configured by the base station to feed back the channel adjustment information Or all or part of resources configured by the base station for periodic feedback; or all or part of resources configured by the base station for aperiodic feedback.
  • a further embodiment of the present invention provides a method for feeding back channel information, including:
  • the configured resources include: configured dedicated resources for feeding back the channel adjustment information; or, configured, all or part of resources for periodic feedback; or All or part of the resources that have been configured for acyclic feedback.
  • the embodiment of the invention further provides a terminal, including:
  • a feedback determining module configured to determine that channel information between the access points needs to be fed back
  • a feedback module configured to send, according to the determination result of the feedback determining module, a feedback content to the base station, where the base station configures the resource, where the feedback content at least includes: between the reference access point and the non-reference access point Channel adjustment information; the resource configured by the base station includes: a dedicated resource configured by the base station to feed back the channel adjustment information; or all or part of resources configured by the base station for periodic feedback; or All or part of resources configured by the base station for aperiodic feedback.
  • the embodiment of the invention further provides a base station, including:
  • a feedback instruction sending module configured to send multiple access point feedback configuration signaling to the terminal
  • a feedback content receiving module configured to receive, on the configured resource, the multi-connection in the sending module according to the feedback instruction
  • the feedback content sent by the inbound feedback configuration signaling, the feedback content at least includes: channel adjustment information between the reference access point and the non-reference access point; the configured resources include: configured, used for a dedicated resource that feeds back the channel adjustment information; or, configured, all or part of the resources for periodic feedback; or configured, all or part of resources for aperiodic feedback.
  • the terminal and the base station when determining that the inter-cell channel information needs to be fed back, the terminal may feed back the channel adjustment information between the reference access point and the non-reference access point to the base station, thereby Provides a solution for feedback of channel information between access points.
  • Embodiment 1 is a flowchart of a method for feeding back channel information according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of a method for feeding back channel information according to Embodiment 2 of the present invention
  • FIG. 3 is a schematic structural diagram of a coordinated multi-point transceiver system in an application scenario according to an embodiment of the present disclosure
  • FIG. 4 is a flowchart of a method for feeding back channel information according to Embodiment 3 of the present invention
  • FIG. 5 is a schematic structural diagram of a terminal according to Embodiment 4 of the present invention.
  • FIG. 6 is a schematic structural diagram of a base station according to Embodiment 5 of the present invention.
  • FIG. 7 is a schematic structural diagram of a communication system according to Embodiment 6 of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
  • the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.
  • the terminal may also be referred to as a user equipment (User Equipment, UE for short), a mobile station (Mobile Station, MS for short), a mobile terminal (Mobile Terminal), etc., and the terminal device may be wirelessly accessed.
  • the Radio Access Network (RAN) communicates with one or more core networks.
  • the terminal device may be a mobile phone (or "cellular" phone), a computer with a mobile terminal, etc., for example, the terminal may also be Portable, pocket, handheld, computer built-in or in-vehicle mobile devices that exchange language and/or data with a wireless access network.
  • the base station may be a base station (Base Transceiver Station) in a Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA) mobile communication system.
  • BTS may also be a base station (NodeB, NB for short) in a Wideband Code Division Multiple Access (WCDMA) mobile communication system, or may be a Long Term Evolution (LTE).
  • the embodiments of the present invention are not limited to the base station and the user equipment, but for convenience of description, the following embodiments will be described by taking an eNB and a UE as an example. However, it should be understood that the embodiments of the present invention are not limited thereto. For example, subsequent versions of LTE may apply methods and apparatuses according to embodiments of the present invention.
  • an access point that a user equipment needs to feed back can be divided into a reference access point and a non-reference access point.
  • the reference access point may be a serving cell or a node, such as a cell or a node that the user receives the physical layer broadcast channel, or the reference node may also be a cell or a node designated by the base station, such as the base station;
  • Other access points that need feedback are non-reference access points, which may be cooperating cells or nodes.
  • FIG. 1 is a flowchart of a method for feeding back channel information according to Embodiment 1 of the present invention.
  • This embodiment describes a method for feeding back channel information from the terminal side, that is, the execution subject of the embodiment is a terminal, such as a UE.
  • the method for feeding back channel information provided by this embodiment includes:
  • Step 11 Determine the need to feedback the channel information between access points.
  • the terminal can determine whether it is necessary to feed back the channel information between the access points to the base station in different manners.
  • the terminal may determine, according to the signaling sent by the base station, whether the channel information of the access point needs to be fed back to the base station. For example, when receiving the multiple access point feedback configuration signaling sent by the base station, the terminal determines that the channel information between the access points needs to be fed back.
  • the configuration signaling may be high layer signaling or dynamic signaling for indicating whether multiple access point feedback is required.
  • the terminal includes inter-access point channel information in the feedback content of the high-level signaling for a period of time until the high-level signaling changes; if the configuration signaling is State signaling, according to the dynamic signaling, the terminal feeds back channel information between the access points at the time of receiving the dynamic signaling or at one or more predetermined times after receiving the dynamic signaling.
  • the terminal may determine, according to the current transmission mode of the downlink data, whether the channel information between the access points needs to be fed back to the base station. For example, the terminal can determine that the channel information between the access points needs to be feedback when the current downlink data transmission mode is CoMP mode or CoMP Joint Transmission (JT) mode.
  • the transmission mode of the current downlink data of the terminal may be notified to the terminal by the base station by signaling; or, the terminal may be determined according to the number of coordinated access points configured by the base station for the terminal, that is, when the number of the coordinated access points is greater than zero, the current downlink data of the terminal
  • the transmission mode is CoMP mode or CoMP joint transmission mode.
  • the inter-access point channel information that the terminal needs to feed back to the base station may include: channel adjustment information between the reference access point and the non-reference access point.
  • the channel adjustment information between the reference access point and the non-reference access point may include: phase adjustment information between the reference access point and the non-reference access point, and/or, the reference access point and the non-reference access point Amplitude adjustment information between.
  • Step 12 Send feedback content to the base station on the resource configured by the base station, where the feedback content includes: channel adjustment information between the reference access point and the non-reference access point; the resources configured by the base station include: a dedicated resource configured by the base station to feed back the channel adjustment information; or all or part of resources configured by the base station for periodic feedback; or configured by the base station for aperiodic feedback All or part of the resources.
  • the feedback content includes: channel adjustment information between the reference access point and the non-reference access point
  • the resources configured by the base station include: a dedicated resource configured by the base station to feed back the channel adjustment information; or all or part of resources configured by the base station for periodic feedback; or configured by the base station for aperiodic feedback All or part of the resources.
  • the codebook of M (M ⁇ 1) bits may be used to perform quantization processing on the channel adjustment information; after that, the terminal carries the quantized channel adjustment information in the terminal The feedback channel is sent to the base station.
  • the codebook on which the channel adjustment information is subjected to quantization processing may be determined in advance, or may be indicated by a base station, such as a base station, by signaling. The advantage of this is that the quantization accuracy of the channel adjustment information can be adjusted as needed by the terminal or base station.
  • the terminal when determining that the inter-cell channel information needs to be fed back, the terminal may feed back the channel adjustment information between the reference access point and the non-reference access point to the base station, thereby being between the access points. Feedback of channel information provides a solution.
  • FIG. 2 is a flowchart of a method for feeding back channel information according to Embodiment 2 of the present invention.
  • the present embodiment describes a method for feeding back channel information from a base station, that is, the execution subject of the embodiment is a base station.
  • the method for feeding back channel information provided by this embodiment includes:
  • Step 21 Send multiple access point feedback configuration signaling to the terminal.
  • Step 22 Receive, on the configured resources, the feedback content that is sent by the terminal according to the multiple access point feedback configuration signaling, where the feedback content at least includes: between the reference access point and the non-reference access point Channel configuration information; the configured resource includes: a configured dedicated resource for feeding back the channel adjustment information; or, configured, all or part of resources for periodic feedback; or, configured, All or part of the resources used for aperiodic feedback.
  • the base station may further send, to the terminal, signaling for indicating a subband that needs to perform feedback of the channel adjustment information, where
  • the selected signaling indication method includes: sending, to the terminal, high layer signaling, to indicate one or more subband groups, for the terminal to determine, in the one or more subband groups, according to a preset rule.
  • the sub-band group of the channel adjustment information feedback and determining, in the determined sub-band group, a sub-band indicated by the base station that needs to perform feedback of the channel adjustment information; or sending high-layer signaling to the terminal, where Determining a plurality of subband groups, and transmitting dynamic signaling to the terminal, indicating a subband group that needs to perform feedback of the channel adjustment information in the plurality of subband groups, and determining, in the determined subband group
  • One of the subband groups may be indicated by a higher layer signaling, and one higher layer signaling is used to indicate one or more subbands in a subband group.
  • the above high layer signaling may be indicated by a bitmap encoding indication method, or may be indicated by a method indicating a starting position of the subband.
  • each bit of the bitmap encoding corresponds to S subbands, and S is an integer greater than or equal to 1.
  • S is an integer greater than or equal to 1.
  • Determining, by the determined sub-band group, a specific method of the sub-band indicated by the base station that needs to perform the channel adjustment information feedback may include: performing channel quality in one or more sub-bands of the determined sub-band group Preferably, one or more sub-bands are determined as sub-bands that need to perform feedback of the channel adjustment information; or, sending dynamic signaling to the terminal, to indicate that the channel needs to be performed in the determined sub-band group Adjust the subband of the feedback.
  • the base station sends N (N>1) high-level signaling to the terminal, where it is used to indicate N sub-band groups, where each sub-band group includes one or more sub-bands, and the terminal is configured according to a preset rule. Determining, in the N subband groups, a subband group that needs to perform feedback of the channel adjustment information, where the preset rule may include: a preset sequence of N subband groups preset.
  • the base station may use the same codebook used by the terminal to send the data sent by the UE.
  • An inverse quantization process is performed to obtain the channel adjustment information.
  • the codebook on which the channel adjustment information is quantized or inverse quantized may be determined in advance, or may be indicated by a base station, such as a base station, by signaling.
  • the base station may trigger the channel to feedback the channel adjustment information between the reference access point and the non-reference access point, thereby providing feedback for the channel information between the access points.
  • FIG. 3 is a schematic structural diagram of a coordinated multi-point transceiver system in an application scenario according to an embodiment of the present invention; Figure.
  • the reference access point is a serving cell or a primary cell of the UE;
  • the non-reference access point is a Coordinated Cell of the UE, or a secondary cell (Secondary Cell );
  • HI represents the downlink channel from the reference access point to the UE, and H2 represents the downlink channel from the non-reference access point to the UE .
  • the base station may determine a channel covariance matrix reflecting the downlink channel state information according to the channel information fed back by the UE and according to the reciprocity of the uplink and downlink channels.
  • the UE may separately or separately feed back the PMI or CQI of each access point, where the feedback mode of each access point, the downlink data transmission mode, and The specific feedback parameters corresponding to the feedback mode are independently configured.
  • the channel information that the base station needs to learn may include: a reference access point PMI (P1), a non-reference access point CSI (V2), channel adjustment information (W2) between the reference access point and the non-reference access point, and a cell Large scale power difference (D2).
  • P1 a reference access point PMI
  • V2 non-reference access point CSI
  • W2 channel adjustment information between the reference access point and the non-reference access point
  • D2 cell Large scale power difference
  • the D2 can be obtained by using parameters such as RSRP included in the measurement report sent by the UE; P1 is the channel state information of the reference access point; V2 is the channel space state information of the non-reference access point; W2 is the reference access point and non-reference
  • the channel adjustment information between the access points; P1 and W2 require the UE to feed back to the base station, where W2 is selected by the UE in the codebook and quantized by the codebook, and then fed back to the base station; V2 can be quantized by the UE as PMI to the base station. Or obtained by the base station according to the uplink and downlink channel reciprocity.
  • the vector F that can represent the combined multi-access point channel information can be constructed by:
  • the base station may process the signal to be transmitted by each antenna with reference to the vector F to enhance or cancel the signal of the multi-antenna arriving at the UE.
  • FIG. 3 is used as an application scenario, and the method for the UE to feed P1, V2, and W2 to the base station according to the embodiment of the present invention is described in detail in conjunction with FIG.
  • FIG. 4 is a flowchart of a method for feeding back channel information according to Embodiment 3 of the present invention.
  • the method shown in Figure 4 includes:
  • Step 41 The UE determines whether the feedback of the channel information between the access points needs to be performed, and if necessary, performs step 42; if not, the UE may use the existing method to feed back the single access point channel space state information, and end the process.
  • the channel information between the access points is: the channel adjustment information W2 between the reference access point and the non-reference access point, which may include: between the reference access point and the non-reference access point Phase adjustment information, and/or, reference amplitude adjustment information between the access point and the non-reference access point.
  • the single cell channel space state information may include: reference access point channel space state information, and/or non-reference access point channel space state information.
  • the reference access channel channel state information is: Reference access point ⁇ ( ⁇ )
  • non-reference access point channel space state information is: Non-reference access point CSI (V2) .
  • the UE may determine, according to configuration signaling sent by the base station, whether feedback of channel information between the access points needs to be performed.
  • the UE may determine that the channel information between the access points needs to be fed back when receiving the multiple access point feedback configuration signaling sent by the base station.
  • the terminal can determine the transmission mode of the channel information between the access points by using the current downlink data transmission mode.
  • the UE may determine that the channel information between the access points needs to be fed back when the current downlink data transmission mode is the CoMP mode or the CoMP joint transmission mode.
  • Step 42 The UE determines feedback content that needs to be fed back, and the feedback content includes at least: channel adjustment information between the reference access point and the non-reference access point.
  • the feedback content may further include reference channel state information of the access point, where the channel state information of the reference access point may be specifically a PMI of the reference access point, and the benefit of the processing is: when the base station determines that the UE needs to be When the multi-access point joint transmission mode is adjusted to the single access point transmission mode, since the base station acquires the channel state information of the reference access point, the reference may be based on the reference.
  • the access point channel space status information is processed by the data to be sent to the UE so as not to affect the communication of the UE.
  • the feedback content may further include non-reference access point channel space state information, and the non-reference access point channel space state information may be specifically a non-reference access point PMI.
  • the UE may feed back the non-reference access point PMI to the base station, and when receiving the PMI of the non-reference access point, the base station uses the received PMI of the non-reference access point as the CSI of the non-reference access point; The UE may also feed back the reference access point channel space state information and/or the non-reference access point channel space state information to the base station to improve feedback efficiency while feeding back the channel adjustment information.
  • the feedback content may further include a CQI of the non-reference access point.
  • Step 43 The UE determines a first frequency domain granularity of the channel adjustment information that needs to be fed back.
  • the first frequency domain granularity may include: a predefined sub-band, or a predefined sub-sub-band, or a sub-band selected by the terminal for performing the channel adjustment information feedback, or a predefined broadband, or a base station indication A subband of the channel adjustment information feedback is required.
  • the terminal may use one of the foregoing frequency domain granularities as the first frequency domain granularity according to a preset setting.
  • the terminal may use the foregoing frequency domain granularity as the first frequency domain granularity according to the base station, such as the signaling notified by the base station to the terminal, that is, the terminal may send according to the received base station.
  • the signaling is obtained by acquiring, by the base station, a subband that needs to perform feedback of the channel adjustment information.
  • the terminal acquiring, according to the received high layer signaling sent by the base station, one or more subband groups indicated by the high layer signaling; Determining, in the one or more sub-band groups, the sub-band group indicated by the base station that needs to perform the channel adjustment information feedback, and determining, in the determined sub-band group, the indication indicated by the base station, according to a preset rule. Performing subbands of the channel adjustment information feedback.
  • the terminal acquiring the high layer signaling indication according to the received high layer signaling sent by the base station.
  • Multiple sub-band group information and the terminal determines the base station in the multiple sub-band groups according to the received dynamic signaling sent by the base station, such as a Physical Downlink Control Channel (PDCCH) signaling Determining a subband group that needs to perform the channel adjustment information feedback, and determining, in the determined subband group, a subband indicated by the base station that needs to perform the channel adjustment information feedback.
  • PDCCH Physical Downlink Control Channel
  • the foregoing high-layer signaling may be indicated by a bitmap coding indication method, or may be indicated by a method indicating a start position of the sub-band, etc.; when the information indicated by the high-layer signaling includes N sub-band groups (N ⁇ 2), the preset rule may be Specifically, it is a preset sequence of N subband groups set in advance.
  • the terminal may determine the first frequency domain granularity according to respective non-periodic feedback modes of the reference access point and/or the non-reference access point.
  • the feedback mode of the single access point channel state information used in the 3rd Generation Partnership Project (3GPP) LTE Release 10 protocol may include: aperiodic feedback mode and periodic feedback mode; In the periodic feedback mode, the feedback is triggered by dynamic signaling sent by the base station to the UE. In the periodic feedback mode, the feedback is performed according to the period configured by the base station.
  • the channel state information of any access point i.e., the single access point channel state information, may include: the PMI and/or CQI of the access point. Examples of parameters of the PMI feedback type and CQI feedback type corresponding to the acyclic feedback mode determined by the GPP LTE Release 10 protocol are shown in Table 1.
  • Table 1 only records the PMI feedback type corresponding to the aperiodic feedback mode and some parameters of the CQI feedback type.
  • the aperiodic feedback modes that can be used to feed back the PMI are: aperiodic feedback mode 2-1, aperiodic feedback mode 2-2, and aperiodic feedback mode 3-1.
  • the downlink data transmission mode and feedback mode of each access point need to be configured separately, and each feedback mode can only be used in a specific transmission mode.
  • the terminal may determine the specific content of the channel state information of the access point that needs to be fed back according to the downlink data transmission mode and the feedback mode configured by any access point.
  • the single access point channel state information that needs to be fed back includes: a wideband CQI and a multiple PMI; wherein, if the access point downlink data transmission mode is transmission In mode 9 8-port CSI-RS (CSI-Reference Signal) configuration, the multi-PMI is: 1 wideband PMI-II and PMI-12 for each sub-band; where PMI-II is the first to form an 8-antenna PMI The index value, PMI-12 is the second index value that constitutes the 8-antenna PMI; if the access point is configured with the downlink data transmission mode, it is the other transmission mode corresponding to the aperiodic feedback mode 1-2, such as transmission mode 4 or transmission. In mode 6, the multi-PMI is: PMI for each sub-band.
  • CSI-RS CSI-Reference Signal
  • the single access point channel state information that needs to be fed back includes: the CQI, the wideband CQI, and the multiple PMI of the M subbands selected by the UE;
  • the downlink data transmission mode of the access point is the 8-port CSI-RS configuration of the transmission mode 9, and the multi-PMI is: the broadband PMI-II, the broadband PMI-12, and the M sub-band PMI-12; if the access The point downlink data transmission mode is another transmission mode corresponding to the aperiodic feedback mode 2-2, and the multiple PMI is: a broadband PMI and a PMI of M subbands.
  • the single access point channel state information that needs to be fed back includes: CQI and single PMI of each subband; wherein, if the access point downlink data transmission If the mode is the 8-port CSI-RS configuration of transmission mode 9, the single PMI is: Broadband PMI-II and wideband PMI-12; If the downlink data transmission mode of the access point is other transmission modes corresponding to the aperiodic feedback mode 3-1, the single PMI is: 1 broadband PMI.
  • the optional definition of the bandwidth of the subband in the above aperiodic feedback mode is as shown in Table 2.
  • the bandwidth of the subband refers to the number of resource blocks (RBs) included in each subband.
  • the bandwidth size refers to the total number of resource blocks included in the system bandwidth.
  • the terminal may determine the first frequency domain granularity according to respective aperiodic feedback modes of the reference access point and/or the non-reference access point.
  • the first frequency domain granularity of the channel adjustment information that needs to be fed back, and the third frequency of the feedback non-reference access point channel spatial state information determined by the reference access point or the non-reference access point aperiodic feedback mode The domain granularity is the same. Or, optionally, the first frequency domain granularity of the channel adjustment information that needs to be fed back, and the feedback non-reference access point channel space state information determined by the reference access point or the non-reference access point aperiodic feedback mode
  • the three-frequency domain granularity is similar; the specific may include:
  • the non-periodic feedback mode of the reference access point and/or the non-reference access point is: aperiodic feedback mode 1-2, determining that the first frequency domain granularity is specifically: the predefined sub Or a predefined secondary sub-band; wherein: the predefined sub-band may be a sub-band specified by an existing protocol of 3GPP LTE Release 10, as shown in Table 2; the bandwidth of the predefined secondary sub-band Greater than 0, and less than or equal to the bandwidth of the predefined subband, as shown in Table 3.
  • the base station can signal to the UE whether to use the predefined sub-band or the predefined secondary sub-band.
  • the advantage of using a sub-subband is that the frequency domain accuracy of the channel adjustment information can be improved.
  • the non-periodic feedback mode of the reference access point and/or the non-reference access point is: aperiodic feedback mode 2-2
  • determining that the first frequency domain granularity is specifically: Subband for feedback.
  • the UE may be a subband that selects a reference access point to be fed back, or a subband that the non-reference access point needs to perform feedback.
  • determining the A frequency domain granularity is specifically: the predefined secondary sub-band.
  • the non-periodic feedback mode of the reference access point and/or the non-reference access point is: aperiodic feedback mode 3-1
  • the predefined broadband can be the broadband specified by the existing 3GPP LTE Release 10 protocol, as shown in Table 2.
  • the UE may determine the first frequency domain granularity according to a periodic feedback mode of the non-reference access point.
  • Table 4 only records the PMI feedback type corresponding to the periodic feedback mode and some parameters of the CQI feedback type.
  • the periodic feedback modes that can be used for the feedback PMI are: periodic feedback mode 1-1 and periodic feedback mode 2-1.
  • the channel state information of the single access point that needs to be fed back includes: a wideband CQI and a single PMI; wherein, if the downlink data transmission mode of the access point is For the 8-port CSI-RS configuration of transmission mode 9, the single PMI is: wideband PMI-I1 and wideband PMI-I2; if the configured downlink data transmission mode of the cell is other transmission corresponding to periodic feedback mode 1-1 Mode, the single PMI is: Broadband PMI.
  • the single access point channel state information that needs to be fed back includes: the UE selects the CQI of the subband to be fed back and the corresponding subband PMI, Or, a wideband CQI and a wideband PMI, wherein the UE selects a subband: one subband selected by the UE in J (J ⁇ l) Bandwidth Part (BP); in particular, if the access point
  • the downlink data transmission mode is the 8-port CSI-RS configuration of transmission mode 9, and the sub-band PMI is: 1 sub-band PMI-II, 1 sub-band PMI-12, and the broadband PMI is: broadband PMI-11 and broadband PMI- 12.
  • the feedback mode of the non-reference access point of the UE is the periodic feedback mode
  • the first frequency domain granularity of the channel adjustment information that needs to be fed back, and the feedback of the periodic feedback mode determined by the non-reference access point are not
  • the second frequency domain granularity of the access point channel state information is the same; specifically, the second frequency domain granularity is: a non-reference access point period feedback mode determined, feedback non-reference The frequency domain granularity of the access point PMI and/or the non-reference access point CQI.
  • the second frequency domain granularity is: the downlink periodic feedback mode of the non-reference access point.
  • the determined frequency domain granularity of the non-reference access point PMI and/or the non-reference access point CQI is fed back at the current feedback moment.
  • the UE determines the first frequency domain granularity of the channel adjustment information that needs to be fed back according to the feedback mode of the reference access point and/or the reference access point, and therefore, is beneficial to multiplexing the existing feedback mode. , reduce changes to existing systems, improve system compatibility.
  • Step 44 The UE sends the channel adjustment information corresponding to the first frequency domain granularity to the base station, and the base station receives the channel adjustment information sent by the UE.
  • the UE may send the channel adjustment information corresponding to the first frequency domain granularity to a base station on a resource required by the base station to feed back the channel adjustment information; the base station is on the corresponding resource. Receiving the channel adjustment information.
  • the base station may specifically configure the feedback resource for the channel adjustment information by using dynamic signaling, and trigger the feedback of the channel adjustment information, and the UE sends the first frequency domain granularity corresponding to step 43 to the base station on the specially configured feedback resource.
  • the channel adjustment information may specifically configure the feedback resource for the channel adjustment information by using dynamic signaling, and trigger the feedback of the channel adjustment information, and the UE sends the first frequency domain granularity corresponding to step 43 to the base station on the specially configured feedback resource.
  • the UE may send, to the base station, the channel adjustment information corresponding to the first frequency domain granularity determined in step 43 on the resource configured by the base station for aperiodic feedback; the base station receives the Channel adjustment information.
  • the UE may be configured at the base station.
  • the channel adjustment information is sent to the base station on all or part of the resources of the aperiodic feedback non-reference access point PMI and/or the non-reference access point CQI.
  • the UE may send the base station to all or part of the resources configured by the base station for the aperiodic feedback non-reference access point CQI. Transmitting the channel adjustment information.
  • the UE may send the base station to all or part of the resources configured by the base station for the aperiodic feedback non-reference access point PMI. Transmitting the channel adjustment information.
  • the UE may send the channel adjustment information corresponding to the first frequency domain granularity determined in step 43 to the base station on all or part of the resources configured by the base station for periodic feedback; the base station receives on the corresponding resource.
  • the channel adjustment information may be sent to the base station on all or part of the resources configured by the base station for periodic feedback; the base station receives on the corresponding resource.
  • the UE may be configured at the base station, The channel adjustment information is sent to the base station for all or part of the resources of the periodic feedback non-reference access point PMI and/or the non-reference access point CQI.
  • the first frequency domain granularity of the channel adjustment information that needs to be fed back is the same as the second frequency domain granularity of the feedback non-reference access point PMI and/or the coordinated cell CQI, for example: used in the feedback subband Non-reference access point PMI and/or subband non-reference access point CQI resources, feedback subband with the channel adjustment information; used for feedback broadband non-reference access point PMI and/or subband non-reference access On the resource of the CQI, the broadband adjustment channel information is fed back; and so on.
  • the UE may send to the base station on all or part of resources configured by the base station for periodically feeding back the non-reference access point CQI.
  • the channel adjustment information In this case, the first frequency domain granularity of the channel adjustment information that needs to be fed back may be the same as the second frequency domain granularity of the non-reference access point CQI.
  • the UE may send to the base station on all or part of resources configured by the base station for periodically feeding back the non-reference access point PMI.
  • the channel adjustment information In this case, the first frequency domain granularity of the channel adjustment information that needs to be fed back may be the same as the second frequency domain granularity of the feedback non-reference access point PMI.
  • the feedback content determined by the above step 42 further includes the PMI of the non-reference access point as an example, and in the periodic feedback mode, the feedback resource multiplexing of the channel adjustment information is detailed. Detailed description.
  • the UE feeds back the PMI of the non-reference access point to the base station, and the base station may use the PMI of the non-reference access point as the CSI of the non-reference access point.
  • the periodic feedback mode of the non-reference access point is 1-1: for the periodic feedback of the non-reference access point channel space state information, the specific content of the non-reference access point spatial state information that needs to be fed back includes: PMI (or wideband PMI-II and wideband PMI-12) and wideband CQI; then: UE can feed back non-reference on resources originally used for feedback non-reference access point wideband PMI (or wideband PMI-II and wideband PMIJ2) In-band broadband PMI (or wideband PMI-II and wideband PMIJ2); the channel adjustment information is fed back on resources originally used to feed back non-reference access point wideband CQI.
  • PMI or wideband PMI-I and wideband PMI-12
  • CQI wideband CQI
  • the specific content of the non-reference access point spatial state information that needs to be periodically fed back on the resource includes: broadband PMI-II, broadband PMI-12 and wideband CQI; then: UE can be used for feedback Non-reference access point broadband PMI-II resources, feedback non-reference access point wideband PMI; feedback on resources originally used for feedback non-reference access point wideband PMI-12 and/or non-reference access point wideband CQI The channel adjustment information.
  • the periodic feedback mode of the non-reference access point is 2-1: the resource for feeding back the channel space state information of the non-reference access point, the corresponding periodic feedback mode is configured for the 8-port CSI-RS of the transmission mode 9 sub-mode 1 2-1 determined resources, the specific content of the non-reference access point spatial state information that needs to be fed back on the resource includes: broadband PMI-II, broadband PMI-12, and UE in J (J>1) bandwidth portion The PMI-I2 of the selected 1 subband; the UE selects the CQI of the subband to be fed back, the 1 subband selected by the UE in the J bandwidth parts, and feeds back the CQI and the wideband CQI of the subband.
  • the UE may feed back the broadband PMI of the non-reference access point on the resource of the broadband PMI-II originally used for feeding back the non-reference access point; and the PMI-12 and/or CQI originally used for feeding back the non-reference access point.
  • Resource-receiving the channel adjustment information where: on a resource for feeding back a sub-band PMI-12 of a non-reference access point and/or a sub-band CQI of a non-reference access point, the feedback sub-band is Channel adjustment information; the channel adjustment information is fed back over the resources of the wideband CQI for feeding back the non-reference access point and/or the wideband CQI of the non-reference access point.
  • the resource for periodically feeding back the channel space state information of the non-reference access point, the specific content of the non-reference access point spatial state information that needs to be fed back includes: Broadband PMI (or wideband PMI-II and wideband PMI-12), and PMI (or subband PMI-12) of one subband selected by the UE in J (J ⁇ l) bandwidth sections; UE selects feedback that needs to be fed The CQI of the subband, the one subband selected by the UE in the J bandwidth parts, and the CQI and the wideband CQI of the subband are fed back.
  • the UE may feed back the broadband PMI (or the broadband PMI-II and the broadband PMI of the non-reference access point) on the resources originally used for feeding back the non-reference access point broadband PMI (or the broadband PMI-II and the broadband PMI-12).
  • the feedback subband carries the channel adjustment information; and the broadband adjustment channel information is fed back on the resources of the broadband PMI-12 for feeding back the non-reference access point and/or the wideband CQI of the non-reference access point.
  • the feedback content determined by the above step 42 further includes the non-reference access point CQI as an example.
  • the feedback resource multiplexing of the channel adjustment information is described in detail.
  • the UE feeds back the CQI of the non-reference access point to the base station, and the base station can use the CQI of the non-reference access point as the CSI of the non-reference access point.
  • the channel adjustment information is also fed back while feeding back the CQI of the non-reference access point; wherein, in the feedback non-reference access point
  • the sub-band CQI also feeds back the channel adjustment information, and feeds back the wideband CQI of the non-reference access point, and also feeds back the broadband channel adjustment information, thereby implementing multiplexing for feeding back the non-reference access point.
  • CQI timing resources may be an uplink data bit for carrying the channel state information, and a channel carrying the bits.
  • PUCCH format 3 can carry
  • This embodiment implements feedback of the channel adjustment information.
  • the base station needs to configure feedback timing for each cell, and the number of bits occupied by the feedback based on the periodic feedback mode is small, such as only l lbits, so the periodic feedback resource is very valuable;
  • the UE may multiplex all or part of resources configured by the base station for periodic feedback to feed back the channel adjustment information, thereby reducing feedback overhead.
  • the UE may also multiplex all or part of resources configured by the base station for aperiodic feedback, and send the channel adjustment information to reduce feedback overhead.
  • the remaining feedback resources may be discarded, and the accuracy of the base station receiving the feedback signaling may be improved at this time; or, the remaining feedback resources may be Carrying other information, such as multiple access point joint CQI, downlink data acknowledgement information, access point selection information, etc., can improve the utilization efficiency of feedback resources.
  • FIG. 5 is a schematic structural diagram of a terminal according to Embodiment 4 of the present invention. As shown in FIG. 5, the terminal provided by this embodiment includes: a feedback determining module 51 and a feedback module 52.
  • the feedback determination module 51 can be used to determine that channel information between the access points needs to be fed back.
  • the feedback module 52 is configured to send, according to the determination result of the feedback determining module 51, the feedback content to the base station on the resource configured by the base station; the feedback content at least includes: a channel between the reference access point and the non-reference access point Adjusting the information; the resources configured by the base station include: a dedicated resource configured by the base station to feed back the channel adjustment information; or all or part of resources configured by the base station for periodic feedback; or All or part of the resources configured by the base station for aperiodic feedback.
  • the terminal may adopt different manners to determine whether the channel information between the access points needs to be fed back to the base station.
  • the feedback determining module 51 may be specifically configured to receive And the multiple access point feedback configuration signaling sent by the base station determines that the channel information between the access points needs to be fed back.
  • the feedback determining module 51 may be specifically configured to determine that the channel information between the access points needs to be fed back when the transmission mode of the current downlink data of the terminal is the CoMP mode or the CoMP joint transmission mode.
  • the terminal may further include: a granularity determining module 53.
  • the granularity determining module 53 can be configured to determine a first frequency domain granularity of the channel adjustment information that needs to be fed back.
  • the feedback module 52 is specifically configured to send, according to the determination result of the feedback determining module 51, the resource corresponding to the first frequency domain granularity determined by the granularity determining module 53 to the base station, on the resource configured by the base station.
  • Channel adjustment information is specifically configured to send, according to the determination result of the feedback determining module 51, the resource corresponding to the first frequency domain granularity determined by the granularity determining module 53 to the base station, on the resource configured by the base station.
  • the first frequency domain granularity may include: a predefined sub-band; or a predefined secondary sub-band, where the bandwidth of the predefined secondary sub-band is less than or equal to the predefined sub-band; or, the terminal selects
  • the subband that needs to perform the channel adjustment information feedback includes: a subband selected by the terminal at the reference access point and required to perform feedback of the channel adjustment information, or the terminal is in the non-reference connection a sub-band selected by the in-point to be subjected to the channel adjustment information feedback, or a sub-band selected by the terminal in the reference access point and the non-reference access point, to perform the channel adjustment information feedback Or a predefined broadband; or a subband indicated by the base station that needs to perform feedback of the channel adjustment information.
  • the terminal may determine, according to an indication of the base station, a feedback precision of the channel adjustment information.
  • the terminal may further include: a granularity indication obtaining module 54.
  • the granularity indication obtaining module 54 is configured to obtain, according to the received signaling sent by the base station, a subband indicated by the base station that needs to perform the channel adjustment information feedback.
  • the granularity determining module 53 is specifically configured to determine the subband that is obtained by the granularity indication obtaining module 54 and that is required by the base station to perform the channel adjustment information feedback, and is the first frequency domain granularity.
  • the granularity indication obtaining module 54 may further include: a subband group obtaining unit 541 and a granularity indicating acquiring unit 542.
  • the subband group obtaining unit 541 can be configured to send, according to the received high level, the base station The signaling, the one or more sub-band groups indicated by the high-level signaling, the granularity indication acquiring unit 542 is used in the one or more sub-band groups acquired by the sub-band group obtaining unit 541, according to And a preset rule, determining a subband group that is required by the base station to perform the channel adjustment information feedback, and determining, in the determined subband group, a subband indicated by the base station that needs to perform the channel adjustment information feedback.
  • the subband group obtaining unit 541 is configured to obtain, according to the received high layer signaling sent by the base station, multiple subband groups indicated by the high layer signaling; the granularity indication obtaining unit 542 is configured to be used in And determining, by the base station group, the subband group that is required by the base station to perform the channel adjustment information feedback, and determining the requirement indicated by the base station in the determined subband group. Performing subbands of the channel adjustment information feedback.
  • the terminal may determine, according to the feedback mode, a feedback precision of the channel adjustment information.
  • the granularity determining module 53 is specifically configured to determine the first frequency domain granularity according to a feedback mode of each of the reference access point and/or the non-reference access point.
  • the first frequency domain granularity may be the same as the frequency domain granularity corresponding to the periodic feedback mode or the aperiodic feedback mode.
  • the granularity determining module 53 is specifically configured to determine a second frequency domain granularity of the periodic feedback mode of each of the reference access point and/or the non-reference access point, where the first Frequency domain granularity.
  • the granularity determining module 53 is specifically configured to determine a third frequency domain granularity of the aperiodic feedback mode of each of the reference access point and/or the non-reference access point, where Second frequency domain granularity.
  • the first frequency domain granularity may be similar to the frequency domain granularity corresponding to the aperiodic feedback mode.
  • the granularity determining module 53 is specifically configured to: if the non-periodic feedback mode of the reference access point and/or the non-reference access point is: aperiodic feedback mode 1 2, determining that the first frequency domain granularity is: the predefined subband or the predefined secondary subband.
  • the granularity determining module 53 is specifically configured to determine, if the aperiodic feedback mode of the reference access point and/or the non-reference access point is: aperiodic feedback mode 2-2, determine the first The frequency domain granularity is: a subband selected by the terminal and required to be fed back. or, The granularity determining module 53 is specifically configured to: if the aperiodic feedback mode of the reference access point is the aperiodic feedback mode 1-2, and the aperiodic feedback mode of the non-reference access point is the aperiodic feedback mode 2 2, determining that the first frequency domain granularity is: the predefined secondary sub-band.
  • the granularity determining module 53 is specifically configured to: if the aperiodic feedback mode of the reference access point and/or the non-reference access point is: aperiodic feedback mode 3-1, determine the first The frequency domain granularity is: the predefined broadband.
  • the feedback module 52 may include one of the following units: a dedicated resource sending unit 521, an aperiodic feedback resource sending unit 522, and a periodic feedback resource sending unit 523.
  • the dedicated resource sending unit 521 is configured to send, according to the determination result of the feedback determining module 51, the channel adjustment information to the base station on a dedicated resource configured by the base station to feed back the channel adjustment information.
  • the aperiodic feedback resource sending unit 522 is configured to send the channel adjustment information to the base station on all or part of resources configured by the base station for aperiodic feedback according to the determination result of the feedback determining module 51.
  • the periodic feedback resource sending unit 523 can be configured to send the channel adjustment information to the base station on all or part of resources configured by the base station for periodic feedback according to the determination result of the feedback determining module 51.
  • the aperiodic feedback resource sending unit 522 is specifically configured to: if the feedback content does not include the non- Referring to the access point channel state information, according to the determination result of the feedback determining module, on all or part of resources configured by the base station for aperiodic feedback non-reference access point channel state information, The base station sends the channel adjustment information, where the channel state information includes channel space state information and channel quality information.
  • the aperiodic feedback resource sending unit 522 is specifically configured to: if the feedback content includes non-reference access point channel space state information And transmitting, according to the determination result of the feedback determining module, the channel adjustment information to the base station on all or part of resources configured by the base station for aperiodic feedback non-reference access point channel quality information;
  • the aperiodic feedback resource sending unit 522 has The method may be used to: if the feedback content includes non-reference access point channel space state information, according to the determination result of the feedback determining module, the channel space state configured for the aperiodic feedback non-reference access point configured by the base station The channel adjustment information is sent to the base station on all or part of the resources of the information.
  • the periodic feedback resource sending unit 523 is specifically configured to: if the feedback content does not include non-reference And the inbound channel state information is sent to the base station according to the determination result of the feedback determining module, on all or part of resources configured by the base station for periodically feeding back non-reference access point channel state information.
  • Channel adjustment information the channel state information includes channel space state information and channel quality information; or, the periodic feedback resource sending unit 523 is specifically configured to: if the feedback content includes non-reference access point channel space state information, according to the a determination result of the feedback determining module, where the channel adjustment information is sent to the base station on all or part of resources configured by the base station for periodically feeding back non-reference access point channel quality information; or, the periodic feedback resource is sent Unit 523 is specifically applicable if the feedback content package Non-reference access point channel quality information, according to the determination result of the feedback determining module, on all or part of resources configured by the base station for periodically feeding back non-reference access point channel space state information, The base station transmits the channel adjustment information.
  • the terminal may further include: a quantization processing module 55.
  • the quantization processing module 55 may be configured to perform quantization processing on the channel adjustment information before the feedback module sends the channel adjustment information, where the quantization processing module performs a quantization process on which the channel adjustment information is quantized Predetermined or specified by the base station, the codebook includes one or more of the following constellations: a 1-bit BPSK constellation, a 2-bit QPSK constellation, a 3-bit 8PSK constellation, and a 4-bit 16QAM Constellation map.
  • the feedback module 52 is configured to send the quantized channel adjustment information to the base station according to the determination result of the feedback determining module 51, on the resource configured by the base station.
  • the terminal provided in this embodiment may be opposite to the base station when determining that the inter-cell channel information needs to be fed back
  • the channel adjustment information between the reference access point and the non-reference access point is fed, thereby providing a solution for feedback of channel information between the access points.
  • FIG. 6 is a schematic structural diagram of a base station according to Embodiment 5 of the present invention.
  • the base station provided by this embodiment includes: a feedback signaling sending module 61 and a feedback content receiving module 62.
  • the feedback signaling sending module 61 can be configured to send multiple access point feedback configuration signaling to the terminal.
  • the feedback content receiving module 62 is configured to receive, on the configured resource, the feedback content that is sent by the terminal according to the multiple access point feedback configuration signaling in the feedback instruction sending module, where the feedback content includes: Referring to channel adjustment information between the access point and the non-reference access point; the configured resource includes: a configured dedicated resource for feeding back the channel adjustment information; or, configured, for a period All or part of the resources of the feedback; or, all or part of the resources that have been configured for aperiodic feedback.
  • the base station may indicate that the terminal needs to perform the subband of the channel adjustment information feedback.
  • the base station may further include: a feedback subband indication module 63.
  • the feedback subband indication module 63 is configured to send, after the feedback instruction sending module sends the multiple access point feedback configuration signaling, a message to the terminal, indicating a subband that needs to perform the channel adjustment information feedback. make.
  • the base station can indicate the terminal in different manners, and the subband of the channel adjustment information feedback needs to be performed.
  • the feedback subband indication module 63 is specifically configured to: after the feedback instruction sending module sends the multiple access point feedback configuration signaling, send high layer signaling to the terminal, to indicate one or a plurality of subband groups, wherein the terminal determines, in the one or more subband groups, a subband group that needs to perform feedback of the channel adjustment information according to a preset rule, and determines the determined subband group in the determined subband group.
  • the sub-band indicated by the base station to perform the channel adjustment information feedback; or the feedback sub-band indication module 63 is specifically configured to: after the feedback instruction sending module sends the multiple access point feedback configuration signaling, Transmitting, by the terminal, high layer signaling, which is used to indicate a plurality of subband groups, and sending dynamic signaling to the terminal, to indicate a subband group that needs to perform feedback of the channel adjustment information in the multiple subbands, and Determining the base station in the determined subband group The indicated sub-bands for which the channel adjustment information feedback is required.
  • the base station may further include: an inverse quantization processing module 64.
  • the inverse quantization processing module 64 is configured to perform inverse quantization processing on the channel adjustment information received by the feedback content receiving module based on a predetermined codebook; the codebook includes one or more constellation diagrams: 1 bit BPSK constellation, 2-bit QPSK constellation, 3-bit 8PSK constellation, 4-bit 16QAM constellation.
  • the base station provided in this embodiment can trigger the terminal to feed back the channel adjustment information between the reference access point and the non-reference access point by using the signaling, thereby providing a solution for the feedback of the channel information between the access points.
  • the working mechanism of the base station in this embodiment refer to the description of the base station, the base station or the eNB in the foregoing method embodiment, which is not mentioned here.
  • FIG. 7 is a schematic structural diagram of a communication system according to Embodiment 6 of the present invention.
  • the communication system provided in this embodiment includes: a terminal 71 and a base station 72.
  • the specific structure of the terminal 71 can be referred to the description of the corresponding embodiment in FIG. 5.
  • the terminal when determining that the inter-cell channel information needs to be fed back, the terminal may feed back the channel adjustment information between the reference access point and the non-reference access point to the base station, thereby being the channel information between the access points. Feedback provides a solution.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment as described in the embodiments, or may be correspondingly changed in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.

Abstract

本发明实施例公开了一种信道信息的反馈方法、终端和基站。其中方法包括:确定需要反馈接入点间信道信息;在基站配置的资源上,向所述基站发送反馈内容;其中,所述反馈内容至少包括:参考接入点与非参考接入点之间的信道调整信息;所述基站配置的资源包括:所述基站配置的、用于反馈所述信道调整信息的专用资源;或者,所述基站配置的、用于周期反馈的全部或部分资源;或者,所述基站配置的、用于非周期反馈的全部或部分资源。本发明实施例实现了参考接入点与非参考接入点之间的信道调整信息的反馈。

Description

信道信息的反馈方法、 终端和基站 本申请要求于 2011 年 7 月 7 日提交中国专利局、 申请号为 201110189916.2、 发明名称为"信道信息的反馈方法、 终端和基站 "的中国专 利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域 本发明实施例涉及通信技术领域, 尤其涉及一种信道信息的反馈方法、 终端和基站。 背景技术 在通信系统中, 可采用多点传输技术, 如协同多点收发(Coordinated
Multiple Point transmission and reception, 简称 CoMP )技术, 来获得较高的 用户吞吐率。 CoMP技术中, 多个具有多天线功能的接入点( Access Point, 简称 AP )在相同的时频资源上, 为一个或多个用户设备 ( User Equipment , 简称 UE )提供数据传输服务。 对于 CoMP技术而言, 基站需要使用终端和 候选接入点、 集之间的信道状态信息作为输入量或者参考量, 来完成发送 预编码、 多用户配对等下行资源调度和信号发送等过程, 因此, 准确的下 行信道状态信息的反馈具有重要的意义。
信道状态信息可分为信道空间状态信息和信道质量信息, 信道空间状 态信息例如: 预编码矩阵指示符 ( Precoding Matrix Indicator, 简称 PMI ) 等, 信道质量信息例如: 信道质量指示符(Channel Quality Indicator, 简称 CQI )等。 现有技术单接入点的信道空间状态信息的反馈方法例如: UE从 已定义的码本中选择最优的一个码字, 反馈该码字在码本中的 PMI; 基站 利用上下行信道的互易性获得下行信道的信道协方差矩阵, 具体的: 基站 可以通过测量上行探测参考信号 (Sounding Reference Signal, 简称 SRS ) 获得下行信道的信道协方差矩阵, 并依据 UE反馈的 PMI计算下行信道状 态信息。
联合处理( Joint Processing, 简称 JP )多点传输系统中, 多个接入点在 相同的时频资源上为 UE提供数据传输服务。不同接入点发送的数据信号到 达同一 UE时, 可能增强或削弱数据信号的质量。 因此, 多个接入点需要联 合对待发送的数据信号进行处理, 例如对待发送的数据信号进行加权并映 射到不同的接入点的不同天线上。 接入点对待发送的数据信号进行联合处 理, 不仅需要考虑单接入点的信道空间状态信息, 还需考虑不同接入点之 间的信道信息, 以使多个接入点到达 UE的数据信号质量最优。 其中, 单接 入点的信道空间状态信息, 如单接入点的 PMI 和 /或信道质量指示符 ( Channel Quality Indicator, 简称 CQI )等信息, 可采用上述现有技术反馈; 但对于不同接入点之间的信道信息, 目前还缺少相应的反馈机制。 发明内容
本发明实施例提供一种信道信息的反馈方法、 终端和基站, 用以实现 参考接入点和非参考接入点之间的信道调整信息的反馈。
本发明实施例提供了一种信道信息的反馈方法, 包括:
确定需要反馈接入点间信道信息;
在基站配置的资源上, 向所述基站发送反馈内容;
其中, 所述反馈内容至少包括: 参考接入点与非参考接入点之间的信 道调整信息; 所述基站配置的资源包括: 所述基站配置的、 用于反馈所述 信道调整信息的专用资源; 或者, 所述基站配置的、 用于周期反馈的全部 或部分资源; 或者, 所述基站配置的、 用于非周期反馈的全部或部分资源。
本发明还实施例另提供了一种信道信息的反馈方法, 包括:
向终端发送多接入点反馈配置信令;
在已配置的资源上, 接收所述终端根据所述多接入点反馈配置信令发 送的反馈内容, 其中, 所述反馈内容至少包括: 参考接入点与非参考接入 点之间的信道调整信息; 所述已配置的资源包括: 已配置的、 用于反馈所 述信道调整信息的专用资源; 或者, 已配置的、 用于周期反馈的全部或部 分资源; 或者, 已配置的、 用于非周期反馈的全部或部分资源。
本发明实施例还提供了一种终端, 包括:
反馈确定模块, 用于确定需要反馈接入点间信道信息;
反馈模块, 用于根据所述反馈确定模块的确定结果, 在基站配置的资 源上, 向所述基站发送反馈内容; 所述反馈内容至少包括: 参考接入点与 非参考接入点之间的信道调整信息; 所述基站配置的资源包括: 所述基站 配置的、 用于反馈所述信道调整信息的专用资源; 或者, 所述基站配置的、 用于周期反馈的全部或部分资源; 或者, 所述基站配置的、 用于非周期反 馈的全部或部分资源。
本发明实施例还提供了一种基站, 包括:
反馈指令发送模块, 用于向终端发送多接入点反馈配置信令; 反馈内容接收模块, 用于在已配置的资源上, 接收所述终端根据所述 反馈指令发送模块中的所述多接入点反馈配置信令而发送的反馈内容, 所 述反馈内容至少包括: 参考接入点与非参考接入点之间的信道调整信息; 所述已配置的资源包括: 已配置的、 用于反馈所述信道调整信息的专用资 源; 或者, 已配置的、 用于周期反馈的全部或部分资源; 或者, 已配置的、 用于非周期反馈的全部或部分资源。
本发明实施例提供的信道信息的反馈方法、 终端和基站中, 终端可在 确定需要反馈小区间信道信息时, 向基站反馈参考接入点和非参考接入点 之间的信道调整信息, 从而为接入点间信道信息的反馈提供了解决方案。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对 实施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员 来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的 附图。
图 1为本发明实施例一提供的信道信息的反馈方法流程图;
图 2为本发明实施例二提供的信道信息的反馈方法流程图;
图 3 为本发明实施例提供的应用场景中协同多点收发系统的结构示意 图;
图 4为本发明实施例三提供的信道信息的反馈方法的流程图; 图 5为本发明实施例四提供的终端的结构示意图;
图 6为本发明实施例五提供的基站的结构示意图;
图 7为本发明实施例六提供的通信系统的结构示意图。 具体实施方式 为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本 发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描 述, 显然, 所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有付出创造性劳动前提 下所获得的所有其他实施例, 都属于本发明保护的范围。
本发明以下实施例的序号仅仅为了描述, 不代表实施例的优劣。
在本发明实施例中, 终端也可称之为用户设备( User Equipment , 简称 为 UE )、 移动台 ( Mobile Station, 简称 MS )、 移动终端 ( Mobile Terminal ) 等, 该终端设备可以经无线接入网 (Radio Access Network, 简称 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)、 具有移动终端的计算机等, 例如, 终端还可以是便携式、 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 语言和 /或数据。 在本发明实施例中, 基站可以是全球移动通信系统( Global System for Mobile Communications, 简称 GSM )或码分多址 ( Code Division Multiple Access, 简称 CDMA )移动通信系统中的基站 ( Base Transceiver Station, 简称 BTS ) , 也可以是宽带码分多址 (Wideband Code Division Multiple Access, 简称 WCDMA )移动通信系统中的基站(NodeB, 简称为 NB ), 还可以是长期演进 ( Long Term Evolution, 简称 LTE ) 中的演进型基站 ( Evolutional Node B , 简称 eNB或 e-NodeB ), 或者中继器( Relay )等。
本发明实施例对基站和用户设备并不限定, 但为描述方便, 下述实施 例将以 eNB和 UE为例进行说明。 但应理解本发明实施例并不限于此, 例 如 LTE后续的版本都可以应用根据本发明实施例的方法和装置。
本发明实施例中用户设备需要反馈的接入点可分为参考接入点和非参 考接入点。 其中: 参考接入点可以是服务小区或节点, 如用户接收物理层 广播信道的小区或节点, 或者, 参考节点还可以是基站如基站指定的小区 或节点; 除参考接入点之外的、 需要反馈的其他接入点, 即为非参考接入 点, 该非参考接入点可以是协作小区或节点。
图 1 为本发明实施例一提供的信道信息的反馈方法流程图。 本实施例 从终端侧描述信道信息的反馈方法, 即本实施例的执行主体为终端, 如 UE 等。 具体如图 1所示, 本实施例提供的信道信息的反馈方法包括:
步骤 11 : 确定需要反馈接入点间信道信息。
终端可采用不同方式, 确定是否需要向基站反馈接入点间信道信息。 可选的, 终端可根据基站发送的信令, 确定是否向所述基站需要进行 接入点间信道信息的反馈。 例如: 终端可在接收到基站发送的多接入点反 馈配置信令时, 确定需要反馈接入点间信道信息。 所述配置信令可以是用 于指示是否需要进行多接入点反馈的高层信令或动态信令。 如果所述配置 信令为高层信令, 终端根据该高层信令在一段持续的时间内的反馈内容中 包含接入点间信道信息, 直到高层信令改变为止; 如果所述配置信令为动 态信令, 终端根据该动态信令在收到该动态信令的时刻或收到该动态信令 后的一个或多个预先规定时刻上, 反馈接入点间信道信息。
或者, 终端可根据当前下行数据的传输模式, 确定是否需要向基站反 馈接入点间信道信息。 例如: 终端可在当前下行数据传输模式为 CoMP模 式或 CoMP联合传输( Joint Transmission, 简称 JT )模式时, 确定需要反 馈接入点间信道信息。 终端当前下行数据的传输模式可由基站通过信令通 知给终端; 或者, 终端可根据基站为终端配置的协作接入点数目来确定, 即当协作接入点数目大于零时, 终端当前下行数据的传输模式为 CoMP模 式或 CoMP联合传输模式。
终端需要向基站反馈的接入点间信道信息可包括: 参考接入点和非参 考接入点之间的信道调整信息。 参考接入点和非参考接入点之间的信道调 整信息可包括: 参考接入点和非参考接入点之间的相位调整信息, 和 /或, 参考接入点和非参考接入点之间的振幅调整信息。
步骤 12: 在基站配置的资源上, 向所述基站发送反馈内容; 所述反馈 内容至少包括: 参考接入点和非参考接入点之间的信道调整信息; 所述基 站配置的资源包括: 所述基站配置的、 用于反馈所述信道调整信息的专用 资源; 或者, 所述基站配置的、 用于周期反馈的全部或部分资源; 或者, 所述基站配置的、 用于非周期反馈的全部或部分资源。
终端向基站发送所述信道调整信息之前, 可采用 M ( M≥1 ) 比特的码 本, 对所述信道调整信息进行量化处理; 之后, 终端将量化处理后的所述 信道调整信息, 承载在反馈信道上并向基站发送。
例如: 终端对待发送的所述信道调整信息进行量化处理所基于的码本, 可包括以下其中一个或多个星座图: M=l 比特的二进制相移键控 ( Binary Phase Shift Keying, 简称 BPSK ) 的星座图, M=2 比特的正交相移编码 ( Quadrature Phase Shift Keying, 简称 QPSK ) 的星座图, Μ=3比特的八相 相移编码 ( 8 Phase Shift Keying, 简称 8PSK )的星座图, M=4比特的 16正 交幅度调制( 16 Quadrature Amplitude Modulation,简称 16QAM )的星座图。 对所述信道调整信息进行量化处理所基于的码本, 可预先确定, 也可 由基站, 如基站通过信令指示终端。 这样做的好处是信道调整信息的量化 精度可以随着终端或基站的需要进行调整。
本实施例提供的信道信息的反馈方法中, 终端可在确定需要反馈小区 间信道信息时, 向基站反馈参考接入点和非参考接入点之间的信道调整信 息, 从而为接入点间信道信息的反馈提供了解决方案。
图 2为本发明实施例二提供的信道信息的反馈方法流程图。 本实施例 从基站描述信道信息的反馈方法, 即本实施例的执行主体为基站。 具体如 图 2所示, 本实施例提供的信道信息的反馈方法包括:
步骤 21 : 向终端发送多接入点反馈配置信令。
步骤 22: 在已配置的资源上, 接收所述终端根据所述多接入点反馈配 置信令发送的反馈内容, 所述反馈内容至少包括: 参考接入点与非参考接 入点之间的信道调整信息; 所述已配置的资源包括: 已配置的、 用于反馈 所述信道调整信息的专用资源; 或者, 已配置的、 用于周期反馈的全部或 部分资源; 或者, 已配置的、 用于非周期反馈的全部或部分资源。
上述技术方案中, 可选的, 在基站接收终端发送的所述反馈内容之前, 基站还可向所述终端发送, 用于指示需要进行所述信道调整信息反馈的子 带的信令, 其中可选的信令指示方法包括: 向所述终端发送高层信令, 用 于指示一个或多个子带组, 以供所述终端根据预设规则, 在所述一个或多 个子带组中确定需要进行所述信道调整信息反馈的子带组, 并在确定的子 带组中确定所述基站指示的需要进行所述信道调整信息反馈的子带; 或者, 向所述终端发送高层信令, 用于指示多个子带组, 并向所述终端发送动态 信令, 用于指示在所述多个子带组中需要进行所述信道调整信息反馈的子 带组 , 并在确定的子带组中确定所述基站指示的需要进行所述信道调整信 息反馈的子带。 其中一个子带组可以用一个高层信令指示, 一个高层信令用于指示一 个子带组中的一个或多个子带。 上述高层信令可采用位图编码的指示方法 指示, 或采用指示子带起始位置的方法指示等。 其中位图编码的每个比特 对应于 S个子带, S为大于等于 1的整数。 当位图编码的某个比特为 "1" 时,该比特对应的 S个子带需要进行所述信道调整信息反馈;每个比特与 S 个子带的对应关系可预先确定。 在确定的子带组中确定所述基站指示的需 要进行所述信道调整信息反馈的子带的具体方法可包括: 在所述确定的子 带组的一个或多个子带中, 将信道质量最好的 1 个或多个子带确定为需要 进行所述信道调整信息反馈的子带; 或者, 向所述终端发送动态信令, 用 于指示在所述确定的子带组中需要进行所述信道调整信息反馈的子带。 可 选的, 基站向所述终端发送 N ( N>1 )个高层信令, 用于指示 N个子带组, 其中每个子带组包含一个或多个子带, 以供所述终端根据预设规则, 在所 述 N个子带组中确定需要进行所述信道调整信息反馈的子带组, 预设规则 可包括: 预先设置的 N个子带组的轮流顺序。
可选的, 如果终端采用 M ( M≥1 ) 比特的码本对发送的所述信道调整 信息进行了量化处理, 则基站可采用与终端使用的相同的码本对接收到的 UE发送的数据进行反量化处理, 以得到所述信道调整信息。
对所述信道调整信息进行反量化处理的码本可包括以下其中一个或多 个星座图: M=l比特的 BPSK的星座图,M=2比特的 QPSK的星座图 , M=3 比特的 8PSK的星座图 , M=4比特的 16QAM的星座图。
对所述信道调整信息进行量化或反量化处理所基于的码本, 可预先确 定, 也可由基站, 如基站通过信令指示终端。
本实施例提供的信道信息的反馈方法中, 基站可通过信令触发终端反 馈参考接入点和非参考接入点之间的信道调整信息, 从而为接入点间信道 信 , ¾的反馈提供了解决方案。
图 3 为本发明实施例提供的应用场景中协同多点收发系统的结构示意 图。 如图 3所示的系统中, 参考接入点是 UE的服务小区( Serving Cell )或 主小区( Primary Cell );非参考接入点是 UE的协作小区( Coordinated Cell ) , 或副小区 ( Secondary Cell ); HI表示从参考接入点到 UE的下行信道, H2 表示从非参考接入点到 UE的下行信道。 基站可根据 UE反馈的信道信息, 并依据上下行信道互易性, 确定反映下行信道状态信息的信道协方差矩阵。
对于如图 3所示的多接入点反馈的应用场景中, UE可单独或同时反馈 多个接入点各自的 PMI或 CQI, 其中, 每个接入点的反馈模式、 下行数据 传输模式以及反馈模式对应的具体反馈参数, 是独立配置的。
基站需要获知的信道信息可包括: 参考接入点 PMI ( Pl ) 、 非参考接 入点 CSI ( V2 )、 参考接入点和非参考接入点之间的信道调整信息( W2 ) 、 以及小区间大尺度功率差 ( D2 ) 。 其中, D2可通过 UE发送的测量报告 中包括的 RSRP等参数获取; P1为参考接入点信道空间状态信息; V2为非 参考接入点信道空间状态信息; W2为参考接入点和非参考接入点之间的信 道调整信息; P1以及 W2需要 UE向基站反馈, 其中 W2由 UE在码本中 选取并采用码本进行量化处理后反馈给基站; V2可以由 UE量化为 PMI向 基站反馈, 或由基站依据上下行信道互易性获得。 基站在获取 Pl、 V2、 W2和 D2之后, 可采用下式构造可以表征联合的多接入点信道信息的向量 F:
F = normalize { 一 — ―—— "—一 1 上式中, " normalize " 为归一化函数, 上式中涉及的符号 表示相 应参数的共轭, 向量 F的各元素对应各天线联合发送的权重。 基站可参考 向量 F对各天线待发送的信号进行处理,以增强或抵消多天线到达 UE的信 号。
下面以图 3所示的系统为应用场景, 并结合图 4详细说明本发明实施 例 UE向基站反馈 P 1、 V2和 W2的方法。 图 4 为本发明实施例三提供的信道信息的反馈方法的流程图。 如图 4 所示的方法包括:
步骤 41 : UE确定是否需要进行接入点间信道信息的反馈, 如果需要, 执行步骤 42;如果不需要, UE可采用现有方法反馈单接入点信道空间状态 信息, 结束本流程。
对应图 3 所示系统, 接入点间信道信息即为: 参考接入点和非参考接 入点之间的信道调整信息 W2, 可包括: 参考接入点和非参考接入点之间的 相位调整信息, 和 /或, 参考接入点和非参考接入点之间的振幅调整信息。
单小区信道空间状态信息可包括: 参考接入点信道空间状态信息, 和 / 或, 非参考接入点信道空间状态信息。 在图 3 所示的系统中, 参考接入点 信道空间状态信息即为: 参考接入点 ΡΜΙ ( ΡΙ ) , 非参考接入点信道空间 状态信息即为: 非参考接入点 CSI ( V2 ) 。
( 1 )可选的, UE 可根据基站发送的配置信令, 确定是否需要进行接 入点间信道信息的反馈。
例如: UE可在接收到基站发送的多接入点反馈配置信令时, 确定需要 反馈接入点间信道信息。
( 2 )可选的, 终端可当前下行数据的传输模式, 确定是否需要进行接 入点间信道信息的反馈。
例如: UE可在当前下行数据传输模式为 CoMP模式或 CoMP联合传输 模式时, 确定需要反馈接入点间信道信息。
步骤 42: UE确定需要反馈的反馈内容, 所述反馈内容至少包括: 参考 接入点和非参考接入点之间的信道调整信息。
可选的, 所述反馈内容还可包括参考接入点信道空间状态信息, 参考 接入点信道空间状态信息可具体为参考接入点的 PMI, 如此处理的好处在 于:当基站确定需要将 UE从多接入点联合传输模式调整为单接入点传输模 式时, 由于基站获取有参考接入点信道空间状态信息, 因此, 可根据参考 接入点信道空间状态信息对待发送给 UE 的数据进行处理, 从而不会影响 UE的通信。
可选的, 所述反馈内容还可包括非参考接入点信道空间状态信息, 非 参考接入点信道空间状态信息可具体为非参考接入点 PMI。 具体的, UE可 向基站反馈非参考接入点 PMI, 基站在接收到非参考接入点的 PMI时, 将 接收到的非参考接入点的 PMI, 作为非参考接入点的 CSI; 从而使得 UE在 反馈所述信道调整信息的同时, 还可向基站反馈参考接入点信道空间状态 信息和 /或非参考接入点信道空间状态信息, 以提高反馈效率。 可选的, 所 述反馈内容还可包括非参考接入点的 CQI。
步骤 43: UE确定需要反馈的所述信道调整信息的第一频域粒度。 所述第一频域粒度, 可包括: 预定义的子带, 或者预定义的次子带, 或者终端选择的需要进行所述信道调整信息反馈的子带, 或者预定义的宽 带, 或者基站指示的需要进行所述信道调整信息反馈的子带。
( 1 )可选的, 终端可根据预先设置固定采用上述频域粒度中的其中一 种, 作为所述第一频域粒度。
( 2 )可选的, 终端可根据基站, 如基站通知给终端的信令, 获知应采 用上述哪种频域粒度作为所述第一频域粒度, 即终端可根据接收到的所述 基站发送的信令 , 获取所述基站指示的需要进行所述信道调整信息反馈的 子带。
基站指示的需要进行所述信道调整信息反馈的子带的获取方式 , 例如: 终端根据接收到的所述基站发送的高层信令, 获取所述高层信令指示的一 个或多个子带组; 并且终端在所述一个或多个子带组中根据预设规则, 确 定所述基站指示的需要进行所述信道调整信息反馈的子带组, 并在确定的 子带组中确定所述基站指示的需要进行所述信道调整信息反馈的子带。
基站指示的需要进行所述信道调整信息反馈的子带的获取方式 , 又例 如: 终端根据接收到的所述基站发送的高层信令, 获取所述高层信令指示 的多个子带组信息; 且终端根据接收到的所述基站发送的动态信令, 如物 理下行控制信道 ( Physical Downlink Control Channel简称 PDCCH )信令, 在所述多个子带组中确定所述基站指示的需要进行所述信道调整信息反馈 的子带组, 并在确定的子带组中确定所述基站指示的需要进行所述信道调 整信息反馈的子带。
上述高层信令可采用位图编码的指示方法指示, 或采用指示子带起始 位置的方法指示等; 在高层信令指示的信息包括 N个子带组(N≥2 ) 时, 预设规则可具体为预先设置的 N个子带组的轮流顺序。
( 3 )可选的, 终端可根据所述参考接入点和 /或非参考接入点各自非周 期反馈模式, 确定所述第一频域粒度。
具体的 , 第三代合作伙伴项目 ( the 3rd Generation Partnership Project, 简称 3GPP ) LTE Release 10协议中采用的单接入点信道状态信息的反馈模 式可包括: 非周期反馈模式和周期反馈模式; 其中非周期反馈模式下, 反 馈是由基站发给 UE的动态信令进行触发的; 周期反馈模式下,反馈是按照 基站配置的周期进行的。 任一接入点的信道状态信息, 即单接入点信道状 态信息可包括: 该接入点的 PMI和 /或 CQI。 3 GPP LTE Release 10协议确 定的、 非周期反馈模式对应的 PMI反馈类型和 CQI反馈类型的参数示例, 如表 1所示。
表 1
Figure imgf000014_0001
高层配置的子带 非周期 非周期
CQI (即:每个子 反馈模 反馈模
带的 CQI ) 式 3-0 式 3-1 表 1仅记录了非周期反馈模式对应的 PMI反馈类型和 CQI反馈类型的 部分参数。 上述表 1中, 可用于反馈 PMI的非周期反馈模式有: 非周期反 馈模式 2-1、 非周期反馈模式 2-2和非周期反馈模式 3-1。 各接入点下行数 据传输模式和反馈模式均需要单独配置, 每种反馈模式只能在特定的传输 模式下使用。 终端可根据任一接入点被配置的下行数据传输模式和反馈模 式, 确定需要反馈的该接入点信道状态信息的具体内容。
如果某接入点被配置的反馈模式为非周期反馈模式 1-2, 需要反馈的单 接入点信道状态信息包括: 宽带 CQI和多 PMI; 其中, 如果该接入点下行 数据传输模式为传输模式 9的 8端口 CSI-RS ( CSI-Reference Signal )配置, 则该多 PMI即为: 1个宽带 PMI— II和每个子带的 PMI— 12; 其中 PMI— II为 组成 8天线 PMI的第一索引值, PMI— 12为组成 8天线 PMI的第二索引值; 如果该接入点被配置的下行数据传输模式,为非周期反馈模式 1-2对应的其 他传输模式, 如传输模式 4或传输模式 6时, 该多 PMI即为: 每个子带的 PMI。
如果某接入点被配置的反馈模式为非周期反馈模式 2-2, 需要反馈的单 接入点信道状态信息包括: UE选择的 M个子带的 CQI、 宽带 CQI、 和多 PMI; 其中, 如果该接入点的下行数据传输模式为传输模式 9 的 8 端口 CSI-RS配置, 则该多 PMI即为: 宽带 PMI— II、 宽带 PMI— 12和 M个子带 的 PMI— 12; 如果该接入点下行数据传输模式为非周期反馈模式 2-2对应的 其他传输模式 , 则该多 PMI即为: 宽带 PMI和 M个子带的 PMI。
如果某接入点被配置的反馈模式为非周期反馈模式 3-1 , 需要反馈的单 接入点信道状态信息包括: 每个子带的 CQI和单 PMI; 其中, 如果该接入 点下行数据传输模式为传输模式 9的 8端口 CSI-RS配置,则该单 PMI即为: 宽带 PMI— II和宽带 PMI— 12; 如果该接入点下行数据传输模式为非周期反 馈模式 3-1对应的其他传输模式, 则该单 PMI即为: 1个宽带 PMI。
以上非周期反馈模式中对子带的带宽大小的可选定义如表 2所示, 其 中,子带的宽带大小是指每个子带包含的资源块(Resource Block,简称 RB ) 的数量, 宽带的带宽大小是指系统带宽包含的资源块的总数量。
表 2
Figure imgf000016_0001
以上对次子带的带宽大小的可选定义、 以及次子带与子带之间的可选 对应关系如表 3所示。
表 3
Figure imgf000016_0002
终端可根据所述参考接入点和 /或非参考接入点各自非周期反馈模式, 确定所述第一频域粒度。
可选的, 需要反馈的所述信道调整信息的第一频域粒度, 与参考接入 点或非参考接入点非周期反馈模式确定的反馈非参考接入点信道空间状态 信息的第三频域粒度相同。 或者, 可选的, 需要反馈的所述信道调整信息的第一频域粒度, 与参 考接入点或非参考接入点非周期反馈模式确定的反馈非参考接入点信道空 间状态信息的第三频域粒度相似; 具体可包括:
如果所述参考接入点和 /或所述非参考接入点各自非周期反馈模式为: 非周期反馈模式 1-2, 则确定所述第一频域粒度具体为: 所述预定义的子带 或所述预定义的次子带;其中:所述预定义的子带可为 3GPP LTE Release 10 现有协议规定的子带, 如表 2所示; 所述预定义的次子带的带宽大于 0, 且 小于或等于所述预定义的子带的带宽, 可如表 3 所示。 在实际应用中, 基 站可通过信令通知 UE 采用所述预定义的子带还是采用所述预定义的次子 带。 使用次子带的好处在于可以提高信道调整信息的频域精度。
或者, 如果所述参考接入点和 /或所述非参考接入点各自非周期反馈模 式为: 非周期反馈模式 2-2, 则确定所述第一频域粒度具体为: UE选择的 需要进行反馈的子带。 其中 UE 可以是选择参考接入点需要进行反馈的子 带, 或非参考接入点需要进行反馈的子带。
或者, 如果所述参考接入点的非周期反馈模式为非周期反馈模式 1-2、 且所述非参考接入点的非周期反馈模式为非周期反馈模式 2-2, 则确定所述 第一频域粒度具体为: 所述预定义的次子带。
或者, 如果所述参考接入点和 /或所述非参考接入点各自非周期反馈模 式为: 非周期反馈模式 3-1 , 则确定所述第一频域粒度具体为: 所述预定义 的宽带;所述预定义的宽带可为 3GPP LTE Release 10现有协议规定的宽带, 如表 2所示。
( 4 )可选的, UE 可根据非参考接入点的周期反馈模式, 确定所述第 一频域粒度。
3GPP LTE Release 10协议确定的周期反馈模式对应的 PMI反馈类型和 CQI反馈类型的示例, 如表 4所示, 其中周期反馈模式对子带的带宽大小 的可选定义可参见上述表 2所示。 表 4
Figure imgf000018_0001
表 4仅记录了周期反馈模式对应的 PMI反馈类型和 CQI反馈类型的部 分参数。 上述表 4中, 可用于反馈 PMI的周期反馈模式有: 周期反馈模式 1-1和周期反馈模式 2-1。
如果某接入点被配置的反馈模式为周期反馈模式 1-1 , 需要反馈的单接 入点的信道状态信息包括: 宽带 CQI和单 PMI; 其中, 如果该接入点的下 行数据传输模式为传输模式 9的 8端口 CSI-RS配置,则该单 PMI即为: 宽 带 PMI-I1和宽带的 PMI-I2;如果该小区被配置的下行数据传输模式为周期 反馈模式 1 - 1对应的其他传输模式, 该单 PMI即为: 宽带 PMI。
如果某接入点被配置的下行数据反馈模式为: 周期反馈模式 2-1 , 需要 反馈的单接入点信道状态信息包括: UE 选择需要进行反馈的子带的 CQI 和相应的子带 PMI, 或, 宽带 CQI和宽带 PMI, 其中 UE选择子带即为: UE在 J ( J≥l )个带宽部分( Bandwidth Part, 简称 BP )中选择的 1个子带; 特别的, 如果该接入点的下行数据传输模式为传输模式 9的 8端口 CSI-RS 配置, 则子带 PMI即为: 1个子带 PMI— II、 1个子带 PMI— 12, 宽带 PMI即 为: 宽带 PMI— 11和宽带 PMI— 12。
可选的,在 UE的非参考接入点的反馈模式为周期反馈模式时, 需要反 馈的所述信道调整信息的第一频域粒度, 与非参考接入点的周期反馈模式 确定的反馈非参考接入点信道状态信息的第二频域粒度相同; 具体的, 所 述第二频域粒度即为: 非参考接入点的周期反馈模式确定的、 反馈非参考 接入点 PMI和 /或非参考接入点 CQI的频域粒度。
需要说明的是, 由于不同时刻的第二频域粒度可能不同, 所以不同时 刻的第一频域粒度也有可能不同, 此时第二频域粒度即为: 非参考接入点 的下行周期反馈模式确定的、 在当前反馈时刻反馈非参考接入点 PMI 和 / 或非参考接入点 CQI的频域粒度。
本实施例在 UE根据所述参考接入点和 /或 参考接入点各自反馈模式, 确定需要反馈的所述信道调整信息的第一频域粒度, 因此, 有利于复用现 有的反馈模式, 减少对现有系统的改动, 提高系统的兼容性。
步骤 44: UE向基站发送所述第一频域粒度对应的所述信道调整信息, 以及, 基站接收 UE发送的所述信道调整信息。
( 1 )可选的, UE 可在基站配置的用于反馈所述信道调整信息所需的 资源上, 向基站发送所述第一频域粒度对应的所述信道调整信息; 基站在 相应资源上接收所述信道调整信息。
具体的 , 基站可通过动态信令为所述信道调整信息专门配置反馈资源、 并触发信道调整信息的反馈, UE在专门配置的反馈资源上, 向基站发送步 骤 43确定的第一频域粒度对应的所述信道调整信息。
( 2 )可选的, UE 可在基站配置的用于非周期反馈的资源上, 向基站 发送步骤 43确定的第一频域粒度对应的所述信道调整信息; 基站在相应资 源上接收所述信道调整信息。
可选的, 如果 UE在上述步骤 42确定的反馈内容不包括非参考接入点 信道状态信息, 如不包括非参考接入点 PMI和非参考接入点 CQI, 则 UE 可在基站配置的用于非周期反馈非参考接入点 PMI和 /或非参考接入点 CQI 的全部或部分资源上, 向基站发送所述信道调整信息。
可选的, 如果 UE在上述步骤 42确定的反馈内容包括非参考接入点 PMI, 则 UE可在基站配置的、用于非周期反馈非参考接入点 CQI的全部或 部分资源上, 向基站发送所述信道调整信息。 可选的, 如果 UE在上述步骤 42确定的反馈内容包括非参考接入点 CQI,则 UE可在基站配置的、用于非周期反馈非参考接入点 PMI的全部或 部分资源上, 向基站发送所述信道调整信息。
( 3 )可选的, UE可在基站配置的用于周期反馈的全部或部分资源上, 向基站发送步骤 43确定的第一频域粒度对应的所述信道调整信息; 基站在 相应资源上接收所述信道调整信息。
可选的, 如果 UE在上述步骤 42确定的反馈内容不包括非参考接入点 信道状态信息, 如不包括非参考接入点 PMI和非参考接入点 CQI, 则 UE 可在基站配置的、 用于周期反馈非参考接入点 PMI和 /或非参考接入点 CQI 的全部或部分资源上, 向基站发送所述信道调整信息。 该情形下, 需要反 馈的所述信道调整信息的第一频域粒度, 与的反馈非参考接入点 PMI 和 / 或协作小区 CQI的第二频域粒度相同, 例如: 在用于反馈子带非参考接入 点 PMI和 /或子带非参考接入点 CQI的资源上,反馈子带所述信道调整信息; 在用于反馈宽带非参考接入点 PMI和 /或子带非参考接入点 CQI的资源上, 反馈宽带所述信道调整信息; 以此类推。
可选的, 如果 UE在上述步骤 42确定的反馈内容包括非参考接入点 PMI, 则 UE可在基站配置的、用于周期反馈非参考接入点 CQI的全部或部 分资源上, 向基站发送所述信道调整信息。 该情形下, 需要反馈的所述信 道调整信息的第一频域粒度,可与非参考接入点 CQI的第二频域粒度相同。
可选的, 如果 UE在上述步骤 42确定的反馈内容包括非参考接入点 CQI,则 UE可在基站配置的、用于周期反馈非参考接入点 PMI的全部或部 分资源上, 向基站发送所述信道调整信息。 该情形下, 需要反馈的所述信 道调整信息的第一频域粒度, 可与反馈非参考接入点 PMI的第二频域粒度 相同。
下面首先以上述步骤 42 确定的反馈内容还包括所述非参考接入点的 PMI 为例, 对周期反馈模式下, 所述信道调整信息的反馈资源复用进行详 细说明。 UE向基站反馈非参考接入点的 PMI, 基站可将该非参考接入点的 PMI作为非参考接入点的 CSI。
如果非参考接入点的周期反馈模式为 1-1 : 用于周期反馈非参考接入点 信道空间状态信息的资源上, 原需要反馈的非参考接入点空间状态信息的 具体内容包括: 宽带 PMI (或宽带 PMI— II和宽带 PMI— 12 )和宽带 CQI; 则: UE 可在原用于反馈非参考接入点宽带 PMI (或宽带 PMI— II 和宽带 PMIJ2 ) 的资源上, 反馈非参考接入点宽带 PMI (或宽带 PMI— II 和宽带 PMIJ2 ) ; 在原用于反馈非参考接入点宽带 CQI的资源上, 反馈所述信道 调整信息。
如果非参考接入点的周期反馈模式为 1-1 , 用于周期反馈非参考接入点 信道空间状态信息的资源, 为传输模式 9子模式 1的 8端口 CSI-RS配置对 应的周期反馈模式 1-1所确定的资源,该资源上原需要周期反馈的非参考接 入点空间状态信息的具体内容包括: 宽带 PMI— II、 宽带的 PMI— 12和宽带 CQI; 则: UE可在原用于反馈非参考接入点宽带 PMI— II 的资源上, 反馈 非参考接入点宽带 PMI; 在原用于反馈非参考接入点宽带 PMI— 12和 /或非 参考接入点宽带 CQI的资源上, 反馈所述信道调整信息。
如果非参考接入点的周期反馈模式为 2-1 : 用于反馈非参考接入点的信 道空间状态信息的资源, 为传输模式 9子模式 1的 8端口 CSI-RS配置对应 的周期反馈模式 2-1所确定的资源,该资源上原需要反馈的非参考接入点空 间状态信息的具体内容包括:宽带 PMI— II、宽带 PMI— 12、以及 UE在 J( J>1 ) 个带宽部分中选择的 1 个子带的 PMI-I2; UE选择需要进行反馈的子带的 CQI、上述 UE在 J个带宽部分中选择的 1个子带并反馈该子带的 CQI和宽 带 CQI。 则, UE可在原用于反馈非参考接入点的宽带 PMI— II的资源上, 反馈非参考接入点的宽带 PMI; 在原用于反馈非参考接入点的 PMI— 12和 / 或 CQI的资源上, 反馈所述信道调整信息, 其中: 在用于反馈非参考接入 点的子带 PMI— 12和 /或非参考接入点的子带 CQI的资源上, 反馈子带所述 信道调整信息;在用于反馈非参考接入点的宽带 PMI— 12和 /或非参考接入点 的宽带 CQI的资源上, 反馈宽带所述信道调整信息。
如果非参考接入点的周期反馈模式为 2-1 : 用于周期反馈非参考接入点 的信道空间状态信息的资源上, 原需要反馈的非参考接入点空间状态信息 的具体内容包括: 宽带 PMI (或宽带 PMI— II 和宽带 PMI— 12 ) 、 以及 UE 在 J ( J≥l ) 个带宽部分中选择的 1个子带的 PMI (或子带 PMI— 12 ) ; UE 选择需要进行反馈的子带的 CQI、上述 UE在 J个带宽部分中选择的 1个子 带并反馈该子带的 CQI和宽带 CQI。 则, UE可在原用于反馈非参考接入点 宽带 PMI (或宽带 PMI— II和宽带 PMI— 12 ) 的资源上, 反馈非参考接入点 的宽带 PMI (或宽带 PMI— II和宽带 PMI— 12 ) ; 在原用于反馈非参考接入 点的子带 PMI (或子带 PMI— 12 ) 的资源上, 反馈非参考接入点的子带 PMI (或子带 PMI— 12 ) ; 在原用于反馈非参考接入点的 CQI的资源上, 反馈所 述信道调整信息,其中:在用于反馈非参考接入点的子带 PMI— 12和 /或非参 考接入点的子带 CQI的资源上, 反馈子带所述信道调整信息; 在用于反馈 非参考接入点的宽带 PMI— 12和 /或非参考接入点的宽带 CQI的资源上, 反 馈宽带所述信道调整信息。
接着, 以上述步骤 42 确定的反馈内容还包括所述非参考接入点 CQI 为例, 对周期反馈模式下, 所述信道调整信息的反馈资源复用进行详细说 明。 UE向基站反馈非参考接入点的 CQI, 基站可将该非参考接入点的 CQI 作为非参考接入点的 CSI。
如果非参考接入点的周期反馈模式为周期反馈模式 1—1或 2-1 , 在反馈 非参考接入点的 CQI的同时还反馈所述信道调整信息; 其中, 在反馈非参 考接入点的子带 CQI的同时还反馈子带所述信道调整信息, 在反馈非参考 接入点的宽带 CQI的同时还反馈宽带所述信道调整信息, 从而实现复用用 于反馈非参考接入点的 CQI的时序资源。 需要说明的是, 用于反馈的资源 可以是用于承载所述信道状态信息的上行数据比特, 承载这些比特的信道 可以是: 物理上行共享信道 ( Physical uplink shared channel, 简称 PUSCH )、 物理上行控制信道(Physical uplink control channel , 简称 PUCCH )格式 2 ( format 2 )或 PUCCH格式 3 ( format 3 ) 。 其中 PUCCH格式 3可承载
22个比特, 因此有利于在周期反馈中承载更多或更准确的信道调整信息。
本实施例实现了所述信道调整信息的反馈。 此外, 在多小区周期反馈 模式的应用场景中, 基站需要为每个小区配置反馈时序, 且基于周期反馈 模式反馈所占用的比特数较少,如仅为 l lbits,因此周期反馈资源非常宝贵; 本实施例 UE可复用基站配置的用于周期反馈的全部或部分资源,来反馈所 述信道调整信息, 因而降低了反馈开销。 或者, 本实施例 UE也可复用基站 配置的用于非周期反馈的全部或部分资源, 发送所述信道调整信息, 以降 低反馈开销。
需要说明的是本实施例中, 如果信道调整信息只复用部分反馈资源, 那么剩余的反馈资源可以被丟弃, 此时可以提高基站接收反馈信令的准确 度; 或者, 剩余的反馈资源可以承载其它信息, 例如多接入点联合 CQI、 下行数据确认信息、 接入点选择信息等, 此时可提高反馈资源的利用效率。
图 5为本发明实施例四提供的终端的结构示意图。 如图 5所示, 本实 施例提供的终端包括: 反馈确定模块 51和反馈模块 52。
反馈确定模块 51可用于确定需要反馈接入点间信道信息。
反馈模块 52可用于根据反馈确定模块 51的确定结果, 在基站配置的 资源上, 向所述基站发送反馈内容; 所述反馈内容至少包括: 参考接入点 与非参考接入点之间的信道调整信息; 所述基站配置的资源包括: 所述基 站配置的、 用于反馈所述信道调整信息的专用资源; 或者, 所述基站配置 的、 用于周期反馈的全部或部分资源; 或者, 所述基站配置的、 用于非周 期反馈的全部或部分资源。
上述技术方案中, 终端可采用不同的方式, 确定是否需要向基站反馈 接入点间信道信息。 例如: 可选的, 反馈确定模块 51可具体用于通过接收 到的、 所述基站发送的多接入点反馈配置信令, 确定需要反馈接入点间信 道信息。 或者, 反馈确定模块 51可具体用于在终端当前下行数据的传输模 式为 CoMP模式或 CoMP联合传输模式时, 确定需要反馈接入点间信道信 息。
为了确定所述信道调整信息的反馈精度, 可选的, 所述终端还可包括: 粒度确定模块 53。粒度确定模块 53可用于确定需要反馈的所述信道调整信 息的第一频域粒度。相应的,反馈模块 52具体可用于根据反馈确定模块 51 的确定结果, 在基站配置的资源上, 向所述基站发送, 与所述粒度确定模 块 53确定的所述第一频域粒度对应的所述信道调整信息。
所述第一频域粒度可包括: 预定义的子带; 或者, 预定义的次子带, 所述预定义的次子带的带宽小于或等于所述预定义的子带; 或者, 终端选 择的需要进行所述信道调整信息反馈的子带, 包括: 所述终端在所述参考 接入点选择的、 需要进行所述信道调整信息反馈的子带, 或所述终端在所 述非参考接入点选择的、 需要进行所述信道调整信息反馈的子带, 或所述 终端在所述参考接入点和所述非参考接入点联合选择的、 需要进行所述信 道调整信息反馈的子带; 或者, 预定义的宽带; 或者, 所述基站指示的需 要进行所述信道调整信息反馈的子带。
可选的, 终端可根据基站的指示, 确定所述信道调整信息的反馈精度。 该情形下, 所述终端还可包括: 粒度指示获取模块 54。 粒度指示获取模块 54可用于根据接收到的所述基站发送的信令, 获取所述基站指示的需要进 行所述信道调整信息反馈的子带。 相应的, 粒度确定模块 53具体可用于确 定所述粒度指示获取模块 54获取的、 所述基站指示的需要进行所述信道调 整信息反馈的子带, 为所述第一频域粒度。
粒度指示获取模块 54可进一步包括: 子带组获取单元 541和粒度指示 获取单元 542。
其中, 子带组获取单元 541 可用于根据接收到的所述基站发送的高层 信令, 获取所述高层信令指示的一个或多个子带组; 所述粒度指示获取单 元 542颗用于在所述子带组获取单元 541获取的所述一个或多个子带组中, 根据预设规则, 确定所述基站指示的需要进行所述信道调整信息反馈的子 带组 , 并在确定的子带组中确定所述基站指示的需要进行所述信道调整信 息反馈的子带。 或者, 所述子带组获取单元 541 可用于根据接收到的所述 基站发送的高层信令, 获取所述高层信令指示的多个子带组; 所述粒度指 示获取单元 542可用于在所述子带组获取单元 541获取的所述多个子带组 中, 确定所述基站指示的需要进行所述信道调整信息反馈的子带组, 并在 确定的子带组中确定所述基站指示的需要进行所述信道调整信息反馈的子 带。
可选的, 终端可根据反馈模式, 确定所述信道调整信息的反馈精度。 该情形下,所述粒度确定模块 53具体可用于根据所述参考接入点和 /或所述 非参考接入点各自的反馈模式, 确定所述第一频域粒度。
可选的, 所述第一频域粒度, 可与周期反馈模式或非周期反馈模式对 应的频域粒度相同。 对应周期反馈模式而言, 所述粒度确定模块 53具体可 用于确定所述参考接入点和 /或所述非参考接入点各自的周期反馈模式的第 二频域粒度, 为所述第一频域粒度。 对应非周期反馈模式而言, 所述粒度 确定模块 53 具体可用于确定所述参考接入点和 /或所述非参考接入点各自 的非周期反馈模式的第三频域粒度, 为所述第二频域粒度。
可选的, 所述第一频域粒度, 可与非周期反馈模式对应的频域粒度相 似。 例如: 对应非周期反馈模式而言, 所述粒度确定模块 53具体可用于如 果所述参考接入点和 /或所述非参考接入点各自的非周期反馈模式为: 非周 期反馈模式 1-2, 则确定所述第一频域粒度为: 所述预定义的子带或所述预 定义的次子带。 或者, 所述粒度确定模块 53具体可用于如果所述参考接入 点和 /或所述非参考接入点各自的非周期反馈模式为: 非周期反馈模式 2-2 , 则确定所述第一频域粒度为: 所述终端选择的需要进行反馈的子带。 或者, 所述粒度确定模块 53具体可用于如果所述参考接入点的非周期反馈模式为 非周期反馈模式 1-2、且所述非参考接入点的非周期反馈模式为非周期反馈 模式 2-2, 则确定所述第一频域粒度为: 所述预定义的次子带。 或者, 所述 粒度确定模块 53 具体可用于如果所述参考接入点和 /或所述非参考接入点 各自的非周期反馈模式为: 非周期反馈模式 3-1 , 则确定所述第一频域粒度 为: 所述预定义的宽带。
可选的, 从发送所述信道调整信息的不同资源角度, 所述反馈模块 52 可包括以下之一单元: 专用资源发送单元 521、 非周期反馈资源发送单元 522、 周期反馈资源发送单元 523。 专用资源发送单元 521可用于根据所述 反馈确定模块 51的确定结果, 在所述基站配置的、 用于反馈所述信道调整 信息的专用资源上, 向所述基站发送所述信道调整信息。 非周期反馈资源 发送单元 522可用于根据所述反馈确定模块 51的确定结果, 在所述基站配 置的、 用于非周期反馈的全部或部分资源上, 向所述基站发送所述信道调 整信息。 周期反馈资源发送单元 523可用于根据所述反馈确定模块 51的确 定结果, 在所述基站配置的、 用于周期反馈的全部或部分资源上, 向所述 基站发送所述信道调整信息。
如果终端复用基站配置的、 用于非周期反馈的全部或部分资源, 来发 送所述信道调整信息, 则可选的: 非周期反馈资源发送单元 522具体可用 于如果所述反馈内容不包括非参考接入点信道状态信息, 则于根据所述反 馈确定模块的确定结果, 在所述基站配置的、 用于非周期反馈非参考接入 点信道状态信息的全部或部分资源上, 向所述基站发送所述信道调整信息, 所述信道状态信息包括信道空间状态信息和信道质量信息; 或者, 非周期 反馈资源发送单元 522具体可用于如果所述反馈内容包括非参考接入点信 道空间状态信息, 则根据所述反馈确定模块的确定结果, 在所述基站配置 的、 用于非周期反馈非参考接入点信道质量信息的全部或部分资源上, 向 所述基站发送所述信道调整信息; 或者, 非周期反馈资源发送单元 522具 体可用于如果所述反馈内容包括非参考接入点信道空间状态信息, 则根据 所述反馈确定模块的确定结果, 在所述基站配置的、 用于非周期反馈非参 考接入点信道空间状态信息的全部或部分资源上, 向所述基站发送所述信 道调整信息。
如果终端复用基站配置的、 用于周期反馈的全部或部分资源, 来发送 所述信道调整信息, 则可选的: 周期反馈资源发送单元 523 具体可用于如 果所述反馈内容不包括非参考接入点信道状态信息, 则根据所述反馈确定 模块的确定结果, 在所述基站配置的、 用于周期反馈非参考接入点信道状 态信息的全部或部分资源上, 向所述基站发送所述信道调整信息, 所述信 道状态信息包括信道空间状态信息和信道质量信息; 或者, 周期反馈资源 发送单元 523 具体可用于如果所述反馈内容包括非参考接入点信道空间状 态信息, 则根据所述反馈确定模块的确定结果, 在所述基站配置的、 用于 周期反馈非参考接入点信道质量信息的全部或部分资源上, 向所述基站发 送所述信道调整信息; 或者, 周期反馈资源发送单元 523 具体可用于如果 所述反馈内容包括非参考接入点信道质量信息, 则根据所述反馈确定模块 的确定结果, 在所述基站配置的、 用于周期反馈非参考接入点信道空间状 态信息的全部或部分资源上 , 向所述基站发送所述信道调整信息。
进一步的, 所述终端还可包括: 量化处理模块 55。 量化处理模块 55可 用于在所述反馈模块发送所述信道调整信息之前, 对所述信道调整信息进 行量化处理; 其中, 所述量化处理模块对所述信道调整信息进行量化处理 所基于的码本, 预先确定或由所述基站指定, 所述码本包括以下一个或多 个星座图: 1 比特的 BPSK的星座图, 2比特的 QPSK星座图, 3比特的 8PSK的星座图, 4比特的 16QAM的星座图。 相应的, 所述反馈模块 52具 体可用于根据所述反馈确定模块 51的确定结果,在所述基站配置的资源上, 向所述基站发送经量化处理后的所述信道调整信息。
本实施例提供的终端可在确定需要反馈小区间信道信息时, 向基站反 馈参考接入点和非参考接入点之间的信道调整信息, 从而为接入点间信道 信息的反馈提供了解决方案。 本实施例中终端的工作机理, 可参见上述方 法实施例中关于终端或 UE的记载, 在此不再贅述。
图 6为本发明实施例五提供的基站的结构示意图。 如图 6所示, 本实 施例提供的基站包括: 反馈信令发送模块 61和反馈内容接收模块 62。
反馈信令发送模块 61可用于向终端发送多接入点反馈配置信令。
反馈内容接收模块 62可用于在已配置的资源上, 接收所述终端根据所 述反馈指令发送模块中的所述多接入点反馈配置信令而发送的反馈内容, 所述反馈内容至少包括: 参考接入点与非参考接入点之间的信道调整信息; 所述已配置的资源包括: 已配置的、 用于反馈所述信道调整信息的专用资 源; 或者, 已配置的、 用于周期反馈的全部或部分资源; 或者, 已配置的、 用于非周期反馈的全部或部分资源。
可选的, 基站可指示终端需要进行所述信道调整信息反馈的子带。 该 情形下, 基站还可包括: 反馈子带指示模块 63。 反馈子带指示模块 63可用 于在所述反馈指令发送模块发送所述多接入点反馈配置信令之后, 向所述 终端发送、 用于指示需要进行所述信道调整信息反馈的子带的信令。
基站可采用不同的方式指示终端, 需要进行所述信道调整信息反馈的 子带。 例如可选的: 所述反馈子带指示模块 63具体可用于在所述反馈指令 发送模块发送所述多接入点反馈配置信令之后, 向所述终端发送高层信令, 用于指示一个或多个子带组, 以供所述终端根据预设规则, 在所述一个或 多个子带组中确定需要进行所述信道调整信息反馈的子带组, 并在确定的 子带组中确定所述基站指示的需要进行所述信道调整信息反馈的子带; 或 者, 所述反馈子带指示模块 63具体可用于在所述反馈指令发送模块发送所 述多接入点反馈配置信令之后, 向所述终端发送高层信令, 用于指示多个 子带组; 以及向所述终端发送动态信令, 用于指示在所述多个子带中需要 进行所述信道调整信息反馈的子带组, 并在确定的子带组中确定所述基站 指示的需要进行所述信道调整信息反馈的子带。
可选的, 所述基站还可包括: 反量化处理模块 64。 反量化处理模块 64 可用于基于预先确定码本, 对所述反馈内容接收模块接收到的所述信道调 整信息, 进行反量化处理; 所述码本包括以下一个或多个星座图: 1 比特 的 BPSK的星座图, 2比特的 QPSK星座图, 3比特的 8PSK的星座图, 4 比特的 16QAM的星座图。
本实施例提供的基站可通过信令触发终端反馈参考接入点和非参考接 入点之间的信道调整信息, 从而为接入点间信道信息的反馈提供了解决方 案。 本实施例中基站的工作机理, 可参见上述方法实施例中关于基站、 基 站或 eNB的记载, 在此不再赞述。
图 7为本发明实施例六提供的通信系统的结构示意图。 如图 7所示, 本实施例提供的通信系统包括: 终端 71和基站 72; 其中终端 71的具体结 构可参见图 5对应实施例的记载, 基站 72的具体结构可参见图 6对应实施 例的记载, 在此不再贅述。
本实施例提供的通信系统中, 终端可在确定需要反馈小区间信道信息 时, 向基站反馈参考接入点和非参考接入点之间的信道调整信息, 从而为 接入点间信道信息的反馈提供了解决方案。
本领域普通技术人员可以理解: 附图只是一个实施例的示意图, 附图 中的模块或流程并不一定是实施本发明所必须的。
本领域普通技术人员可以理解: 实施例中的装置中的模块可以按照实 施例描述分布于实施例的装置中, 也可以进行相应变化位于不同于本实施 例的一个或多个装置中。 上述实施例的模块可以合并为一个模块, 也可以 进一步拆分成多个子模块。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解: 其依然可以对前述各实施例所记载的技术方案进行修 改, 或者对其中部分技术特征进行等同替换; 而这些修改或者替换, 并不 使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims

权利要求
1、 一种信道信息的反馈方法, 其特征在于, 包括:
确定需要反馈接入点间信道信息;
在基站配置的资源上, 向所述基站发送反馈内容;
其中, 所述反馈内容至少包括: 参考接入点与非参考接入点之间的信 道调整信息; 所述基站配置的资源包括: 所述基站配置的、 用于反馈所述 信道调整信息的专用资源; 或者, 所述基站配置的、 用于周期反馈的全部 或部分资源; 或者, 所述基站配置的、 用于非周期反馈的全部或部分资源。
2、 根据权利要求 1所述的方法, 其特征在于, 所述确定需要反馈接入 点间信道信息包括: 通过接收到的、 所述基站发送的多接入点反馈配置信 令, 确定需要反馈接入点间信道信息。
3、 根据权利要求 2所述的方法, 其特征在于, 所述多接入点反馈配置 信令包括: 用于指示是否需要反馈所述接入点间信道信息的高层信令或动 态信令。
4、 根据权利要求 1所述的方法, 其特征在于, 所述确定需要反馈接入 点间信道信息包括: 在当前下行数据的传输模式为 CoMP模式或 CoMP联 合传输模式时, 确定需要反馈接入点间信道信息。
5、 根据权利要求 1-4任一所述的方法, 其特征在于,
向所述基站发送反馈内容之前, 所述方法还包括: 确定需要反馈的所 述信道调整信息的第一频域粒度;
其中, 所述信道调整信息具体为: 所述第一频域粒度对应的信道调整 信息。
6、根据权利要求 5所述的方法,其特征在于, 所述第一频域粒度包括: 预定义的子带; 或者,
预定义的次子带, 所述预定义的次子带的带宽小于或等于所述预定义 的子带; 或者, 终端选择的需要进行所述信道调整信息反馈的子带, 包括: 所述终端 在所述参考接入点选择的、 需要进行所述信道调整信息反馈的子带, 或所 述终端在所述非参考接入点选择的、 需要进行所述信道调整信息反馈的子 带, 或所述终端在所述参考接入点和所述非参考接入点联合选择的、 需要 进行所述信道调整信息反馈的子带; 或者,
预定义的宽带; 或者,
所述基站指示的需要进行所述信道调整信息反馈的子带。
7、 根据权利要求 5所述的方法, 其特征在于, 所述确定需要反馈的所 述信道调整信息的第一频域粒度之前, 所述方法还包括: 根据接收到的所 述基站发送的信令 , 获取所述基站指示的需要进行所述信道调整信息反馈 的子带;
所述确定需要反馈的所述信道调整信息的第一频域粒度, 包括: 确定 所述基站指示的需要进行所述信道调整信息反馈的子带, 为所述第一频域 粒度。
8、 根据权利要求 7所述的方法, 其特征在于, 根据接收到的所述基站 发送的信令, 获取所述基站指示的需要进行所述信道调整信息反馈的子带, 包括:
根据接收到的所述基站发送的高层信令, 获取所述高层信令指示的一 个或多个子带组; 在所述一个或多个子带组中根据预设规则, 确定所述基 站指示的需要进行所述信道调整信息反馈的子带组, 并在确定的子带组中 确定所述基站指示的需要进行所述信道调整信息反馈的子带; 或者
根据接收到的所述基站发送的高层信令, 获取所述高层信令指示的多 个子带组; 根据接收到的所述基站发送的动态信令, 在所述多个子带组中 确定所述基站指示的需要进行所述信道调整信息反馈的子带组, 并在确定 的子带组中确定所述基站指示的需要进行所述信道调整信息反馈的子带。
9、 根据权利要求 6所述的方法, 其特征在于, 确定所述第一频域粒度 包括: 根据所述参考接入点和 /或所述非参考接入点各自的反馈模式, 确定 所述第一频域粒度。
10、 根据权利要求 9所述的方法, 其特征在于, 根据所述参考接入点 和 /或所述非参考接入点各自的反馈模式, 确定所述第一频域粒度, 包括: 确定所述参考接入点和 /或所述非参考接入点各自的周期反馈模式的第 二频域粒度, 为所述第一频域粒度; 或者,
确定所述参考接入点和 /或所述非参考接入点各自的非周期反馈模式的 第三频域粒度, 为所述第二频域粒度。
11、 根据权利要求 9所述的方法, 其特征在于, 根据所述参考接入点 和 /或所述非参考接入点各自的反馈模式, 确定所述第一频域粒度, 包括: 如果所述参考接入点和 /或所述非参考接入点各自的非周期反馈模式 为: 非周期反馈模式 1-2, 则确定所述第一频域粒度为: 所述预定义的子带 或所述预定义的次子带; 或者,
如果所述参考接入点和 /或所述非参考接入点各自的非周期反馈模式 为: 非周期反馈模式 2-2, 则确定所述第一频域粒度为: 所述终端选择的需 要进行反馈的子带; 或者,
如果所述参考接入点的非周期反馈模式为非周期反馈模式 1-2、且所述 非参考接入点的非周期反馈模式为非周期反馈模式 2-2, 则确定所述第一频 域粒度为: 所述预定义的次子带; 或者,
如果所述参考接入点和 /或所述非参考接入点各自的非周期反馈模式 为: 非周期反馈模式 3-1 ,则确定所述第一频域粒度为: 所述预定义的宽带。
12、根据权利要求 1-4任一所述的方法, 其特征在于, 在所述基站配置 的、 用于非周期反馈的全部或部分资源上, 向所述基站发送所述信道调整 信息, 包括:
如果所述反馈内容不包括非参考接入点信道状态信息, 则在所述基站 配置的、 用于非周期反馈非参考接入点信道状态信息的全部或部分资源上, 向所述基站发送所述信道调整信息 , 所述信道状态信息包括信道空间状态 信息和信道质量信息; 或者,
如果所述反馈内容包括非参考接入点信道空间状态信息, 则在所述基 站配置的、 用于非周期反馈非参考接入点信道质量信息的全部或部分资源 上, 向所述基站发送所述信道调整信息; 或者,
如果所述反馈内容包括非参考接入点信道空间状态信息, 则在所述基 站配置的、 用于非周期反馈非参考接入点信道空间状态信息的全部或部分 资源上, 向所述基站发送所述信道调整信息。
13、根据权利要求 1-4任一所述的方法, 其特征在于, 在所述基站配置 的、 用于周期反馈的全部或部分资源上, 向所述基站发送所述信道调整信 息, 包括:
如果所述反馈内容不包括非参考接入点信道状态信息, 则在所述基站 配置的、 用于周期反馈非参考接入点信道状态信息的全部或部分资源上, 向所述基站发送所述信道调整信息 , 所述信道状态信息包括信道空间状态 信息和信道质量信息; 或者,
如果所述反馈内容包括非参考接入点信道空间状态信息, 则在所述基 站配置的、 用于周期反馈非参考接入点信道质量信息的全部或部分资源上, 向所述基站发送所述信道调整信息; 或者,
如果所述反馈内容包括非参考接入点信道质量信息, 则在所述基站配 置的、 用于周期反馈非参考接入点信道空间状态信息的全部或部分资源上, 向所述基站发送所述信道调整信息。
14、根据权利要求 1-4任一所述的方法, 其特征在于, 所述参考接入点 为服务接入点, 或者, 所述参考接入点为所述基站指定的小区或节点。
15、 根据权利要求 1-4任一所述的方法, 其特征在于,
向所述基站发送所述信道调整信息之前, 所述方法还包括: 对所述信 道调整信息进行量化处理; 向所述基站发送所述信道调整信息, 包括: 向所述基站发送经量化处 理后的所述信道调整信息;
其中, 对所述信道调整信息进行量化处理所基于的码本, 预先确定或 由所述基站指定, 所述码本包括以下一个或多个星座图: 1 比特的 BPSK 的星座图, 2比特的 QPSK星座图,3比特的 8PSK的星座图, 4比特的 16QAM 的星座图。
16、 一种信道信息的反馈方法, 其特征在于, 包括:
向终端发送多接入点反馈配置信令;
在已配置的资源上, 接收所述终端根据所述多接入点反馈配置信令发 送的反馈内容, 所述反馈内容至少包括: 参考接入点与非参考接入点之间 的信道调整信息; 所述已配置的资源包括: 已配置的、 用于反馈所述信道 调整信息的专用资源; 或者, 已配置的、 用于周期反馈的全部或部分资源; 或者, 已配置的、 用于非周期反馈的全部或部分资源。
17、 根据权利要求 16所述的方法, 其特征在于, 所述接收所述终端根 据所述多接入点反馈配置信令发送的反馈内容之前, 还包括: 向所述终端 发送、 用于指示需要进行所述信道调整信息反馈的子带的信令。
18、 根据权利要求 17所述的方法, 其特征在于, 向所述终端发送、 用 于指示需要进行所述信道调整信息反馈的子带的信令, 包括:
向所述终端发送高层信令, 用于指示一个或多个子带组, 以供所述终 端根据预设规则, 在所述一个或多个子带组中确定需要进行所述信道调整 信息反馈的子带组, 并在确定的子带组中确定所述基站指示的需要进行所 述信道调整信息反馈的子带; 或者
向所述终端发送高层信令, 用于指示多个子带; 向所述终端发送动态 信令, 用于指示在所述多个子带中需要进行所述信道调整信息反馈的子带 组, 并在确定的子带组中确定所述基站指示的需要进行所述信道调整信息 反馈的子带。
19、根据权利要求 16-18任一所述的方法, 其特征在于, 接收所述终端 发送的所述信道调整信息之后, 还包括:
基于预先确定的码本, 对所述信道调整信息进行反量化处理; 所述码本包括以下一个或多个星座图: 1 比特的 BPSK的星座图, 2 比特的 QPSK星座图 , 3比特的 8PSK的星座图 , 4比特的 16QAM的星座 图。
20、 一种终端, 其特征在于, 包括:
反馈确定模块, 用于确定需要反馈接入点间信道信息;
反馈模块, 用于根据所述反馈确定模块的确定结果, 在基站配置的资 源上, 向所述基站发送反馈内容; 其中, 所述反馈内容至少包括: 参考接 入点与非参考接入点之间的信道调整信息; 所述基站配置的资源包括: 所 述基站配置的、 用于反馈所述信道调整信息的专用资源; 或者, 所述基站 配置的、 用于周期反馈的全部或部分资源; 或者, 所述基站配置的、 用于 非周期反馈的全部或部分资源。
21、 根据权利要求 20所述的终端, 其特征在于,
所述反馈确定模块, 具体用于通过接收到的、 所述基站发送的多接入 点反馈配置信令, 确定需要反馈接入点间信道信息。
22、 根据权利要求 20所述的终端, 其特征在于,
所述反馈确定模块, 具体用于在当前下行数据的传输模式为 CoMP模 式或 CoMP联合传输模式时, 确定需要反馈接入点间信道信息。
23、 根据权利要求 20-22任一所述的终端, 其特征在于, 还包括: 粒度 确定模块;
所述粒度确定模块, 用于确定需要反馈的所述信道调整信息的第一频 域粒度;
所述反馈模块, 具体用于根据所述反馈确定模块的确定结果, 在基站 配置的资源上, 向所述基站发送, 与所述粒度确定模块确定的所述第一频 域粒度对应的所述信道调整信息。
24、 根据权利要求 23所述的终端, 其特征在于, 所述终端还包括: 粒 度指示获取模块;
所述粒度指示获取模块, 用于根据接收到的所述基站发送的信令, 获 取所述基站指示的需要进行所述信道调整信息反馈的子带;
所述粒度确定模块, 具体用于确定所述粒度指示获取模块获取的、 所 述基站指示的需要进行所述信道调整信息反馈的子带, 为所述第一频域粒 度。
25、 根据权利要求 24所述的终端, 其特征在于, 所述粒度指示获取模 块包括: 子带组获取单元和粒度指示获取单元;
所述子带组获取单元, 用于根据接收到的所述基站发送的高层信令, 获取所述高层信令指示的一个或多个子带组; 所述粒度指示获取单元, 用 于在所述子带组获取单元获取的所述一个或多个子带组中, 根据预设规则, 确定所述基站指示的需要进行所述信道调整信息反馈的子带组, 并在确定 的子带组中确定所述基站指示的需要进行所述信道调整信息反馈的子带; 或者,
所述子带组获取单元, 用于根据接收到的所述基站发送的高层信令, 获取所述高层信令指示的多个子带组; 所述粒度指示获取单元, 用于在所 述子带组获取单元获取的所述多个子带组中, 确定所述基站指示的需要进 行所述信道调整信息反馈的子带组, 并在确定的子带组中确定所述基站指 示的需要进行所述信道调整信息反馈的子带。
26、 根据权利要求 23所述的终端, 其特征在于,
所述粒度确定模块, 具体用于根据所述参考接入点和 /或所述非参考接 入点各自的反馈模式, 确定所述第一频域粒度。
27、 根据权利要求 26所述的终端, 其特征在于,
所述粒度确定模块, 具体用于确定所述参考接入点和 /或所述非参考接 入点各自的周期反馈模式的第二频域粒度, 为所述第一频域粒度; 或者,
所述粒度确定模块, 具体用于确定所述参考接入点和 /或所述非参考接 入点各自的非周期反馈模式的第三频域粒度, 为所述第二频域粒度。
28、 根据权利要求 26所述的终端, 其特征在于,
所述粒度确定模块, 具体用于如果所述参考接入点和 /或所述非参考接 入点各自的非周期反馈模式为: 非周期反馈模式 1-2, 则确定所述第一频域 粒度为: 预定义的子带或预定义的次子带; 或者,
所述粒度确定模块, 具体用于如果所述参考接入点和 /或所述非参考接 入点各自的非周期反馈模式为: 非周期反馈模式 2-2, 则确定所述第一频域 粒度为: 终端选择的需要进行反馈的子带; 或者,
所述粒度确定模块, 具体用于如果所述参考接入点的非周期反馈模式 为非周期反馈模式 1-2、且所述非参考接入点的非周期反馈模式为非周期反 馈模式 2-2, 则确定所述第一频域粒度为: 预定义的次子带; 或者,
所述粒度确定模块, 具体用于如果所述参考接入点和 /或所述非参考接 入点各自的非周期反馈模式为: 非周期反馈模式 3-1 , 则确定所述第一频域 粒度为: 预定义的宽带。
29、根据权利要求 20-22任一所述的终端, 其特征在于, 所述反馈模块 包括以下之一:
专用资源发送单元, 用于根据所述反馈确定模块的确定结果, 在所述 基站配置的、 用于反馈所述信道调整信息的专用资源上, 向所述基站发送 所述信道调整信息;
非周期反馈资源发送单元, 用于根据所述反馈确定模块的确定结果, 在所述基站配置的、 用于非周期反馈的全部或部分资源上, 向所述基站发 送所述信道调整信息;
周期反馈资源发送单元, 用于根据所述反馈确定模块的确定结果, 在 所述基站配置的、 用于周期反馈的全部或部分资源上, 向所述基站发送所 述信道调整信息。
30、 根据权利要求 29所述的终端, 其特征在于,
所述非周期反馈资源发送单元, 具体用于如果所述反馈内容不包括非 参考接入点信道状态信息, 则于根据所述反馈确定模块的确定结果, 在所 述基站配置的、 用于非周期反馈非参考接入点信道状态信息的全部或部分 资源上, 向所述基站发送所述信道调整信息, 所述信道状态信息包括信道 空间状态信息和信道质量信息;
或者,
所述非周期反馈资源发送单元, 具体用于如果所述反馈内容包括非参 考接入点信道空间状态信息, 则根据所述反馈确定模块的确定结果, 在所 述基站配置的、 用于非周期反馈非参考接入点信道质量信息的全部或部分 资源上, 向所述基站发送所述信道调整信息;
或者,
所述非周期反馈资源发送单元, 具体用于如果所述反馈内容包括非参 考接入点信道空间状态信息, 则根据所述反馈确定模块的确定结果, 在所 述基站配置的、 用于非周期反馈非参考接入点信道空间状态信息的全部或 部分资源上, 向所述基站发送所述信道调整信息。
31、 根据权利要求 29所述的终端, 其特征在于,
所述周期反馈资源发送单元, 具体用于如果所述反馈内容不包括非参 考接入点信道状态信息, 则根据所述反馈确定模块的确定结果, 在所述基 站配置的、 用于周期反馈非参考接入点信道状态信息的全部或部分资源上, 向所述基站发送所述信道调整信息 , 所述信道状态信息包括信道空间状态 信息和信道质量信息;
或者,
所述周期反馈资源发送单元, 具体用于如果所述反馈内容包括非参考 接入点信道空间状态信息, 则根据所述反馈确定模块的确定结果, 在所述 基站配置的、 用于周期反馈非参考接入点信道质量信息的全部或部分资源 上, 向所述基站发送所述信道调整信息;
或者,
所述周期反馈资源发送单元, 具体用于如果所述反馈内容包括非参考 接入点信道质量信息, 则根据所述反馈确定模块的确定结果, 在所述基站 配置的、 用于周期反馈非参考接入点信道空间状态信息的全部或部分资源 上, 向所述基站发送所述信道调整信息。
32、根据权利要求 20-22任一所述的终端, 其特征在于, 所述终端还包 括:
量化处理模块, 用于在所述反馈模块发送所述信道调整信息之前, 对 所述信道调整信息进行量化处理; 其中, 所述量化处理模块对所述信道调 整信息进行量化处理所基于的码本, 预先确定或由所述基站指定, 所述码 本包括以下一个或多个星座图: 1比特的 BPSK的星座图, 2比特的 QPSK 星座图, 3比特的 8PSK的星座图, 4比特的 16QAM的星座图;
所述反馈模块, 具体用于根据所述反馈确定模块的确定结果, 在所述 基站配置的资源上, 向所述基站发送经量化处理后的所述信道调整信息。
33、 一种基站, 其特征在于, 包括:
反馈指令发送模块, 用于向终端发送多接入点反馈配置信令; 反馈内容接收模块, 用于在已配置的资源上, 接收所述终端根据所述 反馈指令发送模块中的所述多接入点反馈配置信令而发送的反馈内容, 所 述反馈内容至少包括: 参考接入点与非参考接入点之间的信道调整信息; 所述已配置的资源包括: 已配置的、 用于反馈所述信道调整信息的专用资 源; 或者, 已配置的、 用于周期反馈的全部或部分资源; 或者, 已配置的、 用于非周期反馈的全部或部分资源。
34、 根据权利要求 33所述的基站, 其特征在于, 所述基站还包括: 反馈子带指示模块, 用于在所述反馈指令发送模块发送所述多接入点 反馈配置信令之后, 向所述终端发送、 用于指示需要进行所述信道调整信 息反馈的子带的信令。
35、 根据权利要求 34所述的基站, 其特征在于,
所述反馈子带指示模块, 具体用于在所述反馈指令发送模块发送所述 多接入点反馈配置信令之后, 向所述终端发送高层信令, 用于指示一个或 多个子带组, 以供所述终端根据预设规则, 在所述一个或多个子带组中确 定需要进行所述信道调整信息反馈的子带组, 并在确定的子带组中确定所 述基站指示的需要进行所述信道调整信息反馈的子带;
或者,
所述反馈子带指示模块, 具体用于在所述反馈指令发送模块发送所述 多接入点反馈配置信令之后, 向所述终端发送高层信令, 用于指示多个子 带; 以及向所述终端发送动态信令, 用于指示在所述多个子带中需要进行 所述信道调整信息反馈的子带组, 并在确定的子带组中确定所述基站指示 的需要进行所述信道调整信息反馈的子带。
36、根据权利要求 33-35任一所述的基站, 其特征在于, 所述基站还包 括:
反量化处理模块, 用于基于预先确定码本, 对所述反馈内容接收模块 接收到的所述信道调整信息, 进行反量化处理; 所述码本包括以下一个或 多个星座图: 1比特的 BPSK的星座图, 2比特的 QPSK星座图, 3比特的 8PSK的星座图, 4比特的 16QAM的星座图。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014111750A3 (en) * 2013-01-18 2014-12-31 Alcatel Lucent Method and device for quantizing channel state information
EP3119009A4 (en) * 2014-03-12 2017-03-15 Huawei Technologies Co., Ltd. Channel quality indicator feedback method, resource scheduling information sending method and apparatuses

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2509912B (en) * 2013-01-16 2018-08-15 Sony Corp Telecommunications Apparatus and Methods
KR20160003201A (ko) * 2013-05-10 2016-01-08 후지쯔 가부시끼가이샤 정보 피드백 방법, ue 및 기지국
WO2015100673A1 (zh) * 2013-12-31 2015-07-09 华为技术有限公司 共享无线资源的方法、基站和用户设备
CN106559182B (zh) * 2015-09-25 2020-06-16 中兴通讯股份有限公司 信道参数的配置获取方法、装置及系统
US10536209B2 (en) 2017-03-24 2020-01-14 Qualcomm Incorporated Techniques for beam discovery and beamforming in wireless communications
CN109039407A (zh) 2017-06-08 2018-12-18 索尼公司 无线通信系统中的电子设备、通信方法和存储介质
CA3066682C (en) * 2018-01-12 2022-03-01 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method and device for srs transmission
WO2020147135A1 (zh) * 2019-01-20 2020-07-23 Oppo广东移动通信有限公司 一种码本处理方法及装置、终端、网络设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101753185A (zh) * 2008-12-15 2010-06-23 大唐移动通信设备有限公司 一种实现多小区多天线校准的方法、装置和系统
CN101917381A (zh) * 2010-08-20 2010-12-15 西安电子科技大学 协作多点传输系统中小区间延迟差补偿方法
WO2011022733A2 (en) * 2009-08-21 2011-02-24 Qualcomm Incorporated Multipoint equalization framework for coordinated multipoint transmission
CN102056220A (zh) * 2009-10-28 2011-05-11 华为技术有限公司 实现信道测量的方法及装置
CN102111352A (zh) * 2009-12-23 2011-06-29 中兴通讯股份有限公司 多点协作联合发送网络中的信息反馈方法、装置和系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101753185A (zh) * 2008-12-15 2010-06-23 大唐移动通信设备有限公司 一种实现多小区多天线校准的方法、装置和系统
WO2011022733A2 (en) * 2009-08-21 2011-02-24 Qualcomm Incorporated Multipoint equalization framework for coordinated multipoint transmission
CN102056220A (zh) * 2009-10-28 2011-05-11 华为技术有限公司 实现信道测量的方法及装置
CN102111352A (zh) * 2009-12-23 2011-06-29 中兴通讯股份有限公司 多点协作联合发送网络中的信息反馈方法、装置和系统
CN101917381A (zh) * 2010-08-20 2010-12-15 西安电子科技大学 协作多点传输系统中小区间延迟差补偿方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014111750A3 (en) * 2013-01-18 2014-12-31 Alcatel Lucent Method and device for quantizing channel state information
EP3119009A4 (en) * 2014-03-12 2017-03-15 Huawei Technologies Co., Ltd. Channel quality indicator feedback method, resource scheduling information sending method and apparatuses
US10194455B2 (en) 2014-03-12 2019-01-29 Huawei Technologies Co., Ltd. Method for feeding back channel quality indicator, and method and apparatus for sending resource scheduling information

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