WO2014000208A1 - 信道状态信息上报方法及终端 - Google Patents

信道状态信息上报方法及终端 Download PDF

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Publication number
WO2014000208A1
WO2014000208A1 PCT/CN2012/077707 CN2012077707W WO2014000208A1 WO 2014000208 A1 WO2014000208 A1 WO 2014000208A1 CN 2012077707 W CN2012077707 W CN 2012077707W WO 2014000208 A1 WO2014000208 A1 WO 2014000208A1
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WO
WIPO (PCT)
Prior art keywords
csi
csis
priority information
terminal
priority
Prior art date
Application number
PCT/CN2012/077707
Other languages
English (en)
French (fr)
Inventor
夏亮
马瑞泽 大卫
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 PCT/CN2012/077707 priority Critical patent/WO2014000208A1/zh
Priority to CN201280001045.XA priority patent/CN103620996A/zh
Publication of WO2014000208A1 publication Critical patent/WO2014000208A1/zh

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Classifications

    • 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
    • H04L1/0026Transmission of channel quality indication
    • 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
    • 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
    • H04L1/0028Formatting
    • H04L1/003Adaptive formatting arrangements particular to signalling, e.g. variable amount of bits
    • 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
    • H04L1/0028Formatting
    • H04L1/0031Multiple signaling transmission

Definitions

  • the present application relates to communications technologies, and in particular, to a channel state information reporting method and a terminal. Background technique
  • CSI channel state information
  • UE User Equipment
  • eNB Evolved NodeB
  • PUCCH Physical Uplink Control Channel
  • CoMP Coordinated Multiple Points
  • CA Carrier Aggregation
  • the TP may include, but is not limited to, an access point (AP), a base station, a cell under the base station, a carrier frequency, a carrier, a remote radio equipment (RRE), and a remote radio port (Remote Radio Head, RRH), Remote Radio Unit (RRU) or Home Base Station (Femto cell, Home NodeB, HNB or Home eNodeB, HeNB).
  • AP access point
  • RRE remote radio equipment
  • RRU Remote Radio Unit
  • Home Base Station Femto cell, Home NodeB, HNB or Home eNodeB, HeNB.
  • the terminal may be unable to report the CSI for all transmission points that are commonly served by the terminal for some reason, for example, due to limited PUCCH resources, the PUCCH cannot accommodate all the transmission points for the common service for the terminal. For reasons such as CSI, how to alleviate the limitations caused by this problem becomes a problem. Summary of the invention
  • aspects of the present application provide a channel state information reporting method and a terminal, which are used to implement, when a terminal needs to report at least one CSI, appropriately mitigating a terminal for failing to report all transmission points that are commonly served by the terminal for some reason.
  • the problem with CSI is a channel state information reporting method and a terminal, which are used to implement, when a terminal needs to report at least one CSI, appropriately mitigating a terminal for failing to report all transmission points that are commonly served by the terminal for some reason.
  • An aspect of the present application provides a CSI reporting method, including:
  • the terminal determines at least two CSIs that need to be reported; When the sum of the loads of the at least two CSIs is greater than the load threshold, the terminal reports a part of the CSIs of the at least two CSIs according to the priority information of the at least two CSIs, so that the part of the CSIs The sum of the loads is less than or equal to the load threshold.
  • a terminal including:
  • a processor configured to determine at least two CSIs that need to be reported
  • a transmitter configured to report, when the sum of the loads of the at least two CSIs is greater than a load threshold, a partial CSI of the at least two CSIs according to the priority information of the at least two CSIs, so that the The sum of the loads of the partial CSI is less than or equal to the load threshold.
  • the embodiment of the present application determines, by the terminal, the at least two CSIs that need to be reported, so that when the sum of the loads of the at least two CSIs is greater than the load threshold, the terminal can be configured according to the at least two CSIs.
  • the priority information of the at least two CSIs is reported, so that the sum of the loads of the partial CSIs is less than or equal to the load threshold, and the CSI can be reported when the terminal needs to report the CSI for each transmission point. Mitigating the CSI for all transmission points that are co-serviced for the terminal cannot be reported for some reason.
  • FIG. 1 is a schematic flowchart of a channel state information reporting method according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • the technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application.
  • the embodiments are part of the embodiments of the present application, and not all of the embodiments. Based on the embodiments in the present application, those of ordinary skill in the art obtain the following without creative efforts. All other embodiments obtained are within the scope of the protection of the present application.
  • the terminal may have multiple Transmission Points (TPs) serving it at the same time.
  • the TP may include, but is not limited to, an access point (AP), a base station, a cell under the base station, a carrier frequency, a carrier, a remote radio equipment (RRE), and a remote radio port (Remote Radio Head (RRH), Remote Radio Unit (RRU) or Home Base Station (Femto cell, Home NodeB, HNB or Home eNodeB, HeNB).
  • AP access point
  • RRE remote radio equipment
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • HeNB Home Base Station
  • the terminal can measure the CSI under various hypothetical conditions and report it to the base station, so that the base station can perform the relevant TP according to the CSI for each hypothetical situation reported by the terminal.
  • a hypothetical situation is: TP1 is a signal TP for transmitting a downlink signal to the UE, and the signal TP transmits the transmission power P1 of the downlink signal, and TP2 is used for The interference TP generated by the UE or the interference TP does not send the downlink signal.
  • TP2 is a signal TP for transmitting a downlink signal to the UE, and the signal TP transmits the transmission power P2 of the downlink signal, where TP1 is The interference TP used to generate interference to the UE or the interference TP does not transmit a downlink signal.
  • the term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate: A exists separately, and A and B exist simultaneously. There are three cases of B alone.
  • the character T in this paper generally indicates that the contextual object is an "or" relationship.
  • FIG. 1 is a schematic flowchart of a channel state information reporting method according to an embodiment of the present disclosure, as shown in FIG. 1.
  • the terminal determines at least two CSIs that need to be reported.
  • the terminal When the sum of the loads of the at least two CSIs is greater than the load threshold, the terminal reports a part of the CSIs of the at least two CSIs according to the priority information of the at least two CSIs, so that the The sum of the loads of the partial CSI is less than or equal to the load threshold.
  • the at least two CSIs that need to be reported by the terminal may include the CSI measured by the terminal in various hypothetical situations.
  • the CSI is represented by a rank indicator (R1), a precoding matrix indicator (PMI), and a channel quality indicator (CQI). )composition.
  • the R1 may be based on a system bandwidth measurement, and therefore, the RI is a full bandwidth RI (or a wideband RI); the PMI and the CQI may include a system bandwidth measurement based and a subband based measurement, and thus, the PMI may include Full bandwidth PMI (or wideband PMI) or subband PMI, CQI may include full bandwidth CQI (or wideband CQI) or subband CQI.
  • the load that is determined by the terminal and the at least two CSIs that need to be reported may include, but is not limited to:
  • bits included in the at least two CSIs.
  • the number of the at least two CSIs is the number of the at least two CSIs.
  • the terminal may further obtain the load threshold and the priority information.
  • the terminal may specifically receive the load threshold and the priority information that are sent by the base station by using high layer signaling.
  • the terminal may obtain the load threshold and the priority information at the same time, or may also obtain the load threshold and the priority information respectively.
  • the high layer signaling may be radio resource control (Radio Resource Control,
  • RRC RRC message, which can specifically pass the information element in the RRC message (Information Element,
  • the IE carries the load threshold and/or the priority information
  • the RRC message may be an RRC message in the prior art, for example, an RRC CONNECTION RECONFIGURATION message, etc., this embodiment does not
  • the load threshold and/or the priority information is carried by extending an IE of an existing RRC message, or the RRC message may also be an RRC message different from that existing in the prior art.
  • CE Control Element
  • the MAC CE message carries the load threshold and/or the priority information.
  • the terminal does not need to receive the load threshold and the priority information that are sent by the base station by using the high layer signaling, but may obtain the load threshold and/or the priority information according to a pre-configuration, for example, Agreement agreement.
  • the priority information may include, but is not limited to, first priority information and/or second priority information.
  • the first priority information may be determined according to content included in each CSI
  • the second priority information may be based on The number of each CSI, the CSI RS Reference Signal (CSI-RS) mapped resource number, the resource number of each CSI Interference Measurement Resource (IMR) mapping, and each At least one of the resource numbers of the PUCCH mapping of the CSI is determined.
  • the resource number may include, but is not limited to, a subband number, a resource block (RB) number, a bandwidth part (BP) number, or a subframe number.
  • the priority information is the first priority information.
  • the first priority information may be determined according to the content included in each CSI, and the corresponding mapping rule may be in multiple manners, for example, the first priority information indicated by the first priority information of the RI or the broadband PMI is the highest.
  • the first priority indicated by the first priority information of the wideband CQI is second; the first priority indicated by the first priority information of the subband CQI or the subband PMI is the lowest.
  • the terminal determines that it is necessary to report M (M is an integer greater than or equal to 2) CSIs. If the sum of the loads of the M CSIs is greater than the load threshold, the terminal may be configured according to the first priority information. Determining the first priority, sorting the determined M CSIs to be reported, and selecting the N CSIs with the first higher priority, because the sum of the loads reporting the N CSIs is less than or equal to the load threshold, The terminal may report the N CSIs to the base station.
  • M is an integer greater than or equal to 2
  • the priority information is the first priority information and the second priority information.
  • the first priority information may be determined according to content included in each CSI, for example, the first priority information indicated by the first priority information corresponding to the RI or the broadband PMI is the highest; the first priority information corresponding to the broadband CQI The indicated first priority is second; the first priority information indicated by the first priority information corresponding to the sub-band CQI or the sub-band PMI is the lowest.
  • the second priority information may be a resource number according to a CSI-RS mapping of each CSI, a resource number of an IMR mapping of each CSI, a resource number of a PUCCH mapping carrying each CSI, and each At least one of the CSI measurement hypotheses determines that the corresponding mapping rules can be in various ways, for example,
  • Different CSI numbers can use the same mapping rule to determine the corresponding second priority information. For example, the larger the number, the greater the priority indicated by the corresponding second priority information. If the CSI numbers are the same, the corresponding second priority information is also the same.
  • the number of different CSIs may be determined according to the resource number of the CSI-RS mapping of each CSI, and the corresponding second priority information is determined by using the corresponding mapping rule. For example, suppose the mapping rule has K (K is greater than or equal to 2), which are F 0 (), F 2 (), F m (), F K- i(), then, when When the remainder of the resource number divided by K is m, the terminal can use the mapping rule F m ().
  • the number of the different CSIs may be determined according to the resource number of the PUCCH mapping of each CSI, and the corresponding second priority information is determined by using the corresponding mapping rule. For example, suppose the mapping rule has K (K is greater than or equal to 2), which is F. (), F 2 (), F m (), F K- i(), then, when the remainder of the resource number divided by K is m, the terminal can use the mapping rule F m ().
  • Different CSI numbers may be used to determine corresponding second priority information according to the indication information by using corresponding mapping rules. For example, suppose the mapping rule has K (K is greater than or equal to 2), which are F 0 (), F 2 (), F m (), F K-1 (), then, when the mapping rule indicated by the indication information When F m (), the terminal can use the mapping rule F m ().
  • the indication information may be that the terminal receiving the base station sends the information through the high layer signaling, or may be obtained by the terminal according to the pre-configuration.
  • the resource number of the CSI-RS mapping of each CSI may be determined by using the same mapping rule to determine the corresponding second priority information. For example, the greater the resource number, the greater the priority indicated by the second priority information. If the CSI-RS mapping resource numbers of the CSI are the same, the corresponding second priority information is also the same.
  • the resource number of the IMR mapping of each CSI may be determined by using the same mapping rule to determine the corresponding second priority information. For example, the greater the resource number, the greater the priority indicated by the second priority information. If the resource numbers of the IMR mappings of the CSI are the same, the corresponding second priority information is also the same.
  • the different resource numbers of the PUCCH mappings that carry each CSI can use the same mapping rule to determine the corresponding second priority information. For example, the larger the resource number, the greater the priority indicated by the second priority information. If the resource numbers of the PUCCH mappings carrying the CSI are the same, the corresponding second priority information is also the same.
  • the terminal determines that it is necessary to report M (M is an integer greater than or equal to 2) CSIs. If the sum of the loads of the M CSIs is greater than the load threshold, the terminal may be configured according to the first priority information. Determining the first priority, sorting the determined M CSIs that need to be reported, and selecting the N CSIs with the first higher priority, because the sum of the loads reporting the N CSIs is still greater than the load threshold, therefore, The terminal may sort the selected C CSIs according to the second priority indicated by the second priority information, and select P CSIs with a second higher priority, because the P CSIs are reported. The sum of the loads is less than or equal to the load threshold, therefore, The terminal may report the P CSIs to the base station.
  • M is an integer greater than or equal to 2
  • the terminal may perform the discarding process except for the CSI other than the partial CSI reported by the performing 102.
  • the terminal may further adjust the priority indicated by the second priority information according to the CSI of the at least two CSIs that are reported. level.
  • CSI reducing a priority indicated by the first priority information corresponding to the content included in the partial CSI, and/or reducing a number of the partial CSI, a resource number of a CSI-RS mapping of the partial CSI, a priority indicated by the second priority information corresponding to at least one of a resource number of the IMR mapping of the partial CSI and a resource number of the PUCCH mapping of the partial CSI.
  • the number of CSIs that need to be reported by the last terminal is M
  • the value of D() corresponding to the N CSIs reported by the last CSI report is -A
  • the value of D() corresponding to the remaining M-N CSIs is 0.
  • the priority indicated by the message may be determined according to the following method:
  • the priority indicated by the increased second priority information D (number of CSI), where D (number of CSI) may take the value of 0 or A.
  • A (max(H(number of CSI))-min(H(number of CSI)))+delta
  • H() is the second priority information corresponding to the number of different CSIs when the CSI was reported last time
  • delta is a positive number. For example, the last time the terminal determines the need to report The number of CSIs is M.
  • the value of D() corresponding to the N CSIs reported by the previous CSI is 0, and the value of D() corresponding to the remaining MN CSIs is A.
  • the terminal determines, by using the terminal, the at least two CSIs that need to be reported, so that when the sum of the loads of the at least two CSIs is greater than the load threshold, the terminal can be based on the priority information of the at least two CSIs. And reporting a partial CSI in the at least two CSIs, so that a sum of loads of the partial CSIs is less than or equal to the load threshold, and being able to appropriately mitigate CSI for each transmission point when the terminal needs to report, for some reason The problem of CSI for all transmission points serving together for the terminal cannot be reported.
  • FIG. 2 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • the terminal in this embodiment may include a processor 21 and a transmitter 22.
  • the processor 21 is configured to determine at least two CSIs that need to be reported
  • the transmitter 22 is configured to: according to the priority information of the at least two CSIs, when the sum of the loads reporting the at least two CSIs is greater than a load threshold, And reporting a partial CSI of the at least two CSIs such that a sum of loads of the partial CSIs is less than or equal to the load threshold.
  • the at least two CSIs that need to be reported by the processor 21 can include the CSI measured by the terminal in various hypothetical situations.
  • the load of the at least two CSIs determined by the processor 21 may include, but is not limited to:
  • the number of the at least two CSIs is the number of the at least two CSIs.
  • the terminal in this embodiment may further include a receiver 31, configured to obtain the load threshold and the priority information, specifically The receiver 31 may specifically receive the payload sent by the base station by using high layer signaling. Threshold and the priority information.
  • the receiver 31 may obtain the load threshold and the priority information at the same time, or may also obtain the load threshold and the priority information, respectively.
  • the high-level signaling may be a Radio Resource Control (RRC) message, and may specifically pass an information element (Information Element, in an RRC message).
  • RRC Radio Resource Control
  • the IE carries the load threshold and/or the priority information
  • the RRC message may be an RRC message in the prior art, for example, an RRC CONNECTION RECONFIGURATION message, etc., this embodiment does not
  • the load threshold and/or the priority information is carried by extending an IE of an existing RRC message, or the RRC message may also be an RRC message different from that existing in the prior art.
  • the high-level signaling may be a Media Access Control (MAC) Control Element (CE) message, and may further carry the load threshold by adding a new MAC CE message and/or the Priority information.
  • MAC Media Access Control
  • CE Control Element
  • the terminal does not need to receive the load threshold and the priority information that are sent by the base station by using the high layer signaling, but may obtain the load threshold and/or the priority information according to a pre-configuration, for example, Agreement agreement.
  • the priority information may include, but is not limited to, first priority information and/or second priority information.
  • the first priority information may be determined according to content included in each CSI
  • the second priority information may be a resource number mapped according to the number of each CSI, CSI-RS per CSI, and At least one of the resource number of the IMR mapping of the CSI and the resource number of the PUCCH mapping of each CSI is determined.
  • the resource number may include, but is not limited to, a subband number, a resource block (RB) number, a bandwidth part (BP) number, or a subframe number.
  • the priority information is the first priority information.
  • the first priority information may be determined according to the content included in each CSI, and the corresponding mapping rule may be in multiple manners, for example, the first priority information indicated by the first priority information of the RI or the broadband PMI is the highest.
  • the first priority indicated by the first priority information of the wideband CQI is second; the first priority indicated by the first priority information of the subband CQI or the subband PMI is the lowest.
  • the processor 21 determines that M (M is an integer greater than or equal to 2) CSI needs to be reported. If the sum of the loads of the M CSIs is greater than the load threshold, the processor 21 The M CSIs that need to be reported are sorted according to the first priority indicated by the first priority information, and the N CSIs with the first higher priority are selected, because the N CSIs are reported. The sum of the loads is less than or equal to the load threshold. Therefore, the transmitter 22 can report the N CSIs to the base station.
  • the priority information is the first priority information and the second priority information.
  • the first priority information may be determined according to content included in each CSI, for example, the first priority information indicated by the first priority information corresponding to the RI or the broadband PMI is the highest; the first priority information corresponding to the broadband CQI The indicated first priority is second; the first priority information indicated by the first priority information corresponding to the sub-band CQI or the sub-band PMI is the lowest.
  • the second priority information may be in accordance with a number of each CSI, a resource number of a CSI-RS mapping of each CSI, a resource number of an IMR mapping of each CSI, and a resource number of a PUCCH mapping that carries each CSI.
  • At least one of the determinations, the corresponding mapping rules can be in various ways, for example,
  • Different CSI numbers can use the same mapping rule to determine the corresponding second priority information. For example, the larger the number, the greater the priority indicated by the corresponding second priority information. If the CSI numbers are the same, the corresponding second priority information is also the same.
  • the number of different CSIs may be determined according to the resource number of the CSI-RS mapping of each CSI, and the corresponding second priority information is determined by using the corresponding mapping rule. For example, suppose the mapping rule has K (K is greater than or equal to 2), which are F 0 (), F 2 (), F m (), F K- i(), then, when the resource number is divided by the remainder of K When m is m, the transmitter 22 can use the mapping rule F m ().
  • the number of the different CSIs may be determined according to the resource number of the PUCCH mapping of each CSI, and the corresponding second priority information is determined by using the corresponding mapping rule. For example, suppose the mapping rule has K (K is greater than or equal to 2), which is F. (), F 2 (), F m (), F K- i(), then, when the remainder of the resource number divided by K is m, the terminal can use the mapping rule F m ().
  • Different CSI numbers may be used to determine corresponding second priority information according to the indication information by using corresponding mapping rules. For example, suppose the mapping rule has K (K is greater than or equal to 2), respectively F 0 (), F 2 (), F m (), F K- i (), then, when the mapping rule indicated by the indication information For F m (), the transmitter 22 can use the mapping rule F m ().
  • the indication information may be that the terminal receiving the base station sends the information through the high layer signaling, or may be obtained by the terminal according to the pre-configuration.
  • Different CSI-RS mapping resource numbers for each CSI can use the same mapping rule.
  • the corresponding second priority information is determined. If the resource numbers of the CSI-RS mapping of the CSI are the same, the corresponding second priority information is also the same.
  • the resource number of the IMR mapping of each CSI may be determined by using the same mapping rule to determine the corresponding second priority information. For example, the greater the resource number, the greater the priority indicated by the second priority information. If the resource numbers of the IMR mappings of the CSI are the same, the corresponding second priority information is also the same.
  • the different resource numbers of the PUCCH mappings that carry each CSI can use the same mapping rule to determine the corresponding second priority information. For example, the larger the resource number, the greater the priority indicated by the second priority information. If the resource numbers of the PUCCH mappings carrying the CSI are the same, the corresponding second priority information is also the same.
  • the processor 21 determines that M (M is an integer greater than or equal to 2) CSIs are required to be reported. If the sum of the loads of the M CSIs is greater than the load threshold, the processor 21 may The first priority indicated by the priority information, the M CSIs that need to be reported are sorted, and the N CSIs with the first higher priority are selected, because the sum of the loads reporting the N CSIs is still greater than the load. a threshold, the processor 21 may sort the selected N CSIs according to the second priority indicated by the second priority information, and select P CSIs with a second higher priority. The transmitter 22 can report the P CSIs to the base station, because the sum of the loads of the P CSIs is less than or equal to the load threshold.
  • M is an integer greater than or equal to 2
  • the processor 21 may perform the discarding process except for the CSIs other than the partial CSI reported by the execution 102.
  • the processor 21 may further adjust the priority indicated by the second priority information according to the part of the CSIs of the at least two CSIs that are reported. level.
  • the processor 21 may specifically be based on the part of the at least two CSIs reported
  • CSI reducing a priority indicated by the first priority information corresponding to the content included in the partial CSI, and/or reducing a number of the partial CSI, a resource number of a CSI-RS mapping of the partial CSI, a priority indicated by the second priority information corresponding to at least one of a resource number of the IMR mapping of the partial CSI and a resource number of the PUCCH mapping of the partial CSI.
  • the priority indicated by the specifically reduced second priority information may be determined according to the following method:
  • the priority of the lower second priority information is 0 (the number of ⁇ 31), where D (the number of the CSI) can be 0 or -A.
  • A (max(H(number of CSI))-min(H(number of CSI)))+delta, where H() is indicated by the second priority information corresponding to the number of different CSIs when the CSI was reported last time
  • the priority delta is a positive number. For example, the number of CSIs that need to be reported by the last terminal is M, and the value of D() corresponding to the N CSIs reported by the previous CSI is -A, and the value of D() corresponding to the remaining MN CSIs is 0.
  • the processor 21 may specifically improve, according to the CSI of the at least two CSIs that are reported, the content corresponding to the content included in the CSI except the partial CSI in the at least two CSIs.
  • the priority indicated by the first priority information, and/or the number of the other CSI, the resource number of the CSI-RS mapping of the other CSI, the resource number of the IMR mapping of the other CSI, and the bearer of each CSI At least one of the resource numbers of the PUCCH mapping corresponds to a priority indicated by the second priority information.
  • the priority indicated by the specifically improved second priority information may be determined according to the following method:
  • the priority indicated by the increased second priority information D (number of CSI), where D (number of CSI) may be 0 or A.
  • A (max(H(number of CSI))-min(H(number of CSI)))+delta, where H() is the second priority information corresponding to the number of different CSIs when the CSI was reported last time
  • H() is the second priority information corresponding to the number of different CSIs when the CSI was reported last time
  • delta is a positive number. For example, the number of CSIs that need to be reported by the last terminal is M, and the value of D() corresponding to the N CSIs reported by the previous CSI is 0, and the value of D() corresponding to the remaining M-N CSIs is A.
  • the terminal determines, by the processor, the at least two CSIs that need to be reported, so that the transmitter can be based on the priority information of the at least two CSIs when the sum of the loads of the at least two CSIs is greater than the load threshold. And reporting a partial CSI in the at least two CSIs, so that a sum of loads of the partial CSIs is less than or equal to the load threshold, and being able to appropriately mitigate the CSI when each terminal needs to report CSI for each transmission point The reason is that the problem of CSI for all transmission points serving together for the terminal cannot be reported.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative
  • the division of the unit is only a logical function division, and the actual implementation may have another division manner, for example, multiple units or components may be combined or may be integrated into another system, or some features may be Ignore, or not execute.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute the method of the various embodiments of the present application. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and the like, and the program code can be stored. Medium.

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Abstract

本申请实施例提供一种信道状态信息上报方法及终端。本申请实施例通过终端确定需要上报的至少两个CSI,使得当上报所述至少两个CSI的载荷之和大于载荷阈值时,所述终端能够根据所述至少两个CSI的优先级信息,上报所述至少两个CSI中的部分CSI,以使得所述部分CSI的载荷之和小于或等于所述载荷阈值。

Description

信道状态信息上^ ¾方法及终端
技术领域
本申请涉及通信技术, 尤其涉及一种信道状态信息上报方法及终端。 背景技术
在无线通信系统例如: 长期演进( Long Term Evolution, LTE ) 系统中, 用户设备( User Equipment, UE )上报给演进型基站( Evolved NodeB, eNB ) 的信道状态信息(Channel Status Information, CSI )是由物理上行控制信 道 ( Physical Uplink Control Channel , PUCCH ) 载的。 由于协作多点 ( Coordinated Multiple Points, CoMP ) 、 载波聚合( Carrier Aggregation, CA )等技术的引入, 终端可能会有多个传输点 ( Transmission Point, TP ) 同时为其服务。 其中, 所述 TP 可以包括但不限于接入点 (Access Point, AP ) 、 基站、 基站下的小区、 载频、 载波、 远端无线设备( Remote Radio Equipment, RRE ) 、 远端无线端口 ( Remote Radio Head, RRH ) 、 远端 无线单元( Remote Radio Unit, RRU )或家用基站( Femto cell、 Home NodeB, HNB或 Home eNodeB, HeNB ) 。 J¾时, UE需要上艮针^每个传输点的 CSL
然而, 终端可能会出现由于某些原因无法上报针对为所述终端共同服务 的所有传输点的 CSI的问题,例如, 由于 PUCCH资源有限,而导致 PUCCH 无法容纳针对为终端共同服务的所有传输点的 CSI等原因, 如何緩解这个问 题造成的限制就成为一个问题。 发明内容
本申请的多个方面提供一种信道状态信息上报方法及终端, 用以实现在 终端需要上报至少一个 CSI 时, 适当緩解终端由于某些原因无法上报针对 为所述终端共同服务的所有传输点的 CSI的问题。
本申请的一方面, 提供一种 CSI上报方法, 包括:
终端确定需要上报的至少两个 CSI; 当上报所述至少两个 CSI的载荷之和大于载荷阈值时, 所述终端根据所 述至少两个 CSI的优先级信息, 上报所述至少两个 CSI中的部分 CSI , 以使 得所述部分 CSI的载荷之和小于或等于所述载荷阈值。
本申请的另一方面, 提供一种终端, 包括:
处理器, 用于确定需要上报的至少两个 CSI;
发送器, 用于当上报所述至少两个 CSI的载荷之和大于载荷阈值时, 根 据所述至少两个 CSI的优先级信息, 上报所述至少两个 CSI中的部分 CSI , 以使得所述部分 CSI的载荷之和小于或等于所述载荷阈值。
由上述技术方案可知, 本申请实施例通过终端确定需要上报的至少两个 CSI , 使得当上报所述至少两个 CSI 的载荷之和大于载荷阈值时, 所述终端 能够根据所述至少两个 CSI的优先级信息, 上报所述至少两个 CSI中的部分 CSI , 以使得所述部分 CSI 的载荷之和小于或等于所述载荷阈值, 能够在终 端需要上报针对每个传输点的 CSI时, 适当緩解由于某些原因无法上报针对 为所述终端共同服务的所有传输点的 CSI的问题。 附图说明 为了更清楚地说明本申请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一简单地介绍, 显而易见地, 下 面描述中的附图是本申请的一些实施例, 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为本申请一实施例提供的信道状态信息上报方法的流程示意图; 图 2为本申请另一实施例提供的终端的结构示意图;
图 3为本申请另一实施例提供的终端的结构示意图。 具体实施方式 为使本申请实施例的目的、 技术方案和优点更加清楚, 下面将结合本申 请实施例中的附图, 对本申请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申请一部分实施例, 而不是全部的实施例。 基于 本申请中的实施例, 本领域普通技术人员在没有作出创造性劳动前提下所获 得的所有其他实施例, 都属于本申请保护的范围。
本申请中, 终端可能会有多个传输点 (Transmission Point, TP ) 同时 为其服务。 其中, 所述 TP可以包括但不限于接入点( Access Point, AP ) 、 基站、基站下的小区、载频、载波、远端无线设备( Remote Radio Equipment, RRE )、远端无线端口( Remote Radio Head, RRH )、远端无线单元( Remote Radio Unit, RRU )或家用基站( Femto cell、 Home NodeB, HNB或 Home eNodeB, HeNB ) 。
如果终端有多个 TP 同时为其月良务, 终端则可以测量各种假设情况下的 CSI , 并上报给基站, 以使得基站能够根据终端所上报的每种假设情况下的 CSI对相关的 TP进行配置。 例如, 假设终端有两个 TP同时为其服务, 一种 假设情况为: TP1为用于向 UE发送下行信号的信号 TP, 该信号 TP发送下 行信号的发送功率 P1 , TP2为用于对所述 UE产生干扰的干扰 TP或该干扰 TP不发送下行信号; 另一种假设情况为: TP2为用于向所述 UE发送下行信 号的信号 TP, 该信号 TP发送下行信号的发送功率 P2, TP1 为用于对所述 UE产生干扰的干扰 TP或该干扰 TP不发送下行信号。
另外, 本文中术语"和 /或", 仅仅是一种描述关联对象的关联关系, 表示 可以存在三种关系, 例如, A和 /或 B, 可以表示: 单独存在 A, 同时存在 A 和 B, 单独存在 B这三种情况。 另外, 本文中字符 T, 一般表示前后关联对 象是一种"或"的关系。
图 1 为本申请一实施例提供的信道状态信息上报方法的流程示意图, 如 图 1所示。
101、 终端确定需要上报的至少两个 CSI。
102、 当上报所述至少两个 CSI 的载荷之和大于载荷阈值时, 所述终端 根据所述至少两个 CSI的优先级信息,上报所述至少两个 CSI中的部分 CSI , 以使得所述部分 CSI的载荷之和小于或等于所述载荷阈值。
可以理解的是, 所述终端确定的需要上报的至少两个 CSI可以包括终端 测量各种假设情况下的 CSI。
可选地,在本实施例的一个可能的实现方式中,所述 CSI由秩指示( Rank Indicator, Rl ) 、 预编码矩阵指示 ( Precoding Matrix Indicator, PMI )和信 道质量指示 ( Channel Quality Indicator, CQI )组成。 其中, 所述 Rl可以为基于系统带宽测量, 因此, RI则为全带宽 RI (或 宽带 RI ) ; 所述 PMI和所述 CQI可以包括基于系统带宽测量和基于子带测 量, 因此, PMI可以包括全带宽 PMI (或宽带 PMI )或子带 PMI , CQI可以 包括全带宽 CQI (或宽带 CQI )或子带 CQI。
可选地, 在本实施例的一个可能的实现方式中, 在 101 中, 所述终端确 定的所述需要上报的所述至少两个 CSI的载荷可以包括但不限于:
所述至少两个 CSI所包含的比特数( bits ) ; 或者
所述至少两个 CSI的数目。
可选地, 在本实施例的一个可能的实现方式中, 在 102之前, 所述终端 还可以进一步获得所述载荷阈值和所述优先级信息。
具体地, 所述终端具体可以接收所述基站通过高层信令发送的所述载荷 阈值和所述优先级信息。
需要说明的是,所述终端可以同时获得所述载荷阈值和所述优先级信息, 或者还可以分别获得所述载荷阈值和所述优先级信息。
例如, 所述高层信令可以是无线资源控制 (Radio Resource Control,
RRC ) 消息, 具体可以通过 RRC消息中的信息元素( Information Element,
IE )携带所述载荷阈值和 /或所述优先级信息, 所述 RRC消息可以为现有技 术中的 RRC 消息, 例如, RRC 连接重配置 ( RRC CONNECTION RECONFIGURATION ) 消息等, 本实施例对此不进行限定, 通过对已有的 RRC消息的 IE进行扩展携带所述载荷阈值和 /或所述优先级信息, 或者所述 RRC消息也可以为不同于现有技术中已有的 RRC消息。
再例如, 所述高层信令可以是媒体访问控制 (Media Access Control, MAC )控制元素 (Control Element, CE ) 消息, 具体还可以通过增加新的
MAC CE消息携带所述载荷阈值和 /或所述优先级信息。
具体地, 所述终端无需接收所述基站通过高层信令发送的所述载荷阈值 和所述优先级信息, 而是可以根据预先配置得到所述载荷阈值和 /或所述优先 级信息, 例如, 协议约定。
可选地, 在本实施例的一个可能的实现方式中, 所述优先级信息可以包 括但不限于第一优先级信息和 /或第二优先级信息。 其中, 所述第一优先级信 息可以为根据每个 CSI所包括的内容确定, 所述第二优先级信息可以为根据 每个 CSI的编号、 每个 CSI的 CSI参考信号 ( CSI RS Reference Signal, CSI-RS ) 映射的资源编号、 每个 CSI 的干扰测量资源 ( Interference Measurement Resource, IMR )映射的资源编号和 载每个 CSI的 PUCCH 映射的资源编号中的至少一项确定。 其中, 所述资源编号可以包括但不限于 子带编号、资源块( Resource Block, RB )编号、带宽部分( Bandwidth Parts, BP )编号或者子帧编号。
例如, 所述优先级信息为所述第一优先级信息。 所述第一优先级信息可 以为根据每个 CSI所包括的内容确定, 其对应的映射规则可以有多种方式, 如, RI或宽带 PMI 的第一优先级信息所指示的第一优先级最高; 宽带 CQI 的第一优先级信息所指示的第一优先级次之;子带 CQI或子带 PMI的第一优 先级信息所指示的第一优先级最低。
举例来说, 终端确定需要上报 M ( M为大于或等于 2的整数)个 CSI , 如果上报所述 M个 CSI的载荷之和大于载荷阈值,那么终端则可以根据所述 第一优先级信息所指示的第一优先级, 对所述确定的需要上报的 M 个 CSI 进行排序, 选择第一优先级较高的 N个 CSI , 由于上报该 N个 CSI的载荷之 和小于或等于载荷阈值, 因此, 所述终端则可以向基站上报所述 N个 CSI。
例如, 所述优先级信息为所述第一优先级信息和所述第二优先级信息。 所述第一优先级信息可以为根据每个 CSI所包括的内容确定, 如, RI或宽带 PMI对应的第一优先级信息所指示的第一优先级最高; 宽带 CQI对应的第一 优先级信息所指示的第一优先级次之;子带 CQI或子带 PMI对应的第一优先 级信息所指示的第一优先级最低。 所述第二优先级信息可以为根据每个 CSI 的编号、每个 CSI的 CSI-RS映射的资源编号、每个 CSI的 IMR映射的资源 编号、承载每个 CSI的 PUCCH映射的资源编号和每个 CSI的测量假设中的 至少一项确定, 其对应的映射规则可以有多种方式, 如,
不同的 CSI的编号可以利用同一映射规则, 确定出对应的第二优先级信 息, 例如, 编号越大对应的第二优先级信息所指示的优先级越大。 如果 CSI 的编号相同, 那么对应的第二优先级信息也相同。
不同的 CSI的编号可以根据每个 CSI的 CSI-RS映射的资源编号, 利用 对应的映射规则, 确定出对应的第二优先级信息。 例如, 假设映射规则有 K ( K大于或等于 2 )种, 分别是 F0(), F2(), Fm(), FK-i(), 那么, 当 资源编号除以 K的余数是 m时, 所述终端则可以釆用映射规则 Fm()。
不同的 CSI的编号可以根据承载每个 CSI的 PUCCH映射的资源编号, 利用对应的映射规则, 确定出对应的第二优先级信息。 例如, 假设映射规则 有 K ( K大于或等于 2 )种, 分别是 F。(), F2(), Fm(), FK-i(), 那么, 当资源编号除以 K的余数是 m时, 所述终端则可以釆用映射规则 Fm()。
不同的 CSI的编号可以根据指示信息, 利用对应的映射规则, 确定出对 应的第二优先级信息。 例如, 假设映射规则有 K ( K大于或等于 2 )种, 分别 是 F0(), F2(), Fm(), FK-1(), 那么, 当指示信息所指示的映射规则为 Fm()时, 所述终端则可以釆用映射规则 Fm()。 其中, 所述指示信息可以是所 述终端接收基站通过高层信令发送的, 或者还可以是所述终端根据预先配置 获得的。
不同的每个 CSI的 CSI-RS映射的资源编号可以利用同一映射规则, 确 定出对应的第二优先级信息, 例如, 资源编号越大对应的第二优先级信息所 指示的优先级越大。 如果 CSI的 CSI-RS映射的资源编号相同, 那么对应的 第二优先级信息也相同。
不同的每个 CSI的 IMR映射的资源编号可以利用同一映射规则,确定出 对应的第二优先级信息, 例如, 资源编号越大对应的第二优先级信息所指示 的优先级越大。 如果 CSI的 IMR映射的资源编号相同, 那么对应的第二优先 级信息也相同。
不同的承载每个 CSI 的 PUCCH 映射的资源编号可以利用同一映射规 贝' 确定出对应的第二优先级信息, 例如, 资源编号越大对应的第二优先级 信息所指示的优先级越大。 如果承载 CSI的 PUCCH映射的资源编号相同, 那么对应的第二优先级信息也相同。
举例来说, 终端确定需要上报 M ( M为大于或等于 2的整数)个 CSI , 如果上报所述 M个 CSI的载荷之和大于载荷阈值,那么终端则可以根据所述 第一优先级信息所指示的第一优先级, 对所述确定的需要上报的 M 个 CSI 进行排序, 选择第一优先级较高的 N个 CSI , 由于上报该 N个 CSI的载荷之 和仍然大于载荷阈值, 因此, 所述终端则可以根据所述第二优先级信息所指 示的第二优先级, 对所述选择的 N个 CSI进行排序, 选择第二优先级较高的 P个 CSI , 由于上报该 P个 CSI的载荷之和小于或等于载荷阈值, 因此, 所 述终端则可以向基站上报所述 P个 CSI。
需要说明的是,在终端通过执行 101确定的需要上报的至少两个 CSI中, 除了在执行 102上报的部分 CSI之外的其他 CSI , 所述终端则可以进行丟弃 处理。
可选地, 在本实施例的一个可能的实现方式中, 所述终端还可以进一步 根据所述上报的所述至少两个 CSI中的部分 CSI , 调整所述第二优先级信息 所指示的优先级。
CSI , 降低所述部分 CSI 所包括的内容对应的所述第一优先级信息所指示的 优先级, 和 /或降低所述部分 CSI的编号、 所述部分 CSI的 CSI-RS映射的资 源编号、所述部分 CSI的 IMR映射的资源编号和承载所述部分 CSI的 PUCCH 映射的资源编号中的至少一项对应的所述第二优先级信息所指示的优先级。
具体降低的第二优先级信息所指示的优先级可以根据如下方法确定: 降 低的第二优先级信息所指示的优先级=0(〇31 的编号), 其中 D(CSI 的编号) 取值可以为 0或 -A。其中 A=(max(H(CSI的编号)) -min(H(CSI的编号)) )+delta, 其中 H()是上次 CSI上报时不同 CSI的编号对应的第二优先级信息所指示的 优先级, delta是一个正数。 例如, 上次终端确定的需要上报的 CSI为 M个, 上次 CSI上报时上报的 N个 CSI对应的 D()取值为 -A, 其余 M-N个 CSI对 应的 D()取值为 0。
CSI , 提高所述至少两个 CSI中除了所述部分 CSI之外的其他 CSI所包括的 内容对应的所述第一优先级信息所指示的优先级,和 /或提高所述其他 CSI的 编号、 所述其他 CSI的 CSI-RS映射的资源编号、 所述其他 CSI的 IMR映射 的资源编号和^^载所述其他 CSI的 PUCCH映射的资源编号中的至少一项对 应的所述第二优先级信息所指示的优先级。 具体提高的第二优先级信息所指 示的优先级可以根据如下方法确定:
提高的第二优先级信息所指示的优先级 =D(CSI的编号), 其中 D(CSI的 编号)取值可以为 0 或 A。 其中 A=(max(H(CSI 的编号)) -min(H(CSI 的编 号)) )+delta, 其中 H()是上次 CSI上报时不同 CSI的编号对应的第二优先级 信息所指示的优先级, delta是一个正数。 例如, 上次终端确定的需要上报的 CSI为 M个, 上次 CSI上报时上报的 N个 CSI对应的 D()取值为 0, 其余 M-N个 CSI对应的 D()取值为 A。
本实施例中, 通过终端确定需要上报的至少两个 CSI , 使得当上报所述 至少两个 CSI的载荷之和大于载荷阈值时, 所述终端能够根据所述至少两个 CSI的优先级信息, 上报所述至少两个 CSI中的部分 CSI , 以使得所述部分 CSI 的载荷之和小于或等于所述载荷阈值, 能够在终端需要上报针对每个传 输点的 CSI时, 适当緩解由于某些原因无法上报针对为所述终端共同服务的 所有传输点的 CSI的问题。
需要说明的是, 对于前述的各方法实施例, 为了简单描述, 故将其都表 述为一系列的动作组合, 但是本领域技术人员应该知悉, 本申请并不受所描 述的动作顺序的限制, 因为依据本申请, 某些步骤可以釆用其他顺序或者同 时进行。 其次, 本领域技术人员也应该知悉, 说明书中所描述的实施例均属 于优选实施例, 所涉及的动作和模块并不一定是本申请所必须的。
在上述实施例中, 对各个实施例的描述都各有侧重, 某个实施例中没有 详述的部分, 可以参见其他实施例的相关描述。
图 2为本申请另一实施例提供的终端的结构示意图, 如图 2所示, 本实 施例的终端可以包括处理器 21和发送器 22。其中, 处理器 21用于确定需要 上报的至少两个 CSI;发送器 22用于当上报所述至少两个 CSI的载荷之和大 于载荷阈值时,根据所述至少两个 CSI的优先级信息,上报所述至少两个 CSI 中的部分 CSI , 以使得所述部分 CSI的载荷之和小于或等于所述载荷阈值。
可以理解的是, 所述处理器 21确定的需要上报的至少两个 CSI可以包 括终端测量各种假设情况下的 CSI。
可选地,在本实施例的一个可能的实现方式中,处理器 21所确定的所述 至少两个 CSI的载荷可以包括但不限于:
所述至少两个 CSI所包含的比特数; 或者
所述至少两个 CSI的数目。
可选地, 在本实施例的一个可能的实现方式中, 如图 3所示, 本实施例 的终端还可以进一步包括接收器 31, 用于获得所述载荷阈值和所述优先级信 具体地,接收器 31具体可以接收所述基站通过高层信令发送的所述载荷 阈值和所述优先级信息。
需要说明的是, 接收器 31 可以同时获得所述载荷阈值和所述优先级信 息, 或者还可以分别获得所述载荷阈值和所述优先级信息。
例如, 所述高层信令可以是无线资源控制 (Radio Resource Control, RRC ) 消息, 具体可以通过 RRC消息中的信息元素( Information Element,
IE )携带所述载荷阈值和 /或所述优先级信息, 所述 RRC消息可以为现有技 术中的 RRC 消息, 例如, RRC 连接重配置 ( RRC CONNECTION RECONFIGURATION ) 消息等, 本实施例对此不进行限定, 通过对已有的 RRC消息的 IE进行扩展携带所述载荷阈值和 /或所述优先级信息, 或者所述 RRC消息也可以为不同于现有技术中已有的 RRC消息。
再例如, 所述高层信令可以是媒体访问控制 (Media Access Control, MAC )控制元素 (Control Element, CE ) 消息, 具体还可以通过增加新的 MAC CE消息携带所述载荷阈值和 /或所述优先级信息。
具体地, 所述终端无需接收所述基站通过高层信令发送的所述载荷阈值 和所述优先级信息, 而是可以根据预先配置得到所述载荷阈值和 /或所述优先 级信息, 例如, 协议约定。
可选地, 在本实施例的一个可能的实现方式中, 所述优先级信息可以包 括但不限于第一优先级信息和 /或第二优先级信息。 其中, 所述第一优先级信 息可以为根据每个 CSI所包括的内容确定, 所述第二优先级信息可以为根据 每个 CSI的编号、 每个 CSI的 CSI-RS映射的资源编号、 每个 CSI的 IMR 映射的资源编号和承载每个 CSI的 PUCCH映射的资源编号中的至少一项确 定。 其中, 所述资源编号可以包括但不限于子带编号、 资源块(Resource Block, RB )编号、 带宽部分(Bandwidth Parts, BP )编号或者子帧编号。
例如, 所述优先级信息为所述第一优先级信息。 所述第一优先级信息可 以为根据每个 CSI所包括的内容确定, 其对应的映射规则可以有多种方式, 如, RI或宽带 PMI 的第一优先级信息所指示的第一优先级最高; 宽带 CQI 的第一优先级信息所指示的第一优先级次之;子带 CQI或子带 PMI的第一优 先级信息所指示的第一优先级最低。
举例来说, 处理器 21确定需要上报 M ( M为大于或等于 2的整数)个 CSI , 如果上报所述 M个 CSI的载荷之和大于载荷阈值, 那么处理器 21则 可以根据所述第一优先级信息所指示的第一优先级, 对所述确定的需要上报 的 M个 CSI进行排序, 选择第一优先级较高的 N个 CSI , 由于上报该 N个 CSI的载荷之和小于或等于载荷阈值, 因此, 发送器 22则可以向基站上报所 述 N个 CSI。
例如, 所述优先级信息为所述第一优先级信息和所述第二优先级信息。 所述第一优先级信息可以为根据每个 CSI所包括的内容确定, 如, RI或宽带 PMI对应的第一优先级信息所指示的第一优先级最高; 宽带 CQI对应的第一 优先级信息所指示的第一优先级次之;子带 CQI或子带 PMI对应的第一优先 级信息所指示的第一优先级最低。 所述第二优先级信息可以为根据每个 CSI 的编号、每个 CSI的 CSI-RS映射的资源编号、每个 CSI的 IMR映射的资源 编号和承载每个 CSI的 PUCCH映射的资源编号中的至少一项确定, 其对应 的映射规则可以有多种方式, 如,
不同的 CSI的编号可以利用同一映射规则, 确定出对应的第二优先级信 息, 例如, 编号越大对应的第二优先级信息所指示的优先级越大。 如果 CSI 的编号相同, 那么对应的第二优先级信息也相同。
不同的 CSI的编号可以根据每个 CSI的 CSI-RS映射的资源编号, 利用 对应的映射规则, 确定出对应的第二优先级信息。 例如, 假设映射规则有 K ( K大于或等于 2 )种, 分别是 F0(), F2(), Fm(), FK-i(), 那么, 当 资源编号除以 K的余数是 m时, 发送器 22则可以釆用映射规则 Fm()。
不同的 CSI的编号可以根据承载每个 CSI的 PUCCH映射的资源编号, 利用对应的映射规则, 确定出对应的第二优先级信息。 例如, 假设映射规则 有 K ( K大于或等于 2 )种, 分别是 F。(), F2(), Fm(), FK-i(), 那么, 当资源编号除以 K的余数是 m时, 所述终端则可以釆用映射规则 Fm()。
不同的 CSI的编号可以根据指示信息, 利用对应的映射规则, 确定出对 应的第二优先级信息。 例如, 假设映射规则有 K ( K大于或等于 2 )种, 分别 是 F0(), F2(), Fm(), FK-i(), 那么, 当指示信息所指示的映射规则为 Fm()时, 发送器 22则可以釆用映射规则 Fm()。 其中, 所述指示信息可以是所 述终端接收基站通过高层信令发送的, 或者还可以是所述终端根据预先配置 获得的。
不同的每个 CSI的 CSI-RS映射的资源编号可以利用同一映射规则, 确 定出对应的第二优先级信息。 如果 CSI的 CSI-RS映射的资源编号相同, 那 么对应的第二优先级信息也相同。
不同的每个 CSI的 IMR映射的资源编号可以利用同一映射规则,确定出 对应的第二优先级信息, 例如, 资源编号越大对应的第二优先级信息所指示 的优先级越大。 如果 CSI的 IMR映射的资源编号相同, 那么对应的第二优先 级信息也相同。
不同的承载每个 CSI 的 PUCCH 映射的资源编号可以利用同一映射规 贝' 确定出对应的第二优先级信息, 例如, 资源编号越大对应的第二优先级 信息所指示的优先级越大。 如果承载 CSI的 PUCCH映射的资源编号相同, 那么对应的第二优先级信息也相同。
举例来说, 处理器 21确定需要上报 M ( M为大于或等于 2的整数)个 CSI , 如果上报所述 M个 CSI的载荷之和大于载荷阈值, 那么处理器 21则 可以根据所述第一优先级信息所指示的第一优先级, 对所述确定的需要上报 的 M个 CSI进行排序, 选择第一优先级较高的 N个 CSI , 由于上报该 N个 CSI的载荷之和仍然大于载荷阈值, 因此, 所述处理器 21则可以根据所述第 二优先级信息所指示的第二优先级, 对所述选择的 N个 CSI进行排序, 选择 第二优先级较高的 P个 CSI , 由于上报该 P个 CSI的载荷之和小于或等于载 荷阈值, 因此, 发送器 22则可以向基站上报所述 P个 CSI。
需要说明的是, 在处理器 21确定的需要上报的至少两个 CSI 中, 除了 在执行 102上报的部分 CSI之外的其他 CSI , 处理器 21则可以进行丟弃处 理。
可选地,在本实施例的一个可能的实现方式中,处理器 21还可以进一步 根据所述上报的所述至少两个 CSI中的部分 CSI , 调整所述第二优先级信息 所指示的优先级。
例如, 处理器 21 具体可以根据所述上报的所述至少两个 CSI 中的部分
CSI , 降低所述部分 CSI 所包括的内容对应的所述第一优先级信息所指示的 优先级, 和 /或降低所述部分 CSI的编号、 所述部分 CSI的 CSI-RS映射的资 源编号、所述部分 CSI的 IMR映射的资源编号和承载所述部分 CSI的 PUCCH 映射的资源编号中的至少一项对应的所述第二优先级信息所指示的优先级。
具体降低的第二优先级信息所指示的优先级可以根据如下方法确定: 降 低的第二优先级信息所指示的优先级=0(〇31 的编号), 其中 D(CSI 的编号) 取值可以为 0或 -A。其中 A=(max(H(CSI的编号)) -min(H(CSI的编号)) )+delta, 其中 H()是上次 CSI上报时不同 CSI的编号对应的第二优先级信息所指示的 优先级, delta是一个正数。 例如, 上次终端确定的需要上报的 CSI为 M个, 上次 CSI上报时上报的 N个 CSI对应的 D()取值为 -A, 其余 M-N个 CSI对 应的 D()取值为 0。
再例如, 处理器 21 具体可以根据所述上报的所述至少两个 CSI 中的部 分 CSI ,提高所述至少两个 CSI中除了所述部分 CSI之外的其他 CSI所包括 的内容对应的所述第一优先级信息所指示的优先级, 和 /或提高所述其他 CSI 的编号、 所述其他 CSI的 CSI-RS映射的资源编号、 所述其他 CSI的 IMR映 射的资源编号和承载每个 CSI的 PUCCH映射的资源编号中的至少一项对应 的所述第二优先级信息所指示的优先级。 具体提高的第二优先级信息所指示 的优先级可以根据如下方法确定:
提高的第二优先级信息所指示的优先级 =D(CSI的编号), 其中 D(CSI的 编号)取值可以为 0 或 A。 其中 A=(max(H(CSI 的编号)) -min(H(CSI 的编 号)) )+delta, 其中 H()是上次 CSI上报时不同 CSI的编号对应的第二优先级 信息所指示的优先级, delta是一个正数。 例如, 上次终端确定的需要上报的 CSI为 M个, 上次 CSI上报时上报的 N个 CSI对应的 D()取值为 0, 其余 M-N个 CSI对应的 D()取值为 A。
本实施例中, 终端通过处理器确定需要上报的至少两个 CSI , 使得发送 器能够当上报所述至少两个 CSI的载荷之和大于载荷阈值时, 根据所述至少 两个 CSI的优先级信息, 上报所述至少两个 CSI中的部分 CSI , 以使得所述 部分 CSI的载荷之和小于或等于所述载荷阈值, 能够在终端需要上报针对每 个传输点的 CSI时, 适当緩解由于某些原因无法上报针对为所述终端共同服 务的所有传输点的 CSI的问题。
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 上述描 述的系统, 装置和单元的具体工作过程, 可以参考前述方法实施例中的对应 过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统, 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个 系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间 的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间接耦合 或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一个单 元中。 上述集成的单元既可以釆用硬件的形式实现, 也可以釆用硬件加软件 功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元, 可以存储在一个计算机 可读取存储介质中。 上述软件功能单元存储在一个存储介质中, 包括若干指 令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等) 或处理器(processor )执行本申请各个实施例所述方法的部分步骤。 而前述 的存储介质包括: U盘、 移动硬盘、 只读存储器(Read-Only Memory, 简称 ROM ) 、 随机存取存储器( Random Access Memory, 简称 RAM ) 、 磁碟 或者光盘等各种可以存储程序代码的介质。
最后应说明的是: 以上实施例仅用以说明本申请的技术方案, 而非对其 限制; 尽管参照前述实施例对本申请进行了详细的说明, 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申请各实施例技术方案的精神和范围。

Claims

权 利 要求 书
1、 一种信道状态信息 CSI上报方法, 其特征在于, 包括:
终端确定需要上报的至少两个 CSI;
当上报所述至少两个 CSI的载荷之和大于载荷阈值时, 所述终端根据所 述至少两个 CSI的优先级信息, 上报所述至少两个 CSI中的部分 CSI , 以使 得所述部分 CSI的载荷之和小于或等于所述载荷阈值。
2、 根据权利要求 1 所述的方法, 其特征在于, 所述至少两个 CSI的载 荷包括:
所述至少两个 CSI所包含的比特数; 或者
所述至少两个 CSI的数目。
3、根据权利要求 1或 2所述的方法, 其特征在于, 所述当上报所述至少 一个 CSI的载荷之和大于载荷阈值时, 所述终端根据所述至少两个 CSI的优 先级信息, 上报所述至少两个 CSI中的部分 CSI之前, 还包括:
所述终端获得所述载荷阈值和所述优先级信息。
4、根据权利要求 3所述的方法, 其特征在于, 所述终端获得所述载荷阈 值和所述优先级信息, 包括:
所述终端接收基站发送的所述载荷阈值和所述至少两个 CSI的优先级信
5、 根据权利要求 1~4任一权利要求所述的方法, 其特征在于, 所述优 先级信息包括第一优先级信息和 /或第二优先级信息; 所述第一优先级信息为 根据每个 CSI所包括的内容确定, 所述第二优先级信息为根据每个 CSI的编 号、 每个 CSI的 CSI参考信号 CSI-RS映射的资源编号、 每个 CSI的干扰测 量资源 IMR映射的资源编号和承载每个 CSI的物理上行控制信道 PUCCH映 射的资源编号中的至少一项确定。
6、 根据权利要求 5所述的方法, 其特征在于, 所述方法还包括: 所述终端根据所述上报的所述至少两个 CSI中的部分 CSI , 降低所述部 分 CSI所包括的内容对应的第一优先级信息所指示的优先级,和 /或降低所述 部分 CSI的编号、 所述部分 CSI的 CSI-RS映射的资源编号、 所述部分 CSI 的 IMR映射的资源编号和承载所述部分 CSI的 PUCCH映射的资源编号中的 至少一项对应的所述第二优先级信息所指示的优先级; 或者 所述终端根据所述上报的所述至少两个 CSI中的部分 CSI , 提高所述至 少两个 CSI中除了所述部分 CSI之外的其他 CSI所包括的内容对应的所述第 一优先级信息所指示的优先级, 和 /或提高所述其他 CSI 的编号、 所述其他 CSI的 CSI-RS映射的资源编号、 所述其他 CSI的 IMR映射的资源编号和 载所述其他 CSI的 PUCCH映射的资源编号中的至少一项对应的所述第二优 先级信息所指示的优先级。
7、 一种终端, 其特征在于, 包括:
处理器, 用于确定需要上报的至少两个信道状态信息 CSI;
发送器, 用于当上报所述至少两个 CSI的载荷之和大于载荷阈值时, 根 据所述至少两个 CSI的优先级信息, 上报所述至少两个 CSI中的部分 CSI , 以使得所述部分 CSI的载荷之和小于或等于所述载荷阈值。
8、根据权利要求 7所述的终端, 其特征在于, 所述处理器所确定的所述 至少两个 CSI的载荷包括:
所述至少两个 CSI所包含的比特数; 或者
所述至少两个 CSI的数目。
9、根据权利要求 7或 8所述的终端, 其特征在于, 所述终端还包括接收 器, 用于
获得所述载荷阈值和所述优先级信息。
10、 根据权利要求 9所述的终端, 其特征在于, 所述接收器具体用于 接收基站发送的所述载荷阈值和所述至少两个 CSI的优先级信息。
1 1、 根据权利要求 7~10任一权利要求所述的终端, 其特征在于, 所述 优先级信息包括第一优先级信息和 /或第二优先级信息; 所述第一优先级信息 为根据每个 CSI所包括的内容确定, 所述第二优先级信息为根据每个 CSI的 编号、 每个 CSI的 CSI参考信号 CSI-RS映射的资源编号、 每个 CSI的干扰 测量资源 IMR映射的资源编号和承载每个 CSI的物理上行控制信道 PUCCH 映射的资源编号中的至少一项确定。
12、 根据权利要求 1 1所述的终端, 其特征在于, 所述处理器还用于 根据所述上报的所述至少两个 CSI中的部分 CSI , 降低所述部分 CSI所 包括的内容对应的所述第一优先级信息所指示的优先级, 和 /或降低所述部分 CSI的编号、 所述部分 CSI的 CSI-RS的资源编号、 所述部分 CSI的 IMR映 射的资源编号和承载所述部分 CSI的 PUCCH映射的资源编号中的至少一项 对应的所述第二优先级信息所指示的优先级; 或者
根据所述上报的所述至少两个 CSI中的部分 CSI ,提高所述至少两个 CSI 中除了所述部分 CSI之外的其他 CSI所包括的内容对应的所述第一优先级信 息所指示的优先级,和 /或提高所述其他 CSI的编号、所述其他 CSI的 CSI-RS 的资源编号、 所述其他 CSI的 IMR映射的资源编号和^载所述其他 CSI的 PUCCH 映射的资源编号中的至少一项对应的所述第二优先级信息所指示的 优先级。
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CN102255694A (zh) * 2011-07-19 2011-11-23 电信科学技术研究院 信道状态信息传输方法和设备

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