WO2013010468A1 - Procédé et dispositif destinés à la transmission d'informations d'état de canal - Google Patents

Procédé et dispositif destinés à la transmission d'informations d'état de canal Download PDF

Info

Publication number
WO2013010468A1
WO2013010468A1 PCT/CN2012/078696 CN2012078696W WO2013010468A1 WO 2013010468 A1 WO2013010468 A1 WO 2013010468A1 CN 2012078696 W CN2012078696 W CN 2012078696W WO 2013010468 A1 WO2013010468 A1 WO 2013010468A1
Authority
WO
WIPO (PCT)
Prior art keywords
csi
priority
bits
downlink
downlink carrier
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2012/078696
Other languages
English (en)
Chinese (zh)
Inventor
高雪娟
沈祖康
林亚男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Academy of Telecommunications Technology CATT
Original Assignee
China Academy of Telecommunications Technology CATT
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 China Academy of Telecommunications Technology CATT filed Critical China Academy of Telecommunications Technology CATT
Publication of WO2013010468A1 publication Critical patent/WO2013010468A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028—Formatting
    • H04L1/0029—Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a channel state information transmission method and device.
  • LTE-A Long Term Evolution Advanced
  • LTE-A Long Term Evolution Advanced
  • CA Carrier Aggregation
  • the uplink and downlink carriers in the system can be asymmetrically configured, that is, the user may occupy Nl ⁇ 1 carriers for downlink transmission, and N2 ⁇ 1 carriers for uplink transmission, as shown in FIG. 1 .
  • the channel state information (CSI) of the downlink carrier is used for multi-carrier scheduling.
  • the CSI may include a rank indicator (RI) information, a channel quality indicator (CQI) information, a precoding matrix indicator (PMI M message, and a precoding type indicator (PTI).
  • RI rank indicator
  • CQI channel quality indicator
  • PMI M message precoding matrix indicator
  • PTI precoding type indicator
  • Information wherein the CQI information is further divided into wideband CQI (Wide-band CQI) information and sub-band CQI (Sub-band CQI) information.
  • the UE may follow the following four types. Reporting Mode Sends periodic CSI on the Physical Uplink Control CHannel (PUCCH):
  • Mode 1 -0 ie broadband CQI reporting mode, no PMI
  • the UE needs to report a type (Type) 3 report containing an RI value;
  • the UE needs to report a Type 4 report containing a wideband CQI value.
  • the Type 4 report only contains the CQI value of the codeword 0, regardless of whether the RI value is greater than 1.
  • the CQI value is based on the last report.
  • Mode 1-1 ie broadband CQI + single PMI reporting mode
  • the UE needs to report a Type 3 report containing an RI value
  • the UE reports a Type 5 report containing the joint coding information of the RI value and the first PMI value; in the 4 subframes on the CQI and the PMI: the UE selects a PMI value from the codebook subset, and determines one Broadband
  • the CQI value which is assumed to be calculated using all of the selected single PMI values in all subbands.
  • the CQI value further includes a 3-bit wideband spatial differential CQI value, indicating codeword 1
  • codeword 1 The difference between the CQI value and the CQI value of the code 0.
  • the Type2b report including the above-mentioned broadband CQI value and a selected second PMI value is reported;
  • the Type 2c 4 report including the above-mentioned wideband CQI value and the first PMI value and the second PMI value determined according to the single PMI selected above is reported.
  • Mode 2-0 ie sub-band CQI reporting mode, no PMI:
  • the UE needs to report a Type 3 report containing an RI value
  • the UE reports a Type 6 report including an RI value and a PTI value;
  • the UE selects a PMI value from the codebook subset, and further reports the CQI value and the PMI value according to the following conditions:
  • the UE shall report a Type 2 report, including: a wideband CQI value, which is assumed to be calculated using the selected single PMI value in all subbands, and one The selected wideband PMI (wideband PMI) value; when RI>1, a 3-bit wideband spatial difference is also included. CQI value;
  • Type2a report containing a selected first threshold
  • a wideband CQI value which is assumed to be calculated using the selected single PMI value in all subbands, and a selected second PMI value, when RI>1, including one 3-bit wideband spatial differential CQI value;
  • the UE In the CQI reporting subframe of the selected sub-band: In each J bandwidth portion, the UE should select a preferred sub-band in the sub-band set containing Nj sub-bands, and further report the CQI value and the PMI value according to the following conditions:
  • the UE sends a Typel report for each bandwidth part at each independent continuous reporting occasion, including: CQI value of the codeword 0 in the preferred subband And the L-bit flag of the preferred sub-band, the CQI value only reflects the transmission condition on the selected sub-band in the bandwidth portion determined in the previous step, and when RI>1, the sub-band spatial differential CQI value of the additional 3 bits is also included , representing a difference value between the sub-band CQI value of codeword 1 and the sub-band CQI value of codeword 0, and assuming that all sub-bands are calculated using the last reported single PMI value;
  • the Typela report includes: a CQI value of the codeword 0 in the preferred subband, and an L bit flag of the preferred subband, the CQI value only reflecting the transmission condition on the selected subband in the bandwidth portion determined in the previous step, when RI >1, an additional 3-bit subband spatial difference CQI value is also included, and is assumed to be calculated using the last reported single PMI value in all subbands, and a second PMI value selected from the codebook subset;
  • CSI types 10 kinds of CSI types (Reporting Type) as shown in Table 1 are defined.
  • one carrier only has one Type in Table 1. Therefore, the maximum CSI feedback bit number of one carrier is 11 bits (where, for the subband CQI mode, the subband index L is at most 2). Bit).
  • the transmission of periodic CSI in the LTE-ARel-10 system uses the PUCCH format (format) 2/2a/2b, and its maximum transmission capacity is 13 bits. Therefore, the Rel-10 system only supports feedback of one downlink carrier in one subframe. CSI.
  • the carrier with the highest Type priority is selected according to the Type priority, and the CSI corresponding to the carrier is the Type with the highest priority.
  • Table 1 The number of bits on each PUCCH CSI
  • bits/BP bits/BP
  • bits/BP bits/BP
  • bits/BP bits/BP
  • bits/BP bits/BP
  • Sub-band RI 1 NA 4+L NA 4+L
  • antenna ports are antenna ports.
  • the spatial multiplexing is spatial multiplexing, the layer is the number of transmission layers, and NA indicates that the reporting type is not supported in the corresponding mode.
  • the inventors have found that the following technical problems exist in the prior art:
  • the UE cannot simultaneously perform periodic CSI on multiple downlink carriers in one uplink subframe, and the CSI of each carrier in the TDM mode can cause CSI feedback of some carriers.
  • the period is large, and the feedback density of ACK/NACK and CSI in the LTE-A system is large.
  • the probability that the CSI is discarded and not reported is also large, so that the base station cannot obtain the CSI on these carriers in time. , thus affecting the accuracy of downlink scheduling. Summary of the invention
  • the embodiment of the invention provides a CSI transmission method and device, which are used to improve the accuracy of downlink scheduling.
  • a CSI transmission method comprising:
  • the terminal determines a threshold of the number of CSI feedback bits in the current uplink subframe
  • a CSI receiving method comprising:
  • the number of CSI bits actually fed back by the frame is the total number of CSI bits after the compression; otherwise, determining that the number of CSI bits actually fed back by the terminal in the current uplink subframe is the total number of CSI bits;
  • the base station decodes the CSI transmitted in the current uplink subframe according to the determined number of CSI bits actually fed back by the terminal in the current uplink subframe.
  • a terminal comprising:
  • a determining module configured to determine a CSI feedback bit number threshold in the current uplink subframe, and determine a total CSI feedback bit number of the plurality of downlink carriers that need to feed back the CSI in the current uplink subframe;
  • a processing module configured to determine whether the total CSI feedback bit number determined by the determining module is greater than the CSI feedback bit number threshold; if yes, compress the CSI that needs to be fed back in the current uplink subframe, and The compressed CSI is fed back to the base station in the current uplink subframe; otherwise, the CSI of the multiple downlink carriers is simultaneously fed back to the base station in the current uplink subframe.
  • a base station comprising:
  • a determining module configured to determine a CSI feedback bit number threshold of the terminal in the current uplink subframe, and determine a total CSI bit number of the plurality of downlink carriers that the terminal needs to feed back CSI in the current uplink subframe;
  • a determining module configured to determine whether the total number of CSI bits determined by the determining module is greater than the CSI And determining, by the terminal, the CSI that is fed back in the current subframe, and determining that the number of CSI bits actually fed back by the terminal in the current uplink subframe is the compressed CSI total bit.
  • the number of CSI bits actually measured by the terminal in the current uplink subframe is the total number of CSI bits;
  • the receiving module is configured to decode the CSI transmitted in the current uplink subframe according to the CSI bit number actually feedbacked by the terminal in the current uplink subframe determined by the determining module.
  • the terminal determines a CSI feedback bit threshold value in the current uplink subframe, and a total CSI feedback bit number of multiple downlink carriers that need to feed back CSI in the current uplink subframe, and then determines the Whether the total CSI feedback bit number is greater than the CSI feedback bit number threshold; if yes, compressing the CSI that needs to be fed back in the current uplink subframe, and feeding back the compressed CSI to the base station in the current uplink subframe; otherwise, The CSI of the multiple downlink carriers is fed back to the base station in the current uplink subframe.
  • the present invention can adaptively determine whether the CSI needs to be compressed according to whether the total number of bits of the CSI of the multi-carrier exceeds the upper limit of the CSI transmission of the transmission scheme, and transmit as many downlinks as possible without exceeding the CSI transmission upper limit.
  • the CSI of the carrier is used to improve the transmission efficiency of the CSI, so that the base station can obtain the CSI of the multi-carrier in time, and improve the accuracy of the downlink scheduling.
  • FIG. 1 is a schematic diagram of a carrier aggregation system in the prior art
  • FIG. 2 is a schematic flowchart of a method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of another method according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a device according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of another device according to an embodiment of the present invention.
  • the embodiment of the present invention provides a CSI transmission method.
  • the total number of CSI feedback bits of multiple downlink carriers that need to feed back CSI in the current uplink subframe is greater than the current uplink.
  • the CSI feedback bit number threshold in the frame is used, the CSI that needs to be fed back in the current uplink subframe is compressed and transmitted; and when the number of CSI feedback bits of the multiple downlink carriers that need to feed back the CSI in the current uplink subframe is not greater than
  • the CSI feedback bit number threshold in the current uplink subframe is transmitted, the CSIs of the multiple downlink carriers are simultaneously transmitted.
  • a CSI transmission method provided by an embodiment of the present invention includes the following steps:
  • Step 20 The terminal determines a CSI feedback bit threshold in the current uplink subframe, and determines a total CSI feedback bit number of multiple downlink carriers that need to feed back the CSI in the current uplink subframe.
  • Step 21 The terminal determines whether the total CSI feedback bit number is greater than the CSI feedback bit number threshold; if yes, compresses the CSI that needs to be fed back in the current uplink subframe, and feeds back to the base station in the current uplink subframe. The compressed CSI; otherwise, the CSI of the multiple downlink carriers is fed back to the base station in the current uplink subframe.
  • the CSI feedback bit number threshold is obtained by the terminal through high-layer signaling or physical downlink control channel (PDCCH) signaling; or
  • the threshold of the CSI feedback bit number is pre-agreed by the terminal and the base station; or
  • the CSI feedback bit number threshold is determined by the terminal according to a Physical Uplink Control Channel (PUCCH) format used by the CSI to transmit; or
  • PUCCH Physical Uplink Control Channel
  • the CSI feedback bit number threshold is a PUCCH format used by the terminal to transmit simultaneously with a positive acknowledgement (ACK)/negative acknowledgement (NACK) and/or a scheduling request (SR) according to CSI, and the same uplink with CSI.
  • ACK positive acknowledgement
  • NACK negative acknowledgement
  • SR scheduling request
  • the CSI feedback bit number threshold is determined by the terminal according to the PUCCH format used for CSI and ACK/NACK simultaneous transmission, and the number of bits of ACK/NACK transmitted simultaneously with the CSI in the same uplink subframe; for example, The threshold of the number of CSI feedback bits is determined by the number of bits of the PUCCH format used by the terminal to transmit simultaneously with the CSI and the SR, and the number of bits of the SR that are simultaneously transmitted by the CSI in the same uplink subframe; for example, the number of CSI feedback bits The threshold is determined by the terminal according to the PUCCH format used for CSI and ACK/NACK and SR simultaneous transmission, and the number of bits of ACK/NACK and SR transmitted simultaneously with the CSI in the same uplink subframe.
  • the CSI feedback bit number threshold is any integer that does not exceed the maximum number of transmission bits A of the PUCCH format used for transmitting the CSI; or
  • the CSI feedback bit number threshold is any integer that does not exceed AK bits, where A is the maximum number of transmission bits of the PUCCH format used for simultaneous transmission of CSI and ACK/NACK and/or SR, and K is on the same uplink as CSI.
  • A is the maximum number of transmission bits of the PUCCH format used for simultaneous transmission of CSI and ACK/NACK and/or SR
  • K is on the same uplink as CSI.
  • A is the maximum number of transmission bits of the PUCCH format used for simultaneous transmission of CSI and ACK/NACK
  • K is the number of bits of ACK/NACK transmitted simultaneously with the CSI in the same uplink subframe
  • A is CSI and SR Simultaneous transmission of the maximum number of transmission bits of the PUCCH format used
  • K is the number of bits of the SR transmitted simultaneously with the CSI in the same uplink subframe
  • A is the PUCCH format used for simultaneous transmission of CSI and ACK/NACK and SR.
  • the maximum number of transmission bits, K is the number of ACK/NACK and SR bits transmitted simultaneously with the CSI in the same uplink subframe.
  • step 20 the terminal determines the total number of CSI bits of multiple downlink carriers that need to be fed back in the current subframe, and the specific implementation may be as follows:
  • the number of CSI feedback bits is the total number of CSI bits that need to be fed back in the current subframe.
  • step 21 the terminal compresses the CSI that needs to be fed back in the current uplink subframe, and the specific implementation may be as follows:
  • the terminal feeds back the priority of each downlink carrier of the CSI in the current uplink subframe and/or the priority of the CSI on the downlink carrier in the current uplink subframe, and needs to feed back the CSI in the current uplink subframe.
  • the CSI of a part of the downlink carriers of the plurality of downlink carriers is discarded, so that the total number of bits of the remaining CSI is not greater than the CSI feedback bit number threshold, and the remaining CSI is taken as the compressed CSI.
  • the combination between the two methods may include, but is not limited to, the following four methods:
  • the terminal feeds back the priority of each downlink carrier in the plurality of downlink carriers of the CSI in the current uplink subframe, and the CSI needs to be fed back in the current uplink subframe according to the downlink carrier priority from low to high.
  • the CSI of the low-priority downlink carrier of the multiple downlink carriers is discarded, so that the total number of bits of the remaining CSI is not greater than the CSI feedback bit number threshold, and the remaining CSI is used as the compressed CSI;
  • the terminal feeds back the priority of the CSI reporting type of each downlink carrier of the CSI in the current uplink subframe according to the need, and the priority of the CSI reporting type is from low to high, and the current uplink is required.
  • the CSI of the downlink carrier with the low priority CSI reporting type among the multiple downlink carriers that feed back the CSI in the frame is discarded, so that the total number of bits of the remaining CSI is not greater than the threshold of the CSI feedback bit number, and the remaining CSI is used as the compressed CSI; if the CSI reporting type of the remaining downlink carriers belongs to the same priority, and the total number of bits of the CSI of the remaining downlink carriers still exceeds the CSI feedback bit threshold, the terminal further according to the remaining The priority of the downlink carrier is discarded, and the CSI of the low-priority downlink carrier in the remaining downlink carriers is discarded in the order of the downlink carrier priority from low to high, so that the total number of remaining CSIs is not greater than the CSI.
  • the terminal feeds back the downlink carriers of the multiple downlink carriers of the CSI in the current uplink subframe as needed.
  • the priority of the CSI type will be required to be grouped into a group of downlink carriers having the same CSI on the CSI multiple downlink carriers in the current uplink subframe, for each CSI.
  • the downlink carriers in the downlink carrier group corresponding to the priority of the type are discarded according to the priority of the downlink carrier, and the CSI of the low-priority downlink carrier is discarded in the order of the downlink carrier priority from low to high, so that the total of the remaining CSIs is discarded.
  • the number of bits is not greater than the CSI feedback bit number threshold, and the remaining CSI is used as the compressed CSI; if there is at most one downlink carrier in the downlink carrier group corresponding to each CSI type priority, and If the total number of CSIs of the remaining downlink carriers still exceeds the CSI feedback bit threshold, the terminal further performs the remaining according to the priority of the CSI reporting type according to the priority of the CSI reporting type from low to high.
  • the CSI of the downlink carrier with the low priority CSI reporting type in the downlink carrier is discarded, so that the total number of remaining CSI bits is not greater than the CSI inverse Feeding the number of bits threshold, and using the remaining CSI as the compressed CSI;
  • the terminal feeds back the priority of the CSI on the downlink carrier of the CSI in the current uplink subframe, and needs to feed the CSI in the downlink subframe in the current uplink subframe.
  • the downlink carriers having the same CSI reporting type priority are grouped into one group, and the downlink carrier group corresponding to the low priority CSI type is selected according to the order of the CSI reporting type priority from low to high, and the low priority is selected.
  • the downlink carrier in the downlink carrier group corresponding to the level CSI ⁇ ⁇ ⁇ type discards the CSI of the low priority downlink carrier according to the priority of the downlink carrier according to the downlink carrier priority from low to high, so that the remaining CSI is discarded.
  • the total number of bits is not greater than the CSI feedback bit number threshold, and the remaining CSI is taken as the compressed CSI.
  • a priority of each downlink carrier in the multiple downlink carriers is predefined in the system (UE and base
  • the station is pre-agreed; or, configured for higher layer signaling or PDCCH signaling; or, determined according to the number of the corresponding downlink carrier.
  • the priority of the CSI reporting type of each of the plurality of downlink carriers is predefined in the system (pre-defined by the UE and the base station); or configured for high layer signaling or PDCCH signaling; or, according to The CSI information type corresponding to the CSI report type is determined.
  • the terminal may feed back the CSI to the base station through the PUCCH or the Physical Uplink Shared CHannel (PUSCH).
  • PUCCH Physical Uplink Shared CHannel
  • the PUCCH format used in the present invention may be: PUCCH format 2, or PUCCH format 2a, or PUCCH format 2b, or PUCCH format 3.
  • the CSI in the present invention may include: one or any combination of CQI information, PMI information, RI information, PTI information.
  • an embodiment of the present invention further provides a CSI receiving method, where the method includes:
  • Step 30 The base station determines a threshold of a CSI feedback bit number of the terminal in the current uplink subframe, and determines that the terminal needs to feed back a total number of CSI bits of multiple downlink carriers of the CSI in the current uplink subframe.
  • Step 31 The base station determines whether the total CSI bit number is greater than the CSI feedback bit number threshold; if yes, determining that the terminal compresses the CSI fed back in the current subframe, and determining that the terminal is currently uplinking
  • the number of CSI bits actually fed back by the subframe is the total number of CSI bits after the compression; otherwise, determining that the number of CSI bits actually fed back by the terminal in the current uplink subframe is the total number of CSI bits;
  • Step 32 The base station receives the CSI fed back by the terminal according to the determined number of CSI bits actually received by the terminal in the current uplink subframe.
  • the CSI feedback bit number threshold is determined by the base station itself, and is configured to the terminal by using high layer signaling or physical downlink control channel PDCCH signaling; or
  • the threshold of the CSI feedback bit number is pre-agreed by the base station and the terminal; or
  • the CSI feedback bit number threshold is determined by the base station according to the PUCCH format used by the terminal to transmit CSI; or
  • the CSI feedback bit number threshold is an ACK/NACK and/or that is transmitted by the base station according to CSI, ACK/NACK, and/or SR simultaneous transmission of the terminal and CSI in the same uplink subframe.
  • the number of bits of the SR is determined.
  • the CSI feedback bit number threshold is any integer that does not exceed the maximum number of transmission bits A of the PUCCH format used for transmitting the CSI; or
  • the CSI feedback bit number threshold is any integer that does not exceed AK bits, where A is the maximum transmission bit number of the CIC and ACK/NACK and/or the PUCCH format used by the SR, and K is in the same uplink subframe as the CSI.
  • the base station determines the total number of CSI bits of the plurality of downlink carriers that the terminal needs to feed back CSI in the current uplink subframe, and the specific implementation may be as follows:
  • the base station determines, according to the CSI reporting type of each downlink carrier of the multiple downlink carriers, the number of CSI feedback bits on the corresponding downlink carrier, and the sum of the number of CSI feedback bits on each downlink carrier, that is, the terminal needs to be in the current subframe.
  • the total number of CSI bits in the feedback is the total number of CSI bits in the feedback.
  • step 31 the method for determining the total number of CSI bits after compression may be as follows:
  • the base station needs to prioritize the priority of each downlink carrier and/or the priority of the CSI reporting type of each downlink carrier, which is required by the terminal to feed back the CSI in the current uplink subframe, and the terminal needs to be in the current uplink.
  • the CSI of the downlink carriers of the plurality of downlink carriers that are fed back to the CSI in the subframe is discarded, so that the total number of CSI bits of the remaining downlink carriers is not greater than the CSI feedback bit number threshold, and the total number of CSI bits of the remaining downlink carriers is As the total number of CSI bits after compression.
  • the combination of the priority of the downlink carrier and the priority of the CSI reporting type may include, but is not limited to, the following four methods:
  • the base station needs to forward the priority of each downlink carrier in the plurality of downlink carriers of the CSI in the current uplink subframe according to the terminal, and the terminal needs to be in the order of the downlink carrier priority from low to high.
  • the CSI of the low-priority downlink carriers of the plurality of downlink carriers that are fed back to the CSI in the current uplink subframe is discarded, so that the total number of bits of the remaining CSI is not greater than the threshold of the CSI feedback bit number, and the remaining total number of CSI bits is used as The total number of CSI bits after compression;
  • the base station according to the priority of the CSI reporting type of each downlink carrier in the downlink subframes that the terminal needs to feed back CSI in the current uplink subframe, according to the order of the CSI reporting type priorities from low to high, The terminal needs to discard the CSI of the downlink carrier with the low priority CSI reporting type among the multiple downlink carriers that feed back the CSI in the current uplink subframe, so that the total number of bits of the remaining CSI is not greater than the threshold of the CSI feedback bit number.
  • the total number of remaining CSI bits is used as the total number of bits of the compressed CSI; if the CSI reporting types of the remaining downlink carriers belong to the same priority, and the total number of CSIs of the remaining downlink carriers still exceeds the CSI
  • the base station further discards the CSI of the low priority downlink carrier in the remaining downlink carriers according to the priority of the remaining downlink carriers according to the priority of the remaining downlink carriers, in descending order of the downlink carrier priorities.
  • the total number of bits of the remaining CSI is not greater than the CSI feedback bit number threshold, and the remaining CSI total ratio is again As the total number of bits after compression CSI number;
  • the base station needs to forward the CSI on the downlink carrier of the CSI in the current uplink subframe according to the priority of the terminal, and the terminal needs to be in the current uplink subframe.
  • the downlink carriers having the same CSI reporting type priority among the multiple downlink carriers of the CSI are grouped into one group, and the downlink carriers in the downlink carrier group corresponding to each CSI reporting type priority are according to the priority of the downlink carrier, according to the downlink carrier.
  • the CSI of the low-priority downlink carrier is discarded in the order of the priority from low to high, so that the total number of bits of the remaining CSI is not greater than the threshold of the CSI feedback bit number, and the remaining total number of CSI bits is used as the compressed CSI total number of bits; if each CSI is described Up to one downlink carrier in the downlink carrier group corresponding to the priority of the reporting type, and the remaining downlink carriers
  • the total number of bits of the CSI still exceeds the CSI feedback bit threshold, and the base station further performs the remaining according to the priority of the CSI type according to the priority of the CSI type, the order of priority from low to high.
  • the CSI discarding of the downlink carrier of the 4 ⁇ type on the low-priority CSI in the downlink carrier is such that the total number of bits of the remaining CSI is not greater than the threshold of the CSI feedback bit number, and the remaining number of remaining CSI bits is used as the compressed Total number of CSI bits;
  • the base station needs to forward the CSI on the downlink carrier of the CSI in the current uplink subframe according to the priority of the terminal, and the terminal needs to be in the current uplink subframe.
  • the downlink carriers having the same CSI reporting type priority among the multiple downlink carriers of the CSI are grouped into one group, and the downlink carriers corresponding to the 4 ⁇ type on the low priority CSI are selected according to the order of the CSI reporting type priorities from low to high.
  • the downlink carrier in the downlink carrier group corresponding to the low-priority CSI reporting type is low-prioritized according to the priority of the downlink carrier according to the downlink carrier priority from low to high.
  • the CSI of the downlink carrier of the level is discarded, so that the total number of bits of the remaining CSI is not greater than the threshold of the CSI feedback bit number, and the remaining CSI is taken as the compressed CSI.
  • the priority of each downlink carrier in the multiple downlink carriers is predefined in the system (pre-defined by the base station and the UE); or configured for high layer signaling or PDCCH signaling; or The number of the downlink carrier is determined.
  • the priority of the CSI reporting type of each of the plurality of downlink carriers is pre-defined in the system (pre-defined by the base station and the UE); or configured for higher layer signaling or PDCCH signaling; or, according to The CSI information type corresponding to the CSI type is determined.
  • the base station may receive the CSI through the PUCCH or the PUSCH.
  • the PUCCH format may be: PUCCH format 2, or PUCCH format 2a, or
  • PUCCH format 2b or PUCCH format 3.
  • the CSI may include: one or any combination of CQI information, PMI information, RI information, and PTI information.
  • the interaction between the terminal side and the base station side is implemented as follows:
  • the terminal determines a CSI feedback bit number threshold in the current uplink subframe, and determines a total CSI feedback bit number of the plurality of downlink carriers that need to feed back CSI in the current uplink subframe; determining whether the total CSI feedback bit number is The SSI is greater than the CSI feedback bit threshold; if yes, the CSI that needs to be fed back in the current uplink subframe is compressed, and the compressed CSI is fed back to the base station in the current uplink subframe; otherwise, in the current uplink subframe The base station simultaneously feeds back CSIs of the multiple downlink carriers;
  • the total number of bits otherwise, it is determined that the number of CSI bits actually fed back by the terminal in the current uplink subframe is the total number of CSI bits; according to the number of CSI bits actually fed back by the terminal in the current uplink subframe, the current uplink
  • the CSI transmitted in the subframe is decoded.
  • Step 1 The UE determines the CSI feedback bit number threshold according to the PUCCH format used by the CSI in the current subframe.
  • the CSI feedback bit number threshold is related to the transmission capacity of the PUCCH format for transmitting CSI; may be any integer that does not exceed the transmission capacity; the value may be pre-agreed by the UE and the base station (predefined in the system) Or, configured for higher layer signaling or PDCCH signaling; or determined for the UE according to the PUCCH format used for transmitting CSI (according to the transmission capacity); or, for the UE, simultaneously transmitting according to CSI and ACK/NACK and/or SR
  • the PUCCH format may be PUCCH format 2/2a/2b/3 or extended PUCCH format 3, and other transmission schemes are not excluded;
  • the CSI feedback bit number threshold may be 12 or 13 bits
  • the CSI feedback bit number threshold may be 20 or 21 bits
  • Step 2 The UE determines the number of CSI feedback bits on each downlink carrier that needs to perform CSI feedback according to the CSI reporting type (Reporting Type) of each downlink carrier in the downlink carriers that need to perform CSI feedback in the current subframe, and then determines the number of CSI feedback bits on the downlink carrier that needs to perform CSI feedback.
  • Step 3 The UE determines whether the total CSI feedback bit number is greater than the CSI feedback bit number threshold: if not greater than, the CSIs of the multiple downlink carriers are cascaded together, and the cascading is fed back to the base station in the current uplink subframe. If the CSI is greater, the CSI of the multiple downlink carriers needs to be compressed, and the compressed CSI is fed back to the base station in the current uplink subframe.
  • the CSI of the multiple downlink carriers is compressed, and the following four methods may be used:
  • Method 1 According to the downlink carrier priority, the CSI of the downlink carrier with the higher priority is selected for transmission, and the CSI feedback information of the downlink carrier with the lower priority is discarded, until the total number of bits of the CSI feedback information does not exceed the CSI feedback bit. Number threshold
  • the priority of the downlink carrier is defined by the downlink carrier number (Index), for example, the downlink carrier with the smallest downlink carrier number is the highest priority; or the downlink carrier priority is predefined in the system (that is, the UE and the base station pre-agreed Carrier priority); or, configure carrier priority through higher layer signaling or PDCCH signaling;
  • Index the downlink carrier number
  • the downlink carrier priority is predefined in the system (that is, the UE and the base station pre-agreed Carrier priority); or, configure carrier priority through higher layer signaling or PDCCH signaling
  • Method 2 According to the priority of the CSI reporting type, the CSI feedback information of the downlink carrier with the CSI reporting type with the higher priority is selected, and the CSI feedback information of the downlink carrier with the lower priority CSI reporting type is discarded.
  • the total number of bits of the CSI feedback information does not exceed the CSI feedback bit number threshold;
  • the priority is defined according to the CSI information type transmitted in the reporting type; or the priority of the reporting type is predefined in the system (that is, the priority of the reporting type is pre-agreed by the UE and the base station); or, through high layer signaling or The PDCCH signaling configuration report type priority;
  • the reporting type containing the RI information has the highest priority (such as Type 3, 5, 6), the second is the reporting type including the wideband CQI (such as Type 2, 2b, 2c, 4), and the second is the reporting type including the sub-band CQI (such as Type 1, 1a) or only the reporting type of PMI (such as Type 2a);
  • the priority of the CSI reporting type in the system is: Types 3, 5, 6, 2a has the highest priority, followed by Types 2, 2b, 2c, 4, and the lowest priority is Types 1, la;
  • Method 3 Method 1 is combined with Method 2, and firstly, according to the method 2, the CSI feedback information of the downlink carrier having the low priority class 4 ⁇ is discarded according to the priority of the CSI reporting type, when the CSI of the remaining downlink carrier is 4 ⁇ If the total number of bits of the CSI feedback information of the remaining downlink carriers exceeds the CSI feedback bit number threshold, the CSI of the downlink carrier with the lower carrier priority in the remaining downlink carriers is further discarded according to the method 1 Feedback information, until the total number of bits of the CSI feedback information does not exceed the CSI feedback bit number threshold;
  • Method 4 The method 1 is combined with the method 2, and the downlink carrier that needs to be fed back to the CSI is divided into several groups according to the priority of the CSI reporting type according to the method 2, for example, the reporting type is Types 3, 5 according to the priority of the reporting type.
  • the downlink carriers are grouped into one group, and the downlink carriers of the Types 2, 2b, 2c, and 4 are grouped into one group, and the downlink carriers of the Types 1 and 1 are grouped into one group;
  • the method 1 is to discard the CSI feedback information of the downlink carrier with a lower carrier priority in each group until the total number of bits of the CSI feedback information does not exceed the threshold of the CSI feedback bit number; wherein the method 1 is used for each group, and the specific performance is as follows:
  • the priority of the CSI reporting type is from low to high. Step 1 is used for the lower downlink carrier group of the plurality of downlink carrier groups after the above-mentioned grouping (that is, according to method 2, according to the CSI reporting type.
  • the downlink carrier Level, grouping the downlink carrier, and selecting a downlink carrier group corresponding to the CSI reporting type of the low priority; and then prioritizing the carrier in the group according to the method 1
  • the CSI feedback information of the lower-level downlink carrier is discarded, and the loop is repeated until the total number of bits of the CSI feedback information does not exceed the CSI feedback bit number threshold); or, the method 1 is used for the plurality of downlink carrier groups after the grouping (ie, First, according to method 2, according to the CSI type, the downlink carrier is grouped; then, for each downlink carrier group, according to method 1, the CSI feedback information of the downlink carrier with lower carrier priority in each group is discarded.
  • the feedback bit number threshold may be further used in the method 2, according to the priority of each group of carriers, preferentially discarding the CSI feedback information of the downlink carrier having the lower priority type, until the total of the CSI feedback information The number of bits does not exceed the CSI feedback bit number threshold;
  • the CSI includes one or any combination of CQI, PMI, RI, and PTI. It should be noted that the foregoing CSI generally refers to a periodic CSI. It should be noted that when there are both ACK/NACK and/or Scheduling Request (SR) in the uplink subframe in which the CSI is transmitted, the above method is also applicable, and can support multi-carrier CSI feedback information and ACK/NACK and / or SR joint encoding transmission, such as PUCCH format 2/2a/2b/3, or extended PUCCH format 3, or other schemes.
  • SR Scheduling Request
  • the determining of the CSI feedback bit number threshold may be determined based on the ACK/NACK and/or the number of feedback bits K of the SR transmitted simultaneously with the CSI feedback information, that is, the maximum capacity of the scheme for transmitting CSI is A, then the CSI feedback bit
  • the number threshold can be any positive integer that does not exceed the AK bit. For example, if there are both CSI and ACK/NACK in the current uplink subframe, and the number of ACK/NACK feedback bits defined in the system to be simultaneously transmitted with the CSI does not exceed 5 bits, if the current subframe is not an SR subframe, it is not used.
  • RRC Radio Resource Control
  • MAC Media Access Control
  • the CSI feedback bit number threshold may be determined according to the PUCCH format used by the UE to transmit the CSI, or may be determined in advance according to the relevant configuration of the PUSCH or dynamically notified by the high layer signaling/PDCCH signaling.
  • the multi-carrier CSI transmission method in the foregoing LTE-A CA system can also be applied to a Coordinated Multi-Point Transmission (CoMP) scenario, and CSIs of multiple transmission points that need to be fed back in CoMP transmission. It can be equivalent to the CSI of the above multiple carriers.
  • CoMP Coordinated Multi-Point Transmission
  • a terminal is also provided in the embodiment of the present invention.
  • the principle of the terminal is similar to the CSI transmission method in the embodiment of the present invention. Therefore, the implementation of the terminal may refer to the implementation of the method, and the repeated description is not repeated.
  • an embodiment of the present invention further provides a terminal, where the terminal includes:
  • a determining module 40 configured to determine a CSI feedback bit number threshold in a current uplink subframe, and determine a total CSI feedback bit number of multiple downlink carriers that need to feed back CSI in the current uplink subframe;
  • the processing module 41 is configured to determine whether the total CSI feedback bit number determined by the determining module is greater than the CSI feedback bit number threshold; if yes, compress the CSI that needs to be fed back in the current uplink subframe, and The compressed CSI is fed back to the base station in the current uplink subframe; otherwise, the CSI of the multiple downlink carriers is simultaneously fed back to the base station in the current uplink subframe.
  • determining module 40 is specifically configured to:
  • the CSI feedback ratio threshold determined according to the physical uplink control channel PUCCH format format used by the CSI; or
  • Determining the CSI feedback according to the PUCCH format used for simultaneous transmission of the CSI with the acknowledgement ACK/negative acknowledgement NACK and/or the scheduling request SR and the number of bits of the ACK/NACK and/or SR simultaneously transmitted with the CSI in the same uplink subframe The number of bits threshold.
  • determining module 40 is further configured to:
  • the threshold of the CSI feedback bit number is not more than any integer of the maximum number of transmission bits A of the PUCCH format used for transmitting the CSI;
  • the CSI feedback bit number threshold is any integer that does not exceed AK bits, where A is the maximum number of transmission bits of the PUCCH format used for CSI and ACK/NACK and/or SR simultaneous transmission, and K is the same as CSI.
  • processing module 41 is configured to:
  • the CSI of the downlink carriers of the plurality of downlink carriers is discarded, so that the total number of bits of the remaining CSIs is not greater than the CSI feedback bit number threshold, and the remaining CSI is used as the compressed CSI.
  • processing module 41 is configured to:
  • the priority of each downlink carrier in the plurality of downlink carriers of the CSI is fed back in the current uplink subframe according to the need, and the downlink carrier priorities are from low to high, and multiple downlink carriers that need to feed back CSI in the current uplink subframe are required.
  • the CSI of the low-priority downlink carrier is discarded, so that the total number of bits of the remaining CSI is not greater than the threshold of the CSI feedback bit number, and the remaining CSI is used as the compressed CSI; or
  • the priorities of the CSIs of the downlink carriers are in the order of the CSI reporting type from low to high, and need to be in the current uplink subframe.
  • the CSI of the downlink carrier with the low priority CSI reporting type of the multiple downlink carriers of the CSI is discarded, so that the total number of bits of the remaining CSI is not greater than the threshold of the CSI feedback bit number, and the remaining CSI is used as the compressed CSI. If the rest The CSI on the downlink carrier belongs to the same priority, and the total number of bits of the CSI of the remaining downlink carriers still exceeds the CSI feedback bit threshold, and further according to the priority of the remaining downlink carriers.
  • the priority of the CSI reporting type of each downlink carrier of the multiple downlink carriers that feed back the CSI in the current uplink subframe is required to be the same CSI in the multiple downlink carriers that need to feed back the CSI in the current uplink subframe.
  • the downlink carriers of the type priority are grouped into one group, and the downlink carriers in the downlink carrier group corresponding to the priority of each CSI reporting type are based on the priority of the downlink carrier, and the low priority is in the order of the downlink carrier priority from low to high.
  • the CSI of the downlink carrier of the level is discarded, so that the total number of bits of the remaining CSI is not greater than the threshold of the CSI feedback bit number, and the remaining CSI is taken as the compressed CSI; if each CSI is on the type priority If there is at most one downlink carrier in the corresponding downlink carrier group, and the total number of CSIs of the remaining downlink carriers still exceeds the CSI feedback bit threshold, the CSI reporting type priority is further according to the priority of the CSI reporting type.
  • the priority of the CSI reporting type of each downlink carrier is divided into a group, and the downlink carriers having the same CSI reporting type priority among the multiple downlink carriers that need to feed back the CSI in the current uplink subframe are grouped according to the CSI reporting type.
  • the downlink carrier group corresponding to the 4 ⁇ type on the low priority CSI is selected in the order of the low priority to the high priority, and the downlink carrier in the downlink carrier group corresponding to the 4 ⁇ type on the low priority CSI is based on the priority of the downlink carrier.
  • the CSI of the low-priority downlink carrier is discarded in the order of the downlink carrier priority from low to high, so that the total number of bits of the remaining CSI is not greater than the threshold of the CSI feedback bit number, and the remaining CSI is used as the compressed CSI.
  • processing module 41 is further configured to:
  • processing module 41 is further configured to:
  • each downlink carrier of the multiple downlink carriers The priority of the CSI report type.
  • processing module 41 is configured to: feed back CSI to the base station by using a PUCCH or a physical uplink shared channel PUSCH.
  • the PUCCH format is: PUCCH format 2, or PUCCH format 2a, or PUCCH format 2b, or PUCCH format 3.
  • the CSI includes: one or any combination of channel shield quantity indication CQI information, precoding matrix indication PMI information, rank indication RI information, precoding type indication PTI information.
  • a base station is also provided in the embodiment of the present invention.
  • the principle of the problem solved by the base station is similar to the CSI receiving method in the embodiment of the present invention. Therefore, the implementation of the base station may refer to the implementation of the method, and the repeated description is not repeated.
  • an embodiment of the present invention further provides a base station, where the base station includes:
  • a determining module 50 configured to determine a CSI feedback bit number threshold of the terminal in the current uplink subframe, and determine a total CSI bit number of the multiple downlink carriers that the terminal needs to feed back CSI in the current uplink subframe;
  • the determining module 51 is configured to determine whether the total CSI bit number determined by the determining module is greater than the CSI feedback bit number threshold; if yes, determining that the terminal compresses the CSI fed back in the current subframe And determining, by the terminal, the number of CSI bits actually fed back by the terminal in the current uplink subframe is the total number of CSI bits after the compression; otherwise, determining that the number of CSI bits actually received by the terminal in the current uplink subframe is the total Number of CSI bits;
  • the receiving module 52 is configured to receive the CSI fed back by the terminal according to the number of CSI bits actually measured by the terminal in the current uplink subframe determined by the determining module.
  • determining module 50 is specifically configured to:
  • the CSI feedback bit number threshold Determining, according to a pre-arrangement of the base station and the terminal, the CSI feedback bit number threshold; or determining a threshold of the CSI feedback bit number according to a physical uplink control channel PUCCH format format used by the terminal to transmit CSI; or ,
  • the used PUCCH format and the number of bits of the ACK/NACK and/or SR transmitted simultaneously with the CSI in the same uplink subframe Determining the CSI feedback bit number threshold.
  • determining module 50 is further configured to:
  • the threshold of the CSI feedback bit number is not more than any integer of the maximum number of transmission bits A of the PUCCH format used for transmitting the CSI;
  • the CSI feedback bit number threshold is any integer that does not exceed AK bits, where A is the maximum number of transmission bits of the PUCCH format used for CSI and ACK/NACK and/or SR simultaneous transmission, and K is the same as CSI The number of ACK/NACK and/or SR bits transmitted simultaneously in one uplink subframe.
  • the determining module 51 is configured to:
  • the terminal needs to be in the current uplink subframe according to the priority of each of the downlink carriers that are required to feed back the CSI in the current uplink subframe and/or the priority of the CSI reporting type of each downlink carrier.
  • the CSI of the downlink carrier of the plurality of downlink carriers of the CSI is discarded, so that the total number of CSI bits of the remaining downlink carriers is not greater than the CSI feedback bit number threshold, and the total number of CSI bits of the remaining downlink carriers is used.
  • the total number of CSI bits after compression is used.
  • the determining module 51 is configured to:
  • the terminal needs to feed back the priority of each downlink carrier in the plurality of downlink carriers of the CSI in the current uplink subframe, and the terminal needs to feed back in the current uplink subframe according to the downlink carrier priority from low to high.
  • the CSI of the low-priority downlink carriers of the multiple downlink carriers of the CSI is discarded, so that the total number of bits of the remaining CSI is not greater than the CSI feedback bit number threshold, and the remaining CSI total bits are used as the compressed CSI total bits. Number; or,
  • the terminal needs to be in the current order according to the CSI reporting type priority from low to high.
  • the CSI of the downlink carrier with the low priority CSI reporting type among the multiple downlink carriers that feed back the CSI in the uplink subframe is discarded, so that the total number of bits of the remaining CSI is not greater than the threshold of the CSI feedback bit number, and the remaining CSI total
  • the number of bits is the total number of bits of the CSI after compression; if the CSI reporting type of the remaining downlink carriers belongs to the same priority, and the total number of bits of the CSI of the remaining downlink carriers still exceeds the CSI feedback bit threshold, then further Determining, according to the priority of the remaining downlink carriers, the CSI of the low-priority downlink carriers in the remaining downlink carriers in order of the downlink carrier priorities from low to high, so that the total number of remaining CSIs is again Not more than the CSI
  • the downlink carriers of the same CSI reporting type priority are grouped into groups, and the downlink carriers in the downlink carrier group corresponding to each CSI reporting type priority are according to the priority of the downlink carrier, and the downlink carrier priorities are in descending order.
  • the priority of the ⁇ type according to the order of the priority of the type 4 CXI from low to high, having the remaining downlink carriers
  • the CSI of the 4 ⁇ type downlink carrier on the priority CSI is discarded, so that the total number of remaining CSI bits is not greater than the CSI feedback bit number threshold, and the remaining remaining CSI total bits are used as the compressed CSI total number of bits.
  • the downlink carriers having the same CSI priority type in the plurality of downlink carriers that need to feed back the CSI in the current uplink subframe are grouped into one group, and the priority of the CSI reporting type is from low to high.
  • the downlink carrier group corresponding to the low priority CSI type the downlink carrier in the downlink carrier group corresponding to the low priority CSI type according to the priority of the downlink carrier, according to the downlink carrier
  • the CSI of the low priority downlink carrier is discarded in the order of priority from low to high, such that the total number of bits of the remaining CSI is not greater than the CSI feedback bit number threshold, and the remaining CSI is taken as the compressed CSI.
  • the determining module 51 is further configured to:
  • the determining module 51 is further configured to:
  • each downlink carrier of the multiple downlink carriers Determining, according to configuration information in the high layer signaling or the PDCCH signaling, each downlink carrier of the multiple downlink carriers
  • the receiving module 52 is configured to: receive CSI by using a PUCCH or a physical uplink shared channel PUSCH.
  • the PUCCH format is: PUCCH format 2, or PUCCH format 2a, or PUCCH format 2b, or PUCCH format 3.
  • the CSI includes: one or any combination of channel shield quantity indication CQI information, precoding matrix indication PMI information, rank indication RI information, precoding type indication PTI information.
  • the beneficial effects of the present invention include:
  • the terminal determines a CSI feedback bit threshold value in the current uplink subframe, and a total CSI feedback bit number of multiple downlink carriers that need to feed back CSI in the current uplink subframe, and then determines the Whether the total CSI feedback bit number is greater than the CSI feedback bit number threshold; if yes, compressing the CSI that needs to be fed back in the current uplink subframe, and feeding back the compressed CSI to the base station in the current uplink subframe; otherwise, The CSI of the multiple downlink carriers is fed back to the base station in the current uplink subframe.
  • the present invention can adaptively determine whether the CSI needs to be compressed according to whether the total number of bits of the CSI of the multi-carrier exceeds the upper limit of the CSI transmission of the transmission scheme, and transmit as many downlinks as possible without exceeding the CSI transmission upper limit.
  • the CSI of the carrier is used to improve the transmission efficiency of the CSI, so that the base station can obtain the CSI of the multi-carrier in time, and improve the accuracy of the downlink scheduling.
  • These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de la présente invention décrivent un procédé et un dispositif qui sont destinés à la transmission des informations d'état de canal (CSI), qui se rapportent au domaine technologique de la communication sans fil, et qui sont utilisés pour le renvoi de CSI de plusieurs porteuses de liaison descendante en même temps, afin d'accroître la précision de l'ordonnancement en liaison descendante. Selon la présente invention, un équipement utilisateur (UE) détermine un seuil de nombre de bits de renvoi de CSI du secteur de trame de liaison montante en cours, ainsi que le nombre de bits de renvoi de CSI total des porteuses de liaison descendante qui exigent le renvoi de CSI dans le secteur de trame de liaison montante en cours. Ledit UE décide si le nombre de bits de renvoi de CSI total est supérieur au seuil de nombre de bits de renvoi de CSI, et, si oui, les CSI à renvoyer dans le secteur de trame de liaison montante en cours sont compressées tandis que, dans le cas contraire, les CSI desdites porteuses de liaison descendante sont renvoyées à une station de base (BS) dans le secteur de trame de liaison montante en cours. La précision de l'ordonnancement en liaison descendante est bien entendu améliorée dans la présente invention.
PCT/CN2012/078696 2011-07-19 2012-07-16 Procédé et dispositif destinés à la transmission d'informations d'état de canal Ceased WO2013010468A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110202564.X 2011-07-19
CN201110202564XA CN102255694A (zh) 2011-07-19 2011-07-19 信道状态信息传输方法和设备

Publications (1)

Publication Number Publication Date
WO2013010468A1 true WO2013010468A1 (fr) 2013-01-24

Family

ID=44982701

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/078696 Ceased WO2013010468A1 (fr) 2011-07-19 2012-07-16 Procédé et dispositif destinés à la transmission d'informations d'état de canal

Country Status (2)

Country Link
CN (1) CN102255694A (fr)
WO (1) WO2013010468A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019192013A1 (fr) * 2018-04-06 2019-10-10 Qualcomm Incorporated Déclenchement et rapport d'informations d'état de canal non périodiques dans des communications sans fil

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN103188057B (zh) * 2011-12-31 2016-08-03 中兴通讯股份有限公司 一种基于门限判决的自适应反馈方法及系统
CN103209483B (zh) 2012-01-12 2015-09-09 华为技术有限公司 传输上行控制信息的方法、用户设备和基站
WO2013113142A1 (fr) * 2012-01-30 2013-08-08 Renesas Mobile Corporation Procédé et appareil pour fournir des informations de commande de liaison montante
CN103427961A (zh) * 2012-05-17 2013-12-04 华为技术有限公司 上行控制信息发送方法及用户设备
WO2014000208A1 (fr) * 2012-06-28 2014-01-03 华为技术有限公司 Procédé et terminal pour rapporter des informations d'état de canal
CN103546249B (zh) * 2012-07-09 2016-09-14 电信科学技术研究院 一种周期csi上报方法及终端
EP2880796A4 (fr) * 2012-08-01 2016-03-30 Nokia Solutions & Networks Oy Volume configurable d'une « requête de csi » pour le déclenchement d'un retour de csi apériodique
JP5932554B2 (ja) * 2012-08-02 2016-06-08 株式会社Ｎｔｔドコモ 無線通信方法、無線通信システム、無線基地局及びユーザ端末
CN108155977B (zh) * 2012-08-03 2021-02-05 苹果公司 用于传送上行控制信息的装置及计算机可读介质
WO2014047909A1 (fr) * 2012-09-28 2014-04-03 华为技术有限公司 Procédé et dispositif de traitement par rétroaction csi apériodique
WO2014047903A1 (fr) * 2012-09-28 2014-04-03 华为技术有限公司 Procédé de traitement de processus d'informations d'état de canal, dispositif de réseau et équipement utilisateur
CN102904696B (zh) * 2012-10-10 2015-08-05 大唐移动通信设备有限公司 一种下行数据传输结果的上报和确定的方法、设备
CN107409321A (zh) * 2015-01-28 2017-11-28 夏普株式会社 终端装置、基站装置、通信方法以及集成电路
EP3264650A4 (fr) * 2015-03-20 2018-04-04 Huawei Technologies Co., Ltd. Procédé et dispositif pour rapporter et recevoir des informations d'état de canal (csi)
CN106559113B (zh) * 2015-09-25 2022-07-29 中兴通讯股份有限公司 信道信息测量导频资源的子集选择方法、终端和基站
WO2018227614A1 (fr) 2017-06-16 2018-12-20 Qualcomm Incorporated Rétroaction d'informations d'état de canal pour signalisation de commande de liaison montante flexible
CN109600210B (zh) 2017-09-30 2024-07-05 华为技术有限公司 数据传输方法、终端设备以及网络设备
CN112703709A (zh) * 2018-07-12 2021-04-23 株式会社Ntt都科摩 用户终端以及基站
WO2020029287A1 (fr) * 2018-08-10 2020-02-13 Oppo广东移动通信有限公司 Procédé de rétroaction d'informations, ainsi que terminal, puce et support d'informations
CN114157400B (zh) * 2019-02-15 2024-04-16 华为技术有限公司 一种码本的处理方法及装置
CN112583464B (zh) * 2019-09-30 2022-06-10 大唐移动通信设备有限公司 一种信息传输方法、装置及通信设备
CN113938952B (zh) * 2021-10-20 2023-10-20 澳门大学 信道状态信息压缩方法、重建方法、装置及计算机设备
EP4420250A4 (fr) * 2021-10-20 2025-10-08 Nokia Solutions & Networks Oy Amélioration d'une formation de faisceau basée sur l'état d'un canal
CN117411590B (zh) * 2022-07-08 2025-12-02 中兴通讯股份有限公司 信息传输方法、设备和存储介质
CN121620892A (zh) * 2023-07-28 2026-03-06 Oppo广东移动通信有限公司 信息压缩方法及装置、终端设备、网络设备
CN119544160B (zh) * 2023-08-28 2026-04-24 中国移动通信有限公司研究院 信息传输方法、装置、终端、网络设备及存储介质
CN119815391A (zh) * 2024-04-12 2025-04-11 荣耀终端股份有限公司 一种被用于无线通信的节点中的csi测量的方法和装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100008431A1 (en) * 2008-07-11 2010-01-14 Industrial Technology Research Institute Apparatus and method for channel state information feedback
CN101873159A (zh) * 2009-04-21 2010-10-27 华为技术有限公司 一种多输入多输出下行传输控制方法及装置
CN101969363A (zh) * 2010-09-30 2011-02-09 中兴通讯股份有限公司 信道状态信息反馈方法及终端
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

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR073833A1 (es) * 2008-10-20 2010-12-01 Interdigital Patent Holdings Metodos para el control ascendente de transmision de informacion para agregar ona portadora
CN101873206B (zh) * 2009-04-27 2013-07-31 电信科学技术研究院 一种信道信息反馈方法、装置和系统
EP2522095A2 (fr) * 2010-01-08 2012-11-14 InterDigital Patent Holdings, Inc. Transmission d'informations d'état de canal pour de multiples porteuses
CN102111254B (zh) * 2010-04-30 2014-11-19 电信科学技术研究院 一种反馈信息的发送方法及用户设备
CN102104458B (zh) * 2010-07-02 2013-07-31 电信科学技术研究院 上行控制信息的传输方法和设备
CN102013954B (zh) * 2010-07-08 2011-12-07 华为技术有限公司 信道状态信息上报方法和用户设备
CN102082636B (zh) * 2010-08-16 2013-05-08 电信科学技术研究院 一种信道状态信息csi反馈指示方法和基站及系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100008431A1 (en) * 2008-07-11 2010-01-14 Industrial Technology Research Institute Apparatus and method for channel state information feedback
CN101873159A (zh) * 2009-04-21 2010-10-27 华为技术有限公司 一种多输入多输出下行传输控制方法及装置
CN101969363A (zh) * 2010-09-30 2011-02-09 中兴通讯股份有限公司 信道状态信息反馈方法及终端
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019192013A1 (fr) * 2018-04-06 2019-10-10 Qualcomm Incorporated Déclenchement et rapport d'informations d'état de canal non périodiques dans des communications sans fil
US11659555B2 (en) 2018-04-06 2023-05-23 Qualcomm Incorporated Non-periodic channel state information triggering and reporting in wireless communications

Also Published As

Publication number Publication date
CN102255694A (zh) 2011-11-23

Similar Documents

Publication Publication Date Title
CN113645660B (zh) 使用上行链路空间复用和上行链路跳过的用户设备和方法
JP5705965B2 (ja) 複数のキャリアについての制御情報のフィードバック
JP4932052B2 (ja) チャネル品質インジケータの独立した送信をトリガーする制御チャネルシグナリング
WO2013010439A1 (fr) Procédé et dispositif de transmission d'informations d'état de canal
JP6019091B2 (ja) アップリンク制御情報のためのユーザ機器、基地局装置、および集積回路
CN102972078B (zh) 上行控制信息传输
CN102255694A (zh) 信道状态信息传输方法和设备
JP6338527B2 (ja) フィードバック情報の転送方法、システム及び設備
CN103384183B (zh) 一种上行控制信息传输方法及装置
AU2010317260B2 (en) Method and apparatus for transmitting the semi-persistent scheduling data method and apparatus for transmitting the semi-persistent scheduling data
CN103580810B (zh) 信道状态信息的发送方法及装置
WO2011098047A1 (fr) Procédé et dispositif de mise en place d'un service de programmation semi-persistante ou analogue
CN103581891A (zh) 信息的处理方法及装置
JP2013534392A (ja) マルチキャリア動作のためのａｃｋ／ｎａｃｋ送信
CN102013954A (zh) 信道状态信息上报和获取方法、基站和用户设备
WO2014180188A1 (fr) Procede de planification de multiples sous-trames, station de base, terminal et systeme
CN103299695A (zh) 信道状态信息的传输方法、基站和用户设备
JP2015501610A5 (fr)
WO2012155499A1 (fr) Procédé pour la transmission d'informations d'état de canal et équipement utilisateur
CN102377539B (zh) 反馈及获取多个cc的csi的方法、ue及基站
CN119452714A (zh) 方法、通信装置和基础设施设备
WO2011145454A1 (fr) Système de communications mobiles, dispositif station de base, dispositif station mobile et procédé de communications

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12815317

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12815317

Country of ref document: EP

Kind code of ref document: A1