WO2014019174A1 - Procédé et système de retour d'informations basés sur une technologie de transmission multi-flux - Google Patents

Procédé et système de retour d'informations basés sur une technologie de transmission multi-flux Download PDF

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Publication number
WO2014019174A1
WO2014019174A1 PCT/CN2012/079512 CN2012079512W WO2014019174A1 WO 2014019174 A1 WO2014019174 A1 WO 2014019174A1 CN 2012079512 W CN2012079512 W CN 2012079512W WO 2014019174 A1 WO2014019174 A1 WO 2014019174A1
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WIPO (PCT)
Prior art keywords
timing reference
cell
terminal device
channel coding
group
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PCT/CN2012/079512
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English (en)
Chinese (zh)
Inventor
徐文颖
马雪利
汪凡
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.)
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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/CN2012/079512 priority Critical patent/WO2014019174A1/fr
Priority to CN201280049525.3A priority patent/CN103891190B/zh
Publication of WO2014019174A1 publication Critical patent/WO2014019174A1/fr

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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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to an information feedback method and system based on multi-stream transmission technology.
  • MF-Tx Multiflow Transmission
  • UE User Equipment
  • the so-called MF-Tx mainly refers to the use of cooperation between multiple cells in a base station (NodeB) or multiple cells in multiple base station devices to transmit to terminal devices in overlapping areas of these cells.
  • Downlink data thereby increasing the peak rate when the terminal device receives downlink data.
  • SF-DC Single Carrier Dual Cell
  • the dual cells in the same base station device are of the same frequency and have different coverage characteristics. As shown in FIG.
  • cell 1 and The coverage of the cell 2 has an overlapping area.
  • the terminal device initiates a service in an overlapping area covered by the dual cell, the terminal device can perform data interaction with the associated base station device through the two cells at the same time, thereby increasing the peak rate.
  • the terminal device since the cell that transmits data to the terminal device is changed from the original one, it is convenient for the cell control and management.
  • attributes such as a primary cell and a secondary cell are defined, so that the terminal device can determine the feedback information to be sent to the base station device to the terminal device according to the attribute of the cell in the process of performing data interaction with the base station device.
  • Channel coding order such as:
  • cell 1 is a serving HS-DSCH cell
  • cell 2 is an assisting serving HS-DSCH cell.
  • the channel coding sequence of the terminal device is: feedback information corresponding to the cell 1 feedback information corresponding to the cell 2, for example, the feedback information corresponding to the cell 1 is CQI0, and the feedback information corresponding to the cell 2 is CQI1.
  • the base station device After receiving the feedback information sent by the terminal device, the base station device performs decoding, and determines, according to the channel coding sequence of the terminal device, a CQI (Channel Quality Indicator) and a HARQ-ACK (Hybrid Automatic Repeat Request) encoded by the terminal device. - Acknowledgement, hybrid automatic repeat request - confirmation, and other information corresponding to the cell.
  • CQI Channel Quality Indicator
  • HARQ-ACK Hybrid Automatic Repeat Request
  • the location of the user when using the terminal device is often not fixed. As the terminal device moves within the coverage of the cell, the attributes of the cells covering the terminal device often switch, for example:
  • the serving cell is the cell 1 and the secondary serving cell is the cell 2, and due to the change of the location of the terminal device, at the second moment, the serving cell is switched from the cell 1 to the cell 2, and the secondary serving cell is switched from the cell 2 to the cell 2 Cell 1.
  • the channel coding sequence of the terminal device becomes: 1. Feedback information corresponding to the cell 2 - 2, feedback information corresponding to the cell 1, for example: feedback information corresponding to the cell 2 For CQI0, cell 1 pair The feedback should be CQI1.
  • the base station device also needs to switch the channel coding sequence according to the same as that of the terminal device, so as to ensure that the base station device correctly determines the cell corresponding to the information encoded by the terminal device after decoding.
  • the terminal device may still need to feed back information to the base station device.
  • the channel coding sequence of the feedback information of the terminal device may be different from the channel coding sequence according to the base station device, so that the base station device cannot correctly determine the terminal.
  • the cell corresponding to the information encoded by the device has problems such as high-level data retransmission, repeated transmission, and improper scheduling caused by the disorder of feedback information.
  • the base station device often needs to re-transmit additional system resources.
  • the data for example: The base station device will re-send the data that the terminal device has correctly received to the terminal device, thereby causing waste of system resources.
  • An embodiment of the present invention provides an information feedback method and system based on a multi-stream transmission technology, which can reduce high-level data caused by out-of-order feedback information in a process of interacting with feedback information between a terminal device and a base station device during cell handover. The probability of retransmission, repeated transmission, and improper scheduling, thereby saving system resources.
  • the embodiment of the present invention adopts the following technical solutions:
  • an embodiment of the present invention provides an information feedback method, where the method is based on a multi-stream transmission technology, including: a terminal device identifying a type of a cell currently in existence, where the type of the cell includes a timing reference cell and a non-timing reference cell; Determining a channel coding sequence according to a type of a cell in which the terminal device is currently located, where the channel coding sequence includes: the timing reference cell is preferentially arranged in front of the non-timed reference cell;
  • the information to be sent includes: feedback information corresponding to each cell where the terminal device is currently located;
  • the channel-coded information to be transmitted is transmitted to the base station device.
  • an embodiment of the present invention provides an information feedback method, which is based on a multi-stream transmission technology, and includes:
  • the base station device receives the channel-encoded feedback information sent by the terminal device, where the channel-encoded information includes: feedback information corresponding to each cell where the terminal device is currently located;
  • Channel decoding the feedback information the channel decoding being an inverse of the channel coding
  • Timing refers to the front of the cell.
  • an embodiment of the present invention provides a terminal device, where the terminal device is based on a multi-stream transmission technology, and includes:
  • An identification module configured to identify a type of a cell currently in existence, where the type of the cell includes a timing reference cell and a non-timed reference cell; a determining module, configured to determine a channel coding sequence according to a type of a cell in which the terminal device is currently located, where the channel coding sequence includes: the timing reference cell is preferentially arranged in front of the non-timed reference cell;
  • an encoding module configured to perform channel coding on the information to be sent according to the channel coding sequence, where the information to be sent includes: feedback information corresponding to each cell where the terminal device is currently located;
  • a sending module configured to send the channel-coded information to be sent to the base station device.
  • an embodiment of the present invention provides a base station device, where the base station device is based on a multi-stream transmission technology, and includes:
  • the receiving module is configured to receive channel-coded information that is sent by the terminal device, where the channel-coded information includes: feedback information corresponding to each cell where the terminal device is currently located;
  • a decoding module configured to perform channel decoding on the feedback information, where the channel decoding is an inverse process of the channel coding
  • An analysis module configured to determine, according to a channel coding sequence, feedback information corresponding to a cell where the terminal device is located, where the channel coding sequence is the same as a channel coding sequence followed by the terminal device for performing channel coding, that is, the following:
  • the cells are preferentially arranged in front of the non-timed reference cells.
  • an embodiment of the present invention provides a base station device, where the base station device is based on a multi-stream transmission technology, including: the terminal device, identifying a type of a current cell, where the type of the cell includes a timing reference cell and a non- The channel is referenced to the cell, and the channel coding sequence is determined according to the type of the cell in which the terminal device is currently located.
  • the channel coding sequence includes: the timing reference cell is preferentially arranged in front of the non-timing reference cell, and then treated according to the channel coding sequence.
  • the information to be transmitted is channel-coded, and the information to be sent includes: feedback information corresponding to each cell currently in which the terminal device is currently located, and finally, the information to be transmitted that has been channel-coded is sent to the base station device; And receiving, by the terminal device, the channel-coded information, where the channel-encoded information includes: feedback information corresponding to each cell where the terminal device is currently located, and then performing channel decoding on the feedback information, where Channel decoding is the inverse of the channel coding And finally determining the feedback information corresponding to the cell where the terminal device is located according to the channel coding sequence, where the channel coding sequence is the same as the channel coding sequence followed by the terminal device when performing channel coding, that is, the following: Arranged in front of the non-timed reference cell.
  • the information feedback method and system based on the multi-stream transmission technology provided by the embodiment of the present invention can use the timing reference cell/non-timed reference cell as the terminal device to determine the attribute of the channel coding sequence of the cell feedback information.
  • the present invention can reduce the terminal device to the cell handover. In the process of information feedback of the base station equipment, the probability of high-level data retransmission, repeated transmission, and improper scheduling caused by the disorder of feedback information occurs, and system resources are saved.
  • FIG. 1 is a schematic structural diagram of a networking based on a multi-stream transmission technology in the prior art
  • FIG. 2 is a flowchart of an information feedback method according to Embodiment 1 of the present invention
  • FIG. 3a is a flowchart of an information feedback method according to Embodiment 2 of the present invention.
  • FIG. 3 is a flowchart of another information feedback method according to Embodiment 2 of the present invention
  • FIG. 3 is a flowchart of still another information feedback method according to Embodiment 2 of the present invention
  • FIG. 4 is a third embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a terminal device according to Embodiment 4 of the present invention.
  • FIG. 6a is a schematic structural diagram of a terminal device according to Embodiment 5 of the present invention.
  • FIG. 6 is a schematic structural diagram of another terminal device according to Embodiment 5 of the present invention
  • FIG. 7 is a schematic structural diagram of a base station device according to Embodiment 6 of the present invention.
  • FIG. 8 is a schematic structural diagram of an information feedback system based on multi-stream transmission technology according to Embodiment 7 of the present invention.
  • An embodiment of the present invention provides an information feedback method, as shown in FIG. 2, including:
  • This embodiment is based on a multi-stream transmission technique.
  • the terminal device identifies the type of the current cell.
  • the type of the cell includes a timing reference cell and an untimed reference cell.
  • the terminal device can identify, by using existing technical means, whether the current cell of the terminal device is a timed reference cell or a non-timed reference cell, for example: the terminal device can receive an RNC (Radio Network Controller, wireless) in the existing communication system.
  • the network controller sends a signaling indication, and according to the indication, it can be known which cell is a timing reference cell, and the others are non-timed reference cells.
  • S202 Determine a channel coding sequence according to a type of a cell where the terminal device is currently located.
  • the channel coding sequence includes: the timing reference cell is preferentially arranged in the non-timed reference cell. Front.
  • Table 1 shows the existing 3GPP protocol, in the SF-DC+ MIMO (Multiple Input Multiple Output) scenario in MF-Tx (that is, in this scenario, there are two cells and The terminal device performs data interaction, one of which is the channel coding order of the serv i n g HS-DSCH cell, and the other is the assting serving HS-DSCH cell, and no cell is in the MIM0 mode.
  • SF-DC+ MIMO Multiple Input Multiple Output
  • AO and CQIO represent the HARQ-ACK information and CQI information of the timing reference cell
  • ⁇ , and “CQI1” indicate the HARQ-ACK information and CQI information of the non-timing reference cell. That is, the channel coding order The method is: first encoding the HARQ-ACK information and the CQI information of the timing reference cell, and then encoding the HARQ-ACK information and the CQI information of the non-timed reference cell.
  • Table 2 shows the existing 3GPP protocol in the SF-DC+ MIMO scenario in the MF-Tx (that is, in this scenario, two cells coexist with the terminal device for data interaction, one of which is the serving HS- DSCH cell, the other is the assting serving HS-DSCH cell, and The channel coding order of at least one cell in MIMO mode).
  • AO and PCI/CQIO represent the HARQ-ACK information and PCI/CQI information of the timing reference cell
  • A1 and “PCI/CQI1” indicate the HARQ-ACK information and PCI of the non-timed reference cell.
  • /CQI information That is, the channel coding sequence is: first encoding the HARQ-ACK information and the PCI/CQI information of the reference reference cell, and then encoding the HARQ-ACK information and the PCI/CQI information of the non-timing reference cell.
  • the information to be sent includes: feedback information corresponding to each cell where the terminal device is currently located, for example, HARQ-ACK information and CQI information.
  • channel coding of the information to be sent by the terminal device according to the channel coding sequence may be any manner well known to those skilled in the art, and details are not described herein again.
  • S204 Send the channel-coded information to be sent to the base station device.
  • the embodiment of the present invention can determine feedback information according to the attributes of the timing reference and the non-timed reference of the cell (for example: The channel coding order of the HARQ-ACK information and the CQI/PCI information); the prior art determines the channel coding order for transmitting the feedback information based on the attributes of the serving cell and the secondary serving cell.
  • the terminal device determines whether to switch the attributes of the respective cells and change the order of transmitting the feedback information according to the attributes of the serving cell and the secondary serving cell, depending on the location of the terminal device in the wireless network or the channel environment of each cell. Since the user often moves when using the terminal device, the channel environment of each cell also changes. Therefore, the probability of a serving cell handover is high. Once the serving cell handover occurs, the attributes of the serving cell and the secondary serving cell must be switched. The channel coding order of the feedback information such as the HARQ-ACK information and the CQI/PCI information is inevitably changed, so that in practical applications, the terminal device needs to frequently change the order in which the feedback information is sent, resulting in high-level feedback caused by the disorder of the feedback information.
  • the base station and the terminal device need to occupy additional system resources such as computing resources and channel resources, and remedially process the feedback signal of the transmission error and the retransmission of the corresponding data, which obviously causes waste of system resources.
  • timing reference cell and the non-timed reference cell are switched depends on whether the timing difference between the cells exceeds a certain range.
  • the change of the timing difference is mainly caused by the different crystal oscillator frequencies in the base station equipment to which the cell belongs. Since the base station equipment periodically performs timing calibration, it can basically ensure that the timing difference between the cells changes within a small range, and then the cell occurs.
  • the switching probability of the timing reference and the non-timing reference attribute is small, and the switching does not occur substantially even in a long period of time.
  • the base station device and the terminal device can work in the same channel coding order, and the channel does not need to be changed frequently.
  • the coding sequence thereby reducing the possibility of the asynchronous handover of the base station device and the terminal device, so that the present invention can reduce the high-level data retransmission caused by the disorder of the feedback information during the feedback of the terminal device to the base station device during the cell handover. , the probability of repeated transmission and improper scheduling, saving system resources.
  • An embodiment of the present invention provides an information feedback method, as shown in FIG. 3a, including:
  • This embodiment is based on a multi-stream transmission technique.
  • the terminal device identifies the type of the current cell.
  • the type of the cell includes a timing reference cell and an untimed reference cell.
  • S302 Determine a channel coding sequence according to a type of a cell where the terminal device is currently located.
  • the channel coding sequence includes:
  • the timing reference cell is always ranked first in all cells.
  • S302 may include:
  • S3021 Determine a group to which the non-timed reference cell where the terminal device is currently located belongs.
  • the number of non-timed reference cells in which the terminal device is currently located is greater than or equal to 2.
  • the terminal device may determine, by using a preset grouping relationship of the timing reference cell/non-timed reference cell in each scenario in the MF-Tx, the group to which the non-timed reference cell currently located by the terminal device belongs.
  • Tables 3 and 4 show the channel coding order in the DF-3C (Dual Freq terminal equipment ncy 3 Cell dual-carrier three-cell) + non-MIMO scenario in the existing 3GPP protocol.
  • Timing reference cell contains two cells:
  • one non-timing reference cell and the timing reference cell are in one group (Group 1), where cell 0 corresponds to the timing reference cell; cell 1 corresponds to the non-timing reference cell in the group where the timing reference cell is located; cell 2 Corresponds to the non-timed reference cells in the remaining group (Group 2).
  • the group of the timing reference cell contains a total of one cell:
  • the timing reference cells are in one group, and the other non-timed reference cells are in another group, where cell 0 corresponds to the timing reference cell; cell 1 corresponds to one non-timed reference cell in the remaining group; 2 corresponds to another non-timed reference cell in the remaining group.
  • Tables 5 and 6 show the DF-3C+ in the MF-Tx in the existing 3GPP protocol. Channel coding order in a MIMO scenario.
  • Timing reference cell contains two cells:
  • cell O corresponds to the timing reference cell
  • cell 1 corresponds to the non-timing reference cell in the group where the timing reference cell is located
  • cell 2 corresponds to the non-timing reference cell in the remaining group.
  • the group of the timing reference cell contains a total of one cell:
  • cell O corresponds to the timing reference cell
  • cell 1 corresponds to the non-timing reference cell in the remaining group
  • cell 2 corresponds to the non-timing reference cell in the remaining group.
  • Table 7 shows the channel coding sequence in the DF-4C (Dual Freq terminal equipment ncy 3 Cell dual-carrier four-cell) + non-MIMO scenario in the MF-Tx in the existing 3GPP protocol.
  • MF Active cells HS-DPCCH subfr ame #1 HS-DPCCH subfr ame #2 case Group 1 Group 2 Slot 0 Slot 1 Slot 2 Slot 0 Slot 1 Slot 2
  • Cell 0 corresponds to the timing reference cell
  • cell 1 corresponds to the non-timing reference cell in the group where the timing reference cell is located
  • cell 2 corresponds to the remaining group
  • cell 3 corresponds to the non-timed reference cell in the remaining group.
  • Table 8 shows the channel coding order in the DF-4C+MIMO scenario in the MF-Tx in the existing 3GPP protocol.
  • Table 8 is in Table 8.
  • Cell 0 corresponds to the timing reference cell
  • cell 1 corresponds to the non-timing reference cell in the group where the timing reference cell is located
  • cell 2 corresponds to the non-timing reference cell in the remaining group
  • cell 3 corresponds to the remaining group. Non-timed reference cell.
  • S3022 Arrange the non-timing reference cells in each group in a carrier sequence.
  • the terminal device may use the non-timing reference in each group according to the carrier sequence.
  • the cells are arranged in sequence, for example: In the DF-4C+MIMO scenario shown in Table 8, the terminal device can arrange the two non-timing reference cells of cell 2 and cell 3 in the group of Group 2 according to the carrier sequence: Cell 2 cell 3. Similarly, in other scenarios in the MF-Tx, the terminal device can also sequentially arrange the non-timing reference cells in each group according to the carrier sequence by the same method.
  • S3022 may include the following two parallel processes: First, as shown in FIG. 3b, when there is at least one non-timed reference cell in the group where the timing reference cell is located:
  • the non-timed reference cells in each group are sequentially arranged in the carrier order, and may include:
  • the non-timing reference cells in the first group Group1 are arranged in the first position, the second position, and the Mth position in the carrier order.
  • the non-timing reference cells in the second group Group2 are sequentially arranged in the M+1th position and the M+2th position to the M+Nth position according to the carrier sequence.
  • M, N and X are positive integers greater than 0, and Y is equal to the last in the X-1 group.
  • Position number + 1 , Z is greater than or equal to ⁇ .
  • Sorting in order can include:
  • the non-timing reference cells in the first group Group1 are arranged in the first position, the second position, and the Mth position in the carrier order.
  • the non-timing reference cells in the second group Group2 are sequentially arranged in the M+1th position and the M+2th position to the M+Nth position according to the carrier sequence.
  • M, N and X are positive integers greater than 0, Y is equal to the last position number + 1 in the X-1 group, and Z is greater than or equal to ⁇ .
  • S3023 Arrange the aligned non-timing reference cells behind the timing reference cell.
  • the terminal device always ranks the timing reference cell in the first place of all cells regardless of how the non-timed reference cells are arranged. For example, as shown in Table 8, when the terminal device encodes the feedback information according to the channel coding order, The timing reference cell always corresponds to the PCI/CQI0 in the existing protocol and other information with the suffix number "0".
  • the information to be sent includes: feedback information corresponding to each cell where the terminal device is currently located.
  • the channel-encoded information to be sent is sent to the base station device.
  • the information feedback method based on the multi-stream transmission technology provided by the embodiment of the present invention can determine the channel coding sequence attribute of the cell feedback information by using the timing reference cell/non-timed reference cell as the terminal device.
  • the switching frequency of the attribute of the timing reference cell/non-timed reference cell is not frequent, and the present invention can reduce the out-of-order feedback information in the process of the terminal device feeding back information to the base station device during cell handover. The resulting high-level data retransmission, repeated transmission and improper scheduling problems, saving system resources.
  • An embodiment of the present invention provides a method for information feedback, as shown in FIG. 4, including:
  • the base station device receives the channel coded feedback information sent by the terminal device.
  • the channel coded information includes: feedback information corresponding to each cell where the terminal device is currently located.
  • the specific implementation process of the channel decoding by the base station device is the reverse process of the specific implementation process of the channel coding of the feedback information by the terminal device, which is well known to those skilled in the art.
  • the channel coding sequence is the same as the channel coding sequence followed by the terminal device for channel coding, that is, the timing reference cell is preferentially arranged in front of the non-timed reference cell.
  • the base station device needs to determine the feedback information corresponding to the cell in which the terminal device is located according to the same channel coding sequence as the terminal device.
  • the specific implementation manner may be the same as the prior art, and details are not described herein.
  • the channel coding sequence followed by the base station device and the terminal device includes: the timing reference cell is preferentially arranged in front of the non-timed reference cell. That is, the timing reference cell/non-timing reference cell is used as the terminal device to determine the attribute of the channel coding order of the cell feedback information.
  • the information feedback method based on the multi-stream transmission technology provided by the embodiment of the present invention can determine the channel coding sequence attribute of the cell feedback information by using the timing reference cell/non-timed reference cell as the terminal device.
  • the switching frequency of the attribute of the timing reference cell/non-timed reference cell is not frequent, and the present invention can reduce the out-of-order feedback information in the process of the terminal device feeding back information to the base station device during cell handover. The resulting high-level data retransmission, repeated transmission and improper scheduling problems, saving system resources.
  • An embodiment of the present invention provides a terminal device, as shown in FIG. 5, including:
  • This embodiment is based on a multi-stream transmission technique.
  • the identifying module 51 is configured to identify a type of the current cell, where the type of the cell includes Timing reference cells and non-timed reference cells;
  • the determining module 52 is configured to determine a channel coding sequence according to a type of the cell where the terminal device is currently located, where the channel coding sequence includes: the timing reference cell is preferentially arranged in front of the non-timed reference cell;
  • the encoding module 53 is configured to perform channel coding on the information to be sent according to the channel coding sequence, where the information to be sent includes: feedback information corresponding to each cell where the terminal device is currently located;
  • the sending module 54 is configured to send the channel-coded information to be sent to the base station device.
  • the terminal device provided in this embodiment can determine the channel coding sequence attribute of the cell feedback information by using the timing reference cell/non-timed reference cell as the terminal device, and determine the channel coding order of the cell feedback information by the determining module.
  • the switching frequency of the attribute of the timing reference cell/non-timed reference cell is not frequent, and the present invention can reduce the out-of-order feedback information in the process of the terminal device feeding back information to the base station device during cell handover. The resulting high-level data retransmission, repeated transmission and improper scheduling problems, saving system resources.
  • An embodiment of the present invention provides a terminal device, as shown in FIG. 6a, including:
  • This embodiment is based on a multi-stream transmission technique.
  • the identifying module 61 is configured to identify a type of the current cell, where the type of the cell includes Timing reference cells and non-timed reference cells.
  • the determining module 62 is configured to determine a channel coding sequence according to a type of the cell where the terminal device is currently located, where the channel coding sequence includes: the timing reference cell is preferentially arranged in front of the non-timed reference cell.
  • the number of the non-timed reference cells in which the terminal device is currently located is greater than or equal to 2, and the determining module 62 includes:
  • the non-timing reference cell arranging unit 621 is configured to arrange the non-timed reference cells where the terminal device is currently located according to a preset rule.
  • the non-timing reference cell arranging unit 621 includes: a group determining sub-unit 6211, configured to determine a group to which the non-timing reference cell where the terminal device is currently located belongs.
  • the arranging sub-unit 6212 is configured to sequentially arrange the non-timing reference cells in each group in a carrier order.
  • non-timing reference cell arranging unit 621 can be used in the following two scenarios: First, there is at least one non-timed reference cell in the group where the timing reference cell is located, and the group in which the timing reference cell is located is set as the first group Groupl. In the non-timing reference cell arrangement unit 621:
  • the arranging sub-unit 6212 is further configured to arrange the non-timing reference cells in the first group Group1 determined by the group determining sub-units in the first position and the second position according to the carrier sequence. To the M position.
  • the arranging sub-unit 6212 is further configured to sequentially arrange the non-timing reference cells in the second group Group2 determined by the group determining sub-unit in the M+1 position and the M+2 position in the carrier sequence until The M+N position.
  • the arranging sub-unit 6212 is further configured to sequentially arrange the non-timing reference cells in the Xth group determined by the group determining sub-unit in the Yth position and the Y+1th position according to the carrier sequence until The Z position, so that all the non-timing reference cells currently in which the terminal device is located are sequentially arranged according to the carrier order, and M, N, and X are positive integers greater than 0, and Y is equal to the last position number + 1 in the X-1 group. , Z is greater than or equal to ⁇ .
  • the non-timing reference cell does not exist in the group in which the timing reference cell is located, and the group in which the timing reference cell is located is set as the first group Group1, and in the non-timing reference cell arrangement unit 621:
  • the arranging sub-unit 6212 is further configured to arrange the non-timing reference cells in the first group Group1 determined by the group determining sub-unit in the first position, the second position, and the Mth position in the carrier order.
  • the arranging sub-unit 6212 is further configured to sequentially arrange the non-timing reference cells in the second group Group2 determined by the group determining sub-unit in the M+1 position and the M+2 position in the carrier sequence until The M+N position.
  • the arranging sub-unit 6212 is further configured to sequentially arrange the non-timing reference cells in the Xth group determined by the group determining sub-unit in the Y-th position and the Y+1 in the carrier sequence.
  • the position is up to the zth position, so that all the non-timing reference cells currently in which the terminal device is located are sequentially arranged according to the carrier order, and M, N, and X are positive integers greater than 0, and Y is equal to the last position number in the X-1 group. + 1 , Z is greater than or equal to ⁇ .
  • the reference cell arranging unit 622 is configured to arrange the aligned non-timing reference cells behind the timing reference cell.
  • the encoding module 63 is configured to perform channel coding on the information to be sent according to the channel coding sequence, where the information to be sent includes: feedback information corresponding to each cell where the terminal device is currently located. Further, the channel coding sequence includes: The timing reference cell is always ranked first in all cells.
  • the sending module 64 is configured to send the channel-coded information to be sent to the base station device.
  • the terminal device provided in this embodiment can determine the channel coding sequence attribute of the cell feedback information by using the timing reference cell/non-timed reference cell as the terminal device, and determine the channel coding order of the cell feedback information by the determining module.
  • the switching frequency of the attribute of the timing reference cell/non-timed reference cell is not frequent, and the present invention can reduce the out-of-order feedback information in the process of the terminal device feeding back information to the base station device during cell handover. The resulting high-level data retransmission, repeated transmission and improper scheduling problems, saving system resources.
  • An embodiment of the present invention provides a base station device, as shown in FIG. 7, including: This embodiment is based on a multi-stream transmission technique.
  • the receiving module 71 is configured to receive channel-coded information that is sent by the terminal device, where the channel-encoded information includes: feedback information corresponding to each cell where the terminal device is currently located;
  • a decoding module 72 configured to perform channel decoding on the feedback information, where the channel decoding is an inverse process of the channel coding
  • the analyzing module 73 is configured to determine feedback information corresponding to the cell where the terminal device is located according to a channel coding sequence, where the channel coding sequence is the same as the channel coding sequence followed by the terminal device when performing channel coding, that is, the following:
  • the reference cell is preferentially arranged in front of the non-timed reference cell.
  • the base station device provided in this embodiment can determine the attribute of the channel coding sequence of the cell feedback information by using the timing reference cell/non-timed reference cell as the terminal device, and the analysis module accordingly determines the feedback information corresponding to the cell where the terminal device is located.
  • the switching frequency of the attribute of the timing reference cell/non-timed reference cell is not frequent, and the present invention can reduce the out-of-order feedback information in the process of the terminal device feeding back information to the base station device during cell handover. The resulting high-level data retransmission, repeated transmission and improper scheduling problems, saving system resources.
  • the embodiment of the invention provides an information feedback system based on multi-stream transmission technology, as shown in FIG. Show, including:
  • the method includes: a terminal device 81 and a base station device 82, wherein:
  • the terminal device 81 identifies the type of the cell in which the current cell is located, and the type of the cell includes a timing reference cell and a non-timing reference cell, and determines a channel coding sequence according to the type of the cell in which the terminal device 81 is currently located.
  • the channel coding sequence includes: the timing reference cell is preferentially arranged in front of the non-timing reference cell, and then the channel to be transmitted is channel-coded according to the channel coding sequence, where the information to be sent includes: each of the current location of the terminal device 81 The feedback information corresponding to the cell finally sends the channel-coded information to be transmitted to the base station device 82.
  • the base station device 82 receives the channel-encoded information that is sent by the terminal device 81, and the channel-encoded information includes: feedback information corresponding to each cell where the terminal device 81 is currently located, and then the feedback The information is channel-decoded, the channel is decoded as an inverse process of the channel coding, and finally, the feedback information corresponding to the cell where the terminal device 81 is located is determined according to a channel coding sequence, and the channel coding sequence is performed by the terminal device 81.
  • the channel coding sequence followed in channel coding is the same, that is, the timing reference cell is preferentially arranged in front of the non-timed reference cell.
  • the channel coding sequence includes: The timing reference cell is always ranked first in all cells.
  • the information feedback system based on multi-stream transmission technology can provide timing reference
  • the cell/non-timing reference cell is used as a terminal device to determine an attribute of a channel coding order of the cell feedback information.
  • the switching frequency of the attribute of the timing reference cell/non-timed reference cell is not frequent, and the present invention can reduce the out-of-order feedback information in the process of the terminal device feeding back information to the base station device during cell handover.
  • the resulting high-level data retransmission, repeated transmission and improper scheduling problems saving system resources.
  • the device embodiment since it is basically similar to the method embodiment, it is described in a relatively simple manner, and the relevant parts can be referred to the description of the method embodiment.
  • a person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random memory ( Random Access).

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

Abstract

La présente invention se rapporte au domaine technique des communications sans fil. Elle concerne un procédé et un système de retour d'informations basés sur une technologie de transmission multi-flux, qui réduisent les risques de survenue d'un problème tel qu'une retransmission, une transmission répétée et un mauvais ordonnancement de données de plus haut niveau lors d'un transfert intercellulaire, ce qui économise les ressources du système. Le procédé selon la présente invention se déroule de la manière suivante : un dispositif terminal identifie le type de la cellule dans laquelle il se trouve à cet instant ; un ordre de codage de canal est déterminé suivant le type de la cellule dans laquelle le dispositif terminal se trouve à cet instant, ledit ordre de codage de canal consistant à fixer de préférence un moment référence de temps avant une cellule de non-référence de temps ; et le codage de canal est réalisé sur les informations à envoyer en fonction de l'ordre de codage de canal. La présente invention s'applique à un processus de retour d'informations selon la technologie de transmission multi-flux.
PCT/CN2012/079512 2012-08-01 2012-08-01 Procédé et système de retour d'informations basés sur une technologie de transmission multi-flux WO2014019174A1 (fr)

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PCT/CN2012/079512 WO2014019174A1 (fr) 2012-08-01 2012-08-01 Procédé et système de retour d'informations basés sur une technologie de transmission multi-flux
CN201280049525.3A CN103891190B (zh) 2012-08-01 2012-08-01 一种基于多流传输技术的信息反馈方法及系统

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