WO2012071962A1 - Procédé et dispositif de décodage de données de liaison descendante - Google Patents

Procédé et dispositif de décodage de données de liaison descendante Download PDF

Info

Publication number
WO2012071962A1
WO2012071962A1 PCT/CN2011/081525 CN2011081525W WO2012071962A1 WO 2012071962 A1 WO2012071962 A1 WO 2012071962A1 CN 2011081525 W CN2011081525 W CN 2011081525W WO 2012071962 A1 WO2012071962 A1 WO 2012071962A1
Authority
WO
WIPO (PCT)
Prior art keywords
common pilot
pilot channel
cell
transmit power
primary
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/CN2011/081525
Other languages
English (en)
Chinese (zh)
Inventor
程翔
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.)
ZTE Corp
Original Assignee
ZTE Corp
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 ZTE Corp filed Critical ZTE Corp
Publication of WO2012071962A1 publication Critical patent/WO2012071962A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0665—Feed forward of transmit weights to the receiver

Definitions

  • WCDMA Wideband Code Division Multiple Access
  • the air interface of the system utilizes a code division multiplexing multiplexing method for wideband spread spectrum wireless communication. , provide data transfer services to the upper layer.
  • the carrier bandwidth is 5 megahertz (MHz), using pairs of bands, one for the uplink and one for the downlink.
  • the air interface uses only a pair of frequency bands (one carrier for each uplink and downlink) to transfer data between the terminal and the Node B.
  • MIMO Multiple-Input Multiple-Output
  • MIM0 can increase the capacity of the channel while improving the reliability of the channel and reducing the bit error rate.
  • the former is the spatial multiplexing gain provided by the MIMO channel
  • the latter is the spatial diversity gain provided by the MIMO channel.
  • MIMO systems multipath is used as a favorable factor.
  • the MIMO system uses multiple antennas (or array antennas) and multiple channels at both the transmitting end and the receiving end.
  • the MIMO multi-input and multi-output is for multi-path wireless channels.
  • the transport stream is spatially coded to form a plurality of substreams of information.
  • the plurality of substreams are transmitted by a plurality of antennas and are received by a plurality of receiving antennas after the spatial channel.
  • Multi-antenna receivers use advanced space-time coding to separate and decode these data substreams for optimal processing.
  • the terminal uses a common pilot channel to estimate the channels seen from different antennas, respectively.
  • One of the antennas transmits the primary common pilot channel in the "antenna mode one" modulation mode; the other antenna can transmit the primary common pilot channel in the "antenna mode two" modulation mode, or "antenna mode one"
  • the modulation mode transmits a secondary common pilot channel.
  • One antenna transmits the primary common pilot channel in a modulation mode of "antenna mode one”, and the other antenna transmits the MIMO pilot configuration mode of the secondary common pilot channel in a modulation mode of "antenna mode one",
  • the MIMO pilot mode is the "primary and secondary common pilot channel”.
  • the secondary common pilot channel provides information on the phase difference of the second MIMO transmit antenna.
  • the ratio of the transmit power of the secondary common pilot channel relative to the transmit power of the primary common pilot channel is referred to as the "power offset of the secondary common pilot channel for MIMO operation."
  • a cell has one and only one carrier, so the multi-carrier high-speed downlink packet access technology must be applied to at least multiple cells corresponding to the number of multi-carriers.
  • the terminal uses a dual-carrier high-speed downlink packet access technology, and at least two cells that use the high-speed downlink packet access technology for data transmission, wherein one carrier of the cell is the primary carrier, and the carrier of the other cell is the secondary carrier;
  • the high-speed downlink packet access technology requires at least three cells, one of which is a carrier of a primary carrier, and the other two of which are secondary carriers (a secondary carrier and a secondary carrier respectively).
  • the cell in which the primary carrier is located using the high-speed downlink packet access technology for data transmission is referred to as a primary carrier cell; the cell in which the secondary carrier is located using the high-speed downlink packet access technology for data transmission is referred to as a secondary carrier cell.
  • the primary carrier cell and the secondary carrier cell can use MIMO alone in the downlink direction.
  • the primary carrier cell may use the MIMO pilot mode of the primary-secondary common pilot channel in the downlink direction; the secondary cell may also use the MIMO pilot mode of the primary-secondary common pilot channel in the downlink direction.
  • the MIMO usage of the primary and secondary cells is independent of each other and has no constraint relationship.
  • the terminal needs to estimate the ratio of the transmit power of the secondary common pilot channel of the cell to the transmit power of the primary common pilot channel, for decoding and receiving in the downlink direction of the cell. High-speed downlink packet access data.
  • the radio network controller that manages the wireless connection between the terminal and the radio access network serves the radio network controller of the terminal, and one terminal has one and only one serving radio network controller.
  • the serving radio network controller of the terminal is responsible for direct connection with the core network, and retains the context information of the terminal, and is responsible for the terminal.
  • the physical layer of the air interface includes the media access control layer, the radio link control layer, the radio resource control layer and other protocols, and is responsible for the handover decision of the terminal, the outer loop power control, and the radio access bearer parameters to the air interface transmission. Functions such as mapping of channel parameters.
  • the serving radio network controller broadcasts the primary common pilot channel transmit power information of the cell to the terminal through the system message, and the terminal retains the information. If the secondary cell is outside the jurisdiction of the serving radio network controller, the serving radio network controller does not know the ratio of the secondary common pilot channel transmit power of the secondary cell to the primary common pilot channel transmit power. Therefore, when the serving radio network controller notifies the terminal to perform multi-carrier high-speed downlink packet access technology operation, the serving radio network controller can only inform the terminal that the secondary cell uses the MIMO pilot mode of the primary-secondary common pilot channel in the downlink direction, However, there is no ratio information of the secondary common pilot channel transmit power of the secondary cell relative to the primary common pilot channel transmit power.
  • the present invention provides a downlink data decoding method and apparatus to solve at least the problem.
  • a downlink data decoding method includes: determining, by the terminal, the transmit power of the secondary common pilot channel of the secondary cell where the terminal is located according to the acquired cell information, where the cell information carries the first power ratio and/or the primary cell where the terminal is located Whether the downlink direction uses the information of the multiple input multiple output (MIMO) pilot mode of the primary and secondary common pilot channels, and the first power ratio is the secondary common pilot channel transmit power of the primary cell where the terminal is located, relative to the primary common pilot channel transmit power.
  • MIMO multiple input multiple output
  • the ratio is; the terminal uses the secondary common pilot channel transmit power of the secondary cell for downlink data decoding.
  • the cell information carries the information of the MIMO pilot mode and the first power ratio of the primary and secondary common pilot channels in the downlink direction of the primary cell where the terminal is located, and the terminal determines, according to the received cell information, the secondary cell where the terminal is located.
  • the common pilot channel transmit power includes: determining, by the terminal, a ratio of a secondary common pilot channel transmit power of the secondary cell to a transmit power of the primary common pilot channel as a first power ratio; the terminal transmitting according to the first power ratio and the primary common pilot channel The power determines the secondary common pilot channel transmit power of the secondary cell.
  • the cell information carries the MIMO pilot information of the primary and secondary common pilot channels in the downlink direction of the primary cell where the terminal is located, and does not carry the first power ratio, and the terminal determines, according to the received cell information, the secondary cell where the terminal is located.
  • the common pilot channel transmit power includes: the terminal determines that the ratio of the secondary common pilot channel transmit power of the secondary cell to the primary common pilot channel transmit power is 0 dB; and the terminal according to the determined secondary common channel pilot transmit power of the secondary cell is relatively The ratio of the transmit power of the primary common pilot channel is 0 dB, and the transmit power of the secondary common pilot channel of the secondary cell is determined to be the transmit power of the primary common pilot channel.
  • the cell information carries the information of the MIMO pilot mode in which the primary cell in the downlink direction of the terminal does not use the primary and secondary common pilot channels, and the terminal determines, according to the received cell information, the secondary common pilot channel transmission of the secondary cell where the terminal is located.
  • the power includes: the terminal determines that the secondary common pilot channel transmit power of the secondary cell is 0 dB relative to the primary common pilot channel transmit power; and the terminal transmits power according to the determined secondary common pilot channel of the secondary cell.
  • the primary common pilot channel transmission power is 0 dB
  • the secondary common pilot channel transmission power of the secondary cell is determined to be the primary common pilot channel transmission power.
  • the method further includes: the serving radio network controller sending the cell information to the terminal.
  • the serving radio network controller sending the cell information to the terminal.
  • the terminal includes: a determining module, configured to determine, according to the acquired cell information, a transmit power of a secondary common pilot channel of a secondary cell where the terminal is located, where the cell information carries a first power ratio and/or a host where the terminal is located Whether the downlink direction of the cell uses the information of the multiple input multiple output (MIMO) pilot mode of the primary and secondary common pilot channels, and the first power ratio is the secondary common pilot channel transmit power of the primary cell where the terminal is located, and is transmitted relative to the primary common pilot channel.
  • MIMO multiple input multiple output
  • the determining module includes: a first determining submodule, configured to determine the secondary cell when the cell information carries the information of the MIMO pilot mode of the primary and secondary common pilot channels and the first power ratio in the downlink direction of the primary cell where the terminal is located
  • the ratio of the transmit power of the secondary common pilot channel to the transmit power of the primary common pilot channel is a first power ratio
  • the first power determining submodule is configured to determine the secondary cell according to the first power ratio and the transmit power of the primary common pilot channel The secondary common pilot channel transmit power.
  • the determining module includes: a second determining submodule, configured to: when the cell information carries the information of the MIMO pilot mode of the primary and secondary common pilot channels in the downlink direction of the primary cell where the terminal is located, and does not carry the first power ratio, Determining a ratio of a secondary common pilot channel transmit power of the secondary cell to a primary common pilot channel transmit power of 0 dB; a second power determining submodule, configured to determine, according to the determined secondary common channel pilot channel transmit power, The ratio of the transmit power of the primary common pilot channel is 0 dB, and the transmit power of the secondary common pilot channel of the secondary cell is determined to be the transmit power of the primary common pilot channel.
  • a second determining submodule configured to: when the cell information carries the information of the MIMO pilot mode of the primary and secondary common pilot channels in the downlink direction of the primary cell where the terminal is located, and does not carry the first power ratio, Determining a ratio of a secondary common pilot channel transmit power of the secondary cell to a primary
  • the determining module includes: a third determining submodule, configured to: when the cell information carries information of the MIMO pilot mode in which the primary cell of the terminal does not use the primary and secondary common pilot channels in the downlink direction, is used to determine the secondary public of the secondary cell.
  • the pilot channel transmit power is 0 dB relative to the primary common pilot channel transmit power;
  • the third power determining submodule is configured to use, according to the determined secondary common pilot channel transmit power, the transmit power relative to the primary common pilot channel 0 dB, determining the transmit power of the secondary common pilot channel of the secondary cell as the transmit power of the common common pilot channel.
  • a service radio network controller is also provided.
  • the serving radio network controller includes: a sending module, configured to send the cell information to the terminal to determine a secondary common pilot channel transmit power of the secondary cell where the terminal is located, where the cell information carries the first power ratio and/or Whether the downlink direction of the primary cell where the terminal is located uses the information of the multiple input multiple output (MIMO) pilot mode of the primary and secondary common pilot channels.
  • the terminal determines the transmit power of the secondary common pilot channel of the secondary cell in which the secondary cell is located according to the acquired cell information, and performs downlink data decoding, which solves the problem that the secondary common pilot channel transmission of the secondary cell cannot be known in the related art.
  • FIG. 1 is a flowchart of a downlink data decoding method according to an embodiment of the present invention
  • FIG. 2 is a diagram of determining a ratio of a common common pilot channel transmission power to a primary common pilot channel transmission power ratio according to an embodiment of the present invention
  • FIG. 3 is a flow chart 2 of determining a ratio of a transmit power of a secondary common pilot channel to a transmit power of a primary common pilot channel according to an embodiment of the present invention
  • FIG. 4 is a process for determining a secondary common pilot according to an embodiment of the present invention
  • FIG. 5 is a flow chart 3 of determining a ratio of transmit power of a common common pilot channel to a transmit power of a primary common pilot channel according to an embodiment of the present invention
  • FIG. 5 is a flow chart 3 of determining a ratio of transmit power of a common common pilot channel to a transmit power of a primary common pilot channel according to an embodiment of the present invention
  • FIG. 5 is a flowchart of determining a ratio of transmit power of a common common pilot channel to a transmit power of a primary common pilot channel according to an embodiment of the present invention
  • 6 is a flowchart 5 of determining a ratio of a transmit power of a secondary common pilot channel to a transmit power of a primary common pilot channel according to an embodiment of the present invention
  • FIG. 7 is a diagram for determining a relative transmit power of a secondary common pilot channel according to an embodiment of the present invention.
  • Flowchart 6 of the ratio of the transmit power of the primary common pilot channel
  • 8 is a structural block diagram of a terminal according to an embodiment of the present invention
  • FIG. 9 is a block diagram showing a preferred structure of a terminal according to an embodiment of the present invention
  • FIG. 10 is a structural block diagram of a serving radio network controller according to an embodiment of the present invention.
  • BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
  • FIG. 1 is a flowchart of a data decoding method according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps S102 and S104.
  • Step S102 The terminal determines, according to the acquired cell information, the transmit power of the secondary common pilot channel of the secondary cell where the terminal is located, where the cell information carries the first power ratio and/or whether the downlink direction of the primary cell where the terminal is located uses the primary and secondary public
  • the information of the multiple input multiple output MIMO pilot mode of the pilot channel, the first power ratio is a ratio of the transmit power of the secondary common pilot channel of the primary cell where the terminal is located to the transmit power of the primary common pilot channel.
  • Step S104 The terminal uses the secondary common pilot channel transmit power of the secondary cell to perform downlink data decoding.
  • the terminal determines the transmit power of the secondary common pilot channel of the secondary cell in which the secondary cell is located according to the obtained cell information, and overcomes the related art that the secondary common pilot channel transmit power of the secondary cell cannot be known relative to the primary common pilot.
  • the ratio of the channel transmit power is not determined, the problem that the secondary common pilot channel transmit power of the secondary cell in which the secondary cell is located is low, and the correct decoding rate of the downlink data is relatively low, and the terminal determines the transmit power of the secondary common pilot channel of the secondary cell in which the terminal is located. Reliability, and improve the accuracy of downlink data decoding.
  • the cell information carries the information of the MIMO pilot mode and the first power ratio of the primary and secondary common pilot channels in the downlink direction of the primary cell where the terminal is located, and a preferred embodiment of step S102 is described below.
  • the ratio information of the secondary common pilot channel transmit power of the primary cell relative to the primary common pilot channel transmit power can be easily obtained, and the multi-carrier high-speed downlink packet access technology is generally applied to the same site with the same coverage.
  • the transmit power of the common pilot channel of the primary cell and the secondary cell is very close, and there is usually no large deviation.
  • the use of the primary cell data for the use of the secondary cell can bring great gain in engineering.
  • the cell information carries the information of the MIMO pilot mode of the primary and secondary common pilot channels in the downlink direction of the primary cell where the terminal is located, and does not carry the first power ratio.
  • a preferred embodiment of step S104 is described below.
  • the terminal determines that the ratio of the transmit power of the secondary common pilot channel of the secondary cell to the transmit power of the primary common pilot channel is 0 dB; the terminal transmits the power according to the determined common common pilot channel of the secondary cell relative to the transmit power of the primary common pilot channel.
  • the ratio is 0 dB, and the secondary common pilot channel transmission power of the secondary cell is determined to be the primary common pilot channel transmission power.
  • the ratio information of the secondary common pilot channel transmit power of the primary cell with respect to the primary common pilot channel transmit power cannot be obtained, it is considered that the secondary common pilot channel transmit power is equal to the primary common pilot.
  • the channel transmit power provides parameters for downlink data decoding, which ensures the accuracy of downlink data decoding.
  • the cell information carries the primary and secondary common pilot channels in the downlink direction of the primary cell where the terminal is located.
  • step S104 determines that the secondary common pilot channel transmit power of the secondary cell is 0 dB relative to the primary common pilot channel transmit power; the terminal transmits power according to the determined secondary common pilot channel transmit power relative to the primary common pilot channel is 0. Decibel, determining the transmit power of the secondary common pilot channel of the secondary cell as the transmit power of the common common pilot channel.
  • the transmit power of the secondary common pilot channel of the secondary cell is determined to be the transmit power of the primary common pilot channel, which ensures the downlink. The accuracy of data decoding.
  • the method further includes: the serving radio network controller transmitting the cell information to the terminal.
  • the reliability and security of the terminal acquiring cell information is improved.
  • Embodiment 1 This embodiment provides a method for a terminal to estimate a power offset of a secondary common pilot channel of a secondary cell in a multi-carrier high-speed downlink packet access technology.
  • the terminal may estimate the secondary commonality of the secondary cell. The ratio of the pilot channel transmit power to the transmit power of the primary common pilot channel.
  • the method includes the following steps 1 and 2.
  • Step 1 The terminal receives the notification of the serving radio network controller, notifies the terminal to use the multi-carrier high-speed downlink packet access technology, and the cell information of the primary and secondary cells includes: whether the primary and secondary common pilot channels are used in the downlink direction of the primary cell. "MIMO pilot mode; and whether the ratio of the transmit power of the secondary common pilot channel of the cell to the transmit power of the primary common pilot channel is used when the MIMO pilot mode of the "primary and secondary common pilot channel" is used.
  • Step 2 When the secondary cell uses the MIMO pilot mode of the primary-secondary common pilot channel in the downlink direction, and there is no ratio information of the secondary common pilot channel transmit power of the secondary cell relative to the primary common pilot channel transmit power.
  • the terminal performs the following estimation: Mode 1: When the primary cell uses the MIMO pilot mode of the primary-secondary common pilot channel in the downlink direction, and the secondary common pilot channel transmit power of the primary cell is transmitted relative to the primary common pilot channel. When the ratio information of the power is used, the terminal estimates that the ratio of the transmit power of the secondary common pilot channel of the secondary cell to the transmit power of the primary common pilot channel is equal to the transmit power of the secondary common pilot channel of the primary cell relative to the transmit power of the primary common pilot channel.
  • Ratio 2 When the primary cell uses the MIMO pilot mode of the primary-secondary common pilot channel in the downlink direction, but does not have the ratio information of the secondary common pilot channel transmit power of the primary cell relative to the primary common pilot channel transmit power The terminal estimates a ratio of the transmit power of the secondary common pilot channel of the secondary cell to the transmit power of the primary common pilot channel.
  • Mode 3 When the downlink direction of the primary cell does not use the MIMO pilot mode of the primary/secondary common pilot channel, the terminal estimates the transmit power of the secondary common pilot channel of the secondary cell relative to the transmit power of the primary common pilot channel. The ratio is equal to zero.
  • the second embodiment of the present invention provides a method for estimating the power offset of the secondary common pilot channel of the secondary cell in the multi-carrier high-speed downlink packet access technology.
  • the scenario in this embodiment is:
  • the terminal uses the dual-carrier high-speed downlink packet access technology
  • the primary cell is the cell 1
  • the secondary cell is the cell 2
  • the downlink direction of the cell 1 uses the MIMO pilot mode of the "primary and secondary common pilot channel” and the secondary common pilot of the cell 1
  • the ratio of the channel transmit power to the transmit power of the primary common pilot channel is 0 dB (Decibel, abbreviated as dB)
  • the downlink direction of the cell 2 uses the MIMO pilot mode of the "primary and secondary common pilot channel” but does not have the complement of the cell 2.
  • 2 is a flowchart 1 for determining a ratio of a transmit power of a secondary common pilot channel to a transmit power of a primary common pilot channel according to an embodiment of the present invention.
  • the method includes steps 210 and 220.
  • the MIMO pilot mode of the channel and the ratio of the transmit power of the secondary common pilot channel of the cell 1 to the transmit power of the primary common pilot channel is 0 dB
  • the downlink direction of the cell 2 uses the MIMO guide of the "primary and common common pilot channel” Frequency mode but without the ratio information of the secondary common pilot channel transmit power of cell 2 relative to the transmit power of the primary common pilot channel.
  • Step 220 The terminal determines that the downlink direction of the cell 2 (secondary cell) uses the MIMO pilot mode of the “primary and secondary common pilot channel” but does not have the secondary common pilot channel transmit power of the cell 2 relative to the transmit power of the primary common pilot channel.
  • the terminal continues to determine that the cell 1 (primary cell) uses the MIMO pilot mode of the "primary and secondary common pilot channel" for the downlink direction and the secondary common pilot channel transmit power of the cell 1 is transmitted with respect to the primary common pilot channel.
  • the power ratio is 0 dB
  • the terminal estimates that the ratio of the transmit power of the secondary common pilot channel in cell 2 to the transmit power of the primary common pilot channel is 0 dB.
  • the third embodiment of the present invention provides a method for estimating the power offset of the secondary common pilot channel of the secondary cell in the multi-carrier high-speed downlink packet access technology.
  • the scenario in this embodiment is:
  • the terminal uses the dual-carrier high-speed downlink packet access technology, the primary cell is the cell 1, the secondary cell is the cell 2, and the downlink direction of the cell 1 uses the MIMO pilot mode of the "primary and secondary common pilot channel” and the secondary common pilot of the cell 1 channel transmission power with respect to the primary common pilot channel transmit power ratio of -6 dB (D eC ibel, dB), the downlink cell 2 using the MIMO pilot "primary and secondary common pilot channel” pilot mode without cell 2 Ratio information of the secondary common pilot channel transmit power relative to the primary common pilot channel transmit power.
  • Step 3 is a flowchart 2 of determining a ratio of a transmit power of a secondary common pilot channel to a transmit power of a primary common pilot channel according to an embodiment of the present invention.
  • the method includes steps 310 and 320.
  • Step 310 The terminal receives the notification of the serving radio network controller, and notifies the terminal to use the dual-carrier high-speed downlink packet access technology, where the primary cell is the cell 1 and the secondary cell is the cell 2, and the downlink direction of the cell 1 uses the primary and secondary common pilots.
  • the MIMO pilot mode of the channel and the ratio of the transmit power of the secondary common pilot channel of the cell 1 to the transmit power of the primary common pilot channel is -6 dB, and the downlink direction of the cell 2 uses the MIMO of the primary and secondary common pilot channels. Pilot mode but without the ratio information of the secondary common pilot channel transmit power of cell 2 relative to the transmit power of the primary common pilot channel.
  • Step 320 The terminal determines that the downlink direction of the cell 2 (secondary cell) uses the MIMO pilot mode of the primary/secondary common pilot channel but does not have the secondary common pilot channel transmit power of the cell 2 relative to the primary common pilot channel transmit power.
  • the terminal continues to determine that the cell 1 (primary cell) uses the MIMO pilot mode of the "primary and secondary common pilot channel" for the downlink direction and the secondary common pilot channel transmit power of the cell 1 is transmitted with respect to the primary common pilot channel.
  • the power ratio is -6 dB
  • the terminal estimates that the ratio of the transmit power of the secondary common pilot channel in cell 2 to the transmit power of the primary common pilot channel is -6 dB.
  • Embodiment 4 provides a method for estimating a power offset of a secondary common pilot channel of a secondary cell in a multi-carrier high-speed downlink packet access technology, where the scenario in this embodiment is: Terminal use Dual-carrier high-speed downlink packet access technology, the primary cell is cell 1, the secondary cell is cell 2, and the downlink direction of cell 1 uses the MIMO pilot mode of "primary and common common pilot channel" but there is no secondary common pilot channel of cell 1.
  • the ratio of the transmit power to the transmit power of the primary common pilot channel, the downlink direction of the cell 2 uses the MIMO pilot mode of the primary-secondary common pilot channel but the secondary common pilot channel transmit power of the cell 2 is relative to the primary common Ratio information of pilot channel transmit power.
  • Step 410 The terminal receives the notification of the serving radio network controller, and notifies the terminal to use the dual-carrier high-speed downlink packet access technology, where the primary cell is the cell 1, the secondary cell is the cell 2, and the downlink direction of the cell 1 uses the primary-auxiliary common pilot.
  • Step 420 The terminal determines that the downlink direction of the cell 2 (secondary cell) uses the MIMO pilot mode of the "primary and secondary common pilot channel” but does not have the secondary common pilot channel transmit power of the cell 2 relative to the transmit power of the primary common pilot channel.
  • the terminal continues to determine that the cell 1 (the primary cell) uses the MIMO pilot mode of the "primary and secondary common pilot channel" in the downlink direction but does not have the secondary common pilot channel transmit power of the cell 1 relative to the primary common pilot channel.
  • the ratio information of the transmit power the terminal estimates the ratio of the transmit power of the secondary common pilot channel in the cell 2 to the transmit power of the primary common pilot channel to be 0 dB.
  • Embodiment 5 provides a method for estimating a power offset of a secondary common pilot channel of a secondary cell in a multi-carrier high-speed downlink packet access technology, where the scenario in this embodiment is:
  • the terminal uses the dual-carrier high-speed downlink packet access technology, the primary cell is the cell 1, and the secondary cell is the cell 2.
  • the downlink direction of the cell 1 does not use the MIMO pilot mode of the primary/secondary common pilot channel, and the downlink direction of the cell 2 is used.
  • the MIMO pilot mode of the "primary and secondary common pilot channel” but without the ratio information of the secondary common pilot channel transmit power of the cell 2 relative to the transmit power of the primary common pilot channel.
  • Step 510 The terminal receives the notification of the serving radio network controller, and notifies the terminal to use the dual-carrier high-speed downlink packet access technology, where the primary cell is the cell 1, the secondary cell is the cell 2, and the downlink direction of the cell 1 is not used.
  • "MIMO channel" of the frequency channel, "main and common pilot channel” is used in the downlink direction of the cell 2 MIMO pilot mode but without the ratio information of the secondary common pilot channel transmit power of cell 2 relative to the primary common pilot channel transmit power.
  • Step 520 The terminal determines that the downlink direction of the cell 2 (secondary cell) uses the MIMO pilot mode of the primary/secondary common pilot channel but does not have the secondary common pilot channel transmit power of the cell 2 relative to the primary common pilot channel transmit power.
  • the terminal continues to determine that the cell 1 (primary cell;) is the MIMO pilot mode in which the "primary and secondary common pilot channel" is not used in the downlink direction, and the terminal estimates the transmit power of the secondary common pilot channel in the cell 2 relative to the master.
  • the ratio of the transmit power of the common pilot channel is 0 dB. It should be noted that, in the first embodiment to the fifth embodiment, the case of one secondary cell is described.
  • Embodiment 6 provides a method for estimating a power offset of a secondary common pilot channel of a secondary cell in a multi-carrier high-speed downlink packet access technology.
  • the scenario in this embodiment is: the serving wireless network controller notifies the terminal.
  • the primary cell is the cell 1
  • the secondary cell is the cell 2 (the secondary carrier)
  • the secondary cell is the cell 3 (the secondary carrier)
  • the downlink direction of the cell 1 is the primary and secondary common pilot.
  • the ratio of the MIMO pilot mode of the channel to the transmit power of the secondary common pilot channel of the cell 1 relative to the transmit power of the primary common pilot channel is -6 dB, and the downlink direction of the cell 2 does not use the "primary and common common pilot channel"
  • the downlink direction of the cell 3 uses the MIMO pilot mode of the "primary and secondary common pilot channel” but does not have the ratio information of the transmit power of the secondary common pilot channel of the cell 3 relative to the transmit power of the primary common pilot channel.
  • 6 is a flowchart 5 of determining a ratio of a transmit power of a secondary common pilot channel to a transmit power of a primary common pilot channel according to an embodiment of the present invention. As shown in FIG.
  • Step 610 The terminal receives the notification of the serving radio network controller, and notifies the terminal to use the three-carrier high-speed downlink packet access technology, where the primary cell is the cell 1, the secondary cell is the cell 2 (the secondary carrier), and the secondary cell is the cell 3 (the secondary cell Two carriers), the downlink direction of the cell 1 uses the MIMO pilot mode of the "primary and common common pilot channel” and the ratio of the transmit power of the secondary common pilot channel of the cell 1 to the transmit power of the primary common pilot channel is -6 dB, The MIMO pilot mode of the "primary and secondary common pilot channel” is not used in the downlink direction of the cell 2, and the MIMO pilot mode of the "primary and secondary common pilot channel” is used in the downlink direction of the cell 3, but the secondary common pilot channel of the cell 3 is not used.
  • Step 620 The terminal determines that the downlink direction of the cell 3 (secondary cell) uses the MIMO pilot mode of the primary/secondary common pilot channel but does not have the secondary common pilot channel transmit power of the cell 3 relative to the primary common pilot channel transmit power. When the ratio information is used, the terminal continues to determine that the cell 1 (primary cell) uses the MIMO pilot mode of the "primary and secondary common pilot channel" in the downlink direction and the secondary common pilot channel transmit power of the cell 1 is relative to the primary common pilot.
  • Embodiment 7 This embodiment provides a method for estimating a power offset of a secondary common pilot channel of a secondary cell in a multi-carrier high-speed downlink packet access technology, and FIG. 7 is a method for determining a secondary common guide according to an embodiment of the present invention.
  • the method includes: the information that the terminal uses the N carrier high speed downlink packet access (N is greater than 1).
  • Cell information of the primary cell the cell information includes: whether the MIMO pilot mode of the primary/secondary common pilot channel is used in the downlink direction of the cell; and whether the MIMO pilot mode of the primary-secondary common pilot channel is used There is information on the ratio of the transmit power of the secondary common pilot channel of the cell to the transmit power of the primary common pilot channel.
  • the cell information of N-1 secondary cells includes: whether the MIMO pilot mode of the primary/secondary common pilot channel is used in the downlink direction of the cell; and the MIMO pilot using the primary-secondary common pilot channel In the mode, there is information on the ratio of the transmit power of the secondary common pilot channel of the cell to the transmit power of the primary common pilot channel.
  • Step 740 The terminal determines whether the cell information of the primary cell satisfies the following conditions: the MIMO pilot mode of the primary-secondary common pilot channel is used in the downlink direction of the primary cell, and the secondary common pilot channel of the primary cell is transmitted. Ratio information of power relative to the transmit power of the primary common pilot channel. If the condition is met, the process proceeds to step 750; otherwise, the primary cell has two possibilities, and the primary cell does not use the MIMO pilot mode of the primary-secondary common pilot channel in the downlink direction; or the primary cell uses the downlink direction.
  • Step 760 The MIMO pilot mode of the "primary and secondary common pilot channel", but without the ratio information of the secondary common pilot channel transmit power of the primary cell relative to the primary common pilot channel transmit power), proceeds to step 760.
  • Step 750 The terminal estimates that the ratio of the transmit power of the secondary common pilot channel in the secondary cell to the transmit power of the primary common pilot channel is equal to the ratio of the transmit power of the secondary common pilot channel of the primary cell to the transmit power of the primary common pilot channel. .
  • step 770 The terminal estimates that the ratio of the transmit power of the secondary common pilot channel in the secondary cell to the transmit power of the primary common pilot channel is equal to 0 dB. After the execution of this step is completed, the process proceeds to step 770.
  • Step 770 The terminal determines whether the N-1 secondary cells have been judged one by one, and if yes, proceeds to step 780; if not, the terminal removes the cell information of the secondary cell as the cell information of the secondary cell, and proceeds to the step 730, continue processing.
  • Step 780 The estimation algorithm ends. It should be noted that the foregoing Embodiments 5 to 7 describe the case of multiple secondary cells.
  • the present embodiment provides a terminal for implementing the above data decoding method.
  • FIG. 8 is a structural block diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 8, the terminal includes: a determining module 82 and a data decoding module 84. The foregoing structure is described in detail.
  • the determining module 82 is configured to determine, according to the acquired cell information, the transmit power of the secondary common pilot channel of the secondary cell where the cell is located, where the cell information carries the first power ratio and/or Whether the primary cell in the downlink direction of the terminal uses the information of the multiple input multiple output MIMO pilot mode of the primary and secondary common pilot channels, and the first power ratio is the secondary common pilot channel transmit power of the primary cell where the terminal is located, relative to the primary common pilot channel.
  • the ratio of the transmit power; the data decoding module 84 is coupled to the determining module 82 for performing downlink data decoding using the secondary common pilot channel transmit power of the secondary cell determined by the determining module 82.
  • the determining module 82 includes: a first determining submodule 821, a first power determining submodule 822, and a second determining submodule 823, The second power determining sub-module 824, the third determining sub-module 825, and the third power determining sub-module 826.
  • the determining module 82 includes: a first determining submodule 821, configured to determine, when the cell information carries the information of the MIMO pilot mode of the primary and secondary common pilot channels in the downlink direction of the primary cell where the terminal is located, and the first power ratio, determining the secondary cell
  • the ratio of the transmit power of the secondary common pilot channel to the transmit power of the primary common pilot channel is a first power ratio
  • the first power determining submodule 822 is coupled to the first determining submodule 821 for determining the submodule 821 according to the first determining Determining a ratio of a secondary common pilot channel transmit power of the secondary cell to a primary common pilot channel transmit power as a first power ratio and a primary common pilot channel transmit power determining a secondary common pilot channel transmit power of the secondary cell.
  • the determining module 82 includes: a second determining submodule 823, configured to: when the cell information carries information about the MIMO pilot mode of the primary and secondary common pilot channels in the downlink direction of the primary cell where the terminal is located, and does not carry the first power ratio, Determining that the ratio of the secondary common pilot channel transmit power of the secondary cell to the primary common pilot channel transmit power is 0 dB; the second power determining submodule 824 is coupled to the second determining submodule 823 for determining according to the second determiner The ratio of the secondary common pilot channel transmit power of the secondary cell determined by the module 823 to the primary common pilot channel transmit power is 0 dB, and the secondary common pilot channel transmit power of the secondary cell is determined to be the primary common pilot channel transmit power.
  • the determining module 82 includes: a third determining sub-module 825, configured to determine a secondary common guide of the secondary cell when the cell information carries information of the MIMO pilot mode in which the primary cell of the terminal does not use the primary and secondary common pilot channels in the downlink direction
  • the frequency channel transmit power is 0 dB relative to the primary common pilot channel transmit power
  • the third power determination sub-module 826 is coupled to the third determining sub-module 825 for use in the secondary commonal of the secondary cell determined by the third determining sub-module 825
  • the pilot channel transmit power is 0 dB relative to the primary common pilot channel transmit power
  • the secondary common pilot channel transmit power of the secondary cell is determined to be the primary common pilot channel transmit power.
  • FIG. 10 is a structural block diagram of a service radio network controller according to an embodiment of the present invention. As shown in FIG. 10, the service radio network is shown in FIG.
  • the controller includes: a sending module 102, which is described in detail below.
  • the sending module 102 is configured to send the cell information to the terminal to determine the transmit power of the secondary common pilot channel of the secondary cell where the terminal is located, where the cell information carries Whether the first power ratio and/or the downlink direction of the primary cell where the terminal is located uses information of the MIMO pilot mode of the primary and secondary common pilot channels.
  • a downlink data decoding method and apparatus are provided, which are capable of obtaining a secondary cell of a MIMO pilot scheme using a "primary and secondary common pilot channel" from a serving radio network controller.
  • the terminal estimates the ratio of the transmit power of the secondary common pilot channel of the secondary cell to the transmit power of the primary common pilot channel, and according to the The ratio determines the transmit power of the secondary common pilot channel of the secondary cell as the primary common pilot channel transmit power for downlink data decoding, and improves the efficiency of downlink data decoding.
  • the terminal in the technical solution of the present invention determines the transmit power of the secondary common pilot channel of the secondary cell in which the secondary cell is located according to the acquired cell information, and performs downlink data decoding, thereby improving the correct rate of downlink data decoding, thereby improving the downlink.
  • the performance of data transfer can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.

Landscapes

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

Abstract

L'invention porte sur un procédé et un dispositif de décodage de données de liaison descendante. Le procédé consiste à : déterminer par un terminal la puissance d'émission d'un canal pilote commun subordonné d'une cellule subordonnée dans laquelle le terminal se trouve conformément à des informations de cellule acquises, les informations de cellule contenant un premier rapport de puissance et/ou des informations concernant le point de savoir si un procédé de pilote MIMO des canaux pilotes communs maître et subordonné est ou non utilisé dans le sens de la liaison descendante d'une cellule maître dans laquelle se trouve le terminal, et le premier rapport de puissance étant le rapport entre la puissance d'émission du canal pilote commun subordonné de la cellule maître dans laquelle se trouve le terminal et la puissance d'émission du canal pilote commun maître ; et décoder par le terminal des données de liaison descendante à l'aide de la puissance d'émission du canal pilote commun subordonné de la cellule subordonnée. La présente invention améliore le taux de précision du décodage de données de liaison descendante.
PCT/CN2011/081525 2010-12-02 2011-10-28 Procédé et dispositif de décodage de données de liaison descendante Ceased WO2012071962A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2010105712220A CN102487305A (zh) 2010-12-02 2010-12-02 下行数据解码方法及装置
CN201010571222.0 2010-12-02

Publications (1)

Publication Number Publication Date
WO2012071962A1 true WO2012071962A1 (fr) 2012-06-07

Family

ID=46152762

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/081525 Ceased WO2012071962A1 (fr) 2010-12-02 2011-10-28 Procédé et dispositif de décodage de données de liaison descendante

Country Status (2)

Country Link
CN (1) CN102487305A (fr)
WO (1) WO2012071962A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6754473B1 (en) * 1999-10-09 2004-06-22 Samsung Electronics Co., Ltd. Apparatus and method for providing closed-loop transmit antenna diversity in a mobile communication system
CN101686557A (zh) * 2008-09-22 2010-03-31 华为技术有限公司 一种多小区调度信息发送方法、装置及用户设备
WO2010039072A1 (fr) * 2008-10-02 2010-04-08 Telefonaktiebolaget L M Ericsson (Publ) Système de communication sans fil et procédé d’affectation d’un canal dans celui-ci

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6754473B1 (en) * 1999-10-09 2004-06-22 Samsung Electronics Co., Ltd. Apparatus and method for providing closed-loop transmit antenna diversity in a mobile communication system
CN101686557A (zh) * 2008-09-22 2010-03-31 华为技术有限公司 一种多小区调度信息发送方法、装置及用户设备
WO2010039072A1 (fr) * 2008-10-02 2010-04-08 Telefonaktiebolaget L M Ericsson (Publ) Système de communication sans fil et procédé d’affectation d’un canal dans celui-ci

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"3rd Generation Partnership Project. Technical Specification Group Radio Access Network. Radio Resource Control (RRC). Protocol specification (Release 9)", 3GPP TS 25.331 V9.4.0, September 2010 (2010-09-01), pages 458 - 460, 836 - 837 *
ZTE: "Power Offset For S-CPICH for MIMO of secondary cell", 3GPP TSG RAN WG3#70, R3-103354, 15 November 2010 (2010-11-15) - 19 November 2010 (2010-11-19), pages 1 - 2 *

Also Published As

Publication number Publication date
CN102487305A (zh) 2012-06-06

Similar Documents

Publication Publication Date Title
CN113574815B (zh) 用于多传输点（trp）传输的低开销信道状态信息（csi）反馈
US20250031204A1 (en) Systems and methods for signaling pdsch diversity
US10165591B2 (en) Multi-user multiple input multiple output wireless communications
US11503651B2 (en) Apparatus and method for transmitting and receiving asynchronous signal in wireless communication system
EP3163974B1 (fr) Système de communication sans fil
RU2660606C2 (ru) Способы и устройства для подтверждения приема многопользовательских беспроводных передач по восходящей линии связи
CN104365049B (zh) 在无额外参考信号下的控制信道上的发送分集的通信方法和装置
JP5006446B2 (ja) ピア・トゥ・ピア・ネットワークにおける受信機ビームフォーミングおよび放棄閾値調節のための技術
CN101682915B (zh) 无线用户装置和供无线用户装置使用的方法和装置
KR20220037414A (ko) 데이터를 전송하기 위한 방법 및 단말 장치
US11641648B2 (en) Device and method for transmitting uplink control signal in wireless communication system
KR20190050838A (ko) 무선 통신 시스템에서 랜덤 액세스를 수행하기 위한 방법 및 장치
WO2009152695A1 (fr) Système à antennes distribuées et son procédé de transmission de données, et contrôleur central
CN111934736B (zh) 一种发送波束优化协议包的方法及设备
EP2850741A1 (fr) Signalisation collaborative répartie dans des émetteurs-récepteurs sans fil bilatéraux simultanés
WO2018175727A1 (fr) Procédé de rétroaction de corrélation de faisceaux dans un système de communication sans fil et équipement utilisateur
CN107735960A (zh) 用于消除无线通信系统中的码元间干扰的方法和设备
CN105850222A (zh) 用于正交频分多址（ofdma）传输的系统及方法
WO2023122097A1 (fr) Commande de répartition de débit dans un réseau sans fil
CN103023545B (zh) 一种无线数据传输方法及网络侧设备
CN107666682A (zh) 通信信道的传输方法及装置、系统
CN102394682B (zh) 多用户多输入多输出协同中继系统信息处理方法
CN118975399A (zh) 用于在无线通信系统中支持基于侧链路的中继通信中的不连续接收模式操作的设备和方法
EP4214840B1 (fr) Précodage au niveau symbole en liaison descendante dans le cadre de la communication miso multi-utilisateurs
WO2019032691A1 (fr) Équipement utilisateur et procédé de mise en correspondance d'élément de ressource

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: 11844185

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: 11844185

Country of ref document: EP

Kind code of ref document: A1