WO2017101095A1 - 一种信道质量指示反馈的方法、用户设备以及网络设备 - Google Patents

一种信道质量指示反馈的方法、用户设备以及网络设备 Download PDF

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Publication number
WO2017101095A1
WO2017101095A1 PCT/CN2015/097834 CN2015097834W WO2017101095A1 WO 2017101095 A1 WO2017101095 A1 WO 2017101095A1 CN 2015097834 W CN2015097834 W CN 2015097834W WO 2017101095 A1 WO2017101095 A1 WO 2017101095A1
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WO
WIPO (PCT)
Prior art keywords
sector
joint
user equipment
cqi
network device
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PCT/CN2015/097834
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English (en)
French (fr)
Inventor
张鹏
赵悦莹
王宗杰
铁晓磊
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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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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201580080195.8A priority Critical patent/CN107615803B/zh
Priority to EP15910566.7A priority patent/EP3379859A4/en
Priority to PCT/CN2015/097834 priority patent/WO2017101095A1/zh
Publication of WO2017101095A1 publication Critical patent/WO2017101095A1/zh
Priority to US16/011,422 priority patent/US10461911B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057Physical resource allocation for CQI
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity 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
    • H04B7/0615Diversity 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
    • H04B7/0619Diversity 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 using feedback from receiving side
    • H04B7/0621Feedback content
    • H04B7/0632Channel quality parameters, e.g. channel quality indicator [CQI]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the present invention relates to the field of communications, and in particular, to a channel quality indicator (CQI) feedback method, a user equipment, and a network device.
  • CQI channel quality indicator
  • WCDMA Wideband Code Division Multiple Access
  • a method for improving the quality of service is a common cell technology, which splits an original sector into a plurality of sectors, and then provides services to the sectors by a plurality of cells with the same scrambling code.
  • the user equipment UE served by the common cell technology needs to inform the network device of the quality of service of its own sector, and let the network device decide which sector to serve the UE.
  • the network device configures a secondary common pilot channel (S-CPICH, Secondary Common Pilot Channel) for each sector, and simultaneously configures a primary common pilot channel (P-CPICH, Primary Common Pilot Channel) in at least two sectors.
  • S-CPICH Secondary Common Pilot Channel
  • P-CPICH Primary Common Pilot Channel
  • the UE is independently served by a certain sector, that is, a single transmission (ST) mode, or a combination of at least two sectors to provide services to the UE, that is, Omni Transmission (OT) mode.
  • ST single transmission
  • OT Omni Transmission
  • the UE will get what kind of quality of service, wherein the quality of service is indicated by CQI.
  • the UE can estimate the channel quality indicator (CQI) of each sector and each joint sector by measuring the pilot frequency and the pilot frequency, and the UE reports the channel quality indicator of each sector and each joint sector to the base station (NodeB) ( CQI), after receiving the NodeB, the NodeB can determine to provide services to the UE by means of a certain independent sector or a joint sector according to the received channel quality indicator (CQI) of each sector and each joint sector.
  • CQI channel quality indicator
  • the user equipment UE estimates that only one sector of CQI can be obtained at a time, then there are N sectors, where N is a positive integer, and the UE needs to estimate N times to obtain N sectors.
  • the UE estimates the CQI of a joint sector at a time. This poses a big challenge to the complexity of the UE, wasting UE hardware resources.
  • the embodiments of the present invention provide a method for channel quality indication (CQI) feedback, a user equipment, and a network device, which are used to reduce the complexity of the user equipment and save hardware resources of the user equipment.
  • CQI channel quality indication
  • a first aspect of the embodiments of the present invention provides a method for channel quality indication feedback, where the method is applied to a common cell communication system, where one cell in the common cell communication system includes at least two single sectors and at least one joint sector That is, if a cell includes two single sectors, sector 1 and sector 2, there is one joint sector, and the mode of joint service of sector 1 and sector 2 is called a joint sector, and the at least two orders
  • Each single sector in a sector is used to separately provide a single-sector communication service for user equipment in the cell, belonging to an ST mode, and each joint sector in the at least one joint sector is used as the user equipment.
  • a joint sector communication service which belongs to the OT mode and can include:
  • the user equipment receives the tuner frequency transmission signal of each single sector transmitted by the network device, and receives the signal of each single sector after the wireless channel transmission; the user equipment according to the single sector of the tuner frequency Receiving a signal, a pre-known single-sector tuner frequency transmission signal and a first pre-coding matrix to estimate a CQI of each single sector, and receiving signals according to the tuner frequency of each single sector, and knowing in advance And the CQI of the joint sector is estimated by the single-sector pilot frequency transmission signal and the second pre-coding matrix; it should be noted that the implementation is as follows: the user equipment is according to the single fan a channel matrix is estimated by the tuner frequency receiving signal of the area and the pre-known single-sector pilot frequency transmission signal, wherein the single-sector pilot frequency transmission signal is a signal that is previously known by the user equipment and the network equipment, and then The network device transmits, in order to obtain the single-frequency tuner frequency receiving signal received by the user equipment after the transmission of the wireless channel; the user
  • the user equipment is in the common cell mode, and the user equipment first estimates the channel matrix according to the received single-sector tuner frequency receiving signal and the pre-known single-sector tuner frequency transmission signal, and then according to the channel matrix.
  • the channel matrix and the first precoding matrix estimate the CQI of each single sector, and the CQI of each single sector is obtained at one time, so the working efficiency of the user equipment is improved, and the UE hardware resources are saved.
  • the user equipment when the user equipment feeds back each CQI to the network device, the user equipment also provides feedback to each of the CQIs. Precoding of the respective corresponding sectors, where the precoding is encoded by precoding rules, which are predefined by the network device and the user equipment.
  • the user equipment further returns a precoding indicating a corresponding sector of each CQI.
  • the network device may allocate the target sector according to different CQIs.
  • User equipment provides communication services.
  • the user equipment feeds back each CQI by using a periodic feedback rule.
  • the periodic feedback rule is also The user equipment and the network device are pre-defined, and the user equipment feeds back the CQI corresponding to each single sector to the network device when a feedback period corresponding to each single sector arrives; the user equipment is in the When the feedback period corresponding to each joint sector arrives, the CQI corresponding to each joint sector is fed back to the network device.
  • each CQI is fed back through different periods, and the network device learns the CQI received in the corresponding period by using the periodic feedback rule, which is the CQI of the sector defined by the periodic feedback rule.
  • This feedback mode only feeds back the CQI. , saving network resources.
  • the user equipment feeds back the CQI by using a periodic feedback rule and a predefined joint coding rule, where The rules are also predefined by the network device and the user equipment, and the user equipment feeds back, to the network device, the CQI of each single sector coded according to the predefined joint coding rule when the single-sector joint feedback period arrives.
  • the user equipment feeds back, to the network device, the CQI of each joint sector coded according to the predefined joint coding rule when the joint sector joint feedback period comes, which can be understood as CQI of each single sector, each The CQI of the joint sector is first coded by a predefined joint coding rule, and then the jointly coded CQI is fed back according to the periodic feedback rule.
  • the user equipment first encodes the CQI of each single sector and the CQI of each joint sector by a joint coding rule, so that the CQI of multiple sectors can be fed back by one feedback, and the CQI is fed back through the periodic feedback rule. It can reduce the load when the user equipment feedbacks.
  • the user equipment feeds back the CQI by using a periodic feedback rule and a precoding rule.
  • the rules mentioned in the above are also predefined by the network device and the user equipment, and the user equipment feeds back the CQI of each single sector to the network device when the single-sector joint feedback period comes, and indicates the respective The CQIs of the single sector respectively correspond to the precoding of the single sector; the user equipment feeds back the CQI of each joint sector to the network device when the joint sector joint feedback period comes, and indicates the joint sectors
  • the CQIs respectively correspond to the precoding of the joint sector, and the user equipment simultaneously feeds back a precoding when the CQI is fed back through the periodic feedback rule. This precoding is used to indicate the corresponding sector.
  • the load of the user equipment may be reduced, and each CQI is fed back with a precoding, so that the network device identifies each CQI.
  • Which sector is the one that guarantees the security of the transmission.
  • a second aspect of the embodiments of the present invention provides a method for receiving channel quality indication, where the method is applied to a common cell communication system, where one cell in the common cell communication system includes at least two single sectors and at least one joint sector That is, if a cell includes two single sectors, sector 1 and sector 2, there is one joint sector, and the mode of joint service of sector 1 and sector 2 is called a joint sector, and the at least two orders
  • Each single sector in a sector is used to separately provide a single-sector communication service for user equipment in the cell, belonging to an ST mode, and each joint sector in the at least one joint sector is used as the user equipment.
  • a joint sector communication service which belongs to the OT mode and can include:
  • the network device transmits the single-sector tuner frequency transmission signal to the user equipment, and the single-sector tuner frequency transmission signal network device and the user equipment are known in advance, where the tuner frequency transmission signal is sent to the user equipment again.
  • the target sector when the network device receives each CQI, the target sector may be determined to provide a communication service for the user equipment according to different CQI values.
  • the network device receives each CQI that is fed back by the user equipment, and simultaneously receives the The CQI is corresponding to the precoding of the sector, and the network device can learn according to the precoding rule that each precoding indicates a sector corresponding to each CQI, and the network device determines that the target sector provides communication services for the user equipment according to different CQIs.
  • the network device learns the sector information corresponding to each CQI according to precoding. This ensures the reliability of information transmission, and determines the target sector according to different CQIs to provide communication services for the user equipment.
  • the network device receives the CQI fed back by the user equipment according to the periodic feedback rule defined by the user equipment, The network device receives the CQI corresponding to each single sector fed back by the user equipment when the feedback period corresponding to the single sector arrives, and receives the CQI corresponding to each joint sector fed back by the user equipment when the feedback period corresponding to each joint sector arrives, Each CQI is used by the network device to determine that the target sector provides communication services for the user equipment.
  • the network device receives the user according to the periodic feedback rule defined by the user equipment and the predefined joint coding rule.
  • the network device receives the CQI of each single sector coded according to the predefined joint coding rule fed back by the user equipment when the single-sector joint feedback period arrives, and receives the feedback of the user equipment when the joint sector joint feedback period arrives.
  • the CQI of each joint sector coded according to a predefined joint coding rule, each CQI is used by the network device to determine that the target sector provides communication services for the user equipment.
  • the network device can know that the received joint coding of each single-sector CQI, the joint coding of each joint sector, and the corresponding joint coding rules can be used to learn the corresponding CQIs.
  • the sector information determines that the target sector provides communication services for the user equipment according to different CQIs.
  • the network device receives each CQI according to a periodic feedback rule and a precoding rule defined by the user equipment.
  • the network device receives the CQI of each single sector fed back by the user equipment when the single sector joint feedback period arrives, and the precoding of the single sector corresponding to the CQI of each single sector, and the joint sector feedback loop arrives Receiving the CQI of each joint sector fed back by the user equipment, and precoding corresponding to the joint sector of the CQI of each joint sector, and each CQI is used by the network equipment to determine that the target sector provides communication services for the user equipment.
  • the network device knows the sector information corresponding to each CQI according to the precoding. The security of the information transmission is ensured, and the target sector is determined according to different CQIs to provide communication services for the user equipment.
  • a third aspect of the present invention provides a user equipment, where the user equipment is applied to a common cell communication system, where one cell in the common cell communication system includes at least two single sectors and at least one joint sector, that is, if one The cell includes two single sectors, sector 1 and sector 2, then there is one joint sector, and the mode of sector 1 and sector 2 joint service is called joint sector, and the at least two single sectors
  • Each single sector is used to separately provide a single-sector communication service for user equipment in the cell, belonging to an ST mode
  • each joint sector in the at least one joint sector is used to provide a joint sector for the user equipment.
  • Communication services, belonging to the OT mode including:
  • a receiving module configured to receive a single-sector pilot frequency transmission signal transmitted by the network device, and receive a signal of each single-sector tuner frequency after being transmitted through the wireless channel;
  • An estimation module configured to estimate, according to the single-sector tuner frequency receiving signal received by the receiving module, the pre-known single-sector tuner frequency transmission signal, and the first pre-coding matrix CQI, and estimating the joint sectors according to the single-sector tuner frequency receiving signals received by the receiving module, the pre-known single-sector tuner frequency transmission signals, and the second pre-coding matrix.
  • a feedback module configured to feed back, to the network device, each CQI estimated by the estimation module.
  • the feedback module is further configured to: feed back, to the network device, each of the CQIs Precoding of the corresponding sector.
  • the feedback module is specifically configured to: when a feedback period corresponding to each single sector arrives And feeding back, to the network device, the CQI corresponding to each single sector, and feeding back, to the network device, the CQI corresponding to each joint sector when a feedback period corresponding to each joint sector arrives.
  • the feedback module is specifically configured to: when the single-sector joint feedback period arrives Transmitting, by the network device, the CQIs of the single sectors encoded according to the predefined joint coding rule, and feeding back, according to the predefined joint coding rules, the joints to the network device when the joint sector joint feedback period arrives The CQI of the sector.
  • the feedback module is specifically configured to: when the single-sector joint feedback period arrives The network device feeds back the CQI of each single sector, and the precoding of the single sector corresponding to the CQI of each single sector, and feeds back the joint fans to the network device when the joint sector joint feedback period arrives The CQI of the zone, and the CQI indicating the associated sector, respectively, correspond to precoding of the joint sector.
  • the user equipment can simultaneously estimate the CQI of multiple single sectors, and simultaneously estimate the CQI of multiple joint sectors, which reduces the complexity of the user equipment, saves the hardware resources of the user equipment, and can also Each CQI is fed back to the network device through different rules.
  • a fourth aspect of the present invention provides a network device, where the network device is applied to a common cell communication system, where a cell in the common cell communication system includes at least two single sectors and at least one joint sector, that is, if The cell includes two single sectors, sector 1 and sector 2, then there is one joint sector, and the mode of sector 1 and sector 2 joint service is called joint sector, and the at least two single sectors
  • Each single sector is used to separately provide a single-sector communication service for user equipment in the cell, belonging to an ST mode
  • each joint sector in the at least one joint sector is used to provide a joint sector for the user equipment.
  • Communication services, belonging to the OT mode including:
  • a transmitting module configured to transmit, to the user equipment, the tuner frequency transmission signals of the single sectors
  • a receiving module configured to receive each CQI fed back by the user equipment, where each CQI is used by the network device to determine that a target sector provides a communication service for the user equipment.
  • the receiving module is further configured to receive, by the user equipment, the representation of each CQI Precoding of the respective sector.
  • the receiving module is specifically configured to: when a feedback period corresponding to each single sector arrives Receiving, by the user equipment, the CQI corresponding to each of the single sectors that are fed back by the user equipment, and receiving, when the feedback period corresponding to each joint sector arrives, the CQI corresponding to each joint sector fed back by the user equipment.
  • the receiving module is specifically configured to receive, when the single-sector joint feedback period arrives Deriving the CQI of each single sector encoded by the user equipment according to the predefined joint coding rule, Receiving, by the user equipment, the CQI of each joint sector coded according to the predefined joint coding rule, when the joint sector joint feedback period arrives.
  • the receiving module is specifically used by the network device when a single sector joint feedback period arrives Receiving a CQI of each single sector fed back by the user equipment, and precoding corresponding to a single sector of each CQI of the single sector, and receiving each feedback of the user equipment when a joint sector joint feedback period arrives
  • the CQI of the joint sector, and the CQI indicating the joint sector, respectively, correspond to precoding of the joint sector.
  • the network device receives each CQI fed back by the user equipment by using different rules, and determines, according to each CQI obtained, a target sector to provide communication services for the user equipment.
  • a fifth aspect of the present invention provides a user equipment, where the user equipment is applied to a common cell communication system, where one cell in the common cell communication system includes at least two single sectors and at least one joint sector, that is, if one The cell includes two single sectors, sector 1 and sector 2, then there is one joint sector, and the mode of sector 1 and sector 2 joint service is called joint sector, and the at least two single sectors
  • Each single sector is used to separately provide a single-sector communication service for user equipment in the cell, belonging to an ST mode
  • each joint sector in the at least one joint sector is used to provide a joint sector for the user equipment.
  • the communication service belongs to the OT mode, and the user equipment includes: a radio frequency module, an antenna, a processor, a bus, and a memory; the radio frequency module is connected to the antenna; the radio frequency module, the processor, and the memory are connected through a bus; and the radio frequency module receives each single fan through the antenna.
  • the area's tuner frequency receives the signal.
  • the radio frequency module performs the following functions:
  • the processor performs the following functions:
  • the processor is further configured to perform the following functions:
  • Precoding to the network device indicating a sector corresponding to each of the CQIs.
  • the processor is specifically configured to perform the following functions:
  • the processor is specifically configured to perform the following functions:
  • the CQI of each associated sector encoded according to the predefined joint coding rule is fed back.
  • the processor is specifically configured to perform the following functions:
  • the user equipment can simultaneously estimate the CQI of multiple single sectors, and simultaneously estimate the CQI of multiple joint sectors, which reduces the complexity of the user equipment, saves the hardware resources of the user equipment, and can also Each CQI is fed back to the network device through different rules.
  • a sixth aspect of the present invention provides a network device, where the network device is applied to a common cell communication system, where one cell in the common cell communication system includes at least two single sectors and at least one joint sector, that is, if one The cell includes two single sectors, sector 1 and sector 2, then there is one joint sector, and the mode of sector 1 and sector 2 joint service is called joint sector, and the at least two single sectors
  • Each single sector is used to separately provide a single-sector communication service for user equipment in the cell, belonging to an ST mode
  • each joint sector in the at least one joint sector is used to provide a joint sector for the user equipment.
  • the communication service belongs to the OT mode, and the network device includes: a radio frequency module, an antenna, a processor, a bus, and a memory; the radio frequency module is connected to the antenna; the radio frequency module, the processor, and the memory are connected through a bus; and the radio frequency module transmits each single fan through the antenna.
  • the district's counseling frequency transmits signals.
  • the radio frequency module performs the following functions:
  • the processor performs the following functions:
  • each CQI fed back by the user equipment receives each CQI fed back by the user equipment, where each CQI is used by the network device to determine that a target sector provides communication services for the user equipment.
  • the processor is further configured to perform the following functions:
  • the processor is specifically configured to perform the following functions:
  • the processor is specifically configured to perform the following functions:
  • the processor is specifically configured to perform the following functions:
  • the network device receives each CQI fed back by the user equipment by using different rules, and determines, according to each CQI obtained, a target sector to provide communication services for the user equipment.
  • a seventh aspect of the present invention provides a user equipment, where the user equipment is applied to a common cell communication system, where one cell in the common cell communication system includes at least two single sectors and at least one joint fan Zone, that is, if a cell includes two single sectors, sector 1 and sector 2, there is one joint sector, and the mode of joint service of sector 1 and sector 2 is called a joint sector, and the at least two Each single sector in a single sector is used to separately provide a single-sector communication service for user equipment in the cell, belonging to an ST mode, and each joint sector in the at least one joint sector is used for the user
  • the device provides a joint sector communication service, belonging to an OT mode
  • the user equipment includes: a receiver, a processor, and a transmitter.
  • the receiver is configured to receive a single-sector pilot frequency transmission signal transmitted by the network device, and receive, by the wireless channel, each single-sector tuner frequency receiving signal;
  • the processor is configured to estimate, according to the single-sector tuner frequency receiving signal received by the receiver, the pre-known single-sector tuner frequency transmission signal, and the first pre-coding matrix CQI of the sector, and estimating the joint fan according to the tuner frequency receiving signal of each single sector received by the receiver, the pre-known single-sector tuner frequency transmission signal, and the second precoding matrix District CQI;
  • the transmitter is configured to feed back each CQI to the network device.
  • the transmitter is further configured to feed back, to the network device, precoding indicating a corresponding sector of each CQI.
  • the transmitter is configured to: when the feedback period corresponding to each single sector arrives, feed back, to the network device, the CQI corresponding to each single sector, where And when the feedback period corresponding to each joint sector arrives, the CQI corresponding to each joint sector is fed back to the network device.
  • the transmitter is specifically configured to feed back, to the network device, each single fan coded according to the predefined joint coding rule when the single-sector joint feedback period arrives.
  • the CQI of the zone feeds back to the network device the CQI of each associated sector coded according to the predefined joint coding rule when the joint sector joint feedback period comes.
  • the transmitter is specifically configured to feed back, to the network device, a CQI of each single sector when the single-sector joint feedback period arrives, and represent the single The CQIs of the sectors respectively correspond to the precoding of the single sector, and when the joint sector joint feedback period comes, the CQI of each joint sector is fed back to the network device, and the CQIs of the joint sectors are respectively associated with each other. Precoding of sectors.
  • the user equipment can simultaneously estimate the CQI of multiple single sectors, and simultaneously It is estimated that the CQI of multiple joint sectors is obtained, the complexity of the user equipment is reduced, the hardware resources of the user equipment are saved, and each obtained CQI can be fed back to the network equipment through different rules.
  • An eighth aspect of the present invention provides a network device, where the network device is applied to a common cell communication system, where a cell in the common cell communication system includes at least two single sectors and at least one joint sector, that is, if The cell includes two single sectors, sector 1 and sector 2, then there is one joint sector, and the mode of sector 1 and sector 2 joint service is called joint sector, and the at least two single sectors
  • Each single sector is used to separately provide a single-sector communication service for user equipment in the cell, belonging to an ST mode, and each joint sector in the at least one joint sector is used to provide a joint sector for the user equipment.
  • the communication service belongs to the OT mode, and the network device includes: a transmitter and a receiver.
  • the transmitter is configured to transmit a single sector of the tuner frequency transmission signal to the user equipment.
  • the receiver is configured to receive each CQI fed back by the user equipment, where each CQI is used by the network device to determine that the target sector provides communication services for the user equipment.
  • the receiver is further configured to receive, by the user equipment, a precoding indicating a corresponding sector of each CQI.
  • the receiver is configured to receive, when the feedback period corresponding to each single sector arrives, the CQI corresponding to each single sector fed back by the user equipment, And receiving, when the feedback period corresponding to each joint sector arrives, a CQI corresponding to each joint sector fed back by the user equipment.
  • the receiver is configured to receive, according to the predefined joint coding rule, the feedback, by the user equipment, when the single-sector joint feedback period arrives. The CQI of the sector receives the CQI of each associated sector coded according to the predefined joint coding rule fed back by the user equipment when the joint sector joint feedback period comes.
  • the receiver is specifically configured to receive, by the network device, a CQI of each single sector fed back by the user equipment when a single sector joint feedback period arrives, and a representation
  • Each of the single-sector CQIs corresponds to a single-sector precoding, and when the joint sector joint feedback period comes, the CQI of each joint sector fed back by the user equipment is received, and the CQIs of the joint sectors are respectively indicated.
  • the precoding of the joint sector corresponding to the precoding of the joint sector.
  • the network device receives each CQI fed back by the user equipment by using different rules, and determines, according to each CQI obtained, a target sector to provide communication services for the user equipment.
  • a storage medium is provided in the embodiment of the present invention, and the storage medium is stored and executed.
  • the user equipment receives the tuner frequency transmission signal of each single sector transmitted by the network device, and receives the signal of each single sector after the radio channel is transmitted; the user equipment receives the signal according to the tuner frequency of each single sector. And estimating, by the pre-known each of the single-sector pilot transmit signals, a channel matrix; the user equipment estimating the CQIs of the single sectors according to the channel matrix and the first pre-coding matrix, and according to the The channel matrix and the second precoding matrix estimate a CQI of each of the joint sectors; the user equipment feeds back each CQI to the network device.
  • the storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.
  • a tenth aspect of the present invention provides a common cell communication system, including a user equipment and a network device, where one cell in the common cell communication system includes at least two single sectors and at least one joint sector, that is, if one cell includes two One sector, sector 1 and sector 2, there is one joint sector, and the mode in which sector 1 and sector 2 are jointly served is called a joint sector, and each of the at least two single sectors
  • the area is used to separately provide a single-sector communication service for the user equipment in the cell, and belongs to the ST mode, and each joint sector in the at least one joint sector is used to provide a joint sector communication service for the user equipment, It belongs to OT mode.
  • the user equipment is the user equipment described in the foregoing third aspect or any possible implementation manner of the third aspect;
  • the network device is the network device described in the foregoing fourth aspect or any possible implementation manner of the fourth aspect.
  • the user equipment when the user equipment is in the common cell mode, the user equipment first estimates the channel matrix according to the tuner frequency receiving signal of each single sector and the pre-known pilot frequency transmission signal corresponding to each single sector, and then according to the channel matrix.
  • the first precoding matrix estimates the CQI of each single sector, and obtains the CQI of each single sector at a time, thereby improving the working efficiency of the user equipment and saving the hardware resources of the UE.
  • the target sector can be determined according to the value of different CQI.
  • the device provides communication services.
  • CQI channel quality indication
  • FIG. 2 is a schematic diagram of a display feedback manner according to an embodiment of the present invention.
  • CQI channel quality indication
  • FIG. 4 is a schematic diagram of an implicit feedback mode according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another embodiment of a method for channel quality indication (CQI) feedback according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of feedback of a joint coding rule in an implicit feedback mode according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of another embodiment of a method for channel quality indication (CQI) feedback according to an embodiment of the present invention.
  • CQI channel quality indication
  • FIG. 8 is a schematic diagram of a feedback manner combining an implicit mode and a display mode according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of an embodiment of a user equipment according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an embodiment of a network device according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of another embodiment of a user equipment according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of another embodiment of a network device according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of another embodiment of a user equipment according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of another embodiment of a network device according to an embodiment of the present invention.
  • the embodiments of the present invention provide a method for channel quality indication (CQI) feedback, a user equipment, and a network device, which are used to reduce the complexity of the user equipment and save hardware resources of the user equipment.
  • CQI channel quality indication
  • a common cell communication system including a user equipment and a network device, wherein one cell in the common cell communication system includes at least two single sectors and at least one joint sector, and each of the at least two single sectors
  • each joint sector in at least one joint sector is used to provide a joint sector communication service for the user equipment, and the user equipment needs to feed back the CQI of the sector to the network.
  • the device determines, by the network device, which single sector or joint sector to provide communication services for the user equipment according to the CQI.
  • the CQI estimation is performed in the common cell network by using precoding, the UE passes the precoding matrix, and the channel estimation module using multiple-input multiple-output (MIMO) is adopted once.
  • MIMO multiple-input multiple-output
  • the CQI estimates that the CQI of sector 1 of the single transmission (ST) mode and the CQI of the sector 2 of the ST mode are estimated; and another sector of the Omni Transmission (OT) mode is transmitted by another CQI estimation.
  • the joint CQI of the area 2 is estimated, and the UE obtains three different CQIs through two estimations.
  • the user equipment when the user equipment feeds back the obtained CQI to the network device, it is fed back according to different feedback rules, so that the network device knows which sector each CQI corresponds to according to the rule, and it should be noted that The different feedback rules between the user equipment and the network device are defined by the two parties.
  • the user equipment in the embodiment of the present invention passes different rules.
  • the network device feeds back the specific process of each CQI implementation for description.
  • CQI channel quality indication
  • the network device sends a single-sector pilot transmission signal to the user equipment.
  • the network device includes a network controller and a base station, and the network controller (RNC) sends lub signaling to the base station (NodeB) to configure the common cell mode, and the RNC sends the radio resource control signaling RRC to the user equipment UE through the base station, so that The user equipment is in a common cell mode.
  • RNC network controller
  • the network device configures one pilot frequency for each single sector, and configures each joint sector. A dominant frequency, the network device sends a single sector of the pilot frequency transmission signal to the user equipment.
  • a cell in a common cell communication system, includes two single sectors, namely sector 1 and sector 2, respectively, and then there is one joint sector, and the joint sector is generally an area covered by at least two sectors, the network The device configures the secondary common pilot channel S-CPICH1 for sector 1, the secondary common pilot channel S-CPICH2 for sector 2, and the primary common pilot channel P-CPICH for the joint sector, and the network device transmits a fan to the user equipment.
  • the tuner frequency transmission signal s1 of the area 1 and the tuner frequency transmission signal s2 of the sector 2 need to be explained.
  • one cell in the co-cell communication system includes at least two sectors.
  • the user equipment receives the single-sector pilot frequency transmission signal transmitted by the network device, and receives the signal from each single sector of the tuner frequency after the wireless channel transmission.
  • the network device transmits the tuner frequency transmission signal of the sector 1 and the sector 2 to the user equipment
  • the tuner frequency transmission signal s1 of the sector 1 is transmitted through the radio channel
  • the sector 1 received by the user equipment The signal is the tuner frequency receiving signal y1.
  • the signal of the sector 2 received by the user equipment is the tuner frequency receiving signal y2.
  • the user equipment estimates the CQI of each single sector according to the single-sector tuner frequency receiving signal, the pre-known single-sector tuner frequency transmission signal, and the first pre-coding matrix, and according to each The single-sector tuned frequency receiving signal, the pre-known single-sector tuned-frequency transmitting signal, and the second pre-coding matrix estimate the CQI of each joint sector, which can be actually implemented in steps 103 and 104, as follows: Show:
  • the user equipment estimates the channel matrix according to the single-sector tuner frequency receiving signal and the pre-known single-sector tuner frequency transmission signal.
  • the single-sector tuner frequency transmitting signal may be specified by the protocol.
  • the network device and the user equipment are all known in advance, that is, the tuner frequency transmission signals s1 and s2 of the sector 1 and the sector 2 are a known amount, and the user equipment can be based on the sector.
  • the tuner frequency reception signals y1, y2 of sector 1 and sector 2 and the pilot frequency transmission signals s1, s2 of sector 1 and sector 2 estimate the channel matrix H by the following formula (1-1).
  • the amount actually included in the formula (1-1) is not only the tuner frequency receiving signal, the channel matrix, the tuner frequency transmitting signal, but also the noise (N), interference (I), and signal during the transmission process.
  • Other factors such as the attenuation of energy, these factors can be applied in the formula (1-1), as shown in the formula (1-2), the formula (1-1) is only a concise expression, and these factors are not listed.
  • the following formulas (1-3) and (1-4) are simple expressions.
  • H in the formula (1-1) is a channel matrix, which is an amount to be estimated.
  • the user equipment estimates a CQI of each single sector according to the channel matrix and the first precoding matrix, and estimates a CQI of each joint sector according to the channel matrix and the second precoding matrix.
  • the NodeB uses the MIMO dual stream mode to provide the services of the ST mode sector 1 and the sector 2, that is, the data stream sent by the network device in the sector 1 is d1, and the data stream sent in the sector 2 is d2. And, the NodeB uses the first precoding matrix Then the signal received by the UE is as shown in formula (1-3):
  • the two data streams are in exactly the same form as the MIMO dual stream.
  • the UE can use this V1 precoding, and like the MIMO receiver, estimate the CQI of the two sectors in the ST mode, and the result of the equivalent channel corresponding to the d1 is the CQI1, d2 experience of the ST mode sector 1.
  • the result of the equivalent channel is the CQI2 of ST mode sector 2.
  • the user equipment UE assumes that the NodeB provides the services of the OT mode sector 1 and the sector 2 by reusing the mode of the MIMO single stream, that is, the data streams sent by the network device in the sector 1 and the sector 2 are both d1, Moreover, assume that the NodeB uses the second precoding matrix. Then the signal received by the UE is as shown in formula (1-4):
  • the data stream d1 and the MIMO single stream of the OT mode have exactly the same form, where the single stream can be understood as a codebook based beamforming (Beam Forming), and the UE can reuse the MIMO single stream.
  • Receiver and use The precoding determines the CQI of the sector 1 and sector 2 joint service modes, and the result of the equivalent channel corresponding to d1 is the CQI of the joint sector in the OT mode.
  • the second precoding matrix is also not limited Generally, it is a column vector extracted from the n-row n-column complex matrix U that satisfies the above relationship.
  • Each CQI that the user equipment feeds back to the network device feeds back, to the network device, a precoding indicating a corresponding sector of each CQI.
  • the UE needs to feed back to the NodeB, and the NodeB can distinguish the sector type corresponding to the CQI. Therefore, when the UE feeds back, the three types corresponding to the CQI may be indicated in an explicit manner, including the ST mode sector 1, the ST mode sector 2, and the OT mode joint sector.
  • the indication information is a precoding by the network device by using a precoding rule, and is used to indicate a sector corresponding to the CQI of the feedback, that is, the precoding matrix has Multiple, each precoding matrix has a corresponding sequence number, and the sequence number corresponds to the indication information one by one.
  • the NodeB After receiving the indication information, the NodeB knows that the value of the CQI1 is the value of the sector 1 corresponding to the ST mode, and the indication information It can be indicated by using a pre-coded codebook.
  • the pre-coding rule is a predefined rule of the network device and the user equipment.
  • a codebook is predefined, and there are three different precodings in the codebook, which are respectively the first precoding.
  • Second precoding Third precoding It sequentially represents ST mode sector 1, ST mode sector 2, and OT mode joint sector.
  • These three codebooks can be represented by 2 bits, which are sequentially 10, 01, and 11.
  • the NodeB receives this codebook and determines which of the three modes is used to provide services to the UE.
  • the 2-bit information may be carried in a PCI (Precoding Control Indication) field of a high speed dedicated physical control channel (HS-DPCCH), when the UE is configured to be a total In the cell receiving mode, the PCI domain of the HS-DPCCH has the above meaning.
  • PCI Precoding Control Indication
  • HS-DPCCH high speed dedicated physical control channel
  • the schematic diagram of the display feedback mode is shown in Figure 2.
  • the precoding in the predefined codebook is more than three, generally based on the actual fan. The number of zones and the number of joint sectors are determined.
  • the network device receives each CQI fed back by the user equipment, and receives a precoding indicating a corresponding sector of each CQI fed back by the user equipment, where each CQI is used by the network device to determine that the target sector provides a communication service for the user equipment.
  • the network device receives the CQI1 of the sector 1 and the first Precoding, CQI2 and second precoding of sector 2, CQI3 and third precoding of the joint sector, the network device knows that CQI1 is the channel quality indicator of sector 1 according to the first precoding, and knows CQI2 according to the second precoding Is the channel quality indicator of sector 2, according to the third precoding, knowing that CQI3 is the channel quality indication of the joint sector, the network device can determine whether it is sector 1, sector 2 or joint sector according to the received CQI1, CQI2, CQI3.
  • the user equipment can obtain the channel quality indication of two single sectors by using one calculation, and the MIMO dual-stream transmission technology is applied, which reduces the complexity of the user equipment and saves the hardware resources of the user equipment.
  • the precoding rule feeds back the channel quality indication of each sector, and the PCI domain with multiple input multiple output MIMO technology is applied, and the security is better.
  • the user equipment feeds back each CQI to the network device through a periodic feedback rule.
  • CQI channel quality indication
  • the network device sends a single-sector pilot frequency transmission signal to the user equipment.
  • the user equipment receives the single-sector pilot frequency transmission signal transmitted by the network device, and receives the signal from each single sector of the tuner frequency after the wireless channel transmission.
  • the user equipment estimates the channel matrix according to the single-sector tuner frequency receiving signal and the pre-known single-sector tuner frequency transmission signal.
  • the user equipment estimates a CQI of each single sector according to the channel matrix and the first precoding matrix, and estimates a CQI of each joint sector according to the channel matrix and the second precoding matrix.
  • the steps 301 to 304 in the embodiment of the present invention are the same as the steps 101 to 104 in the embodiment shown in FIG. 1 , and details are not described herein.
  • the user equipment feeds back the CQI corresponding to each single sector to the network device when the feedback period corresponding to each single sector arrives, and feeds back the CQI corresponding to each joint sector to the network device when the feedback period corresponding to each joint sector arrives.
  • the user equipment after the user equipment estimates the CQI1 of the sector 1, the CQI2 of the sector 2, and the CQI3 of the joint sector, the user equipment feeds back the obtained CQI according to the pre-defined periodic feedback rule of the user equipment and the network device.
  • the CQI1 of the sector 1 is fed back to the network device in the first, fourth, ..., 1+3n (n is an integer) period
  • the CQI2 of the sector 2 is at the 2nd, 5th, ..., 2+3n ( n is an integer)
  • the period is fed back to the network device
  • the CQI3 of the joint sector is fed back to the network device in the 3rd, 6th, ..., 3+3n (n is an integer) period, wherein each period duration is T1, the T1
  • the duration can be determined according to actual needs.
  • This feedback method can be called implicit feedback mode, and the implicit feedback mode is shown in Figure 4.
  • the feedback period positions of the CQI1 of the sector 1, the CQI2 of the sector 2, and the CQI3 of the joint sector may be identical, or may be the same at any two feedback periods, for example, in the first
  • the first +3n (n is an integer) period is fed back to the network device, and the CQI2 of the sector 2 or the CQI3 of the joint sector is not limited.
  • the network device receives, when the feedback period corresponding to each single sector arrives, the CQI corresponding to each single sector that is fed back by the user equipment, and receives the corresponding joint sectors that are fed back by the user equipment when the feedback period corresponding to each joint sector arrives.
  • CQI each CQI is used by the network device to determine that the target sector provides communication services for the user equipment.
  • the network device learns, according to the predefined periodic feedback rule of the user equipment and the network device, that the network device receives the CQI1 in the first, fourth, ..., 1+3n (n is an integer) period. It is considered that the channel quality indicator of sector 1 is considered to be the channel quality indicator of sector 2 in the second, fifth, ... 2+3n (n is an integer) period, in the third and sixth
  • the CQI3 received by the 3+3n (n is an integer) period is regarded as the channel quality indicator of the joint sector, and the network device determines whether it is the sector 1, the sector 2 or the joint according to the received CQI1, CQI2, CQI3.
  • the sector provides communication services for the user equipment.
  • the sector indicated as CQI2 provides communication service for the UE, and then according to the received feedback period, the sector corresponding to CQI2 is sector 2, and the network device allocates sector 2 to provide communication service for the UE.
  • the user equipment feeds back the channel quality indicator of each single sector and each joint sector by using a predefined periodic feedback rule with the network device, and the network device knows which one of each feedback period corresponds according to the periodic feedback rule.
  • the network device knows which one of each feedback period corresponds according to the periodic feedback rule.
  • CQI channel quality indication
  • the network device transmits a single-sector pilot frequency transmission signal to the user equipment.
  • the user equipment receives the single-sector pilot frequency transmission signal transmitted by the network device, and receives the signal from each single sector of the tuner frequency after the wireless channel transmission.
  • the user equipment estimates the channel matrix according to the single-sector tuner frequency receiving signal and the pre-known single-sector tuner frequency transmission signal.
  • the user equipment estimates a CQI of each single sector according to the channel matrix and the first precoding matrix, and estimates a CQI of each joint sector according to the channel matrix and the second precoding matrix.
  • the steps 501 to 504 in the embodiment of the present invention are the same as the steps 101 to 104 in the embodiment shown in FIG. 1 , and details are not described herein.
  • the user equipment feeds back, to the network device, the CQI of each single sector coded according to the predefined joint coding rule when the single sector joint feedback period arrives, and sends the network to the network when the joint sector joint feedback period arrives.
  • the device feeds back the CQI of each joint sector encoded according to a predefined joint coding rule.
  • the user equipment may perform the CQI1 of the sector 1 and the CQI2 of the sector 2 according to a predefined joint coding rule.
  • the pre-defined joint coding is performed.
  • the pre-defined joint coding rule and the periodic feedback rule are pre-defined rules of the network device and the user equipment. For example, when the user equipment performs the predefined joint coding, If the primary code has 4 bits a1, a2, a3, a4, then the high bit is defined as a1, a2, and the low bit is a3, a4. It can also be defined that the high bit is a3, a4, and the low bit is a1.
  • a2 here, defines the high bit a1, a2 is the CQI1 of the sector 1, the low bit a3, a4 is the CQI2 of the sector 2, and the user equipment is in the first, third, ... first according to the periodic feedback rule
  • +2n (n is an integer) period the user equipment can feed back the channel quality indication jointly encoded by the sector 1 and the sector 2 to the network device, and the user equipment is in the second, fourth, ..., 2+2n according to the periodic feedback rule. (n is an integer) period, the user equipment can go to the network Preparation of combined feedback channel quality indication of the sector, which are each longer periods T1, this feedback is called joint coding rules implicit feedback in a feedback manner schematic diagram shown in Figure 6.
  • the predefined joint coding rule may also be that the high bit is the CQI2 of the sector 2, and the low bit is the CQI1 of the sector 1.
  • the predefined joint coding rule may be: For example, 1 to 5 bits encode CQI1 of sector 1, 6 to 10 bits encode CQI2 of sector 2, 11 to 15 bits encode CQI3 of sector 3, and so on. If there are three single sectors, then there are three joint sectors, which are the joint of sector 1 and sector 2, which is the first joint sector, and the sector 2 and sector 3 are combined, which is the second joint sector. Sector 1, sector 2, and sector 3 are combined to be a third joint sector.
  • the CQI of the first joint sector is 1 to 5 bits, and 6 to 10 bits are the second sector.
  • CQI, 11 to 15 bits are the CQI of the third joint sector, here is a predefined joint coding rule of a plurality of joint sectors, and a plurality of single sector pre-defined joint coding rules are similar.
  • the network device receives the CQI of each single sector coded according to the predefined joint coding rule fed back by the user equipment when the single-sector joint feedback period arrives, and receives the feedback of the user equipment according to the predefined when the joint sector joint feedback period arrives.
  • the CQI of each joint sector coded by the joint coding rule, and each CQI is used by the network device to determine that the target sector provides communication services for the user equipment.
  • the network device learns according to the periodic feedback rule that the first, third, ..., 1+2n (n is an integer) the CQI jointly encoded by the sector 1 and the sector 2 received by the period, and after decoding by the network device, the CQI1 of the high bit is determined as the channel quality indicator of the sector 1 according to the predefined joint coding rule, and the low bit
  • the CQI2 of the bit is the channel quality indicator of the sector 2
  • the CQI of the joint sector is received in the second, fourth, ..., 2+2n (n is an integer) period
  • the network device determines according to the received CQI1, CQI2,
  • the CQI3 determines whether the sector 1, the sector 2, or the joint sector provides communication services for the user equipment.
  • the CQI is jointly coded by the sector 1 and the sector 2.
  • the network device then knows that the sector corresponding to the high bit CQI1 is the sector 1 according to the predefined joint coding rule, and the allocation sector 1 provides the communication service for the UE.
  • the user equipment first jointly encodes the CQIs of the sector 1 and the sector 2 according to the predefined joint coding rule, and then feeds back the CQI jointly coded by the sector 1 and the sector 2 according to the periodic feedback rule, and the joint
  • the CQI of the sector the network device learns the corresponding CQI and the sector indication information corresponding to each CQI according to the predefined joint coding rule and the periodic feedback rule, so that the fed back CQI and the sector indication information reduce the complexity of the user equipment.
  • the security of the sector indication information is also improved.
  • the user equipment feeds back each CQI to the network device by using a precoding rule and a periodic feedback rule.
  • CQI channel quality indication
  • the network device sends a single-sector pilot transmission signal to the user equipment.
  • the user equipment receives the tuner frequency transmission signal of each single sector transmitted by the network device, and receives the signal of each single sector after the wireless channel transmission.
  • the user equipment estimates the channel matrix according to the single-sector tuner frequency receiving signal and the pre-known single-sector tuner frequency transmission signal.
  • the user equipment estimates a CQI of each single sector according to the channel matrix and the first precoding matrix, and estimates a CQI of each joint sector according to the channel matrix and the second precoding matrix.
  • the steps 701 to 704 in the embodiment of the present invention are the same as the steps 101 to 104 in the embodiment shown in FIG. 1 , and details are not described herein.
  • the user equipment feeds back the single sector to the network device when the single-sector joint feedback period arrives.
  • CQI, and precoding corresponding to a single sector of each CQI of each single sector feeding back the CQI of each joint sector to the network device when the joint sector joint feedback period comes, and indicating the corresponding joint of the CQIs of each joint sector Precoding of sectors.
  • the user equipment when the user equipment estimates the CQI1 of the sector 1, the CQI2 of the sector 2, and the CQI3 of the sector, the user equipment predefines a codebook according to the precoding rule, and there are three different precodings in the codebook.
  • First precoding Second precoding Third precoding It sequentially represents ST mode sector 1, ST mode sector 2, and OT mode joint sector.
  • These three codebooks can be represented by 2 bits, which are sequentially 10, 01, and 11, and the NodeB receives the codebook and determines three types.
  • the first precoding is used to indicate that CQI1 is the channel quality indicator of the first sector
  • the second precoding is used to indicate that CQI2 is the channel quality indicator of the second sector
  • the third precoding A channel quality indicator used to indicate that CQI3 is a joint sector.
  • the user equipment then feeds back the CQI1 of the sector 1 and the CQI2 of the sector 2 to the network device according to the periodic feedback rule at the first, third, ..., 1+2n (n is an integer) period, and the corresponding sector 1 First precoding, second precoding corresponding to sector 2, when the second, fourth, ... 2+2n (n is an integer) period, feeding back the CQI3 of the joint sector to the network device, and the corresponding
  • the three pre-codings, wherein each period of time is T1 it should be noted that the pre-coding rules and the periodic feedback rules are predefined rules of the user equipment and the network device, and the feedback manner is combined with the display mode. Feedback mode, the schematic diagram is shown in Figure 8.
  • the network device receives the CQI of each single sector fed back by the user equipment when the single-sector joint feedback period arrives, and the pre-coding of the single-sector corresponding to the CQI of each single-sector, and the joint sector feedback loop arrives. Receiving the CQI of each joint sector fed back by the user equipment, and precoding corresponding to the joint sector of the CQI of each joint sector, and each CQI is used by the network equipment to determine that the target sector provides communication services for the user equipment.
  • the network device learns, according to the periodic feedback rule, that the user equipment feedback in the first, third, ..., 1+2n (n is an integer) period is the CQI1 of the sector 1 and the corresponding to the sector 1.
  • the network device further knows according to the precoding rule that the CQI1 corresponding to the first precoding is the channel quality indicator of the sector 1, and the CQI2 corresponding to the second precoding
  • the CQI3 corresponding to the third precoding is the channel quality indicator of the sector 3
  • the network device is determined by the received CQI1, CQI2, CQI3 to be the sector 1, the fan.
  • the area 2 or the joint sector provides communication services for the user equipment.
  • the precoding rule and the periodic feedback rule know the sector information corresponding to each CQI.
  • the method for channel quality indication (CQI) feedback in the embodiment of the present invention is described above.
  • the following describes the user equipment in the embodiment of the present invention.
  • the user equipment is applied to the common cell communication system, and one cell in the common cell communication system includes At least two single sectors and at least one joint sector, each of the at least two single sectors being used to separately provide a single sector communication service for user equipment in the cell, each joint in at least one joint sector
  • the sector is used to provide a joint sector communication service for the user equipment.
  • an embodiment of the user equipment in the embodiment of the present invention includes: a receiving module 901, an estimating module 902, and a feedback module 903.
  • the receiving module 901 is configured to receive a single-sector pilot frequency transmission signal transmitted by the network device, and receive a single-sector tuner frequency reception signal after being transmitted through the wireless channel.
  • the estimating module 902 is configured to estimate, according to the tuner frequency receiving signal of each single sector received by the receiving module 901, the pre-known single-sector tuner frequency transmitting signal, and the first pre-coding matrix. And determining, according to the CQI of each single sector, the tuner frequency receiving signal of each single sector received by the receiving module 901, the pre-known single-sector tuner frequency transmission signal, and the second precoding matrix. CQI of each joint sector.
  • the feedback module 903 is configured to feed back, to the network device, each CQI estimated by the estimation module 902.
  • the feedback module 903 is further configured to feed back, to the network device, precoding indicating a corresponding sector of each CQI.
  • the feedback module 903 is specifically configured to be used in each single fan.
  • the CQI corresponding to each single sector is fed back to the network device, and the CQI corresponding to each joint sector is fed back to the network device when the feedback period corresponding to each joint sector arrives.
  • the feedback module 903 is specifically configured to feed back, to the network device, the CQI of each single sector encoded according to the predefined joint coding rule when the single-sector joint feedback period arrives.
  • the CQI of each joint sector coded according to the predefined joint coding rule is fed back to the network device.
  • the feedback module 903 is specifically configured to feed back, to the network device, the CQI of each single sector when the single-sector joint feedback period arrives, and represent the CQI of each single sector.
  • the CQI of each joint sector is fed back to the network device when the joint sector joint feedback period comes, and the pre-coding of the joint sector corresponding to the CQI of each joint sector is indicated.
  • the user equipment can simultaneously estimate the CQI of multiple single sectors, and simultaneously estimate the CQI of multiple joint sectors, which reduces the complexity of the user equipment, saves the hardware resources of the user equipment, and can also pass Different rules feed back each CQI obtained to the network device.
  • the network device in the embodiment of the present invention is described below.
  • the network device is applied to a common cell communication system.
  • One cell in the common cell communication system includes at least two single sectors and at least one joint sector, and at least two single sectors.
  • Each of the single sectors is used to separately provide a single-sector communication service for user equipments in the cell, and each joint sector in at least one joint sector is used to provide a joint sector communication service for the user equipment, as shown in FIG.
  • An embodiment of the network device in the embodiment of the invention includes: a transmitting module 1001 and a receiving module 1002.
  • the transmitting module 1001 is configured to transmit, to the user equipment, a single-sector pilot transmission signal.
  • the receiving module 1002 is configured to receive each CQI fed back by the user equipment, where each CQI is used by the network device to determine that the target sector provides a communication service for the user equipment.
  • the receiving module 1002 is further configured to receive, by the user equipment, a precoding that indicates a corresponding sector of each CQI.
  • the receiving module 1002 is specifically configured to: when a feedback period corresponding to each single sector arrives, receive a CQI corresponding to each single sector fed back by the user equipment, in each joint sector. When the corresponding feedback period arrives, the CQI corresponding to each joint sector fed back by the user equipment is received.
  • the receiving module 1002 is specifically configured to be in a single fan. Receiving, by the user equipment, the CQI of each single sector coded according to the predefined joint coding rule, when the joint joint feedback period arrives, receiving the feedback of the user equipment according to the predefined joint coding rule when the joint sector joint feedback period arrives The CQI of the joint sector.
  • the receiving module 1002 is specifically configured to: when the single-sector joint feedback period arrives, the network device receives the CQI of each single sector fed back by the user equipment, and indicates each single sector.
  • the CQIs respectively correspond to pre-coding of a single sector, and receive CQIs of the joint sectors fed back by the user equipment when the joint sector joint feedback period arrives, and precoding of the corresponding joint sectors of the CQIs of the joint sectors.
  • the network device receives each CQI fed back by the user equipment by using different rules, and determines, according to each obtained CQI, the target sector to provide communication services for the user equipment.
  • the user equipment and the network device in the embodiment of the present invention are described above from the perspective of the modular functional entity.
  • the user equipment and the network device in the embodiment of the present invention are described below from the perspective of hardware processing.
  • another embodiment of the user equipment in the embodiment of the present invention includes: a radio frequency module 1101 , an antenna 1102 , a processor 1103 , a bus 1104 , and a memory 1105 ; the radio frequency module 1101 is connected to the antenna 1102 ; the radio frequency module 1101 and the processor 1103 And the memory 1105 is connected through the bus 1104; the radio frequency module 1101 receives the single-sector tuner frequency receiving signal through the antenna 1102.
  • the radio frequency module 1101 performs the following functions:
  • the processor 1103 performs the following functions:
  • the processor 1103 is further configured to perform the following functions:
  • Precoding to the network device indicating a sector corresponding to each of the CQIs.
  • the processor 1103 is specifically configured to perform the following functions:
  • Feeding the single fans to the network device when a feedback period corresponding to each single sector arrives The CQI corresponding to the area feeds back the CQI corresponding to each joint sector to the network device when a feedback period corresponding to each joint sector arrives.
  • the processor 1103 is specifically configured to perform the following functions:
  • the CQI of each associated sector encoded according to the predefined joint coding rule is fed back.
  • the processor 1103 is specifically configured to perform the following functions:
  • the user equipment can simultaneously estimate the CQI of multiple single sectors, and simultaneously estimate the CQI of multiple joint sectors, which reduces the complexity of the user equipment, saves the hardware resources of the user equipment, and can also pass Different rules feed back each CQI obtained to the network device.
  • another embodiment of the network device in the embodiment of the present invention includes: a radio frequency module 1201, an antenna 1202, a processor 1203, a bus 1204, and a memory 1205.
  • the radio frequency module 1201 is connected to the antenna 1202.
  • the radio frequency module 1201 and the processor 1203 And the memory 1205 is connected through the bus 1202; the radio frequency module 1201 transmits the single-sector pilot transmission signal through the antenna 1202.
  • the radio frequency module 1201 performs the following functions:
  • the processor 1203 performs the following functions:
  • each CQI fed back by the user equipment receives each CQI fed back by the user equipment, where each CQI is used by the network device to determine that a target sector provides communication services for the user equipment.
  • the processor 1203 is further configured to perform the following functions:
  • the processor 1203 is specifically configured to perform the following functions:
  • the processor 1203 is specifically used to perform the following functions:
  • the processor 1203 is specifically configured to perform the following functions:
  • the network device receives each CQI fed back by the user equipment by using different rules, and determines, according to each obtained CQI, the target sector to provide communication services for the user equipment.
  • an embodiment of the user equipment in the embodiment of the present invention includes: a receiver 1301, a processor 1302, and a transmitter 1303.
  • the receiver 1301 is configured to receive, by the network device, the single-sector tuner frequency transmission signal, and the single-sector tuner frequency reception signal after the radio channel transmission;
  • the processor 1302 is configured to estimate, according to the tuner frequency receiving signal of each single sector received by the receiver 1301, the pre-known single-sector tuner frequency transmission signal, and the first precoding matrix.
  • the CQI of each single sector, and according to the tuner frequency receiving signal of each single sector received by the receiver 1301, the pre-known single-sector tuner frequency transmission signal and the second precoding matrix The CQI of each joint sector is estimated.
  • the transmitter 1303 is configured to feed back each CQI to the network device.
  • the transmitter 1303 is further configured to feed back, to the network device, precoding indicating a corresponding sector of each CQI.
  • the transmitter 1303 is configured to: when the feedback period corresponding to each single sector arrives, feed back, to the network device, the CQI corresponding to each single sector, And feeding back, to the network device, a CQI corresponding to each joint sector when a feedback period corresponding to each joint sector arrives.
  • the transmitter 1303 is specifically configured to be in the single Feeding, to the network device, a CQI of each single sector coded according to the predefined joint coding rule, when the joint joint feedback period comes, feeding back to the network device when the joint sector joint feedback period comes.
  • the CQI of each joint sector encoded by the joint coding rule is predefined.
  • the transmitter 1303 is configured to feed back, to the network device, a CQI of each single sector when the single-sector joint feedback period arrives, and indicate the foregoing
  • Each of the CQIs of the single sector corresponds to a precoding of a single sector, and when the joint sector joint feedback period comes, the CQI of each joint sector is fed back to the network device, and the CQIs of the joint sectors are respectively corresponding to each other. Precoding of joint sectors.
  • the user equipment can simultaneously estimate the CQI of multiple single sectors, and simultaneously estimate the CQI of multiple joint sectors, which reduces the complexity of the user equipment, saves the hardware resources of the user equipment, and can also pass Different rules feed back each CQI obtained to the network device.
  • the network device in the embodiment of the present invention is described below.
  • the network device is applied to a common cell communication system.
  • One cell in the common cell communication system includes at least two single sectors and at least one joint sector, and at least two single sectors.
  • Each of the single sectors is used to separately provide a single-sector communication service for user equipments in the cell, and each of the at least one joint sector is used to provide a joint sector communication service for the user equipment, as shown in FIG.
  • One embodiment of a network device in an embodiment of the invention includes a transmitter 1401 and a receiver 1402.
  • the transmitter 1401 is configured to transmit, to the user equipment, the tuner frequency transmission signals of the single sectors.
  • the receiver 1402 is configured to receive each CQI fed back by the user equipment, where each CQI is used by the network device to determine that the target sector provides communication services for the user equipment.
  • the receiver 1402 is further configured to receive, by the user equipment, a precoding indicating a corresponding sector of each CQI.
  • the receiver 1402 is configured to receive, when the feedback period corresponding to each single sector arrives, the CQI corresponding to each single sector fed back by the user equipment. And receiving, when the feedback period corresponding to each joint sector arrives, a CQI corresponding to each joint sector fed back by the user equipment.
  • the receiver 1402 is configured to receive, according to the predefined joint coding rule, the feedback that is sent by the user equipment when the single-sector joint feedback period arrives.
  • the single-sector CQI receives the CQI of each joint sector coded according to the predefined joint coding rule fed back by the user equipment when the joint sector joint feedback period arrives.
  • the receiver 1402 is specifically configured to receive, by the network device, a CQI of each single sector fed back by the user equipment when a single sector joint feedback period arrives, and Each of the CQIs of the single sectors corresponds to a single sector precoding, and receives a CQI of each joint sector fed back by the user equipment when the joint sector joint feedback period arrives, and a CQI indicating the joint sector. Each corresponds to a precoding of a joint sector.
  • the network device receives each CQI fed back by the user equipment by using different rules, and determines, according to each obtained CQI, the target sector to provide communication services for the user equipment.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the medium includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

本发明实施例公开了一种信道质量指示(CQI)反馈的方法、用户设备以及网络设备,用于降低用户设备的复杂度,节约用户设备的硬件资源。本发明实施例方法包括:所述用户设备接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号;所述用户设备根据所述各单扇区的辅导频接收信号和预先获知的所述各单扇区的辅导频发射信号估计出信道矩阵;所述用户设备根据所述信道矩阵和第一预编码矩阵估计出所述各单扇区的CQI,并根据所述信道矩阵和第二预编码矩阵估计出所述各联合扇区的CQI;所述用户设备向所述网络设备反馈每个CQI。

Description

一种信道质量指示反馈的方法、用户设备以及网络设备 技术领域
本发明涉及通信领域,尤其涉及一种信道质量指示(Channel Quality Indicator,CQI)反馈的方法、用户设备以及网络设备。
背景技术
在传统的宽带码分多址(Wideband Code Division Multiple Access,WCDMA)蜂窝网络中,一个小区覆盖一个扇区,一个小区的资源能保证一个扇区内用户的服务质量。当扇区内的用户数量增加时,一个小区的资源就无法满足扇区内用户的服务质量。
一个可以提高服务质量的方法,是共小区技术,将原来的一个扇区劈裂成多个扇区,然后由多个同扰码的小区对这些扇区分别提供服务。被共小区技术服务的用户设备UE,需要告知网络设备自己所在扇区的服务质量,让网络设备决定由哪个扇区为UE提供服务。网络设备给每个扇区配置一个辅公共导频信道(S-CPICH,Secondary Common Pilot Channel),并且在至少两个扇区同时配置主公共导频信道(P-CPICH,Primary Common Pilot Channel)。如果由某个扇区独立给UE提供服务,即单一传输(Single Transmission,ST)模式,或者由至少两个扇区联合起来给UE提供服务,即全方位传输(Omni Transmission,OT)模式。这样,UE会得到什么样的服务质量,其中,服务质量通过CQI来指示。首先,UE可以通过测量主导频、辅导频,估计出各个扇区以及各联合扇区的信道质量指示(CQI),UE向基站(NodeB)上报各个扇区以及各联合扇区的信道质量指示(CQI),NodeB收到后,可根据收到的各个扇区以及各联合扇区的信道质量指示(CQI),确定通过某个独立的扇区或者联合扇区的方式给UE提供服务。
在现有技术下,ST模式时,用户设备UE一次估计只能得到一个扇区的CQI,那么有N个扇区,其中N为正整数,UE就需要估计N次,才能得到N个扇区的CQI,OT下,UE一次估计得到一个联合扇区的CQI。这对UE的复杂度带来了较大挑战,浪费UE硬件资源。
发明内容
本发明实施例提供了一种信道质量指示(CQI)反馈的方法、用户设备以及网络设备,用于降低用户设备的复杂度,节省了用户设备的硬件资源。
本发明实施例第一方面提供一种信道质量指示反馈的方法,所述方法应用于共小区通信系统,所述共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,即若一个小区包括两个单扇区,扇区1和扇区2,则有一个联合扇区,扇区1和扇区2联合服务的模式称为联合扇区,所述至少两个单扇区中的各单扇区用于单独为所述小区中的用户设备提供单扇区通信服务,属于ST模式,所述至少一个联合扇区中的各联合扇区用于为所述用户设备提供联合扇区通信服务,属于OT模式,可包括:
所述用户设备接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号;所述用户设备根据所述各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第一预编码矩阵估计出所述各单扇区的CQI,并根据所述各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第二预编码矩阵估计出所述各联合扇区的CQI;需要说明的是,这个实现如下所述:所述用户设备根据所述各单扇区的辅导频接收信号和预先获知的所述各单扇区的辅导频发射信号估计出信道矩阵,其中,各单扇区的辅导频发射信号是用户设备与网络设备预先获知的信号,再由网络设备发射是为了得到经过无线信道的传输后用户设备接收的各单扇区的辅导频接收信号;所述用户设备根据所述信道矩阵和第一预编码矩阵估计出所述各单扇区的CQI,并根据所述信道矩阵和第二预编码矩阵估计出所述各联合扇区的CQI,这块估计出各单扇区和联合扇区的CQI应用了MIMO技术的多流传输和单流传输;所述用户设备向所述网络设备反馈每个CQI。
在本发明实施例中,用户设备处于共小区模式,用户设备先根据接收到的各单扇区的辅导频接收信号以及预先获知的各单扇区的辅导频发射信号估计出信道矩阵,再根据信道矩阵、第一预编码矩阵估计出各单扇区的CQI,一次性就得到了各单扇区的CQI,所以提高了用户设备的工作效率,节省了UE硬件资源。
结合本发明实施例的第一方面,在本发明实施例的第一方面的第一种可能的实现方式中,当用户设备向网络设备反馈每个CQI时,同时还反馈表示所述每个CQI各自对应扇区的预编码,这里的预编码是通过预编码规则编码的,此规则是网络设备与用户设备预先定义好的。
在本发明实施例中,用户设备还反馈表示所述每个CQI各自对应扇区的预编码,为了方便网络设备知道每个CQI对应的扇区,网络设备可以根据不同的CQI分配目标扇区为用户设备提供通信服务。
结合本发明实施例的第一方面,在本发明实施例的第一方面的第二种可能的实现方式中,用户设备是通过周期反馈规则反馈每个CQI的,同样,这里的周期反馈规则也是用户设备与网络设备预先定义好的,所述用户设备在所述各单扇区对应的反馈周期到来时向所述网络设备反馈所述各单扇区对应的CQI;所述用户设备在所述各联合扇区对应的反馈周期到来时向所述网络设备反馈所述各联合扇区对应的CQI。
在本发明实施例中,通过不同的周期反馈每个CQI,网络设备通过周期反馈规则得知在对应的周期接收的CQI,就是周期反馈规则定义的扇区的CQI,这种反馈方式只反馈CQI,节约了网络资源。
结合本发明实施例的第一方面,在本发明实施例的第一方面的第三种可能的实现方式中,用户设备是通过周期反馈规则和预定义联合编码规则反馈CQI的,这里所说的规则同样也是网络设备与用户设备预先定义好的,所述用户设备在所述单扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各单扇区的CQI;所述用户设备在所述联合扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各联合扇区的CQI,可以理解为各单扇区的CQI、各联合扇区的CQI先经过预定义联合编码规则编码,再根据周期反馈规则反馈经过联合编码的CQI。
在本发明实施例中,用户设备先对各单扇区的CQI、各联合扇区的CQI经过联合编码规则编码,这样的话一次反馈就可以反馈多个扇区的CQI,通过周期反馈规则反馈CQI可以降低用户设备反馈时的负荷。
结合本发明实施例的第一方面,在本发明实施例的第一方面的第四种可能的实现方式中,用户设备是通过周期反馈规则和预编码规则反馈CQI的,这 里所说的规则同样也是网络设备与用户设备预先定义好的,所述用户设备在所述单扇区联合反馈周期到来时向所述网络设备反馈各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码;所述用户设备在所述联合扇区联合反馈周期到来时向所述网络设备反馈各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码,用户设备在通过周期反馈规则反馈CQI的时候同时反馈一个预编码,这个预编码用来指示对应的扇区。
在本发明实施例中,用户设备通过周期反馈规则反馈CQI的时候,可以降低用户设备的反馈时的负荷,反馈每个CQI的时候同时反馈一个预编码,是为了让网络设备识别每个CQI对应的扇区是哪个,又保证了传输的安全性。
本发明实施例第二方面提供一种信道质量指示接收的方法,所述方法应用于共小区通信系统,所述共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,即若一个小区包括两个单扇区,扇区1和扇区2,则有一个联合扇区,扇区1和扇区2联合服务的模式称为联合扇区,所述至少两个单扇区中的各单扇区用于单独为所述小区中的用户设备提供单扇区通信服务,属于ST模式,所述至少一个联合扇区中的各联合扇区用于为所述用户设备提供联合扇区通信服务,属于OT模式,可包括:
网络设备向所述用户设备发射所述各单扇区的辅导频发射信号,各单扇区的辅导频发射信号网络设备与用户设备都预先已知,这里再向用户设备发送辅导频发射信号是为了用户设备得到经过无线信道传输之后的辅导频接收信号;所述网络设备接收所述用户设备反馈的每个CQI,所述每个CQI用于所述网络设备确定目标扇区为所述用户设备提供通信服务。
在本发明实施例中,网络设备接收到各个CQI时,可根据不同CQI的值决定目标扇区为用户设备提供通信服务。
结合本发明实施例的第二方面,在本发明实施例的第二方面的第一种可能的实现方式中,所述网络设备接收用户设备反馈的每个CQI时,同时接收表示所述每个CQI各自对应扇区的预编码,网络设备可根据预编码规则得知,每个预编码指示每个CQI对应的扇区,网络设备根据不同的CQI确定目标扇区为用户设备提供通信服务。
在本发明实施例中,网络设备是根据预编码得知每个CQI对应的扇区信息, 这样的保证了信息传输的可靠性,根据不同的CQI确定目标扇区为用户设备提供通信服务。
结合本发明实施例的第二方面,在本发明实施例的第二方面的第二种可能的实现方式中,网络设备是根据与用户设备定义好的周期反馈规则接收用户设备反馈的CQI的,网络设备在各单扇区对应的反馈周期到来时接收用户设备反馈的各单扇区对应的CQI,在各联合扇区对应的反馈周期到来时接收用户设备反馈的各联合扇区对应的CQI,每个CQI用于网络设备确定目标扇区为用户设备提供通信服务。
在本发明实施例中,网络设备接收的只是CQI,是根据不同的周期反馈的CQI知道对应的扇区信息的,这样的方式比较简便。
结合本发明实施例的第二方面,在本发明实施例的第二方面的第三种可能的实现方式中,网络设备是根据与用户设备定义好的周期反馈规则与预定义联合编码规则接收用户设备反馈的CQI的,网络设备在单扇区联合反馈周期到来时接收用户设备反馈的按照预定义联合编码规则编码的各单扇区的CQI,在联合扇区联合反馈周期到来时接收用户设备反馈的按照预定义联合编码规则编码的各联合扇区的CQI,每个CQI用于网络设备确定目标扇区为用户设备提供通信服务。
在本发明实施例中,网络设备通过周期反馈规则可以知道接收的是各单扇区CQI的联合编码,各联合扇区的联合编码,再通过预定义联合编码规则就可得知各个CQI对应的扇区信息,根据不同的CQI确定目标扇区为用户设备提供通信服务。
结合本发明实施例的第二方面,在本发明实施例的第二方面的第四种可能的实现方式中,网络设备是根据与用户设备定义好的周期反馈规则与预编码规则接收每个CQI的,网络设备在单扇区联合反馈周期到来时接收用户设备反馈的各单扇区的CQI,以及表示各单扇区的CQI各自对应单扇区的预编码,在联合扇区联合反馈周期到来时接收用户设备反馈的各联合扇区的CQI,以及表示各联合扇区的CQI各自对应联合扇区的预编码,每个CQI用于网络设备确定目标扇区为用户设备提供通信服务。
在本发明实施例中,网络设备根据预编码知道每个CQI对应的扇区信息, 保证了信息传输的安全性,再根据不同的CQI确定目标扇区为用户设备提供通信服务。
本发明第三方面提供了一种用户设备,所述用户设备应用于共小区通信系统,所述共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,即若一个小区包括两个单扇区,扇区1和扇区2,则有一个联合扇区,扇区1和扇区2联合服务的模式称为联合扇区,所述至少两个单扇区中的各单扇区用于单独为所述小区中的用户设备提供单扇区通信服务,属于ST模式,所述至少一个联合扇区中的各联合扇区用于为所述用户设备提供联合扇区通信服务,属于OT模式,包括:
接收模块,用于接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号;
估计模块,用于根据所述接收模块接收的各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第一预编码矩阵估计出所述各单扇区的CQI,并根据所述接收模块接收的各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第二预编码矩阵估计出所述各联合扇区的CQI;
反馈模块,用于向所述网络设备反馈所述估计模块估计的每个CQI。
结合本发明实施例的第三方面,在本发明实施例的第三方面的第一种可能的实现方式中,所述反馈模块,还用于向所述网络设备反馈表示所述每个CQI各自对应扇区的预编码。
结合本发明实施例的第三方面,在本发明实施例的第三方面的第二种可能的实现方式中,所述反馈模块,具体用于在所述各单扇区对应的反馈周期到来时向所述网络设备反馈所述各单扇区对应的CQI,在所述各联合扇区对应的反馈周期到来时向所述网络设备反馈所述各联合扇区对应的CQI。
结合本发明实施例的第三方面,在本发明实施例的第三方面的第三种可能的实现方式中,所述反馈模块,具体用于在所述单扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各单扇区的CQI,在所述联合扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各联合扇区的CQI。
结合本发明实施例的第三方面,在本发明实施例的第三方面的第四种可能的实现方式中,所述反馈模块,具体用于在所述单扇区联合反馈周期到来时向所述网络设备反馈各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码,在所述联合扇区联合反馈周期到来时向所述网络设备反馈各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
在本发明实施例中,用户设备可以同时估计得到多个单扇区的CQI,同时估计得到多个联合扇区的CQI,降低了用户设备的复杂度,节约了用户设备的硬件资源,还可以通过不同的规则向网络设备反馈每个CQI。
本发明第四方面提供了一种网络设备,所述网络设备应用于共小区通信系统,所述共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,即若一个小区包括两个单扇区,扇区1和扇区2,则有一个联合扇区,扇区1和扇区2联合服务的模式称为联合扇区,所述至少两个单扇区中的各单扇区用于单独为所述小区中的用户设备提供单扇区通信服务,属于ST模式,所述至少一个联合扇区中的各联合扇区用于为所述用户设备提供联合扇区通信服务,属于OT模式,包括:
发射模块,用于向所述用户设备发射所述各单扇区的辅导频发射信号;
接收模块,用于接收所述用户设备反馈的每个CQI,所述每个CQI用于所述网络设备确定目标扇区为所述用户设备提供通信服务。
结合本发明实施例的第四方面,在本发明实施例的第四方面的第一种可能的实现方式中,所述接收模块,还用于接收所述用户设备反馈的表示所述每个CQI各自对应扇区的预编码。
结合本发明实施例的第四方面,在本发明实施例的第四方面的第二种可能的实现方式中,所述接收模块,具体用于在所述各单扇区对应的反馈周期到来时接收所述用户设备反馈的所述各单扇区对应的CQI,在所述各联合扇区对应的反馈周期到来时接收所述用户设备反馈的所述各联合扇区对应的CQI。
结合本发明实施例的第四方面,在本发明实施例的第四方面的第三种可能的实现方式中,所述接收模块,具体用于在所述单扇区联合反馈周期到来时接收所述用户设备反馈的按照所述预定义联合编码规则编码的各单扇区的CQI, 在所述联合扇区联合反馈周期到来时接收所述用户设备反馈的按照所述预定义联合编码规则编码的各联合扇区的CQI。
结合本发明实施例的第四方面,在本发明实施例的第四方面的第四种可能的实现方式中,所述接收模块,具体用于所述网络设备在单扇区联合反馈周期到来时接收所述用户设备反馈的各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码,在联合扇区联合反馈周期到来时接收所述用户设备反馈的各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
在本发明实施例中,网络设备通过不同的规则接收用户设备反馈的每个CQI,并根据得到的每个CQI确定目标扇区为所述用户设备提供通信服务。
本发明第五方面提供了一种用户设备,所述用户设备应用于共小区通信系统,所述共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,即若一个小区包括两个单扇区,扇区1和扇区2,则有一个联合扇区,扇区1和扇区2联合服务的模式称为联合扇区,所述至少两个单扇区中的各单扇区用于单独为所述小区中的用户设备提供单扇区通信服务,属于ST模式,所述至少一个联合扇区中的各联合扇区用于为所述用户设备提供联合扇区通信服务,属于OT模式,所述用户设备包括:射频模块、天线、处理器、总线以及存储器;射频模块与天线连接;射频模块、处理器以及存储器通过总线连接;射频模块通过天线接收各单扇区的辅导频接收信号。
所述射频模块执行如下功能:
接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号。
所述处理器执行如下功能:
根据所述各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第一预编码矩阵估计出所述各单扇区的CQI,并根据所述各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第二预编码矩阵估计出所述各联合扇区的CQI;向所述网络设备反馈每个CQI。
结合本发明实施例的第五方面,在本发明实施例的第五方面的第一种可能的实现方式中,所述处理器还用于执行以下功能:
向所述网络设备反馈表示所述每个CQI各自对应扇区的预编码。
结合本发明实施例的第五方面,在本发明实施例的第五方面的第二种可能的实现方式中,所述处理器具体用于执行以下功能:
在所述各单扇区对应的反馈周期到来时向所述网络设备反馈所述各单扇区对应的CQI,在所述各联合扇区对应的反馈周期到来时向所述网络设备反馈所述各联合扇区对应的CQI。
结合本发明实施例的第五方面,在本发明实施例的第五方面的第三种可能的实现方式中,所述处理器具体用于执行以下功能:
在所述单扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各单扇区的CQI,在所述联合扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各联合扇区的CQI。
结合本发明实施例的第五方面,在本发明实施例的第五方面的第四种可能的实现方式中,所述处理器具体用于执行以下功能:
在所述单扇区联合反馈周期到来时向所述网络设备反馈各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码,在所述联合扇区联合反馈周期到来时向所述网络设备反馈各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
在本发明实施例中,用户设备可以同时估计得到多个单扇区的CQI,同时估计得到多个联合扇区的CQI,降低了用户设备的复杂度,节约了用户设备的硬件资源,还可以通过不同的规则向网络设备反馈每个CQI。
本发明第六方面提供了一种网络设备,所述网络设备应用于共小区通信系统,所述共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,即若一个小区包括两个单扇区,扇区1和扇区2,则有一个联合扇区,扇区1和扇区2联合服务的模式称为联合扇区,所述至少两个单扇区中的各单扇区用于单独为所述小区中的用户设备提供单扇区通信服务,属于ST模式,所述至少一个联合扇区中的各联合扇区用于为所述用户设备提供联合扇区通信服务,属于OT模式,所述网络设备包括:射频模块、天线、处理器、总线以及存储器;射频模块与天线连接;射频模块、处理器以及存储器通过总线连接;射频模块通过天线发射各单扇区的辅导频发射信号。
所述射频模块执行如下功能:
向所述用户设备发射所述各单扇区的辅导频发射信号。
所述处理器执行如下功能:
接收所述用户设备反馈的每个CQI,所述每个CQI用于所述网络设备确定目标扇区为所述用户设备提供通信服务。
结合本发明实施例的第六方面,在本发明实施例的第六方面的第一种可能的实现方式中,所述处理器还用于执行以下功能:
接收所述用户设备反馈的表示所述每个CQI各自对应扇区的预编码。
结合本发明实施例的第六方面,在本发明实施例的第六方面的第二种可能的实现方式中,所述处理器具体用于执行以下功能:
在所述各单扇区对应的反馈周期到来时接收所述用户设备反馈的所述各单扇区对应的CQI,在所述各联合扇区对应的反馈周期到来时接收所述用户设备反馈的所述各联合扇区对应的CQI。
结合本发明实施例的第六方面,在本发明实施例的第六方面的第三种可能的实现方式中,所述处理器具体用于执行以下功能:
在所述单扇区联合反馈周期到来时接收所述用户设备反馈的按照所述预定义联合编码规则编码的各单扇区的CQI,在所述联合扇区联合反馈周期到来时接收所述用户设备反馈的按照所述预定义联合编码规则编码的各联合扇区的CQI。
结合本发明实施例的第六方面,在本发明实施例的第六方面的第四种可能的实现方式中,所述处理器具体用于执行以下功能:
所述网络设备在单扇区联合反馈周期到来时接收所述用户设备反馈的各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码,在联合扇区联合反馈周期到来时接收所述用户设备反馈的各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
在本发明实施例中,网络设备通过不同的规则接收用户设备反馈的每个CQI,并根据得到的每个CQI确定目标扇区为所述用户设备提供通信服务。
本发明第七方面提供了一种用户设备,所述用户设备应用于共小区通信系统,所述共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇 区,即若一个小区包括两个单扇区,扇区1和扇区2,则有一个联合扇区,扇区1和扇区2联合服务的模式称为联合扇区,所述至少两个单扇区中的各单扇区用于单独为所述小区中的用户设备提供单扇区通信服务,属于ST模式,所述至少一个联合扇区中的各联合扇区用于为所述用户设备提供联合扇区通信服务,属于OT模式,所述用户设备包括:接收器、处理器和发送器。
所述接收器,用于接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号;
所述处理器,用于根据所述接收器接收的各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第一预编码矩阵估计出所述各单扇区的CQI,并根据所述接收器接收的各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第二预编码矩阵估计出所述各联合扇区的CQI;
所述发送器,用于向网络设备反馈每个CQI。
可选的,本发明的一些实施例中,所述发送器,还用于向所述网络设备反馈表示所述每个CQI各自对应扇区的预编码。
可选的,本发明的一些实施例中,所述发送器,具体用于在所述各单扇区对应的反馈周期到来时向所述网络设备反馈所述各单扇区对应的CQI,在所述各联合扇区对应的反馈周期到来时向所述网络设备反馈所述各联合扇区对应的CQI。
可选的,本发明的一些实施例中,所述发送器,具体用于在所述单扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各单扇区的CQI,在所述联合扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各联合扇区的CQI。
可选的,本发明的一些实施例中,所述发送器,具体用于在所述单扇区联合反馈周期到来时向所述网络设备反馈各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码,在所述联合扇区联合反馈周期到来时向所述网络设备反馈各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
在本发明实施例中,用户设备可以同时估计得到多个单扇区的CQI,同时 估计得到多个联合扇区的CQI,降低了用户设备的复杂度,节约了用户设备的硬件资源,还可以通过不同的规则向网络设备反馈得到的每个CQI。
本发明第八方面提供了一种网络设备,所述网络设备应用于共小区通信系统,所述共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,即若一个小区包括两个单扇区,扇区1和扇区2,则有一个联合扇区,扇区1和扇区2联合服务的模式称为联合扇区,所述至少两个单扇区中的各单扇区用于单独为所述小区中的用户设备提供单扇区通信服务,属于ST模式,所述至少一个联合扇区中的各联合扇区用于为所述用户设备提供联合扇区通信服务,属于OT模式,所述网络设备包括:发送器和接收器。
所述发送器,用于向用户设备发射各单扇区的辅导频发射信号。
所述接收器,用于接收用户设备反馈的每个CQI,每个CQI用于所述网络设备确定目标扇区为用户设备提供通信服务。
可选的,本发明的一些实施例中,所述接收器,还用于接收所述用户设备反馈的表示所述每个CQI各自对应扇区的预编码。
可选的,本发明的一些实施例中,所述接收器,具体用于在所述各单扇区对应的反馈周期到来时接收所述用户设备反馈的所述各单扇区对应的CQI,在所述各联合扇区对应的反馈周期到来时接收所述用户设备反馈的所述各联合扇区对应的CQI。可选的,本发明的一些实施例中,所述接收器,具体用于在所述单扇区联合反馈周期到来时接收所述用户设备反馈的按照所述预定义联合编码规则编码的各单扇区的CQI,在所述联合扇区联合反馈周期到来时接收所述用户设备反馈的按照所述预定义联合编码规则编码的各联合扇区的CQI。
可选的,本发明的一些实施例中,所述接收器,具体用于所述网络设备在单扇区联合反馈周期到来时接收所述用户设备反馈的各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码,在联合扇区联合反馈周期到来时接收所述用户设备反馈的各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
在本发明实施例中,网络设备通过不同的规则接收用户设备反馈的每个CQI,并根据得到的每个CQI确定目标扇区为所述用户设备提供通信服务。
需要说明的是,本发的技术方案本质上或者说对现有技术做出贡献的部分 或者该技术方案的全部或部分可以以软件产口的形式体现出来,该计算机软件产品存储在一个存储介质中,第九方面,本发明实施例中提供了一种存储介质,该存储介质存储执行如下指令的程序:
用户设备接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号;所述用户设备根据所述各单扇区的辅导频接收信号和预先获知的所述各单扇区的辅导频发射信号估计出信道矩阵;所述用户设备根据所述信道矩阵和第一预编码矩阵估计出所述各单扇区的CQI,并根据所述信道矩阵和第二预编码矩阵估计出所述各联合扇区的CQI;所述用户设备向所述网络设备反馈每个CQI。
该存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
本发明第十方面提供一种共小区通信系统,包括用户设备和网络设备,所述共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,即若一个小区包括两个单扇区,扇区1和扇区2,则有一个联合扇区,扇区1和扇区2联合服务的模式称为联合扇区,所述至少两个单扇区中的各单扇区用于单独为所述小区中的用户设备提供单扇区通信服务,属于ST模式,所述至少一个联合扇区中的各联合扇区用于为所述用户设备提供联合扇区通信服务,属于OT模式。
所述用户设备为上述第三方面或第三方面任一可能的实现方式中所述的用户设备;
所述网络设备为上述第四方面或第四方面任一可能的实现方式中所述的网络设备。
从以上技术方案可以看出,本发明实施例具有以下优点:
本发明技术方案中,当用户设备处于共小区模式时,用户设备先根据各单扇区的辅导频接收信号以及对应各单扇区预先获知的辅导频发射信号估计出信道矩阵,再根据信道矩阵、第一预编码矩阵估计出各单扇区的CQI,一次性就得到了各单扇区的CQI,所以提高了用户设备的工作效率,节省了UE硬件资源,网络设备接收到各个CQI时,可根据不同CQI的值决定目标扇区为用 户设备提供通信服务。
附图说明
为了更清楚地说明本发明实施例技术方案,下面将对实施例和现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其它的附图。
图1为本发明实施例中信道质量指示(CQI)反馈的方法一个实施例示意图;
图2为本发明实施例中显示反馈方式示意图;
图3为本发明实施例中信道质量指示(CQI)反馈的方法另一个实施例示意图;
图4为本发明实施例中隐式反馈方式示意图;
图5为本发明实施例中信道质量指示(CQI)反馈的方法另一个实施例示意图;
图6为本发明实施例中隐式反馈方式下的联合编码规则反馈示意图;
图7为本发明实施例中信道质量指示(CQI)反馈的方法另一个实施例示意图;
图8为本发明实施例中隐式方式与显示方式结合的反馈方式示意图;
图9为本发明实施例中用户设备一个实施例示意图;
图10为本发明实施例中网络设备一个实施例示意图;
图11为本发明实施例中用户设备另一个实施例示意图;
图12为本发明实施例中网络设备另一个实施例示意图;
图13为本发明实施例中用户设备另一个实施例示意图;
图14为本发明实施例中网络设备另一个实施例示意图。
具体实施方式
本发明实施例提供了一种信道质量指示(CQI)反馈的方法、用户设备以及网络设备,用于降低用户设备的复杂度,节省了用户设备的硬件资源。
为了使本技术领域的人员更好地理解本发明方案,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分的实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都应当属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
在共小区通信系统中,包括用户设备和网络设备,其中,共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,至少两个单扇区中的各单扇区用于单独为小区中的用户设备提供单扇区通信服务,至少一个联合扇区中的各联合扇区用于为用户设备提供联合扇区通信服务,用户设备需要将扇区的CQI反馈给网络设备,由网络设备根据CQI决定哪个单扇区或者联合扇区为用户设备提供通信服务。
当UE处于共小区模式时,使用预编码在共小区网络中进行CQI估计,UE通过预编码矩阵,以及利用多输入多输出(multiple-input multiple-output,MIMO)的信道估计模块,即通过一次CQI估计,将单一传输(Single Transmission,ST)模式扇区1的CQI以及ST模式扇区2的CQI估计出来;通过另一次CQI估计,将全方位传输(Omni Transmission,OT)模式扇区1扇区2的联合CQI估计出来,UE通过2次估计,得到3个不同的CQI。
本发明实施例中,用户设备向网络设备反馈得到的每个CQI时,是根据不同的反馈规则反馈的,以便网络设备根据此规则得知各个CQI对应的是哪个扇区,需要说明的是,用户设备与网络设备之间的不同的反馈规则是双方定义好的规则,为便于理解,下面对本发明实施例中用户设备通过不同的规则向 网络设备反馈每个CQI实现的具体流程进行描述。
一、用户设备通过预编码规则向网络设备反馈每个CQI。请参阅图1,本发明实施例中信道质量指示(CQI)反馈的方法如下所述。
101、网络设备向用户设备发射各单扇区的辅导频发射信号。
本实施例中,网络设备包括网络控制器与基站,网络控制器(RNC)发送lub信令给基站(NodeB)配置共小区模式,RNC通过基站向用户设备UE发送无线资源控制信令RRC,使得用户设备处于共小区模式,在共小区模式通信系统中一个小区包括至少两个单扇区和至少一个联合扇区,网络设备给每一个单扇区配置一个辅导频,给每个联合扇区配置一个主导频,网络设备向用户设备发送各单扇区的辅导频发射信号。
例如:共小区通信系统中一个小区包括两个单扇区,分别为扇区1和扇区2,那么就有一个联合扇区,联合扇区一般为至少两个扇区共同覆盖的区域,网络设备给扇区1配置辅公共导频信道S-CPICH1,给扇区2配置辅公共导频信道S-CPICH2,给联合扇区配置主公共导频信道P-CPICH,网络设备向用户设备发射扇区1的辅导频发射信号s1和扇区2的辅导频发射信号s2,需要说明的是,在实际应用中,共小区通信系统中一个小区包括的扇区至少为两个。
102、用户设备接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号。
本实施例中,当网络设备向用户设备发射扇区1和扇区2的辅导频发射信号之后,扇区1的辅导频发射信号s1经过无线信道传输之后,被用户设备接收的扇区1的信号为辅导频接收信号y1,扇区2的辅导频发射信号s1经过无线信道传输之后,被用户设备接收的扇区2的信号为辅导频接收信号y2。
在本发明实施例中,用户设备根据各单扇区的辅导频接收信号、预先获知的各单扇区的辅导频发射信号和第一预编码矩阵估计出各单扇区的CQI,并根据各单扇区的辅导频接收信号、预先获知的各单扇区的辅导频发射信号和第二预编码矩阵估计出各联合扇区的CQI,实际上可以分为步骤103和104实现,具体如下所示:
103、用户设备根据各单扇区的辅导频接收信号和预先获知的各单扇区的辅导频发射信号估计出信道矩阵。
本实施例中,当用户设备接收扇区1的辅导频接收信号y1和扇区2的辅导频接收信号y2之后,需要说明的是,各单扇区的辅导频发射信号可以是通过协议规定的,也可以是通过网络下发消息设置的,网络设备和用户设备都预先已知,即扇区1和扇区2的辅导频发射信号s1和s2是一个已知量,用户设备可根据扇区1和扇区2的辅导频接收信号y1、y2和扇区1和扇区2的辅导频发射信号s1、s2通过如下公式(1-1)估计出信道矩阵H。
Figure PCTCN2015097834-appb-000001
  公式(1-1)
Figure PCTCN2015097834-appb-000002
  公式(1-2)
本发明实施例中,公式(1-1)中实际上包含的量不止辅导频接收信号,信道矩阵,辅导频发射信号,还有信号在传输的过程中噪声(N)、干扰(I)、能量的衰减等其他因素,这些因素都可在公式(1-1)适用,如公式(1-2)所示,公式(1-1)只是简洁表达式,并未列举出这些因素。后面的公式(1-3)、(1-4)都是简洁表达式。公式(1-1)中的H是信道矩阵,是待估计的一个量。
104、用户设备根据信道矩阵和第一预编码矩阵估计出各单扇区的CQI,并根据信道矩阵和第二预编码矩阵估计出各联合扇区的CQI。
本实施例中,如果NodeB用MIMO双流的模式来提供ST模式扇区1、扇区2的服务,即网络设备在扇区1发送的数据流为d1,在扇区2发送的数据流为d2,而且,NodeB使用第一预编码矩阵
Figure PCTCN2015097834-appb-000003
则UE接收到的信号如公式(1-3)所示:
Figure PCTCN2015097834-appb-000004
  公式(1-3)
使用这个假设之后,两个数据流的形式就和MIMO双流形式完全一样。这样,UE就可通过这个V1预编码,和MIMO接收机一样,估计出ST模式下两个扇区的CQI,d1经历的等效信道对应的结果,就是ST模式扇区1的CQI1,d2经历的等效信道对应的结果,就是ST模式扇区2的CQI2。
本实施例中,用户设备UE假设NodeB通过重用MIMO单流的模式来提供OT模式扇区1和扇区2的服务,即网络设备在扇区1和扇区2发送的数据流都为d1,而且,假设NodeB使用第二预编码矩阵
Figure PCTCN2015097834-appb-000005
则UE接收到的信号如公式(1-4)所示:
Figure PCTCN2015097834-appb-000006
  公式(1-4)
使用这个假设之后,这种OT模式的数据流d1和MIMO单流具有完全相同的形式,此处的单流可以理解成基于码本的波束成形(Beam Forming),UE可通过重用MIMO单流的接收机,并且使用
Figure PCTCN2015097834-appb-000007
的预编码,估计出扇区1、扇区2联合服务模式的CQI,d1经历的等效信道对应的结果,就是OT模式下联合扇区的CQI。
本发明实施例中,第一预编码矩阵不限定为
Figure PCTCN2015097834-appb-000008
一般为满足如下关系的n行n列复数矩阵U:UHU=UUH=En*a,其中,UH为U的共轭转置,En为n阶单位矩阵,a是常数,第二预编码矩阵也不限定
Figure PCTCN2015097834-appb-000009
一般为从满足上述关系的n行n列复数矩阵U中提取出来的列向量。
105、用户设备向网络设备反馈得到的每个CQI,向网络设备反馈表示每个CQI各自对应扇区的预编码。
本实施例中,UE估计出扇区1的CQI1、扇区2的CQI2、联合扇区的CQI3之后,需要向NodeB反馈,而且NodeB能将CQI所对应的扇区类型区分出来。所以,UE在反馈的时候,可以通过一种显式的方式指示CQI所对应的三种类型,包括ST模式扇区1,ST模式扇区2,OT模式联合扇区。例如,在反馈ST模式扇区1的CQI1时,还反馈一个指示信息,该指示信息为网络设备通过预编码规则编码的预编码,用于指示反馈的CQI对应的扇区,即预编码矩阵有多个,每个预编码矩阵都有个对应的序号,该序号与指示信息一一对应,NodeB收到这个指示信息后即知道这个CQI1的值是对应ST模式扇区1的值,这个指示信息可以采用预编码码本的方式指示,需要说明的是,预编码规则是网络设备与用户设备预先定义好的规则。
比如:预定义一个码本,码本中有三个不同的预编码,分别为第一预编码
Figure PCTCN2015097834-appb-000010
第二预编码
Figure PCTCN2015097834-appb-000011
第三预编码
Figure PCTCN2015097834-appb-000012
依次代表ST模式扇区1,ST模式扇区2,OT模式联合扇区。这三个码本可以通过2比特表示,依次为10,01,11。NodeB收到这个码本,确定通过三种模式中的哪种给UE提供服务。
本发明实施例中,这个2比特信息可以承载在高速专用物理控制信道(high speed dedicated physical control channel,HS-DPCCH)的PCI(Precoding Control Indication,预编码控制指示)域,当UE被配置成共小区接收模式的时候,HS-DPCCH的PCI域即具有上述的含义,这种显示反馈方式示意图如图2所示,实际应用中,预定义码本中的预编码不止三个,一般根据实际扇区的数量和联合扇区的数量决定。
106、网络设备接收用户设备反馈的每个CQI,接收用户设备反馈的表示每个CQI各自对应扇区的预编码,每个CQI用于网络设备确定目标扇区为用户设备提供通信服务。本实施例中,当用户设备将扇区1的CQI1,扇区2的CQI2,联合扇区的CQI3,以及各个信道质量指示对应的预编码反馈之后,网络设备接收扇区1的CQI1与第一预编码,扇区2的CQI2与第二预编码,联合扇区的CQI3与第三预编码,网络设备根据第一预编码知道CQI1是扇区1的信道质量指示,根据第二预编码知道CQI2是扇区2的信道质量指示,根据第三预编码知道CQI3是联合扇区的信道质量指示,网络设备可根据接收到的CQI1,CQI2,CQI3决定是扇区1、扇区2或者联合扇区为用户设备提供通信服务,比如:网络设备根据max(CQI1,CQI2,CQI3)来确定给UE提供的服务模式,若max(CQI1,CQI2,CQI3)=CQI1,则网络设备确定用信道质量指示为CQI1的扇区为UE提供通信服务,再根据第一预编码知道CQI1对应的扇区为扇区1,网络设备就分配扇区1为UE提供通信服务。
本发明实施例中,用户设备通过一次计算就可以得到两个单扇区的信道质量指示,应用了MIMO双流的传输技术,降低了用户设备的复杂度,节约了用户设备硬件资源,用户设备通过预编码规则反馈各个扇区的信道质量指示,应用了多输入多输出MIMO技术的PCI域,安全性比较好。
二、用户设备通过周期反馈规则向网络设备反馈每个CQI。请参阅图3, 本发明实施例中信道质量指示(CQI)反馈的方法另一个实施例如下描述。
301、网络设备向用户设备发射各单扇区的辅导频发射信号。
302、用户设备接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号。
303、用户设备根据各单扇区的辅导频接收信号和预先获知的各单扇区的辅导频发射信号估计出信道矩阵。
304、用户设备根据信道矩阵和第一预编码矩阵估计出各单扇区的CQI,并根据信道矩阵和第二预编码矩阵估计出各联合扇区的CQI。
本发明实施例中的步骤301至304与图1所示实施例中的步骤101至104相同,具体此处不作赘述。
305、用户设备在各单扇区对应的反馈周期到来时向网络设备反馈各单扇区对应的CQI,在各联合扇区对应的反馈周期到来时向网络设备反馈各联合扇区对应的CQI。
本实施例中,用户设备估计出扇区1的CQI1、扇区2的CQI2及联合扇区的CQI3之后,用户设备根据用户设备与网络设备之前预定义好的周期反馈规则反馈得到的各个CQI,例如,扇区1的CQI1在第1、第4、……第1+3n(n为整数)周期向网络设备反馈,扇区2的CQI2在第2、第5、……第2+3n(n为整数)周期向网络设备反馈,联合扇区的CQI3在第3、第6、……第3+3n(n为整数)周期向网络设备反馈,其中每个周期时长均为T1,该T1的时长可根据实际需要而定,这种反馈方式可称为隐式反馈方式,隐式反馈方式示意图如图4所示。
本发明实施例中,扇区1的CQI1,扇区2的CQI2和联合扇区的CQI3的反馈周期位置可以互补相同,也可以任意至少两个反馈周期位置相同,例如,也可以在第1、第4、……第1+3n(n为整数)周期向网络设备反馈扇区2的CQI2或者联合扇区的CQI3,具体不做限定。
306、网络设备在各单扇区对应的反馈周期到来时接收用户设备反馈的各单扇区对应的CQI,在各联合扇区对应的反馈周期到来时接收用户设备反馈的各联合扇区对应的CQI,每个CQI用于网络设备确定目标扇区为用户设备提供通信服务。
本实施例中,网络设备根据用户设备与网络设备之前预定义好的周期反馈规则得知,网络设备在第1、第4、……第1+3n(n为整数)周期接收到的CQI1就认为是扇区1的信道质量指示,在第2、第5、……第2+3n(n为整数)周期接收到的CQI2就认为是扇区2的信道质量指示,在第3、第6、……第3+3n(n为整数)周期接收到的CQI3就认为是联合扇区的信道质量指示,网络设备根据接收到的CQI1,CQI2,CQI3决定是扇区1、扇区2或者联合扇区为用户设备提供通信服务,比如:网络设备根据max(CQI1,CQI2,CQI3)来确定给UE提供的服务模式,若max(CQI1,CQI2,CQI3)=CQI2,则网络设备确定用信道质量指示为CQI2的扇区为UE提供通信服务,再根据接收的反馈周期知道CQI2对应的扇区为扇区2,网络设备就分配扇区2为UE提供通信服务。
本发明实施例中,用户设备通过和网络设备预先定义好的周期反馈规则来反馈各单扇区和各联合扇区的信道质量指示,网络设备根据周期反馈规则得知每个反馈周期对应的哪个扇区,用户设备反馈信道质量指示时,不用反馈对应的扇区指示信息,节约了网络资源。
三、用户设备通过周期反馈规则以及预定义联合编码规则向网络设备反馈每个CQI。请参阅图5,本发明实施例中信道质量指示(CQI)反馈的方法另一个实施例如下。
501、网络设备向用户设备发射各单扇区的辅导频发射信号。
502、用户设备接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号。
503、用户设备根据各单扇区的辅导频接收信号和预先获知的各单扇区的辅导频发射信号估计出信道矩阵。
504、用户设备根据信道矩阵和第一预编码矩阵估计出各单扇区的CQI,并根据信道矩阵和第二预编码矩阵估计出各联合扇区的CQI。
本发明实施例中的步骤501至504与图1所示实施例中的步骤101至104相同,具体此处不作赘述。
505、用户设备在单扇区联合反馈周期到来时向网络设备反馈按照预定义联合编码规则编码的各单扇区的CQI,在联合扇区联合反馈周期到来时向网络 设备反馈按照预定义联合编码规则编码的各联合扇区的CQI。
本实施例中,当用户设备估计出扇区1的CQI1,扇区2的CQI2,联合扇区的CQI3时,用户设备可以根据预定义联合编码规则将扇区1的CQI1和扇区2的CQI2进行预定义联合编码,需要说明的是,预定义联合编码规则、周期反馈规则是网络设备与用户设备预先定义好的规则,预定义联合编码规则举例说明,当用户设备进行预定义联合编码时,若一次编码有4个比特位a1,a2,a3,a4,则定义高比特位为a1,a2,低比特位为a3,a4,也可以定义高比特位为a3,a4,低比特位为a1,a2,此处,定义高比特位a1,a2是扇区1的CQI1,低比特位a3,a4是扇区2的CQI2,用户设备根据周期反馈规则在第1、第3、……第1+2n(n为整数)周期时,用户设备可以向网络设备反馈扇区1与扇区2联合编码的信道质量指示,用户设备根据周期反馈规则在第2、第4、……第2+2n(n为整数)周期时,用户设备可以向网络设备反馈联合扇区的信道质量指示,其中每个周期时长均为T1,这种反馈方式称为隐式反馈方式下的联合编码规则反馈示意图,示意图如图6所示。
本发明实施例中,预定义联合编码规则也可以是高比特位为扇区2的CQI2,低比特位为扇区1的CQI1,当有多个扇区时,预定义联合编码规则可以是:例如,1至5个比特位编码的是扇区1的CQI1,6至10个比特位编码的是扇区2的CQI2,11至15个比特位编码的是扇区3的CQI3,以此类推,假如有三个单扇区,那么联合扇区就有三个,分别为扇区1与扇区2联合,为第一联合扇区,扇区2与扇区3联合,为第二联合扇区,扇区1、扇区2、扇区3联合,为第三联合扇区,编码时,第一联合扇区的CQI为1至5个比特位,6至10个比特位为第二扇区的CQI,11至15个比特位为第三联合扇区的CQI,此处举例的是多个联合扇区的预定义联合编码规则,多个单扇区的预定义联合编码规则也是类似的。
506、网络设备在单扇区联合反馈周期到来时接收用户设备反馈的按照预定义联合编码规则编码的各单扇区的CQI,在联合扇区联合反馈周期到来时接收用户设备反馈的按照预定义联合编码规则编码的各联合扇区的CQI,每个CQI用于网络设备确定目标扇区为用户设备提供通信服务。
本实施例中,网络设备根据周期反馈规则得知,在第1、第3、……第1+2n (n为整数)周期接收到的扇区1和扇区2联合编码的CQI,网络设备解码后,根据预定义联合编码规则得知高比特位的CQI1为扇区1的信道质量指示,低比特位的CQI2为扇区2的信道质量指示,在第2、第4、……第2+2n(n为整数)周期接收到联合扇区的CQI,网络设备确定根据接收到的CQI1,CQI2,CQI3决定是扇区1、扇区2或者联合扇区为用户设备提供通信服务,比如:网络设备根据max(CQI1,CQI2,CQI3)来确定给UE提供的服务模式,若max(CQI1,CQI2,CQI3)=CQI1,则网络设备确定用信道质量指示为CQI1的扇区为UE提供通信服务,根据周期反馈规则知道在在第1、第3、……第1+2n(n为整数)周期接收到的是扇区1和扇区2联合编码的CQI,网络设备再根据预定义联合编码规则知道高比特位CQI1对应的扇区为扇区1,分配扇区1为UE提供通信服务。本发明实施例中,用户设备先根据预定义联合编码规则,对扇区1和扇区2的CQI进行联合编码,再根据周期反馈规则反馈扇区1和扇区2联合编码的CQI,以及联合扇区的CQI,网络设备根据预定义联合编码规则以及周期反馈规则得知对应CQI以及每个CQI对应的扇区指示信息,这样反馈的CQI和扇区指示信息既降低了用户设备的复杂度,又提高了扇区指示信息的安全性。
四、用户设备通过预编码规则和周期反馈规则向网络设备反馈每个CQI。
请参阅图7,本发明实施例中信道质量指示(CQI)反馈的方法另一个实施例如下。
701、网络设备向用户设备发射各单扇区的辅导频发射信号。
702、用户设备接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号。
703、用户设备根据各单扇区的辅导频接收信号和预先获知的各单扇区的辅导频发射信号估计出信道矩阵。
704、用户设备根据信道矩阵和第一预编码矩阵估计出各单扇区的CQI,并根据信道矩阵和第二预编码矩阵估计出各联合扇区的CQI。
本发明实施例中的步骤701至704与图1所示实施例中的步骤101至104相同,具体此处不作赘述。
705、用户设备在单扇区联合反馈周期到来时向网络设备反馈各单扇区的 CQI,以及表示各单扇区的CQI各自对应单扇区的预编码,在联合扇区联合反馈周期到来时向网络设备反馈各联合扇区的CQI,以及表示各联合扇区的CQI各自对应联合扇区的预编码。
本实施例中,当用户设备估计出扇区1的CQI1,扇区2的CQI2,联合扇区的CQI3时,用户设备根据预编码规则预定义一个码本,码本中有三个不同的预编码,分别为第一预编码
Figure PCTCN2015097834-appb-000013
第二预编码
Figure PCTCN2015097834-appb-000014
第三预编码
Figure PCTCN2015097834-appb-000015
依次代表ST模式扇区1,ST模式扇区2,OT模式联合扇区,这三个码本可以通过2比特表示,依次为10,01,11,NodeB收到这个码本,确定通过三种模式中的哪种给UE提供服务,第一预编码用来指示CQI1为第一扇区的信道质量指示,第二预编码用来指示CQI2为第二扇区的信道质量指示,第三预编码用来指示CQI3为联合扇区的信道质量指示。
用户设备再根据周期反馈规则在第1、第3、……第1+2n(n为整数)周期时,向网络设备反馈扇区1的CQI1和扇区2的CQI2,以及扇区1对应的第一预编码、扇区2对应的第二预编码,在第2、第4、……第2+2n(n为整数)周期时,向网络设备反馈联合扇区的CQI3,以及对应的第三预编码,其中每个周期时长均为T1,需要说明的是,预编码规则与周期反馈规则是用户设备与网络设备预先定义好的规则,这种反馈方式为隐式方式与显示方式结合的反馈方式,示意图如图8所示。
706、网络设备在单扇区联合反馈周期到来时接收用户设备反馈的各单扇区的CQI,以及表示各单扇区的CQI各自对应单扇区的预编码,在联合扇区联合反馈周期到来时接收用户设备反馈的各联合扇区的CQI,以及表示各联合扇区的CQI各自对应联合扇区的预编码,每个CQI用于网络设备确定目标扇区为用户设备提供通信服务。本实施例中,网络设备根据周期反馈规则得知,在第1、第3、……第1+2n(n为整数)周期接收用户设备反馈的是扇区1的CQI1以及扇区1对应的第一预编码,扇区2的CQI2以及扇区2对应的第二预编码,在第2、第4、……第2+2n(n为整数)周期接收到联合扇区的CQI3,联合扇区对应的第三预编码,其中每个周期时长均为T1,网络设备再根据预编码规则得知,第一预编码对应的CQI1为扇区1的信道质量指示,第二预编码对应的CQI2为扇区2的信道质量指示,第三预编码对应的CQI3为扇区3的信道质量指示,网络设备由接收到的CQI1,CQI2,CQI3决定是扇区1、扇 区2或者联合扇区为用户设备提供通信服务,比如:网络设备根据max(CQI1,CQI2,CQI3)来确定给UE提供的服务模式,若max(CQI1,CQI2,CQI3)=CQI3,则网络设备由周期反馈规则确定在第2、第4、……第2+2n(n为整数)周期接收到的信道质量指示为联合扇区的,再根据第三预编码知道CQI3对应的扇区为联合扇区,网络设备就分配联合扇区为UE提供通信服务。
本发明实施例中,当用户设备分周期发送得到的各个CQI时,用户设备的负载降低,而用户设备反馈的每个CQI对应一个预编码,又保证了信息传输的可靠性,网络设备可通过预编码规则与周期反馈规则得知每个CQI对应的扇区信息。
上面对本发明实施例中的信道质量指示(CQI)反馈的方法进行了描述,下面对本发明实施例中的用户设备进行描述,用户设备应用于共小区通信系统,共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,至少两个单扇区中的各单扇区用于单独为小区中的用户设备提供单扇区通信服务,至少一个联合扇区中的各联合扇区用于为用户设备提供联合扇区通信服务。
请参阅图9,本发明实施例中用户设备一个实施例包括:接收模块901,估计模块902和反馈模块903。
所述接收模块901,用于接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号。
所述估计模块902,用于根据所述接收模块901接收的各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第一预编码矩阵估计出所述各单扇区的CQI,并根据所述接收模块901接收的各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第二预编码矩阵估计出所述各联合扇区的CQI。
所述反馈模块903,用于向所述网络设备反馈所述估计模块902估计的每个CQI。
可选的,本发明的一些实施例中,所述反馈模块903,还用于向所述网络设备反馈表示每个CQI各自对应扇区的预编码。
可选的,本发明的一些实施例中,所述反馈模块903,具体用于在各单扇 区对应的反馈周期到来时向网络设备反馈各单扇区对应的CQI,在各联合扇区对应的反馈周期到来时向网络设备反馈各联合扇区对应的CQI。
可选的,本发明的一些实施例中,所述反馈模块903,具体用于在单扇区联合反馈周期到来时向网络设备反馈按照预定义联合编码规则编码的各单扇区的CQI,在联合扇区联合反馈周期到来时向网络设备反馈按照预定义联合编码规则编码的各联合扇区的CQI。
可选的,本发明的一些实施例中,所述反馈模块903,具体用于在单扇区联合反馈周期到来时向网络设备反馈各单扇区的CQI,以及表示各单扇区的CQI各自对应单扇区的预编码,在联合扇区联合反馈周期到来时向网络设备反馈各联合扇区的CQI,以及表示各联合扇区的CQI各自对应联合扇区的预编码。
本发明实施例中,用户设备可以同时估计得到多个单扇区的CQI,同时估计得到多个联合扇区的CQI,降低了用户设备的复杂度,节约了用户设备的硬件资源,还可以通过不同的规则向网络设备反馈得到的每个CQI。
下面对本发明实施例中的网络设备进行描述,网络设备应用于共小区通信系统,共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,至少两个单扇区中的各单扇区用于单独为小区中的用户设备提供单扇区通信服务,至少一个联合扇区中的各联合扇区用于为用户设备提供联合扇区通信服务,请参阅图10,本发明实施例中网络设备一个实施例包括:发射模块1001和接收模块1002。
所述发射模块1001,用于向用户设备发射各单扇区的辅导频发射信号。
所述接收模块1002,用于接收用户设备反馈的每个CQI,每个CQI用于所述网络设备确定目标扇区为用户设备提供通信服务。
可选的,本发明的一些实施例中,所述接收模块1002,还用于接收用户设备反馈表示每个CQI各自对应扇区的预编码。
可选的,本发明的一些实施例中,所述接收模块1002,具体用于在各单扇区对应的反馈周期到来时接收用户设备反馈的各单扇区对应的CQI,在各联合扇区对应的反馈周期到来时接收用户设备反馈的各联合扇区对应的CQI。
可选的,本发明的一些实施例中,所述接收模块1002,具体用于在单扇 区联合反馈周期到来时接收用户设备反馈的按照预定义联合编码规则编码的各单扇区的CQI,在联合扇区联合反馈周期到来时接收用户设备反馈的按照所预定义联合编码规则编码的各联合扇区的CQI。
可选的,本发明的一些实施例中,所述接收模块1002,具体用于网络设备在单扇区联合反馈周期到来时接收用户设备反馈的各单扇区的CQI,以及表示各单扇区的CQI各自对应单扇区的预编码,在联合扇区联合反馈周期到来时接收用户设备反馈的各联合扇区的CQI,以及表示各联合扇区的CQI各自对应联合扇区的预编码。
本发明实施例中,网络设备通过不同的规则接收用户设备反馈的每个CQI,并根据得到的每个CQI确定目标扇区为所述用户设备提供通信服务。上面从模块化功能实体的角度对本发明实施例中的用户设备和网络设备进行了描述,下面从硬件处理的角度对本发明实施例中的用户设备和网络设备进行描述。
请参阅图11,本发明实施例中用户设备另一个实施例包括:射频模块1101、天线1102、处理器1103、总线1104以及存储器1105;射频模块1101与天线1102连接;射频模块1101、处理器1103以及存储器1105通过总线1104连接;射频模块1101通过天线1102接收各单扇区的辅导频接收信号。
所述射频模块1101执行如下功能:
接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号。
所述处理器1103执行如下功能:
根据所述各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第一预编码矩阵估计出所述各单扇区的CQI,并根据所述各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第二预编码矩阵估计出所述各联合扇区的CQI;向所述网络设备反馈每个CQI。
在本发明的一些实施例中,所述处理器1103还用于执行以下功能:
向所述网络设备反馈表示所述每个CQI各自对应扇区的预编码。
在本发明的一些实施例中,所述处理器1103具体用于执行以下功能:
在所述各单扇区对应的反馈周期到来时向所述网络设备反馈所述各单扇 区对应的CQI,在所述各联合扇区对应的反馈周期到来时向所述网络设备反馈所述各联合扇区对应的CQI。
在本发明的一些实施例中,所述处理器1103具体用于执行以下功能:
在所述单扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各单扇区的CQI,在所述联合扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各联合扇区的CQI。
在本发明的一些实施例中,所述处理器1103具体用于执行以下功能:
在所述单扇区联合反馈周期到来时向所述网络设备反馈各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码,在所述联合扇区联合反馈周期到来时向所述网络设备反馈各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
本发明实施例中,用户设备可以同时估计得到多个单扇区的CQI,同时估计得到多个联合扇区的CQI,降低了用户设备的复杂度,节约了用户设备的硬件资源,还可以通过不同的规则向网络设备反馈得到的每个CQI。
请参阅图12,本发明实施例中网络设备另一个实施例包括:射频模块1201、天线1202、处理器1203、总线1204以及存储器1205;射频模块1201与天线1202连接;射频模块1201、处理器1203以及存储器1205通过总线1202连接;射频模块1201通过天线1202发射各单扇区的辅导频发射信号。
所述射频模块1201执行如下功能:
向所述用户设备发射所述各单扇区的辅导频发射信号。
所述处理器1203执行如下功能:
接收所述用户设备反馈的每个CQI,所述每个CQI用于所述网络设备确定目标扇区为所述用户设备提供通信服务。
在本发明的一些实施例中,所述处理器1203还用于执行以下功能:
接收所述用户设备反馈的表示所述每个CQI各自对应扇区的预编码。
在本发明的一些实施例中,所述处理器1203具体用于执行以下功能:
在所述各单扇区对应的反馈周期到来时接收所述用户设备反馈的所述各单扇区对应的CQI,在所述各联合扇区对应的反馈周期到来时接收所述用户设备反馈的所述各联合扇区对应的CQI。在本发明的一些实施例中,所述处理器 1203具体用于执行以下功能:
在所述单扇区联合反馈周期到来时接收所述用户设备反馈的按照所述预定义联合编码规则编码的各单扇区的CQI,在所述联合扇区联合反馈周期到来时接收所述用户设备反馈的按照所述预定义联合编码规则编码的各联合扇区的CQI。
在本发明的一些实施例中,所述处理器1203具体用于执行以下功能:
所述网络设备在单扇区联合反馈周期到来时接收所述用户设备反馈的各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码,在联合扇区联合反馈周期到来时接收所述用户设备反馈的各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
本发明实施例中,网络设备通过不同的规则接收用户设备反馈的每个CQI,并根据得到的每个CQI确定目标扇区为所述用户设备提供通信服务。
请参阅图13,本发明实施例中用户设备一个实施例包括:接收器1301,处理器1302和发送器1303。
所述接收器1301,用于接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号;
所述处理器1302,用于根据所述接收器1301接收的所述各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第一预编码矩阵估计出所述各单扇区的CQI,并根据所述接收器1301接收的所述各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第二预编码矩阵估计出所述各联合扇区的CQI。
所述发送器1303,用于向网络设备反馈每个CQI。
可选的,本发明的一些实施例中,所述发送器1303,还用于向所述网络设备反馈表示所述每个CQI各自对应扇区的预编码。
可选的,本发明的一些实施例中,所述发送器1303,具体用于在所述各单扇区对应的反馈周期到来时向所述网络设备反馈所述各单扇区对应的CQI,在所述各联合扇区对应的反馈周期到来时向所述网络设备反馈所述各联合扇区对应的CQI。
可选的,本发明的一些实施例中,所述发送器1303,具体用于在所述单 扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各单扇区的CQI,在所述联合扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各联合扇区的CQI。
可选的,本发明的一些实施例中,所述发送器1303,具体用于在所述单扇区联合反馈周期到来时向所述网络设备反馈各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码,在所述联合扇区联合反馈周期到来时向所述网络设备反馈各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
本发明实施例中,用户设备可以同时估计得到多个单扇区的CQI,同时估计得到多个联合扇区的CQI,降低了用户设备的复杂度,节约了用户设备的硬件资源,还可以通过不同的规则向网络设备反馈得到的每个CQI。下面对本发明实施例中的网络设备进行描述,网络设备应用于共小区通信系统,共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,至少两个单扇区中的各单扇区用于单独为小区中的用户设备提供单扇区通信服务,至少一个联合扇区中的各联合扇区用于为用户设备提供联合扇区通信服务,请参阅图14,本发明实施例中网络设备一个实施例包括:发送器1401和接收器1402。
所述发送器1401,用于向用户设备发射各单扇区的辅导频发射信号。
所述接收器1402,用于接收用户设备反馈的每个CQI,每个CQI用于所述网络设备确定目标扇区为用户设备提供通信服务。
可选的,本发明的一些实施例中,所述接收器1402,还用于接收所述用户设备反馈的表示所述每个CQI各自对应扇区的预编码。
可选的,本发明的一些实施例中,所述接收器1402,具体用于在所述各单扇区对应的反馈周期到来时接收所述用户设备反馈的所述各单扇区对应的CQI,在所述各联合扇区对应的反馈周期到来时接收所述用户设备反馈的所述各联合扇区对应的CQI。可选的,本发明的一些实施例中,所述接收器1402,具体用于在所述单扇区联合反馈周期到来时接收所述用户设备反馈的按照所述预定义联合编码规则编码的各单扇区的CQI,在所述联合扇区联合反馈周期到来时接收所述用户设备反馈的按照所述预定义联合编码规则编码的各联合扇区的CQI。
可选的,本发明的一些实施例中,所述接收器1402,具体用于所述网络设备在单扇区联合反馈周期到来时接收所述用户设备反馈的各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码,在联合扇区联合反馈周期到来时接收所述用户设备反馈的各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
本发明实施例中,网络设备通过不同的规则接收用户设备反馈的每个CQI,并根据得到的每个CQI确定目标扇区为所述用户设备提供通信服务。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统,装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统,装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储 介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (20)

  1. 一种信道质量指示(CQI)反馈的方法,其特征在于,所述方法应用于共小区通信系统,所述共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,所述至少两个单扇区中的各单扇区用于单独为所述小区中的用户设备提供单扇区通信服务,所述至少一个联合扇区中的各联合扇区用于为所述用户设备提供联合扇区通信服务,所述方法包括:
    所述用户设备接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号;
    所述用户设备根据所述各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第一预编码矩阵估计出所述各单扇区的CQI,并根据所述各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第二预编码矩阵估计出所述各联合扇区的CQI;
    所述用户设备向所述网络设备反馈每个CQI。
  2. 根据权利要求1所述的方法,其特征在于,所述用户设备向所述网络设备反馈每个CQI时,所述方法还包括:
    所述用户设备向所述网络设备反馈表示所述每个CQI各自对应扇区的预编码。
  3. 根据权利要求1所述的方法,其特征在于,所述用户设备向所述网络设备反馈每个CQI包括:
    所述用户设备在所述各单扇区对应的反馈周期到来时向所述网络设备反馈所述各单扇区对应的CQI;
    所述用户设备在所述各联合扇区对应的反馈周期到来时向所述网络设备反馈所述各联合扇区对应的CQI。
  4. 根据权利要求1所述的方法,其特征在于,所述用户设备向所述网络设备反馈每个CQI包括:
    所述用户设备在所述单扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各单扇区的CQI;
    所述用户设备在所述联合扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各联合扇区的CQI。
  5. 根据权利要求1所述的方法,其特征在于,所述用户设备向所述网络设备反馈每个CQI包括:
    所述用户设备在所述单扇区联合反馈周期到来时向所述网络设备反馈各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码;
    所述用户设备在所述联合扇区联合反馈周期到来时向所述网络设备反馈各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
  6. 一种信道质量指示(CQI)接收的方法,其特征在于,所述方法应用于共小区通信系统,所述共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,所述至少两个单扇区中的各单扇区用于单独为所述小区中的用户设备提供单扇区通信服务,所述至少一个联合扇区中的各联合扇区用于为所述用户设备提供联合扇区通信服务,所述方法包括:
    网络设备向所述用户设备发射所述各单扇区的辅导频发射信号;
    所述网络设备接收所述用户设备反馈的每个CQI,所述每个CQI用于所述网络设备确定目标扇区为所述用户设备提供通信服务。
  7. 根据权利要求6所述的方法,其特征在于,所述网络设备接收所述用户设备反馈的每个CQI时,所述方法包括:
    所述网络设备接收所述用户设备反馈的表示所述每个CQI各自对应扇区的预编码。
  8. 根据权利要求6所述的方法,其特征在于,所述网络设备接收所述用户设备反馈的每个CQI包括:
    所述网络设备在所述各单扇区对应的反馈周期到来时接收所述用户设备反馈的所述各单扇区对应的CQI;所述网络设备在所述各联合扇区对应的反馈周期到来时接收所述用户设备反馈的所述各联合扇区对应的CQI。
  9. 根据权利要求6所述的方法,其特征在于,所述网络设备接收所述用户设备反馈的每个CQI包括:
    所述网络设备在所述单扇区联合反馈周期到来时接收所述用户设备反馈的按照所述预定义联合编码规则编码的各单扇区的CQI;
    所述网络设备在所述联合扇区联合反馈周期到来时接收所述用户设备反 馈的按照所述预定义联合编码规则编码的各联合扇区的CQI。
  10. 根据权利要求6所述的方法,其特征在于,所述网络设备接收所述用户设备反馈的每个CQI包括:
    所述网络设备在单扇区联合反馈周期到来时接收所述用户设备反馈的各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码;
    所述网络设备在联合扇区联合反馈周期到来时接收所述用户设备反馈的各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
  11. 一种用户设备,其特征在于,所述用户设备应用于共小区通信系统,所述共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,所述至少两个单扇区中的各单扇区用于单独为所述小区中的用户设备提供单扇区通信服务,所述至少一个联合扇区中的各联合扇区用于为所述用户设备提供联合扇区通信服务,包括:
    接收模块,用于接收由网络设备发射的各单扇区的辅导频发射信号,经过无线信道传输之后的各单扇区的辅导频接收信号;
    估计模块,用于根据所述接收模块接收的各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第一预编码矩阵估计出所述各单扇区的CQI,并根据所述接收模块接收的各单扇区的辅导频接收信号、预先获知的所述各单扇区的辅导频发射信号和第二预编码矩阵估计出所述各联合扇区的CQI;
    反馈模块,用于向所述网络设备反馈所述估计模块估计的每个CQI。
  12. 根据权利要求11所述的用户设备,其特征在于,
    所述反馈模块,还用于向所述网络设备反馈表示所述每个CQI各自对应扇区的预编码。
  13. 根据权利要求11所述的用户设备,其特征在于,
    所述反馈模块,具体用于在所述各单扇区对应的反馈周期到来时向所述网络设备反馈所述各单扇区对应的CQI,在所述各联合扇区对应的反馈周期到来时向所述网络设备反馈所述各联合扇区对应的CQI。
  14. 根据权利要求11所述的用户设备,其特征在于,
    所述反馈模块,具体用于在所述单扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各单扇区的CQI,在所述联合扇区联合反馈周期到来时向所述网络设备反馈按照所述预定义联合编码规则编码的各联合扇区的CQI。
  15. 根据权利要求11所述的用户设备,其特征在于,
    所述反馈模块,具体用于在所述单扇区联合反馈周期到来时向所述网络设备反馈各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码,在所述联合扇区联合反馈周期到来时向所述网络设备反馈各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
  16. 一种网络设备,其特征在于,所述网络设备应用于共小区通信系统,所述共小区通信系统中的一个小区包括至少两个单扇区和至少一个联合扇区,所述至少两个单扇区中的各单扇区用于单独为所述小区中的用户设备提供单扇区通信服务,所述至少一个联合扇区中的各联合扇区用于为所述用户设备提供联合扇区通信服务,包括:
    发射模块,用于向所述用户设备发射所述各单扇区的辅导频发射信号;
    接收模块,用于接收所述用户设备反馈的每个CQI,所述每个CQI用于所述网络设备确定目标扇区为所述用户设备提供通信服务。
  17. 根据权利要求16所述的网络设备,其特征在于,
    所述接收模块,还用于接收所述用户设备反馈的表示所述每个CQI各自对应扇区的预编码。
  18. 根据权利要求16所述的网络设备,其特征在于,
    所述接收模块,具体用于在所述各单扇区对应的反馈周期到来时接收所述用户设备反馈的所述各单扇区对应的CQI,在所述各联合扇区对应的反馈周期到来时接收所述用户设备反馈的所述各联合扇区对应的CQI。
  19. 根据权利要求16所述的网络设备,其特征在于,
    所述接收模块,具体用于在所述单扇区联合反馈周期到来时接收所述用户设备反馈的按照所述预定义联合编码规则编码的各单扇区的CQI,在所述联合扇区联合反馈周期到来时接收所述用户设备反馈的按照所述预定义联合编码规则编码的各联合扇区的CQI。
  20. 根据权利要求16所述的网络设备,其特征在于,
    所述接收模块,具体用于所述网络设备在单扇区联合反馈周期到来时接收所述用户设备反馈的各单扇区的CQI,以及表示所述各单扇区的CQI各自对应单扇区的预编码,在联合扇区联合反馈周期到来时接收所述用户设备反馈的各联合扇区的CQI,以及表示所述各联合扇区的CQI各自对应联合扇区的预编码。
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