WO2014166388A1 - 协作发射集的确定方法和基站 - Google Patents

协作发射集的确定方法和基站 Download PDF

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Publication number
WO2014166388A1
WO2014166388A1 PCT/CN2014/074986 CN2014074986W WO2014166388A1 WO 2014166388 A1 WO2014166388 A1 WO 2014166388A1 CN 2014074986 W CN2014074986 W CN 2014074986W WO 2014166388 A1 WO2014166388 A1 WO 2014166388A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
correction
transmission
cell
base station
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PCT/CN2014/074986
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English (en)
French (fr)
Inventor
易雄书
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020157030072A priority Critical patent/KR101729594B1/ko
Priority to JP2016506768A priority patent/JP6208845B2/ja
Publication of WO2014166388A1 publication Critical patent/WO2014166388A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems

Definitions

  • Embodiments of the present invention relate to the field of communication technologies, and more particularly, to a method and a base station for determining a coordinated transmission set. Background technique
  • Joint Transmission (JT) technology as a kind of Coordinative Multiple Point (CoMP) technology, can significantly increase the average throughput at the cell edge.
  • the base station determines the CoMP coordinated transmission set according to the deployment situation and does not change, or based on the measurement information reported by the user equipment (UE) (such as the received power of the reference signal (Reference) Signal Receiving Power (RSRP) or Channel Quality Indicator (CQI), etc. to determine the CoMP collaborative emission set.
  • UE user equipment
  • RSRP Reference Signal Receiving Power
  • CQI Channel Quality Indicator
  • Embodiments of the present invention provide a method and a base station for determining a coordinated transmit set, which can more reasonably determine a cooperative transmit set for performing JT coherent transmission on a user equipment, and improve the gain of the joint transmit signal.
  • a method for determining a coordinated transmission set comprising: acquiring a first coordinated transmission set of a user equipment, and acquiring at least one first correction set, each of the at least one first correction set A calibration set includes at least two cells, of the at least two cells Joint channel correction has been completed between any two cells, the first coordinated transmission set comprising a set of at least one cell providing cooperative transmission for the user equipment; according to the first coordinated transmission set of the user equipment and the at least Determining, by the first calibration set, a second coordinated transmission set of the user equipment; performing joint transmission on the user equipment according to the second coordinated transmission set of the user equipment
  • the at least one first calibration set is a first calibration set
  • the first coordinated emission set and the at least one according to the user equipment Determining, by the first correction set, the second coordinated transmission set of the user equipment, comprising: determining an intersection of the first coordinated transmission set of the user equipment and the one first correction set as a second coordinated transmission of the user equipment set.
  • the at least one first calibration set is a plurality of first calibration sets
  • the first according to the user equipment Determining, by the coordinated transmission set and the at least one first correction set, the second coordinated transmission set of the user equipment, comprising: determining a union of the plurality of first correction sets as a second correction set; An intersection of the first coordinated transmit set and the second corrected set is determined to be a second coordinated transmit set of the user equipment.
  • the acquiring the at least one first calibration set includes: acquiring at least one first calibration that includes the user equipment serving cell set.
  • the acquiring the at least one first calibration set includes: acquiring the at least one first calibration set from a network controller Or acquiring the at least one first correction set from the base station of the reference cell, where the reference cell is a cell in the first coordinated transmission set of the user equipment.
  • Performing JT coherent transmission on the user equipment according to the second coordinated transmission set of the user equipment including: performing JT coherent transmission on the user equipment according to an intersection of the second coordinated transmission sets respectively corresponding to the multiple user equipments .
  • the first coordinated transmission set of the user equipment is a static cooperative transmission set or a semi-static cooperative transmission set or a dynamic cooperative transmission set.
  • a base station in a second aspect, includes: an acquiring unit, configured to acquire a first coordinated transmission set of the user equipment, and acquire at least one first correction set, each of the at least one first correction set A calibration set includes at least two cells, and joint channel correction has been completed between any two of the at least two cells, the first coordinated transmission set including at least one cell that provides coordinated transmission of the user equipment a determining unit, configured to determine, according to the first coordinated transmission set of the user equipment and the at least one first correction set acquired by the acquiring unit, a second coordinated transmission set of the user equipment; Performing JT coherent transmission on the user equipment according to the second coordinated transmission set of the user equipment determined by the determining unit.
  • the determining unit is specifically configured to: obtain, by the acquiring unit, a first coordinated emission set of the user equipment and the first first calibration set The intersection is determined to be a second coordinated set of transmissions of the user equipment.
  • the determining unit is specifically configured to: combine the plurality of first correction sets acquired by the acquiring unit Determining as a second correction set; determining, by the acquiring unit, an intersection of the first coordinated transmission set and the second correction set of the user equipment as a second coordinated transmission of the user equipment, in combination with the second aspect or
  • the acquiring unit is specifically configured to: acquire, at least one first calibration set that includes the user equipment serving cell.
  • the acquiring unit is specifically configured to: obtain the at least one first calibration set from a network controller; or specifically Obtaining, by the base station of the reference cell, the at least one first correction set, where the reference cell is a cell in a first coordinated transmission set of the user equipment.
  • the transmitting unit is specifically configured to: the multiple acquired according to the acquiring unit The intersection of the second coordinated transmission sets corresponding to the user equipments respectively performs JT coherent transmission on the user equipment.
  • the first coordinated transmission set of the user equipment is a static collaborative emission set or a semi-static cooperative emission set or a dynamic collaborative emission set.
  • the base station not only acquires the first coordinated transmission set of the user equipment, but also considers the case that the joint channel correction needs to be completed between multiple cells in the JT coherent transmission, and acquires at least one first correction set that has completed the joint channel correction. Therefore, determining the second coordinated transmission set according to the first coordinated transmission set of the user equipment and the at least one first correction set to perform JT coherent transmission on the user equipment can improve the gain of the joint transmission signal.
  • FIG. 1 is a flow chart of a method of determining a coordinated transmit set of an embodiment of the present invention.
  • FIG. 2 is a schematic flow chart of a process of a method for determining a coordinated transmission set according to an embodiment of the present invention.
  • FIG. 3 is a structural block diagram of a base station according to an embodiment of the present invention.
  • FIG. 4 is a block diagram showing the structure of a base station according to another embodiment of the present invention.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband code division multiple access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB, NB) in WCDMA or a base station (Base Station, BS) in UMTS, or It is an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, etc., and the present invention is not limited thereto.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • BS Base Station
  • BS Base Station
  • It is an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, etc., and the present invention is not limited thereto.
  • the network controller can be a base station controller, such as a base station controller in GSM or CDMA
  • BSC Base Station Controller
  • RNC Radio Network Controller
  • eNB evolved base station
  • e-NodeB evolved base station
  • UE User equipment
  • Mobile Terminal Mobile Terminal
  • a mobile user equipment may communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network).
  • the user equipment may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle,
  • the wireless access network exchanges languages and/or data.
  • FIG. 1 is a flow chart of a method of determining a coordinated transmit set of an embodiment of the present invention. The method of Figure 1 is performed by a base station.
  • each first correction set in the at least one first correction set includes at least two cells, where the at least two Joint channel correction has been completed between any two of the cells, the first coordinated transmission set comprising a set of at least one cell providing coordinated transmissions for the user equipment.
  • the base station not only acquires the first coordinated transmission set of the user equipment, but also considers the case that the joint channel correction needs to be completed between multiple cells in the JT coherent transmission, and acquires at least one first correction set that has completed the joint channel correction. Therefore, determining the second coordinated transmission set according to the first coordinated transmission set of the user equipment and the at least one first correction set to perform JT coherent transmission on the user equipment can improve the gain of the joint transmission signal.
  • the first coordinated transmission set of the user equipment may be a static cooperative emission set or a semi-static cooperative emission set or a dynamic coordinated emission set.
  • the static cooperative transmission set refers to: Once the cooperative network is deployed (the cooperative network may include multiple base stations, one base station may have multiple cells, or one base station may have multiple small base stations or micro base stations or radio remote units ( Remote Radio Unit (RRU)), a plurality of cells performing JT coherent transmission on a certain UE (such as combining multiple cells to transmit data services for the UE) are determined by the base station of the serving cell of the UE according to the deployment situation, and once determined The multiple cells that perform JT coherent transmission on the UE are no longer changed.
  • RRU Remote Radio Unit
  • the base station of the serving cell of a certain UE determines that the cells performing JT coherent transmission for the UE are Cell 0, Cell 2, and Cell 4, and are no longer changed. .
  • the cooperative network may include multiple base stations, and one base station may have multiple cells
  • multiple cells that perform JT coherent transmission for a certain UE are determined by the base station of the serving cell of the UE.
  • the deployment situation and the measurement information reported by the UE are determined. For example, there are multiple cells in a collaborative network deployment, namely Cell 0 to Cell 5.
  • the base station of the serving cell (Cell 1 ) of a certain UE determines that the cells performing JT coherent transmission for the UE are Cell 0, Cell 2, and Cell 4.
  • the UE reports the measurement information to the base station, and the cell determined by the base station according to the measurement information reported by the UE is Cell 2, Cell 3, and Cell 5, and at this time, the base station can select Cell 2, Cell 3, and Cell 5 as the UE. Perform JT coherent emission.
  • the base station may also determine, for the UE, a cell that performs JT coherent transmission in a polling manner, such as determining that Cell 0, Cell 1, and Cell 2 determine JT coherent transmission for the UE at the beginning, and after a period of time, the base station determines Cell 3 Cell 4 and Cell 5 determine the JT coherent transmission for the UE.
  • the static cooperative transmission set of all UEs under the same serving cell may be the same, or the semi-static cooperative transmission sets of all UEs under the same serving cell may be the same.
  • the dynamic cooperative transmission set The base station determines, according to the measurement information reported by the UE, a plurality of cells that perform JT coherent transmission for the UE, that is, the UE determines which cells perform JT coherent transmission. For example, in a cooperative network deployment, there are multiple cells, which are Cell 0 to Cell 5, and the base station determines, according to the measurement information reported by the UE, that is, the difference between the RSRP of the serving cell reported by the UE and the RSRP of the neighboring cell is less than 5 dB.
  • the cells of the JT coherent transmission are Cell 2, Cell 4, and Cell 5, then the base station determines that Cell 2, Cell 4, and Cell 5 perform JT coherent transmission for the UE, and different UEs may have different coordinated transmission sets according to the measurement information reported by the UE. .
  • the measurement information reported by the UE may include at least one of the following: Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), Channel Quality Indicator (Channel) Quality Indicator (CQI), Signal to Interference plus Noise Ratio (SINR), Block Error Rate (BLER). and many more. It should be understood that embodiments of the invention are not limited thereto.
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • CQI Channel Quality Indicator
  • SINR Signal to Interference plus Noise Ratio
  • BLER Block Error Rate
  • the base station not only acquires the first coordinated transmission set of the user equipment, but also considers the case that the joint channel correction needs to be completed between multiple cells in the JT coherent transmission, and acquires at least one first correction set that has completed the joint channel correction. Therefore, determining the second coordinated transmission set according to the first coordinated transmission set of the user equipment and the at least one first correction set to perform JT coherent transmission on the user equipment can improve the gain of the joint transmission signal.
  • the base station in the cooperative network may acquire the cooperation set from the network controller.
  • the first coordinated transmission set of the user equipment may be selected from the cooperation set acquired by the network controller.
  • the first collaborative launch set is a subset of the collaborative set.
  • the serving cell of the user equipment may obtain at least one first correction set from the network controller, or may acquire at least one first correction set from the base station of the reference cell, where the reference cell is a cell in the first coordinated transmission set of the user equipment, and is implemented by the present invention.
  • the base station may determine the multiple cells as the first calibration set and send the signal to the network controller.
  • the first correction set is sent to the base station of the reference cell in the cooperative network.
  • the base station When the base station does not need to obtain the network controller, it only needs to obtain the first correction set from the base station of the reference cell, so that the delay can be reduced. It should be noted that the channel calibration may be jointly performed between the cells in different base stations, which is not limited in this embodiment of the present invention.
  • At least one first correction set may be obtained through a private interface (such as in a scenario where a baseband board supports multiple cells), that is, a base station customized interface. It should be understood that the embodiment of the present invention does not limit this, and at least one first correction set may be obtained through other forms of interfaces (such as an X2 interface).
  • step 101 at least one first calibration set including a serving cell of the user equipment is obtained.
  • an intersection of the first coordinated transmission set of the user equipment and a first correction set may be determined as the user equipment.
  • the union of the plurality of first correction sets may be determined as a second correction set, specifically, each of the plurality of first correction sets
  • the correction set includes the serving cell of the user equipment, and the intersection of the first coordinated transmission set and the second correction set of the user equipment is determined as the second coordinated transmission of the user equipment, and the embodiment of the present invention is how to transmit according to the first cooperation of the user equipment.
  • the set and the first set of corrections determine that the second coordinated set of transmissions of the user equipment is not limited.
  • the present invention when participating in the JT coherent transmission as multiple user equipments (also referred to as "Multi-User Joint Transmission (MU-JT)"), the present invention may be implemented according to the above invention.
  • the method of the example determines the second collaboration set of each user equipment one by one, and in step 102, performs JT coherent transmission on any one of the multiple user equipments according to the intersection of the second coordinated transmission sets respectively corresponding to the multiple user equipments. , that is, every will The intersection of the second coordinated transmission set of the user equipment participating in the MU-JT coherent transmission is taken as the final cooperative set.
  • the second coordinated transmission set of UE1 is Cell 0, Cell 1, Cell 2, and Cell 3;
  • UE 2 The second coordinated transmit set Cell 0, Cell 1 and Cell 2; and the third coordinated transmit set of UE 3 Cell0, Cell 1 and Cell 3.
  • the cooperative set of MU-JT coherent emissions is Cell 0 and Cell 1.
  • step 101 it may be confirmed whether the user equipment needs to perform JT coherent transmission, and the base station may receive measurement information fed back by the user equipment for determining. If the CQI or RSRP of the serving cell fed back by a user equipment is less than a certain threshold, the base station determines that the user equipment is an edge user equipment. Therefore, it is confirmed that the user equipment needs to perform JT coherent transmission, and step 101 is performed.
  • step 102 it may be estimated whether the signal gain of the JT coherent transmission for the user equipment by the second coordinated transmission set is greater than the signal gain of the other non-JT coherent transmission mode, and if yes, step 103 is performed.
  • the base station confirms that the user equipment needs to perform JT coherent transmission.
  • the base station may receive the measurement information fed back by the user equipment for determining. If the CQI or RSRP of the serving cell is less than a certain threshold, the base station determines that the user equipment is an edge user equipment, and therefore, confirms that the user equipment is a JT coherently transmitted user equipment, that is, Perform JT coherent emission.
  • the measurement information fed back by the UE may include at least one of the following: RSRP, RSRQ, CQI, SINR, BLER, and the like. It should be understood that embodiments of the invention are not limited thereto.
  • the base station acquires a first coordinated emission set and a first correction set of the user equipment.
  • the base station of the serving cell of the user equipment may obtain at least one first correction set from the network controller, or may obtain at least one first correction set from the base station of the reference cell, where the reference cell is the first of the user equipment.
  • One cell in a coordinated transmission set this embodiment of the present invention Not limited.
  • the base station may determine the multiple cells as the first calibration set and send the signal to the network controller.
  • the first correction set is sent to the base station of the reference cell in the cooperative network.
  • the base station When the base station does not need to obtain the network controller, it only needs to obtain the first correction set from the base station of the reference cell, so that the delay can be reduced. It should be noted that the channel calibration may be jointly performed between the cells in different base stations, which is not limited in this embodiment of the present invention.
  • At least one first correction set may be obtained through a private interface (such as in a scenario where a baseband board supports multiple cells), that is, a base station customized interface. It should be understood that the embodiment of the present invention does not limit this, and at least one first correction set may be obtained through other forms of interfaces (such as an X2 interface).
  • the first coordinated transmit set may be a static cooperative transmit set or a semi-static collaborative transmit set or a dynamic coordinated transmit set.
  • the base station can select the first coordinated transmission set of the user equipment from the cooperation set acquired by the network controller.
  • the obtained first correction set includes a serving cell of the user equipment.
  • the base station determines a second coordinated emission set of the user equipment.
  • the base station may determine an intersection of the first coordinated transmission set of the user equipment and a first correction set as the second coordinated transmission set of the user equipment.
  • the first coordinated emission set of the user equipment is Cell 0, Cell 1 and Cell 2
  • the first correction set is Cell0, Cell 1 and Cell 3, that is, in Cell 3, Cell 1 and Cell 3 Joint channel correction has been completed between any two cells.
  • the base station determines Cell 0 and Cell 1 as the second coordinated transmit set of the user equipment.
  • the base station may determine the union of the multiple first correction sets.
  • the intersection of the first coordinated transmit set and the second corrected set of user equipment is determined as the second coordinated transmit set of the user equipment.
  • the first first correction set is Cell 0, Cell 1 and Cell 3
  • the second correction set is Cell0, Cell 2 and Cell 4
  • the union of the two correction sets is Cell. 0, Cell 1, Cell 2, Cell 3, and Cell 4.
  • the base station Cell 0, Cell 1 and Cell 2 are determined as the second coordinated emission set of the user equipment.
  • the second coordinated transmission set of each user equipment may be determined one by one, and the second user equipments respectively correspond to the second The intersection of the collaborative emission sets is determined to be the final second coordinated emission set.
  • the base station estimates a gain of the second coordinated transmit set for JT coherent transmission.
  • the base station determines to use the second coordinated transmit set for JT coherent transmission.
  • the base station estimates in step 204 that the second coordinated transmission set is used for the user equipment.
  • the second cooperative transmission set is used for JT coherent transmission by the user equipment.
  • the base station not only acquires the first coordinated transmission set of the user equipment, but also considers the case that the joint channel correction needs to be completed between multiple cells in the JT coherent transmission, and acquires at least one first correction set that has completed the joint channel correction. Therefore, determining the second coordinated transmission set according to the first coordinated transmission set of the user equipment and the at least one first correction set to perform JT coherent transmission on the user equipment can improve the gain of the joint transmission signal.
  • FIG. 3 is a structural block diagram of a base station according to an embodiment of the present invention.
  • the base station 300 includes an acquisition unit 301, a determination unit 302, and a transmission unit 303.
  • the obtaining unit 301 is configured to acquire a first coordinated transmission set of the user equipment, and acquire at least one first correction set, where each first correction set in the at least one first correction set includes at least two cells, and the at least two cells Joint channel correction has been completed between any two of the cells, the first coordinated transmission set comprising a set of at least one cell that provides cooperative transmission for the user equipment.
  • the determining unit 302 is configured to determine, according to the first coordinated transmission set of the user equipment acquired by the obtaining unit 301 and the at least one first correction set, a second coordinated transmission set of the user equipment.
  • the transmitting unit 303 is configured to perform JT coherent transmission on the user equipment according to the second coordinated transmission set of the user equipment determined by the determining unit 302.
  • the base station not only acquires the first coordinated transmission set of the user equipment, but also considers that the joint channel correction needs to be completed between multiple cells during the JT coherent transmission, and acquires at least one first correction set that has completed the joint channel correction.
  • the first coordinated emission set is a static cooperative transmission Set or semi-static collaborative emission set or dynamic collaborative emission set. Therefore, determining the second coordinated transmission set according to the first coordinated transmission set of the user equipment and the at least one first correction set to perform JT coherent transmission on the user equipment can improve the gain of the joint transmission signal.
  • the base station 300 can implement the steps involved in the base station in the methods of Figs. 1 and 2, and will not be described in detail in order to avoid redundancy.
  • the first coordinated transmission set of the user equipment may be a static cooperative emission set or a semi-static cooperative emission set or a dynamic coordinated emission set.
  • the static cooperative transmission set refers to: Once the cooperative network is deployed (the cooperative network may include multiple base stations, one base station may have multiple cells, or one base station may have multiple small base stations or micro base stations or RRUs), for a certain
  • the multiple cells of the UE performing JT coherent transmission (such as combining multiple cells to transmit data services for the UE) are determined by the base station of the serving cell of the UE according to the deployment situation, and once determined, the JT coherent transmission is performed on the UE.
  • the cells are no longer changed. For example, in a cooperative network deployment, there are multiple cells, which are Cell 0 to Cell 5, respectively.
  • the base station of the serving cell of a certain UE determines that the cells performing JT coherent transmission for the UE are Cell 0, Cell 2, and Cell 4, and are no longer changed. .
  • the cooperative network may include multiple base stations, and one base station may have multiple cells
  • multiple cells that perform JT coherent transmission for a certain UE are determined by the base station of the serving cell of the UE.
  • the deployment situation and the measurement information reported by the UE are determined. For example, there are multiple cells in a collaborative network deployment, namely Cell 0 to Cell 5.
  • the base station of the serving cell (Cell 1 ) of a certain UE determines that the cells performing JT coherent transmission for the UE are Cell 0, Cell 2, and Cell 4.
  • the UE reports the measurement information to the base station, and the cell determined by the base station according to the measurement information reported by the UE is Cell 2, Cell 3, and Cell 5, and at this time, the base station can select Cell 2, Cell 3, and Cell 5 as the UE. Perform JT coherent emission.
  • the base station may also determine, for the UE, a cell that performs JT coherent transmission in a polling manner, such as determining that Cell 0, Cell 1, and Cell 2 determine JT coherent transmission for the UE at the beginning, and after a period of time, the base station determines Cell 3 Cell 4 and Cell 5 determine the JT coherent transmission for the UE.
  • the static cooperative transmission set of all UEs in the same serving cell may be the same, or the semi-static cooperative transmission set of all UEs in the same serving cell may be the same.
  • Dynamic cooperative transmission set The base station determines to perform the UE according to the measurement information reported by the UE.
  • the JT coherently transmits multiple cells, that is, it is determined by the UE which cells perform JT coherent transmission. For example, in a cooperative network deployment, there are multiple cells, which are Cell 0 to Cell 5, and the base station determines, according to the measurement information reported by the UE, that is, the difference between the RSRP of the serving cell reported by the UE and the RSRP of the neighboring cell is less than 5 dB.
  • the cells of the JT coherent transmission are Cell 2, Cell 4, and Cell 5, then the base station determines that Cell 2, Cell 4, and Cell 5 perform JT coherent transmission for the UE, and different UEs may have different coordinated transmission sets according to the measurement information reported by the UE. .
  • the measurement information fed back by the UE may include at least one of the following: RSRP, RSRQ, CQI, SINR, BLER, and the like. It should be understood that embodiments of the invention are not limited thereto.
  • the determining unit 302 is specifically configured to: acquire the first coordinated emission set of the user equipment acquired by the obtaining unit 301, and a first correction set. The intersection is determined to be the second collaborative emission set of the user equipment.
  • the determining unit 302 is specifically configured to: determine, by using the first set of the plurality of first correction sets acquired by the obtaining unit 301, The second correction set determines the intersection of the first coordinated transmission set and the second corrected set of the user equipment acquired by the obtaining unit 301 as the second coordinated transmission set of the user equipment.
  • the obtaining unit 301 is specifically configured to: acquire at least one first correction set from the network controller, or specifically: obtain at least one first correction set from the base station of the reference cell,
  • the cell is a cell in the first coordinated transmission set of the user equipment.
  • the acquiring unit 301 is specifically configured to: acquire at least one first calibration set that includes a serving cell of the user equipment.
  • the transmitting unit 303 is specifically configured to: respectively: the multiple user equipments acquired according to the obtaining unit 301 respectively The intersection of the second coordinated transmit set performs JT coherent transmission on the user equipment.
  • the determining unit 302 is further configured to determine whether the user equipment needs to perform JT coherent transmission, and determine by using the received measurement information fed back by the user equipment. If the CQI or the RSRP of the serving cell that is fed back by the user equipment is less than a certain threshold, the determining unit 302 may be further configured to determine that the user equipment is an edge user equipment, and therefore, confirm that the user equipment needs to be performed. JT coherent emission.
  • the determining unit 302 is further configured to estimate whether the signal gain of the JT coherent transmission for the user equipment by the second coordinated transmission set is greater than the signal gain of the other non-JT coherent transmission modes.
  • Embodiments of the present invention further provide an apparatus embodiment for implementing the steps and methods in the foregoing method embodiments.
  • 4 is a block diagram showing the structure of a base station according to another embodiment of the present invention.
  • the device 400 includes a processor 401, a memory 402, a transmitter 403, and a receiver 404.
  • the processor 401 controls the operation of the device 400, which may also be referred to as a CPU (Central Processing Unit).
  • Memory 402 can include read only memory and random access memory and provides instructions and data to processor 401.
  • a portion of memory 402 may also include non-volatile line random access memory (NVRAM).
  • NVRAM non-volatile line random access memory
  • bus system 410 The processor 401, the memory 402, the transmitter 403 and the receiver 404 are coupled together by a bus system 410, wherein the bus system 410 includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • bus system 410 includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • various buses are labeled as bus system 410 in the figure.
  • the processor 401 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 401 or an instruction in the form of software.
  • the processor 401 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc., or a digital signal processor (DSP).
  • CPU central processing unit
  • NP network processor
  • DSP digital signal processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the processor 401 is configured to acquire a first coordinated transmission set of the user equipment, and acquire at least one first correction set, where each first correction set in the at least one first correction set includes at least two cells, and the at least two cells Joint channel correction has been completed between any two of the cells, the first coordinated transmission set comprising a set of at least one cell that provides cooperative transmission for the user equipment.
  • the processor 401 is further configured to determine a second coordinated transmission set of the user equipment according to the acquired first coordinated transmission set of the user equipment and the at least one first correction set.
  • the transmitter 403 is configured to perform JT coherent transmission on the user equipment according to the second coordinated transmission set of the user equipment determined by the processor 401.
  • the base station not only acquires the first coordinated transmission set of the user equipment, but also considers that the joint channel correction needs to be completed between multiple cells during the JT coherent transmission, and acquires at least one first correction set that has completed the joint channel correction.
  • the first coordinated transmission set is a static cooperative emission set or a semi-static cooperative emission set or a dynamic cooperative emission set. Therefore, determining the second coordinated transmission set according to the first cooperative transmission set of the user equipment and the at least one first correction set to perform JT coherent transmission on the user equipment can improve the gain of the joint transmission signal.
  • the base station 400 can implement the steps involved in the base station in the methods of Figs. 1 and 2, and will not be described in detail in order to avoid redundancy.
  • the first coordinated transmission set of the user equipment may be a static cooperative emission set or a semi-static cooperative emission set or a dynamic coordinated emission set.
  • the static cooperative transmission set refers to: Once the cooperative network is deployed (the cooperative network may include multiple base stations, one base station may have multiple cells, or one base station may have multiple small base stations or micro base stations or RRUs), for a certain
  • the multiple cells of the UE performing JT coherent transmission (such as combining multiple cells to transmit data services for the UE) are determined by the base station of the serving cell of the UE according to the deployment situation, and once determined, the JT coherent transmission is performed on the UE.
  • the cells are no longer changed. For example, in a cooperative network deployment, there are multiple cells, which are Cell 0 to Cell 5, respectively.
  • the base station of the serving cell of a certain UE determines that the cells performing JT coherent transmission for the UE are Cell 0, Cell 2, and Cell 4, and are no longer changed. .
  • the cooperative network may include multiple base stations, and one base station may have multiple cells
  • multiple cells that perform JT coherent transmission for a certain UE are determined by the base station of the serving cell of the UE.
  • the deployment situation and the measurement information reported by the UE are determined. For example, there are multiple cells in a collaborative network deployment, namely Cell 0 to Cell 5.
  • the base station of the serving cell (Cell 1 ) of a certain UE determines that the cells performing JT coherent transmission for the UE are Cell 0, Cell 2, and Cell 4.
  • the UE reports the measurement information to the base station, and the cell determined by the base station according to the measurement information reported by the UE is Cell 2, Cell 3, and Cell 5, At the time, the base station can select Cell 2, Cell 3, and Cell 5 to perform JT coherent transmission for the UE.
  • the base station may also determine, for the UE, a cell that performs JT coherent transmission in a polling manner, such as determining that Cell 0, Cell 1, and Cell 2 determine JT coherent transmission for the UE at the beginning, and after a period of time, the base station determines Cell 3 Cell 4 and Cell 5 determine the JT coherent transmission for the UE.
  • the static cooperative transmission set of all UEs in the same serving cell may be the same, or the semi-static cooperative transmission set of all UEs in the same serving cell may be the same.
  • the dynamic cooperative transmission set The base station determines, according to the measurement information reported by the UE, a plurality of cells that perform JT coherent transmission for the UE, that is, the UE determines which cells perform JT coherent transmission. For example, in a cooperative network deployment, there are multiple cells, which are Cell 0 to Cell 5, and the base station determines, according to the measurement information reported by the UE, that is, the difference between the RSRP of the serving cell reported by the UE and the RSRP of the neighboring cell is less than 5 dB.
  • the cells of the JT coherent transmission are Cell 2, Cell 4, and Cell 5, then the base station determines that Cell 2, Cell 4, and Cell 5 perform JT coherent transmission for the UE, and different UEs may have different coordinated transmission sets according to the measurement information reported by the UE. .
  • the measurement information fed back by the UE may include at least one of the following: RSRP, RSRQ, CQI, SINR, BLER, and the like. It should be understood that embodiments of the invention are not limited thereto.
  • the processor 401 is specifically configured to: determine, as the user, the intersection of the acquired first coordinated transmission set of the user equipment and the first corrected set. A second collaborative launch set of devices.
  • the processor 401 when there are multiple first correction sets acquired, is specifically configured to: determine the acquired union of the plurality of first correction sets as the second correction set, and obtain the The intersection of the first coordinated transmit set and the second corrected set of user equipment is determined to be a second coordinated transmit set of the user equipment.
  • the processor 401 is specifically configured to: acquire at least one first calibration set from the network controller, or specifically: obtain at least one first calibration set from a base station of the reference cell, where The cell is a cell in the first coordinated transmission set of the user equipment.
  • the processor 401 is specifically configured to: acquire at least one first calibration set that includes a serving cell of the user equipment.
  • the transmitter 403 is specifically configured to: The intersection of the second coordinated transmission sets corresponding to the user equipments respectively performs JT coherent transmission on the user equipment.
  • the processor 401 is further configured to: determine whether the user equipment needs to perform JT coherent transmission, and determine by using the measurement information fed back by the user equipment received by the receiver 404. If the CQI or RSRP of the serving cell fed back by a user equipment is less than a certain threshold, the processor 401 may also be used to determine that the user equipment is an edge user equipment, and therefore, the user equipment needs to perform JT coherent transmission.
  • the processor 401 is further operative to estimate whether the signal gain of the JT coherent transmission for the user equipment by the second coordinated transmission set is greater than the signal gain of the other non-JT coherent transmission modes.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • 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 electrical, mechanical or otherwise.
  • 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. You can choose which one according to your actual needs. Some or all of the units implement the objectives 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 functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause 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, which can store program codes. .

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Abstract

本发明实施例提供一种协作发射集的确定方法和基站。该方法包括：获取用户设备的第一协作发射集，并获取至少一个第一校正集，所述至少一个第一校正集中的每个第一校正集包括至少两个小区，所述至少两个小区中的任两个小区之间已完成联合通道校正，所述第一协作发射集包括为所述用户设备提供协作发射的至少一个小区的集合；根据所述用户设备的第一协作发射集和所述至少一个第一校正集确定所述用户设备的第二协作发射集；根据所述用户设备的第二协作发射集对所述用户设备进行联合发送JT相干发射。因此，基站还考虑在JT相干发射时多小区间需要完成联合通道校正的情况，能够更合理地确定对用户设备进行JT相干发射的协作发射集，提高增益。

Description

协作发射集的确定方法和基站 技术领域
本发明实施例涉及通信技术领域， 并且更具体地， 涉及协作发射集的 确定方法和基站。 背景技术
联合发送 ( Joint Transmission , JT )技术作为协作多点 ( Coordinative Multiple Point , CoMP ) 技术的一种， 可以显著提高小区边缘的平均吞吐 量。在现有的技术中，协作网络一旦部署，基站根据部署情况确定了 CoMP 协作发射集且不再更改， 或者基于用户设备（ User Equipment, UE ) 上报 的测量信息 （如参考信号的接收功率 （Reference Signal Receiving Power, RSRP ) 或信道质量指示 （Channel Quality Indicator , CQI ) 等） 来确定 CoMP协作发射集。
但是， 为了获得 JT技术带来的增益， 需要在 JT相干发射中协作的多 个小区之间进行联合通道的校正，使得经过数字或模拟补偿后的多个小区 对应中射频通道信道响应在时间和 /或相位上对齐， 这里的对齐可以是补 偿后的发射和 /或接收中射频通道信道响应相等， 也可以是补偿后的多个 发射与接收中射频通道信道响应的比值相等。 而釆用现有技术确定的 CoMP协作发射集作为 JT相干发射中协作的多个小区， 将导致联合发射 信号的增益较低。 发明内容
本发明实施例提供一种协作发射集的确定方法和基站，能够更合理地 确定对用户设备进行 JT相干发射的协作发射集， 提高联合发射信号的增 益。
第一方面， 提供了一种协作发射集的确定方法， 该方法包括： 获取用 户设备的第一协作发射集， 并获取至少一个第一校正集， 所述至少一个第 一校正集中的每个第一校正集包括至少两个小区，所述至少两个小区中的 任两个小区之间已完成联合通道校正，所述第一协作发射集包括为所述用 户设备提供协作发射的至少一个小区的集合；根据所述用户设备的第一协 作发射集和所述至少一个第一校正集确定所述用户设备的第二协作发射 集； 根据所述用户设备的第二协作发射集对所述用户设备进行联合发送
JT相干发射。
结合第一方面， 在第一方面的另一种实现方式中， 所述至少一个第一 校正集为一个第一校正集，所述根据所述用户设备的第一协作发射集和所 述至少一个第一校正集确定所述用户设备的第二协作发射集， 包括： 将所 述用户设备的第一协作发射集和所述一个第一校正集的交集确定为所述 用户设备的第二协作发射集。
结合第一方面或其上述实现方式之一，在第一方面的另一种实现方式 中， 所述至少一个第一校正集为多个第一校正集， 所述根据所述用户设备 的第一协作发射集和所述至少一个第一校正集确定所述用户设备的第二 协作发射集， 包括： 将所述多个第一校正集的并集确定为第二校正集； 将 所述用户设备的第一协作发射集和所述第二校正集的交集确定为所述用 户设备的第二协作发射集。
结合第一方面或其上述实现方式之一，在第一方面的另一种实现方式 中， 所述获取至少一个第一校正集， 包括： 获取至少一个包含所述用户设 备服务小区的第一校正集。
结合第一方面或其上述实现方式之一，在第一方面的另一种实现方式 中， 所述获取至少一个第一校正集， 包括： 从网络控制器中获取所述至少 一个第一校正集； 或者从参考小区的基站中获取所述至少一个第一校正 集， 所述参考小区为所述用户设备的第一协作发射集中的一个小区。
结合第一方面或其上述实现方式之一，在第一方面的另一种实现方式 中， 当参与 JT相干发射为多个用户设备且所述用户设备为所述多个用户 设备之一时，所述根据所述用户设备的第二协作发射集对所述用户设备进 行 JT相干发射， 包括： 根据所述多个用户设备分别对应的第二协作发射 集的交集对所述用户设备进行 JT相干发射。
结合第一方面或其上述实现方式之一，在第一方面的另一种实现方式 中，所述用户设备的第一协作发射集为静态协作发射集或半静态协作发射 集或动态协作发射集。
第二方面， 提供了一种基站， 该基站包括： 获取单元， 用于获取用户 设备的第一协作发射集， 并获取至少一个第一校正集， 所述至少一个第一 校正集中的每个第一校正集包括至少两个小区，所述至少两个小区中的任 两个小区之间已完成联合通道校正，所述第一协作发射集包括为所述用户 设备提供协作发射的至少一个小区的集合； 确定单元， 用于根据所述获取 单元获取的所述用户设备的第一协作发射集和所述至少一个第一校正集 确定所述用户设备的第二协作发射集； 发射单元， 用于根据所述确定单元 确定的所述用户设备的第二协作发射集对所述用户设备进行 JT 相干发 射。
结合第二方面， 在第二方面的另一种实现方式中， 所述确定单元具体 用于：将所述获取单元获取的所述用户设备的第一协作发射集和所述一个 第一校正集的交集确定为所述用户设备的第二协作发射集。
结合第二方面或其上述实现方式之一，在第二方面的另一种实现方式 中， 所述确定单元具体用于： 将所述获取单元获取的所述多个第一校正集 的并集确定为第二校正集；将所述获取单元获取的所述用户设备的第一协 作发射集和所述第二校正集的交集确定为所述用户设备的第二协作发射 结合第二方面或其上述实现方式之一，在第二方面的另一种实现方式 中， 所述获取单元具体用于： 获取至少一个包含所述用户设备服务小区的 第一校正集。
结合第二方面或其上述实现方式之一，在第二方面的另一种实现方式 中， 所述获取单元具体用于： 从网络控制器中获取所述至少一个第一校正 集； 或者具体用于： 从参考小区的基站中获取所述至少一个第一校正集， 所述参考小区为所述用户设备的第一协作发射集中的一个小区。
结合第二方面或其上述实现方式之一，在第二方面的另一种实现方式 中， 当参与 JT相干发射为多个用户设备且所述用户设备为所述多个用户 设备之一时， 所述发射单元具体用于： 根据所述获取单元获取的所述多个 用户设备分别对应的第二协作发射集的交集对所述用户设备进行 JT相干 发射。
结合第二方面或其上述实现方式之一，在第二方面的另一种实现方式 中，所述用户设备的第一协作发射集为静态协作发射集或半静态协作发射 集或动态协作发射集。
在本发明实施例中基站不仅获取用户设备的第一协作发射集，还考虑 在 JT相干发射时多小区间需要完成联合通道校正的情况， 获取至少一个 已完成联合通道校正的第一校正集。 因此， 根据用户设备的第一协作发射 集和至少一个第一校正集确定第二协作发射集来对该用户设备进行送 JT 相干发射， 能够提高联合发射信号的增益。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例或现有 技术描述中所需要使用的附图作简单地介绍， 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他的附图。
图 1是本发明一个实施例的协作发射集的确定方法的流程图。
图 2 是本发明一个实施例的协作发射集的确定方法的过程的示意性 流程图。
图 3是本发明一个实施例的基站的结构框图。
图 4是本发明另一个实施例的基站的结构框图。
具体实施方式
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， 所描述的实施例是本发明一部分实施例， 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 作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范 围。
应理解， 本发明实施例的技术方案可以应用于各种通信系统， 例如： 全球移动通讯（ Global System of Mobile communication , GSM ) 系统、 码 分多址 （Code Division Multiple Access , CDMA ) 系统、 宽带码分多址
( Wideband Code Division Multiple Access , WCDMA ) 系统、 通用分组无 线业务 （General Packet Radio Service , GPRS )、 长期演进 （Long Term Evolution, LTE ) 系统、 LTE频分双工 ( Frequency Division Duplex, FDD ) 系统、 LTE时分双工 （ Time Division Duplex, TDD )、 通用移动通信系统
( Universal Mobile Telecommunication System , UMTS )、 全球互联微波接 入 ( Worldwide Interoperability for Microwave Access , WiMAX )通信系统 等。
在本发明实施例中， 基站可以是 GSM 或 CDMA 中的基站 （Base Transceiver Station, BTS ), 也可以是 WCDMA中的基站 （ NodeB , NB ) 或者 UMTS中的基站 （Base Station , BS ), 还可以是 LTE中的演进型基 站 （Evolutional Node B , eNB或 eNodeB ), 等等， 本发明并不限定。
网络控制器可以是基站控制器， 如 GSM或 CDMA 中的基站控制器
( Base Station Controller, BSC ), WCDMA中的无线网络控制器 ( Radio Network Controller , RNC ), 或者合并在 LTE的演进型基站 （evolutional Node B , eNB 或 e-NodeB ) 中； 网络控制器还可以是操作维护中心
( Operations & Maintenance Center, OMC ) 等等。 应理解， 本发明实施 例并不限于此。
用户设备 （User Equipment , UE ) , 也可称之为移动终端 （Mobile Terminal )、移动用户设备等，可以经无线接入网（例如， RAN, Radio Access Network ) 与一个或多个核心网进行通信， 用户设备可以是移动终端， 如 移动电话 （或称为 "蜂窝" 电话）和具有移动终端的计算机， 例如， 可以 是便携式、 袖珍式、 手持式、 计算机内置的或者车载的移动装置， 它们与 无线接入网交换语言和 /或数据。
图 1 是本发明一个实施例的协作发射集的确定方法的流程图。 图 1 的方法由基站执行。
101 , 获取用户设备的第一协作发射集， 并获取至少一个第一校正集， 至少一个第一校正集中的每个第一校正集包括至少两个小区，所述至少两 个小区中的任两个小区之间已完成联合通道校正，所述第一协作发射集包 括为所述用户设备提供协作发射的至少一个小区的集合。
102 , 根据用户设备的第一协作发射集和至少一个第一校正集确定用 户设备的第二协作发射集。
103 ,根据用户设备的第二协作发射集对用户设备进行联合发送 JT相 干发射。
在本发明实施例中基站不仅获取用户设备的第一协作发射集，还考虑 在 JT相干发射时多小区间需要完成联合通道校正的情况， 获取至少一个 已完成联合通道校正的第一校正集。 因此， 根据用户设备的第一协作发射 集和至少一个第一校正集确定第二协作发射集来对该用户设备进行 JT相 干发射， 能够提高联合发射信号的增益。
可选地， 作为一个实施例， 用户设备的第一协作发射集可以为静态协 作发射集或半静态协作发射集或动态协作发射集。
静态协作发射集指的是： 协作网络一旦部署（协作网络可以包括多个 基站， 一个基站下可以具有多个小区， 或者说一个基站下可以具有多个小 基站或微基站或射频拉远单元 （ Remote Radio Unit, RRU ) ), 对某个 UE 进行 JT相干发射 （如联合多个小区为该 UE发射数据业务） 的多个小区 由该 UE 的服务小区的基站根据部署情况来确定， 并且一旦确定， 对该 UE进行 JT相干发射的多个小区不再更改。 例如， 协作网络部署中有多个 小区， 分别是 Cell 0至 Cell5 , 某个 UE的服务小区的基站为该 UE确定进 行 JT相干发射的小区是 Cell 0、 Cell 2和 Cell 4 , 并且不再改变。
半静态协作发射集：协作网络一旦部署（协作网络可以包括多个基站 , 一个基站下可以具有多个小区）， 对某个 UE进行 JT相干发射的多个小区 由该 UE 的服务小区的基站根据部署情况和该 UE 上报的测量信息来确 定。 例如， 协作网络部署中有多个小区， 分别是 Cell 0至 Cell5。 初始阶 段， 某个 UE的服务小区 （Cell l ) 的基站为该 UE确定进行 JT相干发射 的小区是 Cell 0、 Cell 2和 Cell 4。某个时刻，该 UE向基站上报测量信息， 基站根据该 UE上报的测量信息确定的小区为 Cell 2、 Cell 3和 Cell 5 , 此 时， 基站可以选择 Cell 2、 Cell 3和 Cell 5为该 UE进行 JT相干发射。 当 然， 基站也可以以轮询方式为该 UE确定进行 JT相干发射的小区， 如开 始时确定 Cell 0、 Cell 1和 Cell 2为该 UE确定进行 JT相干发射， 在一段 时间后，基站确定 Cell 3、 Cell 4和 Cell 5为该 UE确定进行 JT相干发射。
同一个服务小区下的所有 UE的静态协作发射集可以是一样的， 或者 同一服务小区下的所有 UE的半静态协作发射集可以是一样的。
动态协作发射集： 基站根据 UE上报的测量信息来确定为该 UE进行 JT相干发射的多个小区， 也就是说， 由 UE来决定哪几个小区进行 JT相 干发射。 例如， 协作网络部署中有多个小区， 分别是 Cell 0至 Cell5 , 基 站根据 UE上报的测量信息 （如 UE上报的服务小区的 RSRP和相邻小区 的 RSRP之差小于 5dB ) 确定为该 UE进行 JT相干发射的小区为 Cell 2、 Cell 4和 Cell 5 , 那么基站确定 Cell 2、 Cell 4和 Cell 5为该 UE进行 JT 相干发射，不同的 UE根据自身上报的测量信息，协作发射集可以不一样。
需要说明的是， UE上报的测量信息可以包括下列至少之一： 参考信 号的接收功率（ Reference Signal Receiving Power, RSRP )、 参考信号的接 收质量 （ Reference Signal Receiving Quality , RSRQ )、 信道质量指示 ( Channel Quality Indicator , CQI )、 信号与干扰力口噪声比 ( Signal to Interference plus Noise Ratio , SINR )、 误块率 ( Block Error Rate , BLER )。 等等。 应理解， 本发明实施例并不限于此。
在本发明实施例中基站不仅获取用户设备的第一协作发射集，还考虑 在 JT相干发射时多小区间需要完成联合通道校正的情况， 获取至少一个 已完成联合通道校正的第一校正集。 因此， 根据用户设备的第一协作发射 集和至少一个第一校正集确定第二协作发射集来对该用户设备进行 JT相 干发射， 能够提高联合发射信号的增益。
可选地， 作为另一个实施例， 在步骤 101之前， 协作网络一旦部署， 协作网络中的基站可以从网络控制器中获取协作集。 在步骤 101 中， 当基 站在为某个用户设备确定进行 JT相干发射的多个小区时， 可以从网络控 制器中获取的协作集中选择用户设备的第一协作发射集。第一协作发射集 为协作集的子集。
可选地， 作为另一个实施例， 在步骤 101 中， 用户设备的服务小区的 基站可以从网络控制器中获取至少一个第一校正集；也可以从参考小区的 基站中获取至少一个第一校正集，该参考小区为用户设备的第一协作发射 集中的一个小区， 本发明实施例对此不作限定。 具体地， 当某个基站下的 多个小区中的任两个小区之间完成联合通道校正后，该基站可以将该多个 小区确定为第一校正集， 发送给网络控制器。 优选地， 当该基站不为参考 小区的基站时， 将第一校正集发送给协作网络中的参考小区的基站。 当该 基站无需到网络控制器获取， 只需从参考小区的基站获取第一校正集， 这 样， 可以降低时延。 需要说明的是， 不同基站下的小区之间也可以联合通 道校正， 本发明实施例对此不做限制。
可选地， 可以通过私有接口 （如在一个基带板支持多个小区的场景 下）， 即基站自定义的接口， 获取至少一个第一校正集。 应理解， 本发明 实施例对此不作限定， 也可以通过其它形式的接口 （如 X2接口 ） 获取至 少一个第一校正集。
可选地， 作为另一个实施例， 在步骤 101 中， 获取至少一个包含用户 设备服务小区的第一校正集。
可选地， 作为另一个实施例， 当获取的第一校正集只有一个时， 在步 骤 102中，可以将用户设备的第一协作发射集和一个第一校正集的交集确 定为用户设备的第二协作发射集。 当获取的第一校正集有多个时， 在步骤 102中， 可以将该多个第一校正集的并集确定为第二校正集， 具体地， 多 个第一校正集中的每个第一校正集包含用户设备的服务小区，将用户设备 的第一协作发射集和第二校正集的交集确定为用户设备的第二协作发射 应理解，本发明实施例对如何根据用户设备第一协作发射集和第一校 正集确定该用户设备的第二协作发射集不作限定。
可选地，作为另一个实施例， 当参与 JT相干发射为多个用户设备（也 称为 "多用户联合发送 ( Multi-User Joint Transmission , MU-JT )" ) 时， 可以按照上述本发明实施例的方法逐一地确定各个用户设备的第二协作 集， 在步骤 102中， 根据多个用户设备分别对应的第二协作发射集的交集 对多个用户设备中的任一个用户设备进行 JT相干发射， 也就是说， 将每 个参与 MU-JT相干发射的用户设备的第二协作发射集的交集作为最终的 协作集。
例如， 如果参与 MU-JT相干发射的用户设备为 3个， 分别是 UE 1、 UE 2 ^ UE 3 , UE1的第二协作发射集为 Cell 0、 Cell 1、 Cell 2和 Cell 3 ; UE 2的第二协作发射集 Cell 0、 Cell 1和 Cell 2; 而 UE 3的第三协作发射 集 Cell0、 Cell 1和 Cell 3。 那么， MU-JT相干发射的协作集为 Cell 0和 Cell 1。
应理解， 上述例子中用户设备的数目或小区数目等仅仅是示例性的， 而非要限制本发明的范围。
可选地， 在步骤 101之前， 可以确认用户设备是否需要进行 JT相干 发射， 基站可以接收用户设备反馈的测量信息进行判断。 如某个用户设备 反馈的服务小区的 CQI或 RSRP 小于某个门限值时， 基站确定该用户设 备为边缘用户设备， 因此， 确认该用户设备需要进行 JT相干发射， 执行 步骤 101。
可选地， 在步骤 102之后， 可以估算釆用第二协作发射集为用户设备 进行 JT相干发射的信号增益是否大于其它非 JT相干发射模式的信号增 益， 如果是， 则执行步骤 103。
下面结合图 2的例子更加详细地描述本发明实施例。
201 , 基站确认用户设备需要进行 JT相干发射。
可选地， 基站可以接收用户设备反馈的测量信息进行判断。 如某个用 户设备反馈的测量信息， 如服务小区的 CQI或 RSRP小于某个门限值时， 基站确定该用户设备为边缘用户设备， 因此， 确认用户设备为 JT相干发 射的用户设备， 即需要进行 JT相干发射。
需要说明的是， UE反馈的测量信息可以包括下列至少之一： RSRP、 RSRQ、 CQI、 SINR、 BLER等。 应理解， 本发明实施例并不限于此。
202 , 基站获取用户设备的第一协作发射集和第一校正集。
可选地，用户设备的服务小区的基站可以从网络控制器中获取至少一 个第一校正集， 也可以从参考小区的基站中获取至少一个第一校正集， 该 参考小区为用户设备的第一协作发射集中的一个小区，本发明实施例对此 不作限定。 具体地， 当某个基站下的多个小区中的任两个小区之间完成联 合通道校正后， 该基站可以将该多个小区确定为第一校正集， 发送给网络 控制器。 优选地， 当该基站不为参考小区的基站时， 将第一校正集发送给 协作网络中的参考小区的基站。 当该基站无需到网络控制器获取， 只需从 参考小区的基站获取第一校正集， 这样， 可以降低时延。 需要说明的是， 不同基站下的小区之间也可以联合通道校正， 本发明实施例对此不做限 制。
可选地， 可以通过私有接口 （如在一个基带板支持多个小区的场景 下）， 即基站自定义的接口， 获取至少一个第一校正集。 应理解， 本发明 实施例对此不作限定， 也可以通过其它形式的接口 （如 X2接口 ） 获取至 少一个第一校正集。
可选地，第一协作发射集可以是静态协作发射集或半静态协作发射集 或动态协作发射集。 例如， 当第一协作发射集是静态协作发射集时， 基站 可以从网络控制器中获取的协作集中选择用户设备的第一协作发射集。
可选地， 获取的第一校正集都包含用户设备的服务小区。
203 , 基站确定用户设备的第二协作发射集。
可选地， 当基站在步骤 202中获取的第一校正集只有一个时， 基站可 以将用户设备的第一协作发射集和一个第一校正集的交集确定为用户设 备的第二协作发射集。 例如， 用户设备的第一协作发射集是 Cell 0、 Cell 1 和 Cell 2 , 而第一校正集为 Cell0、 Cell 1和 Cell 3 , 也就是说 Cell 0、 Cell 1 和 Cell 3 三个小区中的任两个小区之间已完成联合通道校正。 基站将 Cell 0和 Cell 1确定为该用户设备的第二协作发射集。
可选地， 当基站在步骤 202中获取的第一校正集有多个时， 选取包含 该用户设备服务小区的多个第一校正集，基站可以将该多个第一校正集的 并集确定为第二校正集，将用户设备的第一协作发射集和第二校正集的交 集确定为用户设备的第二协作发射集。 以两个校正集为例进行说明， 第一 个第一校正集是 Cell 0、 Cell 1和 Cell 3 , 第二个校正集为 Cell0、 Cell 2 和 Cell 4 , 两个校正集的并集为 Cell 0、 Cell 1、 Cell 2 、 Cell 3和 Cell 4。 假设用户设备的第一协作发射集是 Cell 0、 Cell 1和 Cell 2 , 那么， 基站 将 Cell 0、 Cell 1和 Cell 2确定为该用户设备的第二协作发射集。 可选地， 当参与 JT相干发射为多个用户设备， 即在 MU-JT相干发射 的情况下， 可以逐一地确定各个用户设备的第二协作发射集， 将多个用户 设备分别对应的第二协作发射集的交集确定为最终的第二协作发射集。具 体的例子可参考上述， 此处不再赘述。
应理解， 上述例子仅仅是示例性的， 而非要限制本发明的范围。
204 , 基站估算第二协作发射集进行 JT相干发射的增益。
205 基站确定釆用第二协作发射集进行 JT相干发射。
可选地，基站在步骤 204中估算釆用第二协作发射集为用户设备进行
JT相干发射的信号增益大于其它非 JT相干发射模式的信号增益时， 确定 釆用第二协作发射集为用户设备进行 JT相干发射。
在本发明实施例中基站不仅获取用户设备的第一协作发射集，还考虑 在 JT相干发射时多小区间需要完成联合通道校正的情况， 获取至少一个 已完成联合通道校正的第一校正集。 因此， 根据用户设备的第一协作发射 集和至少一个第一校正集确定第二协作发射集来对该用户设备进行 JT相 干发射， 能够提高联合发射信号的增益。
图 3是本发明一个实施例的基站的结构框图。基站 300包括获取单元 301、 确定单元 302和发射单元 303。
获取单元 301 , 用于获取用户设备的第一协作发射集， 并获取至少一 个第一校正集，至少一个第一校正集中的每个第一校正集包括至少两个小 区， 所述至少两个小区中的任两个小区之间已完成联合通道校正， 所述第 一协作发射集包括为所述用户设备提供协作发射的至少一个小区的集合。
确定单元 302 , 用于根据获取单元 301获取的用户设备的第一协作发 射集和至少一个第一校正集确定用户设备的第二协作发射集。
发射单元 303 , 用于根据确定单元 302确定的用户设备的第二协作发 射集对用户设备进行 JT相干发射。
在本发明实施例中基站不仅获取用户设备的第一协作发射集，还考虑 在 JT相干发射时多小区间需要完成联合通道校正的情况， 获取至少一个 已完成联合通道校正的第一校正集，其中第一协作发射集为静态协作发射 集或半静态协作发射集或动态协作发射集。 因此， 根据用户设备的第一协 作发射集和至少一个第一校正集确定第二协作发射集来对该用户设备进 行 JT相干发射， 能够提高联合发射信号的增益。
基站 300可实现图 1和图 2的方法中涉及基站的各个步骤，为避免重 复， 不再详细描述。
可选地， 作为一个实施例， 用户设备的第一协作发射集可以为静态协 作发射集或半静态协作发射集或动态协作发射集。
静态协作发射集指的是： 协作网络一旦部署（协作网络可以包括多个 基站， 一个基站下可以具有多个小区， 或者说一个基站下可以具有多个小 基站或微基站或 RRU ),对某个 UE进行 JT相干发射（如联合多个小区为 该 UE发射数据业务） 的多个小区由该 UE的服务小区的基站根据部署情 况来确定， 并且一旦确定， 对该 UE进行 JT相干发射的多个小区不再更 改。 例如， 协作网络部署中有多个小区， 分别是 Cell 0至 Cell5 , 某个 UE 的服务小区的基站为该 UE确定进行 JT相干发射的小区是 Cell 0、 Cell 2 和 Cell 4 , 并且不再改变。
半静态协作发射集：协作网络一旦部署（协作网络可以包括多个基站 , 一个基站下可以具有多个小区）， 对某个 UE进行 JT相干发射的多个小区 由该 UE 的服务小区的基站根据部署情况和该 UE 上报的测量信息来确 定。 例如， 协作网络部署中有多个小区， 分别是 Cell 0至 Cell5。 初始阶 段， 某个 UE的服务小区 （Cell l ) 的基站为该 UE确定进行 JT相干发射 的小区是 Cell 0、 Cell 2和 Cell 4。某个时刻，该 UE向基站上报测量信息， 基站根据该 UE上报的测量信息确定的小区为 Cell 2、 Cell 3和 Cell 5 , 此 时， 基站可以选择 Cell 2、 Cell 3和 Cell 5为该 UE进行 JT相干发射。 当 然， 基站也可以以轮询方式为该 UE确定进行 JT相干发射的小区， 如开 始时确定 Cell 0、 Cell 1和 Cell 2为该 UE确定进行 JT相干发射， 在一段 时间后，基站确定 Cell 3、 Cell 4和 Cell 5为该 UE确定进行 JT相干发射。
同一个服务小区下的所有 UE的静态协作发射集可以一样， 或者同一 个服务小区下的所有 UE的半静态协作发射集可以一样。
动态协作发射集： 基站根据 UE上报的测量信息来确定为该 UE进行 JT相干发射的多个小区， 也就是说， 由 UE来决定哪几个小区进行 JT相 干发射。 例如， 协作网络部署中有多个小区， 分别是 Cell 0至 Cell5 , 基 站根据 UE上报的测量信息 （如 UE上报的服务小区的 RSRP和相邻小区 的 RSRP之差小于 5dB ) 确定为该 UE进行 JT相干发射的小区为 Cell 2、 Cell 4和 Cell 5 , 那么基站确定 Cell 2、 Cell 4和 Cell 5为该 UE进行 JT 相干发射，不同的 UE根据自身上报的测量信息，协作发射集可以不一样。
需要说明的是， UE反馈的测量信息可以包括下列至少之一： RSRP、 RSRQ、 CQI、 SINR、 BLER等。 应理解， 本发明实施例并不限于此。
可选地， 作为另一个实施例， 获取单元 301获取的第一校正集只有一 个时， 确定单元 302具体用于： 将获取单元 301获取的用户设备的第一协 作发射集和一个第一校正集的交集确定为用户设备的第二协作发射集。
可选地， 作为另一个实施例， 当获取单元 301获取的第一校正集有多 个时， 确定单元 302具体用于： 将获取单元 301获取的多个第一校正集的 并集确定为第二校正集，将获取单元 301获取的用户设备的第一协作发射 集和第二校正集的交集确定为用户设备的第二协作发射集。
可选地， 作为另一个实施例， 获取单元 301具体用于： 从网络控制器 中获取至少一个第一校正集； 或者具体用于： 从参考小区的基站中获取至 少一个第一校正集， 参考小区为用户设备的第一协作发射集中的一个小 区。
可选地， 作为另一个实施例， 获取单元 301具体用于： 获取至少一个 包含用户设备服务小区的第一校正集。
可选地， 作为另一个实施例， 当参与 JT相干发射为多个用户设备且 用户设备为多个用户设备之一时， 发射单 303 具体用于： 根据获取单元 301 获取的多个用户设备分别对应的第二协作发射集的交集对用户设备 进行 JT相干发射。
可选地， 确定单元 302还可以用于确认用户设备是否需要进行 JT相 干发射， 通过接收的用户设备反馈的测量信息进行判断。 如某个用户设备 反馈的服务小区的 CQI或 RSRP小于某个门限值时， 确定单元 302还可 以用于确定该用户设备为边缘用户设备， 因此， 确认该用户设备需要进行 JT相干发射。
可选地，确定单元 302还可以用于估算釆用第二协作发射集为用户设 备进行 JT相干发射的信号增益是否大于其它非 JT相干发射模式的信号增 益。
本发明实施例进一步给出实现上述方法实施例中各步骤及方法的装 置实施例。图 4是本发明另一个实施例的基站的结构框图，在该实施例中， 设备 400 包括处理器 401 , 存储器 402 , 发射器 403和接收器 404。 处理 器 401 控制设备 400 的操作， 处理器 401 还可以称为 CPU ( Central Processing Unit, 中央处理单元）。 存储器 402可以包括只读存储器和随机 存取存储器， 并向处理器 401提供指令和数据。 存储器 402的一部分还可 以包括非易失行随机存取存储器 （NVRAM )。 处理器 401 , 存储器 402 , 发射器 403和接收器 404通过总线系统 410耦合在一起， 其中总线系统 410除包括数据总线之外， 还包括电源总线、 控制总线和状态信号总线。 但是为了清楚说明起见， 在图中将各种总线都标为总线系统 410。
上述本发明实施例揭示的方法可以应用上述的设备 400。 其中， 处理 器 401可能是一种集成电路芯片， 具有信号的处理能力。 在实现过程中， 上述方法的各步骤可以通过处理器 401 中的硬件的集成逻辑电路或者软 件形式的指令完成。 上述的处理器 401可以是通用处理器， 包括中央处理 器（ Central Processing Unit , CPU )、 网络处理器（ Network Processor, NP ) 等； 还可以是数字信号处理器 （Digital Signal Processing , DSP ), 专用集 成电路 （ Application Specific Integrated Circuit, ASIC )、 现成可编程门阵 列 ( Field Programmable Gate Array , FPGA ) 或者其他可编程逻辑器件、 分立门或者晶体管逻辑器件、 分立硬件组件。 可以实现或者执行本发明实 施例中的公开的各方法、 步骤及逻辑框图。 通用处理器可以是微处理器或 者该处理器也可以是任何常规的处理器等。
处理器 401 , 用于获取用户设备的第一协作发射集， 并获取至少一个 第一校正集， 至少一个第一校正集中的每个第一校正集包括至少两个小 区， 所述至少两个小区中的任两个小区之间已完成联合通道校正， 所述第 一协作发射集包括为所述用户设备提供协作发射的至少一个小区的集合。 处理器 401 还用于根据获取的用户设备的第一协作发射集和至少一 个第一校正集确定用户设备的第二协作发射集。
发射器 403 , 用于根据处理器 401确定的用户设备的第二协作发射集 对用户设备进行 JT相干发射。
在本发明实施例中基站不仅获取用户设备的第一协作发射集，还考虑 在 JT相干发射时多小区间需要完成联合通道校正的情况， 获取至少一个 已完成联合通道校正的第一校正集，其中第一协作发射集为静态协作发射 集或半静态协作发射集或动态协作发射集。 因此， 根据用户设备的第一协 作发射集和至少一个第一校正集确定第二协作发射集来对该用户设备进 行 JT相干发射， 能够提高联合发射信号的增益。
基站 400可实现图 1和图 2的方法中涉及基站的各个步骤，为避免重 复， 不再详细描述。
可选地， 作为一个实施例， 用户设备的第一协作发射集可以为静态协 作发射集或半静态协作发射集或动态协作发射集。
静态协作发射集指的是： 协作网络一旦部署（协作网络可以包括多个 基站， 一个基站下可以具有多个小区， 或者说一个基站下可以具有多个小 基站或微基站或 RRU ),对某个 UE进行 JT相干发射（如联合多个小区为 该 UE发射数据业务） 的多个小区由该 UE的服务小区的基站根据部署情 况来确定， 并且一旦确定， 对该 UE进行 JT相干发射的多个小区不再更 改。 例如， 协作网络部署中有多个小区， 分别是 Cell 0至 Cell5 , 某个 UE 的服务小区的基站为该 UE确定进行 JT相干发射的小区是 Cell 0、 Cell 2 和 Cell 4 , 并且不再改变。
半静态协作发射集：协作网络一旦部署（协作网络可以包括多个基站 , 一个基站下可以具有多个小区）， 对某个 UE进行 JT相干发射的多个小区 由该 UE 的服务小区的基站根据部署情况和该 UE 上报的测量信息来确 定。 例如， 协作网络部署中有多个小区， 分别是 Cell 0至 Cell5。 初始阶 段， 某个 UE的服务小区 （Cell l ) 的基站为该 UE确定进行 JT相干发射 的小区是 Cell 0、 Cell 2和 Cell 4。某个时刻，该 UE向基站上报测量信息， 基站根据该 UE上报的测量信息确定的小区为 Cell 2、 Cell 3和 Cell 5 , 此 时， 基站可以选择 Cell 2、 Cell 3和 Cell 5为该 UE进行 JT相干发射。 当 然， 基站也可以以轮询方式为该 UE确定进行 JT相干发射的小区， 如开 始时确定 Cell 0、 Cell 1和 Cell 2为该 UE确定进行 JT相干发射， 在一段 时间后，基站确定 Cell 3、 Cell 4和 Cell 5为该 UE确定进行 JT相干发射。
同一个服务小区下的所有 UE的静态协作发射集可以一样， 或者同一 个服务小区下的所有 UE的半静态协作发射集可以一样。
动态协作发射集： 基站根据 UE上报的测量信息来确定为该 UE进行 JT相干发射的多个小区， 也就是说， 由 UE来决定哪几个小区进行 JT相 干发射。 例如， 协作网络部署中有多个小区， 分别是 Cell 0至 Cell5 , 基 站根据 UE上报的测量信息 （如 UE上报的服务小区的 RSRP和相邻小区 的 RSRP之差小于 5dB ) 确定为该 UE进行 JT相干发射的小区为 Cell 2、 Cell 4和 Cell 5 , 那么基站确定 Cell 2、 Cell 4和 Cell 5为该 UE进行 JT 相干发射，不同的 UE根据自身上报的测量信息，协作发射集可以不一样。
需要说明的是， UE反馈的测量信息可以包括下列至少之一： RSRP、 RSRQ、 CQI、 SINR、 BLER等。 应理解， 本发明实施例并不限于此。
可选地， 作为另一个实施例， 当获取的第一校正集只有一个时， 处理 器 401具体用于：将获取的用户设备的第一协作发射集和一个第一校正集 的交集确定为用户设备的第二协作发射集。
可选地， 作为另一个实施例， 当获取的第一校正集有多个时， 处理器 401具体用于： 将获取的多个第一校正集的并集确定为第二校正集， 将获 取的用户设备的第一协作发射集和第二校正集的交集确定为用户设备的 第二协作发射集。
可选地， 作为另一个实施例， 处理器 401具体用于： 从网络控制器中 获取至少一个第一校正集； 或者具体用于： 从参考小区的基站中获取至少 一个第一校正集， 参考小区为用户设备的第一协作发射集中的一个小区。
可选地， 作为另一个实施例， 处理器 401具体用于： 获取至少一个包 含用户设备服务小区的第一校正集。
可选地， 作为另一个实施例， 当参与 JT相干发射为多个用户设备且 用户设备为多个用户设备之一时， 发射器 403具体用于： 根据获取的多个 用户设备分别对应的第二协作发射集的交集对用户设备进行 JT 相干发 射。
可选地， 处理器 401还可以用于确认用户设备是否需要进行 JT相干 发射， 通过接收器 404接收的用户设备反馈的测量信息进行判断。 如某个 用户设备反馈的服务小区的 CQI或 RSRP小于某个门限值时，处理器 401 还可以用于确定该用户设备为边缘用户设备， 因此， 确认该用户设备需要 进行 JT相干发射。
可选地，处理器 401还可以用于估算釆用第二协作发射集为用户设备 进行 JT相干发射的信号增益是否大于其它非 JT相干发射模式的信号增 益。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的 各示例的单元及算法步骤， 能够以电子硬件、 或者计算机软件和电子硬件 的结合来实现。 这些功能究竟以硬件还是软件方式来执行， 取决于技术方 案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使 用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范 围。
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。
所述功能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， 仅为本发明的具体实施方式， 但本发明的保护范围并不局 限于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可 轻易想到变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明 的保护范围应所述以权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种协作发射集的确定方法， 其特征在于， 包括：
获取用户设备的第一协作发射集， 并获取至少一个第一校正集， 所述 至少一个第一校正集中的每个第一校正集包括至少两个小区， 所述至少两 个小区中的任两个小区之间已完成联合通道校正， 所述第一协作发射集包 括为所述用户设备提供协作发射的至少一个小区的集合；
根据所述用户设备的第一协作发射集和所述至少一个第一校正集确定 所述用户设备的第二协作发射集；
根据所述用户设备的第二协作发射集对所述用户设备进行联合发送 JT 相干发射。
2、 如权利要求 1所述的方法， 其特征在于， 所述至少一个第一校正集 为一个第一校正集， 所述根据所述用户设备的第一协作发射集和所述至少 一个第一校正集确定所述用户设备的第二协作发射集， 包括：
将所述用户设备的第一协作发射集和所述一个第一校正集的交集确定 为所述用户设备的第二协作发射集。
3、 如权利要求 1所述的方法， 其特征在于， 所述至少一个第一校正集 为多个第一校正集， 所述根据所述用户设备的第一协作发射集和所述至少 一个第一校正集确定所述用户设备的第二协作发射集， 包括：
将所述多个第一校正集的并集确定为第二校正集；
将所述用户设备的第一协作发射集和所述第二校正集的交集确定为所 述用户设备的第二协作发射集。
4、 如权利要求 1-3任一项所述的方法， 其特征在于， 所述获取至少一 个第一校正集， 包括：
获取至少一个包含所述用户设备服务小区的第一校正集。
5、 如权利要求 1-4任一项所述的方法， 其特征在于， 所述获取至少一 个第一校正集， 包括：
从网络控制器中获取所述至少一个第一校正集； 或者
从参考小区的基站中获取所述至少一个第一校正集， 所述参考小区为 所述用户设备的第一协作发射集中的一个小区。
6、 如权利要求 1-5任一项所述的方法， 其特征在于， 当参与 JT相干 发射为多个用户设备且所述用户设备为所述多个用户设备之一时， 所述根 据所述用户设备的第二协作发射集对所述用户设备进行 JT 相干发射， 包 括：
根据所述多个用户设备分别对应的第二协作发射集的交集对所述用户 设备进行 JT相干发射。
7、 如权利要求 1-6任一项所述的方法， 其特征在于， 所述用户设备的 第一协作发射集为静态协作发射集或半静态协作发射集或动态协作发射
8、 一种基站， 其特征在于， 包括：
获取单元， 用于获取用户设备的第一协作发射集， 并获取至少一个第 一校正集， 所述至少一个第一校正集中的每个第一校正集包括至少两个小 区， 所述至少两个小区中的任两个小区之间已完成联合通道校正， 所述每 个第一校正集包括至少两个小区， 所述第一协作发射集包括为所述用户设 备提供协作发射的至少一个小区的集合；
确定单元， 用于根据所述获取单元获取的所述用户设备的第一协作发 射集和所述至少一个第一校正集确定所述用户设备的第二协作发射集； 发射单元， 用于根据所述确定单元确定的所述用户设备的第二协作发 射集对所述用户设备进行联合发送 JT相干发射。
9、 如权利要求 8所述的基站， 其特征在于，
所述确定单元具体用于： 将所述获取单元获取的所述用户设备的第一 协作发射集和所述一个第一校正集的交集确定为所述用户设备的第二协作 发射集。
10、 如权利要求 8所述的基站， 其特征在于，
所述确定单元具体用于： 将所述获取单元获取的所述多个第一校正集 的并集确定为第二校正集； 将所述获取单元获取的所述用户设备的第一协 作发射集和所述第二校正集的交集确定为所述用户设备的第二协作发射
11、 如权利要求 8-10任一项所述的基站， 其特征在于， 所述获取单元具体用于： 获取至少一个包含所述用户设备服务小区的 第一校正集。
12、 如权利要求 8-11任一项所述的基站， 其特征在于，
所述获取单元
具体用于： 从网络控制器中获取所述至少一个第一校正集； 或者 具体用于： 从参考小区的基站中获取所述至少一个第一校正集， 所述 参考小区为所述用户设备的第一协作发射集中的一个小区。
13、 如权利要求 8-12任一项所述的基站， 其特征在于， 当参与 JT相 干发射为多个用户设备且所述用户设备为所述多个用户设备之一时，
所述发射单元具体用于： 根据所述获取单元获取的所述多个用户设备 分别对应的第二协作发射集的交集对所述用户设备进行 JT相干发射。
14、 如权利要求 8-13任一项所述的方法， 其特征在于， 所述用户设备 的第一协作发射集为静态协作发射集或半静态协作发射集或动态协作发射
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