WO2015035603A1 - Procédé d'envoi d'informations de commande de liaison montante, équipement utilisateur et station de base - Google Patents

Procédé d'envoi d'informations de commande de liaison montante, équipement utilisateur et station de base Download PDF

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Publication number
WO2015035603A1
WO2015035603A1 PCT/CN2013/083456 CN2013083456W WO2015035603A1 WO 2015035603 A1 WO2015035603 A1 WO 2015035603A1 CN 2013083456 W CN2013083456 W CN 2013083456W WO 2015035603 A1 WO2015035603 A1 WO 2015035603A1
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WO
WIPO (PCT)
Prior art keywords
base station
user equipment
control information
uplink control
csi
Prior art date
Application number
PCT/CN2013/083456
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English (en)
Chinese (zh)
Inventor
王轶
张翼
张磊
Original Assignee
富士通株式会社
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 富士通株式会社 filed Critical 富士通株式会社
Priority to PCT/CN2013/083456 priority Critical patent/WO2015035603A1/fr
Priority to CN201380077421.8A priority patent/CN105379160B/zh
Publication of WO2015035603A1 publication Critical patent/WO2015035603A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, a user equipment, and a base station for transmitting uplink control information of a user equipment that is connected to at least two base stations.
  • a base station can configure multiple downlink carriers and/or multiple uplink carriers, ie, carrier aggregation, for user equipment (UE).
  • UE user equipment
  • UE user equipment
  • the user equipment feeds back the ACK/NACK corresponding to the Physical Downlink Shared Channel (PDSCH)
  • PDSCH Physical Downlink Shared Channel
  • channel selection of physical uplink control channel format la/lb can be configured to carry ACK/NACK;
  • the user equipment of the downlink carrier may configure PUCCH format 3 to carry ACK/NACK of up to 5 downlink carriers.
  • Uplink Control Information in addition to ACK/NACK, may also include Channel State Information (CSI), Scheduling Request (SR).
  • CSI Channel State Information
  • SR Scheduling Request
  • the UE may send a UCI or multiple UCIs at the same time.
  • the user equipment may separately send ACK/NACK, CSI or SR, but may also send ACK/NACK and CSI at the same time, or may simultaneously send CSI and SR, or simultaneously send ACK/NACK and CSI, or send three at the same time.
  • the PUCCH format used by the user equipment is different.
  • a user configured with format 3 sends a SR in format 1 when only SR is sent.
  • SR and ACK/NACK are sent simultaneously, it can be sent in format 3.
  • whether the PUCCH format adopted by the user equipment is related to whether or not there is a PDSCH transmission only on the primary carrier. For example, if user equipment is configured with format 3, if there is only PDSCH transmission on the primary carrier, format la/lb is used to feed back ACK/NACK, otherwise format 3 is used to feed back ACK/NACK.
  • PUSCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Shared Channel
  • the PUCCH carries ACK/NACK or CSI
  • the PUCHCH carries ACK/NACK
  • the PUSCH carries CSI, thereby reducing UCI to PUSCH data transmission. Impact.
  • the base station In the existing carrier aggregation, multiple carriers configured for one user equipment are controlled by one base station, and it can be considered that a loop between multiple carriers (Backhaul) is ideal. Therefore, the base station explicitly knows whether there is PDSCH transmission on each carrier, so whether there is a corresponding ACK/NACK transmission, and whether there is a corresponding CSI transmission, so that it can clearly know what mode or format the user equipment is used for transmission. Although the user equipment may miss the PDCCH on some carriers and miss the PDSCH, the user equipment sends the same manner as the base station receives. However, this possibility is low and does not affect the base station.
  • each small base station has a small coverage area and a large number.
  • the small base station can occupy different frequency points from the macro base station, and can also occupy the same frequency point.
  • the loop between the small base station and the macro base station can be ideal, the instantaneous delay is small or completely negligible, and the transmission capability is strong. More typically, it is non-ideal, that is, the transmission delay is large and the transmission capacity is limited.
  • FIG. 1 is a schematic diagram of a user equipment maintaining a connection with a macro base station and a small base station. As shown in FIG. 1, if the user equipment can remain connected to the small base station and the macro base station at the same time, the user equipment can work in an inter-eNB similar to that of different eNBs.
  • the inventors have found that since the small base station and the macro base station belong to different eNBs, and the loop is not ideal, it is basically impossible for the base station to obtain information about real-time scheduling of other base stations.
  • the macro base station cannot know the dynamic scheduling of the PDSCH in each subframe of the small base station or the dynamic scheduling of the uplink PUSCH. Therefore, the corresponding ACK/NACK transmission cannot be known, and the location information of the PUSCH cannot be known.
  • time division multiplexing can be adopted. That is, the user equipment turns to access different base stations in a time-division manner; or the user equipment is fixedly connected to the uplink of one base station, and the other base station obtains corresponding information by listening or receiving information through the receiving base station. Line control information.
  • uplink control information that carries multiple carriers on one uplink carrier may occur, for example, uplink control information of a macro base station and a small base station is transmitted on a macro base station, and is similar to control information that the existing carrier aggregation transmits all carriers on the primary carrier. . Since the macro base station cannot obtain the real-time scheduling information of the small base station, the small base station cannot obtain the real-time scheduling information of the macro base station. Therefore, it is necessary to add some necessary interaction signaling to ensure the correct reception of the base station, and also needs to modify the corresponding mechanism to Avoid multiple ways to send control information, increasing the complexity of base station reception.
  • the embodiment of the invention provides a method for transmitting uplink control information, a user equipment, and a base station.
  • the purpose is to ensure that the user equipment is connected to at least two base stations, and the base station side correctly receives the uplink control information and reduces the complexity of the reception.
  • a method for transmitting uplink control information wherein a user equipment is connected to at least two base stations including a first base station and a second base station, and the sending method includes:
  • the user equipment sends uplink control information to the second base station, so that the second base station forwards the uplink control information to the first base station, or the first base station obtains the uplink control information by monitoring;
  • the PUCCH format carrying the uplink control information is not related to whether there is PDSCH scheduling on one or more carriers; or the resource carrying the uplink control information is independent of whether the PUSCH is used for the random access procedure.
  • a method for transmitting uplink control information where a user equipment is connected to at least two base stations including a first base station and a second base station, and the sending method includes: Transmitting the periodic CSI to the second base station according to the periodic configuration, so that the second base station forwards the periodic CSI to the first base station, or the first base station obtains the periodic CSI by monitoring;
  • the periodic configuration includes 4ms or 8Nms; where N is a positive integer.
  • a method for transmitting uplink control information where a user equipment is connected to at least two base stations including a first base station and a second base station, and the sending method includes: Receiving a request for triggering the aperiodic CSI report sent by the second base station; the user equipment reporting the aperiodic CSI related to the first base station, so that the second base station forwards the The aperiodic CSI, or the first base station obtains the aperiodic CSI by monitoring.
  • a method for transmitting uplink control information where a user equipment is connected to at least two base stations including a first base station and a second base station, and the sending method includes: The second base station receives the request for triggering the aperiodic CSI report sent by the first base station, and sends the request for triggering the aperiodic CSI report to the user equipment, so that the user equipment reports the first Base station related aperiodic CSI.
  • a user equipment which is connected to at least two base stations including a first base station and a second base station, where the user equipment includes:
  • the information sending unit sends the uplink control information to the second base station, so that the second base station forwards the uplink control information to the first base station, or the first base station obtains the uplink control information by monitoring;
  • the PUCCH format carrying the uplink control information is not related to whether the PDSCH scheduling is performed on one or more carriers; or the resource carrying the uplink control information is independent of whether the PUSCH is used for the random access procedure.
  • a user equipment which is connected to at least two base stations including a first base station and a second base station, where the user equipment includes:
  • the information sending unit sends the periodic CSI to the second base station according to the periodic configuration, so that the second base station forwards the periodic CSI to the first base station, or the first base station obtains the period by monitoring CSI; wherein the periodic configuration includes 4ms or 8Nms; where N is a positive integer.
  • a user equipment which is connected to at least two base stations including a first base station and a second base station, where the user equipment includes:
  • the receiving unit Instructing the receiving unit to receive the indication of triggering the aperiodic CSI report sent by the second base station; the information reporting unit reporting the aperiodic CSI related to the first base station, so that the second base station is to the first The base station forwards the aperiodic CSI, or the first base station obtains the aperiodic CSI by monitoring.
  • a base station wherein a user equipment is connected to at least two base stations including a first base station and the base station, and the base station includes:
  • the request receiving unit receives the request for triggering the aperiodic CSI report sent by the first base station, and the sending unit sends the request for triggering the aperiodic CSI report to the user equipment, so that the user equipment reports the location The aperiodic CSI associated with the first base station.
  • a communication system comprising the user equipment as described above; or comprising the user equipment and the base station as described above.
  • a computer readable program is provided, wherein when executed in a base station When the program is executed, the program causes the computer to execute the transmission method of the uplink control information as described above in the base station.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a transmission method of uplink control information as described above in a base station.
  • a computer readable program wherein when the program is executed in a user equipment, the program causes a computer to perform uplink control information as described above in the user equipment Send method.
  • a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a method of transmitting uplink control information as described above in a user equipment.
  • the effect of the embodiment of the present invention is that, by increasing the interaction signaling between the base stations or between the base station and the user equipment, and the user equipment sends the uplink control information to the second base station, the second base station forwards the uplink control information to the first base station, or The first base station obtains uplink control information by monitoring; not only can ensure correct reception of uplink control information by the base station, but also avoid multiple ways of transmitting control information, and reduce the complexity of receiving uplink control information by the base station.
  • FIG. 1 is a schematic diagram of a user equipment maintaining a connection with a macro base station and a small base station;
  • FIG. 2 is a schematic flowchart of a method for transmitting uplink control information according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic flowchart of a method for transmitting uplink control information according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic flowchart of another method for transmitting uplink control information according to Embodiment 3 of the present invention
  • FIG. 6 is a schematic diagram of a scenario for transmitting uplink control information according to Embodiment 3 of the present invention
  • 7 is a schematic flowchart of another method for transmitting uplink control information according to Embodiment 3 of the present invention
  • FIG. 8 is a schematic diagram of a configuration of a user equipment according to Embodiment 4 of the present invention
  • FIG. 9 is a schematic structural diagram of a user equipment according to Embodiment 5 of the present invention.
  • FIG. 10 is a schematic structural diagram of a user equipment according to Embodiment 6 of the present invention.
  • Figure 11 is a block diagram showing the structure of a base station according to Embodiment 6 of the present invention.
  • Figure 12 is a block diagram showing the configuration of a communication system according to a seventh embodiment of the present invention.
  • the user equipment can be connected to one or more macro base stations of the same frequency point and simultaneously connected to one or more small base stations of the same frequency point.
  • the uplink control information of each base station of the same frequency point may be sent according to an existing standard, or may be sent according to a newly defined manner.
  • each base station can be configured with a single or multiple carriers.
  • the uplink control information of multiple carriers on one base station may be sent according to an existing standard, or may be sent according to a newly defined manner.
  • the following is an example in which the user equipment is connected to the first base station and the second base station as an example.
  • the present invention is not limited thereto, and for example, it may be connected to more than two base stations.
  • FIG. 2 is a schematic flowchart of a method for sending uplink control information according to an embodiment of the present invention. As shown in FIG. 2, the sending method includes:
  • Step 201 The user equipment sends the uplink control information to the second base station, so that the second base station forwards the uplink control information to the first base station, or the first base station obtains the uplink control information by monitoring.
  • the PUCCH format carrying the uplink control information is independent of whether there is a PDSCH scheduling on one or more carriers; or the resource carrying the uplink control information is independent of whether the PUSCH is used for the random access procedure.
  • the uplink control information includes an ACK/NACK
  • the user equipment carries an ACK/NACK by using a PUCCH format that is independent of the corresponding PDSCH transmission on which carriers; or, the uplink control information includes the CSI, and the user equipment does not depend on whether the ACK/NACK is included.
  • the resource carries the CSI; or, the uplink control information includes a scheduling request, and the user equipment carries the scheduling request by using a PUCCH format that is not related to whether the ACK/NACK is included; or the uplink control information includes the CSI and/or the ACK/NACK, and the user equipment passes the PUSCH Whether the resource used for random access procedure independent carries CSI and/or ACK/NACK.
  • the user equipment is connected to the second base station and has an uplink, and the user equipment may use the uplink to send uplink control information; where the uplink control information may include information related to the second base station. , and/or information related to the first base station.
  • the second base station may forward the information to the first base station.
  • the first base station may obtain uplink control information sent by the user equipment by monitoring.
  • the CSI and/or ACK/NACK are carried by resources that are independent of whether the PUSCH is used for the random access procedure; a variety of ways in which control information may be transmitted may be avoided.
  • an implementation method may be: if the base station side can learn the scheduling situation of the PUSCH, for example, whether there is PUSCH transmission at the time n, the following may be preferentially followed according to the case where there is a PUSCH and no PUSCH, respectively. Way to receive. If the scheduling of the PUSCH is not known to the base station, it needs to be detected separately according to the maximum of two cases. Therefore, the complexity of receiving uplink control information on the base station side can be reduced.
  • the user equipment is configured to be capable of supporting more than two downlink carrier feedback PUCCH formats.
  • the user equipment may be configured to be able to use PUCCH format 3, or other PUCCH format X that can simultaneously support ACK/NACK feedback of more than two downlink carriers.
  • the user equipment is further configured to be able to transmit the PUCCH and the PUSCH at the same time, the user equipment uses the PUCCH format capable of supporting more than two downlink carrier feedbacks simultaneously, and carries one or more downlink carriers, in the case that only the ACK/NACK needs to be reported.
  • ACK/NACK The user equipment does not detect the PDSCH on only one downlink carrier or the PDSCH on multiple downlink carriers, but adopts different PUCCH formats.
  • a typical scenario of the present embodiment may be a scenario in which a user equipment sends an uplink signal to only one base station, but multiple base stations receive the same time; or a scenario in which the user equipment sends an uplink signal to only one base station and is forwarded by the base station to other base stations.
  • the present embodiment can be applied to a case where uplink PUSCH transmission is possible at the same time, and can also be applied to a case where only PUCCH transmission is performed.
  • the present invention is not limited thereto, and a specific scene or situation can be determined based on actual conditions.
  • the user equipment is configured to be capable of simultaneously supporting PUCCH formats greater than two downlink carrier feedbacks, and is capable of transmitting PUCCH and PUSCH simultaneously.
  • the uplink control information includes periodic CSI
  • the user equipment carries the uplink control information by using a PUCCH format capable of supporting more than two downlink carrier feedbacks at the same time.
  • the periodic CSI is carried by PUCCH format 3/X, whether or not it also includes ACK/NACK or SR, or whether there is still PUSCH transmission.
  • the uplink control information overhead exceeds the maximum cost of PUCCH format 3/X, the user equipment will drop the periodic CSI and only send ACK/NACK and/or SR.
  • a typical scenario of the present embodiment may be a scenario in which a user equipment sends an uplink signal to only one base station, but multiple base stations receive the same time; or a scenario in which the user equipment sends an uplink signal to only one base station and is forwarded by the base station to other base stations.
  • the present embodiment can be applied to a case where uplink PUSCH transmission is possible at the same time, and can also be applied to a case where only PUCCH transmission is performed. If there is a PUSCH transmission at the same time, PUSCH will also be sent.
  • the user equipment discards the periodic CSI; if the PUSCH is transmitted, the user equipment multiplexes the periodic CSI into the PUSCH.
  • the periodic CSI is carried by PUCCH format 3 X regardless of whether there is ACK/NACK and/or SR. If the uplink control information overhead exceeds the maximum overhead of PUCCH format 3/X, the user will drop the periodic CSI and only send ACK/NACK and/or SR. If there is PUSCH transmission, the periodic CSI is multiplexed into the PUSCH for transmission, regardless of whether there is ACK/NACK.
  • the user equipment is configured to be capable of supporting more than two downlink carrier feedback PUCCH formats at the same time; the uplink control information includes an SR.
  • the present embodiment can reuse the prior art. For example, if there is only SR, it is carried by PUCCH format 1; if the user equipment receives PDSCH only on the primary carrier, it carries SR+ACK/NACK with PUCCH format la/lb; if PDSCH is received on other carriers, PUCCH format 3/X carries SR+ACK/NACK.
  • the user equipment carries the SR in a PUCCH format capable of supporting more than two downlink carrier feedbacks at the same time.
  • the user equipment can send the SR through PUCCH format 3/X regardless of whether there is ACK/NACK.
  • the user equipment in the case that only the scheduling request needs to be reported, the user equipment carries the SR in the PUCCH format that supports the feedback of the two downlink carriers at the same time; and in the case that the uplink control information includes the SR and the ACK/NACK, the user equipment can support the same at the same time.
  • the PUCCH format that is greater than two downlink carrier feedbacks carries uplink control information.
  • the user equipment may send the SR through PUCCH format 1; if there is also ACK/NACK, the PUCCH format 3/X bearer is adopted even if the user equipment only receives the PDSCH on the primary carrier.
  • a typical scenario of the foregoing three methods in this embodiment may be a scenario in which the user equipment sends an uplink signal to only one base station, but multiple base stations receive the same time; or the user equipment sends an uplink signal only to one base station, and the base station sends the uplink signal to the other base station. Forwarded scene.
  • the present invention is not limited thereto, and a specific scenario or situation may be determined according to actual conditions.
  • the user equipment is configured to simultaneously support the PUCCH format of more than two downlink carrier feedbacks and can simultaneously transmit the PUCCH and the PUSCH.
  • the invention is not limited to this example
  • the uplink control information can also be combined.
  • the PUCCH format 3/X bearer may be employed even if the user equipment receives the PDSCH only on the primary carrier. If the uplink control information includes periodic CSI and ACK/NACK, the PUCCH format 3/X bearer may be used, or the periodic CSI may be multiplexed into the PUSCH. If the uplink control information includes periodic CSI and SR, PUCCH format 3/X bearer can be used. If the uplink control information includes ACK/NACK, periodic CSI, and SR, the PUCCH format 3/X bearer can still be used.
  • the following is a description of the case where the user equipment is configured to support the PUCCH format of more than two downlink carrier feedbacks simultaneously, and the PUCCH and PUSCH cannot be simultaneously transmitted.
  • the user equipment when the uplink control information is only related to the second base station, the user equipment carries the uplink control information in the PUSCH; in the case that the uplink control information is also related to the first base station, the user equipment controls the uplink.
  • the information is carried in the PUCCH.
  • the user equipment uses an PUCCH format capable of supporting more than two downlink carrier feedbacks simultaneously, and carries ACK/NACK of one or more downlink carriers.
  • the user equipment can use the PUCCH format.
  • 3 or PUCCH format X sends ACK/NACK for single or multiple downlink carriers. If it is possible to transmit the PUSCH at time n, if only the uplink control information related to the second base station (i.e., the base station having the uplink between the user equipments) is included, the uplink control information is transmitted in the PUSCH. If it is possible to transmit the PUSCH at time n, if the uplink control information related to the first base station is included, the user equipment will not transmit the PUSCH and only transmit the PUCCH; and, the user equipment may send the single or multiple using PUCCH format 3 or PUCCH format X. ACK/NACK of the downlink carrier.
  • a typical scenario in this embodiment may be a scenario in which a user equipment sends an uplink signal to only one base station but multiple base stations simultaneously receive.
  • the present invention is not limited thereto, and a specific scenario or situation may be determined according to actual conditions.
  • all uplink control information may be multiplexed into the PUSCH in full accordance with existing standards.
  • the uplink control information includes ACK/NACK and SR, or includes periodic CSI and ACK/NACK, or includes periodic CSI and SR, or includes ACK/NACK, periodic CSI, and SR.
  • the uplink control information is only related to the second base station, the user equipment carries the uplink control information in the PUSCH; and the uplink control information is also related to the first base station.
  • the user equipment carries the uplink control information in the PUCCH.
  • the PUSCH or PUCCH is specifically used, the prior art or the embodiments already described above may be employed.
  • the user equipment is not configured to support the PUCCH format of more than two downlink carrier feedbacks at the same time, and the PUCCH and the PUSCH can be simultaneously transmitted.
  • the user equipment is not configured with PUCCH format 3 or other PUCCH format X that can support ACK/NACK feedback of more than 2 downlink carriers at the same time, for example, PUCCH format la/lb is configured.
  • the user equipment carries the periodic CSI by using the PUCCH format 2/2a/2b; and the uplink control information includes the second base station.
  • the user equipment multiplexes the ACK/NACK associated with the second base station into the PUSCH.
  • the user equipment will send periodic CSI using PUCCH format 2/2a/2b, or may send periodic CSI along with ACK/NACK. If there is an ACK/NACK of the second base station, the ACK/NACK of the second base station is multiplexed into the PUSCH.
  • the user equipment carries the periodic CSI and the PUCCH format 2/2a/2b. ACK/NACK; or in case the uplink control information includes periodic CSI related to the first base station and ACK/NACK related to multiple base stations, the user equipment discards the periodic CSI and uses the PUCCH format la/lb to carry the ACK/ NACK.
  • the user equipment will carry CSI and ACK/NACK with PUCCH format 2a/2b.
  • the user equipment will drop the periodic CSI and select to send the ACK/NACK with the PUCCH format la/lb channel.
  • the prior art can be utilized. For example, if there is PUSCH transmission, the periodic CSI is multiplexed into the PUSCH, and the ACK/NACK is transmitted by using the PUCCH format la/lb channel.
  • a typical scenario in this embodiment may be a scenario in which a user equipment sends an uplink signal to only one base station but multiple base stations simultaneously receive.
  • the present invention is not limited thereto, and a specific scenario or situation may be determined according to actual conditions.
  • the user equipment carries the periodic CSI using the PUSCH; and in the case where the uplink control information includes ACK/NACK, the user equipment carries the ACK/NACK using the PUCCH format la/lb. Specifically, the user equipment will send periodic CSI in the PUSCH, whether the periodic CSI is the CSI of the first base station or the CSI of the second base station. In addition, if there is ACK/NACK, it is transmitted in PUCCH Format la/lb channel selection.
  • a typical scenario in this embodiment may be a scenario in which a user equipment sends an uplink signal to only one base station and is forwarded by the base station to other base stations.
  • the present invention is not limited thereto, and a specific scenario or situation may be determined according to actual conditions.
  • the prior art may be used, and details are not described herein.
  • the ACK/NACK is carried by the PUCCH format irrespective of which carriers have corresponding PDSCH transmission, or the CSI is carried by the resource irrespective of whether the ACK/NACK is included, or the PUCCH is not related to whether the ACK/NACK is included or not.
  • the format carries a scheduling request, or carries a CSI and/or an ACK/NACK by using a resource that is not related to whether the PUSCH is used for the random access procedure. It may be avoided that multiple ways of sending control information may be avoided, and the complexity of receiving the uplink control information by the base station side is reduced. degree.
  • FIG. 3 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present invention. As shown in FIG. 3, the sending method includes:
  • the user equipment is connected to the second base station and has an uplink, and the user equipment may use the uplink to send uplink control information; where the uplink control information may include information related to the second base station. , and/or information related to the first base station.
  • the second base station may forward the information to the first base station.
  • the first base station may obtain uplink control information sent by the user equipment by monitoring.
  • the user equipment can be connected to the first base station and the second base station in a time division multiplexing (TDM) manner, that is, the user equipment turns over in a time division manner.
  • TDM time division multiplexing
  • the periodic configuration of the periodic CSI report can be increased.
  • the values from 542 to 1023 in the existing standards can be used, and Frequency Division Duplex (FDD) and Time Division Duplex (TDD) are applicable.
  • Tables 1 and 2 show the case for FDD and TDD, respectively.
  • OFFSET The meaning of OFFSET, CQI, etc. can refer to existing standards.
  • the periodic configuration of the periodic CSI it may be applicable to a scenario in which the user equipment stays connected with at least two base stations including the first base station and the second base station.
  • the period of the TDM mode is 8 ms
  • the period of the periodic CSI is increased by 4 ms or 8 Nms, which can be consistent with the TDM mode, thereby reducing the situation of incorrect demodulation of periodic CSI and improving the efficiency of receiving periodic CSI on the base station side.
  • FIG. 4 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present invention, which is described from the user equipment side.
  • the sending method includes: Step 401: A user equipment receives a request for triggering an aperiodic CSI report sent by a second base station; Step 402: A user equipment reports an aperiodic CSI related to a first base station, so that The second base station is first The base station forwards the aperiodic CSI, or the first base station obtains the aperiodic CSI by listening.
  • FIG. 5 is another schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present invention, which is described from the second base station side. As shown in FIG. 5, the sending method includes:
  • Step 501 The second base station receives the request for triggering the aperiodic CSI report sent by the first base station.
  • Step 502 The second base station sends a request for triggering the aperiodic CSI report to the user equipment, so that the user equipment reports the information related to the first base station.
  • Aperiodic CSI Aperiodic CSI.
  • the user equipment may use the uplink to send uplink control information; where the uplink control information may include information related to the second base station, and/or A base station related information.
  • the second base station may forward the information to the first base station.
  • the first base station may obtain uplink control information sent by the user equipment by monitoring.
  • the first base station when the first base station expects the user equipment to report the downlink carrier aperiodic CSI of the first base station, the first base station sends a request for triggering the aperiodic CSI report to the second base station.
  • the second base station is a base station that maintains an uplink connection with the user equipment, and the user equipment can perform uplink signal transmission on the uplink carrier of the second base station.
  • the second base station may trigger the user equipment to report the downlink carrier aperiodic CSI under the first base station, which is requested by the first base station, by using downlink control information (DCI, Downlink Control Information).
  • DCI Downlink Control Information
  • FIG. 6 is a schematic diagram of a scenario of a method for transmitting uplink control information according to an embodiment of the present invention.
  • the user equipment can maintain a connection with the base station 1 and the base station; the base station 2 can communicate via a frequency point/, and the base station 1 can communicate via the frequency point / / 2.
  • the base station 2 and the user There is an uplink between devices.
  • FIG. 7 is another schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present invention, showing a situation in which a first base station, a second base station, and a user equipment interact. As shown in Figure 7, the method includes:
  • Step 701 The first base station sends a request for triggering an aperiodic CSI report to the second base station.
  • the second base station is a base station that maintains an uplink connection with the user equipment, for example, a macro base station MeNB; and the first base station is, for example, a small base station SeNB.
  • the user equipment can perform uplink signal transmission on the uplink carrier of the second base station.
  • Step 702 After receiving the request of the first base station, the second base station sends a trigger aperiodic CSI to the user equipment. Instructions for reporting.
  • the user equipment is triggered by the DCI to report the aperiodic CSI requested by the first base station.
  • the aperiodic CSI For example, it can be indicated by 2 bits, "00” means no transmission, "01” means aperiodic CSI of the first base station, "10” means aperiodic CSI of the second base station, and "11” means the first transmission.
  • the present invention is not limited thereto, and for example, indications may be made in other manners.
  • Step 703 The user equipment reports the aperiodic CSI of the first base station according to the indication.
  • the method may further include:
  • Step 704 After receiving the aperiodic CSI, the second base station forwards the aperiodic CSI report information to the first base station.
  • the first base station may listen to the aperiodic sent by the user equipment.
  • the first base station receives the report information at the frequency/point of the second base station.
  • the second base station may further receive information related to the aperiodic CSI sent by the first base station, so that the second base station correctly demodulates the aperiodic CSI.
  • the second base station and the first base station may be required to interact with the time-frequency resource information of the aperiodic CSI that the UE will send.
  • the first base station can inform the second base station of the information about the aperiodic CSI, so that the second base station can correctly demodulate the aperiodic CSI and correctly demodulate the PUSCH.
  • the information related to the aperiodic CSI may include one or a combination of the following information: a total number of bits of the aperiodic CSI, a type of the aperiodic CSI, a bandwidth of the downlink carrier, a maximum rank of the downlink carrier, and a configuration.
  • Information about the PMI feedback value may be required to interact with the time-frequency resource information of the aperiodic CSI that the UE will send.
  • the first base station can inform the second base station of the information about the aperiodic CSI, so that the second base station can correctly demodulate the aperiodic CSI and correctly de
  • the overhead of the aperiodic CSI can be informed, that is, the total number of bits; for example, the type of the aperiodic CSI needs to be notified, including 1-2, 2-0, 2-2, 3-0, 3-1, 3-2. And other possible types. You can also tell the bandwidth of the downlink carrier, the maximum possible rank, whether to configure the feedback value of the PMI, and so on.
  • the present invention is not limited to this, and specific interactive content can be determined according to actual needs.
  • the embodiment of the invention provides a user equipment, which is connected to at least two base stations including a first base station and a second base station.
  • This embodiment corresponds to the method for transmitting uplink control information in Embodiment 1, and the same content is no longer ⁇ Said.
  • FIG. 8 is a schematic diagram of a configuration of a user equipment according to an embodiment of the present invention.
  • the user equipment 800 includes: an information sending unit 801. Other parts of the user device 800 are not shown, reference may be made to the prior art.
  • the information sending unit 801 sends the uplink control information to the second base station, so that the second base station forwards the uplink control information to the first base station, or the first base station obtains the uplink control information by monitoring.
  • the PUCCH format carrying the uplink control information is independent of whether there is a PDSCH scheduling on one or more carriers; or the resource carrying the uplink control information is independent of whether the PUSCH is used for the random access procedure.
  • the uplink control information includes an ACK/NACK
  • the information sending unit 801 carries an ACK/NACK by using a PUCCH format that is independent of the corresponding PDSCH transmission on which carriers; or, the uplink control information includes CSI, and the information sending unit 801 passes and includes
  • the ACK/NACK-independent resource carries the CSI; or the uplink control information includes the scheduling request, and the information sending unit 801 carries the scheduling request by using the PUCCH format irrespective of whether the ACK/NACK is included; or the uplink control information includes the CSI and/or the ACK/NACK.
  • the information transmitting unit 801 carries CSI and/or ACK/NACK by resources that are independent of whether the PUSCH is used for the random access procedure.
  • the ACK/NACK is carried by the PUCCH format irrespective of which carriers have corresponding PDSCH transmission, or the CSI is carried by the resource irrespective of whether the ACK/NACK is included, or the PUCCH is not related to whether the ACK/NACK is included or not.
  • the format carries a scheduling request, or carries a CSI and/or an ACK/NACK by using a resource that is not related to whether the PUSCH is used for the random access procedure. It may be avoided that multiple ways of sending control information may be avoided, and the complexity of receiving the uplink control information by the base station side is reduced. degree.
  • the embodiment of the invention provides a user equipment that is connected to at least two base stations including a first base station and a second base station. This embodiment corresponds to the method for transmitting uplink control information in Embodiment 2, and the same content will not be described again.
  • FIG. 9 is a schematic diagram of a configuration of a user equipment according to an embodiment of the present invention.
  • the user equipment 900 includes: an information sending unit 901. Other parts of the user equipment 900 are not shown, reference may be made to the prior art.
  • the information sending unit 901 sends the periodic CSI to the second base station according to the periodic configuration, so that the second base station forwards the periodic CSI to the first base station, or the first base station obtains the periodic CSI by monitoring; wherein the periodic configuration includes 4ms or 8Nms. ; where N is a positive integer.
  • the periodic configuration includes 4ms or 8Nms. ; where N is a positive integer.
  • the period of the TDM mode is 8 ms
  • the period of the periodic CSI is increased by 4 ms or 8 Nms, which can be consistent with the TDM mode, thereby reducing the situation of incorrect demodulation of periodic CSI and improving the efficiency of receiving periodic CSI on the base station side.
  • the embodiment of the invention provides a user equipment and a base station, and the user equipment is connected to at least two base stations including the first base station and the base station.
  • This embodiment corresponds to the method for transmitting uplink control information in Embodiment 3, and the same content is not described herein again.
  • FIG. 10 is a schematic diagram of a configuration of a user equipment according to an embodiment of the present invention.
  • the user equipment 1000 includes: an indication receiving unit 1001 and an information reporting unit 1002. Other parts of the user device 1000 are not shown, and reference may be made to the prior art.
  • the indication receiving unit 1001 receives the indication of triggering the aperiodic CSI report sent by the second base station; the information reporting unit 1002 reports the aperiodic CSI related to the first base station, so that the second base station forwards the aperiodic CSI to the first base station. Or the first base station obtains aperiodic CSI by monitoring.
  • FIG. 11 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station 1100 includes: a request receiving unit 1101 and an indication transmitting unit 1102. Other parts not shown in the figure of the base station 1100 can be referred to the prior art.
  • the request receiving unit 1101 receives the request for triggering the aperiodic CSI report sent by the first base station, and the indication sending unit 1102 sends an indication for triggering the aperiodic CSI report to the user equipment, so that the user equipment reports the aperiodic associated with the first base station.
  • Sexual CSI
  • the base station 1100 may further include: an information receiving list and an information forwarding unit.
  • the information receiving unit receives the aperiodic CSI related to the first base station sent by the user equipment; the information forwarding unit forwards the aperiodic CSI to the first base station.
  • An embodiment of the present invention provides a communication system, including the user equipment as described in Embodiment 4, or includes The user equipment described in Embodiment 5; or the user equipment and the base station as described in Embodiment 6.
  • Figure 12 is a block diagram showing the construction of a communication system in accordance with an embodiment of the present invention.
  • the communication system 1200 includes a first base station, a second base station, and a user equipment.
  • the first base station or the second base station may be a macro base station or a small base station, and the present invention is not limited thereto.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a user equipment, the program causes the computer to perform uplink control information as described in Embodiments 1-3 above in the user equipment.
  • the method of sending is a computer readable program, wherein when the program is executed in a user equipment, the program causes the computer to perform uplink control information as described in Embodiments 1-3 above in the user equipment. The method of sending.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute a method of transmitting uplink control information as described in Embodiments 1-3 above in the user equipment.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a base station, the program causes a computer to execute a method of transmitting uplink control information as described in Embodiment 3 above in the base station.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute a method of transmitting uplink control information as described in Embodiment 3 above in a base station.
  • the above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, and the like.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

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

Abstract

Les modes de réalisation de la présente invention concernent un procédé d'envoi d'informations de commande de liaison montante, un équipement utilisateur et une station de base. Selon ledit procédé d'envoi, un équipement utilisateur envoie des informations de commande de liaison montante à une seconde station de base afin que cette seconde station de base transmette lesdites informations à une première station de base ou que la première station de base obtienne lesdites informations par écoute. Les modes de réalisation de cette invention permettent non seulement à une station de base de recevoir correctement des informations de commande de liaison montante, mais réduisent également la complexité de cette réception.
PCT/CN2013/083456 2013-09-13 2013-09-13 Procédé d'envoi d'informations de commande de liaison montante, équipement utilisateur et station de base WO2015035603A1 (fr)

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PCT/CN2013/083456 WO2015035603A1 (fr) 2013-09-13 2013-09-13 Procédé d'envoi d'informations de commande de liaison montante, équipement utilisateur et station de base
CN201380077421.8A CN105379160B (zh) 2013-09-13 2013-09-13 上行控制信息的发送方法、用户设备以及基站

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Citations (4)

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CN101911523A (zh) * 2008-01-08 2010-12-08 Lg电子株式会社 定期或不定期发射和接收信道状态信息的方法
WO2011160276A1 (fr) * 2010-06-21 2011-12-29 富士通株式会社 Procédé et dispositif de retour d'informations de l'état d'un canal de système de communication radio
CN102377537A (zh) * 2010-08-10 2012-03-14 电信科学技术研究院 一种上行控制信息uci传输和接收方法及设备
WO2012097526A1 (fr) * 2011-01-21 2012-07-26 富士通株式会社 Procédé de rapport d'informations d'état de canal, station de base et dispositif utilisateur

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CN102104458B (zh) * 2010-07-02 2013-07-31 电信科学技术研究院 上行控制信息的传输方法和设备
CN101917259B (zh) * 2010-08-16 2016-06-15 中兴通讯股份有限公司 非周期信道状态信息报告的触发方法及基站
WO2013006194A1 (fr) * 2011-07-01 2013-01-10 Intel Corporation Livre de codes structuré pour réseau circulaire uniforme (uca)
CN103209483B (zh) * 2012-01-12 2015-09-09 华为技术有限公司 传输上行控制信息的方法、用户设备和基站

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Publication number Priority date Publication date Assignee Title
CN101911523A (zh) * 2008-01-08 2010-12-08 Lg电子株式会社 定期或不定期发射和接收信道状态信息的方法
WO2011160276A1 (fr) * 2010-06-21 2011-12-29 富士通株式会社 Procédé et dispositif de retour d'informations de l'état d'un canal de système de communication radio
CN102377537A (zh) * 2010-08-10 2012-03-14 电信科学技术研究院 一种上行控制信息uci传输和接收方法及设备
WO2012097526A1 (fr) * 2011-01-21 2012-07-26 富士通株式会社 Procédé de rapport d'informations d'état de canal, station de base et dispositif utilisateur

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