WO2014051198A1 - Procédé de génération d'un signal de référence de sondage, procédé d'émission d'un signal de liaison montante et station de base - Google Patents

Procédé de génération d'un signal de référence de sondage, procédé d'émission d'un signal de liaison montante et station de base Download PDF

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Publication number
WO2014051198A1
WO2014051198A1 PCT/KR2012/009522 KR2012009522W WO2014051198A1 WO 2014051198 A1 WO2014051198 A1 WO 2014051198A1 KR 2012009522 W KR2012009522 W KR 2012009522W WO 2014051198 A1 WO2014051198 A1 WO 2014051198A1
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WIPO (PCT)
Prior art keywords
reference signal
sounding reference
terminal
base station
periodic
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PCT/KR2012/009522
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English (en)
Korean (ko)
Inventor
노민석
박규진
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주식회사 케이티
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Publication of WO2014051198A1 publication Critical patent/WO2014051198A1/fr

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    • 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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • 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
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal

Definitions

  • the present invention relates to a sounding reference signal generation method, an uplink transmission method, and a base station.
  • Conventional communication base stations generally include a digital signal processor and a wireless signal processor together in a single physical system.
  • a system has a limitation in optimizing a cell design because a base station including all processing units must be installed in a cell.
  • a plurality of antennas may be connected to one base station to form a cell in a required manner, thereby reducing a coverage hole.
  • the proposed CCC Cloud Communication Center
  • DU digital signal processing unit
  • RU Radio Unit
  • the UE may be located within the coverage of several RUs or may move the coverage of several RUs, and may also receive service from the RU at the cell edge of the various RUs. That is, the coverage of the downlink transmission signal transmitted by the RU and the coverage of the uplink that the terminal should transmit to the RU may be different while the terminal is located or moving.
  • the geometry of the downlink and the geometry of the uplink may be different, and the uplink transmission to the RU different from the RU receiving the data channel and the control channel through the downlink received from the specific RU may be possible. Can be.
  • the case may be similar in a heterogeneous network situation in which macro cell deployment and various small cell deployment are considered. That is, the UE receiving the downlink data and control channel having different coverage of the macro cell and the small cell and transmitting the uplink data and the control channel to the small cell coverage having better geometry for the uplink is received. It can be done.
  • a reference signal transmitted by a terminal belonging to an arbitrary base station can be received only by an arbitrary base station.
  • the reference signal cannot be received.
  • reception does not mean that the reference signal is received by interference, but that the reference signal is received as a desired signal in accordance with the purpose of the signal transmitted by the terminal.
  • the terminal that receives the parameter transmitted from any base station generates reference signals based on the parameters transmitted from the corresponding base station when generating the associated demodulation reference signal and the periodic / aperiodic sounding reference signal. Only transmission from the base station to which the downlink is linked to the uplink is possible, and transmission to the uplink without the downlink and linkage is impossible.
  • a terminal belonging to the base station i.e., a terminal receiving a downlink control channel through the base station does not perform uplink data transmission to the base station, but transmits the uplink to a base station having better channel quality and geometry. Cannot be supported.
  • the terminal transmits the sounding reference signal
  • the sounding reference signal transmitted to the serving base station and the sounding reference signal transmitted to another base station cannot be distinguished.
  • the present invention provides a sounding reference signal generation method, an uplink transmission method, and a base station for distinguishing sounding reference signals transmitted to different base stations.
  • a sounding reference signal generation method of a terminal comprising: receiving sequence information from a serving base station; And generating a first sounding reference signal independent of a sequence used for uplink data and a control channel using the sequence information.
  • the generating of the first sounding reference signal may include:
  • a 1-bit dynamic indication message indicating a radio resource control signaling parameter for the sequence information predefined through radio resource control signaling may be included.
  • It may include a first periodic sounding reference signal and a first aperiodic sounding reference signal generated according to the same sequence information.
  • It may include a first periodic sounding reference signal and a first aperiodic sounding reference signal generated according to the sequence information independent of each other.
  • the first sounding reference signal may be transmitted to a base station other than the serving base station.
  • the method may further include generating a second sounding reference signal using the sequence used for the uplink data and the control channel.
  • the second sounding reference signal may be transmitted to the serving base station.
  • the first sounding reference signal is used by the serving base station to estimate an uplink channel with the terminal
  • the second sounding reference signal is used by the neighboring base station to estimate an uplink channel with the terminal.
  • the first sounding reference signal and the second sounding reference signal are generated according to sequence information and configuration information independent of each other.
  • the method may further include: generating a first periodic sounding reference signal and a first aperiodic sounding reference signal to be transmitted to the serving base station according to independent first configuration information set from the serving base station; And generating a second periodic sounding reference signal and a second aperiodic sounding reference signal to be transmitted to the neighboring base station according to the independent second configuration information set from the serving base station.
  • the method may further include: generating a first periodic sounding reference signal and a first aperiodic sounding reference signal to be transmitted to the serving base station according to the same first configuration information set by the serving base station; And generating a second periodic sounding reference signal and a second aperiodic sounding reference signal to be transmitted to the neighboring base station according to the independent second configuration information set from the serving base station.
  • the method may further include: generating a first periodic sounding reference signal and a first aperiodic sounding reference signal to be transmitted to the serving base station according to the same first configuration information set by the serving base station; And generating a second periodic sounding reference signal and a second aperiodic sounding reference signal to be transmitted to the neighboring base station according to the same second configuration information set by the serving base station.
  • the method may further include: generating a first periodic sounding reference signal and a first aperiodic sounding reference signal to be transmitted to the serving base station according to independent first configuration information set from the serving base station; And generating a second periodic sounding reference signal and a second aperiodic sounding reference signal to be transmitted to the neighboring base station according to the same second configuration information set by the serving base station.
  • It may include a radio resource control parameter including a cell specific parameter and a terminal specific parameter.
  • a base station according to another aspect of the present invention.
  • a memory that stores a plurality of radio resource control configuration information; And a setting unit instructing the terminal to select one piece of radio resource control configuration information from the plurality of radio resource control configuration information.
  • the plurality of radio resource control configuration information includes
  • the plurality of radio resource control configuration information includes
  • the first terminal specific parameter and the second terminal specific parameter may be included.
  • the first sounding reference signal includes a first periodic sounding reference signal and a first aperiodic sounding reference signal
  • the second sounding reference signal includes a second periodic sounding reference signal and a second aperiodic sounding reference signal
  • the first terminal specific parameter includes first-first terminal unique parameter for the first periodic sounding reference signal and first-second terminal specific parameter for the first aperiodic sounding reference signal,
  • the second terminal specific parameter includes a 2-1 terminal specific parameter for the second periodic sounding reference signal and the second-2 terminal specific parameter for the second aperiodic sounding reference signal,
  • the setting unit The setting unit,
  • the first-one terminal specific parameter and the second-one terminal specific parameter independent of each other, the first-two terminal specific parameter and the second-two terminal specific parameter independent of each other may be instructed to the terminal. .
  • the first sounding reference signal includes a first periodic sounding reference signal and a first aperiodic sounding reference signal
  • the second sounding reference signal includes a second periodic sounding reference signal and a second aperiodic sounding reference signal
  • the first terminal specific parameter includes first-first terminal unique parameter for the first periodic sounding reference signal and first-second terminal specific parameter for the first aperiodic sounding reference signal,
  • the second terminal specific parameter includes a 2-1 terminal specific parameter for the second periodic sounding reference signal and the second-2 terminal specific parameter for the second aperiodic sounding reference signal,
  • the setting unit The setting unit,
  • the first-one terminal unique parameter and the second-one terminal unique parameter that are identical to each other, the first-two terminal unique parameter and the second-two terminal unique parameter independent of each other may be instructed to the terminal.
  • the first sounding reference signal includes a first periodic sounding reference signal and a first aperiodic sounding reference signal
  • the second sounding reference signal includes a second periodic sounding reference signal and a second aperiodic sounding reference signal
  • the first terminal specific parameter includes first-first terminal unique parameter for the first periodic sounding reference signal and first-second terminal specific parameter for the first aperiodic sounding reference signal,
  • the second terminal specific parameter includes a 2-1 terminal specific parameter for the second periodic sounding reference signal and the second-2 terminal specific parameter for the second aperiodic sounding reference signal,
  • the setting unit The setting unit,
  • the first-one terminal unique parameter and the second-one terminal unique parameter which are independent of each other, and the same one-to-one terminal-specific parameter and the second-2 terminal unique parameter may be instructed to the terminal.
  • the first sounding reference signal includes a first periodic sounding reference signal and a first aperiodic sounding reference signal
  • the second sounding reference signal includes a second periodic sounding reference signal and a second aperiodic sounding reference signal
  • the setting unit The setting unit,
  • a second terminal specific parameter identical to the first terminal specific parameter already set in the terminal is further set in the terminal
  • the plurality of radio resource control configuration information includes
  • the first terminal specific parameter and the second periodic sounding reference signal and the second aperiodic sounding including terminal specific parameters for each of the first periodic sounding reference signal and the first aperiodic sounding reference signal.
  • a second terminal specific parameter including a terminal specific parameter for each reference signal may be included.
  • the terminal may be instructed using a semi-static configuration method.
  • the terminal may be instructed by dynamic signaling through a physical downlink control channel.
  • the terminal may be instructed by using bit information added to downlink control information.
  • the terminal may be instructed using the residual code point of the field included in the downlink control information.
  • a terminal receiving a downlink control channel through an arbitrary base station may set uplink to support transmission to another base station having better uplink channel quality and geometry. This overcomes the coverage for the uplink channel, that is, the PUCCH channel and the PUSCH channel.
  • the uplink channel and the signal transmitted to different base stations can be distinguished.
  • the transmission of the periodic or aperiodic sounding reference signal enables the measurement of the uplink channel state with other base stations other than the serving base station.
  • uplink and downlink transmission / reception targets are the same from the perspective of the terminal, that is, the terminal performs transmission and reception operations on uplink and downlink data and a control channel with one base station, and If the transmission and reception targets are different from each other, that is, the targets for the data and control channels of the uplink and the downlink may be different from each other and may be operated under coordination of the base station.
  • the sounding reference signal may be configured to generate a sequence independent of the PUCCH and the PUSCH and may give flexibility to scheduling of the base station.
  • the quality measurement for the downlink of the serving base station and the neighbor base station can be independently performed.
  • FIG. 1 is a block diagram of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a block diagram of a communication system according to another embodiment of the present invention.
  • FIG. 3 is a block diagram of a communication system according to another embodiment of the present invention.
  • FIG. 4 is a configuration diagram of a communication system according to another embodiment of the present invention.
  • FIG. 5 is a configuration diagram of a communication system according to another embodiment of the present invention.
  • FIG. 6 is a configuration diagram of a communication system according to another embodiment of the present invention.
  • FIG. 7 shows a cloud-based base station structure to which an embodiment of the present invention is applied.
  • FIG. 8 is a block diagram showing a schematic configuration of a serving base station according to an embodiment of the present invention.
  • FIG. 9 is a block diagram showing a schematic configuration of a first terminal according to an embodiment of the present invention.
  • FIG. 10 is a flowchart illustrating a sounding reference signal generation method according to an embodiment of the present invention.
  • FIG. 11 is a flowchart illustrating a sounding reference signal generation method according to another embodiment of the present invention.
  • FIG. 12 is a flowchart illustrating a sounding reference signal generation method according to another embodiment of the present invention.
  • FIG. 13 is a flowchart illustrating an uplink transmission method according to an embodiment of the present invention.
  • FIG. 14 is a flowchart illustrating an uplink transmission method according to another embodiment of the present invention.
  • 15 is a flowchart illustrating an uplink transmission method according to another embodiment of the present invention.
  • 16 is a flowchart illustrating an uplink transmission method according to another embodiment of the present invention.
  • 17 is a flowchart illustrating an uplink transmission method according to another embodiment of the present invention.
  • ... unit ... unit
  • module etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. have.
  • a terminal is a mobile station (MS), a mobile terminal (MT), a subscriber station (SS), a portable subscriber station (PSS), a user equipment (User Equipment). It may also refer to a user equipment (UE), an access terminal (AT), and the like, and may include all or some functions of a terminal, a mobile terminal, a subscriber station, a portable subscriber station, a user device, an access terminal, and the like.
  • a base station includes an access point (AP), a radio access station (RAS), a node B (Node B), an advanced node B (evolved NodeB, eNodeB), transmission and reception It may also refer to a base transceiver station (BTS), a mobile multihop relay (MMR) -BS, and the like, and may perform all or part of functions of an access point, a wireless access station, a node B, an eNodeB, a transmission / reception base station, an MMR-BS, and the like. It may also include.
  • AP access point
  • RAS radio access station
  • Node B node B
  • eNodeB advanced node B
  • MMR mobile multihop relay
  • FIG. 1 is a configuration diagram of a communication system according to an embodiment of the present invention
  • FIG. 2 is a configuration diagram of a communication system according to another embodiment of the present invention
  • FIG. 3 is a communication system according to another embodiment of the present invention.
  • 4 is a configuration diagram of a communication system according to another embodiment of the present invention
  • FIG. 5 is a configuration diagram of a communication system according to another embodiment of the present invention
  • FIG. 7 is a block diagram of a communication system according to another embodiment, and FIG. 7 illustrates a cloud-based base station structure to which an embodiment of the present invention is applied.
  • a heterogeneous network in which a first base station 100 and a second base station 200 having cell coverage of different sizes are arranged in an overlapping manner.
  • Het-Net heterogeneous network
  • the small cell 400 covers a smaller area than the macro cell 300.
  • a plurality of small cells 400 may exist in one macro cell 300. That is, in one macro cell 300, small cells 400 such as pico cells, micro cells, and femto cells are superimposed by distributed low power remote radio heads (RRHs). May appear.
  • RRHs distributed low power remote radio heads
  • a communication system to which an embodiment of the present invention is applied is a cooperative multi-point scenario (CoMP scenario, Coordinated Multi-) to increase uplink and downlink data rates of a terminal located in a cell boundary region through cooperative communication between adjacent cells.
  • Point scenario) 3 and 4 may be a cloud-based base station structure, as shown in FIG.
  • a general base station is separated into a radio signal processing unit (RU) 700 and a digital signal processing unit (DU).
  • a typical base station includes a processing unit corresponding to each of the wireless signal processing apparatus 700 and the digital signal processing apparatus 800 in one physical system, and one physical system is installed in a service area.
  • the wireless signal processing apparatus 700 and the digital signal processing apparatus 800 are physically separated, and only the wireless signal processing apparatus 700 is installed in the service target area.
  • one digital signal processing apparatus 800 has a control management function for the plurality of wireless signal processing apparatuses 700 forming respective independent cells.
  • the wireless signal processing apparatus 700 and the digital signal processing apparatus 800 may be connected by an optical cable.
  • the digital signal processing apparatus 800 is a part in charge of the digital signal processing and resource management control function of the base station, and is connected to a core system (not shown). And it is mainly installed in communication companies such as Internet data center (IDC, Internet Data Center).
  • the digital signal processing apparatus 800 may use various wireless technologies such as wideband code division multiple access (WCDMA), WiBro (WiBro, Wireless Broadband Internet), and LTE (Long Term Evolution) through a virtualization technology.
  • WCDMA wideband code division multiple access
  • WiBro WiBro
  • Wireless Broadband Internet Wireless Broadband Internet
  • LTE Long Term Evolution
  • the wireless signal processing apparatus 700 is a part that amplifies and radiates a radio wave signal of a wireless signal processing section of a base station to an antenna. That is, the wireless signal processing apparatus 700 converts and amplifies a digital signal received from the digital signal processing apparatus 800 into a radio frequency (RF) signal according to a frequency band.
  • RF radio frequency
  • the first base station 100 and the second base station 200 may be implemented with the wireless signal processing apparatus 700 of FIG. 7.
  • the first base station 100 and the second base station 200 may be referred to as eNB, RU, and Remote Radio Heads (RRH).
  • a base station control device (not shown) implemented as a digital signal processing device 800 is connected to an upper end of the first base station 100 and the second base station 200, so that the first base station 100 and the second base station ( 200).
  • the first base station 100 and the second base station 200 may be managed by a single base station control device (not shown) or may be managed by different base station control devices (not shown), respectively.
  • the first terminal 500 located in the cell boundary region is required to estimate an uplink channel with the adjacent second base station 200.
  • the first terminal 500 is defined as a terminal located in the macro cell 300 but located in an area that may be affected by the small cell 400.
  • the first terminal 500 is a neighboring base station as well as the first base station 100 currently connected, unlike the second terminal 600 located in the center of the small cell 400 transmits and receives only a signal with the second base station 200. A signal may also be transmitted and received with the second base station 200.
  • the first base station 100 is referred to as a serving base station
  • the second base station 200 is referred to as a neighbor base station based on the first terminal 500.
  • the neighboring base station 200 is a base station having good geometry and channel quality for the first terminal 500.
  • the first terminal 500 receives a downlink control channel and a data channel from the serving base station 100 (1).
  • the downlink control channel and the data channel include a physical downlink shared channel (PDSCH) and a physical downlink control channel (PDCCH).
  • the first terminal 500 transmits all uplink-related channels to the neighbor base station 200 (2).
  • the uplink-related channel may include a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), a sounding reference signal (SRS), and a related reference signal. (related RS, related reference signal).
  • the sounding reference signals are generally transmitted in sequence.
  • the reference signal sequence may use a cyclically shifted sequence.
  • the sounding reference signal is a reference signal transmitted by the first terminal 500 to the base stations 100 and 200 for uplink scheduling.
  • the base stations 100 and 200 estimate an uplink channel through the received sounding reference signal, and use the estimated uplink channel for uplink scheduling.
  • the first terminal 500 generates a sequence for the first sounding reference signal independently of the sequence used for the uplink data and the control channel, that is, the PUSCH and the PUCCH, according to the sequence information received from the serving base station 100.
  • a sequence group index and a sequence index of the first sounding reference signal are set from the sequence information received from the serving base station 100.
  • the first sounding reference signal is transmitted to the neighboring base station 200 instead of the serving base station 100 that has received the downlink control channel and the data channel to perform uplink channel estimation.
  • the sequence information may include a cyclic shift index and an OCC index for generating a sounding reference signal.
  • the first terminal 500 may have different transmission and reception targets of uplink and downlink. That is, a terminal receiving a downlink control channel through its serving base station 100 may support transmission to a neighboring base station 200 having better uplink channel quality and geometry.
  • the first terminal 500 can distinguish the uplink channel (eg, PUSCH, PUCCH, SRS-related RS) transmitted to the serving base station 100 from the uplink channel transmitted to the neighboring base station 200.
  • the division of uplink channels may be a division for the same channel type, that is, a division between SRSs, PUSCHs, PUCCHs, and related RSs. It may be a division between PUSCHs, between PUCCH and PUSCHs, and between PUCCH and SRSs.
  • SRS sounding reference signals
  • the first terminal 500 receives a downlink control channel and a data channel, that is, a PDCCH and a PDSCH from the serving base station 100 (1).
  • the first terminal 500 transmits an A / N (ACK / NACK) signal or channel quality information (CQI) and an uplink data channel as a response signal for downlink transmission among uplink-related channels.
  • the PUSCH and the sounding reference signal are transmitted to the serving base station 100 and the neighboring base station 200, respectively (3, 4).
  • the first terminal 500 generates a sequence for the first sounding reference signal independently of the sequence used for the uplink data and the control channel, that is, the PUSCH and the PUCCH, according to the sequence information received from the serving base station 100. . That is, the sequence group index and the sequence index of the first sounding reference signal are set from the sequence information received from the serving base station 100.
  • the first terminal 500 generates a sequence for the second sounding reference signal using the sequence used for the PUSCH and the PUCCH. That is, the sequence of the second sounding reference signal from the sequence group index (u) of the PUCCH and the sequence index (v) defined in sequence hopping used for the sequence index of the PUSCH.
  • the group index and the sequence index are derived and set.
  • the first terminal 500 generates a first sounding reference signal and a second sounding reference signal according to independent sequence information. That is, in the case of the first sounding reference signal, a sequence in which the sounding reference signal is independent of the PUCCH and the PUSCH may be generated since the first sounding reference signal is not generated from the PUCCH sequence group index or the PUSCH sequence index based on the cell ID. In the case of the second sounding reference signal, the second sounding reference signal is derived from the sequence group index and the sequence index based on the cell ID. This enables transmission to the serving base station 100 and independent transmission of sounding reference signals to other base stations 200.
  • the first terminal 500 transmits the first sounding reference signal to the adjacent base station 200 (3).
  • the second sounding reference signal is transmitted to the serving base station 100 (4).
  • the adjacent base station 200 estimates an uplink channel using the first sounding reference signal to perform uplink scheduling.
  • the serving base station 10 estimates an uplink channel using a second sounding reference signal to perform uplink scheduling.
  • the first sounding reference signal and the second sounding reference signal generated according to the independent sequence information are independently generated by different configuration parameters. That is, the second sounding reference signal Conf.0 transmitted to the serving base station 100 and the first sounding reference signal Conf.1 transmitted to the neighboring base station 200 are independent of each other (Conf.0, Conf.1).
  • the first sounding reference signal Conf.1 and the second sounding reference signal Conf.0 each include a periodic sounding reference signal and an aperiodic sounding reference signal, but the periodic sounding reference
  • the sequence information that is, the sequence group index and the sequence index of each of the signal and the aperiodic sounding reference signal are set identically. That is, only the sequence group index and the sequence index of PUCCH and PUSCH are set independently.
  • the uplink channel quality measurement and the channel reciprocity of the serving base station 100 and the other base station 200 are used.
  • quality measurement for downlinks of the serving base station 100 and the other base station 200 may be independently performed.
  • an embodiment in which transmission to the serving base station 100 and transmission to the neighbor base station 200 can be independently enabled for the transmission of the periodic reference signal and the aperiodic reference signal. That is, the sequence group index and the sequence index of the periodic sounding reference signal and the aperiodic sounding reference signal are independently set.
  • the cell specific parameter for the sounding reference signal is cell common and is configured through 'SoundingRS-UL-Config' in 36.331 v.10.5.0 specification section 6.3.2.
  • UE specific parameters for the periodic reference signal and the aperiodic sounding reference signal are also set as UE dedicated parameters through 'SoundingRS-UL-Config'.
  • a legacy terminal meaning a terminal according to a conventional technology
  • the first terminal 500 may select one Rl configuration parameter among a plurality of Rc configuration parameters according to the setting of the serving base station 100.
  • the serving base station 100 is cell common or UE specific so that it can be applied only to a specific cell common or a specific terminal independent of the setting of a cell specific parameter configured to operate in a legacy terminal. Additional settings are made to configure cell common parameters.
  • the UE specific parameters for the sounding reference signal may be configured to be configured independently.
  • the serving base station 100 has a plurality of RLC configuration parameters while providing flexibility for scheduling while adjacent to a transmission point, that is, the serving base station 100. It is set to enable different scheduling (scheduling) for the transmission to the base station 200.
  • the first terminal 500 receives a downlink control channel and a data channel, that is, a PDCCH and a PDSCH from the serving base station 100 (1).
  • the first terminal 500 transmits an A / N (ACK / NACK) signal or channel quality information (CQI) and an uplink data channel as a response signal for downlink transmission among uplink-related channels.
  • PUSCH and SRS are transmitted to the serving base station 100 and the neighboring base station 200, respectively (5, 6).
  • the first terminal 500 generates a sequence for the first sounding reference signal independently of the sequence used for the uplink data and the control channel, that is, the PUSCH and the PUCCH, according to the sequence information received from the serving base station 100. .
  • the first terminal 500 generates a sequence for the second sounding reference signal using the sequence used for the PUSCH and the PUCCH. That is, the sequence of the second sounding reference signal from the sequence group index (u) of the PUCCH and the sequence index (v) defined in sequence hopping used for the sequence index of the PUSCH.
  • the group index and the sequence index are derived and set.
  • the first terminal 500 generates a first sounding reference signal and a second sounding reference signal according to independent sequence information.
  • the first terminal 500 transmits the first sounding reference signal to the neighbor base station 200.
  • the second sounding reference signal is transmitted to the serving base station 100.
  • the adjacent base station 200 estimates an uplink channel using the first sounding reference signal to perform uplink scheduling.
  • the serving base station 10 estimates an uplink channel using a second sounding reference signal to perform uplink scheduling.
  • the first sounding reference signal includes a first periodic sounding reference signal and a first aperiodic sounding reference signal.
  • the second sounding reference signal includes a second periodic sounding reference signal and a second aperiodic sounding reference signal.
  • the serving base station 100 additionally sets a configuration of a cell specific parameter related to the sounding reference signal independently of the legacy configuration. Further, the UE specific parameter configuration for the periodic sounding RS and the UE specific parameter configuration for the non-periodic sounding RS are independently set separately from the legacy configuration.
  • the serving base station 100 may independently indicate all configurations of the sounding reference signal, and transmit the periodic sounding reference signal and the aperiodic sounding reference signal to the serving base station 100 and the neighbor base station 200.
  • the flexibility of all configurations can be additionally enabled.
  • the UE behavior of the existing legacy UE is not changed for simultaneous transmission between the periodic sounding reference signal and the non-periodic sounding reference signal and other uplink data channels and control channels.
  • the first sounding reference signal includes a first periodic sounding reference signal Conf.1 and a first aperiodic sounding reference signal Conf.3.
  • the second sounding reference signal includes a second periodic sounding reference signal Conf.0 and a second aperiodic SRS Conf.2. That is, the first periodic sounding reference signal Conf.1 and the first aperiodic sounding reference signal Conf.3, the second periodic sounding reference signal Conf.0, and the second aperiodic sounding reference signal Conf.2) have independent configurations (Conf.0, Conf.1, Conf.2, Conf.3).
  • the first periodic sounding reference signal Conf.1 and the first aperiodic sounding reference signal Conf.3 are transmitted to the adjacent base station 200 (5).
  • the second periodic sounding reference signal Conf.0 and the second aperiodic sounding reference signal Conf.2 are transmitted to the serving base station 100 (6).
  • the first terminal 500 receives a downlink control channel and a data channel, that is, a PDCCH and a PDSCH from the serving base station 100 (1).
  • the first terminal 500 transmits an A / N (ACK / NACK) signal or channel quality information (CQI) and an uplink data channel as a response signal for downlink transmission among uplink-related channels.
  • PUSCH and SRS are transmitted to the serving base station 100 and the neighboring base station 200, respectively (7, 8).
  • the serving base station 100 additionally sets a configuration of a cell specific parameter related to the sounding reference signal independently of the legacy configuration, and performs a terminal specific parameter (UE) for the aperiodic sounding reference signal.
  • the configuration of the specific parameter is independently set separately from the legacy configuration, and the configuration of the UE specific parameter for the periodic sounding reference signal is set to follow the same configuration set in the legacy. .
  • first periodic SRS Conf.0
  • second periodic SRS Conf.0
  • first aperiodic SRS Conf. 3
  • second aperiodic SRS Conf. 2
  • the first periodic SRS (Conf. 0) and the first non-periodic SRS (Conf. 3) are transmitted to the adjacent base station 200 (7).
  • the second periodic sounding reference signal Conf.0 and the second aperiodic sounding reference signal Conf.2 are transmitted to the serving base station 100 (8).
  • the UE sounding operation in the legacy legacy terminal may be set so that the periodic sounding reference signal and the aperiodic sounding reference signal are simultaneously transmitted with other uplink data channels and control channels.
  • the base station may be scheduled for transmission to the serving base station 100 and transmission to the neighbor base station 200 in the transmission of the aperiodic sounding reference signal. It can give you full flexibility.
  • the first terminal 500 receives a downlink control channel and a data channel, that is, a PDCCH and a PDSCH from the serving base station 100 (1).
  • the first terminal 500 transmits an A / N (ACK / NACK) signal or channel quality information (CQI) and an uplink data channel as a response signal for downlink transmission among uplink-related channels.
  • PUSCH and SRS are transmitted to the serving base station 100 and the neighboring base station 200, respectively (9, 8).
  • a configuration of a cell specific parameter related to the sounding reference signal may be set independently of the legacy configuration.
  • Each configuration of a UE specific parameter for a periodic reference signal and an aperiodic reference signal is set to conform to the configuration set in the legacy.
  • first periodic SRS (Conf.0) and the second periodic SRS (Conf.0) have the same configuration (Conf.0).
  • the first aperiodic SRS (Conf. 2) and the second aperiodic SRS (Conf. 2) also have the same configuration (Conf. 2).
  • the first periodic SRS (Conf. 0) and the first non-periodic SRS (Conf. 2) are transmitted to the neighbor base station 200 (9).
  • the second periodic sounding reference signal Conf.0 and the second aperiodic sounding reference signal Conf.2 are transmitted to the serving base station 100 (10).
  • the base station can indicate only the configuration set for each cell for the sounding reference signal differently so that the periodic sounding reference signal and the aperiodic sounding reference signal can be transmitted simultaneously with other uplink data channels and control channels. Set the UE behavior not to change.
  • the first terminal 500 receives a downlink control channel and a data channel, that is, a PDCCH and a PDSCH from the serving base station 100 (1).
  • the first terminal 500 transmits an A / N (ACK / NACK) signal or channel quality information (CQI) and an uplink data channel as a response signal for downlink transmission among uplink-related channels.
  • PUSCH and SRS are transmitted to the serving base station 100 and the neighboring base station 200, respectively.
  • the serving base station 100 additionally sets a configuration of a cell specific parameter related to the sounding reference signal independently of the legacy configuration.
  • the UE specific parameter configuration for the periodic sounding RS is additionally set independently of the legacy configuration.
  • the configuration of the UE specific parameter for the aperiodic sounding reference signal is set to conform to the configuration set in the legacy.
  • first periodic SRS Conf. 1
  • second periodic SRS Conf. 0
  • first aperiodic SRS Conf. 2
  • second aperiodic SRS Conf. 2
  • the first periodic SRS (Conf. 1) and the first non-periodic SRS (Conf. 2) are transmitted to the neighbor base station 200 (200).
  • the second periodic sounding reference signal Conf.0 and the second aperiodic sounding reference signal Conf.2 are transmitted to the serving base station 100 (12).
  • the UE sounding operation in the legacy legacy terminal may be set so that the periodic sounding reference signal and the aperiodic sounding reference signal are simultaneously transmitted with other uplink data channels and control channels.
  • the base station may be scheduled for transmission to the serving base station 100 and transmission to the neighbor base station 200 in the transmission of the aperiodic sounding reference signal. It can give you full flexibility.
  • FIG. 8 is a block diagram showing a schematic configuration of a serving base station according to an embodiment of the present invention.
  • the serving base station 100 includes a communication unit 101, a memory 103, and a processor 101.
  • the communication unit 101 is connected to the processor 101, and transmits and receives a radio signal.
  • the communication unit 101 may include a baseband circuit for processing a radio signal.
  • the memory 103 is connected to the processor 105 and stores various information for driving the processor 105.
  • the memory 103 may be embodied in a medium such as RAM, such as dynamic random access memory, Rambus DRAM, synchronous DRAM, static RAM, or the like.
  • the memory 103 may be inside or outside the processor 105 and may be connected to the processor 105 by various well-known means.
  • the memory 103 also stores a plurality of radio resource control configuration information.
  • the processor 105 may be implemented as a central processing unit or other chipset, microprocessor, or the like, and the layers of the air interface protocol may be implemented by the processor 105.
  • the processor 105 includes a sequence setting unit 107 and a configuration setting unit 109.
  • the sequence setting unit 107 transmits sequence information to the first terminal 500.
  • the sequence setting unit 107 may include the sequence information in RRC configuration parameters and transmit the sequence information to the first terminal 500.
  • sequence setting unit 107 may include the sequence information in the physical downlink control channel (PDCCH) and transmit it to the first terminal 500.
  • PDCCH physical downlink control channel
  • sequence setting unit 107 may include the indication information in the physical downlink control channel (PDCCH) to transmit to the first terminal 500.
  • PDCCH physical downlink control channel
  • the indication information may include a 1-bit dynamic indication message indicating a radio resource control signaling parameter for predefined sequence information through radio resource control signaling.
  • sequence setting unit 107 may set the same sequence information for each of the periodic sounding reference signal and the aperiodic sounding reference signal.
  • sequence setting unit 107 may set sequence information of each of the periodic sounding reference signal and the aperiodic sounding reference signal differently.
  • the sequence setting unit 107 sets the sequence information to the first terminal 500, thereby generating a sounding reference signal according to the independent sequence information.
  • any UE transmits a sounding reference signal for uplink channel state measurement periodically or aperiodically for uplink channel estimation with a base station of a cell to which it is connected. Is defined to
  • RRC parameters include, for example, cell specific SRS bandwidth, transmission comb of a sounding reference signal, frequency positioning allocated at intervals of two subcarrier spacings eg 0 (even subcarriers) or 1 (odd subcarriers) UE-.
  • hopping related configuration parameters include frequency domain position, periodicity, subframe configuration (specifies which sub-frame should transmit the sounding reference signal), antenna configuration (specifies the number of antennas transmitting the sounding reference signal, number of antenna ports), base sequence index (sounding reference signal sequence index for generating the corresponding sounding reference signal is determined by sequence group number u used in PUCCH and sequence number v determined by sequence hopping configuration), cyclic and a shift index (cyclic shift index as a reference used when generating a sounding reference signal).
  • the configuration setting unit 109 dynamically triggers the transmission of the aperiodic sounding reference signal through the PDCCH to the first terminal 500. Then, the first terminal 500 receives the triggering by the PDCCH and the RRC parameters to transmit the uplink aperiodic sounding reference signal.
  • the configuration setting unit 109 transmits configuration parameters of the sounding reference signal to the first terminal 500 through RRC parameters for generating the sounding reference signal.
  • the first terminal 500 is instructed to select one radio resource control configuration information from the plurality of radio resource control configuration information stored in the memory 103.
  • the radio resource control configuration information includes a cell specific parameter and a UE specific parameter.
  • the configuration setting unit 109 additionally sets the second cell unique parameter to the first terminal 500 that is independent of the first cell specific parameter already set in the first terminal 500 and is applicable only to the first terminal 500. do.
  • the first cell specific parameter is a parameter related to the first sounding reference signal
  • the second cell unique parameter is a parameter related to the second sounding reference signal
  • the configuration setting unit 109 additionally sets, in the first terminal 500, a second terminal unique parameter independent of the first terminal unique parameter already set in the first terminal 500.
  • the first terminal 500 generates a first sounding reference signal and a second sounding reference signal having different configurations, and transmits the first terminal 500 to the serving base station 100 and the neighboring base station 200, respectively.
  • Embodiments may be implemented.
  • the first sounding reference signal includes a first periodic sounding reference signal and a first aperiodic sounding reference signal
  • the second sounding reference signal includes a second periodic sounding reference signal and a second aperiodic sound. Ding reference signal.
  • the first terminal specific parameter includes a 1-1 terminal specific parameter for the first periodic sounding reference signal and a 1-2 terminal specific parameter for the first aperiodic sounding reference signal.
  • the second terminal specific parameter includes a 2-1 terminal specific parameter for the second periodic sounding reference signal and the second-2 terminal specific parameter for the second aperiodic sounding reference signal.
  • the configuration setting unit 109 may include the first-first terminal unique parameters and the second-first terminal unique parameters independent of each other, the first-two terminal unique parameters and the second-two terminal unique parameters independent of each other Instructs the terminal 500.
  • the configuration setting unit 109 may trigger the 2-1 terminal specific parameter and the 2-2 terminal specific parameter through the PDCCH.
  • the first periodic sounding reference signal, the first aperiodic sounding reference signal, the second periodic sounding reference signal, and the second aperiodic sounding reference signal are generated differently from each other, and thus serving base stations.
  • An embodiment in which the first terminal 500 transmits to 100 and the neighbor base station 200 may be implemented.
  • the configuration setting unit 109 sets the 1-1 terminal unique parameters and the 2-1 terminal unique parameters related to the periodic sounding reference signal equally, and the 1-2 terminal related to the aperiodic sounding reference signal.
  • the unique parameter and the 2-2 terminal unique parameter are set independently of each other and instruct the first terminal 500.
  • a configuration of the first periodic sounding reference signal and the second periodic sounding reference signal are identical to each other, and the first aperiodic sounding reference signal and the second aperiodic sounding reference signal are independent of each other.
  • the configuration setting unit 109 may include the first-first terminal unique parameters and the second-first terminal unique parameters independent of each other, the same first-second terminal unique parameters and the second-second terminal unique parameters, and the first terminal. Instruct 500.
  • the configuration setting unit 109 sets the first-first terminal unique parameter and the second-first terminal unique parameter related to the periodic sounding reference signal to each other and the first to second terminal associated with the aperiodic sounding reference signal.
  • the terminal specific parameter and the 2-2 terminal specific parameter are set equal to each other to instruct the first terminal 500.
  • the first periodic sounding reference signal and the second periodic sounding reference signal are generated to have the same configuration, and the first aperiodic sounding reference signal and the second aperiodic sounding reference signal are equal to each other.
  • An embodiment of generating and transmitting the first terminal 500 to the serving base station 100 and the adjacent base station 200 may be implemented.
  • the configuration setting unit 109 may include the first-first terminal unique parameters and the second-first terminal unique parameters independent of each other, the same first-second terminal-specific parameters and second-second terminal unique parameters as the first terminal. Instruct 500.
  • a configuration of the first periodic sounding reference signal and the second aperiodic sounding reference signal is independently generated, and the first aperiodic sounding reference signal and the second aperiodic sounding reference signal are generated.
  • An embodiment in which the first terminal 500 transmits to the serving base station 100 and the adjacent base station 200 may be implemented in the same configuration.
  • the configuration setting unit 109 is configured to the first terminal 500 when the configuration of the cell specific parameter related to the sounding reference signal is configured independently of the legacy configuration.
  • the following two embodiments may be used.
  • the configuration setting unit 109 may semi-statically specify one of multiple configurations as an RRC parameter.
  • the configuration setting unit 109 separately instructs the first terminal 500 through the PDCCH as dynamic signaling.
  • the configuration setting unit 109 is a UE specific parameter (UE specific) configured independently of the configuration of the UE specific parameter configured to operate like a legacy terminal for the periodic sounding reference signal and the non-periodic reference signal, respectively
  • UE specific UE specific parameter
  • the following embodiment may be used as an indication method for configuration of a parameter).
  • the configuration setting unit 109 may semi-statically designate one of multiple configurations as an RRC parameter.
  • the configuration setting unit 109 separately instructs the first terminal 500 through the PDCCH as dynamic signaling.
  • an additional bit is added to each DCI format to indicate configuration.
  • the residual code of the field included in the DCI format does not appear to change the size of the DCI format to reduce the complexity of blind detection of the DCI format. Use remaining code-points.
  • FIG. 9 is a block diagram showing a schematic configuration of a first terminal according to an embodiment of the present invention.
  • the first terminal 500 includes a communication unit 501, a memory 501, and a processor 505.
  • the communication unit 501 is connected to the processor 505 to transmit and receive a radio signal.
  • the communication unit 501 may include a baseband circuit for processing a radio signal.
  • the memory 501 is connected to the processor 505 and stores various information for driving the processor 505.
  • the memory 503 may be embodied in a medium such as RAM, such as dynamic random access memory, Rambus DRAM, synchronous DRAM, static RAM, or the like.
  • the memory 503 may be inside or outside the processor 505 and may be connected to the processor 505 by various well-known means.
  • the processor 505 may be implemented as a central processing unit or other chipset, microprocessor, or the like, and the layers of the air interface protocol may be implemented by the processor 505.
  • the processor 505 includes a sequence controller 507, a configuration controller 509, and a generator 511.
  • the sequence controller 507 sets a sounding reference signal sequence independent of the sequence of the uplink channel according to the sequence information received from the serving base station 100.
  • the sequence controller 507 detects a corresponding uplink grant during blind decoding of a downlink control channel, that is, a PDCCH, according to the configuration of a sounding reference signal. can do. That is, when the PDCCH includes an indication of a related sequence index and indicates a predefined RRC parameter through a 1-bit dynamic indication through RRC.
  • the sequence controller 507 may perform the first terminal in a UE dedicated search space instead of a UE common search space at the time of blind detection for the PDCCH.
  • the behavior of the UE is defined to find DCI format 0 and DCI format 4, which are uplink grants (UL grants) including uplink scheduling information for 500.
  • the sequence controller 507 may perform blind detection on the PDCCH.
  • the behavior of the terminal is defined to find.
  • the first terminal 50 After the Rel-11, the first terminal 50 always searches for grants including downlink and uplink scheduling information in a UE dedicated search space when performing a related operation. Is set.
  • the indication message may be accompanied by a dynamic indication message through PDCCH of the source eNodeB, or control data or RRC signaling of the MAC layer.
  • the first terminal 500 does not receive a response message and does not transmit data.
  • the sequence controller 507 may generate a first sounding reference signal including the first periodic sounding reference signal and the first aperiodic sounding reference signal generated according to the same sequence information. That is, sequence information for the first sounding reference signal independent of the sequence of the uplink channel is the same for the periodic sounding reference signal and the aperiodic sounding reference signal.
  • sequence controller 507 may generate a first sounding reference signal including a first periodic sounding reference signal and a first aperiodic sounding reference signal generated according to sequence information independent of each other. That is, sequence information for the first sounding reference signal independent of the sequence of the uplink channel is different from the periodic sounding reference signal and the aperiodic sounding reference signal.
  • the configuration controller 509 may refer to a periodic sounding reference signal and an aperiodic sounding reference based on an RC parameter, that is, a cell-specific parameter and a UE-specific parameter, independent of the legacy configuration according to the configuration instruction received by the serving base station 100. Set the signal configuration.
  • the generation unit 511 generates a first sounding reference signal and a second sounding reference signal according to independent sequence information according to each embodiment described with reference to FIGS. 1 to 6.
  • the first periodic sounding reference signal, the first non-periodic sounding reference signal, the second periodic sounding reference signal, and the second non-periodic sounding reference signal may be generated.
  • the first sounding reference signal and the second sounding reference signal generated as described above are transmitted according to UE-specific parameters in an uplink subframe / bandwidth region where cell specific parameters are satisfied. .
  • FIG. 10 is a flowchart illustrating a sounding reference signal generation method according to an embodiment of the present invention.
  • the sequence controller 507 of the first terminal 500 confirms sequence information included in the RC configuration information received from the serving base station 100 (S101) (S103).
  • the generation unit 511 independently of the sequence used for the uplink channel, that is, the uplink control channel (PUCCH) and the uplink shared channel (PUSCH), by using the sequence information received by the sequence controller 507 in step S103.
  • the first sounding reference signal sequence is generated according to the set sequence information (S105).
  • FIG. 11 is a flowchart illustrating a sounding reference signal generation method according to another embodiment of the present invention.
  • the sequence controller 507 of the first terminal 500 checks sequence information included in a physical downlink control channel (PDCCH) received from the serving base station 100 (S201) (S203).
  • PDCCH physical downlink control channel
  • the generation unit 511 independently of the sequence used for the uplink channel, that is, the uplink control channel (PUCCH) and the uplink shared channel (PUSCH), by using the sequence information received by the sequence controller 507 in step S103.
  • the first sounding reference signal sequence is generated according to the set sequence information (S205).
  • FIG. 12 is a flowchart illustrating a sounding reference signal generation method according to another embodiment of the present invention.
  • the sequence controller 507 of the first terminal 500 receives a physical downlink control channel (PDCCH) from the serving base station 100 (S301).
  • PDCH physical downlink control channel
  • sequence control unit 507 of the first terminal 500 performs blind decoding on the physical downlink control channel in the terminal-only search space (S303).
  • the sequence controller 507 of the first terminal 500 checks the indication information by searching for an uplink grant or a downlink grant (S305) (S305).
  • the sequence controller 507 of the first terminal 500 sets sequence information according to the indication information confirmed in step S305 (S307).
  • the generation unit 511 generates a first sounding reference signal sequence independently of a sequence used for the uplink control channel (PUCCH) and the uplink shared channel (PUSCH) using the sequence information set in step S307 ( S309).
  • FIG. 13 is a flowchart illustrating an uplink transmission method according to an embodiment of the present invention.
  • the first terminal 500 receives sequence information from the serving base station 100 (S401).
  • the first terminal 500 generates a first sounding reference signal independently of the sequence used for the uplink channel using the sequence information received in step S401 (S403). And it transmits to the adjacent base station 200 (S405).
  • the adjacent base station 200 estimates an uplink channel with the first terminal 500 based on the first sounding reference signal (S407).
  • the first terminal 500 generates a second sounding reference signal using the sequence used for the uplink channel (S409). And it transmits to the serving base station 100 (S411).
  • the serving base station 100 estimates an uplink channel with the first terminal 500 based on the first sounding reference signal (S413).
  • FIG. 14 is a flowchart illustrating an uplink transmission method according to another embodiment of the present invention, and corresponds to the embodiments of FIGS. 2 and 5 described above.
  • the first terminal 500 receives sequence information from the serving base station 100 (S501). Then, the configuration information selection instruction is received (S503). That is, an instruction to select one Rc configuration parameter from among the plurality of Rc configuration parameters is received.
  • the configuration information selection instruction in step S503 includes an instruction to additionally set the first cell-specific parameters independent of the legacy configuration.
  • the first terminal 500 is independent of the sequence used for the uplink channel using the sequence information received in step S501, and the first sounding according to the first cell specific parameter selected according to the instruction received in step S503.
  • a reference signal is generated (S505).
  • the first terminal 500 receives the first periodic sounding reference signal according to the first cell-specific parameter selected according to the instruction received in step S503 and the first-first terminal unique parameter according to the legacy configuration, and the step S503.
  • the first aperiodic sounding reference signal based on the selected first cell specific parameter and the 1-2 terminal specific parameter according to the legacy configuration may be generated according to the instruction.
  • the generated first sounding reference signal is transmitted to the neighboring base station 200 (S507).
  • the adjacent base station 200 estimates an uplink channel with the first terminal 500 based on the first sounding reference signal (S509).
  • the first terminal 500 uses the sequence used for the uplink channel and generates a second sounding reference signal according to the second cell specific parameter of the legacy configuration (S511).
  • the first terminal 500 may include a first cell specific parameter selected according to the second cell specific parameter of the legacy configuration and a second periodic sounding reference signal according to the 2-1 terminal specific parameter of the legacy configuration, in step S503.
  • a second aperiodic sounding reference signal based on the selected second cell specific parameter and the second-2 terminal unique parameter according to the legacy configuration may be generated.
  • the generated second sounding reference signal is transmitted to the serving base station 100 (S513).
  • the serving base station 100 estimates an uplink channel with the first terminal 500 based on the second sounding reference signal (S515).
  • the first-first terminal unique parameter and the second-first terminal unique parameter related to the aforementioned periodic sounding reference signal are the same, and the second-first terminal specific parameter and the second-related to the aperiodic sounding reference signal are the same.
  • the two terminal unique parameters are the same.
  • 15 is a flowchart illustrating an uplink transmission method according to another embodiment of the present invention, and corresponds to the embodiment of FIG. 3 described above.
  • the first terminal 500 receives sequence information from the serving base station 100 (S601).
  • the configuration information selection instruction is received (S603).
  • the configuration information selection instruction includes an instruction for additionally setting the first cell specific parameter, the first-first terminal unique parameter, and the second-second terminal unique parameter independently of the legacy configuration.
  • the first terminal 500 is independent of the sequence used for the uplink channel using the sequence information received in step S601, and the first cell specific parameter and the first-first terminal selected according to the instructions received in step S603.
  • a first periodic sounding reference signal according to the unique parameter is generated (S605).
  • the first terminal 500 is independent of the sequence used for the uplink channel using the sequence information received in step S601, and the first cell specific parameter and the 1-2 terminal selected according to the instruction received in step S603.
  • a first aperiodic sounding reference signal according to the unique parameter is generated (S607).
  • the first terminal 500 transmits the first periodic sounding reference signal and the first aperiodic sounding reference signal to the neighbor base station 200 (S609). Then, the adjacent base station 200 estimates the uplink channel with the first terminal 500 based on the one periodic sounding reference signal and the first aperiodic sounding reference signal (S611).
  • the first terminal 500 uses the sequence used for the uplink channel and generates a second periodic sounding reference signal according to the second cell specific parameter and the 2-1 terminal specific parameter according to the legacy configuration ( S613).
  • the first terminal 500 uses the sequence used for the uplink channel and generates a second cell-specific parameter according to the legacy configuration and a second aperiodic sounding reference signal according to the 2-2 terminal-specific parameter ( S615).
  • the first terminal 500 transmits the second periodic sounding reference signal and the second aperiodic sounding reference signal to the serving base station 100 (S617). Then, the serving base station 100 estimates an uplink channel with the first terminal 500 based on the second periodic sounding reference signal and the second aperiodic sounding reference signal (S619).
  • 16 is a flowchart illustrating an uplink transmission method according to another embodiment of the present invention and corresponds to the embodiment of FIG. 4 described above.
  • the first terminal 500 receives sequence information from the serving base station 100 (S701). Then, the configuration information selection instruction is received (S703).
  • the configuration information selection instruction includes an instruction for additionally setting the first cell specific parameter and the 1-2 terminal specific parameter independent of the legacy configuration.
  • the first terminal 500 is independent of the sequence used for the uplink channel using the sequence information received in step S601, and the first cell specific parameter and the 1-2 terminal unique according to the instruction received in step S703.
  • a first aperiodic sounding reference signal is generated according to the parameter (S705).
  • the first terminal 500 is independent of the sequence used for the uplink channel by using the sequence information received in step S701, and selected according to the first cell specific parameter and legacy configuration according to the instruction received in step S703.
  • the first periodic sounding reference signal is generated according to the UE-specific parameters.
  • the first terminal 500 transmits the first periodic sounding reference signal and the first aperiodic sounding reference signal to the neighbor base station 200 (S709). Then, the neighbor base station 200 estimates the uplink channel with the first terminal 500 based on the one periodic sounding reference signal and the first aperiodic sounding reference signal (S711).
  • the first terminal 500 uses the sequence used for the uplink channel and generates a second periodic sounding reference signal according to the second cell specific parameter and the 2-1 terminal specific parameter according to the legacy configuration ( S713).
  • the first terminal 500 uses the sequence used for the uplink channel and generates a second cell-specific parameter according to the legacy configuration and a second aperiodic sounding reference signal according to the 2-2 terminal-specific parameter ( S715).
  • the first terminal 500 transmits the second periodic sounding reference signal and the second aperiodic sounding reference signal to the serving base station 100 (S717). Then, the serving base station 100 estimates an uplink channel with the first terminal 500 based on the second periodic sounding reference signal and the second aperiodic sounding reference signal (S719).
  • 17 is a flowchart illustrating an uplink transmission method according to another embodiment of the present invention and corresponds to the embodiment of FIG. 6 described above.
  • the first terminal 500 receives sequence information from the serving base station 100 (S801). Then, the configuration information selection instruction is received (S803).
  • the configuration information selection instruction includes an instruction for additionally setting the first cell specific parameter and the 1-1 terminal specific parameter independent of the legacy configuration.
  • the first terminal 500 is independent of the sequence used for the uplink channel using the sequence information received in step S801, and the first cell specific parameter and the first-first terminal unique according to the instruction received in step S803.
  • a first periodic sounding reference signal according to the parameter is generated (S805).
  • the first terminal 500 is independent of the sequence used for the uplink channel by using the sequence information received in step S801, and selected according to the first cell-specific parameters and the legacy configuration according to the instruction received in step S803 1-2, a first aperiodic sounding reference signal is generated according to UE specific parameters (S807).
  • the first terminal 500 transmits the first periodic sounding reference signal and the first aperiodic sounding reference signal to the neighbor base station 200 (S809). Then, the neighbor base station 200 estimates the uplink channel with the first terminal 500 based on the one periodic sounding reference signal and the first aperiodic sounding reference signal (S811).
  • the first terminal 500 uses the sequence used for the uplink channel and generates a second periodic sounding reference signal according to the second cell specific parameter and the 2-1 terminal specific parameter according to the legacy configuration ( S813).
  • the first terminal 500 uses the sequence used for the uplink channel and generates a second cell-specific parameter according to the legacy configuration and a second aperiodic sounding reference signal according to the 2-2 terminal-specific parameter ( S815).
  • the first terminal 500 transmits the second periodic sounding reference signal and the second aperiodic sounding reference signal to the serving base station 100 (S817). Then, the serving base station 100 estimates an uplink channel with the first terminal 500 based on the second periodic sounding reference signal and the second aperiodic sounding reference signal (S819).
  • the embodiments of the present invention described above are not only implemented through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiments of the present invention or a recording medium on which the program is recorded.

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Abstract

L'invention concerne un procédé de génération d'un signal de référence de sondage, un procédé d'émission d'un signal de liaison montante et une station de base. Dans la présente invention, le procédé de génération d'un signal de référence de sondage est un procédé pour générer un signal de référence de sondage dans un terminal, qui comprend les étapes consistant à : recevoir des informations de séquence à partir d'une station de base de desserte et générer une séquence et un premier signal de référence de sondage indépendant utilisé pour des données de liaison montante et un canal de commande à l'aide des informations de séquence.
PCT/KR2012/009522 2012-09-25 2012-11-12 Procédé de génération d'un signal de référence de sondage, procédé d'émission d'un signal de liaison montante et station de base WO2014051198A1 (fr)

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KR1020120106695A KR101571881B1 (ko) 2012-09-25 2012-09-25 사운딩 참조 신호 생성 방법, 상향링크 전송 방법 및 기지국
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113475101A (zh) * 2019-02-22 2021-10-01 上海诺基亚贝尔股份有限公司 空闲或非活动终端设备的上行链路定位
WO2022161287A1 (fr) * 2021-01-29 2022-08-04 华为技术有限公司 Procédé et appareil de transmission de symbole pilote

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102415470B1 (ko) * 2017-09-29 2022-07-01 삼성전자 주식회사 무선 통신 시스템에서 기준신호를 전송하기 위한 장치 및 방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090181687A1 (en) * 2008-01-08 2009-07-16 Nokia Siemens Networks Oy Sounding reference signal arrangement
US20110269489A1 (en) * 2010-04-30 2011-11-03 Sharp Laboratories Of America, Inc. Assigning and coordinating uplink reference signals for cooperative communication
EP2421178A2 (fr) * 2009-12-07 2012-02-22 LG Electronics Inc. Procédé de transmission d'un signal de référence de sondage dans un système de communication comp en liaison montante, et appareil correspondant
US8150327B2 (en) * 2007-03-19 2012-04-03 Apple Inc. Channel sounding techniques for a wireless communication system
US20120201149A1 (en) * 2011-02-07 2012-08-09 Telefonaktiebolaget L M Ericsson (Publ) Mitigation of Interfering Sounding Reference Signals in Radiocommunication Systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8150327B2 (en) * 2007-03-19 2012-04-03 Apple Inc. Channel sounding techniques for a wireless communication system
US20090181687A1 (en) * 2008-01-08 2009-07-16 Nokia Siemens Networks Oy Sounding reference signal arrangement
EP2421178A2 (fr) * 2009-12-07 2012-02-22 LG Electronics Inc. Procédé de transmission d'un signal de référence de sondage dans un système de communication comp en liaison montante, et appareil correspondant
US20110269489A1 (en) * 2010-04-30 2011-11-03 Sharp Laboratories Of America, Inc. Assigning and coordinating uplink reference signals for cooperative communication
US20120201149A1 (en) * 2011-02-07 2012-08-09 Telefonaktiebolaget L M Ericsson (Publ) Mitigation of Interfering Sounding Reference Signals in Radiocommunication Systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113475101A (zh) * 2019-02-22 2021-10-01 上海诺基亚贝尔股份有限公司 空闲或非活动终端设备的上行链路定位
CN113475101B (zh) * 2019-02-22 2023-10-03 上海诺基亚贝尔股份有限公司 空闲或非活动终端设备的上行链路定位
WO2022161287A1 (fr) * 2021-01-29 2022-08-04 华为技术有限公司 Procédé et appareil de transmission de symbole pilote

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