WO2017082232A1 - 基地局、ユーザ装置、参照信号送信方法及び信号受信方法 - Google Patents
基地局、ユーザ装置、参照信号送信方法及び信号受信方法 Download PDFInfo
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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
- H04L5/0048—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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Definitions
- the present invention relates to a base station, a user apparatus, a reference signal transmission method, and a signal reception method.
- a plurality of reference signals used by a user equipment (UE: User Equation) to perform downlink channel estimation, reception quality measurement, and the like are defined.
- UE User Equation
- CRS Cell Specific Reference Signal: CRS-RS (Channel State Information Reference Signal: Channel State Information Reference Signal)
- UE-RS UE Specific Reference Signal: UE specific Reference Signal
- the SS Synchronization Signal
- the base station eNB: enhancedNBNodeB
- PSS Primary Synchronization Signal
- SSS SSS
- Signal is prescribed
- TM Transmission mode
- TM9 is a transmission mode added in 3GPP Rel-10, and supports 8-layer MIMO using a maximum of 8 antenna ports.
- the user apparatus receives a PDSCH (Physical Downlink Channel: “Physical Downlink: Shared Channel”) using the UE-RS.
- a PDSCH Physical Downlink Channel: “Physical Downlink: Shared Channel”
- Non-Patent Document 2 in the transmission mode, in the subframe to which the SS is mapped (included), the user apparatus has the PDSCH RB (resource block: Resource Block) allocated to itself.
- PDSCH RB resource block: Resource Block
- all RBs of the PDSCH of the entire system band are allocated to the same user apparatus, and SS (SSS in the example of FIG. 1A) is included in some RBs of the RBs. Assume that it was.
- the user apparatus operates so as not to receive all RBs of the PDSCH of the entire system band.
- the base station performs scheduling so as to avoid the RB to which the SS is mapped in the subframe to which the SS is mapped.
- the user apparatus when the RB to which the SS is mapped is included in a part of the RB of the PDSCH allocated to the user apparatus, the user apparatus does not receive all the RBs of the PDSCH allocated to the user apparatus.
- the reason why the operation is specified will be briefly described with reference to the drawings.
- FIG. 2 on the PDSCH, a plurality of reference signals are scattered and mapped throughout the PDSCH.
- the range of A indicates an RB pair to which SS is not mapped
- the range of B indicates an RB pair to which SS is mapped.
- SS is mapped to a part of resource elements to which UE-RS is originally mapped. In other words, a part of UE-RS is missing. If a part of the UE-RS is lost, the user apparatus cannot receive the UE-RS correctly, and as a result, the RB cannot be correctly demodulated. For this reason, the above-mentioned regulations are provided.
- the disclosed technique has been made in view of the above, and an object of the present invention is to provide a technique capable of improving throughput in a wireless communication system supporting LTE.
- a base station of the disclosed technology is a base station that communicates with a user apparatus in a radio communication system supporting LTE, and includes a section represented by a predetermined subframe to which a synchronization signal is mapped in a time direction, and a frequency direction.
- a UE-specific reference signal according to a first pattern in which a UE-specific reference signal is mapped to a resource element other than a resource element to which the synchronization signal is mapped in a range surrounded by a section to which the synchronization signal is mapped. Includes a generation unit that generates a signal to be mapped, and a transmission unit that transmits the generated signal.
- a technology capable of improving throughput in a wireless communication system supporting LTE is provided.
- LTE corresponds to not only a communication method corresponding to Release 8 or 9 of 3GPP but also Release 10, 11, 12, 13, or Release 14 or later of 3GPP. It is used in a broad sense including the fifth generation communication system.
- UE-RS performs frequency multiplexing (FDM: Frequency Division Multiplex) and code division multiplexing (CDM: Code Division Multiplex) for each antenna port as shown in FIG. It is mapped to the element and transmitted from the base station eNB.
- FDM Frequency Division Multiplex
- CDM Code Division Multiplex
- FIG. 3 shows, in order from the left, the pattern of resource elements to which UE-RSs transmitted through antenna port 7, antenna port 8, antenna port 9, and antenna port 10 are mapped.
- the UE-RS is transmitted by CDM using two consecutive resource elements in the time direction. In other words, if one of the two consecutive resource elements is missing, the user apparatus UE cannot correctly receive the UE-RS.
- FIG. 3 shows “3, 4, 8, or 9” in the case of special subframes in which the TDD special subframe configuration (Special Subframe Configuration) is “1, 2, 6, or 7” in order from the top.
- TDD special subframe configuration Specific Subframe Configuration
- a special subframe that is “other (including a TDD downlink subframe and FDD)” the resource element pattern to which the UE-RS is mapped is shown.
- each pattern in which UE-RS is mapped as shown in FIG. 3 is referred to as “conventional UE-RS mapping pattern” for convenience.
- a special subframe is a special subframe provided in order to avoid interference between DL and UL when switching from DL to UL in TDD.
- the special subframe is provided at a predetermined position for each UL / DL subframe configuration.
- the special subframe further defines nine types of special subframes with different DL / GP (Guard-Period) / UL ratios.
- FIG. 6A shows a position where PSS / SSS is mapped in FDD-LTE.
- the PSS is mapped to the last OFDM symbol in slots 0 and 10.
- the SSS is mapped to the OFDM symbol adjacent to the left of the PSS.
- FIG. 6B shows a position where PSS / SSS is mapped in TDD-LTE.
- PSS is mapped to the third OFDM symbol of subframes 1 and 6.
- the SSS is mapped to the last OFDM symbol of subframes 0 and 5.
- FIG. 7 is a diagram illustrating a system configuration example of the wireless communication system according to the embodiment.
- the radio communication system according to the embodiment includes a base station eNB and a user apparatus UE.
- the radio communication system according to the embodiment includes a base station eNB and a user apparatus UE.
- one base station eNB and one user apparatus UE are illustrated, but a plurality of base stations eNB may be included, or a plurality of user apparatuses UE may be included.
- Good is a diagram illustrating a system configuration example of the wireless communication system according to the embodiment.
- the radio communication system according to the embodiment includes a base station eNB and a user apparatus UE.
- one base station eNB and one user apparatus UE are illustrated, but a plurality of base stations eNB may be included, or a plurality of user apparatuses UE may be included.
- Good is a diagram illustrating a system configuration example of the wireless communication system according to the embodiment.
- FIG. 8 is a sequence diagram illustrating a processing procedure of the wireless communication system according to the embodiment.
- the base station eNB allocates the PDSCH RB to the user apparatus UE, maps the UE-RS in the allocated RB in a predetermined pattern, and includes the DL data in the PDSCH in the allocated RB to the user apparatus UE. Send.
- the user apparatus UE recognizes the RB of the PDSCH allocated to itself by DCI (Downlink Control Information) included in the PDCCH (Physical Downlink Control Channel).
- DCI Downlink Control Information
- PDCCH Physical Downlink Control Channel
- the user apparatus UE receives the UE-RS mapped in the RB allocated to the user apparatus UE, and receives the received UE.
- -Perform channel estimation of PDSCH using RS The user apparatus UE demodulates the PDSCH using the channel estimation value and receives (acquires) DL data.
- the user apparatus UE in the transmission mode in which the user apparatus UE receives the PDSCH using UE-RS, the user apparatus UE is allocated to itself in the subframe to which the SS is mapped.
- an RB to which an SS is mapped is included in a part of an RB of a PDSCH that is present, it is specified that the mobile terminal does not receive all the RBs of the PDSCH allocated to itself.
- the base station eNB needs to perform PDSCH scheduling so as to avoid the RB to which the SS is mapped in the subframe to which the SS is mapped.
- the base station eNB schedules PDSCH without avoiding the RB to which the SS is mapped, even in the subframe to which the SS is mapped.
- the user apparatus UE is also allocated to itself even if the RB to which SS is mapped is included in the RB of PDSCH allocated to itself in the subframe to which SS is mapped. It operates to receive the PDSCH RB.
- Processing procedure 1 “conventional UE-RS mapping pattern” is applied as it is as the position of the resource element to which the UE-RS is mapped.
- the base station eNB When the RB to which the SS is mapped is included in the RB of the PDSCH allocated to the user apparatus UE in the subframe to which the SS is mapped, only the UE-RS that does not overlap with the SS is used. It operates to receive the RB of the PDSCH assigned to itself. Also, the base station eNB operates to perform PDSCH scheduling without avoiding the RB to which the SS is mapped even in the subframe to which the SS is mapped.
- FIG. 9A and FIG. 9B are diagrams for explaining the processing procedure 1 according to the embodiment.
- the squares in FIGS. 9A and 9B correspond to resource elements.
- 9A and 9B UE-RS is mapped to “Other (including TDD downlink subframe and FDD)” in “Conventional UE-RS mapping pattern” shown in FIG. Corresponds to the pattern of resource elements to which UE-RS is mapped.
- 9A and 9B corresponds to SSS in TDD (as described in FIG. 6B, SSS in TDD is mapped to the last symbol of the subframe).
- SSS in TDD is mapped to the last symbol of the subframe.
- the user apparatus UE performs UE-RS mapping to the area A in FIGS. 9A and 9B (that is, UE-RS mapped to two consecutive resource elements). ) To receive the PDSCH RB assigned to itself.
- the base station eNB operates to perform PDSCH scheduling without avoiding the RB to which the SS is mapped even in the subframe to which the SS is mapped.
- the base station eNB may transmit a UE-RS that lacks a part in the area B.
- the base station eNB lacks a part in the area B as shown in FIG. 9B.
- PDSCH may be transmitted instead of UE-RS.
- the base station eNB can perform PDSCH scheduling without avoiding the RB to which the SS is mapped even in the subframe to which the SS is mapped. Further, the user apparatus UE can receive the RB to which the SS is mapped even in the subframe to which the SS is mapped. Thereby, it is possible to improve throughput in the wireless communication system.
- a pattern in which the position of the UE-RS is shifted so that resource elements to which SS and UE-RS are mapped does not overlap is referred to as a “new UE-RS mapping pattern” for convenience. Call it.
- the user apparatus UE operates to receive the PDSCH RB allocated to itself using the UE-RS transmitted in the “new UE-RS mapping pattern” in the subframe to which the SS is mapped. To do.
- the base station eNB transmits the UE-RS according to the “new UE-RS mapping pattern” in the subframe to which the SS is mapped, and performs PDSCH scheduling without avoiding the RB to which the SS is mapped.
- process procedure 2 will be described by dividing it into a plurality of process procedures.
- FIG. 10A and 10B are diagrams for explaining the processing procedure 2-1 according to the embodiment.
- FIG. 10A shows the position of UE-RS in a subframe in which SS is transmitted
- FIG. 10B shows the position of UE-RS in a subframe in which SS is not transmitted.
- the base station eNB is within the range surrounded by the section represented by the subframe in which the SS is mapped in the time direction and the section in which the SS is mapped in the frequency direction.
- UE-RSs that overlap (collision) with SS among UE-RSs mapped within are shifted in the time direction so as not to collide with SS (ie, shifted to the position of UE-RS shown in A of FIG. 10A, ie, It operates to transmit the UE-RS according to the “new UE-RS mapping pattern” shifted by 3 resource elements back in the time direction.
- the base station eNB does not transmit a section where SS overlaps with the UE-RS in the frequency direction (collision) (a section where the SS is not mapped in the frequency direction) and SS is not transmitted.
- UE-RS is transmitted according to “conventional UE-RS mapping pattern”. Specifically, the base station eNB transmits the UE-RS without shifting the position of the UE-RS for the region B in FIG. 10A and the region A in FIG. 10B.
- the user apparatus UE transmits the UE-RS transmitted in the “new UE-RS mapping pattern” and the UE-RS transmitted in the “conventional UE-RS mapping pattern”. Are used to perform channel estimation and receive the PDSCH RB assigned to itself. Further, the user apparatus UE performs channel estimation using the UE-RS transmitted in the “conventional UE-RS mapping pattern” in the subframe in which the SS is not transmitted, and determines the RB of the PDSCH allocated to itself. Operates to receive.
- the position of the UE-RS shown in FIGS. 10A and 10B is mapped to the UE-RS in the case of “others (including TDD downlink subframe and FDD)” in the pattern shown in FIG. 3 as described above. This corresponds to the resource element pattern, and the SS position corresponds to the SSS in TDD.
- the PSS in the case of FDD, is mapped to the SS position in FIG. 10A, and the SSS is mapped to the adjacent symbol. Therefore, even in the case of FDD, collision of SS and UE-RS can be avoided by using the “new UE-RS mapping pattern” shown in FIGS. 10A and 10B.
- the “new UE-RS mapping pattern” shown in FIG. 10A and FIG. 10B is an example.
- the UE-RS is assigned to the resource element at any position. It is possible to shift to For example, in this processing procedure, as a “new UE-RS mapping pattern”, a pattern in which the UE-RS at the position shown in A of FIG. 10A is further shifted back by one resource element in the time direction is used. May be.
- the position of the UE-RS may be shifted in the frequency direction in addition to the time direction.
- the UE-RS shown in A of FIG. 10A is further shifted by 1 to 4 resource elements in the frequency direction (for example, the right or left direction of FIG. 10A).
- a pattern may be used.
- the special which is “3, 4, 8 or 9”.
- the pattern of resource elements to which the UE-RS is mapped is different from the case of “others (including TDD downlink subframe and FDD)”. Therefore, for TDD special subframes to which these special subframe configurations are applied, a pattern different from the patterns described so far may be applied as the “new UE-RS mapping pattern”. Good.
- different patterns may be applied to TDD and FDD as “new UE-RS mapping pattern”.
- processing procedure 2-2 In the processing procedure 2-2, the “new UE-RS mapping pattern” is applied in the subframe in which the SS is transmitted, and “conventional UE-RS in the subframe in which the SS is not transmitted”. "Mapping pattern” is applied. Other points that are not mentioned may be the same as the procedure 2-1.
- FIG. 11A and FIG. 11B are diagrams for explaining the processing procedure 2-2 according to the embodiment.
- FIG. 11A shows the position of the UE-RS in the subframe in which the SS is transmitted
- FIG. 11B shows the position of the UE-RS in the subframe in which the SS is not transmitted.
- the base station eNB shifts the UE-RS to the position shown in A of FIG. 11A according to the “new UE-RS mapping pattern” in the subframe in which the SS is transmitted.
- Send UE-RS Send UE-RS.
- the base station eNB transmits the UE-RS according to the “conventional UE-RS mapping pattern” in the subframe in which the SS is not transmitted.
- the user apparatus UE When receiving the PDSCH RB in the subframe in which the SS is transmitted, the user apparatus UE performs channel estimation using the UE-RS transmitted in the “new UE-RS mapping pattern” and is allocated to itself. It operates to receive the RB of the current PDSCH. Further, the user apparatus UE performs channel estimation using the UE-RS transmitted in the “conventional UE-RS mapping pattern” in the subframe in which the SS is not transmitted, and the RB of the PDSCH allocated to itself. Works to receive.
- processing procedure 2-3 In the processing procedure 2-3, the “new UE-RS mapping pattern” is applied to all subframes. Other points that are not mentioned may be the same as the procedure 2-1.
- FIG. 12A and 12B are diagrams for explaining the processing procedure 2-3 according to the embodiment.
- FIG. 12A shows the position of the UE-RS in the subframe where the SS is transmitted
- FIG. 12B shows the position of the UE-RS in the subframe where the SS is not transmitted.
- the base station eNB shifts the UE-RS according to the “new UE-RS mapping pattern”, that is, shifts the UE-RS to the position shown in A of FIG. 12A and A of FIG. 12B.
- -Send RS As shown in FIG. 12A and FIG. 12B, the base station eNB shifts the UE-RS according to the “new UE-RS mapping pattern”, that is, shifts the UE-RS to the position shown in A of FIG. 12A and A of FIG. 12B.
- the user apparatus UE When receiving the PDSCH RB, the user apparatus UE performs channel estimation using the UE-RS transmitted in the “new UE-RS mapping pattern”, and receives the PDSCH RB allocated to itself. To work.
- the base station eNB can perform PDSCH scheduling without avoiding the RB to which the SS is mapped even in the subframe to which the SS is mapped. Further, the user apparatus UE can receive the RB to which the SS is mapped even in the subframe to which the SS is mapped. Thereby, it is possible to improve throughput in the wireless communication system.
- the user apparatus UE and the base station eNB in the embodiment support only one of the processing procedure 1, the processing procedure 2-1, the processing procedure 2-2, and the processing procedure 2-3 described above. Alternatively, some or all of these processing procedures may be supported, and the processing procedure to be used may be instructed from the base station eNB to the user apparatus UE.
- the user apparatus UE may notify the base station eNB that it has the capability to cope with the processing procedure described above.
- FIG. 13 is a sequence diagram illustrating a processing procedure of the wireless communication system according to the embodiment.
- the user apparatus UE transmits a capability notification message indicating that the user apparatus UE has the capability corresponding to the processing procedure described above to the base station eNB (S21).
- the user apparatus UE specifically specifies the processing procedure that it corresponds to among the processing procedure 1, processing procedure 2-1, processing procedure 2-2, and processing procedure 2-3. You may make it notify to eNB.
- the capability notification message may be a UECapabilityInformation message in the RRC message.
- the base station eNB transmits a message instructing to transmit the UE-RS to the user apparatus UE using the processing procedure according to the present embodiment (S22).
- the base station eNB may transmit a message specifically instructing which processing procedure to use to the user apparatus UE.
- the message may be, for example, an RRC message or a MAC layer control message.
- the base station eNB transmits DL data using the processing procedure instructed to the user apparatus UE (S23).
- FIG. 14 is a diagram illustrating a functional configuration example of the base station according to the embodiment.
- the base station eNB includes a signal transmission unit 101, a signal reception unit 102, a capability management unit 103, and a transmission signal generation unit 104.
- FIG. 14 shows only functional units that are particularly related to the embodiment of the present invention in the base station eNB, and has at least a function (not shown) for performing an operation based on LTE.
- the functional configuration shown in FIG. 14 is only an example. As long as the operation according to the present embodiment can be executed, the function classification and the name of the function unit may be anything. However, a part of the processing of the base station eNB described so far (for example, only one specific processing procedure or a plurality of specific processing procedures) may be executable.
- the signal transmission unit 101 includes a function of generating a radio signal from the signal generated by the transmission signal generation unit 104 and wirelessly transmitting the signal.
- the signal receiving unit 102 includes a function of wirelessly receiving various signals from each user apparatus UE and acquiring a higher layer signal from the received physical layer signal.
- each of the signal transmission unit 101 and the signal reception unit 102 includes a packet buffer and performs layer 1 (PHY), layer 2 (MAC, RLC, PDCP), and layer 3 (RRC) processing (however, But not limited to this).
- PHY layer 1
- MAC layer 2
- PDCP layer 3
- RRC layer 3
- the capability management unit 103 has a function of acquiring a capability notification message from the user apparatus UE and storing it in a memory or the like. Moreover, the capability management part 103 notifies the transmission signal production
- the transmission signal generation unit 104 generates various signals in the lower layer from the signals in the upper layer to be transmitted from the user apparatus UE, and outputs the signals in which the generated various signals are mapped to predetermined resources (resource elements). Generate and pass to the signal transmission unit 101.
- the signal transmission unit 101 may include a transmission signal generation unit 104.
- the signal generated by the transmission signal generation unit 104 includes various reference signals (UE-RS, CRS, CSI-RS, etc.), a synchronization signal (PSS / SSS), a signal related to PDSCH, and a signal related to PDCCH.
- the transmission signal generation unit 104 sets the UE-RS according to the pattern of either “conventional UE-RS mapping pattern” or “new UE-RS mapping pattern”. RS is mapped to a predetermined resource.
- FIG. 15 is a diagram illustrating a functional configuration example of the user apparatus according to the embodiment.
- the user apparatus UE includes a signal transmission unit 201, a signal reception unit 202, a capability notification unit 203, and a reference signal management unit 204.
- FIG. 15 shows only functional units particularly related to the embodiment of the present invention in the user apparatus UE, and has at least a function (not shown) for performing an operation based on LTE.
- the functional configuration shown in FIG. 15 is only an example. As long as the operation according to the present embodiment can be executed, the function classification and the name of the function unit may be anything. However, a part of the processing of the user apparatus UE described so far (for example, only one specific processing procedure or a plurality of processing procedures) may be executable.
- the signal transmission unit 201 has a function of generating and wirelessly transmitting various signals to be transmitted from the user apparatus UE.
- the signal receiving unit 202 has a function of receiving various radio signals from the base station eNB.
- Each of the signal transmission unit 201 and the signal reception unit 202 includes a packet buffer, and is assumed to perform layer 1 (PHY), layer 2 (MAC, RLC, PDCP), and layer 3 (RRC) processing (however, But not limited to this).
- the signal reception unit 202 is configured to use a resource element pattern (“conventional UE-RS mapping pattern” or “new UE-RS mapping pattern” to which the UE-RS managed by the reference signal management unit 204 is mapped. )),
- the UE has the function of recognizing the position of the resource element to which the UE-RS is transmitted and receiving the UE-RS.
- the signal receiving unit 202 receives (acquires) DL data by performing channel estimation using the received UE-RS and further performing PDSCH demodulation using the channel estimation value.
- the signal receiving unit 202 may be divided into a first receiving unit that receives a reference signal and a second receiving unit that performs demodulation of PDSCH and the like.
- the capability notification unit 203 transmits a capability notification message indicating that the user apparatus UE itself is compatible with the processing procedure according to the present embodiment to the base station eNB.
- the reference signal management unit 204 has a function of managing a resource element pattern (“conventional UE-RS mapping pattern” or “new UE-RS mapping pattern”) to which the UE-RS is mapped. Further, the reference signal management unit 204 may manage in which pattern the UE-RS is mapped in accordance with an instruction from the base station eNB.
- the functional configurations of the user apparatus UE and the base station eNB described above may be realized entirely with hardware circuits (for example, one or a plurality of IC chips), or may be partially configured with hardware circuits. This part may be realized by a CPU and a program.
- FIG. 16 is a diagram illustrating a hardware configuration example of the base station according to the embodiment.
- FIG. 16 shows a configuration closer to the mounting example than FIG.
- the base station eNB performs processing such as an RE (Radio Equipment) module 301 that performs processing related to a radio signal, a BB (Base Band) processing module 302 that performs baseband signal processing, and a higher layer. It has a device control module 303 and a communication IF 304 which is an interface for connecting to a network.
- RE Radio Equipment
- BB Base Band
- the RE module 301 should transmit the digital baseband signal received from the BB processing module 302 from the antenna by performing D / A (Digital-to-Analog) conversion, modulation, frequency conversion, power amplification, and the like. Generate a radio signal.
- a digital baseband signal is generated by performing frequency conversion, A / D (Analog-to-Digital) conversion, demodulation, and the like on the received radio signal, and passes it to the BB processing module 302.
- the RE module 301 includes, for example, part of the signal transmission unit 101 and the signal reception unit 102 illustrated in FIG.
- the BB processing module 302 performs processing for mutually converting an IP packet and a digital baseband signal.
- a DSP (Digital Signal Processor) 312 is a processor that performs signal processing in the BB processing module 302.
- the memory 322 is used as a work area for the DSP 312.
- the BB processing module 302 includes, for example, a part of the signal transmission unit 101, a part of the signal reception unit 102, and the transmission signal generation unit 104 illustrated in FIG.
- the device control module 303 performs IP layer protocol processing, OAM (Operation and Maintenance) processing, and the like.
- the processor 313 is a processor that performs processing performed by the device control module 303.
- the memory 323 is used as a work area for the processor 313.
- the auxiliary storage device 333 is, for example, an HDD or the like, and stores various setting information for operating the base station eNB itself.
- the device control module 303 includes, for example, the capability management unit 103 shown in FIG.
- FIG. 17 is a diagram illustrating a hardware configuration example of the user apparatus according to the embodiment.
- FIG. 17 shows a configuration closer to the mounting example than FIG.
- the user apparatus UE includes an RE module 401 that performs processing related to a radio signal, a BB processing module 402 that performs baseband signal processing, a device control module 403 that performs processing such as an upper layer, and a SIM card. And a SIM slot 404 that is an interface for accessing the.
- the RE module 401 generates a radio signal to be transmitted from the antenna by performing D / A conversion, modulation, frequency conversion, power amplification, and the like on the digital baseband signal received from the BB processing module 402.
- a digital baseband signal is generated by performing frequency conversion, A / D conversion, demodulation, and the like on the received radio signal, and passed to the BB processing module 402.
- the RE module 401 includes, for example, part of the signal transmission unit 201 and the signal reception unit 202 illustrated in FIG.
- the BB processing module 402 performs processing for mutually converting an IP packet and a digital baseband signal.
- the DSP 412 is a processor that performs signal processing in the BB processing module 402.
- the memory 422 is used as a work area for the DSP 412.
- the BB processing module 402 includes, for example, a part of the signal transmission unit 201, a part of the signal reception unit 202, and a reference signal management unit 204 shown in FIG.
- the device control module 403 performs IP layer protocol processing, various application processing, and the like.
- the processor 413 is a processor that performs processing performed by the device control module 403.
- the memory 423 is used as a work area for the processor 413.
- the processor 413 reads / writes data from / to the SIM via the SIM slot 404.
- the device control module 403 includes, for example, a capability notification unit 203 illustrated in FIG.
- a base station that communicates with a user apparatus in a radio communication system that supports LTE, a section represented by a predetermined subframe to which a synchronization signal is mapped in a time direction, and a frequency direction UE-specific reference according to a first pattern in which a UE-specific reference signal is mapped to a resource element other than a resource element to which the synchronization signal is mapped in a range surrounded by a section to which the synchronization signal is mapped A generator for generating a signal to which the signal is mapped; There is provided a base station having a transmitter for transmitting the generated signal.
- the base station eNB provides a technique capable of realizing an improvement in throughput in a radio communication system supporting LTE.
- the generation unit includes the first pattern in a resource element in a range surrounded by a section represented by the predetermined subframe in the time direction and a section in which the synchronization signal is not mapped in the frequency direction.
- a signal to which the UE-specific reference signal is mapped with a different second pattern may be generated.
- the base station eNB can transmit the UE-RS by applying the “conventional UE-RS mapping pattern” for the RB to which the SS is not mapped.
- the generation unit may perform UE in the first pattern on resource elements in a range surrounded by a section represented by the predetermined subframe in the time direction and a section in which the synchronization signal is not mapped in the frequency direction.
- a signal to which the unique reference signal is mapped may be generated.
- the base station eNB can transmit the UE-RS by uniformly applying the “new UE-RS mapping pattern” in the subframe to which the SS is mapped, and can simplify the processing procedure. it can.
- the generation unit may generate a signal in which a UE-specific reference signal is mapped in the first pattern to a resource element in a subframe to which a synchronization signal is not mapped in the time direction. Accordingly, the base station eNB can transmit the UE-RS by applying a uniform “new UE-RS mapping pattern” in all subframes, and can further simplify the processing procedure.
- the generation unit assigns resource elements in the section represented by the predetermined subframe in the time direction.
- a signal to which the UE-specific reference signal is mapped in a second pattern different from the first pattern may be generated.
- the base station eNB can transmit the UE-RS by applying the “conventional UE-RS mapping pattern” in the subframe to which the CSI-RS is mapped, thereby simplifying the processing procedure. be able to.
- the information processing apparatus may further include a management unit that notifies the user apparatus that a UE-specific reference signal mapped with the first pattern is transmitted. Thereby, the base station eNB can notify the user apparatus UE in advance that the processing procedure according to the present embodiment is applied.
- a base station that communicates with a user apparatus in a radio communication system that supports LTE, a section represented by a predetermined subframe to which a synchronization signal is mapped in a time direction, and a frequency direction Among resource elements in which UE-specific reference signals are mapped in a predetermined pattern to resource elements in a range surrounded by a section to which the synchronization signal is mapped, and UE-specific reference signals are mapped according to the predetermined pattern, A generation unit that generates a signal in which a physical downlink shared channel signal is mapped instead of a UE-specific reference signal to a resource element that is continuous in a time direction with a symbol to which the synchronization signal is mapped in the range; And a transmitter that transmits the signal.
- the base station eNB provides a technique capable of realizing an improvement in throughput in a radio communication system supporting LTE.
- a user apparatus that communicates with a base station in a radio communication system supporting LTE, a section represented by a predetermined subframe to which a synchronization signal is mapped in a time direction, and a frequency direction Receiving UE-specific reference signals that are mapped to resource elements that are continuous in the time direction among UE-specific reference signals that are mapped in a predetermined pattern to resource elements in a range surrounded by a section to which the synchronization signal is mapped There is provided a user apparatus having a first receiving unit that receives a signal of a physical downlink shared channel using the UE-specific reference signal received by the first receiving unit. .
- This user apparatus UE provides a technique capable of improving throughput in a radio communication system supporting LTE.
- a reference signal transmission method executed by a base station that communicates with a user apparatus in a radio communication system supporting LTE, and is represented by a predetermined subframe to which a synchronization signal is mapped in the time direction.
- a UE-specific reference signal is mapped to a resource element other than a resource element to which the synchronization signal is mapped in a range surrounded by a section to which the synchronization signal is mapped in the frequency direction
- a reference signal transmission method is provided that includes generating a signal to which a UE-specific reference signal is mapped according to the pattern, and transmitting the generated signal. With this reference signal transmission method, a technique capable of improving throughput in a wireless communication system supporting LTE is provided.
- a signal reception method executed by a user apparatus communicating with a base station in a radio communication system supporting LTE, in a predetermined subframe to which a synchronization signal is mapped in a time direction Among UE-specific reference signals mapped in a predetermined pattern to resource elements in a range surrounded by a section represented by the section to which the synchronization signal is mapped in the frequency direction, mapping is performed on resource elements continuous in the time direction
- a signal reception method comprising: receiving a UE-specific reference signal to be received; and receiving a physical downlink shared channel signal using the received UE-specific reference signal.
- each device user device UE / base station eNB
- the configuration of each device (user device UE / base station eNB) described in the embodiment of the present invention is realized by executing the program by the CPU (processor) in the device including the CPU and the memory. It may be a configuration, may be a configuration realized by hardware such as a hardware circuit provided with processing logic described in the present embodiment, or may be a mixture of programs and hardware Good.
- the operations of a plurality of functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by a plurality of components.
- the order of the sequences and flowcharts described in the embodiments may be changed as long as there is no contradiction.
- the user apparatus UE / base station eNB has been described using a functional block diagram, but such an apparatus may be realized by hardware, software, or a combination thereof.
- the software operated by the processor of the user apparatus UE according to the embodiment of the present invention and the software operated by the processor of the base station eNB according to the embodiment of the present invention are random access memory (RAM), flash memory, and read-only, respectively. It may be stored in any appropriate storage medium such as a memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server or the like.
- the “new UE-RS mapping pattern” is an example of the first pattern.
- the “conventional UE-RS mapping pattern” is an example of a second pattern and a predetermined pattern.
- UE user apparatus eNB base station 101 signal transmission unit 102 signal reception unit 103 capability management unit 104 transmission signal generation unit 201 signal transmission unit 202 signal reception unit 203 capability notification unit 204 reference signal management unit 301 RE module 302 BB processing module 303 device control Module 304 Communication IF 401 RE module 402 BB processing module 403 Device control module 404 SIM slot
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Abstract
Description
まず、現在の3GPPで規定されているUE-RSがマッピングされる位置について説明する。非特許文献2によれば、UE-RSは、図3に示すようにアンテナポートごとに周波数多重(FDM: Frequency Division Multiplex)及び符号分割多重(CDM:Code Division Multiplex)され、予め定められたリソースエレメントにマッピングされて基地局eNBから送信される。
図7は、実施の形態に係る無線通信システムのシステム構成例を示す図である。図7に示すように、実施の形態に係る無線通信システムは、基地局eNB及びユーザ装置UEを有している。なお、図7の例では、基地局eNB及びユーザ装置UEが1つずつ図示されているが、複数の基地局eNBを有していてもよいし、複数のユーザ装置UEを有していてもよい。
(処理手順その1)
処理手順その1では、UE-RSがマッピングされるリソースエレメントの位置として、「従来のUE-RSのマッピングパターン」がそのまま適用される。
処理手順その2では、SSがマッピングされるサブフレームにおいて、UE-RSがマッピングされるリソースエレメントの位置を、「従来のUE-RSのマッピングパターン」とは異なる位置にシフトさせることで、SSとUE-RSとがマッピングされるリソースエレメントが重複(衝突)しないようにする。
図10A及び図10Bは、実施の形態に係る処理手順その2-1を説明するための図である。図10Aは、SSが送信されるサブフレームにおけるUE-RSの位置を示しており、図10Bは、SSが送信されないサブフレームにおけるUE-RSの位置を示している。
図10A及び図10Bに示す「新たなUE-RSのマッピングパターン」は一例であり、本実施の形態では、SS及びUE-RSが衝突しないのであれば、UE-RSを、あらゆる位置のリソースエレメントにシフトさせることが可能である。例えば、本処理手順では、「新たなUE-RSのマッピングパターン」として、図10AのAに示す位置のUE-RSを、更に時間方向に1リソースエレメント戻るようにシフトさせたパターンを用いるようにしてもよい。
処理手順その2-2では、SSが送信されるサブフレームでは、「新たなUE-RSのマッピングパターン」が適用されるようにして、SSが送信されないサブフレームでは、「従来のUE-RSのマッピングパターン」が適用されるようにする。その他言及しない点は処理手順その2-1と同一でよい。
処理手順その2-3では、全てのサブフレームにおいて、「新たなUE-RSのマッピングパターン」が適用されるようにする。その他言及しない点は処理手順その2-1と同一でよい。
実施の形態におけるユーザ装置UE及び基地局eNBは、以上説明した処理手順その1、処理手順その2-1、処理手順その2-2、及び処理手順その2-3のうちの1つのみをサポートするようにしてもよいし、これらの処理手順のうちの一部又は全部をサポートし、どの処理手順を用いるのかを、基地局eNBからユーザ装置UEに指示するようにしてもよい。
(基地局)
図14は、実施の形態に係る基地局の機能構成例を示す図である。図14に示すように、基地局eNBは、信号送信部101、信号受信部102、能力管理部103及び送信信号生成部104を有する。図14は、基地局eNBにおいて本発明の実施の形態に特に関連する機能部のみを示すものであり、少なくともLTEに準拠した動作を行うための図示しない機能も有するものである。また、図14に示す機能構成は一例に過ぎない。本実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。ただし、これまでに説明した基地局eNBの処理の一部(例:特定の1つ又は複数の処理手順のみ等)を実行可能としてもよい。
図15は、実施の形態に係るユーザ装置の機能構成例を示す図である。図15に示すように、ユーザ装置UEは、信号送信部201、信号受信部202、能力通知部203及び参照信号管理部204を有する。図15は、ユーザ装置UEにおいて本発明の実施の形態に特に関連する機能部のみを示すものであり、少なくともLTEに準拠した動作を行うための図示しない機能も有するものである。また、図15に示す機能構成は一例に過ぎない。本実施の形態に係る動作を実行できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。ただし、これまでに説明したユーザ装置UEの処理の一部(例:特定の1つ又は複数の処理手順のみ等)を実行可能としてもよい。
図16は、実施の形態に係る基地局のハードウェア構成例を示す図である。図16は、図14よりも実装例に近い構成を示している。図16に示すように、基地局eNBは、無線信号に関する処理を行うRE(Radio Equipment)モジュール301と、ベースバンド信号処理を行うBB(Base Band)処理モジュール302と、上位レイヤ等の処理を行う装置制御モジュール303と、ネットワークと接続するためのインタフェースである通信IF304とを有する。
図17は、実施の形態に係るユーザ装置のハードウェア構成例を示す図である。図17は、図15よりも実装例に近い構成を示している。図17に示すように、ユーザ装置UEは、無線信号に関する処理を行うREモジュール401と、ベースバンド信号処理を行うBB処理モジュール402と、上位レイヤ等の処理を行う装置制御モジュール403と、SIMカードにアクセスするインタフェースであるSIMスロット404とを有する。
以上、実施の形態によれば、LTEをサポートする無線通信システムにおいてユーザ装置と通信する基地局であって、時間方向において同期信号がマッピングされる所定のサブフレームで表される区間と、周波数方向において前記同期信号がマッピングされる区間とで囲まれた範囲の中で、前記同期信号がマッピングされるリソースエレメント以外のリソースエレメントにUE固有参照信号がマッピングされる第一のパターンに従って、UE固有参照信号がマッピングされる信号を生成する生成部と、
生成される前記信号を送信する送信部と、を有する基地局が提供される。この基地局eNBにより、LTEをサポートする無線通信システムにおいて、スループットの向上を実現することが可能な技術が提供される。
以上、本発明の実施の形態で説明する各装置(ユーザ装置UE/基地局eNB)の構成は、CPUとメモリを備える当該装置において、プログラムがCPU(プロセッサ)により実行されることで実現される構成であってもよいし、本実施の形態で説明する処理のロジックを備えたハードウェア回路等のハードウェアで実現される構成であってもよいし、プログラムとハードウェアが混在していてもよい。
eNB 基地局
101 信号送信部
102 信号受信部
103 能力管理部
104 送信信号生成部
201 信号送信部
202 信号受信部
203 能力通知部
204 参照信号管理部
301 REモジュール
302 BB処理モジュール
303 装置制御モジュール
304 通信IF
401 REモジュール
402 BB処理モジュール
403 装置制御モジュール
404 SIMスロット
Claims (10)
- LTEをサポートする無線通信システムにおいてユーザ装置と通信する基地局であって、
時間方向において同期信号がマッピングされる所定のサブフレームで表される区間と、周波数方向において前記同期信号がマッピングされる区間とで囲まれた範囲の中で、前記同期信号がマッピングされるリソースエレメント以外のリソースエレメントにUE固有参照信号がマッピングされる第一のパターンに従って、UE固有参照信号がマッピングされる信号を生成する生成部と、
生成される前記信号を送信する送信部と、
を有する基地局。 - 前記生成部は、
時間方向において前記所定のサブフレームで表される区間と、周波数方向において前記同期信号がマッピングされない区間とで囲まれた範囲のリソースエレメントに、前記第一のパターンとは異なる第二のパターンでUE固有参照信号がマッピングされる信号を生成する、
請求項1に記載の基地局。 - 前記生成部は、
時間方向において前記所定のサブフレームで表される区間と、周波数方向において前記同期信号がマッピングされない区間とで囲まれた範囲のリソースエレメントに、前記第一のパターンでUE固有参照信号がマッピングされる信号を生成する、
請求項1に記載の基地局。 - 前記生成部は、
時間方向において同期信号がマッピングされないサブフレームにおけるリソースエレメントに、前記第一のパターンでUE固有参照信号がマッピングされる信号を生成する、
請求項3に記載の基地局。 - 前記生成部は、
時間方向において前記所定のサブフレームで表される区間に、チャネル状態情報参照信号がマッピングされる場合、時間方向において前記所定のサブフレームで表される区間におけるリソースエレメントに、前記第一のパターンとは異なる第二のパターンでUE固有参照信号がマッピングされる信号を生成する、
請求項1乃至4のいずれか一項に記載の基地局。 - 前記ユーザ装置に、前記第一のパターンでマッピングされるUE固有参照信号を送信することを通知する管理部、
を有する請求項1乃至5のいずれか一項に記載の基地局。 - LTEをサポートする無線通信システムにおいてユーザ装置と通信する基地局であって、
時間方向において同期信号がマッピングされる所定のサブフレームで表される区間と、周波数方向において前記同期信号がマッピングされる区間とで囲まれた範囲のリソースエレメントに、所定のパターンでUE固有参照信号がマッピングされ、
前記所定のパターンに従ってUE固有参照信号がマッピングされるリソースエレメントのうち、前記範囲の中で前記同期信号がマッピングされるシンボルと時間方向で連続するリソースエレメントにはUE固有参照信号に代えて物理下り共有チャネルの信号がマッピングされる信号を生成する生成部と、
生成される前記信号を送信する送信部と、
を有する基地局。 - LTEをサポートする無線通信システムにおいて基地局と通信するユーザ装置であって、
時間方向において同期信号がマッピングされる所定のサブフレームで表される区間と、周波数方向において前記同期信号がマッピングされる区間とで囲まれた範囲のリソースエレメントに所定のパターンでマッピングされるUE固有参照信号のうち、時間方向に連続したリソースエレメントにマッピングされるUE固有参照信号を受信する第一の受信部と、
前記第一の受信部で受信した前記UE固有参照信号を用いて、物理下り共有チャネルの信号を受信する第二の受信部と、
を有するユーザ装置。 - LTEをサポートする無線通信システムにおいてユーザ装置と通信する基地局が実行する参照信号送信方法であって、
時間方向において同期信号がマッピングされる所定のサブフレームで表される区間と、周波数方向において前記同期信号がマッピングされる区間とで囲まれた範囲の中で、前記同期信号がマッピングされるリソースエレメント以外のリソースエレメントにUE固有参照信号がマッピングされる第一のパターンに従って、UE固有参照信号がマッピングされる信号を生成するステップと、
生成される前記信号を送信するステップと、
を有する参照信号送信方法。 - LTEをサポートする無線通信システムにおいて基地局と通信するユーザ装置が実行する信号受信方法であって、
時間方向において同期信号がマッピングされる所定のサブフレームで表される区間と、周波数方向において前記同期信号がマッピングされる区間とで囲まれた範囲のリソースエレメントに所定のパターンでマッピングされるUE固有参照信号のうち、時間方向に連続したリソースエレメントにマッピングされるUE固有参照信号を受信するステップと、
受信した前記UE固有参照信号を用いて、物理下り共有チャネルの信号を受信するステップと、
を有する信号受信方法。
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112970222A (zh) * | 2018-11-02 | 2021-06-15 | At&T知识产权一部有限合伙公司 | 高级网络中的解调参考信号生成 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102606781B1 (ko) * | 2016-09-02 | 2023-11-27 | 삼성전자 주식회사 | 무선 통신 시스템에서 효율적인 데이터 송수신 방법 및 장치 |
KR20190105227A (ko) | 2017-02-03 | 2019-09-16 | 주식회사 윌러스표준기술연구소 | 무선 통신 시스템에서 레퍼런스 신호 및 데이터 채널의 송수신 방법, 장치, 및 시스템 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8576692B2 (en) * | 2009-09-10 | 2013-11-05 | Qualcomm Incorporated | Transmission of UE-specific reference signal for wireless communication |
US8995385B2 (en) * | 2011-08-05 | 2015-03-31 | Samsung Electronics Co., Ltd. | Apparatus and method for UE-specific demodulation reference signal scrambling |
US9344247B2 (en) * | 2011-09-09 | 2016-05-17 | Lg Electronics Inc. | Method for transmitting and receiving UE-specific reference signal and apparatus for same |
US9780934B2 (en) * | 2013-05-09 | 2017-10-03 | Lg Electronics Inc. | Method for puncturing UE specific reference signal in radio access system supporting new carrier type and apparatus supporting same |
CN105531949B (zh) * | 2013-09-17 | 2018-06-19 | 华为技术有限公司 | 增强下行ue特定解调参考信号以促进小区间干扰抑制的设备和方法 |
-
2016
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Non-Patent Citations (3)
Title |
---|
HUAWEI: "Consideration on CSI-RS design for CoMP and text proposal to 36.814", 3GPP TSG RAN WG1 MEETING #58 R1-093031, 28 August 2009 (2009-08-28), XP050351428 * |
NTT DOCOMO, INC. ET AL.: "Discussion on a new UE behavior to receive PDSCH containing RBs with PSS/SSS/PBCH", 3GPP TSG RAN WG1 MEETING #83 R1- 157443, 22 November 2015 (2015-11-22), XP051003586 * |
NTT DOCOMO, INC.: "Discussion on a new UE behavior to receive PDSCH containing RBs with PSS/SSS/PBCH", 3GPP TSG RAN WG1 MEETING #83 R1- 157226, 7 November 2015 (2015-11-07), XP051003449 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112970222A (zh) * | 2018-11-02 | 2021-06-15 | At&T知识产权一部有限合伙公司 | 高级网络中的解调参考信号生成 |
JP2022506471A (ja) * | 2018-11-02 | 2022-01-17 | エイ・ティ・アンド・ティ インテレクチュアル プロパティ アイ,エル.ピー. | 先進ネットワークにおける復調用参照信号の生成 |
US11418992B2 (en) | 2018-11-02 | 2022-08-16 | At&T Intellectual Property I, L.P. | Generation of demodulation reference signals in advanced networks |
JP7225391B2 (ja) | 2018-11-02 | 2023-02-20 | エイ・ティ・アンド・ティ インテレクチュアル プロパティ アイ,エル.ピー. | 先進ネットワークにおける復調用参照信号の生成 |
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EP3376811A1 (en) | 2018-09-19 |
US20180323931A1 (en) | 2018-11-08 |
JPWO2017082232A1 (ja) | 2018-08-30 |
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