WO2021005716A1 - 端末及び送信方法 - Google Patents
端末及び送信方法 Download PDFInfo
- Publication number
- WO2021005716A1 WO2021005716A1 PCT/JP2019/027173 JP2019027173W WO2021005716A1 WO 2021005716 A1 WO2021005716 A1 WO 2021005716A1 JP 2019027173 W JP2019027173 W JP 2019027173W WO 2021005716 A1 WO2021005716 A1 WO 2021005716A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- random access
- access preamble
- terminal
- resource
- time domain
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims description 72
- 238000000034 method Methods 0.000 title claims description 39
- 238000004891 communication Methods 0.000 claims description 56
- 238000010586 diagram Methods 0.000 description 25
- 230000006870 function Effects 0.000 description 16
- 230000011664 signaling Effects 0.000 description 13
- 238000012545 processing Methods 0.000 description 11
- 230000004044 response Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000013507 mapping Methods 0.000 description 3
- 101100274486 Mus musculus Cited2 gene Proteins 0.000 description 2
- 101150096622 Smr2 gene Proteins 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 101100533725 Mus musculus Smr3a gene Proteins 0.000 description 1
- 101150071746 Pbsn gene Proteins 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000013468 resource allocation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
-
- 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
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/008—Transmission of channel access control information with additional processing of random access related information at receiving side
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
Definitions
- the present invention relates to a terminal and a transmission method in a wireless communication system.
- NR New Radio
- 5G 5th Generation Partnership Project
- the study of the so-called wireless communication method is in progress.
- various wireless technologies are being studied in order to satisfy the requirement that the delay of the wireless section be 1 ms or less while achieving a throughput of 10 Gbps or more.
- the dl-UL-TransmissionPeriodity of TDD-UL-DL-pattern was 0.5 ms, 0.625 ms, 1 ms, 1.25 ms, 2 ms, 2.5 ms, 5 ms, and 10 ms at the beginning of the formulation of the release 15 specifications.
- 3 ms and 4 ms have been set as dl-UL-TransmissionPeriodity since the specifications in September 2018. Has been added.
- 3GPP TS38.211 V15.6.0 (2019-06) 3GPP TS36.211 V15.6.0 (2019-06) 3GPP TSG-RAN WG2 Meeting # 103, R2-183303, Gothenburg, Sweden, 20-24 August 2018 3GPP TSG-RAN WG2 Meeting NR Adhoc 1807, R2-1810963, Montreal, Canda, 2nd-6th July 2018 3GPP TSG-RAN WG2 # 103, R2-183279, Gothenburg, Sweden, 20-24 August, 2018
- a receiver that receives an index that specifies setting information for transmitting a random access preamble and a resource in a time domain for the receiver to transmit the random access preamble are specified.
- the resource in the time domain for transmitting the random access preamble included in the setting information specified by the index is the resource in the time domain specified by the additional information.
- a control unit and a terminal including a control unit, which are set by replacing with, are provided.
- a method of suppressing interference given to another system when a terminal transmits a random access preamble is provided.
- the wireless communication system in the following embodiment basically conforms to NR, but this is an example, and the wireless communication system in this embodiment is a wireless communication other than NR in a part or all of them. It may be compliant with a communication system (eg LTE).
- a communication system eg LTE
- FIG. 1 shows a configuration diagram of a wireless communication system according to the present embodiment.
- the wireless communication system according to the present embodiment includes a terminal (user device) 10 and a base station 20.
- FIG. 1 shows one terminal 10 and one base station 20, this is an example, and there may be a plurality of each.
- the terminal 10 is a communication device having a wireless communication function such as a smartphone, a mobile phone, a tablet, a wearable terminal, and a communication module for M2M (Machine-to-Machine), and is wirelessly connected to the base station 20 by a wireless communication system. Use the various communication services provided.
- the base station 20 is a communication device that provides one or more cells and wirelessly communicates with the terminal 10. Both the terminal 10 and the base station 20 can perform beamforming to transmit and receive signals. Further, the terminal 10 may be referred to as a UE, and the base station 20 may be referred to as an eNB.
- the duplex system may be a TDD (Time Division Duplex) system or an FDD (Frequency Division Duplex) system.
- Random access procedure An example of the random access procedure in the present embodiment will be described with reference to FIG.
- the procedure shown in FIG. 2 may be referred to as initial access.
- the base station 20 transmits a Synchronization Signals and Physical Broadcast Channel (SS / PBCH) block (also referred to as SSB) at a predetermined cycle, and the terminal 10 receives the SS / PBCH block (S11).
- the SS / PBCH block contains a synchronization signal, some of the system information required for initial access (system frame number (SFN), information required to read the rest of the system information, etc.). Further, the terminal 10 receives the System Information Block 1 (SIB1) from the base station 20 (S12).
- SIB1 System Information Block 1
- Msg2 includes a Physical Downlink Control Channel (PDCCH) used for scheduling and a Physical Downlink Shared Channel (PSDCH) that carries physical information, unless otherwise specified.
- PDCH Physical Downlink Control Channel
- PSDCH Physical Downlink Shared Channel
- the terminal 10 that has received the RA response transmits the Message 3 (Msg3) including the predetermined information to the base station 20 (step S15).
- Message 3 is, for example, RRC connection request.
- the base station 20 that has received the Message 3 transmits the Message 4 (Msg 4, eg, RRC connection setup) to the terminal 10 (S16).
- the terminal 10 confirms that the above-mentioned predetermined information is included in the Message 4, it recognizes that the Message 4 is the Message 4 addressed to itself corresponding to the above-mentioned Message 3, completes the random access procedure, and performs the RRC.
- Establish a connection (S17).
- FIG. 2 shows an example in which the Message 3 and the Message 4 are transmitted, but this is only an example.
- the technique according to this embodiment can also be applied to a random access procedure in the case where Message 3 and Message 4 are not transmitted.
- Non-Patent Document 1 stipulates that the random access preamble can be transmitted only in the time resource specified by the parameter plac-ConfigIndex of the upper layer.
- FIG. 3 is a diagram showing an example of a table of random access settings (Random access connections) specified by patch-Configuration Index in the case of Frequency Range (FR) 1 and TDD.
- the base station 20 notifies the terminal 10 of a value 0 as a PRACH Configuration Index.
- the terminal 10 that receives the value 0 as the PRACH Configuration Index has a preamble format of 0, a random access preamble transmission opportunity cycle of 160 ms, and a random access preamble transmission opportunity of 10 ms wireless frame (radio). It can be detected that the subframe 9 is one of the subframes 0 to 9 included in the frame).
- the cycle of the random access preamble transmission opportunity when the value of PRACH Configuration Index is 1 is 80 ms, and the cycle of the random access preamble transmission opportunity when the value of PRACH Configuration Index is 2. Is 40 ms, and the period of transmission opportunity of the random access preamble when the value of PRACH Configuration Index is any of 3 to 6 is 20 ms.
- FIG. 4 is a diagram showing an example of an Uplink-downlink configuration corresponding to the LTE Time Division Duplex (TDD) system.
- a 10 ms radio frame contains 10 1 ms subframes, and each subframe is either a downlink subframe (displayed as D) or an uplink subframe (with U). (Displayed) or a special subframe (displayed as S).
- the dl-UL-TransmissionPeriodity of TDD-UL-DL-pattern was 0.5ms, 0.625ms, 1ms, 1.25ms, 2ms, 2.5ms, 5ms, and 10ms at the beginning of the 3GPP Release 15 specifications. It was.
- the LTE TDD system and the NR TDD system align the timing of radio frames and perform communication using a common frequency band, one communication system gives to the other communication system. Interference needs to be suppressed. For example, if the LTE TDD subframe is assigned to the downlink at a certain timing, and the NR TDD subframe is assigned to the uplink at that timing, the transmission of the NR uplink is performed on the LTE downlink. It can cause great interference with reception. Therefore, when the LTE TDD method and the NR TDD method are used in a common frequency band, both the LTE TDD subframe and the NR TDD subframe at the same timing as the LTE TDD subframe go up. It is expected to be assigned to a link or both to a downlink.
- the timing of the radio frame of the LTE TDD system and the timing of the radio frame of the NR TDD system are aligned, and that spectrum sharing is performed in the LTE system and the NR system.
- 2 is set as the Uplink-downlink configuration shown in FIG.
- the subframes assigned to the uplink are subframes 2 and 7.
- the terminal 10 transmits the random access preamble in the NR system, it is assumed that the terminal 10 transmits the random access preamble in the subframe 2 and / or the subframe 7.
- the subframes for transmitting the random access preamble are 9 and 4, and it is assumed that the subframes 2 and 7 are specified. It has not been.
- FIG. 5 is a diagram showing an example of Proposal 1.
- the table that specifies the random access setting shown in FIG. 3 is used as it is (the table itself shown in FIG. 3 is not changed).
- the base station 20 notifies the terminal 10 of the index of any one of PRACH Configuration Index 0 to 6 of the table shown in FIG. Further, the base station 20 notifies the terminal 10 of a subframe number designating a transmission opportunity of the random access preamble by RRC signaling.
- the terminal 10 does not apply the subframe number specified in the table shown in FIG. 3, but applies the subframe number received from the base station 20 as a transmission opportunity of the random access preamble.
- FIG. 6 is a diagram showing an example of a RACH-ConfigGeneric information element that can be used by the base station 20 when notifying the terminal 10 of a subframe number that specifies a transmission opportunity of a random access preamble.
- the value of the field-Subframe field included in the RACH-ConfigGeneric information element shown in FIG. 6 may specify the number of the subframe in which the random access preamble can be transmitted.
- FIG. 7 is a diagram showing an example of changing the specifications corresponding to Proposal 1.
- FIG. 8 is a diagram showing an example of Proposal 2.
- the table that specifies the random access setting shown in FIG. 3 is used as it is (the table itself shown in FIG. 3 is not changed).
- the base station 20 notifies the terminal 10 of the index of any one of PRACH Configuration Index 0 to 6 of the table shown in FIG.
- the base station 20 uses RRC signaling to terminal an offset between the subframe number specified in the table of FIG. 3 and the subframe number in which the random access preamble can actually be transmitted.
- the terminal 10 can transmit a random access preamble to the number obtained by applying the modulo10 operation to the value obtained by adding the offset value to the subframe number specified in the table shown in FIG. Set as a subframe number.
- the base station 20 transmits a value 0 to the terminal 10 as a PRACH Configuration Index. Further, the base station 20 sets 8 as an offset value between the subframe number specified in the table of FIG. 3 and the subframe number in which the random access preamble can actually be transmitted. Notify the terminal 10 by RRC signaling.
- the base station 20 sets the offset between the subframe number specified in the table of FIG. 3 and the subframe number in which the random access preamble can actually be transmitted.
- It is a figure which shows the example of the RACH-ConfigGeneric information element which can be used when notifying.
- the value of the field-Subframe field included in the RACH-ConfigGeneric information element shown in FIG. 9 enables the subframe number specified in the table of FIG. 3 and the actual random access preamble to be transmitted.
- An offset from the subframe number may be specified.
- FIG. 10 is a diagram showing an example of changing the specifications corresponding to the proposal 2.
- PRACH Configuration Index Alt may be defined as an index different from the PRACH Configuration Index shown in FIG.
- the base station 20 may set any value from 0 to 6 as the PRACH Configuration Index Alt, and then notify the terminal 10 of the PRACH Configuration Index Alt by RRC signaling. Then, the base station 20 may notify the terminal 10 of the subframe number 2 or 7 by RRC signaling. In this case, without changing the table itself in FIG.
- the legacy terminal does not read the PRACH Configuration Index, but only the PRACH Configuration Index. Therefore, the legacy terminal and the terminal 10 corresponding to the method of Proposal 3 are used.
- different PRACH Configuration Indexes can be applied, and the legacy terminal and the terminal 10 corresponding to the method of Proposal 3 can coexist.
- FIG. 11 is a diagram showing an example of a RACH-Configuration Generic information element that can be used when the base station 20 notifies the terminal 10 of the PRACH Configuration Index Alt and the subframe number.
- the base station 20 sets the value of the field of the patch-ConfigurationIndexAlt included in the RACH-ConfigGeneric information element shown in FIG. 11 to any one of 0 to 6, and sets the subframe number (the patch-of FIG. 11).
- the terminal 10 is set to random access corresponding to any of PRACH Configuration Index 0 to 6 shown in FIG. 3, and only the subframe number is set. Can be set to 2 or 7 instead of 9.
- the terminal 10 when the terminal 10 receives the PRACH-ConfigGeneric information element, it determines whether or not the field of prac-ConfigurationIndexAlt is included. In response to detecting that the PRACH-ConfigGeneric information element includes the field of prac-ConfigationIndexAlt, the terminal 10 has any one of 0 to 6 set in the field of pracch-ConfigrationIndexAlt. Get the value and get 2 or 7 as the subframe number. As a result, the terminal 10 sets the random access resource corresponding to the PRACH Configuration Index corresponding to the value set in the field of the patch-Configuration Index, and sets the random access preamble as the subframe number capable of transmitting the random access preamble. It is possible to set 2 or 7.
- FIG. 12 is a diagram showing an example of changing the specifications corresponding to the proposal 3.
- PRACH Configuration Index Alt may be defined as an index different from the PRACH Configuration Index shown in FIG.
- the base station 20 may set any value from 0 to 6 as the PRACH Configuration Index Alt, and then notify the terminal 10 of the PRACH Configuration Index Alt by RRC signaling.
- the base station 20 then RRC-signals the offset between the subframe numbers specified in the table of FIG. 3 and the subframe numbers that are actually capable of transmitting random access preambles. Notifies the terminal 10 with. In this case, without changing the table itself in FIG.
- the legacy terminal does not read the PRACH Configuration Index, but only the PRACH Configuration Index. Therefore, the legacy terminal and the terminal 10 corresponding to the method of Proposal 3 are used.
- different PRACH Configuration Indexes can be applied, and the legacy terminal and the terminal 10 corresponding to the method of Proposal 3 can coexist.
- FIG. 13 is a diagram showing an example of a RACH-Configuration Generic information element that can be used when the base station 20 notifies the terminal 10 of the PRACH Configuration Index Alt and the subframe number.
- the base station 20 sets the value of the field of the patch-ConfigurationIndexAlt included in the RACH-ConfigurationGeneric information element shown in FIG. 11 to any one of 0 to 6, and sets the offset value of the subframe number (FIG. 13).
- the terminal 10 is set to random access corresponding to any of PRACH Configuration Index 0 to 6 shown in FIG. Only the frame number can be set to 2 or 7 instead of 4 or 9.
- FIG. 14 is a diagram showing an example of changing the specifications corresponding to the proposal 4.
- FIG. 15 is a diagram showing an example of Proposal 5. 256 to 271 are added as PRACH Configuration Indexes to the table shown in FIG. 15, and any of Index 256 to 269 corresponds to any of PRACH Configuration Indexes 0 to 6 and a subframe. It is possible to specify a random access setting where only the number is 2 or 7 instead of 4 or 9. Further, the base station 20 can notify the terminal 10 of the PRACH Configuration Index having a value of 256 or more in the RACH-Configuration Generic information element that can be used when notifying the PRACH Configuration Index. Extensions may be made to do so.
- FIG. 16 is a diagram showing an example of a RACH-Configuration Generic information element that can be used when the base station 20 notifies the terminal 10 of the PRACH Configuration Index. It is possible to notify the PRACH Configuration Index having a value of 256 or more by the field of patch-ConfigurationIndex-v16xy included in the RACH-ConfigurationGeneric information element shown in FIG.
- FIG. 17 is a diagram showing an example of modification of the specifications corresponding to the proposal 5.
- FIG. 18 is a diagram showing an example of Proposal 6.
- a table corresponding to the table for specifying the random access setting shown in FIG. 3 and in which the subframe number 2 or 7 can be specified as the subframe in which the random access preamble can be transmitted is newly specified.
- the indexes 0 to 6 which correspond to the PRACH Configuration Index shown in FIG. 3 and the subframe number 2 can be specified, and the PRACH Configuration Index shown in FIG. 3 correspond to the subframe. Indexes 7 to 13 that can specify the number 7 are specified.
- FIG. 19 is a diagram showing an example of a RACH-Configuration Generic information element that can be used when the base station 20 notifies the terminal 10 of the PRACH Configuration Index.
- the field of prach-ConfigurationIndex Alt included in the RACH-ConfigurationGeneric information element shown in FIG. 19 corresponds to the PRACH Configuration Index shown in FIG. 3, and the subframe number 2 or 7 can be specified. It will be possible.
- FIG. 20 is a diagram showing an example of modification of the specifications corresponding to the proposal 6.
- the resource in the NR time domain specified by the PRACH Configuration Index which is capable of transmitting the random access preamble, is the resource in the NR time domain, which is unpaired spectrum.
- TDD time division duplex transmission of LTE
- the UE capacity corresponding to the extension of the above-mentioned proposals 1 to 6 may be specified.
- a terminal 10 compatible with EN-DC RACH-Connect Generic based on any one of Proposals 1 to 6 is applied to the terminal 10 by RRC designated signaling based on the UE capacity. May be set.
- the NR system when the timing of the TDD UL DL configuration is matched between the LTE TDD system and the NR TDD system, the NR system has a RACH of 20 ms, 40 ms, 80 ms, or 160 ms. It is possible to deal with the cycle.
- the terminal 10 and the base station 20 have all the functions described in the present embodiment. However, the terminal 10 and the base station 20 may have only a part of the functions described in the present embodiment.
- the terminal 10 and the base station 20 may be collectively referred to as a communication device.
- FIG. 21 is a diagram showing an example of the functional configuration of the terminal 10. As shown in FIG. 21, the terminal 10 has a transmitting unit 110, a receiving unit 120, and a control unit 130.
- the functional configuration shown in FIG. 21 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the present embodiment can be executed.
- the transmitter 110 may be referred to as a transmitter
- the receiver 120 may be referred to as a receiver.
- the transmission unit 110 creates a transmission from the transmission data and wirelessly transmits the transmission signal. Further, the transmission unit 110 can form one or a plurality of beams.
- the receiving unit 120 wirelessly receives various signals and acquires a signal of a higher layer from the received signal of the physical layer. Further, the receiving unit 120 includes a measuring unit that measures the received signal and acquires the received power and the like.
- the control unit 130 controls the terminal 10.
- the function of the control unit 130 related to transmission may be included in the transmission unit 110, and the function of the control unit 130 related to reception may be included in the reception unit 120.
- the receiving unit 120 of the terminal 10 receives a signal including the PRACH Configuration Index transmitted from the base station 20.
- the control unit 110 of the terminal 10 sets the preamble format corresponding to the value of the PRACH Configuration Index received by the reception unit 120, the cycle of the transmission opportunity of the random access preamble, and the subframe number including the transmission opportunity of the random access preamble. ..
- the transmission unit 110 of the terminal 10 transmits the random access preamble to the base station 20 according to the random access setting set by the control unit 130.
- the receiving unit 120 of the terminal 10 receives a signal including the PRACH Configuration Index transmitted from the base station 20.
- the receiving unit 120 of the terminal 10 receives an additional signal including a subframe number that specifies a transmission opportunity for the random access preamble.
- the control unit 110 of the terminal 10 sets the cycle of the transmission opportunity of the preamble format and the random access preamble corresponding to the value of the PRACH Configuration Index received by the reception unit 120, but the reception unit 120 describes the transmission opportunity of the random access preamble. Sets the subframe number specified by the additional signal received by.
- the receiving unit 120 of the terminal 10 receives a signal including the PRACH Configuration Index transmitted from the base station 20. Further, the receiving unit 120 of the terminal 10 has a subframe number specified by the PRACH Configuration Index received by the receiving unit 120 and a subframe number capable of actually transmitting the random access preamble. Receive additional signals, including offsets between.
- the control unit 110 of the terminal 10 sets the cycle of the transmission opportunity of the preamble format and the random access preamble corresponding to the value of the PRACH Configuration Index received by the reception unit 120, but the reception unit 120 describes the transmission opportunity of the random access preamble. Sets the subframe number specified by the additional signal received by.
- the receiving unit 120 of the terminal 10 receives a signal including an alternative PRACH Configuration Index transmitted from the base station 20.
- the receiving unit 120 of the terminal 10 receives an additional signal including a subframe number that specifies a transmission opportunity for the random access preamble.
- the control unit 110 of the terminal 10 sets the cycle of transmission opportunities of the random access preamble, which is the preamble format specified by the normal PRACH Configuration Index corresponding to the value of the alternative PRACH Configuration Index received by the reception unit 120.
- the subframe number specified by the additional signal received by the receiving unit 120 is set.
- the receiving unit 120 of the terminal 10 receives a signal including an alternative PRACH Configuration Index transmitted from the base station 20. Further, the receiving unit 120 of the terminal 10 actually transmits the random access preamble and the subframe number specified by the normal PRACH Configuration Index corresponding to the value of the alternative PRACH Configuration Index received by the receiving unit 120. It receives an additional signal containing an offset from the subframe number that is allowed.
- the control unit 110 of the terminal 10 sets the cycle of transmission opportunities of the random access preamble, which is the preamble format specified by the normal PRACH Configuration Index corresponding to the value of the alternative PRACH Configuration Index received by the reception unit 120. For the transmission opportunity of the random access preamble, the subframe number specified by the additional signal received by the receiving unit 120 is set.
- the receiving unit 120 of the terminal 10 receives a signal including the added PRACH Configuration Index transmitted from the base station 20.
- the control unit 110 of the terminal 10 serves as a preamble format, a random access preamble transmission opportunity cycle, and a random access preamble transmission opportunity corresponding to the added PRACH Configuration Index value received by the reception unit 120. Set the subframe number.
- a second table may be specified that includes a second set of PRACH Configuration Indexes that specifies subframe numbers other than those specified in the first set of regular PRACH Configuration Indexes.
- the receiving unit 120 of the terminal 10 receives the signal including the PRACH Configuration Index of any one of the second set transmitted from the base station 20.
- the control unit of the terminal 10 has a preamble format, a random access preamble transmission opportunity cycle, and a random access preamble transmission corresponding to the value of any one of the second sets received by the reception unit 120, the PRACH Configuration Index. Set the subframe number as an opportunity.
- FIG. 22 is a diagram showing an example of the functional configuration of the base station 20.
- the base station 20 has a transmitting unit 210, a receiving unit 220, and a control unit 230.
- the functional configuration shown in FIG. 22 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the present embodiment can be executed.
- the transmitter 210 may be referred to as a transmitter, and the receiver 220 may be referred to as a receiver.
- the transmission unit 210 includes a function of generating a signal to be transmitted to the terminal 10 side and transmitting the signal wirelessly. Further, the transmission unit 210 forms one or a plurality of beams.
- the receiving unit 220 includes a function of receiving various signals transmitted from the terminal 10 and acquiring information of, for example, a higher layer from the received signals. Further, the receiving unit 220 includes a measuring unit that measures the received signal and acquires the received power and the like.
- the control unit 230 controls the base station 20.
- the function of the control unit 230 related to transmission may be included in the transmission unit 210, and the function of the control unit 230 related to reception may be included in the reception unit 220.
- the control unit 230 of the base station 20 selects the PRACH Configuration Index that specifies the random access setting to be set in the terminal 10.
- the transmission unit 210 of the base station 20 transmits a signal including the PRACH Configuration Index selected by the control unit 230 to the terminal 10.
- the control unit 230 of the base station 20 changes the subframe number that specifies the transmission opportunity of the random access preamble set by the PRACH Configuration Index to be transmitted to the terminal 10, the changed subframe number is changed.
- the designated information is generated, and the transmission unit 210 transmits a signal including the information for designating the changed subframe number to the terminal 10.
- each functional block may be realized by using one device that is physically or logically connected, or directly or indirectly (for example, by using two or more physically or logically separated devices). , Wired, wireless, etc.) and may be realized using these plurality of devices.
- the functional block may be realized by combining the software with the one device or the plurality of devices.
- Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption.
- broadcasting notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but only these. I can't.
- a functional block (constituent unit) for functioning transmission is called a transmitting unit or a transmitter.
- the method of realizing each of them is not particularly limited.
- FIG. 23 is a diagram showing an example of the hardware configuration of the terminal 10 and the base station 20 according to the present embodiment.
- the terminal 10 and the base station 20 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. ..
- the word “device” can be read as a circuit, device, unit, etc.
- the hardware configuration of the terminal 10 and the base station 20 may be configured to include one or more of the devices shown in 1001 to 1006 shown in the figure, or may be configured not to include some of the devices. May be good.
- the processor 1001 For each function of the terminal 10 and the base station 20, the processor 1001 performs calculations by loading predetermined software (programs) on hardware such as the processor 1001 and the memory 1002, and controls communication by the communication device 1004. , It is realized by controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.
- the processor 1001 operates, for example, an operating system to control the entire computer.
- the processor 1001 may be configured by a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like.
- CPU Central Processing Unit
- the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these.
- a program program code
- the control unit 130 of the terminal 10 may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and may be realized in the same manner for other functional blocks.
- the above-mentioned various processes have been described as being executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001.
- Processor 1001 may be implemented by one or more chips.
- the program may be transmitted from the network via a telecommunication line.
- the memory 1002 is a computer-readable recording medium, and is composed of at least one such as a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). May be done.
- the memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
- the memory 1002 can store a program (program code), a software module, or the like that can be executed to implement the wireless communication method according to the embodiment of the present disclosure.
- the storage 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a photomagnetic disk (for example, a compact disk, a digital versatile disk, or a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like.
- the storage 1003 may be referred to as an auxiliary storage device.
- the storage medium described above may be, for example, a database, server or other suitable medium containing at least one of memory 1002 and storage 1003.
- the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
- the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). It may be composed of.
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside.
- the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside.
- the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
- each device such as the processor 1001 and the memory 1002 is connected by the bus 1007 for communicating information.
- the bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.
- the terminal 10 and the base station 20 are hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array), respectively. It may be configured to include hardware, and a part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these hardware.
- the time domain resource for transmitting the random access preamble included in the default setting information for transmitting the random access preamble is the time domain for transmitting the downlink in other communication systems. It is possible to set the resource in the time domain for transmitting the random access preamble to the resource in the other time domain specified by the additional information when it overlaps with the timing of the resource in.
- Other communication systems by sending random access preambles by matching the time domain resources specified by the additional information with the timing of the time domain resources for uplink transmissions in other communication systems. It is possible to reduce the influence of interference with the system.
- the time domain resource for transmitting the random access preamble may be a resource in units of subframes, and the additional information includes the subframe number for transmitting the random access preamble, and the subframe number. Any one of the offset values between the subframe number specified by the setting information and the subframe number that can actually transmit the random access preamble may be specified.
- the control unit receives a time domain for transmitting the random access preamble specified by the index. Resources may be replaced with resources in the time domain specified by the additional information.
- the legacy terminal does not read the alternative index and reads only the normal index. Therefore, different PRACH Configuration Indexes are applied to the legacy terminal and the terminal corresponding to the above configuration. This makes it possible for legacy terminals to coexist with terminals that support the above configuration.
- the index that specifies the configuration information for transmitting the random access preamble is a first set of one or more indexes that specifies the default configuration information and a second of the one or more indexes that specifies additional configuration information. If the second set includes an index that specifies setting information for transmitting the random access preamble, the control unit may include the index in any one of the sets. The additional setting information specified by may be set.
- the table for specifying the default setting of random access and the subframe corresponding to the default setting of the random access and capable of sending the random access preamble are specified in the default setting. It is possible to specify a new table in which subframes that cannot be specified can be specified, and apply the random access settings specified in the new table to the terminal.
- the time domain resource specified by the additional information may be a resource at the same timing as the time domain resource for uplink transmission of another communication system. According to this configuration, it is possible to reduce the influence of interference on other communication systems due to the transmission of the random access preamble.
- the time domain resource for transmitting the random access preamble included in the default setting information for transmitting the random access preamble is the time domain for transmitting the downlink in other communication systems. It is possible to set the resource in the time domain for transmitting the random access preamble to the resource in the other time domain specified by the additional information when it overlaps with the timing of the resource in.
- Other communication systems by sending random access preambles by matching the time domain resources specified by the additional information with the timing of the time domain resources for uplink transmissions in other communication systems. It is possible to reduce the influence of interference with the system.
- the boundary of the functional unit or the processing unit in the functional block diagram does not always correspond to the boundary of the physical component.
- the operation of the plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by a plurality of components. With respect to the processing procedure described in the embodiment, the order of processing may be changed as long as there is no contradiction.
- the terminal 10 and the base station 20 have been described with reference to functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof.
- the software operated by the processor of the terminal 10 according to the embodiment of the present invention and the software operated by the processor of the base station 20 according to the embodiment of the present invention are random access memory (RAM), flash memory, and read-only memory, respectively. It may be stored in (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
- information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. It may be carried out by notification information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
- RRC signaling may be called an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration) message, or the like.
- Each aspect / embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), and 5G (5th generation mobile communication).
- system FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)) )), LTE 802.16 (WiMAX®), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth®, and other systems that utilize suitable systems and have been extended based on these. It may be applied to at least one of the next generation systems. Further, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
- the specific operation performed by the base station 20 in the present disclosure may be performed by its upper node (upper node).
- upper node In a network consisting of one or more network nodes having a base station 20, various operations performed for communication with a terminal are performed by the base station 20 and other network nodes other than the base station 20 (for example,). , MME, S-GW, and the like, but not limited to these).
- MME Mobility Management Entity
- S-GW Serving Mobility Management Entity
- the input / output information and the like may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information and the like can be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.
- the determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).
- the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is implicitly (for example, the notification of the predetermined information is not performed). May be good.
- Software is an instruction, instruction set, code, code segment, program code, program, subprogram, software module, whether called software, firmware, middleware, microcode, hardware description language, or another name.
- Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted to mean.
- software, instructions, information, etc. may be transmitted and received via a transmission medium.
- a transmission medium For example, a website that uses at least one of wired technology (coaxial cable, fiber optic cable, twist pair, digital subscriber line (DSL: Digital Subscriber Line), etc.) and wireless technology (infrared, microwave, etc.) When transmitted from a server, or other remote source, at least one of these wired and wireless technologies is included within the definition of transmission medium.
- the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
- At least one of a channel and a symbol may be a signal (signaling).
- the signal may be a message.
- system and “network” used in this disclosure are used interchangeably.
- information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented.
- the radio resource may be one indicated by an index.
- base station Base Station
- wireless base station fixed station
- NodeB NodeB
- eNodeB eNodeB
- gNodeB gNodeB
- Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
- the base station can accommodate one or more (for example, three) cells.
- a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH:)).
- Communication services can also be provided by (Remote Radio Head).
- the term "cell” or “sector” is a part or all of the coverage area of at least one of the base station and the base station subsystem that provides the communication service in this coverage. Point to.
- MS Mobile Station
- UE User Equipment
- Mobile stations can be subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless, depending on the trader. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
- At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a terminal, or the like. At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like.
- the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
- at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
- at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be read by the user terminal.
- the communication between the base station and the user terminal is replaced with the communication between a plurality of user terminals (for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.).
- D2D Device-to-Device
- V2X Vehicle-to-Everything
- Each aspect / embodiment of the present disclosure may be applied to the configuration.
- the user terminal 10 may have the function of the base station 20 described above.
- words such as "up” and “down” may be read as words corresponding to communication between terminals (for example, "side”).
- the upstream channel, the downstream channel, and the like may be read as a side channel.
- the user terminal in the present disclosure may be read as a base station.
- the base station 20 may have the functions of the user terminal 10 described above.
- connection means any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two “connected” or “combined” elements.
- the connection or connection between the elements may be physical, logical, or a combination thereof.
- connection may be read as "access”.
- the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain. Can be considered to be “connected” or “coupled” to each other using electromagnetic energies having wavelengths in the microwave and light (both visible and invisible) regions.
- the reference signal may be abbreviated as RS (Reference Signal), and may be called a pilot depending on the applicable standard.
- the radio frame may be composed of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe. Subframes may further consist of one or more slots in the time domain.
- the subframe may have a fixed time length (eg, 1 ms) that is independent of numerology.
- the numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel.
- Numerology includes, for example, subcarrier spacing (SCS: SubCarrier Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transition Time Interval), number of symbols per TTI, wireless frame configuration, transmission / reception.
- SCS subcarrier spacing
- TTI Transmission Time Interval
- At least one of a specific filtering process performed by the machine in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.
- the slot may be composed of one or more symbols in the time domain (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.). Slots may be unit of time based on numerology.
- OFDM Orthogonal Frequency Division Multiplexing
- SC-FDMA Single Carrier Frequency Division Multiple Access
- the slot may include a plurality of mini slots. Each minislot may consist of one or more symbols in the time domain. Further, the mini slot may be called a sub slot. A minislot may consist of a smaller number of symbols than the slot.
- a PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as a PDSCH (or PUSCH) mapping type A.
- the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.
- the wireless frame, subframe, slot, mini slot and symbol all represent the time unit when transmitting a signal.
- the radio frame, subframe, slot, minislot and symbol may have different names corresponding to each.
- one subframe may be referred to as a transmission time interval (TTI)
- TTI transmission time interval
- TTI transmission time interval
- TTI transmission time interval
- TTI transmission time interval
- a plurality of consecutive subframes may be referred to as TTI
- TTI slot or one minislot
- You may. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms. It may be.
- the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
- TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
- the base station schedules each user terminal to allocate radio resources (frequency bandwidth that can be used in each user terminal, transmission power, etc.) in TTI units.
- the definition of TTI is not limited to this.
- the TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
- the time interval for example, the number of symbols
- the transport block, code block, code word, etc. may be shorter than the TTI.
- one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
- a TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
- TTIs shorter than normal TTIs may be referred to as shortened TTIs, short TTIs, partial TTIs (partial or fractional TTIs), shortened subframes, short subframes, minislots, subslots, slots and the like.
- the long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms, and the short TTI (for example, shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.
- the resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
- the number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12.
- the number of subcarriers contained in the RB may be determined based on numerology.
- the time domain of RB may include one or more symbols, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI.
- Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
- One or more RBs include a physical resource block (PRB: Physical RB), a subcarrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, and the like. May be called.
- PRB Physical resource block
- SCG Sub-Carrier Group
- REG Resource Element Group
- PRB pair an RB pair, and the like. May be called.
- the resource block may be composed of one or a plurality of resource elements (RE: Resource Elements).
- 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
- the bandwidth portion (BWP: Bandwidth Part) (which may also be referred to as partial bandwidth) may represent a subset of consecutive common RBs (common resources blocks) for a certain neurology in a carrier. Good.
- the common RB may be specified by the index of the RB with respect to the common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within that BWP.
- the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
- UL BWP UL BWP
- DL BWP DL BWP
- One or more BWPs may be set in one carrier for the UE.
- At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP.
- “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
- the above-mentioned structures such as wireless frames, subframes, slots, mini slots and symbols are merely examples.
- the number of subframes contained in a wireless frame the number of slots per subframe or wireless frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in the RB.
- the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and the like can be changed in various ways.
- the term "A and B are different” may mean “A and B are different from each other”.
- the term may mean that "A and B are different from C”.
- Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
- Terminal 110 Transmitter 120 Receiver 130 Control 20
- Base station 210 Transmitter 220 Receiver 230
- Control 1001 Processor 1002 Memory
- Storage 1004 Communication device
- Input device 1006 Output device
Abstract
Description
図1に本実施の形態に係る無線通信システムの構成図を示す。本実施の形態に係る無線通信システムは、図1に示すように、端末(ユーザ装置)10、及び基地局20を含む。図1には、端末10、及び基地局20が1つずつ示されているが、これは例であり、それぞれ複数であってもよい。
図2を参照して、本実施の形態におけるランダムアクセス手順の例を説明する。図2に示す手順を初期アクセスと呼んでもよい。
TDD-UL-DL-patternのdl-UL-TransmissionPeriodicityは、3GPPのリリース15仕様の策定当初は、0.5ms、0.625ms、1ms、1.25ms、2ms、2.5ms、5ms、10msであった。
図5は、提案1の例を示す図である。提案1の方法では、図3に示されるランダムアクセス設定を指定するテーブルをそのまま使用する(図3に示されるテーブルそのものは変更しない)。例えば、基地局20は、端末10に、図3に示されるテーブルのPRACH Configuration Index0~6のうちのいずれかのインデックスを通知する。さらに、基地局20は、ランダムアクセスプリアンブルの送信機会を指定するサブフレーム番号をRRCシグナリングで端末10に対して通知する。端末10は、図3に示されるテーブルで指定されるサブフレーム番号は適用せず、基地局20から受信したサブフレーム番号をランダムアクセスプリアンブルの送信機会として適用する。
図8は、提案2の例を示す図である。提案2の方法では、図3に示されるランダムアクセス設定を指定するテーブルをそのまま使用する(図3に示されるテーブルそのものは変更しない)。例えば、基地局20は、端末10に、図3に示されるテーブルのPRACH Configuration Index0~6のうちのいずれかのインデックスを通知する。さらに、基地局20は、図3のテーブルで指定されるサブフレームの番号と、実際にランダムアクセスプリアンブルを送信することが可能とされているサブフレームの番号との間のオフセットをRRCシグナリングで端末10に対して通知する。端末10は、図3に示されるテーブルで指定されるサブフレーム番号に対してオフセット値を加算した値に対してmodulo10演算を適用して得られた番号を、ランダムアクセスプリアンブルを送信することが可能なサブフレームの番号として設定する。
基地局20が端末10に対して、図3に示されるPRACH Configuration Index0~6のいずれかを設定しようとする場合において、サブフレーム番号だけを、4又は9に代えて、2又は7に設定しようとする場合を想定して、図3に示されるPRACH Configuration Indexとは異なるインデックスとして、例えば、PRACH Configuration IndexAltが定義されてもよい。基地局20は、PRACH Configuration IndexAltとして0~6のうちの何れかの値を設定した上で、端末10に対して、PRACH Configuration IndexAltをRRCシグナリングで通知してもよい。その上で、基地局20は端末10に対して、サブフレーム番号2又は7をRRCシグナリングで通知してもよい。この場合、図3の表自体は変更せずに、図3に示されるPRACH Configuration Index0~6のいずれかに相当するランダムアクセスのリソースの設定を行いつつ、ランダムアクセスプリアンブルを送信可能なサブフレームの番号だけを、例えば、4又は9に代えて、2又は7に設定することが可能になる。このように、新たなパラメータであるPRACH Configuration IndexAltを定義した場合、レガシー端末は、PRACH Configuration IndexAltを読み込まず、PRACH Configuration Indexのみを読み込むため、レガシー端末と提案3の方法に対応する端末10とに対して、それぞれ異なるPRACH Configuration Indexを適用することが可能となり、レガシー端末と提案3の方法に対応する端末10との共存が可能となる。
基地局20が端末10に対して、図3に示されるPRACH Configuration Index0~6のいずれかを設定しようとする場合において、サブフレーム番号だけを、4又は9に代えて、2又は7に設定しようとする場合を想定して、図3に示されるPRACH Configuration Indexとは異なるインデックスとして、例えば、PRACH Configuration IndexAltが定義されてもよい。基地局20は、PRACH Configuration IndexAltとして0~6のうちの何れかの値を設定した上で、端末10に対して、PRACH Configuration IndexAltをRRCシグナリングで通知してもよい。その上で、基地局20は、図3のテーブルで指定されるサブフレームの番号と、実際にランダムアクセスプリアンブルを送信することが可能とされているサブフレームの番号との間のオフセットをRRCシグナリングで端末10に対して通知する。この場合、図3の表自体は変更せずに、図3に示されるPRACH Configuration Index0~6のいずれかに相当するランダムアクセスのリソースの設定を行いつつ、ランダムアクセスプリアンブルを送信可能なサブフレームの番号だけを、4又は9に代えて、2又は7に設定することが可能になる。このように、新たなパラメータであるPRACH Configuration IndexAltを定義した場合、レガシー端末は、PRACH Configuration IndexAltを読み込まず、PRACH Configuration Indexのみを読み込むため、レガシー端末と提案3の方法に対応する端末10とに対して、それぞれ異なるPRACH Configuration Indexを適用することが可能となり、レガシー端末と提案3の方法に対応する端末10との共存が可能となる。
図3に示されるFR1かつTDDの場合のランダムアクセス設定のテーブルを拡張して、図3に示されるPRACH Configuration Index0~6のいずれかに対応しており、かつサブフレーム番号だけが、4又は9に代えて、2又は7となっているPRACH Configuration Indexを追加してもよい。図15は、提案5の例を示す図である。図15に示されるテーブルには、PRACH Configuration Indexとして、256~271が追加されており、Index256~269のうちのいずれ
かにより、PRACH Configuration Index0~6のいずれかに対応しており、かつサブフレーム番号だけが、4又は9に代えて、2又は7となっているランダムアクセスの設定を指定することが可能とされている。また、基地局20が、端末10に対して、PRACH Configuration Indexを通知する際に使用することが可能なRACH-ConfigGeneric情報要素において、256以上の値のPRACH Configuration Indexを通知することができるようにするための拡張が行われてもよい。
図18は、提案6の例を示す図である。提案6の方法では、図3に示されるランダムアクセス設定を指定するテーブルに対応し、かつランダムアクセスプリアンブルを送信可能なサブフレームとしてサブフレーム番号2又は7を指定可能なテーブルを新たに規定する。図18に示されるテーブルでは、図3に示されるPRACH Configuration Indexに対応し、かつサブフレーム番号2を指定可能なインデックス0~6、及び図3に示されるPRACH Configuration Indexに対応し、かつサブフレーム番号7を指定可能なインデックス7~13が規定されている。
次に、これまでに説明した処理動作を実行する端末10及び基地局20の機能構成例を説明する。端末10及び基地局20は、本実施の形態で説明した全ての機能を備えている。ただし、端末10及び基地局20は、本実施の形態で説明した全ての機能のうちの一部のみの機能を備えてもよい。なお、端末10及び基地局20を総称して通信装置と称してもよい。
図21は、端末10の機能構成の一例を示す図である。図21に示されるように、端末10は、送信部110と、受信部120と、制御部130と、を有する。図21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。なお、送信部110を送信機と称し、受信部120を受信機と称してもよい。
図22は、基地局20の機能構成の一例を示す図である。図22に示されるように、基地局20は、送信部210と、受信部220と、制御部230と、を有する。図22に示される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。なお、送信部210を送信機と称し、受信部220を受信機と称してもよい。
上記実施の形態の説明に用いたブロック図(図21~図22)は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及びソフトウェアの少なくとも一方の任意の組み合わせによって実現される。また、各機能ブロックの実現方法は特に限定されない。すなわち、各機能ブロックは、物理的又は論理的に結合した1つの装置を用いて実現されてもよいし、物理的又は論理的に分離した2つ以上の装置を直接的又は間接的に(例えば、有線、無線などを用いて)接続し、これら複数の装置を用いて実現されてもよい。機能ブロックは、上記1つの装置又は上記複数の装置にソフトウェアを組み合わせて実現されてもよい。機能には、判断、決定、判定、計算、算出、処理、導出、調査、探索、確認、受信、送信、出力、アクセス、解決、選択、選定、確立、比較、想定、期待、見做し、報知(broadcasting)、通知(notifying)、通信(communicating)、転送(forwarding)、構成(configuring)、再構成(reconfiguring)、割り当て(allocating、mapping)、割り振り(assigning)などがあるが、これらに限られない。たとえば、送信を機能させる機能ブロック(構成部)は、送信部(transmitting unit)や送信機(transmitter)と呼称される。いずれも、上述したとおり、実現方法は特に限定されない。
本明細書には、少なくとも下記の端末及び通信方法が開示されている。
以上、本発明の実施の形態を説明してきたが、開示される発明はそのような実施形態に限定されず、当業者は様々な変形例、修正例、代替例、置換例等を理解するであろう。発明の理解を促すため具体的な数値例を用いて説明がなされたが、特に断りのない限り、それらの数値は単なる一例に過ぎず適切な如何なる値が使用されてもよい。上記の説明における項目の区分けは本発明に本質的ではなく、2以上の項目に記載された事項が必要に応じて組み合わせて使用されてよいし、ある項目に記載された事項が、別の項目に記載された事項に(矛盾しない限り)適用されてよい。機能ブロック図における機能部又は処理部の境界は必ずしも物理的な部品の境界に対応するとは限らない。複数の機能部の動作が物理的には1つの部品で行われてもよいし、あるいは1つの機能部の動作が物理的には複数の部品により行われてもよい。実施の形態で述べた処理手順については、矛盾の無い限り処理の順序を入れ替えてもよい。処理説明の便宜上、端末10と基地局20は機能的なブロック図を用いて説明されたが、そのような装置はハードウェアで、ソフトウェアで又はそれらの組み合わせで実現されてもよい。本発明の実施の形態に従って端末10が有するプロセッサにより動作するソフトウェア及び本発明の実施の形態に従って基地局20が有するプロセッサにより動作するソフトウェアはそれぞれ、ランダムアクセスメモリ(RAM)、フラッシュメモリ、読み取り専用メモリ(ROM)、EPROM、EEPROM、レジスタ、ハードディスク(HDD)、リムーバブルディスク、CD-ROM、データベース、サーバその他の適切な如何なる記憶媒体に保存されてもよい。
時間領域において1つ又は複数の各フレームはサブフレームと呼ばれてもよい。
サブフレームは更に時間領域において1つ又は複数のスロットによって構成されてもよい。サブフレームは、ニューメロロジー(numerology)に依存しない固定の時間長(例えば、1ms)であってもよい。
110 送信部
120 受信部
130 制御部
20 基地局
210 送信部
220 受信部
230 制御部
1001 プロセッサ
1002 メモリ
1003 ストレージ
1004 通信装置
1005 入力装置
1006 出力装置
Claims (6)
- ランダムアクセスプリアンブルを送信するための設定情報を指定するインデックスを受信する受信部と、
前記受信部が前記ランダムアクセスプリアンブルを送信するための時間領域のリソースを指定する追加的な情報を受信した場合に、前記インデックスにより指定される前記設定情報に含まれる前記ランダムアクセスプリアンブルを送信するための時間領域のリソースを、前記追加的な情報により指定される時間領域のリソースに置き換えて設定する、制御部と、
を備える、端末。 - 前記ランダムアクセスプリアンブルを送信するための時間領域のリソースは、サブフレームを単位とするリソースであり、
前記追加的な情報は、前記ランダムアクセスプリアンブルを送信するためのサブフレームの番号、及び前記設定情報により指定されるサブフレームの番号と実際に前記ランダムアクセスプリアンブルを送信可能なサブフレームの番号との間のオフセット値のうちのいずれか1つを指定する、
請求項1に記載の端末。 - 前記受信部が前記ランダムアクセスプリアンブルを送信するための設定情報を指定する代替的なインデックスを受信した場合に、前記制御部は、前記インデックスにより指定される前記ランダムアクセスプリアンブルを送信するための時間領域のリソースを、前記追加的な情報により指定される時間領域のリソースに置き換えて設定する、
請求項1に記載の端末。 - 前記ランダムアクセスプリアンブルを送信するための設定情報を指定するインデックスは、デフォルトの設定情報を指定する1又は複数のインデックスの第1のセット及び追加の設定情報を指定する1又は複数のインデックスの第2のセットのうち、いずれか1つのセットに含まれ、
前記ランダムアクセスプリアンブルを送信するための設定情報を指定するインデックスが前記第2のセットに含まれる場合、前記制御部は、前記インデックスにより指定される前記追加の設定情報を設定する、
請求項1に記載の端末。 - 前記追加的な情報により指定される時間領域のリソースは、他の通信システムの上りリンクの送信のための時間領域のリソースと同じタイミングのリソースである、
請求項1に記載の端末。 - ランダムアクセスプリアンブルを送信するための設定情報を指定するインデックスを受信するステップと、
前記ランダムアクセスプリアンブルを送信するための時間領域のリソースを指定する追加的な情報を受信した場合に、前記インデックスにより指定される前記設定情報に含まれる前記ランダムアクセスプリアンブルを送信するための時間領域のリソースを、前記追加的な情報により指定される時間領域のリソースに置き換えて設定するステップと、
を備える、端末による通信方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021530402A JP7343582B2 (ja) | 2019-07-09 | 2019-07-09 | 端末、基地局及び送信方法 |
US17/624,478 US20220361248A1 (en) | 2019-07-09 | 2019-07-09 | Terminal and transmission method |
EP19936690.7A EP3998812A4 (en) | 2019-07-09 | 2019-07-09 | TERMINAL AND ISSUANCE METHOD |
CA3142678A CA3142678A1 (en) | 2019-07-09 | 2019-07-09 | Terminal and transmission method |
CN201980098185.5A CN114073149A (zh) | 2019-07-09 | 2019-07-09 | 终端以及发送方法 |
PCT/JP2019/027173 WO2021005716A1 (ja) | 2019-07-09 | 2019-07-09 | 端末及び送信方法 |
BR112021026234A BR112021026234A2 (pt) | 2019-07-09 | 2019-07-09 | Terminal, estação base e método de comunicação executado por um terminal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2019/027173 WO2021005716A1 (ja) | 2019-07-09 | 2019-07-09 | 端末及び送信方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021005716A1 true WO2021005716A1 (ja) | 2021-01-14 |
Family
ID=74114992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2019/027173 WO2021005716A1 (ja) | 2019-07-09 | 2019-07-09 | 端末及び送信方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20220361248A1 (ja) |
EP (1) | EP3998812A4 (ja) |
JP (1) | JP7343582B2 (ja) |
CN (1) | CN114073149A (ja) |
BR (1) | BR112021026234A2 (ja) |
CA (1) | CA3142678A1 (ja) |
WO (1) | WO2021005716A1 (ja) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012525083A (ja) * | 2009-04-23 | 2012-10-18 | インターデイジタル パテント ホールディングス インコーポレイテッド | マルチキャリアワイヤレス通信におけるランダムアクセスのための方法および機器 |
-
2019
- 2019-07-09 CN CN201980098185.5A patent/CN114073149A/zh active Pending
- 2019-07-09 JP JP2021530402A patent/JP7343582B2/ja active Active
- 2019-07-09 US US17/624,478 patent/US20220361248A1/en active Pending
- 2019-07-09 CA CA3142678A patent/CA3142678A1/en active Pending
- 2019-07-09 EP EP19936690.7A patent/EP3998812A4/en active Pending
- 2019-07-09 WO PCT/JP2019/027173 patent/WO2021005716A1/ja active Application Filing
- 2019-07-09 BR BR112021026234A patent/BR112021026234A2/pt unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012525083A (ja) * | 2009-04-23 | 2012-10-18 | インターデイジタル パテント ホールディングス インコーポレイテッド | マルチキャリアワイヤレス通信におけるランダムアクセスのための方法および機器 |
Non-Patent Citations (6)
Title |
---|
"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Physical channels and modulation (Release 15)", 3GPP TS 38.211, vol. 6.3.3.2, 24 June 2019 (2019-06-24), pages 40 - 59, XP051751275 * |
3GPP TS36.211, June 2019 (2019-06-01) |
3GPP TS38.211, June 2019 (2019-06-01) |
3GPP TSG-RAN WG2 MEETING #103, R2-1813303,GOTHENBURG,SWEDEN, 20 August 2018 (2018-08-20) |
3GPP TSG-RAN WG2 MEETING NR ADHOC 1807,R2-1810963,MONTREAL,CANADA, 2 July 2018 (2018-07-02) |
3GPP TSG-RAN WG2#103,R2-1813279, GOTHENBURG,SWEDEN |
Also Published As
Publication number | Publication date |
---|---|
EP3998812A1 (en) | 2022-05-18 |
CN114073149A (zh) | 2022-02-18 |
EP3998812A4 (en) | 2023-01-25 |
CA3142678A1 (en) | 2021-01-14 |
BR112021026234A2 (pt) | 2022-02-15 |
JPWO2021005716A1 (ja) | 2021-01-14 |
JP7343582B2 (ja) | 2023-09-12 |
US20220361248A1 (en) | 2022-11-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2020194760A1 (ja) | ユーザ装置及び基地局装置 | |
WO2021059413A1 (ja) | 端末、基地局及び通信方法 | |
WO2020230201A1 (ja) | ユーザ装置及び基地局装置 | |
WO2021149246A1 (ja) | 端末、基地局及び通信方法 | |
JP7073529B2 (ja) | 端末、基地局及び通信方法 | |
WO2021149110A1 (ja) | 端末及び通信方法 | |
WO2021140674A1 (ja) | 端末及び通信方法 | |
WO2022149223A1 (ja) | 端末、基地局及び通信方法 | |
WO2021064875A1 (ja) | 端末及び送信方法 | |
WO2021038920A1 (ja) | 端末、基地局及び通信方法 | |
WO2020246185A1 (ja) | 端末及び基地局 | |
WO2021140673A1 (ja) | 端末及び通信方法 | |
WO2021044598A1 (ja) | 端末及び通信方法 | |
WO2021029049A1 (ja) | 端末及び通信方法 | |
WO2020194638A1 (ja) | ユーザ装置及び基地局装置 | |
WO2020194746A1 (ja) | ユーザ装置及び基地局装置 | |
WO2020217366A1 (ja) | ユーザ装置 | |
WO2020157986A1 (ja) | ユーザ装置及び基地局装置 | |
WO2021075436A1 (ja) | 端末及び通信方法 | |
WO2021005716A1 (ja) | 端末及び送信方法 | |
JPWO2020170445A1 (ja) | ユーザ装置及び基地局装置 | |
WO2022074729A1 (ja) | 通信装置 | |
WO2020230623A1 (ja) | ユーザ装置及び基地局装置 | |
WO2021214894A1 (ja) | 端末及び通信方法 | |
WO2022044558A1 (ja) | 端末、基地局及び通信方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19936690 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2021530402 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 3142678 Country of ref document: CA |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112021026234 Country of ref document: BR |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2019936690 Country of ref document: EP Effective date: 20220209 |
|
ENP | Entry into the national phase |
Ref document number: 112021026234 Country of ref document: BR Kind code of ref document: A2 Effective date: 20211223 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 522431299 Country of ref document: SA |