WO2022213642A1 - 一种带宽部分的激活方法和配置方法及电子设备 - Google Patents
一种带宽部分的激活方法和配置方法及电子设备 Download PDFInfo
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- WO2022213642A1 WO2022213642A1 PCT/CN2021/136144 CN2021136144W WO2022213642A1 WO 2022213642 A1 WO2022213642 A1 WO 2022213642A1 CN 2021136144 W CN2021136144 W CN 2021136144W WO 2022213642 A1 WO2022213642 A1 WO 2022213642A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0457—Variable allocation of band or rate
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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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
- H04L5/0091—Signaling for the administration of the divided path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
Definitions
- the present application relates to the technical field of terminals, and in particular, to a method for activating and configuring a bandwidth part, and an electronic device.
- next-generation wireless communication system only supports non-narrowband user equipment (user equipment, UE), for example, a UE with a bandwidth of 100 MHz.
- UE user equipment
- Narrowband UE Reduced Capability UE, or RedCap UE
- MTC Machine Type Communication
- IoT Internet of Things
- the narrowband UE In the existing protocol or standard, there are only non-narrowband UEs in the default cell of the base station, that is, UEs with a bandwidth of 100 MHz.
- the narrowband UE obtains the MIB (Master Information Block), then obtains the frequency position of the initial downlink bandwidth part (Initial DL Bandwidth Part), and then obtains the SIB1.
- the narrowband UE obtains the reconfigured frequency position of the initial downlink bandwidth part according to the SIB1. Further, the narrowband UE obtains the frequency position of the initial uplink bandwidth part (Initial UL Bandwidth Part).
- the reconfigured bandwidth of the initial downlink bandwidth part may be larger than the downlink bandwidth of the narrowband UE, and the reconfigured bandwidth of the initial uplink bandwidth part may also be larger than the uplink bandwidth of the narrowband UE (because the base station does not know that the narrowband UE exists in the cell), so As a result, the narrowband UE cannot access the network.
- a first aspect provides a method for activating a bandwidth part, which is applied to a UE, and the method includes:
- the first bandwidth part includes a first downlink bandwidth part and/or a first uplink bandwidth part
- the second bandwidth part includes a second downlink bandwidth part and/or a second uplink bandwidth part
- the determining to use the reconfigured first bandwidth portion, or determining to use the second bandwidth portion includes:
- the determining to use the reconfigured first bandwidth part includes:
- a hybrid automatic retransmission request-acknowledgment feedback Msg4-HARQ-ACK of message 3Msg3 or message 4 is sent.
- the determining to use the second bandwidth portion includes:
- the Msg3 or Msg4-HARQ-ACK is sent within the second uplink bandwidth portion.
- the reconfigured first uplink bandwidth portion and the reconfigured first downlink bandwidth portion are activated or used after Msg1 is sent.
- the second uplink bandwidth part and the second downlink bandwidth part are activated or used after the Msg1 is sent.
- the determining to use the reconfigured first bandwidth part includes:
- the messages 1Msg1, Msg3 or Msg4-HARQ-ACK are sent within the reconfigured first uplink bandwidth portion.
- the determining to use the second bandwidth portion includes:
- the reconfigured first downlink bandwidth portion is activated or used after the Msg1 is sent.
- the second downlink bandwidth portion is activated or used after the Msg1 is sent.
- the determining to use the reconfigured first bandwidth part includes:
- the determining to use the second bandwidth portion includes:
- the Msg3 or Msg4-HARQ-ACK is sent within the second uplink bandwidth portion.
- the reconfigured first uplink bandwidth portion is activated or used after Msg1 is sent.
- the second uplink bandwidth portion is activated or used after the Msg1 is sent.
- the first type of message includes at least one of SIB1, OSI, or Paging.
- the present application provides a method for configuring a bandwidth part, which is applied to a UE, including:
- the configuration of the first downlink bandwidth part is determined, and/or the configuration of the resources in the first uplink bandwidth part and/or the first downlink bandwidth part is determined.
- the determining the configuration of the first downlink bandwidth part includes:
- the determining that the reconfigured frequency location does not take effect includes:
- the use of the frequency position of CORESET0 as the frequency position of the downlink bandwidth part includes:
- the frequency position of CORESET0 is used as the frequency position of the downstream bandwidth part.
- the determining of the configuration of resources in the first uplink bandwidth part and/or the first downlink bandwidth part includes:
- Msg3's resources are not expected to be outside of CORESET0.
- the determining of the configuration of resources in the first uplink bandwidth part and/or the first downlink bandwidth part includes:
- Msg1 carries the first indication, the configuration of resources in the first uplink bandwidth part.
- the first indication is an indication that the UE is a narrowband UE.
- the determining of the configuration of resources in the first uplink bandwidth part and/or the first downlink bandwidth part includes:
- the resources for Msg4-HARQ-ACK are not expected to be outside CORESET0.
- the determining of the configuration of resources in the first uplink bandwidth part and/or the first downlink bandwidth part includes:
- Msg1 or Msg3 carries the second indication, determine the configuration of resources in the first uplink bandwidth part.
- the second indication is an indication that the UE is a narrowband UE.
- the determining of the configuration of resources in the first uplink bandwidth part and/or the first downlink bandwidth part includes:
- the determining of the configuration of resources in the first uplink bandwidth part and/or the first downlink bandwidth part includes:
- an apparatus for activating a bandwidth part comprising a determining module configured to determine to use the reconfigured first bandwidth part, or to determine to use the second bandwidth part.
- an apparatus for configuring a bandwidth portion includes a determining module configured to determine the configuration of the first downlink bandwidth portion, and/or, determine the first uplink bandwidth portion and/or the resource in the first downlink bandwidth portion. configuration.
- a chip module comprising the activation device of claim 31 .
- a chip module comprising the configuration device of claim 32 .
- an electronic device in a seventh aspect, is provided, the electronic device further includes a processor and a storage device, the storage device stores an application program or a program instruction, and the application program or the program instruction is executed by the processor At the time, the electronic device is caused to execute the activation method described in the first aspect.
- an electronic device further includes a processor and a storage device, the storage device stores application programs or program instructions, and the application programs or the program instructions are executed by the processor At the time, the electronic device is caused to execute the configuration method described in the second aspect. Based on the solution shown in this application, resource segmentation can be avoided and radio frequency adjustment can be reduced.
- FIG. 1 provides a flowchart of a method for activating a bandwidth part according to an embodiment of the present application
- FIG. 2 provides a flowchart of a method for configuring a bandwidth part according to an embodiment of the present application
- FIG. 3 provides a schematic structural diagram of a UE according to an embodiment of the present application.
- first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features.
- a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
- plural means two or more.
- the bandwidth part is a segment of continuous frequency resources on the cell carrier, and the network device can configure bandwidth parts with different bandwidth sizes for different UEs.
- the bandwidth part is called the active bandwidth part, and the data and control information sent by the UE in uplink or the data and control information received in downlink will be limited within the active bandwidth section.
- the bandwidth part when a bandwidth part is activated, it can also be said that the UE switches to the bandwidth part.
- a UE is a UE that supports a bandwidth of 100 MHz.
- the UE blindly detects the PSS/SSS/PBCH in the synchronization signal block, and obtains the MIB and time index information carried in the PBCH.
- the UE obtains the configuration of the CORESET (may be called CORESET0) and its search space set (may be called search space set 0) of the scheduling system information block 1 (System Information Block 1, SIB1) through the information in the MIB, and further, the UE can monitor Schedule Type0-PDCCH carrying PDSCH of SIB1, and decode SIB1.
- the maximum bandwidth of CORESET0 is implicitly defined in the protocol. Further, the protocol stipulates that the frequency domain resources of the PDSCH carrying SIB1 are within the bandwidth (PRBs) of CORESET0, so the maximum bandwidth of the PDSCH carrying SIB1 is also implicitly defined in the protocol.
- the UE works in the initial active downlink bandwidth part (Initial Active Downlink Bandwidth Part), the frequency domain position of the initial active downlink bandwidth part is the same as the frequency domain position of CORESET0 by default (non-default, the initial active).
- the frequency domain position of the downlink bandwidth part can be modified to cover the frequency domain position of CORESET0 through signaling), so the maximum bandwidth of the initially activated downlink bandwidth part is implicitly defined in the protocol.
- the UE receives SIB1, other system information (Other System Information, OSI), paging, etc. within the initially activated downlink bandwidth part.
- Narrowband UE reduced capability UE, or RedCap UE
- MTC Machine Type Communication
- IoT Internet of Things
- MIB configures its frequency position through 4 bits (equivalent to the frequency position of CORESET0), and SIB1 can reconfigure its frequency position (also including control and data channels) configuration), the frequency location configured by SIB1 (configured through the high-level parameter LocationAndBandwidth) takes effect only after Msg4 (message 4).
- SIB1 configures its frequency location (including the configuration of control and data channels), and the frequency location configured by SIB1 (configured through the high-level parameter LocationAndBandwidth) can take effect immediately , for Msg1 (message 1), Msg3 (message 3) and their subsequent operations.
- Scheme 1 a solution based on the independent initial activation of the downlink bandwidth part and the initial activation of the uplink bandwidth part: Specifically, the base station broadcasts the configuration of the initial activation downlink bandwidth part and the initial activation uplink bandwidth part specially used for narrowband UEs in SIB1 (including Frequency location), the bandwidth part dedicated to narrowband UE is also called independent initial activation downlink bandwidth part and initial activation uplink bandwidth part, narrowband UE defaults to configure its own initial The downstream bandwidth part is activated and the upstream bandwidth part is initially activated.
- SIB1 including Frequency location
- Solution 1 can simplify UE implementation, but requires the network to configure independent initial activation downlink bandwidth parts and initial activation uplink bandwidth parts, which complicates network implementation and causes resource fragmentation.
- the narrowband UE still configures its initial activation according to the original (for non-narrowband UE) initial activation downlink bandwidth part and initial activation uplink bandwidth part
- the narrowband UE needs to perform radio frequency adjustment (RF retuning), that is, if the current channel/signal resource (such as the current time slot) falls outside the bandwidth of the narrowband UE, the narrowband UE adjusts the center frequency of the radio frequency to cover the current channel/signal resources.
- RF retuning radio frequency adjustment
- the narrowband UE uses an independent resource configuration (mainly in the frequency domain), that is, the frequency resource position of the channel/signal configured by the base station for the narrowband UE falls within the bandwidth of the narrowband UE.
- Base station configuration that is, the base station configures the same narrowband initially activated downlink bandwidth part and narrowband initially activated uplink bandwidth part for the narrowband UE and the non-narrowband UE.
- Radio frequency adjustment requires the UE to frequently adjust the center frequency of the radio frequency, which is not friendly to the implementation and power consumption of the UE.
- radio frequency adjustment requires a certain time gap (time gap), which makes the behavior of narrowband UE and non-narrowband UE inconsistent, and it is difficult to coexist.
- Narrowband UEs use independent resource configuration (mainly in the frequency domain), and the effect achieved in the frequency domain is similar to the independent initial activation downlink bandwidth part and the initial activation uplink bandwidth part, and there will be independent initial activation downlink bandwidth part and initial activation uplink bandwidth part
- the bandwidth part has similar problems, and the flexibility of time domain resources is less.
- Base station configuration which will affect non-narrowband UEs, and non-narrowband UEs cannot utilize more resources.
- BWP Bandwidth Part
- Step 102 the narrowband UE determines to use the reconfigured first bandwidth part, or determines to use the second bandwidth part.
- the reconfigured first bandwidth portion may be the narrowband UE using the reconfigured first bandwidth portion, or the narrowband UE considers the reconfigured first bandwidth portion to be activated (activated) or active (active), or the first bandwidth portion to be reconfigured by the narrowband UE.
- the reconfiguration of the bandwidth part is effective or available or applicable, or the narrowband UE applies the reconfiguration of the first bandwidth part.
- the bandwidth portion being activated may be equivalent to the UE using the bandwidth portion.
- the use of the second bandwidth portion may be that the narrowband UE uses the second bandwidth portion, or the narrowband UE considers the second bandwidth portion to be activated or active.
- the first bandwidth part includes a first downlink bandwidth part (Downlink Bandwidth Part, DL BWP) and/or a first uplink bandwidth part (Uplink Bandwidth Part, UL BWP), and the second bandwidth part includes a first Two downstream bandwidth parts and/or second upstream bandwidth parts.
- DL BWP Downlink Bandwidth Part
- UL BWP Uplink Bandwidth Part
- the first bandwidth portion includes a first initially activated downlink bandwidth portion and/or a first initially activated uplink bandwidth portion
- the second bandwidth portion includes a second initially activated downlink bandwidth portion and/or a second initially activated uplink bandwidth portion Bandwidth section.
- the first initial activation downlink bandwidth part may be referred to as the first initial downlink bandwidth part (Initial Downlink Bandwidth Part, Initial DL BWP)
- the first initial activation uplink bandwidth part may be referred to as the first initial uplink bandwidth part (Initial Uplink Bandwidth Part).
- the second initial activation downlink bandwidth part may also be referred to as the second initial downlink bandwidth part
- the second initial activation uplink bandwidth part is also referred to as the second initial uplink bandwidth part.
- the following description does not distinguish the first downlink bandwidth part, the first initial activation downlink bandwidth part and the first initial downlink bandwidth part, and does not distinguish the first uplink bandwidth part, the first initial activation uplink bandwidth part and the first initial uplink bandwidth part , the second downlink bandwidth part, the second initially activated downlink bandwidth part and the second initial downlink bandwidth part are not distinguished, and the second uplink bandwidth part, the second initially activated uplink bandwidth part and the second initial uplink bandwidth part are not distinguished.
- the configurations of the first downlink bandwidth part and the first uplink bandwidth part are obtained by the UE after acquiring System Information Block 1 (SIB1), and are activated by default.
- SIB1 System Information Block 1
- the first downlink bandwidth portion and/or the first uplink bandwidth portion may be reconfigured, and at a certain moment, the reconfigured first downlink bandwidth portion and/or the first uplink bandwidth portion may be narrowbanded UE uses; alternatively, the base station can configure the second downlink bandwidth part and/or the second uplink bandwidth part, and at a certain moment, the second downlink bandwidth part and/or the second uplink bandwidth part can be activated, or the first The second downlink bandwidth portion and/or the second uplink bandwidth portion may be used by narrowband UEs.
- the narrowband UE in step 102 determines to use the reconfigured first bandwidth part, or determines to use the second bandwidth part, which can be determined according to higher layer parameters, such as RRC parameters.
- the narrowband UE determines to use the reconfigured first downlink bandwidth part and/or the first uplink bandwidth part according to the high layer parameters.
- the narrowband UE determines to use the second downlink bandwidth part and/or the second uplink bandwidth part according to the high layer parameters.
- the first bandwidth part (the first downlink bandwidth part and the first uplink bandwidth part) is equivalent to the bandwidth part shared by the narrowband UE and the non-narrowband UE before reconfiguration.
- the reconfigured first bandwidth portion is equivalent to the aforementioned bandwidth portion dedicated to the independent (use) of the narrowband UE.
- the second bandwidth portion can be understood as a bandwidth portion independently (used) by the narrowband UE, that is, not shared with the narrowband UE, that is, the second downlink bandwidth portion and the second uplink bandwidth portion are independent (used) bandwidth portions.
- Embodiment 1 in step 102, determining to use the reconfigured first bandwidth part, or determining to use the second bandwidth part, includes:
- the narrowband UE receives the first type of message from the base station in the first downlink bandwidth part before reconfiguration, and the first type of message includes SIB1, OSI, paging and the like.
- the narrowband UE receives SIB1, OSI, and paging in the first downlink bandwidth part (sharing) before reconfiguration.
- SIB1, OSI, and paging the narrowband UE and the non-narrowband UE can share the same resources, and the resources are avoided as much as possible. segmentation.
- the base station cannot know the existence of the non-narrowband UE before receiving the message 1 (Msg1), so it is reasonable for the narrowband UE to use the first downlink bandwidth part (shared) before Msg1. The advantage of this is to avoid resources segmentation.
- the message 1 (Message 1, Msg1) shown in the context of the specification may be a random access preamble (Random access preamble) or a Physical Random Access Channel (PRACH) or a random access preamble transmission ( Random access preamble transmission);
- Message 2 (Message 2, Msg2) can be random access feedback (Random Access Response, RAR) or random access response reception (Random access response reception);
- Message 3 (Message 2, Msg3) can be The Physical Uplink Share Channel (PUSCH) of the RAR uplink scheduling;
- Message 4 (Message 4, Msg4) can be the Physical Downlink Share Channel (PDSCH) with the UE contention resolution identifier;
- the mixed message 4 Automatic repeat request-acknowledgment feedback (Message 4 Hybrid Automatic Repeat request-acknowledgement, Msg4-HARQ-ACK) can be a HARQ-ACK for message 4, or a physical uplink control channel (Physical Uplink Control Channel, PUCCH).
- PUCCH Physical Uplink Control Channel
- RACH Random Access Channel
- the first step is for the UE to send a Physical Random Access Channel (PRACH), also known as message 1;
- PRACH Physical Random Access Channel
- the second step is for the base station to send a Random Access Response (RAR) , also known as message 2;
- RAR Random Access Response
- the third step is that the user equipment sends message 3, which can carry the high-level message of the RRCSetupRequest;
- the fourth step is that the base station 110 sends message 4, and the user equipment can confirm the successful access competition by receiving message 4, that is The base station confirms to accept the random access request of the user equipment (with the user equipment identification code), and the message 4 may carry the high-level message of RRCSetup.
- PRACH Physical Random Access Channel
- RAR Random Access Response
- the fourth step is that the base station 110 sends message 4 and the user equipment can confirm the successful access competition by receiving message 4, that is The base station confirms to accept the random access request of the user equipment (with the user equipment identification code), and the message 4 may carry
- the narrowband UE After receiving the first type of message, the narrowband UE sends Msg1 through the first uplink bandwidth part (shared).
- the base station cannot know the existence of the non-narrowband UE when it is receiving Msg1, so it is reasonable to use the first uplink bandwidth part (shared) for Msg1, which has the advantage of avoiding resource division.
- the narrowband UE starts to use the reconfigured first downlink bandwidth portion, or the narrowband UE starts to use the second downlink bandwidth portion, that is, the second downlink bandwidth portion is activated.
- MSG1 refers to that after the narrowband UE sends Msg1 to the network side device, the network side device includes a base station.
- the narrowband UE may receive Msg2 and/or Msg4 from the network side device within the reconfigured first downlink bandwidth portion or the second downlink bandwidth portion, and the narrowband UE may receive Msg2 and/or Msg4 from the reconfigured first uplink bandwidth portion.
- the bandwidth part or the second downlink bandwidth part sends Msg3 and/or Msg4-HARQ-ACK to the network side device.
- the second upstream bandwidth portion is activated.
- the narrowband UE receives Msg2 and/or Msg4 in the reconfigured first downlink bandwidth portion (standalone) or the (activated) second downlink bandwidth portion (standalone), and receives Msg2 and/or Msg4 in the reconfigured first uplink bandwidth portion (standalone) or
- the (activated) second uplink bandwidth part (independent) sends subsequent Msg3 and/or Msg4-HARQ-ACK in the uplink bandwidth part, so that subsequent operations after Msg1 are all in the independent downlink bandwidth part and uplink bandwidth part (this
- the two bandwidth parts can be aligned with the center frequency points, and neither is larger than the bandwidth of the narrowband UE), which reduces the number of possible radio frequency adjustments.
- radio frequency adjustment from the shared downlink bandwidth part to the shared uplink bandwidth part such as when the shared downlink bandwidth part is not aligned with the center frequency of the random access opportunity (RACH Occasion, RO) frequency resource; from the shared uplink bandwidth part
- RACH Occasion, RO random access opportunity
- There may be one radio frequency adjustment from the part to the independent downlink bandwidth part for example, when the RO frequency resource is not aligned with the center frequency of the independent downlink bandwidth part; there are two radio frequency adjustments in total. This is actually the time point when Msg1 is activated as an independent downstream bandwidth part and upstream bandwidth part.
- Embodiment 2 in step 102, determining to use the reconfigured first bandwidth part, or determining to use the second bandwidth part, includes:
- the narrowband UE receives the first type of messages, such as SIB1, OSI and paging, from the base station within the first downlink bandwidth portion (shared).
- SIB1 SIB1
- OSI OSI
- paging the first type of messages
- the narrowband UE can send Msg1 in the reconfigured first uplink bandwidth part (independent), or send Msg1 in the second uplink bandwidth part (independent), that is, the narrowband UE Msg1 is sent in a separate upstream bandwidth section.
- the base station In order for the narrowband UE to use an independent uplink bandwidth part to send Msg1, the base station needs to configure the RO resource of the narrowband UE in the reconfigured first uplink bandwidth part or the second uplink bandwidth part, which is also reasonable.
- the advantage of this is that the base station can Narrowband UEs and non-narrowband UEs are distinguished by RO resources within different uplink bandwidth parts.
- the narrowband UE starts to use the reconfigured first downlink bandwidth portion, or the narrowband UE starts to use the second downlink bandwidth portion, that is, the reconfigured first downlink bandwidth portion or the second uplink bandwidth portion Activated.
- the reconfigured first upstream bandwidth part or the second upstream bandwidth part is equivalent to being activated after SIB1 is configured. It can be understood that after the Msg1, the narrowband UE sends the Msg1 to the network side device.
- the narrowband UE receives Msg2 and/or Msg4 within the reconfigured first downlink bandwidth portion (standalone) or within the (activated) second downlink bandwidth portion (standalone) and receives Msg2 and/or Msg4 within the reconfigured first uplink bandwidth portion (standalone).
- Msg3 and/or Msg4-HARQ-ACK are sent within the bandwidth part (independent) or the second uplink bandwidth part (independent).
- the subsequent operations of Msg1 are in the independent downlink bandwidth part and uplink bandwidth part (the two bandwidth parts can be aligned with the center frequency, and neither is larger than the bandwidth of the narrowband UE), which reduces the number of possible radio frequency adjustments.
- the embodiment Second there is one less RF adjustment. This is actually the time point when Msg1 is activated as an independent initial activation downlink bandwidth part.
- Embodiment 3 in step 102, determining to use the reconfigured first bandwidth part, or determining to use the second bandwidth part, includes:
- the narrowband UE receives the first type of messages, such as SIB1, OSI and paging, from the base station within the reconfigured first downlink bandwidth portion (independent) or the second downlink bandwidth portion (independent).
- the narrowband UE can use completely independent SIB1, OSI, and paging resources, and has high flexibility.
- Msg1 is sent within the first upstream bandwidth portion.
- the narrowband UE sends Msg1 in the first uplink bandwidth part (shared), and the base station cannot know the existence of the non-narrowband UE when it is receiving Msg1, so it is reasonable to use the shared initial uplink bandwidth part for Msg1, The benefit of this is to avoid resource partitioning.
- the narrowband UE After the narrowband UE sends Msg1 to the network side device, the narrowband UE starts to use the reconfigured first uplink bandwidth part, or starts to use the second uplink bandwidth part, that is, the reconfigured first uplink bandwidth part or the second uplink bandwidth
- the bandwidth section is activated.
- SIB1 For the second upstream bandwidth part, it is activated after SIB1 is configured.
- the narrowband UE receives Msg2 and/or Msg4 within the reconfigured first downlink bandwidth portion (standalone) or within the (activated) second downlink bandwidth portion (standalone) and receives Msg2 and/or Msg4 within the reconfigured first downlink bandwidth portion (standalone).
- the Msg3 and/or Msg4-HARQ-ACK is sent within the upstream bandwidth portion (independent) or within the (active) second upstream bandwidth portion (independent).
- the subsequent operations of Msg1 are all within the independent downlink bandwidth part and the uplink bandwidth part (the second downlink bandwidth part and the second uplink bandwidth part may be aligned with the center frequency, and neither is larger than the bandwidth of the narrowband UE. ), reducing the number of possible RF adjustments.
- radio frequency adjustment from the independent downlink bandwidth part to the shared uplink bandwidth part such as when the shared downlink bandwidth part is not aligned with the center frequency of the random access opportunity (RACH Occasion, RO) frequency resource; from the shared uplink bandwidth part
- RACH Occasion, RO random access opportunity
- There may be one radio frequency adjustment from the part to the independent downlink bandwidth part for example, when the RO frequency resource is not aligned with the center frequency of the independent downlink bandwidth part; there are two radio frequency adjustments in total. This is actually the point in time when Msg1 is activated as an independent upstream bandwidth part.
- the base station configures the same narrowband downlink bandwidth part and narrowband uplink bandwidth part for the narrowband UE and the non-narrowband UE.
- scheme 2 adopts the method of the shared downlink bandwidth part (the first downlink bandwidth part)
- the frequency position of the shared downlink bandwidth part of the reconfiguration (via SIB1) will take effect after Msg4, which will lead to narrowband bandwidth after Msg4.
- the UE will operate within a bandwidth portion larger than the narrowband UE bandwidth. It can be understood that after the Msg4, the UE receives the Msg4 from the network side device, wherein the network side device includes a base station.
- an embodiment of the present application also provides a method for configuring a bandwidth part, including:
- Step 202 the narrowband UE determines the configuration of the first downlink bandwidth part, and/or determines the configuration of the first uplink bandwidth part and/or the resources in the first downlink bandwidth part.
- the first downlink bandwidth portion and the first uplink bandwidth portion shown in this embodiment belong to the shared bandwidth portion.
- Determining the configuration of the first downlink bandwidth portion shown in step 202 may include at least one of the solutions shown in the following embodiments:
- the narrowband UE determines that the frequency location of the reconfigured first downlink bandwidth portion (indicated by the high-layer parameter LocationAndBandwidth) does not take effect, that is, the narrowband UE does not use the reconfigured first downlink bandwidth portion of the frequency location. frequency location.
- the narrowband UE determines to continue to use the frequency position of control resource set 0 (Control Resource Set 0, CORESET0) as the frequency position of the first downlink bandwidth part.
- the narrowband UE determines that the frequency position of the downlink bandwidth part of the dedicated RRC configuration includes CORESET0, or the frequency position of the downlink bandwidth part of the dedicated RRC configuration is equal to CORESET0. It can be understood that after the narrowband UE enters the connected state, the narrowband UE uses the downlink bandwidth part including CORESET0, so that the narrowband UE can use the same resources as in the idle state.
- the restriction on the shared downlink bandwidth part can be realized at the same time, so as to avoid that the narrowband UE will work in a downlink bandwidth part larger than the narrowband UE bandwidth.
- the Msg1 sent by the UE to the network-side device carries the first indication
- the network-side device eg, the base station
- the network-side device can determine whether the UE is a narrowband UE based on the first indication.
- the first indication is used for a network side device (eg, a base station) to be able to identify the narrowband UE in advance (before the UE capability is reported), and may be referred to as an early identification indication.
- the base station When the first indication (the base station identifies the narrowband UE) is carried by Msg1, then the base station confirms that the UE sending Msg3 may be a narrowband UE before sending Msg2, so in the resource scheduling (Uplink grant) of Msg3 in Msg2, the resource indicating Msg3 is The center frequency point is aligned with the resources of CORESET0, so that the narrowband UE does not need to perform radio frequency adjustment after Msg3. That is to say, when the first indication is carried by Msg1, the UE can determine that the resources of Msg3 are limited in CORESET0, so as to realize the restriction of resources in the downlink bandwidth part
- the configuration of resources in the first uplink bandwidth portion determined in step 202 may at least include at least one of the solutions shown in the following embodiments:
- the UE determines that the resources of Msg3 are limited in CORESET0.
- the UE assumes that the resources of Msg3 are limited in CORESET0.
- the UE does not expect the resources of Msg3 to be outside CORESET0.
- the UE confirms that access is blocked.
- the network side device when the above-mentioned first indication is carried by Msg1 or Msg3, the network side device (such as the base station) can use the PUCCH resource of Msg4-HARQ-ACK as the resource whose center frequency is aligned with CORESET0, so that the narrowband UE is in Msg4 No RF adjustment is required afterwards.
- the configuration of determining resources in the first uplink bandwidth portion shown in step 202 may at least include at least one of the solutions shown in the following embodiments:
- the UE assumes that the resources of Msg4-HARQ-ACK are limited in CORESET0;
- the UE does not expect the resources of the Msg4-HARQ-ACK to be outside CORESET0;
- the UE determines that the resources for the Msg4-HARQ-ACK are limited in CORESET0.
- the UE acknowledges that access is blocked.
- the frequency position of the downlink bandwidth part of the reconfiguration (which can be reconfigured through SIB1) will take effect after Msg4, which will cause the narrowband UE to work in a bandwidth part larger than the bandwidth of the narrowband UE after Msg4.
- the resources in the row bandwidth section are limited.
- determining the configuration of resources in the first downlink bandwidth portion shown in step 202 may include:
- the narrowband UE determines that the PDSCH scheduled by downlink control information format 1-0 (Downlink Control Information format 1-0, DCI format 1-0) is within CORESET0.
- DCI format 1-0 Downlink Control Information format 1-0, DCI format 1-0
- PDSCH frequency domain resource allocation of Type 1 is used, and the frequency range of PDSCH can be adjusted by factor K, changing the frequency resource unit from 1
- the PRBs are updated to K PRBs.
- the narrowband UE determines that the frequency resource unit factor of the PDSCH scheduled by DCI format 1-0 is 1. It can be understood that after the Msg4 refers to after the UE receives the Msg4 from the network side device (eg, the base station).
- FIG. 3 is a schematic diagram showing the configuration of a narrowband UE according to the present embodiment.
- the narrowband UE is configured to include a radio transmission/reception unit 10 and an upper layer processing unit 14 .
- the wireless transceiver unit 10 includes an antenna unit 11 , an RF (Radio Frequency) unit 12 , and a baseband unit 13 .
- the upper layer processing unit 14 is configured to include a medium access control layer processing unit 15 and a radio resource control layer processing unit 16 .
- the wireless transceiver unit 10 is also referred to as a transmission unit, a reception unit, a monitoring unit, or a physical layer processing unit.
- the upper processing unit 14 is also referred to as a measurement unit, a selection unit, or a control unit 14 .
- the upper layer processing unit 14 outputs the uplink data (which may also be referred to as a transport block) generated by a user's operation or the like to the wireless transmission/reception unit 10 .
- the upper layer processing unit 14 performs the medium access control (Medium Access Control, MAC) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (Radio Link Control, RLC) layer and the Radio Resource Control (Radio Resource Control) layer. Part or all of the processing in the Resource Control, RRC) layer.
- the medium access control layer processing unit 15 included in the upper layer processing unit 14 performs processing of the MAC layer.
- the medium access control layer processing unit 15 controls the transmission of the scheduling request based on various configuration information and parameters managed by the radio resource control layer processing unit 16 .
- the radio resource control layer processing unit 16 included in the upper layer processing unit 14 performs processing of the RRC layer (Radio Resource Control layer).
- the radio resource control layer processing unit 16 manages various configuration information and parameters of the device itself.
- the radio resource control layer processing unit 16 sets various setting information/parameters based on the upper layer signal received from the network side device (eg, base station). That is, the radio resource control layer processing unit 16 sets various configuration information/parameters based on information representing various configuration information/parameters received from a network-side device (eg, a base station).
- the radio resource control layer processing unit 16 controls (determines) resource allocation based on downlink control information received from a network-side device (eg, a base station).
- the wireless transceiver unit 10 performs physical layer processing such as modulation, demodulation, encoding, and decoding.
- the wireless transceiver unit 10 separates, demodulates, and decodes the signal received from the network-side device (eg, base station), and outputs the decoded information to the upper-layer processing unit 14 .
- the wireless transceiver 10 modulates and encodes data to generate a transmission signal, and transmits it to a network-side device (eg, a base station).
- the radio transceiver 10 may have a function of receiving one or more reference signals in a certain cell.
- the wireless transceiver unit 10 may have a function of transmitting a random access preamble at the PRACH opportunity determined by the upper layer processing unit 14, and the RF unit 12 may convert (down-convert, down covert) the signal received via the antenna unit 11 by quadrature demodulation. For baseband signals, unwanted frequency components are removed.
- the RF unit 12 outputs the processed analog signal to the baseband unit.
- the baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal.
- the baseband part 13 removes the part equivalent to CP (Cyclic Prefix, cyclic prefix) from the converted digital signal, performs fast Fourier transform (Fast Fourier Transform, FFT) on the signal after removing the CP, and extracts the signal in the frequency domain .
- the baseband part 13 performs inverse fast Fourier transform (Inverse Fast Fourier Transform, IFFT) on the data, generates an OFDM symbol, adds a CP to the generated OFDM symbol to generate a baseband digital signal, and converts the baseband digital signal into an analog signal .
- the baseband unit 13 outputs the converted analog signal to the RF unit 12 .
- the RF unit 12 uses a low-pass filter to remove unnecessary frequency components from the analog signal input from the baseband unit 13 , up-converts the analog signal to a carrier frequency, and transmits it via the antenna unit 11 .
- the RF unit 12 amplifies power.
- the RF unit 12 may have a function of specifying the transmission power of the uplink signal and/or the uplink channel to be transmitted in the cell within the area.
- the RF unit 12 is also referred to as a transmission power control unit.
- each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
- the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that, the division of modules in the embodiment of the present invention is schematic, and is only a logical function division, and there may be other division manners in actual implementation.
- Each functional unit in each of the embodiments of the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
- the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
- the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
- a computer-readable storage medium includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application.
- the aforementioned storage medium includes: flash memory, removable hard disk, read-only memory, random access memory, magnetic disk or optical disk and other media that can store program codes.
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Abstract
Description
Claims (36)
- 一种带宽部分的激活方法,其特征在于,应用于UE,所述方法包括:确定使用重配置的第一带宽部分,或者,确定使用第二带宽部分。
- 根据权利要求1所述的方法,其特征在于,第一带宽部分包括第一下行带宽部分和/或第一上行带宽部分,第二带宽部分包括第二下行带宽部分和/或第二上行带宽部分。
- 根据权利要求2所述的方法,其特征在于,所述确定使用重配置的第一带宽部分,或者,确定使用第二带宽部分,包括:根据高层参数,确定使用重配置的第一下行带宽部分和/或第一上行带宽部分;或者,根据高层参数,确定使用第二下行带宽部分和/或第二上行带宽部分。
- 根据权利要求2所述的方法,其特征在于,所述确定使用重配置的第一带宽部分,包括:在所述重配置的第一下行带宽部分内接收消息2 Msg2或消息4 Msg4;和/或,在所述重配置的第一上行带宽部分内发送消息3 Msg3或消息4的混合自动重传申请-确认反馈Msg4-HARQ-ACK。
- 根据权利要求2所述的方法,其特征在于,所述确定使用第二带宽部分,包括:在所述第二下行带宽部分内接收Msg2或Msg4;和/或,在所述第二上行带宽部分内发送Msg3或Msg4-HARQ-ACK。
- 根据权利要求2所述的方法,其特征在于,包括:所述重配置的第一上行带宽部分和所述重配置的第一下行带宽部分在Msg1发送之后被激活或使用。
- 根据权利要求2所述的方法,其特征在于,包括:所述第二上行带宽部分和所述第二下行带宽部分在Msg1发送之后被激活或使用。
- 根据权利要求2所述的方法,其特征在于,所述确定使用重配置的第一带宽部分,包括:在所述重配置的第一下行带宽部分内接收Msg2或Msg4;或者,在所述重配置的第一上行带宽部分内发送消息1 Msg1、Msg3或Msg4-HARQ-ACK。
- 根据权利要求2所述的方法,其特征在于,所述确定使用第二带宽部分,包括:在所述第二下行带宽部分内接收Msg2或Msg4;或者,在所述第二上行带宽部分内发送Msg1、Msg3或Msg4-HARQ-ACK。
- 根据权利要求2所述的方法,其特征在于,包括:所述重配置的第一下行带宽部分在Msg1发送之后被激活或使用。
- 根据权利要求2所述的方法,其特征在于,包括:所述第二下行带宽部分在Msg1发送之后被激活或使用。
- 根据权利要求2所述的方法,其特征在于,所述确定使用重配置的第一带宽部分,包括:在所述重配置的第一下行带宽部分内接收第一类消息、Msg2或Msg4;和/或,在所述重配置的第一上行带宽部分内发送Msg3或Msg4-HARQ-ACK。
- 根据权利要求2所述的方法,其特征在于,所述确定使用第二带宽部分,包括:在所述第二下行带宽部分内接收第一类消息、Msg2或Msg4;和/或,在所述第二上行带宽部分内发送Msg3或Msg4-HARQ-ACK。
- 根据权利要求2所述的方法,其特征在于,包括:所述重配置的第一上行带宽部分在Msg1发送之后被激活或使用。
- 根据权利要求2所述的方法,其特征在于,包括:所述第二上行带宽部分在Msg1发送之后被激活或使用。
- 根据权利要求12或13所述的方法,其特征在于,所述第一类消息包括SIB1或OSI或Paging中的至少一个。
- 一种带宽部分的配置方法,其特征在于,应用于UE,包括:确定第一下行带宽部分的配置,和/或,确定第一上行带宽部分和/或第一下行带宽部分内资源的配置。
- 根据权利要求17所述的方法,其特征在于,所述确定第一下行带宽部分的配置,包括:确定重配置的频率位置不生效;或者,使用控制资源集合0 CORESET0的频率位置作为下行带宽部分的频率位置;或者,确定专用RRC配置的下行带宽部分的频率位置包含CORESET0。
- 根据权利要求18所述的方法,其特征在于,所述确定重配置的频率位置不生效,包括:在Msg4接收之后,确定重配置的频率位置不生效。
- 根据权利要求18所述的方法,其特征在于,所述使用CORESET0 的频率位置作为下行带宽部分的频率位置,包括:在Msg4接收之后,使用CORESET0的频率位置作为下行带宽部分的频率位置。
- 根据权利要求17所述的方法,其特征在于,所述确定第一上行带宽部分和/或第一下行带宽部分内资源的配置,包括:确定Msg3的资源限制在CORESET0中;或者,假设Msg3的资源限制在CORESET0中;或者,不期望Msg3的资源在CORESET0之外。
- 根据权利要求21所述的方法,还包括:若所述Msg3的资源在CORESET0之外,则确认被阻止接入。
- 根据权利要求17所述的方法,所述确定第一上行带宽部分和/或第一下行带宽部分内资源的配置,包括:若Msg1携带第一指示,则第一上行带宽部分内资源的配置。
- 根据权利要求23所述的方法,所述第一指示为所述UE为窄带UE的指示。
- 根据权利要求17所述的方法,其特征在于,所述确定第一上行带宽部分和/或第一下行带宽部分内资源的配置,包括:确定Msg4-HARQ-ACK的PUCCH资源限制在CORESET0中;或者,假设Msg4-HARQ-ACK的资源限制在CORESET0中;或者,不期望Msg4-HARQ-ACK的资源在CORESET0之外。
- 根据权利要求25所述的方法,还包括:若所述Msg4-HARQ-ACK的资源在CORESET0之外,则确认被阻止接入。
- 根据权利要求17所述的方法,所述确定第一上行带宽部分和/或第一下行带宽部分内资源的配置,包括:若Msg1或Msg3携带第二指示,确定第一上行带宽部分内资源的配置。
- 根据权利要求27所述的方法,所述第二指示为所述UE为窄带UE的指示。
- 根据权利要求17所述的方法,所述确定第一上行带宽部分和/或第一下行带宽部分内资源的配置,包括:确定下行控制信息格式1-0 DCI format 1-0调度的PDSCH在CORESET0内。
- 根据权利要求17所述的方法,所述确定第一上行带宽部分和/或第 一下行带宽部分内资源的配置,包括:在Msg4接收之后,确定DCI format 1-0调度的PDSCH的频率资源单位因子为1。
- 一种带宽部分的激活装置,包括确定模块,用于确定使用重配置的第一带宽部分,或者,确定使用第二带宽部分。
- 一种带宽部分的配置装置,包括确定模块,用于确定第一下行带宽部分的配置,和/或,确定第一上行带宽部分和/或第一下行带宽部分内资源的配置。
- 一种芯片模组,包括权利要求31所述的激活装置。
- 一种芯片模组,包括权利要求32所述的配置装置。
- 一种电子设备,其特征在于,所述电子设备还包括处理器和存储设备,所述存储设备存有应用程序或者程序指令,所述应用程序或所述程序指令由所述处理器运行时,使得所述电子设备执行权利要求1-16任一项所述的激活方法。
- 一种电子设备,其特征在于,所述电子设备还包括处理器和存储设备,所述存储设备存有应用程序或者程序指令,所述应用程序或所述程序指令由所述处理器运行时,使得所述电子设备执行权利要求17-30任一项所述的配置方法。
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CN101064634A (zh) * | 2006-04-30 | 2007-10-31 | 华为技术有限公司 | 频段重配置系统和方法 |
US20190045419A1 (en) * | 2017-09-28 | 2019-02-07 | Intel IP Corporation | Systems, methods, and apparatuses for providing and obtaining scheduling information for sib1-br during handover |
WO2021038920A1 (ja) * | 2019-08-30 | 2021-03-04 | 株式会社Nttドコモ | 端末、基地局及び通信方法 |
CN112567803A (zh) * | 2018-08-09 | 2021-03-26 | 高通股份有限公司 | 无线通信中的带宽配置技术 |
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CN101064634A (zh) * | 2006-04-30 | 2007-10-31 | 华为技术有限公司 | 频段重配置系统和方法 |
US20190045419A1 (en) * | 2017-09-28 | 2019-02-07 | Intel IP Corporation | Systems, methods, and apparatuses for providing and obtaining scheduling information for sib1-br during handover |
CN112567803A (zh) * | 2018-08-09 | 2021-03-26 | 高通股份有限公司 | 无线通信中的带宽配置技术 |
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