Bandwidth part activation method, bandwidth part configuration method and electronic equipment

Abstract

Provided is a bandwidth part activation method, applied to UE, the method comprising: determining to use a reconfigured first bandwidth part, or determining to use a second bandwidth part, through the method of the present application, resource segmentation can be avoided, and radio frequency adjustment can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of terminal, and in particular, to a bandwidth part activation method and configuration method and electronic equipment. BACKGROUND

[0002] At present, the next radio (NR) only supports non-narrowband user equipment (UE), for example, a UE with a bandwidth of 100MHz. A narrowband UE (reduced capability UE, or RedCap UE) with a bandwidth less than 100MHz can be used for machine type communication (MTC) or Internet of Things (IoT), and has the advantages of low cost and low power consumption.

[0003] In the existing protocol or standard, the base station defaults that there is only non-narrowband UE in the cell, i.e., a UE with a bandwidth of 100MHz. When a narrowband UE enters the cell, the narrowband UE acquires MIB (Master Information Block), and then obtains the frequency location of the initial downlink bandwidth part (Initial DL Bandwidth Part), and then acquires SIB1. According to SIB1, the narrowband UE obtains the frequency location of the reconfigured initial downlink bandwidth part. Further, the narrowband UE obtains the frequency location of the initial uplink bandwidth part (Initial UL Bandwidth Part). However, the bandwidth of the reconfigured initial downlink bandwidth part can be greater than the downlink bandwidth of the narrowband UE, and the bandwidth of the reconfigured initial uplink bandwidth part can also be greater than the uplink bandwidth of the narrowband UE (because the base station does not know that there is a narrowband UE in the cell), thereby causing the narrowband UE to be unable to access the network.

[0004] How to optimize the configuration of the initial downlink bandwidth part and the initial uplink bandwidth part to solve the narrowband UE access is a problem to be solved. SUMMARY

[0005] The first aspect provides a bandwidth part activation method applied to a UE, and the method comprises: determining to use a reconfigured first bandwidth part, or determining to use a second bandwidth part.

[0006] In an embodiment of the present application, the first bandwidth part comprises a first downlink bandwidth part and / or a first uplink bandwidth part, and the second bandwidth part comprises a second downlink bandwidth part and / or a second uplink bandwidth part.

[0007] In an embodiment of the application, the determining using the reconfigured first bandwidth part comprises: determining, according to the higher layer parameter, to use the reconfigured first downlink bandwidth part and / or the first uplink bandwidth part; or, determining, according to the higher layer parameter, to use the second downlink bandwidth part and / or the second uplink bandwidth part.

[0008] In an embodiment of the application, the determining using the reconfigured first bandwidth part comprises: receiving a message 2, Msg2, or a message 4, Msg4, within the reconfigured first downlink bandwidth part; and / or, transmitting a message 3, Msg3, or a message 4, Msg4, hybrid automatic repeat request-acknowledgement feedback, Msg4-HARQ-ACK, within the reconfigured first uplink bandwidth part.

[0009] In an embodiment of the application, the determining using the second bandwidth part comprises: receiving a Msg2 or a Msg4 within the second downlink bandwidth part; and / or, transmitting a Msg3 or a Msg4-HARQ-ACK within the second uplink bandwidth part.

[0010] In an embodiment of the application, comprising: the reconfigured first uplink bandwidth part and the reconfigured first downlink bandwidth part are activated or used after the Msg1 transmission.

[0011] In an embodiment of the application, comprising: the second uplink bandwidth part and the second downlink bandwidth part are activated or used after the Msg1 transmission.

[0012] In an embodiment of the application, the determining using the reconfigured first bandwidth part comprises: receiving a Msg2 or a Msg4 within the reconfigured first downlink bandwidth part; or, transmitting a message 1, Msg1, a Msg3, or a Msg4-HARQ-ACK within the reconfigured first uplink bandwidth part.

[0013] In an embodiment of the application, the determining using the second bandwidth part comprises: receiving a Msg2 or a Msg4 within the second downlink bandwidth part; or, transmitting a Msg1, a Msg3, or a Msg4-HARQ-ACK within the second uplink bandwidth part. In an embodiment of the application, comprising: The reconfigured first downlink bandwidth part is activated or used after the Msg1 transmission.

[0014] In an embodiment of the application, comprising: The second downlink bandwidth part is activated or used after the Msg1 transmission.

[0015] In an embodiment of the application, the determining to use the reconfigured first bandwidth part comprises: receiving a first type message, Msg2 or Msg4, within the reconfigured first downlink bandwidth part; and / or, transmitting Msg3 or Msg4-HARQ-ACK within the reconfigured first uplink bandwidth part.

[0016] In an embodiment of the application, the determining to use the second bandwidth part comprises: receiving a first type message, Msg2 or Msg4, within the second downlink bandwidth part; and / or, transmitting Msg3 or Msg4-HARQ-ACK within the second uplink bandwidth part.

[0017] In an embodiment of the application, comprising: The reconfigured first uplink bandwidth part is activated or used after the Msg1 transmission.

[0018] In an embodiment of the application, comprising: The second uplink bandwidth part is activated or used after the Msg1 transmission.

[0019] In an embodiment of the application, the first type message comprises at least one of SIB1 or OSI or Paging.

[0020] In a second aspect, the application provides a method for configuring a bandwidth part, applied to a UE, comprising: determining a configuration of a first downlink bandwidth part, and / or determining a configuration of a first uplink bandwidth part and / or resources within the first downlink bandwidth part.

[0021] In an embodiment of the application, the determining the configuration of the first downlink bandwidth part comprises: determining that a reconfigured frequency location is not effective; or, using a frequency location of a control resource set 0, CORESET0, as a frequency location of the downlink bandwidth part; or, determining that a frequency location of a dedicated RRC configured downlink bandwidth part contains the CORESET0.

[0022] In an embodiment of the application, the determining that the reconfigured frequency location is not effective comprises: After receiving the Msg4, determining that the reconfigured frequency location is not effective.

[0023] In an embodiment of the application, the using the frequency location of the CORESET0 as the frequency location of the downlink bandwidth part comprises: After receiving the Msg4, using the frequency location of the CORESET0 as the frequency location of the downlink bandwidth part.

[0024] In an embodiment of the application, the determining the configuration of the resource within the first uplink bandwidth part and / or the first downlink bandwidth part comprises: determining that the resource of the Msg3 is limited in the CORESET0; or, assuming that the resource of the Msg3 is limited in the CORESET0; or, not expecting the resource of the Msg3 outside the CORESET0.

[0025] In an embodiment of the application, further comprising: if the resource of the Msg3 is outside the CORESET0, confirming that the access is blocked.

[0026] In an embodiment of the application, the determining the configuration of the resource within the first uplink bandwidth part and / or the first downlink bandwidth part comprises: if the Msg1 carries the first indication, the configuration of the resource within the first uplink bandwidth part.

[0027] In an embodiment of the application, the first indication is an indication that the UE is a narrowband UE.

[0028] In an embodiment of the application, the determining the configuration of the resource within the first uplink bandwidth part and / or the first downlink bandwidth part comprises: determining that the PUCCH resource of the Msg4-HARQ-ACK is limited in the CORESET0; or, assuming that the resource of the Msg4-HARQ-ACK is limited in the CORESET0; or, not expecting the resource of the Msg4-HARQ-ACK outside the CORESET0.

[0029] In an embodiment of the application, further comprising: if the resource of the Msg4-HARQ-ACK is outside the CORESET0, confirming that the access is blocked.

[0030] In an embodiment of the present application, the determining the configuration of the resource within the first uplink bandwidth part and / or the first downlink bandwidth part comprises: If the Msg1 or the Msg3 carries the second indication, determining the configuration of the resource within the first uplink bandwidth part.

[0031] In an embodiment of the present application, the second indication is an indication that the UE is a narrowband UE.

[0032] In an embodiment of the present application, the determining the configuration of the resource within the first uplink bandwidth part and / or the first downlink bandwidth part comprises: Determining that a PDSCH scheduled by a downlink control information (DCI) format 1-0 is within a CORESET 0.

[0033] In an embodiment of the present application, the determining the configuration of the resource within the first uplink bandwidth part and / or the first downlink bandwidth part comprises: After receiving the Msg4, determining that a frequency resource unit factor of a PDSCH scheduled by a DCI format 1-0 is 1.

[0034] In a third aspect, an apparatus for activating a bandwidth part is provided, comprising a determining module configured to determine to use a first bandwidth part reconfigured, or determine to use a second bandwidth part.

[0035] In a fourth aspect, an apparatus for configuring a bandwidth part is provided, comprising a determining module configured to determine a configuration of a first downlink bandwidth part, and / or determine a configuration of a resource within a first uplink bandwidth part and / or the first downlink bandwidth part.

[0036] In a fifth aspect, a chip module is provided, comprising the apparatus for activating according to claim 31.

[0037] In a sixth aspect, a chip module is provided, comprising the apparatus for configuring according to claim 32.

[0038] In a seventh aspect, an electronic device is provided, further comprising a processor and a storage device, the storage device storing an application program or program instructions, and the application program or the program instructions, when executed by the processor, causing the electronic device to perform the method for activating according to the first aspect.

[0039] In an eighth aspect, an electronic device is provided, further comprising a processor and a storage device, the storage device storing an application program or program instructions, and the application program or the program instructions, when executed by the processor, causing the electronic device to perform the method for configuring according to the second aspect. Based on the scheme shown in the present application, resource segmentation can be avoided, and radio frequency adjustment can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 A flowchart of a bandwidth part activation method is provided for the embodiments of the present application. Figure 2 A flowchart of a bandwidth part configuration method is provided for the embodiments of the present application.

[0041] Figure 3 A structural schematic diagram of a UE is provided for the embodiments of the present application. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In the description of the embodiments of the present application, unless otherwise specified, “ / ” represents the meaning of or, for example, A / B can represent A or B; in this article, “and / or” only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent three cases of A alone, A and B together, and B alone.

[0043] Hereinafter, the terms “first” and “second” are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” can explicitly or implicitly include one or more features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of “multiple” is two or more.

[0044] Next, the technologies in the existing LTE and NR are explained and described: Regarding bandwidth part: In NR, the concept of bandwidth part is introduced. The bandwidth part is a continuous frequency resource on the cell carrier, and the network device can configure different bandwidth parts with different bandwidth sizes for different UEs. For a UE, when a bandwidth part is configured and activated, this bandwidth part is called an active bandwidth part, and the data and control information sent by the UE uplink or received by the UE downlink are limited within the active bandwidth part. For a UE, when a bandwidth part is activated, it can also be said that the UE switches to the bandwidth part.

[0045] Further, the initial access of NR is introduced: In NR, generally, a UE is a 100MHz bandwidth capable UE. The UE blindly detects PSS / SSS / PBCH in a synchronization signal block at initial access, obtains the MIB and time index information carried in PBCH. The UE obtains the configuration of CORESET (may be referred to as CORESET0) and its search space set (may be referred to as search space set 0) of scheduling System Information Block 1 (SIB1) from the information in MIB, and then the UE can monitor Type0-PDCCH scheduling PDSCH carrying SIB1 and decode SIB1. Since the bandwidth of CORESET0 is set by a table in PBCH, the maximum bandwidth of CORESET0 is implicitly defined in the protocol. Further, the protocol stipulates that the frequency domain resource of PDSCH carrying SIB1 is within the bandwidth (PRBs) of CORESET0, so the maximum bandwidth of PDSCH carrying SIB1 is also implicitly defined in the protocol. In fact, in the idle state, the UE works in the initial active downlink bandwidth part, and 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 frequency domain position of the initial active downlink bandwidth part can be modified by signaling to cover the frequency domain position of CORESET0), so the maximum bandwidth of the initial active downlink bandwidth part is implicitly defined in the protocol. Generally, the UE receives SIB1, other system information (OSI) and paging in the initial active downlink bandwidth part.

[0046] A narrowband UE (reduced capability UE, or RedCap UE), for example, a UE with a bandwidth less than 100MHz, can be used for machine type communication (MTC) or internet of things (IoT). The initial access of a narrowband UE is a problem to be solved.

[0047] For the initial active downlink bandwidth part (Initial Active DL BWP), MIB configures its frequency position (equivalent to the frequency position of CORESET0) by 4 bits, and SIB1 can reconfigure its frequency position (also including the configuration of control and data channels). The frequency position configured by SIB1 (through the high layer parameter LocationAndBandwidth Configuration) only takes effect after Msg4 (message 4).

[0048] For Initial Active Uplink Bandwidth Part (Initial Active UL BWP), SIB1 configures its frequency location (also including the configuration of control and data channel), the frequency location configured by SIB1 (through high layer parameter LocationAndBandwidth configuration) can take effect immediately for Msg1, Msg3 and subsequent operations.

[0049] To solve the above technical problems, two solutions are proposed: Solution one, based on independent initial active downlink bandwidth part and initial active uplink bandwidth part solution: specifically, the base station broadcasts the configuration of the initial active downlink bandwidth part and the initial active uplink bandwidth part (including the frequency location) for narrowband UEs in SIB1, and the bandwidth part dedicated to narrowband UEs is also called independent initial active downlink bandwidth part and initial active uplink bandwidth part. The narrowband UE configures its initial active downlink bandwidth part and initial active uplink bandwidth part according to the independent initial active downlink bandwidth part and initial active uplink bandwidth part by default.

[0050] Solution one can simplify UE implementation, but it needs to configure independent initial active downlink bandwidth part and initial active uplink bandwidth part for the network, which complicates the network implementation and causes resource fragmentation.

[0051] Solution two, based on shared initial active downlink bandwidth part and initial active uplink bandwidth part solution: the narrowband UE still configures its initial active downlink bandwidth part and initial active uplink bandwidth part according to the frequency location of the original (for non-narrowband UEs) initial active downlink bandwidth part and initial active uplink bandwidth part, and in order to avoid the current (such as the current time slot) channel / signal resource falling outside the bandwidth of the narrowband UE, the following methods can be used: (1) Narrowband UE needs to perform RF retuning, that is, if the current (such as the current time slot) channel / signal resource 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 resource.

[0052] (2) Independent resource configuration (mainly frequency domain) is used by the narrowband UE, that is, the frequency resource location of the channel / signal configured by the base station for the narrowband UE falls within the bandwidth of the narrowband UE.

[0053] (3) Base station configuration, that is, the base station configures the same narrowband initial active downlink bandwidth part and narrowband initial active uplink bandwidth part for narrowband UEs and non-narrowband UEs.

[0054] In the second scheme, although the network does not need to configure the independent initial active downlink bandwidth part and the initial active uplink bandwidth part, the following problems exist: The radio frequency adjustment needs the UE to frequently adjust the center frequency point of the radio frequency, which is not friendly to the implementation and power consumption of the UE. Moreover, the radio frequency adjustment needs a certain time gap, which causes the behaviors of the narrowband UE and the non-narrowband UE to be inconsistent, and it is difficult to coexist.

[0055] The narrowband UE uses independent resource configuration (mainly in the frequency domain), and the effect achieved in the frequency domain is similar to that of the independent initial active downlink bandwidth part and the initial active uplink bandwidth part, which will have similar problems as the independent initial active downlink bandwidth part and the initial active uplink bandwidth part, and the flexibility in the time domain resource is poor.

[0056] The base station configuration will affect the non-narrowband UE, and the non-narrowband UE cannot utilize more resources.

[0057] In order to overcome the problems in the first scheme and the second scheme, in an embodiment of the present application, a bandwidth part (BWP) activation method is proposed, which can be applied to the above narrowband UE.

[0058] In step 102, the narrowband UE determines to use the reconfigured first bandwidth part, or determines to use the second bandwidth part.

[0059] The use of the reconfigured first bandwidth part can be that the narrowband UE uses the reconfigured first bandwidth part, or that the narrowband UE considers that the reconfigured first bandwidth part is activated or active, or that the reconfiguration of the first bandwidth part is effective or available or applicable, or that the narrowband UE applies the reconfiguration of the first bandwidth part. The bandwidth part being activated can be equivalent to the UE using the bandwidth part.

[0060] The use of the second bandwidth part can be that the narrowband UE uses the second bandwidth part, or that the narrowband UE considers that the second bandwidth part is activated or active.

[0061] In an embodiment, the first bandwidth part includes a first downlink bandwidth part (DL BWP) and / or a first uplink bandwidth part (UL BWP), and the second bandwidth part includes a second downlink bandwidth part and / or a second uplink bandwidth part.

[0062] For initial access, the first bandwidth part includes a first initial active downlink bandwidth part and / or a first initial active uplink bandwidth part, and the second bandwidth part includes a second initial active downlink bandwidth part and / or a second initial active uplink bandwidth part. The first initial active downlink bandwidth part can also be referred to as a first initial downlink bandwidth part (Initial DL BWP), and the first initial active uplink bandwidth part can also be referred to as a first initial uplink bandwidth part (Initial UL BWP). The second initial active downlink bandwidth part can also be referred to as a second initial downlink bandwidth part, and the second initial active uplink bandwidth part can also be referred to as a second initial uplink bandwidth part. In the following description, the first downlink bandwidth part, the first initial active downlink bandwidth part, and the first initial downlink bandwidth part are not distinguished, the first uplink bandwidth part, the first initial active uplink bandwidth part, and the first initial uplink bandwidth part are not distinguished, the second downlink bandwidth part, the second initial active downlink bandwidth part, and the second initial downlink bandwidth part are not distinguished, and the second uplink bandwidth part, the second initial active uplink bandwidth part, and the second initial uplink bandwidth part are not distinguished.

[0063] Generally, the configuration of the first downlink bandwidth part and the first uplink bandwidth part is obtained by the UE after obtaining a system information block 1 (SIB1), and is activated by default. For a narrowband UE, the first downlink bandwidth part and / or the first uplink bandwidth part can be reconfigured, and at a certain moment, the reconfigured first downlink bandwidth part and / or the first uplink bandwidth part can be used by the narrowband UE; or, the base station can configure a second downlink bandwidth part and / or a 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 in other words, the second downlink bandwidth part and / or the second uplink bandwidth part can be used by the narrowband UE.

[0064] In an embodiment, the determination of the narrowband UE in step 102 to use the reconfigured first bandwidth part or to use the second bandwidth part can be determined according to a higher layer parameter, for example, an RRC parameter.

[0065] Exemplarily, the narrowband UE determines to use the reconfigured first downlink bandwidth part and / or the first uplink bandwidth part according to a higher layer parameter. The narrowband UE determines to use the second downlink bandwidth part and / or the second uplink bandwidth part according to a higher layer parameter.

[0066] In the above embodiments, the first bandwidth part (the first downlink bandwidth part and the first uplink bandwidth part) before reconfiguration is equivalent to a bandwidth part shared by narrowband UEs and non-narrowband UEs. The first bandwidth part after reconfiguration is equivalent to a bandwidth part dedicated to narrowband UEs independently (used). The second bandwidth part can be understood as a bandwidth part independently (used) by narrowband UEs, that is, not shared with narrowband UEs, that is, the second downlink bandwidth part and the second uplink bandwidth part belong to a bandwidth part independently (used).

[0067] In an embodiment, the determination of using the first bandwidth part after reconfiguration or the determination of using the second bandwidth part in step 102 includes: First, the narrowband UE receives a 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, etc.

[0068] Specifically, the narrowband UE receives SIB1, OSI and paging in the first downlink bandwidth part (shared) before reconfiguration. For SIB1, OSI and paging, the narrowband UE and the non-narrowband UE can share the same resource, and resource segmentation is avoided as much as possible. Generally, the base station cannot know the existence of the non-narrowband UE before receiving the message 1 (Msg1), so the narrowband UE uses the first downlink bandwidth part (shared) before Msg1 is reasonable, which has the advantage of avoiding resource segmentation.

[0069] It should be noted that the Message 1 (Msg1) shown in the context of the specification can be a random access preamble or a physical random access channel (PRACH) or a random access preamble transmission; the Message 2 (Msg2) can be a random access response (RAR) or a random access response reception; the Message 3 (Msg3) can be a RAR uplink scheduled physical uplink shared channel (PUSCH); the Message 4 (Msg4) can be a physical downlink shared channel (PDSCH) with UE contention resolution identity; the Message 4 Hybrid Automatic Repeat request-acknowledgement (Msg4-HARQ-ACK) can be a HARQ-ACK for the Message 4 or a physical uplink control channel (PUCCH) carrying the HARQ-ACK for the Message 4. Generally, for a random access channel (RACH) procedure, four steps (4-step random access) are generally required. For the 4-step random access, the first step is that the UE transmits a physical random access channel (PRACH), also known as Message 1; the second step is that the base station transmits a random access response (RAR), also known as Message 2; the third step is that the user equipment transmits Message 3, which can carry a high-layer message of RRCSetupRequest; the fourth step is that the base station 110 transmits Message 4, and the user equipment can confirm the success of the contention access by receiving the Message 4, i.e., the base station confirms the acceptance of the random access request of the user equipment (with the user equipment identification code), and the Message 4 can carry a high-layer message of RRCSetup. These messages are all specified in related protocols or standards, and the present application does not elaborate on them.

[0070] Secondly, after receiving the first type of message, the narrowband UE transmits Msg1 through the first uplink bandwidth part (shared). Generally, the base station cannot know the existence of the non-narrowband UE at the moment when the Msg1 is being received, so it is reasonable to use the first uplink bandwidth part (shared) for Msg1, which has the advantage of avoiding resource splitting.

[0071] In one example, after Msg1, the narrowband UE starts to use the reconfigured first downlink bandwidth part, or the narrowband UE starts to use the second downlink bandwidth part, i.e., the second downlink bandwidth part is activated. It can be understood that MSG1 refers to after the narrowband UE transmits Msg1 to the network side device, which includes the base station.

[0072] In one example, after Msg1, the narrowband UE can receive Msg2 and / or Msg4 from the network side device in the reconfigured first downlink bandwidth part or the second downlink bandwidth part, and the narrowband UE can transmit Msg3 and / or Msg4-HARQ-ACK to the network side device in the reconfigured first uplink bandwidth part or the second uplink bandwidth part.

[0073] In one example, after Msg1, the second uplink bandwidth part is activated.

[0074] The narrowband UE receives Msg2 and / or Msg4 in the reconfigured first downlink bandwidth part (independent) or the (activated) second downlink bandwidth part (independent), and transmits subsequent Msg3 and / or Msg4-HARQ-ACK in the reconfigured first uplink bandwidth part (independent) or the (activated) second uplink bandwidth part (independent), so that the subsequent operations after Msg1 are all in the independent downlink bandwidth part and the uplink bandwidth part (the two bandwidth parts can be center frequency aligned, and neither is greater than the bandwidth of the narrowband UE), reducing the number of possible radio frequency adjustments. There may be one 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 occasion (RACH Occasion, RO) frequency resource; there may be one radio frequency adjustment from the shared uplink bandwidth part to the independent downlink bandwidth part, such as when the RO frequency resource is not aligned with the center frequency of the independent downlink bandwidth part; there are two radio frequency adjustments. This is actually taking Msg1 as the time point when the independent downlink bandwidth part and the uplink bandwidth part are activated.

[0075] In one example, after Msg1, the narrowband UE starts to use the reconfigured first downlink bandwidth part, or the narrowband UE starts to use the second downlink bandwidth part, i.e., the second downlink bandwidth part is activated. It can be understood that MSG1 refers to after the narrowband UE transmits Msg1 to the network side device, which includes the base station. First, the narrowband UE receives the first type of message, such as SIB1, OSI, and paging, from the base station in the first downlink bandwidth part (shared).

[0076] Secondly, after the narrowband UE receives the first type of message, 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 sends Msg1 in the independent uplink bandwidth part.

[0077] In order for the narrowband UE to be able to send Msg1 using the independent uplink bandwidth part, 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 is that the base station can distinguish between narrowband UEs and non-narrowband UEs through the RO resources in different uplink bandwidth parts.

[0078] It should be noted that after Msg1, the narrowband UE starts to use the reconfigured first downlink bandwidth part, or the narrowband UE starts to use the second downlink bandwidth part, that is, the reconfigured first downlink bandwidth part or the second uplink bandwidth part is activated. For the independent uplink bandwidth part, since Msg1 is sent using the independent uplink bandwidth part, the reconfigured first uplink bandwidth part or the second uplink bandwidth part is equivalent to being activated after the SIB1 configuration. It can be understood that after Msg1, the narrowband UE sends Msg1 to the network side device.

[0079] In one example, the narrowband UE receives Msg2 and / or Msg4 in the reconfigured first downlink bandwidth part (independent) or the (activated) second downlink bandwidth part (independent), and sends Msg3 and / or Msg4-HARQ-ACK in the reconfigured first uplink bandwidth part (independent) or the second uplink bandwidth part (independent).

[0080] In this way, the operation after Msg1 is in the independent downlink bandwidth part and the uplink bandwidth part (the two bandwidth parts can be center frequency aligned and both are not greater than the bandwidth of the narrowband UE), reducing the number of possible radio frequency adjustments. There is one radio frequency adjustment from the shared uplink bandwidth part to the independent downlink bandwidth part, that is, the RO frequency resource is not aligned with the center frequency of the independent downlink bandwidth part, that is, there is one radio frequency adjustment. Compared with embodiment one, embodiment two reduces one radio frequency adjustment. This is actually taking Msg1 as the time point when the independent initial activated downlink bandwidth part is activated.

[0081] In embodiment three, the determination of step 102 to use the reconfigured first bandwidth part or the determination to use the second bandwidth part includes: First, the narrowband UE receives the first type of message, such as SIB1, OSI and paging, from the base station in the reconfigured first downlink bandwidth part (standalone) or the second downlink bandwidth part (standalone). In this way, the narrowband UE can use completely independent SIB1, OSI, paging resources, and has higher flexibility.

[0082] Second, Msg1 is sent in the first uplink bandwidth part. Generally, the narrowband UE sends Msg1 in the first uplink bandwidth part (shared), and the base station cannot know the existence of non-narrowband UEs at the time of receiving Msg1, so it is reasonable to use the shared initial uplink bandwidth part for Msg1, which has the advantage of avoiding resource segmentation.

[0083] That is, 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 part is activated. For the second uplink bandwidth part, it is activated after the SIB1 is configured.

[0084] In one embodiment, the narrowband UE receives Msg2 and / or Msg4 in the reconfigured first downlink bandwidth part (standalone) or the (activated) second downlink bandwidth part (standalone), and sends Msg3 and / or Msg4-HARQ-ACK in the reconfigured first uplink bandwidth part (standalone) or the (activated) second uplink bandwidth part (standalone).

[0085] In this embodiment, the operations after Msg1 are all in the independent downlink bandwidth part and the uplink bandwidth part (the second downlink bandwidth part and the second uplink bandwidth part can be center frequency aligned, and neither is larger than the bandwidth of the narrowband UE), reducing the number of possible radio frequency adjustments. There may be one radio frequency adjustment from the independent downlink bandwidth part to the shared uplink bandwidth part, such as when the shared downlink bandwidth part and the random access occasion (RACH Occasion, RO) frequency resource are not center frequency aligned; there may be one radio frequency adjustment from the shared uplink bandwidth part to the independent downlink bandwidth part, such as when the RO frequency resource and the center frequency of the independent downlink bandwidth part are not aligned; there are two radio frequency adjustments. This is actually taking Msg1 as the time point when the independent uplink bandwidth part is activated.

[0086] In the second related technical solution shown above, the base station configures the same narrowband downlink bandwidth part and the same narrowband uplink bandwidth part for the narrowband UE and the non-narrowband UE. However, when the second solution adopts the shared downlink bandwidth part (the first downlink bandwidth part), the frequency location of the shared downlink bandwidth part reconfigured (through the SIB1) will take effect after the Msg4, which will cause the narrowband UE to work in a bandwidth part larger than the bandwidth of the narrowband UE after the Msg4. It can be understood that the UE receives the Msg4 from the network side device after the Msg4, wherein the network side device includes the base station.

[0087] Therefore, when the shared downlink bandwidth part is adopted, the downlink bandwidth part needs to be limited and / or the resources in the downlink bandwidth part need to be limited when the shared downlink bandwidth part is adopted.

[0088] Based on this, the embodiment of the present application further provides a bandwidth part configuration method, including: In 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.

[0089] The first downlink bandwidth part and the first uplink bandwidth part shown in the embodiment belong to the shared bandwidth part.

[0090] The determination of the configuration of the first downlink bandwidth part shown in step 202 can include at least one of the schemes shown in the following embodiments: In one embodiment, after the Msg4, the narrowband UE determines that the frequency location of the reconfigured first downlink bandwidth part (indicated by the high-layer parameter LocationAndBandwidth does not take effect, that is, the narrowband UE does not use the frequency location of the reconfigured first downlink bandwidth part.

[0091] In one embodiment, after the Msg4, the narrowband UE determines to continue using the frequency location of the control resource set 0 (Control Resource Set 0, CORESET0) as the frequency location of the first downlink bandwidth part.

[0092] In one embodiment, the narrowband UE determines that the frequency location of the downlink bandwidth part configured by the dedicated RRC configuration contains the CORESET0, or the frequency location of the downlink bandwidth part configured by the dedicated RRC configuration is equal to the CORESET0. It can be understood that after the narrowband UE enters the connected state, the narrowband UE uses the downlink bandwidth part containing the CORESET0, so that the narrowband UE uses the same resources as in the idle state.

[0093] Through the above embodiments, when the shared downlink bandwidth part is used, the restriction on the shared downlink bandwidth part can be realized at the same time, and the narrowband UE is prevented from working in a downlink bandwidth part larger than the bandwidth of the narrowband UE.

[0094] In one embodiment, the first indication is carried in Msg1 sent by the UE to the network side device (such as a base station), and the network side device (such as a base station) can determine whether the UE is a narrowband UE based on the first indication. In the art, the first indication can be referred to as an early identification indication, which is used for the network side device (such as a base station) to be able to identify a narrowband UE in advance (before the UE capability is reported).

[0095] When the first indication (identification of a narrowband UE by the base station) is carried by Msg1, the base station confirms that the UE sending Msg3 can be a narrowband UE before sending Msg2, so that in the resource scheduling (uplink grant) of Msg3 in Msg2, the resource of Msg3 is indicated to be aligned with the resource of CORESET0 at the center frequency point, so that the narrowband UE does not need to perform radio frequency adjustment after Msg3. That is, when the first indication is carried by Msg1, the UE can determine that the resource of Msg3 is limited in CORESET0, thereby realizing the restriction of the resource in the downlink bandwidth part. Further, when the first indication is carried by Msg1, the determination of the configuration of the resource in the first uplink bandwidth part shown in step 202 can include at least one of the schemes shown in the following embodiments: In one embodiment, the UE determines that the resource of Msg3 is limited in CORESET0.

[0096] In one embodiment, the UE assumes that the resource of Msg3 is limited in CORESET0.

[0097] In one embodiment, the UE does not expect the resource of Msg3 to be outside CORESET0.

[0098] In one embodiment, if the resource of Msg3 is outside CORESET0, the UE confirms to be blocked from access.

[0099] In another embodiment, when the first indication is carried by Msg1 or Msg3, the network side device (such as a base station) can align the PUCCH resource of Msg4-HARQ-ACK with the resource of CORESET0 at the center frequency point, so that the narrowband UE does not need to perform radio frequency adjustment after Msg4.

[0100] Further, when the first indication is carried by Msg1 or Msg3, the determination of the configuration of the resource in the first uplink bandwidth part shown in step 202 can include at least one of the schemes shown in the following embodiments: In one embodiment, the UE assumes that the resource of Msg4-HARQ-ACK is confined in CORESET0; In one embodiment, the UE does not expect that the resource of Msg4-HARQ-ACK is outside of CORESET0; In one embodiment, the UE determines that the resource of Msg4-HARQ-ACK is confined in CORESET0.

[0101] In one embodiment, if the resource of Msg4-HARQ-ACK is outside of CORESET0, the UE confirms that it is blocked from accessing.

[0102] The frequency location of the reconfigured (by SIB1) downlink bandwidth part will take effect after Msg4, which will cause the narrowband UE to work in a bandwidth part larger than the narrowband UE bandwidth after Msg4, therefore, the resource in the first downlink bandwidth part needs to be limited.

[0103] In one embodiment, the determination of the configuration of the resource in the first downlink bandwidth part shown in step 202 can include: After Msg4, the narrowband UE determines that the PDSCH scheduled by the DCI format 1-0 is in CORESET0. In the related protocol or standard, when the DCI format 1-0 is used for USS (UE specific Search Space), the PDSCH frequency domain resource allocation uses Type1, and the frequency range of the PDSCH can be adjusted by a factor K, which updates the frequency resource unit from 1 PRB to K PRB.

[0104] Therefore, if the PDSCH is to be limited in CORESET0, it is only necessary to limit that after Msg4, the narrowband UE determines that the frequency resource unit factor of the PDSCH scheduled by the DCI format 1-0 is 1. It can be understood that after Msg4 means after the UE receives Msg4 from the network side device (such as a base station).

[0105] Figure 3is a structure diagram of a narrowband UE according to the present embodiment. As illustrated, the narrowband UE is configured to include a radio transceiver 10 and an upper layer processing section 14. The radio transceiver 10 is configured to include an antenna section 11, an RF (Radio Frequency) section 12, and a baseband section 13. The upper layer processing section 14 is configured to include a medium access control layer processing section 15 and a radio resource control layer processing section 16. The radio transceiver 10 is also referred to as a transmission section, a reception section, a monitoring section, or a physical layer processing section. The upper layer processing section 14 is also referred to as a measurement section, a selection section, or a control section 14. The upper layer processing section 14 outputs uplink data (which can also be referred to as a transport block) generated by a user's operation or the like to the radio transceiver 10.

[0106] The upper layer processing section 14 performs processing of some or all of a Medium Access Control (MAC) layer, a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, and a Radio Resource Control (RRC) layer. The medium access control layer processing section 15 included in the upper layer processing section 14 performs processing of the MAC layer. The medium access control layer processing section 15 performs control of transmission of a scheduling request based on various setting information / parameters managed by the radio resource control layer processing section 16. The radio resource control layer processing section 16 included in the upper layer processing section 14 performs processing of the RRC layer (radio resource control layer). The radio resource control layer processing section 16 performs management of various setting information / parameters of the device itself.

[0107] The radio resource control layer processing section 16 sets various setting information / parameters based on a signal of an upper layer received from a network-side device (such as a base station). That is, the radio resource control layer processing section 16 sets various setting information / parameters based on information indicating the various setting information / parameters received from the network-side device (such as a base station). The radio resource control layer processing section 16 controls (determines) resource allocation based on downlink control information received from the network-side device (such as a base station). The radio transceiver 10 performs processing of a physical layer such as modulation, demodulation, encoding, decoding, and the like. The radio transceiver 10 separates, demodulates, and decodes a signal received from the network-side device (such as a base station), and outputs the decoded information to the upper layer processing section 14. The radio transceiver 10 generates a transmission signal by modulating and encoding data, and transmits the signal to the network-side device (such as a base station).

[0108] The radio transceiver section 10 can have a function of receiving one or more reference signals in a certain cell. The radio transceiver section 10 can also have a function of transmitting a random access preamble through a PRACH opportunity determined by the upper layer processing section 14. The RF section 12 converts (down converts) a signal received via the antenna section 11 into a baseband signal through quadrature demodulation, and removes unnecessary frequency components. The RF section 12 outputs the processed analog signal to the baseband section. The baseband section 13 converts the analog signal input from the RF section 12 into a digital signal. The baseband section 13 removes a portion corresponding to a CP (Cyclic Prefix) from the converted digital signal, performs a Fast Fourier Transform (FFT) on the signal after the CP is removed, and extracts a signal in the frequency domain. The baseband section 13 performs an Inverse Fast Fourier Transform (IFFT) on data, generates an OFDM symbol, and generates a digital signal of the baseband by adding a CP to the generated OFDM symbol, and converts the digital signal of the baseband into an analog signal. The baseband section 13 outputs the converted analog signal to the RF section 12. The RF section 12 removes unnecessary frequency components from the analog signal input from the baseband section 13 using a low-pass filter, up-converts the analog signal into a carrier frequency, and transmits the analog signal via the antenna section 11. In addition, the RF section 12 amplifies power. In addition, the RF section 12 can also have a function of determining a transmission power of an uplink signal and / or an uplink channel transmitted in a cell in a zone. The RF section 12 is also referred to as a transmission power control section.

[0109] The embodiments of the present application can divide the functional modules of the electronic device and the like according to the above method examples. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The integrated module can be implemented in the form of hardware or in the form of a software functional module. It should be noted that the division of the modules in the embodiments of the present application is illustrative, and is only a logical functional division. Actual implementation can have another division manner.

[0110] From the above description of the embodiments, those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above functional modules is exemplified. In actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0111] Each function unit in each embodiment of the embodiments of the present application can be integrated in one processing unit, or each unit can exist independently physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware, or in the form of a software function unit.

[0112] When the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such an understanding, the technical solutions of the embodiments of the present application essentially, or the part that contributes to the prior art, or all or a part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions for causing a computer device (which can 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 embodiments of the present application. The foregoing storage medium includes: a flash memory, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disk, and various other media that can store program codes.

[0113] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for activating a bandwidth portion, characterized in that, Applied to narrowband UEs, the method includes: The second bandwidth portion is determined to be used, the second bandwidth portion including at least a second uplink bandwidth portion, the second bandwidth portion being dedicated to the narrowband UE; The determination of using the second bandwidth portion includes: Send Msg1, Msg3, or Msg4-HARQ-ACK within the second uplink bandwidth portion.

2. The method according to claim 1, characterized in that, Determining the use of the second bandwidth portion includes: Based on the high-level parameters, the second uplink bandwidth portion is determined to be used.

3. The method according to claim 1, characterized in that, The second bandwidth portion also includes a second downlink bandwidth portion. The second downlink bandwidth portion is activated or used after Msg1 is sent.

4. An activation device for a bandwidth portion, comprising a determining module for... It is determined that a second bandwidth portion will be used, the second bandwidth portion including a second uplink bandwidth portion, the second bandwidth portion being dedicated to the narrowband UE; The determination of using the second bandwidth portion includes: Send Msg1, Msg3, or Msg4-HARQ-ACK within the second uplink bandwidth portion.

5. A chip module comprising the activation device as described in claim 4.

6. An electronic device, characterized in that, The electronic device further includes a processor and a storage device, the storage device storing an application program or program instructions, which, when executed by the processor, cause the electronic device to perform the activation method according to any one of claims 1-3.

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