Initial access bwp determination method and apparatus, storage medium, terminal device

Abstract

The application provides an initial access BWP determination method and device, a storage medium and a terminal device. The initial access BWP determination method comprises the following steps: receiving system information, wherein the system information comprises configuration information of an initial BWP, and the configuration information of the initial BWP comprises configuration information of a first initial BWP and configuration information of a second initial BWP; and selecting an initial access BWP according to the configuration information of the first initial BWP and the configuration information of the second initial BWP. The application provides a selection scheme of the initial access BWP, so as to improve the access efficiency of the terminal device.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an initial access BWP determination method and apparatus, storage medium, and terminal equipment. Background Technology

[0002] In New Radio (NR) Release 17 (R17) systems, low-capability terminal devices with a maximum bandwidth of 20 MHz were introduced. These terminal devices are called Reduced Cap (RedCap) terminal devices. The maximum bandwidth in NR systems can be configured to 100 MHz, which is clearly unsupported by Reduced Cap terminal devices. Therefore, the protocol introduces a separate initial bandwidth part (BWP) for Reduced Cap terminal devices, meaning that the system information configures an initial BWP of less than or equal to 20 MHz for them.

[0003] A 20MHz bandwidth capability allows degraded terminal devices to achieve speeds of 80Mbps. For very low-end use cases (such as sensor networks requiring only a few Mbps), such high speeds are unnecessary. Standards organizations may introduce degraded terminal devices with even lower bandwidth capabilities in the next release, such as bandwidth reduced to 5MHz. In this case, there are currently two possible solutions to address the initial access BWP issue. The first is for degraded terminal devices supporting 5MHz to share the BWP with those supporting 20MHz in Release 17, meaning no additional independent BWP is introduced. This also implies that when configuring an independent BWP for degraded terminal devices, the base station can only configure a maximum bandwidth of 5MHz. The second is to introduce a separate BWP for 5MHz degraded terminal devices, independent of the BWPs for degraded terminal devices in Release 17 and ordinary terminals. The second approach makes system configuration very complex, and the selection of BWPs becomes complicated. The first approach, which achieves coexistence without modifying existing protocols, is a more suitable solution.

[0004] However, the first approach limits the capability of terminal devices that support reduced 20MHz, and restricting all terminal devices with reduced capabilities to within 5MHz would cause severe congestion on the 5MHz BWP, which would have a certain impact on access efficiency. Summary of the Invention

[0005] This application provides a communication method and apparatus, and offers an initial access scheme for BWP to improve the access efficiency of terminal devices.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] In a first aspect, an initial access BWP determination method is provided for use in a first capability terminal device. The initial access BWP determination method includes: receiving system information, the system information including configuration information of an initial BWP, the configuration information of the initial BWP including configuration information of a first initial BWP and configuration information of a second initial BWP; and selecting an initial access BWP based on the configuration information of the first initial BWP and the configuration information of the second initial BWP.

[0008] Optionally, the first initial BWP is configured for a second capability terminal device, and the first initial BWP includes at least a first uplink initial BWP and / or a first downlink initial BWP; the second initial BWP is configured for a third capability terminal device, and the second initial BWP includes at least a second uplink initial BWP and / or a second downlink initial BWP.

[0009] Optionally, the selection of the initial access BWP includes: if the first downlink initial BWP is greater than the second downlink initial BWP, then the first downlink initial BWP is selected as the downlink initial access BWP, or the downlink BWP including control resource set 0 is selected as the downlink initial access BWP; if the first uplink initial BWP is greater than the second uplink initial BWP, and the first uplink initial BWP does not exceed the maximum bandwidth supported by the first capability terminal device, then the first uplink initial BWP is selected as the uplink initial access BWP.

[0010] Optionally, selecting the first downlink initial BWP as the downlink initial access BWP includes: if the first downlink initial BWP is greater than the second downlink initial BWP, and the first downlink initial BWP does not exceed the maximum bandwidth supported by the first capability terminal device, then the first downlink initial BWP is selected as the downlink initial access BWP.

[0011] Optionally, selecting the downlink BWP including control resource set 0 as the downlink initial access BWP includes: if the first downlink initial BWP exceeds the maximum bandwidth supported by the first capability terminal device, and the control resource set 0 included in the first downlink initial BWP is selected as the downlink initial access BWP.

[0012] Optionally, in time-division duplex mode, the first uplink initial BWP is aligned with the center frequency of control resource set 0.

[0013] Optionally, the selection of the initial access BWP includes: determining whether the first uplink initial BWP is configured with random access resources for a terminal device with reduced capabilities; if the first uplink initial BWP is configured with random access resources for a terminal device with reduced capabilities, then the first uplink initial BWP is selected as the uplink initial access bandwidth, and the first downlink initial BWP or the control resource set 0 included in the first downlink initial BWP is selected as the downlink initial access BWP.

[0014] Optionally, the system information may further include initial bandwidth indication signaling, which is used to indicate whether the first capability terminal device uses the first initial BWP.

[0015] Optionally, the selection of the initial access BWP includes: when the initial bandwidth indication signaling indicates the use of the first initial BWP, selecting the first uplink initial BWP as the uplink initial access BWP, and selecting the first downlink initial BWP or the control resource set 0 included in the first downlink initial BWP as the downlink initial access BWP.

[0016] Optionally, the first capability terminal device supports a maximum bandwidth of 20MHz, and the second initial BWP supports a maximum bandwidth of 5MHz.

[0017] Secondly, this application also provides an initial access BWP determination device, which includes: a communication module for receiving system information, the system information including configuration information of an initial BWP, the configuration information of the initial BWP including configuration information of a first initial BWP and configuration information of a second initial BWP; and a processing module for selecting an initial access BWP based on the configuration information of the first initial BWP and the configuration information of the second initial BWP.

[0018] Thirdly, a computer-readable storage medium is provided having a computer program stored thereon, the computer program being executed by a processor to perform the method provided in the first aspect.

[0019] Fourthly, a communication device is provided, including a memory and a processor, wherein the memory stores a computer program executable on the processor, and the processor executes the computer program to perform the method provided in the first aspect.

[0020] Fifthly, a terminal device is provided, including a memory and a processor, wherein the memory stores a computer program executable on the processor, and the processor executes the computer program to perform the method provided in the first aspect.

[0021] In a sixth aspect, a computer program product is provided, on which a computer program is stored, the computer program being executed by a processor to perform the method provided in the first aspect.

[0022] In a seventh aspect, a communication system is provided, including terminal equipment and network equipment.

[0023] Compared with the prior art, the technical solution of this application embodiment has the following beneficial effects:

[0024] In this application's technical solution, a first-capable terminal device receives system information to obtain first and second initial BWP configuration information. The first-capable terminal device can select an initial access BWP based on the configuration information of the first and second initial BWPs. This technical solution allows the first-capable terminal device to flexibly select an initial access BWP from the first and second initial BWPs; especially when the initial BWPs configured by the network equipment for terminal devices with reduced capacity are congested, the first-capable terminal device has the opportunity to access other BWPs, improving access efficiency.

[0025] Furthermore, when the first uplink initial BWP is greater than the second uplink initial BWP, and the first uplink initial BWP does not exceed the maximum bandwidth supported by the first capability terminal device, the first capability terminal device selects the first uplink initial BWP as the uplink initial access BWP, and the same applies to the downlink initial access BWP. This technical solution enables the first capability terminal device to reside on the initial BWP configured for a regular terminal device (i.e., the second capability terminal device), improving the access efficiency of the first capability terminal device.

[0026] Furthermore, when the first downlink initial BWP exceeds the maximum bandwidth supported by the first capable terminal device, and the control resource set 0 included in the first downlink initial BWP is selected by the first capable terminal device as the downlink initial access BWP. In the case where the first downlink initial BWP exceeds the maximum bandwidth supported by the first capable terminal device, since the bandwidth of control resource set 0 is less than 20MHz, the first capable terminal device can reside in control resource set 0. This ensures smooth network access for the first capable terminal device even when the initial BWP configured by the network device for the terminal device with reduced capabilities is congested. Attached Figure Description

[0027] Figure 1 This is an interactive flowchart of an initial access BWP determination method provided in an embodiment of this application;

[0028] Figure 2 This is an interactive flowchart of another initial access BWP determination method provided in the embodiments of this application;

[0029] Figure 3This is a schematic diagram of the structure of an initial access BWP determination device provided in an embodiment of this application;

[0030] Figure 4 This is a schematic diagram of the hardware structure of a communication device provided in an embodiment of this application. Detailed Implementation

[0031] The communication systems applicable to the embodiments of this application include, but are not limited to, long-term evolution (LTE) systems, 5th-generation (5G) systems, NR systems, and future evolution systems, or multiple converged communication systems. The 5G system can be a non-standalone (NSA) 5G system or a standalone (SA) 5G system. The technical solutions of this application are also applicable to different network architectures, including but not limited to relay network architectures, dual-link architectures, and vehicle-to-everything (V2X) architectures.

[0032] This application primarily relates to communication between terminal devices and network devices. Specifically:

[0033] The network device in this application embodiment can also be called an access network device, for example, it can be a base station (BS) (also called a base station device). A network device is a device deployed in a radio access network (RAN) to provide wireless communication functions. For example, in second-generation (2G) networks, equipment providing base station functionality includes base transceiver stations (BTS); in third-generation (3G) networks, it includes NodeBs; in fourth-generation (4G) networks, it includes evolved NodeBs (eNBs); in wireless local area networks (WLANs), it is an access point (AP); in NR (Radio Frequency Identification), it includes next-generation nodebase stations (gNBs) and further evolved NodeBs (ng-eNBs). The gNB and terminal devices communicate using NR technology, while the ng-eNB and terminal devices communicate using Evolved Universal Terrestrial Radio Access (E-UTRA) technology. Both gNBs and ng-eNBs can connect to the 5G core network. The network equipment in this application embodiment also includes equipment providing base station functionality in future new communication systems.

[0034] In this application, "terminal equipment" can refer to various forms of access terminals, user units, user stations, mobile stations, mobile stations (MS), remote stations, remote terminals, mobile devices, user terminals, wireless communication equipment, user agents, or user devices. Terminal equipment can also be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), handheld devices with wireless communication capabilities, computing devices, or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal equipment in future 5G networks, or terminal equipment in future evolved Public Land Mobile Networks (PLMNs), etc. This application does not limit the scope of these terms. Terminal equipment can also be called user equipment (UE), terminal, etc.

[0035] Based on the current protocol, when a network device configures a dedicated BWP for a terminal device with reduced capabilities, the terminal device with reduced capabilities must reside on that BWP, regardless of its bandwidth. Therefore, when a network device configures a dedicated 5MHz BWP for a terminal device with reduced capabilities, the terminal device supporting 20MHz reduced capabilities must also reside on that 5MHz BWP.

[0036] As described in the background section, the first approach limits the capability of terminal devices with reduced capability to 20MHz. Furthermore, if all terminal devices with reduced capability are restricted to within 5MHz, it will cause severe congestion on the 5MHz BWP, which will have a certain impact on access efficiency.

[0037] In this application's technical solution, a first-capable terminal device receives system information to obtain first and second initial BWP configuration information. The first-capable terminal device can select an initial access BWP based on the configuration information of the first and second initial BWPs. This technical solution allows the first-capable terminal device to flexibly select an initial access BWP from the first and second initial BWPs; especially when the initial BWPs configured by the network equipment for terminal devices with reduced capacity are congested, the first-capable terminal device has the opportunity to access other BWPs, improving access efficiency.

[0038] This application provides a method, see [link to document]. Figure 1The method provided in this application includes steps 101 and 102.

[0039] Step 101: The network device sends system information, which includes the configuration information of the initial BWP. The configuration information of the initial BWP includes the configuration information of the first initial BWP and the configuration information of the second initial BWP.

[0040] In this embodiment, the network device can configure initial BWPs (Browser Window Mounts) for both ordinary-capability terminal devices and degraded-capability terminal devices, namely, a first initial BWP and a second initial BWP, and send the configuration information of the initial BWPs out through system information. Here, the ordinary-capability terminal device is defined relative to the degraded-capability terminal device, and the maximum bandwidth supported by the ordinary-capability terminal device is greater than the maximum bandwidth supported by the degraded-capability terminal device.

[0041] Accordingly, the first-capability terminal device receives system information. Specifically, the first-capability terminal device is a terminal device with reduced capabilities. More specifically, the maximum bandwidth supported by the first-capability terminal device is 20MHz.

[0042] It should be noted that the maximum bandwidth supported by the first-capability terminal device can be any other feasible bandwidth, but the maximum bandwidth supported by the first-capability terminal device is not the minimum maximum bandwidth supported by the terminal device with reduced capability as specified in the communication standard protocol. For example, if the communication standard protocol specifies that the maximum bandwidth supported by the terminal device with reduced capability is 20MHz and 5MHz, the maximum bandwidth supported by the first-capability terminal device is necessarily not 5MHz.

[0043] In one specific embodiment, the system information may be a System Information Block (SIB).

[0044] Step 102: The first capability terminal device selects an initial access BWP based on the configuration information of the first initial BWP and the configuration information of the second initial BWP.

[0045] In a non-limiting embodiment, the first initial BWP is configured for a second capability terminal device, and the first initial BWP includes at least a first uplink initial BWP and / or a first downlink initial BWP; the second initial BWP is configured for a third capability terminal device, and the second initial BWP includes at least a second uplink initial BWP and / or a second downlink initial BWP.

[0046] In this embodiment, the second-capability terminal device refers to a terminal device with normal capabilities; the third-capability terminal device refers to a terminal device with reduced capabilities, and the maximum bandwidth supported by the third-capability terminal device is less than the maximum bandwidth supported by the first-capability terminal device. For example, the maximum bandwidth supported by the first-capability terminal device is 20MHz, and the maximum bandwidth supported by the third-capability terminal device is 5MHz.

[0047] Because the network device configures the second initial BWP for the degraded terminal device according to the minimum maximum bandwidth supported by all types of degraded terminal devices, that is, the network device configures the second initial BWP according to the maximum bandwidth supported by the third-capability terminal device, the second initial BWP is less than the maximum bandwidth supported by the first-capability terminal device, resulting in a lower access efficiency for the first-capability terminal device.

[0048] Compared to the prior art where the first capable terminal device must access the second initial BWP, the embodiments of this application allow the first capable terminal device to flexibly select the initial access BWP between the first initial BWP and the second initial BWP, giving the first capable terminal device the opportunity to access the first initial BWP and improving access efficiency.

[0049] It should be noted that the sequence number of each step in this embodiment does not represent a limitation on the execution order of each step.

[0050] It is understood that, in specific implementations, the initial access BWP determination method can be implemented using software programs, which run in a processor integrated within the chip or chip module. This method can also be implemented using a combination of software and hardware; this application does not impose any restrictions.

[0051] Figure 2 An interactive flowchart of another method for determining the initial access BWP is shown.

[0052] In step 201, when the first uplink initial BWP is greater than the second uplink initial BWP and the first uplink initial BWP does not exceed the maximum bandwidth supported by the first capability terminal device, the first capability terminal device selects the first uplink initial BWP as the uplink initial access BWP.

[0053] Accordingly, the first capability terminal device can determine the size relationship between the first uplink initial BWP and the second uplink initial BWP, as well as the size relationship between the first uplink initial BWP and the maximum bandwidth supported by the first capability terminal device.

[0054] In this embodiment, the first capability terminal device selects the first uplink initial BWP as the uplink initial access BWP only when conditions 1 (the first uplink initial BWP is greater than the second uplink initial BWP) and 2 (the first uplink initial BWP does not exceed the maximum bandwidth supported by the first capability terminal device) are met. This is because if condition 1 is not met, the first capability terminal device will also cause congestion when accessing the first uplink initial BWP, so the first capability terminal device will not access the first uplink initial BWP. If condition 2 is not met, the first capability terminal device will not be able to access the first uplink initial BWP, so the first capability terminal device will not access the first uplink initial BWP either.

[0055] In step 202, when the first downlink initial BWP is greater than the second downlink initial BWP and the first downlink initial BWP does not exceed the maximum bandwidth supported by the first capability terminal device, the first capability terminal device selects the first downlink initial BWP as the downlink initial access BWP.

[0056] In step 203, when the first downlink initial BWP exceeds the maximum bandwidth supported by the first capability terminal device, and the control resource set 0 included in the first downlink initial BWP is selected by the first capability terminal device as the downlink initial access BWP.

[0057] In this embodiment, the first terminal device may select the first downlink initial BWP as the downlink initial access BWP, or select the downlink BWP including the control resource set 0 as the downlink initial access BWP.

[0058] In the specific implementation of step 202, the first capability terminal device selects the first downlink initial BWP as the downlink initial access BWP only when conditions 3 (the first downlink initial BWP is greater than the second downlink initial BWP) and 4 (the first downlink initial BWP does not exceed the maximum bandwidth supported by the first capability terminal device) are met. This is because if condition 3 is not met, the first capability terminal device will also cause congestion when accessing the first downlink initial BWP, so the first capability terminal device will not access the first downlink initial BWP. If condition 4 is not met, the first capability terminal device will not be able to access the first downlink initial BWP, so the first capability terminal device will not access the first downlink initial BWP either.

[0059] In the specific implementation of step 203, if the first downlink initial BWP exceeds the maximum bandwidth supported by the first capability terminal device, then the first capability terminal device is unable to access the first downlink initial BWP. However, the first downlink initial BWP includes control resource set 0, and the bandwidth of control resource set 0 does not exceed the maximum bandwidth supported by the first capability terminal device, for example, the bandwidth of control resource set 0 is less than 20MHz. In this case, the first capability terminal device can select control resource set 0 included in the first downlink initial BWP as the downlink initial access BWP, that is, the first capability terminal device accesses control resource set 0.

[0060] Furthermore, in time-division duplex mode, the first uplink initial BWP is aligned with the center frequency of control resource set 0. However, in frequency-division duplex mode, the first uplink initial BWP may not be aligned with the center frequency of control resource set 0.

[0061] For the first-capability terminal device, it can directly select the initial access BWP based on the configuration information of the first initial BWP and the second initial BWP without any judgment; alternatively, it can determine whether the first initial BWP can be selected as the initial access BWP before selecting the initial access BWP. The first-capability terminal device can use the following two methods to make this determination.

[0062] Method 1: The first capability terminal device determines whether it can select the first initial BWP as the initial access BWP based on random access resources.

[0063] In this embodiment, the network device can configure random access resources, namely the Physical Random Access Channel (PRACH), for the degraded terminal device in the first uplink initial BWP. If random access resources are configured for the degraded terminal device in the first uplink initial BWP, it means that the degraded terminal device can initiate random access in this BWP.

[0064] The first capability terminal device determines whether the first uplink initial BWP is configured with random access resources for a reduced capability terminal device. If the first uplink initial BWP is configured with random access resources for a reduced capability terminal device, the first capability terminal device selects the first uplink initial BWP as the uplink initial access bandwidth, and selects the first downlink initial BWP or the control resource set 0 included in the first downlink initial BWP as the downlink initial access BWP.

[0065] It is understood that the specific implementation method for selecting the downlink initial access BWP can refer to the aforementioned embodiments, and will not be repeated here.

[0066] Method 2: The first capability terminal device determines whether it can select the first initial BWP as the initial access BWP based on the initial bandwidth indication signaling.

[0067] In this embodiment, the network device can configure initial bandwidth indication signaling for the degraded terminal device in the system information. The initial bandwidth indication signaling is used to indicate whether the first-capability terminal device uses the first initial BWP.

[0068] When the first capability terminal device receives system information, and the initial bandwidth indication signaling in the system information indicates that the first capability terminal device can use the first initial BWP, the first capability terminal device selects the first uplink initial BWP as the uplink initial access bandwidth, and selects the first downlink initial BWP or the control resource set 0 included in the first downlink initial BWP as the downlink initial access BWP.

[0069] When the initial bandwidth indication signaling in the system information indicates that the first capability terminal device cannot use the first initial BWP, the first capability terminal device selects the second initial BWP as the initial access BWP.

[0070] For more specific implementations of the embodiments of this application, please refer to the foregoing embodiments, which will not be repeated here.

[0071] In the following application scenarios, the first capability terminal device is a terminal device that supports a reduced capability with a maximum bandwidth of 20MHz, the second capability terminal device is a terminal device with ordinary capability, and the third capability terminal device is a terminal device that supports a reduced capability with a maximum bandwidth of 5MHz.

[0072] Application Scenario 1: The first uplink initial BWP and the first downlink initial BWP configured by the SIB are both less than or equal to 20MHz, and the second uplink initial BWP and the second downlink initial BWP configured by the SIB are both less than or equal to 5MHz.

[0073] The first capability terminal device defaults to selecting the first uplink initial BWP as the uplink initial access BWP and the first downlink initial BWP as the downlink initial access BWP.

[0074] Application Scenario 2: The first uplink initial BWP and the first downlink initial BWP configured in the SIB are both less than or equal to 20MHz, and the second uplink initial BWP and the second downlink initial BWP configured in the SIB are both less than or equal to 5MHz. The network device can configure random access resources for degraded terminal devices in the first uplink initial BWP.

[0075] If the first uplink initial BWP configures random access resources for the degraded terminal device, then the first-capable terminal device selects the first uplink initial BWP as the uplink initial access BWP and the first downlink initial BWP as the downlink initial access BWP. If the first uplink initial BWP does not configure random access resources for the degraded terminal device, then the first-capable terminal device selects the second uplink initial BWP as the uplink initial access BWP and the second downlink initial BWP as the downlink initial access BWP.

[0076] Application Scenario 3: The first uplink initial BWP and the first downlink initial BWP configured by the SIB are both less than or equal to 20MHz, and the second uplink initial BWP and the second downlink initial BWP configured by the SIB are both less than or equal to 5MHz. Network devices can configure initial bandwidth indication signaling for degraded terminal devices in the system information.

[0077] If the initial bandwidth indication signaling in the system information indicates that the first capability terminal device can use the first initial BWP, then the first capability terminal device selects the first uplink initial BWP as the uplink initial access bandwidth and selects the first downlink initial BWP as the downlink initial access BWP. If the initial bandwidth indication signaling in the system information indicates that the first capability terminal device cannot use the first initial BWP, then the first capability terminal device selects the second initial BWP as the initial access BWP.

[0078] Application Scenario 4: The first downlink initial BWP configured by the SIB is greater than 20MHz, the first uplink initial BWP is less than or equal to 20MHz, the first downlink initial BWP includes control resource set 0, and the second uplink initial BWP and the second downlink initial BWP configured by the SIB are both less than or equal to 5MHz.

[0079] The first capability terminal device defaults to selecting the first uplink initial BWP as the uplink initial access BWP and the frequency range where control resource set 0 is located as the downlink initial access BWP.

[0080] Application Scenario 5: The first downlink initial BWP configured by the SIB is greater than 20MHz, and the first uplink initial BWP is less than or equal to 20MHz. The first downlink initial BWP includes control resource set 0. The second uplink initial BWP and the second downlink initial BWP configured by the SIB are both less than or equal to 5MHz. Network devices can configure random access resources for degraded terminal devices in the first uplink initial BWP.

[0081] If the first uplink initial BWP configures random access resources for the degraded terminal device, then the first-capable terminal device selects the first uplink initial BWP as the uplink initial access BWP and selects the frequency range of control resource set 0 as the downlink initial access BWP. If the first uplink initial BWP does not configure random access resources for the degraded terminal device, then the first-capable terminal device selects the second uplink initial BWP as the uplink initial access BWP and selects the second downlink initial BWP as the downlink initial access BWP.

[0082] Application Scenario 6: The SIB-configured first downlink initial BWP is greater than 20MHz, and the first uplink initial BWP is less than or equal to 20MHz. The first downlink initial BWP includes control resource set 0. The SIB-configured second uplink initial BWP and second downlink initial BWP are both less than or equal to 5MHz. Network devices can configure initial bandwidth indication signaling for terminal devices with reduced capabilities in the system information.

[0083] If the initial bandwidth indication signaling in the system information indicates that the first capability terminal device can use the first initial BWP, then the first capability terminal device selects the first uplink initial BWP as the uplink initial access bandwidth and selects the frequency range where control resource set 0 is located as the downlink initial access BWP. If the initial bandwidth indication signaling in the system information indicates that the first capability terminal device cannot use the first initial BWP, then the first capability terminal device selects the second initial BWP as the initial access BWP.

[0084] Please refer to Figure 3 , Figure 3 An initial access BWP determination device 30 is shown, which may include:

[0085] The communication module 301 is used to receive system information, which includes the configuration information of the initial BWP, including the configuration information of the first initial BWP and the configuration information of the second initial BWP.

[0086] The processing module 302 is used to select an initial access BWP based on the configuration information of the first initial BWP and the configuration information of the second initial BWP.

[0087] In specific implementations, the aforementioned initial access BWP determination device 30 may correspond to a chip in the terminal device that has an initial access BWP determination function, such as a system-on-a-chip (SOC), a baseband chip, etc.; or correspond to a chip module in the terminal device that includes an initial access BWP determination function; or correspond to a chip module with a data processing function chip; or correspond to the terminal device itself.

[0088] Other relevant descriptions of the communication device initial access BWP determination device 30 can be found in the descriptions in the foregoing embodiments, and will not be repeated here.

[0089] Regarding the modules / units included in the various devices and products described in the above embodiments, they can be software modules / units, hardware modules / units, or a combination of both. For example, for devices and products applied to or integrated into a chip, all modules / units can be implemented using hardware methods such as circuits, or at least some modules / units can be implemented using software programs that run on a processor integrated within the chip, while the remaining (if any) modules / units can be implemented using hardware methods such as circuits. For devices and products applied to or integrated into a chip module, all modules / units can be implemented using hardware methods such as circuits. Different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or different components of the chip module, or at least some modules / units can be implemented using hardware methods such as circuits. The implementation is achieved through a software program that runs on a processor integrated within the chip module. The remaining modules / units (if any) can be implemented using hardware methods such as circuits. For various devices and products applied to or integrated into terminal equipment, all of their modules / units can be implemented using hardware methods such as circuits. Different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or different components within the terminal equipment. Alternatively, at least some modules / units can be implemented through a software program that runs on a processor integrated within the terminal equipment, while the remaining modules / units (if any) can be implemented using hardware methods such as circuits.

[0090] This application also discloses a storage medium, which is a computer-readable storage medium storing a computer program thereon. The computer program can be executed when it runs. Figures 1 to 3 The steps of the method shown are illustrated. The storage medium may include read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc. The storage medium may also include non-volatile memory or non-transitory memory, etc.

[0091] Please refer to Figure 4 This application also provides a schematic diagram of the hardware structure of a communication device. The device includes a processor 401, a memory 402, and a transceiver 403.

[0092] Processor 401 can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of the program according to the present application. Processor 401 may also include multiple CPUs, and processor 401 can be a single-core processor or a multi-core processor. Here, processor can refer to one or more devices, circuits, or processing cores used to process data (e.g., computer program instructions).

[0093] The memory 402 can be a ROM or other type of static storage device capable of storing static information and instructions, RAM or other type of dynamic storage device capable of storing information and instructions, or it can be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer. This application embodiment does not impose any limitations on this. The memory 402 can exist independently (in this case, the memory 402 can be located outside or inside the device) or it can be integrated with the processor 401. The memory 402 can include computer program code. The processor 401 is used to execute the computer program code stored in the memory 402 to implement the method provided in this application embodiment.

[0094] The processor 401, memory 402, and transceiver 403 are connected via a bus. The transceiver 403 is used to communicate with other devices or communication networks. Optionally, the transceiver 403 may include a transmitter and a receiver. The device in the transceiver 403 that implements the receiving function can be considered as a receiver, which is used to perform the receiving steps in the embodiments of this application. The device in the transceiver 403 that implements the transmitting function can be considered as a transmitter, which is used to perform the transmitting steps in the embodiments of this application.

[0095] when Figure 4 The schematic diagram shown illustrates the structure of the terminal device involved in the above embodiments. The processor 401 is used to control and manage the actions of the terminal device; for example, the processor 401 is used to support the terminal device in performing... Figure 1 Steps 101 and 102 in the text, or Figure 2 The actions performed by the terminal device in steps 201, 202, and 203, and / or other processes described in the embodiments of this application. The processor 401 can communicate with other network entities via the transceiver 403, for example, with the aforementioned network device. The memory 402 is used to store the program code and data of the terminal device.

[0096] when Figure 4 The schematic diagram shown illustrates the structure of the network device involved in the above embodiments. The processor 401 is used to control and manage the actions of the network device; for example, the processor 401 is used to support the network device in performing... Figure 1 Step 101 in the middle, or Figure 2 The processor 401 performs actions in step 101 and / or other processes described in the embodiments of this application. The processor 401 can communicate with other network entities via transceiver 403, for example, with the aforementioned terminal device. The memory 402 is used to store the program code and data of the network device.

[0097] In this application embodiment, a one-way communication link from the access network to the terminal device is defined as a downlink, and the data transmitted on the downlink is called downlink data. The transmission direction of the downlink data is called the downlink direction. On the other hand, a one-way communication link from the terminal device to the access network is defined as an uplink, and the data transmitted on the uplink is called uplink data. The transmission direction of the uplink data is called the uplink direction.

[0098] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article indicates that the preceding and following related objects have an "or" relationship.

[0099] In the embodiments of this application, "multiple" refers to two or more.

[0100] The descriptions of "first," "second," etc., appearing in the embodiments of this application are for illustrative purposes and to distinguish the objects being described. They have no order and do not indicate any special limitation on the number of devices in the embodiments of this application, nor do they constitute any limitation on the embodiments of this application.

[0101] In this application embodiment, "connection" refers to various connection methods such as direct connection or indirect connection to realize communication between devices. This application embodiment does not limit this in any way.

[0102] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means.

[0103] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0104] In the several embodiments provided in this application, it should be understood that the disclosed methods, apparatuses, and systems can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for example, the division of units is merely a logical functional division, and other division methods may exist in actual implementation; for example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0105] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0106] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can be physically included separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0107] The integrated unit implemented as a software functional unit described above can be stored in a computer-readable storage medium. This software functional unit, stored in a storage medium, includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute some steps of the methods described in the various embodiments of this application.

[0108] While this application discloses the above information, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of this application; therefore, the scope of protection of this application shall be determined by the scope defined in the claims.

Claims

1. A method for determining initial access BWP, characterized in that, Used in a first-capability terminal device, the method includes: Receive system information, the system information including configuration information of the initial BWP, the configuration information of the initial BWP including configuration information of the first initial BWP and configuration information of the second initial BWP; The initial access BWP is selected based on the configuration information of the first initial BWP and the configuration information of the second initial BWP; Wherein, the first initial BWP is configured for a second-capability terminal device, and the first initial BWP includes at least a first uplink initial BWP and / or a first downlink initial BWP; the second initial BWP is configured for a third-capability terminal device, and the second initial BWP includes at least a second uplink initial BWP and / or a second downlink initial BWP; the first-capability terminal device is a terminal device with reduced capabilities; the second-capability terminal device is a terminal device with normal capabilities; the third-capability terminal device is a terminal device with reduced capabilities; and the maximum bandwidth supported by the third-capability terminal device is less than the maximum bandwidth supported by the first-capability terminal device. The selection of the initial access BWP includes: If the first downlink initial BWP is greater than the second downlink initial BWP, then the first downlink initial BWP is selected as the downlink initial access BWP, or the downlink BWP including control resource set 0 is selected as the downlink initial access BWP. If the first uplink initial BWP is greater than the second uplink initial BWP, and the first uplink initial BWP does not exceed the maximum bandwidth supported by the first capability terminal device, then the first uplink initial BWP is selected as the uplink initial access BWP.

2. The initial access BWP determination method according to claim 1, characterized in that, The step of selecting the first downlink initial BWP as the downlink initial access BWP includes: If the first downlink initial BWP is greater than the second downlink initial BWP, and the first downlink initial BWP does not exceed the maximum bandwidth supported by the first capability terminal device, then the first downlink initial BWP is selected as the downlink initial access BWP.

3. The initial access BWP determination method according to claim 1, characterized in that, The selection of the downlink BWP including control resource set 0 as the downlink initial access BWP includes: If the first downlink initial BWP exceeds the maximum bandwidth supported by the first capability terminal device, and the first downlink initial BWP includes control resource set 0, then the control resource set 0 included in the first downlink initial BWP is selected as the downlink initial access BWP.

4. The initial access BWP determination method according to claim 1, characterized in that, In time-division duplex mode, the first uplink initial BWP is aligned with the center frequency of control resource set 0.

5. The initial access BWP determination method according to claim 1, characterized in that, The selection of the initial access BWP includes: Determine whether the first uplink initial BWP is configured with random access resources for a terminal device with reduced capabilities; If the first uplink initial BWP is configured with random access resources for a terminal device with reduced capabilities, then the first uplink initial BWP is selected as the uplink initial access bandwidth, and the first downlink initial BWP or the control resource set 0 included in the first downlink initial BWP is selected as the downlink initial access BWP.

6. The initial access BWP determination method according to claim 1, characterized in that, The system information also includes initial bandwidth indication signaling, which is used to indicate whether the first capability terminal device uses the first initial BWP.

7. The initial access BWP determination method according to claim 6, characterized in that, The selection of the initial access BWP includes: When the initial bandwidth indication signaling indicates the use of the first initial BWP, the first uplink initial BWP is selected as the uplink initial access BWP, and the first downlink initial BWP or the control resource set 0 included in the first downlink initial BWP is selected as the downlink initial access BWP.

8. The initial access BWP determination method according to any one of claims 1 to 7, characterized in that, The first capability terminal device supports a maximum bandwidth of 20MHz, and the second initial BWP supports a maximum bandwidth of 5MHz.

9. An initial access BWP determination device, characterized in that, Applied to a first-capability terminal device, the device includes: A communication module is used to receive system information, the system information including configuration information of an initial BWP, the configuration information of the initial BWP including configuration information of a first initial BWP and configuration information of a second initial BWP; The processing module is configured to select an initial access BWP based on the configuration information of the first initial BWP and the configuration information of the second initial BWP; Wherein, the first initial BWP is configured for a second-capability terminal device, and the first initial BWP includes at least a first uplink initial BWP and / or a first downlink initial BWP; the second initial BWP is configured for a third-capability terminal device, and the second initial BWP includes at least a second uplink initial BWP and / or a second downlink initial BWP; the first-capability terminal device is a terminal device with reduced capabilities; the second-capability terminal device is a terminal device with normal capabilities; the third-capability terminal device is a terminal device with reduced capabilities; and the maximum bandwidth supported by the third-capability terminal device is less than the maximum bandwidth supported by the first-capability terminal device. The processing module is also used for: If the first downlink initial BWP is greater than the second downlink initial BWP, then the first downlink initial BWP is selected as the downlink initial access BWP, or the downlink BWP including control resource set 0 is selected as the downlink initial access BWP. If the first uplink initial BWP is greater than the second uplink initial BWP, and the first uplink initial BWP does not exceed the maximum bandwidth supported by the first capability terminal device, then the first uplink initial BWP is selected as the uplink initial access BWP.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, The computer program, when run by the processor, performs the steps of determining the initial access BWP as described in any one of claims 1 to 8.

11. A terminal device, comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, characterized in that, When the processor runs the computer program, it performs the steps of determining the initial access BWP as described in any one of claims 1 to 8.

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