Method and apparatus for random access, and communication system

Abstract

Embodiments of the present application provide an apparatus for random access, and a communication system. The apparatus comprises a first processing unit. The first processing unit controls a terminal device to perform the following operations: receiving first configuration information used for configuring a random access resource for beam failure recovery and / or a system information request and / or early uplink (UL) synchronization and / or an additional physical cell identifier (PCI); and using the random access resource to perform non-contention based random access.

Description

Method, apparatus and communication system for random access TECHNICAL FIELD

[0001] The present application relates to the field of communication technology. BACKGROUND

[0002] The random access procedure includes a contention based random access procedure and a non-contention based random access procedure. In the contention based random access procedure, a user equipment (UE) selects a preamble and a physical random access channel (PRACH) resource for random access in the available preamble and PRACH resource configured by the network side (for example, a base station). In the non-contention based random access procedure, a user equipment (UE) uses a specific random access preamble and a physical random access channel (PRACH) resource configured by the network side (for example, a base station) for random access.

[0003] At present, with the increasing growth of new services and new device types, the requirements for coverage, capacity, latency, etc. of random access are getting higher and higher, and further enhancement of random access is needed. For example, for time division duplex (TDD) frequency bands, the uplink transmission in the random access procedure can only occur in the uplink time period, and when limited or less uplink time periods are allocated, there will be problems of small coverage, small capacity and large latency of random access.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely describing the technical scheme of the present application, and for the convenience of understanding by those skilled in the art. The above technical scheme cannot be considered as known to those skilled in the art only because it is described in the background section of the present application.

[0005] SUMMARY

[0006] To improve the capacity, coverage and reduce the latency of uplink transmission, in TDD frequency, the network device can work in full duplex mode at certain time positions, for example, the network device receives and transmits simultaneously in different frequency domain resources in the corresponding carrier (of TDD frequency). This working mode is, for example, called sub-band non-overlapping full duplex (SBFD), but is not limited thereto. The network device can indicate to the terminal device which time domain resources the network device receives and transmits simultaneously, and in which part of the frequency domain resources it receives and in which part of the frequency domain resources it transmits, so that the terminal device can receive or transmit signals in the corresponding resources. At present, there is no specific method on how to support the terminal device to use the time domain resources for non-contention random access for beam failure recovery or system information request or early uplink synchronization (early UL synchronization) or additional physical cell identifier (additional PCI).

[0007] To solve at least one of the above problems, the embodiments of the present application provide a method, apparatus and communication system for non-contention random access for beam failure recovery or system information request or early uplink synchronization (early UL synchronization) or additional physical cell identifier (additional PCI).

[0008] According to an aspect of the embodiments of the present application, a random access method is provided, applied to a terminal device, the random access method comprising:

[0009] receiving first configuration information for configuring random access resources for handover and / or resynchronization and / or beam failure recovery and / or system information request and / or early uplink synchronization (early UL synchronization) and / or additional physical cell identifier (additional PCI); and

[0010] performing non-contention random access (CFRA) using the random access resources,

[0011] wherein the random access resources include PRACH resources, and a first PRACH resource in the PRACH resources is enabled, wherein the first PRACH resource is in a first symbol and overlaps with a DL first symbol, and / or the first PRACH resource includes a second PRACH resource in the DL first symbol and / or a third PRACH resource having one part in the DL first symbol and another part in a Flexible first symbol; or

[0012] a fourth PRACH resource of the PRACH resources is enabled, wherein the fourth PRACH resource comprises a fifth PRACH resource and / or a sixth PRACH resource in the first symbol and / or a seventh PRACH resource in the flexible second symbol and / or the UL second symbol,

[0013] the sixth PRACH resource starts from the first symbol and overlaps with the second symbol, or starts from the first symbol to the end of the second symbol, or starts from the first symbol to the end of the flexible second symbol or the UL second symbol, or overlaps with the first symbol and the second symbol, or overlaps with the first symbol and the flexible second symbol or the UL second symbol, or overlaps with the first symbol and the second symbol except the DL second symbol.

[0014] According to another aspect of the embodiments of the present application, a device for random access is provided, which is applied to a terminal device, and the device comprises a first processing unit, which controls the terminal device to perform the following operations:

[0015] receiving first configuration information for configuring random access resources for handover and / or resynchronization and / or beam failure recovery and / or system information request and / or early UL synchronization and / or additional PCI; and

[0016] performing non-contention random access (CFRA) using the random access resources,

[0017] wherein the random access resources comprise PRACH resources, a first PRACH resource of the PRACH resources is enabled, wherein the first PRACH resource is in the first symbol and overlaps with the DL first symbol, and / or the first PRACH resource comprises a second PRACH resource in the DL first symbol and / or a third PRACH resource which is partly in the DL first symbol and partly in the flexible first symbol; or

[0018] a fourth PRACH resource of the PRACH resources is enabled, wherein the fourth PRACH resource comprises a fifth PRACH resource and / or a sixth PRACH resource in the first symbol and / or a seventh PRACH resource in the flexible second symbol and / or the UL second symbol,

[0019] The sixth PRACH resource starts from the first symbol and overlaps with the second symbol, or starts from the first symbol and ends at the second symbol, or starts from the first symbol and ends at the flexible second symbol or the UL second symbol, or overlaps with the first symbol and the second symbol, or overlaps with the first symbol and the flexible second symbol or the UL second symbol, or overlaps with the first symbol and the second symbol except the DL second symbol.

[0020] One of the beneficial effects of the embodiments of the present application is that, in the case that the network device works in the full duplex mode (simultaneous receiving and transmitting), the terminal device can use the corresponding resource for random access, so as to support non-contention-based random access outside the uplink time period, thereby improving the capacity and coverage of random access, reducing the latency of random access, and improving the resource allocation flexibility and resource utilization.

[0021] Specific embodiments of the application are disclosed herein, and represented in the accompanying drawings, indicating the manner in which the principles of the application can be employed. It is understood that the embodiments of the application are not limited in scope to the specific embodiments disclosed herein. Embodiments of the application include many changes, modifications, and equivalents within the spirit and scope of the appended claims.

[0022] Features described and / or illustrated with respect to one implementation can be used in one or more other implementations in the same or similar manner, in combination with or in place of features in other implementations.

[0023] It should be emphasized that the term "comprises / comprising" when used in this specification is taken to mean the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof. BRIEF DESCRIPTION OF DRAWINGS

[0024] Elements and features of the embodiments of the application described in one or more attachments or implementations can be combined with elements and features shown in one or more other attachments or implementations. Also, in the drawings, like reference numerals designate corresponding parts throughout the several views, and can be used to indicate corresponding parts in more than one implementation.

[0025] The included drawings are included to provide a further understanding of the embodiments of the application, and constitute a part of the specification, illustrate embodiments of the application, and together with the description serve to explain the principles of the application. It is expressly understood that the drawings are only some embodiments of the application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor. In the drawings:

[0026] FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

[0027] FIG. 2 is a schematic diagram of a method of random access according to an embodiment of the present application;

[0028] FIG. 3 is a schematic diagram of a time domain resource type according to the present application;

[0029] FIG. 4 is a schematic diagram of a frequency domain resource type according to the present application;

[0030] FIG. 5 is another schematic diagram of a frequency domain resource type according to the present application;

[0031] FIG. 6 is yet another schematic diagram of a frequency domain resource type according to the present application;

[0032] FIG. 7 is a schematic diagram of PRACH resources for a second random access;

[0033] FIG. 8 is a schematic diagram of PRACH resources for a third random access;

[0034] FIG. 9 is a schematic diagram of an apparatus for random access according to an embodiment of the present application;

[0035] FIG. 10 is a schematic diagram of a method of random access according to an embodiment of the present application;

[0036] FIG. 11 is a schematic diagram of an apparatus for random access according to an embodiment of the present application;

[0037] FIG. 12 is a schematic diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0038] The foregoing and other features of the present application will become apparent to those skilled in the art from the following description with reference to the accompanying drawings. In the description and drawings, particular embodiments of the present application are disclosed in detail. It should be understood that the present application is not limited to the embodiments described, but instead includes all modifications, variations, and equivalents that fall within the scope of the appended claims.

[0039] In the embodiments of the present application, the terms "first", "second", and the like are used to distinguish different elements from one another, but do not indicate spatial arrangement or temporal order of the elements, and the elements should not be limited by these terms. The term "and / or" includes any one and all combinations of the associated listed terms. The terms "comprise", "include", "have", and the like, mean the presence of the stated feature, element, component, or assembly, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.

[0040] In the embodiments of the present application, the singular form "a", "an", and "the" include the plural form, should be broadly understood as "one" or "a kind of", and not limited to the meaning of "one"; in addition, the term "said" should be understood as including both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least partially according to", and the term "based on" should be understood as "at least partially based on", unless the context clearly indicates otherwise.

[0041] In the embodiments of the present application, the term "communication network" or "wireless communication network" can refer to a network that conforms to any communication standard, such as Long Term Evolution (LTE), LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), etc.

[0042] In addition, the communication between devices in the communication system can be carried out according to any stage communication protocol, which can include but is not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and future 5G, New Radio (NR), 6G, etc., and / or other currently known or future to be developed communication protocols.

[0043] In the embodiments of the present application, the term "network device" refers to, for example, a device that accesses a terminal device to a communication network and provides services for the terminal device in a communication system. The network device can include but is not limited to the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

[0044] A base station can include, but is not limited to, a NodeB (or NB), an evolved NodeB (or eNB), and a 5G base station (or gNB), an IAB donor, and the like, and can further include a remote radio head (RRH), a remote radio unit (RRU), a relay, or a low power node (e.g., a femto, a pico, and the like). Also, the term "base station" can include some or all functions of them, and each base station can provide communication coverage for a specific geographic area. The term "cell" can refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0045] In embodiments of the present application, the term "user equipment" (UE) refers to, for example, a device that accesses a communication network through a network device and receives network services, which can also be referred to as "terminal equipment" (TE). The terminal equipment can be fixed or mobile, and can also be referred to as a mobile station (MS), a terminal, a user, a subscriber station (SS), an access terminal (AT), a station, a mobile terminal (MT), and the like.

[0046] The terminal equipment can include, but is not limited to, the following devices: a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a machine type communication device, a laptop computer, a cordless phone, a smartphone, a smartwatch, a digital camera, and the like.

[0047] For another example, in an Internet of Things (IoT) scenario or the like, the terminal equipment can also be a machine or device that performs monitoring or measurement, which can include, but is not limited to, the following devices: a machine type communication (MTC) terminal, a vehicle-mounted communication terminal, a device to device (D2D) terminal, a machine to machine (M2M) terminal, and the like.

[0048] In addition, the term "network side" or "network device side" refers to the side of the network, which can be a certain base station, or can include one or more network devices as above. The term "user side" or "terminal side" or "terminal device side" refers to the side of the user or terminal, which can be a certain UE, or can include one or more terminal devices as above. In this paper, "device" can refer to a network device or a terminal device without special indication.

[0049] In addition, the uplink signal can include uplink data signals and / or uplink control signals and / or PRACH and / or SRS, etc., and can also be referred to as uplink transmission (UL transmission) or uplink information or uplink channel. Transmitting / receiving the uplink transmission on the uplink resource can be understood as transmitting / receiving the uplink transmission using the uplink resource. The downlink signal can include downlink data signals and / or downlink control signals and / or synchronization signals (SS, such as PSS / SSS) and / or broadcast channels (PBCH) and / or SSB (SS / PBCH block, including PSS, SSS and PBCH and its DMRS) and / or CSI-RS, etc., and can also be referred to as downlink transmission (DL transmission) or downlink information or downlink channel. Transmitting / receiving the downlink transmission on the downlink resource can be understood as transmitting / receiving the downlink transmission using the downlink resource.

[0050] In the embodiments of the present application, the higher layer signaling can be, for example, radio resource control (RRC) signaling; the RRC signaling can include, for example, RRC messages, such as broadcast / common RRC messages / signaling (such as master information block (MIB), system information), dedicated RRC messages / signaling; or RRC information elements (RRC IEs); or information fields included in the RRC messages or RRC information elements (or information fields included in the information fields). The higher layer signaling can also be, for example, medium access control (MAC) signaling; or referred to as MAC control elements (MAC CEs). However, the present application is not limited thereto. The names of the signaling (such as RRC messages, information element IEs, information fields, higher layer parameters, etc.) used in the embodiments of the present application are only examples, and other names can also be used, and the embodiments of the present application are not limited thereto.

[0051] In the embodiments of the present application, multiple means at least two, or two or more. "Overlapping" includes complete overlap and / or partial overlap and / or at least partial overlap.

[0052] In the embodiments of the present application, predefined refers to being agreed in a protocol or determined according to rules agreed in a protocol, without additional configuration. Configuration / indication refers to being directly or indirectly configured / indicated by a network device through high-layer signaling and / or physical-layer signaling. Configuration / indication can be introduced by introducing a high-layer parameter in high-layer signaling, where the high-layer parameter refers to fields and / or information elements / units / members (IEs) in high-layer signaling, and the like. Physical-layer signaling refers to, for example, but is not limited to, control information (DCI) carried by a physical downlink control channel or control information carried by a sequence.

[0053] For ease of description, the following describes a base station as an example of an access network device. In the following description, “if”, “in the case of” and “when” can be used interchangeably without causing confusion. For resources in the frequency domain, “carrier” and “resource grid” can be interchangeable, “subcarrier spacing configuration (SCS) μ” and “subcarrier spacing (SCS) Δf” can be interchangeable. “Subcarrier spacing” and “numerology” can be interchangeable. “Resource block”, “RB” and “PRB”, “physical resource block”, “common resource block (CRB)” can be interchangeable. Configuration / indication / provision / given can be interchangeable. “Index” and “ID” can be interchangeable.

[0054] The following describes scenarios of the embodiments of the present application by way of examples, but the present application is not limited thereto.

[0055] FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, which schematically illustrates a case taking a terminal device and a network device as examples. As shown in FIG. 1, the communication system 100 can include a network device 101 and terminal devices 102 and 103. For simplicity, FIG. 1 illustrates only two terminal devices and one network device as examples, but the embodiments of the present application are not limited thereto.

[0056] In the embodiments of the present application, the network device 101 and the terminal devices 102 and 103 can perform existing services or future implementable services. For example, the services can include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC) and ultra-reliable and low-latency communication (URLLC), and the like.

[0057] The terminal device 102 can send data to the network device 101, for example, using a licensed or unlicensed transmission mode. The network device 101 can receive data sent by one or more terminal devices 102, and feed back information to the terminal device 102, for example, ACK / NACK information, etc., so that the terminal device 102 can confirm the end of the transmission process, or can perform new data transmission again, or can perform data retransmission.

[0058] The network device 101 can send data to the terminal device 102 and / or the terminal device 103 using a unicast or groupcast or broadcast mode. The terminal device 102 can receive data sent by one or more network devices (for example, dual connectivity or multi-connectivity) through a downlink or the terminal device 103 through a sidelink.

[0059] It is worth noting that FIG. 1 shows that both terminal devices 102 and 103 are within the coverage of the network device 101, but the present application is not limited thereto. Both terminal devices 102 and 103 can be outside the coverage of the network device 101, or one terminal device 102 is within the coverage of the network device 101 and the other terminal device 103 is outside the coverage of the network device 101.

[0060] How to enable a terminal device to perform non-contention-based random access using the time-domain resources for simultaneous transmission and reception of the above network device is currently not a specific method for this problem.

[0061] The various embodiments of the present application will be described below in conjunction with the accompanying drawings. These embodiments are only exemplary and not limiting of the present application. In the embodiments of the present application, the content in the brackets is optional.

[0062] Embodiments of the first aspect

[0063] The embodiments of the present application provide a random access method, which is described from the terminal device side.

[0064] FIG. 2 is a schematic diagram of a random access method according to an embodiment of the present application. As shown in FIG. 2, the method comprises:

[0065] 201. Receiving first configuration information for configuring random access resources for handover and / or re-synchronization and / or beam failure recovery and / or system information request and / or early UL synchronization and / or additional PCI; and

[0066] 202. Performing non-contention-based random access using the random access resources.

[0067] In the present application, wherein the random access resource includes PRACH resource, the first PRACH resource in the PRACH resource is enabled, wherein the first PRACH resource is in the SBFD symbol and overlaps with the DL SBFD symbol, and / or the first PRACH resource includes the second PRACH resource in the DL SBFD symbol and / or the third PRACH resource which is partially in the DL SBFD symbol and partially in the flexible SBFD symbol; or

[0068] The fourth PRACH resource in the PRACH resource is enabled, wherein the fourth PRACH resource includes the fifth PRACH resource and / or the sixth PRACH resource in the SBFD symbol and / or the seventh PRACH resource in the flexible non-SBFD symbol and / or the UL non-SBFD symbol.

[0069] The sixth PRACH resource starts from the SBFD symbol and overlaps with the non-SBFD symbol, or starts from the SBFD symbol to the end of the non-SBFD symbol, or starts from the SBFD symbol to the end of the flexible non-SBFD symbol or the UL non-SBFD symbol, or overlaps with the SBFD symbol and the non-SBFD symbol, or overlaps with the SBFD symbol and the flexible non-SBFD symbol or the UL non-SBFD symbol, or overlaps with the SBFD symbol and the non-SBFD symbol except the DL non-SBFD symbol.

[0070] It is worth noting that the above FIG. 2 only schematically illustrates the embodiments of the present application, but the present application is not limited thereto. For example, the execution order between various operations can be appropriately adjusted, and in addition, some operations can be added or some operations can be reduced. Those skilled in the art can make appropriate modifications based on the above content, and the present application is not limited to the above FIG. 2.

[0071] In some embodiments, the terminal device can be an SBFD-aware device. For example, the terminal device indicates to the network device that the terminal device is an SBFD-aware device (e.g., SBFD-aware UE) in an initial access procedure and / or in a random access procedure and / or in capability information reporting. The terminal device has a capability related to SBFD operation, which includes one or more of the following: (1) capable of learning SBFD configuration, such as the configuration of SBFD time domain resources (e.g., SBFD symbols) and frequency domain resources (e.g., UL subbands / UL usable RBs, DL subbands / DL usable RBs); (2) capable of sending uplink signals on SBFD symbols or DL SBFD symbols. In addition, the present application is not limited thereto, and the terminal device can also be a non-SBFD-aware device (e.g., non-SBFD-aware UE).

[0072] In some embodiments, the SBFD symbol can be referred to as a first symbol, which can be a symbol in a first time domain resource, which is a time domain resource for (supporting) full-duplex (e.g., SBFD) operation. The non-subband non-full-duplex (non-SBFD) can be referred to as a second symbol, which can be a symbol in a second time domain resource, which is a time domain resource that is not used for (supporting) full-duplex operation (or is not for full-duplex operation, e.g., non-SBFD), and the time positions of the first time domain resource and the second time domain resource are different.

[0073] In some embodiments, in the first time domain resource, the network device simultaneously receives and transmits in different frequency domain resources in the corresponding carrier (of the TDD frequency band or the downlink frequency band of the FDD frequency band), and in the second time domain resource, the network device only receives or transmits in the carrier. For example, in the first time domain resource, the first frequency domain resource is used for uplink and the second frequency domain resource is used for downlink; the first frequency domain resource includes, for example, uplink subbands and / or uplink usable resource blocks, and the second frequency domain resource includes, for example, downlink subbands and / or downlink usable resource blocks. The second time domain resource is outside the first time domain resource, for example, in the second time domain resource, the frequency domain resources are not divided into the first frequency domain resource and the second frequency domain resource.

[0074] In some embodiments of the present application, the terminal device is an SBFD-aware terminal device (SBFD-aware UE).

[0075] In some embodiments of the present application, when the first PRACH resource is enabled, the eighth PRACH resource in the PRACH resource in the UL symbol and / or the Flexible symbol is enabled or not enabled.

[0076] In some embodiments of the present application, the fifth PRACH resource is not enabled, and the sixth PRACH resource is not enabled.

[0077] In some embodiments of the present application, the first PRACH resource is enabled or disabled by the first information, the first information comprising at least one of the following information:

[0078] Third information for configuring SBFD symbols and / or non-SBFD symbols;

[0079] Fourth information for configuring a first sub-band, wherein the first sub-band refers to a frequency domain resource, for example, an uplink sub-band or an uplink available resource block;

[0080] Fifth information for enabling and / or disabling a first random access, the first random access comprising a second random access and / or a third random access, in the second random access, the terminal device is allowed to use the first PRACH resource to send a preamble sequence, in the third random access, the terminal device uses the fourth PRACH resource to send a PRACH;

[0081] Sixth information for enabling and / or disabling the first PRACH resource;

[0082] Seventh information for enabling and / or disabling the second PRACH resource;

[0083] Eighth information for enabling and / or disabling the third PRACH resource;

[0084] And / or,

[0085] The fourth PRACH resource is enabled or disabled by the first information and / or second information, the second information comprising at least one of the following information:

[0086] Ninth information for enabling and / or disabling the fourth PRACH resource;

[0087] Tenth information for enabling and / or disabling the fifth PRACH resource;

[0088] Eleventh information for enabling and / or disabling the sixth PRACH resource;

[0089] Twelfth information for enabling and / or disabling the seventh PRACH resource.

[0090] In some embodiments of the present application, in the second random access, the terminal device is also allowed to use an eighth PRACH resource in a UL symbol and / or a Flexible symbol to send a preamble sequence.

[0091] In some embodiments, when the power parameters (including one or more of: preambleReceivedTargetPower, powerRampingStep) corresponding to the first PRACH resource and the eighth PRACH resource are the same, the terminal device is further allowed to use the eighth PRACH resource in the UL symbol and / or Flexible symbol to send the preamble sequence, and / or when the power parameters corresponding to the first PRACH resource and the eighth PRACH resource are not the same, the terminal device is not allowed to use the eighth PRACH resource in the UL symbol and / or Flexible symbol to send the preamble sequence.

[0092] In some embodiments of the present application, the at least one information included in the first information and / or the at least one information included in the second information is respectively included in a first IE (ServingCellConfigCommonSIB) or a second IE (ServingCellConfigCommon) for configuring cell-specific parameters of a cell, and / or a third IE (ServingCellConfig) for configuring a cell, and / or a fourth IE (BWP-UplinkCommon) for configuring common parameters of a UL BWP, and / or a fifth IE (BeamFailureRecoveryConfig, or RACH-ConfigDedicated, SI-RequestConfig, SI-RequestConfigRepetitio, EarlyUL-SyncConfig, RACH-ConfigTwoTA) corresponding to the first configuration information, and / or a sixth IE (RACH-ConfigGeneric) for configuring / defining random access parameters, and / or DCI for initializing a random access process for early uplink synchronization and / or additional physical cell identification. Among them, BeamFailureRecoveryConfig is for beam failure recovery, RACH-ConfigDedicated, SI-RequestConfig is for handover or resynchronization, SI-RequestConfigRepetitio is for SI request, EarlyUL-SyncConfig is for early uplink synchronization, and RACH-ConfigTwoTA is for additional physical cell identification (additional PCI).

[0093] In some embodiments of the application, one or more of the sixth to eighth information comprises: thirteenth information for enabling and / or disabling the second random access, and / or, fourteenth information for configuring a frequency domain location of the first PRACH resource, and / or, fifteenth information for configuring a power parameter corresponding to the first PRACH resource; wherein,

[0094] The fourteenth information is different from sixteenth information for configuring a frequency domain location of the eighth PRACH resource in UL symbol and / or Flexible symbol corresponding to the first random access configuration information;

[0095] The fifteenth information is different from seventeenth information for configuring a power parameter corresponding to the eighth PRACH resource;

[0096] And / or, one or more of the ninth to twelfth information comprises: eighteenth information for enabling and / or disabling the third random access, and / or, nineteenth information for indicating a PRACH configuration table.

[0097] The following definitions are assumed to be included in the fifth IE, in or not in the sixth or other IE.

[0098] In some examples, in one or more of the fifth to sixth IE, one or more of the sixth to eighth information and one or more of the ninth to twelfth information do not exist at the same time.

[0099] In some examples, in one or more of the fifth to sixth IE, when one or more of the sixth to eighth information exists, the fourteenth information for configuring a frequency domain location of the first PRACH resource and / or the fifteenth information for configuring a power parameter corresponding to the first PRACH resource are optionally present; and / or, when one or more of the ninth to eleventh information exists, the twentieth information for configuring a power parameter corresponding to the seventh PRACH resource is optionally present, the twentieth information is different from twenty-first information for configuring a power parameter corresponding to the fifth PRACH resource and / or the sixth PRACH resource.

[0100] In some examples, when the fourteenth information is not present, the frequency domain location of the first PRACH resource is the same as the eighth PRACH resource, and when the fifteenth information is not present, the power parameter corresponding to the first PRACH resource is the same as the eighth PRACH.

[0101] In some examples, in one or more of the fifth to sixth IE, when one or more of the ninth to twelfth information exists, the nineteenth information for indicating a PRACH configuration table is optionally present.

[0102] In some examples, when the nineteenth information is absent, the PRACH configuration table for TDD or FDD is applied.

[0103] In some embodiments of the present application, when the first PRACH resource and the eighth PRACH resource in the PRACH resources are enabled, the terminal device uses the first PRACH resource or the eighth PRACH resource for random access based on the measurement result and / or the power parameter and / or the twenty-second information indicating the UE to use the first PRACH resource or the eighth PRACH resource.

[0104] In some embodiments of the present application, if the measurement result is lower than or not greater than the first threshold value and / or when the target received power corresponding to the first PRACH resource is greater than the target received power corresponding to the eighth PRACH resource, the terminal device uses the first PRACH resource or the eighth PRACH resource for random access.

[0105] In some embodiments of the present application, when at least one of the fifth PRACH resource and the sixth PRACH resource and the seventh PRACH resource in the PRACH resources are enabled, the terminal device uses the fifth and / or sixth PRACH resource or the seventh PRACH resource for random access based on the measurement result and / or the power parameter and / or the twenty-third information indicating the UE to use the fifth and / or sixth PRACH resource or the eighth PRACH resource.

[0106] In some embodiments of the present application, if the measurement result is lower than or not greater than the second threshold value and / or when the target received power corresponding to the fifth and / or sixth PRACH resource is greater than the target received power corresponding to the seventh PRACH resource, the terminal device uses the fifth and / or sixth PRACH resource or the seventh PRACH resource for random access.

[0107] Next, the present application will be further described in conjunction with specific examples.

[0108] In the present application, the random access resources (RA resources) include at least one of the following, for example: physical random access channel resources (PRACH resources), physical random access channel occasions (PRACH occasions), random access channel occasions (RACH occasions), random access occasions (ROs), preambles, preamble sequences.

[0109] FIG. 3 is a schematic diagram of a time domain resource type of the present application. As shown in FIG. 3, the time domain resource type of the present application is described as follows.

[0110] Downlink (DL) symbols: symbols configured as downlink by tdd-UL-DL-ConfigurationCommon.

[0111] Uplink (UL) symbols: symbols configured as uplink by tdd-UL-DL-ConfigurationCommon.

[0112] Flexible symbols: symbols not configured as downlink or uplink by tdd-UL-DL-ConfigurationCommon, or configured as flexible symbols, or configured as flexible symbols by tdd-UL-DL-ConfigurationCommon when tdd-UL-DL-ConfigurationCommon is provided, or all symbols when tdd-UL-DL-ConfigurationCommon is not provided (symbols not configured as downlink or uplink by tdd-UL-DL-ConfigurationCommon = symbols configured as flexible = symbols configured as flexible by tdd-UL-DL-ConfigurationCommon when tdd-UL-DL-ConfigurationCommon is provided or all symbols when tdd-UL-DL-ConfigurationCommon is not provided).

[0113] Sub-band non-overlapping full duplex (SBFD) symbols: symbols having SBFD / DL / UL subbands; for example, SBFD symbols include DL SBFD symbols and / or Flexible SBFD symbols, but are not limited thereto.

[0114] When only one TDD-UL-DL pattern is configured, the period is the same as TDD-UL-DL pattern period configured by dl-UL-TransmissionPeriodicity in TDD-UL-DL-ConfigCommon.

[0115] When two TDD-UL-DL patterns are configured, the period is the same as the sum of the two TDD-UL-DL pattern periods configured by dl-UL-TransmissionPeriodicity in TDD-UL-DL-ConfigCommon.

[0116] Non-SBFD symbol: a symbol other than SBFD symbols or a symbol other than SBFD symbols and first gap symbols, for example, a symbol not having SBFD / DL / UL subbands. Non-SBFD symbols include, for example, Full-DL symbols and / or Full-UL symbols and / or Full-flexible symbols and / or first gap symbols, which are gap symbols between non-SBFD symbols and SBFD symbols, but are not limited thereto.

[0117] Downlink subband non-full-duplex (DLSBFD) symbol or SBFD DL symbol: a SBFD symbol configured within a DL symbol or a SBFD symbol configured as downlink by tdd-UL-DL-ConfigurationCommon.

[0118] Flexible SBFD symbol or SBFD Flexible symbol: SBFD symbol configured within a Flexible symbol, or SBFD symbol configured as downlink by tdd-UL-DL-ConfigurationCommon.

[0119] Full-DL symbol or DL-only symbol or DL non-SBFD symbol or non-SBFD DL symbol: non-SBFD symbol configured within a DL symbol, or non-SBFD symbols configured as downlink by tdd-UL-DL-ConfigurationCommon.

[0120] Full-UL symbol or UL-only symbol or UL non-SBFD symbol or non-SBFD UL symbol: non-SBFD symbol configured within a UL symbol, or non-SBFD symbols configured as uplink by tdd-UL-DL-ConfigurationCommon.

[0121] Full-flexible symbol or Flexible-only symbol or Flexible non-SBFD symbol or non-SBFD Flexible symbol: A non-SBFD symbol configured within a flexible symbol, or a non-SBFD symbol configured as flexible by tdd-UL-DL-ConfigurationCommon, or a non-SBFD symbol not configured as downlink or uplink by tdd-UL-DL-ConfigurationCommon, or a non-SBFD symbol configured as flexible.

[0122] symbols not configured as downlink or uplink by tdd-UL-DL-ConfigurationCommon = symbols configured as flexible = symbols configured as flexible by tdd-UL-DL-ConfigurationCommon when tdd-UL-DL-ConfigurationCommon is provided, or, all symbols when tdd-UL-DL-ConfigurationCommon is not provided and not configured with DL / UL subbands).

[0123] In embodiments of the present application: SBFD symbols can be referred to as first symbols, DL SBFD symbols can be referred to as downlink first symbols, flexible SBFD symbols can be referred to as flexible first symbols; non-SBFD symbols can be referred to as second symbols, UL non-SBFD symbols can be referred to as uplink second symbols (or, assuming uplink symbols will not be configured as SBFD symbols, can also be referred to as / equivalent to uplink symbols), DL non-SBFD symbols can be referred to as downlink second symbols, flexible non-SBFD symbols can be referred to as flexible second symbols.

[0124] FIG. 4 is one diagram of frequency domain resource types of the present application, FIG. 5 is another diagram of frequency domain resource types of the present application, and FIG. 6 is yet another diagram of frequency domain resource types of the present application. As shown in FIG. 4, FIG. 5 and FIG. 6, the frequency domain resource types of the present application are explained as follows.

[0125] For uplink subbands (UL subbands): Cell-specific frequency locations of UL subbands are separately configured for each SCS configuration in SCS-SpecificCarrierList for UL. That is, the uplink subband configuration for different SCS configurations can be different.

[0126] For each SCS configuration: the reference starting PRB is the PRB determined by the SCS configuration and offsetToCarrier corresponding to this subcarrier spacing; only configure one / up to one UL subband.

[0127] For uplink bandwidth part, the uplink available physical resource blocks or resource blocks (UL usable PRBs / RBs of an UL BWP):

[0128] The first UL usable PRBs are determined as intersection between (cell-specific) UL subband and the UL BWP (in SBFD symbols), e.g., if one UL BWP has SCS = 15 kHz, then its corresponding first UL usable PRBs are the intersection between the UL BWP and the uplink subband configured for SCS = 15 kHz. If one UL BWP has SCS = 30 kHz, then its corresponding first UL usable PRBs are the intersection between the UL BWP and the uplink subband configured for SCS = 30 kHz. For example, as shown in FIG. 4 and FIG. 5, the uplink subband therein represents the uplink subband configured for the SCS corresponding to the UL BWP, for example.

[0129] The second UL usable PRBs are explicitly configured within the UL BWP (in SBFD symbols), e.g., as shown in FIG. 6.

[0130] FIG. 7 is one schematic diagram of PRACH resources for the second random access. As shown in FIG. 7, in at least one embodiment of the present application, for the second random access, the following PRACH resources can be valid when enabled and invalid when not enabled (i.e., the above-mentioned various PRACH resource information for enabling and / or disabling can also be referred to as information for indicating that the corresponding PRACH resource can be valid or invalid (not valid)):

[0131] The eighth PRACH resource: in UL and / or Flexible symbols.

[0132] The second PRACH resource: in DL SBFD symbols.

[0133] The third PRACH resource: within SBFD symbols and partly in DL SBFD, or in other words, partly in DL SBFD symbols and partly in Flexible SBFD symbols, or across DL SBFD symbols and Flexible SBFD symbols (and within SBFD symbols).

[0134] The second PRACH resource and the third PRACH resource can also be collectively referred to as a first PRACH resource (or referred to as a first SBFD PRACH resource or a first additional PRACH resource), which is within the SBFD symbol and (partially / fully / at least partially) overlaps with the DL SBFD symbol (or is partially / fully / at least partially in the DL SBFD symbol).

[0135] FIG. 8 is a schematic diagram of PRACH resources for a third random access. As shown in FIG. 8, in at least one embodiment of the present application, the following PRACH resources can be valid when enabled for the third random access:

[0136] The fifth PRACH resource is in the SBFD symbol.

[0137] The sixth PRACH resource starts from the SBFD symbol and ends in the (UL / F) non-SBFD symbol, and / or overlaps with the SBFD symbol and the non-SBFD symbol, and / or starts from the non-SBFD symbol and ends in the SBFD symbol (this case is not shown in the figure).

[0138] The seventh PRACH resource is in the (UL / F) non-SBFD symbol.

[0139] The fifth PRACH resource to the seventh PRACH resource can also be collectively referred to as a fourth PRACH resource (or referred to as a second SBFD PRACH resource or a second additional PRACH resource).

[0140] It should be noted that in order to facilitate the embodiment of the PRACH resources located in different positions, different PRACH formats (formats) are assumed in FIG. 7 and FIG. 8, for example, short PRACH format and long PRACH format are shown in one figure. In some embodiments, the PRACH resources configured by the same random access configuration information have the same PRACH format or the same PRACH format type, for example, the PRACH resources configured by the same random access configuration information are all short PRACH format or long PRACH format.

[0141] In some embodiments, when each of the above PRACH resources is enabled, the terminal device determines the valid RO in the corresponding PRACH resource and the mapping of the valid RO and the SSB, and when it is not enabled or disabled, it is not necessary to determine the valid RO in the corresponding PRACH resource (and further, it is not necessary to determine the mapping of the valid RO and the SSB). For example, when the fourth PRACH resource is enabled, the valid RO in the fourth PRACH resource is determined and the mapping of the valid RO and the SSB is determined, and when it is not enabled or disabled, the valid RO in the fourth PRACH resource is not determined.

[0142] In some embodiments, for the first PRACH resource, the valid RO can be determined according to the time domain position relationship between the first PRACH resource and the downlink symbol and / or SSB. For example, if a first PRACH resource does not overlap with a DL symbol and / or an SSB symbol, and starts after at least N1 (integer) symbols of the DL symbol and / or the SSB symbol (before the PRACH resource), and does not precede a SS / PBCH block in the PRACH slot, it is valid, otherwise it is invalid.

[0143] In some embodiments, when at least one of the second PRACH resource ~ the sixth PRACH resource is enabled, the valid RO is determined according to the time domain location relationship between the enabled PRACH resource and the DL non-SBFD symbol / SSB and / or UL non-SBFD symbol and the frequency domain location relationship between the enabled PRACH resource and the UL subband / UL usable PRB. For example, if one fourth PRACH resource does not overlap with the DL non-SBFD symbol and / or SSB symbol, and does not overlap with the boundary of the UL subband / UL usable PRB (or in other words, does not overlap with the resource outside the UL subband / UL usable PRB), it is valid, otherwise it is invalid. For another example, if one fourth PRACH resource does not overlap with the DL non-SBFD symbol and / or SSB symbol, and starts after at least N2 (integer) symbols of the (PRACH resource before) DL non-SBFD symbol, and does not overlap with the boundary of the UL subband / UL usable PRB (or in other words, does not overlap with the resource outside the UL subband / UL usable PRB), it is valid, otherwise it is invalid. For another example, if one fourth PRACH resource does not overlap with the DL non-SBFD symbol and / or SSB symbol, and starts after at least N2 (integer) symbols of the (PRACH resource before) DL non-SBFD symbol, and does not overlap with the boundary of the UL subband / UL usable PRB (or in other words, does not overlap with the resource outside the UL subband / UL usable PRB), it is valid, otherwise it is invalid. Other similar PRACH resources.

[0144] In some embodiments, when the seventh PRACH resource is enabled, the valid RO can be determined according to the frequency domain location relationship of the time domain location relationship between the seventh PRACH resource and the SBFD symbol and / or SSB and / or DL non-SBFD symbol. For example, if one seventh PRACH resource does not overlap with the DL non-SBFD symbol and / or SSB symbol, and starts after at least N3 (integer) symbols of the (PRACH resource before) DL non-SBFD symbol and / or SSB symbol and / or SBFD symbol, it is valid, otherwise it is invalid.

[0145] In some embodiments, the above symbol types (SBFD symbol, non-SBFD symbol, DL symbol, etc.) are based on a reference SCS and normal CP (NCP) configuration, since the SCS of a BWP can be different from the reference SCS, and the BWP can use NCP or extended CP (ECP). The UE needs to further determine the above symbol type corresponding to the UL BWP according to the configured symbol type. For example, if a symbol of a BWP overlaps with the configured SBFD symbol, the symbol is an SBFD symbol, and if a symbol of a BWP overlaps with the configured non-SBFD symbol, the symbol is an SBFD symbol

[0146] In some embodiments, when determining a valid RO, the terminal device can determine according to the configured symbol type or the symbol type corresponding to the UL BWP. For example, assuming that the valid RO is determined according to the symbol type corresponding to the UL BWP, since there is a BWP using ECP, the symbols of the same symbol type corresponding to different BWPs can not be aligned. In order to avoid this situation and reduce complexity, the terminal device is not expected to be configured with extended CP, or the terminal device is not expected to configure the RO in the UL BWP configured with extended CP.

[0147] In some embodiments, the SSB and the RO can have a mapping (SSB-RO mapping) relationship.

[0148] In some examples, the mapping of the valid RO in the first PRACH resource and the SSB is: mapping to the RO in the order of SSB index from small to large.

[0149] In some examples, the mapping of the valid RO in the fourth PRACH resource and the SSB is: mapping to the RO in the order of SSB index from small to large or from large to small.

[0150] In some examples, the mapping of the valid RO in the eighth PRACH resource and the SSB is: mapping to the RO in the order of SSB index from small to large or from large to small.

[0151] In some embodiments of the present application, the capability of the terminal device only supports the second random access; or the capability of the terminal device only supports the third random access; or the capability of the terminal device supports both the second random access and the third random access; or the capability of the terminal device neither supports the second random access nor the third random access.

[0152] In some embodiments, if the terminal device supports the second and / or third random access, the capability is reported to the network device.

[0153] The above merely describes the steps or processes related to the present application, but the present application is not limited thereto. The method of the embodiments of the present application can further include other steps or processes, and the specific content of the steps or processes can be referred to the related art.

[0154] The above merely describes the steps or processes related to the present application, but the present application is not limited thereto. The method of the embodiments of the present application can further include other steps or processes, and the specific content of the steps or processes can be referred to the related art.

[0155] According to the above embodiments of the present application, the terminal device can support non-contention-based random access outside the uplink time period.

[0156] Embodiments of the second aspect

[0157] The embodiments of the present application provide a random access device. The device can be a terminal device, or one or more components or assemblies configured in the terminal device. The same content as the embodiments of the first aspect will not be described again.

[0158] FIG. 9 is a schematic diagram of a random access device according to an embodiment of the present application. Since the principle of solving the problem of the random access device is the same as that of the method of the embodiments of the first aspect, the specific implementation can be referred to the embodiments of the first aspect, and the same content will not be described again.

[0159] As shown in FIG. 9, the random access device 900 according to an embodiment of the present application includes a first processing unit 901, which controls the terminal device to perform operations related to the random access method. The specific content of the operations can be referred to the related description of the random access method of the embodiments of the first aspect, and the repeated content will not be described again.

[0160] In addition, for simplicity, only the connection relationship or signal transmission between the components or modules is shown in FIG. 9, but those skilled in the art should understand that various related technologies such as bus connection can be used. The above components or modules can be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc. The implementation of the present application is not limited thereto.

[0161] The above merely describes the steps or processes related to the present application, but the present application is not limited thereto. The method of the embodiments of the present application can further include other steps or processes, and the specific content of the steps or processes can be referred to the related art.

[0162] Embodiments of the third aspect

[0163] Embodiments of the present application provide a random access method, which is described from the network device side. The same content as the embodiments of the first aspect will not be described again.

[0164] FIG. 10 is a schematic diagram of a random access method according to an embodiment of the present application. As shown in FIG. 10, the method includes the following steps.

[0165] 1001. sending, to a terminal device, first configuration information for configuring random access resources for handover and / or resynchronization and / or beam failure recovery and / or system information request and / or early UL synchronization and / or additional PCI; and

[0166] 1002. performing non-contention-based random access using the random access resources.

[0167] In some embodiments, the terminal device is an SBFD-aware UE.

[0168] In some embodiments, when the first PRACH resource is enabled, an eighth PRACH resource in the PRACH resource in the UL symbol and / or the flexible symbol is enabled or disabled.

[0169] In some embodiments, when the fifth PRACH resource is disabled, the sixth PRACH resource is disabled.

[0170] In some embodiments, the first PRACH resource is enabled or disabled by first information, the first information including at least one of the following information:

[0171] third information for configuring the first symbol and / or the second symbol;

[0172] fourth information for configuring the first sub-band;

[0173] fifth information for enabling and / or disabling the first random access, the first random access including a second random access in which the terminal device is allowed to use the first PRACH resource to send a preamble sequence and / or a third random access in which the terminal device uses the fourth PRACH resource to send a PRACH;

[0174] sixth information for enabling and / or disabling the first PRACH resource;

[0175] seventh information for enabling and / or disabling the second PRACH resource;

[0176] eighth information for enabling and / or disabling the third PRACH resource;

[0177] and / or,

[0178] the fourth PRACH resource is enabled or disabled by the first information and / or second information, the second information comprising at least one of the following information:

[0179] ninth information for enabling and / or disabling the fourth PRACH resource;

[0180] tenth information for enabling and / or disabling the fifth PRACH resource;

[0181] eleventh information for enabling and / or disabling the sixth PRACH resource;

[0182] twelfth information for enabling and / or disabling the seventh PRACH resource.

[0183] In some embodiments, in the second random access, the terminal device is further allowed to use the eighth PRACH resource in UL symbol and / or Flexible symbol to send a preamble sequence.

[0184] In some embodiments, when the power parameter corresponding to the first PRACH resource and the eighth PRACH resource is the same, the terminal device is further allowed to use the eighth PRACH resource in UL symbol and / or Flexible symbol to send a preamble sequence, and / or, when the power parameter corresponding to the first PRACH resource and the eighth PRACH resource is not the same, the terminal device is not allowed to use the eighth PRACH resource in UL symbol and / or Flexible symbol to send a preamble sequence.

[0185] In some embodiments, the at least one information included in the first information and / or the at least one information included in the second information is included in a first IE (ServingCellConfigCommonSIB) or a second IE (ServingCellConfigCommon) for configuring cell-specific parameters of a cell, and / or a third IE (ServingCellConfig) for configuring a cell, and / or a fourth IE (BWP-UplinkCommon) for configuring common parameters of a UL BWP, and / or a fifth IE (BeamFailureRecoveryConfig, or RACH-ConfigDedicated, SI-RequestConfig, SI-RequestConfigRepetition, EarlyUL-SyncConfig, RACH-ConfigTwoTA) corresponding to the first configuration information, and / or a sixth IE (RACH-ConfigGeneric) for configuring / defining random access parameters, and / or a DCI for initializing a random access procedure for early uplink synchronization and / or additional physical cell identification.

[0186] In some embodiments, one or more of the sixth to eighth information includes: thirteenth information for enabling and / or disabling the second random access, and / or, fourteenth information for configuring a frequency domain location of the first PRACH resource, and / or, fifteenth information for configuring a power parameter corresponding to the first PRACH resource; wherein,

[0187] The fourteenth information is different from sixteenth information for configuring a frequency domain location of an eighth PRACH resource corresponding to the first random access configuration information in a UL symbol and / or a Flexible symbol,

[0188] The fifteenth information is different from seventeenth information for configuring a power parameter corresponding to the eighth PRACH resource;

[0189] And / or,

[0190] One or more of the ninth to twelfth information includes: eighteenth information for enabling and / or disabling a third random access, and / or nineteenth information for indicating a PRACH configuration table.

[0191] In some embodiments, in one or more of the fifth to sixth IE, one or more of the sixth to eighth information and one or more of the ninth to twelfth information do not exist at the same time.

[0192] In some embodiments, in one or more of the fifth to sixth IE, when one or more of the sixth to eighth information is present, a fourteenth information for configuring a frequency domain location of the first PRACH resource and / or a fifteenth information for configuring a power parameter corresponding to the first PRACH resource is optionally present; and / or, when one or more of the ninth to eleventh information is present, a twentieth information for configuring a power parameter corresponding to the seventh PRACH resource is optionally present, which is different from a twenty-first information for configuring a power parameter corresponding to the fifth PRACH resource and / or the sixth PRACH resource.

[0193] In some embodiments, when the fourteenth information is not present, the frequency domain location of the first PRACH resource is the same as the eighth PRACH resource,

[0194] When the fifteenth information is not present, the power parameter corresponding to the first PRACH resource is the same as the eighth PRACH.

[0195] In some embodiments, in one or more of the fifth to sixth IE, when one or more of the ninth to twelfth information is present, a nineteenth information for indicating a PRACH configuration table is optionally present.

[0196] In some embodiments, when the nineteenth information is not present, a PRACH configuration table for TDD or FDD is applied.

[0197] In some embodiments, when the first PRACH resource and the eighth PRACH resource in the PRACH resource are enabled, the terminal device uses the first PRACH resource or the eighth PRACH resource for random access based on the terminal device measurement result and / or the power parameter and / or a twenty-second information for indicating the UE to use the first PRACH resource or the eighth PRACH resource.

[0198] In some embodiments, if the measurement result is lower than or not greater than a first threshold and / or when a target received power corresponding to the first PRACH resource is greater than a target received power corresponding to the eighth PRACH resource, the terminal device uses the first PRACH resource or the eighth PRACH resource for random access.

[0199] In some embodiments, when at least one of the fifth PRACH resource and the sixth PRACH resource and the seventh PRACH resource in the PRACH resource are enabled, the terminal device uses the fifth and / or the sixth PRACH resource or the seventh PRACH resource for random access based on the terminal device measurement result and / or the power parameter and / or a twenty-third information for indicating the UE to use the fifth and / or the sixth PRACH resource or the eighth PRACH resource.

[0200] In some embodiments, the terminal device uses the fifth and / or sixth PRACH resource or the seventh PRACH resource for random access if the measurement result is lower than or not greater than a second threshold and / or when the target received power corresponding to the fifth and / or sixth PRACH resource is greater than the target received power corresponding to the seventh PRACH resource.

[0201] The above only describes the steps or processes related to the present application, but the present application is not limited thereto. The method of the embodiments of the present application can also include other steps or processes, and the specific content of these steps or processes can be referred to the related art.

[0202] The above embodiments of the present application are only exemplary, but the present application is not limited thereto, and can be appropriately modified on the basis of the above embodiments. For example, the above embodiments can be used alone or one or more of the above embodiments can be combined.

[0203] Embodiments of the fourth aspect

[0204] The embodiments of the present application provide a random access device. The device can be a network device, or a component or assembly configured in the network device. The same content as the embodiments of the third aspect will not be described again.

[0205] FIG. 11 is a schematic diagram of a random access device according to an embodiment of the present application. Since the principle of solving the problem of the random access device is the same as that of the method of the embodiments of the third aspect, the specific implementation can be referred to the embodiments of the third aspect, and the same content will not be described again.

[0206] As shown in FIG. 11, the random access device 1100 according to an embodiment of the present application includes a second processing unit 1101. The second processing unit 1101 controls the network device to operate to implement the method described in the embodiments of the third aspect. The specific content of the operation can be referred to the embodiments of the third aspect, which will not be described again here.

[0207] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The device of the embodiments of the present application can also include other components or modules, and the specific content of these components or modules can be referred to the related art.

[0208] In addition, for simplicity, only the connection relationship or signal path between the components or modules is exemplarily shown in FIG. 11, but those skilled in the art should understand that various related technologies such as bus connection can be used. The above components or modules can be implemented by hardware facilities such as processor, memory, transmitter, receiver, etc., and the implementation of the present application is not limited thereto.

[0209] The above embodiments are only illustrative of the embodiments of the present application, but the present application is not limited thereto, and can be appropriately modified on the basis of the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0210] Embodiments of the fifth aspect

[0211] The embodiments of the present application also provide a communication system, which can refer to FIG. 1, and the same content as the embodiments of the first to fourth aspects will not be described herein.

[0212] In some embodiments, the communication system 100 can at least include: a network device 101 including the random access apparatus in the embodiments of the fourth aspect, and / or a terminal device 102 including the random access apparatus in the embodiments of the second aspect, which will not be described herein.

[0213] The embodiments of the present application also provide a network device, which can be a base station for example, but the present application is not limited thereto, and can also be other network devices.

[0214] [According to Rule 26 Correction 05.09.2024] At least one of the terminal device 102, the terminal device 103, and the network device 101 can have the configuration of the electronic device shown in FIG. 12.

[0215] FIG. 12 is a schematic block diagram of the electronic device. As shown in FIG. 12, the electronic device 1200 can include a processor 1210 and a memory 1220; the memory 1220 is coupled to the processor 1210. The memory 1220 can store various data; in addition, it also stores a program 1230 for information processing, and executes the program 1230 under the control of the processor 1210 to receive or send various information.

[0216] In one embodiment, the processor 1210 can be configured to execute the method in the embodiments of the first aspect and / or the method in the embodiments of the second aspect.

[0217] In addition, as shown in FIG. 12, the electronic device 1200 can also include a transceiver 1240, an antenna 1250, etc.; the functions of the above components are similar to those of the prior art, which will not be described herein. It is worth noting that the electronic device 1200 does not necessarily include all the components shown in FIG. 12; in addition, the electronic device 1200 can also include components not shown in FIG. 12, which can refer to the prior art.

[0218] The embodiments of the present application further provide a computer readable program, which, when executed in the device or network equipment for random access, enables the computer to perform the method of the embodiments of the third aspect in the device or network equipment for random access.

[0219] The embodiments of the present application further provide a storage medium storing a computer readable program, which enables the computer to perform the method of the embodiments of the third aspect in the device or network equipment for random access.

[0220] The embodiments of the present application further provide a computer readable program, which, when executed in the device or terminal equipment for random access, enables the computer to perform the method of the embodiments of the first aspect in the device or terminal equipment for random access.

[0221] The embodiments of the present application further provide a storage medium storing a computer readable program, which enables the computer to perform the method of the embodiments of the first aspect in the device or terminal equipment for random access.

[0222] The device and method of the present application can be realized by hardware, or by hardware in combination with software. The present application relates to a computer readable program, which, when executed by a logic component, enables the logic component to realize the device or component described above, or enables the logic component to realize the various methods or steps described above. The logic component is, for example, a field programmable logic component, a microprocessor, a processor used in a computer, etc. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0223] The method / device described in combination with the embodiments of the present application can be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figures and / or a combination of one or more of the functional block diagrams can correspond to each software module of the computer program flow, and can also correspond to each hardware module. These software modules can correspond to each step shown in the figures, respectively. These hardware modules can be realized by, for example, fixing the software modules by using a field programmable gate array (FPGA).

[0224] The software modules can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. The storage medium can be coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium can be integral to the processor. The processor and the storage medium can reside in an ASIC. The software modules can be stored in a memory of the mobile terminal, or in a memory card that can be inserted into the mobile terminal. For example, if the device is a mobile terminal, the software modules can be stored in a MEGA-SIM card or a large capacity flash memory device that is inserted into the mobile terminal.

[0225] One or more of the functional blocks described in the figures and / or one or more combinations of the functional blocks can be implemented as a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof, for performing the functions described in this disclosure. One or more of the functional blocks described in the figures and / or one or more combinations of the functional blocks can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0226] The present application has been described above with the attachment of specific embodiments, however, it should be apparent to those skilled in the art that the description is illustrative only and not in limitation of the application. Changes and modifications can be made by those skilled in the art, which fall within the scope of the present application as defined by the appended claims and their equivalents.

Claims

1. An apparatus of random access, applied to a terminal device, the apparatus comprising a first processing unit configured to control the terminal device to: receive first configuration information for configuring random access resources for handover and / or re-synchronization and / or beam failure recovery and / or system information request and / or early UL synchronization and / or additional PCI; and perform a contention-free random access (CFRA) using the random access resources, wherein the random access resources comprise PRACH resources, a first PRACH resource of the PRACH resources is enabled, wherein the first PRACH resource is in a first symbol and overlaps with a DL first symbol, and / or the first PRACH resource comprises a second PRACH resource in the DL first symbol and / or a third PRACH resource having one part in the DL first symbol and another part in a flexible first symbol; or a fourth PRACH resource of the PRACH resources is enabled, wherein the fourth PRACH resource comprises a fifth PRACH resource in a first symbol and / or a sixth PRACH resource and / or a seventh PRACH resource in a flexible second symbol and / or a UL second symbol, the sixth PRACH resource starts from the first symbol and overlaps with a second symbol, or starts from the first symbol to the end of the second symbol, or starts from the first symbol to the end of the flexible second symbol or the UL second symbol, or overlaps with the first symbol and the second symbol, or overlaps with the first symbol and the flexible second symbol or the UL second symbol, or overlaps with the first symbol and the second symbol except the DL second symbol. The terminal device is a SBFD-aware UE. When the first PRACH resource is enabled, an eighth PRACH resource of the PRACH resources in a UL symbol and / or a flexible symbol is enabled or not enabled. wherein When the fifth PRACH resource is not enabled, the sixth PRACH resource is not enabled. The first PRACH resource is enabled or disabled by first information, the first information comprises at least one of the following information: third information for configuring the first symbol and / or the second symbol; 2. The apparatus of claim 1, wherein, fourth information for configuring a first sub-band; 3. The apparatus of claim 1, wherein, fifth information for enabling and / or disabling a first random access, the first random access comprises a second random access in which the terminal device is allowed to transmit a preamble sequence using the first PRACH resource, and / or a third random access in which the terminal device transmits a PRACH using the fourth PRACH resource; 4. The apparatus of claim 1, wherein, sixth information for enabling and / or disabling the first PRACH resource; 5. The apparatus of claim 1, wherein, seventh information for enabling and / or disabling the second PRACH resource; ​ ​ ​ ​ ​ eighth information for enabling and / or disabling the third PRACH resource; and / or, the fourth PRACH resource is enabled or disabled by the first information and / or second information, the second information comprising at least one of the following information: ninth information for enabling and / or disabling the fourth PRACH resource; tenth information for enabling and / or disabling the fifth PRACH resource; eleventh information for enabling and / or disabling the sixth PRACH resource; twelfth information for enabling and / or disabling the seventh PRACH resource.

6. The apparatus of claim 5, wherein, In the second random access, the terminal device is further allowed to use the eighth PRACH resource in UL symbol and / or Flexible symbol to send a preamble sequence.

7. The apparatus of claim 5, wherein, When the power parameters corresponding to the first PRACH resource and the eighth PRACH resource are the same, the terminal device is further allowed to use the eighth PRACH resource in UL symbol and / or Flexible symbol to send a preamble sequence, and / or, when the power parameters corresponding to the first PRACH resource and the eighth PRACH resource are different, the terminal device is not allowed to use the eighth PRACH resource in UL symbol and / or Flexible symbol to send a preamble sequence.

8. The apparatus of claim 5, wherein, The at least one information included in the first information and / or the at least one information included in the second information is respectively included in a first IE (ServingCellConfigCommonSIB) or a second IE (ServingCellConfigCommon) for configuring cell-specific parameters of a cell, and / or a third IE (ServingCellConfig) for configuring a cell, and / or a fourth IE (BWP-UplinkCommon) for configuring common parameters of an UL BWP, and / or a fifth IE (BeamFailureRecoveryConfig, or RACH-ConfigDedicated, SI-RequestConfig, SI-RequestConfigRepetition, EarlyUL-SyncConfig, RACH-ConfigTwoTA) corresponding to the first configuration information, and / or a sixth IE (RACH-ConfigGeneric) for configuring / defining random access parameters, and / or DCI for initializing a random access process for early uplink synchronization and / or additional physical cell identifier.

9. The apparatus of claim 5, wherein, One or more of the sixth to eighth information comprises: thirteenth information for enabling and / or disabling the second random access, and / or, fourteenth information for configuring the frequency domain position of the first PRACH resource, and / or, fifteenth information for configuring the power parameter corresponding to the first PRACH resource; wherein, The fourteenth information is different from seventeenth information for configuring a power parameter corresponding to the eighth PRACH resource. The fifteenth information is different from seventeenth information for configuring a power parameter corresponding to the eighth PRACH resource. And / or, One or more of the ninth to twelfth information includes eighteenth information for enabling and / or disabling third random access, and / or nineteenth information for indicating a PRACH configuration table.

10. The apparatus of claim 8, wherein, In one or more of the fifth to sixth IE, one or more of the sixth to eighth information and one or more of the ninth to twelfth information do not exist at the same time.

11. The apparatus of claim 8, wherein, In one or more of the fifth to sixth IE, when one or more of the sixth to eighth information exists, the fourteenth information for configuring a frequency domain location of the first PRACH resource and / or the fifteenth information for configuring a power parameter corresponding to the first PRACH resource are optionally present; and / or, when one or more of the ninth to eleventh information exists, the twentieth information for configuring a power parameter corresponding to the seventh PRACH resource is optionally present, the twentieth information being different from twenty-first information for configuring a power parameter corresponding to the fifth PRACH resource and / or the sixth PRACH resource.

12. The apparatus of claim 11, wherein, When the fourteenth information is not present, a frequency domain location of the first PRACH resource is the same as the eighth PRACH resource, When the fifteenth information is not present, a power parameter corresponding to the first PRACH resource is the same as the eighth PRACH.

13. The apparatus of claim 8, wherein, In one or more of the fifth to sixth IE, when one or more of the ninth to twelfth information exists, the nineteenth information for indicating a PRACH configuration table is optionally present.

14. The apparatus of claim 13, wherein, When the nineteenth information is not present, a PRACH configuration table for TDD or FDD is applied.

15. The apparatus of claim 1, wherein, When the first PRACH resource and the eighth PRACH resource in the PRACH resource are enabled, the terminal device uses the first PRACH resource or the eighth PRACH resource for random access using the terminal device measurement result and / or the power parameter and / or twenty-second information for indicating that the UE uses the first PRACH resource or the eighth PRACH resource.

16. The apparatus of claim 15, wherein, If the measurement result is lower than or not greater than a first threshold and / or when a target received power corresponding to the first PRACH resource is greater than a target received power corresponding to the eighth PRACH resource, the terminal device uses the first PRACH resource or the eighth PRACH resource for random access.

17. The apparatus of claim 1, wherein, When at least one of a fifth PRACH resource and a sixth PRACH resource and a seventh PRACH resource in the PRACH resources are enabled, the terminal device uses the fifth and / or sixth PRACH resource or the seventh PRACH resource for random access according to the terminal device measurement result and / or power parameter and / or the twenty-third information indicating the UE to use the fifth and / or sixth PRACH resource or the eighth PRACH resource.

18. The apparatus of claim 15, wherein, If the measurement result is lower than or not greater than a second threshold and / or when the target received power corresponding to the fifth and / or sixth PRACH resource is greater than the target received power corresponding to the seventh PRACH resource, the terminal device uses the fifth and / or sixth PRACH resource or the seventh PRACH resource for random access.

19. An apparatus for random access, applied to a network device, the apparatus comprising a second processing unit configured to control the network device to perform the following operations: transmit first configuration information for configuring random access resources for handover and / or resynchronization and / or beam failure recovery and / or system information request and / or early UL synchronization and / or additional PCI; and perform non-contention-based random access (CFRA) using the random access resources, wherein the random access resources comprise PRACH resources, a first PRACH resource in the PRACH resources is enabled, wherein the first PRACH resource is in a first symbol and overlaps with a DL first symbol, and / or the first PRACH resource comprises a second PRACH resource in the DL first symbol and / or a third PRACH resource having one part in the DL first symbol and another part in a flexible first symbol; or a fourth PRACH resource in the PRACH resources is enabled, wherein the fourth PRACH resource comprises a fifth PRACH resource and / or a sixth PRACH resource in the first symbol and / or a seventh PRACH resource in a flexible second symbol and / or a UL second symbol, the sixth PRACH resource starts from the first symbol and overlaps with the second symbol, or starts from the first symbol to the end of the second symbol, or starts from the first symbol to the end of the flexible second symbol or the UL second symbol, or overlaps with the first symbol and the second symbol, or overlaps with the first symbol and the flexible second symbol or the UL second symbol, or overlaps with the first symbol and the second symbol except the DL second symbol.

20. A communication system comprising: a network device having the apparatus of claim 19; a terminal device having the apparatus of any one of claims 1-18.

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