Random access method and apparatus, and communication system

Abstract

Provided in the embodiments of the present application are a random access method and apparatus, and a communication system. The apparatus comprises a first processing unit, wherein the first processing unit controls a terminal device to perform the following operations: receiving first random access configuration information and / or second random access configuration information; and performing random access using a random access resource configured by the first random access configuration information or the second random access configuration information.

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 and coverage of uplink transmission, and reduce the latency of uplink transmission, in a TDD frequency, a network device can work in a full duplex mode at certain time positions, for example, the network device simultaneously receives and transmits in different frequency domain resources in the corresponding carrier (of the TDD frequency). This working mode is, for example, referred to as sub-band non-overlapping full duplex (SBFD), but is not limited thereto. The network device can indicate to a terminal device which time domain resources the network device simultaneously receives and transmits in, 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 contention-based random access.

[0007] To solve at least one of the above problems, the embodiments of the present application provide a contention-based random access method, device and communication system.

[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 random access configuration information and / or second random access configuration information; and

[0010] performing random access using random access resources configured by the first random access configuration information or the second random access configuration information,

[0011] wherein,

[0012] for the first random access configuration information, a first PRACH resource is enabled or disabled by the first information, wherein the first PRACH resource is in an SBFD symbol and overlaps with a DL SBFD symbol, and / or the first PRACH resource includes a second PRACH resource in a DL SBFD symbol and / or a third PRACH resource which is partially in a DL SBFD symbol and partially in a flexible SBFD symbol; and / or,

[0013] for the second random access configuration information, a fourth PRACH resource is enabled or disabled by default and / or is enabled or disabled by the first information and / or the second information, wherein the fourth PRACH resource includes a fifth PRACH resource and / or a sixth PRACH resource in an SBFD symbol and / or a seventh PRACH resource in a flexible non-SBFD symbol and / or an UL non-SBFD symbol,

[0014] 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.

[0015] According to another aspect of the embodiments of the present application, an apparatus for random access is provided, applied to a terminal device, and characterized in that the apparatus comprises a first processing unit, which controls the terminal device to perform the following operations:

[0016] receiving first random access configuration information and / or second random access configuration information; and

[0017] performing random access using random access resources configured by the first random access configuration information or the second random access configuration information,

[0018] wherein,

[0019] for the first random access configuration information, a first PRACH resource is enabled or disabled by first information, wherein the first PRACH resource is in the SBFD symbol and overlaps with the DL SBFD symbol, and / or the first PRACH resource includes a second PRACH resource in the DL SBFD symbol and / or a third PRACH resource in the flexible SBFD symbol,

[0020] for the second random access configuration information, a fourth PRACH resource is enabled or disabled by default and / or by first information and / or second information, wherein the fourth PRACH resource includes a fifth PRACH resource in the SBFD symbol and / or a sixth PRACH resource and / or a seventh PRACH resource in the flexible non-SBFD symbol and / or the UL non-SBFD symbol,

[0021] 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.

[0022] One of 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 the contention-based random access in the uplink time period, thereby improving the capacity and coverage of the random access, reducing the time delay of the random access, and improving the resource allocation flexibility and resource utilization.

[0023] 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.

[0024] 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.

[0025] It should be emphasized that the term "comprises / comprising" when used in this text, refers to the presence of the 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

[0026] Elements and features described with respect to one drawing or implementation of the application can be combined with elements and features illustrated in one or more other drawings or implementations of the application. 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.

[0027] The accompanying drawings, which are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is to be understood that the drawings are solely for purposes of illustration and that they are not limiting of the application. In the drawings:

[0028] FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

[0029] FIG. 2 is a schematic diagram of a configuration framework;

[0030] FIG. 3 is a schematic diagram of a method of random access according to an embodiment of the present application;

[0031] [Rule 26 correction 05.09.2024] FIG. 4 is a schematic diagram of a time domain resource type according to the present application;

[0032] [Rule 26 correction 05.09.2024] FIG. 5 is a schematic diagram of a frequency domain resource type according to the present application;

[0033] [Rule 26 correction 05.09.2024] FIG. 6 is another schematic diagram of a frequency domain resource type according to the present application;

[0034] [Rule 26 correction 05.09.2024] FIG. 7 is yet another schematic diagram of a frequency domain resource type according to the present application;

[0035] [Rule 26 correction 05.09.2024] FIG. 8 is a schematic diagram of PRACH resources configured by first random access configuration information;

[0036] [Rule 26 correction 05.09.2024] FIG. 9 is a schematic diagram of PRACH resources configured by second random access configuration information;

[0037] [Rule 26 correction 05.09.2024] FIG. 10 is a schematic diagram of an apparatus of random access according to an embodiment of the present application;

[0038] [Rule 26 correction 05.09.2024] FIG. 11 is a schematic diagram of a method of random access according to an embodiment of the present application;

[0039] [Rule 26 correction 05.09.2024] FIG. 12 is a schematic diagram of an apparatus of random access according to an embodiment of the present application;

[0040] [Rule 26 correction 05.09.2024] FIG. 13 is a schematic diagram of an electronic device according to an embodiment of the present application.

[0041] [Amended according to Rule 26 05.09.2024] DETAILED DESCRIPTION

[0042] The foregoing and other features of the present application will become apparent to those skilled in the art upon consideration of the following description of specific embodiments of the application, taken in conjunction with the accompanying drawings. In the description of embodiments of the application, specific terminology is employed for the sake of clarity. However, the application is not intended to be limited to the specific terminology so selected. A detailed description of the application is provided below with reference to the following figures.

[0043] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements from the point of view, but do not represent the spatial arrangement or time sequence 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 "include", "comprise", "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.

[0044] In the embodiments of the present application, the singular form "a", "an", etc. includes the plural form, should be understood broadly 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.

[0045] In the embodiments of the present application, the term "communication network" or "wireless communication network" can refer to a network that complies with any communication standard, such as Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), etc.

[0046] In addition, communication between devices in a communication system can be carried out according to any phase of the 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 to be developed in the future communication protocols.

[0047] In 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), and the like.

[0048] The base station can include, but is not limited to, the following devices: node B (NodeB or NB), evolved node B (eNodeB or eNB), and 5G base station (gNB), 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 (such as a femto, a pico, and the like). The term "base station" can include some or all functions thereof, 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.

[0049] 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.

[0050] 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.

[0051] For another example, in scenarios such as Internet of Things (IoT), a terminal device can also be a machine or an apparatus that performs monitoring or measurement, for example, can include but is not limited to: 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.

[0052] 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 described 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 described above. In this article, "device" can refer to a network device or a terminal device without special indication.

[0053] 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 channel (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.

[0054] In embodiments of the present application, the high layer signaling may, for example, be radio resource control (RRC) signaling; the RRC signaling may, for example, include RRC messages (RRC message), such as broadcast / common RRC messages / signaling (e.g., master information block (MIB), system information), dedicated RRC messages / signaling; or RRC information elements (RRC IE); or information fields included in the RRC messages or RRC information elements (or information fields included in the information fields). The high layer signaling may, for example, also be medium access control (MAC) signaling; or be referred to as MAC control elements (MAC CE). However, the present application is not limited thereto. The names of the signaling (e.g., RRC messages, information element (IE), information fields, high layer parameters, etc.) used in embodiments of the present application are merely examples, and other names may also be used, and embodiments of the present application are not limited thereto.

[0055] In embodiments of the present application, multiple means at least two, or two or more. Overlapping includes complete overlapping and / or partial overlapping and / or at least partial overlapping.

[0056] In embodiments of the present application, predefined means defined by a protocol or determined according to rules defined by a protocol, without additional configuration. Configuration / indication means direct or indirect configuration / indication by a network device through high layer signaling and / or physical layer signaling. The configuration / indication may, for example, be configured / indicated by introducing high layer parameters in the high layer signaling, where the high layer parameters refer to fields and / or information elements / units / members (IE) in the high layer signaling, etc. The physical layer signaling may, for example, be control information (DCI) carried by a physical downlink control channel or control information carried by a sequence, but is not limited thereto.

[0057] For ease of description, a base station is used as an example of an access network device in the following description. In the following description, “if”, “in the case of” and “when” may be used interchangeably without causing confusion. For resources in the frequency domain, “carrier” and “resource grid” may be interchangeable, “subcarrier spacing configuration (μ)” and “subcarrier spacing (SCS) (Δf)” may be interchangeable. “Subcarrier spacing” and “numerology” may be interchangeable. “Resource block”, “RB” and “PRB”, “physical resource block”, “common resource block (CRB)” may be interchangeable. Configuration / indication / provision / given may be interchangeable. “Index” and “ID” may be interchangeable.

[0058] The scenarios of the embodiments of the present application are described below by way of examples, but the present application is not limited thereto.

[0059] FIG. 1 is a schematic diagram of a communication system of the embodiments of the present application, which schematically illustrates the case taking the terminal device and the 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 only takes two terminal devices and one network device as examples for illustration, but the embodiments of the present application are not limited thereto.

[0060] 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 transmission. For example, these 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), etc.

[0061] Among them, the terminal device 102 can send data to the network device 101, for example, using authorized 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, such as acknowledgement ACK / non-acknowledgement NACK information, etc., and the terminal device 102 can confirm the end of the transmission process according to the feedback information, or can also perform new data transmission, or can perform data retransmission.

[0062] Among them, the network device 101 can use unicast or groupcast or broadcast mode to send data to the terminal device 102 and / or the terminal device 103. The terminal device 102 can receive data sent by one or more network devices (such as dual connectivity or multi-connectivity) through downlink or the terminal device 103 through sidelink.

[0063] 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 out of the coverage of the network device 101, or one terminal device 102 is within the coverage of the network device 101 while the other terminal device 103 is out of the coverage of the network device 101.

[0064] To support multiple features related to random access introduced in the evolution process, Release 17 (Rel-17) introduces a configuration framework of feature combination and additional RACH configuration, and is further enhanced in Rel-18. Currently, 6 features are supported, including RedCap, small data transmission (SDT), slicing, Msg3 repetition, msg1 repetition and eRedCap.

[0065] Based on the configuration framework, a network device can configure preambles, PRACH occasions, etc. for different feature combinations respectively. For a UE, for a random access procedure associated with a feature combination, the UE can send a PRACH transmission based on the preambles, PRACH occasions, etc. corresponding to the feature combination. In this configuration framework, in order to enable the network device to distinguish different feature combinations and then send appropriate or matching response information (such as random access response RAR) to the UE, different feature combinations can be configured with different preamble sequences and / or PRACH occasions.

[0066] FIG. 2 is a schematic diagram of the above-mentioned configuration framework. In FIG. 2, only fields and information elements (IEs) closely related to the above-mentioned configuration framework are shown, and other RACH-related configurations are omitted.

[0067] As shown in FIG. 2, the information element of bandwidth part uplink common (BWP-UplinkCommon) includes the fields of random access channel configuration common (rach-ConfigCommon), message A configuration common (msgA-ConfigCommon-r16) and additional random access configuration list (additionalRACH-ConfigList-r17).

[0068] The random access channel configuration common (rach-ConfigCommon) field has a random access channel common configuration (RACH-ConfigCommon) IE. The message A configuration common (msgA-ConfigCommon-r16) field has a message A common configuration (MsgA-ConfigCommon-r16) IE. The additional random access configuration list (additionalRACH-ConfigList-r17) field has a plurality of additional random access configuration IEs, i.e., additional random access configuration 1, additional random access configuration 2, … Each additional random access configuration has a random access channel configuration common (rach-ConfigCommon) field and a message A configuration common (msgA-ConfigCommon-r16) field, each random access channel configuration common (rach-ConfigCommon) field has a random access channel common configuration (RACH-ConfigCommon) IE, and each message A configuration common (msgA-ConfigCommon-r16) field has a message A common configuration (MsgA-ConfigCommon-r16) IE.

[0069] As shown in FIG. 2, the random access channel common configuration (RACH-ConfigCommon) IE or the message A common configuration (MsgA-ConfigCommon-r16) IE can have a feature combination preamble list (featureCombinationPreamblesList-r17) field. The feature combination preamble list (featureCombinationPreamblesList-r17) field can have a plurality of feature combination preamble (FeatureCombinationPreambles) IEs, such as feature combination preamble 1 (FeatureCombinationPreambles 1), feature combination preamble 2 (FeatureCombinationPreambles 2), … Each feature combination preamble (FeatureCombinationPreambles) has a feature combination (featureCombination-r17) field and a corresponding random access resource set configuration (Configuration of RA resource set).

[0070] If the terminal device is to support contention-based random access using the time-domain resource for simultaneous transmission and reception of the network device described above, it is necessary to solve the problem of how to combine with the random access configuration framework described above. However, there is currently no specific method for this problem.

[0071] The various embodiments of the present application will be described below with reference to the accompanying drawings. These embodiments are only exemplary and are not intended to limit the present application. In the embodiments of the present application, the content in the brackets is optional.

[0072] Embodiments of the first aspect

[0073] The embodiments of the present application provide a random access method, which is described from the terminal device side.

[0074] FIG. 3 is a schematic diagram of a random access method according to an embodiment of the present application. As shown in FIG. 3, the method comprises:

[0075] 301, receiving first random access configuration information and / or second random access configuration information; and

[0076] 302, performing random access using the random access resource configured by the first random access configuration information or the second random access configuration information.

[0077] In the present application, for the first random access configuration information, the first PRACH resource is enabled or disabled by the first information, 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 non-SBFD symbol; and / or

[0078] For the second random access configuration information, the fourth PRACH resource is enabled or disabled by default and / or by the first information and / or the second information, 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.

[0079] Wherein, 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.

[0080] It is notable that the above Fig. 3 only schematically illustrates the embodiments of the present application, but the present application is not limited thereto. For example, the execution order between the operations can be adjusted as appropriate, and in addition, some operations can be added or some operations can be reduced. A person skilled in the art can make appropriate modifications based on the above description, and the present application is not limited to the above Fig. 3.

[0081] 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 reporting of capability information. 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 transmitting uplink signals in 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).

[0082] 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 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.

[0083] 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 for uplink and the second frequency domain resource is 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 above first frequency domain resource and second frequency domain resource.

[0084] In some embodiments, the first random access configuration information (configured random access resources) is used for SBFD-aware UE and / or non-SBFD-aware UE to perform random access, wherein:

[0085] The SBFD-aware UE uses the first PRACH resource corresponding to the first random access configuration information and / or the eighth PRACH resource in UL symbol and / or Flexible symbol to perform random access; the non-SBFD-aware UE uses the eighth PRACH resource to perform random access.

[0086] In some examples, one of the differences between the first random access configuration information and the second random access configuration information is that the second random access configuration information is for SBFD-aware UE, and the first random access configuration information can be for both SBFD-aware UE (which can use the first PRACH resource) and non-SBFD-aware UE (which cannot use the first PRACH resource).

[0087] In some embodiments, the second random access configuration information is dedicated for SBFD-aware UE to perform random access, wherein the SBFD-aware UE uses the fourth PRACH resource corresponding to the second random access configuration information to perform random access.

[0088] In some embodiments, the fifth PRACH resource is not enabled, and the sixth PRACH resource is not enabled.

[0089] In some embodiments, the first information includes at least one of the following information:

[0090] Third information for configuring SBFD symbol and / or non-SBFD symbol;

[0091] 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 and / or an uplink available resource block;

[0092] 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;

[0093] a sixth information (e.g., sbfd-r19 field included in FeatureCombination-r17) for indicating a first feature and / or a first feature combination corresponding to the first random access,

[0094] a seventh information for enabling and / or disabling the first PRACH resource;

[0095] an eighth information for enabling and / or disabling the second PRACH resource;

[0096] a ninth information for enabling and / or disabling the third PRACH resource.

[0097] In some embodiments, the second information comprises at least one of the following information:

[0098] a tenth information for enabling and / or disabling the fourth PRACH resource;

[0099] an eleventh information for enabling and / or disabling the fifth PRACH resource;

[0100] a twelfth information for enabling and / or disabling the sixth PRACH resource;

[0101] a thirteenth information for enabling and / or disabling the seventh PRACH resource.

[0102] In some embodiments, in the second random access, the terminal device is further allowed to transmit a preamble sequence using an eighth PRACH resource in a UL symbol and / or a Flexible symbol.

[0103] In some embodiments, in the second random access, the terminal device selects the first PRACH resource or the eighth PRACH resource according to a capability and / or a measurement result and / or a power parameter and / or a random access trigger event and / or a radio resource control (RRC) connection state and / or a priority of a PRACH resource and / or the Xth information.

[0104] In some embodiments, the Xth information is for indicating a priority of the first PRACH resource and the eighth PRACH resource, and / or for indicating the terminal device to use the first physical random access channel (PRACH) resource or the eighth physical random access channel (PRACH) resource for a radio resource control (RRC) connected state and / or a radio resource control inactive (RRC inactive) state and / or a specific random access trigger event.

[0105] 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.

[0106] 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 (such as ServingCellConfigCommonSIB) or a second IE (such as ServingCellConfigCommon) for configuring cell-specific parameters of a cell, and / or a third IE (such as ServingCellConfig) for configuring a cell, and / or a fourth IE (such as BWP-UplinkCommon) for configuring common parameters of a UL BWP, and / or a fifth IE (such as RACH-ConfigCommon) for configuring / defining cell-specific random access parameters, and / or a sixth IE (such as RACH-ConfigGeneric) for configuring / defining random access parameters, and / or a seventh IE (such as FeatureCombinationPreambles) for associating a set of random access resources with a feature or a combination of features, and / or an eighth IE (such as FeatureCombination) for indicating a feature or a combination of features associated with a set of random access resources, respectively, wherein the set of random access resources includes a set of preamble sequences and / or a set of PRACH resources.

[0107] In some embodiments, one or more of the seventh to ninth information includes: fourteenth information for enabling and / or disabling the second random access, and / or fifteenth information for configuring a frequency domain location of the first PRACH resource, and / or sixteenth information for configuring power parameters corresponding to the first PRACH resource, and / or seventeenth information (such as the sbfd-Option1-r19 field included in FeatureCombination-r17) for indicating a second feature and / or a second combination of features corresponding to the second random access.

[0108] wherein the fifteenth information is different from eighteenth information used for configuring frequency domain location of the eighth PRACH resource in UL symbol and / or Flexible symbol corresponding to the first random access configuration information, the sixteenth information is different from nineteenth information used for configuring power parameter corresponding to the eighth PRACH resource; and / or

[0109] One or more of the tenth to thirteenth information comprises twentieth information used for enabling and / or disabling the third random access, and / or twenty-first information (e.g., sbfd-Option2-r19 field included in FeatureCombination-r17) used for indicating third feature and / or third feature combination corresponding to the third random access, and / or twenty-second information used for indicating PRACH configuration table.

[0110] In some embodiments, the twenty-second information indicates that PRACH configuration table for TDD or FDD is adopted, and the UE determines time domain location of PRACH resource and the like according to configuration of corresponding prach-ConfigurationIndex in the corresponding PRACH configuration table.

[0111] In some embodiments, when the terminal device is provided with twenty-third information (e.g., sbfd-Option3-r19 field included in FeatureCombination-r17) used for indicating fourth feature and / or fourth feature combination corresponding to the fourth random access, the first PRACH resource and / or the fourth PRACH resource is not enabled and / or the terminal device does not expect the first PRACH resource and / or the fourth PRACH resource to be enabled, or when the first PRACH resource and / or the fourth PRACH resource is enabled, the terminal device is not (expected to be) provided with the twenty-third information.

[0112] wherein in the fourth random access, the terminal device is allowed to use the eighth PRACH resource in UL symbol and / or Flexible symbol to transmit preamble sequence associated with the fourth feature and / or fourth feature combination, and the twenty-third information is included in the eighth IE (e.g., FeatureCombination) used for indicating feature or feature combination associated with random access resource set.

[0113] In some embodiments, the first random access configuration information and the second random access configuration information respectively comprise the fifth IE (e.g., RACH-ConfigCommon).

[0114] The following assumes that the seventh to thirteenth information are included in the fifth IE, with or without the sixth / seventh / eighth IE or other IE.

[0115] In some examples, one or more of the seventh to ninth information does not exist simultaneously with one or more of the tenth to thirteenth information in one or more of the fifth to eighth IEs.

[0116] In some examples, one or more of the seventh to ninth information is optionally present in one or more of the fifth to eighth IEs included in the first information field and / or the second information field and / or the ninth IE, and / or, is not present in one or more of the fifth to eighth IEs included in the third information field. In some examples, one or more of the tenth to thirteenth information is optionally present in one or more of the fifth to seventh IEs included in the second information field and / or the ninth IE, and / or, is not present in one or more of the fifth to eighth IEs included in the third information field.

[0117] In some embodiments, the first information field comprises, for example, a rach-ConfigCommon field and / or a rach-ConfigCommonIAB-r16 field and / or a msgA-ConfigCommon-r16 field, the second information field comprises, for example, an additionalRACH-ConfigList-r17 field and / or a rach-ConfigCommon-r17 field, the ninth IE comprises, for example, an AdditionalRACH-Config-r17 IE, and the third information field comprises, for example, an additionalRACH-ConfigList-r19 and / or a rach-ConfigCommon-r19 and / or an additionalRACH-Config-r19.

[0118] In some embodiments, the third information field is included in the ninth IE.

[0119] In some embodiments, the first information field and / or the second information field can provide first random access configuration information, the second information field can provide first random access configuration information and / or second random access configuration information, and the third information field is dedicated to providing second random access configuration information.

[0120] In some examples, in one or more of the fifth to eighth IEs, when one or more of the seventh to ninth information exists, a fifteenth information for configuring a frequency domain location of the first PRACH resource and / or a sixteenth information for configuring a power parameter corresponding to the first PRACH resource is optionally present or must exist.

[0121] In some examples, when the fifteenth information is absent, the frequency domain location of the first PRACH resource is the same as the eighth PRACH resource; when the sixteenth information is absent, the power parameter corresponding to the first PRACH resource is the same as the eighth PRACH.

[0122] In some examples, in one or more of the fifth to eighth IEs, when one or more of the tenth to thirteenth information is present, the twenty-second information indicating a PRACH configuration table is optionally present or must be present.

[0123] In some examples, when the twenty-second information is absent, a PRACH configuration table for TDD or FDD is applied.

[0124] In some examples, in the fifth to eighth IEs, when the sixth information indicating the first feature and / or first feature combination corresponding to the first random access is present in the eighth IE, one or more of the seventh to thirteenth information is optionally present, and / or, when the sixth information indicating the first feature and / or first feature combination corresponding to the first random access is present in the eighth IE, one or more of the seventh to thirteenth information is absent.

[0125] The following assumes that the seventh to thirteenth information is included in the fifth IE, and in or not in the sixth IE, and outside the seventh IE.

[0126] In some examples, in the fifth IE, one or more of the seventh to thirteenth information is not present at the same time as the nineteenth information for specifying a series of preamble partitions associated with a feature combination.

[0127] In some examples, in the fifth IE, when one or more of the fifth to ninth information is present at the same time as the nineteenth information for specifying a series of preamble partitions associated with a feature combination, the nineteenth information is applied to the first PRACH resource and / or eighth PRACH resource.

[0128] In some examples, in the fifth IE, when one or more of the fifth to ninth information is present at the same time as the twenty-fourth information for specifying a series of preamble partitions associated with a feature combination, the twenty-fourth information is applied to the first PRACH resource, and is not applied to the eighth PRACH resource.

[0129] In some examples, the fifth IE optionally includes the twenty-fourth information (e.g., featureCombinationPreamblesList-r19) for specifying a series of preamble partitions associated with a feature combination, which is only applied to the first PRACH resource or fourth PRACH resource.

[0130] In some examples, in the fifth IE, when one or more of the tenth to thirteenth information coexists with the nineteenth information or the twenty-fourth information for specifying a series of preamble partitions associated with a feature combination, the nineteenth information or the twenty-fourth information applies to the fourth PRACH resource.

[0131] It is assumed that the seventh to thirteenth information is included in the fifth IE, in or not in the eighth IE; and it is assumed that the tenth to thirteenth information is included in the fifth IE, in or not in the sixth IE, and outside the seventh IE.

[0132] In some examples, in one or more of the fifth to sixth IE, when one or more of the tenth to thirteenth information exists, the nineteenth information (e.g., featureCombinationPreamblesList-r17) for specifying a series of preamble partitions associated with a feature combination is optionally present or not present.

[0133] For example, currently the second information field or the ninth IE provides that the nineteenth information must be included, when the second information field (RACH-ConfigCommon IE in the RACH-ConfigCommon IE) provides the second random access configuration information through the RACH-ConfigCommon IE, assuming that the nineteenth information only supports 6 features for legacy, this may cause the configured random access resource to have to support the third random access and the legacy feature at the same time, in order to make the random access resource configured by the second random access configuration information can only support the third random access, the modification of the limitation is needed. For example, in the fifth or sixth IE provided by the second information field or the ninth IE, when one or more of the tenth to thirteenth information exists, the nineteenth information (e.g., featureCombinationPreamblesList-r17) for specifying a series of preamble partitions associated with a feature combination is optionally present or not present.

[0134] In some embodiments of the present application, the first random access configuration information is used to support the second random access and / or the fourth random access, and the second random access configuration information is used to support the third random access.

[0135] In some embodiments of the present application, the terminal device performs the second random access or the third random access or the fourth random access according to the capability and / or the measurement result and / or the power parameter and / or the random access triggering event and / or the RRC connection state and / or the priority and / or the twenty-fifth information.

[0136] In some embodiments of the present application, the terminal device supports one or more of the second to fourth random accesses, and / or the terminal device reports a related capability. For example, 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. If the terminal device supports the second and / or third and / or fourth random access, the corresponding capability is reported to the network device.

[0137] In some examples, the priority includes: the third random access > the second random access, or the third random access > the second random access > the fourth random access. Wherein, when the terminal device supports the second random access and the third random access, and is provided with the first random access configuration information for supporting the second random access and the second random access configuration information for supporting the third random access, the terminal device performs the third random access.

[0138] In addition, in other examples, the priority can also be other cases, for example: the second random access > the third random access, or the second random access > the third random access > the fourth random access; or the second random access > the fourth random access, or the second random access > the fourth random access > the third random access; or the fourth random access > the third random access, or the fourth random access > the third random access > the second random access, etc.

[0139] In some embodiments of the present application, when the terminal device is provided with the first random access configuration information and the second random access configuration information, the first random access configuration information is used to support the second random access, and the terminal device supports the second random access and the third random access, if the measurement result is lower than or not greater than a first threshold value, the terminal device performs the third random access or the second random access.

[0140] In some embodiments of the present application, when the terminal device is only provided with the first random access configuration information, the first random access configuration information is used to support the second random access and the fourth random access, and the terminal device supports the second random access and the fourth random access, when the measurement result is lower than or not greater than a second threshold value (in addition, other conditions can also be used), the terminal device performs the second random access or the fourth random access.

[0141] In some embodiments of the present application, when the target receiving power corresponding to the first PRACH resource is greater than the target receiving power corresponding to the eighth PRACH resource, the terminal device performs the second random access.

[0142] In some embodiments of the present application, when the terminal device is provided with the first random access configuration information and the second random access configuration information, the first random access configuration information is used to support the second random access and the fourth random access:

[0143] If the measurement result is lower than or not greater than the first threshold, the UE performs the third random access; and / or,

[0144] If the measurement result is greater than the first threshold and lower than or not greater than the second threshold, the UE performs the fourth random access; and / or,

[0145] If the measurement result is greater than the first threshold, when the target receiving power corresponding to the first PRACH resource is greater than the target receiving power corresponding to the eighth PRACH resource, the UE performs the second random access; and / or,

[0146] If the measurement result is greater than the second threshold, the UE performs the second random access; and / or,

[0147] If the measurement result is greater than the second threshold and the target receiving power corresponding to the first PRACH resource is greater than the target receiving power corresponding to the eighth PRACH resource, the UE performs the second random access.

[0148] In some embodiments of the present application, the twenty-fifth information is used to indicate the priority of one or more of the second to fourth random accesses, and / or is used to indicate one or more of the second to fourth random accesses for the RRC connected state and / or the radio resource control inactive (RRC inactive) state and / or a specific random access trigger event.

[0149] Next, the present application will be further described in conjunction with specific examples.

[0150] 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.

[0151] FIG. 4 is a schematic diagram of the time domain resource type of the present application. As shown in FIG. 4, the description of the time domain resource type of the present application is as follows.

[0152] Downlink (DL) symbol: symbols configured as downlink by tdd-UL-DL-ConfigurationCommon.

[0153] Uplink (UL) symbol: symbols configured as uplink by tdd-UL-DL-ConfigurationCommon.

[0154] Flexible symbol: 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).

[0155] Sub-band non-overlapping full duplex (SBFD) symbol: symbols having SBFD / DL / UL subbands; for example, the SBFD symbols include DL SBFD symbols and / or Flexible SBFD symbols, but are not limited thereto.

[0156] 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.

[0157] 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.

[0158] Non-SBFD symbol: a symbol other than SBFD symbols, or a symbol other than SBFD symbols and first gap symbols, e.g., 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.

[0159] DL SBFD 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.

[0160] 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.

[0161] 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.

[0162] 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.

[0163] Full-flexible symbol or Flexible-only symbol or Flexible non-SBFD symbol or non-SBFD Flexible symbol: a 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. Wherein, a non-SBFD symbol not configured as downlink or uplink by tdd-UL-DL-ConfigurationCommon is equivalent to a symbol configured as flexible, equivalent to a symbol configured as flexible by tdd-UL-DL-ConfigurationCommon when tdd-UL-DL-ConfigurationCommon is provided, or, a symbol 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.

[0164] In embodiments of the present application: SBFD symbol can be referred to as first symbol, DL SBFD symbol can be referred to as downlink first symbol, flexible SBFD symbol can be referred to as flexible first symbol; non-SBFD symbol can be referred to as second symbol, UL non-SBFD symbol can be referred to as uplink second symbol (or, assuming that uplink symbol will not be configured as SBFD symbol, it can also be referred to as / equivalent to uplink symbol), DL non-SBFD symbol can be referred to as downlink second symbol, flexible non-SBFD symbol can be referred to as flexible second symbol.

[0165] Figure 5 is one schematic diagram of the frequency domain resource type of the present application, Figure 6 is another schematic diagram of the frequency domain resource type of the present application, and Figure 7 is still another schematic diagram of the frequency domain resource type of the present application. As shown in Figures 5, 6 and 7, the description of the frequency domain resource type of the present application is as follows.

[0166] For uplink subband (UL subband): SCS configuration provided for each uplink subcarrier spacing dedicated carrier list (SCS-SpecificCarrierListS for UL) separately configures the cell-specific frequency location of the uplink subband (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.

[0167] For each SCS configuration: the reference starting physical resource block (PRB) is the PRB determined by the SCS configuration and offsetToCarrier corresponding to this subcarrier spacing; only one or at most one UL subband is configured (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).

[0168] UL usable PRBs / RBs of an UL BWP:

[0169] The first UL usable PRBs are determined as intersection between the UL BWP and the (cell-specific) UL subband for the corresponding SCS configuration (in SBFD symbols), e.g., if one UL BWP’s SCS = 15 kHz, its corresponding first UL usable PRBs are the intersection between the UL BWP and the UL subband configured for 15 kHz SCS. If one UL BWP’s SCS = 30 kHz, its corresponding first UL usable PRBs are the intersection between the UL BWP and the UL subband configured for 30 kHz SCS. For example, as shown in FIG. 5 and FIG. 6, the UL subband therein represents the UL subband configured for the SCS corresponding to the UL BWP, for example;

[0170] The second UL usable PRBs are explicitly configured within the UL BWP (in SBFD symbols), e.g., as shown in FIG. 7.

[0171] FIG. 8 is one schematic diagram of PRACH resources configured for the first random access configuration information. As shown in FIG. 8, in at least one embodiment of the present application, among the PRACH resources configured for the first random access configuration information, the following PRACH resources can be valid when enabled, and invalid when not enabled (i.e., the various PRACH resource information for enabling and / or disabling described above can also be referred to as information for indicating that the corresponding PRACH resource can be valid or invalid (not valid)):

[0172] The eighth PRACH resource: in UL and / or Flexible symbols;

[0173] The second PRACH resource: in DL SBFD symbols;

[0174] Third PRACH resource: within SBFD symbol and partly in DL SBFD, or partly in DL SBFD and partly in Flexible SBFD symbol, or across DL SBFD symbol and Flexible SBFD symbol (and within SBFD symbol).

[0175] Wherein, the second PRACH resource and the third PRACH resource can also be collectively referred to as the first PRACH resource (or referred to as the first SBFD PRACH resource, the first additional PRACH resource), which is within the SBFD symbol and (partly / fully / at least partly) overlaps with the DL SBFD symbol (or partly / fully / at least partly in the DL SBFD symbol).

[0176] Figure 9 is a schematic diagram of the PRACH resource configured by the second random access configuration information. As shown in Figure 9, in at least one embodiment of the present application, among the PRACH resources configured by the second random access configuration information, the following PRACH resources can be valid when enabled, and invalid when not enabled (i.e., the various PRACH resource information for enabling and / or disabling described above can also be referred to as information for indicating that the corresponding PRACH resource can be valid or invalid (invalid)):

[0177] Fifth PRACH resource: in SBFD symbol;

[0178] Sixth PRACH resource: starting from SBFD symbol, ending in (UL / F) non-SBFD symbol, and / or overlapping with SBFD symbol and non-SBFD symbol, and / or starting from non-SBFD symbol, ending in SBFD symbol (this case is not shown in the figure);

[0179] Seventh PRACH resource: in (UL / F) non-SBFD symbol.

[0180] Wherein, the fifth PRACH resource to the seventh PRACH resource can also be collectively referred to as the fourth PRACH resource (or referred to as the second SBFD PRACH resource, the second additional PRACH resource).

[0181] It should be noted that in order to facilitate the embodiment of PRACH resources located in different positions in FIG. 8 and FIG. 9, different PRACH formats (formats) are assumed, 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.

[0182] In some embodiments, when the PRACH resources of the above types are 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 not enabled or disabled, there is no need to determine the valid RO in the corresponding PRACH resource (and further there is no need 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 not enabled or disabled, the valid RO in the fourth PRACH resource is not determined.

[0183] 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 SSB symbol, and starts after at least N1 (integer) symbols of the DL symbol and / or 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.

[0184] 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.

[0185] 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.

[0186] 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, and since the SCS of the 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

[0187] In some embodiments, when determining the valid RO, the terminal device can determine the valid RO according to the configured symbol type or the symbol type corresponding to the UL BWP.

[0188] 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.

[0189] In some embodiments, the SSB and the RO can have a mapping (SSB-RO mapping) relationship.

[0190] In some examples, the mapping between 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.

[0191] In some examples, the mapping between 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.

[0192] In some examples, the mapping between 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.

[0193] 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.

[0194] The above embodiments are only illustrative of the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications can be made on the basis of the above embodiments. For example, the above embodiments can be used alone or in combination with one or more of the above embodiments.

[0195] According to the above embodiments of the present application, the terminal device can support contention-based random access outside the uplink time period.

[0196] Embodiments of the second aspect

[0197] The embodiments of the present application provide a random access device. The device may, for example, 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 repeated.

[0198] FIG. 10 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 refer to the embodiments of the first aspect, and the same content will not be repeatedly described.

[0199] As shown in FIG. 10, the random access device 1000 according to an embodiment of the present application includes a first processing unit 1001. The first processing unit 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.

[0200] In addition, for the sake of simplicity, only the connection relationship or signal transmission between the components or modules is shown in FIG. 10, 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, for example, hardware facilities such as processors, memories, transmitters, receivers, etc. The implementation of the present application is not limited thereto.

[0201] The above embodiments are only illustrative of the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications can be made on the basis of the above embodiments. For example, the above embodiments can be used alone or in combination with one or more of the above embodiments.

[0202] Embodiments of the third aspect

[0203] The 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 repeated.

[0204] FIG. 11 is a schematic diagram of a random access method according to an embodiment of the present application. As shown in FIG. 11, the method includes:

[0205] 1101. transmitting, to a terminal device, first random access configuration information and / or second random access configuration information; and

[0206] 1102. performing contention-based random access using a random access resource configured by the first random access configuration information or the second random access configuration information.

[0207] In some embodiments:

[0208] For the first random access configuration information, a first PRACH resource is enabled or disabled by the first information, wherein the first PRACH resource is in a SBFD symbol and overlaps with a DL SBFD symbol, and / or the first PRACH resource includes a second PRACH resource in a DL SBFD symbol and / or a third PRACH resource which is partially in a DL SBFD symbol and partially in a Flexible SBFD symbol; and / or,

[0209] For the second random access configuration information, a fourth PRACH resource is enabled or disabled by default and / or by the first information and / or the second information, wherein the fourth PRACH resource includes a fifth PRACH resource and / or a sixth PRACH resource in a SBFD symbol and / or a seventh PRACH resource in a flexible non-SBFD symbol and / or a UL non-SBFD symbol.

[0210] The sixth PRACH resource starts from a SBFD symbol and overlaps with a non-SBFD symbol, or starts from a SBFD symbol to the end of a non-SBFD symbol, or starts from a SBFD symbol to the end of a flexible non-SBFD symbol or a UL non-SBFD symbol, or overlaps with a SBFD symbol and a non-SBFD symbol, or overlaps with a SBFD symbol and a flexible non-SBFD symbol or a UL non-SBFD symbol, or overlaps with a SBFD symbol and a non-SBFD symbol except a DL non-SBFD symbol.

[0211] In some embodiments, the terminal device is a SBFD-aware UE.

[0212] In some embodiments, the first random access configuration information is used for SBFD-aware UE and / or non-SBFD-aware UE to perform random access, wherein the SBFD-aware UE uses the first PRACH resource corresponding to the first random access configuration information and / or the eighth PRACH resource in UL symbol and / or Flexible symbol to perform random access, and the non-SBFD-aware UE uses the eighth PRACH resource to perform random access.

[0213] In some embodiments, the second random access configuration information is dedicated for SBFD-aware UE to perform random access, wherein the SBFD-aware UE uses the fourth PRACH resource corresponding to the second random access configuration information to perform random access.

[0214] In some embodiments, the first information comprises at least one of the following information:

[0215] Third information for configuring SBFD symbol and / or non-SBFD symbol;

[0216] Fourth information for configuring first sub-band, wherein the first sub-band refers to frequency domain resource, for example, uplink sub-band or uplink available resource block;

[0217] Fifth information for enabling and / or disabling first random access, wherein the first random access comprises second random access and / or third random access, in the second random access, the terminal device is allowed to use the first PRACH resource to send preamble sequence, in the third random access, the terminal device uses the fourth PRACH resource to send PRACH;

[0218] Sixth information for indicating first feature and / or first feature combination corresponding to the first random access,

[0219] Seventh information for enabling and / or disabling the first PRACH resource;

[0220] Eighth information for enabling and / or disabling the second PRACH resource;

[0221] Ninth information for enabling and / or disabling the third PRACH resource;

[0222] And / or,

[0223] The second information comprises at least one of the following information:

[0224] tenth information for enabling and / or disabling the fourth PRACH resource;

[0225] eleventh information for enabling and / or disabling the fifth PRACH resource;

[0226] twelfth information for enabling and / or disabling the sixth PRACH resource;

[0227] thirteenth information for enabling and / or disabling the seventh PRACH resource.

[0228] In some embodiments, in the second random access, the terminal device is further allowed to transmit a preamble sequence using an eighth PRACH resource in a UL symbol and / or a Flexible symbol.

[0229] In some embodiments, in the second random access, the terminal device selects the first PRACH resource or the eighth PRACH resource according to capability and / or measurement result and / or power parameter and / or random access trigger event and / or RRC connection state and / or priority of PRACH resource and / or the Xth information.

[0230] In some embodiments, the Xth information is used to indicate priority of the first PRACH resource and the eighth PRACH resource, and / or is used to indicate the terminal device to use the first physical random access channel (PRACH) resource or the eighth physical random access channel (PRACH) resource for a radio resource control (RRC) connected state and / or a radio resource control inactive (RRC inactive) state and / or a specific random access trigger event.

[0231] 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 or a second IE for configuring cell-specific parameters of a cell, and / or in a third IE for configuring a cell, and / or in a fourth IE for configuring common parameters of a UL BWP, and / or in a fifth IE (RACH-ConfigCommon) for configuring / defining cell-specific random access parameters, and / or in a sixth IE (RACH-ConfigGeneric) for configuring / defining random access parameters, and / or in a seventh IE (FeatureCombinationPreambles) for associating a set of random access resources with a feature or a combination of features, and / or in an eighth IE (FeatureCombination) for indicating a feature or a combination of features associated with a set of random access resources, respectively, wherein the set of random access resources comprises a set of preamble sequences and / or a set of PRACH resources.

[0232] In some embodiments, one or more of the seventh to ninth information comprises: a fourteenth information for enabling and / or disabling the second random access, and / or, a fifteenth information for configuring a frequency domain location of the first PRACH resource, and / or, a sixteenth information for configuring a power parameter corresponding to the first PRACH resource, and / or, a seventeenth information for indicating a second feature and / or a second feature combination corresponding to the second random access; wherein,

[0233] the fifteenth information is different from an eighteenth information for configuring a frequency domain location of an eighth PRACH resource in a UL symbol and / or a Flexible symbol corresponding to the first random access configuration information,

[0234] the sixteenth information is different from a nineteenth information for configuring a power parameter corresponding to the eighth PRACH resource;

[0235] and / or,

[0236] one or more of the tenth to thirteenth information comprises: a twentieth information for enabling and / or disabling a third random access, and / or a twenty first information for indicating a third feature and / or a third feature combination corresponding to the third random access, and / or a twenty second information for indicating a PRACH configuration table.

[0237] In some embodiments, when the terminal device is provided with a twenty third information for indicating a fourth feature and / or a fourth feature combination corresponding to a fourth random access, the first PRACH resource and / or the fourth PRACH resource is not enabled and / or the terminal device does not expect the first PRACH resource and / or the fourth PRACH resource to be enabled, or, when the first PRACH resource and / or the fourth PRACH resource is enabled, the terminal device is not provided with the twenty third information.

[0238] wherein, in the fourth random access, the terminal device is allowed to transmit a preamble sequence associated with the fourth feature and / or the fourth feature combination using an eighth PRACH resource in a UL symbol and / or a Flexible symbol, the twenty third information is included in an eighth IE (FeatureCombination) for indicating a feature or a feature combination associated with a set of random access resources.

[0239] In some embodiments, the first random access configuration information and the second random access configuration information respectively comprise the fifth IE.

[0240] In some embodiments, one or more of the seventh to ninth information is optionally present in one or more of the fifth to eighth IEs included in the first information field and / or the second information field and / or the ninth IE, and / or is absent in one or more of the fifth to eighth IEs included in the third information field.

[0241] In some embodiments, one or more of the seventh to ninth information is optionally present in one or more of the fifth to eighth IEs included in the first information field and / or the second information field and / or the ninth IE, and / or is absent in one or more of the fifth to eighth IEs included in the third information field.

[0242] In some embodiments, one or more of the tenth to thirteenth information is optionally present in one or more of the fifth to seventh IEs included in the second information field and / or the ninth IE, and / or is absent in one or more of the fifth to eighth IEs included in the third information field.

[0243] In some embodiments, in one or more of the fifth to eighth IEs, when one or more of the seventh to ninth information is present, a fifteenth information for configuring a frequency domain location of the first PRACH resource and / or a sixteenth information for configuring a power parameter corresponding to the first PRACH resource is optionally present or must be present.

[0244] In some embodiments, when the fifteenth information is absent, the frequency domain location of the first PRACH resource is the same as the eighth PRACH resource, and when the sixteenth information is absent, the power parameter corresponding to the first PRACH resource is the same as the eighth PRACH.

[0245] In some embodiments, in one or more of the fifth to eighth IEs, when one or more of the tenth to thirteenth information is present, a twenty-second information for indicating a PRACH configuration table is optionally present or must be present.

[0246] In some embodiments, when the twenty-second information is absent, a PRACH configuration table for TDD or FDD is applied.

[0247] In some embodiments, in the fifth to eighth IEs, when the sixth information corresponding to the first random access and / or the first feature combination is present in the eighth IE, one or more of the seventh to thirteenth information is optionally present, and / or when the sixth information corresponding to the first random access and / or the first feature combination is present in the eighth IE, one or more of the seventh to thirteenth information is absent.

[0248] In some embodiments, in the fifth IE, one or more of the seventh to thirteenth information coexists with the nineteenth information for specifying a series of preamble partitions associated with a feature combination.

[0249] In some embodiments, in the fifth IE, when one or more of the fifth to ninth information coexists with the nineteenth information for specifying a series of preamble partitions associated with a feature combination, the nineteenth information applies to the first PRACH resource and / or the eighth PRACH resource.

[0250] In some embodiments, in the fifth IE, when one or more of the fifth to ninth information coexists with the twenty-fourth information for specifying a series of preamble partitions associated with a feature combination, the twenty-fourth information applies to the first PRACH resource, and does not apply to the eighth PRACH resource.

[0251] In some embodiments, the fifth IE optionally includes the twenty-fourth information for specifying a series of preamble partitions associated with a feature combination, the twenty-fourth information only applies to the first PRACH resource or the fourth PRACH resource.

[0252] In some embodiments, in the fifth IE, when one or more of the tenth to thirteenth information coexists with the nineteenth information or the twenty-fourth information for specifying a series of preamble partitions associated with a feature combination, the nineteenth information or the twenty-fourth information applies to the fourth PRACH resource.

[0253] In some embodiments, in one or more of the fifth to sixth IE, when one or more of the tenth to thirteenth information exists, the nineteenth information for specifying a series of preamble partitions associated with a feature combination is optionally present.

[0254] In some embodiments, the first random access configuration information is used to support the second random access and / or the fourth random access, and the second random access configuration information is used to support the third random access.

[0255] In some embodiments, the terminal device performs the second random access or the third random access or the fourth random access according to capability and / or measurement result and / or power parameter and / or random access triggering event and / or RRC connection state and / or priority and / or the twenty-fifth information.

[0256] In some embodiments, the terminal device supports one or more of the second to fourth random access, and / or, the terminal device reports relevant capability.

[0257] In some examples, the priority comprises: the third random access > the second random access, or the third random access > the second random access > the fourth random access. Wherein, when the terminal device supports the second random access and the third random access, and is provided with the first random access configuration information for supporting the second random access and the second random access configuration information for supporting the third random access, the terminal device performs the third random access.

[0258] In addition, in some other examples, the priority can also be other cases, for example: the second random access > the third random access, or the second random access > the third random access > the fourth random access; or, the second random access > the fourth random access, or the second random access > the fourth random access > the third random access; or, the fourth random access > the third random access, or the fourth random access > the third random access > the second random access, etc.

[0259] In some embodiments, when the terminal device is provided with the first random access configuration information and the second random access configuration information, the first random access configuration information is used for supporting the second random access, and the terminal device supports the second random access and the third random access, if the measurement result is lower than or not greater than a first threshold value, the terminal device performs the third random access or the second random access.

[0260] In some embodiments, when the terminal device is provided with only the first random access configuration information, the first random access configuration information is used for supporting the second random access and the fourth random access, and the terminal device supports the second random access and the fourth random access, when the measurement result is lower than or not greater than a second threshold value, the terminal device performs the second random access or the fourth random access.

[0261] In some embodiments, when the target receiving power corresponding to the first PRACH resource is greater than the target receiving power corresponding to the eighth PRACH resource, the terminal device performs the second random access.

[0262] In some embodiments, when the terminal device is provided with the first random access configuration information and the second random access configuration information, the first random access configuration information is used for supporting the second random access and the fourth random access:

[0263] If the measurement result is lower than or not greater than a first threshold value, the UE performs the third random access; and / or,

[0264] If the measurement result is greater than the first threshold value and lower than or not greater than a second threshold value, the UE performs the fourth random access; and / or,

[0265] If the measurement result is greater than the first threshold, the UE performs the second random access when the target received power corresponding to the first PRACH resource is greater than the target received power corresponding to the eighth PRACH resource; and / or,

[0266] If the measurement result is greater than the second threshold, the UE performs the second random access; and / or,

[0267] If the measurement result is greater than the second threshold and the target received power corresponding to the first PRACH resource is greater than the target received power corresponding to the eighth PRACH resource, the UE performs the second random access.

[0268] In some embodiments, the twenty-fifth information is used to indicate the priority of one or more of the second to fourth random accesses, and / or is used to indicate one or more of the second to fourth random accesses for the RRC connected state and / or the RRC inactive state and / or a specific random access trigger event.

[0269] The above only describes each step or process 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.

[0270] The above various embodiments only exemplarily describe the embodiments of the present application, but the present application is not limited thereto, and can also be appropriately modified on the basis of the above various embodiments. For example, the above various embodiments can be used alone, or one or more of the above various embodiments can be combined.

[0271] Embodiments of the fourth aspect

[0272] The embodiments of the present application provide a random access device. The device can be a network device, or can be one or more components or assemblies configured in the network device. The same content as the embodiments of the third aspect will not be described again.

[0273] FIG. 12 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 thereof can be referred to the embodiments of the third aspect, and the same content will not be described again.

[0274] As shown in FIG. 12, the random access device 1200 according to an embodiment of the present application includes a second processing unit 1201. The second processing unit 1201 controls the network device to perform operations to implement the method described in the embodiments of the third aspect. The specific content of the operations can be referred to the embodiments of the third aspect, which will not be described again here.

[0275] 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 related technologies.

[0276] In addition, for the sake of simplicity, only the connection relationship or signal path between the various components or modules is exemplarily shown in FIG. 12, but those skilled in the art should understand that various related technologies such as bus connection can be used. The various components or modules described above can be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc.; the present application is not limited thereto.

[0277] The above embodiments only exemplarily describe the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications can be made 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.

[0278] Embodiments of the fifth aspect

[0279] The embodiments of the present application also provide a communication system, which can be referred to FIG. 1, and the same content as the embodiments of the first to fourth aspects will not be described.

[0280] In some embodiments, the communication system 100 can at least include: a network device 101 including the random access device in the embodiments of the fourth aspect, and / or a terminal device 102 including the random access device in the embodiments of the second aspect, which will not be described here.

[0281] 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.

[0282] 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. 14, for example.

[0283] FIG. 13 is a schematic block diagram of the electronic device. As shown in FIG. 13, the electronic device 1300 can include a processor 1310 and a memory 1320; the memory 1320 is coupled to the processor 1310. The memory 1320 can store various data; in addition, it also stores a program 1330 for information processing, and executes the program 1330 under the control of the processor 1310 to receive or send various information.

[0284] In one embodiment, the processor 1310 can be configured to execute the method in the first aspect embodiment and / or the method in the second aspect embodiment.

[0285] In addition, as shown in FIG. 13, the electronic device 1300 can further include a transceiver 1340 and an antenna 1350, etc. The functions of the above components are similar to those of the prior art, and thus will not be described here. It is worth noting that the electronic device 1300 does not necessarily include all the components shown in FIG. 13; in addition, the electronic device 1300 can also include components not shown in FIG. 13, which can be referred to the prior art.

[0286] The embodiments of the present application also provide a computer readable program, which, when executed in the random access device or the network device, causes the computer to perform the method of the embodiments of the third aspect.

[0287] The embodiments of the present application also provide a storage medium storing a computer readable program, which causes the computer to perform the method of the embodiments of the third aspect in the random access device or the network device.

[0288] The embodiments of the present application also provide a computer readable program, which, when executed in the random access device or the terminal device, causes the computer to perform the method of the embodiments of the first aspect.

[0289] The embodiments of the present application also provide a storage medium storing a computer readable program, which causes the computer to perform the method of the embodiments of the first aspect in the random access device or the terminal device.

[0290] The above apparatus and method of the present application can be implemented by hardware, or by a combination of hardware and software. The present application relates to a computer readable program, which, when executed by a logic component, can cause the logic component to implement the above apparatus or constituent components, or to implement the above various methods or steps. 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.

[0291] The method / apparatus 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 blocks shown in the figures and / or a combination of one or more of the functional blocks can correspond to a software module of a computer program flow, or to a hardware module. These software modules can correspond to the respective steps shown in the figures. These hardware modules can be implemented by, for example, fixing the software modules with a field programmable gate array (FPGA).

[0292] The software module 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 module can be stored in a memory location that can be accessed by a processor in a mobile terminal, or in a memory location that can be loaded into the mobile terminal using a storage card, for example a MEGA-SIM card or a flash memory device. If the device, such as a mobile terminal, uses a MEGA-SIM card or a flash memory device with a large capacity, the software module can be stored in the MEGA-SIM card or the flash memory device.

[0293] 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 application. 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.

[0294] The application has been described above with the attachment of specific implementations. However, it should be apparent to those skilled in the art that the description is exemplary and not limiting of the scope of the application. Various modifications and changes can be made by those skilled in the art which follow from the disclosure and this description, and such modifications and changes are intended to fall within the scope of the application.

Claims

1. An apparatus of random access, applied to a terminal device, characterized in that, The apparatus comprises a first processing unit, which controls the terminal device to perform the following operations: receive first random access configuration information and / or second random access configuration information; and perform contention-based random access using random access resources configured by the first random access configuration information or the second random access configuration information, wherein, for the first random access configuration information, a first physical random access channel (PRACH) resource is enabled or disabled by first information, wherein the first physical random access channel (PRACH) resource is in a first symbol and overlaps with a downlink (DL) first symbol, and / or the first physical random access channel (PRACH) resource includes a second physical random access channel (PRACH) resource in a downlink (DL) first symbol and / or a third PRACH resource which is partly in a downlink (DL) first symbol and partly in a flexible (Flexible) first symbol; and / or, for the second random access configuration information, a fourth physical random access channel (PRACH) resource is enabled or disabled by default and / or by first information and / or second information, wherein the fourth physical random access channel (PRACH) resource includes a fifth physical random access channel (PRACH) resource and / or a sixth physical random access channel (PRACH) resource in a first symbol and / or a seventh physical random access channel (PRACH) resource in a flexible (flexible) second symbol and / or an uplink (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.

2. The method of claim 1, wherein, The first information includes at least one of the following information: third information for configuring the first symbol and / or the second symbol; fourth information for configuring a first sub-band; fifth information for enabling and / or disabling a first random access, the first random access including a second random access in which the terminal device is allowed to transmit a preamble sequence using the first physical random access channel (PRACH) resource and / or a third random access in which the terminal device transmits a physical random access channel (PRACH) using the fourth physical random access channel (PRACH) resource; sixth information for indicating a first feature and / or a first feature combination corresponding to the first random access, seventh information for enabling and / or disabling the first physical random access channel (PRACH) resource; eighth information for enabling and / or disabling the second physical random access channel (PRACH) resource; a ninth information for enabling and / or disabling the third physical random access channel (PRACH) resource; and / or, the second information comprises at least one of the following information: a tenth information for enabling and / or disabling the fourth physical random access channel (PRACH) resource; an eleventh information for enabling and / or disabling the fifth physical random access channel (PRACH) resource; a twelfth information for enabling and / or disabling the sixth physical random access channel (PRACH) resource; a thirteenth information for enabling and / or disabling the seventh physical random access channel (PRACH) resource.

3. The method of claim 2, wherein, In the second random access, the terminal device selects the first physical random access channel (PRACH) resource or the eighth physical random access channel (PRACH) resource according to capability and / or measurement result and / or power parameter and / or random access trigger event and / or radio resource control (RRC) connection state and / or priority of PRACH resource and / or Xth information.

4. The method of claim 3, wherein, The Xth information is used to indicate the priority of the first PRACH resource and the eighth PRACH resource, and / or to indicate the terminal device to use the first physical random access channel (PRACH) resource or the eighth physical random access channel (PRACH) resource for radio resource control (RRC) connected state and / or radio resource control inactive (RRC inactive) state and / or specific random access trigger event.

5. The method of claim 2, wherein, The at least one information comprised in the first information and / or the at least one information comprised in the second information is comprised in a first information element (IE) or a second information element (IE) for configuring cell-specific parameters of a cell, and / or in a third information element (IE) for configuring a cell, and / or in a fourth IE for configuring common parameters of an uplink bandwidth part (UL BWP), and / or in a fifth information element (IE) (RACH-ConfigCommon) for configuring / defining cell-specific random access parameters, and / or in a sixth IE (RACH-ConfigGeneric) for configuring / defining random access parameters, and / or in a seventh information element (IE) (FeatureCombinationPreambles) for associating a set of random access resources with a feature or a combination of features, and / or in an eighth information element (IE) (FeatureCombination) for indicating a feature or a combination of features associated with a set of random access resources, respectively, wherein the set of random access resources comprises a set of preamble sequences and / or a set of physical random access channel (PRACH) resources.

6. The method of claim 2, wherein, One or more of the seventh to ninth information comprises: a fourteenth information for enabling and / or disabling the second random access, and / or, a fifteenth information for configuring a frequency domain location of the first physical random access channel (PRACH) resource, and / or, a sixteenth information for configuring a power parameter corresponding to the first physical random access channel (PRACH) resource, and / or, a seventeenth information for indicating a second feature and / or a second feature combination corresponding to the second random access; wherein, the fifteenth information is different from an eighteenth information for configuring a frequency domain location of an eighth physical random access channel (PRACH) resource in an uplink (UL) symbol and / or a flexible symbol corresponding to the first random access configuration information, the sixteenth information is different from a nineteenth information for configuring a power parameter corresponding to the eighth physical random access channel (PRACH) resource; and / or, one or more of the tenth to thirteenth information comprises: a twentieth information for enabling and / or disabling a third random access, and / or a twenty-first information for indicating a third feature and / or a third feature combination corresponding to the third random access, and / or a twenty-second information for indicating a physical random access channel (PRACH) configuration table.

7. The method of claim 1, wherein, when the terminal device is provided with a twenty-third information for indicating a fourth feature and / or a fourth feature combination corresponding to a fourth random access, the first physical random access channel (PRACH) resource and / or a fourth physical random access channel (PRACH) resource is not enabled and / or the terminal device does not expect the first physical random access channel (PRACH) resource and / or the fourth physical random access channel (PRACH) resource to be enabled, or, when the first physical random access channel (PRACH) resource and / or the fourth physical random access channel (PRACH) resource is enabled, the terminal device is not provided with the twenty-third information, wherein in the fourth random access, the terminal device is allowed to transmit a preamble sequence associated with the fourth feature and / or the fourth feature combination using an eighth physical random access channel (PRACH) resource in an uplink (UL) symbol and / or a flexible symbol, the twenty-third information is included in an eighth IE (FeatureCombination) for indicating a feature or a feature combination associated with a random access resource set.

8. The method of claim 5, wherein, In one or more of the fifth to eighth information elements (IEs), one or more of the seventh to ninth information is different from one or more of the tenth to thirteenth information.

9. The method of claim 8, wherein, One or more of the seventh to ninth information is optionally present in one or more of the fifth to eighth information elements (IEs) included in the first information field and / or the second information field and / or the ninth information element (IE), and / or is not present in one or more of the fifth to eighth information elements (IEs) included in the third information field.

10. The method of claim 8, wherein, One or more of the tenth to thirteenth information is optionally present in one or more of the fifth to seventh information elements (IEs) included in the second information field and / or the ninth information element (IE), and / or is not present in one or more of the fifth to eighth information elements (IEs) included in the third information field.

11. The method of claim 8, wherein, In one or more of the fifth to eighth information elements (IEs), when one or more of the seventh to ninth information is present, a fifteenth information for configuring a frequency domain location of the first physical random access channel (PRACH) resource and / or a sixteenth information for configuring a power parameter corresponding to the first physical random access channel (PRACH) resource is optionally present or must be present.

12. The method of claim 8, wherein, In one or more of the fifth to eighth information elements (IEs), when one or more of the tenth to thirteenth information is present, a twenty-second information for indicating a physical random access channel (PRACH) configuration table is optionally present or must be present.

13. The method of claim 8, wherein, In the fifth information element (IE) to the eighth information element (IE), when the eighth information element (IE) exists the sixth information corresponding to the first feature and / or the first feature combination of the first random access, one or more of the seventh to thirteenth information is optionally present, and / or when the eighth information element (IE) exists the sixth information corresponding to the first feature and / or the first feature combination of the first random access, one or more of the seventh to thirteenth information is not present.

14. The method of claim 8, wherein, In the fifth information element (IE), when one or more of the fifth to ninth information is present simultaneously with the nineteenth information for specifying a series of preamble partitions associated with a feature combination, the nineteenth information applies to the first physical random access channel (PRACH) resource and / or the eighth physical random access channel (PRACH) resource.

15. The method of claim 8, wherein, In the fifth information element (IE), when one or more of the fifth to ninth information is present simultaneously with the twenty-fourth information for specifying a series of preamble partitions associated with a feature combination, the twenty-fourth information applies to the first physical random access channel (PRACH) resource, and does not apply to the eighth physical random access channel (PRACH) resource.

21. The method of claim 10, wherein the fifth IE optionally includes the twenty-fourth information for specifying a series of preamble partitions associated with a feature combination, the twenty-fourth information applies to the first PRACH resource or the fourth PRACH resource.

16. The method of claim 8, wherein, In one or more of the fifth to sixth information elements (IEs), the nineteenth information for specifying a series of preamble partitions associated with a feature combination is optionally present when one or more of the tenth to thirteenth information elements is present.

17. The method of claim 1, wherein, The terminal device performs the second random access or the third random access or the fourth random access according to the capability and / or the measurement result and / or the power parameter and / or the random access trigger event and / or the radio resource control (RRC) connection state and / or the priority and / or the twenty-fifth information.

18. The method of claim 17, wherein, The terminal device supports one or more of the second to fourth random accesses, and / or, the terminal device reports the related capability.

19. The method of claim 17, wherein, The twenty-fifth information is used to indicate the priority of one or more of the second to fourth random accesses, and / or is used to indicate one or more of the second to fourth random accesses for the radio resource control (RRC) connected state and / or the radio resource control inactive (RRC inactive) state and / or a specific random access trigger event.

20. An apparatus for random access, applied to a network device, the apparatus comprising: The apparatus comprises a second processing unit, which controls the network device to: send first random access configuration information and / or second random access configuration information to a terminal device; and perform contention-based random access using random access resources configured by the first random access configuration information or the second random access configuration information, wherein, for the first random access configuration information, a first physical random access channel (PRACH) resource is enabled or disabled by a first information, wherein the first physical random access channel (PRACH) resource is in a first symbol and overlaps with a downlink (DL) first symbol, and / or the first physical random access channel (PRACH) resource includes a second physical random access channel (PRACH) resource in the downlink (DL) first symbol and / or a third PRACH resource which is partially in the downlink (DL) first symbol and partially in a flexible (Flexible) first symbol; and / or, for the second random access configuration information, a fourth physical random access channel (PRACH) resource is enabled or disabled by default and / or is enabled or disabled by a first information and / or a second information, wherein the fourth physical random access channel (PRACH) resource includes a fifth physical random access channel (PRACH) resource and / or a sixth physical random access channel (PRACH) resource in the first symbol and / or a seventh physical random access channel (PRACH) resource in a flexible (flexible) second symbol and / or an uplink (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. ​

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