Method and apparatus related to random access in node for wireless communication

Abstract

Methods and apparatus related to random access in a node for wireless communication are disclosed. The method for the terminal is characterized by comprising the following steps: sending a first random access preamble; the first random access preamble is randomly selected from a plurality of random access preambles in a target random access resource set at a medium probability; wherein the target random access resource set is randomly selected from a plurality of random access resource sets according to probability distribution.

Description

Technical Field

[0001] The present application relates to a transmission method and device in a wireless communication system, and in particular to a transmission method and device for wireless signals in a wireless communication system supporting a cellular network. Background Art

[0002] Random access is a key technology in wireless communications. 3GPP (3rd Generation Partner Project) has discussed the introduction of additional random access configurations (i.e., multiple groups of random access configurations) based on conventional random access configurations for multiple scenarios (e.g., scenarios where SubBand non-overlapping Full Duplex (SBFD) mode is applied, scenarios where network energy-saving technology is applied, etc.). Summary of the invention

[0003] How to select random access resources for PRACH (Physical Random Access CHannel) transmission is a key issue in the random access process; the present application discloses a solution to the above problem. It should be noted that in the description of the present application, only the scenario of applying sub-band non-overlapping full-duplex mode or the scenario of applying network energy-saving technology is used as a typical application scenario or example; the present application is also applicable to other scenarios facing similar problems outside the above two scenarios, and achieves similar technical effects. In addition, the use of a unified solution for different scenarios (including but not limited to the scenario of applying sub-band non-overlapping full-duplex, the scenario of applying network energy-saving technology, and other scenarios facing similar problems outside these two scenarios) can also help reduce hardware complexity and cost, or improve performance. In the absence of conflict, the embodiments and features in any node of the present application can be applied to any other node. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other.

[0004] If necessary, the interpretation of the terms in this application may refer to the description of the 3GPP specification protocols TS37 series and TS38 series.

[0005] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0006] Sending a first random access preamble; the first random access preamble is randomly selected with medium probability from a plurality of random access preambles in a target random access resource set;

[0007] The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution.

[0008] As an embodiment, the first node is a terminal.

[0009] As an embodiment, the problem to be solved by the present application includes: after configuring multiple groups of random access resources, how to determine a random access preamble (Random Access Preamble) to be sent.

[0010] As an embodiment, the problem to be solved by the present application includes: how to determine the first random access preamble code.

[0011] As an embodiment, the problem to be solved by the present application includes: how to improve the utilization efficiency of random access resources.

[0012] As an embodiment, the above method allows a random access resource set to be randomly selected from multiple random access resource sets according to a probability distribution for subsequent determination of a random access preamble code to be sent; the method can simply and effectively realize the utilization of random access resources in the multiple random access resource sets, which is conducive to improving the utilization efficiency of random access resources and has a small workload for standardization.

[0013] As an embodiment, the benefits of the above method include: it is helpful to improve the utilization efficiency of the random access preamble code.

[0014] As an embodiment, the benefits of the above method include: being helpful in improving the efficiency of random access.

[0015] According to one aspect of the present application, the above method is characterized in that:

[0016] The first random access preamble is sent using a first PRACH opportunity; the first PRACH opportunity is randomly selected with medium probability from a plurality of PRACH opportunities in the target random access resource set.

[0017] According to one aspect of the present application, the above method is characterized in that it includes:

[0018] Select the first SSB;

[0019] The first random access preamble is a random access preamble mapped to the first SSB, and the first PRACH opportunity is a PRACH opportunity to which the first SSB is mapped.

[0020] According to one aspect of the present application, the above method is characterized in that:

[0021] Each of the multiple random access resource sets includes at least one random access preamble code corresponding to each SSB in the multiple SSBs.

[0022] As an embodiment, the above method allows each random access resource set to be independently configured, and has high configuration flexibility.

[0023] According to one aspect of the present application, the above method is characterized in that:

[0024] The multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0025] According to one aspect of the present application, the above method is characterized in that:

[0026] The first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0027] As an embodiment, the above method allows configuring PRACH opportunities in full-duplex symbols, which increases available random access resources and is beneficial to improving the performance of random access.

[0028] According to one aspect of the present application, the above method is characterized in that:

[0029] The target random access resource set is randomly selected with equal probability from the multiple random access resource sets.

[0030] As an embodiment, the benefits of the above method include: reducing the complexity of system design.

[0031] According to one aspect of the present application, the above method is characterized in that:

[0032] The target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

[0033] As an embodiment, the benefits of the above method include: being able to optimize the first probability distribution through configuration, so as to select random access resources more evenly, so as to further reduce the collision probability of random access.

[0034] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0035] Receiving a first random access preamble; the first random access preamble is randomly selected with medium probability from a plurality of random access preambles in a target random access resource set;

[0036] The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution.

[0037] As an embodiment, the second node is a base station.

[0038] According to one aspect of the present application, the above method is characterized in that:

[0039] The first random access preamble is received in a first PRACH opportunity; the first PRACH opportunity is randomly selected with medium probability from a plurality of PRACH opportunities in the target random access resource set.

[0040] According to one aspect of the present application, the above method is characterized in that:

[0041] The first random access preamble is a random access preamble mapped to a first SSB, and the first PRACH opportunity is a PRACH opportunity to which the first SSB is mapped.

[0042] According to one aspect of the present application, the above method is characterized in that:

[0043] Each of the multiple random access resource sets includes at least one random access preamble code corresponding to each SSB in the multiple SSBs.

[0044] According to one aspect of the present application, the above method is characterized in that:

[0045] The multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0046] According to one aspect of the present application, the above method is characterized in that:

[0047] The first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0048] According to one aspect of the present application, the above method is characterized in that:

[0049] The target random access resource set is randomly selected with equal probability from the multiple random access resource sets.

[0050] According to one aspect of the present application, the above method is characterized in that:

[0051] The target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

[0052] The present application discloses a first node used for wireless communication, characterized in that it includes:

[0053] A first transmitter sends a first random access preamble code; the first random access preamble code is randomly selected with medium probability from multiple random access preamble codes in a target random access resource set;

[0054] The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution.

[0055] The present application discloses a second node used for wireless communication, characterized in that it includes:

[0056] A second receiver receives a first random access preamble code; the first random access preamble code is randomly selected with medium probability from multiple random access preamble codes in the target random access resource set;

[0057] The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution.

[0058] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0059] Using a first PRACH opportunity to send a random access preamble; the first PRACH opportunity is randomly selected with medium probability from a plurality of PRACH opportunities in a target random access resource set;

[0060] The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution.

[0061] As an embodiment, the first node is a terminal.

[0062] As an embodiment, the problem to be solved by the present application includes: after configuring multiple groups of random access resources, how to determine the PRACH opportunity for PRACH transmission.

[0063] As an embodiment, the problem to be solved by the present application includes: how to determine the first PRACH opportunity.

[0064] As an embodiment, the above method allows a random access resource set to be randomly selected from multiple random access resource sets according to a probability distribution for subsequent determination of the PRACH opportunity to be used; the method can simply and effectively realize the utilization of random access resources in the multiple random access resource sets, which is conducive to improving the utilization efficiency of random access resources and the standardization workload is small.

[0065] As an embodiment, the benefits of the above method include: being helpful in improving the efficiency of random access.

[0066] According to one aspect of the present application, the above method is characterized in that:

[0067] The first PRACH opportunity is used to send a first random access preamble; the first random access preamble is randomly selected with medium probability from a plurality of random access preambles in the target random access resource set.

[0068] According to one aspect of the present application, the above method is characterized in that it includes:

[0069] Select the first SSB;

[0070] The first random access preamble is a random access preamble mapped to the first SSB, and the first PRACH opportunity is a PRACH opportunity to which the first SSB is mapped.

[0071] According to one aspect of the present application, the above method is characterized in that:

[0072] Each of the multiple random access resource sets includes at least one random access preamble code corresponding to each SSB in the multiple SSBs.

[0073] According to one aspect of the present application, the above method is characterized in that:

[0074] Each of the multiple random access resource sets includes at least one PRACH opportunity corresponding to each SSB in the multiple SSBs.

[0075] As an embodiment, the above method allows each random access resource set to be independently configured, and has high configuration flexibility.

[0076] According to one aspect of the present application, the above method is characterized in that:

[0077] The multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0078] According to one aspect of the present application, the above method is characterized in that:

[0079] The first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0080] As an embodiment, the above method allows configuring PRACH opportunities in full-duplex symbols, which increases available random access resources and is beneficial to improving the performance of random access.

[0081] According to one aspect of the present application, the above method is characterized in that:

[0082] The target random access resource set is randomly selected with equal probability from the multiple random access resource sets.

[0083] As an embodiment, the benefits of the above method include: reducing the complexity of system design.

[0084] According to one aspect of the present application, the above method is characterized in that:

[0085] The target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

[0086] As an embodiment, the benefits of the above method include: being able to optimize the first probability distribution through configuration, so as to select random access resources more evenly, so as to further reduce the collision probability of random access.

[0087] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0088] Receiving a random access preamble in a first PRACH opportunity; the first PRACH opportunity is randomly selected with medium probability from a plurality of PRACH opportunities in a target random access resource set;

[0089] The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution.

[0090] As an embodiment, the second node is a base station.

[0091] According to one aspect of the present application, the above method is characterized in that:

[0092] A first random access preamble is received in the first PRACH opportunity; the first random access preamble is randomly selected with medium probability from a plurality of random access preambles in the target random access resource set.

[0093] According to one aspect of the present application, the above method is characterized in that:

[0094] The first random access preamble is a random access preamble mapped to a first SSB, and the first PRACH opportunity is a PRACH opportunity to which the first SSB is mapped.

[0095] According to one aspect of the present application, the above method is characterized in that:

[0096] Each of the multiple random access resource sets includes at least one random access preamble code corresponding to each SSB in the multiple SSBs.

[0097] According to one aspect of the present application, the above method is characterized in that:

[0098] Each of the multiple random access resource sets includes at least one PRACH opportunity corresponding to each SSB in the multiple SSBs.

[0099] According to one aspect of the present application, the above method is characterized in that:

[0100] The multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0101] According to one aspect of the present application, the above method is characterized in that:

[0102] The first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0103] According to one aspect of the present application, the above method is characterized in that:

[0104] The target random access resource set is randomly selected with equal probability from the multiple random access resource sets.

[0105] According to one aspect of the present application, the above method is characterized in that:

[0106] The target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

[0107] The present application discloses a first node used for wireless communication, characterized in that it includes:

[0108] A first transmitter uses a first PRACH opportunity to send a random access preamble; the first PRACH opportunity is randomly selected with medium probability from multiple PRACH opportunities in a target random access resource set;

[0109] The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution.

[0110] The present application discloses a second node used for wireless communication, characterized in that it includes:

[0111] A second receiver receives a random access preamble in a first PRACH opportunity; the first PRACH opportunity is randomly selected with medium probability from a plurality of PRACH opportunities in a target random access resource set;

[0112] The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0113] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0114] Figure 1 A processing flow chart of a first node according to an embodiment of the present application is shown;

[0115] Figure 2 A schematic diagram of a network architecture according to an embodiment of the present application is shown;

[0116] Figure 3 A schematic diagram showing a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application is shown;

[0117] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0118] Figure 5 A signal transmission flow chart according to an embodiment of the present application is shown;

[0119] Figure 6 A schematic diagram illustrating the relationship between a first random access preamble and a target random access resource set according to an embodiment of the present application is shown;

[0120] Figure 7 A schematic diagram illustrating random access resources included in one random access resource set among multiple random access resource sets according to an embodiment of the present application is shown;

[0121] Figure 8 A schematic diagram illustrating the relationship between a first PRACH opportunity and a target random access resource set according to an embodiment of the present application is shown;

[0122] Fig. 9 A schematic diagram illustrating random access resources included in one random access resource set among multiple random access resource sets according to an embodiment of the present application is shown;

[0123] Fig.10 A schematic diagram illustrating random access resources included in one random access resource set among multiple random access resource sets according to an embodiment of the present application is shown;

[0124] Fig.11 A schematic diagram illustrating multiple random access resource sets according to an embodiment of the present application is shown;

[0125] Fig.12 A schematic diagram illustrating multiple random access resource sets according to an embodiment of the present application is shown;

[0126] Fig.13 A schematic diagram illustrating a first probability distribution according to an embodiment of the present application is shown;

[0127] Fig.14 A structural block diagram of a processing device used in a first node according to an embodiment of the present application is shown;

[0128] Fig.15 A structural block diagram of a processing device used in a second node according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0129] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

[0130] Example 1

[0131] Embodiment 1 illustrates a processing flow chart of a first node according to an embodiment of the present application, as shown in the attached Figure 1 shown.

[0132] In Embodiment 1, the first node in the present application sends a first random access preamble code in step 101.

[0133] As a sub-embodiment of Embodiment 1, the first random access preamble code is randomly selected with medium probability from multiple random access preamble codes in a target random access resource set; the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution.

[0134] As a sub-embodiment of Embodiment 1, the first node uses the first PRACH opportunity to send the first random access preamble code; the first PRACH opportunity is randomly selected with medium probability from multiple PRACH opportunities in a target random access resource set; the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution.

[0135] As an embodiment, the target random access resource set is a random access resource set (RandomAccess resource) among the multiple random access resource sets.

[0136] As an embodiment, the target random access resource set includes multiple random access preamble code sets, and the multiple random access preamble code sets in the target random access resource set respectively correspond to multiple SSBs in the first SSB set.

[0137] As an embodiment, the first node receives the multiple SSBs in the first SSB set.

[0138] As an embodiment, for each random access preamble set in the multiple random access preamble sets in the target random access resource set, the included random access preambles are mapped to a corresponding SSB (Synchronization Signal Block).

[0139] As an embodiment, each random access preamble set in the multiple random access preamble sets in the target random access resource set is composed of random access preambles mapped to corresponding SSBs in the target random access resource set.

[0140] As an embodiment, the random access preamble code of each SSB in the multiple SSBs in the first SSB set mapped to the target random access resource set is determined based on the configuration.

[0141] As an embodiment, the first node selects a first SSB.

[0142] As an embodiment, the selection behaviors involved in this application are all executed by the first node in this application.

[0143] As a sub-embodiment of the above embodiment, the second node in the present application can learn the rules followed by the selection behavior executed by the first node according to the agreement between the communicating parties.

[0144] As an embodiment, the first random access preamble code set is one of the multiple random access preamble code sets in the target random access resource set, and the first random access preamble code set corresponds to the first SSB.

[0145] As an embodiment, the first node independently determines the first SSB from the multiple SSBs in the first SSB set.

[0146] As an embodiment, the first node measures the SS-RSRP (Synchronization Signal Reference Signal Received Power) of the multiple SSBs in the first SSB set; if an SSB with SS-RSRP higher than a first threshold is available, the first SSB is an SSB among the multiple SSBs in the first SSB set whose SS-RSRP is higher than the first threshold; otherwise, the first SSB is an SSB among the multiple SSBs in the first SSB set determined by the first node; the first threshold is configurable.

[0147] As an embodiment, SS-RSRP is defined as the linear average of the power contributions (in [W]) of resource elements carrying SSS (Secondary Synchronization Signals).

[0148] As an embodiment, the first threshold is configured by RRC signaling.

[0149] As an embodiment, the first threshold is indicated by rsrp-ThresholdSSB.

[0150] As an embodiment, the first threshold is indicated by rsrp-ThresholdSSB-SUL.

[0151] As an embodiment, the first threshold is configured by MAC CE (Medium Access Control layer Control Element, media access control layer control element).

[0152] As an embodiment, the first node measures the SS-RSRP of the multiple SSBs in the first SSB set; the first SSB is the SSB with the highest SS-RSRP among the multiple SSBs in the first SSB set.

[0153] As an embodiment, the first random access preamble code is a random access preamble code mapped to the first SSB.

[0154] As an embodiment, the first PRACH opportunity in the present application is a PRACH opportunity corresponding to the first SSB.

[0155] As an embodiment, the multiple random access resource sets are all configurable.

[0156] As an embodiment, the random access preamble belongs to the random access resource.

[0157] As an embodiment, each of the multiple random access resource sets includes multiple random access preamble codes.

[0158] As an embodiment, the multiple random access resource sets are 2 random access resource sets.

[0159] As an embodiment, the multiple random access resource sets are more than 2 random access resource sets.

[0160] As an embodiment, the target random access resource set is randomly selected with equal probability from the multiple random access resource sets.

[0161] As an embodiment, the target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution is configurable.

[0162] As an embodiment, the multiple random access resource sets include a first random access resource set and a second random access resource set, the probability of the first random access resource set being selected as the target random access resource set is p, the probability of the second random access resource set being selected as the target random access resource set is 1-p, and p is configurable.

[0163] As an embodiment, the p is configured by RRC signaling.

[0164] As an embodiment, p is equal to 0.5.

[0165] As an embodiment, p is less than 0.5.

[0166] As an embodiment, p is greater than 0.5.

[0167] As an embodiment, the target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

[0168] Example 2

[0169] Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the attached Figure 2 Attached Figure 2The network architecture 200 of the 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system is illustrated. The 5G NR / LTE / LTE-A network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable term. The 5GS / EPS 200 includes at least one of a UE (User Equipment) 201, a RAN (Radio Access Network) 202, a 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, a HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and an Internet service 230. The 5GS / EPS may be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, 5GS / EPS provides packet switching services, but those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit switching services or other cellular networks. RAN includes node 203 and other nodes 204. Node 203 provides user and control plane protocol terminations toward UE 201. Node 203 can be connected to other nodes 204 via an Xn interface (e.g., backhaul) / X2 interface. Node 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (Transmitter Receiver Point, a sending and receiving node), or some other suitable terminology. Node 203 provides an access point to 5GC / EPC 210 for UE 201. Examples of UE 201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop computer, a Personal Digital Assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a drone, an aircraft, a narrowband Internet of Things device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similarly functional device.A person skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term. Node 203 is connected to 5GC / EPC210 via an S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF214, S-GW (Service Gateway) / UPF (UserPlane Function) 212, and P-GW (Packet Date Network Gateway) / UPF213. MME / AMF / SMF211 is a control node that processes signaling between UE201 and 5GC / EPC210. In general, MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW / UPF212, which is itself connected to P-GW / UPF213. P-GW provides UE IP address allocation and other functions. P-GW / UPF213 is connected to Internet Service 230. Internet Service 230 includes operator-corresponding Internet Protocol services, which may specifically include Internet, Intranet, IMS (IP Multimedia Subsystem) and packet switching services.

[0170] As an embodiment, the UE201 corresponds to the first node in the present application.

[0171] As an embodiment, the gNB203 corresponds to the second node in this application.

[0172] As an embodiment, the UE201 corresponds to the first node in the present application, and the gNB203 corresponds to the second node in the present application.

[0173] As an embodiment, the gNB203 is a macrocellular base station.

[0174] As an embodiment, the gNB203 is a micro cell base station.

[0175] As an embodiment, the gNB203 is a picoCell base station.

[0176] As an embodiment, the gNB203 is a home base station (Femtocell).

[0177] As an embodiment, the gNB203 is a base station device that supports large delay difference.

[0178] As an embodiment, the gNB203 is a flying platform device.

[0179] As an embodiment, the gNB203 is a satellite device.

[0180] Example 3

[0181] Embodiment 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in the attached Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3The radio protocol architecture of the control plane 300 for a first communication node device (RSU (Road Side Unit) in a UE, gNB or V2X (Vehicle to Everything), a vehicle-mounted device or a vehicle-mounted communication module) and a second communication node device (RSU in a gNB, UE or V2X, a vehicle-mounted device or a vehicle-mounted communication module), or two UEs is shown with three layers: Layer 1 (Layer 1, L1), Layer 2 (Layer 2, L2) and Layer 3 (Layer 3, L3). L1 is the lowest layer and implements various PHY (physical layer) signal processing functions. L1 will be referred to as PHY301 in this article. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the first communication node device and the second communication node device and the two UEs through PHY301. L2305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets, and provides inter-zone mobility support for the first communication node device between the second communication node device. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception caused by HARQ (Hybrid Automatic Repeat Qequest). The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in L3 in the control plane 300 is responsible for obtaining radio resources (ie, radio bearers) and configuring lower layers using RRC signaling between the second communication node device and the first communication node device.The radio protocol architecture of the user plane 350 includes layer 1 (L1) and layer 2 (L2). The radio protocol architecture for the first communication node device and the second communication node device in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 also includes a SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS (Quality of Service) flows and data radio bearers (DRBs) to support the diversity of services. Although not shown in the figure, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP (Internet Protocol) layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., a remote UE, a server, etc.).

[0182] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0183] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0184] As an embodiment, the first random access preamble code in the present application is generated by the PHY301.

[0185] As an embodiment, the first random access preamble code in the present application is generated by the PHY351.

[0186] As an embodiment, the higher layer in the present application refers to a layer above the physical layer.

[0187] Example 4

[0188] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in the attached figure. Figure 4 shown. Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0189] The first communication device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 and an antenna 420 .

[0190] The second communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454 and an antenna 452.

[0191] In transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 layer. In transmission from the first communication device 410 to the second communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the second communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets and signaling to the second communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate a physical channel carrying a time domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to different antennas 420.

[0192] In the transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any spatial stream with the second communication device 450 as the destination. The symbols on each spatial stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program codes and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

[0193] In the transmission from the second communication device 450 to the first communication device 410, at the second communication device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function at the first communication device 410 described in the transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, and implements L2 layer functions for user plane and control plane. The controller / processor 459 is also responsible for the retransmission of lost packets and signaling to the first communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0194] In the transmission from the second communication device 450 to the first communication device 410, the function at the first communication device 410 is similar to the reception function at the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 storing program codes and data. The memory 476 can be referred to as a computer-readable medium. In the transmission from the second communication device 450 to the first communication device 410, the controller / processor 475 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the UE 450. Upper layer packets from controller / processor 475 may be provided to the core network.

[0195] As an embodiment, the first node in the present application includes the second communication device 450 , and the second node in the present application includes the first communication device 410 .

[0196] As a sub-embodiment of the above embodiment, the first node is a user equipment, and the second node is a relay node.

[0197] As a sub-embodiment of the above embodiment, the first node is a user equipment, and the second node is a base station device.

[0198] As a sub-embodiment of the above embodiment, the first node is a relay node, and the second node is a base station device.

[0199] As an embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The second communication device 450 device at least: sends a first random access preamble; the first random access preamble is randomly selected with medium probability from multiple random access preambles in a target random access resource set; wherein the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution.

[0200] As a sub-embodiment of the above embodiment, the second communication device 450 corresponds to the first node in this application.

[0201] As an embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates actions when executed by at least one processor, and the actions include: sending a first random access preamble code; the first random access preamble code is randomly selected with medium probability from multiple random access preamble codes in a target random access resource set; wherein the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution.

[0202] As a sub-embodiment of the above embodiment, the second communication device 450 corresponds to the first node in this application.

[0203] As an embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The second communication device 450 device at least: uses a first PRACH opportunity to send a random access preamble; the first PRACH opportunity is randomly selected with medium probability from multiple PRACH opportunities in a target random access resource set; wherein the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution.

[0204] As a sub-embodiment of the above embodiment, the second communication device 450 corresponds to the first node in this application.

[0205] As an embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates actions when executed by at least one processor, and the actions include: using a first PRACH opportunity to send a random access preamble code; the first PRACH opportunity is randomly selected with medium probability from multiple PRACH opportunities in a target random access resource set; wherein the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution.

[0206] As a sub-embodiment of the above embodiment, the second communication device 450 corresponds to the first node in this application.

[0207] As an embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The first communication device 410 device at least: receives a first random access preamble; the first random access preamble is randomly selected with medium probability from multiple random access preambles in a target random access resource set; wherein the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution.

[0208] As a sub-embodiment of the above embodiment, the first communication device 410 corresponds to the second node in this application.

[0209] As an embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates actions when executed by at least one processor, and the actions include: receiving a first random access preamble code; the first random access preamble code is randomly selected with medium probability from multiple random access preamble codes in a target random access resource set; wherein the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution.

[0210] As a sub-embodiment of the above embodiment, the first communication device 410 corresponds to the second node in this application.

[0211] As an embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The first communication device 410 device at least: receives a random access preamble in a first PRACH opportunity; the first PRACH opportunity is randomly selected with medium probability from multiple PRACH opportunities in a target random access resource set; wherein the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution.

[0212] As a sub-embodiment of the above embodiment, the first communication device 410 corresponds to the second node in this application.

[0213] As an embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates actions when executed by at least one processor, and the actions include: receiving a random access preamble code in a first PRACH opportunity; the first PRACH opportunity is randomly selected with medium probability from multiple PRACH opportunities in a target random access resource set; wherein the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution.

[0214] As a sub-embodiment of the above embodiment, the first communication device 410 corresponds to the second node in this application.

[0215] As an embodiment, the first node in the present application includes the second communication device 450.

[0216] As an embodiment, the second node in the present application includes the first communication device 410.

[0217] As an embodiment, at least one of {the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller / processor 459, the memory 460, the data source 467} is used to select the first SSB in the present application.

[0218] As an embodiment, at least one of {the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller / processor 459, the memory 460, the data source 467} is used to send the first random access preamble code in the present application.

[0219] As an embodiment, at least one of {the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, the controller / processor 475, and the memory 476} is used to receive the first random access preamble code in the present application.

[0220] Example 5

[0221] Embodiment 5 illustrates a signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 5 As shown in the attached Figure 5 In the embodiment, the first node U1 and the second node U2 communicate with each other through the air interface. Figure 5 , the steps in the dotted box F1 and the steps in the dotted box F2 are optional.

[0222] The first node U1 receives at least multiple SSSs in step S511; selects a first SSB in step S511A; and sends a first random access preamble code in step S512.

[0223] The second node U2 sends multiple SSBs in step S521; and receives the first random access preamble code in step S522.

[0224] In embodiment 5, the first random access preamble is sent using a first PRACH opportunity; the first random access preamble is a random access preamble mapped to the first SSB, and the first PRACH opportunity is a PRACH opportunity to which the first SSB is mapped; the first random access preamble is randomly selected with medium probability from a plurality of random access preambles in a target random access resource set, and the first PRACH opportunity is randomly selected with medium probability from a plurality of PRACH opportunities in the target random access resource set; the target random access resource set is randomly selected from a plurality of random access resource sets according to a probability distribution; the plurality of Each random access resource set in the plurality of random access resource sets includes at least one random access preamble code corresponding to each SSB in a plurality of SSBs, and each random access resource set in the plurality of random access resource sets includes at least one PRACH opportunity corresponding to each SSB in a plurality of SSBs; the plurality of random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0225] As a sub-embodiment of Example 5, the target random access resource set is randomly selected from the multiple random access resource sets with medium probability; or, the target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

[0226] As a sub-embodiment of Embodiment 5, the first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0227] As a sub-embodiment of Embodiment 5, the multiple SSSs respectively belong to the multiple SSBs.

[0228] As a sub-embodiment of Embodiment 5, the first node U1 receives the multiple SSBs.

[0229] As a sub-embodiment of Example 5, the first SSB is one of the multiple SSBs.

[0230] The above-mentioned embodiment 5 and its various sub-embodiments can be combined with each other arbitrarily.

[0231] As an embodiment, a SSS may be used to obtain the corresponding SS-RSRP.

[0232] As an embodiment, the first node U1 is the first node in this application.

[0233] As an embodiment, the second node U2 is the second node in the present application.

[0234] As an embodiment, the first node U1 is a UE.

[0235] As an embodiment, the second node U2 is a base station.

[0236] As an embodiment, the air interface between the second node U2 and the first node U1 is a Uu interface.

[0237] As an embodiment, the air interface between the second node U2 and the first node U1 includes a cellular link.

[0238] As an embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between a base station device and a user equipment.

[0239] As an embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between a satellite device and a user equipment.

[0240] As an embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between a relay device and a user equipment.

[0241] As an embodiment, the steps in the dashed box F1 exist.

[0242] As an embodiment, the steps in the dashed box F1 do not exist.

[0243] As an embodiment, the steps in the dashed box F2 exist.

[0244] As an embodiment, the steps in the dashed box F2 do not exist.

[0245] Example 6

[0246] Embodiment 6 illustrates a schematic diagram illustrating the relationship between the first random access preamble code and the target random access resource set according to an embodiment of the present application, as shown in the attached figure. Figure 6 shown.

[0247] In Example 6, the first random access preamble code is randomly selected with medium probability from a target random access preamble code set in the target random access resource set; wherein the target random access preamble code set includes multiple random access preamble codes, and the random access preamble codes in the target random access preamble code set are all mapped to the same SSB.

[0248] As an embodiment, the target random access resource set includes the target random access preamble code set.

[0249] As an embodiment, the first node selects the first SSB in the present application, and all random access preamble codes in the target random access preamble code set are mapped to the first SSB.

[0250] As an embodiment, the target random access preamble code set is composed of at least part of the random access preamble codes mapped to the first SSB in the target random access resource set.

[0251] As an embodiment, the mapping of the random access preamble code in the target random access preamble code set to the first SSB is determined based on the configuration.

[0252] As an embodiment, the target random access preamble code set is the first random access preamble code set in the present application.

[0253] As an embodiment, the first random access preamble code set in the present application includes random access preamble codes mapped to the first SSB and belonging to random access preamble code group A (RandomAccess Preambles groupA), and random access preamble codes mapped to the first SSB and belonging to random access preamble code group B (RandomAccess Preambles group B); the target random access preamble code set is a subset of the first random access preamble code set.

[0254] As an embodiment, the random access preambles in the target random access preamble set are all mapped to the first SSB and belong to the first random access preamble group (RandomAccess Preambles group), and the first random access preamble group is one of random access preamble group A (RandomAccess Preambles groupA) or random access preamble group B (RandomAccess Preambles group B).

[0255] As an embodiment, the first random access preamble code group is a random access preamble code group selected from random access preamble code group A and random access preamble code group B.

[0256] As an embodiment, if the potential Msg3 size (UL (Uplink) data available for transmission plus MAC subheader, and (if necessary) MAC CE) is greater than ra-Msg3SizeGroupA, and the path loss is less than PCMAX-preambleReceivedTargetPower-msg3-DeltaPreamble-messagePowerOffsetGroupB (of the serving cell performing the random access procedure); or

[0257] If the random access procedure is initiated for the CCCH (Common Control Channel) logical channel, and the CCCH SDU (Service Data Unit) size plus the MAC subheader is greater than ra-Msg3SizeGroupA:

[0258] Then the first random access preamble group is random access preamble group B;

[0259] Otherwise, the first random access preamble group is from random access preamble group A.

[0260] As an embodiment, the Msg3, as part of the random access process, is a message containing C-RNTI MAC CE or CCCH SDU sent on UL-SCH (Uplink Shared Channel(s)), submitted from the upper layer and associated with the UE Contention Resolution Identity.

[0261] As an embodiment, the PCMAX is configurable.

[0262] As an embodiment, the PCMAX is equal to the configured maximum output power (configured maximum output power).

[0263] As an embodiment, the preambleReceivedTargetPower is configurable.

[0264] As an embodiment, the preambleReceivedTargetPower is the initial random access preamble power.

[0265] As an embodiment, the messagePowerOffsetGroupB is configurable.

[0266] As an embodiment, the messagePowerOffsetGroupB is a power offset configured for preamble code selection.

[0267] As an embodiment, the msg3-DeltaPreamble is configurable.

[0268] As an embodiment, the msg3-DeltaPreamble is the power offset between Msg3 and the random access preamble transmission.

[0269] As an embodiment, the ra-Msg3SizeGroupA is configurable.

[0270] As an embodiment, the ra-Msg3SizeGroupA is a threshold for determining a random access preamble group.

[0271] As an embodiment, the first node determines the first random access preamble code group by itself.

[0272] Example 7

[0273] Embodiment 7 illustrates a schematic diagram of random access resources included in a random access resource set among multiple random access resource sets according to an embodiment of the present application, as shown in the attached figure. Figure 7 shown.

[0274] In Embodiment 7, one of the multiple random access resource sets includes multiple random access preamble code sets, and the multiple random access preamble code sets included in the one of the multiple random access resource sets correspond to multiple SSBs respectively.

[0275] As a sub-embodiment of Embodiment 7, the multiple SSBs correspond to different SS / PBCH block indexes respectively.

[0276] As a sub-embodiment of Example 7, the multiple SSBs are configurable.

[0277] As an embodiment, each of the multiple random access resource sets includes multiple random access preamble code sets; for a random access resource set among the multiple random access resource sets, the multiple random access preamble code sets respectively correspond to multiple SSBs.

[0278] As an embodiment, a random access preamble code set in a random access resource set among the multiple random access resource sets includes multiple random access preamble codes.

[0279] As an embodiment, for each random access preamble set in the multiple random access preamble sets in a random access resource set among the multiple random access resource sets, the included random access preambles are mapped to corresponding SSBs.

[0280] As an embodiment, each random access preamble code set in the multiple random access preamble code sets in one random access resource set among the multiple random access resource sets is composed of random access preamble codes mapped to corresponding SSBs in the one random access resource set among the multiple random access resource sets.

[0281] As an embodiment, a random access preamble code mapped to an SSB in a random access resource set among the multiple random access resource sets is determined based on a configuration.

[0282] As an embodiment, when a random access preamble is mapped to an SSB, the SSB corresponds to the random access preamble.

[0283] Example 8

[0284] Embodiment 8 illustrates a schematic diagram illustrating the relationship between the first PRACH opportunity and the target random access resource set according to an embodiment of the present application, as shown in the attached figure. Figure 8 shown.

[0285] In Embodiment 8, the first PRACH opportunity is randomly selected with medium probability from the consecutive PRACH opportunities to which the first SSB in the target random access resource set is mapped.

[0286] As an embodiment, the PRACH opportunity belongs to the random access resource.

[0287] As an embodiment, to determine the first PRACH opportunity, the first node needs to determine the next available PRACH opportunity.

[0288] As an embodiment, the next one refers to: the earliest one.

[0289] As an embodiment, the next available PRACH opportunity is determined from multiple PRACH opportunities to which the first SSB in the target random access resource set is mapped.

[0290] As an embodiment, the next available PRACH opportunity is determined within the constraints of a PRACH mask indicated by physical layer signaling or configured by higher layer signaling.

[0291] As an embodiment, when a PRACH occasion occurs after the UE completes preparation for sending the PRACH, the PRACH occasion is an available PRACH occasion.

[0292] As an embodiment, when the start time of a PRACH opportunity is later than the end time when the UE completes preparation for sending the PRACH, the PRACH opportunity is an available PRACH opportunity.

[0293] As an embodiment, when a PRACH opportunity can be used to perform PRACH transmission, the PRACH opportunity is an available PRACH opportunity.

[0294] As an embodiment, when a valid PRACH opportunity is after the UE completes preparation for sending the PRACH, the PRACH opportunity is an available PRACH opportunity.

[0295] As an embodiment, when the start time of a valid PRACH opportunity is later than the end time when the UE completes the preparation for sending the PRACH, the PRACH opportunity is an available PRACH opportunity.

[0296] As an embodiment, when a valid PRACH opportunity can be used to perform PRACH transmission, the PRACH opportunity is an available PRACH opportunity.

[0297] As an embodiment, the continuous PRACH opportunities to which the first SSB in the target random access resource set is mapped include the next available PRACH opportunity.

[0298] As an embodiment, the earliest PRACH opportunity among the consecutive PRACH opportunities to which the first SSB in the target random access resource set is mapped is no earlier than the next available PRACH opportunity.

[0299] As an embodiment, the continuous PRACH opportunities to which the first SSB in the target random access resource set is mapped are: valid PRACH opportunities to which the first SSB in the target random access resource set is mapped and whose sorting positions are continuous under a first sorting rule; the first sorting rule is as follows:

[0300] First, in increasing order of frequency resource index of frequency reused PRACH opportunities;

[0301] Secondly, in the increasing order of the time resource index of the PRACH opportunities time-division multiplexed within the PRACH time slot;

[0302] Third, in increasing order of the PRACH slot index.

[0303] As an embodiment, the continuous PRACH opportunities to which the first SSB in the target random access resource set is mapped are: valid PRACH opportunities to which the first SSB in the target random access resource set is mapped and whose sorting positions are continuous under a first sorting rule; the first sorting rule is as follows:

[0304] First, in increasing order of preamble index within a single PRACH opportunity;

[0305] Secondly, in ascending order of frequency resource index of frequency reused PRACH opportunities;

[0306] Third, in the increasing order of the time resource index of the PRACH opportunities time-division multiplexed within the PRACH time slot;

[0307] Fourth, in increasing order of the PRACH time slot index.

[0308] As an embodiment, each of the multiple random access resource sets includes multiple PRACH opportunities.

[0309] As an embodiment, the PRACH opportunities included in each of the multiple random access resource sets are all valid PRACH occasions.

[0310] As an embodiment, when a PRACH opportunity is within a UL symbol, the PRACH opportunity is a valid PRACH opportunity.

[0311] As an embodiment, a PRACH opportunity is a valid PRACH opportunity when it is not before the SS / PBCH block in the PRACH time slot and starts at least N symbols later than the last downlink symbol and starts at least N symbols later than the last SS / PBCH block (synchronization signals / physical broadcast channel block) symbol (where N depends on the preamble code SCS (SubCarrier Spacing)).

[0312] As an embodiment, when the preamble code SCS is 1.25kHz or 5kHz, the N is 0; when the preamble code SCS is 15kHz or 30kHz or 60kHz or 120kHz, the N is 2; when the preamble code SCS is 480kHz, the N is 8; when the preamble code SCS is 960kHz, the N is 16.

[0313] As an embodiment, the preamble code SCS is configured by higher layer signaling.

[0314] As an embodiment, an SS / PBCH block symbol is a symbol determined based on the configuration of the SS / PBCH block.

[0315] As an embodiment, one SS / PBCH block symbol is a symbol of an SS / PBCH block having a candidate SS / PBCH block index corresponding to the SS / PBCH block index indicated to the UE by ssb-PositionsInBurst in SIB1 or ssb-PositionsInBurst in ServingCellConfigCommon.

[0316] As an embodiment, an SS / PBCH block symbol is a symbol of an SS / PBCH block having a candidate SS / PBCH block index corresponding to the SS / PBCH block index indicated to the UE by ssb-PositionsInBurst in SIB1, or ssb-PositionsInBurst in ServingCellConfigCommon, or ssb-PositionsInBurst in SSB-MTCAdditionalPCI associated to a physical cell ID with an activated TCI (Transmission Configuration Indicator) state for PDCCH (Physical Downlink Control Channel) or PDSCH.

[0317] As an embodiment, one SS / PBCH block symbol is a symbol corresponding to an SS / PBCH block configured for L1 beam measurement / reporting.

[0318] As an embodiment, the definition of valid PRACH opportunities refers to Section 8.1 of 3GPP TS 38.213.

[0319] As an embodiment, the multiple random access resource sets each correspond to a set of mapping configurations between SSBs and PRACH opportunities.

[0320] Example 9

[0321] Embodiment 9 illustrates a schematic diagram of random access resources included in a random access resource set among multiple random access resource sets according to an embodiment of the present application, as shown in the attached figure. Fig. 9 shown.

[0322] In Embodiment 9, one random access resource set among the multiple random access resource sets includes multiple PRACH opportunities to which each SSB among the multiple SSBs is mapped.

[0323] As a sub-embodiment of Embodiment 9, the multiple SSBs correspond to different SS / PBCH block indexes respectively.

[0324] As a sub-embodiment of Example 9, the multiple SSBs are configurable.

[0325] As an embodiment, an SSB is mapped to multiple PRACH opportunities in one of the multiple random access resource sets based on the configuration.

[0326] As an embodiment, when the SS / PBCH block index corresponding to an SSB is mapped to a PRACH opportunity based on the configuration of RRC signaling, the SSB is mapped to the PRACH opportunity.

[0327] As an embodiment, more than one PRACH opportunities in the target random access resource set are PRACH opportunities to which the first SSB is mapped.

[0328] As an embodiment, the PRACH occasions included in one of the multiple random access resource sets are configurable.

[0329] Example 10

[0330] Embodiment 10 illustrates a schematic diagram of random access resources included in a random access resource set among multiple random access resource sets according to an embodiment of the present application, as shown in the attached figure. Fig.10 shown.

[0331] In embodiment 10, one random access resource set among the multiple random access resource sets includes a random access preamble code set corresponding to each SSB among multiple SSBs and the corresponding multiple PRACH opportunities.

[0332] As a sub-embodiment of embodiment 10, the multiple SSBs correspond to different SS / PBCH block indexes respectively.

[0333] As a sub-embodiment of Embodiment 10, the multiple SSBs are configurable.

[0334] As a sub-embodiment of Embodiment 10, the one random access resource set among the multiple random access resource sets only includes the random access preamble code set corresponding to each SSB among the multiple SSBs and the corresponding multiple PRACH opportunities.

[0335] As a sub-embodiment of Embodiment 10, one of the multiple random access resource sets also includes random access resources other than the random access preamble code set corresponding to each SSB in the multiple SSBs and the corresponding multiple PRACH opportunities.

[0336] Embodiment 11

[0337] Embodiment 11 illustrates a schematic diagram of multiple random access resource sets according to an embodiment of the present application, as shown in the attached figure. Fig.11 shown.

[0338] In embodiment 11, the multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, and the second random access resource set corresponds to a second PRACH configuration index.

[0339] As an embodiment, the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0340] As an embodiment, one RRC parameter indicates the first PRACH configuration index, and another RRC parameter indicates the second PRACH configuration index.

[0341] As an embodiment, the first PRACH configuration index and the second PRACH configuration index are different PRACH configuration indexes (PRACH configuration index).

[0342] As an embodiment, the configuration parameter prach-ConfigurationIndex of the first random access resource set indicates the first PRACH configuration index.

[0343] As an embodiment, the configuration parameter prach-ConfigurationIndex of the second random access resource set indicates the second PRACH configuration index.

[0344] As an embodiment, a PRACH configuration index is mapped to a set of PRACH configurations, and the set of PRACH configurations includes at least part of a preamble format, a subframe number, a starting symbol, a number of PRACH slots within a subframe, a number of time-domain PRACH occasions within a PRACH slot, and a PRACH duration.

[0345] As an embodiment, the mapping relationship between the PRACH configuration index and the PRACH configuration is predefined.

[0346] As an embodiment, the mapping relationship between the PRACH configuration index and the PRACH configuration can be obtained by looking up a table.

[0347] As an embodiment, the mapping relationship between the PRACH configuration index and the PRACH configuration refers to section 6.3.3.2 of 3GPP TS38.211.

[0348] As an embodiment, the PRACH configuration to which the first PRACH configuration index is mapped is used to configure the first random access resource set.

[0349] As an embodiment, the PRACH configuration to which the second PRACH configuration index is mapped is used to configure the second random access resource set.

[0350] Example 12

[0351] Embodiment 12 illustrates a schematic diagram of multiple random access resource sets according to an embodiment of the present application, as shown in the attached figure. Fig.12 shown.

[0352] In embodiment 12, the multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0353] As an embodiment, the first random access resource set also includes PRACH opportunities spanning full-duplex symbols and non-full-duplex symbols.

[0354] As an embodiment, any PRACH opportunity does not span full-duplex symbols and non-full-duplex symbols.

[0355] As an embodiment, the first random access resource set does not include PRACH opportunities in non-full-duplex symbols, and the second random access resource set does not include PRACH opportunities in full-duplex symbols.

[0356] As an embodiment, when a PRACH opportunity occupies only a full-duplex symbol in the time domain, this PRACH opportunity is a PRACH opportunity in the full-duplex symbol.

[0357] As an embodiment, when a PRACH opportunity is included in one or more full-duplex symbols in the time domain, the PRACH opportunity is a PRACH opportunity in the full-duplex symbol.

[0358] As an embodiment, when a PRACH opportunity occupies only non-full-duplex symbols in the time domain, this PRACH opportunity is a PRACH opportunity in the non-full-duplex symbol.

[0359] As an embodiment, when a PRACH opportunity is included in one or more non-full-duplex symbols in the time domain, the PRACH opportunity is a PRACH opportunity in the non-full-duplex symbol.

[0360] As an embodiment, the first random access resource set may be additionally configured based on the second random access resource set.

[0361] As an embodiment, a symbol in the present application is an OFDM (Orthogonal Frequency Division Multiplex) symbol.

[0362] As an embodiment, a symbol in the present application is a symbol in a slot.

[0363] As an embodiment, a symbol in the present application is a symbol defined in the time domain.

[0364] As an embodiment, a PRACH opportunity is in a full-duplex symbol or in a non-full-duplex symbol, which is viewed from the time domain.

[0365] As an embodiment, there is no symbol that is both a full-duplex symbol and a non-full-duplex symbol.

[0366] As an embodiment, when a symbol is indicated as downlink by uplink / downlink TDD configuration signaling and can be used for uplink transmission, the symbol is a full-duplex symbol.

[0367] As an embodiment, the benefits of the above method include: it is beneficial to improve the uplink capacity.

[0368] As an embodiment, when a symbol is not a full-duplex symbol, the symbol is a non-full-duplex symbol.

[0369] As an embodiment, when a symbol is indicated as uplink by uplink / downlink TDD configuration signaling, the symbol is a non-full-duplex symbol.

[0370] As an embodiment, when a symbol is configured to be usable for full-duplex operation, the symbol is a full-duplex symbol; when a symbol is configured not to be used for full-duplex operation, the symbol is a non-full-duplex symbol.

[0371] As an embodiment, when a symbol is configured to be available for full-duplex operation, the symbol is a full-duplex symbol; when a symbol is not configured to be available for full-duplex operation, the symbol is a non-full-duplex symbol.

[0372] As an embodiment, the symbols used for the SubBand non-overlapping Full Duplex (SBFD) operation are full-duplex symbols, not non-full-duplex symbols.

[0373] As an embodiment, the symbols not used for SBFD operation are non-full-duplex symbols, not full-duplex symbols.

[0374] As an embodiment, SBFD symbols are full-duplex symbols, and non-SBFD symbols are non-full-duplex symbols.

[0375] As an embodiment, symbols in a full-duplex time slot are all full-duplex symbols.

[0376] As an embodiment, symbols in a non-full-duplex time slot are all non-full-duplex symbols.

[0377] As an embodiment, when a symbol is indicated as downlink by uplink and downlink TDD configuration signaling and can be used for uplink transmission, the symbol is a full-duplex symbol; when a symbol is indicated as uplink by uplink and downlink TDD configuration signaling, the symbol is a non-full-duplex symbol.

[0378] As an embodiment, the symbols indicated as downlink by the uplink / downlink TDD configuration signaling and available for uplink transmission are full-duplex symbols.

[0379] As an embodiment, the above method is beneficial to improving resource utilization efficiency on symbols indicated as downlink by the uplink and downlink TDD configuration signaling and available for uplink transmission.

[0380] As an embodiment, whether a flexible symbol is a full-duplex symbol is configurable.

[0381] As an embodiment, whether a flexible symbol is a full-duplex symbol is configured by RRC signaling.

[0382] As an embodiment, there is one flexible symbol configured as a full-duplex symbol.

[0383] As an embodiment, a symbol indicated as downlink by the uplink / downlink TDD configuration signaling and available for uplink transmission is indicated as downlink by the uplink / downlink TDD configuration signaling, and this symbol can be used for uplink transmission.

[0384] As an embodiment, there is at least one symbol indicated as a downlink symbol by the uplink / downlink TDD configuration signaling that is not a full-duplex symbol.

[0385] As an embodiment, whether a symbol indicated as a downlink symbol by the uplink / downlink TDD configuration signaling is a full-duplex symbol is configurable.

[0386] As an embodiment, whether a symbol of the downlink indicated by the uplink and downlink TDD configuration signaling is a full-duplex symbol is configured by RRC signaling.

[0387] As an embodiment, the symbols indicated as downlink symbols by the uplink / downlink TDD configuration signaling and unavailable for uplink transmission are not full-duplex symbols.

[0388] As an embodiment, the symbols indicated as downlink by the uplink / downlink TDD configuration signaling and available for uplink transmission are full-duplex symbols; the symbols indicated as downlink by the uplink / downlink TDD configuration signaling and unavailable for uplink transmission are non-full-duplex symbols.

[0389] As an embodiment, symbols indicated as uplink by the uplink / downlink TDD configuration signaling are not available for downlink transmission.

[0390] As an embodiment, the data available for uplink transmission includes: at least available for PRACH transmission (transmission(s)).

[0391] As an embodiment, the above method is beneficial to increasing random access capacity.

[0392] As an embodiment, the signal that can be used for uplink transmission includes: at least can be used for PUCCH (Physical Uplink Control CHannel, physical uplink control channel) transmission (transmission(s)).

[0393] As an embodiment, the frequency band available for uplink transmission includes: available for transmitting PUCCH on at least part of the frequency band.

[0394] As an embodiment, the above method is beneficial to increase system resources used for UCI transmission.

[0395] As an embodiment, the signal that can be used for uplink transmission includes: at least can be used for PUSCH (Physical Uplink Shared CHannel, physical uplink shared channel) transmission (transmission(s)).

[0396] As an embodiment, the above method is helpful to improve the uplink capacity of the system.

[0397] As an embodiment, the data that can be used for uplink transmission includes: at least can be used for PUSCH and PUCCH transmission (transmission(s)).

[0398] As an embodiment, the data that can be used for uplink transmission includes: at least can be used for PUSCH and PRACH transmission (transmission(s)).

[0399] As an embodiment, the data that can be used for uplink transmission includes: at least can be used for PUCCH and PRACH transmission (transmission(s)).

[0400] As an embodiment, the data that can be used for uplink transmission includes: at least can be used for PUSCH transmission, PUCCH transmission and PRACH transmission (transmission(s)).

[0401] As an embodiment, the signal that can be used for uplink transmission includes: at least one of PUSCH transmission, PUCCH transmission, PRACH (Physical Random Access CHannel) transmission (transmission(s)) and SRS (Sounding Reference Signal) transmission (transmission(s)).

[0402] As an embodiment, the frequency band available for uplink transmission includes: available for at least one of PUSCH transmission, PUCCH transmission, PRACH transmission and SRS transmission on at least part of the frequency band.

[0403] As an embodiment, the signal that can be used for uplink transmission includes: signal that can be used for UL-SCH (Uplink Shared Channel(s)) transmission.

[0404] As an embodiment, the uplink / downlink TDD (Time Division Duplex) configuration signaling is a signaling indicating the link direction of the symbol.

[0405] As an embodiment, the uplink and downlink TDD configuration signaling indicates at least one symbol as a downlink.

[0406] As an embodiment, the uplink and downlink TDD configuration signaling indicates at least one symbol as uplink.

[0407] As an embodiment, the uplink and downlink TDD configuration signaling is RRC signaling.

[0408] As an embodiment, the benefits of the above method include: high reliability of signaling transmission.

[0409] As an embodiment, the uplink and downlink TDD configuration signaling is tdd-UL-DL-ConfigurationCommon.

[0410] As an embodiment, the benefits of the above method include: the uplink and downlink TDD configuration signaling can be applicable to multiple users, which is conducive to reducing control signaling overhead.

[0411] As an embodiment, the uplink and downlink TDD configuration signaling is tdd-UL-DL-ConfigurationDedicated.

[0412] As an embodiment, the uplink and downlink TDD configuration signaling includes tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated.

[0413] As an embodiment, the uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

[0414] As an embodiment, the uplink and downlink TDD configuration signaling includes tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

[0415] As an embodiment, when a symbol is indicated as uplink / downlink by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated, the symbol is a symbol indicated as uplink / downlink by the uplink / downlink TDD configuration signaling.

[0416] Example 13

[0417] Embodiment 13 illustrates a schematic diagram of a first probability distribution according to an embodiment of the present application, as shown in the attached figure. Fig.13 shown.

[0418] In embodiment 13, the target random access resource set is randomly selected from Q random access resource sets (including random access resource set #1, random access resource set #2, ..., random access resource set #Q) according to a first probability distribution, where Q is a positive integer greater than 1; in the first probability distribution, the probability of random access resource set #j being selected is r j , the j is any positive integer not greater than the Q.

[0419] As an embodiment, the Q random access resource sets are the multiple random access resource sets in the present application.

[0420] As an embodiment, Q is equal to 2.

[0421] As an embodiment, the Q is equal to 2, the first random access resource set in the present application is the random access resource set #1, and the second random access resource set in the present application is the random access resource set #2.

[0422] As an embodiment, the Q is configurable.

[0423] As an embodiment, the Q may be greater than 2.

[0424] As an embodiment, the first probability distribution depends on the configuration of the multiple random access resource sets.

[0425] As an embodiment, the first probability distribution depends on the configuration of PRACH opportunities in the multiple random access resource sets.

[0426] As an embodiment, the first probability distribution depends on the configuration of the random access preamble codes in the multiple random access resource sets.

[0427] As an example, for any j, the corresponding r j Equal to M j / (M1+M2+...+M Q ), where M i is the number of PRACH opportunities in random access resource set #i, where i is any positive integer not greater than Q.

[0428] As an example, for any j, the corresponding r j Equal to M j / (M1+M2+...+M Q ), where M iIt is the number of PRACH opportunities in an association pattern period (association pattern period) corresponding to the random access resource set #i, and the i is any positive integer not greater than the Q.

[0429] As an example, for any j, the corresponding r j Equal to M j / (M1+M2+...+M Q ), where M i is the number of PRACH opportunities in random access resource set #i within the first duration, where i is any positive integer not greater than Q.

[0430] As an example, for any j, the corresponding r j Equal to T j / (T1+T2+...+T Q ), where T i It is the product of the number of PRACH opportunities in random access resource set #i and the number of random access preamble codes mapped to each PRACH opportunity in random access resource set #i, where i is any positive integer not greater than Q.

[0431] As an example, for any j, the corresponding r j Equal to T j / (T1+T2+...+T Q ), where T i It is the product of the number of PRACH opportunities in an association pattern period (association pattern period) corresponding to the random access resource set #i and the number of random access preamble codes mapped to each PRACH opportunity in the random access resource set #i, where i is any positive integer not greater than Q.

[0432] As an example, for any j, the corresponding r j Equal to T j / (T1+T2+...+T Q ), where T i It is the product of the number of PRACH opportunities in the random access resource set #i within the first duration and the number of random access preamble codes mapped to each PRACH opportunity in the random access resource set #i, where i is any positive integer not greater than Q.

[0433] As an embodiment, the given duration is configurable.

[0434] As an embodiment, the given duration is 160ms.

[0435] Embodiment 14

[0436] Embodiment 14 illustrates a structural block diagram of a processing device used in a first node according to an embodiment of the present application; Fig.14 As shown in the attached Fig.14 In the embodiment, the processing device A00 in the first node includes a first receiver A01 and a first transmitter A02.

[0437] As an embodiment, the first node is user equipment.

[0438] As an embodiment, the first node is a relay node.

[0439] As an embodiment, the first node is a vehicle-mounted communication device.

[0440] As an embodiment, the first node is a user equipment capable of sensing SBFD.

[0441] As an embodiment, the first node is a user equipment supporting SBFD operation.

[0442] As an embodiment, the first node is a user equipment that supports configuration of full-duplex symbols and non-full-duplex symbols.

[0443] As an embodiment, the first node is a user equipment supporting network energy-saving operations.

[0444] As an embodiment, the first receiver A01 includes the attached Figure 4 At least one of the antenna 452, receiver 454, multi-antenna reception processor 458, reception processor 456, controller / processor 459, memory 460 and data source 467.

[0445] As an embodiment, the first receiver A01 includes the attached Figure 4 At least the first five of the antenna 452, receiver 454, multi-antenna receive processor 458, receive processor 456, controller / processor 459, memory 460 and data source 467.

[0446] As an embodiment, the first receiver A01 includes the attached Figure 4 At least the first four of the antenna 452, receiver 454, multi-antenna receive processor 458, receive processor 456, controller / processor 459, memory 460 and data source 467.

[0447] As an embodiment, the first receiver A01 includes the attached Figure 4At least the first three of the antenna 452, receiver 454, multi-antenna receive processor 458, receive processor 456, controller / processor 459, memory 460 and data source 467.

[0448] As an embodiment, the first receiver A01 includes the attached Figure 4 At least the first two of the antenna 452, receiver 454, multi-antenna receive processor 458, receive processor 456, controller / processor 459, memory 460 and data source 467.

[0449] As an embodiment, the first transmitter A02 includes the attached Figure 4 At least one of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0450] As an embodiment, the first transmitter A02 includes the attached Figure 4 At least the first five of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0451] As an embodiment, the first transmitter A02 includes the attached Figure 4 At least the first four of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0452] As an embodiment, the first transmitter A02 includes the attached Figure 4 At least the first three of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0453] As an embodiment, the first transmitter A02 includes the attached Figure 4 At least the first two of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0454] As an embodiment, the first transmitter A02 sends a first random access preamble code; the first random access preamble code is randomly selected with medium probability from multiple random access preamble codes in the target random access resource set;

[0455] The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution.

[0456] As an embodiment, the first transmitter A02 uses a first PRACH opportunity to send the first random access preamble code; the first PRACH opportunity is randomly selected with medium probability from multiple PRACH opportunities in the target random access resource set.

[0457] As an embodiment, the first transmitter A02 selects a first SSB;

[0458] The first random access preamble is a random access preamble mapped to the first SSB, and the first PRACH opportunity is a PRACH opportunity to which the first SSB is mapped.

[0459] As an embodiment, each of the multiple random access resource sets includes at least one random access preamble code corresponding to each SSB in multiple SSBs.

[0460] As an embodiment, the multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0461] As an embodiment, the first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0462] As an embodiment, the target random access resource set is randomly selected with equal probability from the multiple random access resource sets.

[0463] As an embodiment, the target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

[0464] As an embodiment, the first receiver A01 receives at least multiple SSSs; the multiple SSSs are used to obtain SS-RSRP.

[0465] As an embodiment, the first transmitter A02 uses a first PRACH opportunity to send a random access preamble; the first PRACH opportunity is randomly selected with medium probability from multiple PRACH opportunities in a target random access resource set;

[0466] The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution.

[0467] As an embodiment, the first transmitter A02 uses the first PRACH opportunity to send a first random access preamble code; the first random access preamble code is randomly selected with medium probability from multiple random access preamble codes in the target random access resource set.

[0468] As an embodiment, each of the multiple random access resource sets includes at least one PRACH opportunity corresponding to each SSB in the multiple SSBs.

[0469] As an embodiment, the first transmitter A02 sends a first random access preamble code; the first random access preamble code is randomly selected with medium probability from multiple random access preamble codes in a target random access resource set; the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution; each random access resource set in the multiple random access resource sets includes at least one random access preamble code corresponding to each SSB in multiple SSBs.

[0470] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected with medium probability from the multiple random access resource sets.

[0471] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

[0472] As a sub-embodiment of the above embodiment, the multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0473] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected with medium probability from the multiple random access resource sets; the multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0474] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected with medium probability from the multiple random access resource sets; the first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0475] As an embodiment, the first transmitter A02 uses a first PRACH opportunity to send a random access preamble code; the first PRACH opportunity is randomly selected with medium probability from multiple PRACH opportunities in a target random access resource set; the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution; each random access resource set in the multiple random access resource sets includes at least one PRACH opportunity corresponding to each SSB in multiple SSBs.

[0476] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected with medium probability from the multiple random access resource sets.

[0477] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

[0478] As a sub-embodiment of the above embodiment, the multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0479] As a sub-embodiment of the above embodiment, the first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0480] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected with medium probability from the multiple random access resource sets; the multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0481] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected with medium probability from the multiple random access resource sets; the first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0482] As an embodiment, the first transmitter A02 uses a first PRACH opportunity to send a first random access preamble code; the first random access preamble code is randomly selected with medium probability from multiple random access preamble codes in a target random access resource set, and the first PRACH opportunity is randomly selected with medium probability from multiple PRACH opportunities in the target random access resource set; the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution; each random access resource set in the multiple random access resource sets includes at least one random access preamble code corresponding to each SSB in multiple SSBs.

[0483] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected with medium probability from the multiple random access resource sets.

[0484] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

[0485] As a sub-embodiment of the above embodiment, the multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0486] As a sub-embodiment of the above embodiment, the first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0487] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected with medium probability from the multiple random access resource sets; the multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0488] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected with medium probability from the multiple random access resource sets; the first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0489] As an embodiment, the first transmitter A02 selects a first SSB and uses a first PRACH opportunity to send a first random access preamble; the first random access preamble is a random access preamble mapped to the first SSB, and the first PRACH opportunity is the PRACH opportunity to which the first SSB is mapped; the first random access preamble is randomly selected with medium probability from multiple random access preambles in a target random access resource set, and the first PRACH opportunity is randomly selected with medium probability from multiple PRACH opportunities in the target random access resource set; the target random access resource set is randomly selected from multiple random access resource sets according to a probability distribution; each of the multiple random access resource sets includes at least one random access preamble corresponding to each SSB in a plurality of SSBs, and each of the multiple random access resource sets includes at least one PRACH opportunity corresponding to each SSB in a plurality of SSBs.

[0490] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected with medium probability from the multiple random access resource sets.

[0491] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

[0492] As a sub-embodiment of the above embodiment, the multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0493] As a sub-embodiment of the above embodiment, the first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0494] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected with medium probability from the multiple random access resource sets; the multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0495] As a sub-embodiment of the above embodiment, the target random access resource set is randomly selected with medium probability from the multiple random access resource sets; the first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0496] Embodiment 15

[0497] Embodiment 15 illustrates a structural block diagram of a processing device used in a second node according to an embodiment of the present application; Fig.15 As shown in the attached Fig.15 In the embodiment, the processing device B00 in the second node includes a second transmitter B01 and a second receiver B02.

[0498] As an embodiment, the second node is a base station.

[0499] As an embodiment, the second node is a satellite device.

[0500] As an embodiment, the second node is a relay node.

[0501] As an embodiment, the second node is one of a test device, a test equipment, and a test instrument.

[0502] As an embodiment, the second transmitter B01 includes the attached Figure 4 At least one of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476.

[0503] As an embodiment, the second transmitter B01 includes the attached Figure 4 At least the first five of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476.

[0504] As an embodiment, the second transmitter B01 includes the attached Figure 4 At least the first four of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476.

[0505] As an embodiment, the second transmitter B01 includes the attached Figure 4 At least the first three of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476.

[0506] As an embodiment, the second transmitter B01 includes the attached Figure 4 At least the first two of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476.

[0507] As an embodiment, the second receiver B02 includes the attached Figure 4 At least one of the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller / processor 475 and the memory 476.

[0508] As an embodiment, the second receiver B02 includes the attached Figure 4 At least the first five of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller / processor 475 and the memory 476.

[0509] As an embodiment, the second receiver B02 includes the attached Figure 4 At least the first four of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller / processor 475 and the memory 476.

[0510] As an embodiment, the second receiver B02 includes the attached Figure 4At least the first three of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller / processor 475 and the memory 476.

[0511] As an embodiment, the second receiver B02 includes the attached Figure 4 At least the first two of the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller / processor 475 and the memory 476.

[0512] As an embodiment, the second receiver B02 receives a first random access preamble code; the first random access preamble code is randomly selected with medium probability from multiple random access preamble codes in the target random access resource set;

[0513] The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution.

[0514] As an embodiment, the second receiver B02 receives the first random access preamble code in a first PRACH opportunity; the first PRACH opportunity is randomly selected with medium probability from multiple PRACH opportunities in the target random access resource set.

[0515] As an embodiment, the first random access preamble code is a random access preamble code mapped to a first SSB, and the first PRACH opportunity is a PRACH opportunity to which the first SSB is mapped.

[0516] As an embodiment, each of the multiple random access resource sets includes at least one random access preamble code corresponding to each SSB in multiple SSBs.

[0517] As an embodiment, the multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

[0518] As an embodiment, the first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

[0519] As an embodiment, the target random access resource set is randomly selected with equal probability from the multiple random access resource sets.

[0520] As an embodiment, the target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

[0521] As an embodiment, the second transmitter B01 sends multiple SSBs; the first SSB is one of the multiple SSBs.

[0522] As an embodiment, the second receiver B02 receives a random access preamble in a first PRACH opportunity; the first PRACH opportunity is randomly selected with medium probability from a plurality of PRACH opportunities in a target random access resource set;

[0523] The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution.

[0524] As an embodiment, the second receiver B02 receives a first random access preamble code in the first PRACH opportunity; the first random access preamble code is randomly selected with medium probability from multiple random access preamble codes in the target random access resource set.

[0525] As an embodiment, each of the multiple random access resource sets includes at least one PRACH opportunity corresponding to each SSB in the multiple SSBs.

[0526] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of software and hardware combination. The user equipment, terminal and UE in the present application include but are not limited to drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment, transportation tools, vehicles, RSUs, wireless sensors, Internet cards, Internet of Things terminals, RFID (Radio Frequency Identification, Radio Frequency Identification Technology) terminals, NB-IoT (Narrow Band Internet of Things, Narrow Band Internet of Things) terminals, MTC (Machine Type Communication, Machine Type Communication) terminals, eMTC (enhanced MTC, enhanced MTC) terminals, data cards, Internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base stations or system equipment in this application include but are not limited to macrocell base stations, microcell base stations, small cell base stations, home base stations, relay base stations, eNB (evolved Node B), gNB, TRP, GNSS (Global Navigation Satellite System), relay satellites, satellite base stations, aerial base stations, RSU, drones, test equipment, such as transceivers that simulate some functions of base stations or signaling testers and other wireless communication equipment.

[0527] It should be understood by those skilled in the art that the present invention may be implemented in other specified forms without departing from its core or essential features. Therefore, the embodiments disclosed herein should be considered illustrative rather than restrictive in any way. The scope of the invention is determined by the appended claims rather than the preceding description, and all modifications within their equivalent meanings and regions are considered to be included therein.

Claims

1. A method for a terminal, characterized in that: include: Sending a first random access preamble; the first random access preamble is randomly selected with medium probability from a plurality of random access preambles in a target random access resource set; The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution.

2. The method according to claim 1, characterized in that The first random access preamble is sent using a first PRACH opportunity; the first PRACH opportunity is randomly selected with medium probability from a plurality of PRACH opportunities in the target random access resource set.

3. The method according to claim 2, characterized in that include: Select the first SSB; The first random access preamble is a random access preamble mapped to the first SSB, and the first PRACH opportunity is a PRACH opportunity to which the first SSB is mapped.

4. The method according to any one of claims 1 to 3, characterized in that Each of the multiple random access resource sets includes at least one random access preamble code corresponding to each SSB in the multiple SSBs.

5. The method according to any one of claims 1 to 4, characterized in that The multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

6. The method according to claim 5, characterized in that The first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

7. The method according to any one of claims 1 to 6, characterized in that The target random access resource set is randomly selected with equal probability from the multiple random access resource sets.

8. The method according to any one of claims 1 to 6, characterized in that The target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

9. A terminal, characterized in that: The terminal includes: one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program codes, where the computer program codes include computer instructions. The one or more processors call the computer instructions to enable the terminal to execute the method according to any one of claims 1 to 8.

10. A method for a base station, characterized in that: include: Receiving a first random access preamble; the first random access preamble is randomly selected with medium probability from a plurality of random access preambles in a target random access resource set; The target random access resource set is randomly selected from multiple random access resource sets according to probability distribution.

11. The method according to claim 10, characterized in that The first random access preamble is received in a first PRACH opportunity; the first PRACH opportunity is randomly selected with medium probability from a plurality of PRACH opportunities in the target random access resource set.

12. The method according to claim 11, characterized in that The first random access preamble is a random access preamble mapped to a first SSB, and the first PRACH opportunity is a PRACH opportunity to which the first SSB is mapped.

13. The method according to any one of claims 10 to 12, characterized in that Each of the multiple random access resource sets includes at least one random access preamble code corresponding to each SSB in the multiple SSBs.

14. The method according to any one of claims 10 to 13, characterized in that The multiple random access resource sets include a first random access resource set and a second random access resource set, the first random access resource set corresponds to a first PRACH configuration index, the second random access resource set corresponds to a second PRACH configuration index, and the first PRACH configuration index and the second PRACH configuration index are configured separately.

15. The method according to claim 14, characterized in that The first random access resource set includes PRACH opportunities in full-duplex symbols, and the second random access resource set includes PRACH opportunities in non-full-duplex symbols.

16. The method according to any one of claims 10 to 15, characterized in that The target random access resource set is randomly selected with equal probability from the multiple random access resource sets.

17. The method according to any one of claims 10 to 15, characterized in that The target random access resource set is randomly selected from the multiple random access resource sets according to a first probability distribution, and the first probability distribution depends on the configuration of the multiple random access resource sets.

18. A base station, characterized in that: The base station includes: one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program codes, where the computer program codes include computer instructions, and the one or more processors call the computer instructions to enable the base station to perform the method according to any one of claims 10 to 17.

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