CN114257274A

CN114257274A - Method and apparatus in a node used for wireless communication

Info

Publication number: CN114257274A
Application number: CN202010993570.0A
Authority: CN
Inventors: 蒋琦; 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2022-03-29
Anticipated expiration: 2040-09-21
Also published as: CN114257274B; CN116015373A

Abstract

A method and apparatus in a node used for wireless communication is disclosed. Firstly, a node sends a first characteristic sequence and a target signal; subsequently monitoring the first signaling in a first time window; demodulating the first signal when the first signaling is detected; the channel occupied by the first characteristic sequence comprises a random access related channel; the target signal comprises a first identification, the first signal comprises the first identification and a second identification, and CRC check included in the first signaling is scrambled by a third identification; the first signaling indicates the first signal; the target signal is used to trigger the first signal; the first identifier and the second identifier are respectively a C-RNTI, and the third identifier is different from the first identifier; the first time window is related to a time domain resource occupied by the target signal. The method and the device for optimizing the physical layer mobility management under the beamforming are used for improving the positioning performance.

Description

Method and apparatus in a node used for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission scheme and apparatus of a wireless signal for cell handover in wireless communication.

Background

In LTE systems, inter-cell Handover (Handover) is controlled by the base station based on UE (User Equipment) measurements. The mechanism in LTE is basically followed for inter-cell handover in 3GPP (3rd Generation Partner Project) R (Release) 15. In NR (New Radio) systems, more application scenarios need to be supported, and some application scenarios, such as URLLC (Ultra-Reliable and Low Latency Communications), place high demands on Latency, and also place New challenges on inter-cell handover.

In the NR system, large-scale (Massive) MIMO (Multiple Input Multiple Output) is an important technical feature. In large-scale MIMO, multiple antennas form a narrow beam pointing to a specific direction by beamforming to improve communication quality. The beams formed by multi-antenna beamforming are generally narrow, and the beams of both communication parties need to be aligned for effective communication.

Disclosure of Invention

The inventors have found through research that beam-based communication can negatively affect inter-cell handover, such as additional delay and ping-pong effects. How to reduce these negative effects, improve the terminal switching speed, and further improve the performance of the cell border users to meet the requirements of various application scenarios is a problem to be solved.

In view of the above, the present application discloses a solution. It should be noted that although the above description uses the large-scale MIMO and beam-based communication scenarios as examples, the present application is also applicable to other scenarios such as LTE multi-antenna systems and achieves similar technical effects as in the large-scale MIMO and beam-based communication scenarios. Furthermore, the adoption of a unified solution for different scenarios (including but not limited to large scale MIMO, beam-based communication and LTE multi-antenna systems) also helps to reduce hardware complexity and cost. Without conflict, embodiments and features of embodiments in any node of the present application may be applied to any other node and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

In response to the above problems, the present application discloses a method and apparatus for inter-cell handover and mobility management of layer 1/2. It should be noted that, without conflict, the embodiments and features in the embodiments in the user equipment of the present application may be applied to the base station, and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict. Further, although the purpose of the present application is for cellular networks, the present application can also be used for internet of things and car networking. Further, although the present application was originally directed to multi-carrier communication, the present application can also be applied to single-carrier communication. Further, although the present application was originally directed to multi-antenna communication, the present application can also be applied to single-antenna communication. Further, although the original intention of the present application is directed to the terminal and base station scenario, the present application is also applicable to the terminal and terminal, terminal and relay, and relay and base station communication scenarios, and achieves similar technical effects in the terminal and base station scenario. Furthermore, the adoption of a unified solution for different scenarios (including but not limited to the communication scenario of the terminal and the base station) also helps to reduce hardware complexity and cost.

Further, without conflict, embodiments and features of embodiments in a first node device of the present application may apply to a second node device and vice versa. In particular, the terms (telematics), nouns, functions, variables in the present application may be explained (if not specifically stated) with reference to the definitions in the 3GPP specification protocol TS (technical specification)36 series, TS38 series, TS37 series.

The application discloses a method in a first node for wireless communication, comprising:

transmitting the first characteristic sequence and a target signal;

monitoring for first signaling in a first time window; demodulating the first signal when the first signaling is detected;

wherein the channel occupied by the first signature sequence comprises a random access related channel, and the transmission timing of the target signal is related to the transmission timing of the first signature sequence; the target signal comprises a first identification, the first signal comprises the first identification and a second identification, and CRC (Cyclic Redundancy Check) included in the first signaling is scrambled by a third identification; the first signaling comprises configuration information of the first signal, wherein the configuration information comprises a time-frequency resource set occupied by the first signal; the target signal is used to trigger the first signal; the first identity is a C-RNTI (Cell-Radio Network Temporary identity), the second identity is a C-RNTI, and the third identity is an RNTI (Radio Network Temporary identity) different from the first identity; the first time window is related to a time domain resource occupied by the target signal.

As an embodiment, one technical feature of the above method is that: when triggering the switching caused by BLF (Beam Link Failure), the first node can directly initiate random access to the target cell to be switched to in order to improve the switching speed and avoid the interaction of layer three, thereby avoiding triggering measurement report and triggering the subsequent interaction between the current service cell and the target cell and improving the switching efficiency and speed.

As an embodiment, another technical feature of the above method is: because the first node does not establish RRC (Radio Resource Control) connection with the target cell, the first node recommends a beam to the target cell in a random access manner and sends the C-RNTI allocated to the original cell by the first node, that is, the first identifier, to the target cell; and the target cell feeds back the C-RNTI allocated by the original cell to the first node through the first signal so as to inform the first node that the target signal is correctly received by the target cell.

As an embodiment, another technical feature of the above method is: and when the target cell sends the C-RNTI allocated by the original cell, the target cell also sends the C-RNTI newly allocated by the target cell, namely the second identifier to the first node to complete the switching.

According to an aspect of the application, the first signature sequence and the target signal belong to the same MSGA (message a) message, and the third identity is an MSGB-RNTI (message B-radio network temporary identity).

As an embodiment, one technical feature of the above method is that: can be used in a two-step random access procedure.

According to one aspect of the application, comprising:

receiving a third signal after the first signature sequence is transmitted and before the target signal is transmitted;

wherein the first signature sequence is used to trigger the third signal, the third signal being indicative of the third identity.

According to an aspect of the application, the first identity is configured by a first cell, the second identity and the third identity are configured by a second cell, the first cell and the second cell being different; a first air interface resource is used for determining a first reference signal resource, and the first air interface resource comprises at least one of a time domain resource occupied by the first characteristic sequence, a frequency domain resource occupied by the first characteristic sequence and a preamble index; or, the target signal comprises a first information unit, the first information unit in the target signal is used to indicate a first reference signal resource; the first reference signal resource is maintained by the second cell.

According to one aspect of the application, comprising:

receiving a first information block, the first information block being used to indicate M1 candidate reference signal resources;

selecting the first reference signal resource from the M1 candidate reference signal resources;

wherein the first reference signal resource is one of the M1 candidate reference signal resources; the sender of the first information block is the first cell; the M1 is a positive integer greater than 1.

As an embodiment, one technical feature of the above method is that: the M1 candidate reference signal resources respectively correspond to M1 beams maintained by a target cell, and a current serving cell forwards the first information block to notify a beam configuration of a target cell adjacent to the first node, so that the first node detects and reports beams of the adjacent target cell as candidate beams, thereby ensuring smooth completion of layer 1/2 handover.

According to one aspect of the application, comprising:

receiving a second information block, the second information block indicating a target set of reference signal resources;

measuring a target reference signal resource group, wherein the channel quality of all reference signal resources in the target reference signal resource group is lower than a first threshold value, and a first counter is increased by 1;

wherein the target reference signal resource group includes at least one reference signal resource, the first counter reaches a first trigger value, and the first signature sequence is triggered to be transmitted.

As an embodiment, one technical feature of the above method is that: the reference signal resources corresponding to the target reference signal resource group are a plurality of beams maintained by the original serving cell, and the first node starts the cardinality only when the channel qualities of all beams maintained by the original serving cell are poor over the first threshold, and initiates the switching of the layer 1/2 when the count satisfies a certain condition.

According to an aspect of the application, the behavior demodulating the first signal includes attempting to recover a first MAC (Medium Access Control) PDU (Protocol Data Unit), the first MAC PDU including the first identifier and the second identifier; and only when the first MAC PDU is recovered, judging that the random access process to which the first characteristic sequence belongs is successful.

The application discloses a method in a second node for wireless communication, comprising:

receiving a first signature sequence and a target signal;

transmitting first signaling in a first time window; and transmitting the first signal;

wherein the channel occupied by the first signature sequence comprises a random access related channel, and the transmission timing of the target signal is related to the transmission timing of the first signature sequence; the target signal comprises a first identification, the first signal comprises the first identification and a second identification, and CRC included in the first signaling is scrambled by a third identification; the first signaling comprises configuration information of the first signal, wherein the configuration information comprises a time-frequency resource set occupied by the first signal; the target signal is used to trigger the first signal; the first identity is a C-RNTI, the second identity is a C-RNTI and the third identity is an RNTI different from the first identity; the first time window is related to a time domain resource occupied by the target signal.

According to an aspect of the application, the first signature sequence and the target signal belong to the same MSGA message, and the third identifier is an MSGB-RNTI.

According to one aspect of the application, comprising:

transmitting a third signal after the first signature sequence is received and before the target signal is received;

According to one aspect of the application, comprising:

transmitting a first information block, the first information block being used to indicate M1 candidate reference signal resources;

According to one aspect of the application, comprising:

transmitting a second information block indicating a target set of reference signal resources;

wherein a sender of the first signature sequence is a first node, the first node measures a target set of reference signal resources, channel quality of all reference signal resources in the target set of reference signal resources is lower than a first threshold, and a first counter of the first node is incremented by 1; the target reference signal resource group comprises at least one reference signal resource, the first counter reaches a first trigger value, and the first characteristic sequence is triggered.

According to one aspect of the application, comprising:

determining that the first identifier is occupied;

transmitting second signaling and a second signal in a second time window;

wherein the CRC included in the second signaling is scrambled by the first identity; the second signaling comprises configuration information of the second signal, wherein the configuration information comprises a time-frequency resource set occupied by the second signal; the target signal is used to trigger the second signal.

The application discloses a first node for wireless communication, including:

a first transceiver for transmitting the first signature sequence and a target signal;

a first receiver to monitor for first signaling in a first time window; demodulating the first signal when the first signaling is detected;

The application discloses a second node for wireless communication, including:

a second transceiver for receiving the first signature sequence and the target signal;

a first transmitter to transmit a first signaling in a first time window; and transmitting the first signal;

As an example, compared with the conventional scheme, the method has the following advantages:

when the first node triggers handover due to BLF, in order to increase handover speed and avoid interaction of layer three, the first node directly initiates random access to a target cell to which handover is required, so as to avoid triggering measurement report and subsequent interaction between the current serving cell and the target cell, thereby increasing handover efficiency and speed;

because the first node does not establish RRC connection with the target cell, the first node recommends a beam to the target cell in a random access manner, and sends the C-RNTI allocated to the original cell by the first node, that is, the first identifier, to the target cell; the target cell feeds back the C-RNTI allocated by the original cell to the first node through the first signal so as to inform the first node that the target signal is correctly received by the target cell;

when the target cell sends the C-RNTI allocated by the original cell, the target cell also sends the C-RNTI newly allocated by the target cell, that is, the second identifier to the first node to complete the handover.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof with reference to the accompanying drawings in which:

FIG. 1 illustrates a process flow diagram of a first node according to one embodiment of the present application;

FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

figure 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;

FIG. 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;

FIG. 5 shows a flow diagram of a first signal according to an embodiment of the present application;

FIG. 6 shows a flow diagram of a first signal according to another embodiment of the present application;

FIG. 7 shows a flow chart of a first information block according to the application;

FIG. 8 shows a flow chart of a second information block according to the application;

FIG. 9 shows a flow diagram of a second signaling according to the present application;

figure 10 shows a schematic diagram of a first cell and a second cell according to an embodiment of the present application;

FIG. 11 shows a block diagram of a processing arrangement in a first node device according to an embodiment of the present application;

fig. 12 shows a block diagram of a processing apparatus in a second node device according to an embodiment of the present application.

Detailed Description

The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a processing flow diagram of a first node, as shown in fig. 1. In 100 shown in fig. 1, each block represents a step. In embodiment 1, a first node in the present application transmits a first signature sequence and a target signal in step 101; monitoring 102 for a first signaling in a first time window; when the first signaling is detected, the first signal is demodulated.

In embodiment 1, the channel occupied by the first signature sequence includes a random access related channel, and the transmission timing of the target signal is related to the transmission timing of the first signature sequence; the target signal comprises a first identification, the first signal comprises the first identification and a second identification, and CRC included in the first signaling is scrambled by a third identification; the first signaling comprises configuration information of the first signal, wherein the configuration information comprises a time-frequency resource set occupied by the first signal; the target signal is used to trigger the first signal; the first identity is a C-RNTI, the second identity is a C-RNTI and the third identity is an RNTI different from the first identity; the first time window is related to a time domain resource occupied by the target signal.

As one embodiment, the first signal is a wireless signal.

As one embodiment, the first signal is a baseband signal.

As an embodiment, the first signature sequence is a Preamble.

As an embodiment, the first signature sequence is Msg1 (message 1).

As an embodiment, the physical layer channel carrying the first signature sequence comprises a PRACH.

As an embodiment, the first signature sequence is used for a random access procedure.

As an embodiment, MsgA comprises the first signature sequence.

As an embodiment, MsgA comprises the target signal.

As an embodiment, the Physical layer CHannel carrying the target signal includes a PUSCH (Physical Uplink Shared CHannel).

As one embodiment, the target signal includes a Payload (Payload) of MsgA.

As one embodiment, the target signal includes Msg3 (message 3).

As an embodiment, the target signal is used for a random access procedure.

As an embodiment, it is CCCH (Common Control Channel) that carries the target signal.

As an embodiment, the first signaling is a DCI (Downlink control information).

As an embodiment, the Physical layer Channel carrying the first signaling includes a PDCCH (Physical Downlink Control Channel).

As an embodiment, the first signaling is used to indicate a time-frequency resource occupied by the first signal.

As one embodiment, the first signaling is used to schedule the first signal.

As one embodiment, the physical layer channel carrying the first signal comprises a PUSCH.

As an example, the first signal is a Msg4 (message 4).

As an example, the first signal is a collision Resolution (Contention Resolution).

As an example, the first signal is a MsgB (message B).

As one embodiment, the first signal is used for a random access procedure.

For one embodiment, the first signal includes a MAC PDU.

As an embodiment, the first signal includes a collision Resolution Identity MAC Control Element (collision Resolution Identity MAC Control Element) of the first node.

As an embodiment, the first signal includes C-RNTI MAC CE (Control Element).

As one embodiment, the first time window lasts T1 milliseconds in the time domain, and T1 is a positive integer greater than 1.

As an embodiment, the first time window comprises a positive integer number of consecutive time slots (slots) greater than 1 in the time domain.

For one embodiment, the first time window is msgB-ResponseWindow in TS 38.321.

For one embodiment, the duration of the first time window in the time domain is equal to ra-ContentionResolutionTimer in TS 38.321.

As one embodiment, the behavior monitoring includes receiving.

As one embodiment, the behavioral monitoring includes Blind detection (Blind Decoding).

As one embodiment, the behavior monitoring includes coherent detection.

As one embodiment, the behavioral monitoring includes energy detection.

For one embodiment, the behavior monitoring includes passing a CRC check to determine whether the first signaling was received correctly.

As one embodiment, the behavioral demodulation includes receiving.

As one embodiment, the behavioral demodulation includes channel estimation.

As one embodiment, the behavioral demodulation includes channel equalization.

As one embodiment, the behavioral demodulation includes channel decoding.

As an embodiment, when a first signal is not detected in the first time window, the first signal is discarded from being received.

As an embodiment, the first signature sequence and the target signal are retransmitted when a first signaling is not detected in the first time window.

As an embodiment, PREAMBLE _ transition _ COUNTER is incremented by 1 when the first signaling is not detected in said first time window.

As one embodiment, the phrase that the transmission timing of the target signal is related to the transmission timing of the first signature sequence means that: the transmission timing of the first signature sequence is used to determine the transmission timing of the target signal.

As one embodiment, the phrase that the transmission timing of the target signal is related to the transmission timing of the first signature sequence means that: the transmission timing of the first signature sequence and the transmission timing of the target signal are based on a downlink synchronization timing.

As one embodiment, the phrase that the transmission timing of the target signal is related to the transmission timing of the first signature sequence means that: the transmit Timing of the first signature sequence plus a Timing Advance (Timing Advance) is used to determine slot synchronization Timing, the transmit Timing of the target signal is based on the slot synchronization Timing, and the one Timing Advance is indicated by the RAR corresponding to the first signature sequence.

As a sub-embodiment of the above-mentioned embodiments, the transmission timing of the first signature sequence is based on downlink synchronization.

As one embodiment, the phrase that the transmission timing of the target signal is related to the transmission timing of the first signature sequence means that: the first signature sequence and the target signal belong to the same Random Access Procedure (Random Access Procedure).

As an embodiment, the first identifier is a non-negative integer.

As an embodiment, the first identity is network configured by the first node before sending the first signature sequence.

As an embodiment, the first identifier is configured to the first node by a node other than the sender of the first signaling.

As an embodiment, the first identifier is configured by the third node to the first node in this application.

As an embodiment, the second identifier is a non-negative integer.

As an embodiment, the second identity is configured to the first node by a sender of the first signaling.

As an embodiment, the second identifier is configured by the second node to the first node in this application.

As an embodiment, the third identifier is a non-negative integer.

As an embodiment, the third identity is a TC-RNTI (Temporary C-RNTI).

As an embodiment, the third identity is an MSGB-RNTI (message B temporary cell radio network temporary identity).

As an embodiment, the third identifier is linearly related to an index of a time slot occupied by the first signature sequence.

As an embodiment, the third identifier is linearly related to an index of an OFDM (Orthogonal Frequency Division Multiplexing) symbol occupied by the first feature sequence.

As an embodiment, the third identifier is linearly related to a type of a carrier occupied by the first signature sequence.

As one embodiment, the phrase the meaning that the target signal is used to trigger the first signal includes: the target signal and the first signal belong to the same random access procedure.

As one embodiment, the phrase the meaning that the target signal is used to trigger the first signal includes: in response to receiving the target signal, the first signal is transmitted.

As one embodiment, the phrase the meaning that the target signal is used to trigger the first signal includes: the target signal is used to trigger the first signaling.

As an embodiment, the meaning of the phrase that the first time window relates to the time domain resource occupied by the target signal includes: the first time window is after a time slot occupied by the target signal.

As an embodiment, the meaning of the phrase that the first time window relates to the time domain resource occupied by the target signal includes: the time slot occupied by the target signal is used to determine the first time slot in the first time window.

As an embodiment, the meaning of the phrase that the first time window relates to the time domain resource occupied by the target signal includes: the first time slot in the first time window is the L1 th time slot after the time slot occupied by the target signal, and L1 is a positive integer.

As a sub-embodiment of this embodiment, the L1 is 1.

As a sub-embodiment of this embodiment, the L1 is configured through higher layer signaling.

As an embodiment, the number of time slots included in the first time window is independent of the time domain resource occupied by the target signal.

As an embodiment, the number of timeslots comprised by the first time window is configured by higher layer signaling.

As an embodiment, the Random Access related Channel is a PRACH (Physical Random Access Channel).

As an embodiment, the Random Access related Channel includes a RACH (Random Access Channel).

As one embodiment, the sending of the first signature sequence is Contention-Based (Contention Based).

As an embodiment, the sending of the first signature sequence is non-Contention (Contention Free).

As an embodiment, the transmission timing includes synchronization of radio frames.

As one embodiment, the transmission timing includes determining a start time.

As one embodiment, the transmission timing includes synchronization of subframes.

As one embodiment, the transmission timing includes synchronization of time slots.

As one embodiment, the transmission timing includes synchronization of OFDM symbols.

As an embodiment, the first signature sequence and the target signal belong to MsgA (message a) and the first signal belongs to MsgB (message B).

As an embodiment, the first signature sequence occupies a first set of time-frequency resources belonging to a first pool of time-frequency resources that is used only for transmission of PRACH due to mobility.

As a sub-embodiment of this embodiment, the transmission of the PRACH due to mobility includes transmission of the PRACH due to BLF (beam link Failure).

As a sub-embodiment of this embodiment, the transmission of the PRACH due to mobility includes transmission of the PRACH due to triggering inter-cell handover of layer 1 or layer 2.

As a sub-embodiment of this embodiment, the first time-frequency resource pool is dedicated to a terminal group, and terminals in the terminal group support inter-cell handover of layer 1 or layer 2.

As an embodiment, the first signature sequence is only used to generate PRACH triggered by triggering an inter-cell handover of layer 1 or layer 2.

As an embodiment, the target signal includes a second information element, and the second information element is used to determine that the serving cell of the first node is not the cell where the second node is located in this application.

As a sub-embodiment of this embodiment, the second information element indicates a PCI (Physical Cell Identity) of a serving Cell of the first node.

As a sub-embodiment of this embodiment, the second information element is used to indicate that the first signature sequence is triggered by an inter-cell handover of layer 1 or layer 2.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture, as shown in fig. 2.

Fig. 2 illustrates a diagram of a network architecture 200 for 5G NR, LTE (Long-Term Evolution), and LTE-a (Long-Term Evolution-enhanced) systems. The 5G NR or LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200 or some other suitable terminology. The EPS 200 may include a UE (User Equipment) 201, an NG-RAN (next generation radio access Network) 202, an EPC (Evolved Packet Core)/5G-CN (5G-Core Network,5G Core Network) 210, an HSS (Home Subscriber Server) 220, and an internet service 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the EPS provides packet-switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit-switched services or other cellular networks. The NG-RAN includes NR node b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 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 (transmitting receiving node), or some other suitable terminology. The gNB203 provides an access point for the UE201 to the EPC/5G-CN 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, 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., MP3 player), a camera, a game console, a drone, an aircraft, a narrowband internet of things device, a machine type communication device, a terrestrial vehicle, an automobile, a wearable device, or any other similar functioning device. Those 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 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 terminology. The gNB203 connects to the EPC/5G-CN210 through the S1/NG interface. The EPC/5G-CN210 includes MME (Mobility Management Entity)/AMF (Authentication Management Domain)/UPF (User Plane Function) 211, other MMEs/AMF/UPF 214, S-GW (Service Gateway) 212, and P-GW (Packet data Network Gateway) 213. MME/AMF/UPF211 is a control node that handles signaling between UE201 and EPC/5G-CN 210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW 213. The P-GW213 provides UE IP address allocation as well as other functions. The P-GW213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a packet-switched streaming service.

As an embodiment, the UE201 corresponds to the first node in this application.

As an embodiment, the UE201 is a terminal with inter-cell handover capability triggering L1/L2.

As an embodiment, the UE201 is a terminal with the capability of monitoring multiple beams simultaneously.

As an embodiment, the UE201 is a terminal supporting Massive-MIMO.

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

As an embodiment, the gNB203 supports inter-cell handover functionality of L1/L2.

As an embodiment, the gNB203 supports multi-beam transmission.

As an embodiment, the UE201 supports Massive-MIMO based transmission.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture for the control plane 300 between a first communication node device (UE, RSU in gbb or V2X) and a second communication node device (gbb, RSU in UE or V2X) in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. 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 through PHY 301. The L2 layer 305 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 ciphering data packets, and the PDCP sublayer 304 also provides handover support for a first communication node device to a second communication node device. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ. 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 one cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. A RRC (Radio resource Control) sublayer 306 in layer 3 (layer L3) in the Control plane 300 is responsible for obtaining Radio resources (i.e., Radio bearers) and configuring the 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 comprises layer 1(L1 layer) and layer 2(L2 layer), the radio protocol architecture in the user plane 350 for the first and second communication node devices being substantially the same 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 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes an SDAP (Service Data Adaptation Protocol) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support diversity of services. Although not shown, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.).

As an example, the wireless protocol architecture in fig. 3 is applicable to the first node in this application.

As an example, the radio protocol architecture in fig. 3 is applicable to the second node in this application.

As an example, the radio protocol architecture in fig. 3 is applicable to the third node in the present application.

As an embodiment, the PDCP304 of the second communication node device is used to generate a schedule for the first communication node device.

As an embodiment, the PDCP354 of the second communication node device is used to generate a schedule for the first communication node device.

As an embodiment, the first signature sequence in this application is generated in the PHY301 or the PHY 351.

As an embodiment, the first signature sequence in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the target signal in the present application is generated in the PHY301 or the PHY 351.

As an embodiment, the target signal in the present application is generated in the MAC302 or the MAC 352.

As an embodiment, the target signal in this application is generated in the RRC 306.

As an embodiment, the first signaling in the present application is generated in the PHY301 or the PHY 351.

As an embodiment, the first signaling in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the first signal in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the first signal in this application is generated in the RRC 306.

As an embodiment, the third signal in the present application is generated in the PHY301 or the PHY 351.

As an embodiment, the third signal in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the third signal in this application is generated in the RRC 306.

As an embodiment, the first information block in this application is generated in the RRC 306.

As an embodiment, the second information block in this application is generated in the RRC 306.

As an embodiment, the second signaling in this application is generated in the PHY301 or the PHY 351.

As an embodiment, the second signaling in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the second signal in the present application is generated in the PHY301 or the PHY 351.

As an embodiment, the second signal in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the second signal in this application is generated in the RRC 306.

As an embodiment, the first node is a terminal.

As an embodiment, the second node is a terminal.

As an embodiment, the second node is a TRP (Transmitter Receiver Point).

Example 4

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

The first communications 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.

The second communication device 410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multiple antenna receive processor 472, a multiple antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.

In the transmission from the second communication device 410 to the first communication device 450, at the second 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 layer L2. In transmissions from the second communications device 410 to the first communications 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 first communications device 450 based on various priority metrics. The controller/processor 475 is also responsible for retransmission of lost packets, and signaling to the first 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 410, as well as mapping of signal constellation 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. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate the physical channels carrying the time-domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream that is then provided to a different antenna 420.

In a transmission from the second communications apparatus 410 to the first communications apparatus 450, each receiver 454 receives a signal through its respective antenna 452 at the first communications apparatus 450. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to a receive processor 456. Receive processor 456 and multi-antenna receive processor 458 implement the various signal processing functions of the L1 layer. A multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. Receive processor 456 converts the baseband multicarrier symbol stream after the receive analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered at a receive processor 456 and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communications device 410 on the physical channel. The upper layer data and control signals are then provided to a controller/processor 459. The controller/processor 459 implements the functionality of the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In transmissions from the second communications device 410 to the second communications device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the core network. The upper layer packet is then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In a transmission from the first communications device 450 to the second communications device 410, a data source 467 is used at the first communications device 450 to provide upper layer data packets to a controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the send function at the second communications apparatus 410 described in the transmission from the second communications apparatus 410 to the first communications apparatus 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, implementing L2 layer functions for the user plane and control plane. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to said second communications device 410. A transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding by a multi-antenna transmit processor 457 including codebook-based precoding and non-codebook based precoding, and beamforming, and the transmit processor 468 then modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are provided to different antennas 452 via a transmitter 454 after analog precoding/beamforming 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 provides the radio frequency symbol stream to the antenna 452.

In a transmission from the first communication device 450 to the second communication device 410, the functionality at the second communication device 410 is similar to the receiving functionality at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives an rf signal through its respective antenna 420, converts the received rf signal to a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multiple antenna receive processor 472 collectively implement the functionality of the L1 layer. Controller/processor 475 implements the L2 layer functions. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In transmission from the first communications device 450 to the second communications device 410, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the UE 450. Upper layer data packets from the controller/processor 475 may be provided to a core network.

As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, for use with the at least one processor, the first communication device 450 apparatus at least: transmitting the first characteristic sequence and a target signal; and monitoring the first signaling in a first time window; demodulating the first signal when the first signaling is detected; the channel occupied by the first characteristic sequence comprises a random access related channel, and the transmission timing of the target signal is related to the transmission timing of the first characteristic sequence; the target signal comprises a first identification, the first signal comprises the first identification and a second identification, and CRC included in the first signaling is scrambled by a third identification; the first signaling comprises configuration information of the first signal, wherein the configuration information comprises a time-frequency resource set occupied by the first signal; the target signal is used to trigger the first signal; the first identity is a C-RNTI, the second identity is a C-RNTI and the third identity is an RNTI different from the first identity; the first time window is related to a time domain resource occupied by the target signal.

As an embodiment, the first communication device 450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: transmitting the first characteristic sequence and a target signal; and monitoring the first signaling in a first time window; demodulating the first signal when the first signaling is detected; the channel occupied by the first characteristic sequence comprises a random access related channel, and the transmission timing of the target signal is related to the transmission timing of the first characteristic sequence; the target signal comprises a first identification, the first signal comprises the first identification and a second identification, and CRC included in the first signaling is scrambled by a third identification; the first signaling comprises configuration information of the first signal, wherein the configuration information comprises a time-frequency resource set occupied by the first signal; the target signal is used to trigger the first signal; the first identity is a C-RNTI, the second identity is a C-RNTI and the third identity is an RNTI different from the first identity; the first time window is related to a time domain resource occupied by the target signal.

As an embodiment, the second communication device 410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 410 means at least: receiving a first signature sequence and a target signal; and transmitting the first signaling in the first time window; and transmitting the first signal; the channel occupied by the first characteristic sequence comprises a random access related channel, and the transmission timing of the target signal is related to the transmission timing of the first characteristic sequence; the target signal comprises a first identification, the first signal comprises the first identification and a second identification, and CRC included in the first signaling is scrambled by a third identification; the first signaling comprises configuration information of the first signal, wherein the configuration information comprises a time-frequency resource set occupied by the first signal; the target signal is used to trigger the first signal; the first identity is a C-RNTI, the second identity is a C-RNTI and the third identity is an RNTI different from the first identity; the first time window is related to a time domain resource occupied by the target signal.

As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a first signature sequence and a target signal; and transmitting the first signaling in the first time window; and transmitting the first signal; the channel occupied by the first characteristic sequence comprises a random access related channel, and the transmission timing of the target signal is related to the transmission timing of the first characteristic sequence; the target signal comprises a first identification, the first signal comprises the first identification and a second identification, and CRC included in the first signaling is scrambled by a third identification; the first signaling comprises configuration information of the first signal, wherein the configuration information comprises a time-frequency resource set occupied by the first signal; the target signal is used to trigger the first signal; the first identity is a C-RNTI, the second identity is a C-RNTI and the third identity is an RNTI different from the first identity; the first time window is related to a time domain resource occupied by the target signal.

As an embodiment, the first communication device 450 corresponds to a first node in the present application.

As an embodiment, the second communication device 410 corresponds to a second node in the present application.

For one embodiment, the first communication device 450 is a UE.

For one embodiment, the first communication device 450 is a terminal.

For one embodiment, the second communication device 410 is a base station.

For one embodiment, the second communication device 410 is a network device.

For one embodiment, the second communication device 410 is a serving cell.

For one embodiment, the second communication device 410 is a TRP.

As one implementation, at least the first four of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459 are used to send a first signature sequence and a target signal; 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 are configured to receive a first signature sequence and a target signal.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 are configured to monitor for first signaling during a first time window; and when the first signaling is detected, demodulating the first signal; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475 are configured to send first signaling in a first time window; and transmits the first signal.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 are configured to receive a third signal; and when the first signaling is detected, demodulating the first signal; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475 are configured to send a third signal in a first time window.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 are configured to receive a first block of information; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475 are used to send a first information block.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller/processor 459 are configured to select the first reference signal resource from the M1 candidate reference signal resources.

As one implementation, at least the first four of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459 are used to select the first reference signal resource from the M1 candidate reference signal resources.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 are configured to receive a second block of information; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 are used to send a second information block.

For one embodiment, at least the first four of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459 are configured to measure a set of target reference signal resources; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 are configured to send a first type of reference signal in the set of target reference signal resources.

For one embodiment, 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 are used to determine that the first identifier is occupied.

For one embodiment, at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 are configured to send the second signaling and the second signal in a second time window.

Example 5

Embodiment 5 illustrates a flow chart of a first signal, as shown in fig. 5. In FIG. 5, a first node U1 communicates with a second node N2 via a wireless link. It should be noted that the sequence in the present embodiment does not limit the signal transmission sequence and the implementation sequence in the present application. Without conflict, the embodiment, the attached sub-embodiment, and the attached embodiment in embodiment 5 can be applied to embodiment 6, embodiment 7, embodiment 8, and embodiment 9.

For theFirst node U1Transmitting the first feature sequence in step S10; receiving a third signal in step S11; transmitting a target signal in step S12; the first signaling is monitored in a first time window in step S13, and when the first signaling is detected, the first signal is demodulated.

For theSecond node N2Receiving a first feature sequence in step S20; transmitting a third signal in step S21; receiving a target signal in step S22; in step S23, the first signaling and the first signal are transmitted in a first time window.

In embodiment 5, the channel occupied by the first signature sequence includes a random access related channel, and the transmission timing of the target signal is related to the transmission timing of the first signature sequence; the target signal comprises a first identification, the first signal comprises the first identification and a second identification, and CRC included in the first signaling is scrambled by a third identification; the first signaling comprises configuration information of the first signal, wherein the configuration information comprises a time-frequency resource set occupied by the first signal; the target signal is used to trigger the first signal; the first identity is a C-RNTI, the second identity is a C-RNTI and the third identity is an RNTI different from the first identity; the first time window is related to time domain resources occupied by the target signal; the first signature sequence is used to trigger the third signal, which is indicative of the third identity.

For one embodiment, the first node U1 receives a third signal after the first signature sequence is transmitted and before the target signal is transmitted.

For one embodiment, the second node N2 sends a third signal after the first signature sequence is received and before the target signal is received.

As an example, the third signal is Msg 2.

As one embodiment, the third signal includes RAR.

As an embodiment, the third signal comprises a RAR in response to the first signature sequence, and the third identity is TEMPORARY _ C-RNTI.

As an embodiment, the first signature sequence, the third signal, the target signal, and the first signal comprise Msg1, Msg2, Msg3, and Msg4, respectively.

As an embodiment, the start time of the first time window is a start time of ra-ContentionResolutionTimer, and the end time of the first time window is a time when ra-ContentionResolutionTimer expires.

As an embodiment, the start time of the first time window is the start time of the ra-ContentionResolutionTimer, and the end time of the first time window is the time at which the ra-ContentionResolutionTimer is stopped (Stop).

As an embodiment, the first identifier is configured by a first cell, the second identifier and the third identifier are configured by a second cell, and the first cell and the second cell are different; a first air interface resource is used for determining a first reference signal resource, and the first air interface resource comprises at least one of a time domain resource occupied by the first characteristic sequence, a frequency domain resource occupied by the first characteristic sequence and a preamble index; or, the target signal comprises a first information unit, the first information unit in the target signal is used to indicate a first reference signal resource; the first reference signal resource is maintained by the second cell.

As a sub-embodiment of this embodiment, the second cell is attached to the second node N2.

As a sub-embodiment of this embodiment, the first cell is not attached to the second node N2.

As a sub-embodiment of this embodiment, the second cell is the second node N2.

As a sub-embodiment of this embodiment, the first cell is not the second node N2.

As a sub-embodiment of this embodiment, both the second cell and the first cell are attached to the second node N2.

As a sub-embodiment of this embodiment, the first Cell is a Cell (Cell).

As a sub-embodiment of this embodiment, the second Cell is a Cell (Cell).

As a sub-embodiment of this embodiment, the first Cell is a Serving Cell (Serving Cell).

As a sub-embodiment of this embodiment, the second Cell is a Serving Cell (Serving Cell).

As a sub-embodiment of this embodiment, the PCID adopted by the first cell and the PCI adopted by the second cell are different.

As a sub-embodiment of this embodiment, the first cell is a currently camped cell of the first node.

As a sub-embodiment of this embodiment, the second cell is a target cell in an inter-cell (Intercell) Layer 1(Layer 1) handover initiated by the first node.

As a sub-embodiment of this embodiment, the first node and the first cell have established an RRC connection, and the first node and the second cell have not established an RRC connection.

As a sub-embodiment of this embodiment, the first air interface resource includes a time-frequency PRACH opportunity (time-frequency PRACH occasion) occupied by the first feature sequence and a Preamble Index (Preamble Index) of the first feature sequence.

As a sub-embodiment of this embodiment, the phrase that the first reference signal resource is maintained by the second cell comprises: the reference signals in the first reference signal resource are transmitted by the second cell.

As a sub-embodiment of this embodiment, the first reference Signal resource includes SSB (Synchronization Signal Block).

As a sub-embodiment of this embodiment, the cell identity of the second cell is used to generate the SSB included in the first reference signal resource.

As a sub-embodiment of this embodiment, the first Reference Signal resource includes a CSI-RS (Channel State Information-Reference Signal).

As a sub-embodiment of this embodiment, the first reference Signal resource includes an SSB (synchronization Signal/physical broadcast channel Block).

As a sub-embodiment of this embodiment, the first reference signal resource comprises a CSI-RS resource.

As a sub-embodiment of this embodiment, the first reference signal resource comprises an SSB resource.

As a sub-embodiment of this embodiment, the first reference signal resource corresponds to a CSI-RS resource Identity (Identity).

As a sub-embodiment of this embodiment, the first reference signal resource corresponds to a CSI-RS resource set Identity (Identity).

As a sub-embodiment of this embodiment, the first reference signal resource corresponds to an SSB Index (Index).

As a sub-embodiment of this embodiment, the first reference signal Resource corresponds to a CORESET (Control Resource SeT) identifier.

As a sub-embodiment of this embodiment, the first reference signal resource corresponds to a CORESET pool identifier.

As a sub-embodiment of this embodiment, the first reference signal resource corresponds to a Search Space Set (Search Space Set) identifier.

As a sub-embodiment of this embodiment, the first reference signal resource corresponds to a search space set pool identifier.

As a sub-embodiment of this embodiment, the first information element is a MAC CE.

As a sub-embodiment of this embodiment, the first information element is a BFR (Beam Failure Recovery) MAC CE.

As a sub-embodiment of this embodiment, the phrase that the first reference signal resource is maintained by the second cell means that: the configuration parameter of the first Reference Signal Resource is configured by a higher layer signaling sent by the second cell, and the configuration parameter of the first Reference Signal Resource includes at least one of occupied Resource Element (RE) and Reference Signal (RS) sequence generation parameters.

As an auxiliary embodiment of this sub-embodiment, the higher layer signaling sent by the second cell includes NZP-CSI-RS-Resource IE (Information Element).

As an auxiliary embodiment of the sub-embodiment, the higher layer signaling sent by the second cell includes ZP-CSI-RS-Resource IE (Information Element).

As an additional embodiment of this sub-embodiment, the higher layer signaling sent by the second cell includes a CSI-IM-Resource IE.

As an additional embodiment of this sub-embodiment, the higher layer signaling sent by the second cell includes SSB.

As an additional embodiment of this sub-embodiment, the higher layer signaling sent by the second cell comprises a PDCCH-ConfigCommon IE.

As an additional embodiment of this sub-embodiment, the higher layer signaling sent by the second cell includes BWP-downlinlnkcommon IE.

As an additional embodiment of this sub-embodiment, the higher layer signaling sent by the second cell includes a CORESET IE.

As a sub-embodiment of this embodiment, the receiver of the first signature sequence and the target signal is the second cell, and the sender of the first signaling and the first signal is the second cell.

As a sub-embodiment of this embodiment, the sender of the third signal is the second cell.

As one embodiment, the act of demodulating the first signal includes attempting to recover a first MAC PDU, the first MAC PDU including the first identity and the second identity; and only when the first MAC PDU is recovered, judging that the random access process to which the first characteristic sequence belongs is successful.

As a sub-embodiment of this embodiment, when the first MAC PDU is not recovered according to the wireless signal received in the first time window, the first node U1 determines that the random access procedure to which the first signature sequence belongs fails.

As a sub-embodiment of this embodiment, when the first signaling is detected and the first MAC PDU is not recovered, the first node U1 cannot determine that the random access procedure to which the first signature sequence belongs is successful.

Example 6

Embodiment 6 illustrates a flow chart of another first signal, as shown in fig. 6. In FIG. 6, a first node U3 communicates with a second node N4 via a wireless link. It should be noted that the sequence in the present embodiment does not limit the signal transmission sequence and the implementation sequence in the present application. Without conflict, the embodiment, the attached sub-embodiment, and the attached embodiment in embodiment 6 can be applied to embodiment 5, embodiment 7, embodiment 8, and embodiment 9.

For theFirst node U3Transmitting the first signature sequence and the target signal in step S30; monitoring the first signaling in a first time window in step S31, and demodulating the first signal when the first signaling is detected;

for theSecond node N4Receiving the first signature sequence and the target signal in step S40; in step S41, the first signaling and the first signal are transmitted in a first time window.

In embodiment 6, the channel occupied by the first signature sequence includes a random access related channel, and the transmission timing of the target signal is related to the transmission timing of the first signature sequence; the target signal comprises a first identification, the first signal comprises the first identification and a second identification, and CRC included in the first signaling is scrambled by a third identification; the first signaling comprises configuration information of the first signal, wherein the configuration information comprises a time-frequency resource set occupied by the first signal; the target signal is used to trigger the first signal; the first identity is a C-RNTI, the second identity is a C-RNTI and the third identity is an RNTI different from the first identity; the first time window is related to a time domain resource occupied by the target signal.

As an embodiment, the first signature sequence and the target signal belong to the same MSGA message, and the third identifier is an MSGB-RNTI.

As one embodiment, the first time window is msgB-ResponseWindow.

As one embodiment, the first signal includes MsgB.

Example 7

Embodiment 7 illustrates a flow chart of a first block of information, as shown in fig. 7. In FIG. 7, a first node U5 communicates with a second node N6 via a wireless link. It should be noted that the sequence in the present embodiment does not limit the signal transmission sequence and the implementation sequence in the present application. Without conflict, the embodiment, the attached sub-embodiment, and the attached embodiment in embodiment 7 can be applied to embodiment 5, embodiment 6, embodiment 8, and embodiment 9.

For theFirst node U5The first information block is received in step S50, the wireless signal is received in M1 candidate reference signal resources in step S51, and the first reference signal resource is selected from M1 candidate reference signal resources in step S52.

For theSecond node N6The first information block is transmitted in step S60, and the wireless signals are transmitted in M1 candidate reference signal resources in step S61.

In embodiment 7, the first reference signal resource is one of the M1 candidate reference signal resources; the sender of the first information block is the first cell; the M1 is a positive integer greater than 1.

As an embodiment, the wireless signals transmitted in the M1 candidate reference signal resources include CSI-RS.

For one embodiment, the wireless signals transmitted in the M1 candidate reference signal resources include SSBs.

As an embodiment, the first information block is RRC signaling.

As an embodiment, the first information block is specific to the second cell in this application.

As an embodiment, the first information block comprises higher layer signaling.

As an embodiment, the RRC signaling carrying the first information block includes candidatebeamrslst.

As an embodiment, the RRC signaling carrying the first information block includes BeamFailureRecoveryConfig.

As an embodiment, the RRC signaling carrying the first information block includes an SSB.

As an embodiment, the RRC signaling carrying the first Information block includes a ControlResourceSet IE (Information Elements).

As an embodiment, the RRC signaling carrying the first information block includes SearchSpace IE.

As an embodiment, the RRC signaling carrying the first information block includes a PDCCH-ConfigCommon IE.

As an embodiment, the RRC signaling carrying the first information block includes BWP-DownlinkCommon IE.

As an embodiment, the RRC signaling carrying the first information block includes a CSI-IM-Resource IE.

As an embodiment, the RRC signaling carrying the first information block includes CSI-MeasConfig IE.

As an embodiment, the RRC signaling carrying the first information block includes CSI-ResourceConfig IE.

As an embodiment, the RRC signaling carrying the first information block includes CSI-ResourceConfigMobility IE.

As an embodiment, the RRC signaling carrying the first information block includes CSI-SSB-ResourceSet IE.

As an embodiment, the name of RRC signaling carrying the first information block includes CSI.

As an embodiment, the name of RRC signaling carrying the first information block includes RS.

As an embodiment, the name of the RRC signaling carrying the first information block includes Resource.

As an embodiment, the name of RRC signaling carrying the first information block includes Mobility.

As an embodiment, the name of RRC signaling carrying the first information block includes at least one of L1 or L2.

As an embodiment, the name of the RRC signaling carrying the first information block includes an Intercell.

For an embodiment, any one of the M1 candidate reference signal resources includes a CSI-RS.

For one embodiment, any one of the M1 candidate reference signal resources includes an SSB.

For an embodiment, any one of the M1 candidate reference signal resources includes a CSI-RS resource.

For one embodiment, any one of the M1 candidate reference signal resources includes an SSB resource.

For one embodiment, at least one of the M1 candidate reference signal resources includes a CSI-RS.

For one embodiment, at least one of the M1 candidate reference signal resources includes an SSB.

For one embodiment, at least one of the M1 candidate reference signal resources includes a CSI-RS resource.

For one embodiment, at least one of the M1 candidate reference signal resources includes an SSB resource.

As an embodiment, any candidate reference signal resource in the M1 candidate reference signal resources corresponds to one CSI-RS resource identifier.

As an embodiment, any one of the M1 candidate reference signal resources corresponds to an SSB index.

As an embodiment, any one of the M1 candidate reference signal resources corresponds to one CSI-RS resource set identifier.

As an embodiment, at least one of the M1 candidate reference signal resources corresponds to one CSI-RS resource identifier.

As an embodiment, at least one of the M1 candidate reference signal resources corresponds to an SSB index.

As an embodiment, at least one candidate reference signal resource of the M1 candidate reference signal resources corresponds to a CORESET identifier.

As an embodiment, at least one candidate reference signal resource among the M1 candidate reference signal resources corresponds to a CORESET pool identifier.

As an embodiment, at least one of the M1 candidate reference signal resources corresponds to a search space set identifier.

As an embodiment, at least one of the M1 candidate reference signal resources corresponds to a search space set pool identifier.

As an embodiment, the M1 candidate reference signal resources are all maintained by the second cell.

As an embodiment, at least one of the M1 candidate reference signal resources is maintained by the first cell.

As one embodiment, the M1 is no greater than 1024.

As one example, the M1 is no greater than 64.

As an example, how to select the first reference signal resource is implementation dependent, i.e. self-determined by the device manufacturer.

As a sub-implementation of the above embodiment, the channel quality of none of the M1 candidate reference signal resources exceeds a certain threshold.

For one embodiment, the first reference signal resource has a highest channel quality among the M1 candidate reference signal resources.

For one embodiment, the channel quality of only M3 of the M1 candidate reference signal resources exceeds a certain threshold, the first reference signal resource can only be selected from the M3 candidate reference signal resources, and the M3 is a positive integer.

As an embodiment, the M3 is a positive integer greater than 1, and how to select the first reference signal resource from the M3 candidate reference signal resources is implementation dependent, i.e. self-determined by the device vendor.

As an embodiment, the reference signal resource maintained by the first cell among the M1 candidate reference signal resources is preferentially selected.

As a sub-embodiment of the above embodiment, the first reference signal resource is selected only if the channel quality of any of the M1 candidate reference signal resources and only the first reference signal resource exceeds a certain threshold.

As an example, the particular threshold in this application is configurable.

As an example, the specific threshold value in this application is fixed.

As an example, the specific threshold in this application is rsrp-ThresholdCSI-RS or rsrp-ThresholdSSB.

As an embodiment, the specific threshold in the present application is RSRP (Reference Signal Received Power).

As an example, the specific threshold in the present application is RSRQ (Reference Signal Received Quality).

As an embodiment, the specific threshold in this application is RSSI (Received Signal Strength Indicator).

As an example, the specific threshold in this application is BLER (Block Error Rate).

As an example, the specific threshold in the present application is SINR (Signal-to-noise and interference ratio).

As an example, the specific threshold in this application is SNR (Signal-to-noise ratio).

As an example, the unit of the specific threshold in this application is dBm (decibels).

As an example, the unit of the specific threshold in this application is dB (decibel).

As one example, the unit of the particular threshold in this application is milliwatts.

As an example, the specific threshold in this application is a percentage.

As one embodiment, the first information block indicates a cell identity of the second cell for M2 of the M1 candidate reference signal resources, the M2 being a positive integer no greater than the M1.

As an embodiment, the channel quality in the present application includes RSRP.

As an embodiment, the channel quality in the present application includes RSRQ.

As an embodiment, the channel quality in the present application includes RSSI.

As an embodiment, the channel quality in this application includes BLER.

As an example, the channel quality in the present application includes SNR.

As an embodiment, the channel quality in this application includes SINR.

Example 8

Embodiment 8 illustrates a flow chart of a second block of information, as shown in fig. 8. In FIG. 8, a first node U7 communicates with a second node N8 via a wireless link. It should be noted that the sequence in the present embodiment does not limit the signal transmission sequence and the implementation sequence in the present application. Without conflict, the embodiment, the attached sub-embodiment, and the attached embodiment in embodiment 8 can be applied to embodiment 5, embodiment 6, embodiment 7, and embodiment 9.

For theFirst node U7The second information block is received in step S70, and is received in step S71The wireless signals are received in the target set of reference signal resources, and the target set of reference signal resources is measured in step S72.

For theSecond node N8The second information block is transmitted in step S80, and the wireless signals are transmitted in the target set of reference signal resources in step S81.

In embodiment 8, the second information block indicates the target set of reference signal resources, the channel quality of all reference signal resources in the target set of reference signal resources is lower than a first threshold, and a first counter is increased by 1; the target reference signal resource group comprises at least one reference signal resource, and the first characteristic sequence is triggered to be sent as the first counter reaches a first trigger value.

For one embodiment, the wireless signals transmitted in the target set of reference signal resources include CSI-RS.

For one embodiment, the wireless signals transmitted in the target set of reference signal resources include SSBs.

As one embodiment, the measuring the set of target reference signal resources includes measuring channel quality of wireless signals transmitted in the set of target reference signal resources.

As an embodiment, the target set of reference signal resources is maintained by the first cell in the present application.

For one embodiment, the set of target reference signal resources includes N1 reference signal resources of a first type, the N1 being a positive integer.

As a sub-embodiment of this embodiment, the N1 first-type reference signal resources are maintained by the first cell in this application.

As a sub-embodiment of this embodiment, at least one first type reference signal resource exists in the N1 first type reference signal resources, and is maintained by the second cell in this application.

As a sub-embodiment of this embodiment, said N1 is equal to 1.

As a sub-embodiment of this embodiment, said N1 is a positive integer greater than 1.

As a sub-embodiment of this embodiment, the N1 is no greater than 1024.

As a sub-embodiment of this embodiment, the N1 is no greater than 64.

As a sub-embodiment of this embodiment, any one of the N1 first type reference signal resources includes a CSI-RS.

As a sub-embodiment of this embodiment, any one of the N1 first-type reference signal resources includes an SSB.

As a sub-embodiment of this embodiment, any one of the N1 first type reference signal resources includes a CSI-RS resource.

As a sub-embodiment of this embodiment, any one of the N1 first-type reference signal resources includes an SSB resource.

As a sub-embodiment of this embodiment, at least one of the N1 first type reference signal resources includes an SSB.

As a sub-embodiment of this embodiment, at least one of the N1 first type reference signal resources includes a CSI-RS resource.

As a sub-embodiment of this embodiment, at least one of the N1 first-type reference signal resources includes an SSB resource.

As a sub-embodiment of this embodiment, any one of the N1 first-type reference signal resources corresponds to one CSI-RS resource identifier.

As a sub-embodiment of this embodiment, any one of the N1 first-type reference signal resources corresponds to an SSB index.

As a sub-embodiment of this embodiment, any one of the N1 first-type reference signal resources corresponds to one CSI-RS resource set identifier.

As a sub-embodiment of this embodiment, at least one first type reference signal resource among the N1 first type reference signal resources corresponds to a CSI-RS resource identifier.

As a sub-embodiment of this embodiment, at least one first type reference signal resource among the N1 first type reference signal resources corresponds to an SSB index.

As a sub-embodiment of this embodiment, at least one first type reference signal resource of the N1 first type reference signal resources corresponds to a CORESET identifier.

As a sub-embodiment of this embodiment, at least one first-type reference signal resource of the N1 first-type reference signal resources corresponds to a CORESET pool identifier.

As a sub-embodiment of this embodiment, at least one of the N1 first-class reference signal resources corresponds to a search space set identifier.

As a sub-embodiment of this embodiment, at least one first type reference signal resource of the N1 first type reference signal resources corresponds to a search space set pool identifier.

As an embodiment, in response to the channel quality of all reference signal resources in the target set of reference signal resources being below a first threshold, an indication is sent to a higher layer, which increases the first counter by 1 in dependence on the received indication.

As an embodiment, the higher layer is the MAC layer.

As an example, the higher layer belongs to the L2 layer.

As one embodiment, the first COUNTER is BFI _ COUNTER.

For one embodiment, the first trigger value is configurable.

As an embodiment, the first trigger value is a beamf ailurelnstancememaxcount.

As an embodiment, the first trigger value is equal to 1.

As one embodiment, the first trigger value is a positive integer greater than 1.

As an embodiment, the second information block includes failureDetectionResources.

As an embodiment, the second information block includes beamFailureDetectionResourceList.

As an embodiment, the RRC signaling carrying the second information block includes candidatebeamrslst.

As an embodiment, the RRC signaling carrying the second information block includes BeamFailureRecoveryConfig.

As an embodiment, the RRC signaling carrying the second information block includes an SSB.

As an embodiment, the RRC signaling carrying the second information block includes a ControlResourceSet IE.

As an embodiment, the RRC signaling carrying the second information block includes SearchSpace IE.

As an embodiment, the RRC signaling carrying the second information block includes a PDCCH-ConfigCommon IE.

As an embodiment, the RRC signaling carrying the second information block includes BWP-DownlinkCommon IE.

As an embodiment, the RRC signaling carrying the second information block includes a CSI-IM-Resource IE.

As an embodiment, the RRC signaling carrying the second information block includes CSI-MeasConfig IE.

As an embodiment, the RRC signaling carrying the second information block includes CSI-ResourceConfig IE.

As an embodiment, the RRC signaling carrying the second information block includes CSI-ResourceConfigMobility IE.

As an embodiment, the RRC signaling carrying the second information block includes CSI-SSB-ResourceSet IE.

As an embodiment, the name of RRC signaling carrying the second information block includes CSI.

As an embodiment, the name of RRC signaling carrying the second information block includes RS.

As an embodiment, the name of the RRC signaling carrying the second information block includes Resource.

As an embodiment, the name of RRC signaling carrying the second information block includes Mobility.

As an embodiment, the name of RRC signaling carrying the second information block includes at least one of L1 or L2.

As an embodiment, the name of the RRC signaling carrying the second information block includes an Intercell.

As an embodiment, the first threshold value in this application is configurable.

As an example, the first threshold in this application is fixed.

As an example, the first threshold in this application is rsrp-threshold _ SI-RS or rsrp-threshold SSB.

As an embodiment, the first threshold in this application is RSRP.

As an embodiment, the first threshold in this application is RSRQ.

As an embodiment, the first threshold in this application is RSSI.

As an embodiment, the first threshold in this application is BLER.

As an embodiment, the first threshold in this application is SINR.

As an embodiment, the first threshold in this application is SNR.

As an example, the unit of the first threshold in this application is dBm.

As an example, the unit of the first threshold in this application is dB.

As one example, the unit of the first threshold in this application is milliwatts.

As an example, the first threshold in this application is a percentage.

Example 9

Embodiment 9 illustrates a flow chart of the second signaling, as shown in fig. 9. In FIG. 9, the third node U9 communicates with the second node N10 via a wireless link. It should be noted that the sequence in the present embodiment does not limit the signal transmission sequence and the implementation sequence in the present application. Without conflict, the embodiment, the attached sub-embodiment, and the attached embodiment in embodiment 9 can be applied to embodiment 5, embodiment 6, embodiment 7, and embodiment 8.

For theThird node U9A fourth signal is transmitted in step S90, and second signaling and a second signal are received in a second time window in step S91.

For theSecond node N10A fourth signal is received in step S100, the first identifier is determined to be occupied in step S101, and a second signaling and a second signal are transmitted in a second time window in step S102.

In embodiment 9, the fourth signal carries the first identifier, and a CRC included in the second signal is scrambled by the first identifier; the second signaling comprises configuration information of the second signal, wherein the configuration information comprises a time-frequency resource set occupied by the second signal; the target signal is used to trigger the second signal.

As an example, the third node U9 and the first node in this application are two different terminals.

As an example, the phrase determining that the first identifier is occupied may include: the second node N10 determines that the first identity was assigned to the third node U9 by the second node N10.

As an example, the third node U9 is a terminal other than the first node in this application.

For one embodiment, the third node U9 establishes an RRC connection with the second node N10.

For one embodiment, the third node U9 is serviced by the second node N10.

As an embodiment, the serving cell of the third node U9 is the second node N10.

As an example, the phrase determining that the first identifier is occupied may include: the first identity has been used by the second node N10.

As an embodiment, the time resource occupied by the first time window is the same as the time resource occupied by the second time window.

As an embodiment, the time resource occupied by the first time window is orthogonal to the time resource occupied by the second time window.

As an embodiment, the second time window occupies a positive integer number of consecutive time slots greater than 1.

As an example, the fourth signal is an Msg 2.

As an example, the fourth signal is a MsgA.

As an example, the second signal is a Msg4 (message 4).

As an example, the second signal is a collision Resolution (Contention Resolution).

As an example, the second signal is a MsgB (message B).

As an embodiment, the second signal is used for a random access procedure.

For one embodiment, the second signal includes a MAC PDU.

As one embodiment, the second signal includes a collision resolution identity MAC control element of the first node.

For one embodiment, the second signal includes C-RNTI MAC CE.

Example 10

Embodiment 10 illustrates a schematic diagram of a first cell and a second cell, as shown in fig. 10. In fig. 10, a first node in the present application resides in a first cell, and a second cell is a neighboring cell of the first cell; the second cell maintains transmission of M1 beams, the M1 beams respectively correspond to M1 candidate reference signal resources, and the second cell respectively sends M1 candidate reference signals on the M1 candidate reference signal resources for terminal side Beam Management (Beam Management); the first cell is configured to transmit N1 beams, the N1 beams respectively correspond to N1 first-class reference signal resources included in a target reference signal resource group, and the first cell respectively transmits N1 first-class reference signals on the N1 first-class reference signal resources for terminal-side beam management. The first node finds that the channel quality detected on all of the N1 first type reference signals is below a first threshold, and that the channel quality detected on at least one of the M1 candidate reference signals is above a particular threshold. The first node initiates a cell handover from the first cell to the layer 1/2 of the second cell.

Example 11

Embodiment 11 illustrates a block diagram of the structure in a first node, as shown in fig. 11. In fig. 11, a first node 1100 comprises a first transceiver 1101 and a first receiver 1102.

A first transceiver 1101 that transmits the first signature sequence and a target signal;

a first receiver 1102 that monitors a first signaling during a first time window; demodulating the first signal when the first signaling is detected;

in embodiment 11, the channel occupied by the first signature sequence includes a random access related channel, and the transmission timing of the target signal is related to the transmission timing of the first signature sequence; the target signal comprises a first identification, the first signal comprises the first identification and a second identification, and CRC included in the first signaling is scrambled by a third identification; the first signaling comprises configuration information of the first signal, wherein the configuration information comprises a time-frequency resource set occupied by the first signal; the target signal is used to trigger the first signal; the first identity is a C-RNTI, the second identity is a C-RNTI and the third identity is an RNTI different from the first identity; the first time window is related to a time domain resource occupied by the target signal.

For one embodiment, the first transceiver 1101 receives a third signal after the first signature sequence is transmitted and before the target signal is transmitted; the first signature sequence is used to trigger the third signal, which is indicative of the third identity.

For one embodiment, the first transceiver 1101 receives a first information block, the first information block being used to indicate M1 candidate reference signal resources; and the first transceiver 1101 selects the first reference signal resource from the M1 candidate reference signal resources; the first reference signal resource is one of the M1 candidate reference signal resources; the sender of the first information block is the first cell; the M1 is a positive integer greater than 1.

For one embodiment, the first transceiver 1101 receives a second information block, the second information block indicating a target set of reference signal resources; and the first transceiver measures a target reference signal resource group, the channel quality of all reference signal resources in the target reference signal resource group is lower than a first threshold, and a first counter is increased by 1; the target reference signal resource group comprises at least one reference signal resource, and the first characteristic sequence is triggered to be sent as the first counter reaches a first trigger value.

For one embodiment, the first transceiver 1101 includes at least the first 6 of the antenna 452, the receiver/transmitter 454, the multi-antenna receive processor 458, the multi-antenna transmit processor 457, the receive processor 456, the transmit processor 468, and the controller/processor 459 of embodiment 4.

For one embodiment, the first receiver 1102 comprises at least the first 4 of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller/processor 459 of embodiment 4.

Example 12

Embodiment 12 illustrates a block diagram of the structure in a second node, as shown in fig. 12. In fig. 12, a second node 1200 comprises a second transceiver 1201 and a first transmitter 1202.

A second transceiver 1201 receiving the first signature sequence and a target signal;

a first transmitter 1202 that transmits first signaling in a first time window; and transmitting the first signal;

in embodiment 12, the channel occupied by the first signature sequence includes a random access related channel, and the transmission timing of the target signal is related to the transmission timing of the first signature sequence; the target signal comprises a first identification, the first signal comprises the first identification and a second identification, and CRC included in the first signaling is scrambled by a third identification; the first signaling comprises configuration information of the first signal, wherein the configuration information comprises a time-frequency resource set occupied by the first signal; the target signal is used to trigger the first signal; the first identity is a C-RNTI, the second identity is a C-RNTI and the third identity is an RNTI different from the first identity; the first time window is related to a time domain resource occupied by the target signal.

For one embodiment, the second transceiver 1201 transmits a third signal after the first signature sequence is received and before the target signal is received; the first signature sequence is used to trigger the third signal, which is indicative of the third identity.

For one embodiment, the second transceiver 1201 transmits a first information block, which is used to indicate M1 candidate reference signal resources; the first reference signal resource is one of the M1 candidate reference signal resources; the sender of the first information block is the first cell; the M1 is a positive integer greater than 1.

For one embodiment, the second transceiver 1201 transmits a second information block, the second information block indicating a target set of reference signal resources; the sender of the first signature sequence is a first node, the first node measures a target reference signal resource group, the channel quality of all reference signal resources in the target reference signal resource group is lower than a first threshold, and a first counter of the first node is increased by 1; the target reference signal resource group comprises at least one reference signal resource, the first counter reaches a first trigger value, and the first characteristic sequence is triggered.

For one embodiment, the second transceiver 1201 determines that the first identity is occupied; and the second transceiver 1201 transmits a second signaling and a second signal in a second time window; a CRC included in the second signaling is scrambled by the first identity; the second signaling comprises configuration information of the second signal, wherein the configuration information comprises a time-frequency resource set occupied by the second signal; the target signal is used to trigger the second signal.

For one embodiment, the second transceiver 1201 includes at least the first 6 of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 in embodiment 4.

For one embodiment, the first transmitter 1202 includes at least the first 4 of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 of embodiment 4.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. First node and second node in this application include but not limited to cell-phone, panel computer, notebook, network card, low-power consumption equipment, eMTC equipment, NB-IoT equipment, vehicle communication equipment, vehicles, vehicle, RSU, aircraft, unmanned aerial vehicle, wireless communication equipment such as remote control plane. The base station in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a transmission and reception node TRP, a GNSS, a relay satellite, a satellite base station, an over-the-air base station, an RSU, and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A first node for use in wireless communications, comprising:

2. The first node of claim 1, wherein the first signature sequence and the target signal belong to the same MSGA message, and wherein the third identity is an MSGB-RNTI.

3. The first node of claim 1, wherein the first transceiver receives a third signal after the first signature sequence is transmitted and before the target signal is transmitted; the first signature sequence is used to trigger the third signal, which is indicative of the third identity.

4. The first node according to any of claims 1 to 3, wherein the first identity is configured by a first cell, the second identity and the third identity are configured by a second cell, the first cell and the second cell being different; a first air interface resource is used for determining a first reference signal resource, and the first air interface resource comprises at least one of a time domain resource occupied by the first characteristic sequence, a frequency domain resource occupied by the first characteristic sequence and a preamble index; or, the target signal comprises a first information unit, the first information unit in the target signal is used to indicate a first reference signal resource; the first reference signal resource is maintained by the second cell.

5. The first node of claim 4, wherein the first transceiver receives a first information block, wherein the first information block is used to indicate M1 candidate reference signal resources; and the first transceiver selects the first reference signal resource from the M1 candidate reference signal resources; the first reference signal resource is one of the M1 candidate reference signal resources; the sender of the first information block is the first cell; the M1 is a positive integer greater than 1.

6. The first node of any of claims 1-5, wherein the first transceiver receives a second information block, the second information block indicating a target set of reference signal resources; and the first transceiver measures a target reference signal resource group, the channel quality of all reference signal resources in the target reference signal resource group is lower than a first threshold, and a first counter is increased by 1; the target reference signal resource group comprises at least one reference signal resource, the first counter reaches a first trigger value, and the first characteristic sequence is triggered to be sent.

7. The method in a first node according to any of claims 1-6, wherein the act of demodulating a first signal comprises attempting to recover a first MAC PDU, the first MAC PDU comprising the first identity and the second identity; and only when the first MAC PDU is recovered, judging that the random access process to which the first characteristic sequence belongs is successful.

8. A second node for use in wireless communications, comprising:

9. A method in a first node in wireless communication, comprising:

transmitting the first characteristic sequence and a target signal;

10. A method in a second node in wireless communication, comprising:

receiving a first signature sequence and a target signal;