CN113114435A

CN113114435A - Method and apparatus in a node used for wireless communication

Info

Publication number: CN113114435A
Application number: CN202010028250.1A
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: 2020-01-10
Filing date: 2020-01-10
Publication date: 2021-07-13
Anticipated expiration: 2040-01-10
Also published as: CN113114435B

Abstract

A method and apparatus in a node used for wireless communication is disclosed. The first node firstly receives a first signaling, sends a first signal in a first time-frequency resource set, then receives a second signal and sends a target signal in a target time-frequency resource set; the first signaling is used to determine the first set of time-frequency resources; a first sequence is used to generate the first signal and to determine a first identity; the air interface resource occupied by the first signal is used for determining a second identifier, and the second signal does not carry the first identifier; a first domain in the second signal is used to determine the target set of time-frequency resources; the K1 first-class time-frequency resource sets are orthogonal to the target time-frequency resource set; both the first signal and the target signal are used to initiate random access. The target time frequency resource set is determined through the first domain, so that the random access process is optimized, and the system performance is improved.

Description

Method and apparatus in a node used for wireless communication

Technical Field

The present invention relates to a transmission method and apparatus in a wireless communication system, and in particular, to a transmission method and apparatus in a Non-Terrestrial network (NTN) in wireless communication.

Background

In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In order to meet different performance requirements of multiple application scenarios, a New air interface technology (NR, New Radio) (or 5G) is determined to be studied in 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 guilds, and standardization Work on NR starts after passing through WI (Work Item) of the New air interface technology (NR, New Radio) in 3GPP RAN #75 guilds.

In order to be able to adapt to various application scenarios and meet different requirements, the 3GPP RAN #75 time congress also passed a Non-Terrestrial Networks (NTN) research project under NR, which started in version R15. The decision to start the study of solutions in NTN networks was made on 3GPP RAN #79 full meeting, and then WI was initiated to standardize the related art in R16 or R17 release.

Disclosure of Invention

In the conventional LTE (Long-Term Evolution) and 5G systems, due to the requirement of load adjustment, when the number of users accessing the base station side is large and the base station cannot respond one by one, the base station may indicate a BI (Backoff Indicator) in an RAR (Random Access Response). When a UE (User Equipment) initiating Random Access determines that a Preamble (Preamble) sent is not responded by a base station in a RAR window, the UE may determine a waiting time according to a value indicated by a BI, and then sends a PRACH (Physical Random Access Channel) again. Meanwhile, no matter the PRACH is sent for the first time or retransmitted, the UE can only occupy the time-frequency resource configured by the base station for the PRACH, and the time-frequency resource configured by the base station for the PRACH is shared by all UEs.

In the NTN system, because the transmission delay between the base station and the UE is relatively large, after the BI indication reaches the UE, even if the UE waits for the backoff time, the UE still needs to wait for re-initiating the random access on the PRACH resource configured by the next base station, which may make it more difficult to successfully obtain the access. In view of the above, the present application provides a solution. It should be noted that, in the above description of the problem, the NTN scenario is only an example of an application scenario of the solution provided in the present application; the method and the device are also applicable to the scenes such as the ground network, and achieve the technical effect similar to the NTN scene. Similarly, the present application is also applicable to scenarios where there is a network of UAVs (Unmanned Aerial vehicles), or internet of things devices, for example, to achieve technical effects in NTN-like scenarios. Furthermore, employing a unified solution for different scenarios (including but not limited to NTN scenarios and ground network scenarios) also helps to reduce hardware complexity and cost.

It should be noted that, without conflict, the embodiments and features in the embodiments in the first node of the present application may be applied to the second node and vice versa. Further, the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict.

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

receiving a first signaling;

transmitting a first signal in a first set of time-frequency resources;

receiving a second signal;

transmitting a target signal in a target time frequency resource set;

wherein the first signaling is used to determine K1 first class sets of time-frequency resources, the first set of time-frequency resources being one of the K1 first class sets of time-frequency resources, the K1 being a positive integer greater than 1; a first sequence is used to generate the first signal, the first sequence being used to determine a first identity; the air interface resource occupied by the first signal is used for determining a second identifier, the second signal carries the second identifier, and the second signal does not carry the first identifier; the second signal carrying a first field, the first field being used to determine the target set of time-frequency resources; any one of the K1 first-class time-frequency resource sets is orthogonal to the target time-frequency resource set; both the first signal and the target signal are used to initiate random access.

As an example, the above method has the benefits of: for the NTN system, when the PRACH sent by the first node is not fed back in the RAR issued by the base station, a possible situation is that the base station detects a terminal stronger than the first node signal on the corresponding PRACH resource, and the base station can perceive that there are random access requests of other UEs (including the first node) on the PRACH resource but cannot solve the random access requests, in this case, the base station additionally configures some resources for PRACH retransmission for the first node through the first domain in the RAR, so as to increase the probability of successful random access of the first node.

As an example, another benefit of the above method is: the target time-frequency resource set and the K1 first-class time-frequency resource sets are orthogonal, namely, resources indicated in the RAR are resources except for traditional PRACH resources, so that collision between the retransmitted PRACH and the initially transmitted PRACH is avoided.

As an example, a further benefit of the above method is that: the target time frequency resource set is only configured to terminals which initiate random access in the first time frequency resource set and are unsuccessful, the probability of collision is further reduced, and the method is more flexible from the base station side.

According to an aspect of the application, the first domain is used to determine K2 candidate sets of time-frequency resources, the target set of time-frequency resources is one of the K2 candidate sets of time-frequency resources, the K2 is a positive integer greater than 1.

As an example, the above method has the benefits of: and the base station indicates a plurality of time-frequency resources for the PRACH retransmission of the first node, so that the collision concept is further reduced, and the random access performance is improved.

According to one aspect of the application, the method comprises:

receiving first information;

wherein the first information is used to determine that the second signal includes the first domain.

As an example, the above method has the benefits of: whether the second signal includes the first domain is configurable, thereby improving compatibility of the system.

According to an aspect of the present application, the frequency domain resources occupied by the target time frequency resource set and the frequency domain resources occupied by any one of the K1 first-class time frequency resource sets are orthogonal in the frequency domain.

As an example, the above method has the benefits of: the base station may additionally configure a block of frequency domain resources for the retransmission of the PRACH, so as to improve the spectrum efficiency and the random access performance.

According to an aspect of the application, the second signal comprises a second domain, the second domain being used to indicate that a target domain comprised by the second signal is interpreted by the first node as the first domain; the target domain is a fallback indication.

As an example, the above method has the benefits of: and the BI part in the RAR is adopted to realize the function of the first domain, and no additional signaling overhead is added.

According to one aspect of the application, the first node has a first capability, and the target domain is interpretable as the first domain.

As an example, the above method has the benefits of: the scheme is only for the UE with the Pre-compensation capability, and the UE with the Pre-compensation capability can estimate the TA by itself without a longer leader sequence to cope with the TA, so that the PRACH retransmission cannot be carried out by occupying too much time-frequency resources, and the scheme is more suitable for the scheme provided by the application.

According to one aspect of the application, the method comprises:

receiving second information;

wherein the second information relates to a first length of time, the target domain being interpretable as the first domain when the first length of time is greater than a first threshold.

As an example, the above method has the benefits of: the above scheme is effective only when the transmission delay is large, i.e. the base station is far away from the ground, so as to deal with the problem of PRACH collision caused by too large transmission delay.

According to one aspect of the application, the method comprises:

receiving a second signaling;

wherein the second signaling is used to indicate M2 sets of candidate time-frequency resources, the M2 being a positive integer greater than the K2; the first domain is used to indicate the K2 sets of candidate time-frequency resources from the M2 sets of candidate time-frequency resources.

As an example, the above method has the benefits of: the M2 candidate time frequency resource sets are configured semi-statically through second signaling, and then dynamic indication is carried out from the candidate time frequency resource sets through the first domain, so that signaling overhead is reduced, and spectrum efficiency is improved.

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

sending a first signaling;

receiving a first signal in a first set of time-frequency resources;

transmitting a second signal;

receiving a target signal in a target time-frequency resource set;

According to one aspect of the application, the second node determines that there are random access signals transmitted by a plurality of terminals in the first set of time-frequency resources, and the transmitter of the first signal is one of the plurality of terminals.

According to one aspect of the application, the method comprises:

sending first information;

According to one aspect of the application, the method comprises:

sending the second information;

According to one aspect of the application, the method comprises:

sending a second signaling;

The application discloses a first node for wireless communication, characterized by comprising:

a first receiver receiving a first signaling;

a first transmitter to transmit a first signal in a first set of time-frequency resources;

a second receiver receiving a second signal;

a second transmitter for transmitting a target signal in a target time-frequency resource set;

The application discloses a second node for wireless communication, characterized by comprising:

a third transmitter for transmitting the first signaling;

a third receiver that receives the first signal in the first set of time-frequency resources;

a fourth transmitter that transmits the second signal;

a fourth receiver for receiving the target signal in the target time-frequency resource set;

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

for a large-delay system, when a base station can sense that random access requests of multiple UEs exist on one PRACH resource, the base station additionally configures some resources for PRACH retransmission for the first node through a first domain in the RAR, so as to increase the probability of successful random access of the first node;

the above-mentioned additionally configured resources, i.e. the target set of time-frequency resources, are orthogonal to the K1 sets of first-class time-frequency resources, thus avoiding collisions between the retransmitted PRACH and the initially transmitted PRACH; the target time frequency resource set is only configured to terminals which initiate random access in the first time frequency resource set and are unsuccessful, so that the concept of collision is further reduced, and the base station side is more flexible;

continuing to implement the above function using the BI part of the RAR to reduce signaling overhead;

whether the above method is turned on is related to the UE capabilities and the height of the base station, further increasing the flexibility.

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 schematic diagram of a target set of time-frequency resources according to an embodiment of the present application;

FIG. 7 is a diagram illustrating K1 first-class sets of time-frequency resources according to an embodiment of the present application;

FIG. 8 shows a schematic diagram of K2 sets of candidate time-frequency resources according to an embodiment of the present application;

FIG. 9 shows a schematic diagram of a second signal according to an embodiment of the present application;

FIG. 10 shows a schematic diagram of timing relationships according to one embodiment of the present application;

FIG. 11 shows a block diagram of a structure used in a first node according to an embodiment of the present application;

fig. 12 shows a block diagram of a structure used in a second node 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 receives a first signaling in step 101; transmitting a first signal in a first set of time-frequency resources in step 102; receiving a second signal in step 103; in step 104 a target signal is transmitted in a target set of time-frequency resources.

In embodiment 1, the first signaling is used to determine K1 first-class sets of time-frequency resources, where the first-class set of time-frequency resources is one of the K1 first-class sets of time-frequency resources, and the K1 is a positive integer greater than 1; a first sequence is used to generate the first signal, the first sequence being used to determine a first identity; the air interface resource occupied by the first signal is used for determining a second identifier, the second signal carries the second identifier, and the second signal does not carry the first identifier; the second signal carrying a first field, the first field being used to determine the target set of time-frequency resources; any one of the K1 first-class time-frequency resource sets is orthogonal to the target time-frequency resource set; both the first signal and the target signal are used to initiate random access.

As an embodiment, the first Signaling is Higher Layer Signaling (high Layer Signaling).

As an embodiment, the first signaling is RRC (Radio Resource Control) signaling.

As an embodiment, the first signaling is broadcast signaling.

As an embodiment, the first signaling is a SIB (System Information Block).

As an embodiment, the first signaling comprises RACH-ConfigCommon in TS 38.331.

As an embodiment, the first signaling comprises RACH-ConfigDedicated in TS 38.331.

As an embodiment, the first signaling comprises RACH-ConfigGeneric in TS 38.331.

As an embodiment, the first set of time-frequency resources includes a positive integer number of REs (Resource Elements).

As an embodiment, the first set of time frequency resources comprises a positive integer number of multicarrier symbols in the time domain and the first set of time frequency resources comprises a positive integer number of subcarriers in the frequency domain.

As an embodiment, any one of the K1 first-class sets of time-frequency resources is reserved for transmission of PRACH.

As an embodiment, any one of the K1 first-class sets of time-frequency resources includes a positive integer number of REs.

As an embodiment, any one of the K1 first-class sets of time-frequency resources includes a positive integer number of multicarrier symbols in the time domain and includes a positive integer number of subcarriers in the frequency domain.

As an embodiment, the first node determines the first set of time-frequency resources by itself from the K1 sets of first-class time-frequency resources.

As an embodiment, the first set of time-frequency resources is the first set of time-frequency resources of the first type in the time domain after the first node in the K1 sets of time-frequency resources of the first type obtains synchronization from the sender of the first signaling.

As one embodiment, the physical layer channel carrying the first signal is a PRACH.

As one embodiment, the first signal is a Preamble.

As an embodiment, the first sequence is a ZC (Zadoff-Chu) sequence.

As an embodiment, the first sequence is a preamble sequence.

As an embodiment, the air interface resource occupied by the first signal includes a time domain resource occupied by the first signal.

As an embodiment, the air interface resource occupied by the first signal includes a frequency domain resource occupied by the first signal.

As an embodiment, the air interface resource occupied by the first signal includes a code domain resource occupied by the first signal.

As an embodiment, the air interface resource occupied by the first signal includes REs occupied by the first signal.

As an embodiment, the determining, by the air interface resource occupied by the first signal in the sentence, that the meaning of the second identifier includes: the time domain position of the time domain resource occupied by the first signal is used to determine the second identity.

As an embodiment, the determining, by the air interface resource occupied by the first signal in the sentence, that the meaning of the second identifier includes: the frequency domain position of the frequency domain resource occupied by the first signal is used to determine the second identity.

As an embodiment, the determining, by the air interface resource occupied by the first signal in the sentence, that the meaning of the second identifier includes: an index of a sequence generating the first signal is used to determine the second identity.

As an embodiment, the first identifier is a Preamble Index (Preamble Index).

As an embodiment, the first identity is PREAMBLE _ INDEX in TS 38.321.

As an embodiment, the second Identifier is RA-RNTI (Random Access Radio Network Temporary Identifier).

As an embodiment, the above sentence, wherein the first sequence is used to determine the meaning of the first identifier, comprises: the Preamble selected by the first node is used to determine a Preamble Index.

As an embodiment, the second signal is a RAR.

As an example, the second signal is Msg 2.

As an embodiment, the Physical layer Channel carrying the second signal includes a PDSCH (Physical Downlink Shared Channel).

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

As an embodiment, the above phrase that the second signal carries the meaning of the second identifier includes: the second signal comprises a first sub-signal and a second sub-signal, a physical layer channel carrying the first sub-signal is a PDCCH, a physical layer channel carrying the second sub-signal is a PDSCH, and CRC carried by the first sub-signal is scrambled by the second identifier.

As an embodiment, the above phrase that the second signal does not carry the first identifier means that: the second signal does not carry any RAPID Access Preamble ID.

As an embodiment, the above phrase that the second signal does not carry the first identifier means that: the second signal carries a RAPID, and the RAPID is different from the first identifier.

As an embodiment, the above phrase that the second signal does not carry the first identifier means that: the second signal carries a plurality of RAPID, and any one of the plurality of RAPID is different from the first identifier.

As an embodiment, the above phrase that the second signal carries the meaning of the second identifier includes: a CRC included in a PDCCH scheduling the second signal is scrambled by the second identity.

As one embodiment, the first signal is used to initiate random access.

As one embodiment, the second signal is a Response (Response) to the first signal.

As an embodiment, the physical layer channel carrying the target signal is a PRACH.

As an embodiment, the target signal is used to re-initiate random access.

As an embodiment, the first identifier is different from the second identifier, the first node determines that the random access initiated by the first signal fails, and the first node re-initiates the random access.

As an embodiment, the first field is used to indicate the K2 sets of candidate time-frequency resources.

As an embodiment, the first field is a field in a MAC (Medium Access Control) sub-header.

As an embodiment, the second signal is a MAC PDU (Protocol Data Unit).

As an embodiment, the first field belongs to one MAC sub pdu (sub protocol data unit).

As an embodiment, the target set of time-frequency resources comprises a positive integer number of REs.

As an embodiment, the target set of time-frequency resources comprises a positive integer number of multicarrier symbols in the time domain and the first set of time-frequency resources comprises a positive integer number of subcarriers in the frequency domain.

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

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

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

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

As an embodiment, the first domain is used to indicate the target set of time-frequency resources.

As an example, the first Field is a Header Field (Header Field) in a MAC Header.

As an embodiment, the first signal and the target signal use the same transmission power value.

As an embodiment, the first node in the present application is in an RRC _ IDLE state from when the first node starts to transmit the first signal to when the target signal is transmitted.

As an embodiment, the first node in this application is in an uplink out-of-step state from when the first node starts to transmit the first signal to when the target signal is transmitted.

As an embodiment, the first signal includes a Preamble in a four-step random access.

As an embodiment, the first signal comprises Msg 1 (message 1) in a four-step RACH.

As one embodiment, the second signal comprises Msg 2 (message 2) in a four-step RACH

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 one or more UEs (User Equipment) 201, NG-RANs (next generation radio access networks) 202, EPCs (Evolved Packet cores)/5G-CNs (5G-Core networks) 210, HSS (Home Subscriber Server) 220, and internet services 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-CN 210 through the S1/NG interface. The EPC/5G-CN 210 includes an MME (Mobility Management entity)/AMF (Authentication Management Domain)/UPF (User Plane Function) 211, other MMEs/AMFs/UPFs 214, an S-GW (Service Gateway) 212, and a 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 gNB203 corresponds to the second node in this application.

As an embodiment, the air interface between the UE201 and the gNB203 is a Uu interface.

As an embodiment, the radio link between the UE201 and the gNB203 is a cellular link.

As an example, the wireless Link between the gNB203 and the ground station is a Feeder Link.

As an embodiment, the first node in this application is a terminal within the coverage of the gNB 203.

As an embodiment, the UE201 supports transmission in a non-terrestrial network (NTN).

As an embodiment, the UE201 supports transmission in a large delay network.

As one embodiment, the gNB203 supports transmissions over a non-terrestrial network (NTN).

As an embodiment, the gNB203 supports transmission in a large delay network.

As an example, the gNB203 is connected to the core network through a ground station.

As an embodiment, the first node has GPS (Global Positioning System) capability.

As an example, the first node has GNSS (Global Navigation Satellite System) capability.

As an embodiment, the first node has BDS (BeiDou Navigation Satellite System) capability.

As an example, the first node has GALILEO (GALILEO Satellite Navigation System) capability.

As one embodiment, the first node has a Capability of Pre-Compensation (Pre-Compensation).

For one embodiment, the first node has uplink synchronization pre-compensation capability.

For one embodiment, the first node has the capability of estimating an uplink TA by itself.

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. The 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 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.

For one embodiment, the first signaling is generated in the MAC352 or the MAC 302.

As an embodiment, the first signaling is generated at the RRC 306.

For one embodiment, the first signal is generated from the PHY301 or the PHY 351.

For one embodiment, the first signal is generated at the MAC352 or the MAC 302.

For one embodiment, the second signal is generated from the PHY301 or the PHY 351.

For one embodiment, the second signal is generated at the MAC352 or the MAC 302.

For one embodiment, the target signal is generated from the PHY301 or the PHY 351.

For one embodiment, the target signal is generated at the MAC352 or the MAC 302.

For one embodiment, the first information is generated in the PHY301 or the PHY 351.

For one embodiment, the first information is generated in the MAC352 or the MAC 302.

As an embodiment, the first information is generated at the RRC 306.

For one embodiment, the second signaling is generated from the PHY301 or the PHY 351.

For one embodiment, the second signaling is generated in the MAC352 or the MAC 302.

As an embodiment, the second signaling is generated at the RRC 306.

For one embodiment, the second information is generated in the PHY301 or the PHY 351.

For one embodiment, the second information is generated in the MAC352 or the MAC 302.

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

As an embodiment, the second node in this application sends a positioning signal, and the first node in this application receives a positioning signal.

As a sub-embodiment of this embodiment, it is SMLC (Serving Mobile Location center) that triggers the sending of the positioning signal.

As a sub-embodiment of this embodiment, it is E-SMLC (Evolved Serving Mobile Location center) that triggers the sending of the positioning signal.

As a sub-embodiment of this embodiment, it is SLP (SUPL Location Platform) that triggers the sending of the Location signal; wherein SUPL is Secure User Plane Location.

As a sub-embodiment of this embodiment, it is LMU (Location Measurement Unit) that triggers the sending of the Location signal.

As a sub-embodiment of this embodiment, the operation triggering the sending of the positioning signal is from the core network.

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: receiving a first signaling, sending a first signal in a first time-frequency resource set, receiving a second signal, and sending a target signal in a target time-frequency resource set; the first signaling is used to determine K1 sets of first class time-frequency resources, the first set of time-frequency resources being one of the K1 sets of first class time-frequency resources, the K1 being a positive integer greater than 1; a first sequence is used to generate the first signal, the first sequence being used to determine a first identity; the air interface resource occupied by the first signal is used for determining a second identifier, the second signal carries the second identifier, and the second signal does not carry the first identifier; the second signal carrying a first field, the first field being used to determine the target set of time-frequency resources; any one of the K1 first-class time-frequency resource sets is orthogonal to the target time-frequency resource set; both the first signal and the target signal are used to initiate random access.

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: receiving a first signaling, sending a first signal in a first time-frequency resource set, receiving a second signal, and sending a target signal in a target time-frequency resource set; the first signaling is used to determine K1 sets of first class time-frequency resources, the first set of time-frequency resources being one of the K1 sets of first class time-frequency resources, the K1 being a positive integer greater than 1; a first sequence is used to generate the first signal, the first sequence being used to determine a first identity; the air interface resource occupied by the first signal is used for determining a second identifier, the second signal carries the second identifier, and the second signal does not carry the first identifier; the second signal carrying a first field, the first field being used to determine the target set of time-frequency resources; any one of the K1 first-class time-frequency resource sets is orthogonal to the target time-frequency resource set; both the first signal and the target signal are used to initiate random access.

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: sending a first signaling, receiving a first signal in a first time-frequency resource set, sending a second signal, and receiving a target signal in a target time-frequency resource set; the first signaling is used to determine K1 sets of first class time-frequency resources, the first set of time-frequency resources being one of the K1 sets of first class time-frequency resources, the K1 being a positive integer greater than 1; a first sequence is used to generate the first signal, the first sequence being used to determine a first identity; the air interface resource occupied by the first signal is used for determining a second identifier, the second signal carries the second identifier, and the second signal does not carry the first identifier; the second signal carrying a first field, the first field being used to determine the target set of time-frequency resources; any one of the K1 first-class time-frequency resource sets is orthogonal to the target time-frequency resource set; both the first signal and the target signal are used to initiate random access.

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: sending a first signaling, receiving a first signal in a first time-frequency resource set, sending a second signal, and receiving a target signal in a target time-frequency resource set; the first signaling is used to determine K1 sets of first class time-frequency resources, the first set of time-frequency resources being one of the K1 sets of first class time-frequency resources, the K1 being a positive integer greater than 1; a first sequence is used to generate the first signal, the first sequence being used to determine a first identity; the air interface resource occupied by the first signal is used for determining a second identifier, the second signal carries the second identifier, and the second signal does not carry the first identifier; the second signal carrying a first field, the first field being used to determine the target set of time-frequency resources; any one of the K1 first-class time-frequency resource sets is orthogonal to the target time-frequency resource set; both the first signal and the target signal are used to initiate random access.

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 ground terminal.

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

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

For one embodiment, the first communication device 450 is an aircraft.

As an example, the first communication device 450 is a surface vehicle.

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

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

As an example, the second communication device 410 is a GEO (Geostationary Earth orbit) satellite.

As an example, the second communication device 410 is a MEO (Medium Earth orbit) satellite.

As an example, the second communication device 410 is a LEO (Low Earth Orbit) satellite.

As an example, the second communication device 410 is a HEO (high elliptic orbit) satellite.

As an example, the second communication device 410 is an Airborne Platform.

As an example, the second communication device 410 is a HAPS (High Altitude Platform Station)

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 first signaling; 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 first signaling.

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 configured to send a first signal in a first set of time-frequency resources; at least the first four of the antennas 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller/processor 475 are configured to receive a first signal in a first set of time-frequency 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 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 used to send a second signal.

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 configured to send a target signal in a target set of time-frequency resources; at least the first four of the antennas 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller/processor 475 are configured to receive a target signal in a target set of time-frequency 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 first 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 the first information.

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 second signaling; 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 second signaling.

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. The step identified in block F0 is optional.

For theFirst node U1Receiving second information in step S10; receiving a second signaling in step S11; receiving a first signaling in step S12; the first information is received in step S13(ii) a Transmitting a first signal in a first set of time-frequency resources in step S14; receiving a second signal in step S15; in step S16, the target signal is transmitted in the target set of time-frequency resources.

For theSecond node N2Transmitting the second information in step S20; transmitting a second signaling in step S21; transmitting a first signaling in step S22; transmitting the first information in step S23; receiving a first signal in a first set of time-frequency resources in step S24; transmitting a second signal in step S25; a target signal is received in a target set of time-frequency resources in step S26.

In embodiment 5, the first signaling is used to determine K1 sets of first class time-frequency resources, where the first set of time-frequency resources is one of the K1 sets of first class time-frequency resources, and the K1 is a positive integer greater than 1; a first sequence is used to generate the first signal, the first sequence being used to determine a first identity; the air interface resource occupied by the first signal is used for determining a second identifier, the second signal carries the second identifier, and the second signal does not carry the first identifier; the second signal carrying a first field, the first field being used to determine the target set of time-frequency resources; any one of the K1 first-class time-frequency resource sets is orthogonal to the target time-frequency resource set; both the first signal and the target signal are used to initiate random access; the first information is used to determine that the second signal includes the first domain; the second information relates to a first length of time, when the first length of time is greater than a first threshold, the target domain can be interpreted as the first domain; the second signaling is used to indicate M2 sets of candidate time-frequency resources, the M2 being a positive integer greater than the K2; the first domain is used to indicate the K2 sets of candidate time-frequency resources from the M2 sets of candidate time-frequency resources.

As an embodiment, the first domain is used to determine K2 candidate sets of time-frequency resources, the target set of time-frequency resources is one of the K2 candidate sets of time-frequency resources, the K2 is a positive integer greater than 1.

As a sub-embodiment of this embodiment, the first node U1 determines a candidate set of time-frequency resources from the K2 candidate sets of time-frequency resources as the target set of time-frequency resources by itself.

As a sub-embodiment of this embodiment, any one of the K2 candidate sets of time-frequency resources includes a positive integer number of REs.

As a sub-embodiment of this embodiment, any one of the K2 candidate sets of time-frequency resources includes a positive integer number of multicarrier symbols in the time domain and includes a positive integer number of subcarriers in the frequency domain.

As an embodiment, the first information is carried by RRC signaling.

As one embodiment, the first information is broadcast information.

As an embodiment, the first information is cell-common.

As an embodiment, the first information is used to determine that the first Field is included in the second signal and that a BI Header Field (Header Field) is not included.

As an embodiment, the first information is used to indicate that the first domain in the second signal is used to determine the target set of time-frequency resources.

As an embodiment, the frequency domain resources occupied by the target time frequency resource set and the frequency domain resources occupied by any one of the K1 first-class time frequency resource sets are orthogonal in the frequency domain.

As a sub-embodiment of this embodiment, the above sentence "the frequency domain resource occupied by the target time frequency resource set and the frequency domain resource occupied by any one of the K1 first-class time frequency resource sets are orthogonal in the frequency domain" means that: and one subcarrier does not belong to the frequency domain resource occupied by the target time frequency resource set and the frequency domain resource occupied by any one first-class time frequency resource set in the K1 first-class time frequency resource sets.

As a sub-embodiment of this embodiment, the above sentence "the frequency domain resource occupied by the target time frequency resource set and the frequency domain resource occupied by any one of the K1 first-class time frequency resource sets are orthogonal in the frequency domain" means that: the frequency domain resources occupied by the K1 first-class time frequency resource sets belong to a first sub-frequency band, the frequency domain resources occupied by the target time frequency resource sets belong to a second sub-frequency band, and the first sub-frequency band and the second sub-frequency band are orthogonal in the frequency domain.

As one embodiment, the second signal includes a second domain used to indicate that a target domain included by the second signal is interpreted by the first node U1 as the first domain; the target domain is a fallback indication.

As a sub-embodiment of this embodiment, the second field is the first of two bits labeled "R" in the E/T/R/R/BI MAC header in TS 38.321.

As a sub-embodiment of this embodiment, the second field is the next bit of the two bits labeled "R" in the E/T/R/R/BI MAC header in TS 38.321.

As a sub-embodiment of this embodiment, the second field is two bits labeled "R" in the E/T/R/R/BI MAC header in TS 38.321.

As a sub-embodiment of this embodiment, the target field is 4 bits labeled "BI" in the E/T/R/R/BI MAC header in TS 38.321.

As one embodiment, the first node U1 has a first capability, and the target domain can be interpreted as the first domain.

As a sub-embodiment of this embodiment, the first capability is a positioning capability, and the first node having the first capability means that the first node has a positioning capability.

As a sub-embodiment of this embodiment, the first Capability is a Pre-compensation Capability (Pre-compensation Capability), and the first node U1 having the first Capability means that the first node U1 has the Pre-compensation Capability.

As a sub-embodiment of this embodiment, the first node U1 having the first capability means that the first node U1 is capable of estimating the TA between the first node U1 and the second node N2 by itself.

As a sub-embodiment of this embodiment, the first node U1 having the first capability means that the first node U1 is capable of estimating the RTT between the first node U1 and the second node N2 by itself.

As a sub-embodiment of this embodiment, when the first node U1 has the first capability, the target domain is interpreted as the first domain.

As a sub-embodiment of this embodiment, when the first node U1 does not have the first capability, the target domain is interpreted as a BI.

As one embodiment, the unit of the first length of time is milliseconds.

As an embodiment, the first length of time is equal to a duration of a positive integer number of time slots.

As one embodiment, the first length of time is K_offset。

As an example, the meaning of the second information related to the first time length in the above sentence includes: the second information is used to indicate the first length of time.

As an example, the meaning of the second information related to the first time length in the above sentence includes: the second information is used to determine a type of the second node N2, the type of the second node N2 is used to determine the first length of time.

As a sub-embodiment of this embodiment, the type of the second node N2 is one of GEO satellite, MEO satellite, LEO satellite, HEO satellite, Airborne Platform, or HAPS.

As an example, the meaning of the second information related to the first time length in the above sentence includes: the second information is used to determine an altitude of the second node N2, the altitude of the second node N2 is used to determine the first length of time.

As a sub-embodiment of this embodiment, the height of the second node N2 is the distance between the second node N2 and the near point.

As a sub-embodiment of this embodiment, the height of the second node N2 is the distance between the second node N2 and the horizontal plane.

For one embodiment, the first length of time is equal to twice the propagation delay of the second node N2 to the near site.

As an example, said first length of time is equal to twice the propagation delay of said second node N2 to the horizontal plane.

For one embodiment, the first length of time is equal to twice the transmission delay of the second node N2 to the first node U1.

For an embodiment, the first Time length is equal to RTT (Round Trip Time) from the first node U1 to the second node N2.

As one embodiment, the first threshold is fixed.

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

As an embodiment, the first threshold is configured by higher layer signaling.

As one embodiment, the unit of the first threshold is milliseconds.

As an embodiment, the first threshold is equal to the duration of a positive integer number of consecutive time slots.

As an embodiment, the second signaling is RRC signaling.

As an embodiment, the second signaling is higher layer signaling.

As an embodiment, the second signaling is broadcast signaling.

As an embodiment, any one of the M2 candidate sets of time-frequency resources includes a positive integer number of REs.

As an embodiment, any one of the M2 candidate sets of time-frequency resources includes a positive integer number of multicarrier symbols in the time domain and a positive integer number of subcarriers in the frequency domain.

As an embodiment, the frequency domain resources occupied by the K1 first-class time-frequency resource sets belong to a first subcarrier set, the frequency domain resources occupied by the M2 candidate time-frequency resource sets belong to a second subcarrier set, and the first subcarrier set and the second subcarrier set are orthogonal in the frequency domain.

As a sub-embodiment of this embodiment, the phrase that the first set of subcarriers and the second set of subcarriers are orthogonal in the frequency domain means that: there is not one subcarrier belonging to both the first set of subcarriers and the second set of subcarriers.

As a sub-embodiment of this embodiment, the first set of subcarriers comprises a plurality of subcarriers.

As a sub-embodiment of this embodiment, the second set of subcarriers comprises a plurality of subcarriers.

As an embodiment, the multicarrier symbol in this application is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

As an embodiment, the multicarrier symbol in this application is an SC-FDMA (Single-Carrier Frequency Division Multiple Access) symbol.

As an example, the multicarrier symbol in this application is an FBMC (Filter Bank Multi Carrier) symbol.

As an embodiment, the multicarrier symbol in this application is an OFDM symbol including a CP (Cyclic Prefix).

As an embodiment, the multi-carrier symbol in this application is a DFT-s-OFDM (Discrete Fourier Transform spread Orthogonal Frequency Division Multiplexing) symbol including a CP.

As an embodiment, the second node N2 determines that there are multiple terminals transmitting random access signals in the first set of time-frequency resources, the first node U1 being one of the multiple terminals.

As a sub-embodiment of this embodiment, the second node N2 determines that there are multiple terminals transmitting random access signals in the first set of time-frequency resources through coherent detection.

As a sub-embodiment of this embodiment, the second node N2 determines that there are multiple terminals transmitting random access signals in the first set of time-frequency resources through sequence detection.

As a sub-embodiment of this embodiment, the second node N2 determines that there are multiple terminals transmitting random access signals in the first set of time-frequency resources through energy detection.

As an embodiment, the second signal carries a third identifier, and the third identifier is used for feeding back terminals other than the first node U1 in the plurality of terminals.

Example 6

Embodiment 6 illustrates a schematic diagram of a target time-frequency resource set, as shown in fig. 6. In fig. 6, the target set of time-frequency resources is one of K2 candidate sets of time-frequency resources, the K2 is a positive integer greater than 1; as shown, the K2 candidate sets of time-frequency resources all belong to a given time window in the time domain, and the K2 candidate sets of time-frequency resources are orthogonal in the frequency domain.

As an embodiment, the first node determines the target set of time-frequency resources from the K2 candidate sets of time-frequency resources by itself.

As an embodiment, the identification of the first node is used to determine the target set of time-frequency resources from the K2 sets of candidate time-frequency resources.

As an embodiment, a Serving-temporal Mobile Subscriber Identity (Temporary Mobile Subscriber Identity) of the first node is used to determine the target set of time-frequency resources from the K2 sets of candidate time-frequency resources.

As an embodiment, an IMEI (International Mobile Equipment Identity) of the first node is used to determine the target set of time-frequency resources from the K2 candidate sets of time-frequency resources.

As an embodiment, the given time window is one time slot.

As an embodiment, the given time window is one subframe.

As an embodiment, the given time window comprises a plurality of consecutive time slots.

Example 7

Embodiment 7 illustrates a schematic diagram of K1 sets of first-class time-frequency resources; as shown in fig. 7. In fig. 7, the first set of time-frequency resources is one of the K1 sets of first-type time-frequency resources.

As an embodiment, any two first-class time-frequency resource sets of the K1 first-class time-frequency resource sets are orthogonal in the time domain.

As an embodiment, the first set of time-frequency resources is the earliest set of time-frequency resources of the K1 first sets of time-frequency resources.

As an embodiment, the first time-frequency resource set is a first-class time-frequency resource set located in the earliest time domain after the PRACH resource configuration is acquired by the first node, among the K1 first-class time-frequency resource sets.

Example 8

Embodiment 8 illustrates a schematic diagram of K2 candidate sets of time-frequency resources according to the present application; as shown in fig. 8. In fig. 8, the K2 candidate time-frequency resource sets respectively belong to a plurality of different frequency sub-bands, and the K1 candidate time-frequency resource sets in this application are K1 candidate time-frequency resource sets located in one frequency sub-band among the K2 candidate time-frequency resource sets.

As an embodiment, the sub-band is one Carrier (Carrier).

As an embodiment, the sub-band is one CC (Component Carrier).

As an example, the sub-band is a BWP (Bandwidth Part).

Example 9

Example 9 illustrates a schematic diagram of a second signal according to the present application; as shown in fig. 9. In fig. 9, the second signal includes various portions shown in the figure.

As an embodiment, the second field in the present application includes at least one bit in a portion of the graph that identifies a dashed box.

As an example, the first field in the present application is the BI part of the figure.

As an embodiment, the third identifier in the present application corresponds to a RAPID shown in the figure.

As an embodiment, the second signal carries a plurality of RAPID, any one of the plurality of RAPID being different from the first identity.

Example 10

Embodiment 10 illustrates a schematic diagram of the timing relationship of the present application, as shown in fig. 10. In fig. 10, the first node transmits a first signal in a first time window, receives a second signal in a second time window, and transmits a target signal in a third time window.

For one embodiment, the first time window includes one time slot.

As an embodiment, the first time window comprises a plurality of consecutive time slots.

As an example, the second time window is a RAR window.

For one embodiment, the second time window includes one time slot.

For one embodiment, the second time window includes a plurality of consecutive time slots.

For one embodiment, the third time window includes one time slot.

For one embodiment, the third time window includes a plurality of consecutive time slots.

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 receiver 1101, a first transmitter 1102, a second receiver 1103 and a second transmitter 1104.

A first receiver 1101 that receives a first signaling;

a first transmitter 1102 that transmits a first signal in a first set of time-frequency resources;

a second receiver 1103 receiving the second signal;

a second transmitter 1104 for transmitting a target signal in the target set of time-frequency resources;

in embodiment 11, the first signaling is used to determine K1 sets of first class time-frequency resources, where the first set of time-frequency resources is one of the K1 sets of first class time-frequency resources, and the K1 is a positive integer greater than 1; a first sequence is used to generate the first signal, the first sequence being used to determine a first identity; the air interface resource occupied by the first signal is used for determining a second identifier, the second signal carries the second identifier, and the second signal does not carry the first identifier; the second signal carrying a first field, the first field being used to determine the target set of time-frequency resources; any one of the K1 first-class time-frequency resource sets is orthogonal to the target time-frequency resource set; both the first signal and the target signal are used to initiate random access.

For one embodiment, the first receiver 1101 receives first information; the first information is used to determine that the second signal includes the first domain.

As one embodiment, the second signal includes a second domain used to indicate that a target domain included in the second signal is interpreted by the first node as the first domain; the target domain is a fallback indication.

As one embodiment, the first node has a first capability, and the target domain is capable of being interpreted as the first domain.

For one embodiment, the first receiver 1101 receives second information; the second information relates to a first length of time, when the first length of time is greater than a first threshold, the target domain can be interpreted as the first domain.

For one embodiment, the first receiver 1101 receives a second signaling; the second signaling is used to indicate M2 sets of candidate time-frequency resources, the M2 being a positive integer greater than the K2; the first domain is used to indicate the K2 sets of candidate time-frequency resources from the M2 sets of candidate time-frequency resources.

For one embodiment, the first receiver 1101 includes 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.

For one embodiment, the first transmitter 1102 comprises at least the first 4 of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459 of embodiment 4.

For one embodiment, the second receiver 1103 includes 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 in embodiment 4.

For one embodiment, the second transmitter 1104 comprises at least the first 4 of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, 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, the second node 1200 comprises a third transmitter 1201, a third receiver 1202, a fourth transmitter 1203 and a fourth receiver 1204.

A third transmitter 1201 that transmits the first signaling;

a third receiver 1202 that receives a first signal in a first set of time-frequency resources;

a fourth transmitter 1203 that transmits the second signal;

a fourth receiver 1204 for receiving a target signal in a set of target time-frequency resources;

in embodiment 12, the first signaling is used to determine K1 sets of first class time-frequency resources, where the first set of time-frequency resources is one of the K1 sets of first class time-frequency resources, and the K1 is a positive integer greater than 1; a first sequence is used to generate the first signal, the first sequence being used to determine a first identity; the air interface resource occupied by the first signal is used for determining a second identifier, the second signal carries the second identifier, and the second signal does not carry the first identifier; the second signal carrying a first field, the first field being used to determine the target set of time-frequency resources; any one of the K1 first-class time-frequency resource sets is orthogonal to the target time-frequency resource set; both the first signal and the target signal are used to initiate random access.

As an embodiment, the second node determines that there are random access signals transmitted by a plurality of terminals in the first set of time-frequency resources, and the transmitter of the first signal is one of the plurality of terminals.

For one embodiment, the third transmitter 1201 transmits first information; the first information is used to determine that the second signal includes the first domain.

For one embodiment, the third transmitter 1201 transmits second information; the second information relates to a first length of time, when the first length of time is greater than a first threshold, the target domain can be interpreted as the first domain.

For one embodiment, the third transmitter 1201 transmits a second signaling; the second signaling is used to indicate M2 sets of candidate time-frequency resources, the M2 being a positive integer greater than the K2; the first domain is used to indicate the K2 sets of candidate time-frequency resources from the M2 sets of candidate time-frequency resources.

For one embodiment, the third transmitter 1201 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.

For one embodiment, the third receiver 1202 includes at least the first 4 of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, and the controller/processor 475 of embodiment 4.

For one embodiment, the fourth transmitter 1203 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.

For one embodiment, the fourth receiver 1204 comprises at least the first 4 of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, 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:

a first receiver receiving a first signaling;

a second receiver receiving a second signal;

2. The first node of claim 1, wherein the first domain is used to determine K2 candidate sets of time-frequency resources, wherein the target set of time-frequency resources is one of the K2 candidate sets of time-frequency resources, and wherein K2 is a positive integer greater than 1.

3. The first node according to claim 1 or 2, characterized in that the first receiver receives first information; the first information is used to determine that the second signal includes the first domain.

4. The first node according to any of claims 1 to 3, wherein the frequency domain resources occupied by said target set of time-frequency resources are orthogonal in the frequency domain to the frequency domain resources occupied by any of said K1 sets of first type of time-frequency resources.

5. The first node of any of claims 1-4, wherein the second signal comprises a second domain, the second domain being used to indicate that a target domain comprised by the second signal is interpreted by the first node as the first domain; the target domain is a fallback indication.

6. The first node of any of claims 1-5, wherein the first node has a first capability, and wherein the target domain is interpretable as the first domain.

7. The first node according to any of claims 1 to 6, wherein the first receiver receives second information; the second information relates to a first length of time, when the first length of time is greater than a first threshold, the target domain can be interpreted as the first domain.

8. The first node according to any of claims 2 to 7, wherein the first receiver receives second signaling; the second signaling is used to indicate M2 sets of candidate time-frequency resources, the M2 being a positive integer greater than the K2; the first domain is used to indicate the K2 sets of candidate time-frequency resources from the M2 sets of candidate time-frequency resources.

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

a third transmitter for transmitting the first signaling;

a fourth transmitter that transmits the second signal;

10. The method in the second node according to claim 9, wherein the second node determines that there are random access signals transmitted by a plurality of terminals in the first set of time-frequency resources, and the transmitter of the first signal is one of the plurality of terminals.

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

receiving a first signaling;

transmitting a first signal in a first set of time-frequency resources;

receiving a second signal;

transmitting a target signal in a target time frequency resource set;

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

sending a first signaling;

receiving a first signal in a first set of time-frequency resources;

transmitting a second signal;

receiving a target signal in a target time-frequency resource set;