CN113645588A

CN113645588A - Method and device for wireless communication of secondary link

Info

Publication number: CN113645588A
Application number: CN202010346169.8A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2021-11-12

Abstract

The application discloses a method and a device for sidelink wireless communication. A first node receives Q reference signal resources, wherein Q is a positive integer greater than 1; a first node transmits a first MAC PDU on a first time-frequency resource block, wherein the first MAC PDU comprises first CSI and first information, and the first information indicates a first frequency-domain resource set; wherein measurements for a first reference signal resource, which is one of the Q reference signal resources, are used to calculate the first CSI; the first set of frequency domain resources is used to determine the first reference signal resource from the Q reference signal resources; the first set of frequency domain resources is one of L sets of candidate frequency domain resources, L being a positive integer greater than 1. The method and the device can robustly obtain the channel measurement result and improve the channel measurement accuracy.

Description

Method and device for wireless communication of secondary link

Technical Field

The present application relates to methods and apparatus in wireless communication systems, and more particularly, to methods and apparatus for supporting channel measurement feedback in sidelink wireless communication.

Background

Channel measurement feedback is a common method in cellular communication, and a receiving user obtains Channel State Information (CSI) by measuring Reference Signal (RS) resources and reports the CSI to a sending user, so that data sending can be more accurately adapted to a Channel state, and the data transmission success rate and the wireless resource utilization rate are improved.

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 various application scenarios, research on NR (New Radio over the air) technology (or fine Generation, 5G) is decided over 72 sessions of 3GPP (3rd Generation Partner Project) RAN (Radio Access Network), and standardization of NR is started over WI (Work Item) that has passed NR over 3GPP RAN #75 sessions. For the rapidly evolving V2X (Vehicle-to-event) service, the 3GPP also started to initiate standards formulation and research work under the NR framework, deciding on standardization of NR V2X DRX start WI over 3GPP RAN #83 fulcrums. Unlike LTE V2X which is dominated by broadcast services, NR V2X introduces unicast and multicast services in addition to broadcast services to support richer application scenarios.

Disclosure of Invention

The inventor finds that Channel measurement feedback is introduced in the unicast transmission of NR V2X, a Tx UE (User Equipment) sends a CSI-RS (Channel State Information-Reference Signal) in a psch (Physical Sidelink Shared Channel) to acquire Channel quality on the SL (Sidelink), and measurement of the CSI-RS by a receiving UE is used to calculate CSI of the SL and report the CSI to the sending UE. Since Resource allocation (Resource allocation) in PC-5 port transmission is different from that of Uu port, time-frequency resources instructing UE to send channel measurement report can be scheduled by base station at Uu port, the sending UE at PC-5 port cannot specify the time-frequency resource for receiving the channel measurement report sent by the UE, so the receiving UE feeds back in a time window, if the Tx UE triggers multiple channel measurement requests, where the feedback time windows of the receiving UEs overlap, considering that the channel measurement request sent by the sending UE may be lost, the time-frequency resources for the receiving UE to obtain the transmitted channel measurement report do not necessarily coincide with the order of receiving the channel measurement requests, the receiving UE sends a channel measurement report to the sending UE, and the receiving UE sends the channel measurement report to the sending UE according to the channel measurement request.

In view of the above, the present application discloses a solution. It should be noted that, in the description of the present application, only the NR V2X scenario is taken as a typical application scenario or example; the application is also applicable to other scenarios (such as relay networks, D2D (Device-to-Device) networks, cellular networks, scenarios supporting half-duplex user equipment) besides NR V2X, which face similar problems, and can also achieve technical effects similar to those in NR V2X scenarios. Furthermore, the adoption of a unified solution for different scenarios (including but not limited to NR V2X scenarios, downstream communication scenarios, etc.) also helps to reduce hardware complexity and cost. Without conflict, embodiments and features in embodiments in a first 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 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 protocols TS36 series, TS38 series, TS37 series.

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

receiving Q reference signal resources, wherein Q is a positive integer greater than 1;

transmitting a first MAC PDU on a first time-frequency resource block, the first MAC PDU comprising first CSI and first information, the first information indicating a first set of frequency-domain resources;

wherein measurements for a first reference signal resource, which is one of the Q reference signal resources, are used to calculate the first CSI; the first set of frequency domain resources is used to determine the first reference signal resource from the Q reference signal resources.

As an embodiment, the sending UE sends a plurality of channel measurement requests before receiving a channel measurement report for a first channel measurement request fed back by the receiving UE after triggering the first channel measurement request.

As a sub-embodiment of the above embodiment, the beneficial effects achieved above include: the channel measurement result can be rapidly and robustly obtained, and the channel measurement accuracy is improved.

As an embodiment, the channel measurement report fed back by the UE includes first information, where the first information indicates a first set of frequency domain resources, and the first information is used by the Tx UE to determine, from the Q reference signal resources sent, the first reference signal resource corresponding to the channel measurement report of this time.

As a sub-embodiment of the above embodiment, the beneficial effects achieved above include: and sending a channel measurement request corresponding to the channel measurement report which is definitely obtained by the UE, so that the channel measurement report can be effectively utilized, and the data transmission success rate and the wireless resource utilization rate on the PC-5 port are improved.

As an embodiment, the first set of frequency domain resources is one of L sets of candidate frequency domain resources, L being a positive integer greater than 1; the first largest set of frequency domain resources is one of the L candidate sets of frequency domain resources, any one of the L candidate sets of frequency domain resources other than the first largest set of frequency domain resources being a subset of the first largest set of frequency domain resources.

As an embodiment, all frequency domain resources occupied by the Q reference signal resources belong to the first largest set of frequency domain resources.

As an embodiment, the number of RBs (Resource blocks) included in the first largest frequency domain Resource set may be divisible by the number of RBs included in any one of the L candidate frequency domain Resource sets except for the first largest frequency domain Resource set.

As an embodiment, any one of the L candidate frequency domain resource sets except the first maximum frequency domain resource set constitutes the first maximum frequency domain resource set together with other candidate frequency domain resource sets of the L candidate frequency domain resource sets with the same bandwidth.

According to one aspect of the application, comprising:

the first set of frequency domain resources is one of L sets of candidate frequency domain resources, L being a positive integer greater than 1; the L candidate frequency domain resource sets comprise M types of candidate frequency domain resource sets, and any one of the M types of candidate frequency domain resource sets comprises a positive integer number of candidate frequency domain resource sets.

According to one aspect of the application, comprising:

the first class of candidate sets of frequency domain resources comprises only a first maximum set of frequency domain resources; the absolute value of the difference between the number of frequency domain resource units respectively included in any two candidate frequency domain resource sets in the candidate frequency domain resource sets of any type except the first type of candidate frequency domain resource set in the M types of candidate frequency domain resource sets is not more than 1.

According to one aspect of the application, comprising:

all candidate frequency domain resource sets included in any one of the M classes of candidate frequency domain resource sets except the first class of candidate frequency domain resource set constitute the first maximum frequency domain resource set.

According to one aspect of the application, comprising:

there is at least one of the L sets of candidate frequency domain resources that includes the first reference signal resource in the frequency domain, the first set of frequency domain resources being the narrowest one of the L sets of candidate frequency domain resources that includes the first reference signal resource in the frequency domain.

According to one aspect of the application, comprising:

receiving second information, the second information being used to indicate a length of a first time window;

wherein an earliest one of the Q reference signal resources is used to determine a start time of the first time window, and the remaining ones of the Q reference signal resources except the earliest one are within the first time window, and the first time/frequency resource block is within the first time window.

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

transmitting Q reference signal resources, wherein Q is a positive integer greater than 1;

receiving a first MAC PDU on a first block of time-frequency resources, the first MAC PDU comprising first CSI and first information, the first information being used to indicate a first set of frequency-domain resources;

According to one aspect of the application, comprising:

sending second information, wherein the second information indicates the length of the first time window;

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

a first receiver to receive Q reference signal resources, Q being a positive integer greater than 1;

a first transmitter to transmit a first MAC PDU on a first time-frequency resource block, the first MAC PDU including first CSI and first information, the first information indicating a first set of frequency domain resources;

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

a second transmitter to transmit Q reference signal resources, Q being a positive integer greater than 1;

a second receiver to receive a first MAC PDU on a first block of time-frequency resources, the first MAC PDU including first CSI and first information, the first information being used to indicate a first set of frequency-domain resources;

As an example, the method in the present application has the following advantages:

by adopting the method in the application, the sending UE sends a plurality of channel measurement requests before receiving the channel measurement report which is fed back by the receiving UE and aims at the channel measurement request after triggering the channel measurement request, so that the channel measurement result can be rapidly and robustly obtained, and the channel measurement accuracy is improved;

in the method of the present application, the channel measurement report fed back by the receiving UE includes frequency domain resource information for indicating channel measurement, so that the sending UE can definitely obtain a channel measurement request corresponding to the channel measurement report, and the channel measurement report can be effectively utilized to improve the success rate of data transmission and the utilization rate of wireless resources on the PC-5 port.

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, made with reference to the accompanying drawings in which:

fig. 1 illustrates a flow diagram of Q reference signal resources and a first MAC PDU according to one embodiment of the present application;

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

fig. 3 illustrates a schematic diagram of radio protocol architecture of a user plane and a control plane according to an embodiment of the present application;

FIG. 4 illustrates a schematic diagram of a first node and a second node according to an embodiment of the present application;

FIG. 5 illustrates a wireless signal transmission flow diagram according to one embodiment of the present application;

fig. 6 illustrates a schematic diagram of Q reference signal resources, a first reference signal resource, a first MAC PDU and a first time window according to one embodiment of the present application;

fig. 7 illustrates a schematic diagram of first CSI and first information according to an embodiment of the present application;

fig. 8 illustrates a schematic diagram of L sets of candidate frequency domain resources and a first set of frequency domain resources according to an embodiment of the present application;

FIG. 9 illustrates a block diagram of a processing device in a first node according to one embodiment of the present application;

fig. 10 illustrates a block diagram of a processing device 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 flowchart of Q reference signal resources and a first MAC PDU according to an embodiment of the present application, as shown in fig. 1.

In embodiment 1, a first node 100 in the present application receives Q reference signal resources in step 101, where Q is a positive integer greater than 1; transmitting a first MAC PDU on a first time-frequency resource block in step 102, the first MAC PDU comprising first CSI and first information, the first information indicating a first set of frequency-domain resources; wherein measurements for a first reference signal resource, which is one of the Q reference signal resources, are used to calculate the first CSI; the first set of frequency domain resources is used to determine the first reference signal resource from the Q reference signal resources.

As an embodiment, the transmitters of the Q reference signal resources are the same UE.

As an embodiment, the senders of the Q reference signal resources are the same communication device.

As an embodiment, the sender of the Q reference signal resources is the second node in this application.

As an embodiment, the frequency domain resources occupied by the Q reference signal resources all belong to a sidelink (sidelink) resource pool.

As an embodiment, the frequency domain resources occupied by the Q reference signal resources all belong to one carrier.

As an embodiment, the frequency domain resources occupied by the Q reference signal resources all belong to a BWP (BandWidth Part).

As an embodiment, the frequency domain resources occupied by the Q reference signal resources all belong to one serving cell (serving cell).

As an embodiment, time domain resources occupied by any two reference signal resources of the Q reference signal resources are orthogonal (i.e. there is no overlap).

As an embodiment, the frequency domain resources occupied by the Q reference signal resources are the same.

As an embodiment, at least two reference signal resources of the Q reference signal resources occupy different frequency domain resources.

For one embodiment, the Q reference signal resources include Q first-type sequences.

As one example, any one of the Q first-type sequences is a Pseudo-Random Sequence (Pseudo-Random Sequence).

As an embodiment, any one of the Q first-type sequences is a Gold sequence.

As an embodiment, any one of the Q first-type sequences is an M-sequence.

As an embodiment, any one of the Q first-type sequences is a ZC (zadoff-Chu) sequence.

As an embodiment, the Q first-type sequences respectively undergo Sequence Generation (Sequence Generation), discrete fourier transform, Modulation (Modulation), Resource Element Mapping (Resource Element Mapping), and wideband symbol Generation (Generation) to obtain the Q reference signal resources.

As an embodiment, any one of the Q first-type sequences is mapped onto a positive integer number of res (Resource elements (s)).

As an embodiment, one RE occupies one multicarrier Symbol (Symbol) in the time domain and one Subcarrier (Subcarrier) in the frequency domain.

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

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

As one embodiment, any one of the Q Reference Signal resources includes a positive integer number RS (Reference Signal).

As an embodiment, any one of the Q Reference Signal resources includes a positive integer number of CSI-RSs (Channel State Information-Reference signals).

As an embodiment, any one of the Q Reference Signal resources includes a positive integer number of DMRSs (Demodulation Reference signals (s)).

As an embodiment, any one of the Q reference Signal resources includes a positive integer number of SS/PBCH blocks (Synchronization Signal/Physical Broadcast Channel blocks).

As an embodiment, any one of the Q reference Signal resources includes a positive integer number of S-SS/PSBCH blocks (Sidelink Synchronization Signal/Physical Sidelink Broadcast Channel blocks).

For one embodiment, the Q reference signal resources are transmitted on Q psch channels.

As an embodiment, the Q reference signal resources occupy time-frequency resources of Q pschs.

As an embodiment, the Q reference signal resources occupy time-frequency resources of Q psch channels used for unicast transmission.

As an example, one psch channel occupies multiple slots in the time domain.

As an example, one psch channel occupies one slot in the time domain.

As an example, one psch channel occupies a positive integer number of multicarrier symbols in one slot in the time domain.

As an example, a psch channel occupies a positive integer number of subchannels (subchannels)(s) in the frequency domain.

As an embodiment, one subchannel includes a positive integer number of PRBs (Physical Resource blocks(s), PRB(s), Physical Resource blocks) in the frequency domain.

As an embodiment, one PRB includes 12 subcarriers in the frequency domain.

As an embodiment, the first time-frequency resource block includes a plurality of REs.

As an embodiment, the first time-frequency resource block occupies a positive integer number of multicarrier symbols in a time domain.

As an embodiment, the first time-frequency resource block occupies a positive integer number of slots in the time domain.

As an embodiment, the first time-frequency resource block occupies a positive integer number of subchannels in the frequency domain.

As an embodiment, the first time-frequency resource block occupies a positive integer number of prbs(s) in the frequency domain.

As an embodiment, the first time-frequency resource block occupies a positive integer number of subcarriers in a frequency domain.

As an embodiment, the first block of time and frequency resources is obtained by the first node through random selection.

As an embodiment, the first block of time and frequency resources is obtained by the first node by sensing (sensing).

As an embodiment, the first time-frequency resource block is obtained by a base station for scheduling of the first node.

As an embodiment, the first time-frequency resource block is obtained by RSU (Roadside Unit) for scheduling the first node.

As an embodiment, the first time-frequency resource block is obtained by another UE for scheduling for the first node.

For one embodiment, the first block of time and frequency resources is within the first time window.

As an embodiment, the first block of time and frequency resources is used for transmitting the psch.

As an embodiment, the intended recipient of the first MAC PDU is the sender of the Q reference signal resources.

As an embodiment, the target recipient of the first MAC PDU is a second node in the present application.

As an embodiment, the first MAC PDU (Media Access Control Protocol Data Unit) includes a positive integer number of MAC Sub PDUs (Sub Protocol Data units).

As an embodiment, one MAC sub pdu includes one MAC subheader and one MAC CE (Control Element).

As an embodiment, one MAC sub pdu includes one MAC sub-header and one MAC SDU (Service Data unit).

As an embodiment, the first MAC PDU is transmitted on a pscch channel.

As an embodiment, the first CSI is a Sidelink CSI report.

As one embodiment, the first CSI includes measurement results for a first reference signal resource.

As one embodiment, the first CSI comprises a quantized representation of measurement results for a first reference signal resource.

As a sub-embodiment of the above embodiment, the CSI list is an SL CSI list.

As a sub-embodiment of the above embodiment, the CSI list is an UL CSI list.

As one embodiment, the first CSI includes at least one of an RI (Rank Indicator), a CQI (Channel Quality Indicator), and a PMI (Precoding Matrix Indicator).

As one embodiment, the first CSI includes RI and CQI.

In one embodiment, the first reference signal resource includes a first sequence, and the first sequence is one of the Q first-type sequences.

As one embodiment, the measurement for the first reference signal resource includes time-frequency tracking (time-frequency tracking).

As an embodiment, the measurement for the first reference signal resource refers to reception based on coherent detection, that is, the first node performs coherent reception on the wireless signal on the time-frequency resource occupied by the first reference signal resource by using the Q first-type sequences included in the Q reference signal resources, and measures energy of a signal obtained after the coherent reception.

As an embodiment, the measurement for the first reference signal resource refers to reception based on coherent detection, that is, the first node performs coherent reception on a wireless signal by using the first sequence included in the first reference signal resource on a time-frequency resource occupied by the first reference signal resource, and averages received signal energy in a time domain to obtain received power.

As an embodiment, the measurement for the first reference signal resource refers to reception based on coherent detection, that is, the first node performs coherent reception on a wireless signal by using the first sequence included in the first reference signal resource on a time-frequency resource occupied by the first reference signal resource, and averages received signal energy in a time domain and a frequency domain to obtain received power.

As an embodiment, the measurement for the first reference signal resource refers to reception based on energy detection, i.e. the first node perceives (Sense) the energy of the wireless signal on the time-frequency resources occupied by the first reference signal resource and averages over time to obtain the signal strength.

As an embodiment, the measurement for the first reference signal resource refers to that the first node performs coherent reception on a radio signal on a time-frequency resource occupied by the first reference signal resource by using the first sequence included in the first reference signal resource, so as to obtain channel quality on the time-frequency resource occupied by the first reference signal resource.

As an embodiment, the measurement for the first reference signal resource is used to determine the first CSI from a CSI list, the first CSI being one of a plurality of CSIs included in the CSI list.

As one embodiment, the first set of frequency domain resources includes a plurality of REs.

For one embodiment, the first set of frequency domain resources includes a positive integer number of subchannels.

For one embodiment, the first set of frequency domain resources comprises a positive integer number of prbs(s).

For one embodiment, the first set of frequency domain resources includes a positive integer number of subcarriers.

As an embodiment, the first set of frequency domain resources belongs to one of the M classes of candidate sets of frequency domain resources.

As an embodiment, the first set of frequency domain resources is one of the L candidate sets of frequency domain resources other than the M classes of candidate sets of frequency domain resources.

As one embodiment, the first information includes an index indicating the first set of frequency domain resources.

As an embodiment, the first set of frequency domain resources is used by the second node in this application to determine the first reference signal resource from the Q reference signal resources.

As one embodiment, the first set of frequency domain resources includes the first reference signal resources in the frequency domain.

As one embodiment, the first set of frequency domain resources is used to indicate that the first CSI is a measurement for the first of the Q reference signal resources.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2. Fig. 2 illustrates a diagram of a network architecture 200 of NR 5G, LTE (Long-Term Evolution), and LTE-a (Long-Term Evolution-enhanced) systems. The NR 5G or LTE network architecture 200 may be referred to as a 5GS (5G System)/EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS/EPS200 may include one or more UEs 201, NG-RANs (next generation radio access networks) 202, 5 GCs (5G Core networks )/EPCs (Evolved Packet cores) 210, HSS (Home Subscriber Server), Home Subscriber Server)/UDM (Unified Data Management) 220, and internet services 230. The 5GS/EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the 5GS/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 (transmit receive node), or some other suitable terminology, and in an NTN network, the gNB203 may be a satellite, an aircraft, or a terrestrial base station relayed through a satellite. The gNB203 provides the UE201 with an access point to the 5GC/EPC 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, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a gaming console, a drone, an aircraft, a narrowband internet of things device, a machine type communication device, a terrestrial vehicle, an automobile, a vehicular device, a vehicular communication unit, 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 is connected to the 5GC/EPC210 through an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity)/AMF (Authentication Management domain)/SMF (Session Management Function) 211, other MME/AMF/SMF214, S-GW (serving Gateway)/UPF (User Plane Function) 212, and P-GW (Packet data Network Gateway)/UPF 213. The MME/AMF/SMF211 is a control node that handles signaling between the UE201 and the 5GC/EPC 210. In general, the MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW/UPF212, and the S-GW/UPF212 itself is connected to the P-GW/UPF 213. The P-GW provides UE IP address allocation as well as other functions. The P-GW/UPF213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include an internet, an intranet, an IMS (IP Multimedia Subsystem), and a PS (Packet Switching) streaming service.

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

As an embodiment, the UE201 supports transmission in SL.

As an embodiment, the UE201 supports a PC5 interface.

As an embodiment, the UE201 supports car networking.

As an embodiment, the UE201 supports V2X service.

As an embodiment, the UE201 supports D2D service.

As an embodiment, the UE201 supports public safety service.

As an embodiment, the UE241 corresponds to the second node in this application.

As one example, the gNB203 supports internet of vehicles.

As an embodiment, the gNB203 supports V2X traffic.

As an embodiment, the gNB203 supports D2D traffic.

As an embodiment, the gNB203 supports public safety service.

As an example, the gNB203 is a macro Cell (Marco Cell) base station.

As an embodiment, the gNB203 is a Micro Cell (Micro Cell) base station.

As an embodiment, the gNB203 is a Pico Cell (Pico Cell) base station.

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

As an embodiment, the gNB203 is a base station device supporting a large delay difference.

As an example, the gNB203 is a flight platform device.

As an embodiment, the gNB203 is a satellite device.

As an embodiment, the radio link from the UE201 to the gNB203 is an uplink.

As an embodiment, the radio link from the gNB203 to the UE201 is the downlink.

As an embodiment, the wireless link between the UE201 and the UE241 corresponds to a sidelink in this application.

Example 3

Embodiment 3 illustrates a schematic diagram of an embodiment of a radio protocol architecture of a user plane and a 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 first node (RSU in UE or V2X, car equipment or car communication module) and the second node (gNB, RSU in UE or V2X, car equipment or car communication module) or the control plane 300 between two UEs 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 the PHY301, and is responsible for the links between the first and second nodes and the two UEs through the 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 node. The PDCP sublayer 304 provides data ciphering and integrity protection, and the PDCP sublayer 304 also provides handover support for a second node by a first node. The RLC sublayer 303 provides segmentation and reassembly of packets, retransmission of missing packets by ARQ, and the RLC sublayer 303 also provides duplicate packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell between the first nodes. The MAC sublayer 302 is also responsible for HARQ (Hybrid Automatic Repeat Request) operations. The RRC 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 node and the first node. The radio protocol architecture of the user plane 350 includes layer 1(L1 layer) and layer 2(L2 layer), the radio protocol architecture in the user plane 350 for the first and second nodes is 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 (Quality of Service) streams and Data Radio Bearers (DRBs) to support diversity of services. Although not shown, the first node 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 the present application.

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

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

As an embodiment, the Q reference signal resources in this application are generated in the PHY301 or the PHY 351.

As an embodiment, the first MAC PDU in the present application is generated in the MAC302 or the MAC 352.

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

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

As an example, the

L2 layer

305 or 355 belongs to a higher layer.

As an embodiment, the RRC sublayer 306 in the L3 layer belongs to a higher layer.

Example 4

Embodiment 4 illustrates a schematic diagram of a first node and a second node according to the present application, as shown in fig. 4.

A controller/processor 490, a receive processor 452, a transmit processor 455, a transmitter/receiver 456, a data source/memory 480, and a transmitter/receiver 456 may be included in the first node (450) including an antenna 460.

A controller/processor 440, a receive processor 412, a transmit processor 415, a transmitter/receiver 416, a memory 430, the transmitter/receiver 416 including an antenna 420 may be included in the second node (400).

In transmissions from the second node 400 to the first node 450, at the second node 400, upper layer packets are provided to a controller/processor 440. Controller/processor 440 performs the functions of layer L2 and above. In transmissions from the second node 400 to the first node 450, the controller/processor 440 provides packet header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first node 450 based on various priority metrics. The controller/processor 440 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the first node 450. Transmit processor 415 performs various signal processing functions for the L1 layer (i.e., the physical layer), including encoding, interleaving, scrambling, modulation, power control/allocation, precoding, and physical layer control signaling generation, etc., with the generated modulation symbols divided into parallel streams and each stream mapped to a respective multi-carrier subcarrier and/or multi-carrier symbol and then transmitted as a radio frequency signal by transmit processor 415 via transmitter 416 to antenna 420.

In transmissions from the second node 400 to the first node 450, at the first node 450 each receiver 456 receives a radio frequency signal through its respective antenna 460, each receiver 456 recovers baseband information modulated onto a radio frequency carrier, and provides the baseband information to a receive processor 452. The receive processor 452 implements various signal receive processing functions of the L1 layer. The signal reception processing functions include reception of physical layer signals, demodulation based on various modulation schemes (e.g., BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase Shift Keying)) by means of multicarrier symbols in a multicarrier symbol stream, followed by descrambling, decoding, and deinterleaving to recover data or control transmitted by the second node 410 on a physical channel, followed by providing the data and control signals to the controller/processor 490. The controller/processor 490 is responsible for the functions of the L2 layer and beyond. The controller/processor can be associated with a memory 480 that stores program codes and data. The data source/memory 480 may be referred to as a computer-readable medium.

In a transmission from the first node 450 to the second node 400, at the first node 450, a data source/memory 480 is used to provide higher layer data to a controller/processor 490. The data source/storage 480 represents all protocol layers above the L2 layer and the L2 layer. The controller/processor 490 implements the L2 layer protocol for the user plane and the control plane by providing header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the second node 410. The controller/processor 490 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the second node 410. The transmit processor 455 implements various signal transmit processing functions for the L1 layer (i.e., the physical layer). The signal transmission processing functions include coding and interleaving to facilitate Forward Error Correction (FEC) at the UE450 and modulation of baseband signals based on various modulation schemes (e.g., BPSK, QPSK), splitting the modulation symbols into parallel streams and mapping each stream to a respective multi-carrier subcarrier and/or multi-carrier symbol, which are then mapped by the transmit processor 455 via the transmitter 456 to the antenna 460 for transmission as radio frequency signals.

In a transmission from the first node 450 to the second node 400, at the second node 400, receivers 416 receive radio frequency signals through their respective antennas 420, each receiver 416 recovers baseband information modulated onto a radio frequency carrier, and provides the baseband information to a receive processor 412. The receive processor 412 performs various signal reception processing functions for the L1 layer (i.e., the physical layer), including obtaining a stream of multicarrier symbols, then performing demodulation based on various modulation schemes (e.g., BPSK, QPSK) on the multicarrier symbols in the stream of multicarrier symbols, followed by decoding and deinterleaving to recover the data and/or control signals originally transmitted by the first node 450 over the physical channel. The data and/or control signals are then provided to a controller/processor 440. The functions of the L2 layer are implemented at the controller/processor 440. The controller/processor 440 can be associated with a memory 430 that stores program codes and data. The memory 430 may be a computer-readable medium.

For one embodiment, the first node 450 apparatus comprises: 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 node 450 apparatus at least: receiving Q reference signal resources, wherein Q is a positive integer greater than 1; transmitting a first MAC PDU on a first time-frequency resource block, the first MAC PDU comprising first CSI and first information, the first information indicating a first set of frequency-domain resources; wherein measurements for a first reference signal resource, which is one of the Q reference signal resources, are used to calculate the first CSI; the first set of frequency domain resources is used to determine the first reference signal resource from the Q reference signal resources.

For one embodiment, the first node 450 apparatus comprises: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a first set of information indicating a first length of time and a first expiration value; receiving Q reference signal resources, wherein Q is a positive integer greater than 1; transmitting a first MAC PDU on a first time-frequency resource block, the first MAC PDU comprising first CSI and first information, the first information indicating a first set of frequency-domain resources; wherein measurements for a first reference signal resource, which is one of the Q reference signal resources, are used to calculate the first CSI; the first set of frequency domain resources is used to determine the first reference signal resource from the Q reference signal resources.

As an embodiment, the second node 400 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 node 400 means at least: transmitting Q reference signal resources, wherein Q is a positive integer greater than 1; receiving a first MAC PDU on a first block of time-frequency resources, the first MAC PDU comprising first CSI and first information, the first information being used to indicate a first set of frequency-domain resources; wherein measurements for a first reference signal resource, which is one of the Q reference signal resources, are used to calculate the first CSI; the first set of frequency domain resources is used to determine the first reference signal resource from the Q reference signal resources.

As an embodiment, the second node 400 comprises: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: transmitting Q reference signal resources, wherein Q is a positive integer greater than 1; receiving a first MAC PDU on a first block of time-frequency resources, the first MAC PDU comprising first CSI and first information, the first information being used to indicate a first set of frequency-domain resources; wherein measurements for a first reference signal resource, which is one of the Q reference signal resources, are used to calculate the first CSI; the first set of frequency domain resources is used to determine the first reference signal resource from the Q reference signal resources.

For one embodiment, the first node 450 is a UE.

As an example, the first node 450 is a user equipment supporting V2X.

As an example, the first node 450 is a user equipment supporting D2D.

For one embodiment, the first node 450 is a vehicle-mounted device.

For one embodiment, the first node 450 is an RSU.

As an example, the second node 400 is a base station device supporting V2X.

As an embodiment, the second node 400 is a UE.

As an example, the second node 400 is a user equipment supporting V2X.

As an embodiment, the first node 400 is a user equipment supporting D2D

As an example, the second node 400 is a vehicle-mounted device.

For one embodiment, the second node 400 is an RSU device.

For one embodiment, receiver 456 (including antenna 460), receive processor 452, and controller/processor 490 are configured to receive the Q reference signal resources described herein.

For one embodiment, the transmitter 416 (including the antenna 420), the transmit processor 415, and the controller/processor 440 are used to transmit the Q reference signal resources in this application.

For one embodiment, receiver 456 (including antenna 460), receive processor 452, and controller/processor 490 are used to receive the second information described herein.

For one embodiment, transmitter 416 (including antenna 420), transmit processor 415, and controller/processor 440 are used to transmit the second information described herein.

For one embodiment, a transmitter 456 (including an antenna 460), a transmit processor 455, and a controller/processor 490 are used to transmit the first MAC PDU described herein.

For one embodiment, the receiver 416 (including the antenna 420), the receive processor 412, and the controller/processor 440 are configured to receive the first MAC PDU as described herein.

Example 5

Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in fig. 5. In FIG. 5, the second node U1 and the first node U2 communicate over a sidelink. It is specifically noted that the order in this example does not limit the order of signal transmission and the order of implementation in this application.

For theSecond node U1Second information is transmitted in step S11, Q reference signal resources are transmitted in step S12, and a first MAC PDU is received on a first time-frequency resource block in step S13.

For theFirst node U2The second information is received in step S21, Q reference signal resources are received in step S22, the first CSI is calculated in step S23, and the first MAC PDU is transmitted on the first time-frequency resource block in step S24.

In embodiment 5, Q reference signal resources are received, Q being a positive integer greater than 1; transmitting a first MAC PDU on a first time-frequency resource block, the first MAC PDU comprising first CSI and first information, the first information indicating a first set of frequency-domain resources; wherein measurements for a first reference signal resource, which is one of the Q reference signal resources, are used to calculate the first CSI; the first set of frequency domain resources is used to determine the first reference signal resource from the Q reference signal resources; the first set of frequency domain resources is one of L sets of candidate frequency domain resources, L being a positive integer greater than 1; the L candidate frequency domain resource sets comprise M types of candidate frequency domain resource sets, and any one of the M types of candidate frequency domain resource sets comprises a positive integer number of candidate frequency domain resource sets; the first class of candidate sets of frequency domain resources comprises only a first maximum set of frequency domain resources; the absolute value of the difference of the number of frequency domain resource units respectively included in any two candidate frequency domain resource sets in a plurality of candidate frequency domain resource sets included in any one of the M types of candidate frequency domain resource sets except the first type of candidate frequency domain resource set is not more than 1; all candidate frequency domain resource sets included in any one of the M classes of candidate frequency domain resource sets except the first class of candidate frequency domain resource set form the first maximum frequency domain resource set; at least one of the L sets of candidate frequency domain resources including the first reference signal resource in the frequency domain is present, the first set of frequency domain resources being the narrowest one of the L sets of candidate frequency domain resources including the first reference signal resource in the frequency domain; receiving second information, the second information being used to indicate a length of a first time window; wherein an earliest one of the Q reference signal resources is used to determine a start time of the first time window, and the remaining ones of the Q reference signal resources except the earliest one are within the first time window, and the first time/frequency resource block is within the first time window.

As an embodiment, the frequency domain resources included in the L candidate frequency domain resource sets all belong to a sidelink resource pool.

As an embodiment, the frequency domain resources included in the L candidate frequency domain resource sets all belong to one carrier.

As an embodiment, the L sets of candidate frequency-domain resources all include frequency-domain resources belonging to a BWP.

As an embodiment, the L sets of candidate frequency domain resources all include frequency domain resources belonging to one serving cell.

As an embodiment, at least two candidate frequency domain resource sets of the L candidate frequency domain resource sets do not belong to the same sidelink resource pool.

As an embodiment, at least two of the L candidate frequency domain resource sets are not orthogonal (i.e. have an overlap).

As an embodiment, at least two of the L candidate frequency domain resource sets include non-orthogonal partial frequency domain resources.

As an embodiment, the frequency domain resource units comprised in any one of the L candidate frequency domain resource sets are subchannels.

As an embodiment, the frequency domain resource units comprised in any one of the L candidate frequency domain resource sets are physical resource blocks.

As an embodiment, the frequency domain resource elements comprised in any one of the L candidate frequency domain resource sets are REs.

As an embodiment, any one of the L sets of candidate frequency domain resources comprises a positive integer number of subchannels.

As an embodiment, any one of the L candidate sets of frequency domain resources comprises a positive integer number of physical resource blocks.

As an embodiment, any one of the L sets of candidate frequency domain resources comprises a positive integer number of res(s).

As an embodiment, the L candidate frequency domain resource sets are indicated by L candidate frequency domain resource set indices comprising ceil (log)₂L) bits, the ceil (.) is a ceiling operation.

As an embodiment, the L candidate frequency domain resource sets include M types of candidate frequency domain resource sets, where M is a positive integer.

As an embodiment, the L candidate frequency domain resource sets include a first class of candidate frequency domain resource sets, which includes the first largest frequency domain resource set.

As an embodiment, the L candidate frequency domain resource sets include M types of candidate frequency domain resource sets, and any candidate frequency domain resource set of all candidate frequency domain resource sets included in any type of candidate frequency domain resource set except the first type of candidate frequency domain resource set in the M types of candidate frequency domain resource sets is a subset of the first largest frequency domain resource set.

As an embodiment, the L candidate frequency domain resource sets belong to the same class of candidate frequency domain resource sets, and any one of the L candidate frequency domain resource sets is a subset of the first largest candidate frequency domain resource set.

As an embodiment, the L candidate frequency domain resource sets include M types of candidate frequency domain resource sets, and any two candidate frequency domain resource sets of all candidate frequency domain resource sets included in any one type of candidate frequency domain resource set except the first type of candidate frequency domain resource set in the M types of candidate frequency domain resource sets do not overlap.

As an embodiment, the L candidate frequency domain resource sets include M types of candidate frequency domain resource sets, and at least two candidate frequency domain resource sets of all candidate frequency domain resource sets included in any one type of candidate frequency domain resource set except the first type of candidate frequency domain resource set in the M types of candidate frequency domain resource sets partially overlap.

As an embodiment, the number of candidate frequency domain resource sets respectively included in any two of the M classes of candidate frequency domain resource sets is different.

As an embodiment, the number of candidate frequency domain resource sets respectively included in at least two types of candidate frequency domain resource sets in the M types of candidate frequency domain resource sets is the same.

As an embodiment, the number of candidate frequency domain resource sets respectively included in at least two types of candidate frequency domain resource sets in the M types of candidate frequency domain resource sets is different.

As an embodiment, an absolute value of a difference between numbers of frequency domain resource units respectively included in any two candidate frequency domain resource sets of the candidate frequency domain resource sets of any type except the first type of candidate frequency domain resource set among the M types of candidate frequency domain resource sets is greater than 1.

As an embodiment, the difference between the numbers of frequency domain resource units included in any two candidate frequency domain resource sets of the candidate frequency domain resource sets of any one class except the first class of candidate frequency domain resource set in the M classes of candidate frequency domain resource sets is 0, or 1, or-1.

As an embodiment, the frequency domain resources occupied by the first time-frequency resource block belong to the first largest set of frequency domain resources.

As an embodiment, the frequency domain resources occupied by the first time-frequency resource block do not belong to the first maximum set of frequency domain resources.

For one embodiment, the first set of maximum frequency domain resources comprises a pool of sidelink resources.

For one embodiment, the first set of maximum frequency domain resources includes one carrier.

As an embodiment, the first set of maximum frequency-domain resources comprises one BWP.

As an embodiment, the first set of maximum frequency domain resources comprises one serving cell.

As an embodiment, the frequency domain resources comprised in the first set of largest frequency domain resources are consecutive.

As an embodiment, the frequency domain resources comprised in the first set of largest frequency domain resources are not contiguous.

As an embodiment, all candidate frequency domain resource sets included in any one of the M classes of candidate frequency domain resource sets except the first class of candidate frequency domain resource set and a second frequency domain resource set, which belongs to the L candidate frequency domain resource sets, constitute the first largest frequency domain resource set.

As an embodiment, a part of the candidate frequency domain resource sets included in any one of the candidate frequency domain resource sets of the M classes except the first class of candidate frequency domain resource set constitute the first largest frequency domain resource set.

As an embodiment, the first set of frequency domain resources is the widest one of the L sets of candidate frequency domain resources comprising the first reference signal resource in the frequency domain.

As an embodiment, the first set of frequency domain resources is a second narrow one of the L sets of candidate frequency domain resources that includes the first reference signal resource in the frequency domain, and the number of frequency domain resources included in the second narrow one set of candidate frequency domain resources is not less than the number of frequency domain resources included in the narrowest one set of candidate frequency domain resources.

As an embodiment, the first set of frequency domain resources is one of L sets of candidate frequency domain resources that includes part of the first reference signal resource in the frequency domain.

As an embodiment, the first set of frequency domain resources is the narrowest one of the L sets of candidate frequency domain resources comprising part of the first reference signal resource in the frequency domain.

As an embodiment, when the first reference signal resource comprises, in the frequency domain, some or all of a plurality of L sets of candidate frequency domain resources, the first set of frequency domain resources is one of the plurality of L sets of candidate frequency domain resources in which the first reference signal resource comprises the most frequency domain resources.

As an embodiment, when there are 2 of the L candidate sets of frequency domain resources that include the narrowest candidate set of frequency domain resources that includes part of the first reference signal resource, the first set of frequency domain resources is one of the 2 candidate sets of frequency domain resources that includes more than half the first reference signal resource in the frequency domain.

As an embodiment, when there are more than 2 narrowest candidate sets of frequency-domain resources of the L candidate sets of frequency-domain resources that include part of the first reference signal resource, the first set of frequency-domain resources is one of the more than 2 candidate sets of frequency-domain resources that includes the first reference signal resource most in the frequency domain.

As an embodiment, the second information is transmitted internally in the first node.

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

As one embodiment, the second information is passed from a higher layer of the first node to a MAC layer of the first node.

As one embodiment, the second information is transmitted by the second node to the first node.

As an embodiment, the second information is Configured (Configured).

As an embodiment, the second information is Pre-configured (Pre-configured).

As an embodiment, the second information is downlink signaling.

As an embodiment, the second information is downlink RRC signaling.

As an embodiment, the second information includes all or part of IE in an RRC signaling.

As an embodiment, the second information includes all or part of a field in one RRC signaling.

As an embodiment, the second information is PC5-RRC signaling.

As an embodiment, the second information includes all or part of IE in a PC5-RRC signaling.

As an embodiment, the second information comprises all or part of a field in one of the PC5-RRC signaling.

As an embodiment, the second Information is included in a Sidelink physical layer SCI (Sidelink Control Information).

As an embodiment, the second Information includes all or part of IE in SIB (System Information Block) Information.

As an embodiment, the second information includes all or part of fields in an IE in one SIB information.

As an embodiment, the second information is Cell Specific.

As an embodiment, the second information is sidelink Resource Pool Specific (Resource Pool Specific).

As an embodiment, the second information is a group-specific (UE group-specific) information.

As an embodiment, the second information is UE-specific (UE-specific) information.

In one embodiment, the second information is transmitted via a DL-SCH.

As an embodiment, the second information is transmitted through one PDSCH.

In one embodiment, the second information is transmitted via a SL-SCH.

As an embodiment, the second information is transmitted via a psch.

As an embodiment, the second information is transmitted through one SCI.

As an embodiment, the second information is transmitted over a resource of a psch.

As an embodiment, the second information is transmitted over a PSCCH.

As an embodiment, the second information is Broadcast (Broadcast).

As an embodiment, the second information is Unicast (Unicast).

As an embodiment, the second information is multicast (Groupcast).

As one embodiment, the second information includes a length of the first time window.

As an embodiment, the first node is configured with lengths of a plurality of time windows, the first time window is one of the lengths of the plurality of time windows configured by the first node, and the second information includes an index indicating the length of the first time window.

As an embodiment, the second information is transmitted together with an earliest one of the Q reference signal resources.

As an embodiment, the second information is carried by control information of an earliest one of the Q reference signal resources.

As an embodiment, the second information is of the second order (2) of the earliest one of the Q reference signal resources^ndstage) control information carrying.

As an embodiment, the first node receives third information comprising candidate values for the length of a set of time windows.

As a sub-embodiment of the above-mentioned embodiment, the second information indicates a length of a first time window, and the length of the first time window is one candidate value of candidate values of the length of the set of time windows included in the third information.

As one embodiment, the second information includes a first time window index indicating one of the candidate values for the length of the first time window in the length of the set of time windows.

As an embodiment, the length of the first time window comprises a positive integer number of subframes, and the duration of the one subframe is 1 ms.

As an embodiment, the length of the first time window includes a positive integer number of time slots, and the duration of the time slot is related to the interval of subcarriers used for transmitting Q reference signal resources.

As an embodiment, the length of the first time window includes a positive integer number of multicarrier symbols, and the duration of the one multicarrier symbol is related to the interval of subcarriers used for transmitting Q reference signal resources.

As an embodiment, the length of the first time window is not more than 20 ms.

As an embodiment, the length of the first time window is not less than 3 ms.

As an embodiment, the starting time of the first time window is an ending time of a time domain resource occupied by an earliest reference signal resource among the Q reference signal resources.

As an embodiment, the starting time of the first time window is the ending time of the time slot where the earliest reference signal resource in the Q reference signal resources is located.

As an embodiment, the starting time of the first time window is the ending time of the sidelink timeslot where the earliest reference signal resource among the Q reference signal resources is located.

As an embodiment, the starting time of the first time window is an ending time of a last multicarrier symbol occupied by an earliest reference signal resource of the Q reference signal resources.

As an embodiment, the starting time of the first time window is the starting time of the first time slot after the time slot occupied by the earliest reference signal resource in the Q reference signal resources.

As an embodiment, the starting time of the first time window is the starting time of the first sidelink timeslot after the sidelink timeslot occupied by the earliest reference signal resource among the Q reference signal resources.

As an embodiment, the Q reference signal resources are earlier in the time domain than the end time of the first time window.

As an embodiment, the first time-frequency resource is later in time domain than a start time of the first time window and earlier than an end time of the first time window.

Example 6

Embodiment 6 illustrates a schematic diagram of Q reference signal resources, a first reference signal resource, a first MAC PDU and a first time window according to an embodiment of the present application, as shown in fig. 6. In fig. 6, an unfilled rectangle represents one of Q reference signal resources in the present application, and a cross-hatched rectangle represents the first MAC PDU in the present application.

As an embodiment, the Q reference signal resources occupy the same frequency domain resource.

In case a of embodiment 6, the first reference signal resource is an earliest one of the Q reference signal resources.

In case B of embodiment 6, the first reference signal resource is one of the Q reference signal resources except for an earliest one.

As one embodiment, measurements for the Q reference signal resources are used to calculate Q CSIs.

As an embodiment, the frequency domain resources occupied by the first reference signal resource and the frequency domain resources occupied by the second reference signal resource are the same, and the second reference signal resource is before the first reference signal resource in the time domain, as shown in the case B of embodiment 6, the first node abandons sending the second CSI obtained by measurement calculation for the second reference signal resource.

As an embodiment, the first reference signal resource is a latest reference signal resource in a first class of reference signal resources, and the first class of reference signal resources is a reference signal resource occupying the same frequency domain resource among Q reference signal resources.

As a sub-embodiment of the above-mentioned embodiments, the first node sends CSI measured for each of the first type of reference signal resources.

As a sub-implementation of the above-described embodiment, the first node abstains from sending CSI other than the first CSI.

As an embodiment, the measurements for the Q reference signal resources are used to calculate Q CSIs, the first CSI is one of the Q CSIs, the first MAC PDU includes the Q CSIs and Q first class information, the first information is one of the Q first class information, the Q first class information indicates Q sets of frequency domain resources, respectively, any one of the Q sets of frequency domain resources belongs to one of the L sets of frequency domain resources, and any one of the Q sets of frequency domain resources is used by the second node in this application to determine one reference signal resource from the Q reference signal resources.

As an embodiment, the measurements for the Q reference signal resources are used to calculate Q CSIs, the first MAC PDU includes P CSIs and P first-type information, where P is a positive integer smaller than Q, the first CSI is one of the P CSIs, the first information is one of the P first-type information, the P first-type information respectively indicates P sets of frequency-domain resources, any one of the P sets of frequency-domain resources belongs to one of the L sets of frequency-domain resources, and any one of the P sets of frequency-domain resources is used by the second node in this application to determine one reference signal resource from the Q reference signal resources.

Example 7

Embodiment 7 illustrates a schematic diagram of first CSI and first information according to an embodiment of the present application, as shown in fig. 7.

As an embodiment, the first CSI is a MAC layer information.

As an embodiment, the first information is a MAC layer information.

As an embodiment, the first CSI and the first information belong to the same MAC CE.

As an embodiment, the first CSI and the first information belong to the same MAC sub pdu.

As an embodiment, the first MAC PDU includes a plurality of MAC sub-PDUs, and any one of the plurality of MAC sub-PDUs includes one MAC CE, one MAC SDU, or one Padding.

As an embodiment, the first CSI occupies part or all of bits of a first byte in the MAC CE.

As an embodiment, the first CSI occupies 5 bits of a first byte in the MAC CE.

As an embodiment, the first information occupies a part of bits of a first byte in the MAC CE.

As an embodiment, the first information occupies a part of bits of a first byte and a part or all of bits of a second byte in the MAC CE.

In case a of embodiment 7, the first information occupies reserved 3 bits in the first byte in the MAC CE.

In case B of embodiment 7, the first information occupies 3 bits reserved in the first byte and 6 bits in the second byte in the MAC CE.

In case C of embodiment 7, the first information occupies 3 bits reserved in the first byte and 8 bits in the second byte in the MAC CE.

Example 8

Embodiment 8 illustrates a schematic diagram of L candidate frequency domain resource sets and a first frequency domain resource set according to an embodiment of the present application, as shown in fig. 8. In fig. 8, unfilled rectangles represent L candidate frequency domain resource sets in the present application, and diagonal filled rectangles represent frequency domain resources occupied by the first reference signal resource.

As an embodiment, when the first largest set of frequency domain resources comprises an even number of frequency domain resources, any one of the second set of candidate frequency domain resources comprises half of the frequency domain resources comprised by the first set of candidate frequency domain resources, any one of the third set of candidate frequency domain resources comprises half of the frequency domain resources comprised by the second set of candidate frequency domain resources, and so on.

As an embodiment, the L sets of frequency domain candidate resources comprise M classes of sets of candidate frequency domain resources, the first class of sets of candidate frequency domain resources comprises only a first set of maximum frequency domain resources comprising N_subCHA sub-channel; the number of candidate frequency domain resource sets comprised by the second type of candidate frequency domain resource set is 2 times the number of candidate frequency domain resource sets comprised by the first type of candidate frequency domain resource set, i.e. the second type of candidate frequency domain resource set comprises 2 candidate frequency domain resource sets, and the first candidate frequency domain resource set in the second type of candidate frequency domain resource set comprises X_2-1＝ceil(N_subCH/2) subchannels, a second one of the second set of candidate frequency-domain resources comprising X_2-2＝N_subCH-ceil(N_subCH/2) subchannels, the number of candidate frequency domain resource sets comprised by a third class of candidate frequency domain resource sets being 2 times the number of candidate frequency domain resource sets comprised by the second class of candidate frequency domain resource sets, i.e. the third class of candidate frequency domain resource sets comprises 4 candidate frequency domain resource sets, the third class of candidate frequency domain resource sets comprisesSelecting a first candidate set of frequency domain resources of the set of frequency domain resources to include X_3-1＝ceil(X_2-1/2) subchannels, a second one of the third class of candidate sets of frequency-domain resources comprising X_3-2＝X_2-1-ceil(X_2-1/2) subchannels, a third one of the third class of candidate sets of frequency-domain resources comprising X_3-3＝ceil(X_2-2/2) subchannels, a fourth candidate set of frequency-domain resources of the third class of candidate sets of frequency-domain resources comprising X_3-4＝X_2-2-ceil(X_2-2/2) sub-channels, and so on, with ceil (.) being the rounding-up operation.

In case a of embodiment 8, said L is 7, comprising 3 classes of candidate frequency domain resource sets, said 7 candidate frequency domain resource sets being indicated by candidate frequency domain resource set indices 1 to 7, respectively, i.e. said first class of candidate frequency domain resource set index is 1, said second class of candidate frequency domain resource set comprising 2 candidate frequency domain resource sets, indicated by candidate frequency domain

resource set indices

1 and 2, respectively, and said third class of candidate frequency domain resource set comprising 4 candidate frequency domain resource sets, indicated by candidate frequency domain

resource set indices

3, 4, 5 and 6, respectively, said three candidate frequency domain resource sets with candidate frequency domain

resource set indices

1, 2 and 5 all comprising frequency domain resources of said first reference signal resource, said candidate frequency domain resource set index of said candidate frequency domain resource set index 5 of said three candidate frequency domain resource sets with candidate frequency domain

resource set indices

1, 2 and 5 having the narrowest bandwidth of said candidate frequency domain resource set index of 5, the first set of frequency domain resources is a candidate set of frequency domain resources with the candidate set of frequency domain resources index of 5.

Case B of embodiment 8, where L is 7, includes class 2 candidate frequency domain resource sets, the 7 candidate frequency domain resource sets are indicated by candidate frequency domain resource set indices 1 to 7, respectively, i.e. the first class of candidate frequency domain resource set index is 1, the second class of candidate frequency domain resource sets comprises 6 candidate frequency domain resource sets, indicated by candidate frequency domain resource set indices 1 to 6, respectively, the two candidate frequency domain resource sets of candidate frequency domain

resource set indices

3 and 4 comprise part of the frequency domain resources of the first reference signal resource, the candidate frequency domain resource set of candidate frequency domain resource set index 1 comprises the frequency domain resources of the first reference signal resource set, the first set of frequency domain resources is a candidate set of frequency domain resources with the candidate set index of frequency domain resources of 1, i.e. the first set of frequency domain resources is a first largest set of frequency domain resources.

Example 9

Embodiment 9 is a block diagram illustrating a configuration of a processing apparatus in a first node according to an embodiment of the present application, as shown in fig. 9. In fig. 9, a first node processing apparatus 900 includes a first receiver 901 and a first transmitter 902. The first receiver 901 includes a transmitter/receiver 456 (including an antenna 460), a receive processor 452, and a controller/processor 490 of fig. 4; the first transmitter 902 includes a transmitter/receiver 456 (including an antenna 460), a transmit processor 455, and a controller/processor 490 of fig. 4 of the present application.

In embodiment 9, a first receiver 901 receives Q reference signal resources, where Q is a positive integer greater than 1; a first transmitter 902 that transmits a first MAC PDU on a first time-frequency resource block, the first MAC PDU comprising first CSI and first information, the first information indicating a first set of frequency-domain resources; wherein measurements for a first reference signal resource, which is one of the Q reference signal resources, are used to calculate the first CSI; the first set of frequency domain resources is used to determine the first reference signal resource from the Q reference signal resources.

As an embodiment, the first set of frequency domain resources is one of L sets of candidate frequency domain resources, L being a positive integer greater than 1; the L candidate frequency domain resource sets comprise M types of candidate frequency domain resource sets, and any one of the M types of candidate frequency domain resource sets comprises a positive integer number of candidate frequency domain resource sets.

As an embodiment, the first set of frequency domain resources is one of L sets of candidate frequency domain resources, L being a positive integer greater than 1; the L candidate frequency domain resource sets comprise M types of candidate frequency domain resource sets, and any one of the M types of candidate frequency domain resource sets comprises a positive integer number of candidate frequency domain resource sets; the first class of candidate sets of frequency domain resources comprises only a first maximum set of frequency domain resources; the absolute value of the difference between the number of frequency domain resource units respectively included in any two candidate frequency domain resource sets in the plurality of candidate frequency domain resource sets included in any one of the candidate frequency domain resource sets except the first candidate frequency domain resource set in the M candidate frequency domain resource sets is not more than 1.

As an embodiment, the first set of frequency domain resources is one of L sets of candidate frequency domain resources, L being a positive integer greater than 1; the L candidate frequency domain resource sets comprise M types of candidate frequency domain resource sets, and any one of the M types of candidate frequency domain resource sets comprises a positive integer number of candidate frequency domain resource sets; the first class of candidate sets of frequency domain resources comprises only a first maximum set of frequency domain resources; all candidate frequency domain resource sets included in any one of the M classes of candidate frequency domain resource sets except the first class of candidate frequency domain resource set constitute the first maximum frequency domain resource set.

As an embodiment, the first set of frequency domain resources is one of L sets of candidate frequency domain resources, L being a positive integer greater than 1; there is at least one of the L sets of candidate frequency domain resources that includes the first reference signal resource in the frequency domain, the first set of frequency domain resources being the narrowest one of the L sets of candidate frequency domain resources that includes the first reference signal resource in the frequency domain.

For one embodiment, the first receiver 901 receives second information, where the second information is used to indicate the length of a first time window; wherein an earliest one of the Q reference signal resources is used to determine a start time of the first time window, and the remaining ones of the Q reference signal resources except the earliest one are within the first time window, and the first time/frequency resource block is within the first time window.

Example 10

Embodiment 10 illustrates a block diagram of a processing apparatus in a second node according to an embodiment of the present application, as shown in fig. 10. In fig. 10, the second node processing apparatus 1000 includes a second transmitter 1001 and a second receiver 1002. The second transmitter 1001 includes the transmitter/receiver 416 (including the antenna 420), the transmit processor 415, and the controller/processor 440 of fig. 4 of the present application; the second receiver 1002 includes the transmitter/receiver 416 (including the antenna 420), the receive processor 412, and the controller/processor 440 of fig. 4 of the present application.

In embodiment 10, a second transmitter 1001 transmits Q reference signal resources, where Q is a positive integer greater than 1; a second receiver 1002 that receives a first MAC PDU on a first set of time-frequency resource blocks, the first MAC PDU comprising first CSI and first information, the first information being used to indicate a first set of frequency-domain resources; wherein measurements for a first reference signal resource, which is one of the Q reference signal resources, are used to calculate the first CSI; the first set of frequency domain resources is used to determine the first reference signal resource from the Q reference signal resources.

For one embodiment, the second transmitter 1001 transmits second information indicating a length of a first time window; wherein an earliest one of the Q reference signal resources is used to determine a start time of the first time window, and the remaining ones of the Q reference signal resources except the earliest one are within the first time window, and the first time/frequency resource block is within the first time window.

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. The first Type of Communication node or UE or terminal in the present application includes, but is not limited to, a mobile phone, a tablet computer, a notebook, a network card, a low power consumption device, an eMTC (enhanced Machine Type Communication) device, an NB-IoT device, a vehicle-mounted Communication device, an aircraft, an airplane, an unmanned aerial vehicle, a remote control plane, and other wireless Communication devices. The second type of communication node, base station or network side device in this 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 (Transmission and Reception Point), a relay satellite, a satellite base station, an air base station, 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 configured for wireless communication, comprising:

2. The first node device of claim 1, wherein the first set of frequency domain resources is one of L sets of candidate frequency domain resources, wherein L is a positive integer greater than 1; the L candidate frequency domain resource sets comprise M types of candidate frequency domain resource sets, and any one of the M types of candidate frequency domain resource sets comprises a positive integer number of candidate frequency domain resource sets.

3. The first node apparatus of claim 2, wherein the first class of candidate sets of frequency domain resources comprises only a first largest set of frequency domain resources; the absolute value of the difference between the number of frequency domain resource units respectively included in any two candidate frequency domain resource sets in the candidate frequency domain resource sets of any type except the first type of candidate frequency domain resource set in the M types of candidate frequency domain resource sets is not more than 1.

4. The first node apparatus of claim 3, wherein all candidate frequency domain resource sets comprised by any one of the M classes of candidate frequency domain resource sets other than the first class of candidate frequency domain resource set constitute the first largest frequency domain resource set.

5. The first node apparatus of any of claims 2-4, wherein there is at least one of the L sets of candidate frequency domain resources that includes the first reference signal resource in the frequency domain, the first set of frequency domain resources being the narrowest one of the L sets of candidate frequency domain resources that includes the first reference signal resource in the frequency domain.

6. The first node device of claims 1 to 5, comprising:

the first receiver receiving second information, the second information being used to indicate a length of a first time window;

7. A second node configured for wireless communication, comprising:

8. The second node device of claim 7, wherein the first set of frequency domain resources is one of L sets of candidate frequency domain resources, wherein L is a positive integer greater than 1; the L candidate frequency domain resource sets comprise M types of candidate frequency domain resource sets, and any one of the M types of candidate frequency domain resource sets comprises a positive integer number of candidate frequency domain resource sets.

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

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