CN113395769B

CN113395769B - Method and device used in node of wireless communication

Info

Publication number: CN113395769B
Application number: CN202010176589.6A
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: 2020-03-13
Filing date: 2020-03-13
Publication date: 2022-05-31
Anticipated expiration: 2040-03-13
Also published as: CN113395769A

Abstract

A method and apparatus in a node used for wireless communication is disclosed. A first node firstly receives first information and second information, wherein the first information is used for determining a first time-frequency resource pool and a first candidate parameter set; subsequently monitoring for first signaling in the first pool of time-frequency resources; the first pool of time-frequency resources comprises K1 resource element groups, the first set of candidate parameters comprises M1 candidate parameters; any resource unit included in the first time-frequency resource pool is associated with one of the M1 candidate parameters; the first time frequency resource pool is divided into K3 resource unit groups, and the second information is used for determining the number of resource unit groups included in the resource unit groups; the resource units associated to the same candidate parameter in one resource unit group adopt the same precoding. The method and the device ensure the robustness of the control signaling under multiple transmission receiving points by limiting the REG beam.

Description

Method and apparatus in a node used for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and in particular, to a transmission method of a PDCCH (Physical Downlink Control Channel) under Release 17 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 a conventional LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced, enhanced Long-Term Evolution) system, for transmission performance, a MIMO (multiple Input multiple Output) technology is introduced to improve throughput and transmission rate of the system. In 5G and NR systems, Beamforming (Beamforming) schemes are further proposed to further enhance transmission efficiency.

In evolution of 5G and subsequent Release 17 releases, Multi-Beam (Multi-Beam) schemes will be evolved and enhanced continuously, wherein an important aspect is how to enhance the transmission performance of PDCCH under Multi-Beam, especially under Multi-Transmitter Receiver Points (Multi-tx receiving Points) in a Multi-Beam scenario.

Disclosure of Invention

Under the Multi-TRP combined Multi-beam scene, a solution for enhancing the PDCCH performance is to simultaneously transmit PDCCHs carrying the same information on beams corresponding to a plurality of TRPs, so as to realize the effect of diversity gain. In the conventional PDCCH blind detection of Release16, by introducing the concept of REG (Resource Element Group) Bundle, multiple REGs in one REG Bundle are assumed to adopt the same precoding, thereby simplifying the complexity of terminal side channel estimation and improving the performance of channel estimation. In a multiple TRP scenario, the definition of REG Bundle requires a new definition for the configuration of multiple TRPs.

In view of the above, the present application provides a solution. It should be noted that, in the above problem description, the Multi-TRP scenario is only used as an example of an application scenario of the solution provided in the present application; the method is also applicable to a scene with multiple base stations, for example, and achieves the technical effect similar to that in a Multi-TRP scene. Similarly, the present application is also applicable to scenarios such as Carrier Aggregation (Carrier Aggregation) or internet of things (V2X) communication, so as to achieve similar technical effects. In addition, the adoption of a unified solution for different scenarios also helps to reduce hardware complexity and cost.

In view of the above, the present application provides a solution. 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 first information and second information, the first information being used to determine a first pool of time-frequency resources and a first set of candidate parameters;

monitoring for first signaling in the first pool of time-frequency resources;

wherein the first pool of time-frequency resources comprises K1 resource element groups, the first set of candidate parameters comprises M1 candidate parameters; the K1 is a positive integer greater than 1, the M1 is a positive integer greater than 1; each resource element group included in the first time-frequency resource pool includes a positive integer greater than 1, the first signaling occupies K2 resource element groups of K1 resource element groups included in the first time-frequency resource pool, and the K2 is a positive integer greater than 1 and not greater than K1; any resource unit included in the first time-frequency resource pool is associated with one candidate parameter in the M1 candidate parameters; the resource element groups comprised by the first time frequency resource pool are divided into K3 resource element groups, K3 being a positive integer, the second information being used to determine the number of resource element groups comprised by each of the K3 resource element groups; a first resource unit group is one of the K3 resource unit groups, the first node assuming the same precoding in resource units included in the first resource unit group that are associated to the same one of the M1 candidate parameters.

As an embodiment, one technical feature of the above method is that: the K3 resource element groups represent K3 REG bundles indicated by the base station for the first node; however, due to the introduction of multiple TRPs, the resource element groups in the above one resource element group may be from different TRPs, corresponding to different beam characteristics; in this scenario, only REs or REGs associated with the same candidate parameter in one resource element group can be considered to adopt the same precoding, i.e., only REs or REGs associated with the same beam in one resource element group can be considered to adopt the same precoding.

As an embodiment, one technical effect of the above method is that: and establishing a relation between the actually used REG Bundle size and the number of REGs related to the same candidate parameter in the REG Bundle so as to ensure the performance of joint channel estimation and improve the robustness of PDCCH blind detection.

According to an aspect of the application, K3 is equal to 1, and the resource unit group includes all resource unit groups in the first time-frequency resource pool.

As an embodiment, one technical feature of the above method is that: and considering that the whole first time-frequency resource pool belongs to one REG Bundle, and performing corresponding joint channel estimation.

According to an aspect of the application, the K3 is greater than 1, any one of the K3 resource unit groups includes K4 resource unit groups, the K4 is a positive integer greater than 1, and the K4 is less than the K1.

As an embodiment, one technical feature of the above method is that: the K3 resource unit groups are similar to K3 REG Bundles indicated by the higher layer signaling, and K4 corresponds to the REG Bundle Size (Size) indicated by the higher layer signaling.

According to an aspect of the present application, the phrase that any resource unit included in the first time-frequency resource pool is associated with one candidate parameter of the M1 candidate parameters means that: a given resource unit is any one of the resource units comprised in the first time-frequency resource pool, the given resource unit being associated to a given candidate parameter of the M1 candidate parameters, the given candidate parameter being associated to a given candidate signal, a measurement for the given candidate signal being used for monitoring for the first signaling on the given resource unit.

As an embodiment, one technical feature of the above method is that: any RE in the first time-frequency resource pool is associated with a candidate parameter, and thus a TRP.

According to an aspect of the application, the K1 resource element groups are sequentially indexed, and the M1 candidate parameters are sequentially associated to the K1 resource element groups.

As an embodiment, one technical feature of the above method is that: any REG in the first pool of time-frequency resources is associated with a candidate parameter and thus a TRP.

As an embodiment, another technical feature of the above method is: the above method ensures that transmission between consecutive REGs is through different TRPs to achieve diversity gain.

According to an aspect of the application, a given resource element group is any one of the K1 resource element groups, the given resource element group including Q1 resource elements, the M1 candidate parameters being sequentially associated to the Q1 resource elements.

As an embodiment, one technical feature of the above method is that: the above method ensures that consecutive REs in one REG are transmitted through different TRPs to achieve diversity gain.

According to an aspect of the application, the K1 resource element groups are sequentially indexed, and the K1 resource element groups are mapped into the first time-frequency resource pool in a predefined manner.

As an embodiment, one technical feature of the above method is that: the mapping manner of the K1 resource element groups is fixed, so as to ensure that the first node can uniquely determine REs that can assume the same precoding in the first time-frequency resource pool.

According to an aspect of the present application, when there are two resource element groups with a time domain interval greater than a first threshold in the K3 resource element groups, the first node considers that all resource element groups included in any one of the K3 resource element groups cannot assume the same precoding.

According to an aspect of the present application, when there are two resource element groups of the K3 resource element groups whose frequency domain interval is greater than a second threshold, the first node considers that all resource element groups included in any one of the K3 resource element groups cannot assume the same precoding.

As an embodiment, the two methods are technically characterized in that: by setting a predefined threshold, when the indicated time domain or frequency domain resource spanned by one REG Bundle is too large, the first node will not consider that joint channel estimation based on the REG Bundle can be performed; to ensure the robustness of PDCCH blind detection.

According to one aspect of the application, comprising:

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

wherein the first signaling is used to indicate the second set of time-frequency resources.

According to one aspect of the application, comprising:

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

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

transmitting first information and second information, the first information being used to determine a first time-frequency resource pool and a first candidate parameter set;

transmitting first signaling in the first time-frequency resource pool;

wherein the first pool of time-frequency resources comprises K1 resource element groups, the first set of candidate parameters comprises M1 candidate parameters; the K1 is a positive integer greater than 1, the M1 is a positive integer greater than 1; each resource element group included in the first time-frequency resource pool includes a positive integer greater than 1, the first signaling occupies K2 resource element groups of K1 resource element groups included in the first time-frequency resource pool, and the K2 is a positive integer greater than 1 and not greater than K1; any resource unit included in the first time-frequency resource pool is associated with one candidate parameter in the M1 candidate parameters; the resource element groups comprised by the first time frequency resource pool are divided into K3 resource element groups, K3 being a positive integer, the second information being used to determine the number of resource element groups comprised by each of the K3 resource element groups; a first resource unit group is one of the K3 resource unit groups, and the second node employs the same precoding in resource units included in the first resource unit group that are associated to the same one of the M1 candidate parameters.

According to an aspect of the application, when there are two resource element groups of the K3 resource element groups having a time domain interval greater than a first threshold, the receiver of the first information comprises a first node that considers that all resource element groups comprised by any one of the K3 resource element groups cannot assume the same precoding.

According to an aspect of the application, when there are two resource element groups of the K3 resource element groups whose frequency domain spacing is larger than a second threshold, the receiver of the first information comprises a first node that considers that all resource element groups comprised by any one of the K3 resource element groups cannot assume the same precoding.

According to one aspect of the application, comprising:

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

According to one aspect of the application, comprising:

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

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

a first receiver that receives first information and second information, the first information being used to determine a first pool of time-frequency resources and a first set of candidate parameters;

a first transceiver to monitor for first signaling in the first pool of time-frequency resources;

wherein the first pool of time-frequency resources comprises K1 resource element groups, the first set of candidate parameters comprises M1 candidate parameters; the K1 is a positive integer greater than 1, the M1 is a positive integer greater than 1; each resource element group included in the first time-frequency resource pool includes a positive integer greater than 1, the first signaling occupies K2 resource element groups of K1 resource element groups included in the first time-frequency resource pool, and the K2 is a positive integer greater than 1 and not greater than K1; any resource unit included in the first time-frequency resource pool is associated with one candidate parameter in the M1 candidate parameters; the resource element groups comprised by the first time frequency resource pool are divided into K3 resource element groups, K3 being a positive integer, the second information being used to determine the number of resource element groups comprised by each of the K3 resource element groups; a first resource element group is one of the K3 resource element groups, the first node assuming the same precoding in the resource elements comprised by the first resource element group that are associated to the same one of the M1 candidate parameters.

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

a first transmitter to transmit first information and second information, the first information being used to determine a first pool of time-frequency resources and a first set of candidate parameters;

a second transceiver to transmit first signaling in the first time-frequency resource pool;

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

establishing a connection between the actually used REG Bundle size and the number of REGs associated to the same candidate parameter in the REG Bundle to ensure the performance of joint channel estimation and improve the robustness of PDCCH blind detection;

correlating consecutive REGs or REs to different candidate parameters to achieve diversity gain by employing different TRP transmissions;

by setting a predefined threshold, when the indicated time domain or frequency domain resource spanned by one REG Bundle is too large, the first node will not consider that joint channel estimation based on the REG Bundle can be performed; to ensure the robustness of PDCCH blind detection.

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 chart of a first signaling according to an embodiment of the application;

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

FIG. 7 shows a schematic diagram of a first pool of time-frequency resources according to an embodiment of the present application;

FIG. 8 shows a schematic diagram of a second node according to an embodiment of the present application;

fig. 9 shows a schematic diagram of 1 resource unit group according to an embodiment of the application;

FIG. 10 shows a schematic diagram of 1 resource unit group according to another embodiment of the present application;

fig. 11 shows a schematic diagram of the K1 resource element groups according to an embodiment of the application;

fig. 12 shows a schematic diagram of the K1 resource element groups according to another embodiment of the present application;

FIG. 13 shows a schematic diagram of the first threshold value according to an embodiment of the present application;

FIG. 14 shows a schematic diagram of the second threshold value according to an embodiment of the present application;

FIG. 15 shows a block diagram of a structure used in a first node according to an embodiment of the present application;

fig. 16 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 first information and second information in step 101, where the first information is used to determine a first time-frequency resource pool and a first candidate parameter set; first signaling is monitored in the first time-frequency resource pool in step 102.

In embodiment 1, the first time-frequency resource pool comprises K1 resource element groups, and the first candidate parameter set comprises M1 candidate parameters; the K1 is a positive integer greater than 1, the M1 is a positive integer greater than 1; each resource element group included in the first time-frequency resource pool includes a positive integer greater than 1, the first signaling occupies K2 resource element groups of K1 resource element groups included in the first time-frequency resource pool, and the K2 is a positive integer greater than 1 and not greater than K1; any resource unit included in the first time-frequency resource pool is associated with one candidate parameter in the M1 candidate parameters; the resource element groups comprised by the first time frequency resource pool are divided into K3 resource element groups, K3 being a positive integer, the second information being used to determine the number of resource element groups comprised by each of the K3 resource element groups; a first resource unit group is one of the K3 resource unit groups, the first node assuming the same precoding in resource units included in the first resource unit group that are associated to the same one of the M1 candidate parameters.

As an embodiment, the first information is transmitted in (Radio Resource Control ) signaling.

As an embodiment, the first information is transmitted in a Medium Access Control (Medium Access Control) CE (Control Element).

As an embodiment, the first information is ControlResourceSet in TS 38.331.

As an embodiment, the first information is SearchSpace in TS 38.331.

As an embodiment, the second information is transmitted in RRC signaling.

As an embodiment, the second information is transmitted in a MAC CE.

As an embodiment, the second information is precoding granularity.

As an embodiment, the first information and the second information are two ies (information elements) in two different RRC signaling respectively.

As an embodiment, the first information and the second information belong to two IEs in the same RRC signaling.

As an embodiment, when the K3 is greater than 1, the second information is precoding granularity.

As an embodiment, the second information is reg-BundleSize.

For one embodiment, when the K3 is equal to 1, the second information is reg-BundleSize.

As an embodiment, the second information indicates a number of multicarrier symbols occupied by the first time-frequency resource pool in a time domain.

As an embodiment, the number of multicarrier symbols occupied by the first time-frequency resource pool in the time domain is used to determine the number of resource element groups included in each of the K3 resource element groups.

As a sub-embodiment of this embodiment, the number of multicarrier symbols occupied by the first time-frequency resource pool in the time domain is equal to N1, N1 is a positive integer greater than 1, a given resource unit group is any resource unit group in the K3 resource unit groups, and the number of resource unit groups included in the given resource unit group is not greater than N1.

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 first node supports receiving DCI (Downlink Control Information) on a plurality of TRPs.

As one embodiment, the first node supports blind detection of PDCCH on multiple TRPs.

As an embodiment, the first node supports merging PDCCH detected on multiple TRPs.

As an embodiment, the first node supports repeated (Repetition) transmission of multiple PDCCHs receiving one DCI from multiple TRPs.

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

As an embodiment, the first time-frequency Resource pool is a CORESET (Control Resource Set).

As an embodiment, the first time-frequency resource pool is associated to a CORESET Identity (ID).

As an embodiment, the first time-frequency resource Pool is a CORESET Pool (Pool), and the CORESET Pool includes M1 CORESETs.

As an embodiment, the first time-frequency resource Pool is associated to a CORESET Pool Identity (ID).

As an embodiment, the first time-frequency resource pool is a Search Space (Search Space).

As an embodiment, the first time-frequency resource pool is associated to a search space Identification (ID).

As an example, the M1 is equal to 2.

For one embodiment, the first time-frequency resource pool is a search space pool, and the search space pool includes M1 search spaces.

As an embodiment, the first time-frequency resource pool is associated to a search space pool identity.

As an embodiment, the first time-frequency resource pool includes M2 CORESET, and the M2 is a positive integer greater than 1.

As a sub-embodiment of this embodiment, said M1 is equal to said M2, and said M1 candidate parameters are respectively associated to said M2 CORESET.

For one embodiment, the first pool of time-frequency resources includes M2 search spaces, the M2 being a positive integer greater than 1.

As a sub-implementation of this embodiment, the M1 is equal to the M2, and the M1 candidate parameters are associated to the M2 search spaces, respectively.

As an embodiment, the first time-frequency resource pool includes M2 CORESET pools, and the M2 is a positive integer greater than 1.

As a sub-embodiment of this embodiment, the M1 is equal to the M2, and the M1 candidate parameters are respectively associated to the M2 CORESET pools.

As one embodiment, the first time-frequency resource pool includes M2 Search Space sets (Search Space Set), the M2 being a positive integer greater than 1.

As a sub-implementation of this embodiment, the M1 is equal to the M2, and the M1 candidate parameters are associated to the M2 search space sets, respectively.

As one embodiment, the monitoring the first signaling includes: the first node blindly detects the first signaling.

As one embodiment, the monitoring the first signaling includes: the first node receives the first signaling.

As one embodiment, the monitoring the first signaling includes: the first node decodes the first signaling.

As an embodiment, the monitoring the first signaling comprises: the first node decodes the first signaling by coherent detection.

As one embodiment, the monitoring the first signaling includes: the first node decodes the first signaling by energy detection.

As an embodiment, the frequency domain resource occupied by the first signaling is between 450MHz and 6 GHz.

As an embodiment, the frequency domain resource occupied by the first signaling is between 24.25GHz and 52.6 GHz.

As an embodiment, the K1 Resource Element groups are K1 REGs (Resource Element Group ), respectively.

As an embodiment, any resource element group of the K1 resource element groups occupies 12 REs.

As an embodiment, any resource element group of the K1 resource element groups occupies one multicarrier symbol in the time domain and 12 consecutive subcarriers in the frequency domain.

As an embodiment, any resource element group of the K1 resource element groups occupies a plurality of consecutive multicarrier symbols in the time domain and a plurality of consecutive subcarriers in the frequency domain.

As an embodiment, the resource unit in this application occupies 1 continuous multicarrier symbol in the time domain and 1 subcarrier in the frequency domain.

As an embodiment, the first signaling is PDCCH.

As one embodiment, the first signaling is DCI.

As an embodiment, the first signaling is a downlink Grant (DL Grant).

As an embodiment, the first signaling is an uplink Grant (UL Grant).

As an embodiment, the first signaling is physical layer signaling.

As an embodiment, the M1 candidate parameters respectively correspond to M1 beamforming vectors.

As an embodiment, the M1 candidate parameters respectively correspond to M1 receive beamforming vectors.

As an embodiment, the M1 candidate parameters respectively correspond to M1 transmit beamforming vectors.

As one embodiment, the M1 candidate parameters are M1 TCI-State, respectively.

As one embodiment, the M1 candidate parameters respectively correspond to M1 TCI-StateId.

As an embodiment, the M1 candidate parameters respectively correspond to M1 candidate signals.

As a sub-embodiment of this embodiment, the given candidate signal is any one of the M1 candidate Signals, the given candidate signal includes a CSI-RS (Channel-State Information references Signals), or the given candidate signal includes an SSB (SS/PBCH Block, synchronization signal/physical broadcast Channel Block).

As a sub-implementation of this embodiment, any two of the M1 candidate signals are non-QCL.

As an embodiment, the K2 resource element groups occupied by the first signaling constitute one PDCCH Candidate (Candidate).

As an example, the K2 is equal to one of 6,12,24,48, 96.

As an embodiment, the K2 resource Element groups constitute P CCEs (Control Channel elements), and P is equal to one of 1,2,4,8 or 16.

As an embodiment, any one of the K3 resource unit groups (REG Cluster) includes K4 resource unit groups, and K4 is a positive integer greater than 1.

As a sub-embodiment of this embodiment, said K4 is equal to one of 2,3 or 6.

As a sub-embodiment of this embodiment, said K4 is equal to 12 or 24.

As a sub-example of this embodiment, the K4 is related to the value of the M1.

As a sub-embodiment of this embodiment, the K1 resource unit groups are sequentially ordered, and K4 resource unit groups included in any resource unit group of the K3 resource unit groups are all continuous.

As a sub-embodiment of this embodiment, the second information is used to indicate the K4.

As a sub-embodiment of this embodiment, the K1 is equal to the product of the K3 and the K4.

As a sub-embodiment of this embodiment, the K1 is a positive integer multiple of the K4.

As one example, the K1 is a positive integer multiple of the K3.

As an embodiment, any one of the K1 resource element groups belongs to one of the K3 resource element groups.

As an embodiment, a given resource unit group is any one of the K3 resource unit groups, the given resource unit group including K4 resource unit groups; the first node assumes that, of the K4 resource element groups comprised by the given resource element group, only positive integer number of resource element groups associated to the same one of the M1 candidate parameters employ the same precoding.

As an embodiment, a given resource unit group is any one of the K3 resource unit groups, the given resource unit group comprising Z resource units in total, Z being a positive integer greater than 1; the first node assumes that, of the Z resource elements comprised in the given resource element group, the same precoding is employed only in positive integer number of resource elements associated to the same one of the M1 candidate parameters.

As a sub-embodiment of this embodiment, Z is equal to 12.

As an embodiment, when K3 is not equal to 1, the first node does not assume that REs belonging to two different resource element groups of the K3 resource element groups can employ the same precoding.

As an embodiment, the first time-frequency resource pool is associated to T1 TRPs, the T1 being a positive integer greater than 1.

As a sub-embodiment of this embodiment, the T1 TRPs share the first pool of time frequency resources.

As a sub-embodiment of this embodiment, said T1 is equal to 2.

As a sub-embodiment of this embodiment, the T1 is equal to the M1, and the T1 TRPs are associated to the M1 candidate parameters, respectively.

As an embodiment, said first pool of time-frequency resources is associated to T1 pools of CORESET, said T1 being a positive integer greater than 1.

As a sub-embodiment of this embodiment, the T1 CORESET pools are associated to T1 TRPs, respectively.

As a sub-embodiment of this embodiment, any of the T1 CORESET pools includes at least one CORESET.

As a sub-embodiment of this embodiment, said T1 is equal to 2.

As a sub-embodiment of this embodiment, the T1 is equal to the M1, and the T1 CORESET pools are respectively associated to the M1 candidate parameters.

As one embodiment, the first pool of time-frequency resources is associated to T1 sets of search spaces, the T1 being a positive integer greater than 1.

As a sub-embodiment of this embodiment, the T1 search space sets are associated to T1 TRPs, respectively.

As a sub-embodiment of this embodiment, any one of the T1 search space sets includes at least one search space.

As a sub-embodiment of this embodiment, said T1 is equal to 2.

As a sub-implementation of this embodiment, the T1 is equal to the M1, and the T1 search space sets are associated to the M1 candidate parameters, respectively.

As an embodiment, the M1 candidate parameters are sequentially indexed.

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 UEs 201 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptops, Personal Digital Assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband internet of things equipment, machine-type communication equipment, land vehicles, automobiles, wearable equipment, 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 UE201 is a terminal supporting Massive MIMO (Massive multiple input multiple output).

As an embodiment, the UE201 is capable of receiving PDCCH on multiple TRPs.

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

As an embodiment, the gNB203 supports Massive MIMO (Massive multiple input multiple output).

As an embodiment, the gNB203 includes a plurality of TRPs.

As a sub-embodiment of this embodiment, the plurality of TRPs is used for transmission of a plurality of beams.

As a sub-embodiment of this embodiment, the plurality of TRPs are connected to each other via an X2 interface.

As a sub-embodiment of this embodiment, the plurality of TRPs are connected to each other via Ideal Backhaul.

As a sub-embodiment of this embodiment, the cooperation (Coordination) Delay (Delay) between the plurality of TRPs does not affect the dynamic scheduling.

As a sub-embodiment of this embodiment, the plurality of TRPs cooperate with each other through a unified scheduling processor.

As a sub-embodiment of this embodiment, the plurality of TRPs cooperate with each other through a unified baseband processor.

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

As an embodiment, the gNB203 may be capable of serving the first node on both an LTE-a carrier and an NR carrier.

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.

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 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 information is generated in the MAC352 or the MAC 302.

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

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

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

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.

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

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 first information and second information, the first information being used to determine a first pool of time-frequency resources and a first set of candidate parameters; and monitoring for first signaling in the first pool of time-frequency resources; the first pool of time-frequency resources comprises K1 resource element groups, the first set of candidate parameters comprises M1 candidate parameters; the K1 is a positive integer greater than 1, the M1 is a positive integer greater than 1; each resource element group included in the first time-frequency resource pool includes a positive integer greater than 1, the first signaling occupies K2 resource element groups of K1 resource element groups included in the first time-frequency resource pool, and the K2 is a positive integer greater than 1 and not greater than K1; any resource unit included in the first time-frequency resource pool is associated with one candidate parameter in the M1 candidate parameters; the resource element groups comprised by the first time frequency resource pool are divided into K3 resource element groups, K3 being a positive integer, the second information being used to determine the number of resource element groups comprised by each of the K3 resource element groups; a first resource element group is one of the K3 resource element groups, the first node assuming the same precoding in the resource elements comprised by the first resource element group that are associated to the same one of the M1 candidate parameters.

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 first information and second information, the first information being used to determine a first pool of time-frequency resources and a first set of candidate parameters; and monitoring for first signaling in the first pool of time-frequency resources; the first pool of time-frequency resources comprises K1 resource element groups, the first set of candidate parameters comprises M1 candidate parameters; the K1 is a positive integer greater than 1, the M1 is a positive integer greater than 1; each resource element group included in the first time-frequency resource pool includes a positive integer greater than 1, the first signaling occupies K2 resource element groups of K1 resource element groups included in the first time-frequency resource pool, and the K2 is a positive integer greater than 1 and not greater than K1; any resource unit included in the first time-frequency resource pool is associated with one candidate parameter in the M1 candidate parameters; the resource element groups comprised by the first time frequency resource pool are divided into K3 resource element groups, K3 being a positive integer, the second information being used to determine the number of resource element groups comprised by each of the K3 resource element groups; a first resource unit group is one of the K3 resource unit groups, the first node assuming the same precoding in resource units included in the first resource unit group that are associated to the same one of the M1 candidate parameters.

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: transmitting first information and second information, the first information being used to determine a first time-frequency resource pool and a first candidate parameter set; and transmitting first signaling in the first time-frequency resource pool; the first pool of time-frequency resources comprises K1 resource element groups, the first set of candidate parameters comprises M1 candidate parameters; the K1 is a positive integer greater than 1, the M1 is a positive integer greater than 1; each resource element group included in the first time-frequency resource pool includes a positive integer greater than 1, the first signaling occupies K2 resource element groups of K1 resource element groups included in the first time-frequency resource pool, and the K2 is a positive integer greater than 1 and not greater than K1; any resource unit included in the first time-frequency resource pool is associated with one candidate parameter in the M1 candidate parameters; the resource element groups comprised by the first time frequency resource pool are divided into K3 resource element groups, K3 being a positive integer, the second information being used to determine the number of resource element groups comprised by each of the K3 resource element groups; a first resource unit group is one of the K3 resource unit groups, and the second node employs the same precoding in resource units included in the first resource unit group that are associated to the same one of the M1 candidate parameters.

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: transmitting first information and second information, the first information being used to determine a first time-frequency resource pool and a first candidate parameter set; and transmitting first signaling in the first time-frequency resource pool; the first pool of time-frequency resources comprises K1 resource element groups, the first set of candidate parameters comprises M1 candidate parameters; the K1 is a positive integer greater than 1, the M1 is a positive integer greater than 1; each resource element group included in the first time-frequency resource pool includes a positive integer greater than 1, the first signaling occupies K2 resource element groups of K1 resource element groups included in the first time-frequency resource pool, and the K2 is a positive integer greater than 1 and not greater than K1; any resource unit included in the first time-frequency resource pool is associated with one candidate parameter in the M1 candidate parameters; the resource element groups comprised by the first time frequency resource pool are divided into K3 resource element groups, K3 being a positive integer, the second information being used to determine the number of resource element groups comprised by each of the K3 resource element groups; a first resource unit group is one of the K3 resource unit groups, and the second node employs the same precoding in resource units included in the first resource unit group that are associated to the same one of the M1 candidate parameters.

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

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

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

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

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

For one embodiment, 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 and second 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 and the second 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 monitor for first signaling in a first pool of time and frequency resources; at least the first four of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller/processor 475 are configured to send first signaling in a first pool of time and 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 first signal in a second set of time-frequency resources; at least the first four of the antennas 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 are configured to send the first signal in a second set of time-frequency resources.

As one implementation, at least the first four of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller/processor 459 are used to send a first signal in a second 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 second set of time-frequency resources.

Example 5

Embodiment 5 illustrates a flow chart of the first signaling, as shown in fig. 5. In FIG. 5, a first node U1 communicates with a second node N2 via a wireless link. Without conflict, the embodiment, sub-embodiment, and subsidiary embodiment in embodiment 5 can be applied to embodiment 6; the embodiment, the sub-embodiment, and the subsidiary embodiment in embodiment 6 can be applied to embodiment 5.

For theFirst node U1Receiving the first information and the second information in step S10; in the first step S11Monitoring a first signaling in a time frequency resource pool; the first signal is received in a second set of time-frequency resources in step S12.

For theSecond node N2Transmitting the first information and the second information in step S20; transmitting first signaling in the first time-frequency resource pool in step S21; the first signal is transmitted in a second set of time-frequency resources in step S22.

In embodiment 5, the first information is used to determine a first time-frequency resource pool and a first candidate parameter set; the first pool of time-frequency resources comprises K1 resource element groups, the first set of candidate parameters comprises M1 candidate parameters; the K1 is a positive integer greater than 1, the M1 is a positive integer greater than 1; each resource element group included in the first time-frequency resource pool includes a positive integer greater than 1, the first signaling occupies K2 resource element groups of K1 resource element groups included in the first time-frequency resource pool, and the K2 is a positive integer greater than 1 and not greater than K1; any resource unit included in the first time-frequency resource pool is associated with one candidate parameter in the M1 candidate parameters; the resource element groups comprised by the first time frequency resource pool are divided into K3 resource element groups, K3 being a positive integer, the second information being used to determine the number of resource element groups comprised by each of the K3 resource element groups; a first resource unit group is one of the K3 resource unit groups, the first node U1 assumes that the same precoding is employed in the resource units included in the first resource unit group that are associated with the same one of the M1 candidate parameters; the first signaling is used to indicate the second set of time-frequency resources.

As an embodiment, the first signaling is a Downlink Grant (DL Grant), and a Physical layer Channel carrying the first signaling includes a PDSCH (Physical Downlink Shared Channel).

As an embodiment, the first signaling is a Downlink Grant (DL Grant), and a transmission Channel carrying the first signal includes a DL-SCH (Downlink Shared Channel).

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

As an embodiment, K3 is equal to 1, and the resource unit group includes all resource unit groups in the first time-frequency resource pool.

As a sub-embodiment of this embodiment, when the second information indicates that precoding granularity is equal to allcontigousrbs, the K3 is equal to 1.

As a sub-embodiment of this embodiment, when the second information indicates that precoding granularity is equal to alloconteguiousrbs, the same precoding is used in resource units associated with the same candidate parameter of the M1 candidate parameters in all REs included in the first time-frequency resource pool.

As a sub-embodiment of this embodiment, when the second information indicates that precoding granularity is equal to alloconteguiousrbs, resource element groups of the K1 resource element groups that are associated to a same one of the M1 candidate parameters employ the same precoding.

As a sub-embodiment of this embodiment, when K1 is equal to 1, the resource unit group includes all resource units in the first time-frequency resource pool.

As a sub-embodiment of this embodiment, when K1 is equal to 1, the resource unit group and the first time-frequency resource pool are equivalent.

As a sub-embodiment of this embodiment, when K1 is equal to 1, the resource unit group and the first time-frequency resource pool occupy the same resource unit.

As an embodiment, the K3 is greater than 1, any one of the K3 resource unit groups includes K4 resource unit groups, the K4 is a positive integer greater than 1, and the K4 is less than the K1.

As a sub-embodiment of this embodiment, when the second information indicates that precoding granularity is equal to sameaasereg-Bundle, the K4 is greater than 1.

As a sub-embodiment of this embodiment, when the second information indicates that the precoding granularity is equal to sameaasereg-Bundle, the K4 is equal to a value corresponding to reg-Bundle size in TS 38.331.

As a sub-embodiment of this embodiment, when the second information indicates that precoding granularity is equal to sameaasereg-Bundle, the same precoding is used in resource elements associated with the same candidate parameter of the M1 candidate parameters included in the first resource element group.

As a sub-embodiment of this embodiment, when the second information indicates that precoding granularity is equal to sameaasereg-Bundle, resource element groups included in the first resource element group and associated with the same candidate parameter of the M1 candidate parameters use the same precoding.

As an embodiment, the phrase that any resource unit included in the first time-frequency resource pool is associated with one candidate parameter of the M1 candidate parameters means that: a given resource unit is any one of the resource units comprised in the first time-frequency resource pool, the given resource unit being associated to a given candidate parameter of the M1 candidate parameters, the given candidate parameter being associated to a given candidate signal, a measurement for the given candidate signal being used for monitoring of the given resource unit.

As a sub-embodiment of this embodiment, the first time-frequency resource pool includes L1 resource units, the L1 is a positive integer greater than 1, and the L1 resource units are sequentially associated into the M1 candidate parameters in a manner that a time domain is first and a frequency domain is second.

As a sub-implementation of this embodiment, the first time-frequency resource pool includes L1 resource units, the L1 is a positive integer greater than 1, and any two resource units adjacent in the time domain among the L1 resource units are respectively associated to two different candidate parameters.

As an embodiment, the K1 resource element groups are sequentially indexed, and the M1 candidate parameters are sequentially mapped onto the K1 resource element groups.

As a sub-embodiment of this embodiment, when the M1 candidate parameters are sequentially mapped to the K1 resource element groups, all resource elements included by any one of the K1 resource element groups are associated to one of the M1 candidate parameters.

As a sub-embodiment of this embodiment, the K1 resource element groups are sequentially associated into the M1 candidate parameters according to indexes.

As a sub-embodiment of this embodiment, two index-adjacent resource element groups of the K1 resource element groups are respectively associated to two index-consecutive candidate parameters of the M1 candidate parameters.

As a sub-embodiment of this embodiment, the K1 resource element groups are resource element group #0 through resource element group # (K1-1), respectively, and the M1 candidate parameters are candidate parameter #0 through candidate parameter # (M1-1), respectively

As an auxiliary embodiment of this sub-embodiment, the fact that the M1 candidate parameters are sequentially mapped onto the K1 resource element groups includes: the resource element group #0 is associated to the candidate parameter #0, the resource element group #1 is associated to the candidate parameter #1, and so on.

As an auxiliary embodiment of this sub-embodiment, the meaning that the M1 candidate parameters are sequentially mapped onto the K1 resource element groups includes: when the K1 is greater than the M1, the resource element group # (M1-1) is associated to the candidate parameter # (M1-1), the resource element group # M1 is associated to the candidate parameter #0, and so on.

As an embodiment, a given resource element group is any one of the K1 resource element groups, the given resource element group includes Q1 resource elements, and the M1 candidate parameters are sequentially mapped onto the Q1 resource elements.

As a sub-embodiment of this embodiment, a given resource element group is any one of the K1 resource element groups, the given resource element group comprising Q1 resource elements, and when the M1 candidate parameters are sequentially mapped onto the Q1 resource elements, any one of the K1 resource element groups is associated at least to two of the M1 candidate parameters.

As a sub-embodiment of this embodiment, the Q1 resource units included in the given resource unit group are sequentially ordered from low to high in the frequency domain, the Q1 resource units are resource unit #0 to resource unit # (Q1-1), the M1 candidate parameters are candidate parameter #0 to candidate parameter # (M1-1)

As an auxiliary embodiment of this sub-embodiment, the mapping of the M1 candidate parameters onto the Q1 resource elements in turn means that: the resource unit #0 is associated to the candidate parameter #0, the resource unit #1 is associated to the candidate parameter #1, and so on.

As an auxiliary embodiment of this sub-embodiment, the mapping of the M1 candidate parameters onto the Q1 resource units in turn means that: when the Q1 is greater than the M1, the resource unit # (M1-1) is associated to the candidate parameter # (M1-1), the resource unit # M1 is associated to the candidate parameter #0, and so on.

As an embodiment, the K1 resource element groups are sequentially indexed, and the K1 resource element groups are mapped into the first time-frequency resource pool in a predefined manner.

As a sub-embodiment of this embodiment, the phrase that the K1 resource element groups are mapped into the first time-frequency resource pool in a predefined manner includes: the K1 resource element groups are sequentially indexed in the first time-frequency resource pool according to a first time domain and a second frequency domain.

As a sub-embodiment of this embodiment, the above phrase that the K1 resource element groups are mapped into the first time-frequency resource pool in a predefined manner includes: the K1 resource element groups are sequentially indexed in the first time-frequency resource pool according to a first frequency domain and a second time domain.

As an embodiment, when there are two resource element groups with a time domain interval greater than a first threshold in the K3 resource element groups, the first node U1 considers that all resource element groups included in any one of the K3 resource element groups cannot assume the same precoding.

As a sub-embodiment of this embodiment, the first threshold is equal to W1, the W1 is a positive integer greater than 1.

As a sub-embodiment of this embodiment, the first threshold represents W1 multicarrier symbols.

As a sub-embodiment of this embodiment, the first threshold is fixed or the first threshold is predefined.

As a sub-embodiment of this embodiment, the first threshold is configured through higher layer signaling, and the higher layer signaling includes RRC signaling or MAC CE.

As a sub-embodiment of this embodiment, the phrase that two resource unit groups with time domain intervals larger than the first threshold exist in the K3 resource unit groups means that: a given resource unit group exists in the K3 resource unit groups, the given resource unit group includes a first resource unit group and a second resource unit group, and the number of multicarrier symbols between the multicarrier symbol occupied by the first resource unit group and the multicarrier symbol occupied by the second resource unit group is greater than the number of multicarrier symbols represented by the first threshold.

As an embodiment, when there are two resource element groups with a frequency domain interval greater than a second threshold in the K3 resource element groups, the first node considers that all resource element groups included in any one of the K3 resource element groups cannot assume the same precoding.

As a sub-embodiment of this embodiment, the second threshold is equal to W2, the W2 is a positive integer greater than 1.

As an auxiliary embodiment of this sub-embodiment, the first threshold represents a frequency bandwidth corresponding to W2 consecutive RBs (Resource Blocks).

As a sub-embodiment of this embodiment the second threshold is fixed or the first threshold is predefined.

As a sub-embodiment of this embodiment, the second threshold is configured through higher layer signaling, and the higher layer signaling includes RRC signaling or MAC CE.

As a sub-embodiment of this embodiment, the above phrase that there are two resource unit groups whose frequency domain interval is greater than the second threshold in the K3 resource unit groups means that: a given resource unit group exists in the K3 resource unit groups, the given resource unit group includes a third resource unit group and a fourth resource unit group, and the number of RBs between the RBs occupied by the third resource unit group and the RBs occupied by the fourth resource unit group is greater than the number of RBs represented by the second threshold.

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

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

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

As an embodiment, a CRC (Cyclic Redundancy Check) included in the first signaling is scrambled by a C-RNTI (Cell Radio Network Temporary Identifier) allocated to the first node U1.

As an embodiment, the first time-frequency resource pool comprises X1 alternative sets of time-frequency resources, the X1 being a positive integer greater than 1.

As a sub-embodiment of this embodiment, the X1 candidate time-frequency resource sets are X1 PDCCH candidates respectively, and the K2 resource element groups constitute one candidate time-frequency resource set of the X1 candidate time-frequency resource sets.

As a sub-embodiment of this embodiment, the first node U1 detects the first signaling in one of the X1 alternative sets of time-frequency resources.

As a sub-embodiment of this embodiment, the first node U1 detects information bits carried by the first signaling in multiple alternative time-frequency resource sets of the X1 alternative time-frequency resource sets, where the multiple alternative time-frequency resource sets include an alternative time-frequency resource set occupying the K2 resource element groups.

As a sub-embodiment of this embodiment, a given alternative time-frequency resource set is any one of the K1 alternative time-frequency resource sets, and for the given alternative time-frequency resource set, the first node U1 uses the C-RNTI assigned to the first node U1 to descramble the CRC demodulated by the given alternative time-frequency resource set to determine whether the given alternative time-frequency resource set carries the first signaling.

As a sub-embodiment of this embodiment, the second node N2 sends the first signaling in one of the X1 sets of alternative time frequency resources.

As a sub-embodiment of this embodiment, the second node N2 repeatedly sends the first signaling in multiple alternative sets of time-frequency resources among the X1 alternative sets of time-frequency resources.

As a sub-embodiment of this embodiment, the repeatedly sending the first signaling in multiple alternative time-frequency resource sets of the X1 alternative time-frequency resource sets includes: the second node N2 sends the first signaling in each of the multiple alternative sets of time-frequency resources.

As a sub-embodiment of this embodiment, said repeatedly sending said first signaling in multiple alternative sets of time-frequency resources among the X1 alternative sets of time-frequency resources means that: the second node N2 sends the same set of information in each of the multiple alternative sets of time-frequency resources, which is used to generate multiple first signaling, any of which can be independently demodulated.

As an additional embodiment of this sub-embodiment, the multiple alternative sets of time-frequency resources all use the same aggregation level.

As an additional embodiment of this sub-embodiment, at least two alternative time-frequency resource sets in the multiple alternative time-frequency resource sets employ different aggregation levels.

As an auxiliary embodiment of this sub-embodiment, the first time-frequency resource pool includes M1 resource sub-pools, at least two alternative time-frequency resource sets exist in the multiple alternative time-frequency resource sets, and the two alternative time-frequency resource sets are respectively located on two different resource sub-pools of the M1 resource sub-pools.

As an auxiliary embodiment of this sub-embodiment, the first time-frequency resource pool includes M1 resource sub-pools, the multiple alternative time-frequency resource sets are respectively located in multiple different resource sub-pools, and the multiple different resource sub-pools all belong to the first time-frequency resource pool.

Example 6

Embodiment 6 illustrates a flow chart of a first signal, as shown in fig. 6. In FIG. 6, the first node U3 communicates with the second node N4 via a wireless link; without conflict, the embodiment, the sub-embodiment, and the subsidiary embodiment in embodiment 6 can be applied to embodiment 5; on the contrary, the embodiment, the sub-embodiment, and the subsidiary embodiment in embodiment 5 can be applied to embodiment 6 without conflict.

For theFirst node U3Receiving the first information and the second information in step S30; monitoring for first signaling in the first pool of time-frequency resources in step S31; the first signal is transmitted in a second set of time-frequency resources in step S32.

For theSecond node N4Transmitting the first information and the second information in step S40; transmitting first signaling in the first time-frequency resource pool in step S41; the first signal is received in a second set of time-frequency resources in step S42.

In embodiment 6, the first information is used to determine a first pool of time-frequency resources and a first set of candidate parameters; the first pool of time-frequency resources comprises K1 resource element groups, the first set of candidate parameters comprises M1 candidate parameters; the K1 is a positive integer greater than 1, the M1 is a positive integer greater than 1; each resource element group included in the first time-frequency resource pool includes a positive integer greater than 1, the first signaling occupies K2 resource element groups of K1 resource element groups included in the first time-frequency resource pool, and the K2 is a positive integer greater than 1 and not greater than K1; any resource unit included in the first time-frequency resource pool is associated with one candidate parameter in the M1 candidate parameters; the resource element groups comprised by the first time frequency resource pool are divided into K3 resource element groups, K3 being a positive integer, the second information being used to determine the number of resource element groups comprised by each of the K3 resource element groups; a first resource unit group is one of the K3 resource unit groups, the first node U1 assumes that the same precoding is employed in resource units included in the first resource unit group that are associated with the same one of the M1 candidate parameters; the first signaling is used to indicate the second set of time-frequency resources.

As an embodiment, the first signaling is an Uplink Grant (UL Grant), and a Physical layer Channel carrying the first signaling includes a PUSCH (Physical Uplink Shared Channel).

As an embodiment, the first signaling is an Uplink Grant (UL Grant), and a transport layer Channel carrying the first signal includes an UL-SCH (Uplink Shared Channel).

Example 7

Embodiment 7 illustrates a schematic diagram of a first time-frequency resource pool, as shown in fig. 7. In fig. 7, a solid box in the figure identifies the first time-frequency resource pool, and a rectangular grid filled with oblique lines in the figure represents one resource element group, and the first time-frequency resource pool occupies K1 resource element groups.

As an embodiment, the first time-frequency resource pool occupies a positive integer of multicarrier symbols in the time domain, and occupies a frequency bandwidth corresponding to a long positive integer of RBs in the frequency domain.

As an embodiment, the first time-frequency resource pool includes M1 resource sub-pools, the M1 is a positive integer greater than 1, and the M1 resource sub-pools are respectively associated to M1 TRPs.

As a sub-embodiment of this embodiment, the M1 resource sub-pools are FDM (time Division Multiplexing).

As a sub-embodiment of this embodiment, the M1 resource sub-pools are TDM (Time Division Multiplexing).

As a sub-embodiment of this embodiment, the M1 resource sub-pools are respectively allocated to M1 TRPs.

As an embodiment, the first time-frequency resource pool is allocated to one base station.

As an embodiment, the first time-frequency resource pool is allocated to a Serving Cell (Serving Cell).

Example 8

Embodiment 8 illustrates a schematic diagram of a second node according to the present application; as shown in fig. 8. In fig. 8, the second node is associated to M1 TRPs; the M1 TRPs transmit wireless signals in M1 beamforming vectors shown in the figure, respectively.

As an embodiment, the M1 TRPs are associated to M1 candidate parameters, respectively.

As an embodiment, the M1 candidate parameters are respectively associated to M1 CSI-RS resources (resources).

As an embodiment, the M1 candidate parameters are associated to M1 SSB resources (resources), respectively.

As an embodiment, the M1 candidate parameters are respectively associated to M1 sets of CSI-RS resources, any one of the M1 sets of CSI-RS resources comprising a positive integer number of CSI-RS resources.

As an embodiment, the M1 candidate parameters are respectively associated to M1 SSB resource sets, and any SSB resource set of the M1 SSB resource sets includes a positive integer number of SSB resources.

As an example, the M1 TRPs are respectively associated to M1 TCI-State.

As an example, the M1 TRPs interact directly over the Ideal Backhaul link (Ideal Backhaul).

As an embodiment, the M1 TRPs are respectively associated to M1 CORESET pools, any of the M1 CORESET pools comprising a positive integer number of CORESETs.

As a sub-embodiment of this embodiment, the M1 CORESET pools respectively correspond to the M1 resource sub-pools.

As an example, the M1 TRPs are associated to M1 search spaces, respectively.

As a sub-embodiment of this embodiment, the M1 search spaces correspond to M1 resource sub-pools, respectively.

Example 9

Embodiment 9 illustrates a schematic diagram of a resource unit group according to the present application; as shown in fig. 9. In fig. 9, any one of the K3 resource unit groups includes K4 resource unit groups, the K4 resource unit groups are sequentially indexed from resource unit group #0 to resource unit group # (K4-1), a rectangular grid in the figure represents one resource unit group, and numbers in the rectangular grid represent indexes of the resource unit groups; m1 shown in the figure is equal to 2, and the M1 candidate parameters are candidate parameter # A and candidate parameter # B, respectively; as shown in the figure, the K4 resource element groups are sequentially associated to the candidate parameter # a and the candidate parameter # B according to the indexes; the dashed boxes in the figure represent the groups of resource units.

As an embodiment, the candidate parameter # a is associated to a first reference signal and the candidate parameter # B is associated to a second reference signal.

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

As a sub-embodiment of this embodiment, the second reference signal comprises CSI-RS, or the second reference signal comprises SSB.

As a sub-embodiment of this embodiment, the resource element group associated to the candidate parameter # a and the first reference signal are QCL.

As a sub-embodiment of this embodiment, the resource element group associated to the candidate parameter # B and the second reference signal are QCL.

As a sub-embodiment of this embodiment, measurements for the first reference signal are used for monitoring of a group of resource elements associated to the candidate parameter # a.

As a sub-embodiment of this embodiment, the measurement for the second reference signal is used for monitoring of the group of resource elements associated to the candidate parameter # B.

As an embodiment, the K1 is an odd number, the resource element group # (K1-1) being associated to the candidate parameter # a.

As an example, the K1 is an even number, the resource element group # (K1-1) is associated to the candidate parameter # B.

Example 10

Embodiment 10 illustrates a schematic diagram of another resource unit group according to the present application; as shown in fig. 10. In fig. 10, any one of the K3 resource unit groups includes K4 resource unit groups, a given resource unit group is any one of the K4 resource unit groups, the given resource unit group includes 12 resource units, a long rectangular lattice in the figure corresponds to the given resource unit group, a square in the illustrated long rectangular lattice represents one resource unit, and serial numbers in the square lattices represent that the 12 resource units included in the given resource unit group are sequentially ordered from #0 to # 11; m1 shown in the figure is equal to 2, and the M1 candidate parameters are candidate parameter # A and candidate parameter # B, respectively; the 12 resource units are sequentially associated to the candidate parameter # A and the candidate parameter # B according to indexes; the dashed boxes in the figure represent the groups of resource units.

As a sub-embodiment of this embodiment, the resource elements associated to the candidate parameter # a and the first reference signal are QCL.

As a sub-embodiment of this embodiment, the resource elements associated to the candidate parameter # B and the second reference signal are QCL.

As a sub-embodiment of this embodiment, measurements for the first reference signal are used for monitoring of resource units associated to the candidate parameter # a.

As a sub-embodiment of this embodiment, the measurement for the second reference signal is used for monitoring of resource units associated to the candidate parameter # B.

Example 11

Embodiment 11 illustrates an embodiment of a K1 resource element group diagram, as shown in fig. 11. In fig. 11, the first time-frequency resource pool occupies N1 multicarrier symbols in the time domain, occupies a frequency bandwidth corresponding to Y1 RBs in the frequency domain, the K1 is equal to the product of the N1 and the Y1, the N1 and the Y1 are both positive integers greater than 1, and the K1 resource element groups are sequentially indexed in the manner of the first time domain and the second frequency domain as shown in the figure; the rectangle number in the figure represents a resource unit group, and the number in the rectangle grid represents the index of the corresponding resource unit group; the dashed box in the figure represents the time frequency resources occupied by the first time frequency resource pool.

As an embodiment, the consecutive 6 resource element groups per index in the figure constitute one CCE.

Example 12

Embodiment 12 illustrates a K1 resource element group diagram of another embodiment, as shown in fig. 12. In fig. 12, the first time-frequency resource pool occupies N1 multicarrier symbols in the time domain, occupies a frequency bandwidth corresponding to Y1 RBs in the frequency domain, the K1 is equal to the product of the N1 and the Y1, the N1 and the Y1 are both positive integers greater than 1, and the K1 resource element groups are sequentially indexed in the manner of the first frequency domain and the second time domain as shown in the figure; the rectangle number in the figure represents a resource unit group, and the number in the rectangle grid represents the index of the corresponding resource unit group; the dotted line box in the figure represents the time frequency resources occupied by the first time frequency resource pool.

Example 13

Example 13 illustrates a schematic diagram of a first threshold value, as shown in fig. 13. In fig. 13, there is a given resource unit group in the K3 resource unit groups, where the given resource unit group includes a first resource unit group and a second resource unit group, and the number of multicarrier symbols between the multicarrier symbol occupied by the first resource unit group and the multicarrier symbol occupied by the second resource unit group is greater than the number of multicarrier symbols represented by the first threshold; in this case, the first node considers that all resource element groups included in any one of the K3 resource element groups cannot assume the same precoding.

Example 14

Example 14 illustrates a diagram of a second threshold value, as shown in fig. 14. A given resource unit group exists in the K3 resource unit groups, the given resource unit group includes a third resource unit group and a fourth resource unit group, and the number of RBs between the RBs occupied by the third resource unit group and the RBs occupied by the fourth resource unit group is greater than the number of RBs represented by the second threshold; in this case, the first node considers that all resource element groups included in any one of the K3 resource element groups cannot assume the same precoding.

Example 15

Embodiment 15 illustrates a block diagram of the structure in a first node, as shown in fig. 15. In fig. 15, a first node 1500 comprises a first receiver 1501 and a second transceiver 1502.

A first receiver 1501 receiving first information and second information, the first information being used to determine a first time-frequency resource pool and a first candidate parameter set;

a first transceiver 1502 that monitors the first pool of time-frequency resources for first signaling;

in embodiment 15, the first pool of time-frequency resources comprises K1 resource element groups, and the first candidate parameter set comprises M1 candidate parameters; the K1 is a positive integer greater than 1, the M1 is a positive integer greater than 1; each resource element group included in the first time-frequency resource pool includes a positive integer greater than 1, the first signaling occupies K2 resource element groups of K1 resource element groups included in the first time-frequency resource pool, and the K2 is a positive integer greater than 1 and not greater than K1; any resource unit included in the first time-frequency resource pool is associated with one candidate parameter in the M1 candidate parameters; the resource element groups included in the first time frequency resource pool are divided into K3 resource element groups, the K3 being a positive integer, the second information being used to determine the number of resource element groups included in each of the K3 resource element groups; a first resource unit group is one of the K3 resource unit groups, the first node assuming the same precoding in resource units included in the first resource unit group that are associated to the same one of the M1 candidate parameters. For one embodiment, the second transceiver 1902 receives a first signal in a second set of time-frequency resources; the first signaling is used for indicating the second time-frequency resource set, and the transmission mode adopted by the first signal is one of the Q1 transmission modes.

As an embodiment, the phrase that any resource unit included in the first time-frequency resource pool is associated with one candidate parameter of the M1 candidate parameters means that: a given resource unit is any one of the resource units comprised in the first time-frequency resource pool, the given resource unit being associated to a given candidate parameter of the M1 candidate parameters, the given candidate parameter being associated to a given candidate signal, a measurement for the given candidate signal being used for monitoring for the first signaling on the given resource unit.

As an embodiment, the K1 resource element groups are sequentially indexed, and the M1 candidate parameters are sequentially associated to the K1 resource element groups.

As an embodiment, a given resource element group is any one of the K1 resource element groups, the given resource element group includes Q1 resource elements, and the M1 candidate parameters are sequentially associated to the Q1 resource elements.

As an embodiment, when there are two resource element groups with a time domain interval greater than a first threshold in the K3 resource element groups, the first node considers that all resource element groups included in any one of the K3 resource element groups cannot assume the same precoding.

For one embodiment, the first transceiver 1502 receives a first signal in a second set of time-frequency resources; the first signaling is used to indicate the second set of time-frequency resources.

For one embodiment, the first transceiver 1502 transmits a first signal in a second set of time-frequency resources; the first signaling is used to indicate the second set of time-frequency resources.

For one embodiment, the first receiver 1501 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 second transceiver 1502 includes at least the first 6 of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, and the controller/processor 459 of embodiment 4.

Example 16

Embodiment 16 illustrates a block diagram of the structure in a second node, as shown in fig. 16. In fig. 16, the second node 1600 comprises a first transmitter 1601 and a second transceiver 1602.

A first transmitter 1601 to transmit first information and second information, the first information being used to determine a first time-frequency resource pool and a first candidate parameter set;

a second transceiver 1602, configured to transmit a first signaling in the first time-frequency resource pool;

in embodiment 16, the first pool of time-frequency resources comprises K1 resource element groups, the first candidate parameter set comprises M1 candidate parameters; the K1 is a positive integer greater than 1, the M1 is a positive integer greater than 1; each resource element group included in the first time-frequency resource pool includes a positive integer greater than 1, the first signaling occupies K2 resource element groups of K1 resource element groups included in the first time-frequency resource pool, and the K2 is a positive integer greater than 1 and not greater than K1; any resource unit included in the first time-frequency resource pool is associated with one candidate parameter in the M1 candidate parameters; the resource element groups comprised by the first time frequency resource pool are divided into K3 resource element groups, K3 being a positive integer, the second information being used to determine the number of resource element groups comprised by each of the K3 resource element groups; a first resource unit group is one of the K3 resource unit groups, and the second node employs the same precoding in resource units included in the first resource unit group that are associated to the same one of the M1 candidate parameters.

As an embodiment, when there are two resource element groups of the K3 resource element groups whose time domain interval is greater than a first threshold, the receiver of the first information includes a first node that considers that all resource element groups included in any one of the K3 resource element groups cannot assume the same precoding.

As an embodiment, when there are two resource element groups of the K3 resource element groups whose frequency domain interval is greater than the second threshold, the receiver of the first information includes a first node that considers that all resource element groups included in any one of the K3 resource element groups cannot assume the same precoding.

For one embodiment, the second transceiver 1602 transmits the first signal in a second set of time-frequency resources; the first signaling is used to indicate the second set of time-frequency resources.

For one embodiment, the second transceiver 1602 receives a first signal in a second set of time-frequency resources; the first signaling is used to indicate the second set of time-frequency resources.

For one embodiment, the first transmitter 1601 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 second transceiver 1602 includes at least the first 6 of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, and the controller/processor 475 in embodiment 4.

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

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

Claims

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

2. The first node of claim 1, wherein K3 is equal to 1, and wherein the resource unit group comprises all resource unit groups in the first time-frequency resource pool.

3. The first node of claim 1, wherein K3 is greater than 1, wherein any one of the K3 resource unit groups comprises K4 resource unit groups, wherein K4 is a positive integer greater than 1, and wherein K4 is less than the K1.

4. The first node according to any of claims 1 to 3, wherein the meaning that any resource element comprised in the first time-frequency resource pool is associated to one of the M1 candidate parameters comprises: a given resource unit is any one of the resource units comprised in the first time-frequency resource pool, the given resource unit being associated to a given candidate parameter of the M1 candidate parameters, the given candidate parameter being associated to a given candidate signal, a measurement for the given candidate signal being used for monitoring for the first signaling on the given resource unit.

5. The first node according to any of claims 1 to 4, wherein the K1 resource element groups are indexed sequentially, and the M1 candidate parameters are sequentially associated to the K1 resource element groups.

6. The first node according to any one of claims 1 to 4, wherein a given resource element group is any one of the K1 resource element groups, the given resource element group comprising Q1 resource elements, the M1 candidate parameters being sequentially associated to the Q1 resource elements, the Q1 being larger than the M1.

7. The first node according to any of claims 1 to 6, wherein the K1 resource element groups are sequentially indexed, the K1 resource element groups being mapped into the first time-frequency resource pool in a predefined manner.

8. The first node according to any of claims 1-7, wherein when there are two resource element groups of the K3 resource element groups with a time domain interval greater than a first threshold, the first node considers that all resource element groups comprised by any of the K3 resource element groups cannot assume the same precoding.

9. The first node according to any of claims 1-8, wherein when there are two resource element groups of the K3 resource element groups whose frequency domain spacing is larger than a second threshold, the first node considers that all resource element groups comprised by any of the K3 resource element groups cannot assume the same precoding.

10. The first node according to any of claims 1-9, wherein the first transceiver operates a first signal in a second set of time-frequency resources; the operation is a reception or the operation is a transmission; the first signaling is used to indicate the second set of time-frequency resources.

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

12. The second node according to claim 11, wherein K3 is equal to 1, and wherein the resource unit group comprises all resource unit groups in the first time-frequency resource pool.

13. The second node as claimed in claim 11 or 12, wherein K3 is greater than 1, any one of the K3 resource unit groups comprises K4 resource unit groups, the K4 is a positive integer greater than 1, and the K4 is less than the K1.

14. The second node according to any of claims 11 to 13, wherein the meaning that any resource element comprised in the first time-frequency resource pool is associated to one of the M1 candidate parameters comprises: a given resource unit is any one of the resource units comprised in the first time-frequency resource pool, the given resource unit being associated to a given candidate parameter of the M1 candidate parameters, the given candidate parameter being associated to a given candidate signal, a measurement for the given candidate signal being used for monitoring for the first signaling on the given resource unit.

15. The second node according to any of claims 11 to 14, wherein the K1 resource element groups are indexed sequentially, and the M1 candidate parameters are sequentially associated to the K1 resource element groups.

16. The second node according to any of claims 11 to 15, wherein a given resource element group is any one of said K1 resource element groups, said given resource element group comprising Q1 resource elements, said M1 candidate parameters being sequentially associated to said Q1 resource elements, said Q1 being larger than said M1.

17. The second node according to any of claims 11 to 16, characterized in that the K1 resource element groups are indexed sequentially, the K1 resource element groups being mapped into the first time-frequency resource pool in a predefined manner.

18. Second node according to any of claims 11-17, wherein when there are two resource element groups of the K3 resource element groups having a time domain spacing larger than a first threshold, the receiver of the first information comprises the first node considering that all resource element groups comprised by any of the K3 resource element groups cannot assume the same precoding.

19. Second node according to any of claims 11-18, wherein when there are two resource element groups of the K3 resource element groups having a frequency domain spacing larger than a second threshold, the receiver of the first information comprises the first node considering that all resource element groups comprised by any of the K3 resource element groups cannot assume the same precoding.

20. The second node according to any of claims 11-19, wherein the second transceiver transmits a first signal in a second set of time-frequency resources; the first signaling is used to indicate the second set of time-frequency resources.

21. The second node according to any of claims 11-20, wherein the second transceiver receives a first signal in a second set of time-frequency resources; the first signaling is used to indicate the second set of time-frequency resources.

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

monitoring for first signaling in the first pool of time-frequency resources;

23. The method in a first node according to claim 22, wherein said K3 is equal to 1, and wherein said group of resource elements comprises all resource element groups in said first time-frequency resource pool.

24. The method in a first node according to claim 22 or 23, wherein said K3 is larger than 1, wherein any one of said K3 resource unit groups comprises K4 resource unit groups, wherein said K4 is a positive integer larger than 1, and wherein said K4 is smaller than said K1.

25. The method in a first node according to any of claims 22-24, wherein associating any resource element comprised in the first pool of time-frequency resources to one of the M1 candidate parameters comprises: a given resource unit is any one of the resource units comprised in the first time-frequency resource pool, the given resource unit being associated to a given candidate parameter of the M1 candidate parameters, the given candidate parameter being associated to a given candidate signal, a measurement for the given candidate signal being used for monitoring for the first signaling on the given resource unit.

26. The method in a first node according to any of claims 22-25, wherein said K1 resource element groups are indexed sequentially, said M1 candidate parameters being sequentially linked to said K1 resource element groups.

27. The method in a first node according to any of claims 22-26, wherein a given resource element group is any one of the K1 resource element groups, the given resource element group comprising Q1 resource elements, the M1 candidate parameters being sequentially associated onto the Q1 resource elements, the Q1 being larger than the M1.

28. The method in the first node according to any of claims 22-27, wherein said K1 resource element groups are indexed sequentially, said K1 resource element groups being mapped into said first time-frequency resource pool in a predefined way.

29. Method in a first node according to any of the claims 22-28, characterized in that when there are two resource element groups of the K3 resource element groups having a time domain interval larger than a first threshold, the first node considers that all resource element groups comprised by any of the K3 resource element groups cannot assume the same precoding.

30. The method in the first node according to any of claims 22-29, wherein when there are two resource element groups of the K3 resource element groups whose frequency domain spacing is larger than a second threshold, the first node considers that all resource element groups comprised by any of the K3 resource element groups cannot assume the same precoding.

31. A method in a first node according to any of claims 22-30, comprising:

operating the first signal in a second set of time-frequency resources; the operation is a reception or the operation is a transmission;

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

transmitting first signaling in the first time-frequency resource pool;

33. A method in a second node according to claim 32, wherein K3 is equal to 1, and wherein the resource element group comprises all resource element groups in the first time-frequency resource pool.

34. A method in a second node according to claim 32 or 33, wherein said K3 is larger than 1, any one of said K3 resource unit groups comprises K4 resource unit groups, said K4 is a positive integer larger than 1, and said K4 is smaller than said K1.

35. The method in the second node according to any of claims 32 to 34, wherein associating any resource element comprised in the first pool of time-frequency resources to one of the M1 candidate parameters comprises: a given resource unit is any one of the resource units comprised in the first time-frequency resource pool, the given resource unit being associated to a given candidate parameter of the M1 candidate parameters, the given candidate parameter being associated to a given candidate signal, a measurement for the given candidate signal being used for monitoring for the first signaling on the given resource unit.

36. The method in a second node according to any of claims 32 to 35, wherein said K1 resource element groups are indexed sequentially, said M1 candidate parameters being sequentially associated to said K1 resource element groups.

37. The method in the second node according to any of claims 32 to 36, wherein a given resource element group is any one of the K1 resource element groups, the given resource element group comprising Q1 resource elements, the M1 candidate parameters being sequentially associated onto the Q1 resource elements, the Q1 being larger than the M1.

38. The method in the second node according to any of claims 32 to 37, wherein said K1 resource element groups are indexed sequentially, said K1 resource element groups being mapped into said first time-frequency resource pool in a predefined way.

39. The method in a second node according to any of claims 32-38, wherein when there are two resource element groups of the K3 resource element groups with a time domain spacing larger than a first threshold, the receiver of the first information comprises a first node that considers that all resource element groups comprised by any of the K3 resource element groups cannot assume the same precoding.

40. The method in the second node according to any of claims 32-39, wherein when there are two resource element groups of the K3 resource element groups with a frequency domain spacing larger than a second threshold, the receiver of the first information comprises the first node considering that all resource element groups comprised by any of the K3 resource element groups cannot assume the same precoding.

41. A method in a second node according to any of claims 32-40, comprising:

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

42. A method in a second node according to any of claims 32-41, comprising:

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