CN111988757B - Method and apparatus in a node used for wireless communication - Google Patents

Method and apparatus in a node used for wireless communication Download PDF

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Publication number
CN111988757B
CN111988757B CN201910424700.6A CN201910424700A CN111988757B CN 111988757 B CN111988757 B CN 111988757B CN 201910424700 A CN201910424700 A CN 201910424700A CN 111988757 B CN111988757 B CN 111988757B
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time
information
frequency resource
frequency
resource block
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CN111988757A (en
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吴克颖
张晓博
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Shanghai Langbo Communication Technology Co Ltd
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Shanghai Langbo Communication Technology Co Ltd
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Priority to CN201910424700.6A priority Critical patent/CN111988757B/en
Priority to PCT/CN2020/088862 priority patent/WO2020233405A1/en
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Priority to US17/529,284 priority patent/US20220077970A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method and apparatus in a node used for wireless communication is disclosed. A first node monitors first information in a first time-frequency resource pool; performing channel sensing in a first group of time-frequency resources and obtaining a first measurement value; and when the first measurement value is larger than a target threshold value, judging that a second time-frequency resource block does not belong to a first candidate resource block set, otherwise, judging that the second time-frequency resource block belongs to the first candidate resource block set. The first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used for indicating whether a first transmission block is correctly received, and the second time-frequency resource block comprises the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first pool of time-frequency resources; the first group of time-frequency resources is associated with the second group of time-frequency resources. The method ensures the transmission reliability of the PSFCH and improves the resource utilization rate.

Description

Method and apparatus in a node used for wireless communication
Technical Field
The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission method and apparatus related to a Sidelink (Sidelink) in wireless communication.
Background
In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In order to meet different performance requirements of various application scenarios, research on New Radio interface (NR) technology (or fine Generation, 5G) is decided over 72 sessions of 3GPP (3rd Generation Partner Project) RAN (Radio Access Network), and standardization Work on NR is started over WI (Work Item) where NR passes through 75 sessions of 3GPP RAN.
The 3GPP has also started to initiate standards development and research work under the NR framework for the rapidly evolving Vehicle-to-evolution (V2X) service. The 3GPP has completed the work of making the requirements for the 5G V2X service and has written the standard TS 22.886. The 3GPP defines a 4-large application scenario group (Use Case Groups) for the 5G V2X service, including: automatic queuing Driving (Vehicles platform), Extended sensing (Extended Sensors), semi/full automatic Driving (Advanced Driving) and Remote Driving (Remote Driving). NR-based V2X technical research has been initiated over 3GPP RAN #80 congress.
Disclosure of Invention
Compared with the existing LTE (Long-term Evolution) V2X system, the NR V2X has a significant feature of supporting unicast and multicast and supporting HARQ (Hybrid Automatic Repeat reQuest) function. A PSFCH (Physical Sidelink Feedback Channel) Channel is introduced for HARQ Feedback on the secondary link. In order to ensure the reliability of HARQ feedback, in the Mode NR V2X Mode (Mode)2, when a UE (User Equipment) selects resources according to channel sensing for V2X transmission, the impact on the PSFCH channel needs to be considered.
In view of the above, the present application discloses 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. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
The application discloses a method in a first node used for wireless communication, characterized by comprising:
monitoring first information in a first time-frequency resource pool;
executing channel sensing in a first time-frequency resource group, and obtaining a first measured value;
when the first measurement value is larger than a target threshold value, judging that the second time-frequency resource block does not belong to the first candidate resource block set; when the first measurement value is not larger than the target threshold value, judging that the second time-frequency resource block belongs to the first candidate resource block set;
wherein the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used to indicate whether a first transport block is correctly received, and the second time-frequency resource block includes the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first pool of time-frequency resources; the first group of time-frequency resources is associated with the second group of time-frequency resources.
As an embodiment, the problem to be solved by the present application includes: in NR V2X Mode (Mode)2, how to design channel sensing and resource selection to reduce interference on the PSFCH channel. The above method solves this problem by selecting different power detection thresholds depending on whether or not a PSFCH channel exists on the candidate resource.
As an embodiment, the above method is characterized in that: the second time frequency resource block is a candidate resource, and the target threshold is used to determine whether the second time frequency resource block needs to be excluded. The first node selects a different target threshold depending on whether the second time-frequency resource block includes a PSFCH channel. The method has the advantages that the method realizes the differential protection of the PSFCH and the PSSCH (Physical Sidelink Shared Channel), and ensures that the PSFCH has higher transmission reliability.
According to one aspect of the application, the first set of time-frequency resources is related to whether the first information is detected in the first pool of time-frequency resources.
As an embodiment, the above method is characterized in that: when the first information is detected in the first time-frequency resource pool, the first time-frequency resource group comprises the time-frequency resources occupied by the first transmission block. The method has the advantages that whether the candidate resource carrying the PSFCH is excluded is determined according to the receiving power of the PSSCH corresponding to the PSFCH, and the accuracy of channel sensing is improved.
According to one aspect of the application, the method is characterized by comprising the following steps:
detecting first signaling in the first pool of time-frequency resources;
wherein the first node detects the first information in the first time-frequency resource pool, and the first signaling carries the first information.
According to one aspect of the present application, the first signaling indicates the first set of time-frequency resources; the first transport block is transmitted within the first set of time-frequency resources.
According to one aspect of the present application, first reference signals are transmitted within the first set of time-frequency resources; a measurement for the first reference signal is used to generate the first measurement.
According to one aspect of the application, the method is characterized by comprising the following steps:
selecting M candidate resource blocks in the first set of candidate resource blocks, M being a positive integer;
transmitting a first signal in the M candidate resource blocks;
wherein the first set of candidate resource blocks includes M0 candidate resource blocks, any one of the M candidate resource blocks being one of the M0 candidate resource blocks; m0 is a positive integer not less than M.
According to one aspect of the application, the method is characterized by comprising the following steps:
receiving second information;
wherein the second information indicates that a second group of time-frequency resources is reserved; the second time-frequency resource block and the second time-frequency resource block are non-orthogonal.
According to one aspect of the application, the method is characterized by comprising the following steps:
executing the channel perception in a third time-frequency resource group, and obtaining a second measurement value;
when the second measurement value is larger than a third threshold value, judging that a fourth time frequency resource block does not belong to the first candidate resource block set; when the second measurement value is not greater than the third threshold value, judging that the fourth time-frequency resource block belongs to the first candidate resource block set;
wherein the first information is detected in the first pool of time-frequency resources; the third time-frequency resource group belongs to the second time-frequency resource group, and the fourth time-frequency resource block and the second time-frequency resource group are non-orthogonal; and the third time frequency resource block and the fourth time frequency resource block are orthogonal in a time frequency domain.
As an embodiment, the above method is characterized in that: and the fourth time frequency resource block and the third time frequency resource block respectively comprise a part which does not carry the PSFCH and a part which carries the PSFCH in a time slot or a subframe in a time domain. The method has the advantages of reducing the granularity of channel sensing and resource selection and improving the resource utilization rate.
According to one aspect of the application, the method is characterized by comprising the following steps:
receiving third information;
wherein the third information is used to determine the first time-frequency resource pool.
According to one aspect of the application, the first node is a user equipment.
According to an aspect of the application, it is characterized in that the first node is a relay node.
The application discloses a method in a second node used for wireless communication, characterized by comprising:
sending first information in a first time-frequency resource pool, or abandoning to send the first information in the first time-frequency resource pool;
wherein the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used to indicate whether a first transport block is correctly received, and a second time-frequency resource block includes the third time-frequency resource block; channel sensing performed in a first group of time-frequency resources is used to determine a first measurement value; when the first measurement value is larger than a target threshold value, the second time-frequency resource block is judged not to belong to a first candidate resource block set; when the first measurement value is not larger than the target threshold value, the second time-frequency resource block is judged to belong to the first candidate resource block set; the target threshold is related to whether the first information is transmitted in the first time-frequency resource pool; the first group of time-frequency resources is associated with the second group of time-frequency resources.
According to one aspect of the present application, the first set of time-frequency resources is related to whether the first information is transmitted in the first pool of time-frequency resources.
According to one aspect of the application, the method is characterized by comprising the following steps:
transmitting first signaling in the first time-frequency resource pool;
the second node sends the first information in the first time-frequency resource pool, and the first signaling carries the first information.
According to one aspect of the present application, the first signaling indicates the first set of time-frequency resources; the first transport block is transmitted within the first set of time-frequency resources.
According to one aspect of the application, the method is characterized by comprising the following steps:
transmitting a first reference signal within the first set of time-frequency resources;
wherein measurements for the first reference signal are used to generate the first measurement value.
According to one aspect of the application, the method is characterized by comprising the following steps:
sending the second information;
wherein the second information indicates that a second group of time-frequency resources is reserved; the second time-frequency resource block and the second time-frequency resource block are non-orthogonal.
According to one aspect of the application, the second node is a user equipment.
According to an aspect of the application, it is characterized in that the second node is a relay node.
The application discloses a first node device used for wireless communication, characterized by comprising:
the first receiver monitors first information in a first time-frequency resource pool, executes channel perception in the first time-frequency resource pool and obtains a first measured value;
the first processor is used for judging that the second time-frequency resource block does not belong to the first candidate resource block set when the first measured value is larger than a target threshold value; when the first measurement value is not larger than the target threshold value, judging that the second time-frequency resource block belongs to the first candidate resource block set;
wherein the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used to indicate whether a first transport block is correctly received, and the second time-frequency resource block includes the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first pool of time-frequency resources; the first group of time-frequency resources is associated with the second group of time-frequency resources.
The present application discloses a second node device used for wireless communication, comprising:
the second processor sends first information in a first time-frequency resource pool, or abandons sending the first information in the first time-frequency resource pool;
wherein the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used to indicate whether a first transport block is correctly received, and a second time-frequency resource block includes the third time-frequency resource block; channel sensing performed in a first group of time-frequency resources is used to determine a first measurement value; when the first measurement value is larger than a target threshold value, the second time-frequency resource block is judged not to belong to a first candidate resource block set; when the first measurement value is not larger than the target threshold value, the second time-frequency resource block is judged to belong to the first candidate resource block set; the target threshold is related to whether the first information is transmitted in the first time-frequency resource pool; the first group of time-frequency resources is associated with the second group of time-frequency resources.
As an example, compared with the conventional scheme, the method has the following advantages:
different power detection threshold values are selected according to whether the PSFCH channel exists on the candidate resources, so that the differential protection of the PSFCH and the PSSCH is realized, and the higher transmission reliability of the PSFCH channel is ensured.
Whether the candidate resource carrying the PSFCH is excluded is determined according to the receiving power of the PSSCH corresponding to the PSFCH, and the accuracy of channel sensing is improved.
The granularity of channel sensing and resource selection is reduced, and the resource utilization rate is improved.
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 shows a flowchart of monitoring first information, obtaining a first measurement value, and determining whether a second time-frequency resource block belongs to a first candidate resource block set according to an embodiment of the present application;
FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;
figure 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;
FIG. 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;
FIG. 5 shows a flow diagram of a transmission according to an embodiment of the present application;
FIG. 6 shows a schematic diagram of a first pool of time-frequency resources according to an embodiment of the present application;
FIG. 7 illustrates a schematic diagram of a given group of time-frequency resources, according to an embodiment of the present application;
figure 8 shows a schematic diagram of a given resource block according to an embodiment of the present application;
fig. 9 shows a schematic diagram of a target threshold and whether first information is detected in a first pool of time-frequency resources according to an embodiment of the application;
fig. 10 shows a schematic diagram of a target threshold and whether first information is detected in a first pool of time-frequency resources according to an embodiment of the application;
FIG. 11 illustrates a schematic diagram of associating a first group of time-frequency resources with a second group of time-frequency resources according to an embodiment of the present application;
FIG. 12 shows a schematic diagram of a first set of time-frequency resources and whether first information is detected in a first pool of time-frequency resources according to one embodiment of the present application;
figure 13 shows a schematic diagram of first signaling and first information according to an embodiment of the present application;
figure 14 shows a schematic diagram of a first signaling indicating a first set of time-frequency resources according to one embodiment of the present application;
FIG. 15 shows a schematic diagram of a first reference signal according to an embodiment of the present application;
FIG. 16 shows a schematic diagram of a first set of candidate resource blocks and M candidate resource blocks according to an embodiment of the application;
FIG. 17 illustrates a diagram of second information and a second group of time-frequency resources, according to an embodiment of the present application;
FIG. 18 shows a schematic diagram of a third group of time-frequency resources, a fourth group of time-frequency resources and a third group of time-frequency resources according to an embodiment of the present application;
FIG. 19 shows a schematic diagram of a third group of time-frequency resources, a fourth group of time-frequency resources, and a third group of time-frequency resources according to an embodiment of the present application;
FIG. 20 shows a schematic diagram of third information according to an embodiment of the present application;
FIG. 21 shows a block diagram of a processing apparatus for use in a first node device, according to an embodiment of the present application;
fig. 22 shows a block diagram of a processing arrangement for a device in a second node according to an embodiment of the application.
Detailed Description
The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.
Example 1
Embodiment 1 illustrates a flowchart of monitoring first information, obtaining a first measurement value, and determining whether a second time-frequency resource block belongs to a first candidate resource block set according to an embodiment of the present application, as shown in fig. 1. In 100 shown in fig. 1, each block represents a step. In particular, the order of steps in blocks does not represent a particular chronological relationship between the various steps.
In embodiment 1, the first node in this application monitors first information in a first time-frequency resource pool in step 101; performing channel sensing in a first group of time-frequency resources and obtaining a first measurement value in step 102; in step 103, when the first measurement value is greater than the target threshold, it is determined that the second time-frequency resource block does not belong to the first candidate resource block set; and when the first measurement value is not larger than the target threshold value, judging that the second time-frequency resource block belongs to the first candidate resource block set. Wherein the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used to indicate whether a first transport block is correctly received, and the second time-frequency resource block includes the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first pool of time-frequency resources; the first group of time-frequency resources is associated with the second group of time-frequency resources.
As one embodiment, the first information is dynamic information.
As one embodiment, the first information is information of layer 1 (L1).
As one embodiment, the first information is control information of layer 1 (L1).
As an embodiment, the first information is carried by physical layer signaling.
As one embodiment, the first information is carried by layer 1(L1) signaling.
As an embodiment, the first information is carried by layer 1(L1) control signaling.
As an embodiment, the first Information includes SCI (Sidelink Control Information).
For one embodiment, the first information includes one or more fields in one SCI.
For one embodiment, the first information includes information carried by one or more fields in one SCI.
As an embodiment, the first information is transferred by multicast (Groupcast).
As one embodiment, the first information is transmitted by Unicast (Unicast).
As an embodiment, the first information is transmitted on a SideLink (SideLink).
As an example, the first information is transmitted through a PC5 interface.
As one embodiment, the phrase monitoring the first information includes: and monitoring the signaling carrying the first information.
As one embodiment, the phrase monitoring the first information includes: the first signaling in this application is monitored.
As one embodiment, the phrase monitoring the first information includes: monitoring the signaling, and judging whether the detected signaling carries the first information.
As a sub-embodiment of the above embodiment, the signaling is layer 1(L1) control signaling.
As a sub-embodiment of the above embodiment, the signaling comprises SCI.
As a sub-embodiment of the above embodiment, the signaling comprises one or more fields in one SCI.
As an embodiment, the monitoring refers to receiving based on energy detection, that is, sensing (Sense) the energy of the wireless signal in the first time-frequency resource pool, and averaging to obtain the received energy. If the received energy is larger than a second given threshold value, judging that the first information is detected; otherwise, the first information is judged not to be detected.
As an embodiment, the monitoring refers to coherent reception, that is, coherent reception is performed in the first time-frequency resource pool, and energy of a signal obtained after the coherent reception is measured. If the energy of the signal obtained after the coherent reception is greater than a first given threshold value, judging that the first information is detected; otherwise, the first information is judged not to be detected.
As an embodiment, the monitoring refers to coherent reception, that is, coherent reception is performed in the first time-frequency resource pool, and energy of a signal obtained after the coherent reception is measured. If the energy of the signal obtained after the coherent reception is larger than a first given threshold value, judging that a given signaling is detected, and if the given signaling carries the first information, judging that the first information is detected; and if the energy of the signal obtained after the coherent reception is not greater than the first given threshold value or the given signaling does not carry the first information, otherwise, judging that the first information is not detected.
As an embodiment, the monitoring refers to blind detection, that is, receiving a signal in the first time-frequency resource pool and performing a decoding operation, and if it is determined that the decoding is correct according to a Cyclic Redundancy Check (CRC) bit, determining that the first information is detected; otherwise, the first information is judged not to be detected.
As an embodiment, the monitoring refers to blind detection, that is, receiving a signal in the first time-frequency resource pool and performing a decoding operation, if it is determined that the decoding is correct according to CRC bits, determining that a given signaling is detected, and if the given signaling carries the first information, determining that the first information is detected; and if the decoding error is determined according to the CRC bit or the given signaling does not carry the first information, otherwise, judging that the first information is not detected.
As one embodiment, the channel sensing includes sensing.
As one embodiment, the channel sensing includes energy detection, i.e., sensing (Sense) the energy of the wireless signal and averaging to obtain an average received energy.
As one embodiment, the channel sensing includes power detection, i.e., sensing (Sense) the power of the wireless signal and averaging to obtain an average received power.
As an embodiment, the channel sensing includes coherent detection, i.e. coherent reception, and the average energy of the signal obtained after the coherent reception is measured.
As an embodiment, the channel sensing includes coherent detection, i.e. coherent reception, and the average power of the signal obtained after the coherent reception is measured.
For one embodiment, the first measurement value comprises RSRP (Reference Signal Received Power).
As one embodiment, the first measurement value includes L1 (layer 1) -RSRP.
For one embodiment, the first measurement value comprises RSRQ (Reference Signal Received Quality).
As an embodiment, the first measurement value includes a CQI (Channel Quality Indicator).
As an embodiment, the first measurement value comprises RSSI (Received Signal Strength Indicator).
As one example, the unit of the first measurement value is watts (Watt).
As one embodiment, the target threshold is in units of watts.
As an example, the first measurement is in dBm (decibels).
As one embodiment, the target threshold is in dBm.
As an embodiment, the target threshold is related to a first set of priorities, the first set of priorities comprising a positive integer number of priorities (priorities).
As one embodiment, the first set of priorities includes 2 priorities (priorities).
As an embodiment, the first set of priorities comprises only one Priority (Priority).
As one embodiment, the first set of priorities includes priorities of the first transport blocks.
As an embodiment, the second group of time-frequency resources in this application is reserved for K3 transport blocks, where K3 is a positive integer; the first set of priorities comprises priorities of the K3 transport blocks.
As an embodiment, the signaling carrying the second information in this application indicates a first priority, and the first priority set includes the first priority.
As an embodiment, the first set of priorities comprises priorities of the first signals in the present application.
As an embodiment, the first signaling in this application indicates the priority of the first transport block.
As an embodiment, the first information explicitly indicates that the third time-frequency resource block is reserved for the first control information.
As an embodiment, the first information implicitly indicates that the third time-frequency resource block is reserved for the first control information.
As an embodiment, the first control information includes HARQ-ACK (Hybrid Automatic Repeat reQuest-Acknowledgement).
As one embodiment, the first control Information includes CSI (Channel State Information).
As an embodiment, the first control information is transmitted on a SideLink (SideLink).
As an example, the first control information is transmitted through a PC5 interface.
As an embodiment, the first control information is transmitted over the PSFCH.
As an embodiment, the first Control information is transmitted on a PSCCH (Physical Sidelink Control Channel).
As an embodiment, the first control information is transmitted on a psch.
As an embodiment, the reserving the sentence third time-frequency resource block for the first control information includes: the third time-frequency resource block is reserved for information bits included by the first control information.
As an embodiment, the reserving the sentence third time-frequency resource block for the first control information includes: the third time-frequency resource block is reserved for transmission of wireless signals carrying the first control information.
As an embodiment, the reserving the sentence third time-frequency resource block for the first control information includes: a sender of the first control information need not perform the channel sensing before sending the first control information within the third block of time-frequency resources.
For one embodiment, the first transport block comprises a tb (transport block).
As an embodiment, the time-frequency resources occupied by the first transport block belong to the first set of time-frequency resources.
As an embodiment, the time-frequency resources occupied by the first transport block do not belong to the first set of time-frequency resources.
As an embodiment, the first node detects the first information in the first time-frequency resource pool, and the time-frequency resources occupied by the first transport block belong to the first time-frequency resource group.
As an embodiment, the first node detects the first information in the first time-frequency resource pool, and the time-frequency resources occupied by the first transport block do not belong to the first time-frequency resource group.
As one embodiment, the first transport block is transported on a SideLink (SideLink).
As an example, the first transport block is transported through a PC5 interface.
As an embodiment, the first transport block is transmitted on a psch.
As an embodiment, the second time-frequency resource block is independent of whether the first information is detected in the first pool of time-frequency resources.
As an embodiment, the second time-frequency resource block relates to whether the first information is detected in the first pool of time-frequency resources.
As an embodiment, the length of the time domain resource occupied by the second time-frequency resource block when the first information is detected in the first time-frequency resource pool is smaller than the length of the time domain resource occupied by the second time-frequency resource block when the first information is not detected in the first time-frequency resource pool.
As an embodiment, the second time-frequency resource block includes the third time-frequency resource block and a fourth time-frequency resource block, and the third time-frequency resource block and the fourth time-frequency resource block are orthogonal in a time-frequency domain.
As a sub-embodiment of the foregoing embodiment, the third time-frequency resource block and the fourth time-frequency resource block are orthogonal in a time domain.
As a sub-embodiment of the foregoing embodiment, the fourth time-frequency resource block is earlier in the time domain than the third time-frequency resource block.
As a sub-embodiment of the foregoing embodiment, an ending time of the fourth time-frequency resource block is not later than a starting time of the third time-frequency resource block.
As a sub-embodiment of the foregoing embodiment, the third time-frequency resource block and the fourth time-frequency resource block are non-orthogonal in a time domain.
As a sub-embodiment of the foregoing embodiment, the fourth time-frequency resource block and the third time-frequency resource block occupy the same frequency domain resource.
As a sub-embodiment of the foregoing embodiment, the frequency domain resource occupied by the fourth time frequency resource block includes the frequency domain resource occupied by the third time frequency resource block.
As an embodiment, the second time frequency resource block is the third time frequency resource block.
As an embodiment, the second time frequency resource block and the third time frequency resource block are completely overlapping.
As an embodiment, the first set of time-frequency resources is independent of whether the first information is detected in the first pool of time-frequency resources.
As an embodiment, the first information is transmitted on a PUCCH (Physical Uplink Control CHannel).
As an embodiment, the first information is transmitted on the PSCCH.
Example 2
Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in fig. 2.
Fig. 2 illustrates a network architecture 200 of LTE (Long-Term Evolution), LTE-a (Long-Term Evolution Advanced) and future 5G systems. The network architecture 200 of LTE, LTE-a and future 5G systems is referred to as EPS (Evolved Packet System) 200. The EPS200 may include one or more UEs (User Equipment) 201, and one UE241 in Sidelink (Sidelink) communication with the UE201, an NG-RAN (next generation radio access network) 202, a 5G-CN (5G-Core network)/EPC (Evolved Packet Core) 210, an HSS (Home Subscriber Server) 220, and an internet service 230. The EPS200 may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown in fig. 2, the EPS200 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. The NG-RAN202 includes NR (New Radio ) node bs (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gNB203 may be connected to other gnbs 204 via an X2 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 (point of transmission reception), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5G-CN/EPC 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a gaming console, a drone, an aircraft, a narrowband physical network device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the 5G-CN/EPC210 through an S1 interface. The 5G-CN/EPC210 includes an MME (Mobility Management Entity)/AMF (Authentication Management domain)/UPF (User Plane Function) 211, other MMEs/AMFs/UPFs 214, S-GW (Service Gateway) 212, and P-GW (Packet data Network Gateway) 213. MME/AMF/UPF211 is a control node that handles signaling between UE201 and 5G-CN/EPC 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 internet, intranet, IMS (IP Multimedia Subsystem) and Packet switching (Packet switching) services.
As an embodiment, the first node in the present application includes the UE 201.
As an embodiment, the first node in this application includes the UE 241.
As an embodiment, the second node in this application includes the UE 241.
As an embodiment, the second node in the present application includes the UE 201.
As an embodiment, the air interface between the UE201 and the gNB203 is a Uu interface.
For one embodiment, the wireless link between the UE201 and the gNB203 is a cellular network link.
For one embodiment, the air interface between the UE201 and the UE241 is a PC-5 interface.
As an embodiment, the wireless link between the UE201 and the UE241 is a Sidelink (Sidelink).
As an embodiment, the first node in this application and the second node in this application are respectively one terminal within the coverage of the gNB 203.
As an embodiment, the first node in this application is a terminal in the coverage of the gNB203, and the second node in this application is a terminal outside the coverage of the gNB 203.
As an embodiment, the first node in this application is a terminal outside the coverage of the gNB203, and the second node in this application is a terminal inside the coverage of the gNB 203.
As an embodiment, the first node in the present application and the second node in the present application are respectively a terminal outside the coverage of the gNB 203.
As an embodiment, Unicast (Unicast) transmission is supported between the UE201 and the UE 241.
As an embodiment, Broadcast (Broadcast) transmission is supported between the UE201 and the UE 241.
As an embodiment, the UE201 and the UE241 support multicast (Groupcast) transmission.
As an embodiment, the sender of the first information in the present application includes the UE 201.
As an embodiment, the receiver of the first information in this application includes the UE 241.
As an embodiment, the sender of the first information in this application includes the UE 241.
As an embodiment, the receiver of the first information in the present application includes the UE 201.
Example 3
Embodiment 3 illustrates 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, as shown in fig. 3.
Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the UE and the gNB 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 UE and the gNB through PHY 301. In the user plane, 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 gNB on the network side. Although not shown, the UE may have several protocol layers above the L2 layer 305, including a network layer (e.g., IP layer) that terminates at the P-GW213 on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.). The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides header compression for upper layer packets to reduce radio transmission overhead, security by ciphering the packets, and handover support for UEs between gnbs. 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 (Hybrid Automatic Repeat reQuest). 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 among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and the gNB is substantially the same for the physical layer 301 and the L2 layer 305, but without the header compression function for the control plane. The Control plane also includes an RRC (Radio Resource Control) sublayer 306 in layer 3 (layer L3). The RRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configures the lower layers using RRC signaling between the gNB and the UE.
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 first information in this application is generated in the PHY 301.
As an embodiment, the first information in this application is generated in the MAC sublayer 302.
As an embodiment, the first signaling in this application is generated in the PHY 301.
As an embodiment, the first signaling in this application is generated in the MAC sublayer 302.
As an embodiment, the first reference signal in this application is generated in the PHY 301.
As an example, the first signal in this application is generated in the PHY 301.
As an embodiment, the second information in this application is generated in the PHY 301.
As an embodiment, the second information in this application is generated in the MAC sublayer 302.
As an embodiment, the third information in this application is generated in the RRC sublayer 306.
Example 4
Embodiment 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application, as shown in fig. 4. Fig. 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.
The first communications 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.
The second 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.
In the transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer data packets from the core network are provided to the controller/processor 475. The controller/processor 475 implements the functionality of layer L2. In the DL, the controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the second communication device 450 based on various priority metrics. The controller/processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the second communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 450, as well as constellation mapping 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 parallel streams. Transmit processor 416 then maps each parallel stream to subcarriers, multiplexes the modulated symbols 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 first communications device 410 to the second communications device 450, at the second communications device 450, each receiver 454 receives a signal through its respective antenna 452. 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 parallel streams destined for the second communication device 450. The symbols on each parallel stream are demodulated and recovered in 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 first communication 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 the DL, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer data 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. The controller/processor 459 is also responsible for error detection using an Acknowledgement (ACK) and/or Negative Acknowledgement (NACK) protocol to support HARQ operations.
In a transmission from the second communications device 450 to the first communications device 410, a data source 467 is used at the second 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 transmit function at the first communications apparatus 410 described in the DL, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the first communications apparatus 410, implementing L2 layer functions for the user plane and the control plane. The controller/processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to said first 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 resulting parallel streams are then modulated by the transmit processor 468 into multi-carrier/single-carrier symbol streams, subjected to analog precoding/beamforming in the multi-antenna transmit processor 457, and provided to different antennas 452 via a transmitter 454. 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 second communication device 450 to the first communication device 410, the functionality at the first communication device 410 is similar to the receiving functionality at the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives 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. 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 second communication device 450. Upper layer data packets from the controller/processor 475 may be provided to a core network. Controller/processor 475 is also responsible for error detection using the ACK and/or NACK protocol to support HARQ operations.
As an embodiment, the second communication device 450 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 450 apparatus at least: monitoring the first information in the present application in the first time-frequency resource pool in the present application; executing the channel sensing in the present application in the first time-frequency resource group in the present application, and obtaining the first measurement value in the present application; when the first measurement value is larger than a target threshold value, judging that the second time-frequency resource block in the application does not belong to the first candidate resource block set in the application; and when the first measurement value is not larger than the target threshold value, judging that the second time-frequency resource block belongs to the first candidate resource block set. Wherein the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used to indicate whether a first transport block is correctly received, and the second time-frequency resource block includes the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first pool of time-frequency resources; the first group of time-frequency resources is associated with the second group of time-frequency resources.
As an embodiment, the second 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: monitoring the first information in the present application in the first time-frequency resource pool in the present application; executing the channel sensing in the present application in the first time-frequency resource group in the present application, and obtaining the first measurement value in the present application; when the first measurement value is larger than a target threshold value, judging that the second time-frequency resource block in the application does not belong to the first candidate resource block set in the application; and when the first measurement value is not larger than the target threshold value, judging that the second time-frequency resource block belongs to the first candidate resource block set. Wherein the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used to indicate whether a first transport block is correctly received, and the second time-frequency resource block includes the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first pool of time-frequency resources; the first group of time-frequency resources is associated with the second group of time-frequency resources.
As an embodiment, the first communication device 410 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 first communication device 410 means at least: the first information in the present application is sent in the first time-frequency resource pool in the present application, or the first information is released from being sent in the first time-frequency resource pool. Wherein the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used to indicate whether a first transport block is correctly received, and a second time-frequency resource block includes the third time-frequency resource block; channel sensing performed in a first group of time-frequency resources is used to determine a first measurement value; when the first measurement value is larger than a target threshold value, the second time-frequency resource block is judged not to belong to a first candidate resource block set; when the first measurement value is not larger than the target threshold value, the second time-frequency resource block is judged to belong to the first candidate resource block set; the target threshold is related to whether the first information is transmitted in the first time-frequency resource pool; the first group of time-frequency resources is associated with the second group of time-frequency resources.
As an embodiment, the first communication device 410 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: the first information in the present application is sent in the first time-frequency resource pool in the present application, or the first information is released from being sent in the first time-frequency resource pool. Wherein the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used to indicate whether a first transport block is correctly received, and a second time-frequency resource block includes the third time-frequency resource block; channel sensing performed in a first group of time-frequency resources is used to determine a first measurement value; when the first measurement value is larger than a target threshold value, the second time-frequency resource block is judged not to belong to a first candidate resource block set; when the first measurement value is not larger than the target threshold value, the second time-frequency resource block is judged to belong to the first candidate resource block set; the target threshold is related to whether the first information is transmitted in the first time-frequency resource pool; the first group of time-frequency resources is associated with the second group of time-frequency resources.
As an embodiment, the second node in this application comprises the first communication device 410.
As an embodiment, the first node in this application comprises the second communication device 450.
As one example, at least one of { the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459, the memory 460, the data source 467} is used to monitor the first information in this application in the first pool of time-frequency resources in this application; at least one of the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller/processor 475, the memory 476 is used to transmit the first information in this application in the first pool of time-frequency resources in this application.
As an embodiment, at least one of the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458 is used to perform the channel sensing and obtain the first measurement in the first set of time-frequency resources in the present application.
As an embodiment, at least one of the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller/processor 459 is configured to determine whether the second time-frequency resource block belongs to the first candidate resource block set.
For one embodiment, at least one of the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459, the memory 460, and the data source 467 is configured to receive the first reference signal from the first set of time-frequency resources.
As an example, at least one of { the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller/processor 475, the memory 476} is used to transmit the first reference signal in this application within the first set of time-frequency resources in this application.
As an example, at least one of the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller/processor 459, the memory 460, the data source 467 is used to select the M candidate resource blocks in this application among the first set of candidate resource blocks in this application.
As one example, at least one of the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller/processor 459, the memory 460, the data source 467 is used to transmit the first signal in the M candidate resource blocks in this application.
As an example, at least one of { the antenna 420, the receiver 418, the reception processor 470, the multi-antenna reception processor 472, the controller/processor 475, the memory 476} is used to receive the first signal in this application.
As one example, at least one of the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller/processor 459, the memory 460, and the data source 467 may be configured to receive the second information described herein.
As one example, at least one of { the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller/processor 475, the memory 476} is used to transmit the second information in this application.
As an embodiment, at least one of the antennas 452, the receiver 454, the receive processor 456, and the multi-antenna receive processor 458 is used for performing the channel sensing and obtaining the second measurement in the third group of time-frequency resources in the present application.
As an embodiment, at least one of the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459 is configured to determine whether the fourth time frequency resource block belongs to the first candidate resource block set.
As one example, at least one of the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller/processor 459, the memory 460, and the data source 467 may be configured to receive the third information herein.
Example 5
Embodiment 5 illustrates a flow chart of wireless transmission according to an embodiment of the present application, as shown in fig. 5. In fig. 5, the second node U1, the first node U2, the third node U3, and the fourth node U4 are each communication nodes that communicate over the air interface between each other. In fig. 5, the steps in blocks F51 through F511, respectively, are optional.
The second node U1, in step S5101, sends the first information in the first time-frequency resource pool; transmitting the second information in step S5102; transmitting a first reference signal within a first set of time-frequency resources in step S5103; the first signal is received in step S5104.
The first node U2, receiving the third information in step S5201; monitoring first information in a first time-frequency resource pool in step S521; detecting the first information in the first pool of time-frequency resources in step S5202; receiving the second information in step S5203; performing channel sensing in the first set of time-frequency resources and obtaining a first measurement value in step S522; in step S523, it is determined whether the second time-frequency resource block belongs to the first candidate resource block set; in step S5204, the channel sensing is performed in the third time-frequency resource group to obtain a second measurement value; in step S5205, it is determined whether the fourth time frequency resource block belongs to the first candidate resource block set; selecting M candidate resource blocks in the first candidate resource block set in step S5206; in step S5207, a first signal is transmitted in the M candidate resource blocks.
The third node U3, which transmits the second information in step S5301; transmitting a first reference signal within the first set of time-frequency resources in step S5302; the first signal is received in step S5303.
The fourth node U4, in step S5401, transmits the third information.
In embodiment 5, when the first measurement value is greater than a target threshold, the first node U2 determines that the second time-frequency resource block does not belong to the first candidate resource block set; when the first measurement value is not greater than the target threshold value, the first node U2 determines that the second time-frequency resource block belongs to the first candidate resource block set. The first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used for indicating whether a first transmission block is correctly received, and the second time-frequency resource block comprises the third time-frequency resource block; the target threshold is related to whether the first node U2 detected the first information in the first pool of time-frequency resources; the first group of time-frequency resources is associated with the second group of time-frequency resources. The second information indicates that a second time-frequency resource group is reserved; the second time-frequency resource block and the second time-frequency resource block are non-orthogonal. The third time-frequency resource group belongs to the second time-frequency resource group, and the fourth time-frequency resource block and the second time-frequency resource group are non-orthogonal; and the third time frequency resource block and the fourth time frequency resource block are orthogonal in a time frequency domain. The third information is used by the first node U2 to determine the first pool of time-frequency resources.
As an example, the first node U2 is the first node in this application.
As an example, the second node U1 is the second node in this application.
For one embodiment, the air interface between the second node U1 and the first node U2 is a PC5 interface.
As an embodiment, the air interface between the second node U1 and the first node U2 includes a Sidelink (Sidelink).
For one embodiment, the air interface between the second node U1 and the first node U2 comprises a wireless interface between user equipment and user equipment.
As an embodiment, the air interface between the second node U1 and the first node U2 comprises a wireless interface between a user equipment and a relay node.
For one embodiment, the air interface between the third node U3 and the first node U2 is a PC5 interface.
As an embodiment, the air interface between the third node U3 and the first node U2 comprises a Sidelink (Sidelink).
For one embodiment, the air interface between the third node U3 and the first node U2 comprises a wireless interface between user equipment and user equipment.
As an embodiment, the air interface between the third node U3 and the first node U2 comprises a wireless interface between a user equipment and a relay node.
For one embodiment, the air interface between the first node U2 and the fourth node U4 is a Uu interface.
For one embodiment, the air interface between the first node U2 and the fourth node U4 includes a Downlink (Downlink) and an Uplink (Uplink).
As an example, the third node U3 is a user equipment.
As an embodiment, the third node U3 is a relay node.
For one embodiment, the fourth node U4 is a base station.
As an embodiment, the fourth node U4 is a relay node.
As an embodiment, the first set of time-frequency resources is related to whether the first information is detected in the first pool of time-frequency resources.
For one embodiment, the first node U2 detects first signaling in the first pool of time-frequency resources; the first signaling carries the first information.
As one embodiment, the first signaling indicates the first set of time-frequency resources; the first transport block is transmitted within the first set of time-frequency resources.
As one embodiment, the measurements for the first reference signal are used by the first node U2 to generate the first measurement value.
As an embodiment, the first set of candidate resource blocks includes M0 candidate resource blocks, any one of the M candidate resource blocks being one of the M0 candidate resource blocks.
As an embodiment, when the second measurement value is greater than a third threshold, the first node U2 determines that the fourth time frequency resource block does not belong to the first candidate resource block set; when the second measurement value is not greater than the third threshold value, the first node U2 determines that the fourth time frequency resource block belongs to the first candidate resource block set.
As an example, the steps in blocks F53 and F54 in fig. 5 cannot exist simultaneously.
As an embodiment, the sender of the second information is the second node U1.
As an embodiment, the sender of the second information is the third node U3.
As an example, the steps in blocks F56 and F57 in fig. 5 cannot exist simultaneously.
As an embodiment, the sender of the first reference signal is the second node U1.
As an embodiment, the sender of the first reference signal is the third node U3.
Example 6
Embodiment 6 illustrates a schematic diagram of a first time-frequency resource pool according to an embodiment of the present application; as shown in fig. 6. In embodiment 6, the first time-frequency Resource pool includes a positive integer number of REs (Resource elements).
As an embodiment, one RE occupies one multicarrier symbol in the time domain and one subcarrier in the frequency domain.
As an embodiment, the multicarrier symbol is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.
As an embodiment, the multicarrier symbol is an SC-FDMA (Single Carrier-Frequency Division Multiple Access) symbol.
As an embodiment, the multicarrier symbol is a DFT-S-OFDM (Discrete Fourier Transform Spread OFDM) symbol.
As an embodiment, the first pool of time-frequency resources comprises a positive integer number of multicarrier symbols in the time domain.
As an embodiment, the first pool of time-frequency resources comprises a positive integer number of non-contiguous multicarrier symbols in the time domain.
For one embodiment, the first time-frequency resource pool includes a positive integer number of slots (slots) in a time domain.
For one embodiment, the first pool of time-frequency resources includes a positive integer number of discontinuous time slots in the time domain.
As one embodiment, the first pool of time-frequency resources includes a positive integer number of sub-frames (sub-frames) in the time domain.
For one embodiment, the first pool of time-frequency resources includes a positive integer number of subcarriers in the frequency domain.
As an embodiment, the first time-frequency resource pool includes a positive integer number of PRBs (Physical resource blocks) in a frequency domain.
As an embodiment, the first pool of time-frequency resources includes a positive integer number of consecutive PRBs in the frequency domain.
As an embodiment, the first time-frequency resource pool includes a positive integer number of discontinuous PRBs in a frequency domain.
As an embodiment, the first time-frequency resource pool includes a positive integer number of sub-channels (sub-channels) in a frequency domain.
As an embodiment, the first time-frequency resource pool is configured by higher layer (higher layer) signaling.
As an embodiment, the first pool of time-frequency resources is predefined.
As an embodiment, the first time-frequency resource pool is pre-configured.
As an embodiment, the first pool of time-frequency resources occurs multiple times in the time domain.
As an embodiment, the first time-frequency resource pool occurs only once in the time domain.
Example 7
Embodiment 7 illustrates a schematic diagram of a given group of time-frequency resources according to one embodiment of the present application; as shown in fig. 7. In embodiment 7, the given time-frequency resource group is any one of the first time-frequency resource group, the second time-frequency resource group, and the third time-frequency resource group in this application.
For one embodiment, the given group of time-frequency resources includes a positive integer number of REs.
As an embodiment, the given group of time-frequency resources comprises a positive integer number of multicarrier symbols in the time domain.
As an embodiment, the given group of time-frequency resources comprises a positive integer number of non-contiguous multicarrier symbols in the time domain.
As an embodiment, the given group of time-frequency resources comprises a positive integer number of slots (slots) in the time domain.
As an embodiment, the given group of time-frequency resources comprises a positive integer number of non-contiguous slots (slots) in the time domain.
As one embodiment, the given group of time-frequency resources includes a positive integer number of subframes (sub-frames) in the time domain.
As an embodiment, the given group of time-frequency resources occurs multiple times in the time domain.
As a sub-embodiment of the above-described embodiment, the given group of time-frequency resources is equally spaced between any two adjacent occurrences in the time domain.
As an embodiment, the given group of time-frequency resources occurs only once in the time domain.
As an embodiment, the given group of time-frequency resources comprises a positive integer number of subcarriers in the frequency domain.
As an embodiment, the given group of time-frequency resources comprises a positive integer number of PRBs in the frequency domain.
As an embodiment, the given group of time-frequency resources comprises a positive integer number of sub-channels (sub-channels) in the frequency domain.
As an embodiment, the given group of time-frequency resources belongs to a perceptual time window (sensing window) in the time domain.
As an embodiment, the given set of time-frequency resources is the first set of time-frequency resources.
As an embodiment, the given group of time-frequency resources is the second group of time-frequency resources.
As an embodiment, the given group of time-frequency resources is the third group of time-frequency resources.
Example 8
Embodiment 8 illustrates a schematic diagram of a given resource block according to an embodiment of the present application; as shown in fig. 8. In embodiment 8, the given resource block is any one of the M0 candidate resource blocks, the second time-frequency resource block, the third time-frequency resource block, and the fourth time-frequency resource block in this application.
As an embodiment, the given resource block includes a positive integer number of REs.
As an embodiment, the given resource block comprises a positive integer number of multicarrier symbols in the time domain.
As an embodiment, the given resource block includes a positive integer number of slots in the time domain.
As an embodiment, the given resource block comprises one slot in the time domain.
As an embodiment, the given resource block comprises a positive integer number of subframes in the time domain.
As an embodiment, the given resource block includes one subframe in the time domain.
As an embodiment, the given resource block comprises a positive integer number of subcarriers in the frequency domain.
As an embodiment, the given resource block comprises a positive integer number of PRBs in the frequency domain.
As an embodiment, the given resource block comprises a positive integer number of consecutive PRBs in the frequency domain.
As an embodiment, the given resource block comprises a positive integer number of non-contiguous PRBs in the frequency domain.
As an embodiment, the given resource block includes a positive integer number of subchannels in the frequency domain.
As an embodiment, the given resource block belongs to a selection window (selection window) in the time domain.
As an embodiment, two of the M0 candidate resource blocks include unequal numbers of REs.
As an embodiment, any two candidate resource blocks of the M0 candidate resource blocks include equal number of REs.
As an embodiment, the given resource block is any one of the M0 candidate resource blocks.
As an embodiment, the given resource block is the second time-frequency resource block.
As an embodiment, the given resource block is the third time-frequency resource block.
As an embodiment, the given resource block is the fourth time-frequency resource block.
Example 9
Embodiment 9 illustrates a schematic diagram of a target threshold and whether first information is detected in a first time-frequency resource pool according to an embodiment of the present application; as shown in fig. 9. In embodiment 9, the target threshold is a first threshold when the first information is detected in the first pool of time-frequency resources; the target threshold is a second threshold when the first information is not detected in the first pool of time-frequency resources; the first threshold is not equal to the second threshold.
As an embodiment, the sentence wherein the target threshold and whether the first information is detected in the first pool of time-frequency resources are related comprises: the target threshold is a first threshold when the first node detects the first information in the first pool of time-frequency resources; the target threshold is a second threshold when the first node does not detect the first information in the first pool of time-frequency resources; the first threshold is not equal to the second threshold.
As one embodiment, the first threshold is lower than the second threshold.
As one embodiment, the first threshold is higher than the second threshold.
As an embodiment, the first threshold value and the second threshold value are each preconfigured.
As an embodiment, the first threshold and the second threshold are each configured by higher layer parameters.
As an embodiment, the first threshold and the second threshold are related to the first set of priorities, respectively.
Example 10
Embodiment 10 illustrates a schematic diagram of a target threshold and whether first information is detected in a first time-frequency resource pool according to an embodiment of the present application; as shown in fig. 10. In embodiment 10, the target threshold belongs to a first set of thresholds when the first information is detected in the first pool of time-frequency resources; the target threshold belongs to a second set of thresholds when the first information is not detected in the first pool of time-frequency resources; the first and second sets of thresholds each include a positive integer number of thresholds.
As an embodiment, the sentence wherein the target threshold and whether the first information is detected in the first pool of time-frequency resources are related comprises: the target threshold belongs to a first set of thresholds when the first node detects the first information in the first pool of time-frequency resources; the target threshold belongs to a second set of thresholds when the first node does not detect the first information in the first pool of time-frequency resources; the first and second sets of thresholds each include a positive integer number of thresholds.
As an embodiment, there is one threshold value of the first set of threshold values that does not belong to the second set of threshold values.
As an embodiment, there is one threshold value of the second set of threshold values that does not belong to the first set of threshold values.
As an embodiment, the first set of thresholds and the second set of thresholds are each pre-configured.
As an embodiment, the first and second sets of thresholds are each configured by higher layer parameters.
As an embodiment, the first set of priorities is used to determine the target threshold from the first set of thresholds when the first information is detected in the first pool of time-frequency resources; the first set of priorities is used to determine the target threshold from the second set of thresholds when the first information is not detected in the first pool of time-frequency resources.
Example 11
Embodiment 11 illustrates a schematic diagram of associating a first time-frequency resource group and a second time-frequency resource group according to an embodiment of the present application; as shown in fig. 11.
As an embodiment, the associating the first group of time-frequency resources and the second group of time-frequency resources in the sentence includes: the channel sensing performed within the first set of time-frequency resources is used to determine whether the second time-frequency resource block belongs to the first set of candidate resource blocks.
As an embodiment, the associating the first group of time-frequency resources and the second group of time-frequency resources in the sentence includes: and the first time-frequency resource group and the second time-frequency resource block are reserved by the same signaling.
As an embodiment, the associating the first group of time-frequency resources and the second group of time-frequency resources in the sentence includes: the first time-frequency resource group and the third time-frequency resource block in the application are reserved by the same signaling.
As an embodiment, the associating the first group of time-frequency resources and the second group of time-frequency resources in the sentence includes: the first signaling indicates the first time-frequency resource group and the second time-frequency resource group.
As a sub-embodiment of the foregoing embodiment, the first signaling explicitly indicates the second time-frequency resource block.
As a sub-embodiment of the foregoing embodiment, the first signaling implicitly indicates the second time-frequency resource block.
As an embodiment, the associating the first group of time-frequency resources and the second group of time-frequency resources in the sentence includes: the first signaling indicates the first group of time-frequency resources and the third group of time-frequency resources in this application.
As a sub-embodiment of the foregoing embodiment, the first signaling explicitly indicates the third time-frequency resource block.
As a sub-embodiment of the foregoing embodiment, the first signaling implicitly indicates the third time-frequency resource block.
As an embodiment, the associating the first group of time-frequency resources and the second group of time-frequency resources in the sentence includes: the first transport block in this application is transmitted within the first set of time-frequency resources.
As an embodiment, the associating the first group of time-frequency resources and the second group of time-frequency resources in the sentence includes: the first time-frequency resource group and the second time-frequency resource block both belong to the second time-frequency resource group in the application.
As an embodiment, the associating the first group of time-frequency resources and the second group of time-frequency resources in the sentence includes: the first time-frequency resource group belongs to the second time-frequency resource group in the application, and the second time-frequency resource group are non-orthogonal.
Example 12
Embodiment 12 illustrates a schematic diagram of a first set of time-frequency resources and whether first information is detected in a first pool of time-frequency resources according to an embodiment of the present application; as shown in fig. 12.
As an embodiment, when the first information is detected in the first time-frequency resource pool, the first time-frequency resource group does not belong to the second time-frequency resource group in this application; when the first information is not detected in the first time-frequency resource pool, the first time-frequency resource group belongs to the second time-frequency resource group.
As an embodiment, when the first information is detected in the first pool of time-frequency resources, the first group of time-frequency resources is reserved for K1 transport blocks, the first transport block in this application being one of the K1 transport blocks; when the first information is not detected in the first pool of time-frequency resources, the first group of time-frequency resources is reserved for K2 transport blocks, any transport block of the K1 transport blocks being different from any transport block of the K2 transport blocks; k1 and K2 are positive integers, respectively.
As a sub-embodiment of the foregoing embodiment, a Transport Block Size (Transport Block Size) of any Transport Block of the K1 Transport blocks is not equal to a Transport Block Size of any Transport Block of the K2 Transport blocks.
As an embodiment, when the first information is detected in the first pool of time-frequency resources, the first group of time-frequency resources is indicated by the first signaling in this application; the first set of time-frequency resources is indicated by another signaling different from the first signaling when the first information is not detected in the first pool of time-frequency resources.
As an embodiment, when the first information is detected in the first pool of time-frequency resources, the first set of time-frequency resources includes time-frequency resources occupied by the first transport block.
As an embodiment, when the first information is detected in the first pool of time-frequency resources, the first group of time-frequency resources is composed of time-frequency resources occupied by the first transport block.
As an embodiment, the first set of time-frequency resources is reserved by a given node when the first information is detected in the first pool of time-frequency resources; when the first information is not detected in the first pool of time-frequency resources, the first set of time-frequency resources is reserved by another node different from the given node.
Example 13
Embodiment 13 illustrates a schematic diagram of first signaling and first information according to an embodiment of the present application; as shown in fig. 13. In embodiment 13, the first node in this application detects the first signaling in the first time-frequency resource pool in this application, where the first signaling carries the first information.
As one embodiment, the phrase detecting the first information includes: the first signaling is detected.
As one embodiment, the phrase detecting the first information includes: detecting given signaling, wherein the given signaling carries the first information.
As an embodiment, the phrase detecting the first signaling means: and carrying out coherent reception in the first time-frequency resource pool, wherein the energy of a signal obtained after the coherent reception is greater than a first given threshold value.
As an embodiment, the phrase detecting the first signaling means: and receiving signals in the first time-frequency resource pool, performing decoding operation, and determining that the decoding is correct according to CRC bits.
As an embodiment, the first signaling is Unicast (Unicast) transmission.
As an embodiment, the first signaling is transmitted by multicast (Groupcast).
As an embodiment, the first signaling is user equipment-specific (UE-specific).
As an embodiment, the first signaling is dynamic signaling.
As one embodiment, the first signaling is layer 1(L1) signaling.
As an embodiment, the first signaling is layer 1(L1) control signaling.
For one embodiment, the first signaling includes SCI.
As an embodiment, the first signaling includes one or more fields in one SCI.
As an embodiment, the first signaling is transmitted on a SideLink (SideLink).
As an embodiment, the first signaling is transmitted through a PC5 interface.
As an embodiment, the sentence, the first signaling carrying the first information includes: the first signaling explicitly indicates the first information.
As an embodiment, the sentence, the first signaling carrying the first information includes: the first signaling implicitly indicates the first information.
As an embodiment, the first signaling indicates the third time-frequency resource block in this application.
As an embodiment, the first signaling explicitly indicates the third time-frequency resource block in this application.
As an embodiment, the first signaling implicitly indicates the third time-frequency resource block in this application.
As an embodiment, the time domain resource occupied by the third time-frequency resource block in the present application is related to the time domain resource occupied by the first signaling.
As an embodiment, the time domain resource occupied by the first signaling is used to determine the time domain resource occupied by the third time-frequency resource block in the present application.
As an embodiment, a time interval between the time domain resource occupied by the first signaling and the time domain resource occupied by the third time-frequency resource block in the present application is preconfigured.
As an embodiment, a time interval between the time domain resource occupied by the first signaling and the time domain resource occupied by the third time-frequency resource block in this application is configured by a higher layer signaling.
As an embodiment, the frequency domain resource occupied by the third time-frequency resource block in the present application is related to the frequency domain resource occupied by the first signaling.
As an embodiment, the frequency domain resource occupied by the first signaling is used to determine the frequency domain resource occupied by the third time-frequency resource block in this application.
As an embodiment, the first signaling indicates a first index, and the first index is used to determine the third time-frequency resource block in this application.
As a sub-embodiment of the above embodiment, the first index includes a HARQ process number (process number).
As a sub-embodiment of the above embodiment, the first index includes a layer 1(L1) destination identification (inactivation IDentity).
As a sub-embodiment of the above embodiment, the first index includes a layer 1(L1) Source identification (Source ID).
As a sub-embodiment of the above embodiment, the first index includes an identification of a target recipient of the first transport block.
As a sub-embodiment of the above embodiment, the first index comprises an identification of a sender of the first transport block.
As an embodiment, the first signaling includes configuration information of a first Data channel, the first transport block is transmitted on the first Data channel, and the configuration information of the first Data channel includes one or more of { occupied time domain resources, occupied frequency domain resources, MCS (Modulation and Coding Scheme ), DMRS (DeModulation Reference Signals) configuration information, HARQ process number (process number), RV (Redundancy Version), NDI (New Data Indicator ) }.
As a sub-embodiment of the above embodiment, the first data channel is a pscch.
As a sub-embodiment of the above-mentioned embodiment, the first data CHannel is a PUSCH (Physical Uplink Shared CHannel).
As one embodiment, the first signaling is transmitted on a PUCCH.
As an embodiment, the first signaling is transmitted on the PSCCH.
Example 14
Embodiment 14 illustrates a schematic diagram of a first signaling indication first time-frequency resource group according to an embodiment of the present application; as shown in fig. 14.
As one embodiment, the first signaling indicates the first set of time-frequency resources; the first transport block is transmitted within the first set of time-frequency resources.
As an embodiment, the first signaling explicitly indicates the first set of time-frequency resources.
As an embodiment, the first signaling implicitly indicates the first set of time-frequency resources.
As one embodiment, the first signaling indicates that the first set of time-frequency resources is reserved.
As an embodiment, the first set of time-frequency resources is reserved for K transport blocks, K being a positive integer; the first transport block is one of the K transport blocks.
As an embodiment, the time-frequency resources occupied by the first signaling belong to the first time-frequency resource group.
As an embodiment, the time-frequency resources occupied by the first signaling do not belong to the first time-frequency resource group.
Example 15
Embodiment 15 illustrates a schematic diagram of a first reference signal according to an embodiment of the present application; as shown in fig. 15. In embodiment 15, the first reference signal is transmitted within the first set of time frequency resources and measurements for the first reference signal are used to generate the first measurement value.
As one embodiment, the first Reference Signal includes SL (subcarrier) RS (Reference Signal).
For one embodiment, the first Reference signal includes a CSI-RS (Channel-State Information references Signals).
For one embodiment, the first reference signal includes a SL CSI-RS.
As one embodiment, the first Reference Signal includes an SRS (Sounding Reference Signal).
For one embodiment, the first reference signal includes a SL SRS.
As one embodiment, the first reference signal includes a DMRS.
As one embodiment, the first reference signal includes a SL DMRS.
As one embodiment, the first reference signal is transmitted on a SideLink (SideLink).
As an example, the first reference signal is transmitted through a PC5 interface.
As an embodiment, the first reference signal occupies only a part of REs in the first set of time-frequency resources.
For one embodiment, the first reference signal occupies all REs in the first set of time-frequency resources.
As one embodiment, the first reference signal includes a DMRS of a first control channel.
As a sub-embodiment of the above-mentioned embodiment, the first control channel carries the first signaling.
As a sub-embodiment of the above-mentioned embodiment, the first control channel carries the second information.
As a sub-embodiment of the above embodiment, the first control channel is a PSCCH.
As one embodiment, the first reference signal includes a DMRS of a second data channel.
As a sub-embodiment of the above-mentioned embodiments, the first signaling includes configuration information of the second data channel.
As a sub-embodiment of the above-mentioned embodiment, the second information includes configuration information of the second data channel.
As a sub-embodiment of the above embodiment, the first transport block is transmitted on the second data channel.
As a sub-embodiment of the above embodiment, the second data channel is transmitted on the first set of time-frequency resources.
As a sub-embodiment of the above embodiment, the second data channel is transmitted on the second group of time-frequency resources.
As a sub-embodiment of the above embodiment, the second data channel is a pscch.
As an embodiment, the first information is detected in the first pool of time-frequency resources, and the sender of the first reference signal is the sender of the first information.
As an embodiment, the first information is detected in the first pool of time-frequency resources, and the sender of the first reference signal is not the sender of the first information.
As one embodiment, the channel sensing includes: the first reference signal is received and an average received power of the first reference signal is measured.
As one embodiment, the channel sensing includes: and carrying out coherent reception on the first reference signal, and measuring the average received power of the signal obtained after the coherent reception.
As one embodiment, the first measurement value comprises an RSRP of the first reference signal.
As one embodiment, the first measurement value comprises an RSRQ of the first reference signal.
As one embodiment, the first measurement value comprises RSSI of the first reference signal.
Example 16
Embodiment 16 illustrates a schematic diagram of a first set of candidate resource blocks and M candidate resource blocks according to an embodiment of the present application; as shown in fig. 16. In embodiment 16, the first node selects the M candidate resource blocks in the first set of candidate resource blocks and transmits the first signal in the M candidate resource blocks. The first set of candidate resource blocks includes M0 candidate resource blocks, any one of the M candidate resource blocks being one of the M0 candidate resource blocks. In fig. 16, the indexes of the M0 candidate resource blocks are # 0., # M0-1, respectively.
As an example, said M is equal to 1.
As one embodiment, M is greater than 1.
As an example, the M0 is equal to 1.
As one example, the M0 is greater than 1.
As an embodiment, the first node self-selects the M candidate resource blocks in the first set of candidate resource blocks.
As an embodiment, the first node randomly selects the M candidate resource blocks in the first set of candidate resource blocks.
As an embodiment, the M0 candidate resource blocks correspond to M0 measurement quantities one-to-one, and the M candidate resource blocks are composed of M candidate resource blocks corresponding to the lowest measurement quantity in the first candidate resource block set.
For one embodiment, the first node randomly selects the M candidate resource blocks in a first subset of candidate resource blocks; the M0 candidate resource blocks correspond to M0 measurement quantities one to one, and the first candidate resource block subset consists of M1 candidate resource blocks corresponding to the lowest measurement quantity in the first candidate resource block set; m1 is a positive integer less than the M0 and not less than the M.
As an example, the M0 measurement quantities are RSSI respectively.
As an embodiment, the M0 measurement quantities are RSRP, respectively.
As an embodiment, the first signal is a wireless signal.
As an embodiment, the first signal is a baseband signal.
As an embodiment, the first signal carries one TB.
As an embodiment, the first signal carries CSI (Channel-State Information).
As one embodiment, the first signal is transmitted on a SideLink (SideLink).
As an example, the first signal is transmitted through a PC5 interface.
As one embodiment, the first signal is transmitted on a PUSCH.
As an embodiment, the first signal is transmitted on a psch.
Example 17
Embodiment 17 illustrates a schematic diagram of second information and a second group of time-frequency resources according to an embodiment of the present application; as shown in fig. 17. In embodiment 17, the second information indicates that the second group of time-frequency resources is reserved; the second time-frequency resource block and the second time-frequency resource block are non-orthogonal.
As one embodiment, the second information is dynamic information.
As one embodiment, the second information is information of layer 1 (L1).
As one embodiment, the second information is control information of layer 1 (L1).
As an embodiment, the second information is carried by physical layer signaling.
As one embodiment, the second information is carried by layer 1(L1) signaling.
As an embodiment, the second information is carried by layer 1(L1) control signaling.
For one embodiment, the second information includes SCI.
For one embodiment, the second information includes one or more fields (fields) in one SCI.
For one embodiment, the second information includes information carried by one or more fields in one SCI.
As an embodiment, the second information is transmitted on a SideLink (SideLink).
As an example, the second information is transmitted through the PC5 interface.
As an embodiment, the first signaling carries the second information.
As an embodiment, the second information is carried by a different signaling than the first signaling.
As an embodiment, the sender of the second information is different from the sender of the first information.
As an embodiment, the sender of the second information is the sender of the first information.
As an embodiment, the second information and the first information are respectively carried by different signaling, and the second information is earlier than the first information.
As an embodiment, the second information and the first information are respectively carried by different signaling, and the second information is later than the first information.
As an embodiment, the sentence group of second time-frequency resources is reserved including: a sender of the second information need not perform the channel sensing prior to sending wireless signals within the second group of time-frequency resources.
As an embodiment, the second group of time-frequency resources is reserved for K3 transport blocks, K3 being a positive integer; the first transport block is one of the K3 transport blocks.
As an embodiment, the second group of time-frequency resources is reserved for K3 transport blocks, K3 being a positive integer; the first transport block is not one of the K3 transport blocks.
As an embodiment, the second time-frequency resource block belongs to the second time-frequency resource group.
In one embodiment, the second group of time-frequency resources and the second group of time-frequency resources partially overlap.
In one embodiment, the second group of time-frequency resources overlaps with the second group of time-frequency resources.
As one embodiment, the second information is transmitted on a PUCCH.
As an embodiment, the second information is transmitted on the PSCCH.
As an embodiment, the first group of time-frequency resources belongs to the second group of time-frequency resources.
As an embodiment, the first information is not detected in the first pool of time-frequency resources, and the first group of time-frequency resources belongs to the second group of time-frequency resources.
As an embodiment, the second group of time-frequency resources occurs multiple times in the time domain, and the first group of time-frequency resources includes one occurrence of the second group of time-frequency resources in the time domain.
As an embodiment, the first group of time-frequency resources does not belong to the second group of time-frequency resources.
As an embodiment, the first information is detected in the first pool of time-frequency resources, the first group of time-frequency resources not belonging to the second group of time-frequency resources.
As an embodiment, the first information is detected in the first pool of time-frequency resources, the first group of time-frequency resources belonging to the second group of time-frequency resources.
Example 18
Embodiment 18 illustrates a schematic diagram of a third time-frequency resource group, a fourth time-frequency resource block, and a third time-frequency resource block according to an embodiment of the present application; as shown in fig. 18. In embodiment 18, the first node performs the channel sensing within the third group of time-frequency resources and obtains the second measurement value; the second measurement is used to determine whether the fourth time frequency resource block belongs to the first set of candidate resource blocks. The third time-frequency resource group belongs to the second time-frequency resource group, and the fourth time-frequency resource block and the second time-frequency resource group are non-orthogonal; and the third time frequency resource block and the fourth time frequency resource block are orthogonal in a time frequency domain.
As one embodiment, the second measurement value comprises RSRP.
As one embodiment, the second measurement value comprises RSRQ.
As one embodiment, the second measurement value includes RSSI.
As an example, the unit of the second measurement value is Watt (Watt).
As one example, the unit of the third threshold is watts.
As an example, the second measurement is in dBm (decibels).
As one embodiment, the unit of the third threshold is dBm.
As an embodiment, the third threshold is independent of whether the first information is detected in the first pool of time-frequency resources.
As an embodiment, the third group of time-frequency resources is the second group of time-frequency resources.
In one embodiment, the third group of time-frequency resources and the second group of time-frequency resources completely overlap.
In one embodiment, the third group of time-frequency resources and the second group of time-frequency resources partially overlap.
In one embodiment, the third group of time-frequency resources and the second group of time-frequency resources completely overlap in a frequency domain and partially overlap in a time domain.
As an embodiment, the fourth time-frequency resource block belongs to the second group of time-frequency resources.
For an embodiment, the fourth time-frequency resource block and the second time-frequency resource group overlap.
As an embodiment, the fourth time-frequency resource block and the second time-frequency resource group partially overlap.
As an embodiment, the fourth time-frequency resource block and the third time-frequency resource block belong to the same time slot in the time domain.
As an embodiment, the fourth time-frequency resource block and the third time-frequency resource block belong to the same subframe in the time domain.
As an embodiment, the fourth time-frequency resource block and the third time-frequency resource group are orthogonal in time domain.
In one embodiment, the fourth resource block is later in time domain than the third resource block.
In one embodiment, the fourth time-frequency resource block is earlier in the time domain than the third time-frequency resource block.
As an embodiment, the ending time of the fourth time-frequency resource block is not later than the starting time of the third time-frequency resource block.
As an embodiment, the frequency domain resources occupied by the fourth time frequency resource block and the third time frequency resource block are orthogonal.
As an embodiment, the frequency domain resources occupied by the fourth time frequency resource block and the third time frequency resource block overlap.
As an embodiment, the frequency domain resource occupied by the fourth time frequency resource block includes the frequency domain resource occupied by the third time frequency resource block.
In an embodiment, the fourth time-frequency resource block and the second time-frequency resource block are orthogonal in a time domain.
In one embodiment, the fourth time-frequency resource block is earlier in the time domain than the second time-frequency resource block.
As an embodiment, the fourth time-frequency resource block does not include a PSFCH.
As an embodiment, the first information is detected in the first pool of time-frequency resources; the target threshold is less than the third threshold.
As an embodiment, the first information is detected in the first pool of time-frequency resources, the fourth pool of time-frequency resources does not include a PSFCH; the target threshold is less than the third threshold.
As an embodiment, the target threshold is equal to the third threshold.
As an embodiment, when the first information is detected in the first pool of time-frequency resources, the second time-frequency resource block includes only the third time-frequency resource block of the third and fourth time-frequency resource blocks; when the first information is not detected in the first time-frequency resource pool, the second time-frequency resource block comprises the third time-frequency resource block and the fourth time-frequency resource block.
Example 19
Embodiment 19 illustrates a schematic diagram of a third time-frequency resource group, a fourth time-frequency resource block, and a third time-frequency resource block according to an embodiment of the present application; as shown in fig. 19.
As an embodiment, the third time-frequency resource block and the fourth time-frequency resource block are non-orthogonal in the time domain.
As an embodiment, the time domain resources occupied by the third time frequency resource block and the fourth time frequency resource block overlap.
In an embodiment, the fourth time-frequency resource block and the second time-frequency resource block are non-orthogonal in a time domain.
As an embodiment, the time domain resources occupied by the fourth time frequency resource block and the second time frequency resource block overlap.
Example 20
Embodiment 20 illustrates a schematic diagram of third information according to an embodiment of the present application; as shown in fig. 20. In embodiment 20, the third information is used to determine the first time-frequency resource pool.
As an embodiment, the third information is indicated by a higher layer (higher layer) parameter.
As an embodiment, the third information is carried by higher layer (higher layer) signaling.
As an embodiment, the third information is carried by RRC signaling.
As an embodiment, the third information is transmitted on a PDSCH (Physical Downlink Shared CHannel).
As an embodiment, the third information is transmitted on a PDCCH (Physical Downlink Control Channel).
As an embodiment, the third information is transmitted on the psch.
As an embodiment, the third information is transmitted on the PSCCH.
As an embodiment, the third information indicates the first time-frequency resource pool.
As an embodiment, the third information explicitly indicates the first time-frequency resource pool.
As an embodiment, the third information implicitly indicates the first time-frequency resource pool.
As an embodiment, the third information indicates a time domain resource occupied by the first time-frequency resource pool.
As an embodiment, the third information indicates frequency domain resources occupied by the first time-frequency resource pool.
Example 21
Embodiment 21 is a block diagram illustrating a configuration of a processing apparatus used in a first node device according to an embodiment of the present application; as shown in fig. 21. In fig. 21, a processing means 2100 in a first node device comprises a first receiver 2101 and a first processor 2102.
In embodiment 21, the first receiver 2101 monitors first information in a first time-frequency resource pool, performs channel sensing in the first time-frequency resource group, and obtains a first measurement value; the first processor 2102 determines that the second time-frequency resource block does not belong to the first candidate resource block set when the first measurement value is greater than a target threshold, and determines that the second time-frequency resource block belongs to the first candidate resource block set when the first measurement value is not greater than the target threshold.
In embodiment 21, the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information being used to indicate whether a first transport block is correctly received, the second time-frequency resource block comprising the third time-frequency resource block; the target threshold is related to whether the first information is detected in the first pool of time-frequency resources; the first group of time-frequency resources is associated with the second group of time-frequency resources.
As an embodiment, the first set of time-frequency resources is related to whether the first information is detected in the first pool of time-frequency resources.
For one embodiment, the first receiver 2101 detects first signaling in the first pool of time-frequency resources; wherein, the first receiver 2101 detects the first information in the first time-frequency resource pool, and the first signaling carries the first information.
As one embodiment, the first signaling indicates the first set of time-frequency resources; the first transport block is transmitted within the first set of time-frequency resources.
For one embodiment, a first reference signal is transmitted within the first set of time-frequency resources; measurements for the first reference signal are used to generate the first measurement value.
As an embodiment, the first processor 2102 selects M candidate resource blocks in the first set of candidate resource blocks and transmits a first signal in the M candidate resource blocks; wherein M is a positive integer; the first set of candidate resource blocks includes M0 candidate resource blocks, any one of the M candidate resource blocks being one of the M0 candidate resource blocks; m0 is a positive integer not less than M.
For one embodiment, the first receiver 2101 receives the second information; wherein the second information indicates that a second group of time-frequency resources is reserved; the second time-frequency resource block and the second time-frequency resource block are non-orthogonal.
As an embodiment, the first receiver 2101 performs the channel sensing within a third group of time-frequency resources and obtains a second measurement; the first processor 2102 determines that a fourth time frequency resource block does not belong to the first candidate resource block set when the second measurement value is greater than a third threshold, and determines that the fourth time frequency resource block belongs to the first candidate resource block set when the second measurement value is not greater than the third threshold; wherein the first receiver 2101 detects the first information in the first pool of time-frequency resources; the third time-frequency resource group belongs to the second time-frequency resource group, and the fourth time-frequency resource block and the second time-frequency resource group are non-orthogonal; and the third time frequency resource block and the fourth time frequency resource block are orthogonal in a time frequency domain.
For one embodiment, the first receiver 2101 receives the third information; wherein the third information is used to determine the first time-frequency resource pool.
As an embodiment, the first node device is a user equipment.
As an embodiment, the first node device is a relay node.
For one embodiment, the first receiver 2101 may comprise at least one of the embodiments { antenna 452, receiver 454, receive processor 456, multi-antenna receive processor 458, controller/processor 459, memory 460, data source 467} of embodiment 4.
For one embodiment, the first processor 2102 includes at least one of the { antenna 452, transmitter 454, transmit processor 468, multi-antenna transmit processor 457, controller/processor 459, memory 460, data source 467} of embodiment 4.
Example 22
Embodiment 22 illustrates a block diagram of a processing apparatus for use in a second node device according to an embodiment of the present application; as shown in fig. 22. In fig. 22, the processing means 2200 in the second node device includes a second processor 2201.
In embodiment 22, the second processor 2201 transmits the first information in the first time-frequency resource pool, or abandons the transmission of the first information in the first time-frequency resource pool.
In embodiment 22, the first information indicates that a third time frequency resource block is reserved for first control information, the first control information being used to indicate whether the first transport block is correctly received, the second time frequency resource block comprising the third time frequency resource block; channel sensing performed in a first group of time-frequency resources is used to determine a first measurement value; when the first measurement value is larger than a target threshold value, the second time-frequency resource block is judged not to belong to a first candidate resource block set; when the first measurement value is not larger than the target threshold value, the second time-frequency resource block is judged to belong to the first candidate resource block set; the target threshold is related to whether the first information is transmitted in the first time-frequency resource pool; the first group of time-frequency resources is associated with the second group of time-frequency resources.
As an embodiment, the first set of time-frequency resources relates to whether the first information is transmitted in the first pool of time-frequency resources.
For an embodiment, the second processor 2201 sends the first signaling in the first time-frequency resource pool; wherein the second processor 2201 sends the first information in the first time-frequency resource pool, and the first signaling carries the first information.
As one embodiment, the first signaling indicates the first set of time-frequency resources; the first transport block is transmitted within the first set of time-frequency resources.
For one embodiment, the second processor 2201 transmits the first reference signal in the first set of time-frequency resources; wherein measurements for the first reference signal are used to generate the first measurement value.
For one embodiment, the second processor 2201 sends the second information; wherein the second information indicates that a second group of time-frequency resources is reserved; the second time-frequency resource block and the second time-frequency resource block are non-orthogonal.
As an embodiment, the second node device is a user equipment.
As an embodiment, the second node device is a relay node.
For one embodiment, the second processor 2201 includes at least one of the { antenna 420, transmitter 418, transmit processor 416, multi-antenna transmit processor 471, controller/processor 475, memory 476} of embodiment 4.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. User equipment, terminal and UE in this application include but not limited to unmanned aerial vehicle, Communication module on the unmanned aerial vehicle, remote control plane, the aircraft, small aircraft, the cell-phone, the panel computer, the notebook, vehicle-mounted Communication equipment, wireless sensor, network card, thing networking terminal, the RFID terminal, NB-IOT terminal, Machine Type Communication (MTC) terminal, eMTC (enhanced MTC) terminal, the data card, network card, vehicle-mounted Communication equipment, low-cost cell-phone, wireless Communication equipment such as low-cost panel computer. The base station or the system device 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, a gNB (NR node B) NR node B, a TRP (Transmitter Receiver Point), 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 (30)

1. A first node device for wireless communication, comprising:
the first receiver monitors first information in a first time-frequency resource pool, executes channel perception in the first time-frequency resource pool and obtains a first measured value;
the first processor is used for judging that the second time-frequency resource block does not belong to the first candidate resource block set when the first measured value is larger than a target threshold value; when the first measurement value is not larger than the target threshold value, judging that the second time-frequency resource block belongs to the first candidate resource block set;
the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used for indicating whether a first transmission block is correctly received, and the time-frequency resources occupied by the first transmission block belong to the first time-frequency resource group; the second time frequency resource block comprises the third time frequency resource block; the target threshold is related to whether the first information is detected in the first pool of time-frequency resources; the first group of time-frequency resources is associated with the second group of time-frequency resources.
2. The first node device of claim 1, wherein the first set of time-frequency resources relates to whether the first information is detected in the first pool of time-frequency resources.
3. The first node device of claim 1 or 2, wherein the first receiver detects first signaling in the first pool of time-frequency resources; wherein the first receiver detects the first information in the first pool of time-frequency resources, and the first signaling carries the first information.
4. The first node device of claim 3, wherein the first signaling indicates the first set of time-frequency resources.
5. The first node device of claim 1 or 2, wherein a first reference signal is transmitted within the first set of time-frequency resources; measurements for the first reference signal are used to generate the first measurement value.
6. The first node device of claim 1 or 2, wherein the first processor selects M candidate resource blocks in the first set of candidate resource blocks and sends a first signal in the M candidate resource blocks; wherein M is a positive integer; the first set of candidate resource blocks includes M0 candidate resource blocks, any one of the M candidate resource blocks being one of the M0 candidate resource blocks; m0 is a positive integer not less than M.
7. The first node apparatus of claim 1 or 2, wherein the first receiver receives second information; wherein the second information indicates that a second group of time-frequency resources is reserved; the second time-frequency resource block and the second time-frequency resource block are non-orthogonal.
8. The first node device of claim 7, wherein the first receiver performs the channel sensing and obtains a second measurement within a third group of time-frequency resources; when the second measurement value is larger than a third threshold value, the first processor judges that a fourth time-frequency resource block does not belong to the first candidate resource block set; when the second measurement value is not greater than the third threshold value, judging that the fourth time-frequency resource block belongs to the first candidate resource block set; wherein the first information is detected in the first pool of time-frequency resources; the third time-frequency resource group belongs to the second time-frequency resource group, and the fourth time-frequency resource block and the second time-frequency resource group are non-orthogonal; and the third time frequency resource block and the fourth time frequency resource block are orthogonal in a time frequency domain.
9. The first node apparatus of claim 1 or 2, wherein the first receiver receives third information; wherein the third information is used to determine the first time-frequency resource pool.
10. A second node device for wireless communication, comprising:
the second processor sends first information in a first time-frequency resource pool, or abandons sending the first information in the first time-frequency resource pool;
wherein the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used to indicate whether a first transport block is correctly received, and a second time-frequency resource block includes the third time-frequency resource block; channel sensing performed in a first group of time-frequency resources is used to determine a first measurement value; the time-frequency resources occupied by the first transmission block belong to the first time-frequency resource group; when the first measurement value is larger than a target threshold value, the second time-frequency resource block is judged not to belong to a first candidate resource block set; when the first measurement value is not larger than the target threshold value, the second time-frequency resource block is judged to belong to the first candidate resource block set; the target threshold is related to whether the first information is transmitted in the first time-frequency resource pool; the first group of time-frequency resources is associated with the second group of time-frequency resources.
11. The second node device of claim 10, wherein the first set of time-frequency resources relates to whether the first information is sent in the first pool of time-frequency resources.
12. The second node device of claim 10 or 11, wherein the second processor sends first signaling in the first pool of time-frequency resources; the second processor sends the first information in the first time-frequency resource pool, and the first signaling carries the first information.
13. The second node device of claim 12, wherein the first signaling indicates the first set of time-frequency resources.
14. The second node apparatus of claim 10 or 11, wherein the second processor transmits a first reference signal within the first set of time-frequency resources; wherein measurements for the first reference signal are used to generate the first measurement value.
15. The second node apparatus of claim 10 or 11, wherein the second processor transmits second information; wherein the second information indicates that a second group of time-frequency resources is reserved; the second time-frequency resource block and the second time-frequency resource block are non-orthogonal.
16. A method in a first node used for wireless communication, comprising:
monitoring first information in a first time-frequency resource pool;
executing channel sensing in a first time-frequency resource group, and obtaining a first measured value;
when the first measurement value is larger than a target threshold value, judging that the second time-frequency resource block does not belong to the first candidate resource block set; when the first measurement value is not larger than the target threshold value, judging that the second time-frequency resource block belongs to the first candidate resource block set;
the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used for indicating whether a first transmission block is correctly received, and the time-frequency resources occupied by the first transmission block belong to the first time-frequency resource group; the second time frequency resource block comprises the third time frequency resource block; the target threshold is related to whether the first information is detected in the first pool of time-frequency resources; the first group of time-frequency resources is associated with the second group of time-frequency resources.
17. The method in a first node according to claim 16, wherein the first set of time-frequency resources relates to whether the first information is detected in the first pool of time-frequency resources.
18. A method in a first node according to claim 16 or 17, comprising:
detecting first signaling in the first pool of time-frequency resources;
wherein the first node detects the first information in the first time-frequency resource pool, and the first signaling carries the first information.
19. The method in a first node according to claim 18, wherein the first signaling indicates the first set of time-frequency resources.
20. The method in the first node according to claim 16 or 17, wherein a first reference signal is transmitted within the first set of time-frequency resources; measurements for the first reference signal are used to generate the first measurement value.
21. A method in a first node according to claim 16 or 17, comprising:
selecting M candidate resource blocks in the first set of candidate resource blocks, M being a positive integer;
transmitting a first signal in the M candidate resource blocks;
wherein the first set of candidate resource blocks includes M0 candidate resource blocks, any one of the M candidate resource blocks being one of the M0 candidate resource blocks; m0 is a positive integer not less than M.
22. A method in a first node according to claim 16 or 17, comprising:
receiving second information;
wherein the second information indicates that a second group of time-frequency resources is reserved; the second time-frequency resource block and the second time-frequency resource block are non-orthogonal.
23. A method in a first node according to claim 22, comprising:
executing the channel perception in a third time-frequency resource group, and obtaining a second measurement value;
when the second measurement value is larger than a third threshold value, judging that a fourth time frequency resource block does not belong to the first candidate resource block set; when the second measurement value is not greater than the third threshold value, judging that the fourth time-frequency resource block belongs to the first candidate resource block set;
wherein the first information is detected in the first pool of time-frequency resources; the third time-frequency resource group belongs to the second time-frequency resource group, and the fourth time-frequency resource block and the second time-frequency resource group are non-orthogonal; and the third time frequency resource block and the fourth time frequency resource block are orthogonal in a time frequency domain.
24. A method in a first node according to claim 16 or 17, comprising:
receiving third information;
wherein the third information is used to determine the first time-frequency resource pool.
25. A method in a second node used for wireless communication, comprising:
sending first information in a first time-frequency resource pool, or abandoning to send the first information in the first time-frequency resource pool;
wherein the first information indicates that a third time-frequency resource block is reserved for first control information, the first control information is used to indicate whether a first transport block is correctly received, and a second time-frequency resource block includes the third time-frequency resource block; channel sensing performed in a first group of time-frequency resources is used to determine a first measurement value; the time-frequency resources occupied by the first transmission block belong to the first time-frequency resource group; when the first measurement value is larger than a target threshold value, the second time-frequency resource block is judged not to belong to a first candidate resource block set; when the first measurement value is not larger than the target threshold value, the second time-frequency resource block is judged to belong to the first candidate resource block set; the target threshold is related to whether the first information is transmitted in the first time-frequency resource pool; the first group of time-frequency resources is associated with the second group of time-frequency resources.
26. The method in a second node according to claim 25, wherein the first set of time-frequency resources relates to whether the first information is transmitted in the first pool of time-frequency resources.
27. A method in a second node according to claim 25 or 26, comprising:
transmitting first signaling in the first time-frequency resource pool;
the second node sends the first information in the first time-frequency resource pool, and the first signaling carries the first information.
28. The method in the second node according to claim 27, wherein the first signaling indicates the first set of time-frequency resources.
29. A method in a second node according to claim 25 or 26, comprising:
transmitting a first reference signal within the first set of time-frequency resources;
wherein measurements for the first reference signal are used to generate the first measurement value.
30. A method in a second node according to claim 25 or 26, comprising:
sending the second information;
wherein the second information indicates that a second group of time-frequency resources is reserved; the second time-frequency resource block and the second time-frequency resource block are non-orthogonal.
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