CN115633415A - Method and device for wireless communication of sidelink - Google Patents

Method and device for wireless communication of sidelink Download PDF

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Publication number
CN115633415A
CN115633415A CN202110754969.8A CN202110754969A CN115633415A CN 115633415 A CN115633415 A CN 115633415A CN 202110754969 A CN202110754969 A CN 202110754969A CN 115633415 A CN115633415 A CN 115633415A
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China
Prior art keywords
time
signaling
frequency resource
timer
domain
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CN202110754969.8A
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Chinese (zh)
Inventor
张锦芳
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 CN202110754969.8A priority Critical patent/CN115633415A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The application discloses a method and a device for sidelink wireless communication. The first node monitors target signaling in the active time; receiving a first signaling, wherein the first signaling comprises a first domain, and the first signaling indicates a target time frequency resource block; maintaining a first timer in accordance with the first domain of at least the first signaling; wherein the state of the first timer is maintained when the value of the first domain of the first signaling is one of a first set of candidate values; initializing or keeping unchanged a state of the first timer when the value of the first domain of the first signaling is one of a second set of candidate values; the active time includes a time when the first timer is in a running state. The power saving effect can be effectively improved.

Description

Method and device for wireless communication of secondary link
Technical Field
The present application relates to methods and apparatus in a wireless communication system, and more particularly, to methods and apparatus for timer maintenance when DRX is supported in sidelink wireless communication.
Background
DRX (Discontinuous Reception) is a common method in cellular communication, and can reduce power consumption of a communication terminal and increase standby time. A base station controls a timer related to DRX through DCI (Downlink Control Information) or MAC (Medium Access Control) CE (Control Element), so as to Control User Equipment (UE) to be in an active time or an inactive time in a given time slot or subframe, and further Control wireless reception of the UE, including receiving a wireless signal when the UE is in the active time; and when the UE is in the inactive time, stopping monitoring the wireless signals.
In the future, the application scenes of the wireless communication system are more and more diversified, and different application scenes put different performance requirements on the system. In order to meet different performance requirements of various application scenarios, research on NR (New Radio over the air) technology (or Fifth Generation, 5G) is decided over 72 sessions of 3GPP (3 rd Generation Partner Project) RAN (Radio Access Network), and standardization of NR is started over 3GPP RAN #75 sessions of WI (Work Item) that passed NR. For the rapidly developing V2X (Vehicle-to-electrical networking) service, 3GPP has also started to initiate SL (Sidelink) standard formulation and research work under the NR framework. In the internet of vehicles service, besides vehicle-mounted terminals, roadside pedestrian handheld terminals are also provided, the handheld terminals are limited in power and sensitive to power consumption, and therefore standardization work for starting WI of NR V2XDRX is determined in a 3GPP RAN # 86-time meeting.
Disclosure of Invention
The inventor finds through research that DRX in sidelink transmission supports an inactivity timer; the receiving UE determines whether to start or restart the inactivity timer by monitoring whether physical layer signaling indicates a new transmission. If a new transmission is received, there is a high probability that new data will continue to be received, so the main role of the inactivity timer is to let the UE stay active for the time after receiving the new data, and continue to monitor sidelink transmissions to avoid missing the next new data transmission. For some services, if the data transmission regularity is regular or can be predicted in advance, for example, the data packet generation is periodic and the data packet size is fixed, a resource allocation mode configured with authorization may be used at this time, and the transmitting UE may predict that there will be no new data packet transmission requirement for a certain period of time after some data packets are transmitted. If the sending UE does not indicate that the time-frequency resource used by the receiving UE for this transmission is indicated by the configuration authorization, the receiving UE will start or restart the inactivity timer after detecting a new transmission through the physical layer signaling, and cannot effectively play a role in saving power consumption.
In view of the above problems, the present application discloses a solution for timer maintenance based on configuration grant when the secondary link supports DRX. When the sending UE sends a new transmission by using the resource authorized by the configuration, the receiving UE can be indicated to keep the state of the inactive counter unchanged, thereby effectively improving the power-saving effect. In the description of the present application, the NR V2X scene is merely taken as a typical application scene or example; the application is also applicable to other scenarios (such as relay networks, D2D (Device-to-Device) networks, cellular networks, scenarios supporting half-duplex user equipment) besides NR V2X, which face similar problems, and can also achieve technical effects similar to those in NR V2X scenarios. Furthermore, the adoption of a unified solution for different scenarios (including but not limited to NR V2X scenarios, downstream communication scenarios, etc.) also helps to reduce hardware complexity and cost. Without conflict, embodiments and features in embodiments in a first node of the present application may be applied to any other node and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict. In particular, the terms (telematics), nouns, functions, variables in the present application may be explained (if not specifically stated) with reference to the definitions in the 3GPP specification protocols TS36 series, TS38 series, TS37 series.
The application discloses a method in a first node used for wireless communication, characterized by comprising:
monitoring target signaling at an active time;
receiving a first signaling, wherein the first signaling comprises a first domain, and the first signaling indicates a target time-frequency resource block;
maintaining a first timer in accordance with the first domain of at least the first signaling;
wherein the state of the first timer is kept unchanged when the value of the first domain of the first signaling is one of a first set of candidate values; initializing or keeping unchanged a state of the first timer when the value of the first domain of the first signaling is one of a second set of candidate values; the active time includes a time when the first timer is in a running state.
As an embodiment, the present application is directed to a scenario in which the sidelink supports DRX.
As an embodiment, the application is applicable to timer maintenance when using a resource allocation pattern for configuration grant.
As an embodiment, the problem to be solved by the present application is: the data generation of some services is regular, and at this time, the sending node can predict the service characteristics and send the service characteristics on the pre-configured time frequency resources by using a resource allocation mode of configuration authorization. For such services, if the operation of the inactivity timer is controlled by the conventional method, the power saving effect is affected.
As an example, the solution of the present application comprises: for the time-frequency resource indicated by the configuration grant, the state of the inactivity counter is kept unchanged by indicating in the signaling to the receiving UE.
As an embodiment, the beneficial effects of the present application include: the new transmission received on the pre-configured time frequency resource block is not used for starting or restarting the inactivity timer, so that the running time of the inactivity timer can be effectively shortened, and the power saving effect is achieved.
As one embodiment, the first timer is an inactivity timer.
As an embodiment, the first node is configured with DRX; the first node monitors the target signaling during the active time, and the first node abandons monitoring the target signaling during the inactive time.
As one embodiment, the phrase abandoning monitoring the target signaling comprises: the first node is in a dormant state.
According to one aspect of the application, comprising:
maintaining the first timer based on whether the first wireless signal is a new transmission;
wherein the first wireless signal is scheduled by the first signaling.
According to one aspect of the application, comprising:
receiving a first set of messages by a sender of the first signaling before sending the first signaling, the first set of messages indicating a first time-frequency resource pool, the first time-frequency resource pool including at least one time-frequency resource block; when the target time-frequency resource block belongs to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the first candidate value set; when the target time-frequency resource block does not belong to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the second candidate value sets.
According to one aspect of the application, comprising:
the first set of messages is used to indicate configuration authorization.
According to one aspect of the application, comprising:
a second message is received by the sender of the first signaling after sending the first signaling, the second message being used to determine time domain resources of a last time-frequency resource block included in the first pool of time-frequency resources.
According to one aspect of the application, comprising:
the first node is configured for discontinuous reception.
According to one aspect of the application, comprising:
maintaining the first timer in accordance with the first domain of at least the first signaling only when the first signaling indicates at least one non-broadcast transmission.
The application discloses a method in a second node used for wireless communication, characterized by comprising:
sending a first signaling, wherein the first signaling comprises a first domain, and the first signaling indicates a target time frequency resource block;
wherein target signaling is monitored by a recipient of the first signaling during an active time; a first timer is maintained by the recipient of the first signaling according to at least the first domain of the first signaling; the state of the first timer remains unchanged when the value of the first domain of the first signaling is one of a first set of candidate values; when the value of the first domain of the first signaling is one of a second set of candidate values, the first timer is initialized or a state of the first timer remains unchanged; the active time includes a time when the first timer is in a running state.
According to one aspect of the application, comprising:
the first timer is maintained according to whether the first wireless signal is a new transmission;
wherein the first wireless signal is scheduled by the first signaling.
According to one aspect of the application, comprising:
receiving a first set of messages, the first set of messages indicating a first time-frequency resource pool, the first time-frequency resource pool including at least one time-frequency resource block;
wherein the value of the first domain of the first signaling is one of the first set of candidate values when the target time-frequency resource block belongs to the first time-frequency resource pool; when the target time-frequency resource block does not belong to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the second candidate value sets; the receiving time of the first set of messages is earlier than the sending time of the first signaling.
According to one aspect of the application, comprising:
the first set of messages is used to indicate configuration authorization.
According to one aspect of the application, comprising:
receiving a second message used for determining a time domain resource of a last time-frequency resource block included in the first time-frequency resource pool;
wherein a reception time of the second message is later than the transmission time of the first signaling.
According to one aspect of the application, comprising:
a receiver of the first signaling is configured for discontinuous reception.
According to one aspect of the application, comprising:
the first timer is maintained in accordance with the first domain of at least the first signaling only when the first signaling indicates at least one non-broadcast transmission.
The present application discloses a first node for wireless communication, comprising:
a first receiver monitoring a target signaling at an active time; receiving a first signaling, wherein the first signaling comprises a first domain, and the first signaling indicates a target time-frequency resource block; maintaining a first timer in accordance with the first domain of at least the first signaling;
wherein the state of the first timer is maintained when the value of the first domain of the first signaling is one of a first set of candidate values; initializing or keeping unchanged a state of the first timer when the value of the first domain of the first signaling is one of a second set of candidate values; the active time includes a time when the first timer is in a running state.
The application discloses a second node used for wireless communication, characterized by comprising:
the second transmitter is used for transmitting a first signaling, the first signaling comprises a first domain, and the first signaling indicates a target time frequency resource block;
wherein target signaling is monitored by a recipient of the first signaling at an active time; a first timer is maintained by the recipient of the first signaling according to at least the first domain of the first signaling; the state of the first timer remains unchanged when the value of the first domain of the first signaling is one of a first set of candidate values; when the value of the first domain of the first signaling is one of a second set of candidate values, the first timer is initialized or a state of the first timer remains unchanged; the active time includes a time when the first timer is in a running state.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 illustrates a transmission flow diagram of a first node according to an embodiment of the application;
FIG. 2 illustrates a schematic diagram of a network architecture according to one embodiment of the present application;
fig. 3 illustrates a schematic diagram of radio protocol architecture of a user plane and a control plane according to an embodiment of the present application;
FIG. 4 illustrates a hardware module diagram of a communication device according to one embodiment of the present application;
FIG. 5 illustrates a wireless signal transmission flow diagram according to one embodiment of the present application;
FIG. 6 illustrates a diagram of a target time-frequency resource block according to an embodiment of the present application;
FIG. 7 illustrates a first time-frequency resource pool diagram according to an embodiment of the present application;
fig. 8 illustrates a relationship diagram of a first reference SFN, a first time offset, a first DCI, a second time offset, and a first time-frequency resource pool according to an embodiment of the application;
FIG. 9 illustrates a schematic diagram of time slots and logical time slots according to one embodiment of the present application;
FIG. 10 illustrates a schematic diagram of timer operation according to one embodiment of the present application;
FIG. 11 illustrates a block diagram of a processing device in a first node according to one embodiment of the present application;
fig. 12 illustrates a block diagram of a processing 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 transmission flow diagram of a first node according to an embodiment of the present application, as shown in fig. 1.
In embodiment 1, the first node 100 monitors the target signaling for an active time in step 101; receiving a first signaling in step 102, the first signaling comprising a first field, the first signaling indicating a target time-frequency resource block; maintaining a first timer according to the first domain of at least the first signaling in step 103; wherein the state of the first timer is kept unchanged when the value of the first domain of the first signaling is one of a first set of candidate values; initializing or keeping unchanged a state of the first timer when the value of the first domain of the first signaling is one of a second set of candidate values; the active time includes a time when the first timer is in a running state. It should be noted that step 101 and other steps in embodiment 1 have no fixed time sequence relationship, and step 101 may occur before step 102, step 101 may occur between step 102 and step 103, and step 101 may also occur after step 103.
As an embodiment, target signaling is monitored during the active time.
As an embodiment, the sender of the target signaling comprises a second node in the present application.
As an embodiment, the sender of the target signaling comprises a third node in the present application.
As an embodiment, the target signaling includes SCI (Sidelink Control Information).
As an embodiment, the target signaling comprises a first phase (1) st Stage) SCI or second stage (2) nd Stage) at least the former of the SCIs.
As one embodiment, the target signaling includes SCI format 1-A (Format 1-A).
As an embodiment, the target signaling includes one of SCI format 2-A or SCI format 2-B.
As an embodiment, the target signaling includes DCI (Downlink Control Information).
As one embodiment, the behavior monitoring includes a search.
As one embodiment, the behavior monitoring includes monitoring (monitor).
As one embodiment, the behavior monitoring includes waveform detection.
As one embodiment, the behavioral monitoring includes maximum likelihood detection.
As one embodiment, the behavior monitoring includes blind decoding.
As one embodiment, the behavioral monitoring includes energy detection.
As an embodiment, the behavior monitoring comprises coherent detection of a signature sequence.
As an embodiment, the behavior monitoring includes CRC (Cyclic Redundancy Check) verification, if the target signaling is deemed to be correctly detected by the CRC verification, and if the target signaling is not deemed to be incorrectly detected by the current decoding by the CRC verification.
As an embodiment, the first node abstains from monitoring the target signaling during an inactive time.
As an embodiment, the first node abstains from monitoring the target signaling at times other than the active time.
As an embodiment, the time-frequency resource block occupied by the target signaling is reserved for sidelink transmission.
As an embodiment, the active time comprises a time when the first node is not configured with DRX.
As an embodiment, the active time comprises a time when the first timer is in a running state.
As an embodiment, the name of the first timer includes an inactivity timer.
For one embodiment, the first timer is an sl-DRX-inactivity timer.
As an embodiment, the active time comprises a time when the second timer is in a running state.
As one embodiment, the second timer is a duration timer.
As an embodiment, the second timer is a retransmission timer.
As an embodiment, the name of the second timer includes an onDurationTimer.
As an embodiment, the name of the second timer comprises a retransmission timer.
As an embodiment, the name of the second timer comprises cgretransmission timer (configuration grant retransmission timer).
As an embodiment, the second timer is an sl-DRX-onDurationTimer (sidelink-discontinuous reception-duration timer).
For one embodiment, the second timer is sl-DRX-retransmission timer (sidelink-discontinuous reception-retransmission timer).
For one embodiment, the second timer is sl-DRX-cgretransmission timer (sidelink-DRX-configured grant retransmission timer).
For one embodiment, the first timer is maintained at a MAC sublayer of the first node.
For one embodiment, the second timer is maintained at a MAC sublayer of the first node.
As one embodiment, the inactive time includes a time when both the first timer and the second timer are in a stopped state.
For one embodiment, the first node receives first signaling.
As an embodiment, the first signaling sender is the second node in this application.
As an embodiment, the time domain resource occupied by the first signaling belongs to the active time.
As an embodiment, the first signaling is transmitted through a PC5 interface.
As an embodiment, the first signaling is transmitted through SL (Sidelink).
As an embodiment, the first signaling is physical layer signaling.
As an embodiment, the first signaling is a SCI.
As an embodiment, the first signaling comprises a first phase (1) st -stage) SCI or at least the former of the second stage (2 nd-stage) SCI.
As an embodiment, the first signaling includes SCI format 1-A (format 1-A).
As an embodiment, the first signaling includes one of SCI format 2-A or SCI format 2-B.
As an embodiment, the first signaling comprises the first phase (1) st Stage) SCI is carried on a first PSCCH (Physical Sidelink Control CHannel) CHannel.
As an embodiment, the second phase (2) comprised by the first signaling nd Stage) SCI is carried on a first PSSCH (Physical Sidelink Shared CHannel) CHannel.
As one embodiment, the first signaling includes a first domain (field).
As an embodiment, the first domain comprised by the first signaling is in the first-stage SCI comprised by the first signaling.
As an embodiment, the first domain included in the first signaling is in the second-stage SCI included in the first signaling.
In one embodiment, the first signaling includes the first field indicating whether the target time-frequency resource block is a configuration grant.
As an embodiment, the first signaling includes a name of the first domain including a CG (Configured Grant) indicator.
As an embodiment, the first signaling indicates a target time-frequency resource block.
As an embodiment, the phrase said first signaling indicates that a target time-frequency resource block comprises: the first stage SCI comprised by the first signaling indicates the target time-frequency resource block.
As an embodiment, the phrase said first signaling indicates that a target time-frequency resource block comprises: and the time frequency resource occupied by the first signaling is the target time frequency resource block.
As an embodiment, the phrase said first signaling indication target time-frequency resource block comprises: the time frequency resource of the first PSCCH and the first stage SCI included in the first signaling carried by the first PSCCH jointly indicate the target time frequency resource block.
As an example, the first PSCCH occupies a fixed symbol in one secondary link time slot.
As an embodiment, a starting PRB (PRB) of the first PSCCH is a first PRB of one subchannel.
As an embodiment, the starting sub-channel of the first PSCCH is a sub-channel on which a starting PRB of a frequency domain resource of the first PSCCH is located.
As an embodiment, the phrase said first signaling indication target time-frequency resource block comprises: the time slot of the first PSCCH is the time slot of the target time frequency resource block; the starting sub-channel of the first PSCCH is the starting sub-channel of the target time frequency resource block; the first stage SCI included in the first signaling explicitly indicates the number of subchannels included in the target time-frequency resource block.
As an embodiment, the phrase said first signaling indication target time-frequency resource block comprises: the time slot of the first PSCCH is the initial time slot of the target time frequency resource block; the starting sub-channel of the first PSCCH is the starting sub-channel of the target time frequency resource block; the first-stage SCI included in the first signaling explicitly indicates the number of sub-channels included in the target time-frequency resource block; the first stage SCI included in the first signaling explicitly indicates the number of slots included in the target time-frequency resource block.
As an embodiment, the target time-frequency resource block is a time-frequency resource occupied by the first-stage SCI included in the first signaling and a wireless signal scheduled by the first-stage SCI included in the first signaling.
As an embodiment, the target time frequency resource block is a time frequency resource occupied by the first PSCCH and the first PSCCH.
In one embodiment, the time-frequency resource block includes time-domain resources and frequency-domain resources.
As an embodiment, the time domain resource of the time frequency resource block comprises at least one symbol (symbol).
As an embodiment, the time domain resource of the time-frequency resource block comprises one slot (slot).
In one embodiment, the time domain resource of the time frequency resource block includes at least one slot (slot).
As an embodiment, the one slot includes at least four symbols.
As an embodiment, the one slot includes 12 symbols.
As an embodiment, the one slot includes 14 symbols.
As one embodiment, the symbol is a multicarrier symbol.
As one embodiment, the symbol is a single-carrier symbol.
As an embodiment, the frequency domain resource of the time-frequency resource block comprises at least one subcarrier (subcarrier).
In one embodiment, the frequency-domain resources of the time-frequency resource block include at least one PRB.
As an embodiment, the frequency domain resource of the time-frequency resource block includes at least one subchannel (subchannel).
As an embodiment, one subchannel includes at least one PRB.
As an embodiment, the one physical resource block includes 12 subcarriers.
As an embodiment, a first timer is maintained in accordance with the first domain of at least the first signaling.
As an embodiment, the first timer is maintained according to the first domain of the first signaling.
As an embodiment, the values of the first domain of the first signaling belong to one of a first set of candidate values or a second set of candidate values.
As an embodiment, when the value of the first domain of the first signaling is one of the first set of candidate values, the state of the first timer is kept unchanged.
As one embodiment, the first timer is initialized when the value of the first domain of the first signaling is one of the second set of candidate values.
As an embodiment, the state of the first timer is kept unchanged when the value of the first domain of the first signaling is one of the second set of candidate values.
As an embodiment, when said value of said first domain of said first signaling is one of said second set of candidate values, equiprobable random execution initializes said first timer or leaves said state of said first timer unchanged.
As one embodiment, the first field of the first signaling includes at least 1 bit.
As one embodiment, the first field of the first signaling includes 1 bit.
As an embodiment, the first set of candidate values and the second set of candidate values comprise 1 value each.
As one embodiment, the first set of candidate values includes 1; the second set of candidate values includes 0.
As one embodiment, the first field of the first signaling includes 2 bits.
As an embodiment, the value of the first field of the first signaling is one of 00, 01, 10 or 11.
As an embodiment, the first set of candidate values and the second set of candidate values comprise 2 values, respectively.
As one embodiment, the first set of candidate values includes 01 and 10; the second set of candidate values includes 00 and 11.
As one embodiment, the state of the first timer is a stop state.
As one embodiment, the state of the first timer is a running state.
As one embodiment, the phrase keeping the state of the first timer unchanged includes: when the first timer is in the running state, the first timer continues to run.
As one embodiment, the phrase keeping the state of the first timer unchanged includes: when the first timer is in the stopped state, the first timer remains in the stopped state.
As one embodiment, the phrase keeping the state of the first timer unchanged includes: the physical layer of the first node abstains from sending the first indication to the MAC sublayer of the first node.
As one embodiment, the phrase initializing the first timer includes: the physical layer of the first node sends the first indication to the MAC sublayer of the first node.
As one embodiment, the first indication is used to initialize the first timer.
As one embodiment, the phrase initializing the first timer comprises: the first timer is started.
As one embodiment, the phrase initializing the first timer includes: restarting the first timer.
As one embodiment, the phrase initializing the first timer comprises: starting the first timer when the first timer is in the stopped state.
As one embodiment, the phrase initializing the first timer comprises: restarting the first timer when the first timer is in the run state.
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 V2X communication architecture under NR 5g, LTE (Long-Term Evolution, long Term Evolution) and LTE-a (Long-Term Evolution Advanced, enhanced Long Term Evolution) system architectures. The NR 5G or LTE-a network architecture may be referred to as 5GS (5G System)/EPS (Evolved Packet System), or some other suitable terminology.
The V2X communication architecture of embodiment 2 includes UE (User Equipment) 201, UE241, ng-RAN (next generation radio access network) 202,5gc (5G Core network )/EPC (Evolved Packet Core) 210, hss (Home Subscriber Server )/UDM (Unified Data Management, unified Data Management) 220, proSe function 250, and ProSe application Server 230. The V2X communication architecture may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the V2X communication architecture provides packet switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit switched services or other cellular networks. The NG-RAN includes NR node bs (gnbs) 203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a wireless base station, a wireless transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (transmit receive node), or some other suitable terminology, and in an NTN network, the gNB203 may be a satellite, an aircraft, or a terrestrial base station relayed through a satellite. The gNB203 provides the UE201 with an access point to the 5GC/EPC210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a gaming console, a drone, an aircraft, a narrowband internet of things device, a machine type communication device, a terrestrial vehicle, an automobile, a vehicle-mounted device, a vehicle-mounted communication unit, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the 5GC/EPC210 via an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity)/AMF (Authentication Management domain)/SMF (Session Management Function) 211, other MME/AMF/SMF214, S-GW (serving Gateway)/UPF (User Plane Function) 212, and P-GW (Packet data Network Gateway)/UPF 213. The MME/AMF/SMF211 is a control node that handles signaling between the UE201 and the 5GC/EPC210. In general, the MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW/UPF212, and the S-GW/UPF212 itself is connected to the P-GW/UPF213. The P-GW provides UE IP address allocation as well as other functions. The P-GW/UPF213 is connected to internet services. The internet service includes an operator-corresponding internet protocol service, and may specifically include internet, intranet, IMS (IP Multimedia Subsystem), and PS (Packet Switching) streaming services. The ProSe function 250 is a logical function for network-related behavior required by Proximity-based Service (ProSe); including a DPF (Direct Provisioning Function), a Direct Discovery Name Management Function (Direct Discovery Name Management Function), an EPC-level Discovery ProSe Function (EPC-level Discovery ProSe Function), and the like. The ProSe application server 230 has the functions of storing EPC ProSe subscriber identities, mapping between application layer subscriber identities and EPC ProSe subscriber identities, and the like.
As an embodiment, the UE241 corresponds to a first node in this application.
As an embodiment, the UE201 corresponds to a second node in the present application.
As an embodiment, the gNB203 corresponds to a third node in the present application.
As an embodiment, the UE201 and the UE241 support transmission in SL, respectively.
As an embodiment, the UE201 and the UE241 support a PC5 interface, respectively.
As an embodiment, the UE201 and the UE241 support car networking respectively.
As an embodiment, the UE201 and the UE241 support V2X services, respectively.
As an embodiment, the UE201 and the UE241 support D2D services, respectively.
As an embodiment, the UE201 and the UE241 support public safety (public safety) services respectively.
As one example, the gNB203 supports internet of vehicles.
As an embodiment, the gNB203 supports V2X traffic.
As an embodiment, the gNB203 supports D2D services.
As an embodiment, the gNB203 supports public safety service.
As an example, the gNB203 is a macro Cell (Marco Cell) base station.
As an embodiment, the gNB203 is a Micro Cell (Micro Cell) base station.
As an embodiment, the gNB203 is a Pico Cell (Pico Cell) base station.
As an embodiment, the gNB203 is a home base station (Femtocell).
As an embodiment, the gNB203 is a base station device supporting a large delay difference.
As an example, the gNB203 is a flight platform device.
As an embodiment, the gNB203 is a satellite device.
As an embodiment, the radio link from the UE201 to the gNB203 is an uplink.
As an embodiment, the radio link from the gNB203 to the UE201 is downlink.
As an embodiment, the wireless link between the UE201 and the UE241 corresponds to a sidelink in this application.
As an embodiment, the UE201 and the gNB203 are connected through a Uu interface.
As an embodiment, the UE201 and the UE241 are connected through a PC5 Reference Point (Reference Point).
As an embodiment, the ProSe function 250 is connected with the UE201 and the UE241 through PC3 reference points, respectively.
As an embodiment, the ProSe function 250 is connected with the ProSe application server 230 through a PC2 reference point.
As an embodiment, the ProSe application server 230 connects to the ProSe application of the UE201 and the ProSe application of the UE241 through PC1 reference points, respectively.
Example 3
Embodiment 3 illustrates a schematic diagram of radio protocol architecture of a user plane and a control plane according to an embodiment of the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture of the control plane 300 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 PHY301. Layer 2 (L2 layer) 305 is above PHY301, and is responsible for the link between the UE and the gNB through PHY301. 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 gbb on the network side. The PDCP sublayer 304 provides data ciphering and integrity protection, and the PDCP sublayer 304 also provides handover support for UEs between gnbs. The RLC sublayer 303 provides segmentation and reassembly of packets, retransmission of missing packets by ARQ, and the RLC sublayer 303 also provides duplicate packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channel identities. 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 (Hybrid Automatic Repeat Request) operations. The RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer) in the Control plane 300 is responsible for obtaining Radio resources (i.e., radio bearers) and configuring the lower layers using RRC messages between the gNB and the UE. Although not shown, the UE may further have a V2X layer above the RRC sublayer 306 in the control plane 300, where the V2X layer is responsible for generating a PC5QoS parameter set and a QoS rule according to received service data or a service request, generating a PC5QoS stream corresponding to the PC5QoS parameter set and sending the PC5QoS stream identifier and the corresponding PC5QoS parameter set to an AS (Access Stratum) layer for QoS processing of a packet belonging to the PC5QoS stream identifier by the AS layer; the V2X layer also comprises a PC5-S Signaling Protocol (PC 5-Signaling Protocol) sub-layer, and the V2X layer is responsible for indicating whether each transmission of the AS layer is PC5-S transmission or V2X service data transmission. The radio protocol architecture of the user plane 350, which includes layer 1 (L1 layer) and layer 2 (L2 layer), is substantially the same in the user plane 350 with respect to the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes an SDAP (Service Data Adaptation Protocol) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS (Quality of Service) streams and Data Radio Bearers (DRBs) to support diversity of services. The radio protocol architecture of the UE in the user plane 350 may include a part of or all of the SDAP sublayer 356, the PDCP sublayer 354, the RLC sublayer 353, and the MAC sublayer 352 at the L2 layer. Although not shown, the UE may also have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.).
As an example, the wireless protocol architecture in fig. 3 is applicable to the first node in the present application.
As an example, the wireless protocol architecture in fig. 3 is applicable to the second node in the present application.
As an example, the wireless protocol architecture in fig. 3 is applicable to the third node in the present application.
As an embodiment, the target signaling in the present application is generated in the PHY301 or the PHY351.
As an embodiment, the first signaling in this application is generated in the PHY301 or the PHY351.
As an embodiment, the first wireless signal in the present application is generated in the PHY301 or the PHY351.
As an embodiment, the first RRC message included in the first message set in this application is generated in the RRC306.
As an embodiment, the second RRC message included in the first message set in this application is generated in the RRC306.
As an embodiment, the first DCI included in the first message set in the present application is generated in the PHY301 or the PHY351.
As an embodiment, the second message in this application is generated in the RRC306.
As an embodiment, the second message in this application is generated in the MAC302 or the MAC352.
As an example, the first timer in this application is maintained at the MAC302 or the MAC352.
As an example, the second timer in this application is maintained at the MAC302 or the MAC352.
As an example, the L2 layer 305 belongs to a higher layer.
As an embodiment, the RRC sublayer 306 in the L3 layer belongs to a higher layer.
As an example, the V2X layer belongs to an upper layer.
As an example, PC5-S in the V2X layer belongs to the upper layer.
Example 4
Embodiment 4 illustrates a hardware module schematic diagram of a communication device according to an embodiment of the application, as shown in fig. 4. Fig. 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.
The first communications device 450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multiple antenna transmit processor 457, a multiple antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.
The second communication device 410 includes a controller/processor 475, a memory 476, a data source 477, a receive processor 470, a transmit processor 416, a multiple antenna receive processor 472, a multiple antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.
In transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, an upper layer data packet from the core network or an upper layer data packet from a data source 477 is provided to the controller/processor 475. The core network and data source 477 represents all protocol layers above the L2 layer. The controller/processor 475 implements the functionality of the L2 layer. In transmissions from the second communications device 410 to the first communications device 450, the controller/processor 475 provides for header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communications device 450 based on various priority metrics. The controller/processor 475 is also responsible for retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 410, as well as mapping of signal constellation based on various modulation schemes (e.g., binary Phase Shift Keying (BPSK), quadrature Phase Shift Keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate the physical channels carrying the time-domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream that is then provided to a different antenna 420.
In a transmission from the second communications apparatus 410 to the first communications apparatus 450, each receiver 454 receives a signal through its respective antenna 452 at the first communications apparatus 450. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to a receive processor 456. The receive processor 456 and the multiple antenna receive processor 458 implement 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 streams from receiver 454. Receive processor 456 converts the received analog precoded/beamformed baseband multicarrier symbol stream from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered at a receive processor 456 and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second 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 functions of the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In transmissions from the second communications device 410 to the first communications device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the second communications device 410. The upper layer packet is then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.
In a transmission from the first communications device 450 to the second communications device 410, an upper layer data packet is provided at the first communications device 450 to the controller/processor 459 using a data source 467. Data source 467 represents all protocol layers above the L2 layer. Similar to the send function at the second communications apparatus 410 described in the transmission from the second communications apparatus 410 to the first communications apparatus 450, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels, implementing L2 layer functions for the user plane and control plane. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to said second communications device 410. The transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming, by the multi-antenna transmit processor 457, and then the transmit processor 468 modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are provided to the different antennas 452 via the transmitter 454 after analog precoding/beamforming in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and provides the radio frequency symbol stream to the antenna 452.
In a transmission from the first communication device 450 to the second communication device 410, the functionality at the second communication device 410 is similar to the receiving functionality at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives an rf signal through its respective antenna 420, converts the received rf signal to a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multiple antenna receive processor 472 collectively implement the functionality of the L1 layer. The controller/processor 475 implements the L2 layer functions. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In transmission from the first communication device 450 to the second communication device 410, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the first communication device 450. The upper layer data packets from the controller/processor 475 may be provided to all protocol layers above the core network or L2 layer, and various control signals may also be provided to the core network or L3 for L3 processing.
As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, for use with the at least one processor, the first communication device 450 apparatus at least: monitoring target signaling during active time; receiving a first signaling, wherein the first signaling comprises a first domain, and the first signaling indicates a target time frequency resource block; maintaining a first timer in accordance with the first domain of at least the first signaling; wherein the state of the first timer is kept unchanged when the value of the first domain of the first signaling is one of a first set of candidate values; initializing or keeping unchanged a state of the first timer when the value of the first domain of the first signaling is one of a second set of candidate values; the active time includes a time when the first timer is in a running state.
As an embodiment, the first communication device 450 apparatus includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a first signaling, wherein the first signaling comprises a first domain, and the first signaling indicates a target time-frequency resource block; maintaining a first timer in accordance with the first domain of at least the first signaling; wherein the state of the first timer is kept unchanged when the value of the first domain of the first signaling is one of a first set of candidate values; initializing or keeping unchanged a state of the first timer when the value of the first domain of the first signaling is one of a second set of candidate values; the active time includes a time when the first timer is in a running state.
As an embodiment, the second communication device 410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, for use with the at least one processor, the first communication device 450 apparatus at least: sending a first signaling, wherein the first signaling comprises a first domain, and the first signaling indicates a target time-frequency resource block; wherein target signaling is monitored by a recipient of the first signaling at an active time; a first timer is maintained by the recipient of the first signaling according to at least the first domain of the first signaling; when the value of the first domain of the first signaling is one of a first set of candidate values, the state of the first timer remains unchanged; when the value of the first domain of the first signaling is one of a second set of candidate values, the first timer is initialized or a state of the first timer remains unchanged; the active time includes a time when the first timer is in a running state.
As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: sending a first signaling, wherein the first signaling comprises a first domain, and the first signaling indicates a target time-frequency resource block; wherein target signaling is monitored by a recipient of the first signaling at an active time; a first timer is maintained by the recipient of the first signaling according to at least the first domain of the first signaling; the state of the first timer remains unchanged when the value of the first domain of the first signaling is one of a first set of candidate values; when the value of the first domain of the first signaling is one of a second set of candidate values, the first timer is initialized or a state of the first timer remains unchanged; the active time includes a time when the first timer is in a running state.
For one embodiment, the first communication device 450 corresponds to a first node in the present application; the second communication device 410 corresponds to a second node in the present application.
As an embodiment, the first communication device 450 corresponds to a second node in the present application; the second communication device 410 corresponds to a third node in the present application.
For one embodiment, the first communication device 450 is a UE.
As an embodiment, the first communication device 450 is a V2X capable user device.
As an embodiment, the first communication device 450 is a D2D-enabled user equipment.
As an example, the first communication device 450 is a vehicle-mounted device.
For one embodiment, the first communication device 450 is an RSU.
For one embodiment, the second communication device 410 is a UE.
As an embodiment, the second communication device 410 is a V2X capable user equipment.
As an embodiment, the second communication device 410 is a D2D-enabled user equipment.
As an example, the second communication device 410 is an in-vehicle device.
For one embodiment, the second communication device 410 is an RSU device.
For one embodiment, the second communication device 410 is a base station.
For one embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 is configured to send the target signaling in this application.
As an example, at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 may be configured to send the first signaling herein.
For one embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller/processor 459 is configured to receive first signaling in the present application.
For one embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 is configured to send the first set of messages.
For one embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller/processor 459 is configured to receive the first set of messages in the present application.
For one embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, and the controller/processor 475 is configured to send the second message.
For one embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, and the controller/processor 459 is configured to receive a second message in accordance with the present application.
Example 5
Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in fig. 5. The steps in the dashed box F0 are optional.
ForFirst node U51Monitoring the target signaling in step S511; receiving a first signaling in step S512; the first timer is maintained in step S513.
For theSecond node U52Receiving a first set of messages in step S521; determining a first time-frequency resource pool in step S522; transmitting a first signaling in step S523; the second message is received in step S524.
For theSecond node N53Sending a first set of messages in step S531; the second message is transmitted in step S532.
In embodiment 5, target signaling is monitored for an active time; receiving a first signaling, wherein the first signaling comprises a first domain, and the first signaling indicates a target time-frequency resource block; maintaining a first timer in accordance with the first domain of at least the first signaling; wherein the state of the first timer is kept unchanged when the value of the first domain of the first signaling is one of a first set of candidate values; initializing or keeping unchanged a state of the first timer when the value of the first domain of the first signaling is one of a second set of candidate values; the active time comprises a time when the first timer is in a running state; maintaining the first timer according to whether the first wireless signal is a new transmission; wherein the first wireless signal is scheduled by the first signaling; receiving a first set of messages by a sender of the first signaling before sending the first signaling, the first set of messages indicating a first time-frequency resource pool, the first time-frequency resource pool comprising at least one time-frequency resource block; when the target time-frequency resource block belongs to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the first candidate value sets; when the target time-frequency resource block does not belong to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the second candidate value sets; the first set of messages is used to indicate configuration authorization; receiving, by the sender of the first signaling, a second message after sending the first signaling, the second message being used to determine time domain resources of a last time-frequency resource block included in the first time-frequency resource pool; the first node is configured for discontinuous reception; maintaining the first timer in accordance with the first domain of at least the first signaling only when the first signaling indicates at least one non-broadcast transmission. It should be noted that step S511 at the first node and other steps at the first node have no fixed time sequence relationship, and step S511 may occur before step S512, step S511 may occur between step S512 and step S513, and step S511 may also occur after step S513.
As one embodiment, the first wireless signal is scheduled by the first signaling.
In one embodiment, the first wireless signal is the first psch.
As one embodiment, the phrase the first wireless signal is scheduled by the first signaling comprises: the first wireless signal is scheduled by the first stage SCI included in the first signaling.
As an embodiment, the first signaling indicates at least one new transmission.
As one embodiment, the first signaling indicates at least one retransmission.
As one embodiment, the first wireless signal includes a new transmission.
For one embodiment, the first wireless signal includes a retransmission.
As an embodiment, the time domain resource occupied by the first wireless signal belongs to the active time.
As one embodiment, the first timer is maintained according to whether the first wireless signal is a new transmission.
As one embodiment, the phrase maintaining the first timer in dependence on whether the first wireless signal is a new transmission comprises: initializing the first timer when the value of the first domain of the first signaling is one of a second set of candidate values and the first wireless signal is a new transmission.
As a sub-embodiment of the above embodiment, the first signaling comprises only physical layer signaling indicating at least one new transmission.
As one embodiment, the phrase maintaining the first timer in dependence on whether the first wireless signal is a new transmission comprises: maintaining a state of the first timer unchanged when the value of the first domain of the first signaling is one of a second set of candidate values and the first wireless signal is a retransmission.
As a sub-embodiment of the above embodiment, the first signaling comprises only physical layer signaling indicating at least one retransmission.
As an embodiment, indicating the first wireless signal as a New transmission when an NDI (New Data Indication) included in the first signaling is inverted (toggled) compared to an NDI included in one SCI signaling that was most recently received by the first node before receiving the first signaling; wherein, a HARQ (Hybrid Automatic Repeat Request) process number (process ID) included in the first signaling is the same as a HARQ process number included in the one SCI signaling that is received most recently before the first signaling is received.
As a sub-embodiment of the foregoing embodiment, the NDI included in the one SCI signaling that is received most recently before the first signaling is received is 0, and the NDI included in the first signaling is 1, indicating that the NDI included in the first signaling is inverted.
As a sub-embodiment of the foregoing embodiment, the NDI included in the one SCI signaling that is received most recently before the first signaling is received is 1, and the NDI included in the first signaling is 0, indicating that the NDI included in the first signaling is inverted.
As an embodiment, a Transport Block (TB) included in the first wireless signal is received for the first time, and the first wireless signal is a new transmission.
As an embodiment, the first wireless signal comprises a transmission block without a previous NDI, and the first wireless signal is a new transmission.
As an embodiment, the first wireless signal is indicated as a retransmission when the NDI included in the first signaling is the same as the NDI included in one SCI signaling that was most recently received by the first node before receiving the first signaling; wherein, the HARQ process number included in the first signaling is the same as the HARQ process number included in the one SCI signaling received recently before the first signaling is received.
As an embodiment, the second node receives the first set of messages before sending the first signaling.
For one embodiment, the first set of messages is sent by the third node.
As an embodiment, the first set of messages is received over a Uu interface.
As an embodiment, the first set of messages is received over DL.
As an embodiment, the first set of messages is received over a PC5 interface.
As an embodiment, the first set of messages is used to indicate configuration authorization.
As an embodiment, the first set of messages includes a first configured grant index indicating a first configured grant indicating a first pool of time-frequency resources.
As an embodiment, the second node stores the first configuration authorization indicated by the first set of messages.
As one embodiment, the first configuration grant is a configured sidelink grant.
As an embodiment, the first configuration grant is a configuration grant type (type) 1.
As one embodiment, the first configuration grant is a configuration grant type (type) 2.
As an embodiment, the first set of messages comprises a SL-configuredrgrantconfig (Information element) IE used to indicate the first configuration authorization.
For one embodiment, the first set of messages includes only the first RRC message.
As an embodiment, the first RRC message includes a configuration message of the configuration grant type 1.
As an embodiment, the first RRC message indicates the first time-frequency resource pool.
In an embodiment, the first time-frequency resource pool includes at least one time-frequency resource block set.
In an embodiment, the first time-frequency resource pool includes a periodic set of time-frequency resource blocks.
As an embodiment, the one set of time-frequency resource blocks includes 1 time-frequency resource block.
As an embodiment, the one set of time-frequency resource blocks includes at least 1 and at most 3 time-frequency resource blocks.
As an embodiment, the one set of time-frequency resource blocks comprises no more than 32 time-frequency resource blocks.
As an embodiment, the frequency domain resource sizes of at least one time frequency resource block included in the one time frequency resource block set are the same; wherein the one set of time-frequency resource blocks comprises not less than 2 time-frequency resource blocks.
As an embodiment, the time interval between the time domain resource of any one time frequency resource block included in the one time frequency resource block set except the first time frequency resource block and the time domain resource of the first time frequency resource block included in the one time frequency resource block set is a positive integer of no less than 1 and no more than 31; wherein the one set of time frequency resource blocks comprises not less than 2 time frequency resource blocks.
As an embodiment, the one set of time-frequency resource blocks is used for transmission of at least one Transport Block (TB).
For one embodiment, the first set of messages indicates a first pool of time-frequency resources.
As an embodiment, the first RRC message includes the first configuration grant index.
As an embodiment, the first RRC message includes sl-TimeReferenceSFN-Type1 (sidelink-time reference system frame number-Type 1); the sl-TimeReferenceSFN-Type1 explicitly indicates a first reference SFN (System Frame Number).
As an embodiment, when the first RRC message does not include the sl-TimeReferenceSFN-Type1, the first reference SFN is 0.
As an embodiment, the first reference SFN is one of a value of 0 or 512.
As an embodiment, the first reference SFN is a natural number between 0 and 1024, including 0.
As an embodiment, the first RRC message includes sl-PeriodCG (sidelink-configuration grant period), sl-TimeOffsetCG-Type1 (sidelink-configuration grant time offset-Type 1), and sl-TimeResourceCG-Type1 (sidelink-configuration grant time domain resource-Type 1).
As an embodiment, the sl-PeriodCG explicitly indicates a time domain periodicity of the set of time-frequency resource blocks comprised in the first pool of time-frequency resources.
As an embodiment, the sl-TimeOffsetCG-Type1 indicates a first time offset indicating a time offset for a 1 st slot included in a frame indicated by the first reference SFN, the first time offset being represented in logical slots.
As an embodiment, the starting time domain resource of the first time-frequency resource pool is obtained according to the value of the first reference SFN and the value of the first time offset.
As an embodiment, the starting time domain resource of the first time-frequency resource pool is a first sidelink timeslot where the first time-frequency resource block included in the first time-frequency resource set included in the first time-frequency resource pool is located.
As an embodiment, the sl-TimeResourcecCG-Type 1 is TRIV (Time Resource Indication Value).
As an embodiment, the sl-TimeResourceCG-Type1 indicates a time interval between a time domain resource of at least one time frequency resource block included in any time frequency resource block set included in the first time frequency resource pool and a time domain resource of a first time frequency resource block included in the any time frequency resource block set included in the first time frequency resource pool; the time intervals are represented in logical time slots.
As an embodiment, the first reference SFN, the sl-TimeOffsetCG-Type1 and the sl-TimeResourceCG-Type1 are used to determine time domain resources of a first set of time-frequency resource blocks comprised in the first time-frequency resource pool.
As an embodiment, the time domain resources of one set of time frequency resource blocks comprises time domain resources of at least one time frequency resource block comprised in said one set of time frequency resource blocks.
As an embodiment, the last starting slot of the frame indicated by the first reference SFN after the slot indicated by the first time offset before receiving the first information set is the starting time domain resource of the first time frequency resource pool.
As an embodiment, the first reference SFN, the sl-TimeOffsetCG-Type1 and the sl-PeriodCG are used to determine time domain resources of a first time frequency resource block comprised in any set of time frequency resource blocks comprised in the first time frequency resource pool.
As an embodiment, the second node receives a system message sent by the third node, where the system message includes an SFN (system frame Number).
For one embodiment, the second node and the third node are synchronized.
For one embodiment, the first node and the second node are synchronized.
As one embodiment, the first node and the third node are synchronized.
As an example, every time a frame is passed, the value of the SFN is incremented by 1; setting the value of the SFN to 0 when the value of the SFN reaches 1024.
As one embodiment, one frame includes 10 subframes, and one subframe includes 1 ms.
As an embodiment, when the subcarrier spacing of the frequency domain resources of the first time-frequency resource pool is 15 × 2 μ On KHz, one sub-frame consists of 2 μ One time slot, one frame including 10 × 2 μ And each time slot, wherein mu can take the value of 0,1,2,3,4.
As an example, all slots comprised by a frame are reserved for sidelink transmission.
As an embodiment, at least one slot comprised by a frame is reserved for sidelink transmissions.
As one embodiment, a frame includes slots reserved for sidelink transmissions as logical slots.
As an embodiment, the time slot number X of the logical time slot of the time domain resource of the first time frequency resource block in the S1+1 th time frequency resource block set included in the first time frequency resource pool in a frame is (SFN X number of sub-link time slots per frame) + X]= (first reference SFN x number of secondary link slots per frame + said value of first time offset + S1 x PeriodicitySL 1) modulo (1024 x number of secondary link slots per frame); the SFN is a frame number of a frame in which a time domain resource of the first time frequency resource block included in the S1+1 th time frequency resource block set is located; the time slot number of each frame of the secondary link is the logical time slot number used for transmitting the secondary link and included in one frame; the above-mentioned
Figure BDA0003146791060000141
Wherein the T1 is the sl-PeriodCG; the N1 is the time slot number which can be used for the transmission of the secondary link in 20ms configured by the network;
Figure BDA0003146791060000142
represents a ceiling operation; modulo represents a modulo operation; the values of S1 include 0,1 and positive integers greater than 1.
As an embodiment, the time domain resource of the first time frequency resource block comprised in any set of time frequency resource blocks comprised in the first time frequency resource pool is determined according to the method described in section 5.8.3 of the 3GPP standard 38.321 protocol.
As an embodiment, when the number of time-frequency resource blocks included in any time-frequency resource block set included in the first time-frequency resource pool is 1, the TRIV is 0.
As an embodiment, when the number of the time-frequency resource blocks included in any time-frequency resource block set included in the first time-frequency resource pool is 2, a time-frequency resource of a time-frequency resource block of a first time-frequency resource block included in the any time-frequency resource block set included in the first time-frequency resource pool after the time-frequency resource block passes through the TRIV time interval is a time-frequency resource of a second time-frequency resource block included in the any time-frequency resource block set included in the first time-frequency resource pool; wherein the time interval is represented in logical time slots; the TRIV is a positive integer between 1 and 31, including 1 and 31.
As an embodiment, when the number of the time-frequency resource blocks included in any time-frequency resource block set included in the first time-frequency resource pool is 3, if t is t 2 -t 1 -1 ≦ 15, according to the TRIV =30 (t) 2 -t 1 -1)+t 1 +31 obtaining said t 1 And said t 2 (ii) a If t is 2 -t 1 -1 > 15, according to said TRIV =30 (31-t) 2 +t 1 )+62-t 1 Obtaining the t 1 And said t 2 (ii) a The time domain resource of the first time frequency resource block included in any time frequency resource block set included in the first time frequency resource pool passes through the t 1 The time domain resource after the time interval is the time domain resource of the second time frequency resource block included in any time frequency resource block set included in the first time frequency resource pool; any time-frequency resource block set included in the first time-frequency resource pool includesThe time domain resource of the first time frequency resource block of (2) passes through the t 2 The time domain resource after the time interval is the time domain resource of the third time frequency resource block included in any time frequency resource block set included in the first time frequency resource pool; wherein the time interval is represented in logical time slots; said t is 1 Is a positive integer between 1 and 30, including 1 and 30; said t is 2 Is greater than t 1 And not more than 31.
As an embodiment, the time domain resource of at least one time frequency resource block comprised in the first set of time frequency resource blocks comprised in the first pool of time frequency resources is determined according to the method described in section 8.1.5 of the 3GPP standard 38.214 protocol.
As an embodiment, the first RRC message includes sl-resourcepooli id (sidelink-resource pool identification), sl-startsubhannelcg-Type 1 (sidelink-configuration grant start subchannel-Type 1), and sl-FreqResourceCG-Type1 (sidelink-configuration grant frequency domain resource-Type 1).
As an embodiment, the sl-resourcepooolid is a first secondary link resource pool identifier, and the first secondary link resource pool identifier indicates a secondary link resource pool to which the first time-frequency resource pool belongs.
For one embodiment, the secondary link resource pool indicated by the first secondary link resource pool identification comprises
Figure BDA0003146791060000151
A sub-channel.
In one embodiment, the secondary link resource pool indicated by the first secondary link resource pool identifier is reserved for secondary link transmission.
As an example, the sl-StartSubchannelCG-Type1 is
Figure BDA0003146791060000152
As an embodiment, the sl-startsubchannel cg-Type1 indicates a starting subchannel index of a frequency-domain resource of a first time-frequency resource block included in any set of time-frequency resource blocks included in the first time-frequency resource pool.
As an embodiment, the sl-FreqResourcecCG-Type 1 is FRIV (Frequency Resource Indication Value).
As an embodiment, the sl-FreqResourceCG-Type1 indicates a frequency domain resource of at least one time frequency resource block included in any set of time frequency resource blocks included in the first time frequency resource pool.
As an embodiment, the sl-ResourcePoolID, the sl-StartSubchannelCG-Type1 and the sl-FreqResourceCG-Type1 are used to determine frequency domain resources of at least one time-frequency resource block comprised in any set of time-frequency resource blocks comprised in the first time-frequency resource pool.
As an embodiment, the frequency domain resources of one set of time-frequency resource blocks comprises frequency domain resources of at least one time-frequency resource block comprised in said one set of time-frequency resource blocks.
As an example, L subCH The number of sub-channels included in any time-frequency resource block included in the first time-frequency resource pool is obtained.
As an embodiment, when the number of SCI maximum indication time-frequency resource blocks configured for the sidelink resource pool to which the first time-frequency resource pool belongs is 1, the L is subCH Is the FRIV.
As an embodiment, when the maximum SCI of the secondary link resource pool configuration to which the first time-frequency resource pool belongs indicates that the number of time-frequency resource blocks is 2, according to the first time-frequency resource pool configuration, the method further includes the step of allocating a secondary link resource pool to the first time-frequency resource pool according to the first time-frequency resource pool configuration
Figure BDA0003146791060000153
To obtain
Figure BDA0003146791060000154
And L subCH Wherein, the
Figure BDA0003146791060000155
A start sub-channel of a frequency domain resource of a second time frequency resource block included in any time frequency resource block set included in the first time frequency resource poolThe track index.
As an embodiment, when the maximum SCI indication time-frequency resource block number configured for the sidelink resource pool to which the first time-frequency resource pool belongs is 3, according to the SCI indication time-frequency resource block number, the sidelink resource pool is configured to include the first time-frequency resource pool
Figure BDA0003146791060000156
Figure BDA0003146791060000157
To obtain
Figure BDA0003146791060000158
And L subCH Wherein, the
Figure BDA0003146791060000159
Indexing an initial sub-channel of a frequency domain resource of a second time frequency resource block included in any time frequency resource block set included in the first time frequency resource pool; the described
Figure BDA0003146791060000161
And the starting sub-channel index of the frequency domain resource of the third time frequency resource block included in any time frequency resource block set included in the first time frequency resource pool is obtained.
As an embodiment, the L is consecutive from the subchannel indicated by the starting subchannel index of the frequency domain resource of any time-frequency resource block included in the first time-frequency resource pool subCH The sub-channel is the frequency domain resource position of any time frequency resource block included in the first time frequency resource pool.
As an embodiment, the frequency domain resources of said at least one time frequency resource block comprised in said any set of time frequency resource blocks comprised in said first pool of time frequency resources are determined according to the description in section 8.1.5 of the 3GPP standard 38.214 protocol.
As one embodiment, the first set of messages includes a second RRC message and a first DCI.
As an embodiment, the second set of RRC messages includes the SL-configuredgontconfig IE.
In one embodiment, the second RRC message includes the first configuration grant index.
As an embodiment, the second RRC message and the first DCI are used together to indicate the first time-frequency resource pool.
As an embodiment, the second RRC message includes a configuration message of the configuration grant type 2.
As an embodiment, the second RRC message includes the sl-resourcepooolid.
For one embodiment, the second RRC message includes the sl-PeriodCG.
As an embodiment, a reception time of the first DCI is later than a reception time of the second RRC message.
As one embodiment, the first DCI is used to activate the configuration authorization type 2.
As an embodiment, the second node sends a third message in response to receiving the first DCI.
As an embodiment, the third message is used to acknowledge receipt of the first DCI.
As an embodiment, the recipient of the third message is the third node.
As an embodiment, the third message is a MAC CE.
As one embodiment, the first DCI includes the first configuration authorization index.
As one embodiment, the first DCI includes the first secondary link resource pool identification.
As an embodiment, the first DCI indicates a second time offset, where the second time offset indicates a time interval between a time slot of the starting time domain resource of the first time frequency resource pool and a receiving time slot of the first DCI.
As an embodiment, the second time offset is expressed in time slots.
As an embodiment, the second time offset is represented in logical time slots.
As an embodiment, the second time offset includes a positive integer number of slots not less than 1.
For one embodiment, the second time offset includes a positive integer number of logical slots not less than 1.
As one embodiment, the first DCI includes a time domain resource allocation (time resource allocation); the time domain resource allocation is the TRIV.
As one embodiment, the first DCI includes a frequency domain resource allocation (frequency resource allocation); the frequency domain resource allocation is the FRIV.
As one embodiment, the first DCI includes an initial transmission lowest subchannel index, and the initial transmission lowest subchannel index is the first DCI
Figure BDA0003146791060000162
As an embodiment, the TRIV and the sl-PeriodCG are used to determine time domain resources of any set of time-frequency resource blocks included in the first pool of time-frequency resources.
As an embodiment, the slot number Y of the logical slot in a frame of the time domain resource of the first time frequency resource block included in the S2+1 th time frequency resource block set included in the first time frequency resource pool satisfies [ (SFN x number of sub-link slots per frame) + Y]A slot of = (starting SFN × number of secondary link slots per frame + starting logical slot + S2 × PeriodicitySL 2) module (1024 × number of secondary link slots per frame); wherein the SFN indicates a frame in which a time domain resource of the first time frequency resource block included in the S2+1 th time frequency resource block set included in the first time frequency resource pool is located; the starting SFN indicates a frame to which the starting time domain resource of the first time-frequency resource pool belongs; the starting logic time slot is the time slot of the starting time domain resource of the first time-frequency resource pool; the described
Figure BDA0003146791060000163
Wherein the T2 is the sl-PeriodCG; said N2 is a netThe number of time slots which can be used for the secondary link transmission in 20ms of the network configuration;
Figure BDA0003146791060000164
represents a ceiling operation; modulo represents a modulo operation; the value of S2 includes 0,1 and positive integers more than 1.
As an embodiment, when the number of time-frequency resource blocks included in any time-frequency resource block set included in the first time-frequency resource pool is 1,2, or 3, respectively, the method for determining the time-frequency resource of at least one time-frequency resource block included in any time-frequency resource block set included in the first time-frequency resource pool according to the TRIV is the same as described above, and is not repeated here.
As an embodiment, when the number of the time-frequency resource blocks included in any time-frequency resource block set included in the first time-frequency resource pool is 1,2, or 3, respectively, the method for determining the frequency domain resource of at least one time-frequency resource block included in any time-frequency resource block set included in the first time-frequency resource pool according to the FRIV is the same as described above, and is not repeated here.
As an embodiment, the second node determines the value of the first domain of the first signaling according to whether the target time-frequency resource block is indicated by the first configuration grant.
As an embodiment, when the target time-frequency resource block is indicated by the first configuration grant, the value of the first domain of the first signaling is one of the first set of candidate values.
As an embodiment, when the target time-frequency resource block is indicated by a configuration grant, the value of the first domain of the first signaling is one of the first set of candidate values; wherein the configuration authorization comprises the first configuration authorization.
As an embodiment, when the target time-frequency resource block is dynamically scheduled, the value of the first field of the first signaling is one of the second set of candidate values.
As an embodiment, the second node determines the value of the first domain of the first signaling according to whether the target time-frequency resource block belongs to the first time-frequency resource pool.
As an embodiment, when the target time-frequency resource block belongs to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the first candidate value sets.
As an embodiment, when the target time-frequency resource block does not belong to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the second candidate value sets.
As an embodiment, the first field of the first signaling comprises 1 bit; when the target time-frequency resource block belongs to the first time-frequency resource pool, the value of the first domain included in the first signaling is 1; when the target time-frequency resource block does not belong to the first time-frequency resource pool, the value of the first domain included in the first signaling is 0.
As an embodiment, the first field of the first signaling comprises 1 bit; when the target time-frequency resource block is indicated by a configuration authorization, the value of the first domain included in the first signaling is 1; when the target time-frequency resource block is dynamically scheduled, the value of the first domain included in the first signaling is 0; wherein the configuration authorization comprises the first configuration authorization.
As an embodiment, the first field of the first signaling comprises 2 bits; when the target time-frequency resource block belongs to the first time-frequency resource pool, the value of the first domain included in the first signaling is one of 01 and 10; when the target time-frequency resource block does not belong to the first time-frequency resource pool, the value of the first domain included in the first signaling is 00.
As an embodiment, the first field of the first signaling comprises 2 bits; when the target time-frequency resource block is indicated by configuration authorization, the value of the first domain included in the first signaling is one of 01 or 10; when the target time-frequency resource block is dynamically scheduled, the value of the first domain included in the first signaling is 00; wherein the configuration authorization comprises the first configuration authorization.
As a sub-embodiment of the above two embodiments, when the value of the first domain included in the first signaling is 01, indicating that the target time-frequency resource block is indicated by a configuration grant type 1; when the value of the first domain included in the first signaling is 10, indicating that the target time-frequency resource block is indicated by a configuration authorization type 2; when the value of the first domain included in the first signaling is 00, indicating that the target time-frequency resource block is dynamically scheduled.
As a sub-embodiment of the two above-mentioned embodiments, when the value of the first field comprised by the first signaling is 11, it is indicated as reserved.
As an embodiment, the second node receives the second message after sending the first signaling.
As an embodiment, the sender of the second message is the third node.
In one embodiment, a second message is received, the second message being used to determine a last time-frequency resource block included in the first time-frequency resource pool.
As an embodiment, the time domain resource of any time-frequency resource block included in the first time-frequency resource pool is earlier than the time domain resource occupied by the second message.
As an embodiment, a time domain resource of any time-frequency resource block included in the first time-frequency resource pool is not later than the time domain resource occupied by the second message.
As an embodiment, a closest one of the time-frequency resource blocks included in the first time-frequency resource pool before the reception time of the second message is the last time-frequency resource block included in the first time-frequency resource pool.
As an embodiment, the second message is used to deactivate the first configuration authorization.
For one embodiment, the second message includes the first configuration authorization index.
As an embodiment, the second message is an RRC message; the second message is used to reconfigure sidelink communications for network scheduling.
As an embodiment, the second message is a second DCI.
As an embodiment, the second node sends a fourth message in response to receiving the second DCI.
As an embodiment, the fourth message is used to acknowledge receipt of the second DCI.
As an embodiment, the recipient of the fourth message is the third node.
As an embodiment, the fourth message is a MAC CE.
As one embodiment, the first node is configured with Discontinuous Reception (DRX).
As an embodiment, the DRX parameters are configured by the network.
As an embodiment, the DRX parameters are configured by the second node.
As one embodiment, the DRX parameter is configured by an SIB (System Information Block).
As an embodiment, the DRX parameters are configured by a DRX-Config (DRX configuration) IE included in the RRC message.
As an embodiment, the DRX parameters are configured by rrcreeconfigurationsidelink (RRC reconfiguration).
For one embodiment, the DRX parameter includes an expiration value of the first timer.
As an embodiment, the DRX parameter comprises an outdated value of the second timer.
As an embodiment, the DRX parameter indicates a time slot for initializing the second timer; wherein the second timer is a duration timer.
As an embodiment, the first timer is maintained according to the first domain of at least the first signaling only when the first signaling indicates at least one non-broadcast transmission.
As a sub-embodiment of the above embodiment, the first signaling comprises only physical layer signaling indicating at least one unicast transmission or at least one multicast transmission.
As a sub-embodiment of the above embodiment, the first signaling comprises only physical layer signaling indicating at least one unicast new transmission or at least one multicast new transmission.
As an embodiment, the first timer is maintained according to the first domain of at least the first signaling only if the first signaling indicates at least one new transmission.
As a sub-embodiment of the above embodiment, the first signaling comprises only physical layer signaling indicating at least one unicast transmission or at least one multicast transmission.
As an embodiment, the first signaling comprises at least part of bits of the first identity.
As an embodiment, the first identity is a destination layer 2 identity (destination layer 2 ID).
As an embodiment, the destination layer 2 identifier is a link layer identifier (link layer ID).
As an embodiment, the destination layer 2 identity indicates a node.
As an embodiment, the destination layer 2 identity indicates a multicast group.
As an embodiment, the destination layer 2 identity indicates a broadcast service.
As an embodiment, the first identity comprises 24 bits.
As an embodiment, the second stage SCI comprised by the first signaling comprises low (least significant) 16 bits of the first identity.
As an embodiment, the second stage SCI comprised by the first signaling comprises low (least significant) 16 bits of the first identity; the first wireless signal includes a high (most significant) 8 bits of the first identity.
As an embodiment, the first signaling indicates the first node when the first signaling indicates a unicast transmission.
As an embodiment, when the first signaling indicates a multicast transmission, the first signaling indicates a multicast group in which the first node is located.
Example 6
Embodiment 6 illustrates a schematic diagram of a target time-frequency resource block according to an embodiment of the present application, as shown in fig. 6.
As an embodiment, the target time-frequency resource block is used for the first PSCCH and the first PSCCH transmissions; wherein the first PSCCH carries the first stage SCI of the first signaling; the first PSSCH carries the second-stage SCI and a TB block of the first signaling.
As an embodiment, the TB block belongs to a SL-SCH channel.
As an embodiment, the TB block is a MAC CE.
As an embodiment, the starting sub-channel of the first PSCCH and the starting sub-channel of the first PSCCH are the same.
As an embodiment, the first symbol immediately following the first PSCCH is a starting symbol of the first PSCCH.
As an embodiment, the starting symbol of the first PSCCH and the starting symbol of the first PSCCH are the same.
As an embodiment, the first PSCCH and the first PSCCH are in the same secondary link slot.
In case a of embodiment 6, the first PSCCH and the first PSCCH occupy the same frequency domain resources in the frequency domain, and are orthogonal and adjacent in the time domain.
In case B of embodiment 6, the first PSCCH and the first PSCCH have the same starting symbol in the time domain and overlap (overlapping) in both the time domain and the frequency domain.
Example 7
Embodiment 7 illustrates a first time-frequency resource pool diagram according to an embodiment of the present application, as shown in fig. 7. In fig. 7, a slash box represents a time-frequency resource block, and a bold box represents a time-frequency resource block set.
In an embodiment, the first time-frequency resource pool includes a periodic set of time-frequency resource blocks.
In one embodiment, the first time-frequency resource pool includes a non-periodic set of time-frequency resource blocks.
As an embodiment, the frequency domain resources of any two time-frequency resource blocks included in the first time-frequency resource pool are the same.
As an embodiment, the number of physical resource blocks included in any two time-frequency resource blocks included in the first time-frequency resource pool is the same.
As an embodiment, the number of subchannels included in any two time-frequency resource blocks included in the first time-frequency resource pool is the same.
In case a of embodiment 7, any one set of time-frequency resource blocks included in the first time-frequency resource pool includes only one time-frequency resource block.
In case B of embodiment 7, any set of time-frequency resource blocks included in the first time-frequency resource pool includes two time-frequency resource blocks; the two time frequency resource blocks in any time frequency resource block set in the first time frequency resource pool have the same sub-channel number; the two time-frequency resource blocks included in any time-frequency resource block set have different starting sub-channels, which are respectively a starting sub-channel 1 and a starting sub-channel 2 as shown in the figure.
In case C of embodiment 7, any one time-frequency resource block set included in the first time-frequency resource pool includes three time-frequency resource blocks; the three time frequency resource blocks in any time frequency resource block set in the first time frequency resource pool have the same number of sub-channels; the three time frequency resource blocks included in any time frequency resource block set have different starting sub-channels, which are respectively a starting sub-channel 1, a starting sub-channel 2 and a starting sub-channel 3 as shown in the figure.
It should be noted that the starting sub-channel 1, the starting sub-channel 2 and the starting sub-channel 3 only represent different indexes of the starting sub-channel, and do not represent the size of the starting sub-channel index.
As an embodiment, the target time-frequency resource block is a time-frequency resource block included in a time-frequency resource block set included in the first time-frequency resource pool.
Example 8
Embodiment 8 illustrates a relationship diagram of a first reference SFN, a first time offset, a first DCI, a second time offset, and a first time-frequency resource pool according to an embodiment of the present application, as shown in fig. 8. In fig. 8, a slash box indicates a time domain resource of a time-frequency resource block set included in the first time-frequency resource pool. It should be noted that, if one time-frequency resource block set includes more than one time-frequency resource block, the time-domain resources of more than one time-frequency resource block may be discontinuous.
As an embodiment, the time domain resources of one set of time frequency resource blocks comprises time domain resources of at least one time frequency resource block comprised in said one set of time frequency resource blocks.
As an embodiment, the frequency domain resources of one set of time-frequency resource blocks comprises frequency domain resources of at least one time-frequency resource block comprised in said one set of time-frequency resource blocks.
As an embodiment, according to the first reference SFN, the first time offset and a time domain cycle of a set of time-frequency resource blocks included in the first time-frequency resource pool, a starting time domain resource of any set of time-frequency resource blocks included in the first time-frequency resource pool is obtained.
As an embodiment, a starting time domain resource of any time frequency resource block set included in the first time frequency resource pool is a sidelink timeslot where a first time frequency resource block included in the any time frequency resource block set included in the first time frequency resource pool is located.
In the case a of embodiment 8, taking an example that any one time-frequency resource block set included in the first time-frequency resource pool includes only one time-frequency resource block, the first node receives the first RRC message, and the first node determines that a time-domain resource occupied by the first RRC message is a slot with a slot number of 4 in a 26 th frame; the first RRC message indicates that the first reference SFN is 0, and the value of the first time offset is 268 slots, it may be determined that the initial time domain resource of the first time-frequency resource pool is a slot with a slot number of 8 in a 26 th frame, that is, a 4 th slot after the receiving slot of the first RRC message; and then determining the time domain resource of one time frequency resource block in any time frequency resource block set in the first time frequency resource pool according to the time domain period of the time frequency resource block set in the first time frequency resource pool.
As an embodiment, the starting time domain resource of the first time-frequency resource pool is obtained according to the receiving time of the first DCI, the second time offset, and a time domain period of a time-frequency resource block set included in the first time-frequency resource pool.
In the case B of embodiment 8, taking the example that any one time-frequency resource block set included in the first time-frequency resource pool only includes one time-frequency resource block, the second RRC message indicates a time domain period of the time-frequency resource block set included in the first time-frequency resource pool; the first node receives the first DCI, and the first node determines that a time domain resource occupied by the first DCI is a time slot with a time slot number of 1 in a 26 th frame; if the first DCI indicates that the second time offset has a value of 8, it may be determined that the starting time domain resource of the first time/frequency resource pool is a time slot with a time slot number of 9 in the 26 th frame; and then determining the time domain resource of one time frequency resource block in any time frequency resource block set in the first time frequency resource pool according to the time domain period of the time frequency resource block set in the first time frequency resource pool.
As an embodiment, the starting time domain resource of the first time-frequency resource pool is not earlier than the receiving time of the first message set.
As an embodiment, the starting time domain resource of the first time-frequency resource pool is later than the reception time of the first set of messages.
Example 9
Embodiment 9 illustrates a schematic diagram of a time slot and a logical time slot according to an embodiment of the present application, as shown in fig. 9. In fig. 9, the slashed boxes represent time slots reserved for Sidelink (SL) transmission, and the slashed boxes represent time slots reserved for Downlink (DL) or Uplink (UL) transmission.
As one embodiment, the time slots reserved for the sidelink are contiguous in the time domain.
As one embodiment, the time slots reserved for the sidelink are not contiguous in the time domain.
As one embodiment, the time slots reserved for sidelink transmissions constitute logical time slots.
For one embodiment, the logical time slot is a time slot for sidelink transmission.
As one embodiment, the logical time slots are consecutive in logical time.
In case a of embodiment 9, the time slots reserved for sidelink transmission are consecutive in the time domain.
In case B of embodiment 9, the time slots reserved for sidelink transmission are not contiguous in the time domain, but are contiguous in logical time.
Example 10
Embodiment 10 illustrates a schematic diagram of the operation of a timer according to an embodiment of the present application, as shown in fig. 10.
Initializing a timer at step S1001; in step S1002, the timer is updated in the next first time interval; in step S1003, it is determined whether the timer has expired, and if yes, the process ends, and if no, the process returns to step S1002.
As one embodiment, the timer is the first timer.
As an embodiment, the timer is the second timer.
As an embodiment, when the timer is in the running state, the timer is updated at each of the first time intervals.
As an embodiment, when the timer is in a stop state, the updating of the timer at each of the first time intervals is stopped.
As an embodiment, the first time interval is 1 millisecond.
As one embodiment, the first time interval is one subframe (subframe).
For one embodiment, the first time interval is one slot (slot).
As an embodiment, the first time interval is shown as a sidelink timeslot.
As one embodiment, the timer is configured with an expiration value.
As an embodiment, the expiration value of the timer and the first time interval use the same unit of measure.
As one embodiment, initializing the timer sets the value of the timer to 0, the phrase update timer comprising: adding 1 to the value of the timer; when the value of the timer is the expiration value of the timer, the timer expires.
As one embodiment, initializing the timer sets a value of the timer to the expiration value of the timer, the phrase updating the timer comprising: subtracting 1 from the value of the timer; when the value of the timer is 0, the timer expires.
As one example, the timer expires before stopping the timer.
Example 11
Embodiment 11 illustrates a block diagram of a processing apparatus in a first node according to an embodiment of the present application, as shown in fig. 11. In fig. 11, a first node processing apparatus 1100 includes a first receiver 1101. The first receiver 1101 includes at least one of a transmitter/receiver 454 (including antenna 452), a receive processor 456, a multiple antenna receive processor 458, and a controller/processor 459 of fig. 4 of the present application.
In embodiment 11, the first receiver 1101, monitors the target signaling for the active time; receiving a first signaling, wherein the first signaling comprises a first domain, and the first signaling indicates a target time-frequency resource block; maintaining a first timer in accordance with the first domain of at least the first signaling; wherein the state of the first timer is maintained when the value of the first domain of the first signaling is one of a first set of candidate values; initializing or keeping unchanged a state of the first timer when the value of the first domain of the first signaling is one of a second set of candidate values; the active time includes a time when the first timer is in a running state.
As an example, the first receiver 1101 maintains the first timer according to whether the first wireless signal is a new transmission; wherein the first wireless signal is scheduled by the first signaling.
As an embodiment, a first set of messages is received by a sender of the first signaling before sending the first signaling, the first set of messages indicating a first time-frequency resource pool, the first time-frequency resource pool comprising at least one time-frequency resource block; when the target time-frequency resource block belongs to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the first candidate value set; when the target time-frequency resource block does not belong to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the second candidate value sets.
As an embodiment, a first set of messages is received by a sender of the first signaling before sending the first signaling, the first set of messages indicating a first time-frequency resource pool, the first time-frequency resource pool comprising at least one time-frequency resource block; when the target time-frequency resource block belongs to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the first candidate value set; when the target time-frequency resource block does not belong to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the second candidate value sets; the first set of messages is used to indicate configuration authorization.
As an embodiment, a second message is received by the sender of the first signaling after sending the first signaling, the second message being used for determining time domain resources of a last time-frequency resource block comprised in the first time-frequency resource pool.
For one embodiment, the first node is configured for discontinuous reception.
As an embodiment, the first timer is maintained according to the first domain of at least the first signaling only when the first signaling indicates at least one non-broadcast transmission.
Example 12
Embodiment 12 is a block diagram illustrating a processing apparatus in a second node according to an embodiment of the present application, as shown in fig. 12. In fig. 12, the second node processing apparatus 1200 includes a second receiver 1201 and a second transmitter 1202. The second receiver 1201 includes at least one of the transmitter/receiver 418 (including the antenna 420), the receive processor 470, the multi-antenna receive processor 472, and the controller/processor 475 of fig. 4 herein; the second transmitter 1202 includes at least one of the transmitter/receiver 418 (including the antenna 420), the transmit processor 416, the multi-antenna transmit processor 471 and the controller/processor 475 of fig. 4 of the present application.
In embodiment 12, a second transmitter 1202, for transmitting a first signaling, where the first signaling includes a first domain, and the first signaling indicates a target time-frequency resource block; wherein target signaling is monitored by a recipient of the first signaling at an active time; a first timer is maintained by the recipient of the first signaling according to at least the first domain of the first signaling; the state of the first timer remains unchanged when the value of the first domain of the first signaling is one of a first set of candidate values; when the value of the first domain of the first signaling is one of a second set of candidate values, the first timer is initialized or a state of the first timer remains unchanged; the active time includes a time when the first timer is in a running state.
For one embodiment, the first timer is maintained according to whether the first wireless signal is a new transmission; wherein the first wireless signal is scheduled by the first signaling.
As an embodiment, the second receiver 1201 receives a first set of messages, the first set of messages indicating a first time-frequency resource pool, the first time-frequency resource pool comprising at least one time-frequency resource block; wherein the value of the first domain of the first signaling is one of the first set of candidate values when the target time-frequency resource block belongs to the first time-frequency resource pool; when the target time-frequency resource block does not belong to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the second candidate value sets; the receiving time of the first set of messages is earlier than the sending time of the first signaling.
As an embodiment, the second receiver 1201, receives a first set of messages, the first set of messages indicating a first time-frequency resource pool, the first time-frequency resource pool comprising at least one time-frequency resource block; wherein the value of the first domain of the first signaling is one of the first set of candidate values when the target time-frequency resource block belongs to the first time-frequency resource pool; when the target time-frequency resource block does not belong to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the second candidate value sets; the receiving time of the first message set is earlier than the sending time of the first signaling; the first set of messages is used to indicate configuration authorization.
As an embodiment, the second receiver 1201, receives a first set of messages, the first set of messages indicating a first time-frequency resource pool, the first time-frequency resource pool comprising at least one time-frequency resource block; the second transmitter 1202, configured to send a first signaling, where the first signaling includes a first domain, and the first signaling indicates a target time-frequency resource block; wherein, when the target time-frequency resource block belongs to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the first candidate value sets; when the target time-frequency resource block does not belong to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the second candidate value sets; wherein a reception time of the first set of messages is earlier than a transmission time of the first signaling.
For an embodiment, the second receiver 1201 receives a second message, where the second message is used to determine a time domain resource of a last time frequency resource block included in the first time frequency resource pool; wherein a reception time of the second message is later than the transmission time of the first signaling.
As an embodiment, a receiver of the first signaling is configured for discontinuous reception.
As an embodiment, the first timer is maintained in accordance with the first domain of at least the first signaling only if the first signaling indicates at least one non-broadcast transmission.
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 foregoing embodiments may be implemented in the form of hardware, or may be implemented in the form of software functional modules, and the present application is not limited to any specific combination of software and hardware. The first Type of Communication node or UE or terminal in the present application includes, but is not limited to, a mobile phone, a tablet computer, a notebook, a network card, a low power consumption device, an eMTC (enhanced Machine Type Communication) device, an NB-IoT device, a vehicle-mounted Communication device, an aircraft, an airplane, an unmanned aerial vehicle, a remote control airplane, and other wireless Communication devices. The second type of communication node, base station or network side device in this application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a Transmission and Reception node TRP (Transmission and Reception Point), a relay satellite, a satellite base station, an air base station, and other wireless communication devices.
It will be appreciated by those skilled in the art that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The presently disclosed embodiments are therefore considered in all respects to be illustrative and not restrictive. The scope of the invention is indicated by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalents thereof are intended to be embraced therein.

Claims (10)

1. A first node configured for wireless communication, comprising:
a first receiver monitoring a target signaling at an active time; receiving a first signaling, wherein the first signaling comprises a first domain, and the first signaling indicates a target time-frequency resource block; maintaining a first timer in accordance with the first domain of at least the first signaling;
wherein the state of the first timer is maintained when the value of the first domain of the first signaling is one of a first set of candidate values; initializing or keeping unchanged a state of the first timer when the value of the first domain of the first signaling is one of a second set of candidate values; the active time includes a time when the first timer is in a running state.
2. The first node of claim 1, comprising:
the first receiver maintains the first timer according to whether the first wireless signal is a new transmission;
wherein the first wireless signal is scheduled by the first signaling.
3. The first node according to claim 1 or 2, characterized in that a first set of messages is received by a sender of the first signaling before sending the first signaling, the first set of messages indicating a first time-frequency resource pool, the first time-frequency resource pool comprising at least one time-frequency resource block; when the target time-frequency resource block belongs to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the first candidate value sets; when the target time-frequency resource block does not belong to the first time-frequency resource pool, the value of the first domain of the first signaling is one of the second candidate value sets.
4. The first node of claim 3, wherein the first set of messages is used to indicate configuration authorization.
5. The first node according to any of claims 1-4, wherein a second message is received by the sender of the first signaling after sending the first signaling, the second message being used for determining time domain resources of a last time-frequency resource block comprised in the first pool of time-frequency resources.
6. The first node according to any of claims 1-5, wherein the first node is configured for discontinuous reception.
7. The first node according to any of claims 1-6, wherein the first timer is maintained according to the first field of at least the first signaling only if the first signaling indicates at least one non-broadcast transmission.
8. A second node configured for wireless communication, comprising:
the second transmitter is used for sending a first signaling, the first signaling comprises a first domain, and the first signaling indicates a target time frequency resource block;
wherein target signaling is monitored by a recipient of the first signaling during an active time; a first timer is maintained by the recipient of the first signaling according to at least the first domain of the first signaling; the state of the first timer remains unchanged when the value of the first domain of the first signaling is one of a first set of candidate values; when the value of the first domain of the first signaling is one of a second set of candidate values, the first timer is initialized or a state of the first timer remains unchanged; the active time includes a time when the first timer is in a running state.
9. A method in a first node used for wireless communication, comprising:
monitoring target signaling during active time;
receiving a first signaling, wherein the first signaling comprises a first domain, and the first signaling indicates a target time-frequency resource block;
maintaining a first timer in accordance with the first domain of at least the first signaling;
wherein the state of the first timer is kept unchanged when the value of the first domain of the first signaling is one of a first set of candidate values; initializing or keeping unchanged a state of the first timer when the value of the first domain of the first signaling is one of a second set of candidate values; the active time includes a time when the first timer is in a running state.
10. A method in a second node used for wireless communication, comprising:
sending a first signaling, wherein the first signaling comprises a first domain, and the first signaling indicates a target time frequency resource block;
wherein target signaling is monitored by a recipient of the first signaling at an active time; a first timer is maintained by the recipient of the first signaling according to at least the first domain of the first signaling; when the value of the first domain of the first signaling is one of a first set of candidate values, the state of the first timer remains unchanged; when the value of the first domain of the first signaling is one of a second set of candidate values, the first timer is initialized or a state of the first timer remains unchanged; the active time includes a time when the first timer is in a running state.
CN202110754969.8A 2021-07-04 2021-07-04 Method and device for wireless communication of sidelink Pending CN115633415A (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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