CN116113040A

CN116113040A - Method and apparatus for use in wireless communication

Info

Publication number: CN116113040A
Application number: CN202111312266.6A
Authority: CN
Inventors: 张锦芳; 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2023-05-12

Abstract

A method and apparatus for use in wireless communications is disclosed. A first node transmits a first signal and a second signal, the first signal being associated with a first SSB, the first signal comprising a random access preamble; the second signal includes a first message indicating that at least one condition of a first set of conditions is satisfied; transmitting the fourth set of signals through the first transmission mode; receiving a third signal in response to transmitting the second signal, the third signal comprising a second message indicating the first transmission mode; wherein the first set of conditions includes at least that the received power of all SSBs in the first set of SSBs is less than a first threshold; the first transmission mode is one of a dynamically scheduled transmission mode or a configuration grant transmission mode; the fourth set of signals includes at least one signal; the first set of SSBs includes at least one SSB. The present application effectively supports configuration grant based small data transmission.

Description

Method and apparatus for use in wireless communication

Technical Field

The present application relates to a method and apparatus used in a wireless communication system, and more particularly, to a method and apparatus for supporting small data transmission by configuration grant in wireless communication.

Background

Future wireless communication systems have more and more diversified application scenes, and different application scenes have different performance requirements on the system. To meet the different performance requirements of various application scenarios, a New air interface technology (NR) is decided to be researched in the 3GPP (3 rd Generation Partner Project, third Generation partnership project) RAN (Radio Access Network ) #72 times of the whole meeting, and standardized Work is started on NR by the 3GPP RAN #75 times of the whole meeting through the WI (Work Item) of NR.

One of the key technologies of NR is to support beam-based signal transmission, and its main application scenario is to enhance the coverage performance of NR devices operating in the millimeter wave band (e.g., a band greater than 6 GHz). In addition, beam-based transmission techniques are also required to support large-scale antennas in low frequency bands (e.g., frequency bands less than 6 GHz). By weighting the antenna array, the rf signal forms a stronger beam in a particular spatial direction, while the signal is weaker in other directions. After the operations of beam measurement, beam feedback and the like, the beams of the transmitter and the receiver can be accurately aligned with each other, so that signals are sent and received with stronger power, and the coverage performance is improved. Beam management and control of an NR system operating in the millimeter wave band may be achieved for multiple simultaneous broadcast signal blocks (SSBs) and channel state information reference signals (Channel State Information Reference Signal, CSI-RS) measurements and feedback. Different SSBs or CSI-RS may be transmitted by using different beams, where the transmission beams of SSBs with the same index are the same, and a User Equipment (UE) measures SSBs or CSI-RS sent by a gNB (next generation node B ) and feeds back an SSB index or CSI-RS resource index to complete beam alignment. In the random access procedure, the index of the SSB is associated with the physical resource of the PRACH (Physical RandomAccess CHannel ), the UE determines the PRACH resource according to the index of the selected SSB, and since the gNB and the UE have completed beam alignment on the SSB, the beams at the transmitting and receiving ends when transmitting the random access preamble are also aligned.

Dynamic scheduling (Dynamic Scheduling) is a common method in cellular communication, where a base station allocates transmission resources for each downlink or uplink transmission, and a UE receives a scheduling signaling first, and then receives downlink data or transmits uplink data on the transmission resources indicated by the scheduling signaling. For regular transmission of a traffic pattern (traffic pattern), a transmission resource allocation pattern based on Configuration Grant (CG) may be adopted, that is, by allocating transmission resources in advance, the base station makes the UE not need to receive the scheduling signaling first during each transmission, so that the scheduling signaling may be effectively reduced, and the radio resource utilization rate may be improved. For downlink transmission, configuration grants are also referred to as semi-static scheduling; for uplink transmission, the configuration grant includes a configuration grant Type 1 (Type 1) and a configuration grant Type 2 (Type 2).

The NR supports an RRC (Radio Resource Control ) Inactive (rrc_inactive) state, and UEs with sparse (including periodic and aperiodic) data transmission requirements are typically configured by the network to camp on the RRC Inactive state when there is no data transmission. When the UE has a data transmission requirement, the UE performs data transmission after entering an RRC connection (rrc_connected) state from an RRC inactive state, and reenters the RRC inactive state after the data transmission is completed. Until Rel-16,3GPP does not support data transmission in the RRC inactive state, signaling overhead of RRC state transition is greater than transmission overhead of small data for small data transmission, and power consumption overhead of UE is increased. Therefore, the decision to initiate WI standardization work for small data transmissions in RRC inactive state is made at 3gpp ran#88 e.

Disclosure of Invention

The inventor finds through research that in the RRC inactive state, the UE can be configured to perform uplink small data transmission through configuration grant, and when data arrives, it needs to be authenticated first whether uplink transmission can be performed with pre-allocated transmission resources. When uplink is out of step, or uplink has no available transmission resource, or pre-allocated transmission resources are invalid, the UE cannot utilize the pre-allocated transmission resources to perform uplink transmission, and if the UE does not indicate to the base station, the UE cannot complete subsequent uplink small data transmission; if the UE resumes transmission after entering the RRC connection state, the uplink small data transmission delay is increased, and the signaling overhead is increased.

The application discloses a solution for UE to execute uplink small data transmission by configuration grant in RRC inactive state, when UE can not utilize pre-allocated transmission resources to execute uplink transmission, the UE indicates to a base station, so as to be used for the base station to indicate how the UE executes subsequent data transmission. Although the present application is initially directed to the Uu air interface, the present application can also be used for the PC5 air interface. Furthermore, the adoption of a unified solution for different scenarios, including but not limited to upstream communication scenarios, also helps to reduce hardware complexity and cost. Embodiments in the first node and features in embodiments of the present application may be applied to any other node and vice versa without conflict. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict. In particular, the term (Terminology), noun, function, variable in this application may be interpreted (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 used in a first node of wireless communication, comprising the following steps:

transmitting a first signal, the first signal being associated with a first SSB, the first signal comprising a random access preamble;

transmitting a second signal, the second signal comprising a first message indicating that at least one condition of a first set of conditions is met;

receiving a third signal in response to transmitting the second signal, the third signal comprising a second message indicating the first transmission mode;

transmitting the fourth set of signals through the first transmission mode;

wherein the first set of conditions includes at least that the received power of all SSBs in the first set of SSBs is less than a first threshold; the first transmission mode is one of a dynamically scheduled transmission mode or a configuration grant transmission mode; the fourth set of signals includes at least one signal; the first set of SSBs includes at least one SSB.

As an embodiment, the present application is applicable to Uu air interfaces.

As an embodiment, the present application is applicable to the first node being in an RRC inactive state.

As an embodiment, the present application is applicable to a scenario in which uplink small data transmission is performed on transmission resources allocated by configuration grant.

As an embodiment, the application is applicable to the transmission of small data after the first node receives the feedback of the base station for the small data transmission request.

As an embodiment, the present application is applicable to subsequent small data transmissions during CG-SDT (Configured Grant-Small Data Transmission, configuration Grant-small data transmissions).

As an embodiment, the present application is applicable to a subsequent CG (Configured Grant) transfer phase (subsequentcgfransmisionnphase) in the CG-SDT process.

As an embodiment, the subsequent CG is not used for transmitting CCCH (Common Control CHannel ).

As one embodiment, the configuration grant is a configuration grant type 1.

As one embodiment, the configuration grant provides an Uplink grant (Uplink grant) through RRC signaling.

As one embodiment, the configuration grant type 1 is stored as a configuration uplink grant at the first node (configured uplink grant).

As an embodiment, the present application is applicable to transmissions within one serving cell (serving cell).

As one embodiment, the problem to be solved by the present application is: in an RRC inactive state, the first node performs uplink small data transmission on the transmission resources allocated by the configuration grant, and when the first node cannot perform uplink transmission by utilizing the pre-allocated transmission resources, if the first node does not indicate to the base station, the subsequent uplink small data transmission cannot be completed; if the first node continues to transmit after entering the RRC connection state, a large amount of signaling overhead will be increased, reducing transmission efficiency, and increasing transmission delay.

As one embodiment, the solution of the present application comprises: if at least one condition in the first condition set is satisfied, the first node indicates to a base station that the at least one condition in the first condition set is satisfied through a random access procedure, and the base station indicates to the first node a first transmission mode for the first node to transmit the fourth signal set through the first transmission mode.

As an embodiment, the first condition set includes a condition that the first node needs to meet to perform uplink small data transmission on the transmission resource allocated by the configuration grant in the RRC inactive state.

As an embodiment, the first node performs uplink small data transmission on the transmission resources allocated by the configuration grant in the RRC inactive state only when all conditions in the first set of conditions are satisfied.

As an embodiment, the method can quickly recover the subsequent uplink small data transmission.

As an embodiment, the method can reduce signaling overhead and improve transmission efficiency.

According to one aspect of the present application, there is provided:

the second message indicates the first transmission mode only when the first message indicates that the received power of all SSBs in the first set of SSBs is less than the first threshold.

According to one aspect of the present application, there is provided:

receiving a third message, the third message indicating the first set of SSBs; the third message indicates a second set of time-frequency resources; the third message is used to instruct the first node to enter an RRC inactive state;

wherein the second set of time-frequency resources is reserved for the configuration grant transmission.

As an embodiment, the serving base station of the first node instructs the first node to enter the RRC inactive state by sending the third message, and configures a parameter when the first node performs small data transmission in the RRC inactive state.

According to one aspect of the present application, there is provided:

the second message indicates a first set of time-frequency resources used to transmit the fourth set of signals, the first set of time-frequency resources including at least one time-frequency resource;

wherein, the first sending mode is the sending mode of the configuration grant; any one of the first time-frequency resources belongs to the second time-frequency resource set; the first SSB does not belong to the first SSB set.

According to one aspect of the present application, there is provided:

Monitoring a first signaling in a first time window, the first signaling being used to indicate a time-frequency resource for transmitting one signal of the fourth set of signals;

the first sending mode is the dynamically scheduled sending mode; the second message indicates the first time window, the first time window being located between any two adjacent time domain resources in the time domain resource set of the second set of time-frequency resources after the time of receipt of the third signal.

According to one aspect of the present application, there is provided:

the first message includes at least one MAC CE.

According to one aspect of the present application, there is provided:

transmitting the fourth set of signals while the first node is in the RRC inactive state; wherein the fourth set of signals is associated with the first SSB.

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

a first transmitter that transmits a first signal and a second signal, the first signal being associated with a first SSB, the first signal comprising a random access preamble; the second signal includes a first message indicating that at least one condition of a first set of conditions is satisfied; transmitting the fourth set of signals through the first transmission mode;

A first receiver that receives a third signal in response to transmitting the second signal, the third signal including a second message indicating the first transmission mode;

The application discloses a method used in a second node of wireless communication, comprising the following steps:

receiving a first signal, the first signal being associated with a first SSB, the first signal comprising a random access preamble;

receiving a second signal, the second signal comprising a first message indicating that at least one condition of a first set of conditions is met;

transmitting a third signal in response to receiving the second signal, the third signal comprising a second message indicating a first transmission mode;

receiving a fourth set of signals;

wherein the fourth set of signals is transmitted via the first transmission mode; the first set of conditions includes at least that the received power of all SSBs in the first set of SSBs is less than a first threshold; the first transmission mode is one of a dynamically scheduled transmission mode or a configuration grant transmission mode; the fourth set of signals includes at least one signal; the first set of SSBs includes at least one SSB.

According to one aspect of the present application, there is provided:

transmitting a third message, the third message indicating the first SSB set; the third message indicates a second set of time-frequency resources; the third message is used to instruct the sender of the first signal to enter an RRC inactive state;

According to one aspect of the present application, there is provided:

transmitting first signaling in a first time window, the first signaling being used to indicate a time-frequency resource for transmitting one signal of the fourth set of signals;

The first sending mode is the dynamically scheduled sending mode; the second message indicates the first time window, the first time window being located between any two adjacent time domain resources in the time domain resource set of the second time-frequency resource set after the transmission time of the third signal.

According to one aspect of the present application, there is provided:

the first message includes at least one MAC CE.

According to one aspect of the present application, there is provided:

the sender of the first signal is in the RRC inactive state when receiving the fourth set of signals;

wherein the fourth set of signals is associated with the first SSB.

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

a second receiver for receiving a first signal and a second signal, the first signal being associated with a first SSB, the first signal comprising a random access preamble; the second signal includes a first message indicating that at least one condition of a first set of conditions is satisfied; receiving a fourth set of signals;

a second transmitter that, in response to receiving the second signal, transmits a third signal, the third signal comprising a second message indicating a first transmission mode;

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:

fig. 1 illustrates a transmission flow diagram of a first node according to one embodiment of the present application;

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

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

FIG. 4 illustrates a hardware module schematic 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 schematic diagram of a time domain resource set of a second set of time-frequency resources versus a time domain resource set of a first set of time-frequency resources according to one embodiment of the present application;

FIG. 7 illustrates a schematic diagram of a first message according to one embodiment of the present application;

FIG. 8 illustrates a schematic diagram of a second message according to one embodiment of the present application;

FIG. 9 illustrates a schematic diagram of a relationship of a first time window to a set of time domain resources of a second set of time frequency resources according to one embodiment of the present application;

fig. 10 illustrates a schematic diagram of a first SSB and multiple antenna parameters 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 arrangement in a second node according to an embodiment of the present application.

Detailed Description

The technical solution of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be arbitrarily combined with each other.

Example 1

Embodiment 1 illustrates a transmission flow diagram of a first node according to one embodiment of the present application, as shown in fig. 1.

In embodiment 1, the first node 100 sends in step 101 a first signal, said first signal being associated with a first SSB, said first signal comprising one random access preamble; transmitting a second signal in step 102, the second signal comprising a first message indicating that at least one condition of a first set of conditions is met; receiving a third signal in response to transmitting the second signal in step 103, the third signal comprising a second message indicating a first transmission mode; transmitting a fourth set of signals over the first transmission mode in step 104; wherein the first set of conditions includes at least that the received power of all SSBs in the first set of SSBs is less than a first threshold; the first transmission mode is one of a dynamically scheduled transmission mode or a configuration grant transmission mode; the fourth set of signals includes at least one signal; the first set of SSBs includes at least one SSB.

As an embodiment, the first signal is transmitted over an air interface.

As an embodiment, any one of the first set of conditions is fulfilled for triggering a random access procedure to which the first signal belongs.

As an embodiment, the first signal, the second signal and the third signal belong to the same random access procedure.

As an embodiment, the first signal is via PRACH.

As an embodiment, the first signal is an uplink signal.

As an embodiment, the first signal comprises a random access preamble (preamble).

As an embodiment, a random access preamble is a signature sequence.

As an embodiment, one feature sequence is a pseudo-random sequence.

As an example, one feature sequence is a Gold sequence.

As one example, one feature sequence is an M sequence.

As an embodiment, one feature sequence is a ZC sequence.

As an embodiment, the first signal is associated with a first SSB.

As an embodiment, the phrase the first signal and first SSB association includes: the index of the first SSB is used to determine the PRACH occasion (occalation) occupied by the first signal.

As an embodiment, one PRACH occasion includes time domain resources and frequency domain resources for transmitting one random access preamble.

As an embodiment, the first node is configured by the network to associate each PRACH occasion with N SSB indexes.

As an embodiment, the first node configures, by the network, each SSB index each valid PRACH occasion and R random access preamble associations.

As an example, when N<1, one SSB index is mapped to 1/N consecutive valid PRACH occasions and R contention-based random access preambles with consecutive indexes associated with the SSB index of each valid PRACH occasion and starting from the random access preamble index 0; when N is equal to or greater than 1, R contention-based random access preambles with consecutive indexes associated with SSB index N of each valid PRACH occasion are indexed from the random access preambles

Starting, wherein said N satisfies 0.ltoreq.n.ltoreq.N-1, said +.>

Is the total random access front derivative, and is configured by the network.

As an embodiment, the first node determines a PRACH occasion to send the first signal according to the index of the first SSB; when R is greater than 1, the first signal includes a random access preamble randomly selected by the first node from the R random access preambles.

As one embodiment, the N is a number greater than 0.

As an embodiment, R is a positive integer not less than 1.

As an embodiment, the phrase the first signal and first SSB association includes: the multi-antenna transmission parameters of the first signal are the same as the multi-antenna transmission parameters of the first SSB.

As an embodiment, the phrase the first signal and first SSB association includes: the multi-antenna transmission parameters of the first SSB can be used to infer the multi-antenna transmission parameters of the first signal.

As an embodiment, the phrase the first signal and first SSB association includes: the reception of the first SSB is used to determine a multi-antenna transmission parameter of the first signal.

As an embodiment, the phrase the first signal and first SSB association includes: the multi-antenna reception parameters of the first SSB are used to determine multi-antenna transmission parameters of the first signal.

As an embodiment, K multiple antenna reception parameters are used for reception of the first SSB, respectively, where the multiple antenna reception parameter of the first SSB is one multiple antenna reception parameter of the K multiple antenna reception parameters corresponding to the best reception power of the first SSB.

As an embodiment, K multiple antenna reception parameters are used for reception of the first SSB, respectively, where the multiple antenna reception parameter of the first SSB is one of the K multiple antenna reception parameters, where the reception power of the corresponding first SSB is greater than a second threshold.

As an embodiment, the multi-antenna reception parameters comprise a spatial domain filter (spatial domain filter).

As an embodiment, the multi-antenna transmission parameters comprise a spatial domain filter (spatial domain filter).

As an embodiment, the multi-antenna reception parameter includes a Spatial correlation (Spatial correlation) parameter.

As an embodiment, the multi-antenna transmission parameter includes a Spatial correlation (Spatial correlation) parameter.

As an embodiment, the multi-antenna reception parameter includes a QCL (Quasi-location) parameter.

As an embodiment, the multi-antenna transmission parameter includes a QCL parameter.

As one embodiment, the QCL parameters include QCL type.

As an embodiment, the multi-antenna reception parameter includes a spatial reception parameter, and the multi-antenna transmission parameter includes a spatial transmission parameter.

As an embodiment, the multi-antenna reception parameter comprises a spatial domain reception filter and the multi-antenna transmission parameter comprises a spatial domain transmission filter.

As one embodiment, the first SSB is one of K SSBs; the K SSBs are transmitted via K radio signals, which are transmitted in K time units that are orthogonal to each other (i.e., do not overlap).

As one embodiment, each SSB of the K SSBs is identified by an SSB index.

As an embodiment, each SSB of the K SSBs corresponds to a multi-antenna transmission parameter.

As an embodiment, the first SSB is selected by the first node itself.

As an embodiment, the first node randomly selects, as the first SSB, an SSB having a received power greater than the second threshold from the K SSBs.

As an embodiment, the second threshold is configured by the second node.

As an embodiment, the second threshold is used for SSB selection in a random access procedure.

As one embodiment, any one SSB of the K SSBs is used to determine timing information including at least one of a symbol index, a slot index, a subframe index, and a frame index.

As one embodiment, any one of the K SSBs is used for channel quality measurement.

As one embodiment, any one of the K SSBs is used for neighbor cell channel quality measurement.

As one embodiment, any one of the K SSBs is used for current cell channel quality measurement.

As one embodiment, any one of the K SSBs is used for beam quality measurement.

As one embodiment, any one of the K SSBs is used for interference strength measurement.

As one embodiment, any one of the K SSBs is used to acquire frequency synchronization.

As an embodiment, any one SSB of the K SSBs is used to obtain a cell physical identity.

As one embodiment, any one SSB of the K SSBs is used to acquire cell broadcast information.

As one embodiment, any one of the K SSBs includes a physical shared channel.

As one embodiment, any one of the K SSBs includes a physical broadcast channel.

As an embodiment, any one SSB of the K SSBs includes a demodulation reference signal.

As an embodiment, any one of the K SSBs includes a PSS (Primary Synchronization Signal ).

As an embodiment, any one of the K SSBs includes SSS (Secondary Synchronization Signal ).

As an embodiment, any one of the K SSBs includes a PBCH (Physical BroadcastChannel ).

As one embodiment, any one of the K SSBs is used to send MIB (Master Information Block, master system message block).

As one embodiment, any one of the K SSBs is used to send a SIB (System Information Block, system message block).

As an embodiment, the time domain resources occupied by any two SSBs of the K SSBs are orthogonal; wherein K is a positive integer not less than 2.

As an embodiment, the multiple antenna transmission parameters of any two SSBs of the K SSBs are different; wherein K is a positive integer not less than 2.

As one embodiment, any two SSB QCLs of the K SSBs are unassociated; wherein K is a positive integer not less than 2.

As an embodiment, K is a positive integer not less than 2.

For a specific definition of QCL, see section 5.1.5 in 3gpp ts38.214, as an example.

As an embodiment, the one signal and the other signal QCL are not associated comprising: all or part of the large-scale (large-scale) characteristics of the wireless signal transmitted on the antenna port corresponding to one signal cannot be inferred from all or part of the large-scale (large-scale) characteristics of the wireless signal transmitted on the antenna port corresponding to the other signal.

As one embodiment, the large scale characteristic of a wireless signal includes at least one of { delay spread (delay spread), doppler spread (Doppler spread), doppler shift (Doppler shift), path loss (path loss), average gain (average gain), average delay (average delay), spatial reception parameter (Spatial Rxparameters) }.

As an embodiment, the spatial reception parameters (Spatial Rxparameters) include at least one of { reception beams, reception analog beamforming matrices, reception analog beamforming vectors, reception spatial filtering (spatial filter), spatial reception filtering (spatial domain reception filter) }.

As an embodiment, the fact that one signal is not associated with another signal QCL means that: the value of any QCL parameter of one signal is different from the value of the same QCL parameter of another signal.

As one embodiment, the QCL parameters include: at least one of { delay spread (delay spread), doppler spread (Doppler shift), doppler shift (Doppler shift), path loss (path loss), average gain (average gain), average delay (average delay), spatial reception parameter (Spatial Rxparameters) }.

As one embodiment, a signal and another signal not QCL associated means: the value of one QCL parameter of one signal cannot be inferred from the value of the same QCL parameter of another signal.

As an embodiment, the second signal is transmitted over an air interface.

As an embodiment, the second signal is an uplink signal.

As an embodiment, the second signal is associated with the first SSB.

As an embodiment, the second signal is transmitted through PUSCH (Physical Uplink Shared CHannel ).

As an embodiment, the second signal comprises Msg3 (message 3) in a 4-step random access (4-step random access) procedure.

As an embodiment, the second signal comprises MsgA (message a) in a 2-step random access (2-step randomaccess) procedure.

As an embodiment, the second signal comprises a first message.

As an embodiment, the first message is a higher layer message.

As an embodiment, the first message is an RRC message.

As an embodiment, the first message is a MAC (MediumAccess Control ) sublayer message.

As an embodiment, the first message indicates that at least one condition of the first set of conditions is met.

As an embodiment, the first message indicates an event (event) triggering a random access procedure.

As an embodiment, an event is defined as one condition of the first set of conditions being met.

As an embodiment, the first set of conditions includes at least one condition.

As an embodiment, the first condition set includes invalid (invalid) TA (timing advance).

As an embodiment, the first set of conditions includes triggering SR (Scheduling Request ) due to UL (Uplink) resource starvation.

This is an embodiment, the first set of conditions comprises an upstream out-of-sync.

As an embodiment, the first set of conditions includes requesting other SIs (System Information ).

As an embodiment, the first set of conditions includes a scheduling request (SchedulingRequest, SR) failure.

As one embodiment, the first set of conditions includes a transition from an RRC inactive state.

As an embodiment, the first set of conditions includes at least that the received power of all SSBs in the first set of SSBs is less than a first threshold.

As an embodiment, the first set of conditions includes at least that the received power of all SSBs in the first set of SSBs is not greater than a first threshold.

As one embodiment, the phrase that the received power of all SSBs in the first set of SSBs is less than a first threshold comprises: no qualified (purified) SSB is found when performing SSB evaluation (evaluation) for all SSBs in the first set of SSBs.

As one embodiment, the phrase that the received power of all SSBs in the first set of SSBs is not greater than a first threshold comprises: no eligible SSBs are found when performing SSB evaluations for all SSBs in the first set of SSBs.

As one embodiment, SSB evaluation is performed for all SSBs in the first set of SSBs before performing uplink transmission based on a configuration uplink grant included in the third message.

As an embodiment, when one uplink grant received by the MAC sublayer of the first node is a configuration uplink grant included in the third message, SSB evaluation is performed for all SSBs in the first SSB set.

As an embodiment, the received power of one SSB refers to: SS (synchronization signals, synchronization signal) reference signal received power of one SSB.

As an embodiment, the received power of one SSB refers to: SS-RSRP (Reference Signal ReceivedPower ) of one SSB.

As an embodiment, the received power of one SSB refers to: a linear average (linear average) of the power contributions of the resource elements (resource elements, REs) of the carrier (carry) auxiliary synchronization signal (secondary synchronization signals).

As an embodiment, SS-RSRP is measured only in SSB-corresponding reference signals with the same SSB index and the same physical layer cell identity.

As one example, the received power of one SSB is expressed in watts (W).

As an embodiment, the first threshold is configured by the network.

As an embodiment, the first threshold is configured by the second node.

As an embodiment, the first threshold is expressed in watts (W).

As an embodiment, the second threshold is different from the first threshold.

As an embodiment, the first threshold is not smaller than the second threshold.

As an embodiment, the first threshold is greater than the second threshold.

As one embodiment, the first set of SSBs includes at least one SSB.

As one embodiment, any SSB in the first set of SSBs is one of the K SSBs.

As one embodiment, the first set of SSBs is a subset of the K SSBs.

As an embodiment, a third signal is received in response to transmitting the second signal.

As an embodiment, the third signal is received over an air interface.

As one embodiment, the third signal is received through a PDSCH (Physical Downlink Shared Channel ).

As an embodiment, the third signal is received through a PDCCH (Physical Downlink Control Channel ).

As one embodiment, the third signal is received on a PDCCH scheduled time-frequency resource addressed to a C-RNTI (Cell-Radio Network Temporary Identifier, cell radio network temporary identity) that is used to uniquely identify the first node at its serving Cell.

As an embodiment, the third signal comprises Msg4 (message 4) in a 4-step random access procedure.

As an embodiment, the third signal comprises MsgB (message B) in a 2-step random access procedure.

As an embodiment, the third signal is associated with the first SSB.

As an embodiment, the third signal comprises a second message indicating the first transmission mode.

As an embodiment, the second message includes at least one MAC CE (Control Element).

As an embodiment, the first transmission mode is one of a dynamically scheduled transmission mode or a configuration granted transmission mode.

As an embodiment, the first transmission mode is the dynamically scheduled transmission mode.

As an embodiment, the first transmission mode is a transmission mode of the configuration grant, and the transmission mode of the configuration grant is a configuration grant type 1.

As an embodiment, the fourth set of signals is transmitted over an air interface.

As an embodiment, the fourth set of signals is transmitted through the first transmission mode.

As an embodiment, when the first transmission mode is the dynamically scheduled transmission mode, any signal in the fourth signal set is transmitted on a dynamically scheduled time-frequency resource; and when the first transmission mode is the transmission mode granted by the configuration, any signal in the fourth signal set is transmitted on a pre-configured time-frequency resource.

As an embodiment, a time-frequency resource includes a time-domain resource and a frequency-domain resource.

As an embodiment, one time domain resource includes at least one OFDM (Orthogonal FrequencyDivision Multiplexing ) symbol (symbol).

As an embodiment, one time domain resource includes at least one slot (slot).

As an embodiment, one time domain resource includes at least one subframe (subframe).

As an embodiment, one frequency domain resource includes at least one Resource Element (RE).

As an embodiment, one frequency domain resource includes at least one Resource Block (RB).

As an embodiment, one frequency domain resource includes at least one subchannel (sub-channel).

As an embodiment, the fourth set of signals comprises at least one signal.

As an embodiment, at least one signal of the fourth set of signals comprises at least one MAC SDU (Service Data Unit, traffic data unit); any one of the at least one MAC SDU belongs to a first set of radio bearers (radio bearers).

As an embodiment, the data amount of the MAC SDU included in any signal of the fourth set of signals is not larger than a third threshold.

As an embodiment, the third threshold is configured by the second node.

As an embodiment, the third threshold is used to determine whether to select SDT (Small Data Transmission ) or non (non) SDT to send MAC SDUs belonging to the first set of radio bearers.

As an embodiment, the first set of radio bearers is configured to be sent by way of SDT when in RRC inactive state.

As an embodiment, when the cached data quantity belonging to the first radio bearer set is not greater than the third threshold, selecting a transmission mode of the SDT; and when the cached data quantity belonging to the first radio bearer set is greater than the third threshold value, selecting a non-SDT sending mode.

As an embodiment, the statistical method of the data amount of the buffered belonging to the first radio bearer set is the same as the statistical method of the BSR (Buffer Status Report ) for the first radio bearer set.

As an embodiment, the first radio Bearer set includes a DRB (data radio Bearer).

As an embodiment, the first set of radio bearers includes DRBs (SignalingRadio Bearer, signaling radio bearers).

As one embodiment, the first set of radio bearers includes MRBs (MBMS Pointto MultipointRadio Bearer, multimedia broadcast multicast service point-to-multipoint radio bearers).

As an embodiment, the first receiver receives a second signaling when the received power of any SSB in the first set of SSBs is greater than the first threshold; the second signaling indicates a time-frequency resource, which is used to transmit a fifth signal.

As an embodiment, the first receiver receives a second signaling when the received power of any SSB in the first SSB set is not less than the first threshold; the second signaling indicates a time-frequency resource, which is used to transmit a fifth signal.

As a sub-embodiment of the above two embodiments, the second signaling is PDCCH.

As an embodiment, the fifth signal is transmitted before the fourth set of signals is transmitted.

As an embodiment, the fifth signal comprises at least part of the data buffered at the first node; wherein the first message indicates a data amount of the buffered data; the cached data belongs to the first radio bearer set.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to one embodiment of the present application, as shown in fig. 2. Fig. 2 illustrates a network architecture 200 of NR 5g, LTE (Long-term evolution) and LTE-a (Long-Term EvolutionAdvanced, enhanced Long-term evolution) systems. The NR 5G, LTE or LTE-a network architecture 200 may be referred to as 5GS (5G System)/EPS (EvolvedPacket System ) 200 or some other suitable terminology. The 5GS/EPS 200 may include one or more UEs (User Equipment) 201, ng-RAN (next generation radio access network) 202,5GC (5G CoreNetwork)/EPC (Evolved Packet Core, evolved packet core) 210, hss (Home Subscriber Server )/UDM (Unified Data Management, unified data management) 220, and internet service 230. The 5GS/EPS 200 may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the 5GS/EPS 200 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 gNB203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The XnAP protocol of the Xn interface is used to transmit control plane messages of the wireless network and the user plane protocol of the Xn interface is used to transmit user plane data. The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), TRP (Transmission Reception Point, transmitting receiving node), or some other suitable terminology, and in NTN networks, 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 UE201 include a cellular telephone, 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 game console, an drone, an aircraft, a narrowband internet of things device, a machine-type communications device, a land vehicle, an automobile, an in-vehicle device, an in-vehicle communications unit, a wearable device, or any other similar functional device. Those of skill in the art may also refer to the 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. gNB203 is connected to 5GC/EPC210 through an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity )/AMF (Authentication ManagementField, authentication management domain)/SMF (session management function) 211, other MME/AMF/SMF214, S-GW (Service Gateway)/UPF (User Plane Function), and P-GW (PacketDate Network Gateway, 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 transported through the S-GW/UPF212, which S-GW/UPF212 itself is connected to the P-GW/UPF213. The P-GW provides UE IP address assignment as well as other functions. The P-GW/UPF213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem ), and a PS (Packet Switching) streaming service.

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

As an embodiment, the NR node B corresponds to a second node in the present application.

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

As one example, the gNB203 is a Micro Cell (Micro Cell) base station.

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

As an example, 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 embodiment, the gNB203 is a flying platform device.

As one 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 a downlink.

As one embodiment, the wireless link from the UE201 to the UE241 is a sidelink.

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).

Example 3

Embodiment 3 illustrates a schematic diagram of a wireless protocol architecture of a user plane and a control plane according to one embodiment of the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, fig. 3 shows the radio protocol architecture of the control plane 300 for a UE and a gNB with 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 (MediumAccess Control ) sublayer 302, an RLC (Radio Link Control, radio link layer control protocol) sublayer 303, and a PDCP (Packet Data Convergence Protocol ) sublayer 304, which terminate at the gNB 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 data packets, retransmission of lost data packets by ARQ, and RLC sublayer 303 also provides duplicate data 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 the various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ (HybridAutomatic RepeatRequest ) 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 signaling between the gNB and the UE. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer), the radio protocol architecture in the user plane 350 is substantially the same for the physical layer 351, PDCP sublayer 354 in the L2 layer 355, RLC sublayer 353 in the L2 layer 355, and 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 data packets to reduce radio transmission overhead. Also included in the L2 layer 355 in the user plane 350 is an SDAP (Service DataAdaptationProtocol ) sublayer 356, the SDAP sublayer 356 being responsible for mapping between QoS (Quality ofService ) flows and Data Radio Bearers (DRBs) to support diversity of traffic. The radio protocol architecture of the UE in the user plane 350 may include some or all of the SDAP sublayer 356, pdcp sublayer 354, rlc sublayer 353 and 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., remote UE, server, etc.).

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

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

As an example, the entities of the multiple sub-layers of the control plane in fig. 3 constitute signaling radio bearers (Signaling Radio Bearer, SRB) in the vertical direction.

As an example, the entities of the multiple sub-layers of the user plane in fig. 3 constitute a data radio bearer (Data Radio Bearer, DRB) in the vertical direction.

As an example, the entities of the multiple sub-layers of the user plane in fig. 3 constitute a multimedia broadcast multicast service point-to-multipoint radio bearer (MBMS pointto multipointRadio Bearer, MRB) in the vertical direction.

As an embodiment, the first signal in the present application is generated by the PHY301 and the PHY351.

As an embodiment, the second signal in the present application is generated by the PHY301 and the PHY351.

As an embodiment, the first message in the present application is generated by the MAC302 and the MAC352.

As an embodiment, the third signal in the present application is generated by the PHY301 and the PHY351.

As an embodiment, the second message in the present application is generated by the MAC302 and the MAC352.

As an embodiment, the fourth signal set in the present application is generated by the PHY301 and the PHY351.

As an embodiment, the first signaling in the present application is generated in the PHY301 and the PHY351.

As an embodiment, the second signaling in the present application is generated in the PHY301 and the PHY351.

As an embodiment, the third message in the present application is generated in the RRC306.

As an embodiment, the fifth signal in the present application is generated by the PHY301 and the PHY351.

As an embodiment, the L2 layer 305 belongs to a higher layer.

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

Example 4

Embodiment 4 illustrates a hardware module schematic of a communication device according to an embodiment of the present application, as shown in fig. 4. Fig. 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

The first communication device 450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.

The second communication device 410 includes a controller/processor 475, a memory 476, a data source 477, a receive processor 470, a transmit processor 416, a multi-antenna receive processor 472, a multi-antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.

In the transmission from the second communication device 410 to the first communication device 450, upper layer packets from the core network or upper layer packets from the data source 477 are provided to the controller/processor 475 at the second communication device 410. The core network and data source 477 represent all protocol layers above the L2 layer. The controller/processor 475 implements the functionality of the L2 layer. In the transmission from the second communication device 410 to the first communication device 450, a controller/processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication 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., physical layer). Transmit processor 416 performs coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 410, as well as mapping of signal clusters 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 digitally space-precodes the coded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, to generate one or more spatial streams. A transmit processor 416 then maps each spatial stream to a subcarrier, 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 a physical channel carrying the time domain multicarrier symbol stream. 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 multiple antenna transmit processor 471 to a radio frequency stream and then provides it to a different antenna 420.

In a transmission from the second communication device 410 to the first communication device 450, each receiver 454 receives a signal at the first communication device 450 through its respective antenna 452. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream that is provided to a receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various signal processing functions for the L1 layer. A multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. The receive processor 456 converts the baseband multicarrier symbol stream after receiving the analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receive processor 456, wherein the reference signal is to be used for channel estimation, and the data signal is subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in a receive processor 456 and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals that were transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the 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 the transmission from the second communication device 410 to the first communication device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the second communication device 410. The upper layer packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In the transmission from the first communication device 450 to the second communication device 410, an upper layer data packet is provided to a controller/processor 459 at the first communication device 450 using a data source 467. Data source 467 represents all protocol layers above the L2 layer. Similar to the transmit functions at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 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 and control planes. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to the second communication 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, with the multi-antenna transmit processor 457 performing digital multi-antenna spatial precoding, after which the transmit processor 468 modulates the resulting spatial stream into a multi-carrier/single-carrier symbol stream, which is analog precoded/beamformed in the multi-antenna transmit processor 457 before being provided to the different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and provides it to an antenna 452.

In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the receiving function 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 radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals to baseband signals, and provides the baseband signals to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement the functions of the L1 layer. The controller/processor 475 implements L2 layer functions. The controller/processor 475 may be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In the 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, decryption, header decompression, control signal processing to recover upper layer data packets from the first communication device 450. Upper layer 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 are configured to, with the at least one processor, cause the apparatus of the first communication device 450 to at least: transmitting a first signal and a second signal, the first signal being associated with a first SSB, the first signal comprising a random access preamble; the second signal includes a first message indicating that at least one condition of a first set of conditions is satisfied; transmitting the fourth set of signals through the first transmission mode; receiving a third signal in response to transmitting the second signal, the third signal comprising a second message indicating the first transmission mode; wherein the first set of conditions includes at least that the received power of all SSBs in the first set of SSBs is less than a first threshold; the first transmission mode is one of a dynamically scheduled transmission mode or a configuration grant transmission mode; the fourth set of signals includes at least one signal; the first set of SSBs includes at least one SSB.

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, produce acts comprising: transmitting a first signal and a second signal, the first signal being associated with a first SSB, the first signal comprising a random access preamble; the second signal includes a first message indicating that at least one condition of a first set of conditions is satisfied; transmitting the fourth set of signals through the first transmission mode; receiving a third signal in response to transmitting the second signal, the third signal comprising a second message indicating the first transmission mode; wherein the first set of conditions includes at least that the received power of all SSBs in the first set of SSBs is less than a first threshold; the first transmission mode is one of a dynamically scheduled transmission mode or a configuration grant transmission mode; the first set of SSBs includes at least one SSB.

As an embodiment, the second communication device 410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus of the first communication device 410 to at least: receiving a first signal and a second signal, the first signal being associated with a first SSB, the first signal comprising a random access preamble; the second signal includes a first message indicating that at least one condition of a first set of conditions is satisfied; receiving a fourth set of signals; transmitting a third signal in response to receiving the second signal, the third signal comprising a second message indicating a first transmission mode; wherein the fourth set of signals is transmitted via the first transmission mode; the first set of conditions includes at least that the received power of all SSBs in the first set of SSBs is less than a first threshold; the first transmission mode is one of a dynamically scheduled transmission mode or a configuration grant transmission mode; the fourth set of signals includes at least one signal; the first set of SSBs includes at least one SSB.

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, produce acts comprising: receiving a first signal and a second signal, the first signal being associated with a first SSB, the first signal comprising a random access preamble; the second signal includes a first message indicating that at least one condition of a first set of conditions is satisfied; receiving a fourth set of signals; transmitting a third signal in response to receiving the second signal, the third signal comprising a second message indicating a first transmission mode; wherein the fourth set of signals is transmitted via the first transmission mode; the first set of conditions includes at least that the received power of all SSBs in the first set of SSBs is less than a first threshold; the first transmission mode is one of a dynamically scheduled transmission mode or a configuration grant transmission mode; the fourth set of signals includes at least one signal; the first set of SSBs includes at least one SSB.

As an 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 is a UE.

As an embodiment, the first communication device 450 is an RSU.

As an embodiment, the second communication device 410 is a base station.

As an embodiment, the second communication device 410 is an RSU.

As one example, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, and the controller/processor 459 is used to transmit a first signal in this application.

As an example, the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least one of the controller/processors 475 is used to receive the first signal in the present application.

As one example, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, and the controller/processor 459 is used to transmit a second signal in this application.

As an example, the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least one of the controller/processors 475 is used to receive the second signal in the present application.

As an example, the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, at least one of the transmit processor 416 or the controller/processor 475 is used to transmit the third signal in the present application.

As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456 or the controller/processor 459 is configured to receive a third signal in the present application.

As one embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, and the controller/processor 459 is used to transmit a fourth set of signals in the present application.

As an example, the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least one of the controller/processors 475 is configured to receive a fourth set of signals in the present application.

As one embodiment, the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, at least one of the transmit processor 416 or the controller/processor 475 is used to transmit the first signaling in the present application.

As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456 or the controller/processor 459 is configured to receive the first signaling in the present application.

As an example, the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, at least one of the transmit processor 416 or the controller/processor 475 is used to transmit a third message in the present application.

As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456 or the controller/processor 459 is configured to receive a third message in the present application.

As an example, the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, at least one of the transmit processor 416 or the controller/processor 475 is used to transmit the second signaling in the present application.

As an embodiment, at least one of the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456 or the controller/processor 459 is used to receive the second signaling in the present application.

As one example, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, and the controller/processor 459 is used to transmit a fifth signal in this application.

As an example, the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, at least one of the controller/processors 475 is used to receive the fifth signal in the present application.

Example 5

Embodiment 5 illustrates a wireless signal transmission flow diagram according to one embodiment of the present application, as shown in fig. 5.

For the followingFirst node U51Receiving a third message in step S511; transmitting a first signal in step S512; transmitting a second signal in step S513; receiving a third signal in step S514; the fourth set of signals is transmitted in step S515.

For the followingSecond node N52Transmitting a third message in step S521; receiving a first signal in step S522; receiving a second signal in step S523; transmitting a third signal in step S524; a fourth set of signals is received in step S525.

In embodiment 5, transmitting a first signal and a second signal, the first signal being associated with a first SSB, the first signal comprising a random access preamble; the second signal includes a first message indicating that at least one condition of a first set of conditions is satisfied; transmitting the fourth set of signals through the first transmission mode; receiving a third signal in response to transmitting the second signal, the third signal comprising a second message indicating the first transmission mode; wherein the first set of conditions includes at least that the received power of all SSBs in the first set of SSBs is less than a first threshold; the first transmission mode is one of a dynamically scheduled transmission mode or a configuration grant transmission mode; the fourth set of signals includes at least one signal; the first set of SSBs includes at least one SSB; the second message indicates the first transmission mode only when the first message indicates that the received power of all SSBs in the first set of SSBs is less than the first threshold; receiving a third message, the third message indicating the first set of SSBs; the third message indicates a second set of time-frequency resources; the third message is used to instruct the first node to enter an RRC inactive state; wherein the second set of time-frequency resources is reserved for the configuration grant transmission; the second message indicates a first set of time-frequency resources; wherein, the first sending mode is the sending mode of the configuration grant; any one of the first time-frequency resources belongs to the second time-frequency resource set; the first SSB does not belong to the first set of SSBs, the first set of time-frequency resources is used to transmit the fourth set of signals, the first set of time-frequency resources includes at least one time-frequency resource; monitoring a first signaling in a first time window, the first signaling being used to indicate a time-frequency resource for transmitting one signal of the fourth set of signals; the first sending mode is the dynamically scheduled sending mode; the second message indicates the first time window, and the first time window is located between any two adjacent time domain resources in the time domain resource set of the second time-frequency resource set after the receiving time of the third signal; the first message includes at least one MAC CE; transmitting the fourth set of signals while the first node is in the RRC inactive state; wherein the fourth set of signals is associated with the first SSB.

As an embodiment, the second node is a serving cell of the first node.

As an embodiment, the second node is a serving base station of the first node.

As an embodiment, the first node and the second node communicate over an air interface.

As an embodiment, the air interface is a Uu interface.

As an embodiment, the air interface is a PC5 interface.

As an embodiment, the second message indicates the first transmission mode only if the first message indicates that the received power of all SSBs in the first set of SSBs is less than the first threshold.

As an embodiment, the second message indicates the first transmission mode only if the first message indicates that the received power of all SSBs in the first set of SSBs is not greater than the first threshold.

As an embodiment, the second message indicates the first transmission mode only when the received power of all SSBs in the first set of SSBs is less than the first threshold.

As an embodiment, the second message indicates the first transmission mode only if the received power of all SSBs in the first set of SSBs is not greater than the first threshold.

As an embodiment, the second message is a higher layer message.

As an embodiment, the higher layer message is a layer 3 message.

As an embodiment, the higher layer message is a layer 2 message.

As an embodiment, the higher layer message is a MAC sublayer message.

As an embodiment, the third message is received over an air interface.

As an embodiment, the third message is used to instruct the first node to enter an RRC inactive state.

As an embodiment, the third message is RRC signaling.

As an embodiment, the third message is RRCRelease (RRC release) signaling.

As an embodiment, the third message is RRCRelease signaling, which includes a suspend configuration field.

As an embodiment, the third message includes a configuration uplink grant configuration message.

As one embodiment, the configuration is up-granted as CG-SDT.

As an embodiment, the third message comprises the first set of radio bearers.

As an embodiment, the third message indicates that data belonging to the first set of radio bearers may be transmitted using time-frequency resources granted by configuration in RRC inactive state.

As an embodiment, the third message indicates the first SSB set.

As one embodiment, the first SSB set is used for beam selection when the first node transmits using SDT mode in RRC inactive state.

As one embodiment, the third message includes an index for each SSB in the first set of SSBs.

As an embodiment, the third message comprises a data amount threshold for determining to send using SDT mode.

As an embodiment, the third message comprises an RSRP change threshold for TA verification.

As an embodiment, the third message indicates the first threshold.

As an embodiment, the first threshold is indicated by an rsrp-threshold SSB (SSB reference signal received power threshold) field (field).

As an embodiment, the first threshold is indicated by a CG-SDT-rsrp-threshold SSB (CG-SDT-SSB reference signal received power threshold) field.

As an embodiment, the third message indicates a second set of time-frequency resources reserved for uplink transmission of the configuration grant.

As an embodiment, the third message indicates time domain resources and frequency domain resources of the second set of time-frequency resources.

As an embodiment, the third message indicates a starting time of a first time-frequency resource in the second set of time-frequency resources.

As an embodiment, the third message indicates a period of time domain resources in the second set of time frequency resources.

As an embodiment, the third message indicates frequency domain resources in the second set of time-frequency resources.

As an embodiment, the second set of time-frequency resources comprises periodic time-frequency resources.

As an embodiment, the time intervals between any two adjacent time domain resources in the time domain resource set in the second time frequency resource set are the same; wherein the second set of time-frequency resources comprises at least two time-frequency resources.

As an embodiment, the frequency domain resources of any two time-frequency resources in the second time-frequency resource set are the same; wherein the second set of time-frequency resources comprises at least two time-frequency resources.

As an embodiment, the second set of time-frequency resources is reserved for the first node to perform data transmission in an RRC inactive state.

As an embodiment, the second set of time-frequency resources comprises at least one time-frequency resource.

As an embodiment, the second message indicates a first set of time-frequency resources, the first set of time-frequency resources being used for transmitting the fourth set of signals, the first set of time-frequency resources comprising at least one time-frequency resource.

As an embodiment, the second message implicitly indicates the first set of time-frequency resources.

As one embodiment, the phrase that the second message indicates that the first transmission mode is the transmission mode granted by the configuration includes: the second message implicitly indicates the first set of time-frequency resources.

As an embodiment, the second message does not explicitly indicate the first set of time-frequency resources.

As an embodiment, the first set of time-frequency resources comprises at least one time-frequency resource.

As an embodiment, the fourth set of signals is transmitted in the first set of time-frequency resources.

As one embodiment, the fourth set of signals is transmitted in the first set of time-frequency resources using a multi-antenna transmission parameter of the first SSB.

As an embodiment, any one of the first set of time-frequency resources belongs to the second set of time-frequency resources.

As an embodiment, the first set of time-frequency resources is a subset of the second set of time-frequency resources.

As an embodiment, at least one time-frequency resource of the second set of time-frequency resources does not belong to the first set of time-frequency resources.

As an embodiment, the first time-frequency resource in the second set of time-frequency resources does not belong to the first set of time-frequency resources.

As one embodiment, the first set of time-frequency resources includes M time-frequency resources, where the M time-frequency resources are last consecutive M time-frequency resources in the second set of time-frequency resources; wherein M is a positive integer not less than 1, and the second set of time-frequency resources includes more than M time-frequency resources.

As an embodiment, the first set of time-frequency resources includes time-frequency resources in the second set of time-frequency resources that are later than a time of receipt of the third signal.

As one embodiment, the second message indicates that the first transmission mode is a transmission mode granted by the configuration; wherein the first SSB does not belong to the first SSB set.

As an embodiment, the phrase that the first SSB does not belong to the first SSB set includes: the index of the first SSB is different from the index of any SSB in the first set of SSBs.

As one embodiment, the first SSB is one SSB of the K SSBs other than the first SSB set; wherein the first SSB set includes less than K SSBs.

As one embodiment, monitoring a first signaling in a first time window, the first signaling being used to indicate a time-frequency resource for transmitting one of the fourth set of signals; the first sending mode is the dynamically scheduled sending mode; the second message indicates the first time window.

As an embodiment, when the second message indicates that the first transmission mode is the dynamically scheduled transmission mode, the first node transmits the fourth set of signals on dynamically scheduled time-frequency resources.

As an embodiment, the first time window is located between any two adjacent time domain resources in the time domain resource set of the second time-frequency resource set after the receiving time of the third signal.

As an embodiment, the second message indicates the first time window.

As an embodiment, the second message indicates a starting instant of the first time window and a length of the first time window.

As an embodiment, the length of the first time window is symbolized.

As an embodiment, the length of the first time window is expressed in time slots.

As one embodiment, the length of the first time window is represented in subframes.

As one embodiment, the length of the first time window is expressed in milliseconds.

As one embodiment, the monitoring means includes searching.

As an embodiment, the monitoring means includes monitoring (monitor).

As an embodiment, the monitoring means comprises receiving.

As one embodiment, the phrase monitoring the first signaling includes: determining whether the first signaling is present by energy monitoring.

As one embodiment, the phrase monitoring the first signaling includes: determining whether the first signaling is present by coherent detection.

As one embodiment, the phrase monitoring the first signaling includes: determining whether the first signaling is present by maximum likelihood detection.

As one embodiment, the phrase monitoring the first signaling includes: and determining whether the first signaling exists through CRC detection.

As an embodiment, the first signaling is used to indicate time-frequency resources for transmitting one signal of the fourth set of signals.

As an embodiment, the first signaling is used to indicate that time domain resources of time-frequency resources transmitting one of the fourth set of signals belong to the time domain resource set of the second set of time-frequency resources.

As an embodiment, the first signaling is used to indicate that time domain resources of time-frequency resources transmitting one of the fourth set of signals do not belong to the time domain resource set of the second set of time-frequency resources.

As an embodiment, the first signaling is used to indicate that frequency domain resources of time-frequency resources transmitting one signal of the fourth set of signals are different from the frequency domain resources of the second set of time-frequency resources.

As an embodiment, the first signaling is used to indicate that frequency domain resources of time-frequency resources transmitting one signal of the fourth set of signals are the same as the frequency domain resources of the second set of time-frequency resources.

As an embodiment, the first signaling is used to indicate that one signal of the fourth set of signals is to be transmitted in association with the first SSB.

As an embodiment, the first signaling is associated with the first SSB.

As an embodiment, the first signaling is PDCCH.

As an embodiment, the first signaling is DCI.

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

As an embodiment, the second message indicates that the first transmission mode is the dynamically scheduled transmission mode; wherein the first SSB does not belong to the first SSB set.

As a sub-embodiment of the above embodiment, time-frequency resources belonging to the second set of time-frequency resources after receiving the third signal cannot be allocated to the first node for transmitting the fourth set of signals.

As an embodiment, the second message indicates that the first transmission mode is the dynamically scheduled transmission mode; wherein the first SSB belongs to the first SSB set.

As a sub-embodiment of the above embodiment, the first node is in a state of poor channel reception quality.

As a sub-embodiment of the above embodiment, the first threshold is greater than the second threshold.

As a sub-embodiment of the above embodiment, the received power of the first SSB is smaller than the first threshold and larger than the second threshold.

As an embodiment, the phrase that the first SSB belongs to the first SSB set includes: the index of the first SSB is the same as the index of one SSB in the first set of SSBs.

As an embodiment, the first message comprises at least one MAC CE.

As an embodiment, the first node is in the RRC inactive state when transmitting the fourth set of signals.

As one embodiment, the first node performs CG-SDT transmission in an RRC inactive state, and after initiating a CG-SDT procedure, if at least one condition in the first set of conditions is satisfied, indicates to the second node through a random access procedure, the second node indicates a transmission mode of subsequent data in the CG-SDT procedure.

As an embodiment, the fourth set of signals is associated with the first SSB.

As an embodiment, any signal in the fourth set of signals is associated with the first SSB.

Example 6

Embodiment 6 illustrates a schematic diagram of a time domain resource set of a second time-frequency resource set versus a time domain resource set of a first time-frequency resource set according to one embodiment of the present application, as shown in fig. 6. Wherein the dashed box represents the time domain resource set of the first time frequency resource set, the dotted box represents the time domain resource set of the second time frequency resource set, and the vertical line represents one time domain resource.

As an embodiment, a first time-frequency resource of the second set of time-frequency resources is used for transmitting MAC SDUs including CCCH.

As an embodiment, a signal transmitted in any one of the time-frequency resources belonging to the second set of time-frequency resources before the first signal is transmitted is associated with one SSB of the first set of SSBs.

As an embodiment, the first set of time-frequency resources is not used for transmitting MAC SDUs including the CCCH.

As one embodiment, the CCCH is used to request RRC recovery.

As an embodiment, the CCCH includes an RRCResumeRequest (RRC resume request).

As an embodiment, the CCCH includes RRCResumeRequest1 (RRC resume request 1).

As an embodiment, the first node receives RRCRelease signaling after a time domain resource of a last time-frequency resource in the first set of time-frequency resources; in response to receiving the RRCRelease signaling, the first node enters an RRC inactive state.

As an embodiment, the RRCRelease signaling includes an updated CG-SDT configuration message.

As an embodiment, any one of the first set of time-frequency resources belongs to the second set of time-frequency resources; wherein the first transmission mode is a transmission mode granted by the configuration.

As an embodiment, the time domain resource of any one of the first set of time-frequency resources is later than the time of reception of the third signal.

Example 7

Embodiment 7 illustrates a schematic diagram of a first message according to one embodiment of the present application, as shown in fig. 7.

As an embodiment, the first message includes at least C-RNTI MAC CE, and the C-RNTI MAC CE includes a C-RNTI that is used to uniquely identify the first node at its serving cell.

As an embodiment, the first message including only C-RNTI MAC CE indicates an invalid TA.

As an embodiment, the first message includes a BSRMAC CE including a BSR used to indicate a data volume (datavolume) of data to be transmitted belonging to the first radio bearer set buffered in the first node.

As one embodiment, the first message including BSRMAC CE indicates that SR is triggered due to UL resource deficiency.

As an embodiment, the first message includes a first MAC CE.

As an embodiment, the first MAC CE is used to indicate that the received power of all SSBs in the first set of SSBs is less than the first threshold.

As an embodiment, the first MAC CE is used to indicate that the received power of all SSBs in the first set of SSBs is not greater than the first threshold.

As an embodiment, the second message indicates the first transmission mode only when the first message includes the first MAC CE.

As an embodiment, the logical channel identity of the first MAC CE is a positive integer between 35 and 44 including 35 and 44.

As an embodiment, the logical channel identity of the first MAC CE is a positive integer between 64 and 313 including 64 and 313.

As one embodiment, the first MAC CE has a fixed size (fixed size).

As an embodiment, the size of the first MAC CE is 0 bits.

As an embodiment, the name of the first MAC CE includes CG-SDT.

As an embodiment, the name of the first MAC CE includes SSB.

As an embodiment, the first MAC CE is named NQS (no qualified SSB), MAC CE.

As an embodiment, the name of the first MAC CE is SSB failure (SSB failure) MAC CE.

As an embodiment, the first MAC CE is named CG-SDT SSB failure (CG-SDT SSB failure) MAC CE.

As an embodiment, the logical channel priority of the first MAC CE is the same as the logical channel priority of the BFR (BeamFailure Recovery ) MAC CE.

In case a of embodiment 7, the first message includes only C-RNTI MAC CE.

In case B of embodiment 7, the first message includes C-RNTI MAC CE and BSRMAC CE.

In case B of embodiment 7, the first message includes C-RNTI MAC CE and the first MAC CE.

In case B of embodiment 7, the first message includes a C-RNTI MAC CE, BSRMAC CE and a first MAC CE.

It should be noted that, the arrangement sequence of the plurality of MAC CEs in the first message is not limited in sequence.

As one embodiment, when the first message does not include the first MAC CE, transmitting the fourth set of signals through the transmission mode granted by the configuration; wherein the fourth set of signals is associated with one SSB of the first set of SSBs.

Example 8

Embodiment 8 illustrates a schematic diagram of a second message according to one embodiment of the present application, as shown in fig. 8.

As an embodiment, the second message includes at least a second MAC CE, the second MAC CE including at least one byte; wherein the second message indicates the first transmission mode.

As an embodiment, the lowest bit of the first byte of the second MAC CE is used to indicate the first transmission mode.

As an embodiment, the lowest bit of the first byte of the second MAC CE is named as ST (scheduling type).

As one embodiment, when the lowest bit of the first byte of the second MAC CE is 0, the first transmission mode is indicated to be the dynamically scheduled transmission mode; and when the lowest bit of the first byte of the second MAC CE is 1, indicating that the first transmission mode is the transmission mode granted by the configuration.

As one embodiment, when the lowest bit of the first byte of the second MAC CE is 0, the first transmission mode is indicated as the transmission mode granted by the configuration; and when the lowest bit of the first byte of the second MAC CE is 1, indicating the first transmission mode to be the dynamically scheduled transmission mode.

As an embodiment, the second MAC CE includes only one byte, and the lowest bit of the one byte included in the second MAC CE is used to indicate the first transmission mode.

As a sub-embodiment of the above embodiment, when the second MAC CE indicates that the first transmission mode is the transmission mode of the configuration grant, the upper 7 bits of the one byte included in the second MAC CE are reserved.

As a sub-embodiment of the above embodiment, when the second MAC CE indicates that the first transmission mode is the dynamically scheduled transmission mode, the second MAC CE includes the upper 7 bits of the one byte indicating the start time of the first time window and the length of the first time window.

As an embodiment, the second MAC CE includes a variable number of bytes, a lowest bit of a first byte included in the second MAC CE is used to indicate the first transmission mode, and a high 7 bits of the first byte included in the second MAC CE are reserved.

As a sub-embodiment of the above embodiment, when the second MAC CE indicates that the first transmission mode is the transmission mode of the configuration grant, the second MAC CE includes only the first byte.

As a sub-embodiment of the above embodiment, when the second MAC CE indicates that the first transmission mode is the dynamically scheduled transmission mode, the second MAC CE includes a plurality of bytes, and bytes included in the second MAC CE other than the first byte indicate a start time of the first time window and a length of the first time window.

In case a of embodiment 8, the second MAC CE included in the second message includes only one byte, and the first transmission mode is the dynamically scheduled transmission mode.

In case B of embodiment 8, the second MAC CE included in the second message includes Q bytes, where Q is a positive integer greater than 1, and the first transmission mode is the dynamically scheduled transmission mode.

As one embodiment, the second MAC CE has a fixed size (fixed size).

As an embodiment, the name of the second MAC CE includes CG-SDT.

As an embodiment, the second MAC CE is named CG-SDT MAC CE.

As an embodiment, the logical channel identity of the second MAC CE is a positive integer between 35 and 46 including 35 and 46.

As an embodiment, the logical channel identity of the first MAC CE is a positive integer between 64 and 308 including 64 and 308.

Example 9

Embodiment 9 illustrates a schematic diagram of a relationship between a first time window and a time domain resource set of a second time-frequency resource set according to an embodiment of the present application, as shown in fig. 9.

As an embodiment, the first time window is located after a reception instant of the third signal and before a start instant of any one of the time domain resources of the set of time domain resources of the second set of time frequency resources.

As an embodiment, the second message comprises a first time offset, the first time offset being a time interval between the start instant of the first time window and a start instant of one of the set of time domain resources of the second set of time frequency resources closest to the first time window.

As an embodiment, the end time of the first time window is no later than the start time of the closest one of the sets of time domain resources of the second set of time frequency resources.

As an embodiment, the time interval is symbolized.

As an embodiment, the time interval is represented by a time slot.

As an embodiment, the time interval is represented in subframes.

As an embodiment, the time interval is expressed in milliseconds (ms).

As an embodiment, the starting time of one time domain resource is the starting time of the first OFDM symbol of the time domain resource.

As an embodiment, the starting time of one time domain resource is the starting time of the first time slot of the time domain resource.

As an embodiment, the starting time of one time domain resource is the starting time of the first subframe of the time domain resource.

As an embodiment, the first time window is periodic.

As an embodiment, the time intervals of two adjacent first time windows are the same as the time intervals of two adjacent time domain resources in the time domain resource set of the second time frequency resource set.

As an embodiment, after receiving the third signal, the first node monitors the first signaling during the first time window.

As an embodiment, the first signaling is used to indicate a time-frequency resource for transmitting one signal of the fourth set of signals; the time domain resource of the time-frequency resource is earlier than the starting time of the next first time window after the first time window in which the first signaling is received.

Example 10

Embodiment 10 illustrates a schematic diagram of a first SSB and multiple antenna parameters according to one embodiment of the present application, as shown in fig. 10.

As an embodiment, channel sensing is performed prior to transmitting the first signal, the channel sensing being used to select a multi-antenna reception parameter of the first SSB from K multi-antenna reception parameters.

As an embodiment, the channel perception comprises energy detection.

As an embodiment, the channel perception comprises a plurality of energy detections.

As an embodiment, the channel perception comprises sequence coherent detection.

As an embodiment, the channel awareness comprises CRC (Cyclic Redundancy Check ) detection.

As an embodiment, the channel awareness comprises SS-RSRP measurements.

As one embodiment, the channel sensing is performed using a plurality of multi-antenna reception parameters.

As one embodiment, the first SSB is one of K SSBs; the K SSBs are respectively transmitted through K wireless signals, the K wireless signals are transmitted in K time units, and the K time units are mutually orthogonal.

As an embodiment, the K wireless signals are monitored in K time units, respectively, the K multi-antenna reception parameters are used for monitoring in the K time units, respectively, and the K multi-antenna reception parameters are indicated by K indexes, respectively.

Example 11

Embodiment 11 illustrates a block diagram of a processing device 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 and a first transmitter 1102. The first receiver 1101 includes at least one of the transmitter/receiver 418 (including the antenna 420), the receive processor 470, the multi-antenna receive processor 472, or the controller/processor 475 of fig. 4 of the present application; the first transmitter 1102 includes at least one of the transmitter/receiver 418 (including the antenna 420), the transmit processor 416, the multi-antenna transmit processor 471, or the controller/processor 475 of fig. 4 of the present application.

In embodiment 11, a first transmitter 1102 transmits a first signal and a second signal, the first signal being associated with a first SSB, the first signal comprising a random access preamble; the second signal includes a first message indicating that at least one condition of a first set of conditions is satisfied; transmitting the fourth set of signals through the first transmission mode; a first receiver 1101 that receives a third signal in response to transmitting the second signal, the third signal including a second message indicating the first transmission mode; wherein the first set of conditions includes at least that the received power of all SSBs in the first set of SSBs is less than a first threshold; the first transmission mode is one of a dynamically scheduled transmission mode or a configuration grant transmission mode; the fourth set of signals includes at least one signal; the first set of SSBs includes at least one SSB.

As an embodiment, the first receiver 1101 receives a third message, the third message indicating the first set of SSBs; the third message indicates a second set of time-frequency resources; the third message is used to instruct the first node to enter an RRC inactive state; wherein the second set of time-frequency resources is reserved for the configuration grant transmission.

As an embodiment, the first receiver 1101 receives a third message, the third message indicating the first set of SSBs; the third message indicates a second set of time-frequency resources; the third message is used to instruct the first node to enter an RRC inactive state; wherein the second set of time-frequency resources is reserved for the configuration grant transmission; the second message indicates a first set of time-frequency resources used to transmit the fourth set of signals, the first set of time-frequency resources including at least one time-frequency resource; wherein, the first sending mode is the sending mode of the configuration grant; any one of the first time-frequency resources belongs to the second time-frequency resource set; the first SSB does not belong to the first SSB set.

As an embodiment, the first receiver 1101 receives a third message, the third message indicating the first set of SSBs; the third message indicates a second set of time-frequency resources; the third message is used to instruct the first node to enter an RRC inactive state; wherein the second set of time-frequency resources is reserved for the configuration grant transmission; the first receiver 1101 monitors a first signaling in a first time window, the first signaling being used to indicate a time-frequency resource for transmitting one of the fourth set of signals; the first sending mode is the dynamically scheduled sending mode; the second message indicates the first time window, the first time window being located between any two adjacent time domain resources in the time domain resource set of the second set of time-frequency resources after the time of receipt of the third signal.

As an embodiment, the first message comprises at least one MAC CE.

As one embodiment, the first node is in the RRC inactive state when transmitting the fourth set of signals; wherein the fourth set of signals is associated with the first SSB.

Example 12

Embodiment 12 illustrates a block diagram of the processing means in the second node according to an embodiment of the present application, as shown in fig. 12. In fig. 12, the second node processing arrangement 1200 comprises 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, or the controller/processor 475 of fig. 4 of the present application; the second transmitter 1202 includes at least one of a transmitter/receiver 418 (including an antenna 420), a transmit processor 416, a multi-antenna transmit processor 471, or a controller/processor 475 of fig. 4 of the present application.

In embodiment 10, a second receiver 1201 receives a first signal and a second signal, the first signal being associated with a first SSB, the first signal comprising a random access preamble; the second signal includes a first message indicating that at least one condition of a first set of conditions is satisfied; receiving a fourth set of signals; a second transmitter 1201, responsive to receiving the second signal, transmitting a third signal comprising a second message indicating a first transmission mode; wherein the fourth set of signals is transmitted via the first transmission mode; the first set of conditions includes at least that the received power of all SSBs in the first set of SSBs is less than a first threshold; the first transmission mode is one of a dynamically scheduled transmission mode or a configuration grant transmission mode; the fourth set of signals includes at least one signal; the first set of SSBs includes at least one SSB.

As an embodiment, the second transmitter 1202 sends a third message, the third message indicating the first SSB set; the third message indicates a second set of time-frequency resources; the third message is used to instruct the sender of the first signal to enter an RRC inactive state; wherein the second set of time-frequency resources is reserved for the configuration grant transmission.

As an embodiment, the second transmitter 1202 sends a third message, the third message indicating the first SSB set; the third message indicates a second set of time-frequency resources; the third message is used to instruct the sender of the first signal to enter an RRC inactive state; wherein the second set of time-frequency resources is reserved for the configuration grant transmission; the second message indicates a first set of time-frequency resources used to transmit the fourth set of signals, the first set of time-frequency resources including at least one time-frequency resource; wherein, the first sending mode is the sending mode of the configuration grant; any one of the first time-frequency resources belongs to the second time-frequency resource set; the first SSB does not belong to the first SSB set.

As an embodiment, the second transmitter 1202 sends a third message, the third message indicating the first SSB set; the third message indicates a second set of time-frequency resources; the third message is used to instruct the sender of the first signal to enter an RRC inactive state; wherein the second set of time-frequency resources is reserved for the configuration grant transmission; the second transmitter 1202 transmits first signaling in a first time window, the first signaling being used to indicate a time-frequency resource for transmitting one signal of the fourth set of signals; the first sending mode is the dynamically scheduled sending mode; the second message indicates the first time window, the first time window being located between any two adjacent time domain resources in the time domain resource set of the second time-frequency resource set after the transmission time of the third signal.

As an embodiment, the first message comprises at least one MAC CE.

As one embodiment, the sender of the first signal is in the RRC inactive state when receiving the fourth set of signals; wherein the fourth set of signals is associated with the first SSB.

Those of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described methods may be implemented by a program that instructs associated hardware, and the program may be stored on 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 using one or more integrated circuits. Accordingly, each module unit in the above embodiment may be implemented in a hardware form or may be implemented in a software functional module form, and the 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, an internet card, a low power device, an eMTC (enhancedMachine Type Communication ) device, an NB-IoT device, a vehicle-mounted communication device, an aircraft, an airplane, an unmanned plane, a remote control plane, and other wireless communication devices. The second type of communication node or base station or network side device in the present application includes, but is not limited to, wireless communication devices such as macro cellular base stations, micro cellular base stations, home base stations, relay base stations, enbs, gnbs, transmission receiving nodes TRP (Transmission and Reception Point, transmission and reception points), relay satellites, satellite base stations, air base stations, and the like.

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. Accordingly, the presently disclosed embodiments are considered in all respects to be illustrative and not restrictive. The scope of the invention is indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalents are intended to be embraced therein.

Claims

1. A first node for wireless communication, comprising:

2. The first node of claim 1, wherein the second message indicates the first transmission mode only if the first message indicates that the received power of all SSBs in the first set of SSBs is less than the first threshold.

3. The first node according to claim 1 or 2, comprising:

the first receiver receiving a third message, the third message indicating the first SSB set; the third message indicates a second set of time-frequency resources; the third message is used to instruct the first node to enter an RRC inactive state;

4. A first node according to claim 3, characterized in that the second message indicates a first set of time-frequency resources, which is used for transmitting the fourth set of signals, which first set of time-frequency resources comprises at least one time-frequency resource;

5. A first node according to claim 3, comprising:

the first receiver monitoring for first signaling in a first time window, the first signaling being used to indicate a time-frequency resource for transmitting one of the fourth set of signals;

6. The first node according to any of claims 1 to 5, characterized in that the first message comprises at least one MAC CE.

7. The first node according to any of claims 1 to 6, wherein the first node is in the RRC inactive state when transmitting the fourth set of signals;

wherein the fourth set of signals is associated with the first SSB.

8. A second node for wireless communication, comprising:

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

Transmitting the fourth set of signals through the first transmission mode;

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

receiving a fourth set of signals;