CN114205915A

CN114205915A - Method and device used for wireless communication

Info

Publication number: CN114205915A
Application number: CN202010987792.1A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2022-03-18

Abstract

A method and apparatus for wireless communication is disclosed. The first node determines a first reference value; sending a first message; wherein, when the first reference value is less than a first threshold, the first message includes a first data unit and does not include a first control unit; when the first reference value is greater than the first threshold, the first message includes the first control unit and does not include the first data unit; the first control unit is used to trigger a first link connection; the count values in the first set of count values are used to determine the first reference value; any one of the first set of count values is associated with a number of random access pilot transmissions in a random access procedure occurring in a first time window; the first time window is prior to a time of transmission of the first message, the first set of count values including at least one count value. The method and the device can obviously reduce signaling overhead, improve transmission efficiency and simultaneously obtain the beneficial effect of saving electricity.

Description

Method and device used for wireless communication

Technical Field

The present application relates to methods and apparatuses in wireless communication systems, and more particularly, to methods and apparatuses in wireless communication for supporting transmission of small data using a random access procedure.

Background

Random Access (RA) is a common method in cellular communication, and uplink synchronization and uplink and downlink transmission resources can be obtained through a 4-step (4-step) or 2-step (2-step) Random Access process.

The RRC _ INACTIVE state is a Radio Resource Control (RRC) state newly introduced into the NR (New Radio). When the user enters the RRC _ INACTIVE state, the user may retain part of the network configuration information. When a service arrives, the user may perform data transmission by re-entering the RRC _ CONNECTED state. Until Rel-16, data transmission in RRC _ INACTIVE state is not supported in 3GPP (3rd Generation Partner Project) RAN (Radio Access Network).

The application scenes of future wireless communication systems are more and more diversified, and with the rapid development of the internet of things, a small data service is an important service in future wireless communication. The small data service has two main characteristics, one is sporadic, that is, the arrival time interval of two adjacent small data packets is longer; secondly, the small data packet includes a small amount of data. The 3GPP RAN #86 passes through the WI (Work Item) of NR at the second congress, and starts to standardize the small data transmission in the RRC _ INACTIVE state.

Disclosure of Invention

The inventor finds out through research that when small data arrives, if the user is in the RRC _ INACTIVE state, the user needs to enter the RRC _ CONNECTED state to perform small data transmission. A large amount of signaling interaction is needed when a user enters the RRC _ CONNECTED flow, and the transmission efficiency of only carrying out small data transmission is low; meanwhile, the user needs to continuously monitor the control channel in the RRC _ CONNECTED state, and the power saving effect cannot be obtained.

In order to solve the above problem, the present application discloses a solution for small data transmission in an RRC _ INACTIVE state, in which a sending method of small data is determined by using user measurement and/or statistical information, so that the transmission efficiency is significantly improved while an energy saving effect is obtained. Without conflict, embodiments and features in embodiments in a first node of the present application may be applied to a second node and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict. Further, although the present application was originally directed to the Uu air interface, the present application can also be used for the PC5 interface. Further, although the original purpose of the present application is to the terminal and base station scenario, the present application is also applicable to the V2X (Vehicle-to-electrical networking) scenario, the communication scenario between the terminal and the relay, and the communication scenario between the relay and the base station, and achieves similar technical effects in the terminal and base station scenario. Furthermore, adopting a unified solution for different scenarios (including but not limited to V2X scenario and terminal to base station communication scenario) also helps to reduce hardware complexity and cost. In particular, the terms (telematics), nouns, functions, variables in the present application may be explained (if not specifically stated) with reference to the definitions in the 3GPP specification protocols TS36 series, TS38 series, TS37 series.

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

determining a first reference value;

sending a first message;

wherein, when the first reference value is less than a first threshold, the first message includes a first data unit and does not include a first control unit; when the first reference value is greater than the first threshold, the first message includes the first control unit and does not include the first data unit; the first control unit is used to trigger a first link connection; the count values in the first set of count values are used to determine the first reference value; any one of the first set of count values is associated with a number of random access pilot transmissions in a random access procedure occurring in a first time window; the first time window is prior to a time of transmission of the first message, the first set of count values including at least one count value.

As an example, the present application is applicable to small data transmissions.

As an embodiment, the problem to be solved by the present application is: signaling overhead and power savings in small data transmissions.

As an example, the solution of the present application comprises: through user measurement and/or statistical information, under the condition of being met, the user does not enter the RRC _ CONNECTED state but maintains the RRC _ INACTIVE state to transmit small data through a random access process.

As an embodiment, the beneficial effects of the present application include: signaling overhead is obviously reduced, and transmission efficiency is improved; the user equipment obtains the beneficial effect of saving power.

According to one aspect of the application, comprising:

sending a first signature sequence prior to the first message;

and the end time of the first time window is not later than the sending time of the first characteristic sequence, and the sending of the first characteristic sequence and the sending of the first message belong to the same random access process.

According to one aspect of the application, comprising:

sending a second message;

wherein the first reference value is less than the first threshold value; the second message includes a second data unit, the first data unit and the second data unit both being transmitted over a first radio bearer; the second data unit transmitted by the first radio bearer and the data unit except the first data unit are not sent between the time domain resource occupied by the second message and the time domain resource occupied by the first message; the first time window includes time domain resources occupied by the second message.

According to one aspect of the application, comprising:

the duration of the starting time of the first time window from the ending time of the first time window is not greater than a second threshold.

According to one aspect of the application, comprising:

receiving a third message;

wherein the third message is a response to the first message.

According to one aspect of the application, comprising:

forgoing establishment of the first link connection;

wherein the first message includes the first data unit and does not include the first control unit.

According to one aspect of the application, comprising:

establishing the first link connection;

transmitting a first wireless signal;

wherein the first message includes the first control unit and does not include the first data unit; the first wireless signal comprises the first data unit; the first wireless signal is transmitted later than the third message is received.

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

receiving a first message;

wherein a first reference value is determined; when the first reference value is less than a first threshold, the first message includes a first data unit and does not include a first control unit; when the first reference value is greater than the first threshold, the first message includes the first control unit and does not include the first data unit; the first control unit is used to trigger a first link connection; the count values in the first set of count values are used to determine the first reference value; any one of the first set of count values is associated with a number of random access pilot transmissions in a random access procedure occurring in a first time window; the first time window is prior to a time of receipt of the first message, the first set of count values including at least one count value.

According to one aspect of the application, comprising:

receiving a first signature sequence prior to the first message;

and the end time of the first time window is not later than the receiving time of the first characteristic sequence, and the receiving of the first characteristic sequence and the receiving of the first message belong to the same random access process.

According to one aspect of the application, comprising:

receiving a second message;

wherein the first reference value is less than the first threshold value; the second message includes a second data unit, the first data unit and the second data unit both being transmitted over a first radio bearer; receiving the second data unit transmitted through the first radio bearer and the data unit except the first data unit between the time domain resource occupied by the second message and the time domain resource occupied by the first message; the first time window includes time domain resources occupied by the second message.

According to one aspect of the application, comprising:

in response to receiving the first message, a third message is sent.

According to one aspect of the application, comprising:

the first link connection is abandoned from being established;

According to one aspect of the application, comprising:

the first link connection is established;

receiving a first wireless signal;

wherein the first message includes the first control unit and does not include the first data unit; the first wireless signal comprises the first data unit; the first wireless signal is received later than the third message is transmitted.

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

a first receiver determining a first reference value;

a first transmitter to transmit a first message;

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

a second receiver receiving the first message;

Drawings

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

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

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

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

FIG. 4 illustrates a hardware module diagram of a communication device according to one embodiment of the present application;

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

FIG. 6 illustrates another wireless signal transmission flow diagram according to one embodiment of the present application;

FIG. 7 illustrates a diagram of a relationship of a first message, a second message, and a first time window, according to one embodiment of the present application;

fig. 8 illustrates a flow diagram of a random access procedure according to an embodiment of the present application;

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

fig. 10 illustrates a block diagram of a processing device in a second node according to an embodiment of the present application.

Detailed Description

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

Example 1

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

In embodiment 1, the first node 100 determines a first reference value in step 101; sending a first message in step 102; wherein, when the first reference value is less than a first threshold, the first message includes a first data unit and does not include a first control unit; when the first reference value is greater than the first threshold, the first message includes the first control unit and does not include the first data unit; the first control unit is used to trigger a first link connection; the count values in the first set of count values are used to determine the first reference value; any one of the first set of count values is associated with a number of random access pilot transmissions in a random access procedure occurring in a first time window; the first time window is prior to a time of transmission of the first message, the first set of count values including at least one count value.

In one embodiment, the first receiver receives a first set of reference signals and determines a first channel quality based on the received first set of reference signals.

As one embodiment, the act of determining the first reference value is performed in response to the first channel quality being greater than a third threshold.

As one embodiment, the act of determining a first reference value is performed in response to the first channel quality being equal to a third threshold.

As one embodiment, the act of determining that the first reference value is not performed is in response to the first channel quality being less than a third threshold.

As one embodiment, the act of determining that the first reference value is not performed is in response to the first channel quality being equal to a third threshold.

As one embodiment, the first set of reference signals includes at least one reference signal.

As one embodiment, the reference Signal includes SSB (Synchronization Signal Block).

For one embodiment, the Reference Signal includes a CSI-RS (Channel State Information Reference Signal).

As an embodiment, the Reference Signal includes CRS (Common Reference Signal).

As an embodiment, the measurement values for any one reference signal in the first set of reference signals constitute a first set of measurements; the first set of measurements is used to generate the first channel quality.

As an embodiment, the measurement value is RSRP (Reference Signal Received Power).

As an embodiment, the measurement value is RSRQ (Reference Signal Received Quality).

As an embodiment, the measured value is RSSI (Received Signal Strength Indicator).

As an embodiment, the first channel quality is obtained by layer 3filtering (layer 3filtering) the measurement values in the first measurement set.

As an embodiment, the first channel quality is an average of the measurement values comprised by the first measurement set.

As an embodiment, the first channel quality is obtained by performing an iterative calculation on the measurement values included in the first measurement set; at the 1 st iteration, the first channel quality is the first measurement value included in the first measurement set; the first channel quality is a second channel quality in a next iteration; at the nth iteration, the first channel quality is the sum of the second channel quality multiplied by alpha and the nth measurement value in the first measurement set multiplied by (1-alpha); said α is a value between 0 and 1; the n is not greater than the number of measurements comprised by the first measurement set; the first measurement value corresponds to a first reference signal in the first reference signal set, and the receiving time of the first reference signal is earlier than the receiving time of the reference signals except the first reference signal in the first reference signal set.

As an example, the first channel quality may be in dBm (decibel-milliwatts).

As an example, the first channel quality may be in milliwatts (mw).

As an example, the first channel quality is in dB.

As an example, the first channel quality is in units of watts.

For one embodiment, the third threshold is configurable.

As an embodiment, the third threshold is configured by a network (configured).

As an embodiment, the third threshold is pre-configured (pre-configured).

As an embodiment, the third threshold is configured by higher layer signaling.

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

As an embodiment, the third threshold may be carried in all or part of an IE (Information Element) in RRC signaling.

As an embodiment, the third threshold may be carried in a full or partial Field (Field) in an IE in RRC signaling.

As an embodiment, the third threshold may be carried in all or part of a MAC (Medium Access Control) layer signaling.

As an example, the third threshold value may be in dBm (decibel-milliwatts).

As one example, the third threshold may be in milliwatts (mw).

As an example, the unit of the third threshold is dB (decibel).

As one example, the unit of the third threshold is in watts.

As one embodiment, when the first channel quality is greater than the third threshold, the first message includes a first data unit and does not include a first control unit.

As one embodiment, when the first channel quality is less than the third threshold, the first message includes a first control unit and does not include a first data unit.

As one embodiment, when the first channel quality is equal to the third threshold, the first message includes a first data unit and does not include a first control unit.

As one embodiment, when the first channel quality is equal to the third threshold, the first message includes a first control unit and does not include a first data unit.

As one embodiment, the first message is sent over an air interface.

For one embodiment, the air interface comprises an interface for wireless signal transmission.

For one embodiment, the air interface comprises an interface for wireless signaling.

For one embodiment, the air interface includes Uu.

For one embodiment, the air interface includes a PC 5.

As an embodiment, the first Message includes content in an MsgA (Message a) cache.

For one embodiment, the first Message includes content in a Msg3(Message 3) cache.

As an embodiment, the first message includes a mac pdu (Protocol Data Unit).

As an embodiment, the first message includes a MAC CE (Control Element).

As an embodiment, when the first reference value is smaller than a first threshold, the first message includes a first data unit and does not include a first control unit.

As an embodiment, when the first reference value is greater than the first threshold, the first message includes the first control unit and does not include the first data unit.

As one embodiment, when the first reference value is equal to the first threshold, the first message includes the first data unit and does not include the first control unit.

As one embodiment, when the first reference value is equal to the first threshold, the first message includes the first control unit and does not include the first data unit.

As an embodiment, the first data unit is transmitted through a DTCH (Dedicated Traffic CHannel).

As an embodiment, the first Data unit is transmitted over a Data Radio Bearer (DRB).

As an embodiment, the first data unit includes a data amount (data volume) not greater than a fourth threshold.

For one embodiment, the fourth threshold is configurable.

As an embodiment, the fourth threshold is configured by a network (configured).

As an embodiment, the fourth threshold is pre-configured (pre-configured).

As an embodiment, the fourth threshold is configured by higher layer signaling.

For one embodiment, the fourth threshold is configured by the second node.

As an embodiment, the fourth threshold may be carried in all or part of IEs in RRC signaling.

As an embodiment, the fourth threshold may be carried in all or part of a field in an IE in RRC signaling.

As an embodiment, the fourth threshold is expressed in bytes (Byte, B).

As one example, the fourth threshold is expressed in number of Kilobytes (KB).

As an embodiment, the first Data Unit includes at least one RLC (Radio Link Control, Radio Link layer Control protocol) SDU (Service Data Unit).

As an embodiment, the first Data unit includes at least one PDCP (Packet Data Convergence Protocol) SDU.

As an embodiment, the first data unit comprises one RLC SDU segment.

As an embodiment, the first Data Unit includes an RLC PDU (Protocol Data Unit).

For one embodiment, the first data unit includes a PDCP PDU.

As an embodiment, the first data unit includes at least one MAC SDU.

For one embodiment, when the first reference value is smaller than the first threshold, the first message includes a first MAC CE.

For one embodiment, the first message includes the first MAC CE when the first reference value is equal to the first threshold value.

As an embodiment, the first MAC CE is a BSR (Buffer Status Report).

As an embodiment, the pending transmission data unit indicated by the BSR and the first data unit are both transmitted over the first radio bearer.

As an embodiment, the first Control unit includes a CCCH (Common Control Channel) SDU.

As an embodiment, the first control unit is transmitted through a Signaling Radio Bearer (SRB).

As an example, the first control unit is transmitted via SRB 0.

As one embodiment, the first control unit includes RRCResumeRequest (RRC resume request) including resummebause (resume reason).

As an embodiment, the first control unit includes rrcresemequest (RRC continuation request-long identity), which includes ResumeCause.

As an embodiment, mo (mobile originated) -data is included in resumecuse included in the first control unit.

As an embodiment, mo-SMS (Short Message Service) is included in resumecuse included in the first control unit.

As an embodiment, the first control unit comprises a resumecuse comprising emergency.

As an embodiment, the resumecuse included in the first control unit includes mt-Access (mobile terminated-Access).

As an embodiment, the resume policy included in the first control unit includes mps (Multimedia Priority Service) -Priority access therein.

As an embodiment, the resumecuse included in the first control unit includes mcs (Mission Critical Service) -priority access.

As an embodiment, the resumecuse included in the first control unit includes highPriorityAccess (high priority access).

As an embodiment, mo-voiceCall (voice phone) is included in resumecuse included in the first control unit.

As an embodiment, the resume command included in the first control unit includes mo-VideoCall (video telephony).

As an embodiment, the resume unause included in the first control unit includes mo-signalling therein.

As an embodiment, the action triggering the first link connection means: the RRC CONNECTED (RRC _ CONNECTED) state is entered.

As an embodiment, the action triggering the first link connection means: continuing (resume) the first radio bearer.

As an embodiment, the action triggering the first link connection means: and entering an RRC connected state and continuing the first radio bearer.

As an embodiment, the action triggering the first link connection means: and triggering the first node to enter an RRC _ CONNECTED state from an RRC _ INACTIVE state.

As an embodiment, the action triggering the first link connection means: triggering the first node to enter an RRC _ CONNECTED state from an RRC _ IDLE state.

For one embodiment, the first link connection comprises an RRC connection.

As one embodiment, the first link connection comprises the first radio bearer connection.

As an embodiment, the first link connection comprises a dedicated signaling (dedicated signaling) connection.

As an embodiment, the first message comprises a second control unit when the first reference value is smaller than the first threshold value.

As an embodiment, the first message comprises a second control unit when the first reference value is equal to the first threshold value.

As an embodiment, the second control unit instructs to send small data (small data) and does not trigger the first link connection.

As an embodiment, the second control unit comprises a CCCH SDU.

As an embodiment, the second control unit is transmitted through a Signaling Radio Bearer (SRB).

As an example, the second control unit is transmitted via SRB 0.

As an embodiment, the second control unit includes a RRCResumeRequest including a resummebause.

As an embodiment, the second control unit comprises rrcresemequestl comprising ResumeCause.

As an embodiment, the second control unit includes a resumecuse indication SDT (Small Data Transmission).

As an embodiment, the second control unit includes resumecuse including mo-SDT therein.

As one embodiment, the second control unit includes a resumecuse that includes mt-SDT therein.

As an embodiment, the count values included in the first set of count values are arranged from far to near from the transmission time of the first message; the last count value included in the first count value group indicates the number of times of sending random access pilot frequency in a random access process closest to the sending time of the first message in the first time window; a first count value included in the first set of count values indicates a number of random access pilot transmissions in a random access procedure farthest from a time of transmission of the first message in the first time window.

As an embodiment, the first reference value is a last count value comprised in the first set of count values.

As an embodiment, the first reference value is an average of count values included in the first set of count values.

As an embodiment, the first reference value is a weighted average of the count values comprised in the first set of count values.

As an embodiment, the first reference value is obtained by performing iterative computation on the count values included in the first count value group; at the 1 st iteration, the first reference value is a first count value included in the first count value group; the first reference value is a second statistical value in the next iteration; at the nth iteration, the first reference value is the sum of the value of the second statistic value multiplied by beta and the value of the nth count value multiplied by (1-beta) in the first count value group; β is a value between 0 and 1; the first count value indicates the number of random access pilot transmissions in a random access procedure in the first time window that is closest to the start of the first time window.

As an example, the β is 0.1.

As an example, the β is 0.2.

As an example, the β is 0.3.

As an example, the β is 0.4.

As an example, the β is 0.5.

For one embodiment, the first threshold is configurable.

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

As an embodiment, the first threshold is pre-configured (pre-configured).

As an embodiment, the first threshold is configured by higher layer signaling.

For one embodiment, the first threshold is configured by the second node.

As an embodiment, the first threshold may be carried in all or part of IEs in RRC signaling.

As an embodiment, the first threshold may be carried in all or part of a field in an IE in RRC signaling.

As an embodiment, the first threshold may be carried in all or part of a field in one MAC layer signaling.

As an embodiment, the first threshold is expressed by a number of random access pilot transmissions in a random access procedure.

For one embodiment, the first threshold is a positive integer not greater than preambleTransMax (random access pilot maximum number of transmissions).

As an embodiment, the preambleTransMax indicates the maximum number of random access pilot transmissions allowed in one random access procedure.

As an embodiment, any one of the first set of count values is the number of transmissions of a random access pilot plus 1 in one random access procedure occurring in the first time window.

As an embodiment, any one count value in the first set of count values is a value of PREAMBLE _ TRANSMISSION _ COUNTER in one random access procedure occurring in the first time window.

As an embodiment, the PREAMBLE _ TRANSMISSION _ COUNTER is maintained at the MAC entity.

As an example, the value of PREAMBLE _ TRANSMISSION _ COUNTER is set to 1 when a MAC entity initiates (initiate) a random access procedure.

As an embodiment, in a Random Access procedure, after sending a Random Access pilot, if a Random Access Response (RAR) for the Random Access pilot is not received before a Random Access Response window (ra-Response window) expires (expire), a value of PREAMBLE _ TRANSMISSION _ COUNTER is increased by 1.

As an embodiment, in a random access procedure, after sending MsgA, if no random access response is received for MsgA before MsgB (Message B) response window (MsgB-ResponseWindow) expires, the value of PREAMBLE _ TRANSMISSION _ COUNTER is incremented by 1.

As an embodiment, the behavior sending MsgA includes sending a random access pilot and sending contents in the MsgA buffer on a time-frequency resource corresponding to the random access pilot.

As an embodiment, the random access response comprises a response for at least the former of the random access pilot and the content in the MsgA buffer.

As an example, in a random access procedure, after sending Msg3, if a Contention resolution (Contention resolution) response is not received for Msg3 before the random access Contention resolution timer (ra-ContentionResolutionTimer) expires, the value of PREAMBLE _ TRANSMISSION _ COUNTER is incremented by 1.

As an example, the random access procedure is triggered when a first event occurs.

As an embodiment, the random access procedure is performed at a MAC entity of the first node.

For one embodiment, the first event includes an initial access (initial access) from an RRC idle state.

For one embodiment, the first event comprises a state transition (transition) from an RRC inactive state.

As an embodiment, the first event includes a reestablishment procedure of RRC connection.

For one embodiment, the first event comprises a cell handover (handover).

As an embodiment, the first event includes a non-synchronized uplink event when downlink or uplink data arrives in an RRC _ CONNECTED state.

As an embodiment, the first event includes that there is no SR (scheduling request) resource when uplink data arrives.

For one embodiment, the first event comprises an SR failure.

As an embodiment, the first event comprises a synchronization reconfiguration requested by the RRC.

As an embodiment, the first event includes a request for other SI (System Information).

For one embodiment, the first event includes Beam failure recovery (Beam failure recovery).

As one embodiment, the first event includes establishing time alignment (time) when a SCell (Secondary Cell) joins

As an embodiment, the end time of the first time window is no later than the transmission time of the first message.

Example 2

Embodiment 2 illustrates a network architecture diagram according to an embodiment of the present application, as shown in fig. 2. Fig. 2 illustrates a diagram of a network architecture 200 of NR 5G, LTE (Long-Term Evolution), and LTE-a (Long-Term Evolution-enhanced) systems. The NR 5G, LTE or LTE-a network architecture 200 may be referred to as a 5GS (5G System)/EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS/EPS 200 may include one or more UEs (User Equipment) 201, NG-RANs (next generation radio access networks) 202, 5 GCs (5G Core networks )/EPCs (Evolved Packet cores) 210, HSS (Home Subscriber Server)/UDMs (Unified Data Management) 220, and internet services 230. The 5GS/EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the 5GS/EPS provides packet switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit switched services or other cellular networks. The NG-RAN includes NR node b (gNB)203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gnbs 203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (Transmission Reception Point), or some other suitable terminology, and in an NTN (Non Terrestrial/satellite Network) Network, the gNB203 may be a satellite, an aircraft, or a ground base station relayed through a satellite. The gNB203 provides the UE201 with an access point to the 5GC/EPC 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a Digital audio player (e.g., MP3 player), a camera, a game console, a drone, an aircraft, a narrowband internet of things device, a machine type communication device, a terrestrial vehicle, an automobile, a vehicular device, a vehicular communication unit, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the 5GC/EPC210 through an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity)/AMF (Authentication Management domain)/SMF (Session Management Function) 211, other MME/AMF/SMF214, S-GW (serving Gateway)/UPF (User Plane Function) 212, and P-GW (Packet data Network Gateway)/UPF 213. The MME/AMF/SMF211 is a control node that handles signaling between the UE201 and the 5GC/EPC 210. In general, the MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW/UPF212, and the S-GW/UPF212 itself is connected to the P-GW/UPF 213. The P-GW provides UE IP address allocation as well as other functions. The P-GW/UPF213 is connected to the internet service 230. The internet service 230 includes an operator-corresponding internet protocol service, and may specifically include an internet, an intranet, an IMS (IP Multimedia Subsystem), and a PS (Packet Switching) streaming service.

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

As an embodiment, the NR node B203 corresponds to a second node in the present application.

As an embodiment, the UE201 corresponds to the second node in this application, and the UE241 corresponds to the first node in this application.

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

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

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

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

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

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

As an embodiment, the gNB203 is a satellite device.

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

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

As an embodiment, the radio link between the UE201 and the UE241 is a sidelink.

As an embodiment, the UE201 and the gNB203 are connected through a Uu interface.

Example 3

Embodiment 3 illustrates a schematic diagram of radio protocol architecture of a user plane and a control plane according to an embodiment of the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of radio protocol architecture for the user plane 350 and the control plane 300, fig. 3 showing the radio protocol architecture of the control plane 300 for the UE and the gNB in three layers: layer 1, layer 2 and layer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2(L2 layer) 305 is above PHY301, and is responsible for the link between the UE and the gNB through PHY 301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the gbb on the network side. The PDCP sublayer 304 provides data ciphering and integrity protection, and the PDCP sublayer 304 also provides handover support for UEs between the gnbs. The RLC sublayer 303 provides segmentation and reassembly of packets, retransmission of missing packets by ARQ, and the RLC sublayer 303 also provides duplicate packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channel identities. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ (Hybrid Automatic Repeat Request) operations. The RRC (Radio Resource Control) sublayer 306 in layer 3(L3 layer) in the Control plane 300 is responsible for obtaining Radio resources (i.e., Radio bearers) and configuring the lower layers using RRC signaling between the gNB and the UE. Although not shown, the UE may further have a V2X layer above the RRC sublayer 306 in the control plane 300, where the V2X layer is responsible for generating a PC5 QoS parameter set and a QoS rule according to received service data or a service request, and generates a PC5 QoS stream corresponding to the PC5 QoS parameter set and sends a PC5 QoS stream identifier and a corresponding PC5 QoS parameter set to an AS (Access Stratum) layer for QoS processing of packets belonging to the PC5 QoS stream identifier by the AS layer; the V2X layer also comprises a PC5-S Signaling Protocol (PC5-Signaling Protocol) sublayer, and the V2X layer is responsible for indicating whether each transmission of the AS layer is PC5-S transmission or V2X service data transmission. The radio protocol architecture of the user plane 350 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, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 further includes an SDAP (Service Data Adaptation Protocol) sublayer 356, and the SDAP sublayer 356 is responsible for mapping between QoS (Quality of Service) streams and Data Radio Bearers (DRBs) to support diversity of services. The radio protocol architecture of the UE in the user plane 350 may include part or all of the protocol sublayers of the SDAP sublayer 356, the PDCP sublayer 354, the RLC sublayer 353, and the MAC sublayer 352 at the L2 layer. Although not shown, the UE may also have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.).

As an example, the entities of the sub-layers of the control plane in fig. 3 constitute an SRB in the vertical direction.

As an example, the entities of the sub-layers of the control plane in fig. 3 constitute a DRB in the vertical direction.

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

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

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

As an embodiment, the first message in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the first data unit in the present application is generated in the PDCP304 or PDCP 354.

As an embodiment, the first data unit in this application is generated in the RLC303 or the RLC 353.

As an embodiment, the first control unit in the present application is generated in the RRC 306.

As an embodiment, the first signature sequence in this application is generated in the PHY301 or the PHY 351.

As an embodiment, the second message in this application is generated in the MAC302 or the MAC 352.

As an embodiment, the third message in this application is generated in the MAC302 or the MAC 352.

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

As an example, the

L2 layer

305 or 355 belongs to a higher layer.

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

Example 4

Embodiment 4 illustrates a hardware module schematic diagram 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 communications device 450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.

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

In transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, an upper layer data packet from a core network or an upper layer data packet from a data source 477 is provided to the controller/processor 475. The core network and data source 477 represents all protocol layers above the L2 layer. The controller/processor 475 implements the functionality of layer L2. In transmissions from the second communications device 410 to the first communications device 450, the controller/processor 475 provides for header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communications device 450 based on various priority metrics. The controller/processor 475 is also responsible for retransmission of lost packets, and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 410, as well as mapping of signal constellation based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate the physical channels carrying the time-domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream that is then provided to a different antenna 420.

In a transmission from the second communications apparatus 410 to the first communications apparatus 450, each receiver 454 receives a signal through its respective antenna 452 at the first communications apparatus 450. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream that is provided to a receive processor 456. Receive processor 456 and multi-antenna receive processor 458 implement the various signal processing functions of the L1 layer. A multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. Receive processor 456 converts the baseband multicarrier symbol stream after the receive analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals to be used for channel estimation are demultiplexed by the receive processor 456, and the data signals are subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered at a receive processor 456 and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communications device 410 on the physical channel. The upper layer data and control signals are then provided to a controller/processor 459. The controller/processor 459 implements the functionality of the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In transmissions from the second communications device 410 to the first communications device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the second communications device 410. The upper layer packet is then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In a transmission from the first communications device 450 to the second communications device 410, an upper layer data packet is provided at the first communications device 450 to a controller/processor 459 using a data source 467. Data source 467 represents all protocol layers above the L2 layer. Similar to the send function at the second communications apparatus 410 described in the transmission from the second communications apparatus 410 to the first communications apparatus 450, the controller/processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels, implementing L2 layer functions for the user plane and control plane. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to said second communications device 410. A transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding by a multi-antenna transmit processor 457 including codebook-based precoding and non-codebook based precoding, and beamforming, and the transmit processor 468 then modulates the resulting spatial streams into multi-carrier/single-carrier symbol streams, which are provided to different antennas 452 via a transmitter 454 after analog precoding/beamforming in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and provides the radio frequency symbol stream to the antenna 452.

In a transmission from the first communication device 450 to the second communication device 410, the functionality at the second communication device 410 is similar to the receiving functionality at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives an rf signal through its respective antenna 420, converts the received rf signal to a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multiple antenna receive processor 472 collectively implement the functionality of the L1 layer. Controller/processor 475 implements the L2 layer functions. The controller/processor 475 can be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In transmission from the first communication device 450 to the second communication device 410, the controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from the first communication device 450. Upper layer packets from the controller/processor 475 may be provided to the core network or all protocol layers above the L2 layer and various control signals may also be provided to the core network or L3 for L3 processing.

As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, for use with the at least one processor, the first communication device 450 apparatus at least: determining a first reference value; sending a first message; wherein, when the first reference value is less than a first threshold, the first message includes a first data unit and does not include a first control unit; when the first reference value is greater than the first threshold, the first message includes the first control unit and does not include the first data unit; the first control unit is used to trigger a first link connection; the count values in the first set of count values are used to determine the first reference value; any one of the first set of count values is associated with a number of random access pilot transmissions in a random access procedure occurring in a first time window; the first time window is prior to a time of transmission of the first message, the first set of count values including at least one count value.

As an embodiment, the first communication device 450 apparatus includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: determining a first reference value; sending a first message; wherein, when the first reference value is less than a first threshold, the first message includes a first data unit and does not include a first control unit; when the first reference value is greater than the first threshold, the first message includes the first control unit and does not include the first data unit; the first control unit is used to trigger a first link connection; the count values in the first set of count values are used to determine the first reference value; any one of the first set of count values is associated with a number of random access pilot transmissions in a random access procedure occurring in a first time window; the first time window is prior to a time of transmission of the first message, the first set of count values including at least one count value.

As an embodiment, the second communication device 410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 410 means at least: receiving a first message; wherein a first reference value is determined; when the first reference value is less than a first threshold, the first message includes a first data unit and does not include a first control unit; when the first reference value is greater than the first threshold, the first message includes the first control unit and does not include the first data unit; the first control unit is used to trigger a first link connection; the count values in the first set of count values are used to determine the first reference value; any one of the first set of count values is associated with a number of random access pilot transmissions in a random access procedure occurring in a first time window; the first time window is prior to a time of receipt of the first message, the first set of count values including at least one count value.

As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: receiving a first message; wherein a first reference value is determined; when the first reference value is less than a first threshold, the first message includes a first data unit and does not include a first control unit; when the first reference value is greater than the first threshold, the first message includes the first control unit and does not include the first data unit; the first control unit is used to trigger a first link connection; the count values in the first set of count values are used to determine the first reference value; any one of the first set of count values is associated with a number of random access pilot transmissions in a random access procedure occurring in a first time window; the first time window is prior to a time of receipt of the first message, the first set of count values including at least one count value.

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

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

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

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

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

For one embodiment, the second communication device 410 is a relay node.

For one embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, or the controller/processor 459 is configured to transmit a first message as described herein.

For one embodiment, at least one of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470 or the controller/processor 475 is configured to receive a first message in the present application.

For one embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, or the controller/processor 459 is configured to transmit a second message as described herein.

For one embodiment, at least one of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470 or the controller/processor 475 is configured to receive the second message.

For one embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, or the controller/processor 459 is configured to transmit a first signature sequence as described herein.

For one embodiment, at least one of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470 or the controller/processor 475 is configured to receive a first signature sequence as described herein.

For one embodiment, at least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416 or the controller/processor 475 is configured to send the third message.

For one 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 accordance with the present application.

For one embodiment, at least one of the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, or the controller/processor 459 is configured to transmit a first wireless signal as described herein.

For one embodiment, at least one of the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470 or the controller/processor 475 is configured to receive a first wireless signal as described herein.

For one 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 determine a first reference value.

Example 5

Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in fig. 5. In FIG. 5, a first node U1 and a second node N2 communicate over a wireless interface. It is specifically noted that the order in this example does not limit the order of signal transmission and the order of implementation in this application.

For theFirst node U1Transmitting a second message in step S11; determining a first reference value in step S12, the first reference value being smaller than a first threshold; sending a first message in step S13, the first message including the first data unit and not including the first control unit; the third message is received in step S14.

For theSecond node N2Receiving a second message in step S21; receiving a first message including a first data unit and not including a first control unit in step S22; a third message is sent in step S23.

As an embodiment, the second message is sent over an air interface.

As an embodiment, the second message comprises content in an MsgA cache.

For one embodiment, the second message includes content in the Msg3 cache.

As an embodiment, the second message includes one MAC PDU.

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

For one embodiment, the second message includes a second data unit.

As one embodiment, the second message includes a second data unit and does not include the first control unit.

As one embodiment, the second message includes the second control unit.

As an embodiment, the second data unit is transmitted via DTCH.

As an embodiment, the second data unit is transmitted over a data radio bearer.

As one embodiment, the second data unit includes an amount of data that is not greater than the fourth threshold.

As an embodiment, the second data unit includes one RLC SDU.

For one embodiment, the second data unit includes a PDCP SDU.

As an embodiment, the second data unit includes an RLC SDU segment.

For one embodiment, the second data unit includes an RLC PDU.

For one embodiment, the second data unit includes a PDCP PDU.

As an embodiment, the second data unit includes one MAC SDU.

As an embodiment, the first data unit and the second data unit are both transmitted over a first radio bearer.

As an embodiment, the first radio bearer is used for transmitting traffic to which the first data unit and the second data unit belong.

As an embodiment, the first radio bearer is used for transmitting QoS (Quality of Service) flows to which the first data unit and the second data unit belong.

As an embodiment, the first radio bearer includes one DRB.

As an embodiment, the first radio bearer comprises a PDCP bearer.

As an embodiment, the first radio bearer comprises an RLC bearer.

As an embodiment, the first radio bearer includes one RLC channel (channel).

As an embodiment, an LCID (Logical Channel Identifier) corresponding to the first data unit is the same as an LCID corresponding to the second data unit.

As an embodiment, the first node maintains an SDAP (Service Data Adaptation Protocol) entity of the first radio bearer.

As an embodiment, the first node maintains a PDCP entity of the first radio bearer.

For one embodiment, the first node maintains an RLC entity of the first radio bearer.

As an embodiment, the first time window includes time domain resources occupied by the second message.

As an embodiment, the time domain resource occupied by the second message includes a time domain resource occupied by multiple transmissions of the second message.

As an embodiment, the multiple transmissions of the second message belong to the same random access procedure.

As one embodiment, the multiple transmissions of the second message include HARQ retransmissions.

As one embodiment, the multiple transmissions of the second message include MsgA retransmissions.

For one embodiment, the time domain resource includes at least one slot (slot).

As an embodiment, the one slot includes a positive integer number of multicarrier symbols no greater than 14.

For one embodiment, the time domain resource includes at least one mini-slot.

As an embodiment, the number of multicarrier symbols comprised by said one minislot is smaller than the number of multicarrier symbols comprised by said one timeslot.

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

As one embodiment, the Multicarrier symbol comprises an FBMC (Filter Bank Multicarrier) symbol.

As an embodiment, the multicarrier symbol comprises a GFDM (generalized frequency division multiplexing) symbol.

As an embodiment, the multicarrier symbol comprises a BFDM (biorthogonal Frequency Division Multiplexing) symbol.

For one embodiment, the time domain resources include at least one subframe (subframe).

As an embodiment, the second data unit and the data unit other than the first data unit transmitted through the first radio bearer are not sent between the time domain resource occupied by the second message and the time domain resource occupied by the first message.

As an embodiment, the second data unit and the first data unit are two RLC PDUs with adjacent RLC SN (sequence number) transmitted by the first radio bearer.

As an embodiment, the second data unit and the first data unit each comprise two segments of one RLC SDU.

As an embodiment, the second data unit and the first data unit are two RLC PDUs having the same RLC SN and having adjacent RLC SOs (segment offsets) transmitted over the first radio bearer.

As an embodiment, the second data unit and the first data unit are two PDCP PDUs with adjacent PDCP SNs transmitted over the first radio bearer.

As an embodiment, the first reference value is equal to a value of PREAMBLE _ TRANSMISSION _ COUNTER when the second message is determined to be successfully received in the random access procedure to which the second message belongs; the first reference value is less than the first threshold value.

As an embodiment, the determination that the second message is successfully received in the random access procedure to which the phrase belongs comprises: after the second message is sent in the MsgA in the random access process, the MsgB is received before the MsgB response window expires; the MsgB includes success random access rar (successful random access response).

As an embodiment, the determination that the second message is successfully received in the random access procedure to which the phrase belongs comprises: receiving a contention resolution response before expiration of a contention resolution timer after sending the second message in Msg3 of a random access procedure; the Contention Resolution response includes a UE Contention Resolution Identity (UE Contention Resolution Identity) that is the same as the first 48 bits of the CCCH SDU included in the Msg 3.

As an embodiment, the determination that the second message is successfully received in the random access procedure to which the phrase belongs comprises: after the second message is sent in the MsgA of the random access process, receiving a first response before the MsgB response window expires; the first response includes scheduling information for the new data.

As an embodiment, the determination that the second message is successfully received in the random access procedure to which the phrase belongs comprises: receiving a second response before expiration of a contention resolution timer after sending the second message in Msg3 of a random access procedure; the second response includes scheduling information for the new data.

As an embodiment, the determination that the second message is successfully received in the random access procedure to which the phrase belongs comprises: after the second message is sent in the MsgA in the random access process, a Physical Downlink Control Channel (PDCCH) is received before a response window of the MsgB expires, and the PDCCH includes scheduling information of new data.

As an embodiment, the determination that the second message is successfully received in the random access procedure to which the phrase belongs comprises: after sending the second message in Msg3 of the random access procedure, receiving a PDCCH including scheduling information of new data before a contention resolution timer expires.

As an embodiment, the scheduling information includes at least one of time-frequency resources, MCS (Modulation and Coding Scheme), or HARQ process identification used for transmitting scheduled data.

In one embodiment, the second node sends a third message over an air interface in response to receiving the first message.

As one embodiment, when the first message includes the first data unit and does not include the first control unit, the third message indicates to forgo establishing the first link connection.

As an embodiment, the third message comprises the MsgB.

For one embodiment, the third message includes the contention resolution response.

For one embodiment, the third message includes a rrcreelease (RRC release) IE.

As an embodiment, the rrcreelease IE includes a suspendeconfig field.

As an embodiment, the third message includes an RRCReject (RRC reject) IE.

As an embodiment, the third message indicates that the first data unit was successfully sent.

As an embodiment, the third message includes scheduling information for a third data unit, the scheduling information indicating that the transmission of the third data unit is a new data transmission; the third data unit and the first data unit are both transmitted over the first radio bearer.

Example 6

Embodiment 6 illustrates another wireless signal transmission flow diagram according to an embodiment of the present application, as shown in fig. 6. In FIG. 6, a first node U3 and a second node N4 communicate over a wireless interface. It is specifically noted that the order in this example does not limit the order of signal transmission and the order of implementation in this application. The step in dashed box F0 is not required.

For theFirst node U3Determining a first reference value in step S31; transmitting the first feature sequence in step S32; transmitting a first message in step S33; receiving a third message in step S34; establishing a first link connection in step S35; the first wireless signal is transmitted in step S36.

For theSecond node N4Receiving a first feature sequence in step S41; receiving a first message in step S42; transmitting a third message in step S43; the first wireless signal is received in step S44.

As an embodiment, the first signature sequence is sent before sending the first message.

As an embodiment, the end time of the first time window is no later than the transmission time of the first signature sequence.

As an embodiment, the first signature sequence is a random access pilot.

As an embodiment, the first signature sequence is a pseudo-random sequence.

As an embodiment, the first signature sequence is a Gold sequence.

As an embodiment, the first signature sequence is an M-sequence.

As an embodiment, the first signature sequence is a ZC (Zadoff-chu) sequence.

As an embodiment, the first signature sequence is a random access pilot in a random access procedure performed by a physical layer.

As an embodiment, the sending of the first signature sequence and the sending of the first message belong to the same random access procedure.

As an embodiment, the sending of the first signature sequence and the sending of the first message belong to one MsgA sending.

As an embodiment, the sending instant of the first signature sequence and a TA (Timing Advance) command comprised by the corresponding RAR are used to determine the sending instant of the first message.

As an embodiment, the sending time of the first message is the sum of the sending time of the first signature sequence and a time adjustment value indicated by a TA command included in the RAR.

As one example, the time adjustment value is T_A·16·64/2^μWherein T is_AThe TA command comprised by the corresponding RAR; the mu indicates that the subcarrier spacing of the frequency domain resource for transmitting the first message is 2^μ15kHz (Kilohertz).

As an embodiment, when the first message includes the first data unit and does not include the first control unit, relinquishing establishment of the first link connection.

As one embodiment, the act of forgoing establishing the first link connection comprises: enter RRC _ INACTIVE state.

As one embodiment, the act of forgoing establishing the first link connection comprises: the RRC _ IDLE state is entered.

As one embodiment, the act of forgoing establishing the first link connection comprises: and stopping monitoring the PDCCH of the second node.

As one embodiment, the act of forgoing establishing the first link connection comprises: and closing a radio frequency unit of BWP (BandWidth Part, partial BandWidth) to which the frequency domain resource occupied by the first message belongs.

As one embodiment, the act of forgoing establishing the first link connection comprises: and updating Inactive AS (Access Stratum) context (context) stored by the first node by using the information carried in the suspendConfig domain.

As an embodiment, the third message indicates that the first link connection is established when the first message includes the first control unit and does not include the first data unit.

For one embodiment, the third message includes a rrcreesume IE (RRC resume) IE.

As one embodiment, the rrcreesume IE includes configuration information of the first radio bearer.

As an embodiment, the third message includes a RRC setup IE.

As one embodiment, the RRCSetup IE includes configuration information of the first radio bearer.

For one embodiment, the third message indicates that the first link connection is established.

As one embodiment, the third message indicates to continue (resume) transmission of the first radio bearer.

As one embodiment, the act of establishing the first link connection includes: the RRC _ CONNECTED state is entered.

As one embodiment, the act of establishing the first link connection includes: continuing the first radio bearer.

As one embodiment, the act of establishing the first link connection includes: monitoring the PDCCH of the second node.

As an embodiment, after receiving the third message, sending a fourth message; in response to sending the fourth message, the first node enters an RRC _ CONNECTED state.

For one embodiment, the fourth message includes RRCResumeComplete (RRC resume complete).

For one embodiment, the fourth message includes a RRC setup complete.

As an embodiment, the first wireless signal is transmitted later than the fourth message.

As an embodiment, the first wireless signal is transmitted over Uu.

As an embodiment, the first wireless signal occupies a PUSCH (Physical Uplink Shared Channel).

For one embodiment, the first wireless signal occupies one physical layer channel.

As one embodiment, the first data unit is used to generate a first TB (Transport Block) Block.

As one embodiment, all or a portion of the first TB block is used to generate the first wireless signal.

As one embodiment, all or part of the first TB block is used with a reference signal to generate the first wireless signal.

As an embodiment, all bits or a part of bits in the first TB block sequentially undergo CRC Calculation (CRC Calculation), Channel Coding (Channel Coding), Rate matching (Rate matching), Scrambling (Scrambling), Modulation (Modulation), Layer Mapping (Layer Mapping), Antenna Port Mapping (Antenna Port Mapping), Mapping to Virtual Resource Blocks (Mapping to Virtual Resource Blocks), Mapping from Virtual Resource Blocks to Physical Resource Blocks (Mapping to Physical Resource Blocks), OFDM Baseband Signal Generation (OFDM Baseband Signal Generation), and Modulation Up-conversion (Modulation Up conversion) to obtain the first radio Signal.

Example 7

Embodiment 7 illustrates a relationship diagram of a first message, a second message and a first time window according to an embodiment of the present application, as shown in fig. 7.

As an embodiment, a duration of a start time of the first time window from the end time of the first time window is not greater than a second threshold.

As an embodiment, the ending time of the first time window is a starting time of a time slot occupied by the first signature sequence.

As an embodiment, the ending time of the first time window is a time when the MAC entity initiates a random access procedure to which the first message belongs.

As an embodiment, the third time is a time earlier than the end time of the first time window and a time length from the end time of the first time window is the second threshold.

As an embodiment, the starting time of the first time window is the third time.

As an embodiment, the starting time of the first time window is a later time of a starting time of a time slot occupied by a second signature sequence and the third time.

As an embodiment, the ending time of the first time window is an ending time of a time slot occupied by the second message.

As an embodiment, the ending time of the first time window is a time when the second message is determined to be successfully received in the random access procedure to which the second message belongs.

For one embodiment, the second threshold is configurable.

As an embodiment, the second threshold is configured by a network.

As an embodiment, the second threshold is preconfigured.

As an embodiment, the second threshold is configured by higher layer signaling.

For one embodiment, the second threshold is configured by the second node.

As an embodiment, the second threshold may be carried in all or part of IEs in RRC signaling.

As an embodiment, the second threshold may be carried in all or part of a field in an IE in RRC signaling.

As an embodiment, the second threshold may be carried in all or part of a field in one MAC layer signaling.

As an embodiment, the second threshold is expressed in number of slots.

As an example, the second threshold is expressed in terms of a number of subframes.

As one embodiment, the unit of the second threshold is ms (milliseconds).

For one embodiment, the second signature sequence is a random access pilot.

As an embodiment, the second signature sequence is a pseudo-random sequence.

As an embodiment, the second signature sequence is a Gold sequence.

As an embodiment, the second signature sequence is an M-sequence.

As an embodiment, the second signature sequence is a ZC sequence.

As an embodiment, the second signature sequence and the second message belong to the same random access procedure.

As an embodiment, the sending time of the second signature sequence and the TAcommand included by the corresponding RAR are used to determine the sending time of the second message.

As an embodiment, the sending time of the second signature sequence and the TAcommand included by the corresponding RAR are used to determine the sending time of the first message.

As an embodiment, no random access pilot is sent between the second message and the first message.

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

As an embodiment, after receiving the second message, the second node sends the first response over an air interface, where the first response includes the scheduling information of the first message.

As an embodiment, after receiving the second message, the second node sends the second response over an air interface, where the second response includes the scheduling information of the first message.

As an embodiment, after receiving the second message, the second node sends a PDCCH over an air interface, where the PDCCH includes scheduling information of the first message.

As an embodiment, the number of count values comprised in the first set of count values is the same as the number of random access procedures occurring in the first time window.

As an embodiment, at least one random access procedure has been initiated in the first time window.

In one embodiment, at least one count value is included in the first set of count values.

As an embodiment, the first message does not belong to any random access procedure occurring in the first time window.

As shown in case a in fig. 7, the first time window includes the time domain resource occupied by the second signature sequence and the time domain resource occupied by the second message; the number of times of sending a random access pilot when the second message is determined to be successful in the random access process to which the second message belongs is used to determine the first reference value; the first reference value is less than the first threshold; not sending a signature sequence between the first message and the second message; the second message and the first message belong to the same random access procedure.

As shown in case B of fig. 7, the first time window may include a plurality of random access procedures; the number of transmissions of a random access pilot in each random access procedure comprised by the plurality of random access procedures is used to determine the first reference value; the first signature sequence and the first message belong to the same random access procedure.

Example 8

Embodiment 8 illustrates a flow chart of a random access procedure according to an embodiment of the present application, as shown in fig. 8.

As an embodiment, the random access procedure is a 2-step random access procedure; the first step in the 2-step random access process comprises sending MsgA; the second step in the one 2-step random access procedure comprises receiving the MsgB.

As a sub-embodiment of the foregoing embodiment, a random access response received in the second step in the 2-step random access procedure includes bi (backoff indicator); the BI indicates preamble _ backoff (random access pilot backoff); and if the value of PREAMBLE _ TRANSMISSION _ COUNTER does not reach the msgA-TransMax value plus 1, randomly selecting a backoff time between 0 and PREAMBLE _ backoff, and then executing the first step and the second step in the 2-step random access process again and alternately.

As an embodiment, the random access procedure is a 4-step random access procedure: the first step in the 4-step random access process comprises sending a random access pilot; the second step in the 4-step random access process comprises receiving a random access response; the third step in the 4-step random access process comprises sending Msg 3; the fourth step in the 4-step random access procedure includes receiving a contention resolution response.

As a sub-embodiment of the foregoing embodiment, the RAR received in the second step in the 4-step random access procedure includes a BI; the BI indicates preamble _ backoff; if the value of PREAMBLE _ TRANSMISSION _ COUNTER does not reach the value of PREAMBLE TransMax plus 1, reselecting a random access pilot frequency for TRANSMISSION after randomly selecting a backoff time between 0 and PREAMBLE _ backoff; if the value of PREAMBLE _ transition _ COUNTER reaches the PREAMBLE TransMax plus 1, the 4-step random access procedure ends and the random access problem is reported to the upper layer (upper layer).

As a sub-embodiment of the foregoing embodiment, in the 4-step random access procedure, after the Msg3 is sent, HARQ feedback for the Msg3 is received before the contention resolution timer expires; if the HARQ feedback is NACK (Negative ACKnowledgement), retransmitting the Msg3 before the contention resolution timer expires.

As a sub-embodiment of the foregoing embodiment, in the 4-step random access procedure, after the Msg3 is sent, the PDCCH is received before the contention resolution timer expires; the PDCCH indicates that the Msg3 sends successfully and schedules new data transmission; the new data and the data in the Msg3 buffer belong to the same radio bearer.

As an embodiment, the random access process is a 2-step to 4-step random access process; the first step in the process of the 2-step to 4-step random access comprises sending MsgA; the second step in the 2-step to 4-step random access process comprises receiving a random access response; the first step and the second step in the 2-step to 4-step random access process are alternately and repeatedly executed; the 2-step random access procedure ends when the value of PREAMBLE _ transition _ COUNTER reaches the msgA-TransMax value plus 1 and transitions to a 4-step random access procedure.

As a sub-embodiment of the foregoing embodiment, the 2-step random access procedure and the 4-step random access procedure are configured simultaneously in the 2-step to 4-step random access procedure.

As an embodiment, the random access procedure is a 2-step fallback to 4-step random access procedure; the first step in the process of returning from the step 2 to the step 4 comprises sending MsgA; the second step in the process of returning from the step 2 to the step 4 comprises receiving a random access response; the third step in the 2-step fallback to 4-step random access procedure comprises sending Msg 3; the step 2 back to the fourth step in the 4-step random access procedure comprises receiving a contention resolution response.

As a sub-embodiment of the above-mentioned embodiment, the random access response received in the second step of the 2-step fallback to 4-step random access procedure includes a fallback rar (fallback random access response), a third step of instructing the fallback to 4-step random access procedure is sent Msg3, and a contention resolution response is received in a fourth step of the 4-step random access procedure.

As a sub-embodiment of the above embodiment, the Msg3 has the same content as the MsgA.

As an embodiment, the MsgB belongs to the random access response.

As one embodiment, the random access procedure comprises a non-contention based random access procedure; the random access pilot included in the non-contention based random access procedure is UE-specific.

As one embodiment, the random access procedure comprises a contention-based random access procedure; the random access pilot included in the contention-based random access procedure is randomly selected from a set of random access pilots.

A 2-step random access procedure is shown as case a in fig. 8.

The 4-step random access procedure is shown as case B in fig. 8.

As shown in case C of fig. 8, a 2-step to 4-step random access procedure; the dotted ellipse indicates that the first step and the second step in the 2-step to 4-step random access process are alternately repeated to set the value of PREAMBLE _ TRANSMISSION _ COUNTER to msgA-TransMax plus 1.

The 2-step back-to-4-step random access procedure is shown as case D in fig. 8.

Example 9

Embodiment 9 is a block diagram illustrating a configuration of a processing apparatus in a first node according to an embodiment of the present application, as shown in fig. 9. In fig. 9, a first node processing apparatus 900 includes a first receiver 901 and a first transmitter 902.

The first receiver 901 comprises at least one of a transmitter/receiver 454 (including an antenna 452), a receive processor 456, a multiple antenna receive processor 458, or a controller/processor 459 of fig. 4 herein; the first transmitter 902 includes at least one of the transmitter/receiver 454 (including the antenna 452), the transmit processor 468, the multi-antenna transmit processor 457, or the controller/processor 459 of fig. 4 herein.

In embodiment 9, the first receiver 901 determines a first reference value; a first transmitter 902 to transmit a first message; wherein, when the first reference value is less than a first threshold, the first message includes a first data unit and does not include a first control unit; when the first reference value is greater than the first threshold, the first message includes the first control unit and does not include the first data unit; the first control unit is used to trigger a first link connection; the count values in the first set of count values are used to determine the first reference value; any one of the first set of count values is associated with a number of random access pilot transmissions in a random access procedure occurring in a first time window; the first time window is prior to a time of transmission of the first message, the first set of count values including at least one count value.

For one embodiment, the first transmitter 902, sends a first signature sequence before the first message; and the end time of the first time window is not later than the sending time of the first characteristic sequence, and the sending of the first characteristic sequence and the sending of the first message belong to the same random access process.

For one embodiment, the first transmitter 902, transmits a second message; wherein the first reference value is less than the first threshold value; the second message includes a second data unit, the first data unit and the second data unit both being transmitted over a first radio bearer; the second data unit transmitted by the first radio bearer and the data unit except the first data unit are not sent between the time domain resource occupied by the second message and the time domain resource occupied by the first message; the first time window includes time domain resources occupied by the second message.

As an embodiment, the first receiver 901 receives a third message; wherein the third message is a response to the first message.

For one embodiment, the first receiver 901 abandons the establishment of the first link connection; wherein the first message includes the first data unit and does not include the first control unit.

As an embodiment, the first receiver 901, establishes the first link connection; the first transmitter 902, configured to transmit a first wireless signal; wherein the first message includes the first control unit and does not include the first data unit; the first wireless signal comprises the first data unit; the first wireless signal is transmitted later than the third message is received.

Example 10

Embodiment 10 illustrates a block diagram of a processing apparatus in a second node according to an embodiment of the present application, as shown in fig. 10. In fig. 10, the second node processing apparatus 1000 includes a second receiver 1001 and a second transmitter 1002.

The second receiver 1001 includes at least one of the transmitter/receiver 418 (including the antenna 420), the receive processor 470, the multiple antenna receive processor 472, or the controller/processor 475 of fig. 4 herein; the second transmitter 1002 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 10, a second receiver 1001 receives a first message; wherein a first reference value is determined; when the first reference value is less than a first threshold, the first message includes a first data unit and does not include a first control unit; when the first reference value is greater than the first threshold, the first message includes the first control unit and does not include the first data unit; the first control unit is used to trigger a first link connection; the count values in the first set of count values are used to determine the first reference value; any one of the first set of count values is associated with a number of random access pilot transmissions in a random access procedure occurring in a first time window; the first time window is prior to a time of receipt of the first message, the first set of count values including at least one count value.

As an embodiment, the second receiver 1001 receives a first signature sequence before the first message; and the end time of the first time window is not later than the receiving time of the first characteristic sequence, and the receiving of the first characteristic sequence and the receiving of the first message belong to the same random access process.

For one embodiment, the second receiver 1001 receives a second message; wherein the first reference value is less than the first threshold value; the second message includes a second data unit, the first data unit and the second data unit both being transmitted over a first radio bearer; receiving the second data unit transmitted through the first radio bearer and the data unit except the first data unit between the time domain resource occupied by the second message and the time domain resource occupied by the first message; the first time window includes time domain resources occupied by the second message.

In one embodiment, second transmitter 1002 transmits a third message in response to receiving the first message.

As an embodiment, the first link connection is abandoned from being established; wherein the first message includes the first data unit and does not include the first control unit.

As an embodiment, the first link connection is established; the second receiver 1001 receives a first wireless signal; wherein the first message includes the first control unit and does not include the first data unit; the first wireless signal comprises the first data unit; the first wireless signal is received later than the third message is transmitted.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The first Type of Communication node or UE or terminal in the present application includes, but is not limited to, a mobile phone, a tablet computer, a notebook, a network card, a low power consumption device, an eMTC (enhanced Machine Type Communication) device, an NB-IoT device, a vehicle-mounted Communication device, an aircraft, an airplane, an unmanned aerial vehicle, a remote control plane, and other wireless Communication devices. The second type of communication node, base station or network side device in this application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, an eNB, a gNB, a Transmission and Reception node TRP (Transmission and Reception Point), a relay satellite, a satellite base station, an air base station, and other wireless communication devices.

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

Claims

1. A first node configured for wireless communication, comprising:

a first receiver determining a first reference value;

a first transmitter to transmit a first message;

2. The first node of claim 1, comprising:

the first transmitter, which transmits a first signature sequence before the first message;

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

the first transmitter transmits a second message;

4. The first node of any of claims 1-3, wherein a duration of a start time of the first time window from the end time of the first time window is no greater than a second threshold.

5. The first node according to any of claims 1 to 4, comprising:

the first receiver receives a third message;

wherein the third message is a response to the first message.

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

the first receiver abandons the establishment of the first link connection;

7. The first node according to claim 4 or 5, comprising:

the first receiver is used for establishing the first link connection;

the first transmitter transmits a first wireless signal;

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

a second receiver receiving the first message;

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

determining a first reference value;

sending a first message;

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

receiving a first message;