CN114424670A

CN114424670A - Hybrid automatic repeat request state enhancement method and device thereof

Info

Publication number: CN114424670A
Application number: CN202180004663.9A
Authority: CN
Inventors: 江小威
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-04-29
Also published as: WO2023115578A1

Abstract

The embodiment of the application discloses a method and a device for enhancing the state of a hybrid automatic repeat request, which can be applied to a non-ground network system (NTN), and the method comprises the following steps: for the uplink grant UL grant associated with the uplink physical shared channel MsgA PUSCH resource in the random access request message, the terminal device does not apply the HARQ state restriction condition of the hybrid automatic repeat request state in the LCP restriction conditions when performing the logical channel selection of the logical channel priority assignment procedure LCP. By implementing the embodiment of the application, the HARQ state of the random access request message MsgA can be enhanced, the UL grant associated with the MsgA PUSCH resource can be ensured, and the use efficiency of the HARQ resource is improved.

Description

Hybrid automatic repeat request state enhancement method and device thereof

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for enhancing a hybrid automatic repeat request state in a random access request message.

Background

NTN (Non-terrestrial/terrestrial communication) is an important technology introduced by 5G, which provides radio resources through satellites (or drones) instead of ground base stations. The method can be divided into a transparent transmission mode and a regeneration mode according to the different ways of processing signals by the satellite. As shown in fig. 1, the NTN ground station sends a signal of a base station gNB to a satellite, the satellite converts the signal into a satellite frequency band and then sends the satellite frequency band to a terminal device UE, except for frequency conversion and signal amplification, the satellite does not demodulate the gNB signal, which is similar to a repeater. As shown in fig. 2, after the NTN ground station transmits the signal of the gNB to the satellite, the satellite demodulates and decodes the signal, re-encodes and modulates the signal (this process is called regeneration), and transmits the regenerated signal through the satellite frequency band.

In the NTN system, a 2-step random access procedure is supported. Since the terminal device initiates the 2-step random access procedure, the PUSCH (Physical Uplink Shared Channel) payload of MsgA only allows using HARQ process #0 (hybrid automatic repeat request process identified as 0). When the network configures HARQ status for HARQ process #0, a large limitation is imposed on using the UL grant associated with the MsgA PUSCH resource.

Disclosure of Invention

The embodiment of the application provides a method and a device for enhancing a hybrid automatic repeat request state in a random access request message, which can be applied to a non-terrestrial network NTN system and the like, can enhance the HARQ state of the random access request message MsgA, ensure that a UL grant associated with an MsgA PUSCH resource can be used, and improve the utilization efficiency of the HARQ resource.

In a first aspect, an embodiment of the present application provides a method for enhancing a hybrid automatic repeat request state in a random access request message, where the method is applied to a non-terrestrial network system, and the method is performed by a terminal device, and the method includes:

for an uplink grant UL grant associated with an uplink physical shared channel MsgA PUSCH resource in a random access request message, the terminal device does not apply a HARQ state restriction condition in a hybrid automatic repeat request state of LCP restriction conditions when selecting a logical channel of a logical channel preferred allocation procedure LCP.

In the technical scheme, the HARQ state of the random access request message MsgA can be enhanced, the UL grant associated with the MsgA PUSCH resource can be ensured to be used, and the use efficiency of the HARQ resource is improved.

In one implementation, the method further comprises: and responding to the terminal equipment to initiate a 2-step random access process, and determining a UL grant associated with the MsgA PUSCH resource.

In one implementation, the method may further include: responding to that the terminal equipment performs the logical channel selection of the LCP, and HARQ processes of hybrid automatic repeat request processes corresponding to UL grant associated with MsgA PUSCH resources do not configure HARQ states, wherein the terminal equipment does not apply HARQ state limitation conditions in the LCP limitation conditions.

In one implementation, the method further comprises:

receiving HARQ state configuration sent by network equipment; the HARQ state configuration comprises a first HARQ state configuration for a first HARQ process;

determining that the first HARQ state configuration is not applicable to a case of transmitting an uplink physical shared channel payload (MsgA) PUSCH payload in a random access request message using the first HARQ process;

in response to transmitting the MsgA PUSCH payload using the first HARQ process, determining that a HARQ process corresponding to the UL grant associated with the MsgA PUSCH resource does not configure a HARQ state.

In one possible implementation, the first HARQ process is an HARQ process identified as 0.

In one possible implementation, the HARQ state includes at least one or more of the following 1) to 3):

1) the HARQ state A is used for indicating that the length of an uplink discontinuous reception-hybrid automatic repeat request-round trip time timer drx-HARQ-RTT-TimerUL is expanded by the round trip time RTT of a network device UE-gNB of the terminal device;

2) HARQ state B, which is used to represent that the uplink discontinuous reception-hybrid automatic repeat request-round trip time timer drx-HARQ-RTT-TimerUL is not started;

3) legacy HARQ state for indicating that Legacy behavior of uplink drx-HARQ-RTT-timerll is applicable.

In a second aspect, an embodiment of the present application provides another method for enhancing a hybrid automatic repeat request status in a random access request message, where the method is applied to a non-terrestrial network system, and the method is performed by a network device, and the method includes: sending HARQ state configuration of a hybrid automatic repeat request state to terminal equipment; the HARQ state configuration comprises a first HARQ state configuration for a first hybrid automatic repeat request process HARQ process;

wherein the first HARQ state is configured to indicate that the terminal device considers that the first HARQ state configuration is not applicable to a case where the first HARQ process is used to transmit an uplink physical shared channel payload MsgA PUSCH payload in a random access request message, and does not apply a HARQ state restriction condition in a logical channel priority assignment procedure LCP restriction condition.

In one implementation, the first HARQ process is an HARQ process identified as 0.

In a third aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus has a function of implementing part or all of the functions of the terminal device in the method according to the first aspect, for example, the function of the communication apparatus may have the functions in part or all of the embodiments in the present application, or may have the functions of implementing any one of the embodiments in the present application separately. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

In one implementation, the communication device may include a transceiver module and a processing module configured to support the communication device to perform the corresponding functions of the above method. The transceiver module is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory module for coupling with the transceiver module and the processing module, which holds computer programs and data necessary for the communication device.

As an example, the processing module may be a processor, the transceiver module may be a transceiver or a communication interface, and the storage module may be a memory.

In a fourth aspect, the present invention provides another communication apparatus, where the communication apparatus has some or all of the functions of the network device in the method example described in the second aspect, for example, the functions of the communication apparatus may have the functions in some or all of the embodiments in the present application, or may have the functions of implementing any of the embodiments in the present application separately. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

In one implementation, the communication device may include a transceiver module and a processing module configured to support the communication device to perform the corresponding functions of the method. The transceiver module is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory module for coupling with the transceiver module and the processing module, which holds computer programs and data necessary for the communication device.

In a fifth aspect, an embodiment of the present application provides a communication device, which includes a processor, and when the processor calls a computer program in a memory, the processor performs the method according to the first aspect.

In a sixth aspect, an embodiment of the present application provides a communication device, which includes a processor, and when the processor calls a computer program in a memory, the processor executes the method according to the second aspect.

In a seventh aspect, an embodiment of the present application provides a communication apparatus, including a processor and a memory, where the memory stores a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the first aspect.

In an eighth aspect, an embodiment of the present application provides a communication apparatus, including a processor and a memory, where the memory stores a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the second aspect.

In a ninth aspect, embodiments of the present application provide a communication device, which includes a processor and an interface circuit, where the interface circuit is configured to receive code instructions and transmit the code instructions to the processor, and the processor is configured to execute the code instructions to cause the device to perform the method according to the first aspect.

In a tenth aspect, an embodiment of the present application provides a communication apparatus, which includes a processor and an interface circuit, where the interface circuit is configured to receive code instructions and transmit the code instructions to the processor, and the processor is configured to execute the code instructions to cause the apparatus to perform the method according to the second aspect.

In an eleventh aspect, an embodiment of the present invention provides a system for enhancing a hybrid automatic repeat request state in a random access request message, where the system includes the communication apparatus of the third aspect and the communication apparatus of the fourth aspect, or the system includes the communication apparatus of the fifth aspect and the communication apparatus of the sixth aspect, or the system includes the communication apparatus of the seventh aspect and the communication apparatus of the eighth aspect, or the system includes the communication apparatus of the ninth aspect and the communication apparatus of the tenth aspect.

In a twelfth aspect, an embodiment of the present invention provides a computer-readable storage medium, configured to store instructions for the terminal device, where the instructions, when executed, cause the terminal device to perform the method according to the first aspect.

In a thirteenth aspect, an embodiment of the present invention provides a readable storage medium for storing instructions for the network device, where the instructions, when executed, cause the network device to perform the method of the second aspect.

In a fourteenth aspect, the present application also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

In a fifteenth aspect, the present application also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the second aspect described above.

In a sixteenth aspect, the present application provides a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

In a seventeenth aspect, the present application provides a computer program which, when run on a computer, causes the computer to perform the method of the second aspect described above.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.

Fig. 1 is a first exemplary diagram illustrating a manner in which a satellite processes signals in an NTN network according to an embodiment of the present application;

fig. 2 is a second exemplary diagram illustrating a manner in which a satellite processes signals in an NTN network according to an embodiment of the present application;

fig. 3 is a flowchart illustrating a 4-step random access procedure and a 2-step random access procedure;

fig. 4 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 5 is a flowchart of a method for enhancing HARQ state in a random access request message MsgA according to an embodiment of the present application;

fig. 6 is a flowchart of another HARQ state enhancement method for a hybrid automatic repeat request state in a random access request message MsgA according to an embodiment of the present application;

fig. 7 is a flowchart of a method for enhancing a hybrid automatic repeat request status in a random access request message according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar designations denote like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. Where in the description of the present application, "/" indicates an OR meaning, for example, A/B may indicate A or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.

It should be noted that NTN (Non-terrestrial/terrestrial communication) is an important technology introduced by 5G, and provides radio resources through satellite (or unmanned aerial vehicle) instead of ground base station. The method can be divided into a transparent transmission mode and a regeneration mode according to the different ways of processing signals by the satellite. As shown in fig. 1, the NTN ground station sends a signal of a base station gNB to a satellite, the satellite converts the signal into a satellite frequency band and then sends the satellite frequency band to a terminal device UE, except for frequency conversion and signal amplification, the satellite does not demodulate the gNB signal, which is similar to a repeater. As shown in fig. 2, after the NTN ground station transmits the signal of the gNB to the satellite, the satellite demodulates and decodes the signal, re-encodes and modulates the signal (this process is called regeneration), and transmits the regenerated signal through the satellite frequency band.

In the NTN system, a 2-Step random access procedure (2-Step RA) is supported. As shown in fig. 3 (a) and (b), for a 2-Step RA, MsgA is composed of a preamble and a (Physical Uplink Shared Channel) payload, which is equivalent to Msg1+ Msg3 of a 4-Step random access procedure (4-Step RA); MsgB for 2-Step RA corresponds to Msg2+ Msg4 for 4-Step RA.

When the terminal device performs a 2-step random access process, a PUSCH occasion is first selected for a payload of the MsgA, and then uplink grant UL grant and HARQ (Hybrid Automatic Repeat reQuest) information of the MsgA payload are determined based on the selected PUSCH occasion. When MsgA PUSCH payload is transmitted uplink, only HARQ process #0 (hybrid automatic repeat request process identified as 0) is currently allowed to be used. The PUSCH resources used by the PUSCH payload of MsgA are configured by the network.

It should be noted that, up to 32 HARQ processes may be configured for one serving cell of one terminal device, where a part of HARQ processes is used for Dynamic grant (Dynamic grant), and a part of HARQ processes is used for configured grant (configured grant). For NTN, one HARQ process may be configured in multiple states (i.e., the parameter uplink HARQ-DRX-LCP-Mode-r17 currently used in 3GPP discussion):

HARQ state A：length of drx-HARQ-RTT-TimerUL is extended by UE-gNB RTT(i.e.UE PDCCH monitoring is optimized to support UL retransmission grant based on UL decoding result).

HARQ state B：drx-HARQ-RTT-TimerUL is not started.

if the state is not configured, the state is legacy HARQ state:

Legacy HARQ state:Legacy behavior of drx-HARQ-RTT-TimerUL applies.

wherein, the defined Chinese meaning of the HARQ state A is as follows: the length of the uplink discontinuous reception-hybrid automatic repeat request-round trip time timer drx-HARQ-RTT-timerll is extended by the network equipment UE-gNB round trip time RTT of the terminal equipment (UE physical downlink control channel PDCCH monitoring is optimized to support UL retransmission grant based on uplink UL decoding result). The defined Chinese meaning of the HARQ state B is as follows: the uplink drx-HARQ-RTT-timerll is not started. And if the state is not configured, the state is legacy HARQ state. Wherein, the defined Chinese meaning of the Legacy HARQ state is: the legacy behavior of uplink drx-HARQ-RTT-timerll is applicable.

Note that, the HARQ state a performs retransmission scheduling based on the decoding result of the PUSCH data in response to the base station, and the HARQ state B performs retransmission scheduling not based on the decoding result of the PUSCH data in response to the base station. And for Legacy HARQ state, the retransmission scheduling is carried out on the decoding result which is not based on the PUSCH data corresponding to the base station.

It should be further noted that, LCP (local channel priority assignment) is used for determining the priority of each logical channel after the terminal device receives the UL grant. LCP supports the following defined parameters 1) to 6):

1) allowedSCS-List while sets the allowed Subcarrier Spacing(s) for transmission (an allowed List of allowed transmission Subcarrier intervals is used to set the allowed transmission Subcarrier intervals);

2) maxPUSCH-Duration periods the maximum PUSCH Duration allowed for transmission (setting the maximum PUSCH Duration allowed for transmission for the maximum PUSCH Duration allowed for transmission);

3) configurable GrantType1Allowed visited places where a configurable grant Type 1can be used for transmission (configuration grant Type is Allowed to set whether the configured grant Type1 is available for transmission);

4) allowedServingCells while sets the allowedcells(s) for transmission (the allowed Services cells of the cell which allows setting of transmission are used for setting the cells which allow transmission);

5) allowedCG-List while sets the allowed configured grant(s) for transmission (the AuthEdcg List of the allowed configured licenses of allowed transmission is used to set the configuration authorization of allowed transmission);

6) allowed PHY-priority index periods of the allowed PHY priority index (es) of a dynamic grant for transmission (allowed PHY priority index for transmission dynamic grant).

Meanwhile, NTN further introduces a new LCP restriction parameter: UL HARQ retransmission state (also referred to above as HARQ state a, B, legacy). The above parameters may be configured for each logical channel separately. For LCP, when the terminal device selects a logical channel that can use a certain UL grant resource, the logical channel needs to satisfy the LCP restriction condition.

However, due to the initiation of the 2-step random access procedure, the PUSCH (Physical Uplink Shared Channel) payload of MsgA only allows the use of HARQ process #0 (hybrid automatic repeat request process identified as 0). When the network configures one HARQ state for HARQ process #0, it means that the UL grant associated with the MsgA PUSCH resource can be used only when the HARQ state of LCP of the logical channel coincides with the HARQ state of HARQ process #0, which brings a large limitation.

Based on the above problem, the present application provides a method for enhancing a hybrid automatic repeat request state in a random access request message, which ensures that a UL grant associated with an MsgA PUSCH resource can be used by enhancing a HARQ state of the random access request message MsgA, and improves HARQ resource utilization efficiency.

In order to better understand the method for enhancing the harq status in the random access request message disclosed in the embodiment of the present application, first, a communication system used in the embodiment of the present application is described below.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure. The communication system may include, but is not limited to, one base station, one satellite, one ground station and one terminal device, the number and form of the devices shown in fig. 4 are only used as examples and do not constitute a limitation to the embodiments of the present application, and two or more base stations, satellites, ground stations and terminal devices may be included in practical applications. The communication system shown in fig. 4 may include, for example, a base station 110, a satellite 120, a ground station 130, and a terminal device 140.

The terminal device 140 in the embodiment of the present application is an entity, such as a mobile phone, on the user side for receiving or transmitting signals. A terminal device may also be referred to as a terminal device (terminal), a User Equipment (UE), a Mobile Station (MS), a mobile terminal device (MT), etc. The terminal device may be a vehicle having a communication function, a smart vehicle, a mobile phone (mobile phone), a wearable device, a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving (self-driving), a wireless terminal device in remote surgery (remote medical supply), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), and the like. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal device.

It should be noted that the technical solution of the embodiment of the present application may be applied to an NTN communication system. NTN is an important technology introduced by 5G, which provides radio resources through satellites (or drones) rather than ground base stations. The method can be divided into a transparent transmission mode and a regeneration mode according to the different ways of processing signals by the satellite. As shown in fig. 1, the NTN ground station transmits a signal of a gNB (base station) to a satellite, the satellite converts the signal into a satellite frequency band and then transmits the satellite frequency band to a terminal device UE, except for frequency conversion and signal amplification, the satellite does not demodulate the gNB signal, which is similar to a repeater. As shown in fig. 2, after the NTN ground station transmits the signal of the gNB to the satellite, the satellite demodulates and decodes the signal, re-encodes and modulates the signal (this process is called regeneration), and transmits the regenerated signal through the satellite frequency band.

It is to be understood that the communication system described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation to the technical solution provided in the embodiment of the present application, and as a person having ordinary skill in the art knows that along with the evolution of the system architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

The method for enhancing harq status in a random access request message and the apparatus thereof provided by the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 5, fig. 5 is a flowchart of a method for enhancing HARQ state in a random access request message MsgA according to an embodiment of the present application. It should be noted that the HARQ state enhancement method in the MsgA of the embodiment of the present application may be performed by the terminal device, that is, the HARQ state enhancement method in the MsgA of the embodiment of the present application may be described from the terminal device side. As shown in fig. 5, the enhancement method may include, but is not limited to, the following steps.

In step 501, for the uplink grant UL grant associated with the uplink physical shared channel MsgA PUSCH resource in the random access request message, the terminal device does not apply the HARQ state restriction condition of the hybrid automatic repeat request state in the LCP restriction conditions when performing the logical channel selection of the logical channel priority assignment procedure LCP.

That is, the HARQ state restriction condition in the LCP restriction condition is not applied to the uplink grant UL grant associated with the MsgA PUSCH resource.

In one implementation, a UL grant associated with an MsgA PUSCH resource is determined in response to a terminal device initiating a 2-step random access procedure. For the UL grant associated with the MsgA PUSCH resource, the terminal device does not apply the HARQ state restriction condition in the LCP restriction condition when selecting the logical channel of the LCP.

That is, after the terminal device initiates the 2-step random access procedure and determines the UL grant associated with the MsgA PUSCH resource, the terminal device may not apply the HARQ state restriction condition in the LCP restriction condition when performing logical channel selection for LCP in order to ensure that the UL grant associated with the MsgA PUSCH resource can be used. Wherein, it can be understood that the HARQ state restriction condition is a new LCP restriction parameter introduced in the NTN system.

In an embodiment of the application, the HARQ state comprises at least one or more of the following 1) to 3):

2) HARQ state B, HARQ state B is used for representing that the uplink discontinuous reception-hybrid automatic repeat request-round trip time timer drx-HARQ-RTT-TimerUL is not started;

3) legacy HARQ state, Legacy HARQ state used to indicate uplink discontinuous reception-hybrid automatic repeat request-round trip time timer drx-HARQ-RTT-timerll is applicable.

Wherein, the HARQ state a performs retransmission scheduling corresponding to the decoding result of the PUSCH data based on the base station, and the HARQ state B performs retransmission scheduling corresponding to the decoding result of the PUSCH data not based on the base station. And for Legacy HARQ state, the retransmission scheduling is carried out on the decoding result which is not based on the PUSCH data corresponding to the base station.

For example, due to the initiation of a 2-step random access procedure, the PUSCH payload of MsgA is only allowed to use HARQ process #0 (hybrid automatic repeat request process identified as 0). When the network configures one HARQ state (such as one of the above HARQ state a, HARQ state B, and Legacy HARQ state) for HARQ process #0, in order to ensure that the UL grant associated with the MsgA PUSCH resource can be used, the terminal device may not apply the HARQ state restriction condition in the LCP restriction condition when performing logical channel selection for LCP, that is, the terminal device does not apply the HARQ state restriction condition in the LCP restriction condition to select a logical channel that can use the UL grant resource when selecting the logical channel, so that the selected logical channel can use the UL grant associated with the MsgA PUSCH resource.

By implementing the embodiment of the application, the HARQ state of the random access request message MsgA is enhanced, the UL grant associated with the MsgA PUSCH resource can be ensured, and the use efficiency of the HARQ resource is improved.

Referring to fig. 6, fig. 6 is a flowchart of another HARQ state enhancement method for a random access request message MsgA according to an embodiment of the present application. It should be noted that the HARQ state enhancement method in the MsgA of the embodiment of the present application may be performed by the terminal device, that is, the HARQ state enhancement method in the MsgA of the embodiment of the present application may be described from the terminal device side. As shown in fig. 6, the enhancement method may include, but is not limited to, the following steps.

In step 601, in response to that the terminal device is performing logical channel selection for LCP and that the HARQ process corresponding to the UL grant associated with the MsgA PUSCH resource does not configure HARQ state, the terminal device does not apply the HARQ state restriction condition in the LCP restriction conditions.

Optionally, when the terminal device performs logical channel selection for LCP, if HARQ process corresponding to UL grant associated with the MsgA PUSCH resource does not configure HARQ state, the terminal device may not apply HARQ state restriction condition in the LCP restriction condition.

In the embodiment of the present application, the HARQ process corresponding to the UL grant associated with the MsgA PUSCH resource does not have the HARQ state configured, and it can be understood that: the terminal device considers that the HARQ state configuration for the HARQ process issued by the network device is not applicable. For example, the terminal device may consider that the received HARQ state configuration for the HARQ process issued by the network is not applicable to the case of using HARQ process 0 to transmit the MsgA PUSCH payload. At this time, in the case of transmitting MsgA PUSCH payload using HARQ process 0, the terminal device considers that HARQ process 0m is not configured with HARQ state.

In one implementation manner, the terminal device receives a HARQ state configuration sent by the network device, where the HARQ state configuration includes a first HARQ state configuration for a first HARQ process. The terminal device may consider that the first HARQ state configuration is not applicable to the case of using the first HARQ process to transmit the uplink physical shared channel payload MsgA PUSCH payload in the random access request message. In response to transmitting the MsgA PUSCH payload using the first HARQ process, determining that the HARQ process corresponding to the UL grant associated with the MsgA PUSCH resource does not configure a HARQ state. Here, in the embodiment of the present application, the first HARQ process may be understood as an HARQ process identified as 0.

For example, the terminal device receives the HARQ state configuration sent by the network device, which includes the HARQ state configuration for the first HARQ process (i.e. the HARQ process identified as 0, which may be denoted as HARQ process 0). The terminal device may consider that the HARQ state configuration for the first HARQ process is not applicable to the case of transmitting MsgA PUSCH payload using the first HARQ process. At this time, for the case of transmitting the MsgA PUSCH payload using the first HARQ process, the terminal device considers that the first HARQ process is not configured with the HARQ state (i.e., adopts legacy HARQ bearer). When the terminal device selects the logical channel of the LCP, if the HARQ process corresponding to the UL grant does not configure the HARQ state, the terminal device does not apply the HARQ state restriction condition in the LCP restriction conditions.

Wherein, it can be understood that the HARQ state restriction condition is a new LCP restriction parameter introduced in the NTN system.

For example, due to the initiation of a 2-step random access procedure, the PUSCH payload of MsgA only allows the use of HARQ process 0 (hybrid automatic repeat request process identified as 0). When the terminal device receives the HARQ state (for example, one of the HARQ state a, the HARQ state B, and the Legacy HARQ state) for the HARQ process 0 sent by the network device, in order to ensure that the UL grant associated with the MsgA PUSCH resource can be used, the terminal device may consider that the HARQ state configuration for the HARQ process 0 sent by the network device is not applicable to the case of transmitting the MsgA PUSCH payload using the HARQ process 0. At this time, for the case of transmitting the MsgA PUSCH payload using HARQ process 0, the terminal device may consider that HARQ process 0 has no HARQ state configured (that is, legacy HARQ bearer is adopted). When the terminal device selects the logical channel of the LCP, if the HARQ process corresponding to the UL grant does not configure the HARQ state, the HARQ state restriction condition in the LCP restriction condition is not applied, that is, when the terminal device selects the logical channel that can use the UL grant resource, the HARQ state restriction condition in the LCP restriction condition is not applied to select the logical channel, so that the selected logical channel can use the UL grant associated with the MsgA PUSCH resource.

It can be understood that the foregoing embodiments describe, from the terminal device side, implementation manners of the hybrid automatic repeat request state enhancing method in the random access request message according to the embodiments of the present application. The embodiment of the present application further provides a method for enhancing a hybrid automatic repeat request state in a random access request message, and an implementation manner of the method for enhancing the hybrid automatic repeat request state in the random access request message will be described below from a network device side. Referring to fig. 7, fig. 7 is a flowchart of a method for enhancing a hybrid automatic repeat request status in a random access request message according to another embodiment of the present application. It should be noted that the hybrid automatic repeat request state enhancement method in the random access request message according to the embodiment of the present application may be applied to a non-terrestrial network system, which may be executed by a network device. As shown in fig. 7, the enhancement method may include, but is not limited to, the following steps.

In step 701, a HARQ state configuration of a hybrid automatic repeat request state is sent to a terminal device; the HARQ state configuration comprises a first HARQ state configuration for a first hybrid automatic repeat request process, HARQ process.

In the embodiment of the present application, the first HARQ state configuration is configured to instruct the terminal device to consider that the first HARQ state configuration is not applicable to a case where the uplink physical shared channel payload MsgA PUSCH payload in the random access request message is transmitted by using the first HARQ process, and the HARQ state restriction condition in the logical channel priority assignment procedure LCP restriction condition is not applied.

In the embodiment of the present application, the first HARQ process may be understood as an HARQ process identified as 0.

Wherein, in the embodiment of the present application, the HARQ state at least includes one or more of the following 1) to 3):

In one implementation, the network device may send the HARQ state configuration to the terminal device, and the HARQ state configuration may include the HARQ state configuration for HARQ process 0 (i.e., the first HARQ process, i.e., the HARQ process identified as 0). The terminal device considers that this configuration is not applicable to the case of transmitting MsgA PUSCH payload using HARQ process 0. At this time, when the MsgA PUSCH payload is transmitted using HARQ process 0, the terminal device considers that HARQ process 0 has no HARQ state (that is, legacy HARQ bearer is used). When the terminal device selects the logical channel of the LCP, if the HARQ process corresponding to the UL grant does not configure the HARQ state, the HARQ state restriction condition in the LCP restriction conditions is not applied.

In the embodiments provided in the present application, the methods provided in the embodiments of the present application are introduced from the perspective of the terminal device and the network device, respectively. In order to implement the functions in the method provided by the embodiment of the present application, the terminal device and the network device may include a hardware structure and a software module, and the functions are implemented in the form of a hardware structure, a software module, or a hardware structure and a software module. Some of the above functions may be implemented by a hardware structure, a software module, or a hardware structure plus a software module.

Please refer to fig. 8, which is a schematic structural diagram of a communication device 80 according to an embodiment of the present disclosure. The communication device 80 may be a communication device used in a non-terrestrial network system. The communication device 80 shown in fig. 8 may include a transceiver module 801 and a processing module 802. The transceiver module 801 may include a transmitting module and/or a receiving module, where the transmitting module is used to implement a transmitting function, the receiving module is used to implement a receiving function, and the transceiver module 801 may implement a transmitting function and/or a receiving function.

The communication device 80 may be a terminal device, may be a device in a terminal device, or may be a device that can be used in cooperation with a terminal device. Alternatively, the communication device 80 may be a network device, may be a device in a network device, or may be a device that can be used in cooperation with a network device.

The communication device 80 is a terminal apparatus: the processing module 802 is configured to not apply the HARQ state restriction condition of the HARQ state in the LCP restriction condition when the terminal device performs the logical channel selection of the logical channel preferred allocation procedure LCP for the uplink grant UL grant associated with the uplink physical shared channel MsgA PUSCH resource in the random access request message.

In one implementation, the processing module 802 is further configured to: and responding to the terminal equipment to initiate a 2-step random access process, and determining a UL grant associated with the MsgA PUSCH resource.

In one implementation, the processing module is configured to: and in response to that the terminal equipment performs logical channel selection of LCP and the HARQ process corresponding to the UL grant associated with the MsgA PUSCH resource does not configure HARQ state, the terminal equipment does not apply the HARQ state restriction condition in the LCP restriction conditions.

In a possible implementation manner, the transceiver module 801 is configured to receive a HARQ state configuration sent by a network device; the HARQ state configuration comprises a first HARQ state configuration for a first HARQ process; wherein, the processing module 802 is further configured to determine that the first HARQ state configuration is not applicable to a case where the first HARQ process is used to transmit an uplink physical shared channel payload MsgA PUSCH payload in the random access request message; the processing module 802 is further configured to determine that HARQ process corresponding to the UL grant associated with the MsgA PUSCH resource does not configure HARQ state in response to transmitting the MsgA PUSCH payload using the first HARQ process.

In the embodiment of the present application, the first HARQ process is an HARQ process identified as 0.

The communication device 80 is a network device: the transceiving module 801 is configured to send HARQ state configuration of a hybrid automatic repeat request state to a terminal device; the HARQ state configuration comprises a first HARQ state configuration for a first hybrid automatic repeat request process HARQ process;

in the embodiment of the present application, the first HARQ state configuration is configured to instruct the terminal device to consider that the first HARQ state configuration is not applicable to a case where the uplink physical shared channel payload MsgA PUSCH payload in the random access request message is transmitted by using the first HARQ process, and the HARQ state restriction condition in the logical channel priority assignment procedure LCP restriction condition is not applied. In one implementation, the first HARQ process is an HARQ process identified as 0.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Referring to fig. 9, fig. 9 is a schematic structural diagram of another communication device 90 according to an embodiment of the present disclosure. The communication device 90 may be a network device, a terminal device, a chip, a system-on-chip, or a processor that supports the network device to implement the method, or a chip, a system-on-chip, or a processor that supports the terminal device to implement the method. The apparatus may be configured to implement the method described in the method embodiment, and refer to the description in the method embodiment.

The communication device 90 may include one or more processors 901. The processor 901 may be a general purpose processor or a special purpose processor, etc. For example, a baseband processor or a central processor. The baseband processor may be configured to process communication protocols and communication data, and the central processor may be configured to control a communication device (e.g., a base station, a baseband chip, a terminal device chip, a DU or CU, etc.), execute a computer program, and process data of the computer program.

Optionally, the communication device 90 may further include one or more memories 902, on which a computer program 904 may be stored, and the processor 901 executes the computer program 904, so as to enable the communication device 90 to execute the method described in the above method embodiments. Optionally, the memory 902 may further store data therein. The communication device 90 and the memory 902 may be provided separately or may be integrated together.

Optionally, the communication device 90 may further include a transceiver 905 and an antenna 906. The transceiver 905 may be referred to as a transceiving unit, a transceiver, or a transceiving circuit, etc. for implementing a transceiving function. The transceiver 905 may include a receiver and a transmitter, and the receiver may be referred to as a receiver or a receiving circuit, etc. for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmission circuit, etc. for implementing the transmission function.

Optionally, one or more interface circuits 907 may also be included in communications device 90. Interface circuit 907 is used to receive code instructions and transmit them to processor 901. The processor 901 executes the code instructions to cause the communication device 90 to perform the methods described in the above method embodiments.

The communication device 90 is a terminal apparatus: processor 901 is configured to perform step 501 in fig. 5; step 601 in fig. 6 is performed.

The communication device 90 is a network device: the transceiver 905 is used to perform step 701 in fig. 7.

In one implementation, the processor 901 may include a transceiver for implementing receiving and transmitting functions. The transceiver may be, for example, a transceiver circuit, or an interface circuit. The transmit and receive circuitry, interfaces or interface circuitry used to implement the receive and transmit functions may be separate or integrated. The transceiver circuit, the interface circuit or the interface circuit may be used for reading and writing code/data, or the transceiver circuit, the interface circuit or the interface circuit may be used for transmitting or transferring signals.

In one implementation, the processor 901 may store a computer program 903, and the computer program 903 runs on the processor 901, and may cause the communication apparatus 90 to execute the method described in the above method embodiment. The computer program 903 may be solidified in the processor 901, in which case the processor 901 may be implemented by hardware.

In one implementation, the communication device 90 may include circuitry that may implement the functionality of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described herein may be implemented on Integrated Circuits (ICs), analog ICs, Radio Frequency Integrated Circuits (RFICs), mixed signal ICs, Application Specific Integrated Circuits (ASICs), Printed Circuit Boards (PCBs), electronic devices, and the like. The processor and transceiver may also be fabricated using various IC process technologies, such as Complementary Metal Oxide Semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (PMOS), Bipolar Junction Transistor (BJT), bipolar CMOS (bicmos), silicon germanium (SiGe), gallium arsenide (GaAs), and the like.

The communication apparatus in the above description of the embodiment may be a network device or a terminal device, but the scope of the communication apparatus described in the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 9. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication means may be:

(1) a stand-alone integrated circuit IC, or chip, or system-on-chip or subsystem;

(2) a set of one or more ICs, which optionally may also include storage means for storing data, computer programs;

(3) an ASIC, such as a Modem (Modem);

(4) a module that may be embedded within other devices;

(5) receivers, terminal devices, smart terminal devices, cellular phones, wireless devices, handsets, mobile units, in-vehicle devices, network devices, cloud devices, artificial intelligence devices, and the like;

(6) others, and so forth.

Those skilled in the art will also appreciate that the various illustrative logical blocks and steps (step) set forth in the embodiments of the present application may be implemented in electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

The embodiment of the present application further provides a system for determining a side link length, where the system includes the communication apparatus serving as the terminal device and the communication apparatus serving as the network device in the foregoing embodiment of fig. 8, or the system includes the communication apparatus serving as the terminal device and the communication apparatus serving as the network device in the foregoing embodiment of fig. 9.

The present application also provides a readable storage medium having stored thereon instructions which, when executed by a computer, implement the functionality of any of the above-described method embodiments.

The present application also provides a computer program product which, when executed by a computer, implements the functionality of any of the above-described method embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer program is loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer program can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

Those of ordinary skill in the art will understand that: the various numbers of the first, second, etc. mentioned in this application are only used for the convenience of description and are not used to limit the scope of the embodiments of this application, but also to indicate the sequence.

At least one of the present applications may also be described as one or more, and a plurality may be two, three, four or more, and the present application is not limited thereto. In the embodiment of the present application, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "a", "B", "C", and "D", and the like, and the technical features described in "first", "second", "third", "a", "B", "C", and "D" are not in a sequential order or a size order.

The correspondence shown in the tables in the present application may be configured or predefined. The values of the information in each table are only examples, and may be configured to other values, which is not limited in the present application. When the correspondence between the information and each parameter is configured, it is not always necessary to configure all the correspondences indicated in each table. For example, in the table in the present application, the correspondence shown in some rows may not be configured. For another example, appropriate modification adjustments, such as splitting, merging, etc., can be made based on the above tables. The names of the parameters in the tables may be other names understandable by the communication device, and the values or the expression of the parameters may be other values or expressions understandable by the communication device. When the above tables are implemented, other data structures may be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables may be used.

Predefinition in this application may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-firing.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for enhancing hybrid automatic repeat request state in a random access request message, the method being applied to a non-terrestrial network system, the method being performed by a terminal device, the method comprising:

2. The method of claim 1, further comprising:

and responding to the terminal equipment to initiate a 2-step random access process, and determining a UL grant associated with the MsgA PUSCH resource.

3. The method of claim 1, further comprising:

responding to that the terminal equipment performs the logical channel selection of the LCP, and HARQ processes of hybrid automatic repeat request processes corresponding to UL grant associated with MsgA PUSCH resources do not configure HARQ states, wherein the terminal equipment does not apply HARQ state limitation conditions in the LCP limitation conditions.

4. The method of claim 3, further comprising:

5. The method of claim 4, wherein the first HARQ process is an HARQ process identified as 0.

6. The method according to any of claims 1 to 4, wherein the HARQ state comprises at least one or more of the following 1) to 3):

7. A method for enhancing status of hybrid automatic repeat request in random access request message, the method being applied to a non-terrestrial network system, the method being performed by a network device, the method comprising:

sending HARQ state configuration of a hybrid automatic repeat request state to terminal equipment; the HARQ state configuration comprises a first HARQ state configuration for a first hybrid automatic repeat request process HARQ process;

8. The method of claim 7, wherein the first HARQ process is a HARQ process identified as 0.

9. The method according to claim 7 or 8, wherein the HARQ state comprises at least one or more of the following 1) to 3):

10. A communications apparatus for use in a non-terrestrial network system, comprising:

and the processing module is used for not applying the HARQ state limiting condition of the hybrid automatic repeat request state in the LCP limiting conditions when the terminal equipment selects the logic channel of the LCP in the logic channel preferential allocation process for the uplink grant UL grant associated with the MsgA PUSCH resource in the random access request message.

11. The communications apparatus of claim 10, wherein the processing module is further configured to:

12. The communications apparatus of claim 10, wherein the processing module is further configured to:

13. The communications device of claim 12, further comprising:

the receiving and sending module is used for receiving HARQ state configuration sent by the network equipment; the HARQ state configuration comprises a first HARQ state configuration for a first HARQ process;

wherein the processing module is further configured to determine that the first HARQ state configuration is not applicable to a case where the first HARQ process is used to transmit an uplink physical shared channel payload MsgA PUSCH payload in a random access request message;

the processing module is further configured to determine, in response to a situation that the MsgA PUSCH payload is transmitted by using the first HARQ process, that the HARQ process corresponding to the UL grant associated with the MsgA PUSCH resource is not configured with a HARQ state.

14. The communications apparatus of claim 13, wherein the first HARQ process is a HARQ process identified as 0.

15. The communication apparatus according to any of claims 10 to 14, wherein the HARQ state comprises at least one or more of the following 1) to 3):

16. A communications apparatus for use in a non-terrestrial network system, comprising:

a transceiving module, configured to send HARQ state configuration of a hybrid automatic repeat request state to a terminal device; the HARQ state configuration comprises a first HARQ state configuration for a first hybrid automatic repeat request process HARQ process;

17. The communications apparatus of claim 16, wherein the first HARQ process is a HARQ process identified as 0.

18. The communication apparatus according to claim 16 or 17, wherein the HARQ state comprises at least one or more of the following 1) to 3):

19. A communications device, comprising a processor and a memory, the memory having stored therein a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method of any of claims 1 to 6.

20. A communication apparatus, comprising a processor and a memory, the memory having a computer program stored therein, the processor executing the computer program stored in the memory to cause the apparatus to perform the method of any of claims 7-9.

21. A computer readable storage medium storing instructions that, when executed, cause a method as recited in any of claims 1-6 to be implemented.

22. A computer readable storage medium storing instructions that, when executed, cause a method as claimed in any of claims 7 to 9 to be implemented.