CN115915497A

CN115915497A - Transmission processing method and device and terminal equipment

Info

Publication number: CN115915497A
Application number: CN202111162310.XA
Authority: CN
Inventors: 朱敏; 王俊伟
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-04-04

Abstract

The invention provides a transmission processing method, a transmission processing device and terminal equipment, and relates to the technical field of communication. The method comprises the following steps: based on the receiving condition of the first information, performing transmission processing of data scheduled by a first Physical Downlink Control Channel (PDCCH); wherein the first information comprises: an activation command of a semi-persistent scheduling physical downlink shared channel (SPS) PDSCH or a second PDCCH for scheduling SPS PDSCH retransmission; the first PDCCH is used for scheduling PDSCH common to semi-persistent scheduling groups, and the first PDCCH is scrambled by a multicast semi-static radio network temporary identifier G-CS-RNTI. According to the scheme, after the first PDCCH for scheduling the PDSCH common to the semi-persistent scheduling group is received, the data transmission processing is carried out according to the receiving condition of the first information, the condition that the terminal cannot accurately process the information during multicast or broadcast communication can be avoided, and therefore the data transmission accuracy is guaranteed.

Description

Transmission processing method and device and terminal equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a transmission processing method and apparatus, and a terminal device.

Background

In the current fifth generation New Radio (NR) system, when a terminal receives a Physical Downlink Control Channel (PDCCH) retransmitted by a Physical Downlink Shared Channel (PDSCH), the terminal combines the received information with the previously received buffered data of a Hybrid Automatic Repeat reQuest (HARQ) process. The problems that exist at present are: in the existing unicast transmission, the base station transmits a PDCCH for Scheduling a retransmission of an SPS-PDSCH only after the terminal receives a Semi-Persistent Scheduling (SPS) activation command for initial transmission and feeds back a non-acknowledgement (NACK). However, in multicast or broadcast communication, some terminals only receive the PDCCH for scheduling SPS-PDSCH retransmission and do not receive the SPS activation command initially transmitted, in which case the terminal still combines the received information with the data buffered by the related HARQ process, which may cause a problem of data combination error.

Disclosure of Invention

Embodiments of the present invention provide a transmission processing method, an apparatus, and a terminal device, to solve the problem that in multicast or broadcast communication, some terminals only receive a PDCCH for scheduling SPS-PDSCH retransmission and do not receive an SPS activation command that is initially transmitted, and in this case, the terminal still combines received information with data buffered in a previous related HARQ process, resulting in data combination errors and failure to ensure data transmission accuracy.

In order to solve the foregoing technical problem, an embodiment of the present invention provides a transmission processing method, executed by a terminal device, including:

performing transmission processing of data scheduled by a first Physical Downlink Control Channel (PDCCH) based on the receiving condition of the first information;

wherein the first information comprises: an activation command of a semi-persistent scheduling physical downlink shared channel (SPS) PDSCH or a second PDCCH for scheduling SPS PDSCH retransmission;

the first PDCCH is used for scheduling PDSCH common to semi-persistent scheduling groups, and the first PDCCH is scrambled by a multicast semi-static radio network temporary identifier G-CS-RNTI.

Optionally, when a new data indicator NDI included in the first PDCCH takes a value of 1, the performing, based on a reception condition of the first information, transmission processing of data scheduled by the first physical downlink control channel PDCCH includes:

and under the condition that the terminal does not receive the first information before receiving the first PDCCH, determining that the NDI of the data transmission scheduled by the first PDCCH is reversed and/or the data scheduled by the first PDCCH is newly transmitted data.

and under the condition that the terminal receives the first information before receiving the first PDCCH, determining that the NDI of the data transmission scheduled by the first PDCCH is not inverted and/or the data scheduled by the first PDCCH is retransmission data.

Optionally, when a new data indication NDI included in the first PDCCH takes a value of 1, the performing, based on a reception condition of the first information, transmission processing of data scheduled by a first physical downlink control channel PDCCH includes at least one of:

determining that the NDI of data transmission scheduled by the first PDCCH is not inverted and/or data scheduled by the first PDCCH is retransmission data under the condition that the terminal receives the first information before receiving the first PDCCH and PDSCH feedback for SPS PDSCH retransmission is not confirmed before receiving the first PDCCH;

and determining not to receive the data scheduled by the first PDCCH if the terminal receives the first information before receiving the first PDCCH and PDSCH feedback for SPS PDSCH retransmission is confirmed before receiving the first PDCCH.

Optionally, the method further includes:

processing the downlink SPS allocation information according to the third PDCCH;

and the third PDCCH is scrambled by the G-CS-RNTI, and the carried NDI value is 0.

Optionally, the processing of the downlink SPS allocation information according to the third PDCCH includes one of:

if the third PDCCH indicates SPS activation, storing downlink SPS allocation information configured by a serving cell;

and if the third PDCCH indicates SPS deactivation, deleting the downlink SPS allocation information configured by the serving cell.

Optionally, in the case of storing downlink SPS allocation information configured by the serving cell, the method further includes:

and storing the hybrid automatic repeat request HARQ information corresponding to the downlink SPS allocation information.

The embodiment of the invention also provides a terminal device, which comprises a memory, a transceiver and a processor:

a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following:

Optionally, in a case that a new data indication NDI included in the first PDCCH takes a value of 1, the processor is configured to read a computer program in the memory and perform the following operations:

Optionally, in a case that a new data indication NDI contained in the first PDCCH takes a value of 1, the processor is configured to read a computer program in the memory and perform at least one of the following operations:

in a case where the terminal receives the first information before receiving the first PDCCH and PDSCH feedback for SPS PDSCH retransmission is an acknowledgement before receiving the first PDCCH, it is determined not to receive data scheduled by the first PDCCH.

Optionally, the processor, configured to read the computer program in the memory, further performs the following operations:

and the third PDCCH is scrambled by G-CS-RNTI, and the value of the carried NDI is 0.

Optionally, the processor is configured to read the computer program in the memory and perform one of the following operations:

An embodiment of the present invention further provides a transmission processing apparatus, which is applied to a terminal device, and includes:

a first processing unit, configured to perform transmission processing of data scheduled by a first physical downlink control channel PDCCH based on a reception condition of the first information;

Embodiments of the present invention further provide a processor-readable storage medium, where a computer program is stored, and the computer program is configured to enable the processor to execute the method described above.

The invention has the beneficial effects that:

according to the scheme, after the first PDCCH for scheduling the PDSCH common to the semi-persistent scheduling group is received, the data transmission processing is carried out according to the receiving condition of the first information, the condition that the terminal cannot accurately process the information during multicast or broadcast communication can be avoided, and therefore the data transmission accuracy is guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.

Fig. 1 is a block diagram of a network system suitable for use in embodiments of the present application;

fig. 2 is a schematic flowchart illustrating a transmission processing method applied to a terminal device according to an embodiment of the present application;

FIG. 3 shows a diagram of a terminal receiving an SPS activation indication, feeding back a NACK, and receiving a PDCCH of a scheduling SPS group-common PDSCH-1 scrambled by a G-CS-RNTI;

FIG. 4 is a diagram illustrating that a terminal receives an SPS activation indication, feeds back an ACK, and receives a PDCCH of a scheduled SPS group-common PDSCH-1 scrambled by a G-CS-RNTI;

FIG. 5 shows a diagram where the terminal does not receive the SPS activation indication, but receives the PDCCH of the scheduling SPS group-common PDSCH-1 scrambled by the G-CS-RNTI;

fig. 6 is a schematic diagram showing elements of a terminal device according to an embodiment of the present application;

fig. 7 is a block diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be implemented, for example, in a sequence other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the embodiment of the present application, the term "and/or" describes an association relationship of associated objects, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

Embodiments of the present application are described below with reference to the accompanying drawings. The transmission processing method, the transmission processing device and the terminal equipment provided by the embodiment of the application can be applied to a wireless communication system. The wireless communication system may be a system using a fifth generation (5 th generation, 5G) mobile communication technology (hereinafter, referred to as a 5G system), and those skilled in the art will appreciate that the 5G NR system is merely an example and is not a limitation.

Referring to fig. 1, fig. 1 is a structural diagram of a network system to which the embodiment of the present invention is applicable, and as shown in fig. 1, the network system includes a User terminal 11 and a base station 12, where the User terminal 11 may be a User Equipment (UE), for example: the terminal Device may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device), and the specific type of the user terminal 11 is not limited in the embodiments of the present application. The base station 12 may be a base station of 5G and later releases (e.g., a gNB, a 5G NR NB), or a base station in other communication systems, or referred to as a node B, and it should be noted that in this embodiment of the present application, only the 5G base station is taken as an example, but the specific type of the base station 12 is not limited.

Some concepts related to embodiments of the present invention are first explained below.

Semi-Persistent Scheduling (SPS) is a Scheduling-free transmission technique for downlink, and is mainly used for packet periodic service transmission, which can reduce downlink control signaling overhead. The base station activates or deactivates the DL SPS transmission through a Downlink Control Indication (DCI) scrambled by a semi-Static Radio Network Temporary Identifier (CS-RNTI). In the existing New Radio (NR) unicast technology, only after the terminal receives the SPS activated PDCCH (CS-RNTI scrambled DCI), when the terminal feeds back NACK, the base station transmits the PDCCH (CS-RNTI scrambled DCI) scheduling the SPS-PDSCH retransmission.

For SPS PDSCH retransmission, the terminal performs the following steps:

1. the terminal receives an SPS activation PDCCH, wherein the SPS activation PDCCH is scrambled by a CS-RNTI, and a New Data Indicator (NDI) domain value is 0;

2. the terminal receives a first PDSCH indicated by the SPS activation PDCCH, and feeds back NACK according to the receiving condition;

3. the base station receives the NACK and sends a PDCCH for scheduling SPS-PDSCH retransmission, wherein the PDCCH for scheduling the SPS-PDSCH retransmission is scrambled by CS-RNTI, and the NDI domain value is 1;

4. and the terminal receives the PDSCH retransmission indicated by the PDCCH, combines the PDSCH retransmission with the PDSCH retransmission received last time, and feeds back ACK.

The process of the terminal receiving the PDCCH scrambled by the CS-RNTI is described in TS 38.321, and when the received PDCCH is demodulated and the NDI value is 1, the terminal considers that the NDI of the corresponding HARQ process is not inverted, i.e. is a retransmission. And the terminal receives the downlink allocation indication, sends the related HARQ process information to the HARQ entity and combines the HARQ process information with the previously received cache data of the related HARQ process information. When the NDI in the demodulated DCI after the received PDCCH is 0 and is information indicating SPS activation, the terminal considers that the NDI of the corresponding HARQ process is inverted, which is initial transmission.

In multicast communication, a base station transmits data for a Group of terminals, wherein a PDCCH scheduled in a multicast mode is called a Group-common PDCCH (Group-common PDCCH), and a Group-common PDCCH for further scheduling data is a PDCCH scrambled by a G-C-RNTI or a G-CS-RNTI (associated with SPS). Note that the unicast PDCCH for scheduling data is typically scrambled by C-RNTI or CS-RNTI (related to SPS).

In the discussion of the current standard, multicast SPS supports group-common PDCCH based SPS activation. In view of the reliability of SPS transmissions, retransmission of SPS group-common PDSCH is supported on PDCCH scrambled with G-CS-RNTI (PDSCH retransmission in multicast) or CS-RNTI (PDSCH retransmission in unicast) and with NDI = 1. Further, if the base station can receive HARQ information (ACK/NACK) of the SPS PDSCH, the SPS activation is considered to be successful. If the base station does not receive SPS PDSCH HARQ (ACK/NACK), the SPS activation is considered to be failed, and the base station needs to retransmit the SPS activation command.

The problem that exists at present is that in the multicast service/broadcast service, after a base station sends an SPS activation PDCCH (the PDCCH carries an SPS activation command), the following three situations exist for receiving the SPS activation PDCCH:

in case 1, a terminal receives an SPS activation PDCCH, successfully demodulates a PDSCH and feeds back ACK information;

in case 2, the terminal receives the SPS activation PDCCH, and feeds back NACK information when PDSCH demodulation fails;

case 3, the terminal does not receive the SPS activation PDCCH;

when the base station receives the NACK information, it sends a PDCCH scrambled by the G-CS-RNTI and NDI =1 to retransmit the PDSCH of the SPS group-common. For case 3, the terminal receives only the PDCCH scheduling the SPS group-common PDSCH retransmission and does not receive the SPS activation PDCCH, in which case the terminal does not know how to process, and in this case, how the terminal processes the received SPS retransmission data needs further study.

In order to solve the above problem, embodiments of the present application provide a transmission processing method, an apparatus, and a terminal device.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not described again.

As shown in fig. 2, an embodiment of the present invention provides a transmission processing method, which is executed by a terminal device, and includes:

step S201, based on the receiving situation of the first information, performing transmission processing of data scheduled by a first Physical Downlink Control Channel (PDCCH);

wherein the first information comprises: an activation command (which may also be referred to as an SPS activation command) for semi-persistent scheduling of a physical downlink shared channel (SPS PDSCH) or a second PDCCH for scheduling a retransmission of the SPS PDSCH;

the first PDCCH is used for scheduling a semi-persistent scheduling Group-common (SPS Group-common) PDSCH, and the first PDCCH is scrambled by a multicast semi-persistent radio network temporary identity (Group-Cemi-Static-RNTI, G-CS-RNTI).

It should be noted here that the SPS activation command is carried by PDCCH, and the PDCCH needs to be scrambled using CS-RNTI.

It should be noted that, in this embodiment of the present application, when the terminal receives the first PDCCH, the transmission processing of the data scheduled by the first PDCCH is performed based on the reception condition of one piece of information, and it should be noted that the transmission processing in this embodiment of the present application mainly refers to determining whether to receive the data scheduled by the first PDCCH and/or determining whether the data transmission scheduled by the first PDCCH is new data or retransmission data.

It should be noted that, in the embodiments of the present application, it is mainly focused on how a terminal handles retransmission of a PDSCH common to semi-persistent scheduling groups in multicast or broadcast, that is, a first PDCCH sent by a network device to the terminal indicates that retransmission scheduling is performed on the PDSCH common to the semi-persistent scheduling groups.

In the embodiment of the present application, two implementation manners of performing transmission processing of data scheduled by a first PDCCH are provided, and the two implementation manners are described below.

First, it should be noted that both the first implementation and the second implementation mentioned below are performed when a New Data Indicator (NDI) included in the first PDCCH takes a value of 1, that is, after the first PDCCH is received, if the NDI included in the first PDCCH takes a value of 1, the terminal device performs transmission processing by using the first implementation or the second implementation described below.

First implementation mode, transmission processing is carried out only according to whether first information is received or not

Optionally, the step S201 in this implementation includes at least one of the following in specific implementation:

a11, under the condition that first information is not received before the first PDCCH is received, determining NDI (non-uniform data indicator) inversion of data transmission scheduled by the first PDCCH and/or data scheduled by the first PDCCH as newly transmitted data;

it should be noted that, in this case, the terminal device does not receive the activation command of the SPS PDSCH or schedule the second PDCCH retransmitted by the SPS PDSCH before receiving the first PDCCH, and after receiving the first PDCCH, the terminal device determines that the NDI of the data transmission scheduled by the first PDCCH is inverted, that is, determines that the data scheduled by the first PDCCH is newly transmitted, when the NDI carried in the first PDCCH is equal to 1.

After the terminal device determines that the data is newly transmitted, hybrid automatic repeat request (HARQ) feedback can be performed according to the reception condition of the newly transmitted data.

A12, under the condition that a terminal receives first information before receiving a first PDCCH, determining that NDI of data transmission scheduled by the first PDCCH is not inverted and/or data scheduled by the first PDCCH is retransmission data;

it should be noted that, in this case, the terminal device receives the activation command of the SPS PDSCH or the second PDCCH for scheduling the SPS PDSCH retransmission before receiving the first PDCCH, and after receiving the first PDCCH, the terminal device determines that the NDI of the data transmission scheduled by the first PDCCH is not inverted, that is, determines that the data scheduled by the first PDCCH is retransmission data, in a case that the NDI carried in the first PDCCH is equal to 1.

After the terminal device determines that the data is retransmitted, HARQ feedback can be performed according to the receiving condition of the retransmitted data.

Second implementation manner, transmission processing is carried out according to whether the first information is received or not and PDSCH feedback condition aiming at SPS PDSCH retransmission before the first PDCCH is received

It should be noted that, after receiving the PDSCH, the terminal device may send PDSCH feedback (also referred to as HARQ feedback) to the network device, and when the terminal device successfully receives the PDSCH, the feedback is an Acknowledgement (ACK), and when the terminal device does not successfully receive the PDSCH, the feedback is a non-acknowledgement (NACK).

b11, under the condition that the terminal does not receive the first information before receiving the first PDCCH, determining NDI (data transmission indicator) inversion of data scheduled by the first PDCCH and/or data scheduled by the first PDCCH as newly transmitted data;

it should be noted that, in this case, because the terminal device does not receive the activation command for the SPS PDSCH or the PDCCH for scheduling the SPS PDSCH retransmission before transmission, ACK/NACK is not fed back, so in this case, only the activation command for the SPS PDSCH or the second PDCCH for scheduling the SPS PDSCH retransmission is not received before receiving the first PDCCH, and after receiving the first PDCCH, and under the condition that the NDI carried in the first PDCCH is equal to 1, it is determined that the NDI of the data transmission scheduled by the first PDCCH is inverted, that is, it is determined that the data scheduled by the first PDCCH is newly transmitted.

Note that the processing in which the first information is not received in this implementation is the same as the processing in which the first information is not received in the implementation.

B12, under the condition that the terminal receives the first information before receiving the first PDCCH and the PDSCH feedback for SPS PDSCH retransmission is not confirmed before receiving the first PDCCH, determining that the NDI of data transmission scheduled by the first PDCCH is not inverted and/or the data scheduled by the first PDCCH is retransmission data;

b13, determining not to receive the data scheduled by the first PDCCH when the terminal receives the first information before receiving the first PDCCH and PDSCH feedback for SPS PDSCH retransmission is confirmed before receiving the first PDCCH;

it should be noted that B12 and B13 indicate that the terminal device has performed retransmission scheduling of the SPS PDSCH before receiving the first PDCCH, and the first PDCCH sent by the network device is also used for scheduling retransmission of the SPS PDSCH, so that the terminal needs to determine whether to receive data scheduled by the first PDCCH and/or determine that data transmission scheduled by the first PDCCH is retransmission data according to the previous receiving conditions (ACK for successful reception and NACK for failed reception) of retransmission of the SPS PDSCH; that is to say, B12 and B13 refer to that the terminal device receives an activation command of the SPS PDSCH or schedules a second PDCCH of the SPS PDSCH retransmission before receiving the first PDCCH, and meanwhile needs to determine a PDSCH feedback situation for the SPS PDSCH retransmission before receiving the first PDCCH, and if the PDSCH feedback is NACK, it is determined that the NDI of the data transmission scheduled by the first PDCCH is not inverted, that is, it is determined that the data scheduled by the first PDCCH is retransmission data; if the PDSCH feedback is ACK, indicating that the terminal device has successfully received the PDSCH, the terminal device may not receive the data scheduled by the first PDCCH any more; that is, the terminal device receives data scheduled by the first PDCCH only when the terminal has not successfully received the PDSCH, thereby reducing power consumption of the terminal.

It should be noted that the main differences between the first implementation and the second implementation are: for a terminal device that receives an activation command for an SPS PDSCH and successfully receives the scheduled SPS PDSCH before data transmission scheduled by a first PDCCH, the terminal device needs to receive a retransmitted SPS PDSCH (PDCCH-scheduled PDSCH with NDI = 1) if the terminal device employs the first implementation, and does not need to receive a retransmitted SPS PDSCH (PDCCH-scheduled PDSCH with NDI = 1) if the terminal device employs the second implementation.

Optionally, the NDI value carried in the PDCCH sent by the network device may be 1 or 0, how the terminal device performs transmission processing when the NDI value is 1 is described above, and the following describes a case where the NDI value is 0.

Optionally, the method according to the embodiment of the present application further includes:

It should be further noted that, a specific implementation manner of performing the processing of the downlink SPS allocation information according to the third PDCCH includes one of the following:

c11, if the third PDCCH indicates SPS activation, storing downlink SPS allocation information configured by a serving cell;

optionally, in this case, the terminal device further needs to store HARQ information corresponding to the downlink SPS allocation information.

And C12, if the third PDCCH indicates SPS deactivation, deleting the downlink SPS allocation information configured by the serving cell.

Specific applications of the embodiments of the present application are illustrated below from the perspective of communication between a base station and a terminal.

It should be noted that, since one SPS may activate one or more SPS PDSCHs, that is, the SPS activation command carries HARQ process information, after receiving the SPS activation command, the terminal corresponds to one HARQ process number for each PDSCH according to the HARQ process information in the SPS activation command, and in general, one PDSCH corresponds to one HARQ process number.

The following description is made from the perspective of the HARQ process.

Example 1 scheduling of SPS group-common PDSCH retransmission by PDCCH scrambled by G-CS-RNTI

Scene: in the multicast, at least one terminal receives the SPS activation command, receives the SPS PDSCH, fails to decode, and feeds back NACK. Therefore, the base station transmits a PDCCH scrambled by the G-CS-RNTI and NDI =1 to retransmit the SPS PDSCH in a multicast manner.

For a certain terminal within a group, there are three possible cases:

the first condition is as follows: the terminal receives the SPS activation command (using DCI for SPS activation, and the corresponding DCI may be referred to as SPS activation DCI), receives the SPS PDSCH and fails to decode, and feeds back NACK, as shown in fig. 3;

case two: the terminal receives the SPS activation command, receives the SPS PDSCH and successfully decodes the SPS PDSCH, and feeds back ACK, as shown in FIG. 4;

case three: the terminal does not receive the SPS activation command, as shown in fig. 5.

If the terminal adopts the first implementation manner, the main implementation of the terminal side is as follows:

1. for the terminals belonging to the case one and the case two, the main transmission processing procedure is as follows:

if the terminal receives the SPS activation command of the corresponding HRAQ process before the transmission or the PDCCH of the corresponding HARQ process for scheduling the SPS PDSCH retransmission, the terminal determines that the NDI of the HARQ process is not inverted, namely, the data is retransmitted.

2. For the terminal belonging to the third case, the main transmission processing process is as follows:

if the terminal does not receive the SPS activation command of the corresponding HARQ process before the transmission or the PDCCH of the corresponding HARQ for scheduling the SPS PDSCH retransmission, the terminal considers that the NDI of the HARQ process is reversed, namely, the data is newly transmitted.

If the terminal adopts the second implementation mode, the main implementation of the terminal side is as follows:

1. for a terminal belonging to case one, the main transmission processing procedure is as follows:

if the terminal receives the SPS activation command of the corresponding HRAQ process before the transmission, or receives the PDCCH of the corresponding HARQ process for scheduling SPS PDSCH retransmission and receives the PDSCH feedback of the corresponding HARQ process as NACK before the transmission, the terminal determines that the NDI of the HARQ process is not inverted, namely data is retransmitted.

2. For the terminal belonging to the second case, the main transmission processing procedure is as follows:

if the terminal receives the SPS activation command of the corresponding HRAQ process before the transmission, or receives the PDCCH of the corresponding HARQ process for scheduling SPS PDSCH retransmission and receives the PDSCH feedback of the corresponding HARQ process as ACK before the transmission, the terminal does not need to receive the corresponding PDSCH.

3. For the terminal belonging to case three, the main transmission processing procedure is as follows:

if the terminal does not receive the SPS activation command of the corresponding HARQ process before the transmission or the PDCCH of the corresponding HARQ for scheduling the SPS PDSCH retransmission, the terminal considers that the NDI of the HARQ process is turned over, namely the data is newly transmitted.

Example 2, PDCCH activation/deactivation scrambled by G-CS-RNTI SPS group-common PDSCH Transmission

In a multicast or broadcast service, a base station transmits a PDCCH for SPS activation scrambled by a G-CS-RNTI and NDI =0, and a terminal processes as follows:

if the PDCCH content indicates SPS deactivation, clearing downlink SPS allocation information configured by the serving cell;

or

And if the PDCCH content indicates SPS activation, storing downlink SPS allocation information configured by the serving cell and corresponding HARQ information.

It should be noted that, the embodiment of the present invention provides a method for receiving multicast SPS PDSCH retransmission data, and when a terminal receives a PDCCH for scheduling multicast SPS PDSCH retransmission, subsequent transmission processing is performed according to whether the PDCCH for SPS activation of a corresponding HARQ process or the PDCCH for scheduling SPS PDSCH retransmission of the corresponding HARQ process is received; the problem that data combination errors of the multicast SPS PDSCH occur when the multicast SPS PDSCH retransmission data is received by a terminal which does not receive the SPS activation command or schedules the PDCCH of the SPS PDSCH of the related HARQ process is avoided, and the reliability of the multicast SPS retransmission mechanism can be improved by the embodiment of the application.

The technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, suitable systems may be global system for mobile communications (GSM) systems, code Division Multiple Access (CDMA) systems, wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) systems, long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, long term evolution (long term evolution) systems, LTE-a systems, universal mobile systems (universal mobile telecommunications systems, UMTS), universal internet Access (world interoperability for microwave Access (WiMAX) systems, new Radio interface (NR) systems, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5 GS), and the like.

The terminal device referred to in the embodiments of the present application may be a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile phone (or called a "cellular" phone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange languages and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services to a terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames and Internet Protocol (IP) packets with one another as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communications network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB) or an e-NodeB) in a Long Term Evolution (LTE) System, a 5G Base Station (gNB) in a 5G network architecture (next generation System), a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico), and the like, which are not limited in the embodiments of the present application. In some network configurations, a network device may include Centralized Unit (CU) nodes and Distributed Unit (DU) nodes, which may also be geographically separated.

Multiple Input Multiple Output (MIMO) transmission may be performed between the network device and the terminal device by using one or more antennas, where the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of root antenna combinations.

As shown in fig. 6, an embodiment of the present invention provides a transmission processing apparatus 600, applied to a terminal device, including:

a first processing unit 601, configured to perform, based on a reception situation of the first information, transmission processing of data scheduled by a first physical downlink control channel PDCCH;

Optionally, in a case that a new data indication NDI included in the first PDCCH takes a value of 1, the first processing unit 601 is configured to implement:

Optionally, in a case that a new data indication NDI included in the first PDCCH takes a value of 1, the first processing unit 601 is configured to implement at least one of the following:

when the terminal receives first information before receiving the first PDCCH and PDSCH feedback retransmitted by the SPS PDSCH is not confirmed before receiving the first PDCCH, determining that the NDI of data transmission scheduled by the first PDCCH is not inverted and/or the data scheduled by the first PDCCH is retransmission data;

Optionally, the apparatus further comprises:

a second processing unit, configured to perform processing on the downlink SPS allocation information according to the third PDCCH;

Optionally, the second processing unit is configured to implement one of:

Optionally, in the case of storing downlink SPS allocation information configured by the serving cell, the apparatus further includes:

and the storage unit is used for storing hybrid automatic repeat request HARQ information corresponding to the downlink SPS allocation information.

It should be noted that the apparatus embodiment is an apparatus corresponding to the method embodiment one to one, and all implementation manners in the method embodiment are applicable to the embodiment of the apparatus, and the same technical effect can be achieved.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solutions of the present application, which are essential or contributing to the prior art, or all or part of the technical solutions may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

As shown in fig. 7, an embodiment of the present invention further provides a terminal device, which includes a processor 700, a transceiver 710, a memory 720, and a program stored in the memory 720 and operable on the processor 700; the transceiver 710 is connected to the processor 700 and the memory 720 through a bus interface, wherein the processor 700 is configured to read a program in the memory and execute the following processes:

based on the receiving condition of the first information, performing transmission processing of data scheduled by a first Physical Downlink Control Channel (PDCCH);

the first PDCCH is used for scheduling a PDSCH common to the semi-persistent scheduling group, and the first PDCCH is scrambled by a multicast semi-static radio network temporary identifier G-CS-RNTI.

A transceiver 710 for receiving and transmitting data under the control of the processor 700.

Where in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 700 and memory represented by memory 720. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 710 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over transmission media including wireless channels, wired channels, fiber optic cables, and the like. The user interface 730 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 in performing operations.

Alternatively, the processor 700 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

The processor is used for executing any one of the methods provided by the embodiment of the application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

Optionally, in a case that new data included in the first PDCCH indicates that the NDI takes a value of 1, the processor is configured to read a computer program in the memory and perform the following operations:

Optionally, in a case that new data included in the first PDCCH indicates that the NDI takes a value of 1, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

It should be noted that, the terminal device provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the transmission processing method applied to the terminal device. The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A transmission processing method, performed by a terminal device, comprising:

2. The method according to claim 1, wherein, when a new data indication NDI included in the first PDCCH takes a value of 1, the performing, based on a reception condition of the first information, transmission processing of data scheduled by a first physical downlink control channel PDCCH includes:

3. The method according to claim 1 or 2, wherein, when a new data indication NDI included in the first PDCCH takes a value of 1, the performing, based on a reception condition of the first information, transmission processing of data scheduled by a first physical downlink control channel PDCCH includes:

4. The method according to claim 1 or 2, wherein, when a new data indication NDI included in the first PDCCH takes a value of 1, the processing of transmitting data scheduled by the first physical downlink control channel PDCCH based on the reception condition of the first information includes at least one of:

5. The method of claim 1, further comprising:

6. The method of claim 5, wherein the processing the downlink SPS allocation information according to the third PDCCH comprises one of:

7. The method of claim 6, wherein in the case of storing downlink SPS allocation information for serving cell configuration, the method further comprises:

8. A terminal device, comprising a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

wherein the first information comprises: an activation command of a semi-persistent scheduling physical downlink shared channel (SPS PDSCH) or a second PDCCH for scheduling SPS PDSCH retransmission;

9. The terminal device of claim 8, wherein, in a case that a New Data Indication (NDI) included in the first PDCCH takes a value of 1, the processor is configured to read the computer program in the memory and perform the following operations:

10. The terminal device according to claim 8 or 9, wherein, in a case where a new data indication NDI contained in the first PDCCH takes a value of 1, the processor is configured to read the computer program in the memory and perform the following operations:

11. The terminal device according to claim 8 or 9, wherein, in a case where a new data indication NDI contained in the first PDCCH takes a value of 1, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

12. The terminal device of claim 8, wherein the processor, when executing the computer program stored in the memory, further performs the following:

13. The terminal device of claim 12, wherein the processor is configured to read the computer program stored in the memory and perform one of the following operations:

14. A transmission processing device applied to a terminal device, comprising:

15. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1 to 7.