CN115915497A - Transmission processing method and device and terminal equipment - Google Patents

Abstract

The invention provides a transmission processing method, device and terminal equipment, and relates to the technical field of communication. The method includes: based on the reception of the first information, performing transmission processing of data scheduled by the first physical downlink control channel PDCCH; wherein the first information includes: an activation order of the semi-persistent scheduling physical downlink shared channel SPS PDSCH or Scheduling the second PDCCH for retransmission of the SPS PDSCH; the first PDCCH is used to schedule the common PDSCH of the semi-persistent scheduling group, and the first PDCCH is scrambled by the multicast semi-static wireless network temporary identifier G-CS-RNTI. In the above solution, after receiving the first PDCCH that schedules the common PDSCH of the semi-persistent scheduling group, data transmission processing is performed based on the reception of the first information, which can prevent the terminal from being unable to perform information during multicast or broadcast communication. The situation of accurate processing occurs, thereby ensuring the accuracy of data transmission.

Description

Transmission processing method, device and terminal equipment

technical field

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

Background technique

In the current fifth-generation new radio (New Radio, NR) system, when the terminal receives the scheduled physical layer downlink shared channel (Physical Downlink Share Channel, PDSCH) to retransmit the physical layer downlink control channel (Physical Downlink Control Channel, PDCCH) , the terminal will combine the received information with the buffered data of the previously received related Hybrid Automatic Repeat reQuest (HARQ) process. The current problem is: in the existing unicast transmission, the base station will send the scheduling SPS only after receiving the initial semi-persistent scheduling (Semi-Persistent Scheduling, SPS) activation command and feedback non-acknowledgment (NACK). - PDCCH for PDSCH retransmission. However, in multicast or broadcast communication, some terminals only receive the PDCCH for scheduling SPS-PDSCH retransmission but do not receive the SPS activation command for the initial transmission. In this case, the terminal will still combine the received information with the Merging the data cached by the related HARQ process before will lead to the problem of data merging error.

Contents of the invention

The embodiment of the present invention provides a transmission processing method, device and terminal equipment to solve the problem that in multicast or broadcast communication, some terminals only receive the PDCCH for scheduling SPS-PDSCH retransmission but do not receive the initial SPS activation command In this case, the terminal will still combine the received information with the data cached in the previous related HARQ process, resulting in data merging errors and the problem that the accuracy of data transmission cannot be guaranteed.

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

Based on the receiving situation of the first information, perform transmission processing of data scheduled by the first physical downlink control channel PDCCH;

Wherein, the first information includes: an activation command of the physical downlink shared channel SPS PDSCH for semi-persistent scheduling or a second PDCCH for scheduling SPS PDSCH retransmission;

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

Optionally, in the case where the new data contained in the first PDCCH indicates that the NDI value is 1, the transmission processing of the data scheduled by the first physical downlink control channel PDCCH is performed based on the reception of the first information, include:

In the case that the terminal does not receive the first information before receiving the first PDCCH, it is determined that the NDI inversion of the data transmission scheduled by the first PDCCH and/or the data scheduled by the first PDCCH is newly transmitted data.

Optionally, in the case where the new data contained in the first PDCCH indicates that the NDI value is 1, the transmission processing of the data scheduled by the first physical downlink control channel PDCCH is performed based on the reception of the first information, include:

If the terminal receives the first information before receiving the first PDCCH, it determines 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, in the case where the new data contained in the first PDCCH indicates that the NDI value is 1, the transmission processing of the data scheduled by the first physical downlink control channel PDCCH is performed based on the reception of the first information, Include at least one of the following:

In the case that the terminal receives the first information before receiving the first PDCCH and the PDSCH feedback for SPSPDSCH retransmission before receiving the first PDCCH is non-acknowledged, determine 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;

When the terminal receives the first information before receiving the first PDCCH, and the PDSCH feedback for SPSPDSCH retransmission before receiving the first PDCCH is an acknowledgment, determine not to receive the data scheduled by the first PDCCH.

Optionally, the method also includes:

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

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

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

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

If the third PDCCH indicates SPS deactivation, delete the downlink SPS allocation information configured by the serving cell.

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

The hybrid automatic repeat request (HARQ) information corresponding to the downlink SPS allocation information is stored.

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

The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:

Based on the receiving situation of the first information, perform transmission processing of data scheduled by the first physical downlink control channel PDCCH;

Wherein, the first information includes: an activation command of the physical downlink shared channel SPS PDSCH for semi-persistent scheduling or a second PDCCH for scheduling SPS PDSCH retransmission;

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

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

In the case that the terminal does not receive the first information before receiving the first PDCCH, it is determined that the NDI inversion of the data transmission scheduled by the first PDCCH and/or the data scheduled by the first PDCCH is newly transmitted data.

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

If the terminal receives the first information before receiving the first PDCCH, it determines 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, in a case where the new data contained in the first PDCCH indicates that the NDI value is 1, the processor is configured to read a computer program in the memory and perform at least one of the following operations :

In the case that the terminal receives the first information before receiving the first PDCCH and the PDSCH feedback for SPSPDSCH retransmission before receiving the first PDCCH is non-acknowledged, determine 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;

When the terminal receives the first information before receiving the first PDCCH, and the PDSCH feedback for SPSPDSCH retransmission before receiving the first PDCCH is an acknowledgment, determine not to receive the data scheduled by the first PDCCH.

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

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

Wherein, the third PDCCH is scrambled by the G-CS-RNTI, and 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:

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

If the third PDCCH indicates SPS deactivation, delete the downlink SPS allocation information configured by the serving cell.

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

The hybrid automatic repeat request (HARQ) information corresponding to the downlink SPS allocation information is stored.

An embodiment of the present invention also provides a transmission processing device, which is applied to a terminal device, including:

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

Wherein, the first information includes: an activation command of the physical downlink shared channel SPS PDSCH for semi-persistent scheduling or a second PDCCH for scheduling SPS PDSCH retransmission;

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

An embodiment of the present invention also provides a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is configured to cause the processor to execute the above method.

The beneficial effects of the present invention are:

In the above solution, after receiving the first PDCCH that schedules the common PDSCH of the semi-persistent scheduling group, the data transmission process is performed based on the reception of the first information, which can avoid that the terminal cannot perform information during multicast or broadcast communication. The situation of accurate processing occurs, thereby ensuring the accuracy of data transmission.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in this application. Those skilled in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 represents the structural diagram of a kind of network system applicable to the embodiment of the present application;

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

Figure 3 shows a schematic diagram of the terminal receiving the SPS activation indication, feeding back NACK, and receiving the PDCCH scheduled for SPS group-common PDSCH-1 scrambled by G-CS-RNTI;

Figure 4 shows a schematic diagram of the terminal receiving the SPS activation indication, feeding back ACK, and receiving the PDCCH scheduled for SPSgroup-common PDSCH-1 scrambled by the G-CS-RNTI;

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

FIG. 6 shows a schematic diagram of units of a terminal device in an embodiment of the present application;

FIG. 7 shows a structural diagram of a terminal device according to an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein are, for example, practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

The term "and/or" in the embodiments of this application describes the association relationship of associated objects, indicating 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 These three situations. The character "/" generally indicates that the contextual objects are an "or" relationship. The term "plurality" in the embodiments of the present application refers to two or more, and other quantifiers are similar.

In the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

Embodiments of the present application will be described below in conjunction with the accompanying drawings. The transmission processing method, device, and terminal device provided in the embodiments of the present application may be applied in a wireless communication system. The wireless communication system may be a system using the fifth generation (5thGeneration, 5G) mobile communication technology (hereinafter referred to as 5G system). Those skilled in the art can understand that the 5G NR system is only an example and not a limitation.

Referring to FIG. 1, FIG. 1 is a structural diagram of a network system applicable to an embodiment of the present application. As shown in FIG. 1, it includes a user terminal 11 and a base station 12, wherein the user terminal 11 may be a user equipment (User Equipment, UE ), for example: it can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a personal digital assistant (personal digital assistant, referred to as PDA), a mobile Internet device (Mobile Internet Device, MID) or a wearable It should be noted that the specific type of the user terminal 11 is not limited in the embodiment of the present application. The above-mentioned base station 12 may be a base station of 5G and later versions (for example: gNB, 5G NR NB), or a base station in other communication systems, or called Node B. It should be noted that, in the embodiment of this application, only 5G The base station is taken as an example, but the specific type of the base station 12 is not limited.

First, some concepts related to the embodiments of the present invention are described as follows.

Semi-Persistent Scheduling (Semi-Persistent Scheduling, SPS) is a scheduling-free transmission technology for downlink. It is mainly used for small packet periodic service transmission, which can reduce downlink control signaling overhead. The base station activates or deactivates the DL SPS transmission through the Downlink Control Indication (DCI) scrambled by the Cemi Static Radio Network Temporary Identifier (CS-RNTI). In the existing fifth-generation new radio (New Radio, NR) unicast technology, the terminal will only send the scheduling SPS when the terminal feeds back NACK after receiving the SPS to activate the PDCCH (DCI scrambled by CS-RNTI). - PDCCH for PDSCH retransmission (DCI scrambled by CS-RNTI).

Regarding the SPS PDSCH retransmission, the execution steps of the terminal are as follows:

1. The terminal receives the SPS to activate the PDCCH, wherein the SPS activated PDCCH is scrambled by the CS-RNTI, and the new data indicator (NewData Indicator, NDI) field value is 0;

2. The terminal receives the first PDSCH indicated by the SPS activation PDCCH, and feeds back NACK according to the reception situation;

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

4. The terminal receives the retransmitted PDSCH indicated by the PDCCH, combines it with the last received PDSCH, and feeds back an ACK.

TS 38.321 describes the process of the terminal receiving the PDCCH scrambled by CS-RNTI. When the received PDCCH is demodulated and the value of NDI is 1, the terminal considers that the NDI corresponding to the HARQ process has not been reversed, that is, retransmission. The terminal receives the downlink allocation indication, and sends the relevant HARQ process information to the HARQ entity, and combines it with the previously received cached data of the relevant HARQ process information. When the NDI in the demodulated DCI after receiving the PDCCH is 0 and is information indicating SPS activation, the terminal considers that the NDI of the corresponding HARQ process is reversed, which is the initial transmission.

Multicast communication means that the base station sends data for a group of terminals. The PDCCH scheduled in multicast mode is called group common PDCCH (Group-common PDCCH). The Group-common PDCCH for further scheduling data is provided by G-C-RNTI or PDCCH scrambled by G-CS-RNTI (related to SPS). Note that the unicast PDCCH for scheduling data is generally scrambled by C-RNTI or CS-RNTI (related to SPS).

In the discussion of the current standard, multicast SPS supports SPS activation based on group-common PDCCH. Considering the reliability of SPS transmission, it supports PDCCH with NDI=1 scrambled by G-CS-RNTI (multicast PDSCH retransmission) or CS-RNTI (unicast PDSCH retransmission) Retransmit the PDSCH of SPS group-common. In addition, if the base station can receive the HARQ information (ACK/NACK) of the SPS PDSCH, it is considered that the SPS activation is successful. If the base station does not receive the SPS PDSCH HARQ (ACK/NACK), it considers that the SPS activation has failed, and the base station needs to resend the SPS activation command.

The current problem is that in the multicast service/broadcast service, after the base station sends the SPS activation PDCCH (the PDCCH carries the SPS activation command), there are the following three situations for the reception of the SPS activation PDCCH:

Case 1. The terminal receives the SPS to activate the PDCCH, and the PDSCH demodulation is successful, and feeds back ACK information;

Case 2: The terminal receives the SPS to activate the PDCCH, and the demodulation of the PDSCH fails, and feeds back NACK information;

Case 3: The terminal does not receive the SPS to activate the PDCCH;

When the base station receives the NACK information, it will send the PDCCH scrambled by the G-CS-RNTI and NDI=1 to retransmit the PDSCH of the SPSgroup-common. For case 3, the terminal only receives the PDCCH that schedules SPS group-common PDSCH retransmission, but does not receive the SPS activation PDCCH. At this time, the terminal does not know how to deal with it. In this case, how does the terminal process the received SPS retransmission The data require further study.

The embodiments of the present application aim at the above problems and provide a transmission processing method, device and terminal equipment.

Among them, the method and the device are conceived based on the same application. Since the principle of solving problems of the method and the device is similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.

As shown in FIG. 2, an embodiment of the present invention provides a transmission processing method executed by a terminal device, including:

Step S201, based on the reception of the first information, transmit the data scheduled by the first physical downlink control channel PDCCH;

Wherein, the first information includes: an activation command (also referred to as an SPS activation command) of the Semi-Persistent Scheduling Physical Downlink Shared Channel (SPS PDSCH) or a second PDCCH for scheduling SPS PDSCH retransmission;

The first PDCCH is used to schedule the PDSCH of the semi-persistent scheduling group (SPS Group-common), and the first PDCCH is temporarily identified by the multicast semi-static wireless network (Group-Cemi-Static-RNTI, G-CS -RNTI) scrambling.

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

It should be noted that, in the embodiment of the present application, when the terminal receives the first PDCCH, based on the reception of a piece of information, the transmission processing of the data scheduled by the first PDCCH is performed. It should be noted that, in the embodiment of the present application, the The transmission processing mainly refers to judging whether to receive the data scheduled by the first PDCCH and/or determining whether the data transmission scheduled by the first PDCCH is newly transmitted data or retransmitted data.

What needs to be explained here is that the embodiment of the present application mainly focuses on how the terminal handles the retransmission of the common PDSCH of the semi-persistent scheduling group in multicast or broadcast, that is, the first PDCCH indication sent by the network device to the terminal The purpose is to perform retransmission scheduling on the common PDSCH of the semi-persistent scheduling group.

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

First of all, it needs to be explained that both the implementation mode 1 and the implementation mode 2 mentioned below are performed when the value of the new data indicator (NDI) contained in the first PDCCH is 1, that is, After receiving the first PDCCH, if the value of NDI contained in the first PDCCH is 1, the terminal device uses the following implementation mode 1 or implementation mode 2 to perform transmission processing.

Implementation method 1. Transmission processing is performed only based on whether the first information is received

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

A11. When the first information is not received before receiving the first PDCCH, determine that the NDI inversion of the data transmission scheduled by the first PDCCH and/or the data scheduled by the first PDCCH is newly transmitted data;

It should be noted that this situation refers to that the terminal equipment does not receive the activation command of SPSPDSCH or the second PDCCH that schedules the retransmission of SPS PDSCH before receiving the first PDCCH, then the terminal equipment receives the first PDCCH. When the NDI carried in the PDCCH is equal to 1, it is determined that the NDI inversion of the data transmission scheduled by the first PDCCH is determined, that is, it is determined that the data scheduled by the first PDCCH is newly transmitted data.

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

A12. When the terminal receives the first information before receiving the first PDCCH, determine 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;

It should be noted that this situation refers to the fact that the terminal device receives the SPS PDSCH activation command or the second PDCCH that schedules SPS PDSCH retransmission before receiving the first PDCCH, then the terminal device receives the first PDCCH. When the NDI carried in the PDCCH is equal to 1, 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.

After the terminal device determines to retransmit the data, it can perform HARQ feedback according to the reception status of the retransmitted data.

Implementation mode 2. Perform transmission processing according to whether the first information is received and the PDSCH feedback situation for SPS PDSCH retransmission before receiving the first PDCCH

First of all, it needs to be explained that after the terminal device receives the PDSCH, it can send PDSCH feedback (also can be considered as HARQ feedback) to the network device. When the terminal device successfully receives the PDSCH, the feedback is an acknowledgment (ACK). When the terminal device When the PDSCH is unsuccessfully received, a non-acknowledgement acknowledgment (NACK) is fed back.

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

B11. In the case that the terminal does not receive the first information before receiving the first PDCCH, determine that the NDI inversion of the data transmission scheduled by the first PDCCH and/or the data scheduled by the first PDCCH is newly transmitted data;

It should be noted that in this case, because the terminal device has not received the SPS PDSCH activation command or the PDCCH for scheduling SPS PDSCH retransmission before this transmission, it will not feed back ACK/NACK, so in this case only need Before receiving the first PDCCH, the activation command of SPS PDSCH or the second PDCCH that schedules SPS PDSCH retransmission is not received, and after receiving the first PDCCH, when the NDI carried in the first PDCCH is equal to 1, determine the first The NDI inversion of the data transmission scheduled by the PDCCH is to determine that the data scheduled by the first PDCCH is newly transmitted data.

It should be noted that the processing situation of not receiving the first information in this implementation manner is the same as the processing situation of not receiving the first information in the first implementation manner.

B12. When the terminal receives the first information before receiving the first PDCCH and the PDSCH feedback for the SPS PDSCH retransmission before receiving the first PDCCH is non-confirmation, determine that the NDI of the data transmission scheduled by the first PDCCH is not reversed And/or the data scheduled by the first PDCCH is retransmission data;

B13. When the terminal receives the first information before receiving the first PDCCH and the PDSCH feedback for SPS PDSCH retransmission before receiving the first PDCCH is confirmed, determine not to receive the data scheduled by the first PDCCH;

It should be noted that B12 and B13 refer to that the terminal device has already scheduled the retransmission of the SPSPDSCH before receiving the first PDCCH, then the first PDCCH sent by the network device is also used to schedule the retransmission of the SPS PDSCH, and the terminal needs to According to the reception situation of the retransmission of the previous SPS PDSCH (reception success feedback ACK, reception failure feedback NACK), determine whether to receive the data scheduled by the first PDCCH and/or determine that the data transmission scheduled by the first PDCCH is retransmission data; that is In other words, B12 and B13 refer to the fact that the terminal device receives the SPS PDSCH activation command or schedules the second PDCCH for SPS PDSCH retransmission before receiving the first PDCCH, and also needs to determine the SPS PDSCH retransmission before receiving the first PDCCH. For PDSCH feedback, if the PDSCH feedback is NACK, it is determined that the NDI of the data transmission scheduled by the first PDCCH has not been inverted, that is, it is determined that the data scheduled by the first PDCCH is retransmission data; if the PDSCH feedback is ACK, it indicates that the terminal device has successfully received PDSCH, then the terminal device does not need to receive the data scheduled by the first PDCCH at this time; Reduce terminal power consumption.

It should be noted that the main difference between the above-mentioned implementation mode 1 and the implementation mode 2 is: for the terminal equipment that receives the activation command of the SPS PDSCH and the successful reception of the SPS PDSCH scheduled by it before the data transmission scheduled by the first PDCCH, If the terminal device adopts the first implementation method, it needs to receive the retransmitted SPS PDSCH (the PDSCH scheduled by the PDCCH with NDI=1), and if the terminal device adopts the second implementation method, it does not need to receive the retransmitted SPS PDSCH (the PDCCH scheduled by the NDI=1 PDSCH). PDSCH).

Optionally, the value of NDI carried in the PDCCH sent by the network device can be 1 or 0. The above has introduced how the terminal device performs transmission processing when the value of NDI is 1. Next, the value of NDI The case of 0 is introduced as follows.

Optionally, the manner of the embodiment of the present application further includes:

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

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

It should be further noted that the specific implementation of the processing of downlink SPS allocation information according to the third PDCCH includes the following items:

C11. If the third PDCCH indicates SPS activation, store the downlink SPS allocation information configured by the serving cell;

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

C12. If the third PDCCH indicates SPS deactivation, delete downlink SPS allocation information configured in the serving cell.

From the perspective of the communication between the base station and the terminal, the specific application of the embodiment of the present application is illustrated as follows.

First of all, it should be explained that one SPS can activate one or more SPS PDSCHs, that is, the SPS activation command carries HARQ process information. After receiving the SPS activation command, the terminal will correspond to each PDSCH according to the HARQ process information in the SPS activation command One HARQ process number, usually, one PDSCH corresponds to one HARQ process number.

The following describes from the perspective of the HARQ process as follows.

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

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

For a terminal in the group, there are three possible situations:

Situation 1: The terminal receives an SPS activation command (uses DCI for SPS activation, and the corresponding DCI can be called SPS activation DCI), receives SPS PDSCH and fails to decode, and feeds back NACK, as shown in Figure 3;

Situation 2: The terminal receives the SPS activation command, receives the SPS PDSCH and decodes it successfully, and feeds back ACK, as shown in Figure 4;

Situation 3: The terminal does not receive the SPS activation command, as shown in FIG. 5 .

If the terminal adopts the above implementation method 1, the main implementation on the terminal side is as follows:

1. For the terminals belonging to Case 1 and Case 2, the main transmission processing process is:

If the terminal receives the SPS activation command of the corresponding HRAQ process before this transmission, or the PDCCH of the scheduled SPS PDSCH retransmission of the corresponding HARQ process, the terminal considers that the NDI of the HARQ process has not been reversed, that is, retransmits the data.

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

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

If the terminal adopts the second implementation method, the main implementation on the terminal side is as follows:

1. For a terminal belonging to case 1, its main transmission processing process is:

If the terminal receives the SPS activation command of the corresponding HRAQ process before this transmission, or the PDCCH that schedules the SPS PDSCH retransmission of the corresponding HARQ process, and the PDSCH feedback of the corresponding HARQ process before that is NACK, the terminal considers this HARQ process The NDI is not flipped, that is, the data is retransmitted.

2. For the terminal belonging to the second situation, its main transmission processing process is:

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

3. For the terminal belonging to the third case, its main transmission processing process is:

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

Example 2. PDCCH scrambled by G-CS-RNTI activates/deactivates SPS group-common PDSCH transmission

In the multicast or broadcast service, the base station sends the PDCCH for SPS activation scrambled by G-CS-RNTI and NDI=0, the processing method of the terminal is as follows:

If the PDCCH content indicates SPS deactivation, clear the downlink SPS allocation information configured in the serving cell;

or

If the PDCCH content indicates that the SPS is activated, the downlink SPS allocation information and corresponding HARQ information configured by the serving cell are stored.

It should be noted that the embodiment of the present invention proposes a method of receiving multicast SPS PDSCH retransmission data. When the terminal receives the PDCCH for scheduling multicast SPS PDSCH retransmission, it uses the SPS activation method according to whether it has received the corresponding HARQ process. The PDCCH of the scheduled SPS PDSCH of the corresponding HARQ process or the PDCCH of the retransmission of the SPS PDSCH of the corresponding HARQ process, and subsequent transmission processing; avoiding the terminal that has not received the SPS activation command or the PDCCH of the SPS PDSCH of the scheduling related HARQ process, after receiving the multicast SPSPDSCH retransmission data When the multicast SPS PDSCH data merging error occurs, the embodiment of the present application can improve the reliability of the multicast SPS retransmission mechanism.

The technical solutions provided by the embodiments of the present application can be applied to various systems, especially 5G systems. For example, the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio business (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, advanced long-term Evolution (long term evolution advanced, LTE-A) system, universal mobile telecommunications system (UMTS), global interconnection microwave access (worldwide interoperability for microwave access, WiMAX) system, 5G new air interface (New Radio, NR) system, etc. . These various systems include end devices and network devices. The system may also include a core network part, such as an evolved packet system (Evolved Packet System, EPS), a 5G system (5GS), and the like.

The terminal device involved in this embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal equipment may be different. For example, in a 5G system, the terminal equipment may be called User Equipment (User Equipment, UE). The wireless terminal equipment can communicate with one or more core networks (Core Network, CN) via the radio access network (Radio Access Network, RAN), and the wireless terminal equipment can be a mobile terminal equipment, such as a mobile phone (or called a "cellular "telephones) and computers with mobile terminal equipment, such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network. For example, Personal Communication Service (PCS) phone, cordless phone, Session Initiated Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant, PDA) and other devices. The wireless terminal equipment may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, Remote terminal equipment (remote terminal), access terminal equipment (access terminal), user terminal equipment (user terminal), user agent (user agent), and user device (user device) are not limited in this embodiment of the application.

The network device involved in this embodiment of the present application may be a base station, and the base station may include multiple cells that provide services for terminals. Depending on the specific application, the base station can also be called an access point, or it can be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to interchange received over-the-air frames with Internet Protocol (IP) packets and act as a router between the wireless terminal device and the rest of the access network, which can include the Internet Protocol (IP) communication network. Network devices may also coordinate attribute management for the air interface. For example, the network equipment involved in the embodiment of the present application may be a network equipment (Base Transceiver Station, BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA) ), it can also be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be an evolved network device in a long-term evolution (long term evolution, LTE) system (evolutional Node B, eNB or e-NodeB), a 5G base station (gNB) in the 5G network architecture (next generation system), or a Home evolved Node B (HeNB), a relay node (relaynode), The home base station (femto), pico base station (pico), etc. are not limited in this embodiment of the present application. In some network structures, a network device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

One or more antennas can be used between the network device and the terminal device for Multi-Input Multi-Output (MIMO) transmission. The MIMO transmission can be Single User MIMO (Single User MIMO, SU-MIMO) or Multi-User MIMO ( Multiple User MIMO, MU-MIMO). According to the shape and number of root antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission, etc.

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

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

Wherein, the first information includes: an activation command of the physical downlink shared channel SPS PDSCH for semi-persistent scheduling or a second PDCCH for scheduling SPS PDSCH retransmission;

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

Optionally, in the case where the new data contained in the first PDCCH indicates that the NDI value is 1, the first processing unit 601 is configured to implement:

In the case that the terminal does not receive the first information before receiving the first PDCCH, it is determined that the NDI inversion of the data transmission scheduled by the first PDCCH and/or the data scheduled by the first PDCCH is newly transmitted data.

Optionally, in the case where the new data contained in the first PDCCH indicates that the NDI value is 1, the first processing unit 601 is configured to implement:

If the terminal receives the first information before receiving the first PDCCH, it determines 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, in the case where the new data contained in the first PDCCH indicates that the NDI value is 1, the first processing unit 601 is configured to implement at least one of the following:

In the case that the terminal receives the first information before receiving the first PDCCH and the PDSCH feedback for SPSPDSCH retransmission before receiving the first PDCCH is non-acknowledged, determine 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;

When the terminal receives the first information before receiving the first PDCCH, and the PDSCH feedback for SPSPDSCH retransmission before receiving the first PDCCH is an acknowledgment, determine not to receive the data scheduled by the first PDCCH.

Optionally, the device also includes:

The second processing unit is configured to process downlink SPS allocation information according to the third PDCCH;

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

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

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

If the third PDCCH indicates SPS deactivation, delete the downlink SPS allocation information configured by the serving cell.

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

The storage unit is configured to store hybrid automatic repeat request (HARQ) information corresponding to downlink SPS allocation information.

It should be noted that this device embodiment is a device that corresponds one-to-one to the above-mentioned method embodiments, and all the implementation methods in the above-mentioned method embodiments are applicable to this device embodiment, and can also achieve the same technical effect.

It should be noted that the division of units in the embodiment of the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

As shown in FIG. 7 , an embodiment of the present invention also provides a terminal device, including a processor 700, a transceiver 710, a memory 720, and a program stored in the memory 720 and operable on the processor 700; wherein , the transceiver 710 is connected to the processor 700 and the memory 720 through a bus interface, wherein the processor 700 is used to read the program in the memory and perform the following process:

Based on the receiving situation of the first information, perform transmission processing of data scheduled by the first physical downlink control channel PDCCH;

Wherein, the first information includes: an activation command of the physical downlink shared channel SPS PDSCH for semi-persistent scheduling or a second PDCCH for scheduling SPS PDSCH retransmission;

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

The transceiver 710 is used for receiving and sending data under the control of the processor 700 .

Wherein, in FIG. 7 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 700 and various circuits of the memory represented by the memory 720 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. Transceiver 710 may be a plurality of elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, fiber optic cables, etc. Transmission medium. For different user equipments, the user interface 730 may also be an interface capable of connecting externally and internally to required equipment, and the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

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

Optionally, the processor 700 can be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array, Field Programmable Gate Array) or CPLD (Complex Programmable Logic Device, complex programmable logic device), and the processor can also adopt a multi-core architecture.

The processor is used to execute any one of the methods provided in the embodiments of the present 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, when the new data contained in the first PDCCH indicates that the NDI value is 1, the processor is configured to read a computer program in the memory and perform the following operations:

In the case that the terminal does not receive the first information before receiving the first PDCCH, it is determined that the NDI inversion of the data transmission scheduled by the first PDCCH and/or the data scheduled by the first PDCCH is newly transmitted data.

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

If the terminal receives the first information before receiving the first PDCCH, it determines 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, in a case where the new data contained in the first PDCCH indicates that the NDI value is 1, the processor is configured to read a computer program in the memory and perform at least one of the following operations :

In the case that the terminal receives the first information before receiving the first PDCCH and the PDSCH feedback for SPSPDSCH retransmission before receiving the first PDCCH is non-acknowledged, determine 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;

When the terminal receives the first information before receiving the first PDCCH, and the PDSCH feedback for SPSPDSCH retransmission before receiving the first PDCCH is an acknowledgment, determine not to receive the data scheduled by the first PDCCH.

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

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

Wherein, the third PDCCH is scrambled by the G-CS-RNTI, and 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:

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

If the third PDCCH indicates SPS deactivation, delete the downlink SPS allocation information configured by the serving cell.

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

The hybrid automatic repeat request (HARQ) information corresponding to the downlink SPS allocation information is stored.

What needs to be explained here is that the above-mentioned terminal device provided by the embodiment of the present invention can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect. The same parts and beneficial effects are described in detail.

An embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, the steps of the transmission processing method applied to the terminal device are realized. 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 storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.

Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. 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 and optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowcharts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagrams, and combinations of procedures and/or blocks in the flowchart and/or block diagrams can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine, such that instructions executed by the processor of the computer or other programmable data processing equipment produce Means for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the processor-readable memory produce a manufacturing product, the instruction device realizes the functions specified in one or more procedures of the flow chart and/or one or more blocks of the block diagram.

These processor-executable instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented The executed instructions provide steps for implementing the functions specified in the procedure or procedures of the flowchart and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (15)

1. A transmission processing method, characterized in that, executed by a terminal device, comprising: Based on the receiving situation of the first information, perform transmission processing of data scheduled by the first physical downlink control channel PDCCH; Wherein, the first information includes: an activation command of the physical downlink shared channel SPS PDSCH for semi-persistent scheduling or a second PDCCH for scheduling SPS PDSCH retransmission; The first PDCCH is used to schedule the common PDSCH of the semi-persistent scheduling group, and the first PDCCH is scrambled by the multicast semi-static radio network temporary identifier G-CS-RNTI. 2. The method according to claim 1, wherein when the new data contained in the first PDCCH indicates that the NDI value is 1, the first physical information is performed based on the reception of the first information. Transmission processing of data scheduled by the downlink control channel PDCCH, including: In the case that the terminal does not receive the first information before receiving the first PDCCH, it is determined that the NDI inversion of the data transmission scheduled by the first PDCCH and/or the data scheduled by the first PDCCH is newly transmitted data. 3. The method according to claim 1 or 2, characterized in that, in the case where the new data indication NDI contained in the first PDCCH has a value of 1, the second information is performed based on the reception of the first information. A transmission process of data scheduled by the physical downlink control channel PDCCH, including: If the terminal receives the first information before receiving the first PDCCH, it determines 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. 4. The method according to claim 1 or 2, characterized in that, in the case where the new data indication NDI contained in the first PDCCH has a value of 1, the receiving situation based on the first information is used to perform the second A transmission process of data scheduled by the physical downlink control channel PDCCH, including at least one of the following: In the case that the terminal receives the first information before receiving the first PDCCH and the PDSCH feedback for SPSPDSCH retransmission before receiving the first PDCCH is non-acknowledged, determine 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; When the terminal receives the first information before receiving the first PDCCH, and the PDSCH feedback for SPSPDSCH retransmission before receiving the first PDCCH is an acknowledgment, determine not to receive the data scheduled by the first PDCCH. 5. The method according to claim 1, further comprising: Processing the downlink SPS allocation information according to the third PDCCH; Wherein, the third PDCCH is scrambled by the G-CS-RNTI, and the carried NDI is 0. 6. The method according to claim 5, wherein the processing of downlink SPS allocation information according to the third PDCCH includes the following one: If the third PDCCH indicates SPS activation, storing downlink SPS allocation information configured by the serving cell; If the third PDCCH indicates SPS deactivation, delete the downlink SPS allocation information configured by the serving cell. 7. The method according to claim 6, wherein, in the case of storing the downlink SPS allocation information configured by the serving cell, the method further comprises: The hybrid automatic repeat request (HARQ) information corresponding to the downlink SPS allocation information is stored. 8. A terminal device, characterized in that it includes a memory, a transceiver, and a processor: The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations: Based on the receiving situation of the first information, perform transmission processing of data scheduled by the first physical downlink control channel PDCCH; Wherein, the first information includes: an activation command of the physical downlink shared channel SPS PDSCH for semi-persistent scheduling or a second PDCCH for scheduling SPS PDSCH retransmission; The first PDCCH is used to schedule the common PDSCH of the semi-persistent scheduling group, and the first PDCCH is scrambled by the multicast semi-static radio network temporary identifier G-CS-RNTI. 9. The terminal device according to claim 8, wherein when the new data contained in the first PDCCH indicates that the NDI value is 1, the processor is configured to read the computer program and do the following: In the case that the terminal does not receive the first information before receiving the first PDCCH, it is determined that the NDI inversion of the data transmission scheduled by the first PDCCH and/or the data scheduled by the first PDCCH is newly transmitted data. 10. The terminal device according to claim 8 or 9, wherein the processor is configured to read the a computer program in memory and perform the following operations: If the terminal receives the first information before receiving the first PDCCH, it determines 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. 11. The terminal device according to claim 8 or 9, wherein the processor is configured to read the A computer program in memory that does at least one of the following: In the case that the terminal receives the first information before receiving the first PDCCH and the PDSCH feedback for SPSPDSCH retransmission before receiving the first PDCCH is non-acknowledged, determine 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; When the terminal receives the first information before receiving the first PDCCH, and the PDSCH feedback for SPSPDSCH retransmission before receiving the first PDCCH is an acknowledgment, determine not to receive the data scheduled by the first PDCCH. 12. The terminal device according to claim 8, wherein the processor, configured to read the computer program in the memory, also performs the following operations: Processing the downlink SPS allocation information according to the third PDCCH; Wherein, the third PDCCH is scrambled by the G-CS-RNTI, and the carried NDI is 0. 13. The terminal device according to claim 12, wherein the processor is configured to read the computer program in the memory and perform one of the following operations: If the third PDCCH indicates SPS activation, storing downlink SPS allocation information configured by the serving cell; If the third PDCCH indicates SPS deactivation, delete the downlink SPS allocation information configured by the serving cell. 14. A transmission processing device applied to terminal equipment, characterized in that it comprises: The first processing unit is configured to perform transmission processing of data scheduled by the first physical downlink control channel PDCCH based on the reception of the first information; Wherein, the first information includes: an activation command of the physical downlink shared channel SPS PDSCH for semi-persistent scheduling or a second PDCCH for scheduling SPS PDSCH retransmission; The first PDCCH is used to schedule the common PDSCH of the semi-persistent scheduling group, and the first PDCCH is scrambled by the multicast semi-static radio network temporary identifier G-CS-RNTI. 15. A processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to perform the operation described in any one of claims 1 to 7. Methods.

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